NIO Inc.
Method and system for secondary internal current mechanisms for a lithium-ion cell

Abstract:

An energy storage device having improved safety is provided, and methods of manufacturing the same. The device can be an electrochemical cell that includes: a positive electrode including a positive electrode active material in electrically conductive contact with a positive electrode current collector; a negative electrode including a negative electrode active material in electrically conductive contact with a negative electrode current collector and a negative electrode tab connected to the negative electrode current collector and a negative electrically conductive member; an electrically insulative and ion conductive medium in ionically conductive contact with the positive electrode and the negative electrode; and an outer case containing the positive electrode, negative electrode and electrically insulative and ion conductive medium, where the outer case comprises a scored area connected to a cooling plate.