Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
  • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries

Definitions

• the present invention relates to the field of DC batteries, and more particularly batteries with optimized lifetime.
• a battery designed for electromobility is usually considered to have reached the end of its life when it has lost 20% of its original capacity.
• a battery that still retains 80% of its initial capacity should still be able to serve secondary uses, even if it is no longer suitable for electromobility, its first use.
• the invention therefore aims to provide a simple solution to all or part of these problems.
• the present invention relates to a method for managing an electric energy storage battery, in which the battery is arranged to operate alternately:
• the battery further comprising an electronic unit configured to implement the following steps during a first period of operation of the battery in the first configuration:
• At least one means for measuring the battery so as to measure at least one value of at least one operating parameter of the battery, determining the end of the first operating period as a function of the at least one measured value for the at least one operating parameter,
• the management method comprising a phase of using the battery during a second period of operation subsequent to the first period of operation, wherein the battery adopts the second configuration.
• the first configuration is adapted to a first use which requires performance of the battery, during the first period of operation, greater than its use during the second period of operation; the second configuration of the battery provides other functions adapted to the constraints of the second period of operation.
• a new operating period can begin, during which the user can operate the battery in the second configuration in a remote environment.
• different use for the operation of the battery An example of a first use in mobility, having mechanical, vibration, shock and temperature constraints different from a second stationary use, for example a domestic interior environment, requiring a more precise thermal management, which will result in to increase the life of the battery.
• the battery comprises a plurality of electric energy storage cells, and wherein the at least one measurement means comprises at least one of:
• a means for measuring an electric power supplied by each cell of the plurality of cells, and by the plurality of cells a means for measuring a mechanical shock indicator and for counting a number of mechanical shocks suffered by the battery, a means of measuring a humidity level in the battery,
• At least one operating parameter of the battery comprises at least one of the parameters among the following parameters:
• a temperature shock indicator of the plurality of cells a minimum temperature of each cell of the plurality of cells, in operation or out of operation,
• the at least one operating parameter of the battery comprises:
• the determining step consists in determining the beginning of a new operating period if the value of the indicator is greater than 80% and if the value of the number of charge / discharge cycles is greater than 1000.
• the method further comprises a final phase (201) of battery reform is implemented if the value of the health status indicator of the plurality of cells is greater than 80% and if the value of the number of charge / discharge cycles is less than 100.
• the determining step determines that the health status indicator value of the plurality of cells is greater than 80% and the value of the number of charge / discharge cycles is less than at 100, the battery can not be used in a subsequent period. The battery will need to be recycled.
• the invention also relates to a battery comprising:
• a first structure comprising a plurality of electric energy storage cells, the plurality of cells being arranged for a flow of air to flow freely around and between the cells of the plurality of cells,
• a second structure comprising an envelope configured to be removably mounted on the first structure; the battery being arranged to operate alternately: in a first configuration comprising the first structure and the envelope covering the first structure, or
• the battery further comprising an electronic unit and at least one measuring means, the electronic unit being configured to control said at least one measuring means and to carry out the steps of the method according to one of the preceding claims, during a first period of operation of the battery in the first configuration.
• the electronic unit comprises:
• a measurement module configured to measure at least one value of at least one operating parameter of the battery
• a processing module configured to determine an end of a period of time, according to the at least one measured value for the at least one operating parameter
• a communication module configured to communicate the end of its period of time determined in the previous step.
• the at least one measurement means comprises at least one of:
• means for measuring a voltage means for measuring an electrical power supplied by each cell of the plurality of cells, and by the plurality of cells, a means for measuring a mechanical shock indicator and for counting a number of mechanical shocks suffered by the battery, a means for measuring a humidity level in the battery, a means for measuring a temperature of each cell of the plurality of cells, or a temperature gradient, a means of measuring a duration balancing each cell of the plurality of cells,
• the first structure comprises a first branch interface adapted to the environment of use during the period of operation, the battery further comprising a connector adapter configured to be connected to the branch interface and provided with a second branch interface adapted to the new environment of use after the end of the period of operation.
• Figure 1 shows schematically the battery in its envelope.
• Figure 2 is a perspective view of the envelope of the battery.
• Figure 3 is a perspective view of the battery core, with a plurality of elementary storage cells.
• Figure 4 is a schematic representation of the battery with its connection interface and a connector adapter.
• Figure 5 is a schematic representation of the process.
• the method 100 is a method of managing a battery 1 for storing electrical energy.
