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High temperature weather. Forklifts may encounter various abnormal problems, such as customers asking "Why is my lithium-ion forklift becoming less durable? Is it charging more frequently? What is the reason for the high temperature of the lithium-ion battery?". Today, we will briefly introduce the common problems and solutions encountered by lithium battery forklifts in high temperature mode.

Key point!

The most important thing to pay attention to in daily use of lithium batteries in summer is the temperature of the batteries.

Forklift working diagram

Forklift charging device

Forklift Charging Diagram

Q1: Why do lithium batteries generate heat?

The principle of lithium batteries determines that heat is generated during both charging and discharging (use). When the battery pack is under light load charging and discharging, the battery is always in a dynamic balance of heating and heat dissipation; However, during continuous high load charging and discharging of the battery, or in high-temperature environments, if the heat accumulation exceeds the natural cooling rate, the battery temperature will gradually increase, and the phenomenon of the battery being too hot may occur.

Q2: What is the optimal operating temperature for lithium batteries?

The optimal working temperature for lithium batteries is 15 ℃~45 ℃, and working at an appropriate temperature can help lithium batteries maintain better charging and discharging capabilities.

Under what circumstances can the battery temperature increase:

✔ High temperature environment: under high temperature conditions or during hot summer weather, especially in southern regions;

✔ Heavy working conditions: Heavy cargo and continuous operation for more than 12 hours, such as in industries with large shipment volumes and heavy cargo such as paper, beer and beverage, chemical, and chemical fiber;

✔ High frequency of charging and discharging: The lithium batteries used in forklifts have a smaller capacity selection and require continuous charging and discharging multiple times within a day, which can easily lead to battery heating.

Q3: What are the recommendations for using lithium batteries in high-temperature environments?

Due to the impact of increased temperature on charging speed and long-term battery life, it is recommended that customers take the following measures:

✔ Try to reduce the temperature of the working environment of lithium-ion forklifts as much as possible, such as ensuring ventilation and taking sunshade measures;

✔ Reasonably arrange the use of vehicles and provide sufficient downtime and cooling time windows for lithium batteries;

✔ Increase the number of vehicles for rotational use;

✔ Interchangeable tram type, adding backup batteries for battery swapping use;

✔ Use larger capacity batteries to reduce the battery's own load;

✔ Do not charge in high temperature, high dust, or salt spray environments;

✔ When charging, keep the surface of the charging interface clean and free of particles, dust, and other debris inside the interface. Regularly clean the dust at the vent of the charger to ensure the cooling effect of the charger;

✔ In addition to daily maintenance and upkeep of lithium batteries, it is also necessary to strengthen daily monitoring and management. It is recommended to use the Kaiao Forklift Energy Management Platform EMS, which can remotely monitor the battery in real time, output energy efficiency analysis, battery fault alarms, temperature monitoring, battery health checks, etc., to achieve "energy digitization" management of the entire life cycle of lithium batteries.

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