公开(公告)号：WO2010081427A1

公开(公告)日：2010-07-22

申请号：PCT/CN2010/070217

申请日：2010-01-15

Applicant: BYD COMPANY LIMITED ,  DENG, Linwang ,  WU, Xuejian ,  ZHANG, Jianhua

Inventor： DENG, Linwang ,  WU, Xuejian ,  ZHANG, Jianhua

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H02J7/045 ,  H02J7/047 ,  H02J2007/005

Abstract: A battery managing device, a method of using the same and a charging management method of a battery pack. The battery managing device comprises a single-chip (25) for determining a charging voltage and a charging current according to a remaining capacity of the battery pack and controlling a charging device coupled to the battery managing device to charge the battery pack with the charging voltage and the charging current determined by the single-chip (25).

Abstract translation: 电池管理装置，其使用方法和电池组的充电管理方法。 电池管理装置包括用于根据电池组的剩余容量来确定充电电压和充电电流的单芯片（25），并控制耦合到电池管理装置的充电装置以对充电电压进行充电 和由单片（25）确定的充电电流。

公开(公告)号：WO2010124546A1

公开(公告)日：2010-11-04

申请号：PCT/CN2010/071331

申请日：2010-03-25

Applicant: BYD COMPANY LIMITED ,  LUO, Hongbin ,  LIAO, Yunhao ,  ZHANG, Zifeng ,  WANG, Yinghui ,  DENG, Linwang ,  CHEN, Donghong ,  YIN, Shaowen ,  TANG, Xiaohua ,  XU, Juan

Inventor： LUO, Hongbin ,  LIAO, Yunhao ,  ZHANG, Zifeng ,  WANG, Yinghui ,  DENG, Linwang ,  CHEN, Donghong ,  YIN, Shaowen ,  TANG, Xiaohua ,  XU, Juan

IPC: H02J3/32

CPC classification number: H02J3/32 ,  Y10T307/516

Abstract: A battery-based power station for balancing the load of a power grid comprises at least a battery array (10); a bi-directional inverter unit (20) configured to charge the battery array (10) by the power grid and provide power supply from the battery array (10) to the power grid respectively; and a monitoring-and-controlling unit (30) configured to monitor the frequency and the phase of the power grid to control whether to charge the battery array (10) by the power grid or provide power supply from the battery array (10) to the power grid, whereby the load of the power grid is balanced. The battery-based power station can balance the load of the power grid effectively.

Abstract translation: 用于平衡电力负载的基于电池的电站至少包括电池阵列（10）; 双向逆变器单元（20），被配置为通过所述电网对所述电池阵列（10）进行充电并且分别从所述电池阵列（10）向所述电网提供电力供应; 以及监视和控制单元（30），其被配置为监视电网的频率和相位，以控制是否通过电网对电池阵列（10）充电，或者从电池阵列（10）提供电源到 电网，从而使电网的负载平衡。 基于电池的电站可以有效平衡电网的负载。

公开(公告)号：WO2011120415A1

公开(公告)日：2011-10-06

申请号：PCT/CN2011/072227

申请日：2011-03-28

Applicant: BYD COMPANY LIMITED ,  DENG, Linwang ,  ZENG, Yu ,  DENG, Yaming

Inventor： DENG, Linwang ,  ZENG, Yu ,  DENG, Yaming

IPC: H01M10/48 ,  H02J7/00

CPC classification number: H02J7/0014 ,  H01M10/441 ,  H01M10/482 ,  H01M2010/4271 ,  Y10T307/653

Abstract: A parallel device for a battery module and a controlling method thereof. The battery module includes a plurality of battery packs. The parallel device for the battery module includes: a plurality of switching units each comprising a first switch and a load connected in series and each connected with a corresponding one of battery packs in series to form a branch, wherein the branches formed of the plurality of switching units and the plurality of battery packs are connected to each other in parallel; and a controlling module (1) connected to the battery module and collecting a voltage of each battery pack, in order to calculate a voltage difference between voltages of any two of the battery packs, to compare the voltage difference with a first voltage reference to obtain a first voltage comparison, and to control at least one of the first switches corresponding to the any two of the battery packs based on the first voltage comparison. The parallel device for the battery module and the controlling method thereof can effectively avoid a big current impact when the battery packs are connected to each other in parallel, thereby prolonging the lives of the battery packs.

