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Method for internalizing valve-regulated lead acid storage battery
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A lead-acid battery, internalization technology, applied in lead-acid battery, lead-acid battery construction, sustainable manufacturing/processing, etc., can solve problems such as grid corrosion, short service life, inconvenient discharge capacity consistency of battery packs, etc. , to achieve the effect of reducing corrosion and ensuring consistency
Active Publication Date: 2013-11-20
CHAOWEI POWER CO LTD
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[0002] At present, the constant current charging process is commonly used in the internal production of valve-regulated lead-acid batteries. Although this process can achieve rapid charging, it is easy to overcharge, resulting in serious corrosion of the grid and severe gas evolution of the battery, which seriously affects the quality of the battery.
It is mainly manifested in the poor consistency of the static voltage of the battery after formation and charging, which is not convenient for production matching and the discharge capacity consistency of the assembled battery pack is poor, and the service life is short
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[0021] Pre-charging: 1A charging for 2 hours; (take the pre-charging current value as 0.05CA, where C represents the rated capacity of the battery, and 0.05CA is the current value of 0.05 times the rated capacity, which can be obtained as 0.05×20=1A. The following calculations are the same reason.)
[0022] Charging I: 5A charging for 3 hours;
[0023] 2.5A charging for 36 hours;
[0024] Constant voltage 2.6V / single cell, current limit 2A charging for 2 hours;
[0025] Discharge I: use 6A to discharge to an average voltage of 1.85V / cell;
[0034] Perfusion colloidal electrolyte: use concentrated sulfuric acid and water to prepare a density of 1.27g / cm 3 1% sodium sulfate and 0.1% stannous sulfate of dilute sulfuric acid are weighed and added to the dilute sulfuric acid, and the mixed solution is poured into the battery by vacuum injection;
[0035] Stand still: 2.5 hours;
[0036] Pre-charging: 2A charging for 1.5 hours; (take the pre-charging current value as 0.1CA, where C represents the rated capacity of the battery, and 0.1CA is the current value of 0.1 times the rated capacity, which can be obtained as 0.1×20=2A. The following calculations are the same reason.)
[0037] Charging I: 6A charging for 2 hours;
[0038] 3A charging for 30 hours;
[0039] Constant voltage 2.6V / single cell, current limit 2A charging for 2 hours;
[0040] Discharge I: use 10A to discharge to an average voltage of 1.80V / cell;
[0041] Charging II: 4A charging for 8 hours;
[0042] Constant voltage 2.6V / single cell, current lim...
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Abstract
The invention discloses a method for internalizing a valve-regulated lead acid storage battery. The method includes the following steps: pouring gelled electrolyte; preparing dilute sulphuric acid with the density being 1.27g / cm<3> from concentrated sulfuric acid and water; weighing sodiumsulfate which is 1-1.5 percent of the dilute sulphuric acid and 0.1-0.2 percent stannous mono-sulfate and adding the mixed solution in the dilute sulphuric acid; pouring the mixed solution into a battery through a vacuum solution filling way; standing; pre-charging; and charging I, charging II, discharging II and charging III. Compared with the prior art, the method disclosed by the invention has the advantages that overcharging or undercharging of the battery is avoided while the rapid charging is achieved, the corrosion of a plate grid and the gas evolution amount of the battery are reduced and the consistency of the voltage and the capacity of the current is ensured.
Description
technical field [0001] The invention relates to an internal formation method of a valve-controlled lead-acid storage battery. Background technique [0002] At present, the constant current charging process is commonly used in the internal production of valve-regulated lead-acid batteries. Although this process can achieve rapid charging, it is easy to overcharge, resulting in serious corrosion of the grid and severe gas evolution of the battery, which seriously affects the quality of the battery. . It is mainly manifested in the poor consistency of the static voltage of the battery after formation and charging, which is not convenient for production matching and the poor consistency of the discharge capacity of the assembled battery pack, and the service life is short. Contents of the invention [0003] The technical problem to be solved by the invention is mainly to improve the consistency of the open circuit voltage of the battery and the discharge capacity of the batte...
Claims
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