The disclosure generally relates to portable computing devices and more particularly relates to charging a battery for a portable computing device.
Portable battery-operated devices, e.g., cell phones, computers, handheld electronic devices, personal digital assistants, DVD devices, television devices, and other portable computing devices are becoming more portable and more popular. As consumer demand grows for such devices, manufacturers and designers try to make portable computing devices smaller and more functional.
While these two goals of making things smaller and adding functionality are often at odds with each other, new portable computing devices have made use of creative solutions to further both of these goals. One approach to adding more features while keeping the size of a device small is to provide a device with two or more components that move with respect to each other such that the device is smaller in size when being transported but may be “expanded” when in use to provide a more user-friendly interface for a user.
As known, the cell phone 100 may contain a display 106, a keypad 108, additional function keys 110, an antenna 112, a microphone 114, and a speaker 116. One skilled in the art will recognize that the cell phone 100, or any other similar device, may contain other features, such as, for example, additional control buttons, and that the locations of the features disclosed herein may be in any suitable location on the device 100.
As shown, portable computing devices are becoming fill of more features, while at the same time becoming smaller in design and form. As such, people have become more willing to carry around these portable computing devices and rely more heavily on them. As this dependence on portable electronic devices, such as cell phones, increases, however, people may be at risk if the portable electronic device should fail, especially if such failure occurs during an emergency. One cause of an inoperable device is a lack of power. Although longer lasting batteries are now common, batteries that power portable computing devices are still subject to discharge with use or even over time while not in use. Thus, it is possible for a portable computing device to be inoperable because there is not an adequate power supply during situations where it is needed most, such as in emergency situations.
To overcome these problems, various solutions exist. For example, longer lasting batteries have been developed, and various charging apparatuses exist. For example, portable computing devices, or the batteries within, may often be charged by several different methods, such as by plugging it into a power outlet or cigarette lighter (also known as an auxiliary power) outlet directly, removing the battery and charging it in a charging unit, or even plugging the device into a USB port of a computer, among other things.
Furthermore, other various techniques exist that are more apt for emergency situations where a more suitable charging method such as an electrical outlet may not be available. For example, various hand crank devices exist. These devices are external devices that may be plugged into a portable computing device much like an electrical cord may be plugged into the device to charge it. The difference, however, is that instead of plugging the other end into a power source, such as an electrical outlet, the end of the cord is attached to a generator, often one that may use mechanical energy, such as turning a crank, into an electrical current, which may then be used to charge a battery. While turning a hand crank, or performing other suitable methods, may not be the most desirable way to charge a portable computing device, it may prove necessary, especially in emergency situations. Another possible solution is to provide an external device containing a battery to act as a power source. This solution, however, has disadvantages. For example, a user must always remember to charge the external device, even though the user may infrequently use it.
These solutions, however, are not without their problems. For example, a user must carry around the extra piece of equipment (i.e., the external charging device), which may be an inconvenience. Furthermore, users may often find themselves most needing to charge a portable computing device, such as a cell phone, when they least expect it. As such, the users may not always have the foresight to carry the external charging device with them at the times when they need it most.
For these reasons, among others, a need exists for an improved charging device and method for a portable computing device.
The disclosure will be more readily understood in view of the following description when accompanied by the below figures and wherein like reference numerals represent like elements, wherein:
A portable mobile device includes a first component and a second component movably connected to the first component. The first and second component are configured to be movable with respect to each other during the normal operation of the portable computing device. The portable computing device further includes a current generator connected to the first component and/or the second component. The current generator is operable to generate a current when the first component and the second component move with respect to each other in an engaged mode. Although the device is capable of generating a current based on mechanical motion, the device may still use conventional means for charging the battery, such as an external charger.
The portable computing device may further include an override button, such as a mechanical override mechanism. In the case of a mechanical override mechanism, the mechanism may disengage the portable computing device from the engaged mode, thereby placing the device in a disengaged mode. When in an engaged mode, the current generator is operable to generate the current when the first component and the second component move with respect to each other. When in a disengaged mode, the current generator is not operable to generate the current when the first component and second component move with respect to each other.
The first component and the second component may be movably connected by in any suitable manner. For example, they may be pivotally connected or slidably connected. Furthermore, in one example embodiment, a drive assembly may translate the pivotal movement or a sliding movement into rotational kinetic motion for generating the current.
