| US 7,534,525 B2 | ||
| Battery pack and method for producing battery pack | ||
| Masaru Hiratsuka, Kanagawa (Japan); Mitsuo Sakamoto, Tokyo (Japan); Takao Sawaguchi, Miyagi (Japan); Kazuhito Hatta, Fukushima (Japan); and Hiroyuki Yamada, Fukushima (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Filed on Aug. 25, 2006, as Appl. No. 11/467,389. | ||
| Application 11/467389 is a division of application No. 10/834532, filed on Apr. 29, 2004, granted, now 7,348,762. | ||
| Claims priority of application No. P2003-126714 (JP), filed on May 01, 2003. | ||
| Prior Publication US 2006/0283008 A1, Dec. 21, 2006 | ||
| Int. Cl. H01M 2/00 (2006.01); H01M 2/02 (2006.01); H01M 2/04 (2006.01); H01M 2/08 (2006.01); H01M 10/14 (2006.01) | ||
| U.S. Cl. 429—163 [429/175; 429/176; 429/177; 29/730; 29/731] | 3 Claims |
| 1. A method for producing a battery pack comprising:
a first step of housing a battery element having a cathode, an anode, a polymer electrolyte, and terminals being drawn from
the cathode and the anode, in a recessed part of a package body, said package body having (a) first area having a recessed
part (b) a second area contiguous to the first area and forming a substantially straight line between the first area and the
second area (c) a third area contiguous to the second area and forming a substantially straight second line between the second
area and the third area such that the second line is substantially perpendicular to the first line;
a second step of covering the battery element with the second area by folding the second area at a first folding edge located
where the first area and the second area meet such that the second area is folded over a first surface of the first area so
as to cover any exposed surface of the battery element with the second area, the third area now adjacent to the first area
as a result of folding the second area over the first surface of the first area, and joining the first area to the second
area;
a third step of connecting the terminals of the battery element to a connecting board having a terminal part electrically
connected to an external device, providing a frame in the periphery of the housing recessed part in which the battery element
is housed and disposing the connecting board in the frame;
a fourth step of covering the second surface of the first area by folding the third area of the package body at a second folding
edge located where the second area and the third area meet such that the third area is folded over a second surface of the
first area; and
a fifth step of joining the third area to the first area
wherein,
the packaged body is folded along the first folding edge so that the second area is in contact with the first area along a
periphery of the battery element, and
the packaged body is folded along the second folding edge so that third area overlies and is in contact with an exposed surface
of the first area.
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