公开(公告)号：US09640786B2

公开(公告)日：2017-05-02

申请号：US14532704

申请日：2014-11-04

Applicant: Ningde Amperex Technology Limited

Inventor： Mengjiang He ,  Rulai Cai ,  Pinghua Deng ,  Peng Wang ,  Quankun Li

IPC: H01M2/04 ,  H01M2/12 ,  H01M2/34

CPC classification number: H01M2/043 ,  H01M2/04 ,  H01M2/0456 ,  H01M2/06 ,  H01M2/08 ,  H01M2/12 ,  H01M2/1223 ,  H01M2/1241 ,  H01M2/34 ,  H01M2200/00 ,  H01M2200/20 ,  H01M2220/10 ,  H01M2220/20

Abstract: A safety cap assembly of power battery comprises a cap plate and a first terminal unit, a second terminal unit, a vent, an electrolyte-injection hole and a safety reverse valve provided to the cap plate; the first terminal unit is electrically connected to the cap plate; the second terminal unit is insulated from and assembled to the cap plate; the safety reverse valve is electrically connected to the cap plate; a short circuit protection conducting plate is provided above the cap plate, is electrically connected to the second terminal unit, and is positioned above the safety reverse valve; the first terminal unit comprises a first terminal body, and a metal gasket and a resistance plate around the first terminal body, the resistance plate is provided below the metal gasket and comprises a substrate and a coating on a surface of the substrate.