Patent Application
20200269715
The invention relates to a method for intelligently managing the electrochemical batteries of an electrical supply installation. It also relates to a system implementing such a method, and an electrical supply installation implementing such a method or such a system.
The field of the invention is the field of electrical supply installations comprising several electrochemical batteries, in particular of LMP® (for “Lithium Metal Polymer”) type, mounted in parallel, in order to provide a supply signal.
Stationary electrical supply installations are known comprising several electricity storage modules mounted in parallel and each comprising one or more electrochemical batteries, in particular of LMP® type. Each module makes it possible to store electrical energy then deliver a high-voltage signal, for example to recharge an electric vehicle or to supply a building.
Certain stationary electrical supply installations are autonomous and couple means for energy production, such as for example solar panels or wind turbines, with electrical energy storage modules, with a view to recharging said modules.
At the same time, it is known that electrochemical batteries are unsuited to slow discharge. In addition, in the case of the batteries of LMP® (for “Lithium Metal Polymer”) type, it is necessary to maintain all the batteries at a minimum operating temperature, in general greater than or equal to 80° C. In addition, when several batteries are used at the same time, it is preferable that each of these batteries has the same remaining charge level.
However, currently, no method exits for managing the rechargeable electrical energy storage modules of an electrical supply installation making it possible to satisfy all of these requirements intelligently.
A purpose of the present invention is to overcome this drawback.
Another purpose of the invention is to propose a method for intelligently managing the electrical energy storage modules, mounted in parallel, of an electrical supply installation mounted in parallel.
It is also a purpose of the invention to propose a method for managing the electrical energy storage modules of an electrical supply installation, mounted in parallel, making it possible to optimize the life span of said modules while maintaining said modules ready for use at any moment.
The invention makes it possible to achieve at least one of these aims by a method for managing a plurality of rechargeable electrical energy storage modules of an electrical supply installation, in particular stationary, said modules each comprising at least one rechargeable electrochemical battery, in particular of LMP® type, and being arranged in parallel with each other, said method comprising:
Thus, the method according to the invention proposes to separate virtually the rechargeable electrical energy storage modules into several groups, and a use of one group at once for producing a supply, in particular for recharging an electric vehicle, supplying a building, supplying a complex, supplying an electric/electronic device, in particular a communication device such as a Wifi hotspot or an antenna. Thus, it is possible to apply rapid discharge cycles to each group and to optimize the life span of each module.
In addition, when a group called passive group is not used, then a module called operational module, forming part of said passive group, is used for supplying the other modules of this passive group in order to regulate them so as to maintain them ready for use.
In the present application, by “separation” is meant a virtual grouping of the modules, independently of their physical arrangement.
Preferentially, the regulation phase of a passive group can carry out a balancing of the remaining charge level of at least one, and in particular of each, module of said passive group.
For example, the regulation phase can carry out a discharge of the operational module in order to balance its remaining charge level with the remaining charge level of at least one other module of the passive group. In this case, the operational module can be used for supplying, for example, an auxiliary device of the vehicle, in particular external to the passive group.
Alternatively, or in addition, the operational module of the passive group can be used in order to balance the remaining charge levels of the modules of the passive group, for example by supplying at least one other module of the passive group. In this example, the operational module discharges into at least one other module of the passive group in order to recharge said at least one other module of the passive group.
Alternatively, or in addition, the regulation phase of a passive group can carry out temperature maintenance of at least one, in particular of each, module of said passive group.
In other words, the operational module of the passive group can be used for maintaining heated at least one, in particular all the modules of the passive group, including itself, at a temperature greater than or equal to a predetermined temperature.
When the regulation phase of a passive group carries out temperature maintenance, then the operational module of the passive group is used for supplying a heating means, such as a heating resistor, of at least one, in particular of each, module of the passive group, including its own.
According to a particularly preferred version of the method according to the invention, for at least one passive group, the regulation phase can comprise a change-over, in particular in turn, of the operational module within the passive group.
Thus, the method according to the invention allows better managing of the modules of the passive group to be carried out.
Advantageously, the change-over can be carried out as a function of the remaining charge level (RCL) of each of the modules of the passive group.
In particular, the change-over can be carried out when the remaining charge level of the operational module becomes less than or equal to the remaining charge level of another module of the passive group, of a first predetermined value.
Advantageously, the first predetermined value can correspond to a percentage of a maximum charge capacity (MCC), or of a remaining charge level (RCL), of at least one of the modules of the passive group.
According to a first embodiment, the first predetermined value can be constant.
