Lithium battery forklift battery loss detection and replacement judgment standard

Lithium-ion forklifts have become a commonly used handling equipment in the warehousing and logistics industry due to their clean and efficient characteristics. Batteries, as their core power source, regularly monitor the state of wear and tear and promptly determine the timing of replacement, which play an important role in ensuring operational efficiency and reducing safety hazards.

First understand the common daily detection methods for battery loss of lithium-ion forklifts. Daily observation is the most basic way. When operating, you can pay attention to the driving speed and load performance of the vehicle. If the vehicle accelerates significantly slower and the climbing ability decreases under the same load and the same road conditions, it may be that the battery capacity has attenuated to a certain extent. At the same time, the actual cruising range after charging is also observed. After each full charge, record the time that can be continuously operated or the number of pallets handled. Compare it with the new battery status or the average level of daily normal use for many consecutive times. If there is a continuous and large decrease, it also indicates that the battery is damaged.

In addition to daily observation, basic parameter measurement can more intuitively understand the battery status. You can use a calibrated forklift battery detector to measure the voltage and internal resistance of a single battery and battery pack, which is the core basis for judging battery loss. When measuring, pay attention to the ambient temperature. It is best to do it in an environment of about 25 degrees Celsius at room temperature to avoid too high or too low temperature affecting the accuracy of the measurement results. Under normal circumstances, after being fully charged and left standing for a period of time, the voltage of a single lithium iron phosphate battery should be maintained at an operating voltage range of about 3.2 volts. The open circuit voltage at full power is slightly higher but will not exceed the standard upper limit. The internal resistance will gradually increase as the number of battery uses increases. Generally, when the internal resistance of a single battery reaches 1.5 to 2 times that of the new battery, the charging and discharging performance of the battery will decrease significantly.

Next, it is clear how to judge that the lithium battery forklift battery should be replaced. The first is that the battery life decays to the point that it cannot meet the daily operation needs, such as the amount of work that could support a complete shift. Now it is difficult to complete the core handling task even if it is plugged in once in the middle, and it cannot be improved after reasonable maintenance. At this time, it is necessary to consider replacement. The second is that there is a serious charging abnormality, such as the charging time is greatly shortened but the actual discharge time is shorter, or the charging time is too long or even cannot be fully charged. After ruling out the possibility of charger and charging interface failure, it is basically certain that there is an irreversible loss inside the battery. The third is the abnormal voltage or temperature performance. During the charging or discharging process, a single battery or battery pack experiences a sudden voltage rise or fall, or the temperature rises abnormally under normal load. These conditions not only affect the operation efficiency, but also may pose a safety hazard, requiring timely detection and replacement.

Daily maintenance of lithium-ion forklift batteries can delay the rate of loss to a certain extent, such as avoiding overcharging and over-discharging, keeping the battery surface clean and dry, and regularly checking whether the battery cable is loose. However, when the battery loss reaches the replacement standard, it should be dealt with in a timely manner to avoid affecting the overall production and operation.