The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2015
Filed:
Jul. 18, 2011
Wenhui Xu, Shenzhen, CN;
Yaochuan Han, Shenzhen, CN;
Wei Feng, Shenzhen, CN;
Qinyao Yang, Shenzhen, CN;
Wenjin Xia, Shenzhen, CN;
Shibin MA, Shenzhen, CN;
Wenhui Xu, Shenzhen, CN;
Yaochuan Han, Shenzhen, CN;
Wei Feng, Shenzhen, CN;
Qinyao Yang, Shenzhen, CN;
Wenjin Xia, Shenzhen, CN;
Shibin Ma, Shenzhen, CN;
BYD Company Limited, Shenzhen, CN;
Abstract
A circuit for heating a battery includes a switch unit, switching control module, damping component, energy storage circuit, and freewheeling circuit. The energy storage circuit is connected with the battery, and includes a current storage component and charge storage component. The damping component, switch unit, current storage component, and charge storage component are connected in series. The switching control module is connected with the switch unit, and is configured to control switching on and off of the switch unit so that current can flow back-and-forth between the battery and energy storage circuit when the switch unit switches on, and amplitude of the current flowing from the energy storage circuit to the battery can be controlled. The freewheeling circuit is configured to sustain the current flowing to the battery when there is current flowing from the energy storage circuit to the battery and after the switch unit switches off.