EP4487402A1 - Batterie avec circuit de maintenance intégré, véhicule et procédé associés - Google Patents
Batterie avec circuit de maintenance intégré, véhicule et procédé associésInfo
- Publication number
- EP4487402A1 EP4487402A1 EP23706630.3A EP23706630A EP4487402A1 EP 4487402 A1 EP4487402 A1 EP 4487402A1 EP 23706630 A EP23706630 A EP 23706630A EP 4487402 A1 EP4487402 A1 EP 4487402A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- state
- electrochemical element
- maintenance circuit
- maintenance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
- H01M10/48—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
- H01M10/48—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
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
-
- 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
- H02J7/875—Charging or discharging for charge maintenance, battery initiation or rejuvenation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D2045/0085—Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
-
- 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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
- H01M2200/103—Fuse
-
- 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
Definitions
- the present invention relates to a battery and an associated battery maintenance method.
- batteries are used for several applications, in particular for starting the engine or to supply critical systems in the event of failure of their main power supply. This implies that an aircraft generally includes between 1 and 4 batteries per device.
- a battery comprising a casing, the casing defining an interior space, the battery comprising a set of internal elements, the internal elements being inserted into the interior space, the set of internal elements comprising:
- the maintenance circuit being able to obtain a measurement of a parameter relating to the state of health of the at least one electrochemical element.
- the battery has one or more of the following characteristics, taken separately or according to all the technically possible combinations:
- the management system has at least two states, an operational state and a failure state, the maintenance circuit being capable of discharging the battery to a state of charge less than or equal to a threshold value when the management system is in the fault state, the threshold value being between 10% and 50%.
- the battery comprises a device for activating the maintenance circuit comprising a dry contact.
- the parameter relating to the state of health of the at least one electrochemical element is the internal resistance and/or the capacitance.
- the battery further comprises a contactor interposed between a pole of the at least one electrochemical element and an output terminal and the maintenance circuit comprises a current control unit delivered by the at least one electrochemical element, the current control unit being positioned between the contactor and a pole of the at least one electrochemical element.
- the current control unit comprises a regulating device, the regulating device being, for example, a transistor.
- the maintenance circuit also comprises an electrical protection device for the maintenance circuit.
- the protection device is a fuse.
- the description also proposes a vehicle, in particular an aircraft, comprising a battery as described above.
- the description also relates to a method for maintaining a battery comprising a casing, the casing defining an interior space, the battery comprising a set of internal elements, the internal elements being inserted into the interior space, the set of elements internal comprising:
- the maintenance circuit being suitable for obtaining a measurement of a parameter relating to the state of health of the at least one electrochemical element, the maintenance method comprising:
- FIG. 1 is a schematic representation of a vehicle comprising batteries
- FIG. 2 is a schematic representation of the elements of a battery of Figure 1.
- a vehicle 10 is shown schematically in Figure 1. More specifically, the vehicle 10 is an aircraft 10.
- An aircraft is a means of transport capable of rising and moving at altitude within the Earth's atmosphere.
- aircraft 10 is an airplane.
- the aircraft 10 is a helicopter.
- the aircraft 10 of FIG. 1 comprises two batteries 12: a first battery 14 used when starting the aircraft 10 and a second battery 16 used as an emergency power supply.
- Each of these first and second batteries 14 and 16 are similar and have the different units visible in Figure 2.
- a battery 12 comprises one or more current accumulators also called electrochemical generators, cells or elements. These elements will be denoted electrochemical elements 18 in the remainder of the description.
- An electrochemical cell 18 is an electrical generating device in which chemical energy is converted into electrical energy.
- the chemical energy comes from the electrochemically active compounds deposited on at least one face of electrodes arranged in the electrochemical element 18.
- the electrical energy is produced by electrochemical reactions during discharge of the accumulator.
- SOC state of charge of an electrochemical element 18
- SOC state of charge of an electrochemical element 18
- the SOC state of charge is expressed as a percentage of a maximum state of charge.
