A kind of lead storage battery forming method

Abstract

The invention discloses a method for forming a lead storage battery, which comprises the following steps: (1) adding an aqueous solution of sulfate salt with 1.1 to 1.4 times the saturated liquid absorption and a mass concentration of 0.4 to 0.8% into the battery, and then performing the first stage of formation, Control the boiling point of water at 50-60°C by vacuuming the inside of the battery; (2) Add 1.2-1.8 times the saturated liquid absorption capacity and a sulfuric acid solution with a density of 1.19-1.25g / ml into the battery, and then carry out the second stage of formation , Control the boiling point of water to 40-50°C by vacuuming the inside of the battery. In the present invention, by first adding an aqueous solution containing sulfate, there is no temperature rise of the battery, and the time for the formation to maintain alkaline conditions is significantly prolonged. The temperature of the formation is controlled by the vacuum degree at 50-60°C, and a large current can be used for rapid formation, creating benefits for α- PbO 2 Formation conditions, improve α‑PbO 2 content. Then, in the second stage, a certain concentration of sulfuric acid solution is added, and the battery formation is continued under a certain degree of vacuum to achieve rapid formation. α‑PbO after battery formation 2 The higher the content, the longer the life of the battery.

Description

technical field [0001] The invention relates to the technical field of lead storage batteries, in particular to a method for forming lead storage batteries. Background technique [0002] In the production process of lead-acid batteries, the batteries need to be formed. When the battery is formed, due to the high density of the electrolyte used, the temperature rises when the acid is added. Generally, a small current is used for the formation, and the formation time is long. After the formation, the positive electrode α-PbO 2 If the content is small, the life of the battery will be significantly shortened. [0003] For example, the invention with the publication number CN105186055A discloses a method for internally forming a lead-acid storage battery, and the following steps are carried out in sequence: step (a): charge with 0.03C2~0.06C2 for 0.2-0.5 hours; then charge with 0.12C2~0.16C2 0.2-0.5 hours; step (b): cycle charge and discharge with degraded electrode: transfer t...

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Problems solved by technology

[0006] The object of the present invention is to: when adopting battery formation, a kind of improving α-PbO 2 Method, to solve the α-PbO caused by battery formation in the prior art 2 The problem of low content and short battery life, in order to achieve the above purpose, the present invention adopts the following technical solutions:

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