WO2025002923A1 - Système sans fil de gestion de batterie et procédé associé - Google Patents
Système sans fil de gestion de batterie et procédé associé Download PDFInfo
- Publication number
- WO2025002923A1 WO2025002923A1 PCT/EP2024/066998 EP2024066998W WO2025002923A1 WO 2025002923 A1 WO2025002923 A1 WO 2025002923A1 EP 2024066998 W EP2024066998 W EP 2024066998W WO 2025002923 A1 WO2025002923 A1 WO 2025002923A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- value
- calculator
- time
- battery
- control device
- 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.)
- Ceased
Links
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]
-
- 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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
-
- 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
- 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
- H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
- H02J7/52—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially for charge balancing, e.g. equalisation of charge between batteries
-
- 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
- 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
- B60L2240/547—Voltage
-
- 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
- B60L2240/80—Time limits
Definitions
- TITLE Wireless battery management system and associated method
- the invention relates to the technical field of power batteries for electric or hybrid traction vehicles, and in particular to the management systems for such batteries, in particular wireless management systems.
- Electric or hybrid traction vehicles use traction batteries to store the electrical energy needed for their operation.
- Battery management systems are configured to make estimates of the calendar aging of batteries, such as estimates of capacity loss and internal resistance increase based on time since first use.
- a first method consists of integrating into the battery management system a dedicated electronic component such as a real time clock or RTC or "Real Time Clock" in English, which gives the real time. This solution generates a significant cost.
- a second method is to obtain the real time from a computer equipped with an RTC and which transmits this information to at regular intervals to the battery management system via a CAN bus or "Controller Area Network" in English.
- a CAN bus or "Controller Area Network” in English any delay in the transmission of this information to the management system can cause malfunctions.
- this solution can cause significant overconsumption of electrical energy, because it is necessary to wake up the computer equipped with the RTC to obtain the real time and because the transmission via CAN bus automatically wakes up all the computers connected to this bus.
- the invention aims to provide a battery management system capable of determining the time elapsed since a first use, which is economical in electrical energy and without using dedicated electronic components such as RTCs.
- the invention relates to a wireless battery management system comprising slave management modules coupled one-to-one to battery modules, and a master management module associated with the slave management modules.
- the master management module includes a computer configured to operate in an active mode and a sleep mode, and a controller configured to communicate wirelessly with each slave management module.
- the controller is configured to calculate a value of the elapsed time in the computer's sleep mode.
- control device is provided with a logic output to which the computer is connected, so as to allow the computer to switch from a standby mode to an active mode when a voltage level of said logic output is set to a predetermined high voltage value.
- the voltage level of the logic output is set to the predetermined high voltage value when the elapsed time value exceeds a first predetermined time value.
- the calculator and the control device are configured to communicate with each other through a serial type link.
- each battery module is configured to allow balancing of the electrical voltage across the terminals of the cells of the modules, based on a control signal from the control device when the value of the elapsed time exceeds a second predetermined time value.
- the invention relates to a battery management method comprising the steps of:
- the method comprises an additional step of controlling the computer to switch to an active mode carried out when said value of the elapsed time exceeds a first predetermined time value.
- the method comprises an additional step of updating the value of the reference time of the calculator carried out at the time of switching to an active mode of the calculator as a function of said value of the elapsed time.
- the method comprises an additional step of controlling the balancing of the voltage of at least one battery module, carried out when the value of the elapsed time exceeds a second predetermined time value.
- the invention relates to a hybrid or electric vehicle comprising a wireless system for managing battery or implementing a battery management method as described above.
- FIG 1 is a schematic view of a wireless battery management system according to one embodiment of the invention.
- FIG 2 is a flowchart of a battery management method according to one embodiment of the invention.
- Figure 1 is a schematic view of a wireless battery management system 1 according to one embodiment of the invention.
- the wireless battery management system 1 comprises slave management modules 3 coupled in a one-to-one manner to battery modules 2.
- each slave management module 3 corresponds to a single battery module 2 and each battery module 2 corresponds to a single slave management module 3.
