Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
  • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
  • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
  • B60L58/13—Maintaining the SoC within a determined range
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
  • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
  • B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
  • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
  • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
  • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
  • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
  • H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2240/00—Control parameters of input or output; Target parameters
  • B60L2240/40—Drive Train control parameters
  • B60L2240/54—Drive Train control parameters related to batteries
  • B60L2240/545—Temperature
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2260/00—Operating Modes
  • B60L2260/40—Control modes
  • B60L2260/50—Control modes by future state prediction
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
  • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • 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
• • 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
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
• • 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
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

• the invention relates to a method for managing a state of charge of a connected battery for powering a power distribution network.
• This invention can be applied regardless of the type of battery and extends non-exclusively to vehicles.
• the invention finds a particularly advantageous application for managing the state of charge of a plurality of connected batteries for powering a power distribution network, so as to maximize their residual capacity.
• the problem posed here is to optimize the management of the state of charge of a battery.
• it is a question of minimizing the calendar degradation of the battery.
• It also aims at optimizing the choice of the ranges of value of the state of charge of the battery by taking into account the operating state of the battery; in particular, the present invention aims to take into account the operating state of the battery, such as charging, discharging, or periods of non-use of the battery (periods during which the battery is neither charged nor discharged but can self-discharge). It also aims at optimizing the ranges of value of the state of charge of the battery according to the operating temperature of the battery and / or the ambient temperature to minimize the state of aging of the battery.
• the invention particularly relates to a method of managing a state of charge of a connected battery for powering a power distribution network.
• the method comprises a step of estimating a value range of said state of charge minimizing the state of aging of the battery. It also comprises a step of charging or discharging the battery to reach an optimal state of charge value within said value range.
• the method according to the invention is characterized in that it advantageously comprises a preliminary step of detecting a state of non-use of the battery during which the battery is neither charged nor discharged.
• the detection of the state of not using the battery makes it possible to place the battery in favorable conditions minimizing its state of aging when the battery is not used.
• the expiration of a predetermined period during which the battery is in the idle state is detected.
• the value range of said state of charge of the battery minimizing the state of aging of the battery is defined by a first minimum value and a second maximum value that vary according to a temperature related to the battery. .
• the temperature associated with the battery is an operating temperature of the battery.
• the temperature associated with the battery is an ambient temperature of an enclosure in which the battery is installed.
• a step makes it possible to estimate the temperature related to the battery from said ambient temperature and information relating to the operation of the battery.
• the first value is equal to 10%
• the second value is 70%.
• an operating temperature of the battery substantially equal to 45 ° C:
• the first value is equal to 50%, and the second value is equal to 70%.
• an operating temperature of the battery substantially equal to 55 ° C:
• the first value is 50%
• the second value is equal to 70%.
• the method includes the following preliminary steps:
• an additional step makes it possible to determine the aging state of a battery by collecting information relating to physical quantities of the battery.
• a second object of the invention is also contemplated, in which a system for managing a state of charge of a battery comprises means for implementing the method according to any one of the preceding embodiments.
• Figure 1 shows an example of architecture of the stationary storage system.
• FIG. 2 shows a diagram illustrating an exemplary management method according to the invention.
• Figure 3 shows a diagram illustrating another example of a management method according to the invention.
• FIG. 4 shows a curve representing the evolution of the degradation coefficient of the battery (ie its state of aging) as a function of the state of charge of the battery in a range of operating battery temperatures of between 10 ° C. and 25 ° C.
• FIG. 5 shows a curve representing the evolution of the degradation coefficient of the battery (ie its state of aging) as a function of the state of charge of the battery for a battery operating temperature substantially equal to 45 ° C. .
• FIG. 6 shows a curve representing the evolution of the degradation coefficient of the battery (i.e. its aging state) as a function of the state of charge of the battery for a battery operating temperature substantially equal to 55 ° C.
• a stationary storage system 56 controls this information.
• the main function of the stationary storage system 56 is to implement the management of the information on the state of each battery 50 constituting the plurality of batteries 50 in order to allow a use of the plurality of batteries 50 to the maximum of its capacities. while minimizing the aging state of the battery 50.
• the stationary storage system is capable of collecting, in a step 20, information relating to physical quantities for determining the state of aging of a battery, of the following type (non-exhaustive list):
• the stationary storage system 56 for the residual capacities of a plurality of batteries 50 comprises the following elements:
• a system 51 for monitoring the battery a system 52 for stationary storage control
• This stationary storage system 56 is connected to the AC network 55.
• the battery monitoring system 51 acquires physical quantities of the battery (temperature measurements, voltages of each cell, current, etc.). These physical quantities notably have the function of determining the state of aging of the battery 50. Battery monitoring system 51 makes calculations from these measurements in order, for example, to determine:
• the supervision system 51 of the battery 50 communicates the physical quantities for determining the aging state of the battery 50 to the stationary storage control system 52.
• the battery monitoring system 51 makes it possible in particular to perform a step 70 for measuring the operating temperature of the battery 50.
