公开(公告)号：WO2014094597A1

公开(公告)日：2014-06-26

申请号：PCT/CN2013/089666

申请日：2013-12-17

Applicant: SHENZHEN BYD AUTO R&D COMPANY LIMITED ,  BYD COMPANY LIMITED

Inventor： ZHU, Xiang ,  HE, Zhiqiang ,  YANG, Yun

IPC: G01R31/36 ,  G01R19/165

CPC classification number: G01R31/3658 ,  G01R19/16542 ,  G01R31/362 ,  G01R35/00 ,  H01M10/482

Abstract: A battery pack fault detection device and a method for detecting a fault of a battery pack are provided. The battery pack fault detection device comprises: N diodes in which each battery is connected with one of the N diodes in anti-parallel via a detecting line; N+1 switches; a switch control circuit (4) for switching on or switching off each switch; a voltage collection circuit (5) connected with the switch control circuit (4) for collecting a voltage of the battery; an analog-to-digital conversion circuit (6) for performing an analog-digital conversion on the voltage of the battery to obtain a digital voltage; a detection control circuit (7) connected with the switch control circuit (4) and the analog-to-digital conversion circuit (6) for controlling the switch control circuit (4) to switch on or off each switch and for comparing the digital voltage with a preset value to judge a fault of the battery pack.

Abstract translation: 提供一种电池组故障检测装置和用于检测电池组的故障的方法。 电池组故障检测装置包括：N个二极管，其中每个电池经由检测线与反并联的N个二极管中的一个连接; N + 1开关; 用于接通或关闭每个开关的开关控制电路（4） 与开关控制电路（4）连接的用于收集电池电压的电压采集电路（5） 模数转换电路（6），用于对电池的电压执行模拟数字转换以获得数字电压; 与开关控制电路（4）连接的检测控制电路（7）和模拟 - 数字转换电路（6），用于控制开关控制电路（4）接通或断开每个开关，并将数字电压 具有预设值以判断电池组的故障。