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Title: Overcharge protection of batteries using current interrupt devices

Abstract

A battery system includes a main electrochemical cell that includes a cathode and an anode, a cathode tab electrically coupled to the cathode, and an anode tab electrically coupled to the anode. A second electrochemical cell is electrically coupled to the cathode tab and the anode tab. An interrupt device, such as a bi-stable metal disc, is operably coupled to the second electrochemical cell and at least one of the cathode tab or the anode tab. Upon overcharging of the main electrochemical cell, the voltage between the cathode tab and the anode tab causes the second electrochemical cell to generate gases that triggers the interrupt device, which in turn disconnects at least one of the cathode tab or the anode tab, thereby protecting the main electrochemical cell from further damages.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
24M Technologies, Inc., Cambridge, MA (United States); Kyocera Corp., Kyoto (Japan)
Sponsoring Org.:
USDOE
OSTI Identifier:
1735278
Patent Number(s):
10777852
Application Number:
15/941,673
Assignee:
24M Technologies, Inc. (Cambridge, MA); Kyocera Corporation (Kyoto, JP)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
H - ELECTRICITY H02 - GENERATION H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER
DOE Contract Number:  
EE0006830
Resource Type:
Patent
Resource Relation:
Patent File Date: 03/30/2018
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE

Citation Formats

Woodford, William Henry, Ota, Naoki, Fukushima, Takaaki, Disko, Jeffry, and Chen, Junzheng. Overcharge protection of batteries using current interrupt devices. United States: N. p., 2020. Web.
Woodford, William Henry, Ota, Naoki, Fukushima, Takaaki, Disko, Jeffry, & Chen, Junzheng. Overcharge protection of batteries using current interrupt devices. United States.
Woodford, William Henry, Ota, Naoki, Fukushima, Takaaki, Disko, Jeffry, and Chen, Junzheng. Tue . "Overcharge protection of batteries using current interrupt devices". United States. https://www.osti.gov/servlets/purl/1735278.
@article{osti_1735278,
title = {Overcharge protection of batteries using current interrupt devices},
author = {Woodford, William Henry and Ota, Naoki and Fukushima, Takaaki and Disko, Jeffry and Chen, Junzheng},
abstractNote = {A battery system includes a main electrochemical cell that includes a cathode and an anode, a cathode tab electrically coupled to the cathode, and an anode tab electrically coupled to the anode. A second electrochemical cell is electrically coupled to the cathode tab and the anode tab. An interrupt device, such as a bi-stable metal disc, is operably coupled to the second electrochemical cell and at least one of the cathode tab or the anode tab. Upon overcharging of the main electrochemical cell, the voltage between the cathode tab and the anode tab causes the second electrochemical cell to generate gases that triggers the interrupt device, which in turn disconnects at least one of the cathode tab or the anode tab, thereby protecting the main electrochemical cell from further damages.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {9}
}

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