Self-power-generation refrigerating unit

Abstract

The invention relates to the field of freshness-keeping and refrigerating equipment, in particular to a self-power-generation refrigerating unit. The self-power-generation refrigerating unit comprisesa transfer case, a power generator, a motor controller, a lithium battery and a compressor; the power generator generates power under driving of an output shaft of the transfer case; the motor controller converts alternating current generated by the power generator into direct current to charge the lithium battery and supplies power to the compressor so that the lithium battery is charged in timein the running process of a refrigerated truck; and therefore, the power consumption demand of the refrigerating unit during the stopping of the refrigerated truck can be met; as the power generatorgenerates larger power generation power, the loss of a belt caused by using the belt to drive the power generator is eliminated, and the self-power-generation refrigerating unit is beneficial for therefrigerated truck to stably and efficiently generate power during running; and as the power generator outputs current with high voltage, and the function of the compressor can be realized without boosting, the electric energy loss in the boosting process is reduced, and the energy utilization efficiency is high.

Description

technical field [0001] The invention relates to the field of fresh-keeping and refrigeration equipment, in particular to a self-generating refrigeration unit. Background technique [0002] The vehicle refrigeration unit is a fresh-keeping refrigeration equipment that performs refrigeration and defrosting in the compartment by driving the compressor, and is the core of the refrigerated transport vehicle. Existing refrigerating units for vehicles are usually powered by the engine of the refrigerated vehicle. Once the driver takes a break or the equipment is overhauled and other circumstances lead to long-term parking, the engine of the refrigerated vehicle does not start for a long time, which will cause the power supply of the refrigerating unit to be interrupted. The low temperature in the compartment cannot be maintained, which in turn affects the refrigeration and preservation effect of the stored items in the compartment. [0003] If a continuous power supply device, suc...

AI Technical Summary

Problems solved by technology

Existing refrigerating units for vehicles are usually powered by the engine of the refrigerated vehicle. Once the driver takes a break or the equipment is overhauled and other circumstances lead to long-term parking, the engine of the refrigerated vehicle does not start for a long time, which will cause the power supply of the refrigerating unit to be interrupted. The low temperature cannot be maintained in the compartment, which affects the refrigeration and preservation effect of the storage in the compartment

[0003] If a continuous power supply device, such as a lithium battery, can be provided for the vehicle refrigeration unit, the problem of power interruption of the above refrigeration unit can be solved, but the existing lithium battery has limited capacity and cannot meet the long-term use of the refrigeration unit. Supply needs to install a super-large lithium battery device, which increases the weight of the refrigerated truck, and the cost of the lithium battery is also high. In addition, it takes a long time to charge the lithium battery, which cannot meet the actual use needs

[0004] The current on-board generators are all low-voltage power generation, and their power is low, which cannot meet the needs of the compressor of the refrigeration unit. However, the boost inverter method is used for low-voltage power, due to the large volume of the transformer and energy loss. Higher reasons cannot be achieved

However, if in order to meet the needs of the compressor of the refrigeration unit, blindly increasing the power generation will cause damage to the belt and cannot be used normally.

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