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:
Mar. 21, 2023
Filed:
Jul. 08, 2021
Guangzhou Automobile Group Co., Ltd., Guangzhou, CN;
Chen Zhang, San Jose, CA (US);
Meng Yao, Sunnyvale, CA (US);
Meng Wang, Sunnyvale, CA (US);
Xiaohui Li, Sunnyvale, CA (US);
Bozhi Yang, Sunnyvale, CA (US);
GUANGZHOU AUTOMOBILE GROUP CO., LTD., Guangzhou, CN;
Abstract
A vehicle-mounted device for detecting battery state comprises a controller, a load unit, and a switch unit. The load unit is coupled to the battery, the switch unit is coupled between the battery and the load unit. The controller can control the switch unit to disconnect or connect the battery and the load unit at a predefined frequency. The controller can switch the load unit to generate ripple voltage on the battery, and measure the ripple voltage of each battery cell, an abnormal state of a battery can be determined according to the ripple voltage of each battery cell.