Title: Lithium ion cell internal pressure measuring method
Application Number: 200610130194 Application Date: 2006.12.14
Publication Number: 1976109 Publication Date: 2007.06.06
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01M10/38;H01M10/40;G01L1/00
Applicant(s) Name: Tianjin Lishen Battery Co., Ltd. Address:
Inventor(s) Name: Zeng Tao;Zhang Lianzhong
Attorney & Agent: liuji xiang
Abstract:
    A method for determining internal pressure of Li ion cell includes placing conventional pressure paper between positive electrode and negative electrode on position to be measured and carrying out winding, going into shell, drying liquid injecting, sealing and forming to obtain cell product; cutting cell product off and taking out pressure paper then comparing color of pressure paper with conventional standard colorimetric card for knowing big or small and distribution sate of pressure at various internal position of cell.
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