The main factors affecting the battery life of forklifts
The lifespan of forklift batteries varies depending on the usage conditions, and the factors that have the greatest impact on battery lifespan are mainly the following seven aspects.
1.The larger the discharge current, the less favorable it is for the battery life of forklifts. It mainly causes the anode active material to fall off and soften. Each high rate discharge will cause the active material to become finer, approaching the shedding of the active material. When the discharge capacity is the same, the impact of high rate discharge and normal discharge rate discharge on the battery life.
2.The impact of discharge depth on battery life cannot be underestimated. The discharge depth is the ratio of the capacity released in actual use to the Nameplate capacity of the battery. The deeper the discharge, the detachment and softening of the positive electrode active material, and the more intense the corrosion of the positive electrode. With the increase of discharge depth, the volume change of the active material becomes greater, which brings greater difficulties to charging and requires more electricity to be charged. The corrosion of the positive electrode core is more likely to intensify. The relationship between the discharge depth and lifespan of traction batteries.
3.If the current is too high, it has a significant impact on the battery life. The charging current is high, and the temperature of the battery rises rapidly, promoting and accelerating positive electrode corrosion and loosening, detachment, softening, etc. of active substances. In addition, during the final charging period, if the current is high, gas evolution is very intense, and the shedding of active substances is more severe, which can easily cause short circuits.
4. The continuous insufficient charge has a great impact on the battery life. If the battery is used in the state of insufficient charge for a long time, there will be irreversible Lead(II) sulfate formed at the cathode, which is difficult to recover after charging, and the battery is easy to be low. In the state of insufficient charging, the stirring effect of the gas generated during the final charging period on the electrolyte is not very strong, so the local high concentration retention of sulfuric acid generated during charging is unfavorable for the positive electrode activity, and even leads to premature softening.
When used in an overcharged state, the battery heats up quickly, accelerating corrosion of the positive electrode core and causing degradation such as softening and detachment of active substances.
5. Investigation of battery temperature and battery life The main reason for its deterioration is the speed of chemical reactions. Usually, when the temperature rises by 10 degrees Celsius, the reaction speed will increase exponentially. This general rule is very suitable for the relationship between battery life and temperature, that is, temperature can easily cause battery aging and shorten its lifespan.
6. The relative density of electrolyte refers to the concentration of sulfuric acid in the electrolyte. High electrolyte concentration can exacerbate the corrosion of the positive electrode core, soften and detach the active substance, accelerate the oxidation and degradation of plastic components such as partitions, and increase self discharge, shortening the battery life.
7. Unused batteries are placed in a state where they are gradually aging and deteriorating, which can also shorten their service life. It is necessary to regularly replenish the battery, choose a suitable place to place the battery, and minimize the storage time as it may deteriorate. At room temperature, its degree of deterioration is equivalent to using 0.2-0.3 cycles per day.