WO2019024787A1 - Procédé et dispositif de commande de décharge pour batterie d'alimentation, dispositif de commande et automobile - Google Patents

Procédé et dispositif de commande de décharge pour batterie d'alimentation, dispositif de commande et automobile Download PDF

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Publication number
WO2019024787A1
WO2019024787A1 PCT/CN2018/097473 CN2018097473W WO2019024787A1 WO 2019024787 A1 WO2019024787 A1 WO 2019024787A1 CN 2018097473 W CN2018097473 W CN 2018097473W WO 2019024787 A1 WO2019024787 A1 WO 2019024787A1
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WIPO (PCT)
Prior art keywords
power battery
state
charge
power
value
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PCT/CN2018/097473
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English (en)
Chinese (zh)
Inventor
唐磊
代康伟
张骞慧
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北京新能源汽车股份有限公司
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Publication of WO2019024787A1 publication Critical patent/WO2019024787A1/fr

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    • 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
    • H01M10/44—Methods for charging or discharging
    • 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 disclosure relates to the field of battery management technologies, and in particular, to a discharge control method, device, controller, and automobile for a power battery.
  • Embodiments of the present disclosure provide a discharge control method for a power battery, including:
  • the power battery When the power battery enters the discharge state from the initial state, the power battery is discharged to a state of charge to a preset reference value, and the preset reference value indicates that the power battery starts to discharge from the state of charge to 100%.
  • the power battery When the state of charge of the power battery reaches the preset reference value, the power battery is controlled to discharge until it is completely discharged.
  • the step of controlling the power battery to discharge to a charged state to reach a preset reference value includes:
  • the original ampere-hour integral formula is adopted. Estimating a state of charge of the power battery, and detecting whether a minimum voltage of the cell of the power battery is less than a discharge cutoff voltage according to a second preset period, wherein SOC 0 represents a charge of the power battery when in the initial state
  • SOC 0 represents a charge of the power battery when in the initial state
  • ⁇ represents the charging and discharging efficiency of the power battery
  • C represents the rated capacity of the power battery
  • I represents the current of the power battery
  • the method before the step of controlling the power battery to discharge until it is completely discharged, the method further includes:
  • the power correspondence table corrects the value of the state of charge of the power battery.
  • the charging state of the power battery is corrected according to the obtained maximum allowable discharge power of the power battery and the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery.
  • the steps of the value include:
  • the state of charge of the power battery is estimated until the state of charge of the power battery reaches the correction value, wherein SOC Y represents the preset reference value, and k is a constant greater than one.
  • the step of controlling the power battery to discharge until it is completely discharged includes:
  • the accumulated value of the amount of power discharged by the power battery is cleared, and the value of the state of charge of the power battery is decreased by first. a predetermined amount, obtaining a target value of a state of charge of the power battery, and searching for a power corresponding to the target value from a correspondence table between a predetermined value of the state of charge and a maximum allowable discharge power of the power battery The maximum allowable discharge power of the battery, and adjust the maximum allowable discharge power of the power battery at this moment to the maximum allowable discharge power of the power battery corresponding to the target value;
  • the value of the state of charge of the power battery is decreased by a second predetermined amount until the state of charge of the power battery The value reaches zero.
  • the preset reference value is determined according to power characteristics and capacity characteristics of the power battery.
  • the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery includes a correspondence table between the state of charge at different temperature ranges and the maximum allowable discharge power of the power battery;
  • An embodiment of the present disclosure further provides a discharge control device for a power battery, including:
  • a first discharge control module configured to control the power battery to discharge to a preset state when the power battery enters a discharge state from an initial state, wherein the preset reference value indicates that the power battery is from a state of charge The value of the state of charge after 100% of the power consumption required to satisfy the vehicle is started to be released;
  • the second discharge control module is configured to control the power battery to discharge until it is completely discharged when the state of charge of the power battery reaches the preset reference value.
