Invention Grant
- Patent Title: Power system of electric vehicle, electric vehicle comprising the same and method for heating battery group of electric vehicle
- Patent Title (中): 电动汽车电力系统,电动车辆及电动汽车电池组加热方法
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Application No.: US14403432Application Date: 2013-05-22
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Publication No.: US09463711B2Publication Date: 2016-10-11
- Inventor: Xingchi Wu , Hongjun Wang , Shibin Xie
- Applicant: BYD COMPANY LIMITED
- Applicant Address: CN Shenzhen
- Assignee: BYD COMPANY LIMITED
- Current Assignee: BYD COMPANY LIMITED
- Current Assignee Address: CN Shenzhen
- Agency: Anova Law Group, PLLC
- Priority: CN201210160417 20120522
- International Application: PCT/CN2013/076089 WO 20130522
- International Announcement: WO2013/174268 WO 20131128
- Main IPC: H01M10/625
- IPC: H01M10/625 ; B60L11/18 ; H01M10/637 ; H01M10/633 ; H01M10/613 ; B60L15/20

Abstract:
A power system of an electric vehicle, an electric vehicle comprising the same and a method for heating a battery group of the electric vehicle are provided. The power system comprises: a battery group; a battery heater, in which the battery heater comprises a output power adjusting module configure to adjust a heating power of the battery heater by adjusting a charge current and/or a discharge current; a battery management device configured to control the output power adjusting module to adjust the heating power of the battery heater to heat the battery group according to a temperature of the battery group when the temperature of the battery group is lower than a first heating threshold and a residual electric quantity of the battery group is larger than a parking electric quantity threshold; a motor controller connected with a motor and an electric distribution box respectively; and an isolation inductor.
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