公开(公告)号：WO2012013077A1

公开(公告)日：2012-02-02

申请号：PCT/CN2011/074461

申请日：2011-05-20

Applicant: BYD COMPANY LIMITED ,  XU, Wenhui ,  HAN, Yaochuan ,  FENG, Wei ,  YANG, Qinyao ,  XIA, Wenjin ,  MA, Shibin ,  LI, Xianyin

Inventor： XU, Wenhui ,  HAN, Yaochuan ,  FENG, Wei ,  YANG, Qinyao ,  XIA, Wenjin ,  MA, Shibin ,  LI, Xianyin

IPC: H01M10/42 ,  H01M10/50 ,  H05B3/00 ,  H02J7/00

CPC classification number: H01L23/345 ,  H01L2924/0002 ,  H01M10/615 ,  H01M10/625 ,  H01M10/651 ,  H01M10/657 ,  H01M10/6571 ,  H01M10/6572 ,  H02J7/0014 ,  H02J7/0054 ,  H02J7/0075 ,  H02J7/0091 ,  H02J7/0093 ,  H02M3/158 ,  Y02E60/12 ,  Y02T10/7055 ,  H01L2924/00

Abstract: The present invention provides a battery heating circuit, comprising a plurality of switch units (1), a switching control module (100), a damping element R1, an energy storage circuit, and a polarity inversion unit (101), wherein, the energy storage circuit is connected with the battery, and comprises a current storage element L1 and a plurality of charge storage elements C1; the plurality of charge storage elements C are connected with the plurality of switch units (1) in series in one-to-one correspondence to form a plurality of branches; the plurality of branches are connected in parallel with each other and then connected with the current storage element L1 and damping element R1 in series; the switching control module (100) is connected with the switch units (1), and is configured to control ON/OFF of the switch units (1), so that the energy flows to and fro between the battery and the energy storage circuit when the switch units (1) switch on; the polarity inversion unit (101) is connected with the energy storage circuit, and is configured to invert the voltage polarity of the plurality of charge storage elements C1 after the switch units (1) switch from ON state to OFF state. The heating circuit provided in the present invention can improve charge/discharge performance of the battery, as well as safety and work efficiency in the battery heating process.

Abstract translation: 本发明提供一种电池加热电路，包括多个开关单元（1），开关控制模块（100），阻尼元件R1，能量存储电路和极性反转单元（101），其中，能量 存储电路与电池连接，并且包括电流存储元件L1和多个电荷存储元件C1; 多个电荷存储元件C与多个开关单元（1）一一对应地串联连接以形成多个分支; 多个分支彼此并联连接，然后与电流存储元件L1和阻尼元件R1串联连接; 开关控制模块（100）与开关单元（1）连接，并且被配置为控制开关单元（1）的接通/断开，使得能量在电池和能量存储电路之间来回流动， 开关单元（1）接通; 极性反转单元（101）与能量存储电路连接，并且被配置为在开关单元（1）从接通状态切换到断开状态之后反转多个电荷存储元件C1的电压极性。 本发明提供的加热电路可以提高电池的充放电性能，以及在电池加热过程中的安全性和工作效率。