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Winding battery plate group and preparation method thereof

A battery pole group and pole group technology, which is applied in winding/folding electrodes, secondary battery manufacturing, secondary batteries, etc., can solve the problems of easy tearing, insufficient strength, and poor shock resistance of batteries, so as to improve the shock resistance , Easy to operate, guaranteed quality effect

Inactive Publication Date: 2014-08-20
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of tab structure is not strong enough, there is a phenomenon of stress concentration, and it is easy to tear under vibration, so that the shock resistance of the battery is poor.

Method used

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  • Winding battery plate group and preparation method thereof
  • Winding battery plate group and preparation method thereof
  • Winding battery plate group and preparation method thereof

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Experimental program
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Effect test

Embodiment Construction

[0016] The present invention will be further described through the embodiment of a 75Ah winding battery.

[0017] see figure 1 , in the electrode group of the wound battery, the positive electrode ear 1 and the negative electrode ear 2 are symmetrically distributed, and the centerlines of the two are located on the same diameter of the end face of the electrode group. α=60 0 . The expanded dimensions of the positive and negative grids in the pole group are as follows figure 2 , image 3 shown.

[0018] The method of making the pole group is as follows:

[0019] 1. Set the total length of the positive grid 3 and the negative grid 4 to 1250mm, the total width to 178+ lug height 13mm according to the existing process, and determine the center line positions of the 7 tabs on the positive and negative grids;

[0020] 2. Calculate the corresponding α=60 on each winding circle of the pole group 0 The arc length is the width of the 7 positive and negative tabs from the inside ...

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PUM

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Abstract

The invention discloses a winding battery pole group and a preparation method thereof, and relates to the field of a lead-acid storage battery. The positive and negative pole ears of the pole group are successively widened from inner to outer to form a fan-shaped structure with a fan angle of 550-650 degrees. The method is as follows: on the basis of the set number of circles of winding and corresponding radius, calculating the arc length, which is namely the pole ear width, of the fan angle corresponding to each circle, blanking in a cutting die, and using the existing process to prepare the pole group. The pole group can avoid the phenomenon of stress concentration around the pole ears, may not tear, can improve the battery anti-knock and large current performances, is specific in preparation method, and adapts to industrial production.

Description

technical field [0001] The invention relates to a new winding battery pole group and a manufacturing method thereof, belonging to the technical field of lead-acid batteries. Background technique [0002] The winding battery electrode group in the lead-acid battery is formed by winding the positive and negative plates, and the positive and negative tabs are respectively overlapped and symmetrically distributed after winding. After the existing positive and negative tabs are overlapped, the whole becomes a "convex" shape, that is, a step shape. The width of several tabs on the inner ring is equal, and the width of several tabs on the outer ring is equal. Usually, the width of the tabs on the inner ring is wider than that on the outer ring. The tab width is about 10mm smaller. This kind of tab structure is not strong enough, there is a phenomenon of stress concentration, and it is easy to tear under the condition of vibration, so that the anti-seismic performance of the batter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/12H01M10/14H01M2/28H01M50/541
CPCY02E60/126H01M10/0431H01M10/125H01M50/541Y02E60/10Y02P70/50
Inventor 杨鹏
Owner SHUANGDENG GRP
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