Title:
【発明の名称】薄型電池
Document Type and Number:
Japanese Patent JP3085018
Kind Code:
B2
Abstract:
PURPOSE:To provide a thin type lithium secondary battery excellent in reliability and safety by bonding a bridging plate inside a metallic battery jar, where the bridging plate is adapted to reinforce the battery jar together with a current collector of either of a positive electrode and a negative electrode. CONSTITUTION:A positive electrode, a negative electrode and a separator are wound in a spiral-shape, the terminal end of the separator is fixed via an adhesive tape, and then, an electrode plate group 12 is pressurized into an elliptic shape. A bridging plate 15 made of one of iron, aluminum, nickel, copper, stainless steel and nickel-plated iron is connected by welding to the tip of a negative electrode lead 17. The bridging plate 15 is adapted to reinforce a battery jar 11 in the thickness direction, where a length thereof in this direction is set the same as an inner dimension of the battery jar 11. After the electrode plate group 12 is inserted onto the battery jar 11, the lead 17 provided with the bridging plate 15 is superposed inside the jar so that the battery jar 11 is bonded to the bridging plate 15. The positive electrode lead 16 is welded to a sealing plate 13, followed by injection of an electrolyte, thus obtaining a thin type lithium secondary battery.
Inventors:
Yanomaru Tomoyoshi
Takafumi Fujii
Kikuo Seno
Hiroshi Fukuda
Takafumi Fujii
Kikuo Seno
Hiroshi Fukuda
Application Number:
JP9403693A
Publication Date:
September 04, 2000
Filing Date:
April 21, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01M50/528; (IPC1-7): H01M2/26
Domestic Patent References:
| JP63264863A | ||||
| JP384852A | ||||
| JP4206142A | ||||
| JP4135162U | ||||
| JP3810555Y1 | ||||
| JP4114028Y1 |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)