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A low-temperature internalization test method for lead-acid batteries

A technology of lead-acid batteries and testing methods, which is applied in secondary battery testing, secondary battery repair/maintenance, secondary battery charging/discharging, etc., and can solve positive plate white spots, unresolved white spots, and yellow spots on the surface of battery separators, etc. problems, to achieve high charge conversion efficiency, weaken the acid mist environment, and shorten the required time

Active Publication Date: 2019-09-20
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lead-acid battery is a charging power source with stable performance and high safety. The following problems exist in the process of internal formation of lead-acid batteries: it is difficult to ensure that the positive plate of the battery is uniformly formed, and the positive plate is prone to white spots; the battery formation process takes too long, which delays the production efficiency of the battery; the conversion efficiency of the battery charge is low, Excess electricity needs to be poured in to convert the cooked plate. At the same time, the temperature in the initial stage of the formation process is too high, which will cause macular phenomenon on the surface of the battery separator after formation, which will affect the cycle life of the battery and other problems.
[0005] In the above-mentioned prior art, the problem to be solved is that the internal formation time of the lead-acid battery is relatively long, and the white spots caused by the uneven formation of the plates and the excessive temperature in the initial formation stage have not been solved in the internal formation process. Problems such as macula and low battery charging conversion efficiency caused by high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Low-temperature internal formation test methods for lead-acid batteries, which specifically include:

[0037] (1) Set the density to 1.33g / cm 3 After the sulfuric acid electrolyte is added to the lead-acid battery, immediately put it in a low-temperature water bath and let it stand for 1 hour, then start the charging procedure. Wherein, the temperature range of the low temperature is 4-10°C, and the battery temperature does not exceed 45°C during the process of adding the sulfuric acid electrolyte to the lead-acid battery.

[0038] In the low temperature internalization stage, the specific steps are:

[0039] (2) Charge for 4 hours at a current of 0.35C;

[0040] (3) Charge for 15 hours at a current of 0.60C;

[0041] In the internal formation stage at room temperature, the temperature range at room temperature is 20-28°C, and the steps are:

[0042] (4) Charge for 10 hours at a current of 0.50C;

[0043] (5) Discharge at 0.70C for 1.5 hours, 0.25I 2 The current i...

Embodiment 2

[0054] Low-temperature internal formation test methods for lead-acid batteries, which specifically include:

[0055] (1) Set the density to 1.285g / cm 3After the sulfuric acid electrolyte is added to the lead-acid battery, it is immediately placed in a low-temperature water bath, and after standing for 0.5 hours, the charging process is started. Among them, the temperature range of the low temperature is 4-10°C, the battery temperature does not exceed 45°C during the process of adding the sulfuric acid electrolyte to the lead-acid battery, and the modulation magnetic field source and modulation device are placed near the battery.

[0056] In the low temperature internalization stage, the specific steps are:

[0057] (2) Charge for 3 hours at a current of 0.25C;

[0058] (3) Charge for 12 hours at a current of 0.40C;

[0059] In the internal formation stage at room temperature, the temperature range at room temperature is 20-28°C, and the specific steps are:

[0060] (4) Cha...

Embodiment 3

[0072] Low-temperature internal formation test methods for lead-acid batteries, which specifically include:

[0073] (1) Set the density to 1.33g / cm 3 After the sulfuric acid electrolyte is added to the lead-acid battery, it is immediately placed in a low-temperature water bath, and after standing for 0.5 hours, the charging process is started. Among them, the temperature range of the low temperature is 4-10°C, the battery temperature does not exceed 45°C during the process of adding the sulfuric acid electrolyte to the lead-acid battery, and the modulation magnetic field source and modulation device are placed near the battery;

[0074] In the low temperature internalization stage, the specific steps are:

[0075] (2) Charge for 3 hours at a current of 0.35C;

[0076] (3) Charge for 12 hours at a current of 0.60C;

[0077] In the internal formation stage at room temperature, the temperature range at room temperature is 20-28°C, and the specific steps are:

[0078] (4) Cha...

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Abstract

The invention provides a lead-acid storage battery low temperature inner formation test method including the steps of: 1) adding a sulfuric acid electrolyte to the lead-acid storage battery and allowing the lead-acid storage battery to stand in a low temperature water bath tank; 2) low temperature formation: at low temperature, charging the storage battery for two times under different constant current, wherein maximum voltage of the low temperature inner formation is not more than 16.5 V; 3) normal temperature formation: performing multiple times of charging / discharging processes to the lead-acid storage battery under different constant currents to complete the low temperature inner formation of the lead-acid storage battery. The test method effectively reduces required time in the formation, is high in charge conversion efficiency, is low in single-cell water loss of the battery, can avoid problem of yellow spots on separation boards in the battery, is high in uniformity of formationof a positive electrode plate, and can reduce acid fog in a formation workshop.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a low-temperature internalization test method for lead-acid batteries. Background technique [0002] Lead-acid battery is a charging power source with stable performance and high safety. The following problems exist in the process of internal formation of lead-acid batteries: it is difficult to ensure that the positive plate of the battery is uniformly formed, and the positive plate is prone to white spots; the battery formation process takes too long, which delays the production efficiency of the battery; the conversion efficiency of the battery charge is low, Excess electricity needs to be poured in to convert the cooked plate. At the same time, the temperature in the initial stage of the formation process is too high, which will cause macular phenomenon on the surface of the battery separator after formation, which will affect the cycle life of the battery and othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/44
CPCH01M10/4285H01M10/44Y02E60/10
Inventor 柯娃赵磊吴亮
Owner CHAOWEI POWER CO LTD
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