In cold chain warehousing, lithium-ion forklifts have gradually become the main force due to their advantages of zero emissions and high efficiency. However, the special environment of cold storage with low temperature and high humidity places higher requirements on the use of equipment. It is necessary to pay attention to various points to ensure the safety and efficiency of operations.
Low temperature protection and management of batteries
Select lithium battery cells suitable for low temperature environments
The ambient temperature of the cold storage is usually below 0 ° C, and the capacity of ordinary lithium batteries will be greatly attenuated at low temperatures, and even cannot be started normally. Therefore, lithium batteries suitable for low temperature working conditions need to be selected. Such batteries have better low temperature discharge performance and can maintain stable output power in low temperature environments. At the same time, the battery storage area should be avoided from direct exposure to extreme low temperatures as much as possible, and a special thermal insulation storage area can be set up to reduce the impact of low temperature on battery life.
Standardize charging operation in low temperature environments
Charging in a low temperature environment is prone to lithium analysis, which damages the internal structure of the battery. Therefore, when charging, you need to move the forklift to the room temperature charging area, and then charge it after the battery temperature rises to a suitable range. If it cannot be moved to the room temperature area, you need to be equipped with a charger with low temperature charging protection function to monitor the battery temperature in real time, adjust the charging current and voltage, and avoid battery damage.
Low temperature adaptation modification of equipment
Optimizing hydraulic and sealing systems
The low temperature of the cold storage will increase the viscosity of the hydraulic oil, which will affect the flexibility of the lifting, steering and other operations of the forklift. Hydraulic oil with low temperature resistance needs to be selected to ensure good fluidity in low temperature environments. At the same time, the seals of the forklift need to be replaced with low temperature resistant materials to avoid low temperature hardening and cracking of the seals, oil leakage, air leakage and other problems, which will affect the normal operation of the equipment.
Strengthen the low temperature resistance of electrical components
The high humidity and low temperature environment of the cold storage can easily lead to moisture and short circuit of electrical components, so it is necessary to protect the electrical system of the forklift. For example, sealing the circuit interface, selecting electrical components with waterproof and anti-fog performance, and regularly checking the circuit insulation to prevent electrical failures due to environmental factors.
Standardize daily operation procedures
Preheating and inspection before operation
Before the forklift starts, it is necessary to preheat the forklift in advance to gradually adapt the battery, hydraulic system and electrical components to the low temperature environment to avoid damage to the components caused by direct start. At the same time, check the battery power, hydraulic oil level, tire status, etc., and confirm that there is no abnormality before starting the operation.
Rational planning of work rhythm
Battery energy consumption is faster in low temperature environment. It is necessary to plan the operation route and task volume reasonably to avoid excessive discharge of the battery caused by long-term continuous operation of the forklift. During the operation, minimize frequent starts and stops, reduce battery load, and prolong the single operation time.
Regular maintenance and upkeep
For lithium forklifts used in cold storage environments, the maintenance cycle needs to be shortened appropriately. Regularly check the charging and discharging status of the battery, the temperature of the battery, and clean the condensate on the surface of the battery in time to prevent moisture. At the same time, check the sealing of the hydraulic system, the operation of electrical components, and replace the worn parts in time to ensure that the equipment is always in good condition.