- Each battery module 2 comprises one or more electric accumulators (not shown), the battery modules 2 being connected in series and/or in parallel to form a battery 4.
- the battery 4 constitutes a source of electrical energy capable, for example, of powering an electric motor which at least partly provides traction for a vehicle.
- the use of the invention is not limited to the traction of electric vehicles and can also be envisaged in the case of stationary applications.
- Each slave management module 3 is configured to communicate with the battery module 2 associated with it. This communication is carried out by wired means.
- the slave management modules 3 are suitable for receiving data relating to the electrical voltage and/or temperature from the associated electrical modules 2.
- Each battery module 2 is configured to allow balancing of the electrical voltage.
- the balancing of the electrical voltage is preferably done by dissipation through an electrical resistor (not shown) associated with each battery module 2, so as to balance the electrical voltages between the different battery modules 2.
- System 1 also includes a master management module
- the master management module 5 monitors the state of the battery 4 in particular in relation to the voltage and/or temperature values of each battery module 2.
- the master management module 5 comprises a computer 6 and a control device 7.
- serial type 8 link is configured to communicate with each other through a serial type 8 link.
- the control device 7 is configured to control each slave management module 3. Preferably, the control is carried out wirelessly.
- the slave management modules 3 are also suitable for transmitting control signals from the device
- control device 7 is configured to control each battery module 2 through the associated slave management module 3.
- the control device 7 comprises a computing module 7a, a memory module 7b and a wireless communication module 7c.
- the calculator 6 makes estimates of the aging of the battery 4, in particular in terms of loss of capacity and increase in internal resistance. To make these estimates, the calculator uses the time elapsed since a reference time, for example the time elapsed since a first start-up or a first use of the system 1. This reference time is known and stored in a memory of the calculator 6. The reference time is periodically updated to take into account the passage of calendar time.
- Battery 4 provides the electrical energy supply to system 1.
- the computer 6 is configured to operate in an active mode and in a standby mode.
- the active mode is a mode that consumes electrical energy in which the computer 6 is activated.
- the standby mode is a mode that consumes little electrical energy in which the computer 6 is deactivated.
- the computer 6 is configured to switch from an active mode to a standby mode when it receives an instruction from a high-level control unit (not referenced).
- the calculator 6 comprises a stopwatch 6a.
- the stopwatch 6a measures the passage of calendar time and the calculator 6 updates the reference time according to the time value measured by the stopwatch 6a.
- the periodicity of the update in an active mode of the calculator 6 has a predetermined value and is for example equal to one minute.
- the stopwatch 6a When the calculator 6 is operating in a sleep mode, the stopwatch 6a is deactivated and cannot be used for updating the reference time.
- the control device 7 is configured to calculate a value of the time elapsed since the computer 6 went into standby mode.
- the calculation module 7a is adapted to determine a current time value.
- the calculation module 7a increments a counter (or “timestamp” in English), for example by increasing it by 1 every millisecond.
- the control device 7 is provided with a logic output 9 to which the computer 6 is connected, so as to allow the computer 6 to switch from a standby mode to an active mode when a voltage level of the logic output is set to a predetermined high voltage value.
- the control device 7 is configured to set the voltage level of the logic output 9 to the predetermined high voltage value when the value of the elapsed time exceeds a first predetermined time value.
- each battery module 2 is configured to allow balancing of the electrical voltage.
- the control device 7 is configured to control a balancing of the electrical voltage of the battery modules 2 by a control signal emitted when the value of the elapsed time exceeds a second predetermined time value.
- the first time value may take a value between 6 a.m. and 8 a.m.
- the second predetermined time value is less than the first.
- the second predetermined time value may take a value between 2 and 4 hours. However, it remains possible for the second predetermined time value to be equal to the first.
- FIG. 2 is a flowchart of a battery management method according to one embodiment of the invention.
- the method begins with a preliminary step 10 of detecting an instruction to switch to standby mode of a computer 6 of a wireless system 1 for managing a battery 4.