For example, the first predetermined value can be equal to 5% of the MCC of a module.
According to another embodiment, the first predetermined value can be variable.
More particularly, the first predetermined value can be a function of the remaining charge level (RCL) at the level of each module of the passive group.
In particular, the predetermined value can reduce when the remaining charge level (RCL) of each module of the passive group reduces.
According to a non-limitative embodiment, the first predetermined value can be equal to:
According to a non-limitative embodiment, the method according to the invention can comprise switching the supply from one group to another, carried out as a function of the remaining charge levels of said groups.
More particularly, the switching of one group to another can be carried out when the remaining charge level of the active group is less than or equal to the remaining charge level of a passive group, in particular of a second predetermined value.
In the case where a continuous supply without micro power outages is desired from the electrical supply installation, the switching can be carried out so as to ensure a continuous supply.
Such switching can be carried out in different ways.
According to a first embodiment, the switching from a first group to a second group can be carried out by connecting the second group before disconnecting the first group, in which case a very short period exists where the supply is ensured by the first and the second group.
According to another embodiment, the switching from a first group to a second group can be carried out by using a third group used for supply solely during the switching, in order to ensure continuity of the supply.
Of course other embodiments are possible.
Advantageously, the second predetermined value can correspond to a percentage of a maximum charge capacity (MCC), or to a remaining charge level (RCL), of at least one of the groups.
According to a first embodiment, the second predetermined value can be constant.
For example, the second predetermined value can be equal to 5% of the MCC of a group.
According to another embodiment, the second predetermined value can be variable.
More particularly, the second predetermined value can be function of the RCL of each group.
In particular, the second predetermined value can reduce when the RCL of each group reduces.
According to a non-limitative embodiment, the second predetermined value can be equal to:
In a preferred version, each group can comprise an identical number of modules.
The number of modules can be determined as a function of a desired total power during the supply step and of the power which can be delivered by each module.
In a preferred version, all the modules are identical and each deliver one and the same nominal power.
Advantageously, the operational module of the passive group can moreover be used for the supply of an auxiliary device within the electrical supply installation, internal or external to the passive group.
The method according to the invention can moreover comprise, for each module, a measurement of at least one, in particular of each, of the following parameters:
At least one of these parameters can be used for determining if a switching, respectively a change-over, to another group, respectively to another module of the passive group, must be carried out or not.
According to another aspect of the same invention, a system for managing a plurality of rechargeable electrical energy storage modules of an electrical supply installation is proposed, in particular stationary, said modules each comprising at least one rechargeable electrochemical battery, in particular of LMP® type, and being arranged in parallel with each other, said system comprising:
According to yet another aspect of the invention, an electrical supply installation is proposed, in particular stationary, comprising a plurality of rechargeable electrical energy storage modules, said modules each comprising at least one rechargeable electrochemical battery, in particular LMP®, and being arranged in parallel with each other, said modules being managed:
Advantageously, the installation according to the invention can comprise a means for the production of electrical energy from a renewable source, such as at least one solar panel and/or at least one wind turbine.
The energy produced by such a means can be used for recharging at least one rechargeable electrical energy storage module.
Alternatively or in addition, at least one rechargeable electrical energy storage module can be recharged from the power grid.
The electrical supply installation according to the invention can be an electrical recharging station for electric vehicles.
Alternatively, the electrical supply installation according to the invention can be an electrical supply installation for a building such as a cinema, a complex such as a sports ground, or an electric/electronic communication device such as a Wifi hotspot or an antenna, etc.
Other advantages and characteristics of the invention will become apparent on examination of the detailed description of embodiments which are in no way limitative, and the attached drawings, in which:
It is well understood that the embodiments which will be described hereinafter are in no way limitative. It is possible to envisage variants of the invention comprising only a selection of the characteristics described hereinafter, in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention with respect to the state of the prior art. This selection comprises at least one, preferably functional, characteristic without structural details, or with only a part of the structural details if this part alone is sufficient to confer a technical advantage or to differentiate the invention with respect to the state of the prior art.
In the figures, the elements common to several figures retain the same reference.
The electrical supply installation 100, represented in
The installation 100 comprises a first group 102 and a second group 104 each comprising four rechargeable electrical energy storage modules, namely the modules 1061-1064 for the group 102 and the modules 1065-1068 for the group 104.
Each rechargeable electrical energy storage module 106 comprises one or more batteries of LMP® (for “Lithium Metal Polymer”) type. The modules 106 are all identical and provide the same nominal power.
