Heat management system and ejector

Abstract

The invention discloses a heat management system. The heat management system is applied to new energy automobiles. The heat management system comprises a compressor, a high-pressure cooler, an evaporator, a battery cooler, a gas-liquid separator and an ejector, wherein the ejector comprises a first inlet, a second inlet and an outlet, the gas-liquid separator comprises a first connector, a secondconnector and a third connector, an outlet of the compressor communicates with an inlet of the high-pressure cooler, an outlet of the high-pressure cooler communicates with the first inlet of the ejector, the outlet of the ejector communicates with an inlet of the battery cooler, an outlet of the battery cooler communicates with the first connector of the gas-liquid separator, the second connectorof the gas-liquid separator communicates with the compressor, the third connector of the gas-liquid separator communicates with the evaporator, an outlet of the evaporator communicates with the second inlet of the ejector, and a refrigerant entering the ejector through the second inlet is mixed with a refrigerant entering the ejector through the first inlet and enters the battery cooler; an outlet channel of the ejector comprises a mixing part and a diffusion part, and the area of the flowing cross section of the diffusion part is gradually increased.

Description

【Technical field】 [0001] The invention relates to a system applied to a vehicle, in particular to a heat management system and an injector used in the heat management system. 【Background technique】 [0002] The system of the vehicle includes a thermal management system, especially for new energy vehicles, it is necessary to cool the battery to ensure the working performance of the battery. Since the working temperature of the battery needs to be within a certain range, in order to ensure that the battery works within the predetermined working temperature range , In the background technology, a battery cooler connected in parallel with the air conditioner evaporator is usually used to cool the battery. Since the battery cooler and the evaporator are connected in parallel in the refrigeration system, the evaporation temperature of the battery cooler is the same as that of the air conditioner evaporator, resulting in the temperature of the battery cooler being too low, which ha...

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