Abstract translation: 一种电池模块的并联装置及其控制方法。 电池模块包括多个电池组。 用于电池模块的并联装置包括：多个开关单元，每个开关单元包括串联连接的第一开关和负载，并且各自与串联的相应的一个电池组串联以形成分支，其中由多个 开关单元和多个电池组并联连接; 以及连接到电池模块并且收集每个电池组的电压的控制模块（1），以便计算任何两个电池组的电压之间的电压差，以将电压差与第一参考电压进行比较，以获得 第一电压比较，并且基于第一电压比较来控制对应于任何两个电池组的至少一个第一开关。 电池模块的并联装置及其控制方法可以在电池组彼此并联连接时有效地避免大的电流冲击，从而延长电池组的寿命。

公开(公告)号：WO2010135937A1

公开(公告)日：2010-12-02

申请号：PCT/CN2010/071928

申请日：2010-04-20

Applicant: BYD COMPANY LIMITED ,  LUO, Hongbin ,  LIAO, Yunhao ,  ZHANG, Zifeng ,  WANG, Yinghui ,  DENG, Linwang ,  YIN, Shaowen ,  CHEN, Donghong ,  TANG, Xiaohua ,  XU, Juan

Inventor： LUO, Hongbin ,  LIAO, Yunhao ,  ZHANG, Zifeng ,  WANG, Yinghui ,  DENG, Linwang ,  YIN, Shaowen ,  CHEN, Donghong ,  TANG, Xiaohua ,  XU, Juan

IPC: H02J3/28 ,  H02J3/32

CPC classification number: H02J3/32 ,  Y10T307/505 ,  Y10T307/527

Abstract: An energy storage system for balancing the load of a power grid (6) comprises: a controller (3), a plurality of energy storage tanks (1) connected in parallel, and a plurality of controllable switches (2) connected to the plurality of energy storage tanks (1) respectively, in which the controller (3) is configured to detect a frequency and a phase of the power grid (6) and thereby to control the controllable switches (2) to charge the energy storage tanks (1) using the power from the power grid (6) or to input the power from the energy storage tanks (1) to the power grid (6) in accordance with the frequency and the phase of the power grid (6) so as to balance the load of the power grid (6). The energy storage system may balance the load of the power grid (6) so that the power consuming demand can be satisfied during the peak time.

Abstract translation: 一种用于平衡电网（6）的负载的能量存储系统包括：控制器（3），并联连接的多个能量储存箱（1）和多个可控开关（2），其连接到所述多个 能量储存箱（1），其中控制器（3）被配置为检测电网（6）的频率和相位，从而控制可控开关（2）对能量储存箱（1）充电， 使用来自电网（6）的电力，或者根据电网（6）的频率和相位将能量从能量储存箱（1）输入到电网（6），以平衡 电网负载（6）。 能量存储系统可以平衡电网（6）的负载，使得在高峰时间可以满足功耗需求。

公开(公告)号：EP4535601A1

公开(公告)日：2025-04-09

申请号：EP23814682.3

申请日：2023-03-06

Applicant: BYD Company Limited

Inventor： XIONG, Shi ,  FENG, Tianyu ,  DENG, Linwang

IPC: H02J7/00 ,  H01M10/44 ,  B60L58/12

Abstract: A battery circuit (100). A positive electrode of a first battery pack (102) is connected to a power supply end (101), and a negative electrode of the first battery pack (102) is connected to a positive electrode of a second battery pack (103); a negative electrode of the second battery pack (103) is connected to a grounding end (107); a first end of a first switch (105) is connected to the power supply end (101), a second end of the first switch (105) is connected to a first end of a second switch (106), and a control end of the first switch (105) is connected to a first output end of a control unit (108); a second end of the second switch (106) is connected to the grounding end (107), and a control end of the second switch (106) is connected to a second output end of the control unit (108); a voltage transformation unit (104) is connected between the negative electrode of the first battery pack (102) and the second end of the first switch (105); and the control unit (108) is used for controlling the closing or opening of the first switch (105) and the second switch (106) according to at least one state-of-charge value of the first battery pack (102) and the second battery pack (103). Further provided is a vehicle.

公开(公告)号：EP2409374A1

公开(公告)日：2012-01-25

申请号：EP10769235.2

申请日：2010-03-25

Applicant: BYD Company Limited

Inventor： LUO, Hongbin ,  LIAO, Yunhao ,  ZHANG, Zifeng ,  WANG, Yinghui ,  DENG, Linwang ,  CHEN, Donghong ,  YIN, Shaowen ,  TANG, Xiaohua ,  XU, Juan

IPC: H02J3/32

CPC classification number: H02J3/32 ,  Y10T307/516

Abstract: A battery-based power station for balancing the load of a power grid comprises at least a battery array (10); a bi-directional inverter unit (20) configured to charge the battery array (10) by the power grid and provide power supply from the battery array (10) to the power grid respectively; and a monitoring-and-controlling unit (30) configured to monitor the frequency and the phase of the power grid to control whether to charge the battery array (10) by the power grid or provide power supply from the battery array (10) to the power grid, whereby the load of the power grid is balanced. The battery-based power station can balance the load of the power grid effectively.