  • the first discharge control module includes:
  • a first detecting unit configured to adopt an original ampere-hour integral formula according to the first preset period Estimating a state of charge of the power battery, and detecting whether a minimum voltage of the cell of the power battery is less than a discharge cutoff voltage according to a second preset period, wherein SOC 0 represents a charge of the power battery when in the initial state
  • SOC 0 represents a charge of the power battery when in the initial state
  • ⁇ represents the charging and discharging efficiency of the power battery
  • C represents the rated capacity of the power battery
  • I represents the current of the power battery
  • a first processing unit configured to reduce the maximum allowable discharge power of the power battery to the Nth preset value when the Nth lowest voltage of the power battery is detected to be lower than the discharge cutoff voltage, and according to the first
  • the Nth hour integral formula is used for the preset period Estimating the state of charge of the power battery until the state of charge of the power battery reaches the preset reference value, wherein SOC N indicates that the lowest voltage of the cell of the power battery is detected to be less than the discharge cutoff at the Nth time At the time of voltage, the value of the state of charge of the power battery, N is an integer greater than 0, and k N is a constant greater than one.
  • the device further includes:
  • a correction module configured to: when the power battery is discharged from the initial state to a state in which the state of charge reaches the preset reference value, if it is detected that a minimum voltage of the power battery is less than a discharge cutoff voltage, When the state of charge of the power battery reaches the preset reference value, the maximum allowable discharge power of the power battery at the moment is obtained, and according to the obtained maximum allowable discharge power of the power battery, and the value of the predetermined state of charge and The correspondence table of the maximum allowable discharge power of the power battery is used to correct the value of the state of charge of the power battery.
  • the correction module comprises:
  • a look-up unit for finding a value of a state of charge corresponding to the maximum allowable discharge power of the obtained power battery from a correspondence table between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery, and a correction value as a state of charge of the power battery;
  • a second processing unit configured to control the power battery to continue discharging from the state of charge to the preset standard value, and adopt a preset ampere-hour integral formula according to the first preset period
  • the state of charge of the power battery is estimated until the state of charge of the power battery reaches the correction value, wherein SOC Y represents the preset reference value, and k is a constant greater than one.
  • the second discharge control module comprises:
  • a second detecting unit configured to detect, according to a second preset period, whether a minimum voltage of the power battery is less than a discharge cutoff voltage, and detecting whether the power discharged by the power battery reaches an integral multiple of a preset standard value
  • a third processing unit configured to clear the accumulated value of the amount of power discharged by the power battery every time the minimum voltage of the power battery is detected to be less than the discharge cutoff voltage, and charge the power battery
  • the value of the state is decreased by the first preset amount, the target value of the state of charge of the power battery is obtained, and the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery is searched.
  • a maximum allowable discharge power of the power battery corresponding to the target value and adjusting a maximum allowable discharge power of the power battery at the moment to a maximum allowable discharge power of the power battery corresponding to the target value;
  • a fourth processing unit configured to reduce a value of a state of charge of the power battery by a second predetermined amount each time the amount of power discharged by the power battery reaches an integral multiple of the preset standard value; The value of the state of charge of the power battery reaches zero.
  • the preset reference value is determined according to power characteristics and capacity characteristics of the power battery.
  • the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery includes a correspondence table between the state of charge at different temperature ranges and the maximum allowable discharge power of the power battery;
  • the lookup unit is specifically configured to:
  • Embodiments of the present disclosure also provide a controller including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor reading a program in the memory The steps in the discharge control method of the power battery as described above are performed.
  • Embodiments of the present disclosure also provide an automobile including the controller described above.
  • FIG. 1 is a flow chart showing a discharge control method of a power battery according to an embodiment of the present disclosure
  • FIG. 2 is a flow chart showing a specific implementation of a discharge control method for a power battery according to an embodiment of the present disclosure
  • FIG. 3 is a block diagram showing the structure of a discharge control device for a power battery according to an embodiment of the present disclosure
  • FIG. 4 is a block diagram showing the structure of a discharge control device for a power battery according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a discharge control method for a power battery, as shown in FIG. 1, the method includes:
  • Step 101 When the power battery enters the discharge state from the initial state, the power battery is controlled to discharge to a state of charge to reach a preset reference value.
