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Charging process for prolonging cycle life of lead acid battery

A cycle life, lead-acid battery technology, used in secondary battery charging/discharging, secondary battery repair/maintenance, etc., can solve the problems of insufficient positive charge, declining battery cycle trend, and unsatisfactory cycle life, to improve the cycle life. effect of life

Active Publication Date: 2012-10-17
江苏永达电源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most domestic manufacturers of valve-regulated lead-acid batteries have an acid pumping step in the charging process, and the battery will be offline after the acid pumping is completed, but the cycle life of valve-regulated lead-acid batteries produced by this charging process is not enough. Ideal, after research, it is found that the reason for the rapid decline in the current battery cycle trend is mainly due to insufficient charging of the positive electrode

Method used

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  • Charging process for prolonging cycle life of lead acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of charging technology that improves lead-acid battery cycle life, is characterized in that: comprise the following steps:

[0023] Step 1: Use 0.5C ampere for constant current discharge, so that the battery voltage drops to 11.50V;

[0024] Step 2: Use 0.1C ampere for constant current charging for 18 hours;

[0025] Step 3: Stand still for 15 minutes;

[0026] Step 4: Use 0.5C ampere for constant current discharge, so that the battery voltage drops to 10.50V;

[0027] Step 5: Use 0.1C ampere for constant current charging for 18 hours;

[0028] Step 6: Use 0.03C ampere for constant current charging for 3 hours and then constant current pumping acid;

[0029] Step 7: Use 0.05C ampere for constant current charging for 3 hours.

[0030] Continue constant current charging after constant current pumping, so that the batteries are all in an overcharged state, and the battery electrode group is already in a gassing state, and the gas released from the battery electr...

Embodiment 2

[0033] The steps are basically the same as in Example 1, except that in step 7, 0.10C ampere is used for constant current charging for 3 hours.

Embodiment 3

[0035] The steps of Example 1 are basically the same, except that in Step 7, 0.20C ampere is used for constant current charging for 3 hours.

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Abstract

The invention provides a charging process for prolonging cycle life of a lead acid battery. The charging process comprises the following steps of: 1, performing constant current discharging with current of 0.5C ampere to reduce battery voltage to be 11.50V; 2, performing constant current charging with current of 0.1C ampere for 18 hours; 3, standing for 15 minutes; 4, performing the constant current discharging with the current of 0.5C ampere to reduce the battery voltage to be 10.50V; 5, performing the constant current charging with the current of 0.1C ampere for 18 hours; 6, performing the constant current charging with current of 0.03C ampere for 3 hours and then performing constant current acid extraction; and 7, performing the constant current charging with current of 0.05 to 0.2C ampere for 3 to 12 hours. A positive electrode of the lead acid battery can be sufficiently charged, and the cycle life of the lead acid battery is prolonged.

Description

technical field [0001] The invention relates to the field of storage batteries, in particular to a charging process for improving the cycle life of lead-acid batteries. Background technique [0002] At present, most domestic manufacturers of valve-regulated lead-acid batteries have an acid pumping step in the charging process, and the battery will be offline after the acid pumping is completed, but the cycle life of valve-regulated lead-acid batteries produced by this charging process is not enough. Ideal, after research, it is found that the reason for the rapid decline in the current battery cycle trend is mainly due to insufficient charging of the positive electrode. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a charging process for improving the cycle life of the lead-acid battery, which can fully charge the positive electrode of the lead-acid battery and improve the cycle life of the lead-acid battery. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/44
CPCY02E60/12Y02E60/10
Inventor 包有富陈胜陈学良胡国柱李治德
Owner 江苏永达电源股份有限公司