Battery pack with resin integrated substrate and vent
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKatsumi Kozu, Takeshi Ishimaru, Satoshi Kataoka, Koichi Toriyama, Iichiro Mori
Life of this patent
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Abstract
Constructing a battery pack by: providing a resin sheet (40) to cover a release opening (20a) of a safety vent (20) formed on a sealing plate (23); integrating a rechargeable battery (2) and a circuit substrate (3) with a primary molding (11) by filing a resin between the rechargeable battery (2) and the circuit substrate (3); and then forming a secondary molding (12). In such constructed battery pack, an ejected gas, at the operation of the safety vent (20) of the battery pack, is externally released through an interface between the resin and metal.
Claims11
A battery pack comprising:
- a rechargeable battery including a battery case having an end aperture and accommodating elements for electromotive force;
- a metal sealing plate sealing the end aperture and having a sealing plate surface facing outward from the battery case;
- a safety vent formed by a release opening in the metal sealing plate for externally releasing internal abnormal pressure of the battery case;
- a substrate having external terminals and having a substrate surface disposed spaced from the sealing plate surface and positioned opposing the sealing plate surface;
- the sealing plate surface including circuit components mounted thereon;
- a resin molding filled and molded between and bonded via said molding to the sealing plate surface, the substrate surface and the components on the substrate surface;
- and
- the resin molding being molded with filled resin and and forming an operating space the safety vent.
Dependencies are inferred from the claim text.