Lead-acid battery and manufacturing method of negative plate thereof

Abstract

The invention relates to a lead-acid battery and a manufacturing method of a negative plate thereof. The lead-acid battery comprises the negative plate, wherein the negative plate is composed of a negative plate grid and an active material layer arranged on the negative plate grid through solidifying; the active material layer is characterized in that a char paste and lead paste are uniformly mixed together so as to prepare negative wet paste, and the negative wet paste is coated on the negative plate grid, and solidified and dried to obtain finally the active material layer; the negative wet paste is prepared as follows: mixing a certain amount of char paste and the lead paste, adding a dilute sulfuric acid solution and the lead-acid battery, mixing into a sizing agent through water, adding the lead-acid battery, and adding the water for adjusting the viscosity. The lead-acid battery and the manufacturing method of a negative plate of the lead-acid battery provided by the invention have the advantages that the lead-acid battery is provided with a dual-function negative plate, the high power and rapid charge-discharge of the lead-acid battery are realized, impact on a lead electrode from a large current is avoided, the sulfation of a negative pole is avoided, and the service life of a storage battery is prolonged; and the performance index of the lead-acid battery is higher than that of the existing storage battery, and the manufacturing process, materials and operation environment-friendly property integrated quality are good.

Description

technical field [0001] The invention relates to a lead-acid storage battery and a method for making the negative plate thereof, which is a lead-acid storage battery with a dual-function negative plate that can meet the requirements of high power and fast charging and discharging. Background technique [0002] Due to the energy crisis and environmental problems caused by the development of fuel vehicles, the development of electric vehicles has become a hot spot in the world today. However, one of the difficulties in the development of electric vehicles is the power supply problem. The batteries of hybrid electric vehicles are often in a state of continuous charging and discharging cycles during driving. This requires the development of a battery with high specific energy, high specific power, stable voltage, and low price. , long life, good safety, fast charging battery. Due to its high cost performance, good power characteristics, small self-discharge, superior high and lo...

AI Technical Summary

Problems solved by technology

Due to the characteristics of high cost performance, good power characteristics, small self-discharge, superior high and low temperature performance, safe and reliable operation, and abundant resources, lead-acid batteries will become one of the main power sources for hybrid electric vehicles, but lead-acid batteries have low specific power. , can not quickly charge and discharge and other shortcomings

Lead-acid batteries have low specific power and cannot be quickly charged and discharged with large currents. In actual use, such as when starting, accelerating, and uphill, the output voltage drops greatly and it takes 3 to 5 seconds to reach the maximum value. , affecting the use and driving safety, and the usage of forcing the battery to provide a large current discharge in an instant has a great impact on the battery plate, especially the negative plate. The Achilles heel is the active substance sulfuric acid on the electrode during the high current charge and discharge process. Lead is easily passivated, which leads to a significant decrease in the capacity of the negative electrode and greatly reduces its service life

If this technology is not resolved, lead-acid batteries will lose their advantages in the hybrid electric vehicle market

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