A method for improving the anti-seismic performance of power nickel-metal hydride batteries

A technology of nickel-hydrogen battery and anti-vibration performance, applied in the direction of nickel storage battery, battery electrode, secondary battery, etc., can solve problems such as battery failure, and achieve the effect of preventing short circuit, avoiding potential safety hazards, and smooth surface

Active Publication Date: 2020-06-09
LIAONING JIUYI ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies of the existing technology, the present invention provides a method for improving the shock resistance of the power nickel-hydrogen battery, mainly aimed at the low-capacity empty-electrode group power-type nickel-hydrogen battery, and effectively solves various potential safety hazards that lead to battery failure in the prior art , greatly improving the shock resistance of low-capacity empty-electrode Ni-MH batteries

Method used

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  • A method for improving the anti-seismic performance of power nickel-metal hydride batteries
  • A method for improving the anti-seismic performance of power nickel-metal hydride batteries
  • A method for improving the anti-seismic performance of power nickel-metal hydride batteries

Examples

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Embodiment 1

[0044] Embodiment 1 Low-capacity power battery D model

[0045] Such as figure 1 As shown, the low-capacity power battery type D and the capacity of 3.0Ah battery are taken as an example to implement the description. Adopt the method of the present invention to improve the anti-seismic performance of power type nickel-metal hydride battery, its preparation method is as follows:

[0046] 1) Fabrication of battery high-strength positive plate 2

[0047] To produce a D-type power battery with a capacity of 3.0Ah, the weight of the positive electrode powder is designed to be 12g, and the size of the positive electrode is designed to be 150mmx50mmx0.595mm.

[0048] Selection of positive electrode binder: use compound CMC binder. Specifically: choose 1% concentration of low viscosity (viscosity is 300-400mpa.s) CMC (preferred model is WS-C), 1% concentration of high viscosity (viscosity is 2000-2200mpa.s) CMC (preferred model is 2200 ); wherein, 1% concentration of low-viscosity...

Embodiment 2

[0072] Example 2 Battery Vibration Test

[0073] Fully charge the battery of Example 1 after welding cap-liquid injection-sealing-formation-aging-activation-sorting. Test the fully charged battery according to the test method of the vibration performance of the battery in the national standard IEC62133 "Safety Requirements for Portable Sealed Secondary Single Batteries and Batteries Made of Them Used in Portable Devices", and measure 20 batteries after the test Battery voltage, internal resistance, observe the appearance and dissect the battery.

[0074] After testing the batteries produced in the examples, it was found that the voltage and internal resistance of the batteries did not change before and after the test, and the cells inside the batteries did not shake. After dissecting 5 batteries, it was found that there was no accumulation of positive electrode powder on the bottom of the cells and on the upper part of the negative current collector. There is no powder fallin...

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Abstract

The invention discloses a method for improving the shock resistance of a power nickel-hydrogen battery, which is improved from the following aspects: (1) preparing a high-strength electrode plate; (3) The negative electrode current collector adopts the horseshoe-shaped design of the center gap; (4) The positive electrode protection ring with the side wall thinning and heightened design is adopted on the positive electrode current collector at the top of the cell. It effectively solves various potential safety hazards that lead to battery failure in the prior art, and greatly improves the shock resistance of low-capacity empty electrode group nickel-metal hydride batteries.

Description

technical field [0001] The invention relates to the field of nickel-hydrogen batteries, in particular to a method for improving the shock resistance of a power nickel-hydrogen battery, especially a low-capacity power nickel-hydrogen battery. Background technique [0002] In recent years, with the continuous development and growth of my country's small household appliance market, as a provider of energy and power for small household appliances, nickel-hydrogen batteries, especially power-type nickel-hydrogen batteries (commonly used power-type nickel-hydrogen batteries are SC type, C type and D type) type) demand is also increasing. At present, power Ni-MH batteries are divided into high-capacity power Ni-MH batteries, whose capacity is 2.5Ah and above for SC-type Ni-MH batteries, 4.0Ah and above for C-type Ni-MH batteries, and 5.0Ah and above for D-type Ni-MH batteries. The above and low-capacity power Ni-MH batteries have a capacity of less than 2.5Ah for SC-type Ni-MH batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M2/10H01M2/18H01M4/26H01M4/66H01M4/78H01M4/80H01M10/28H01M10/30
CPCH01M4/26H01M4/661H01M4/78H01M4/808H01M10/286H01M10/30H01M50/116H01M50/20H01M50/463Y02E60/10Y02P70/50
Inventor 王丽丽庞柳萍
Owner LIAONING JIUYI ENERGY TECH
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