Positive electrode lead plaster of lead acid storage battery and preparation method

Abstract

The invention belongs to the technical field of lead acid storage batteries, and particularly relates to positive electrode lead plaster of a lead acid storage battery. The positive electrode lead plaster of the lead acid storage battery is prepared from the following components in parts by weight: 1000 parts of lead powder, 110 to 120 parts of diluted sulfuric acid, 2.2 to 3.2 parts of graphite,1.2 to 2.2 parts of tetrabasic lead sulfate, 0.6 to 1.2 parts of short fiber, and 135 to 155 parts of water. Compared with the traditional positive electrode lead plaster of the lead acid storage battery, the positive electrode lead plaster of the lead acid storage battery has the advantages that the low-temperature discharge property of the storage battery is improved, the utilization rate of active substances is improved, the curing and formation time of a pole plate is shortened, the service life of the battery is prolonged, the emission of acid mist is reduced, and the environment is protected.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a positive lead paste for lead-acid batteries and a preparation method thereof. Background technique [0002] Lead-acid battery is a kind of chemical power source. It is a device that directly converts chemical energy into DC electric energy. It is used as a starting power source for vehicles and is mainly composed of a shell, positive and negative plates, separators, and electrolyte. The active material of the battery positive plate is lead dioxide, which produces lead sulfate after discharge. When producing the positive plate of the battery, lead powder is mixed with water and dilute sulfuric acid to make a lead paste, which is filled on the grid and then chemically formed. [0003] In the deep cold environment in the north, due to the increase of the viscosity of the vehicle lubricating oil, the lower the temperature, the higher the proportion of the electrolyte in the batte...

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Problems solved by technology

[0003] In the deep cold environment in the north, due to the increase of the viscosity of the vehicle lubricating oil, the lower the temperature, the higher the proportion of the electrolyte in the battery, the higher the internal resistance of the battery, the lower the starting output current of the battery, it is difficult to start the vehicle, and the low temperature resistance of the battery is poor. Difference

[0004] In order to improve the low-temperature starting performance of the battery, the concentration of dilute sulfuric acid is often increased during the manufacturing process of the positive plate, thereby increasing the porosity of the lead paste. As the number of times increases, the plate continues to expand and contract, and the binding force between the active material and the grid continues to decrease, thereby shortening the service life of the battery