Formation method of positive plate of lead-acid storage battery with long service life

A technology of lead-acid battery and formation method, applied in the direction of lead-acid battery electrodes, positive electrodes, secondary batteries, etc., can solve the problems of high battery temperature, long formation time, and destruction of active material results, so as to improve production efficiency and skeleton The effect of structural integrity and prolonging service life

Pending Publication Date: 2021-11-30
CHAOWEI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In order to overcome the problems of long formation time, high battery temperature in the formation process and destruction of active materials, the present invention provides a long-life formation method for the positive plate of the lead-acid battery, which has uniform formation of the positive plate of the battery, short formation time and suitable formation temperature , and the active material structure will not be destroyed

Method used

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  • Formation method of positive plate of lead-acid storage battery with long service life

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Effect test

Embodiment 1

[0031] A long-life lead-acid storage battery positive plate formation method, the specific implementation is as follows:

[0032] a) Standing stage: After injecting the electrolyte into the battery, put the battery in a water bath for 1 hour;

[0033] The temperature of the water bath is controlled below 15°C, and the battery temperature is guaranteed to be between 20-50°C during the entire formation stage.

[0034] b) Formation stage:

[0035] b1: Charge with 0.4A (electric vehicle battery capacity C2=20Ah, so current I=0.02C2=0.02*20=0.4A) constant current for 0.5h, then charge with 5A constant current for 14h, and stand still for 1h for the first time;

[0036] b2: Charge with 5A constant current for 6h, and rest for 1h for the second time;

[0037] b3: Charge with 5A constant current for 5h, and rest for 1h for the third time;

[0038] b4: Charge with 5A constant current for 5h, and rest for 0.5h for the fourth time;

[0039] b5: Charge with 4A constant current for 3h,...

Embodiment 2

[0045] A long-life lead-acid storage battery positive plate formation method, the specific implementation is as follows:

[0046] a) Standing stage: After injecting the electrolyte into the battery, put the battery in a water bath for 1 hour;

[0047] b) Formation stage:

[0048] b1: Charge with 0.4A constant current for 0.5h, then charge with 4A constant current for 15h, and rest for 0.5h for the first time;

[0049] b2: Charge with 4A constant current for 8h, and rest for 0.5h for the second time;

[0050] b3: Charge with 4A constant current for 7h, and rest for 0.5h for the third time;

[0051] b4: Charge with 4A constant current for 5h, and rest for 0.5h for the fourth time;

[0052] b5: Charge with 4A constant current for 4h, and rest for 1h for the fifth time;

[0053] b6: Discharge at a constant current of 7.5A until the voltage of each battery is 9-10V / pc;

[0054] b7: Charge with 4A constant current for 8h, then charge with 4A constant current for 4h;

[0055] b...

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Abstract

The invention relates to the field of battery formation, and provides a long-life lead-acid storage battery positive plate formation method aiming at the problems that the formation time is long, the battery temperature is too high in the formation process and an active substance result is damaged, the long-life lead-acid storage battery positive plate formation method comprises a standing stage and a formation stage, and the formation stage comprises the following steps: S1, repeating the steps of constant-current charging and standing for a plurality of times, wherein the total time is 30-40 hours; S2, discharging at constant current until the voltage of each battery is 9-10V / battery; and S3, carrying out constant-current charging and standing. The battery positive plate formed by the method is uniform in formation, short in formation time and appropriate in formation temperature, and an active substance structure cannot be damaged.

Description

technical field [0001] The invention relates to the field of battery formation, in particular to a long-life lead-acid storage battery positive plate formation method. Background technique [0002] Formation is a very critical process in the manufacture of lead-acid batteries, and the quality of the formation process directly affects the performance and service life of lead-acid batteries. Even for lead-acid batteries with the same formula, same process, and same batch, the use of different currents and different formation times in the formation process will lead to changes in the particle size and arrangement of active materials. [0003] Existing dynamic AGM valve-regulated lead-acid batteries usually adopt an internal formation process of three charges and two discharges, four charges and three discharges, which can ensure that the positive plate of the AGM battery is uniformly formed and the active material is fully converted. However, a large amount of electricity is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/16H01M10/44
CPCH01M4/16H01M10/446H01M2004/028Y02E60/10
Inventor 马洪涛闫大龙李娟钱欢赵青
Owner CHAOWEI POWER CO LTD
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