A method for generating a current for providing power in a portable computing device is also disclosed. The portable computing device has a first component and a second component movably connected to each other. The method includes moving the first component with respect to the second component from a first position to a second position and then moving the two components from the second position back to the first position (or close thereto). This motion, when using an appropriate device, is operable to generate a current.
Among other advantages, a portable computing device, as disclosed, is useful for providing power for a portable computing device in situations where a standard power source, e.g., an electrical outlet, is unavailable. Because the current generator is self-contained within the portable electronic device itself, a user does not have to carry additional accessories for potential emergency situations. Furthermore, the disclosed portable computing device makes use of a normal movement that is already associated with a similar portable computing device to generate a current. Thus, a user may extend the battery life of a portable computing device if the user finds himself/herself in a situation where an accessible external power source or extra battery is not available.
The first and second components 102, 104 may be any suitable components of a portable computing device. For example, they may contain electrical components, buttons, displays, or any other suitable features, but it is also conceivable that one of the components 102, 104 may be a cover mechanism without any additional electronic features.
The first component 102 is movably connected to the second component 104 at a hinge mechanism containing a current generator 602. The first component 102 and second component 104 are configured such that the first component and the second component are movable with respect to each other during a normal operation of the portable computing device. A normal operation includes, for example, placing the phone in an open orientation (“opening the phone”), placing the phone in a closed orientation (“closing the phone”), answering a phone call, ending a phone call, or any other suitable mechanical or electronic operation typically associated with opening or closing a portable computing device, such as a cell phone. A normal operation, however, does not include charging the battery.
The portable computing device 600 also includes a current generator 604, which is operative to generate a current in response to mechanical movement. The current generator 604 is connected, either directly or indirectly, to at least one of: the first component 102 and the second component 104. It is configured such that when the first component 102 and the second component 104 move with respect to each other in an engaged mode, the current generator 104 is operable to generate a current.
It is understood that device 600 may have only one mode, i.e., it may always be engaged. One skilled in the art will appreciate, however, that when in an engaged mode, i.e., a mode operative to convert mechanical motion into an electrical current, it may be more difficult to, for example, open and close the device because of the additional force that may be required to move the first component 102 with respect to the second component 104. Thus, the device 600 may have an engaged mode that makes the current generator 604 operative to generate a current when the first component 102 and second component 104 move with respect to each other. The device 600 may also have a disengaged mode that, when in this mode, allows the first component 102 to move with respect to the second component 104 without the current generator 604 being operable to generate a current.
Device 600 may include a mechanical override mechanism 606 that is operative to disengage the portable computing device 600 from the engaged mode, which thereby places the portable computing device 600 in a disengaged mode. Conversely the mechanical override mechanism 606 is operative to place the portable computing device 600 in an engaged mode. One example of a mechanical override mechanism 606 is described in more detail below with respect to
It is further contemplated, however, that a software override may be used. For example, changing a cell phone from an open position to a closed position causes the cell phone to hang up an existing call in a normal operation of some devices. It is contemplated that a user may override this functionality via a button or setting via a software interface so that a user may open and close a cell phone to charge a battery without having the phone perform its normal operation, such as disconnecting a call. In other words, a cell phone may have a first logic state associated with an open position and a second logic state associated with a closed position. A logic state may affect, for example, that status of a phone call, what is displayed on the display, sounds, the ability to receive a call, etc. By changing between the two states frequently to charge a batter, negative side effects may result (e.g., inadvertently answering a phone call and then immediately hanging up). As such, the device 600 may have a device override button (e.g., a physical, mechanical button or a “button” selected via input to the phone, e.g., a soft key or through a touch screen). The override button may override a control mechanism (e.g., software or any suitable logic) that usually places the portable computing device in a different logic state. It is understood, for example, that the device override button may be the mechanical override mechanism 606, which is also operative to provide input to a processing device running software so that the device 600 may override the normal operation of the control mechanism. [00411 In another example having a software override, a timer delay is used. For example, if a user normally changes a portable computing device from a closed orientation to an open orientation, the device may typically switch from a first logic state to a second logic state. This may be undesirable if the user is changing the orientation of the device only to charge the battery or a capacitor. Instead of using an override procedure as described above, which requires extra steps for a user, a timer delay may be used such that when transitioning from a first orientation (e.g., a closed orientation) to a second orientation (e.g., an open orientation), the device does not immediately transition to a different logic state. Instead, a delay may exist such that the device must remain in the particular orientation for a pre-determined amount of time before the device transitions to a different logic state.
