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A method for reviving lead-acid batteries using active electrolyte

A lead-acid battery and electrolyte technology, applied in battery recycling, recycling technology, secondary battery repair/maintenance, etc., can solve the problems of small battery capacity, short battery life, difficult to handle, etc., to reduce internal resistance , Overcoming the effect of specific capacity and specific power

Active Publication Date: 2018-08-31
盐城远东电解科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for revitalizing a lead-acid battery by using an active electrolyte to solve the problems of lead-acid battery refractory sulfation, short battery life, and small battery capacity.

Method used

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  • A method for reviving lead-acid batteries using active electrolyte

Examples

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Embodiment 1

[0027] The active electrolyte used in this example is to dissolve the coordination additive glycerol CH with deionized water 2 OH-CHOH-CH 2 OH, magnesium sulfate MgSO 4 , anhydrous sodium sulfate Na 2 SO 4 , bismuth trioxide Bi 2 o 3 , stannous sulfate SnSO 4 , Phosphate H 3 PO 4 , the concentration of each coordination additive is: 3.5g / L glycerol, 2.5g / L magnesium sulfate, 3.0g / L anhydrous sodium sulfate, 1.5g / L bismuth trioxide, 0.3g / L sulfurous acid Tin, 4.5g / L phosphoric acid. Take the waste lead-acid battery, wash the shell with high pressure and dry it, then proceed to the following steps.

[0028] a. Pre-test: Take the lead-acid battery and charge it with 0.1C constant current for 9 hours, then let it stand for 2 hours, and then measure the open circuit voltage of the lead-acid battery. If the voltage is ≥12V, go to step b; if 10V<voltage<12V, go to step C ; If the voltage is ≤10V, the lead-acid battery cannot be repaired.

[0029] b. Battery activation: For...

Embodiment 2

[0034] The active electrolyte used in this embodiment is to dissolve the coordination additive glycerol, magnesium sulfate, anhydrous sodium sulfate, phosphoric acid with deionized water, and the concentration of each coordination additive is: 1.5g / L glycerol , 0.5g / L magnesium sulfate, 4.5g / L anhydrous sodium sulfate, 4.0g / L phosphoric acid. Take the waste lead-acid battery, wash the shell with high pressure and dry it, then proceed to the following steps.

[0035] a. Pre-test: Take the lead-acid battery and charge it with 0.2C constant current for 12 hours, then let it stand for 3 hours, then measure the open circuit voltage of the lead-acid battery, if the voltage is ≥12V, go to step b; if 10V<voltage<12V, go to step C ; If the voltage is ≤10V, the lead-acid battery cannot be repaired.

[0036] b. Battery activation: For the lead-acid battery with a capacity <40Ah in step a, use a 6mm drill bit to drill holes in each cell of the lead-acid battery, drilling 6 holes in total...

Embodiment 3

[0041] The active electrolyte used in this embodiment is to dissolve the coordination additive glycerin, anhydrous sodium sulfate, stannous sulfate, phosphoric acid with deionized water, and the concentration of each coordination additive is: 2.0g / L glycerine Alcohol, 0.3g / L anhydrous sodium sulfate, 2.5g / L stannous sulfate, 4.5g / L phosphoric acid. Take the waste lead-acid battery, wash the shell with high pressure and dry it, then proceed to the following steps.

[0042] a. Pre-test: Take the lead-acid battery and charge it with a constant current of 0.15C for 10 hours, then let it stand for 1 hour, and then measure the open circuit voltage of the lead-acid battery. If the voltage is ≥12V, go to step b; if 10V<voltage<12V, go to step C ; If the voltage is ≤10V, the lead-acid battery cannot be repaired.

[0043] b. Battery activation: For the lead-acid battery with a capacity <40Ah in step a, use a 6mm drill bit to drill holes in each cell of the lead-acid battery, drilling 6...

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Abstract

The invention belongs to the lead acid battery recycling field, and concretely relates to a method for reactivating a lead acid battery through utilizing an activated electrolyte and reversely charging a storage battery. The coordination additives of the activated ingredients of the active electrolyte comprise glycerol, magnesium sulfate, anhydrous sodium sulfate, bismuth trioxide, stannous sulfate and phosphoric acid, and the content of each of the coordination additives is 0.3-4.50g / L. The method for reactivating the lead acid battery through utilizing the activated electrolyte comprises the following steps: pumping the waste electrolyte from a waste lead acid battery, clarifying, electrolyzing, purifying, activating, adding the activated electrolyte to the storage battery, and reactivating the lead acid battery through the forward charging and the reverse charging. The capacitance of the waste lead acid battery reactivated through the method is improved to 90-95% from the original 60-85%, and the method has the advantages of no waste sulfuric acid discharge in the battery reactivating process, no need of the dissembling of the waste lead acid storage battery, and no involving of heavy metals comprising lead, cadmium or the like, and solves the non-pollution recycling of the waste lead acid storage battery.

Description

technical field [0001] The invention belongs to the field of transformation of lead-acid batteries, in particular to a method for revitalizing lead-acid batteries by using active electrolyte. Background technique [0002] Lead-acid batteries have experienced more than 100 years of development, and their normal charge and discharge chemical equations are: [0003] [0004] The above chemical equation is an ideal chemical principle equation. It seems that as long as it is not subject to mechanical damage, a lead-acid battery can be used endlessly to complete its charge and discharge process. In the failure of lead-acid batteries, the most common is the sulfation of the negative electrode. The reason for the sulfation of the negative electrode is the recrystallization of lead sulfate, which leads to the formation of coarse crystals that block the ion channel of the active material and reduce the PbSO 4 (lead sulfate) solubility. When the battery is discharged normally, fi...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/54
CPCY02E60/10Y02W30/84
Inventor 莫绚宗唐春正
Owner 盐城远东电解科技有限公司