Reasons for the decrease in battery capacity of electric forklifts

by:Jxforklift     2022-01-24
Reasons for the decrease in battery capacity of electric forklifts. Electric forklifts used to be charged for 8 hours at a time. Now it takes about 4 hours to charge. The rate of decline is very fast. Today we will share with you the reasons for the decrease in battery capacity. As various Ru0026D departments are actively developing Energy-saving and environmentally friendly products. In the industrial market, among industrial equipment vehicles, electric forklifts have quickly occupied a certain market due to their convenient handling, simple maintenance, quietness, and pollution-free characteristics. Electric forklifts are very suitable for indoor operations. At present, most of the batteries used in electric forklifts on the market are designed to be cheap. A user asked the editor, what is the reason for the rapid decrease in the capacity of the forklift battery? 1. After leaving the factory, the forklift battery cannot be installed and used in time when it arrives at the user, causing long-term storage. Long-term storage is bound to cause self-discharge and cause insufficient capacity. Because it is not correct to store the battery for a long time, it should be charged once at intervals. 2. The positive plate of the forklift battery is corroded and deformed, causing insufficient capacity. The positive plate of the forklift battery is the main factor affecting the working life of the battery. The capacity of the forklift battery charge-discharge cycle, especially the capacity drop under the deep cycle, is closely related to the quality deviation of the positive plate. 2.1 The active material on the positive grid softens and falls off. Microscopically, there are macropores and micropores in the active material. The size of the macropore exceeds 0.5cm. It is composed of many small pores. As the discharge cycle progresses, the surface of the active material shrinks. The core is formed into a coral-like structure, and the small pores are aggregated after multiple discharge cycles, which makes the large pores increase continuously, destroying the structure of the positive electrode, and causing the active material to fall off. The main reason for these situations is the high current charging and discharging of the forklift battery. Avoid the occurrence of current that should be guaranteed for charging and discharging and avoid overcharging or overdischarging. 2.2 Corrosion deformation of the positive grid The corrosion rate of the grid depends on the composition of the grid alloy, but the higher the storage temperature, the faster the corrosion rate, the deeper the discharge depth, and the more serious the corrosion. 3. Sulfation of the negative plate of the electric forklift battery: In normal operation, the PbSO4 particles on the negative plate are small, and the discharge can easily return to velvet lead, but sometimes the hard-to-reducible lead sulfate is generated inside the battery, called sulfuric acid Salinization. There are many reasons for the salting of the negative electrode, such as failure to charge in time after discharge, long-term shelving of the battery, causing serious self-discharge, excessive electrolyte concentration, long-term insufficient charging, and long-term discharge at high temperature. This lead sulfate is difficult to reduce by conventional methods. In this way, the reduction of active materials will inevitably affect the capacity of the forklift battery.
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