Title:
SELF-HEATING CIRCUIT OF BATTERY, ELECTRIC VEHICLE USING CIRCUIT, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/212852
Kind Code:
A1
Abstract:
A self-heating circuit of a battery, the circuit comprising: a capacitor (Cm), a transformer (T1), and a battery, and further comprising: a primary-side conversion circuit, which electrically connects a primary-side winding of the transformer (T1) to the capacitor (Cm); a secondary-side conversion circuit, which electrically connects a secondary-side winding of the transformer (T1) to the battery; and a battery management system, which is electrically connected to the battery, the capacitor (Cm), the primary-side conversion circuit, and the secondary-side conversion circuit. When the battery management system controls the capacitor (Cm) to perform cyclic charging and discharging on the battery, the internal resistance of the battery is in a self-heating state. The described self-heating circuit of the battery solves the problems in the traditional technology of high costs and lack of safety due to a power battery needing to be heated during the charging and discharging processes of the power battery in a low temperature environment.
Inventors:
LIU JUN (CN)
FENG YINGYING (CN)
YAO SHUN (CN)
XU JINZHU (CN)
ZHANG YUANZHAO (CN)
FENG YINGYING (CN)
YAO SHUN (CN)
XU JINZHU (CN)
ZHANG YUANZHAO (CN)
Application Number:
PCT/CN2020/134076
Publication Date:
October 28, 2021
Filing Date:
December 04, 2020
Export Citation:
Assignee:
SHENZHEN VMAX NEW ENERGY CO LTD (CN)
International Classes:
H01M10/615
Foreign References:
| CN111525196A | 2020-08-11 | |||
| CN103213543A | 2013-07-24 | |||
| CN107666028A | 2018-02-06 | |||
| CN102668229A | 2012-09-12 | |||
| US6078163A | 2000-06-20 |
Attorney, Agent or Firm:
SHENZHEN KANGHONG INTELLECTUAL PROPERTY AGENT CO., LTD. (CN)
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