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Electrode plate, stacked electrode assembly, and batteries

An electrode group, stacked technology, applied in the direction of electrode carrier/collector, secondary battery, battery components, etc., can solve problems such as complicated operations and deviation of current collection efficiency

Active Publication Date: 2014-04-09
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when a stacked electrode group is housed in a battery case, the current collector terminals of the plurality of positive electrode plates are connected to a common current collector plate, and the current collector plate is welded to the cover of the battery case, Alternatively, the collector terminals of each positive plate are welded to the cover, so that on each positive plate, the current collection efficiency deviates
In addition, the work of welding the current collector terminal of each positive electrode plate to the current collector or the battery case becomes complicated.

Method used

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  • Electrode plate, stacked electrode assembly, and batteries
  • Electrode plate, stacked electrode assembly, and batteries
  • Electrode plate, stacked electrode assembly, and batteries

Examples

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Embodiment Construction

[0068] One embodiment of the cylindrical battery of the present invention will be described below with reference to the drawings.

[0069] The cylindrical battery 100 of the present embodiment is, for example, an alkaline storage battery such as a nickel-cadmium storage battery or a nickel-hydrogen storage battery. Specifically, it can be, for example, a low-capacity type with a capacity of 1800 mAh or less in a single form, or a capacity of 650 mAh or less in a single form, such as figure 1 as well as figure 2 As shown, it has: a bottomed cylindrical metal battery case 2; disposed in the battery case 2, a substantially rectangular parallelepiped electrode group composed of a positive electrode plate 31, a negative electrode plate 32, and a separator 33 3.

[0070] The battery case 2 is a bottomed cylinder that has been nickel-plated, such as figure 1 As shown, the upper opening is sealed by the sealing body 5 through the insulator 4 . In addition, the current collector t...

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Abstract

The purpose of the present invention is to prevent inconsistency in current collection efficiency by integrating current collector terminals using two active material retention sections which retain active materials, to simplify welding operations by reducing the number of current collector terminals, and to simplify the operation of stacking multiple electrode plates. Specifically, the present invention provides a stacked electrode assembly (3) including a positive plate (31), a negative plate (32) and a separator (33). The positive plate (31) is formed substantially in a U-shape such that two active material retention sections (31B) for retaining cathode active materials are arranged opposite each other, and the negative plate (32) is formed substantially in a U-shape such that two active material retention sections (32B) for retaining anode active materials are arranged opposite each other. The positive plate (31) and the negative plate (32) are stacked such that at least one active material retention section (31B) in the positive plate (31) is interposed between the two active material retention sections (32B) in the negative plate (32).

Description

technical field [0001] The invention relates to a laminated electrode group, a manufacturing method thereof and a battery. Background technique [0002] As a conventional cylindrical battery, as shown in Patent Document 1, there is a technique of accommodating a cylindrical electrode group in a cylindrical battery case, and the cylindrical electrode group is sandwiched by a belt-shaped separator. It is formed by winding a strip-shaped positive electrode plate and negative electrode plate in a spiral shape. [0003] However, in the technique of spirally winding the strip-shaped positive electrode plate, negative electrode plate, and separator, winding displacement of the positive electrode plate and the negative electrode plate occurs during the winding process. Therefore, a desired battery capacity cannot be obtained in a cylindrical battery, and problems such as causing an internal short circuit arise. [0004] prior art literature [0005] patent documents [0006] Pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M4/80H01M10/04H01M50/466H01M50/54H01M50/543
CPCH01M2/30H01M2/18H01M2/0227H01M2/022H01M10/0459H01M4/80H01M10/0431H01M6/02Y02E60/12H01M10/0422H01M10/0454H01M2/266H01M50/107H01M50/54H01M50/543H01M50/466Y10T29/49108H01M10/045Y02E60/10Y02P70/50H01M50/56H01M4/78
Inventor 金本学挂谷忠司儿玉充浩
Owner GS YUASA INT LTD
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