One or more means 108 for producing electrical energy from a renewable source, such as for example solar panels 1081 or wind turbine(s) 1082, can be used for recharging the modules 106. The production means 108 may or may not form part of the installation 100.
Alternatively, or in addition, each module 106 can be recharged from an electrical energy distribution grid, shown by the line referenced 110.
The installation 100 makes it possible to supply a charging terminal, a complex, and more generally an entity, via an electricity grid shown by the line referenced 112. One or more group controller make it possible to control the operations of the installation 100.
In the example represented in
The group controllers 2021 and 2022 are in turn connected to a central controller 204, which is itself connected, directly or indirectly, to a entity 208 to be supplied, denoted “E”, such an entity being able to be an electric vehicle, a building, an electric/electronic device, a Wifi hotspot, an antenna, etc.
In particular, each module 1061-1064 of the group 102 is connected to the group controller 2021 via a contactor, respectively 2061-2064, which can be controlled by the group controller 2021 or by the central controller 204. Similarly, each module 1065-1068 of the group 104 is connected to the group controller 2022 via a contactor, respectively 2065-2068, which can be controlled by the group controller 2022 or by the central controller 204. Each contactor 206i can be controlled individually by the central controller 204, directly or via the group controller 2021-2022, in order to be set either in a closed state allowing the current provided by the module 106i to pass, or in an open state not allowing the current provided by the module 106i to pass.
The central controller 204 comprises:
The central controller 204 is moreover configured for comparing each of the values measured for each module, to one or more predetermined values, or ranges of values, in order to determine whether said module is faulty or operational.
Of course, the measurement and the comparison of these parameters can alternatively be carried out by a unit other than the central controller 204, such as for example by each group controller 2021-2022.
The example shown in
In the example shown in
The method 300, shown in
During this separation step 302, the physical arrangement of the modules can be taken into account for constituting the groups, for example as shown in
During a step 304, the method 300 produces an alternate supply from each of the groups in turn. To do this, a step 3041 produces a supply from one of the groups. The group in the process of supplying is called active group and the other group(s) is(are) called passive group(s). The remaining charge level (RCL) of the active group is monitored during the supply step 3041. Then, as a function of a predetermined rule, a step 3042 produces switching of the supply to another passive group, and so on.
Switching from one group to another, during step 3042, can be carried out as a function of the remaining charge levels (RCL) of each group and of the maximum charge capacity (MCC) of the groups.
In particular, switching from the active group to a passive group is carried out when the RCL of the active group becomes less than or equal to the RCL of a passive group of a predetermined value, which is equal to:
Such switching makes it possible to optimize the discharge of all of the modules and to have a remaining charge level approximately equivalent for each module.
During the supply by an active group, the method 300 comprises a regulation phase 306 carried out within each passive group.
To do this, for each passive group, a step 3061 produces a supply from a module of the passive group:
The module in the process of supplying the passive group is called operational module and all the other modules of the passive group are called passive modules.
The remaining charge level (RCL) of the operational module of the passive group is monitored during the supply step 3061. Then, as a function of a predetermined rule, a step 3062 produces a change-over of the operational module within the passive group.
The change-over of the operational module, during step 3062, can be carried out as a function of the remaining charge levels (RCL) of each module of the passive group and of the maximum charge capacity (MCC) of a module of the passive group.
In particular, the change-over of the operational module within a passive group is carried out when the RCL of the operational module becomes less than or equal to the RCL of a module of a predetermined value, which is equal to:
The regulation phase 306 can be carried out for maintaining the temperature of the modules of the passive group above a predetermined value, such as for example 80° C. In this case, during the regulation phase 306, the operational module supplies the heating resistor of each module of the passive group, including its own.
In addition or alternatively, the regulation phase 306 can be carried out in order to balance the remaining charge level (RCL) of the modules of the passive group. In this case, during the regulation phase 306, the operational module can supply the heating resistor of each module of the passive group, and/or an auxiliary device external to the passive group.
The entity “E” is supplied alternately by the groups 102 and 104. Thus:
With reference to
With reference to
With reference to
Of course, the invention is not limited to the examples detailed above.
In particular, the number of storage modules, the number of groups of modules, and the number of modules for each group, are not limited to those given in the examples described above, and correspond to the maximum of energy storage modules dependent in particular on the battery life and the power desired at the level of the installation.
The invention is intended for any stationary application requiring such an installation.
| Number | Date | Country | Kind |
|---|---|---|---|
| 1655625 | Jun 2016 | FR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/063541 | 6/2/2017 | WO | 00 |
