Title:
CYLINDRICAL LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2012/014929
Kind Code:
A1
Abstract:
[Problem] To provide a cylindrical lithium-ion battery equipped with a conducting path capable of flowing a large current without reducing the assembly workability of the battery. [Solution] The cylindrical lithium-ion battery has a structure in which an electrode body wound in a spiral shape is housed in a cylindrical battery can having an opening while orienting the winding axis in an upper and lower direction, an insulating plate having a through-hole is disposed on the opening side of the electrode body, and the opening is sealed by a sealing body which is also used as the external output terminal of one electrode plate. In the cylindrical lithium-ion battery, the conducting path between the one electrode plate and the sealing body which is also used as the external output terminal consists of a main conducting path and a bypass conducting path. The main conducting path is formed such that a collector tab connected to the one electrode plate is led through the through-hole of the insulating plate to a space between the upper surface of the insulating plate and the bottom surface of the sealing body and is connected to a connection region on the bottom surface of the sealing body while meandering in the space. The bypass conducting path is formed as a collector tab contacting both the meandering collector tab portion and the bottom surface of the sealing body.
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Inventors:
ITO, Katsuya (5-5, Keihan-Hondori 2-chome, Moriguchi-sh, Osaka 77, 〒5708677, JP)
Application Number:
JP2011/067077
Publication Date:
February 02, 2012
Filing Date:
July 27, 2011
Export Citation:
Assignee:
SANYO ELECTRIC CO., LTD. (5-5 Keihan-Hondori 2-chome, Moriguchi-shi Osaka, 77, 〒5708677, JP)
三洋電機株式会社 (〒77 大阪府守口市京阪本通２丁目５番５号 Osaka, 〒5708677, JP)
三洋電機株式会社 (〒77 大阪府守口市京阪本通２丁目５番５号 Osaka, 〒5708677, JP)
International Classes:
H01M2/22; H01M2/26; H01M10/0525; H01M10/0587
Attorney, Agent or Firm:
OHMAE, Kaname (9F. Lions Bldg. Ohtemae, 2-3-14 Uchihiranomachi, Chuo-k, Osaka-shi Osaka 37, 〒5400037, JP)
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