Patent Application
20220083041
This description relates to techniques for controlling the transmissions of operational information from vehicles for remote processing and analysis.
With the increased interest in reducing dependency on fossil fuels, various application, such as transportation, incorporate the use of alternative energy sources. Both public and private transportation vehicles have been developed to run on fuels other than traditional petroleum based fuels (i.e., petrol, diesel, etc.). Some vehicles solely use alternative energy sources while others combine the functionality of petroleum-based systems with alternative energy based systems (e.g., electrical, biofuel, natural gas, etc.). Along with being potentially more cost-effective and having more abundant resources, such alternative energy sources and their byproducts are considered more environmentally friendly.
The systems and techniques described herein relate to modularizing vehicle energy storage systems for vehicles that incorporate the use of alternative energy sources in a manner configured to suit the need of the vehicle and customer for high-class commercial upfits and retrofits. Various higher-class vehicles are used in different manners. For example, refuse trucks generally do very low speed, high power driving whereas work trucks might need more exportable energy to drive tools throughout the day or long haul trailers might need higher energy to cruise on electric drive for longer periods of time. Such varying needs would require different energy/power densities for energy storage system (e.g., battery packs, fuel cells or ultra-capacitors) included with the vehicle.
Various implementations described herein provide modular energy storage systems that facilitate readily accommodating the varying power needs for these higher class vehicles. The modular energy storage systems include a first energy storage module including a module chassis. The module chassis includes an electrical interconnection system for electrically connecting the first energy storage module to at least one supplemental energy storage module. The energy storage system includes a sensor system electrically connected to the electrical interconnection system. The sensor system is configured to detect an electrical property of one or more energy storage modules coupled to the electrical interconnection system. The energy storage system includes a control system communicably connected to the sensor system. The control system includes a memory configured to store instructions and a processor configured to execute the instructions to perform operations that include receiving data that represents the electrical property of the one or more energy storage modules and determining an amount of remaining energy of the one or more energy storage modules coupled to the electrical interconnection system based on the electrical property detected.
In particular implementations, the operations also include defining a control strategy for a vehicle propulsion system powered by the modular energy storage system based on the amount of remaining energy of the one or more energy storage modules.
In certain implementations, the operations also include switching the first energy storage module and the at least one supplemental energy storage module between a series configuration and a parallel configuration by causing a reconfiguration of one or more switches in the electrical interconnection system.
In some implementations, the operations also include causing a vehicle propulsion system to be disengaged for a specified period of time.
In particular implementations, the operations also include defining a range of speeds for a vehicle propulsion system.
In certain implementations, the operations also include defining a discharge rate of the one or more energy storage modules.
In some implementations, the operations also include defining an activation period for a regenerative braking system configured to recharge the one or more energy storage modules.
In particular implementations, the one or more energy storage modules comprise batteries.
In certain implementations, the one or more energy storage modules comprise fuel cells.
In some implementations, the one or more energy storage modules comprise ultra-capacitors.
In some implementations, the one or more energy storage modules are configured to provide exportable power. For example, the exportable power can be used to provide power to power tools or provided/returned to a power grid. Various implementations provide modular energy storage systems. The energy storage systems include a system chassis including a plurality of energy storage module bays configured to receive a plurality of energy storage modules. The system chassis includes an electrical interconnection system configured to electrically interconnect each energy storage module docked in one of the energy storage module bays of the plurality of energy storage module bays. The energy storage systems include a sensor system electrically connected to the electrical interconnection system. The sensor system is configured to detect an electrical property of one or more energy storage modules coupled to the electrical interconnection system. The energy storage systems include a control system communicably connected to the sensor system. The control system includes a memory configured to store instructions and a processor configured to execute the instructions to perform operations that include receiving data that represents the electrical property of the one or more energy storage modules and determining an amount of remaining energy of the one or more energy storage modules connected to the electrical interconnection system based on the electrical property detected.
In particular implementations, the operations also include defining a control strategy for an actuator of a vehicle based on the amount of remaining energy of the one or more energy storage modules.
In certain implementations, the system chassis comprises a cooling system configured selectively to cool one or more energy storage modules, wherein the cooling system is configured to circulate a cooling fluid to occupied bays. The cooling fluid is a liquid in certain implementations. The cooling fluid is a gas in certain implementations.
In some implementations, the operations include changing at least one of a flow rate and a flow quantity of the cooling fluid based on the amount of remaining energy of the one or more energy storage modules.
In particular implementations, the one or more energy storage modules include batteries.
