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1. (WO2017034546) OVERCHARGE PROTECTION FOR A BATTERY MODULE

Pub. No.:    WO/2017/034546    International Application No.:    PCT/US2015/046639
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 26 01:59:59 CEST 2015
IPC: H01M 2/34
H01M 2/12
H01M 10/0525
H01M 2/30
Applicants: JOHNSON CONTROLS TECHNOLOGY COMPANY
Inventors: ZHANG, Xugang
FUHR, Jason D.
SELTHAFNER, Peter A.
BOONE, David R.
Title: OVERCHARGE PROTECTION FOR A BATTERY MODULE
Abstract:
The present disclosure includes a lithium-ion battery module that has a housing and a plurality of lithium-ion battery cells disposed in the housing. Each of the plurality of lithium-ion battery cells includes a first terminal with a first polarity, a second terminal with a second polarity opposite to the first polarity, an overcharge protection assembly, and a casing electrically coupled to the first terminal such that the casing has the first polarity, the casing having an electrically conductive material. The lithium-ion battery module includes a vent of the overcharge protection assembly electrically coupled to the casing and a conductive component of the overcharge protection assembly electrically coupled to the second terminal. The vent is configured to contact the conductive component to cause a short circuit and to vent a gas from the casing into the housing when a pressure in the casing reaches a threshold value.