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Nickel-hydrogen battery capable of being used in low-temperature environment and preparation method thereof

A nickel-metal hydride battery, low-temperature environment technology, applied in the manufacture of nickel batteries, alkaline batteries, battery electrodes, etc., can solve problems such as unfavorable discharge and unfavorable charging, and achieve good cycle life and power performance.

Inactive Publication Date: 2012-07-18
LEXEL BATTERYSHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It shows that hydrogen storage alloy powder is not conducive to its discharge at low temperature, and it is also not conducive to its charging at high temperature
Therefore, ordinary nickel-metal hydride batteries can only be used in the environment of -20 ℃ ~ 60 ℃

Method used

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  • Nickel-hydrogen battery capable of being used in low-temperature environment and preparation method thereof
  • Nickel-hydrogen battery capable of being used in low-temperature environment and preparation method thereof
  • Nickel-hydrogen battery capable of being used in low-temperature environment and preparation method thereof

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preparation example Construction

[0027] Such as figure 2 Shown, a kind of preparation method of the Ni-MH battery that can be used in low temperature environment comprises the following steps:

[0028] A, make the positive electrode sheet and the negative electrode sheet; wherein the negative electrode sheet is made as follows: cerium-rich or lanthanum-rich hydrogen storage alloy, carboxymethyl cellulose dispersion, and conductive carbon black dispersion in a mass ratio of 100:12~18:13~ 19.5 Mixing, after fully stirring, mix it into a paste slurry, fill it into the gap of the conductive skeleton of the nickel-plated steel strip by coating, dry it, roll it into a sheet, and cut it into a negative electrode sheet that meets the specifications ;

[0029] B. The position of the positive electrode for spot welding the nickel strip is cleared in the middle position in the length direction by ultrasonic waves, and the nickel strip is spot-welded with the cap in the subsequent assembly as the lead-out end of the po...

Embodiment 1

[0036] Embodiment 1: Adopt the present invention to make 1.2VAA1800mAh battery and test at low temperature. The production of the positive electrode sheet: ordinary spherical Ni(OH) 2 100 parts, CoO 4 parts, Ca(OH) 21 part, 2 parts of ZnO, add 1 part of polytetrafluoroethylene emulsion (containing 60% polytetrafluoroethylene), mix well in the mortar, then pass through 150 mesh sieve twice, and then fill it into the foamed nickel matrix , rolled into a sheet, and cut into a positive electrode sheet of 80.0 mm long x 38.0 m wide x 0.81 thick. The making of negative plate: 100 parts of ordinary lanthanum-rich hydrogen storage alloys, 12 parts of carboxymethyl cellulose dispersions (containing 2.75% carboxymethyl cellulose), 13 parts of conductive carbon black dispersions (containing 4.6% carbon black solids) Components) after being fully stirred and mixed into a paste slurry, fill it into the gap of the 0.04mm thick nickel-plated steel strip conductive skeleton by coating, dry,...

Embodiment 2

[0037] Embodiment 2: Adopt the present invention to make 1.2VAA1800mAh battery and test at low temperature. The production of the positive electrode sheet: ordinary spherical Ni(OH) 2 100 parts, CoO 5 parts, Ca(OH) 2 1 part, 2 parts of ZnO, add 1 part of polytetrafluoroethylene emulsion (containing 60% polytetrafluoroethylene), after mixing uniformly in a mortar, then pass through a 150 mesh sieve twice, and then fill it into the foamed nickel matrix, It was rolled into a sheet, and cut into a positive electrode sheet with a size of 80.0 mm long×38.0 m wide×0.81 thick. The making of negative plate: 100 parts of ordinary lanthanum-rich hydrogen storage alloys, 12 parts of carboxymethyl cellulose dispersions (containing 2.75% carboxymethyl cellulose), 13 parts of conductive carbon black dispersions (containing 4.6% carbon black solids) Components) after being fully stirred and mixed into a paste slurry, fill it into the gap of the 0.04mm thick nickel-plated steel strip conduct...

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Abstract

The invention discloses a nickel-hydrogen battery capable of being used in a low-temperature environment and a preparation method of the nickel-hydrogen battery, and relates to the nickel-hydrogen battery and the manufacturing method of the nickel-hydrogen battery. The nickel-hydrogen battery capable of being used in the low-temperature environment comprises a shell, an anode, a cathode, electrolyte and a diaphragm, wherein the anode, the cathode, the electrolyte and the diaphragm are arranged in the shell; the diaphragm isolates the anode and the cathode; and the cathode is made of a cerium-rich or lanthanum-rich hydrogen storage alloy. The preparation method comprises the following steps of: A, manufacturing a positive plate and a negative plate; B, eliminating a position for spot welding of a nickel strap from a center position in the length direction of the anode through ultrasonic waves, wherein the nickel strap is welded together with a nut cap during subsequent assembly to serve as a leading-out end of the anode; and C, winding the positive plate, the negative plate and the diaphragm into cylindrical shapes by using a winding machine, placing the positive plate, the negative plate and the diaphragm into a nickel plated steel shell, and adding the electrolyte to assemble a battery. When the nickel-hydrogen battery is used in an outdoor environment in winter, electrical equipment can use the electric power for a longer time, so that use requirements of customers are met, the cycle life of the nickel-hydrogen battery is long, and the power performance of the nickel-hydrogen battery is high.

Description

technical field [0001] The invention relates to a nickel-hydrogen battery and a manufacturing method thereof, in particular to a nickel-hydrogen battery capable of normal discharge in a low-temperature environment and a preparation method thereof. Background technique [0002] Ni-MH batteries use nickel hydroxide as the positive electrode, hydrogen storage alloy as the negative electrode, a mixed aqueous solution of potassium hydroxide, sodium hydroxide, and lithium hydroxide as the electrolyte (usually called a ternary electrolyte), and non-woven fabric as the separator. secondary battery. Ni-MH battery is an exothermic reaction when it is charged, and an endothermic reaction when it is discharged. At the same time, it needs to absorb heat from the environment at the initial stage of discharge, which causes the temperature of the system to drop and deteriorates the low-temperature performance. The temperature inside the battery has risen. It shows that hydrogen storage al...

Claims

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Application Information

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IPC IPC(8): H01M4/38H01M10/30H01M10/28
CPCY02E60/124Y02E60/10Y02P70/50
Inventor 罗倩仲谢勋
Owner LEXEL BATTERYSHENZHEN
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