In certain implementations, the one or more energy storage modules include fuel cells.
In some implementations, the one or more energy storage modules include ultra-capacitors.
In some implementations, the one or more energy storage modules are configured to provide exportable power. For example, the exportable power can be used to provide power to power tools or provided/returned to a power grid.
In particular implementations, the modular energy storage system includes the vehicle.
Various implementations provide computing device implemented methods. The methods include receiving data representing an electrical property of one or more energy storage modules from a sensor system electrically connected to a modular energy storage system. The methods include determining an amount of remaining energy of the one or more energy storage modules of the modular energy storage system. The methods include defining a control strategy for a vehicle propulsion system powered by the modular energy storage system based on the amount of remaining energy of the one or more energy storage modules of the modular energy storage system.
In certain implementations, the methods include defining a control strategy for the vehicle propulsion system powered by the modular energy storage system based on the amount of remaining energy of the one or more energy storage modules.
In particular implementations, the methods include changing the one or more energy storage modules between a series configuration and a parallel configuration by causing a reconfiguration of one or more switches in an electrical interconnection system of the modular energy storage system.
In some implementations, the methods include causing a vehicle propulsion system to be disengaged for a specified period of time.
In certain implementations, the methods include defining a range of speeds for a vehicle propulsion system.
In particular implementations, the methods include defining a discharge rate of the one or more energy storage modules.
In some implementations, the methods include defining an activation period for a regenerative braking system configured to recharge the one or more energy storage modules.
In some implementations, the one or more energy storage modules are configured to provide exportable power. For example, the exportable power can be used to provide power to power tools or provided/returned to a power grid.
It should be appreciated that all combinations of the foregoing concepts and additional concepts discussed in greater detail below (provided such concepts are not mutually inconsistent) are contemplated as being part of the inventive subject matter disclosed herein. In particular, all combinations of claimed subject matter appearing at the end of this disclosure are contemplated as being part of the inventive subject matter disclosed herein. It should also be appreciated that terminology explicitly employed herein that also may appear in any disclosure incorporated by reference should be accorded a meaning most consistent with the particular concepts disclosed herein.
The drawings primarily are for illustrative purposes and are not intended to limit the scope of the inventive subject matter described herein. The drawings are not necessarily to scale; in some instances, various aspects of the inventive subject matter disclosed herein may be shown exaggerated or enlarged in the drawings to facilitate an understanding of different features. In the drawings, like reference characters generally refer to like features (e.g., functionally similar and/or structurally similar elements).
The features and advantages of the inventive subject matter disclosed herein will become more apparent from the detailed description set forth below when taken in conjunction with the drawings.
Following below are more detailed descriptions of various concepts related to, and exemplary embodiments of, inventive systems, methods and components of vehicular data extraction devices, systems, and methods.
Referring to
Under some conditions, analysis of the operational information may suggest that particular vehicles, types of vehicles, etc. may be optimum. For example, conventional internal combustion engine based vehicles may be optimal for some environments while alternative fuel vehicles, which may solely rely upon non-petroleum energy sources (e.g., electricity, natural gas, biofuels etc.), may be better suited for other environments. Other vehicles that may prove to be optimum may include hybrid vehicles that employ two or more distinct power sources (e.g., an electric motor and an internal combustion engine—referred to as a hybrid electric vehicle or HEV). Some hybrid vehicles (referred to as plug-in hybrid vehicles) may operate by using energy storage devices that can be replenished (e.g., rechargeable batteries). Determining the optimal power output for the energy storage devices and/or the optimal power/weight ratio for any such system may be enhanced by obtaining real-time real world driving and operational data. An analysis of this data may suggest modifying the power and/or weight of the energy storage device. Implementations described herein advantageously facilitate modifications to the energy storage devices and can thereby provide changes in the driving and/or operational characteristics of the vehicle and the use by the vehicle of the power stored.