公开(公告)号：EP4534341A1

公开(公告)日：2025-04-09

申请号：EP23814683.1

申请日：2023-03-06

Applicant: BYD Company Limited

Inventor： DENG, Linwang ,  FENG, Tianyu ,  XIONG, Shi

IPC: B60L58/18

Abstract: A battery circuit (100), comprising a power supply end (101), a first battery pack (102), a second battery pack (103), a voltage transformation unit (104), a first switch (105), a second switch (106), a grounding end (107), and a control unit (108). A positive electrode of a first battery pack (102) is connected to a power supply end (101), and a negative electrode of the first battery pack (102) is connected to a positive electrode of a second battery pack (103); a negative electrode of the second battery pack (103) is connected to the grounding end (107); a first end of a first switch (105) is connected to the power supply end (101), a second end of the first switch (105) is connected to a first end of a second switch (106), and a control end of the first switch (105) is connected to a first output end of a control unit (108); a second end of the second switch (106) is connected to the grounding end (107), and a control end of the second switch (106) is connected to a second output end of the control unit (108); the voltage transformation unit (104) is connected between the negative electrode of the first battery pack (102) and the second end of the first switch (105) and is used for controlling closing or disconnection of the first switch (105) and the second switch (106) according to output power and a power threshold of the battery circuit. Also disclosed is a vehicle comprising the battery circuit.

公开(公告)号：EP4446759A1

公开(公告)日：2024-10-16

申请号：EP22934699.4

申请日：2022-09-14

Applicant: BYD Company Limited

Inventor： LI, Xiaoqian ,  FENG, Tianyu ,  DENG, Linwang ,  HONG, Jingjing

IPC: G01R31/3835

Abstract: A method and device for battery capacity determination, and a non-transitory computer-readable storage medium are provided. The method for battery capacity determination includes: acquiring a first inflection voltage, a corresponding first inflection electric quantity, a second inflection voltage and a corresponding second inflection electric quantity of a battery; controlling the battery to be charged and recording a first charging profile of the battery in real time; determining at least one target inflection point according to the first charging profile; detecting the electric quantity of the battery until the charging is completed, acquiring a first charged electric quantity and a second charged electric quantity; when the at least one target inflection point determined includes the first inflection point, calculating a current capacity of the battery according to the first inflection electric quantity, the first charged electric quantity and the second charged electric quantity.

公开(公告)号：EP4390419A1

公开(公告)日：2024-06-26

申请号：EP22897312.9

申请日：2022-09-14

Applicant: BYD Company Limited

Inventor： SHU, Shiwei ,  FENG, Tianyu ,  DENG, Linwang

IPC: G01R31/388

CPC classification number: Y02E60/10 ,  G01R31/367 ,  G01R31/388 ,  G01R31/3842

Abstract: Disclosed are a battery capacity estimation method and apparatus, and a computer storage medium. The method includes: acquiring a voltage-capacity curve of a battery in real time in a battery charging process; performing differentiation on the voltage-capacity curve to obtain a voltage differential-capacity curve; determining a voltage knee point in the voltage-capacity curve according to the voltage differential-capacity curve; acquiring a pre-calibrated reference capacity value corresponding to the voltage knee point; acquiring charging electric quantity of the battery from the voltage knee point to a full-charge state; and obtaining actual capacity of the battery based on a sum of the reference capacity value and the charging electric quantity.

公开(公告)号：EP4220209A1

公开(公告)日：2023-08-02

申请号：EP21871029.1

申请日：2021-07-30

Applicant: BYD Company Limited

Inventor： FENG, Tianyu ,  DENG, Linwang ,  SHU, Shiwei ,  LI, Xiaoqian

IPC: G01R31/389

Abstract: The present disclosure relates to the technical field of batteries, and particularly to a method for generating an electrochemical impedance spectrum for a battery, a medium, and a computer device. The method includes: collecting, in a discharge state of a battery, battery discharge information of the battery periodically according to a preset collection interval, where the battery discharge information includes collection time, and current information and voltage information associated with the collection time; performing Fourier transform according to the collection interval and battery discharge information, to obtain multiple frequency-based first battery signals; determining a second battery signal from the multiple first battery signals, where the second battery signal includes a voltage signal greater than or equal to a preset voltage threshold; and determining an electrochemical impedance at a corresponding frequency according to the second battery signal, and constructing an electrochemical impedance spectrum according to all the electrochemical impedance.