In the example portable computing device 600, the first component 102 and the second component 104 are pivotally movable with respect to each other. In one example, the current generator may include a drive assembly 702 for translating movement, such as pivotal movement, between the first component 102 and second component 104 into rotational kinetic motion for generating the current. As best seen in
In further detail, rotor supports 712, 714 are attached to the portion 704 of the first component 102 and are at distal ends 716, 718 of a rotating shaft 720 (e.g., spindle). The rotating shaft 720 is able to rotate relative to the rotor supports 712, 714. Two magnets 702 and 710 sit on opposite sides of the rotating shaft 720 and have an oppositely oriented field facing the rotating shaft 720. For example, magnet 708 may have its south pole facing the rotating shaft while magnet 710 has its north pole facing towards the rotating shaft 720, as one of ordinary skill in the art will appreciate. Magnets 708, 710 may be flexible, rubber or polymer magnets and could be each made of a series of different magnets. Attached to the rotating shaft 720 is a coil 706 that rotates along with the shaft. Although shown as only one coil, it is understood that any suitable number of coils and magnets may be used, and any suitable winding technique and other technique for increasing the efficiency of the current generator 604 may be used. The ends 722, 724 of the coil make electrical contact with armature 726, as will be understood by one of ordinary skill in the art.
In operation, a ring gear 728 is fixedly attached to the rotating shaft 720. As best shown in
In view of the disclosure throughout, one of ordinary skill in the art will appreciate how this clutch mechanism 606 may be used to allow a device to be in a disengaged state such that the device will not generate a current or to be in an engaged state such that the device will generate a current when a first component and a second component move with respect to each other.
It is understood, however, that any suitable clutch mechanism may be used and that other suitable mechanisms are within the spirit of this disclosure. For example, it should be noted that in
It is recognized that other variations may exist. For example, one of ordinary skill in the art will readily recognize that the rotating shaft 720 will continuously change rotational direction when, for example, the movement between the first component 102 and second component 104 changes direction with respect to each other. Thus, rectifying circuitry and/or other circuitry may be required to make use of the current produced by the current generator 604 for example,
It is also contemplated, however, that a first component 102 and a second component 104 may be movable with respect to each other in any suitable manner. For example, they may be slidably movable with respect to each other as shown in device 1100 in
In this example embodiment, however, the first component 502 moves in a slidable fashion relative to the second component 402, not pivotally as in the example described above. As such, the drive assembly 702 in this example embodiment is operable to translate lateral, sliding movement into rotational kinetic motion (i.e., for turning the rotating shaft 720) for generating a current. The second component 402 is designed to slidably interact with the first component 502, and any suitable design may be used. For example, there may be a top side portion (not shown), such that all of the side portions form a cavity into which first component 502 may slide in and out. It is also contemplated that the second component 402 not have any sides but instead be a more planar surface that abuts the first component when in a closed position.
One skilled in the art will recognize various designs that allow a first component 502 and a second component 402 to sidably move with respect to each other while having a current generator 1202 connected to either of the first component 502 or second component 402 such that a slidable motion between the two is operable to drive a current generator.
A method for generating a current for providing power in a portable computing device having a first component and a second component movably attached to each other and configured to move with respect to each other during a normal operation of the portable computing device is shown in
As one will of ordinary skill in the art will recognize, the method may include additional steps before, after, or between the methods shown and described in
It is understood that this method may be performed by one of the example devices described above but that it may also be performed by any suitable device.
Thus, among other advantages, a portable computing device, as disclosed, is useful for providing power for a portable computing device in situations where a standard power source, e.g., an electrical outlet, is unavailable. Because the current generator is self-contained within the portable electronic device itself, a user does not have to carry additional accessories for potential emergency situations. Furthermore, the disclosure makes use of a normal movement that is already associated with a similar portable computing device to generate a current. Thus, in view of this disclosure, a user may extend the battery life of a portable computing device if the user finds himself/herself in a situation where an accessible external power source or extra battery is not available.
The above detailed description of the disclosure and the examples described herein have been presented for the purposes of illustration and description only and not by limitation. For example, it is understood that although a cell phone has been used throughout this disclosure for example purposes, the subject matter disclosed herein may be used with any suitable device. It is therefore contemplated that the present disclosure cover any and all modifications, variations or equivalents that fall within the spirit and scope of the basic underlying principles disclosed above and claimed herein.