In some arrangements, for electrical energy storage devices, one or more techniques may be implemented for charging and recharging the devices. For example, batteries may be charged through regenerative braking, strategic charging techniques, etc. during appropriate operating periods of the vehicle. In instances where the energy storage system is modified the charging and recharging techniques (rates amount duration) and the associated operational parameters may also be adjusted. In general, energy is typically lost as heat in conventional braking systems; however, a regenerative braking system may recover this energy by using an electric generator to assist braking operations. Some systems and techniques may also strategically collect (e.g., leech) energy from the combustion engine during periods of efficient operation (e.g., coasting, traveling, etc.) and later assist the engine during periods of lesser efficiency. For such vehicles, the electric generator can be a device separate from the electric motor, considered as a second operating mode of the electric motor, or implemented through one or more other techniques, individually or in combination. Energy recovered by regenerative braking may be considered insufficient to provide the power needed by the vehicle. To counteract this lack of energy, the electric motor may be engaged during defined periods to assist a combustion engine or to be the sole source of propulsion. One or more control strategies may be used to determine these time periods and may be modified as the energy storage system is modulated to produce more or less power. Similarly, the time periods for engaging regenerative braking and strategic charging in order to replenish energy storage systems may be modified in response to any changes made in the power density of the system. Other operations of the vehicle (e.g., acceleration, decelerations, gear changes, etc.) may also be defined and redefined for the control strategies as modification are made to the energy storage system. By developing such strategies to control the assistance provided to combustion engines (e.g., during low efficiency periods), energy may be conserved without negatively impacting vehicle performance. Along with such strategies, individual vehicles, types of vehicles, etc. may be selected for use based on the operational environment.
Some vehicle manufacturers may recommend operations and control strategies for entire classes of vehicles or other types of large vehicle groups (e.g., same model vehicles, same vehicle line, etc.) at particular times (e.g., at the release of the vehicle line). Similarly, the level of assistance provided by an electric motor or other type of alternative fuel system may generally be constant, but can be tailored to be dynamic when engaged with dynamic energy storage systems. Route specific information (e.g., vehicle is driven under highway, city, rural, etc. conditions), driver information (e.g., driver accelerating and braking tendencies, etc.) and other types of environmental information (e.g., time of day, season, etc.) can be accounted for in determining the appropriate operational strategies in conjunction with changes made to the energy storage systems.
One or more techniques may be implemented for appropriately selecting a vehicle, type of vehicle, etc. for operating in a particular environment. For example, data reflective of vehicles operating in the environment may be used for selecting a vehicle, which type of vehicle, and/or which capacity of energy storage system should be implemented. The energy storage system selection may factor in various aspects, such as environmental aspects (e.g., weather and climate), routes, payload, average speed, terrain, alternative power consumption (e.g. lift gates, tool operations, etc.). These environmental and operational factors can impact the cooling or temperature maintenance of a component of the propulsion system such as a battery and thus may vary the optimal conditions for the energy storage solution for the system seasonally or geographically. Vehicle selection may also identify that one vehicle type (e.g., a combustion engine based vehicle) be converted into another vehicle type (e.g., hybrid vehicle) to improve performance (e.g., fuel efficiency, costs, etc.). Such operational data from vehicles may be used for other types of analysis. For example, vehicle operational data may be used for analysis to improve recommended operations and control strategies for a vehicle, type of vehicle, etc. For example, hybrid conversions may be more advantageous (e.g., reduced fuel consumption) for lower speed environments and less advantageous in high-speed environments.
One or more techniques may be employed for making such selections or other types of analysis. For example, from the vehicle operational parameters (e.g., operating speed, fuel economy, etc.) one or more metrics (e.g., performance metrics) may be calculated. In turn, the metrics may be utilized for further analysis. For example, along with using the information for vehicle selection, vehicle type selection, etc., converting one vehicle type (e.g., a combustion engine based vehicle) into another vehicle type (e.g., hybrid vehicle) may be determined through use of the operational parameters and metrics to achieve performance improvements in fuel efficiency, costs, etc.
As shown in
In some situations, data from sources other than the vehicle may also be collected. For example, user input may be provided. In this arrangement, the vehicle 100 includes an electronic display 106 that has been incorporated into its dashboard to present information such as selectable entries regarding different topics (e.g., operator ID, planned vehicle operations, trip destination, etc.). Upon selection, representative information may be gathered and provided to the vehicle information manager 102. To interact with the electronic display 106, a knob 108 illustrates a potential control device; however, one or more other types of devices may be used for user interaction (e.g., a touch screen display, etc.). Similar to using one or more sensors to collect operational data, other types of information may also be gathered; for example, a sensor 110 (here embedded in the dashboard of the vehicle 100) may collect information such as cabin temperature, location of the vehicle (e.g., the sensor being a GPS receiver) and other types of information. By collecting information such as GPS location, additional information may be provided to the vehicle information manager 102 (e.g., current location, start location, destination information) which may be used for quantifying vehicle performance. In some arrangements, information from other vehicles may be used by the vehicle information manager 102. For example, data may be collected from a fleet of vehicles (e.g., similar or dissimilar to the vehicle 100) and used, for example, in data comparisons. While one sensor 110 is illustrated in this example, multiple sensors may be located internally or externally to the vehicle for information collection (e.g., internal or external temperature or various vehicle components, etc.). One or more devices present in the vehicle 100 may also be used for information collection; for example, handheld devices (e.g., a smart phone 112, etc.) may collect and provide information (e.g., location information, identify individuals present in the vehicle such as vehicle operators, etc.) for use by the vehicle information manager 102 (e.g., identify driving characteristics of a vehicle operator). Similarly, portions of the vehicle itself (e.g., vehicle components) may collect information for the vehicle information manager 102; for example, one or more of the seats of the vehicle 100 (e.g., driver seat 114) may collect information (e.g., position of the seat to estimate the driver's weight) to provide to the vehicle information manager 102. Similar to data directly provided by one or more sensors, processed data may also be provided to the vehicle information manager 102. For example, gathered information may be processed by one or more computing devices (e.g., controllers) before being provided to the vehicle information manager 102.