  • the preset reference value indicates a value of a state of charge of the power battery after the power state is 100% and the power state required to satisfy the vehicle is released. Further, the preset reference value is determined according to power characteristics and capacity characteristics of the power battery.
  • step 101 is specifically: acquiring an ambient temperature at which the power battery is located, and controlling the power battery to discharge to a state of charge to reach a pre-corresponding to the ambient temperature when the power battery enters a discharge state from an initial state. Set the reference value.
  • the initial state is a state in which the value of the state of charge of the power battery is greater than the state of the preset reference. That is, the power battery can start discharging from any value of the state of the charging state that is greater than a preset reference value.
  • the step of controlling the power battery to discharge to a charged state to reach a preset reference value includes:
  • the original ampere-hour integral formula is adopted. Estimating a state of charge of the power battery, and detecting whether a minimum voltage of the cell of the power battery is less than a discharge cutoff voltage according to a second preset period, wherein SOC 0 represents a charge of the power battery when in the initial state
  • SOC 0 represents a charge of the power battery when in the initial state
  • ⁇ represents the charging and discharging efficiency of the power battery
  • C represents the rated capacity of the power battery
  • I represents the current of the power battery
  • the original ampere-hour integral formula when the power battery starts to discharge from the initial state, the original ampere-hour integral formula is used to periodically estimate the state of charge of the power battery, and periodically detect whether the lowest voltage of the power battery is less than the discharge cut-off. Voltage. When it is detected that the minimum voltage of the power battery is less than the discharge cut-off voltage, the original ampere-hour integral formula is used to periodically estimate the state of charge of the power battery, and the "acceleration ampere-hour integral formula" is used for periodic estimation. At the same time reduce the maximum allowable discharge power of the power battery.
  • the specific parameters in the "acceleration ampere-hour integral formula" used are different each time the minimum voltage of the cell of the power battery is detected to be less than the discharge cut-off voltage. For example, when the lowest voltage of the cell of the power battery is detected for the first time is less than the discharge cutoff voltage, the formula for estimating the state of charge is the first ampere-hour integral formula. When the second lowest voltage of the power battery is detected to be less than the discharge cut-off voltage, the first ampere-hour integral formula is stopped for estimation, and the second ampere-hour integral formula is adopted. Make an estimate.
  • the amount of decrease in the maximum allowable discharge power of the power battery may be different each time the minimum voltage of the cell of the power battery is detected to be less than the discharge cutoff voltage.
  • the process of controlling the power battery to discharge to a charged state to reach a preset reference value is as follows:
  • the original ampere-hour integral formula is adopted.
  • the state of charge of the power battery is estimated, and whether the lowest cell voltage of the power battery is less than the discharge cutoff voltage is detected according to a second preset period.
  • the maximum allowable discharge power of the power battery is lowered by X1
  • the original state of charge integral is used to estimate the state of charge of the power battery.
  • the maximum allowable discharge power of the power battery will be decreased by X2, and the first hourly integral formula is used to estimate the power battery.
  • the state of charge, but the second ampere-hour integral formula Estimating the state of charge of the power battery... The discharge is continued in accordance with the above process until the state of charge of the power battery reaches a preset reference value.
  • the first preset period and the second preset period may be calibrated according to actual conditions.
  • T 1 is the second predetermined period
  • T 2 is the second predetermined period
  • the first single minimum voltage is detected battery voltage is less than the discharge cutoff
  • the second period of T 2 arrives, it is just within the second period of T 1 , then the first ampere-hour integral formula is used.
  • SOC 1 can directly adopt the state of charge estimated by the original integral formula when the first cycle of T 1 arrives. Since the time of the first preset period and the second preset period are both short and are in the millisecond level, even if the above situation occurs, the estimation of the state of charge does not cause a large error.
  • the embodiment of the present disclosure reaches the preset reference value when the power battery is discharged from the initial state to the state of charge. In the process, only the ampere-time integral method is used to periodically estimate the state of charge of the power battery, and the state of charge of the power battery during this discharge phase can be accurately estimated.
