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Battery and method of manufacturing the battery

A manufacturing method and battery technology, applied in secondary battery manufacturing, battery pack parts, final product manufacturing, etc., can solve problems such as separation of circuit board and secondary battery, resin peeling, resin and secondary battery buckle, etc.

Inactive Publication Date: 2010-04-14
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in the above-mentioned conventional examples, there is no structure for snapping the resin to the secondary battery, and there is a risk that the resin will peel off and the circuit board and the secondary battery will be separated when an impact such as dropping is received. It may be disassembled and used out of curiosity, and it may become a case of abnormal use of the secondary battery

Method used

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  • Battery and method of manufacturing the battery
  • Battery and method of manufacturing the battery
  • Battery and method of manufacturing the battery

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Embodiment Construction

[0041] Embodiments of the present invention will be described below with reference to the drawings for understanding of the present invention. In addition, the embodiment shown below is an example which actualized this invention, and does not limit the technical scope of this invention.

[0042] In the example shown in this embodiment, a circuit board constituting a battery protection circuit and the like is filled with resin and integrated with a flat rectangular lithium-ion secondary battery to form a battery pack suitable for a mobile phone. Battery packs suitable for mobile phones are not only required to have small size, light weight, and thin thickness, but also have high energy density suitable for multi-functionality, and mechanical strength that can withstand the impact caused by dropping, etc., which is inevitable as a portable device. The structure that is not easily disassembled, and the safety function of protecting the secondary battery from short circuit, overch...

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Abstract

A circuit substrate ( 3 ) being electrically connected to a rechargeable battery ( 2 ) is arranged upon a sealing plate ( 23 ) with a gap therebetween and united with the rechargeable battery ( 2 ) byfilling resin in the gap. A primary mold ( 11 ) formed by the resin is firmly retained by undercut portions formed in engaging protrusions ( 26 ). The engaging protrusions ( 26 ) may be formed by welding separate engaging members ( 126, 126 a, 126 b, 126 c, 66, 68 ).

Description

technical field [0001] The present invention relates to a battery in which an engaging portion for snapping resin is formed on any outer surface of the battery in order to integrally fix a circuit board constituting a battery protection circuit and the like, an external connection terminal, etc., with the battery to form a battery pack and methods of manufacture thereof. Background technique [0002] The miniaturization, thinning, and multi-functionalization of portable electronic devices such as mobile phones and PDAs are progressing very rapidly. Correspondingly, batteries used as their power sources are required to be small and thin to achieve high capacity. As a battery that can achieve a large capacity in a small size, it is more effective to use a lithium-ion secondary battery. Among them, a flat rectangular battery is suitable for the thinning requirements of equipment, and as a secondary battery that can be used repeatedly, it is more suitable for portable electronic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M2/02H01M2/04H01M10/04
CPCH01M2/1038H01M10/425Y10T29/49108Y02E60/10H01M50/216Y02P70/50H01M50/20H01M50/10
Inventor 高津克巳石丸毅片冈智志鸟山幸一水田雅博金田正明增本兼人
Owner PANASONIC CORP
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