In some arrangements, along with collecting information at the vehicle, remotely located information sources may be accessed by the vehicle. Once the vehicle information is collected, the data may be prepared and transmitted by the vehicle information manager 102 (along with assistance from the controller 104) to one or more locations by employing one or more communication techniques and methodologies. For example, wireless communication techniques (e.g., radio frequency, infrared, etc.) may be utilized that call upon one or more protocols and/or standards (e.g., the IEEE 802.11 family of standards such as WI-FI, the International Mobile Telecommunications-2000 (IMT-2000) specifications such as 3rd generation mobile telecommunications (3G), 4th generation cellular wireless standards (4G), 5th generation cellular wireless standards (5G), wireless technology standards for exchanging data over relatively short distances such as BLUETOOTH, etc.). While the figure illustrates the vehicle information manager 102 (and the controller 104) as being entirely located onboard the vehicle 100, some or all of the functionality of the vehicle information manager 102 may be provided from one or more other locations (including remote locations). In one such arrangement, vehicle equipment (e.g., sensors) may provide (e.g., stream) raw data to a remotely located vehicle information manager by employing one or more communication techniques and methodologies.
Referring to
In some arrangements, the network architecture may be considered as including one or more of the vehicles. For example, vehicles may include equipment for providing one or more network nodes (e.g., supply truck 208 functions as a node for exchanging information between the supply truck 210 and the network 204). As such, the information exchanging capability may include the vehicles exchanging information with the vehicle information service provider 202 and other potential network components (e.g., other vehicles, etc.).
One or more technologies may be used to exchange information among the vehicle information service provider 202, the network 204 (or networks) and the collection of vehicles. For example, wireless technology (capable of two-way communication) may be incorporated into the vehicles to exchange information with the vehicle information service provider 202. Along with providing and collecting information (e.g., operational parameters) from the vehicles, the vehicle information service provider 202 may be capable of processing information (e.g., in concert with a vehicle data analyzer 214 to analyze data (e.g., determine vehicles for possible selection, conversion, etc.) and executing related operations (e.g., store collected and processed information).
In some arrangements, the vehicle information service provider 202 may operate as a single entity; however, operations may be distributed among various entities to provide the functionality. In some arrangements, some functionality (e.g., operations of the vehicle data analyzer 214) may be considered a service, rather than a product, and may be attained by entering into a relationship with the vehicle information service provider 202 (e.g., purchase a subscription, enter into a contractual agreement, etc.). As such, the vehicle information service provider 202 may be considered as being implemented as a cloud computing architecture in which its functionality is perceived by users (e.g., vehicle operators, business operators, vehicle designers and manufacturers, etc.) as a service rather than a product. For such arrangements, users may be provided information (e.g., vehicle or vehicle type selections for operating in particular environments, vehicle selections for conversion into hybrid vehicles, etc.) from one or more shared resources (e.g., hardware, software, etc.) used by the vehicle information service provider 202. For service compensation, one or more techniques may be utilized; for example, subscription plans for various time periods may be implemented (e.g., a time period for monitoring use of vehicles or vehicle types in particular environments, analyzing if new technology should be incorporated into or used to replace vehicles, etc.).
Along with information being provided by one or more vehicles (e.g., received through the network 204, etc.), the vehicle information service provider 202 may utilize data from other sources. For example, information sources 216 external to the vehicle information provider 202 may provide vehicle related information (e.g., manufacturer recommendations for performance, vehicle load conditions, etc.), environmental information (e.g., current road conditions where the vehicle is operating, traffic conditions, topographical information, weather conditions and forecasts, etc.). In some arrangements, the information sources 216 may be in direct communication with the vehicle information service provider 202; however, other communication techniques may also be implemented (e.g., information from the information sources 216 may be provided through one or more networks such as network 204).