  • Step 102 When the state of charge of the power battery reaches the preset reference value, the power battery is controlled to discharge until it is completely discharged.
  • the lowest voltage of the power battery may be less than the discharge cutoff voltage.
  • the minimum voltage of the power battery is raised, thereby no longer being smaller than the discharge cutoff voltage, thereby eliminating the power battery. Overdraft situation.
  • the power battery may be discharged to a preset reference value, and the remaining battery power has a certain deviation from the preset reference value. Therefore, in order to calibrate the deviation caused by the above situation, before step 102, the method further includes:
  • the power correspondence table corrects the value of the state of charge of the power battery.
  • a correspondence table between the value of the state of charge of the power battery and the maximum allowable discharge power of the power battery is determined in advance, so that the process of discharging the power battery from the initial state to the state of charge reaches a preset reference value.
  • the state of charge can be calibrated according to the correspondence table.
  • SOP 0 is generally the minimum required power for the entire vehicle.
  • Steps including:
  • the state of charge of the power battery is estimated until the state of charge of the power battery reaches the correction value, wherein SOC Y represents the preset reference value, and k is a constant greater than one.
  • the power battery when the power battery is discharged from the initial state to the state where the state of charge reaches the preset reference value, when the minimum voltage of the power battery is lower than the discharge cutoff voltage, the power battery can be discharged to the state of charge to reach the preset state.
  • the theoretical value of the state of charge of the power battery at this time is obtained by looking up the table, and then the power battery is controlled to continue to discharge until the state of charge reaches the theoretical value.
  • the correspondence table between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery includes a correspondence table between the state of charge at different temperature ranges and the maximum allowable discharge power of the power battery; In the correspondence table between the determined value of the state of charge and the maximum allowable discharge power of the power battery, the value of the state of charge corresponding to the maximum allowable discharge power of the power battery is found, and is used as the charge of the power battery.
  • the steps of correcting the status including:
  • step 102 includes:
  • the accumulated value of the amount of power discharged by the power battery is cleared, and the value of the state of charge of the power battery is decreased by first. a predetermined amount, obtaining a target value of a state of charge of the power battery, and searching for a power corresponding to the target value from a correspondence table between a predetermined value of the state of charge and a maximum allowable discharge power of the power battery The maximum allowable discharge power of the battery, and adjust the maximum allowable discharge power of the power battery at this moment to the maximum allowable discharge power of the power battery corresponding to the target value;
  • the value of the state of charge of the power battery is decreased by a second predetermined amount until the state of charge of the power battery The value reaches zero.
  • the state of charge of the power battery is reduced by a first predetermined amount, and the accumulated value of the amount of power discharged by the power battery is cleared (ie, the calculation is restarted) The amount of discharge), and before the accumulated value of the amount of power discharged from the power battery is not cleared, the state of charge of the power battery is decreased by the second predetermined amount as long as the discharged amount reaches the preset standard value.
  • the first preset amount and the second preset amount may be calibrated according to actual conditions.
  • the preset standard value is ⁇ x
  • the power discharged by the power battery has not reached ⁇ x
  • the cutoff voltage reduces the state of charge of the power battery by 1% and restarts the calculation of the battery discharge.
  • the power battery is sequentially turned on as long as it is detected that the recalculated power battery discharge amount reaches ⁇ x, 2 ⁇ x, 3 ⁇ x, ...
  • the state of charge is reduced by 1%.
  • the maximum allowable discharge power of the current power battery is required whenever the minimum voltage of the power battery is lower than the discharge cutoff voltage.
  • the calibration is performed, that is, according to the correspondence between the value of the state of charge of the power battery at that time and the value of the predetermined state of charge and the maximum allowable discharge power of the power battery.
  • the correspondence table between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery includes a correspondence table between the state of charge at different temperature ranges and the maximum allowable discharge power of the power battery;
  • the steps of finding the maximum allowable discharge power of the power battery corresponding to the target value include:
  • the discharge process of the power battery is mainly divided into two stages: the process from the initial state discharge to the state of charge reaching the preset reference value is the first stage, and the state of charge is preset.
