Module

Inactive Publication Date: 2005-02-24
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009] A module structure proposed in the present invention is that a four-side sealing section of an existing flat laminate film secondary battery having a laminate film as an armored body is mechanically cramped from upside and downside by module covers via sealing accessory plates. With

Problems solved by technology

However, the improvement in fusion bonding performance of the laminate film requires development cost as well as a certain length of time, and the extension of the fusion bonding width re

Method used

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Example

[0034] In the following, Example 1 of the present invention is described using FIG. 8. First, an ABS resin was employed as the material for the module. The dimensions of the top and bottom covers 1 and 2 were W105 mm×D170 mm×T7 mm (thickness: 5 mm), and a bolt hole for fixing was provided at each side. The sealing accessory plate 4 was made of an SUS material and the dimensions thereof were 90 mm×140 mm×3 mm while the flame width thereof was 10 mm (internal hollow section: 70 mm×120 mm), and a groove of 2 mm wide×1 mm deep was formed in the flame width center of each of the top and under surfaces of the sealing accessory plate. Further, a protrusion for fixing a bolt was provided at each side of the sealing accessory plate 4. As the elastic rubber, silicone rubber of 2 mm per side was employed and placed in the flame grooves of the sealing accessory plate 4 to complete the sealing accessory plate 4 of the present invention.

[0035] As the flat laminate film secondary battery 3 having...

Example

[0038] Next, Example 2 is described using FIG. 7. First, a glass epoxy resin was employed as the material for the module. The glass epoxy resin is one of those epoxy resins having high rigidity compared to other epoxy resins. The dimensions of the module top and bottom covers 1 and 2 were W105 mm×D170 mm×T7 mm (thickness: 5 mm), as those in Example 1. The sealing accessory plate 6 was made of elastic rubber alone, and as the material for the sealing accessory plate 6, silicone rubber was employed. The dimensions thereof were 90 mm×140 mm×4.5 mm while the flame width thereof was 10 mm (internal hollow section: 70 mm×120 mm). As the flat laminate film secondary battery 3 having a laminate film as an armored body, the same one as in Example 1 was employed.

[0039] In the above-mentioned construction, as illustrated in FIG. 7, the flat laminate film secondary batteries 3 were laminated via the sealing accessory plates 6 (silicone rubber with an internal hollow section) and the silicone t...

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Abstract

A flat secondary battery having a fusion-bonded sealing type laminate film as an armored body tends to be inferior in sealing reliability to a flat secondary battery having a welded sealing type can as an armored body, due to a difference in sealing method between the two batteries. Therefore, there has been a large challenge of finding the way to make the sealing reliability of the laminate film secondary battery closer to that of the can type secondary battery. The sealing reliability is improved by further increasing a sealing force without taking any measure to the existing laminate film secondary battery, in such a manner that the fusion bonding area of the existing laminate film secondary battery is sandwiched from upside and downside to be cramped from outside so as to mechanically add a sealing force from outside to the sealing force of the laminate film itself.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] The present application is a continuation of International Application No. PCT / JP03 / 06934, which was filed on Jun. 2, 2003, which is herein incorporated by reference.TECHNICAL FIELD [0002] The present invention relates to a module constructed using a flat laminate film secondary battery, and more particularly to a structure for cramping the flat laminate film secondary battery. BACKGROUND ART [0003] Generally, a metal can type secondary battery is the most dominant type of secondary battery, and in many cases, this battery is produced in such a manner that, after inclusion of a power generating element and an electrolyte in a metal can, a step of extracting electrodes is performed and lastly, a metal cover is laser welded. Thus, the can type secondary battery has a high sealing property, being advantageous in having a very few problems in terms of leakage of an electrolyte from a metal can to outside, even in a long-term use. Meanwhile, ...

Claims

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Application Information

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IPC IPC(8): H01M6/42H01M10/04H01M50/124H01M50/133
CPCH01M2/0275H01M10/0431H01M6/42H01M2/08Y02E60/10Y02P70/50H01M50/124H01M50/133
Inventor KANETA, HIROSHI
Owner NEC CORP
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