In the illustrated example, to provide such functionality, the vehicle information service provider 202 includes a server 218 that is capable of being provided information by the network 204 and the information sources 216. Additionally, the server 218 is illustrated as being in direct communication with a storage device 220 that is located at the vehicle information service provider 202 (however, remotely located storage may be accessed by the server 218). In this example, the functionality of the vehicle data analyzer 214 is located off-board the vehicle while the functionality of the vehicle information manager 102 (shown in
Referring to
The vehicle information manager 102 may implement one or more techniques to improve the efficiency of transmitting information from the vehicle. For example, rather than simply transmitting all of the data (e.g., operational parameters) collected from the vehicle (by the data collector 300), techniques may be employed to reduce the amount of potentially unneeded transmissions and thereby improve efficiency and reduce costs. For example, rather than transmitting collected information at a relatively constant rate (e.g., as each segment of data is ready for transmission), one or more events may be defined and used as triggers for transmitting data. Such events may be associated with situations that occur during the operation of the vehicle 210 (although events may also be defined for situations that occur off-board the vehicle). In one instance, an event could be defined by one or more predefined rules associated with operations of the vehicle, activities detected in the vehicle, etc. For example, attaining a particular speed, acceleration, deceleration, fuel consumption level, energy storage level, etc., can be considered such an event which triggers the transmission of information (e.g., time series data of the speed, acceleration, etc.) to one or more locations (e.g., the vehicle information service provider 202). Events may also be associated with vehicle location, route being driven, etc. For example, based upon the GPS coordinates of the vehicle, travel direction, etc., the vehicle may stray from a predefined route and more information may be sent from the vehicle to the service provider 202. Activities of the vehicle driver may also be used to define one or more events. For example, displacement of the vehicle's accelerator pedal, brake pedal, etc. (due to the driver) may extend beyond a predefined amount and trigger the transmission of information from the transceiver 302. Detecting such predefined events may be implemented by employing one or more techniques, for example, the vehicle information manager 102 may include an event detector 304. In this arrangement, information such as operational parameters (e.g., collected by the data collector 300) is monitored by the event detector 304 to determine if one or more rules have been satisfied to declare a predefined event (or multiple events) as being detected. In some arrangements, the event detector 304 may use a series of predefined rules (e.g., “vehicle speed has exceeded 80 mph”, “battery charge is below 20%”, etc.) to determine if one or more events has occurred. In some arrangements, multiple rules may need detection before an event is considered to have occurred. For example, rules may reflect hysteresis by depending upon both current conditions of the vehicle and past conditions. To assist the operations of the event detector 304, the transceiver 302 and the data collector 300, one or more data storage techniques may be employed by the vehicle information manager 102. As illustrated, one or more storage devices (e.g., memory components, hard drives, etc.) such as storage device 306 may be included in the vehicle information manager 102. Also with assisting with the operations of the information manager components, the storage device 306 may also be considered as providing a data store for information such as operational parameters (collected during the operation of the vehicle) that can be later accessed. For example, after traveling its route, collected data may retrieved from the storage device 306 (e.g., by the vehicle owner, the vehicle information service provider 202, etc.) for analysis to quantify performance, to compare performance with other vehicles, etc.
Once a predefined event or multiple events have been detected (e.g., by the event detector 304), one or more type of changes may be introduced for transmitting data from the vehicle 210 to one or more locations (e.g., the vehicle information service provider 202). In one arrangement, upon detection the amount of information being transmitted increases, e.g., to allow for a more detailed analysis to be performed (by the vehicle information service provider 202). To increase the amount of information, one or more techniques may be utilized such as including more information in transmissions. For example, different information (e.g., a time series of pedal displacement) may be transmitted based upon the event detected (e.g., the vehicle brake pedal being abruptly stepped on by the driver). In some arrangements, this additional data to be included in transmissions may be defined along with the event. Data transmission properties may also be changed upon the detection of an event (by the event detector 304) to increase the amount of information being sent. For example, prior to detection, information may be transmitted (e.g., from the transceiver 302) at one frequency and post detection the transmission frequency may be increased (e.g., for a period of time). Bursts of information may be sent from the vehicle to the vehicle information service provider 202 due to event detection. Similar to adjusting transmission characteristics for a single period of time (e.g., increase transmission frequency for a period of time and then return to the original transmission frequency), such characteristics may be periodically adjusted. For example, based upon an event being detected, a repetitive sequence of higher transmission frequency periods followed by lower transmission frequency periods may be employed by the transceiver 302. As such, a sequence of information bursts followed by periods of less information being transmitted may be utilized for efficient data transfer. Similar to frequency, other transmission properties involving compression, modulation schemes, etc. may be changed due to the detection of an event (by the event detector 304).
