Colloidal electrolyte formula for lead-acid storage battery

Abstract

The invention discloses a colloidal electrolyte formula for a lead-acid storage battery, comprising the following components in percentage by weight: 0.8-10 percent of fumed silica, 0.4-0.8 percent of polyethylene glycol, 0.03-0.6 percent of bismuth trioxide, 0.05-0.3 percent of antimonous oxide, 0.05-0.5 percent of stannous sulfate, 0.3-1 percent of phosphoric acid, 0.5-2 percent of anhydrous sodium sulfate, 25-40 percent of sulfuric acid and 50-60 percent of water. The invention has the advantages that: after using a colloidal electrolyte of the invention, with regard to the lead-calcium alloy storage battery, the phenomenon that a common colloidal electrolyte cannot adapt to a lead-calcium alloy storage battery can be effectively improved, the early-stage capacity attenuation effect of the lead-calcium alloy battery can be improved, the deep electrical discharge cycle life, the low-temperature heavy-current charging and discharging performances and the rechargeable performance after being discharged of the lead-calcium battery can be further enhanced, the use safety of the battery can be improved and the overall use cost of the battery can be reduced.

Description

technical field [0001] The invention relates to a colloidal electrolyte formula for a lead-acid storage battery. Background technique [0002] As an important part of human transportation in the future, electric vehicles have been recognized. At present, valve-regulated sealed lead-acid batteries are generally used as the main power source for electric vehicles. With the rapid development of the electric vehicle industry, the cycle life of batteries and the Higher requirements are put forward for charging capacity, maintenance-free performance, and use safety. As a power battery, in order to provide reliability for deep cycle life, lead-antimony alloy batteries are mostly used, but there are batteries made of lead-antimony alloy. The corrosion rate of the grid is fast, and the rapid loss of water due to the accumulation of antimony will lead to thermal runaway deformation and rupture of the tank body. Improper maintenance will cause premature end of life. In order to overco...

AI Technical Summary

Problems solved by technology

[0002] As an important part of human transportation in the future, electric vehicles have been recognized. At present, valve-regulated sealed lead-acid batteries are generally used as the main power source for electric vehicles. With the rapid development of the electric vehicle industry, the cycle life of batteries and the Higher requirements are put forward for charging capacity, maintenance-free performance, and use safety. As a power battery, in order to provide reliability for deep cycle life, lead-antimony alloy batteries are mostly used, but there are batteries made of lead-antimony alloy. The corrosion rate of the grid is fast, and the rapid loss of water due to the accumulation of antimony will lead to thermal runaway deformation and rupture of the tank body. Improper maintenance will cause premature end of life

In order to overcome these shortcomings, electric vehicle batteries are gradually transitioning to lead-calcium alloy materials. Although the problem of rapid water loss during battery use has been solved and the maintenance-free performance has been improved, the presence of calcium in lead-calcium alloys has also brought The deep cycle capacity of the battery decays quickly, the life is short, the rechargeability after over-discharge is poor, and the active material is easy to soften and fall off.

Moreover, these shortcomings are more prominent in batteries used in series