Lead-acid battery with gradient polar plates

A lead-acid battery, gradual change technology, applied in the direction of lead-acid battery, lead-acid battery electrode, lead-acid battery construction, etc., can solve the problems of unfavorable cost control, low material utilization rate, low service life, etc., and achieve charging uniformity Improve, reduce occupied volume, prolong the effect of cycle life

Pending Publication Date: 2021-03-19
ZHEJIANG NARADA POWER SOURCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of low material utilization rate, unfavorable cost control, and low service life in the prior art, the present invention provides a lead-acid battery with gradient plates, which can evenly distribute each plate when it is applied to a storage battery Utilization rate, reduce the amount of active material, reduce battery cost, and improve service life

Method used

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  • Lead-acid battery with gradient polar plates
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  • Lead-acid battery with gradient polar plates

Examples

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Effect test

Embodiment 1

[0018] A 12V20Ah power battery is prepared through a gradient plate design. The battery is designed as six 2V20Ah pole groups, and each pole group adopts a structure of 4 positive and 5 negative, that is, the pole group includes 4 positive plates 1 and 5 negative plates 2 .

[0019] like figure 1 As shown, the thicknesses of the four positive plates 1 are 2.3 mm, 2.5 mm, 2.5 mm, and 2.3 mm from left to right, that is, the thicknesses of the two positive plates 1 in the middle are both 2.5 mm.

[0020] Among them, the active material coated on the positive electrode plate 1 with a size of 2.5 mm is 94 g, and the active material coated on the positive electrode plate 1 with a size of 2.3 mm is 82 g.

[0021] Among them, the thickness dimensions of the five negative plates 2 are 1.3mm, 1.6mm, 1.7mm, 1.6mm, and 1.3mm from left to right, that is, the thickness of the middle negative plate 2 is 1.7mm.

[0022] Among them, the active material coated on the negative electrode plate 2...

Embodiment 2

[0026] A 2V300Ah power battery is prepared through a gradient plate design. The battery is designed as one pole group, and the pole group adopts a structure of 6 positive and 7 negative, that is, the pole group includes 6 positive plates 1 and 7 negative plates 2 .

[0027] Among them, the thickness of the six positive plates 1 is 4.5mm, 5.0mm, 5.5mm, 5.5mm, 5.0mm, and 4.5mm from left to right, that is, the thickness of the two positive plates 1 in the middle is 5.5mm, and the positive plates 1 on both sides are The thickness decreases from the middle to both sides.

[0028] Among them, 1000g of active material is coated on the positive electrode plate 1 of 5.5mm size, 800g of active material is coated on the positive electrode plate 1 of 4.5mm size, and 650g of active material is coated on the positive electrode plate 1 of 3.5mm size.

[0029] Among them, the thickness dimensions of the seven negative plates 2 are 2.2mm, 2.7mm, 3.0mm, 3.2mm, 3.0mm, 2.7mm, and 2.2mm from left ...

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Abstract

The invention relates to the field of lead-acid storage batteries and discloses a lead-acid battery with gradient polar plates, which is characterized in that a polar group is arranged in the lead-acid battery, the polar group comprises a positive plate and a negative plate, the thickness of the positive plate is gradually reduced by 3-15% from the middle to two sides, and the mass of an active substance of the positive plate is gradually reduced by 8-20% from the middle to two sides; thickness of the negative plate is gradually reduced from the middle to two sides in a proportion of 5%-20%, and the mass of the active substance of the negative plate is gradually reduced from the middle to two sides in a proportion of 10%-25%. The battery is advantaged in that the positive plate and the negative plate both adopt the design of thinning in proportion from the middle plate to the two side plates, correspondingly, active substances on the positive plate and the negative plate are also reduced in proportion from the middle to the two sides, the utilization rate of the active substances of each plate can be uniformly controlled, the utilization rate of each position is ensured to be approximately consistent, and the overall active substance rate of the lead-acid battery is improved; consumption of active substances is reduced, and the lead-acid battery cost is reduced; and the cycle life of the lead-acid battery can be prolonged.

Description

technical field [0001] The invention relates to the field of lead-acid storage batteries, in particular to a lead-acid battery with variable polar plates. Background technique [0002] Lead-acid batteries are widely used in backup power, new energy storage systems and electric two-wheeled vehicle power drive systems due to their advantages of good reliability, low price, and high recycling. With the continuous development of the market, the cost requirements for lead-acid batteries are increasing. How to maximize the utilization of active materials and reduce battery costs has become the main direction of lead-acid battery research. In the general lead-acid battery design, the battery capacity is mainly limited by the positive plate, usually the lead-acid battery includes a chip positive plate, a chip negative plate, a separator, the positive and negative plates are arranged at intervals, and the positive and negative plates are insulating Separators with good and strong ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/14H01M4/14
CPCH01M4/14H01M10/14Y02E60/10Y02P70/50
Inventor 陈冬苑景春戚红月丁平陈建吴贤章
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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