Referring to
A weight sensor can detect when an item over a certain threshold is placed in a bay 406. A contact sensor can be connected or disconnected to close or open a circuit via displacement caused by weight or displacement of the energy storage cell 404 into one of the bays 406. A line of sight sensor (e.g., a light beam, laser beam, etc.) can be interrupted by the installation of the cell 404 into one of the bays 406. The energy storage system 400 also includes switches 411. The switches 411 (e.g., semiconductor devices) are interconnected between the batteries and can be adjusted (e.g., biased, controlled, etc.) to change the interconnection between batteries between a parallel configuration and a series configuration. The switches 411 can be controlled via the controller 408 and can be controlled responsive to the overall remaining energy of the system 400 and the power requirements of the vehicles. The overall remaining energy available from the system 400 depends on how many energy storage cells 404 occupy bays 406 and what the capacity of the cells 404 are, for example as detected by the sensors 410. In response to a detected energy storage cell 404 seated in one of the bays 406, the controller can initiate a protocol to detect a property of the cell(s) 404 (e.g., an internal resistance, state of health, state of charge, remaining charge, energy density, etc.) individually or collectively.
The energy storage system 400 also includes a temperature management circuit 412 for maintaining the individual cells 404 at a desired temperature or within a particular temperature range. The range may be determined based on the property of each cell 404 (e.g., a property that is predetermined or determined using the sensors 410). The temperature management circuit 412 can include a plurality of valves 414 that can be opened or closed depending on the occupancy of cells 404 in bays 406. Accordingly, the temperature management system can be adjusted to circulate cooling or heating fluid only to occupied bays as determined by sensors 410 and as controlled by the controller 408. The cooling or heating fluid circulated in the temperature management circuit 412 can include a liquid or a gas. The liquid or gas may be heated or cooled by one or more auxiliary systems of the vehicle.
Referring to
Referring to
At 506, the controller 454 defines a control strategy for a vehicle propulsion system (e.g., traction motor 452) powered by the modular energy storage system 400 based on the amount of remaining energy of the one or more energy storage modules 404 of the modular energy storage system 400. Defining the control strategy can be implemented in various stages and in various forms. Defining the control strategy can include switching the first energy storage module and the at least one supplemental energy storage module between a series configuration and a parallel configuration (or a combination of series and parallel configurations) by causing a reconfiguration of one or more switches electrically connecting the storage modules. For example, if the controller 454 determines that an operating point in the drive cycle demands more power from the energy storage system, the controller 454 can send a control command to controller 408 to cause the switches 411 to switch to a configuration to put the energy storage cells 404 in a parallel configuration or in a series configuration. For example, adding cells in a series configuration would lead to a higher nominal voltage and thus a higher energy density. This would be useful if the specific route/drive cycle needs more energy to complete a certain trip (i.e., more range). On the other hand, if the drive cycle is demanding more power (steep climbs/mountainous regions, etc.), then adding cells into parallel would be helpful. The ability to include/exclude cells when desired would help in maintaining consistent performance across variety of driving conditions. The total capacity may be analyzed by the controller 454 based on other aspects of the vehicle, such as those obtained by the vehicle information manager regarding the route, payload, capacity, environment, combustion engine system available or other conditions of operations of the vehicle.
Defining the control strategy can include causing a vehicle propulsion system to be disengaged for a specified period of time. The total capacity of the energy storage module may define how long or during what periods an alternative propulsion system is engaged or disengaged to allow the system to run on alternative power supplied by the energy storage system. Defining the control strategy can include defining a range of speeds for a vehicle propulsion system. Defining the control strategy can include defining a discharge rate of the one or more energy storage modules. Defining the control strategy can include defining an activation period for a regenerative braking system configured to recharge the one or more energy storage modules. The regenerative braking period may be more aggressive or longer, for example, when the power density is higher to enable greater charging of the higher capacity system. The detection of any change in the capacity can trigger a modification to the regenerative braking period automatically.
