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Method of manufacturing battery pack

A technology for battery packs and secondary batteries, which is used in battery temperature control, battery pack components, secondary batteries, etc.

Inactive Publication Date: 2007-12-19
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hot-melt resin has a lower melting temperature than other molding resins and is easy to handle, but the temperature is still much higher than the melting temperature of the temperature fuse
When the hot-melt resin directly contacts the temperature fuse, the temperature fuse must be blown, so that the battery pack cuts off the circuit and does not work

Method used

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  • Method of manufacturing battery pack
  • Method of manufacturing battery pack
  • Method of manufacturing battery pack

Examples

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Embodiment Construction

[0031] best practice

[0032] Hereinafter, embodiments of the present invention will be described with reference to the drawings for understanding of the present invention. Embodiment shown below is an example which actualizes this invention, and does not limit the technical scope of this invention.

[0033] This embodiment shows an example in which a battery pack used in a mobile phone is configured using a flat prismatic lithium ion secondary battery. Battery packs for mobile phones are required to have not only small size, light weight, and thin thickness, but also high energy density suitable for high functionality, mechanical strength capable of resisting impacts such as unavoidable drops as portable devices, and a structure that is difficult to disassemble , Security function to protect the secondary battery from short circuit, overcharge and high temperature. In such a manner that these necessary conditions are satisfied, the battery pack shown below is constructed. ...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To provide a battery pack having a structure in which a heat sensitive element is prevented from thermal breakage by a filled resin when the battery pack is constructed by integrating a secondary battery and a circuit board with a resin molding.SOLUTION: A heat insulating sheet 16 is arranged covering a thermal fuse 10 which is installed on a sealing plate 23 of the secondary battery 2, thereby, heat of the resin that is filled between the secondary battery 2 and the circuit board 3 and becomes a primary molded body 11 is shielded by the heat insulating sheet 16, and thermal breakage of the thermal fuse 10 is prevented.

Description

technical field [0001] The invention relates to a battery pack and its manufacturing method. The battery pack is filled with resin to integrate the constituent units into one body to achieve miniaturization and improved firmness, so as to be suitable for the battery power source of small portable electronic equipment. Background technique [0002] Remarkable progress has been made in miniaturization or thinning of portable electronic devices such as mobile phones and PDAs, and further enhancement of functions. Accordingly, the battery used as the power source is required to be miniaturized, thinner, and higher in capacity. Lithium-ion secondary batteries are effective as batteries that can be miniaturized and have high capacity. Among them, flat and square ones are suitable for devices with thinner thicknesses, and their use as reusable secondary batteries in portable electronic devices is increasing. [0003] The above-mentioned lithium ion secondary battery has a high ene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M2/34H01M10/60H01M10/623H01M10/637H01M10/647H01M10/658
CPCY02E60/12Y02E60/10
Inventor 高津克巳石丸毅大泽善树片冈智志森猪一郎鸟山幸一水田雅博近田辰久
Owner PANASONIC CORP
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