Electric forklifts refer to forklifts that operate with electricity as power, and most of them work with batteries as power. The battery is a kind of battery. The battery is an energy conversion and storage device. When charging, it converts electrical energy into chemical energy and stores it. When discharging, chemical energy is converted into electrical energy and sent to the motor.
The battery is composed of positive and negative electrodes and an electrolyte. The battery is divided into an acid battery and an alkaline battery. The practical acid battery is a lead battery, which uses sulfuric acid as the electrolyte. Alkaline batteries are rarely used as energy for forklifts due to the high cost of requiring precious metals. Forklifts are mainly powered by lead-acid batteries and lithium batteries. Lithium batteries are more expensive, and lead-acid batteries are the most widely used. The active material on the positive plate of the lead-acid battery is lead oxide, the active material on the negative plate is sponge-like pure lead, and the electrolyte is a dilute sulfuric acid solution.
The main performance parameters of the battery are voltage and capacity. The amount of electricity released by the battery under the specified discharge conditions is called the capacity Q, and its unit is A h. The capacity of the battery is related to the discharge current and the temperature of the electrolyte, and is also related to the charging current. , The relative density and purity of the electrolyte are related.
The working characteristics of the battery are: the continuous discharge time is long, the discharge current is relatively uniform, and it cannot be charged at any time. In order not to make the forklift stop for charging at one time or have a longer use time after replacing the battery, the battery is required to have a larger capacity.
The rated voltage of the battery pack is determined by the selection of the lifting capacity of the forklift. The rated voltage of the electric forklift with a lifting capacity of 1 to 2 tons is generally 24v, and the voltage of each battery is 12v, which is composed of 2 batteries.
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