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:
May. 11, 2021
Filed:
Sep. 01, 2016
Huawei Technologies Co., Ltd., Shenzhen, CN;
Ruimin Wang, Shenzhen, CN;
Muyun Qin, Shenzhen, CN;
Jianhui Jiang, Shenzhen, CN;
Shaomin Qi, Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
The present disclosure relates to a power management circuit including a control circuit, a first switch module, a second switch module, and a voltage conversion circuit. A first input end of the control circuit receives a main battery activeness detection signal, a first output end is connected to an enabling end of the second switch module which is connected to the voltage conversion circuit and an energy recovery component, and a second output end is connected to an enabling end of the first switch module which is connected to the voltage conversion circuit, a secondary battery, and a main battery. According to the received activeness detection signal, a channel used by the energy recovery component to charge the secondary battery is connected, or a channel used by the secondary battery or the energy recovery component to charge the main battery is connected.