Defining the control strategy can include defining whether one or more energy storage modules can be used to provide exportable power or whether exportable power is desired. For example, in some cases, the exportable power can be used to power one or more power tools (e.g., to run power equipment at a campsite or construction site). In some cases, the exportable power can be returned to a power grid (e.g., at the end of the day when the vehicle is plugged into the power grid for charging, at least some of the exportable power can be returned to the power grid). For example, if exportable power is desired, the control strategy can conserve and/or generate energy more aggressively than if exportable power is not desired. The control strategy may include an indication of an amount of exportable energy available.
Computing device 600 includes processor 602, memory 604, storage device 606, high-speed interface 608 connecting to memory 604 and high-speed expansion ports 610, and low speed interface 612 connecting to low speed bus 614 and storage device 606. Each of components 602, 604, 606, 608, 610, and 612, are interconnected using various busses, and can be mounted on a common motherboard or in other manners as appropriate. Processor 602 can process instructions for execution within computing device 600, including instructions stored in memory 604 or on storage device 606, to display graphical data for a GUI on an external input/output device, including, e.g., display 616 coupled to high-speed interface 608. In other implementations, multiple processors and/or multiple buses can be used, as appropriate, along with multiple memories and types of memory. Also, multiple computing devices 600 can be connected, with each device providing portions of the necessary operations (e.g., as a server bank, a group of blade servers, or a multi-processor system).
Memory 604 stores data within computing device 600. In one implementation, memory 604 is a volatile memory unit or units. In another implementation, memory 604 is a non-volatile memory unit or units. Memory 604 also can be another form of computer-readable medium, including, e.g., a magnetic or optical disk.
Storage device 606 is capable of providing mass storage for computing device 600. In one implementation, storage device 606 can be or contain a computer-readable medium, including, e.g., a floppy disk device, a hard disk device, an optical disk device, a tape device, a flash memory or other similar solid state memory device, or an array of devices, including devices in a storage area network or other configurations. A computer program product can be tangibly embodied in a data carrier. The computer program product also can contain instructions that, when executed, perform one or more methods, including, e.g., those described above. The data carrier is a computer- or machine-readable medium, including, e.g., memory 604, storage device 606, memory on processor 602, and the like.
High-speed controller 608 manages bandwidth-intensive operations for computing device 600, while low speed controller 612 manages lower bandwidth-intensive operations. Such allocation of functions is an example only. In one implementation, high-speed controller 608 is coupled to memory 604, display 616 (e.g., through a graphics processor or accelerator), and to high-speed expansion ports 610, which can accept various expansion cards (not shown). In the implementation, the low-speed controller 612 is coupled to storage device 606 and low-speed expansion port 614. The low-speed expansion port, which can include various communication ports (e.g., USB, Bluetooth®, Ethernet, wireless Ethernet), can be coupled to one or more input/output devices, including, e.g., a keyboard, a pointing device, a scanner, or a networking device including, e.g., a switch or router (e.g., through a network adapter).
Computing device 600 can be implemented in a number of different forms, as shown in the figure. For example, it can be implemented as standard server 620, or multiple times in a group of such servers. It also can be implemented as part of rack server system 624. In addition or as an alternative, it can be implemented in a personal computer (e.g., laptop computer 622). In some examples, components from computing device 600 can be combined with other components in a mobile device (not shown) (e.g., device 650). Each of such devices can contain one or more of computing device 600, 650, and an entire system can be made up of multiple computing devices 600, 650 communicating with each other.
Computing device 650 includes processor 652, memory 664, and an input/output device including, e.g., display 654, communication interface 666, and transceiver 668, among other components. Device 650 also can be provided with a storage device, including, e.g., a microdrive or other device, to provide additional storage. Components 650, 652, 664, 654, 666, and 668, may each be interconnected using various buses, and several of the components can be mounted on a common motherboard or in other manners as appropriate.
Processor 652 can execute instructions within computing device 650, including instructions stored in memory 664. The processor can be implemented as a chipset of chips that include separate and multiple analog and digital processors. The processor can provide, for example, for the coordination of the other components of device 650, including, e.g., control of user interfaces, applications run by device 650, and wireless communication by device 650.
Processor 652 can communicate with a user through control interface 658 and display interface 656 coupled to display 654. Display 654 can be, for example, a TFT LCD (Thin-Film-Transistor Liquid Crystal Display) or an OLED (Organic Light Emitting Diode) display, or other appropriate display technology. Display interface 656 can comprise appropriate circuitry for driving display 654 to present graphical and other data to a user. Control interface 658 can receive commands from a user and convert them for submission to processor 652. In addition, external interface 662 can communicate with processor 642, so as to enable near area communication of device 650 with other devices. External interface 662 can provide, for example, for wired communication in some implementations, or for wireless communication in other implementations. Multiple interfaces also can be used.
