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Battery and manufacturing method of the battery

A manufacturing method and battery technology, applied to battery pack parts, secondary battery parts, circuits, etc., can solve problems such as wrinkling of bonding parts, bad influence on battery performance, and inability to fully maintain the airtightness of battery boxes

Inactive Publication Date: 2013-06-12
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] That is, in the conventional battery described above, when the two aluminum lamination sheets 21 and 22 are bonded together by heat welding or the like, there is a problem that wrinkles are likely to occur at the bonded portion.
If creases are formed at the bonding part, it will cause a problem that the airtightness of the battery case cannot be maintained sufficiently
As a result, the electrolyte solution leaks to the outside of the battery case, and outside air enters the battery case, causing a problem that adversely affects battery performance.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Figure 5 An exploded perspective view of the battery of Example 1 is shown in . In showing the previous battery figure 1 In the element 1 (which does not include the lead), the cups 51, 52, and the aluminum laminates 21, 22, the vertical direction (the direction in which the lead is provided) is longer than the left-right direction in the figure. However, in Embodiment 1 of the present invention, in the element 1 (which does not include lead wires), the cup-shaped covers 51, 52, and the aluminum laminated sheets 21, 22, the horizontal direction is longer than the vertical direction of the figure (the direction in which the lead wires are provided). . However, the present invention is not limited to Figure 5 In the case of element 1 etc., Figure 5 Any side length in the up-down direction and left-right direction is also acceptable.

[0084] In addition, in Example 1 of the present invention, the same as that representing a conventional battery figure 1 In compar...

Embodiment 2

[0106]After clamping the element 1 with the cup-shaped covers 51, 52, before storing in the battery case, the four corners of the two cup-shaped covers 51, 52 are bonded with the adhesive tape 8, and the same as in Example 1, except that The battery of Example 2.

[0107] exist Figure 4 3 shows a diagram showing the four corners of the two cup-shaped covers 51 and 52 bonded with the adhesive tape 8 with the direction in which the positive electrode lead terminal 3 is drawn out as the front in the battery of Example 2. from Figure 4 It can be seen that the four corners of the two cups 51 and 52 are fixed by the tape and pressed by the adhesive tape 8 . As a result, the four corners of the two cups 51 and 52 bend and come into contact with each other. Since the central parts of the four sides of the square cups 51 and 52 are not fixed by the tape, they are not compressed like the four corners. Thus, at the central portion thereof, the two cups 51, 52 are separated from eac...

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Abstract

The invention provides a battery and a manufacturing method thereof. A battery with a flexible sheet-made battery case, and plate-shaped element is provided with two cover parts each covering two biggest faces of the element; the flexible sheet is provided with a sheet (A) part located on the position of one of the two cover parts, and a sheet (B) part located at the position of another part; a bonding part at the position corresponding to at least one lateral face between the two faces, to bond the sheet (A) part laminated with the sheet (B) part. The distance between the tow cover parts is shortened by pressing the element and the two cover parts through the battery box.

Description

technical field [0001] The present invention relates to a battery in which an element (electricity storage element or energy storage element) is accommodated in a battery case produced using a flexible sheet such as a laminated sheet coated with a resin layer on both sides of aluminum foil. Background technique [0002] Conventionally, in portable electronic devices, thin and lightweight batteries have been used by using aluminum laminated sheets for battery cases housing components. The aluminum laminate is provided with resin layers on both sides of the aluminum foil. Unlike hard materials such as aluminum or iron plates used in metal cans of cylindrical or prismatic battery cases, this aluminum laminated sheet is a type of so-called flexible sheet because it bends easily even with a small force. [0003] In the case of using a film to make a battery case using a battery case, as shown in International Patent Application WO2005 / 045983 (hereinafter referred to as Patent Do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M10/02
CPCY02E60/12Y02E60/10
Inventor 铃木勋根本圣治平田稔
Owner GS YUASA INT LTD
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