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Electrochemical device

An electrochemical and electrode sheet technology, which is applied in the field of electrochemical devices to achieve the effect of suppressing the drop in withstand voltage characteristics

Inactive Publication Date: 2014-03-12
TAIYO YUDEN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent Document 2 discloses an element using a U-shaped collector layer as an electric storage device for an electric double layer capacitor. However, since the two polarized electrode layers formed on the collector layer are separated, even With this power storage element, it is also difficult to avoid the occurrence of the problem

Method used

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no. 1 approach

[0096] Figure 1 to Figure 15 An embodiment in which the present invention is applied to an electric double layer capacitor is shown. The electric double layer capacitor includes an electric storage element 10 , a pair of lead wires 20 connected to the electric storage element 10 , and a package 30 that encloses the electric storage element 10 so that a part of the pair of lead wires 20 is exposed.

[0097] In addition, in the following description, for convenience of description, the figure 1 The front, inner, right, left, bottom, and top of (A) are referred to as up, down, front, rear, left, and right, respectively, and directions corresponding to these directions in other figures are referred to as up, down, front, rear, left and right.

[0098] First, quote Figure 2 to Figure 9 , the structure and manufacturing method of the storage element 10 will be described.

[0099] When fabricating the storage element 10, prepare figure 2 (A) and figure 2 The first electrode...

no. 2 approach

[0151] Figure 17 to Figure 30 An embodiment in which the present invention is applied to a lithium ion capacitor is shown. The lithium ion capacitor includes a power storage element 40 , a pair of lead wires 20 connected to the power storage element 40 , and a package 50 that encloses the power storage element 10 so that a part of the pair of lead wires 20 is exposed.

[0152] In addition, in the following description, for convenience of description, the Figure 17 The front, inside, right, left, bottom and top of (A) are called top, bottom, front, back, left and right, respectively, and the directions corresponding to these directions in other figures are divided into top, bottom, front , back, left and right. In addition, since the structure of the lead wire 20 and the sealing reinforcement material 21 is the same as that described in 1st Embodiment, it demonstrates using the same code|symbol.

[0153] First, quote Figure 18 to Figure 25 , the structure and manufacturing...

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Abstract

Provided is an electrochemical device which is capable of suppressing problems affecting the capacitor element as a whole, such as a drop in its voltage resistance characteristics and shortening of its life. The capacitor element (10) is constituted of a laminate formed by superposition of a first electrode sheet (11), a separation sheet (14), a second electrode sheet (12), a separation sheet (14), and a third electrode sheet (13) in the named order from the bottom, and folding the laminate along a reference line VSL to double the laminate. In the resulting folded laminate, a collector electrode layer (11a) and polarizable electrode layer (11b) of the first electrode sheet (11), the collector electrode layer (12a) and polarizable electrode layer (12b) of the second electrode sheet (12), the collector electrode (13a) and polarizable electrode layer (13b) of the third electrode sheet (13), and the two separation sheets (14) are connected to each other at the respective folded locations.

Description

technical field [0001] The present invention relates to an electrochemical device including a structure in which a power storage element is enclosed in a package. Background technique [0002] An electric storage element of an electric double layer capacitor, which is a typical electrochemical device of this type, generally has the following layer structure (refer to Patent Document 1), and the layer structure is composed of a collector layer, a polarized electrode layer, a separator, a polarized The electrode layer, the collector layer...the collector layer, the polarized electrode layer, the separator, the polarized electrode layer, and the collector layer are sequentially overlapped. That is, if it is considered that one charge-discharge cell is constituted by the collector layer, the polarized electrode layer, the separator, the polarized electrode layer, and the collector layer, the storage elements can be electrically connected in parallel with one pair of lead wires. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/06H01G11/28H01G11/52H01G11/66H01G11/70H01G11/74H01M10/04H01G11/10H01G11/22H01G11/68H01G11/72
CPCY02E60/12H01G11/52H01G11/28H01M10/04H01G9/02H01G9/058H01G9/016H01G11/66Y02E60/13H01G11/74H01G11/70H01M10/052H01M10/058Y02E60/10Y02P70/50H01G11/12H01G11/22
Inventor 照井俊也秋叶朋史石田克英萩原直人名仓哲中川心田口智洋
Owner TAIYO YUDEN KK
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