- the electrodes arranged in a container, are electrically connected to current output terminals 20 and 22 (respectively a positive output terminal 20 and a negative output terminal 22) which ensure electrical continuity between the electrodes and an electrical consumer to which the electrochemical element 18 is associated.
- a battery 12 can be divided into modules, each module being composed of one or more electrochemical elements 18 connected between them in series and/or in parallel.
- a battery 12 can for example comprise one or more parallel branches of electrochemical cells connected in series and/or one or more parallel branches of modules connected in series.
- the two electrochemical elements 18 have a positive pole 24 and a negative pole 26.
- the positive pole 24 is connected to the positive output terminal 20 and the negative pole 26 is connected to the negative output terminal 22.
- the electrochemical elements 18 are lithium-ion elements
- the battery 12 further comprises a unit 28 for securing the battery 12 in the event of a malfunction.
- the security unit 28 makes it possible to isolate the electrochemical elements 18 from the electronic components powered by the battery 12.
- the security unit 28 comprises a fuse 30 and a contactor 32.
- fuse 30 is connected to positive output terminal 20 while contactor 32 is connected to negative output terminal 22.
- the security unit 28 may comprise two contactors 32 instead of just one, each contactor 32 being connected to a respective output terminal 20 and 22 of the battery 12.
- the battery 12 also has other units for controlling the electrochemical elements 18.
- the battery 12 comprises a management system 34 for the electrochemical elements 18, a maintenance circuit 36 for the electrochemical elements 18 and an activation device 40 for the maintenance circuit 36.
- Such a management system 34 makes it possible in particular to organize and control the charging and discharging of the battery 12, to balance the charging and discharging of the various electrochemical elements 18 of the battery 12 with respect to each other.
- the management system 34 has at least two states, an operational state and a failure state. As its name indicates, in the operational state, the management system 34 is capable of ensuring all of its functions, whereas, in the failure state, the management system 34 is not capable of perform at least one of its functions.
- the management system 34 goes into the fault state when the management system 34 detects an anomaly with respect to the expected operation of the battery 12. For example, the management system 34 can consider that a current or Too high voltages or a faulty contactor are faults justifying entering the fault state.
- the management system 34 comprises a set of measurement sensors 42, a balancing unit 44 and a first electronic control circuit 46.
- the set of measurement sensors 42 comprises three sensors, namely: a voltage sensor 48 capable of measuring the voltage across the terminals of the electrochemical elements 18, a current sensor 50 capable of measuring the current delivered by the electrochemical elements 18 and a temperature sensor 52 capable of measuring the temperature of the electrochemical elements 18.
- the balancing unit 44 is suitable for carrying out the balancing of the electrochemical elements 18.
- the balancing unit 44 includes a set of balancing resistors not shown to maintain good readability of Figure 2.
- Each balancing resistor is associated with a respective electrochemical element 18 and has an on and off state.
- the balancing resistor In the activated state, the balancing resistor is connected to the electrochemical element 18 to discharge it while in the deactivated state, the balancing resistor is not connected to the electrochemical element 18.
- the switching of 'a state to another state is, for example, achieved by a tilting of an electronically controlled switch.
- the balancing resistors corresponding to the electrochemical elements 18 having the highest charge states are placed in the activated state to homogenize the charge states of all the electrochemical elements 18.
- the first electronic control circuit 46 is suitable for controlling the set of measurement sensors 42 and the balancing unit 44.
- the first electronic control circuit 46 is also able to control the electrochemical elements 18 and the security unit 28.
- the first electronic control circuit 46 is also able to process the measurements from the sensors.
- the first electronic control circuit 46 is an electronic circuit designed to manipulate and/or transform data represented by electronic or physical quantities in registers of the computer and/or memories into other similar data corresponding to physical data in the register memories or other types of display devices, transmission devices or storage devices.
- the first control electronic circuit 46 includes a single-core or multi-core processor (such as a central processing unit (CPU), a graphics processing unit (GPU), a microcontroller, and a digital signal processor (DSP)), programmable logic circuit (such as application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), programmable logic device (PLD), and programmable logic arrays (PLA)), a state machine, a logic gate and discrete hardware components.
