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1. WO2020107903 - BATTERY PACK VOLTAGE SAMPLING CIRCUIT AND METHOD, AND SYSTEM

Publication Number WO/2020/107903
Publication Date 04.06.2020
International Application No. PCT/CN2019/097051
International Filing Date 22.07.2019
IPC
G01R 31/382 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
G01R 31/396 2019.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
396Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
CPC
G01R 31/382
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
382Arrangements for monitoring battery or accumulator variables, e.g. SoC
G01R 31/396
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
396Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Applicants
  • 珠海格力电器股份有限公司 GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI [CN]/[CN]
Inventors
  • 陈勇 CHEN, Yong
  • 宋江喜 SONG, Jiangxi
  • 袁金荣 YUAN, Jinrong
  • 胡齐桂 HU, Qigui
  • 黄猛 HUANG, Meng
Agents
  • 北京康信知识产权代理有限责任公司 KANGXIN PARTNERS, P.C.
Priority Data
201811429045.527.11.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BATTERY PACK VOLTAGE SAMPLING CIRCUIT AND METHOD, AND SYSTEM
(FR) CIRCUIT ET PROCÉDÉ D'ÉCHANTILLONNAGE DE TENSION DE BLOC-BATTERIE, ET SYSTÈME
(ZH) 电池组电压采样电路及方法、系统
Abstract
(EN)
A battery pack voltage sampling circuit and method, and a system. The battery pack voltage sampling circuit comprises at least two voltage sampling loops. Each of the voltage sampling loops comprises a same battery pack, at least one resistor connected in parallel with the battery pack, and at least one controllable logic switch. The resistance of each of the voltage sampling loops comprises a sampling resistor for voltage sampling. Each of the controllable logic switches has a first state in which all the voltage sampling loops are disconnected, and a second state in which each of the voltage sampling loops is independently connected. By using the connection method of multiple voltage sampling loops, and controlling the controllable logic switches in the circuit according to different sampling requirements, unnecessary power consumption caused by resistance in the circuit can be can eliminated; in addition, by controlling the controllable logic switches to perform voltage sampling multiple times and performing averaging, the accuracy of voltage sampling can be increased, and the reliability of the voltage sampling circuit can be enhanced.
(FR)
L'invention concerne un circuit et un procédé d'échantillonnage de tension de bloc-batterie, ainsi qu'un système. Le circuit d'échantillonnage de tension de bloc-batterie comprend au moins deux boucles d'échantillonnage de tension. Chacune des boucles d'échantillonnage de tension comprend un même bloc-batterie, au moins une résistance connectée en parallèle au bloc-batterie, et au moins un commutateur logique pouvant être commandé. La résistance de chacune des boucles d'échantillonnage de tension comprend une résistance d'échantillonnage pour l'échantillonnage de tension. Chacun des commutateurs logiques pouvant être commandés comporte un premier état dans lequel toutes les boucles d'échantillonnage de tension sont déconnectées, et un second état dans lequel chacune des boucles d'échantillonnage de tension est connectée indépendamment. En utilisant le procédé de connexion de multiples boucles d'échantillonnage de tension et en commandant les commutateurs logiques pouvant être commandés dans le circuit selon différentes exigences d'échantillonnage, il est possible d'éliminer une consommation d'énergie inutile provoquée par une résistance dans le circuit. En outre, en commandant les commutateurs logiques pouvant être commandés pour effectuer un échantillonnage de tension à plusieurs reprises et en réalisant une moyenne, il est possible d'améliorer la précision de l'échantillonnage de tension ainsi que la fiabilité du circuit d'échantillonnage de tension.
(ZH)
一种电池组电压采样电路及方法、系统,其中,电池组电压采样电路包括至少两个电压采样回路,各所述电压采样回路中包括:同一电池组、与所述电池组并联的至少一个电阻、及至少一个可控逻辑开关,其中,各所述电压采样回路的电阻中包括用于电压采样的采样电阻;各所述可控逻辑开关具有断开所有所述电压采样回路的第一状态、和使各所述电压采样回路分别独立连通的第二状态。通过采用多个电压采样回路的连接方式,根据不同采样需要对电路中的可控逻辑开关进行控制,可以消除电路中因电阻而产生的无用功耗,同时通过控制可控逻辑开关来进行多次电压采样并求均值,能够提高电压采样的精度,增强电压采样电路的可靠性。
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