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Battery positive plate punching device and manufacturing method thereof

A manufacturing method and positive plate technology, applied in the direction of electrode manufacturing, etc., can solve the problems of low efficiency, lack of holes in the positive plate, etc., and achieve the effects of simple production, improved battery energy efficiency, and improved utilization rate

Active Publication Date: 2016-08-31
TIANNENG GRP JIANGSU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The positive plate is composed of a mesh positive grid and active material lead paste, and the grid design is diverse. If you want to punch hundreds of needle-like microholes on it, the efficiency of manually punching holes one by one is obviously too low, so The prior art lacks a special device for punching holes in the positive plate

Method used

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  • Battery positive plate punching device and manufacturing method thereof
  • Battery positive plate punching device and manufacturing method thereof
  • Battery positive plate punching device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take the 12Ah polar plate as an example to make the pressing plate by the above method, insert 4 needles 3 in the area corresponding to each grid of the positive grid on the pressing plate 2, so that there are 144 micro-holes in total in the 36 grids. The battery is recorded as: 4-hole / grid battery; various performance comparison tests were carried out between the 4-hole / grid battery and the conventional battery without holes, and the test results are shown in Table 1 below:

[0027] Table 1

[0028]

[0029] The experimental results show that the charge acceptance capacity of the 4-hole / grid battery is 1.2 times higher than that of the conventional battery without holes, the total water loss is reduced by 30%, and the low-temperature capacity, 3C 2 Discharge capacity and discharge time are also significantly better than conventional batteries without holes

Embodiment 2

[0031] Taking the 12Ah polar plate as an example, use the above method to make the pressure plate, and insert 5 needles 3 in the area corresponding to each grid of the positive grid on the pressure plate 2, so that there are 180 microholes in total in the 36 grids. The battery is recorded as: 5-hole / grid battery; various performance comparison tests were carried out between the 5-hole / grid battery and the conventional battery without holes, and the test results are shown in Table 2 below:

[0032] Table 2

[0033]

[0034] The experimental results show that the charge acceptance capacity of the 5-hole / grid battery is 1.4 times higher than that of the conventional battery without holes, the total water loss is reduced by 40%, and the low-temperature capacity, 3C 2 The discharge capacity and discharge time are also significantly better than conventional batteries without holes.

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Abstract

The invention discloses a punching device for an anode plate of a storage battery, and a manufacturing method of the punching device. The punching device comprises a bottom plate and a pressing plate pressed on the bottom plate, wherein a cavity same as an outer profile of an anode plate grid of the storage battery is arranged on the bottom plate; punching needles are arranged in a zone corresponding to each grille of the anode plate grid on the pressing plate in an inserting manner; needle tips of the punching needles are downwards and exposed out of the back surface of the pressing plate; locating rods are arranged on the bottom plate; and locating holes for matched inserting of the locating rods are formed in the pressing plate. The punching device is simple in structure, convenient and simple to manufacture, and easy in material taking; in a using process, the anode plate is placed into the die cavity of the bottom plate for locating, the manufactured pressing plate faces up, is inserted on the locating plate, and then is pressed down, and the needle tips distributed on the back surface of the pressing plate are used for punching; the punching needles can be recycled for many times; all micropores can be punched in the anode plate grid once; an effective action area and a utilization ratio of an active substance on the anode plate grid can be increased; and the energy efficiency of the battery can be improved.

Description

technical field [0001] The invention relates to the field of storage battery production, in particular to a device for piercing holes in positive plates of storage batteries and a manufacturing method thereof. Background technique [0002] The energy efficiency of a storage battery with a certain volume and weight depends largely on the effective area of ​​the active material on the positive plate. The larger the area of ​​action of the active material, the higher the utilization rate of the active material. For this reason, micropores of a certain depth can be pierced on the positive electrode plate during production to achieve the purpose of increasing the effective area of ​​the active material. The positive plate is composed of a net-like positive grid and active material lead paste, and the grid design is diverse. If you want to punch hundreds of needle-like microholes on it, the efficiency of manually punching holes one by one is obviously too low, so The prior art la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04
CPCH01M4/04Y02E60/10
Inventor 马换玉刘松陈飞方明学杨惠强
Owner TIANNENG GRP JIANGSU TECH