Battery pack

A technology for battery components and battery components, applied in battery pack components, electrical components, battery covers/end covers, etc., can solve problems such as liquid electrolyte leakage, improve contact, prevent reverse polarity connection, and avoid falling off. Effect

Active Publication Date: 2006-09-06
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When a battery uses a liquid electrolyte, a problem occu

Method used

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no. 1 example

[0165] According to the first embodiment of the present invention, the following effects can be obtained.

[0166] The battery pack has a square or rectangular case part 1 including an open end, a battery element 4 accommodated therein, a top cover 2 and a bottom cover 3 attached to the open end of the case part 1 . The top cover 2 has concave portions 6a and 6b on both sides of one longer side. The case member 1 has cutout portions 10 a and 10 b exposing at least the concave portions 6 a and 6 b of the top cover 2 . Thus, reverse polarity connection of battery packs can be prevented without sacrificing volumetric efficiency.

[0167] The housing part 1 is composed of a flexible laminate part 1a and a rigid laminate part 1b, the shorter sides 13a and 14a of the flexible laminate part 1a being slightly smaller than the shorter sides 13b and 14b of the rigid laminate part 1b. The flexible laminated part 1 a and the rigid laminated part 1 b are stacked such that only the rigid ...

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PUM

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Abstract

The invention discloses a box-shaped or plate-shaped battery pack. For example, the battery pack includes a box-shaped or plate-shaped battery pack. The battery pack has a hard outer jacket member, a box-shaped or plate-shaped battery element, a cover, and a circuit board. The hard outer jacket member has a first opening and a second opening formed at both ends. The box-shaped or plate-shaped battery element is contained in the outer jacket member and has electrode terminals. The cover is molded from resin and is fitted to the first opening. The circuit board is connected to the electrode terminal leads and contained in the cover. At least the electrode terminal leads extends from the first opening. The cover has concave portions on both ends of one longer side. The outer jacket member has cut portions that expose at least the concave portions of the cover. At least a longer side of the cover and the outer jacket member are heat-adhered.

Description

technical field [0001] The present invention relates to a battery pack in which a battery element is covered with an outer jacket member. Background technique [0002] In recent years, with the widespread application of portable electronic devices such as notebook personal computers, mobile phones and personal digital assistants (PDAs), lithium-ion batteries with high voltage, high energy density and light weight have been widely used as power sources for these electronic devices. . [0003] When a battery uses a liquid electrolyte, there occurs a problem that the liquid electrolyte tends to leak outside the battery. In order to solve this problem, a lithium ion polymer secondary battery in which a gel-type polymer film impregnated with a polymer in a nonaqueous electrolyte solution and a lithium ion polymer secondary battery using a solid electrolyte have actually been used. [0004] The lithium ion polymer secondary battery has a cell structure. The unit cell is compose...

Claims

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Application Information

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IPC IPC(8): H01M2/06H01M2/04H01M50/147H01M50/172
CPCY02E60/12Y02E60/10
Inventor 铃木文彦高桥修山田弘幸富樫和男石井亨山平隆幸
Owner MURATA MFG CO LTD
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