Variable-polarity lead-acid battery and using method thereof

A lead-acid battery, changing polarity technology, applied in lead-acid batteries, lead-acid battery electrodes, secondary battery repair/maintenance, etc., can solve problems such as shortening battery life, reduce negative pole polarization, and simplify the preparation process , The effect of eliminating the problem of sulfation of the negative electrode

Inactive Publication Date: 2012-07-18
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Changing the polarity of lead-acid batteries is used in the early activation process of lead-acid batteries after sulfation failure. After reverse charging and activation, the failed lead-acid batteries will regain better capacity and charge-discharge performance in a short period of time. However, due to the large difference in the composition of the po

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0033] Example 1:

[0034] Take 5% carbon black, 2% carbon fiber, 0.5% carbon nanotube, 2% polyacrylonitrile short fiber, MnO 2 2%, sodium lignosulfonate 0.2%, BaSO 4 0.3%, the balance is Pb powder and H 2 SO 4 (According to the pure acid 42g / kgPb standard powder mixed with 1.4g / LH 2 SO 4 ), after mixing the paste, press the pole piece on the Pb-2%Sb alloy grid, and solidify it under 75℃ high humidity (RH100%) for 24h, and use the external chemical forming process to partially turn the prepared electrode plate into a positive electrode. It becomes a negative electrode and finally assembled into a battery. Manually switch the battery polarity after every 3 charge and discharge cycles.

[0035] Set the battery to 0.5I 3 A is charged with constant current to 2.4V / cell, and then charged with constant voltage of 2.4V until the current is stable. Let it stand for 30min, then use I 3 A current is discharged to 1.65V / cell termination, the above is a charge and discharge cycle. The test fo...

Example Embodiment

[0038] Example 2:

[0039] Take acetylene black 10%, carbon fiber 3%, graphene 2%, polyacrylonitrile staple fiber 3%, TiO 2 10%, BaSO 4 2%, the balance is Pb powder and H 2 SO 4 (According to the pure acid 42g / kgPb standard powder mixed with 1.4g / LH 2 SO 4 ), after mixing the paste, press on the Pb-5%Sn-0.1%Ca-Ce0.05% alloy grid to form pole pieces, cure at 75℃ high humidity (RH100%) conditions for 24h, and adopt external chemical forming process Part of the electrode plate becomes a positive electrode, and a part becomes a negative electrode, and finally assembled into a battery. Manually switch the polarity after every 10 charge and discharge cycles.

[0040] Set the battery to 0.5I 3 A is charged with constant current to 2.4V / cell, and then charged with constant voltage of 2.4V until the current is stable. Let it stand for 30min, then use I 3 A current is discharged to 1.65V / cell termination, the above is a charge and discharge cycle. The test found that during 400 cycles, the ...

Example Embodiment

[0041] Example 3:

[0042] Take 10% activated carbon, 5% carbon aerogel, 2% carbon nanotube, 2% polyacrylonitrile short fiber, RuO 2 5%, ZnO5%, BaSO 4 1%, the balance is Pb powder and H 2 SO 4 (According to the pure acid 42g / kgPb standard powder mixed with 1.4g / LH 2 SO 4 ), after mixing the paste, press on a porous lead grid (Pb-Sn10%) to form pole pieces, and cure at 75°C and high humidity (RH100%) for 24h. Use external chemical forming process to partially transform the prepared electrode plate into a positive electrode , Part of it becomes a negative electrode, and finally assembled into a battery. Manually switch the battery polarity after every 3 deep charge and discharge cycles.

[0043] Set the battery to 0.5I 3 A is charged with constant current to 2.4V / cell, and then charged with constant voltage of 2.4V until the current is stable. Let it stand for 30min, then use I 3 A current is discharged to 1.65V / cell termination, the above is a charge and discharge cycle. The test f...

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PUM

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Abstract

The invention provides a variable-polarity lead-acid battery and a using method of the variable-polarity lead-acid battery. Positive and negative plates of the lead-acid battery consist of the same grids and lead plasters, and after one or more times of charge-discharge cycle of the battery, the polarities of the positive and negative plates are exchanged. The variable-polarity lead-acid battery has the advantages that the problem of vitriolization of an ordinary lead-acid battery can be solved, the service life of the battery is prolonged, and the utilization ratio of active substances is increased at the same time, so that the charge receptivity and the discharge capacity of the battery are greatly improved.

Description

technical field [0001] The invention discloses a polarity-variable lead-acid battery and a use method thereof, belonging to the field of electrochemical energy storage devices. Background technique [0002] Since Gasten Plant invented lead-acid batteries in 1859, lead-acid batteries have been the most widely used products in the field of batteries, such as automobiles, locomotives, ships, airplanes, mobile communications and backup power supply equipment. . In the decades when new batteries such as nickel-cadmium batteries, nickel-hydrogen batteries, and lithium-ion batteries have been on the market, they can still firmly occupy most of the market share, which fully reflects the cost and safety of lead-acid batteries. advantages. At present, more than 95% of small hybrid electric vehicles and special electric vehicles use lead-acid batteries. As a micro and mild hybrid electric vehicle for gasoline-electric hybrid vehicles, lead-acid batteries have also been successfully ...

Claims

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Application Information

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IPC IPC(8): H01M10/06H01M4/14H01M10/42
CPCY02E60/126Y02E60/10
Inventor 蒋良兴洪波赖延清贾明关翔李劼刘业翔
Owner CENT SOUTH UNIV
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