The backup power system of the refrigerated truck is used to activate two cooling power sources when the vehicle engine is not working or malfunctions. Through the backup power system of the external power supply, the compressor can also maintain the temperature inside the compartment and keep the goods fresh. It can be used as a temporary cooling solution to solve some emergencies, and the refrigerated truck can also be used as a temporary cold storage.

During transportation, if there is a need to rest or if the goods are not unloaded in a timely manner, the backup power supply begins to come into play. It can continue to supply the power required for the refrigerated truck unit to work through the backup compressor when the engine is stopped, allowing the goods to maintain a good condition in a constant temperature environment. It can also play a good role in some goods with high temperature requirements.

The advantage of an independent refrigeration unit for refrigerated trucks is stability and reliability, which is also what refrigerated trucks need. As the independent refrigeration unit has a separate power output source, the refrigeration unit can still work when the refrigerated truck stalls or when the engine fails, ensuring that the goods inside the refrigerated truck will not deteriorate.

Disadvantages of integrated independent refrigeration units: The disadvantages of independent refrigeration units are that they are expensive and more complex to maintain compared to non independent units. Due to the addition of a power system, independent refrigeration units are more complex to maintain and repair compared to non independent refrigeration units, and they are technically more complex and expensive.

Advantages of non independent refrigeration units: The advantages of non independent refrigeration units are low price, simple structure, and easy maintenance and upkeep. Disadvantage: The disadvantage of non independent refrigeration units is that they rely too much on the power source of refrigerated trucks.

If the car door is frequently opened when the engine is turned off, causing the loss of the cold air beam inside the car and resulting in an increase in the temperature inside the car, or if the car malfunctions (engine failure), the refrigeration unit will also stop cooling, and the goods inside the car are easily damaged.

Refrigerated trucks are divided into two types: single temperature refrigerated trucks and double temperature refrigerated trucks. Single temperature zone refrigerated trucks refer to those with cooling and refrigeration functions, which can only ensure that the temperature inside the box reaches the low temperature required by customers.

Multi zone refrigerated trucks have two functions: heating and cooling, making them more suitable for cold weather in northern China. When the room temperature is already below zero, they transport items that require preservation temperature to achieve heating and warming effects. By the way, to achieve the function of multi temperature zone refrigerated trucks, it is necessary to divide the refrigerated trucks into compartments.

The refrigerated truck body can be divided into integral body and compartment body. The compartmentalized box divides the box into multiple sections to transport items with different temperature requirements; The overall box has no partitions, and the temperature inside the entire box is consistent.