Novel power lead acid battery

Abstract

The invention discloses a novel power lead acid battery with long service life, stable working performance, strong versatility and high production efficiency. The battery comprises a battery shell, battery electrode groups, an extraction electrode and an electrolyte, the battery shell comprises a battery jar, a battery cover and a battery cover plate, each of the electrode groups is composed of positive electrode plates, negative electrode plates, a separator plate and a lead part, Sb alloy is electroplated or chemically plated on the surface of the positive electrode grating of the battery, the content of Sb in the Sb alloy is 1-100%, the gamma value of the grating structure of the battery is 0.30-0.40g / cm<2>, and the length-to-width ratio of the grating structure is 1.0-1.2. The battery can well solve the disadvantages of poor electric conduction performance, short cycle life, low versatility and large influences on the stability of a vehicle of previous electric vehicle batteries, and is a novel power battery with the advantages of high efficiency, long life and low cost.

Description

technical field [0001] The invention relates to a lead-acid power storage battery, and is a novel power lead-acid battery suitable for the field of electric vehicles. Background technique [0002] How far an electric vehicle can go depends largely on the power battery. Electric vehicle batteries on the market are usually tall and narrow, and the length-to-width ratio of the internal plate is not conducive to the distribution of conductance, and the conductance is poor, resulting in short battery cycle life and short battery life. And this type of battery is generally installed under the seat of the electric vehicle, so the center of gravity of the electric vehicle is relatively high, which is not conducive to the stability of the vehicle and wastes the space of the vehicle body. Moreover, batteries of various capacities for electric vehicle power batteries on the market are not versatile in production, which increases the development and manufacturing costs of the ...

AI Technical Summary

Problems solved by technology

However, Sb will slowly diffuse and deposit to the negative electrode of the battery. Since the hydrogen evolution overpotential of Sb is lower than that of Pb, hydrogen evolution will be accelerated after migrating to the negative electrode, which will cause the battery to lose water and heat out of control, and cause the battery to fail.

The original Sb in the grid alloy must first be corroded and then migrate to the negative electrode through the lead paste. However, when Sb is directly added to the lead paste, the migration path is shortened and it is easier to deposit on the negative electrode of the battery, resulting in premature failure of the battery.

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