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:
Dec. 13, 2016
Filed:
Nov. 05, 2014
Huawei Technologies Co., Ltd., Shenzhen, CN;
Zhaoxue Cui, Shenzhen, CN;
Huawei Technologies Co., Ltd., Shenzhen, CN;
Abstract
An uninterruptible power supply circuit is provided. The uninterruptible power supply circuit includes a bidirectional selector switch, a first-type bidirectional converter, a second-type bidirectional converter, an energy storage apparatus, and a filtering apparatus, and is alternatively connected to an alternating-current power supply and the energy storage apparatus by using the bidirectional selector switch; the first-type bidirectional converter is disposed between the bidirectional selector switch and the filtering apparatus, the second-type bidirectional converter is disposed between the filtering apparatus and a load, and both the first-type bidirectional converter and the second-type bidirectional converter have a function of rectifying or inverting. By using a bidirectional converter and a bidirectional selector switch, alternating-current commercial power, the energy storage apparatus, and a charger required by the energy storage apparatus can share the bidirectional converter; compared with an existing uninterruptible power supply circuit, no extra charger or high-power conversion circuit is required.