• the stationary storage control system 52 is subject to certain energy constraints. For example, the stationary storage control system 52 may require charging the battery 50 during off-peak hours and discharging it during peak hours.
• the stationary storage control system 52 establishes charge or discharge instructions as a function of the information it receives and its energy constraints.
• the instructions are sent to the charger 53 or the inverter 54 to be realized: the battery 50 is charged or discharged.
• the power distribution network 55 comprises the following steps:
• the preliminary step 120 including detecting a state of unused the battery during which the battery is neither charged nor discharged, can for example detect the expiration of a predetermined period during which the battery is in the state of inuse.
• This preliminary step advantageously makes it possible to put the battery under conditions that minimize its calendar degradation.
• the state of non-use of a battery is a state in which the battery is particularly vulnerable, that is why charging or discharging the battery to reach a value within the value range minimizing its state of aging makes it possible to preserve said battery . In the absence of active use, it is therefore appropriate to position as often as possible the battery 50 in a state of charge SOC limiting this degradation.
• the battery 50 can typically be charged or discharged without taking into account said value range minimizing the aging state of the battery 50. requesting it to operate the storage system 56, the stationary storage control system 52 is free to decide the level of charge to position each battery 50.
• the invention also provides a method for managing a state of charge of a plurality of batteries connected together to power a grid 55 for distributing electrical energy, this method comprising a storage phase for storing in the plurality of batteries 50 of the energy coming from the network 55 and a destocking phase to restore the energy on the network 55.
• the step 110 of charging the battery 50 corresponds to the storage phase to store in the plurality of batteries of the energy from the network 55 and the discharge of the battery 50 corresponds to the destocking phase to restore the energy on the network 55.
• the stationary storage control system 52 is free to decide on the level of charge to which to position each battery 50.
• a stationary storage system 56 comprising a plurality of batteries 50
• these are conventionally located in narrow and closed enclosures, such as technical rooms. Consequently, the ambient temperature of an enclosure in which battery 50 is connected to power a power distribution network 55 varies in function of parameters such as the geographical position of the enclosure concerned, the position of the enclosure within the building, etc. In addition, for the same chamber, the ambient temperature may vary over time depending on the sun exposure, seasons etc.
• the use of such a stationary storage system 56 will generate heat and affect the ambient temperature of the room.
• step 120 including detecting the state of non-use of the battery is particularly advantageous because it makes it possible to update parameters that can serve to bring the battery 50 in the value range of the state of charge minimizing the aging state of the battery.
• SOCi fi (T)
• SOC2 f 2 (T)
• a step 60 for measuring the ambient temperature of the enclosure in which the battery 50 is installed is thus provided.
• a step 70 of measuring the operating temperature of the battery 50 is thus provided.
• the step 65 including recording the information relating to the operation of the battery may for example correspond to a time interval during which the battery is neither charged nor discharged.
• the first value SOC1 and the second value SOC2 may follow a step 90 during which the first value SOC1 and the second value SOC2 are calculated as a function of the operating temperature of the battery and the ambient temperature of an enclosure in which the battery 50 is connected to power a network 55 of energy distribution.
• the first value SOC1 and the second value SOC2 are calculated during step 90 solely as a function of the operating temperature of the battery.
• the first value SOC1 and the second value SOC2 are calculated during step 90 as a function of the ambient temperature.
• the type of battery 50 used (lithium-ion etc.) must also be taken into account.
• the batteries 50 constituting the plurality of batteries connected for a power distribution network 55 do not all have the same sensitivities at ambient temperature. The value ranges of the state of charge of each battery minimizing the state of aging may therefore be different.
• the first value (SOC1) is equal to 10%
• the second value (SOC2) is equal to 70%
• the first value (SOC1) is equal to 50%
• the second value (SOC2) is equal to 70%
• the first value (SOC1) is equal to 50%
• the second value (SOC2) is equal to 70%
• the state of charge SOC of the battery 50 calculated according to the operating temperature of the battery and / or the ambient temperature of an enclosure in which the battery 50 is connected to supply a distribution network of energy, corresponding here to the step 90 shown in Figure 2, it is appropriate to translate this charge SOC state energy to identify the set to be applied to the energy storage system 56. For example, for a battery 50 having a capacity equal to 14KWh, we would obtain a target energy range of between 7kWh and 9.8kWh which minimizes the aging state of the battery 50.
• the management method may also include the following preliminary steps:
• a step 30 of selecting a battery 50 from said plurality of batteries 50 is a step 30 of selecting a battery 50 from said plurality of batteries 50.
• This embodiment is advantageous for a plurality of batteries connected together to power an electrical network.
• the management method may also comprise a step 20 for collecting information relating to physical quantities to determine the aging state of a battery 50. This information can be used to rebbus a battery 50 if its performance is insufficient.
• the minimum energy level guaranteed to the customer is E2nd, MiN- This minimum energy level guaranteed to the customer E2nd, MiN is established according to the operating temperatures to which the battery 50 is subjected. In practice, it will therefore be necessary to verify that the first value SOC1 which is lower than the second value SOC2 allows to provide an energy higher than E2nd, MiN.
• the stationary storage control system 52 performs most of the calculations of interest to us in the context of the present invention.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Chemical & Material Sciences (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Secondary Cells (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)

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• 2014
  • 2014-01-20 FR FR1450420A patent/FR3016737B1/fr active Active
• 2015
  • 2015-01-15 CN CN201580013995.8A patent/CN106103180A/zh active Pending
  • 2015-01-15 EP EP15705630.0A patent/EP3096974A1/de not_active Ceased
  • 2015-01-15 KR KR1020167020665A patent/KR20160110409A/ko not_active Application Discontinuation
  • 2015-01-15 JP JP2016564418A patent/JP6738738B2/ja active Active
  • 2015-01-15 WO PCT/FR2015/050090 patent/WO2015107299A1/fr active Application Filing
  • 2015-01-15 US US15/111,404 patent/US20160332531A1/en not_active Abandoned

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