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Plate grid of negative plate for lead-acid storage battery

A technology of lead-acid batteries and negative plates, applied in the direction of electrode carriers/collectors, etc., can solve the problems of poor charging and receiving capacity of active materials, small bonding surface of grids and active materials, weight reduction and environmental protection, etc., to achieve benefits Environmental protection, negative electrode sulfation overcoming, weight reduction effect

Inactive Publication Date: 2016-01-27
SHUANGDENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing negative electrode grid includes tabs and frames, all of which are made of lead alloy. The bonding surface between the grid and the active material is small, the resistance is large, and the charging and receiving ability of the active material is poor, which affects the service life of the battery.
Moreover, the existing grid uses a large amount of lead, which is not conducive to weight reduction and environmental protection

Method used

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  • Plate grid of negative plate for lead-acid storage battery
  • Plate grid of negative plate for lead-acid storage battery
  • Plate grid of negative plate for lead-acid storage battery

Examples

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Embodiment Construction

[0011] Referring to the accompanying drawings, the conductive carbon fiber felt 1 is welded together with the lead alloy rib 2, the rib 2 is embedded on the fiber felt 1, and the tab 3 is exposed (such as figure 1 ), in this example, the conductive carbon fiber felt is polyacrylonitrile-based carbon felt, with a grammage of 120g / ㎡.mm and a thickness of 2-4mm, which is pressed by winding and interwoven short polyacrylonitrile fibers. The tabs and the lead alloy ribs are made of lead-tin alloy, and the ribs 2 are staggered into rectangles (such as figure 2 ), the vertical spacing is 8mm, the horizontal spacing is 15mm, and the thickness is 2-4mm. The size of the grid is [thickness*width*height (total height)]3*146*130(150), or ribs 4 are staggered into a rhombus (such as image 3 ). Utilize the negative plate produced by the present invention to replace the negative plate of the original battery into several 12V60Ah (L2) starter batteries, the weight of the battery has droppe...

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Abstract

The invention provides a plate grid of a negative plate for a lead-acid storage battery. The plate grid comprises a tab and a frame, the improvement is that the frame is formed by welding aluminum alloy ribs and a conductive carbon fiber felt, the tab is exposed, the conductive carbon fiber felt is a polyacrylonitrile-based carbon felt, and the gram weight of the conductive carbon fiber felt is 100 to 1520 g / m<2>.mm. The plate grid is few in lead dosage, and is beneficial for weight reduction and environmental protection; particularly during the fabrication of the negative plate, carbon fiber in the conductive carbon fiber felt is in close contact with an active substance, large contact area, low resistance, high utilization rate of the active substance and favorable charging reception are achieved, sulfation is overcome, and the service lifetime of the battery is effectively prolonged.

Description

technical field [0001] The invention relates to a lead-acid storage battery grid structure, in particular to a negative plate grid structure, belonging to the field of lead-acid storage batteries. Background technique [0002] With its excellent cost performance, lead-acid batteries are widely used in the fields of backup power supply, energy storage and power supply. [0003] Although the lead-acid battery technology is quite mature, there are still shortcomings in the lead-acid battery, especially the battery life is not long. The sulfation of the active material of the negative electrode is a common end-of-life failure mode of the battery. This failure mode is closely related to the long-term undercharging of the negative electrode, and the grid structure has a direct impact. The existing negative electrode grid includes tabs and frames, both of which are made of lead alloy. The bonding surface between the grid and the active material is small, the resistance is large, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/73
CPCH01M4/73Y02E60/10
Inventor 陆亚山
Owner SHUANGDENG GRP
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