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Production method for positive pole of high-power nickel-metal hydride battery

A nickel-metal hydride battery and the technology of its manufacturing method, which are applied in the direction of alkaline storage battery electrodes, etc., can solve problems affecting battery discharge performance, high impedance, and large internal resistance of the battery, so as to improve high-power discharge performance, reduce contact resistance, and improve bonding force effect

Inactive Publication Date: 2014-06-04
QUANZHOU JINTION ELECTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for making the positive electrode of a high-power nickel-metal hydride battery, the main purpose of which is to overcome the shortcomings of the existing nickel-hydrogen battery positive plate itself, which has a high impedance, resulting in a large internal resistance of the battery, thereby affecting the discharge performance of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production method of a high -power nickel -metal hydride battery, including the following steps:

[0019] 1) Preparation of active substances: Mix nickel hydro -hydroxide and cobalt hydroxide, and add a small amount of oxide as additives, and then use mechanical stirring to fully mix it into mixed powder.5 cobalt hydroxide and 3 copies of oxide.

[0020] 2) Mixing filling: Add aluminum powder to the mixed powder, and then use the ultrasonic oscillation method to fully mix it into powder. The particle size of aluminum powder is controlled at 20-100 microns.3 pieces.

[0021] 3) Contact matrix: Fill the powder to the matrix by physical filling. After the filling, the roller machine is pressed by the roller machine, so that the powder can be fully contacting the matrix to form a positive film.

[0022] 4) Subsequent treatment: Send the positive film into the conveyor belt in the high -temperature tunnel kiln for high temperature treatment, and then use the roller machine t...

Embodiment 2

[0027] A method of making a high -power nickel -metal hydride battery, including the following steps:

[0028] 1) Preparation of active substances: Mix nickel hydroxide and cobalt hydroxide, and add a small amount of oxide as additives. Then, the ultrasonic oscillation method is fully mixed to make mixed powder.2 parts, cobalt hydroxide, and 0.1 copies of oxide.

[0029] 2) Mixing filling: Add aluminum powder to the mixed powder, and then use mechanical stirring to fully mix and mix it to make powder. The particle size of aluminum powder is controlled at 20-100 microns.Powder 0.5 parts.

[0030] 3) Contact matrix: Fill the powder to the matrix by physical filling. After the filling, the roller machine is pressed by the roller machine, so that the powder can be fully contacting the matrix to form a positive film.

[0031] 4) Subsequent treatment: Send the positive film into the conveyor belt in the high -temperature tunnel kiln for high temperature treatment, and then use the rolle...

Embodiment 3

[0033] A method of making a high -power nickel -metal hydride battery, including the following steps:

[0034] 1) Preparation of active substances: Mix nickel hydro -hydroxide and cobalt hydroxide, and add a small amount of oxide as additives, and then use mechanical stirring to fully mix it to make mixed powder.10 copies of cobalt hydroxide and 5 copies of oxide.

[0035] 2) Mixing filling: Add aluminum powder to the mixed powder, and then use the ultrasonic oscillation method to fully mix it into powder. The particle size of aluminum powder is controlled at 100 microns.share.

[0036] 3) Contact matrix: Fill the powder to the matrix by physical filling. After the filling, the roller machine is pressed by the roller machine, so that the powder can be fully contacting the matrix to form a positive film.

[0037] 4) Follow -up treatment: Send the positive film into the conveyor belt in the high -temperature tunnel kiln for high temperature treatment, and then use the roller machine...

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Abstract

The invention discloses a production method for the positive pole of a high-power nickel-metal hydride battery, comprising the following steps of: step 1, mixing nickel hydroxide with cobalt hydroxide, adding a small amount of yttrium oxide as an additive, and then adequately stirring and mixing to prepare a mixed powder; step 2, adding an aluminium powder in the mixed powder, and then adequately stirring and mixing to prepare a powder, wherein the particle size of the aluminium powder is controlled to be 20-100 microns; step 3, filling the powder on a matrix by means of physical filling, and rolling via a rolling machine so that the powder can be adequately contacted with the matrix to form a positive pole piece; and step 4, conveying the positive pole piece in a high-temperature tunnel kiln and performing a high-temperature treatment, and rolling again via the rolling machine, wherein the temperature in the high-temperature tunnel kiln is controlled to 150-300 DEG C. The aluminium powder is used as the filler, so that the high-power discharge performance of the nickel-metal hydride battery is improved.

Description

Technical field [0001] The present invention involves the production process of nickel -metal hydride battery, which specifically refers to the production method of the positive pole of high -power nickel -hydride batteries. Background technique [0002] With the importance of people's attention to environmental protection, the traditional automotive industry is seeking new ways to go out. Environmental -friendly and low -carbon electric vehicles naturally become the target of companies in various companies, thereby bringing new development space to the battery industry.At present, there are three main types of electric vehicle batteries: lead -acid batteries, nickel -metal hydride batteries, lithium batteries.Due to the destructiveness of the environment and the low quality of its own energy, the lead -acid battery has been abandoned by most manufacturers, and the lithium -ion battery has made most manufacturers fear at its own safety.The development of funds is developed, but t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/30
CPCY02E60/124Y02E60/10
Inventor 陈文明陈端典李培坤张桂生
Owner QUANZHOU JINTION ELECTRONICS
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