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:
Oct. 01, 2024
Filed:
Sep. 16, 2021
Gree Electric Appliances, Inc. of Zhuhai, Guangdong, CN;
Yongying Guo, Guangdong, CN;
Meng Huang, Guangdong, CN;
Yingyi Jiang, Guangdong, CN;
Songru Huang, Guangdong, CN;
Xiaogao Liu, Guangdong, CN;
Gree Electric Appliances, Inc. of Zhuhai, Guangdong, CN;
Abstract
Disclosed in the present disclosure are an insulation resistance detection circuit, a resistance detection method, a converter and a photovoltaic centrifuge. The insulation resistance detection circuit includes a resistance detection module connected between a positive electrode and a negative electrode of a direct-current bus to be detected. The resistance detection module includes a first resistance bridge and a second resistance bridge arranged in parallel. The first resistance bridge is connected to the positive electrode of the direct-current bus by means of a first sampling resistor R. The second resistance bridge is connected to the negative electrode of the direct-current bus by means of a second sampling resistor R, and both the first sampling resistor Rand the second sampling resistor Rare equipped with voltage sampling chips. The resistance detection module is configured to calculate an insulation resistance value of the direct-current bus according to voltage values of the two sampling resistors before and after a first switch S is switched.