| US 7,601,460 B2 | ||
| Prismatic battery and manufacturing method thereof | ||
| Tatsuya Hashimoto, Wakayama (Japan); Masatomo Nagatani, Wakayama (Japan); and Hiroaki Ichinose, Osaka (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Nov. 26, 2004, as Appl. No. 10/996,450. | ||
| Claims priority of application No. 2003-398482 (JP), filed on Nov. 28, 2003; application No. 2003-398841 (JP), filed on Nov. 28, 2003; application No. 2003-406878 (JP), filed on Dec. 05, 2003; application No. 2004-173422 (JP), filed on Jun. 11, 2004; and application No. 2004-187463 (JP), filed on Jun. 25, 2004. | ||
| Prior Publication US 2005/0118501 A1, Jun. 02, 2005 | ||
| Int. Cl. H01M 2/08 (2006.01); H01M 2/28 (2006.01); H01M 2/04 (2006.01); H01M 4/82 (2006.01) | ||
| U.S. Cl. 429—180 [429/181; 429/185; 429/161; 429/176; 29/623.4] | 18 Claims |
| 1. A prismatic battery comprising:
a square tube case having at least one open end for accommodating an electrode plate group;
a current collector of one polarity welded to one end of the electrode plate group;
an electrode pole that functions as an electrode terminal connected to said current collector;
a buffer that connects said current collector and said electrode pole and allows movement of said electrode pole in a horizontal
direction and a vertical direction;
a lid for closing said one open end of the case, the lid being formed with a support cylinder that is fitted onto the electrode
pole; and
an insulating gasket interposed between an inner periphery of the support cylinder and an outer periphery of the electrode
pole, wherein the support cylinder is formed with at least one annular crimped portion that has an arc-shaped longitudinal
cross section.
|