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A kind of internalization process of valve-regulated storage battery

A technology of internal formation and storage battery, which is applied in the direction of lead-acid battery, lead-acid battery construction, secondary battery, etc. It can solve the problems of difficult temperature control, poor consistency of battery discharge capacity, etc., and achieve short charging time and uniform positive active material content Consistent, reduced acid mist discharge effect

Active Publication Date: 2021-04-13
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims at the problems in the prior art that the temperature is not easy to control due to charging and heating during the formation process, and the consistency of the battery discharge capacity is poor, etc., and provides a valve-regulated battery internal formation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 6-DZF-12 There are 864 semi-finished batteries in total. After adding acid, put the batteries into the water tank (water bath formation tank) and pour cooling water in time. After the liquid level reaches the height of the plate, stop feeding the cooling water; the battery stands still for 0.5h. The 18 batteries in each path are connected in series, and the temperature sensing probe on the side of the 9th battery in a single path is selected to be attached to the charging device to detect the charging temperature of the battery.

[0027] The set temperature is 45°C, the maximum battery current is 6.0A (0.5C 2 A) Carry out chemical conversion:

[0028] Once charged, the battery first charges at 0.6A (0.05C 2 A) Charge for 1 hour, and then start charging with a current of 6.0A; when the temperature reaches 45°C during charging, the charging current drops, and the charging current drops to 1.87A / h (about 0.156C 2 A / h, the current gradually drops from 6.0A to 3.2A within ...

Embodiment 2

[0037] 6-DZF-20 There are 1152 semi-finished batteries in total. After adding acid, put the batteries into the water tank and pour cooling water in time. Stop feeding the cooling water after the liquid level reaches the plate height; the batteries stand for 2 hours. The 18 batteries in each path are connected in series, and the side of the sixth battery in a single path is selected to be connected to the temperature sensing probe on the charging device to detect the charging temperature of the battery.

[0038] The set temperature is 44°C, the maximum battery current is 14.0A (0.7C 2 A) Carry out chemical conversion:

[0039] Once charged, the battery first charges at 2.0A (0.1C 2 A) Charge for 2 hours, and then start charging with a current of 14.0A; when the temperature reaches 44°C during charging, the charging current drops, and the charging current drops to 4.11A / h (about 0.206C 2 A / h, the charging current gradually drops from 14.0A to 2.9A within 2.7h); from 2.7h onwar...

Embodiment 3

[0048] 6-EVF-32 There are 864 semi-finished batteries in total. After adding acid, put the batteries into the water tank and pour cooling water in time. Stop feeding the cooling water after the liquid level reaches the plate height; the batteries stand for 1 hour. The 18 batteries in each path are connected in series, and the temperature sensing probe on the side of the 12th battery in a single path is selected to be attached to the charging device to detect the charging temperature of the battery.

[0049] The set temperature is 46°C, the maximum battery current is 20.0A (0.625C 2 A) Carry out chemical conversion:

[0050] Once charged, the battery first charges at 3.0A (0.09375C 2 A) Charge for 2 hours, and then start charging with a current of 20.0A; when the temperature reaches 46°C during charging, the charging current drops, and the charging current drops to 6.35A / h (about 0.198C 2 A / h, the charging current gradually decreased from 20.0A to 3.5A within 2.6h); from 2.6h...

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PUM

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Abstract

The invention discloses an internal formation process of a valve-controlled storage battery. The internal formation temperature is set at 45±1°C, and then charging and discharging are performed three times and two discharges. During the three charging processes, when the temperature is higher than the set temperature Reduce the charging current, increase the charging current when the temperature is lower than the set temperature. Beneficial effects of the present invention: (1) The internal formation process of the valve-regulated storage battery of the present application has less net charging power and shorter charging time. (2) The temperature of each stage in the charging process of the battery is consistent, the content of the active material of the positive electrode is uniform and consistent after formation, and the discharge consistency is strong. (3) The current of the battery at the end of charging is adjusted according to the set temperature, which reduces the damage to the strength of the active material and the separator caused by gas evolution during charging, and improves the battery life. At the same time, the discharge of acid mist during the formation process is reduced.

Description

technical field [0001] The invention relates to the technical field of lead storage battery production, in particular to an internal formation process of a valve-regulated storage battery. Background technique [0002] The internal formation process of traditional valve-regulated lead-acid batteries basically takes 4-7 days. During the actual formation process, the internal temperature of the battery fluctuates due to changes in air temperature, charging current, side reaction heat generation, and external cooling measures for the battery. [0003] For example, the invention with the publication number CN102437380A discloses a method for internal formation of a five-charge and four-discharge storage battery. Put the battery in cooling water to cool down, let the battery stand for 2+0.5h to soak the polar plate and separator with sulfuric acid, cool down the battery to 30°C~40°C, turn on the electricity and form, control the water temperature during the formation process, so ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12
CPCH01M10/121Y02E60/10Y02P70/50
Inventor 庄建杨新明方玉斌陈贤海
Owner TIANNENG BATTERY GROUP