  • the process in which the reference value begins to discharge until the state of charge is zero is the second stage.
  • the embodiment of the present disclosure continuously estimates the state of charge of the power battery, thereby providing data support for evaluating the remaining battery life of the electric vehicle, thereby ensuring normal driving of the vehicle.
  • the power battery when the minimum voltage of the power battery is lower than the discharge cut-off voltage, the power battery is over-discharged.
  • the power battery during the entire discharge process of the power battery, by periodically detecting whether the minimum voltage of the single cell of the power battery is less than the discharge cutoff voltage, the power battery can be prevented from being over-discharged, thereby prolonging the service life.
  • the preset reference value Xn% of the SOC is selected according to the capacity performance and the power performance of the power battery in each temperature range, that is, the SOC-100% discharge to the SOC-Xn%, Meet the demand of the whole vehicle; SOC-Xn% discharge to SOC-0%, can release the remaining power of the battery pack, fully utilize the power battery capacity, and also accurately estimate the SOC through the hourly integration method, and this
  • the discharge control method of the power battery of the disclosed embodiment has a strong adaptability to the consistency of the battery.
  • An embodiment of the present disclosure further provides a discharge control device for a power battery.
  • the discharge control device 300 of the power battery includes:
  • the first discharge control module 301 is configured to control the power battery to discharge to a preset state when the power battery enters a discharge state from an initial state, where the preset reference value indicates that the power battery is charged
  • the value of the state of charge after the state is 100% to start discharging the power required by the vehicle;
  • the second discharge control module 303 is configured to control the power battery to discharge until it is completely discharged when the state of charge of the power battery reaches the preset reference value.
  • the first discharge control module 301 includes:
  • the first detecting unit 3011 is configured to adopt an original ampere-hour integral formula according to the first preset period. Estimating a state of charge of the power battery, and detecting whether a minimum voltage of the cell of the power battery is less than a discharge cutoff voltage according to a second preset period, wherein SOC 0 represents a charge of the power battery when in the initial state
  • SOC 0 represents a charge of the power battery when in the initial state
  • the value of the electrical state, ⁇ represents the charging and discharging efficiency of the power battery, C represents the rated capacity of the power battery, and I represents the current of the power battery;
  • the first processing unit 3012 is configured to: when the Nth lowest voltage of the power battery is detected to be lower than the discharge cutoff voltage, reduce the maximum allowable discharge power of the power battery to the Nth preset value, and according to the The Nth hour integral formula is used for a preset period Dt estimating the state of charge of the power battery until the state of charge of the power battery reaches the preset reference value, wherein SOC N indicates that the lowest voltage of the cell of the power battery detected by the Nth time is less than discharge At the time of the cutoff voltage, the value of the state of charge of the power battery, N is an integer greater than 0, and k N is a constant greater than one.
  • the apparatus further includes:
  • a correction module 302 configured to: when the power battery is discharged from the initial state to a state in which the state of charge reaches the preset reference value, if it is detected that a minimum voltage of the power battery is less than a discharge cutoff voltage, When the state of charge of the power battery reaches the preset reference value, the maximum allowable discharge power of the power battery at the moment is obtained, and according to the obtained maximum allowable discharge power of the power battery, and the value of the predetermined state of charge The value of the state of charge of the power battery is corrected by a correspondence table with the maximum allowable discharge power of the power battery.
  • the modification module 302 includes:
  • the look-up table unit 3021 is configured to search for a value of a state of charge corresponding to the obtained maximum allowable discharge power of the power battery from a correspondence table between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery. And as a correction value of the state of charge of the power battery;
  • a second processing unit 3022 configured to control the power battery to continue discharging from the state of charge to the preset standard value, and adopt a preset ampere-hour integral formula according to the first preset period
  • the state of charge of the power battery is estimated until the state of charge of the power battery reaches the correction value, wherein SOC Y represents the preset reference value, and k is a constant greater than one.
