Patent ID: 9159983
Filing Date: 2015-10-13
Classification: H01M,Y02E,Y02T

Abstract:
1. A battery comprising a battery case, a power generating element having a positive electrode and a negative electrode hermetically contained in the battery case, and positive and negative electrode terminals provided on the outside of the battery case, wherein the battery case includes a safety valve which breaks to release internal gas from the battery case when internal pressure of the battery case rises, and at least one of joining portions of the power generating element with the positive electrode terminal and the negative electrode terminal includes: the second portion of the external terminal is connected to the electrode terminal, the current collecting member is connected to the power generating element inside the battery case, and the sealing cap is configured to at least partially move away from the battery case without being broken before the safety valve breaks when internal pressure of the battery case rises, causing a part of the external terminal to be deformed to break the breakable portion and cut off a current path of the battery without releasing internal gas from the battery case.