发明申请
- 专利标题: CHARGE AND DISCHARGE CONTROL CIRCUIT AND BATTERY DEVICE
- 专利标题(中): 充电和放电控制电路和电池装置
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申请号: US12415093申请日: 2009-03-31
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公开(公告)号: US20090243543A1公开(公告)日: 2009-10-01
- 发明人: Muneharu Kawana , Atsushi Sakurai , Kazuaki Sano , Toshiyuki Koike , Yoshihisa Tange
- 申请人: Muneharu Kawana , Atsushi Sakurai , Kazuaki Sano , Toshiyuki Koike , Yoshihisa Tange
- 优先权: JPJP2008-094885 20080401
- 主分类号: H02J7/00
- IPC分类号: H02J7/00
摘要:
Provided is a charge and discharge control circuit capable of further preventing poor charge of a battery, and a battery device. Cell balance periods are detected before charge of respective batteries is stopped even when an overcharge detection voltage of a certain charge and discharge control circuit becomes lower than a cell balance period detection voltage thereof due to process variations occurring in mass production of the charge and discharge control circuits. That is, the charge of the respective batteries is stopped after cell balance control. Therefore, the respective batteries can be further prevented from being poorly charged.