Memory 664 stores data within computing device 650. Memory 664 can be implemented as one or more of a computer-readable medium or media, a volatile memory unit or units, or a non-volatile memory unit or units. Expansion memory 674 also can be provided and connected to device 850 through expansion interface 672, which can include, for example, a SIMM (Single In Line Memory Module) card interface. Such expansion memory 674 can provide extra storage space for device 650, and/or may store applications or other data for device 650. Specifically, expansion memory 674 can also include instructions to carry out or supplement the processes described above and can include secure data. Thus, for example, expansion memory 674 can be provided as a security module for device 650 and can be programmed with instructions that permit secure use of device 650. In addition, secure applications can be provided through the SIMM cards, along with additional data, including, e.g., placing identifying data on the SIMM card in a non-hackable manner.
The memory can include, for example, flash memory and/or NVRAM memory, as discussed below. In one implementation, a computer program product is tangibly embodied in a data carrier. The computer program product contains instructions that, when executed, perform one or more methods, including, e.g., those described above. The data carrier is a computer- or machine-readable medium, including, e.g., memory 664, expansion memory 674, and/or memory on processor 652, which can be received, for example, over transceiver 668 or external interface 662.
Device 650 can communicate wirelessly through communication interface 666, which can include digital signal processing circuitry where necessary. Communication interface 666 can provide for communications under various modes or protocols, including, e.g., GSM voice calls, SMS, EMS, or MMS messaging, CDMA, TDMA, PDC, WCDMA, CDMA2000, or GPRS, among others. Such communication can occur, for example, through radio-frequency transceiver 668. In addition, short-range communication can occur, including, e.g., using a Bluetooth®, Wi-Fi, or other such transceiver (not shown). In addition, GPS (Global Positioning System) receiver module 670 can provide additional navigation- and location-related wireless data to device 650, which can be used as appropriate by applications running on device 650.
Device 650 also can communicate audibly using audio codec 660, which can receive spoken data from a user and convert it to usable digital data. Audio codec 660 can likewise generate audible sound for a user, including, e.g., through a speaker, e.g., in a handset of device 650. Such sound can include sound from voice telephone calls, recorded sound (e.g., voice messages, music files, and the like) and also sound generated by applications operating on device 650.
Computing device 650 can be implemented in a number of different forms, as shown in the figure. For example, it can be implemented as cellular telephone 680. It also can be implemented as part of smartphone 682, personal digital assistant, or other similar mobile device.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, specially designed ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various implementations can include one or more computer programs that are executable and/or interpretable on a programmable system. This includes at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs (also known as programs, software, software applications or code) include machine instructions for a programmable processor, and can be implemented in a high-level procedural and/or object-oriented programming language, and/or in assembly/machine language. As used herein, the terms machine-readable medium and computer-readable medium refer to a computer program product, apparatus and/or device (e.g., magnetic discs, optical disks, memory, Programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for presenting data to the user, and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the computer. Other kinds of devices can be used to provide for interaction with a user as well. For example, feedback provided to the user can be a form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback). Input from the user can be received in a form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a backend component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a frontend component (e.g., a client computer having a user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or a combination of such backend, middleware, or frontend components. The components of the system can be interconnected by a form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.
The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
In some implementations, the engines described herein can be separated, combined or incorporated into a single or combined engine. The engines depicted in the figures are not intended to limit the systems described here to the software architectures shown in the figures.
A number of embodiments have been described. Nevertheless, it will be understood that various modifications can be made without departing from the spirit and scope of the processes and techniques described herein. In addition, the logic flows depicted in the figures do not require the particular order shown, or sequential order, to achieve desirable results. In addition, other steps can be provided, or steps can be eliminated, from the described flows, and other components can be added to, or removed from, the described systems. Accordingly, other embodiments are within the scope of the following claims.
Also, the technology described herein may be embodied as a method, of which at least one example has been provided. The acts performed as part of the method may be ordered in any suitable way. Accordingly, implementations may be constructed in which acts are performed in an order different than illustrated, which may include performing some acts simultaneously, even though shown as sequential acts in illustrative implementations.
The claims should not be read as limited to the described order or elements unless stated to that effect. It should be understood that various changes in form and detail may be made by one of ordinary skill in the art without departing from the spirit and scope of the appended claims. All implementations that come within the spirit and scope of the following claims and equivalents thereto are claimed.
