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Electricity storage device and manufacturing method therefor

A technology of storage equipment and winding direction, which is applied in secondary battery manufacturing, hybrid/electric double layer capacitor manufacturing, final product manufacturing, etc., and can solve problems such as strict configuration space

Inactive Publication Date: 2018-11-23
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, restrictions on the arrangement space of power storage devices mounted in electronic devices are becoming more and more severe.

Method used

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  • Electricity storage device and manufacturing method therefor
  • Electricity storage device and manufacturing method therefor
  • Electricity storage device and manufacturing method therefor

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0038] figure 1 It is a schematic perspective view of the electrical storage device concerning 1st Embodiment. figure 2 It is a schematic perspective view of the electrode body in 1st Embodiment.

[0039] figure 1 The shown power storage device 1 may be, for example, a battery such as a rechargeable battery, a capacitor such as an electric double layer capacitor, or the like.

[0040] Such as figure 1 As shown, the electrical storage device 1 includes a casing 2 . The casing 2 has a shape other than a rectangle when viewed from above. The shape of the casing 2 in plan view may be, for example, an L-shape, an H-shape, a U-shape, a T-shape, or the like. That is, in the present invention, the top view shape of the case may be any shape as long as it is not a rectangular shape.

[0041] The housing 2 may also be made of a conductor or an insulator. The case 2 can be made of, for example, metal such as aluminum, stainless steel, copper, laminated foil, resin, or the like. ...

no. 2 Embodiment approach

[0066] Image 6 It is a schematic perspective view of the electrode body in 2nd Embodiment.

[0067] Such as Image 6 As shown, in the second embodiment, the electrode body 3 has a first wound body 31 , a second wound body 32 , and a third wound body 33 . The second winding body 32 is connected to one end of the first winding body 31 in the winding axis direction (x-axis direction), and the third winding body 33 is connected to the first winding body 31 in the winding axis direction. (x-axis direction) the other end is connected. Therefore, the electrode body 3 has a substantially U-shape in plan view. By utilizing the electrode body 3 of the present embodiment, it is possible to realize a substantially U-shaped electrical storage device in a planar view.

[0068] In addition, the electrode body 3 of the present embodiment can be obtained by using, for example, Figure 7 The laminated body 4A shown was fabricated. The laminated body 4A has a first portion 4A1 extending i...

no. 3 Embodiment approach

[0070] Figure 8 It is a schematic perspective view of the electrode body in 3rd Embodiment.

[0071] Such as Figure 8 As shown, in the third embodiment, the electrode body 3 has a first wound body 31 and a second wound body 32 . The second wound body 32 is connected to the central portion of the first wound body 31 in the winding axis direction (x-axis direction). Therefore, the electrode body 3 has a substantially T-shape in plan view. By utilizing the electrode body 3 of this embodiment, it is possible to realize an electrical storage device having a substantially T-shape in plan view.

[0072] In addition, the electrode body 3 of the present embodiment can be used, for example, Figure 9 The laminated body 4B shown was fabricated. The laminate 4B has a first portion 4B1 extending in the x-axis direction, and a second portion 4B2 extending from the center of the first portion 4B1 in the x-axis direction toward the y-axis direction perpendicular to the x-axis direction...

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Abstract

Provided is an inexpensive electricity storage device which, in a plan view, does not have a rectangular shape. This electricity storage device 1 is equipped with: a first wound body 31 formed by winding a portion of a laminate body 4 having a positive electrode 11, a negative electrode 12, and a separator 13 arranged between the positive electrode 11 and the negative electrode 12; and a second wound body 32, which is a wound body formed by winding at least a portion of the portion of the laminate body 4 not forming the first wound body 31, and the length of which in the winding axis directionand / or the position of which in the winding axis direction differs from that of the first wound body 31.

Description

technical field [0001] The invention relates to an electric storage device and a manufacturing method thereof. Background technique [0002] In recent years, miniaturization and thinning of electronic equipment are advancing. Therefore, restrictions on the arrangement space of power storage devices mounted in electronic devices have become increasingly severe. For example, there is also a desire to arrange an electrical storage device in a space that does not have a rectangular parallelepiped shape. For example, Patent Document 1 discloses an electrical storage device (battery assembly) that does not have a rectangular parallelepiped shape. The battery assembly described in Patent Document 1 has a non-rectangular shape in side view. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Application Publication No. 2014-524131 Contents of the invention [0006] The technical problem to be solved by the invention [0007] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/70H01G11/84H01M10/04H01M10/0587
CPCH01G11/24H01G11/70H01G11/84H01G11/12H01G11/82H01G13/02H01M10/0436H01M2220/30H01G11/26H01G11/52H01M10/0431Y02E60/10Y02P70/50H01M50/46H01M10/0587H01G11/62H01G11/78H01G11/86
Inventor 川合彻大塚正博
Owner MURATA MFG CO LTD
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