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Electrode and manufacture method thereof

An electrode manufacturing and electrode technology, applied in the field of electrode sheets and their manufacturing, can solve the problems of low battery capacity, easy short circuit, and large fluctuation of battery internal resistance, so as to ensure battery capacity, improve flexibility, and avoid low battery capacity. Effect

Inactive Publication Date: 2011-06-08
SHENZHEN EPT BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the battery produced in this way has low capacity, is prone to short circuit, and the internal resistance of the battery fluctuates greatly.

Method used

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  • Electrode and manufacture method thereof
  • Electrode and manufacture method thereof
  • Electrode and manufacture method thereof

Examples

Experimental program
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Effect test

specific Embodiment

[0039] A specific embodiment: making capacity is the AA Ni-MH battery of 2500mAh, press image 3 The process shown produces two electrode sheets 110 and 120 with thicknesses of 0.3mm and 0.4mm respectively (in the prior art, AA2500mAh batteries are produced, and the thickness of a single nickel electrode is 0.7mm), these two electrode sheets The total amount of filled positive electrode active materials of 110 and 120 is equal to the amount of filled positive electrode active materials used to make AA2500mAh battery monolithic nickel electrodes in the prior art. Under the condition that the surface density of foamed nickel and the length and width of the electrode sheet are fixed, compared with the prior art, the amount of positive electrode active material filled in the electrode sheets 110 and 120 is smaller than that of a single nickel electrode, so the two made The flexibility of electrode sheet 110 and 120 will be very good, then, according to figure 2 After the relati...

Embodiment

[0041] Embodiment: adopt the present invention to make the battery of 10000 AA2500mAh

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Abstract

The invention discloses an electrode and a manufacture method thereof. The electrode comprises at least two parallel electrode plates, and each electrode plate has a pore structure in which an electrode active substance is filled. The electrode has the advantages that the flexibility of the electrode plate is greatly improved; thus, in the coiling process, the electrode plate has small possibility of cracking or breaking so as to avoid low battery capability; and meanwhile, micro short circuit because of power falloff has small possibility of formation, the battery short circuit caused by that burrs pierce the membrane has small possibility of formation, and large internal resistance fluctuation of the battery can be avoided.

Description

technical field [0001] The invention relates to an electrode sheet and a manufacturing method thereof. Background technique [0002] At present, rechargeable batteries with nickel electrodes as the positive electrode, such as nickel-cadmium batteries, nickel-hydrogen batteries and nickel-zinc batteries, are favored by people because of their high capacity, high power, and no pollution. They are an important part of today's secondary batteries. One of the directions of development. [0003] The traditional winding nickel battery is to wind a single positive electrode, a separator and a single negative electrode into a cylinder and put it in the steel shell of the battery. However, the battery produced in this way has low capacity, is prone to short circuit, and the internal resistance of the battery fluctuates greatly. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides an electrode and a manufacturing method t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/32H01M4/26H01M4/80
CPCY02E60/124Y02E60/10
Inventor 李延清魏娜彭东方王守军王红玲
Owner SHENZHEN EPT BATTERY
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