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Non-circulating cooling water internalization process for lead-acid batteries

A lead-acid battery, cooling water technology, applied in lead-acid battery, lead-acid battery construction, secondary battery and other directions, can solve problems such as potential safety hazards, unenvironmental protection, etc., to optimize production operation steps, reduce labor costs, Good capacity consistency

Active Publication Date: 2019-12-17
SHENZHEN CENT POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the current problems of unenvironmental protection, potential safety hazards and the need for circulating cooling water in the internal formation of valve-controlled sealed lead-acid batteries, the embodiment of the present invention provides a non-circulating cooling water internal formation process for lead-acid batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment takes a lead-acid battery of the 6FM100 model as an example.

[0034] (1) Place the 6FM100 battery that has passed the leak inspection in a constant temperature room at 0℃ and cool it down for 12 hours;

[0035] (2) Take the density at 25℃ as 1.25g / cm 3 Add 1.5% of anhydrous sodium sulfate, 0.5% of stannous sulfate, 0.05% of triethyl ammonium hydrogen sulfate, and 0.05% of dibutyl ammonium hydrogen sulfate, and stir thoroughly until the dissolution is complete. Cooled synchronously with the battery in (1) in a constant temperature room at 0°C for 12 hours;

[0036] (3) Take out the above-mentioned battery and electrolyte, add the electrolyte to the battery with a vacuum acid adding machine, and after adding acid, place the acid-added battery in a constant temperature room at 15°C for 2 hours;

[0037] (4) At the end of constant temperature cooling, use the following chemical conversion process for chemical conversion: a) Charge with 5A charging current for 2 hou...

Embodiment 2

[0040] In this embodiment, a 6FM60 lead-acid battery is taken as an example.

[0041] (1) Place the 6FM60 battery that has passed the leak inspection in a constant temperature room at -10°C for constant temperature cooling for 10 hours;

[0042] (2) Take the density at 25℃ as 1.25g / cm 3 Add 1.5% anhydrous sodium sulfate and 1.5% ammonium sulfate with mass fraction of sulfuric acid, stir thoroughly until the dissolution is complete, and place it in a constant temperature chamber at -10°C and cool it simultaneously with the battery in (1) for 10 hours;

[0043] (3) Take out the above-mentioned battery and electrolyte, add the electrolyte to the battery with a vacuum acid adding machine, after adding acid, place the acid-added battery in a constant temperature room at 20°C for 2 hours;

[0044] (4) At the end of constant temperature cooling, use the following chemical conversion process for chemical conversion: a) Charge with a charging current of 3A for 2 hours, then charge with a chargi...

Embodiment 3

[0047] In this embodiment, a lead-acid battery of the 6FM200 model is taken as an example.

[0048] (1) Place the 6FM200 battery that has passed the leak inspection in a constant temperature room at -20°C for constant temperature cooling for 8 hours;

[0049] (2) The density is 1.27g / cm at 25℃ 3 Add anhydrous sodium sulfate with a mass fraction of 1.5%, stir thoroughly until the dissolution is complete, and place it in a constant temperature room at -20°C and cool it simultaneously with the battery in (1) for 8 hours;

[0050] (3) Take out the above-mentioned battery and electrolyte, add the electrolyte to the battery with a vacuum acid adding machine, and after adding acid, place the acid-added battery in a constant temperature room at 15°C for 2 hours;

[0051] (4) At the end of constant temperature cooling, use the following chemical conversion process for chemical conversion: a) Charge with 10A charging current for 2 hours, then charge with 50A charging current for 12 hours; b) Dis...

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Abstract

The invention provides a lead-acid accumulator non-circulating cooling water internalization process. The process includes at least two steps of chemical conversion pretreatment and chemical conversion treatment; wherein, the chemical conversion pretreatment includes 1) placing the battery to be injected with electrolyte and the electrolyte to be injected at -20-10°C; Inject the electrolyte to be injected into the battery, and then let it stand at 15-25°C; 3) When the internal temperature of the battery is ≤45°C, place it at 15-25°C for chemical conversion treatment; the chemical conversion process is: a) at 0.05 Charge with CA for 2h, then charge with 0.2~0.3CA for 8~12h; b) discharge with 0.2~0.3CA for 0.5~2h; c) charge with 0.2~0.3CA for 8~12h; d) discharge with 0.2~0.3CA for 0.5~2h ; e) charge at 0.2-0.3CA for 8-12h; f) discharge at 0.2-0.3CA for 2-4h; g) charge at 0.2-0.3CA for 8-12h; h) discharge at 0.1CA for 10h; i) discharge at 0.2-0.3CA for 10h; 0.3CA charging for 8~12h; j) charging at 0.05~0.1CA for 4~8h. The formation process shortens the formation time by 5%-50%; and after the formation, the content of lead dioxide in the positive plate of the battery is 88-94%.

Description

Technical field [0001] The invention belongs to the technical field of lead-acid battery formation, and specifically relates to a lead-acid battery non-circulating cooling water internal formation process. Background technique [0002] With the continuous development of social economy, chemical power sources have become an indispensable source of electrical energy in industry, agriculture and people's daily lives. Lead-acid batteries have the advantages of low price, easy availability of raw materials, sufficient reliability in use, suitable for high current discharge and wide ambient temperature range, and have always had an absolute advantage in chemical power sources. At present, the society’s demand for lead-acid batteries is increasing, and the production scale and output of lead-acid battery manufacturers are also increasing; however, due to the presence of lead dust, lead fumes, acid liquid and acid mist in the production process of lead-acid batteries For the purpose of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/12H01M10/44
CPCH01M10/12H01M10/446Y02E60/10Y02P70/50
Inventor 廖兆军胡金丰曹礼洪
Owner SHENZHEN CENT POWER TECH