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:
Apr. 04, 2017
Filed:
Sep. 15, 2014
Ningde Amperex Technology Limited, NingDe, CN;
Dongguan Amperex Technology Limited, Dongguan, CN;
Xiao bo Chen, NingDe, CN;
Wei feng Chen, NingDe, CN;
Qing feng Yuan, NingDe, CN;
Ping hua Deng, NingDe, CN;
Quan kun Li, NingDe, CN;
Xue hui Wang, NingDe, CN;
Wei zhong Wu, NingDe, CN;
Ningde Amperex Technology Limited, NingDe, CN;
Dongguan Amperex Technology Limited, Dongguan, CN;
Abstract
Provided is a lithium ion battery including a battery can, a battery core received in the battery can, electrolyte filled in the battery can, and a battery cover assembled to the battery can. The battery can or the battery cover is provided with a pressure relief valve, and the pressure relief valve is coupled with a mesh cover defining a number of through holes therein. According to the present invention, when thermal runaway occurs to the lithium ion battery, the pressure relief valve breaks timely. Only gases and electrolyte vapor can pass through the mesh cover. Solid particles cannot pass through the mesh cover. Therefore, ignition of the flammable gases, the electrolyte vapor and the high temperature solid particles in the surrounding air afar from the pressure relief valve is avoided and the safety performance of the lithium ion battery can be improved remarkably.