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Nickel-hydrogen battery and manufacturing method thereof

The invention relates to a technology of nickel-hydrogen battery and manufacturing method, which is applied in the manufacture of nickel storage battery, alkaline storage battery, secondary battery, etc., and can solve the problems of hindering the high-current discharge performance of the battery and the large internal resistance of the battery, so as to improve the high-current discharge performance, The effect of protecting the environment and improving the charging efficiency

Inactive Publication Date: 2014-12-17
SHENZHEN BETTERPOWER BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing nickel-metal hydride batteries, the current of the positive electrode is transmitted through the tab, and the negative electrode directly contacts the bottom of the battery case to conduct electricity. This structure leads to a large internal resistance of the battery, which hinders the improvement of the battery’s high-current discharge performance.

Method used

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  • Nickel-hydrogen battery and manufacturing method thereof
  • Nickel-hydrogen battery and manufacturing method thereof
  • Nickel-hydrogen battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Hunan Jintianfu Cobalt Nickel is selected as the positive electrode active material, 89 wide nickel foam is selected as the positive electrode substrate, and a groove is pressed in the middle part of the whole 89 wide nickel foam to form a reserved non-coated positive electrode material cropping area. Then, except for the cutting area, the positive electrode material is evenly coated on the whole piece of 89 wide foamed nickel, and the whole piece of 89 wide foamed nickel is pressed. Finally, from the middle part of the reserved area not coated with positive electrode material, the pressed whole piece of 89 wide foamed nickel is divided into two, so as to obtain two positive plates made of 89 wide nickel foamed at one time, and Both positive electrode sheets are formed with edge portions; cobalt-coated nickel, calcium oxide, yttrium oxide and polytetrafluoroethylene are mixed uniformly with 90, 3, 1 and 3 parts by weight respectively to obtain 6.55g positive electrode m...

Embodiment 2

[0111] Example 2: AA1500 conventional Ni-MH battery

[0112] Hunan Jintianfu Cobalt Nickel is selected as the positive electrode active material, 89 wide nickel foam is selected as the positive electrode substrate, and a groove is pressed in the middle part of the whole 89 wide nickel foam to form a reserved non-coated positive electrode material cropping area. Then, except for the cutting area, the positive electrode material is evenly coated on the whole piece of 89 wide foamed nickel, and the whole piece of 89 wide foamed nickel is pressed. Finally, from the middle part of the reserved area not coated with positive electrode material, the pressed whole piece of 89 wide foamed nickel is divided into two, so as to obtain two positive plates made of 89 wide nickel foamed at one time, and Both positive electrode sheets are formed with edge portions; cobalt-coated nickel, calcium oxide, yttrium oxide and polytetrafluoroethylene are mixed uniformly with 98, 2, 3 and 2 parts by w...

Embodiment 3

[0115] Example 3: D9000 conventional Ni-MH battery

[0116] Hunan Jintianfu Cobalt Nickel is selected as the positive electrode active material, 99 wide nickel foam is selected as the positive electrode substrate, and a groove is pressed in the middle part of the whole 99 wide nickel foam to form a reserved non-coated positive electrode material cropping area. Then, except for the cutting area, the positive electrode material is evenly coated on the whole piece of 99 wide foamed nickel, and the whole piece of 99 wide foamed nickel is pressed. Finally, from the middle part of the reserved area where the positive electrode material is not coated, the pressed whole piece of 99 wide foamed nickel is divided into two, so as to obtain two positive plates made of 99 wide nickel foamed at one time, and Both positive electrode sheets are formed with edge portions; cobalt-coated nickel, calcium oxide, yttrium oxide and polytetrafluoroethylene are mixed uniformly with 80, 1, 1 and 3 par...

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Abstract

The invention discloses a manufacturing method of a nickel-hydrogen battery. The manufacturing method comprises a positive plate manufacturing process, a negative plate manufacturing process, a rolling process, a placement process, an electrolyte injection process and a seal process. A diaphragm is arranged between a positive plate and a negative plate. A turnup edge of the positive plate stretches out of the upper end of the diaphragm and a raised part of a negative plate stretches out of the lower end of the diaphragm so that the plates are rolled together to form a cell. The upper end of the cell is connected to a battery cap by a current collector disc. The nickel-hydrogen battery comprises the positive plate, the negative plate, the diaphragm sandwiched between the positive plate and the negative plate, the battery cap and a battery case. The turnup edge of the positive plate stretches out of the upper end of the diaphragm and is bent by pressing to reach to the upper end surface of the cell. The upper end of the cell is electrically connected to the battery cap by the current collector disc. The manufacturing method is convenient for operation and batch production. The nickel-hydrogen battery has high charging efficiency, good heavy current discharge performances and excellent dynamic performances.

Description

technical field [0001] The invention belongs to the field of energy storage batteries, and more specifically relates to a nickel-metal hydride battery and a manufacturing method thereof. Background technique [0002] With the rapid development of electronic products, portable electronic mobile devices are widely used. With the popularization of electronic mobile devices, there is an increasing demand for secondary batteries used in them that have low environmental pollution and can be used repeatedly. This type of secondary battery that is common in daily life is the nickel metal hydride battery. Due to the characteristics of environmental protection, high charge and discharge current, and good safety, the development and research of nickel-hydrogen batteries has always been the focus of research in the field of energy storage batteries in recent years. However, in the existing nickel-metal hydride batteries, the current of the positive electrode is transmitted through the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/28H01M10/30
CPCH01M10/286H01M10/30H01M50/538Y02E60/10Y02P70/50
Inventor 赵顺昌
Owner SHENZHEN BETTERPOWER BATTERY
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