Ultralow-water-loss high-temperature-resistant solution-enriched lead-acid storage battery and preparation method thereof

Abstract

The invention relates to an ultralow-water-loss high-temperature-resistant solution-enriched lead-acid storage battery and a preparation method thereof. According to the technical scheme, through providing a rare-earth alloy positive pole grid, a pure-lignin negative pole formula, electrolyte concentration, a PE partition plate structure and a positive and negative pole active substance proportioning ratio, the water loss speed of the lead-acid storage battery is comprehensively lowered, the capacity matching of positive and negative poles of a single-unit storage battery is achieved, partial-pressure paramount gassing aggravation caused by mismatched active substance amount is reduced, the water loss speed of the battery is lowered, and the oxygen evolution potential of pole plates is lowered. According to the pure-lignin negative pole formula provided by the invention, humic acid is replaced with lignin, thus, the impurity content of the pole plates is lowered, the water loss of thebattery is lowered, and other properties are not lowered. Through applying and optimizing plate grid alloy, a process formula, electrolyte concentration and functional materials, the difficult problemof the traditional solution-enriched lead-acid storage batteries that the water loss speed is high is solved.

Description

Technical field [0001] The invention belongs to the technical field of storage batteries, and specifically relates to an ultra-low water loss, high-temperature, high-temperature, liquid-rich lead-acid storage battery and a preparation method thereof. Background technique [0002] The electrodes of flooded lead-acid batteries are mainly made of lead and its oxides, and the electrolyte is a dilute sulfuric acid solution. Although flooded lead-acid batteries have lower energy and shorter deep cycle life compared to lithium batteries and nickel-metal hydride batteries, due to their small self-discharge, superior high and low temperature performance, mature production and recycling technology, and low price advantages, the battery is still One of the world's largest output and most versatile starting power sources. [0003] The flooded lead-acid storage is a vented design, which will produce electrolyzed water and water evaporation loss during use, which is especially significant when ...

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Problems solved by technology

[0013] 3) Process formula: ①The bonding strength of the lead paste is poor, the active material softens and falls off quickly, and the voltage shared by the unit active material in the later period is too high, resulting in intensified gassing; ②Battery charging acceptance is poor, and the charging utilization rate is low, which intensifies the hydrolysis reaction; ③The electrolyte is easy to stratify. After stratification, the internal resistance of the battery is relatively large, and micro-battery reactions occur, which intensifies hydrolysis

[0014] 4) Structural design: unreasonable labyrinth structure design, unreasonable exhaust design, etc. lead to excessive exhaust and water evaporation overflow; the mismatch of positive and negative electrode capacities of the single battery leads to high one-way partial pressure, intensified gas evolution, and battery Accelerated water loss

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