Title:
NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP3166880
Kind Code:
B2
Abstract:
PURPOSE: To provide a nonaqueous electrolyte secondary battery preventing the thermal runaway of the battery and having improved safety by designing a battery structure excellent in heat dissipation as much as possible.
CONSTITUTION: A cylindrical lithium nonaqueous electrolyte secondary battery having a spiral electrode structure is constituted of belt-like positive electrodes 4, 5, a belt-like negative electrode using lithium or lithium ions as an active material 6, a belt-like separator 3, and a nonaqueous electrolyte, the negative electrode has a three-layer structure using a metal foil longer than the positive electrodes 4, 5 and the negative electrode active material 6 as a negative electrode substrate 2 and arranged with the negative electrode active material 6 on both sides of the substrate 2, and the negative electrode substrate 2 is arranged on the outermost periphery of the spiral electrode. The heat generated in the battery is efficiently dissipated to the outside of the battery, the safety of the battery can be improved, and the industrial value is very large.
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Inventors:
Masayasu Arakawa
Shinichi Tobishima
Keiichi Saito
Shigeo Sugihara
Masahiro Ichimura
Shinichi Tobishima
Keiichi Saito
Shigeo Sugihara
Masahiro Ichimura
Application Number:
JP31939292A
Publication Date:
May 14, 2001
Filing Date:
November 04, 1992
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H01M10/05; H01M10/052; H01M10/0587; (IPC1-7): H01M10/40
Domestic Patent References:
| JP251875A |
Attorney, Agent or Firm:
Masaki Amemiya