- a single-core or multi-core processor such as a central processing unit (CPU), a graphics processing unit (GPU), a microcontroller, and a digital signal processor (DSP)
- programmable logic circuit such as application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), programmable logic device (PLD), and programmable logic arrays (PLA)
- ASIC application-specific integrated circuit
- FPGA field-programmable gate array
- PLD programmable logic device
- PLA programmable logic arrays
- the maintenance circuit 36 is able to obtain a measurement of a parameter relating to the state of health of the electrochemical elements 18.
- the state of health is often referred to by the abbreviation SOH which refers to the English name of “State of Health”.
- SOH The state of health SOH makes it possible to estimate the aging of the battery 12 between a new state and an end of life state, or more generally, between an initial state and a final state.
- a parameter relating to the state of health is any parameter involved in the state of health, such as, for example, the values of temperature, voltage or current of the electrochemical elements 18.
- the maintenance circuit 36 comprises a current control unit 54, a protection device 58 and a second electronic control circuit 60.
- the current control unit 54 is a current control unit delivered by the electrochemical elements 18.
- the current control unit 54 in association with the second electronic control circuit 60 and the current measurement makes it possible to regulate and control the discharge current.
- the current control unit 54 includes a resistor 55 and a current regulator 56.
- the regulation device 56 is connected on the one hand to a terminal 64 of the resistor 55 and on the other hand to the protection device 58.
- the regulating device 56 acts both as a current regulator and as a switch.
- the regulating device 56 has as such an open state and a closed state.
- the regulation device 56 is, for example, a transistor, in particular an insulated-gate field-effect transistor.
- a transistor is more often referred to as a MOSFET transistor, the acronym MOSFET referring to the corresponding English name of “Metal Oxide Semiconductor Field Effect Transistor” literally translating as “field effect transistor with metal-oxide-semiconductor structure”.
- the regulation device 56 can comprise more than one transistor, for example two transistors in series.
- the protection device 58 is an electrical protection device for the elements of the maintenance circuit 36.
- the protection device 58 is a fuse.
- the protection device 58 is in series with the current control unit 54.
- the whole of the protection device 58 and of the current control unit 54 thus forms a branch 66 in parallel with the electrochemical elements 18.
- the branch 66 extends between two ends 68 and 70, the first end 68 of the branch 66 being connected to the negative pole 26 of the electrochemical elements 18 and to the contactor 32.
- the second electronic control circuit 60 is able to implement a set of functions. These functions are maintenance functions and correspond to steps in a battery maintenance process 12.
- the second electronic control circuit 60 can be made in the same way as the first electronic control circuit 46.
- the first electronic control circuit 46 and the second electronic control circuit 60 are combined, that is to say that these electronic control circuits are produced as a single computer.
- the computer elements involved in performing the maintenance functions are part of a separate partition from the computer element(s) performing the functions of the first electronic control circuit 46, so that the maintenance functions are isolated from the functions of the first electronic control circuit 46.
- the activation device 40 of the maintenance circuit 36 is capable of activating or deactivating the maintenance circuit 36.
- the activation device 40 thus allows an operator to control the second electronic control circuit 60 from outside.
- the exterior is defined with respect to the casing 72 which the battery 12 comprises.
- the housing 72 indeed delimits an interior space 74.
- the electrochemical elements 18, the management system 34 of the electrochemical elements 18, the maintenance circuit 36 of the electrochemical elements 18 and the contactor 32 are elements inserted into the interior space 74. As such, they are internal elements of the battery 12.
- the management system 34 and the maintenance circuit 36 are thus each an on-board circuit integrated into the battery 12.
- Housing 72 is provided with positive output terminal 20 and negative output terminal 22.
- the activation device 40 comprises a dry contact 76 having ends 78 and 80 and connections 82 and 84 connected to a respective end 78 or 80 of the dry contact 76.
- a dry contact 76 is an electrical contact with no potential difference between its two terminals, unlike a resistor for example.
