SECONDARY BATTERY - Sanyo Electric Co., Ltd.

Title:

SECONDARY BATTERY

Document Type and Number:

Japanese Patent JP3363708

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a secondary battery which can be stably used for a long period of time because charging/discharging characteristics or cycle characteristics are not deteriorated even in the case where charging and discharging are performed with a high current with a large battery capacity.
SOLUTION: In a secondary battery, an electrode group formed in multiple layers in the condition where a separator 3 is provided between a positive electrode 1 comprising positive electrode material 1b attached to a positive electrode collector 1a and a negative electrode 2 comprising negative electrode material 2b attached to a negative electrode collector 2a is contained in a battery container 4. In this case, a part where positive electrode material is not attached is provided at an end part of the positive electrode collector 1a to which the positive electrode material 1b is attached, a part where negative electrode material is not attached is provided at an end part of the negative electrode collector 2b to which the negative electrode material 2b is attached, the part of the positive electrode collector 1a where the positive electrode material 1b is not attached is crimped to a positive electrode terminal 4b, and the part of the negative electrode collector 2b where the negative electrode material is not attached is crimped to a negative electrode terminal 4a.

Inventors:

Seiji Yoshimura
Yasuyuki Kuzumoto
Toshiyuki Noma
Koji Nishio

Application Number:

JP18887696A

Publication Date:

January 08, 2003

Filing Date:

June 27, 1996

Export Citation:

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