• the battery 1 is primarily intended, in a first configuration, for a given use, for example on electric mobility applications; the battery 1 is intended, as a secondary application, in a second configuration, to a less intensive use, for example in a stationary indoor application in a home environment.
• the method 100 is primarily intended to monitor the state of health of the battery during its first use in the first configuration, so as to determine the appropriate time to move from the first mobility application to the second stationary application.
• the battery 1 for storing electrical energy is generally provided with a core constituted by a plurality of elementary cells 11 for storing electrical energy, and a mechanical system to ensure the battery mechanical robustness adapted to the constraints related to the mobility of the first use. During this first period of use, the battery must indeed withstand vibration, shock, and moisture, while remaining portable.
• constraints specific to the second stationary use are different: thermal environment, connectors, specific mechanical integration.
• the mechanical system of a battery according to the invention comprises:
• the first structure 2 has, on the other hand, the cooling characteristics enabling it to let a heat-transfer fluid pass between the cells 11, in the form of, for example, an air flow (by natural or forced convection), and makes it possible to respond standard battery standards (shock, vibration, overvoltage, over-current, short circuit, excessive temperature ).
• the envelope can be provided with a handle to allow improved portability.
• the protective casing 3 has the characteristics of resistance to direct impact and splashing water: typically, it is formed of an extruded part made of aluminum or plastic or thermoformed or injected plastic panels. For disassembly, these parts are easily connected using conventional screws, or a rail attachment system, integrated in the first structure for fixing the second structure, and for insertion into the application stationary.
• the protective envelope 3 provides protection adapted to most environments, IP65 or IP67 protection for example for outdoor environments, during the first period of use in the first configuration.
• the removal of the protective envelope 3 facilitates the removal of heat, harmful for the life of the battery and produced by the cells 11 during operation, and thus to increase the life of the battery.
• the battery 1 further comprises an electronic unit 4 and at least one means of measuring, the electronic unit 4 being configured to control said at least one measuring means and to implement the steps of the method 100 according to one of the embodiments of the invention.
• the on-board electronic unit may be of the battery management system (BMS) type.
• BMS battery management system
• the electronic unit 4 controls the measurement, by the at least one measuring means, of at least one of the following operating parameters:
• the processing of the various information thus monitored by the electronic unit 4 makes it possible to choose the passage to the second life or the end of life.
• the decisive parameters for deciding on the transition from the first use to the second use can be:
• the health status indicator of the plurality of cells may be as follows: if the value of the indicator is greater than 80% and the value of the number of charge / discharge cycles is greater than 1000, then the battery can and must go to the next use phase, according to the second configuration.
• Another example of a decision criterion concerning a non-reusable battery is as follows: if the value of the health status indicator of the plurality of cells is greater than 80% and the value of the number of charge cycles / discharges is less than 100, so the battery needs to be reformed and recycled.
• control unit can be configured to monitor the following parameters:
• shocks for example which must remain less than 1; If any of these criteria are not met, the battery must be sent for further diagnosis or recycling.
• the implementation of a communication system directly integrated in the electronic card allows a regular monitoring (near distance communication, Bluetooth type, Lora, Zigbee, ... ⁇ or continuous (remote communication type GSM) to allow to put implement a change of life or an end of life in an optimal way.
• a regular monitoring near distance communication, Bluetooth type, Lora, Zigbee, ... ⁇ or continuous (remote communication type GSM) to allow to put implement a change of life or an end of life in an optimal way.
• the management method 100 according to the invention thus comprises the following steps:
• the management method 100 comprising a use phase 200 of the battery during a second period of operation subsequent to the first period of operation, wherein the battery adopts the second configuration.
• the method may also include a final phase 201 of battery reform, final phase implemented when certain operating parameters indicate that the battery is no longer able to work properly, even in a stationary environment and in the second configuration.
• the invention also relates to a connector adapter 5, illustrated in Figure 4, which allows to integrate a simple and fast way a battery designed for a first use with a special connectivity 6, 7 in a second application requiring a specific connection 10.
• the adapter 5 has two female plugs 8, 9, each female plug being configured to cooperate with a corresponding male plug 6, 7 of the particular connector, the adapter being configured to ensure the transformation of the connector 6.7 adapted to the first use, a connector 10 adapted to the second use.
• the male plugs 6, 7 and the corresponding sockets 8, 9 are, for example, configured for the transport of signals, respectively of electrical power, and communication, to the plugs 10 of the connectors for the second application.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Secondary Cells (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Families Citing this family (2)

Citations (4)

• 2018
  • 2018-03-16 FR FR1852253A patent/FR3079085B1/fr active Active
• 2019
  • 2019-03-12 WO PCT/FR2019/050531 patent/WO2019175498A1/fr not_active Ceased
  • 2019-03-12 EP EP19713113.9A patent/EP3676889A1/de not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (1)

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