- the dry contact 76 can therefore be activated by an operator by connecting a terminal to the dry contact 76.
- the maintenance circuit 36 is activated whereas when the dry contact 76 is not activated, the maintenance circuit 36 is deactivated.
- Ends 78 and 80 are on case 72 of battery 12.
- the first connection 82 connects the first end 78 of the dry contact 76 to the second end 70 of the branch 66.
- the maintenance circuit 36 of FIG. 2 is able to perform several functions which are now described. An operator can perform a maintenance operation using the maintenance circuit 36.
- the operator connects to the dry contact 76 a terminal on a connection terminal present on the box 72, the terminal and the maintenance circuit 36 thus being connected by a wired connection.
- the terminal and the maintenance circuit 36 can communicate by wireless communication.
- the terminal is, for example, a tablet serving as a man-machine interface.
- the terminal thus allows the operator to control the maintenance circuit 36 and in particular its functions.
- the operator asks the maintenance circuit 36 to perform a first function corresponding to providing a discharge function for the electrochemical elements 18.
- the maintenance circuit 36 is, here, in fact capable of discharging the electrochemical elements 18 up to a state-of-charge threshold, and this even if the management system 34 is in the fault state.
- the state of charge threshold is less than or equal to a threshold value.
- the threshold value is between 10% and 50%, preferably between 20% and 30%, or even equal to 30%.
- the maintenance circuit 36 controls the balancing unit 44 to activate all the balancing resistors and thus discharge the electrochemical elements 18.
- the maintenance circuit 36 stops the activation of the balancing resistors as soon as the state of charge is less than or equal to the desired state of charge threshold.
- the second electronic control circuit 60 controls the state of the regulation device 56.
- the second electronic control circuit 60 activates the regulation device 56 to discharge the electrochemical elements 18 and opens it when the elements electrochemical cells 18 have a state of charge less than or equal to the desired state of charge threshold.
- the maintenance circuit 36 is able to determine the value of the state of charge on the basis of the measurements of the set of measurement sensors 42.
- the maintenance circuit 36 makes it possible to measure the capacity of the electrochemical elements 18. For this, the maintenance circuit 36 causes the electrochemical elements 18 to be balanced and charged to a chosen state of charge.
- Maintenance circuit 36 places contactor 32 in an open state.
- the temperature sensor 52 measures the temperature at this full state of charge.
- the second electronic control circuit 60 then controls the regulation device 56 lets the desired current flow.
- the electrochemical elements 18 then discharge to their minimum voltage.
- the current sensor 50 measures the value of the current delivered by the electrochemical elements 18.
- the second electronic control circuit 60 deduces from the current values measured over time a measurement of the capacitance.
- the second electronic control circuit 60 compares the capacitance thus measured with a reference capacitance value.
- the reference capacitance value is obtained using the measured temperature.
- This comparison makes it possible to determine the presence of a discrepancy between the capacity of the battery 12 and the capacity expected for it.
- the result of the comparison is displayed on the operator's terminal and recorded in a memory of the battery 12 forming part of one of the electronic control circuits.
- the second electronic control circuit 60 determines the state of health SOH from the ratio of the measured capacity to the capacity of the battery 12 in new or initial condition under the same measurement conditions (in particular under the same temperature).
- the capacity decreases with aging, reflecting a loss of available energy.
- the expression state of health SOH related to the capacity of the battery 12 is often used or its abbreviation SOHC which refers to the corresponding English name of “State of Health related to battery Capacity”.
- the SOHC parameter is displayed on the terminal and stored in the aforementioned memory.
- the maintenance circuit 36 makes it possible to measure the internal resistance of the electrochemical elements 18.
- the maintenance circuit 36 imposes a complete discharge on the electrochemical elements 18.
- the current sensor 50 measures the value of the current delivered by the electrochemical elements 18 and the voltage sensor 48 measures the value of the voltage across the terminals of the electrochemical elements 18.
