1. The forklift battery plate is vulcanized, and the phenomenon of this failure is as follows:
1. White coarse-grained lead sulfate is formed on the polar plate.
2. Due to the large internal resistance during discharge, the voltage drops sharply, and the starting current cannot be continuously supplied.
3. When charging, the voltage of the single cell battery rises rapidly, and the temperature of the electrolyte rises rapidly, but the relative density increases very slowly, and the phenomenon of “boiling” occurs prematurely.
The reason for this problem is:
1. Insufficient charging for a long time, or failure to charge in time after discharge, when the temperature changes, lead sulfate will recrystallize.
2. The liquid level in the battery is too low, so that the upper part of the plate is strongly oxidized in contact with the air (positive and negative plates), and the oxidized part is in contact with the electrolyte that fluctuates up and down, and a hard layer of lead sulfate with coarse grains will also be formed.
3. When the relative density of the electrolyte is too high, impure, and the external temperature changes sharply, it also promotes vulcanization. Because the relative density of the electrolyte is too high, the internal discharge of the battery is accelerated, and the effect of concentrated sulfuric acid eroding the electrode plate into sulfuric acid is strengthened, making the electrode plate easy to vulcanize.
1. Always be in a state of sufficiency.
2. The discharged battery should be sent for charging in time.
3. The liquid level should meet the requirements.
2. The active material on the battery plate of the forklift truck falls off, and the falling off of the active material generally occurs on the positive plate, which may cause a short circuit of the plate in severe cases.
1. There are precipitates in the electrolyte.
2. When charging, the electrolyte has brown substances rising from the bottom, but the voltage rises quickly, the electrolyte boiling phenomenon is earlier than that of normal batteries, and the charging time is greatly shortened.
3. The discharge capacity drops significantly.
The reason for this problem is:
1. The quality of the plate is too poor.
2. The charging and discharging currents are too large, and the plates are bent and deformed.
3. The forklift battery is not fixed firmly, and the vibration caused by dragging and so on will cause the active material to fall off.
3. The plate is short-circuited, and the phenomenon of this kind of failure is:
1. The open circuit voltage is low.
2. During high current discharge, the terminal voltage drops rapidly, or even drops to zero.
3. During the charging process, the voltage and the density of the electrolyte rise slowly, and the even value does not rise any more. There are few bubbles at the end of the charging, but the temperature of the electrolyte rises rapidly.
The reason for the failure is:
1. The quality of the separator is not high or damaged, so that the positive plates are in contact and short-circuited.
2. The active material is deposited too much at the bottom of the forklift battery, and the metal conductor falls between the positive and negative plates, resulting in a short circuit of the plates.
1. Prevent the active substance from falling off in large quantities.
2. Remove the active substances that have fallen off in time.