Automobile air-conditioning system

Abstract

An automobile air-conditioning system comprises a compressor, a vapor liquid separator, a first heat exchanger, a second heat exchanger, a third heat exchanger and an intermediate heat exchanger. The third heat exchanger selectively exchanges heat with an external environment, the intermediate heat exchanger is provided with a first portion and a second portion which can exchange heat, and a throttling element is arranged in a pipeline passing through the second portion of the intermediate heat exchanger. When the automobile air-conditioning system is in at least one of a refrigerating mode and a heating mode, low-temperature and low-pressure refrigerants before returning to the compressor pass through the first portion of the intermediate heat exchanger, refrigerants before throttling pass through the second portion of the intermediate heat exchanger, the low-temperature and low-pressure refrigerants before returning to the compressor exchange heat with the refrigerants before throttling in the intermediate heat exchanger, the temperature of the refrigerants before throttling is further reduced, and the temperature of the low-temperature and low-pressure refrigerants before returning to the compressor is increased, so that the operating efficiency of a heat pump system is improved.

Description

technical field [0001] The invention relates to the technical field of automobile air conditioning, in particular to an electric automobile air conditioning system or a hybrid electric automobile air conditioning system. Background technique [0002] With the development of low-carbon economy, more stringent requirements are put forward for energy saving and emission reduction. Electric vehicles will become one of the aspects of future automobile development due to their energy-saving and environmental protection features. However, since electric vehicles use batteries as a power source, their air-conditioning systems are also different from the original automotive air-conditioning systems. [0003] Traditional internal combustion engine vehicles can use the waste heat of the internal combustion engine and the heat of the engine exhaust to heat the cabin, while the power of electric vehicles mainly comes from the motor, which lacks the heat of the engine to be used, making i...

AI Technical Summary

Problems solved by technology

The system does not have a complete working mode of the automotive heat pump air-conditioning system, there is no dehumidification and deicing mode, such as how to solve the problem when the window is fogged, and the system does not mention that in the heating mode, if the external condenser freezes , the system cannot work, how to solve it; in addition, when the ambient temperature is -5°C and below, the efficiency of the heat pump air conditioning system is very low, and even cannot work normally

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