Invention Grant
- Patent Title: Battery heating circuits and methods with resonance components in series using energy transfer and voltage inversion
- Patent Title (中): 电池加热电路和共振元件串联使用能量传递和电压反转的方法
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Application No.: US13170021Application Date: 2011-06-27
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Publication No.: US08841883B2Publication Date: 2014-09-23
- Inventor: Wenhui Xu , Yaochuan Han , Wei Feng , Qinyao Yang , Wenjin Xia , Shibin Ma
- Applicant: Wenhui Xu , Yaochuan Han , Wei Feng , Qinyao Yang , Wenjin Xia , Shibin Ma
- Applicant Address: CN Shenzhen
- Assignee: BYD Company Limited
- Current Assignee: BYD Company Limited
- Current Assignee Address: CN Shenzhen
- Agency: Jones Day
- Priority: CN201010245288 20100730; CN201010274785 20100830; CN201010606082 20101223
- Main IPC: H01M10/46
- IPC: H01M10/46 ; H02J7/00 ; H01M10/657 ; H01M10/625 ; H01M10/6571 ; H01M10/615 ; H02M3/158

Abstract:
Circuit and method for heating a battery. The circuit includes the battery including parasitic damping and current storage components, switch unit, switching control component, charge storage component, and energy transfer and superposition unit. The charge storage and current storage components are parts of an energy storage circuit. The switching control component turns on the switch unit so as to allow current to flow between the battery and charge storage component and turns off the switch unit so as to stop the current. The energy transfer and superposition unit, after the switch unit is turned on and then off, transfers energy from the charge storage component to an energy storage component and then adjusts a storage voltage associated with the charge storage component so that a positive voltage terminal of the charge storage component is coupled, directly or indirectly, to a negative voltage terminal of the battery.
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