- the second electronic control circuit 60 deduces from the measured values the value of the internal resistance of the electrochemical elements 18, this being the ratio between the voltage and the current.
- the second electronic control circuit 60 compares the internal resistance thus measured with a reference internal resistance value
- the internal resistance value is obtained using the measured temperature.
- This comparison helps to determine if the internal resistance matches the internal resistance.
- the result of the comparison is displayed on the operator's terminal and recorded in a memory of the battery 12 forming part of one of the electronic control circuits.
- the second electronic control circuit 60 determines the state of health SOH by calculating the ratio of the internal resistance thus measured by measuring the voltage and the current on the internal resistance of the battery 12 in the new or initial state in the same measurement conditions (in particular under the same temperature conditions).
- the internal resistance increases with the aging of the battery 12, reflecting a loss of power.
- the expression state of health SOH related to the internal resistance of the battery 12 is often used or its abbreviation SOHR which refers to the corresponding English name of “State of Health related to battery Resistance”.
- the SOHR parameter is displayed on the terminal and stored in the aforementioned memory.
- the maintenance circuit 36 thus makes it possible to carry out maintenance operations integrated into the battery 12. This makes it possible to avoid the use of an additional device intended to carry out these maintenance and repair operations and thus make maintenance easier.
- the maintenance circuit 36 thus makes it possible to carry out maintenance on the ground of aircraft 10 without external equipment.
- the maintenance circuit 36 makes it possible to carry out checks on the proper functioning of the battery 12, by measuring the capacity or the internal resistance of the battery 12.
- the maintenance circuit 36 makes it possible to discharge the battery 12 even if the battery 12 is in a faulty state.
- the maintenance circuit 36 can be activated by the operator via the activation device 40 and controlled by the terminal. This makes it possible to activate the maintenance circuit 36 only on the ground during the maintenance phase. The operator can activate this function via a man-machine interface.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2201720A FR3133106A1 (fr) | 2022-02-28 | 2022-02-28 | Batterie avec circuit de maintenance intégré, véhicule et procédé associés |
| PCT/EP2023/054851 WO2023161474A1 (fr) | 2022-02-28 | 2023-02-27 | Batterie avec circuit de maintenance intégré, véhicule et procédé associés |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4487402A1 true EP4487402A1 (fr) | 2025-01-08 |
Family
ID=81851222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23706630.3A Pending EP4487402A1 (fr) | 2022-02-28 | 2023-02-27 | Batterie avec circuit de maintenance intégré, véhicule et procédé associés |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250162724A1 (fr) |
| EP (1) | EP4487402A1 (fr) |
| CN (1) | CN118765455A (fr) |
| FR (1) | FR3133106A1 (fr) |
| WO (1) | WO2023161474A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010007076A1 (de) * | 2010-02-06 | 2011-08-11 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 80686 | Elektrischer Energiespeicher |
| FR2972307B1 (fr) * | 2011-03-02 | 2015-06-26 | Commissariat Energie Atomique | Batterie elementaire integrant des fonctions de gestion |
| FR3031628B1 (fr) * | 2015-01-13 | 2019-07-05 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Accumulateur electrochimique avec module electronique interne au boitier |
| FR3094841B1 (fr) * | 2019-04-05 | 2021-12-17 | Accumulateurs Fixes | Procede pour une mise au rebut ou un recyclage sans danger d’une batterie |
-
2022
- 2022-02-28 FR FR2201720A patent/FR3133106A1/fr active Pending
-
2023
- 2023-02-27 US US18/839,969 patent/US20250162724A1/en active Pending
- 2023-02-27 CN CN202380023859.1A patent/CN118765455A/zh active Pending
- 2023-02-27 WO PCT/EP2023/054851 patent/WO2023161474A1/fr not_active Ceased
- 2023-02-27 EP EP23706630.3A patent/EP4487402A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3133106A1 (fr) | 2023-09-01 |
| WO2023161474A1 (fr) | 2023-08-31 |
| CN118765455A (zh) | 2024-10-11 |
| US20250162724A1 (en) | 2025-05-22 |
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