- the calculator 6 transmits to the device 7 the value of the reference time corresponding to the moment of switching to a standby mode (step 1 1 ).
- the method continues with a step 12 of storing the value of the reference time in the memory module 7b of the control device 7.
- the calculation module 7a then calculates a value of the time elapsed since the computer 6 went into standby mode. The calculation is carried out according to the difference between a current time value determined by the calculation module 7a and the value of the time of reference available from the memory module 7b (step 13).
- the reference time value may come from a real-time clock connected to the control device 7.
- the method continues with a step 13 of controlling the balancing of the voltage of at least one battery module 2.
- the balancing control step 13 is carried out when the value of the elapsed time exceeds a second predetermined time value.
- the control device 7 sets the voltage level of the logic output 9 to the predetermined high voltage value when the value of the elapsed time exceeds a first predetermined time value, so as to cause the computer 6 to switch to an active mode (step 14).
- the computer 6 performs an update of the value of the reference time according to the value of the elapsed time.
- the value of the reference time is updated by adding the value of the reference time previously stored in a memory of the computer 6 and the value of the elapsed time calculated by the device 7.
- the update step 15 is carried out after the computer 6 has switched to an active mode, also called wake-up, but that it is not necessary for this wake-up to be controlled by the device 7.
- the update step 15 it is possible to carry out the update step 15 after a wake-up of the computer 6 controlled by a high-level control unit following a start-up carried out by a user.
- the method does not include a balancing control step 13 and the control step 14 for switching the computer to an active mode is carried out directly after the storage step 12.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP24732547.5A EP4731470A1 (fr) | 2023-06-22 | 2024-06-18 | Système sans fil de gestion de batterie et procédé associé |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2306484 | 2023-06-22 | ||
| FR2306484A FR3150156A1 (fr) | 2023-06-22 | 2023-06-22 | Système sans fil de gestion de batterie et procédé associé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025002923A1 true WO2025002923A1 (fr) | 2025-01-02 |
Family
ID=87974429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/066998 Ceased WO2025002923A1 (fr) | 2023-06-22 | 2024-06-18 | Système sans fil de gestion de batterie et procédé associé |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4731470A1 (fr) |
| FR (1) | FR3150156A1 (fr) |
| WO (1) | WO2025002923A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10748353B2 (en) * | 2011-03-31 | 2020-08-18 | United Parcel Service Of America, Inc. | Segmenting operational data |
| US20210234209A1 (en) * | 2020-01-27 | 2021-07-29 | GM Global Technology Operations LLC | Two-level method for thermal runaway detection |
| JP2021141720A (ja) * | 2020-03-05 | 2021-09-16 | 住友電気工業株式会社 | 電池管理システム、電池検出ユニット、電池管理ユニット、モード移行方法、電池システム、及び車両 |
| WO2023070273A1 (fr) * | 2021-10-25 | 2023-05-04 | Visteon Global Technologies, Inc. | Système et procédé de surveillance d'une batterie rechargeable |
-
2023
- 2023-06-22 FR FR2306484A patent/FR3150156A1/fr active Pending
-
2024
- 2024-06-18 WO PCT/EP2024/066998 patent/WO2025002923A1/fr not_active Ceased
- 2024-06-18 EP EP24732547.5A patent/EP4731470A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10748353B2 (en) * | 2011-03-31 | 2020-08-18 | United Parcel Service Of America, Inc. | Segmenting operational data |
| US20210234209A1 (en) * | 2020-01-27 | 2021-07-29 | GM Global Technology Operations LLC | Two-level method for thermal runaway detection |
| JP2021141720A (ja) * | 2020-03-05 | 2021-09-16 | 住友電気工業株式会社 | 電池管理システム、電池検出ユニット、電池管理ユニット、モード移行方法、電池システム、及び車両 |
| WO2023070273A1 (fr) * | 2021-10-25 | 2023-05-04 | Visteon Global Technologies, Inc. | Système et procédé de surveillance d'une batterie rechargeable |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3150156A1 (fr) | 2024-12-27 |
| EP4731470A1 (fr) | 2026-04-29 |
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