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Formation, screening and matching process for power lead storage batteries

A lead-acid battery and power technology, applied in the direction of lead-acid battery, lead-acid battery construction, secondary battery, etc., can solve the problems of inconsistent PbO2 content, difficulty in electrolyte penetration, uneven formation of plates, etc., to achieve optimized electrolyte penetration Difficulty, shortened time, good conversion reaction effect

Active Publication Date: 2021-02-05
ZHEJIANG TIANNENG BATTERY JIANGSU +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually, in the formation process, there will be difficulties in electrolyte penetration, uneven formation of plates, PbO 2 The technical problem of inconsistent content, long time in capacity inspection and charging and floating charging stage, low production efficiency

Method used

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  • Formation, screening and matching process for power lead storage batteries
  • Formation, screening and matching process for power lead storage batteries
  • Formation, screening and matching process for power lead storage batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] Taking 12V100Ah power lead-acid battery as an example, the formation, screening and assembly process is as follows

[0034] The first stage: the formation stage

[0035] Formation and standing: add acid to the battery and let it stand for 1 hour to make the liquid permeate evenly;

[0036] Surface formation (based on the surface of the grid rib, the depth of formation at this stage is 30% of the total thickness of the grid, see figure 1 )

[0037] Charging: 10h at 18A

[0038] Charging: 16h at 16A

[0039] Discharge after the surface layer is formed: Discharge at 40A for 1h to eliminate the polarization voltage and at the same time make the acid solution penetrate evenly

[0040] Intermediate formation (based on the surface of the grid rib, the depth of formation at this stage is 60% of the total thickness of the grid, see figure 1 )

[0041] Charging: 2h at 19A

[0042] Charging: 10h at 17A

[0043] Discharge after the middle layer is formed: Discharge at 20A f...

Embodiment approach 2

[0057] Taking 12V100Ah power lead-acid battery as an example, the formation, screening and assembly process is as follows

[0058] The first stage: the formation stage

[0059] Formation and standing: add acid to the battery and let it stand for 1 hour to make the liquid permeate evenly;

[0060] Surface formation (based on the surface of the grid rib, the depth of formation at this stage is 30% of the total thickness of the grid, see figure 1 )

[0061] Charging: 10h at 17A

[0062] Charging: 16h at 15A

[0063] Discharge after surface formation: Discharge at 39A for 1h to eliminate the polarization voltage and at the same time make the acid solution penetrate evenly

[0064] Intermediate formation (based on the surface of the grid rib, the depth of formation at this stage is 60% of the total thickness of the grid, see figure 1 )

[0065] Charging: 2h at 18A

[0066] Charging: 10h at 16A

[0067]Discharge after the middle layer is formed: Discharge at 20A for 10 minut...

Embodiment approach 3

[0081] Taking 12V100Ah power lead-acid battery as an example, the formation, screening and assembly process is as follows

[0082] The first stage: the formation stage

[0083] Formation and standing: add acid to the battery and let it stand for 1 hour to make the liquid permeate evenly;

[0084] Surface formation (based on the surface of the grid rib, the depth of formation at this stage is 30% of the total thickness of the grid, see figure 1 )

[0085] Charging: 10h at 17.5A

[0086] Charging: 16h at 15.8A

[0087] Discharge after the surface layer is formed: Discharge at 41A for 1h to eliminate the polarization voltage and at the same time make the acid solution penetrate evenly

[0088] Intermediate formation (based on the surface of the grid rib, the depth of formation at this stage is 60% of the total thickness of the grid, see figure 1 )

[0089] Charging: 2h at 18.5A

[0090] Charging: 10h at 16.9A

[0091] Discharge after the middle layer is formed: Discharge ...

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Abstract

The invention relates to the field of power batteries, and discloses a power lead storage battery formation, screening and matching process. In the formation stage, different large currents are adopted to carry out a surface layer formation stage, a middle layer formation stage and an outermost layer formation stage, and sufficient electrochemical reaction is carried out, so that more lead dioxideis generated by the positive plate, and more metal spongy lead is generated by the negative plate. Meanwhile, a step of standing treatment is added, as initial operation, to enable acid liquor to permeate evenly, large-current discharging is adopted after the surface-layer formation stage and the middle-layer formation stage respectively, polarization voltage is eliminated, internal resistance isreduced, the acid liquor permeates evenly again, and active substances in the battery can be better converted and reacted. In the screening and matching stage, triple screening of low voltage monitoring, fast voltage drop and battery heating is carried out, and finally bad batteries are picked out. The conditions of difficult electrolyte permeation, uneven polar plate formation and inconsistent PbO2 content in the formation stage are optimized, the total formation time is about 57 hours, the production efficiency is improved by about 10%, the charging rate is 7-8 times, and the formation performance requirement is met.

Description

technical field [0001] The invention relates to the field of accumulators, in particular to a process of formation, screening and grouping of power lead accumulators. Background technique [0002] Electric vehicles are popular among consumers in the domestic market due to their advantages of lightness, convenience, and low price. Lead-acid batteries have been fully promoted in electric vehicles in recent years because of their high cost performance, good power characteristics, small self-discharge, and low price. At present, in the charging and forming process of the battery manufacturing process, the total time of charging and discharging is about 67 hours, the first stage of forming time is about 39 hours, and the second stage of capacity inspection and charging and floating charging is about 18 hours, accounting for the entire charge and discharge forming time process. 1 / 4 of the time. The capacity inspection discharges to 10.5V, the purpose is to match batteries with s...

Claims

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Application Information

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IPC IPC(8): H01M10/44H01M10/04H01M10/12B07C5/344B07C5/36
CPCH01M10/446H01M10/12H01M10/0404B07C5/344B07C5/361Y02E60/10Y02P70/50
Inventor 丁建中李军胡国柱
Owner ZHEJIANG TIANNENG BATTERY JIANGSU