Multi-stage charge-discharge container formation process for lead-acid battery

A lead-acid battery, internalization technology, applied in secondary battery charging/discharging, lead-acid battery, lead-acid battery construction and other directions, to achieve the effect of less joule heat, avoid hydration and decomposition, and effectively control the temperature in the battery

Pending Publication Date: 2022-03-25
HENAN CHILWEE GENSHORE POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of this application is to provide a multi-stage charge-discharge internalization process for lead-acid batteries to solve the problem of how to improve battery consistency in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Implementation Example 1: The density of the electrolyte solution added before the internalization of the lead-acid battery is 1.245g / cm 3 , and the battery formation and charging process is in a water bath environment, the temperature of the water bath is 30°C, the internal temperature of the battery is controlled to be ≤56°C, and the charge and discharge current is controlled at ±0.01A.

[0041] 1) The standing time after adding acid is ≤0.5h;

[0042] 2) Charge with a constant current of 0.01C for 10 minutes;

[0043] 3) Charge with a constant current of 0.02C for 10 minutes;

[0044] 4) Charge with a constant current of 0.04C for 0.5h;

[0045] 5) Charge with a constant current of 0.08C for 0.5h;

[0046] 6) Charge with a constant current of 0.2C for 12.0h;

[0047] 7) Stand still for 0.5h;

[0048] 8) Charge with a constant current of 0.2C for 4.5h;

[0049] 9) Discharge at a constant current of 0.33C for 0.25h;

[0050] 10) Charge with a constant current of...

Embodiment 2

[0069] Implementation Example 2: The density of the electrolyte solution added before the internalization of the lead-acid battery is 1.245g / cm 3 , and the battery formation and charging process is in a water bath environment, the temperature of the water bath is 30°C, the internal temperature of the battery is controlled to be ≤56°C, and the charge and discharge current is controlled at ±0.01A.

[0070] 1) The standing time after adding acid is ≤0.5h;

[0071] 2) Charge at a constant current of 0.005C for 10 minutes;

[0072] 3) Charge with a constant current of 0.01C for 10 minutes;

[0073] 4) Charge with a constant current of 0.03C for 0.5h;

[0074] 5) Charge with a constant current of 0.06C for 0.5h;

[0075] 6) Charge with a constant current of 0.15C for 12.0h;

[0076] 7) Stand still for 0.5h;

[0077] 8) Charge with a constant current of 0.15C for 4.5h;

[0078] 9) Discharge at a constant current of 0.33C for 0.25h;

[0079] 10) Charge with a constant current of ...

Embodiment 3

[0098] Implementation Example 3: The density of the electrolyte solution added before the internalization of the lead-acid battery is 1.245g / cm 3 , and the battery formation and charging process is in a water bath environment, the temperature of the water bath is 30°C, the internal temperature of the battery is controlled to be ≤56°C, and the charge and discharge current is controlled at ±0.01A.

[0099] 1) The standing time after adding acid is ≤0.5h;

[0100] 2) Charge with a constant current of 0.015C for 10 minutes;

[0101] 3) Charge with a constant current of 0.03C for 10 minutes;

[0102] 4) Charge with a constant current of 0.05C for 0.5h;

[0103] 5) Charge with a constant current of 0.10C for 0.5h;

[0104] 6) Charge with a constant current of 0.25C for 12.0h;

[0105] 7) Stand still for 0.5h;

[0106] 8) Charge with a constant current of 0.25C for 4.5h;

[0107] 9) Discharge at a constant current of 0.33C for 0.25h;

[0108] 10) Charge with a constant current...

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Abstract

According to the multi-stage charge-discharge container formation process for the lead-acid battery provided by the invention, small-current formation charging is performed on the battery subjected to acid injection, so that active substances on positive and negative plates in the battery and a grid interface are prevented from being damaged, the active substances are fully converted, the structure is stable, the consistency of a battery pack is improved, and the cycle life of the battery pack is prolonged; moreover, according to the process, the standing time of the battery is strictly controlled, so that the reaction heat of active substances and sulfuric acid accumulated in the battery is relatively less, then the battery is charged by adopting low current, and the battery is placed in a water bath cooling environment, so that the temperature in the battery is effectively controlled; and the hydration decomposition of lignin in the negative electrode active material is effectively avoided, so that the low-temperature discharge property of the battery is also guaranteed.

Description

technical field [0001] The present application relates to the field of lead-acid batteries, in particular to a multi-stage charge-discharge internalization process for lead-acid batteries. Background technique [0002] In the prior art, the battery formation process is divided into two methods: internal formation process and external formation process. The internal formation process of the existing battery is completed by adding acid once, and the density of the electrolyte added is high, causing the battery to be charged during the internal formation process. For a long time, in order to shorten the production cycle, it is necessary to increase the current in the charging stage. After the current in each stage of the charging stage is increased, it is found that the consistency of the battery is reduced. Lead-acid batteries for electric road vehicles are put into the market in the form of battery packs. If the consistency of the batteries is not good, the service life of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44H01M10/12
CPCH01M10/446H01M10/12Y02E60/10Y02P70/50
Inventor 祝皎皎程志明张余霞
Owner HENAN CHILWEE GENSHORE POWER
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