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. 28, 2020
Filed:
Oct. 20, 2017
Applicant:
Nio Nextev Limited, Hong Kong, CN;
Inventors:
Assignee:
NIO NEXTEV LIMITED, Hong Kong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01); H02J 7/34 (2006.01); H01M 10/42 (2006.01); H01M 10/46 (2006.01);
U.S. Cl.
CPC ...
H02J 7/345 (2013.01); H01M 10/4257 (2013.01); H01M 10/46 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01);
Abstract
The present invention proposes power battery pre-charge system and device for an electric vehicle, said power battery pre-charge device comprises a pre-charge circuit formed by a current source circuit and a bus capacitor, wherein said current source circuit provides a current for charging the bus capacitor, wherein said current source circuit includes a triode, a first resistor, a second resistor and at least two high-voltage MOSFET transistors. The power battery pre-charge system and device for an electric vehicle as disclosed in the present invention have high charging efficiency, low cost and low failure rate.