  • the second discharge control module 303 includes:
  • the second detecting unit 3031 is configured to detect, according to the second preset period, whether the lowest voltage of the power battery is less than a discharge cutoff voltage, and detect whether the power discharged by the power battery reaches an integral multiple of a preset standard value;
  • the third processing unit 3032 is configured to clear the accumulated value of the amount of power discharged by the power battery every time the minimum voltage of the power battery is detected to be less than the discharge cutoff voltage, and the charge of the power battery
  • the value of the electrical state is decreased by a first predetermined amount, the target value of the state of charge of the power battery is obtained, and from the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery, Finding a maximum allowable discharge power of the power battery corresponding to the target value, and adjusting a maximum allowable discharge power of the power battery at the moment to a maximum allowable discharge power of the power battery corresponding to the target value;
  • the fourth processing unit 3033 is configured to reduce the value of the state of charge of the power battery by a second predetermined amount each time the amount of power discharged by the power battery reaches an integral multiple of the preset standard value. Until the value of the state of charge of the power battery reaches zero.
  • the preset reference value is determined according to power characteristics and capacity characteristics of the power battery.
  • the correspondence between the value of the predetermined state of charge and the maximum allowable discharge power of the power battery includes a correspondence table between the state of charge at different temperature ranges and the maximum allowable discharge power of the power battery;
  • the look-up table unit 3021 is specifically configured to:
  • the embodiment of the present disclosure can control the power battery to discharge from the initial state to the state of charge to reach a preset reference value, thereby satisfying the power demand of the entire vehicle, and when the state of charge of the power battery reaches a preset reference value. It is also possible to further control the power battery to continue to discharge until all the remaining power is discharged, so as to be used by the automobile. Therefore, in the embodiments of the present disclosure, the power supply capability of the power battery can be fully utilized, thereby solving the problem that the power battery in the related art may be partially uncharged and cannot be used, thereby causing waste of power.
  • Embodiments of the present disclosure also provide a controller including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor reading a program in the memory The steps in the discharge control method of the power battery as described above are performed.
  • Embodiments of the present disclosure also provide an automobile including the controller described above.

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé et un dispositif de commande de décharge pour une batterie d'alimentation, un dispositif de commande et une automobile. Le procédé de commande de décharge pour une batterie d'alimentation consiste à : lorsqu'une batterie d'alimentation entre dans un état de décharge à partir d'un état initial, amener la batterie d'alimentation à se décharger jusqu'à ce qu'un état de charge de celle-ci atteigne une valeur de référence prédéfinie, la valeur de référence prédéfinie indiquant un état de charge après que la batterie d'alimentation a déchargé une quantité donnée d'électricité requise pour une automobile à partir d'un état de charge de 100 % <u>;</u>, et lorsque l'état de charge de la batterie d'alimentation atteint la valeur de référence prédéfinie, amener la batterie d'alimentation à se décharger jusqu'à ce que toute l'électricité ait été déchargée.
PCT/CN2018/097473 2017-07-31 2018-07-27 Procédé et dispositif de commande de décharge pour batterie d'alimentation, dispositif de commande et automobile WO2019024787A1 (fr)

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CN201710640824.9A CN107482269B (zh) 2017-07-31 2017-07-31 一种动力电池的放电控制方法、装置、控制器及汽车

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CN109446584B (zh) * 2018-09-30 2023-06-09 桑顿新能源科技(长沙)有限公司 一种电池管理系统对电芯过放保护的sop估算方法
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CN112240987A (zh) * 2019-12-06 2021-01-19 北京新能源汽车技术创新中心有限公司 功率测试方法、系统、计算机设备和存储介质
CN111446514A (zh) * 2020-03-17 2020-07-24 上海理工大学 伴随电池寿命衰减合理调整锂电池放电截止电压的方法
CN113442786B (zh) * 2020-03-27 2023-11-14 北京新能源汽车股份有限公司 一种动力电池放电的控制方法、装置及汽车
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