Charging process for improving cycle performance of battery

A technology of battery circulation and battery charging, which is applied in the direction of secondary battery charging/discharging, secondary battery, secondary battery repair/maintenance, etc. It can solve the problems of affecting battery life, wasting energy loss, increasing energy loss, etc. The effect of cycle life improvement

Inactive Publication Date: 2020-07-31
TIANNENG BATTERY WUHU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The formation power of the battery is one of the main factors affecting the formation of the battery. The formation power is too low, the active material is not fully converted, and the lead dioxide content is low, which leads to poor initial performance of the battery. However, the high formation power increases the energy loss In addition, the temperature rise in the formation process is not easy to control, and the impact of the gas on the plate is also large, which will affect the battery life. Therefore, the formation process of the battery is very important. For the formation of small and dense batteries, the previous technology used three The process of charging and discharging for formation often takes up to five days, which wastes energy and consumes a lot

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] A charging process for improving battery cycle performance, including:

[0034] Stp1, use 3A current to charge the battery for 1h;

[0035] Stp2, use 8A current to charge the battery for 2h;

[0036] Stp3, use 9.5A current to charge the battery for 4h;

[0037] Stp4, use 6A current to charge the battery for 2h;

[0038] Stp5, use 5A current to discharge the battery for 0.25h;

[0039] Stp6, use 9.5A current to charge the battery for 2h;

[0040] Stp7, use 8A current to discharge the battery for 0.25h;

[0041] Stp8, use 9.5A current to charge the battery for 2h;

[0042] Stp9. Use a current of 5A to discharge the battery for 0.h;

[0043] Stp10, use 9.5A current to charge the battery for 2 hours;

[0044] Stp11. Use a current of 10A to discharge the battery for 0.5h;

[0045] Stp12, use 9.5A current to charge the battery for 2 hours;

[0046] Stp13. Use a current of 10A to discharge the battery for 0.5h;

[0047] Stp14. Charge the battery for 3 hours with a cu...

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PUM

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Abstract

The invention discloses a charging process for improving the cycle performance of a battery, and relates to the technical field of battery production. According to the invention, the charging and discharging processes of 22 steps are set; a traditional acid extraction stage is advanced; standing is performed for 0.25 h after acid extraction is completed; and charging is performed for 13 h with 1Alow current. The capacity of the obtained battery is improved by 5% compared with that of a conventional battery, and the cycle life of the battery is prolonged by about 10%.

Description

technical field [0001] The invention belongs to the technical field of battery production, and in particular relates to a charging process for improving battery cycle performance. Background technique [0002] The formation power of the battery is one of the main factors affecting the formation of the battery. The formation power is too low, the active material is not fully converted, and the content of lead dioxide is low, which leads to poor initial performance of the battery, and the high formation power increases the energy loss. In addition, the temperature rise in the formation process is not easy to control, and the impact of the gas on the plate is also large, which will affect the battery life. Therefore, the formation process of the battery is very important. For the formation of small and dense batteries, the previous technology used three The process of charging and discharging for formation often takes up to five days, which wastes energy and consumes a lot. C...

Claims

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Application Information

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IPC IPC(8): H01M10/44
CPCH01M10/446Y02E60/10
Inventor 钦晓峰魏良波陈林毛锦敏陆毅施梅
Owner TIANNENG BATTERY WUHU
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