Patent ID: 8916278
Filing Date: 2014-12-23
Classification: H01M,Y02E

Abstract:
1. A battery pack, comprising: a battery cell; a protective circuit board comprising an internal terminal and a positive temperature coefficient (PTC) device; a cell tab electrically coupled to the battery cell, the cell tab contacting the internal terminal of the protective circuit board, the cell tab comprising a cell tab surface facing the battery cell; the PTC device comprising a PTC surface facing the battery cell; and an electrically-insulating heat-transfer member interposed between the battery cell and the protective circuit board, the electrically-insulating heat-transfer member contacting the cell tab surface and the PTC surface, thereby providing a thermal connection between the cell tab surface and the PTC surface both facing the battery cell while electrically insulating the cell tab surface from the PTC surface, wherein the internal terminal extends beyond at least an edge of the cell tab, and the electrically-insulating heat-transfer member contacts both the cell tab and the internal terminal.