Vehicle thermal management system and vehicle

Abstract

The invention discloses a vehicle thermal management system and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of poor vehicle use experience of a user. The vehicle thermal management system includes a compressor, a first condenser, and a refrigerator system. An inlet of the first condenser communicates with an outlet of the compressor. The refrigerator system includes a refrigerator flow path connected between an outlet of the first condenser and an inlet of the compressor. The refrigerator flow path includes at least a first refrigerator evaporator and a second refrigerator evaporator.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle thermal management system and a vehicle. Background Art

[0002] With the improvement of people's living standards and the development of the automobile industry, people's demand for car refrigerators is also increasing. In general, a separate refrigerator is usually set up inside the car to provide users with cold or hot drinks. However, if there is only one refrigerator in the car, it may not meet the different needs of different users, which may affect the user experience of the vehicle. Summary of the invention

[0003] The purpose of the present invention is to provide a vehicle thermal management system and a vehicle, aiming to solve the problem of poor user experience of the vehicle.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] In a first aspect of the present application, the present invention provides a vehicle thermal management system, comprising a compressor, a first condenser and a refrigerator system. The inlet of the first condenser is connected to the outlet of the compressor. The refrigerator system comprises a refrigerator flow path, which is connected between the outlet of the first condenser and the inlet of the compressor. The refrigerator flow path comprises at least a first refrigerator evaporator and a second refrigerator evaporator.

[0006] Through the arrangement of the first refrigerator evaporator and the second refrigerator evaporator, the vehicle can be equipped with two vehicle refrigerators at the same time, so as to realize the use requirements of different users for the refrigerator system at the same time, meet the needs of different users, and improve the user experience of the vehicle.

[0007] At the same time, only one compressor is needed to realize the refrigeration function of the first refrigerator evaporator and the second refrigerator evaporator. Compared with the first refrigerator evaporator and the second refrigerator evaporator being connected to one compressor respectively, the structure of the refrigerator system can be simplified, the utilization rate of the space in the vehicle can be improved, and the impact of the noise generated when the compressor is working on the user can be reduced, thereby further improving the user experience of the vehicle.

[0008] In some embodiments, the refrigerator flow path includes a first flow path and a second flow path arranged in parallel. The first flow path includes a first refrigerator evaporator, the inlet of the first refrigerator evaporator is connected to the outlet of the first condenser, and the outlet of the first refrigerator evaporator is connected to the inlet of the compressor. The second flow path includes a second refrigerator evaporator, the inlet of the second refrigerator evaporator is connected to the outlet of the first condenser, and the outlet of the second refrigerator evaporator is connected to the inlet of the compressor.

[0009] In this way, the refrigerant flowing out from the outlet of the first condenser can enter the first refrigerator evaporator and the second refrigerator evaporator respectively, so as to absorb heat in the first refrigerator evaporator and the second refrigerator evaporator to achieve refrigeration of the refrigerator system.

[0010] In some embodiments, the refrigerator system further comprises a first coaxial tube, the first coaxial tube comprising a first outer tube and a first inner tube. The inlet of the first outer tube is communicated with the outlet of the first condenser, and the outlet of the first outer tube is communicated with the inlet of the first refrigerator evaporator. The inlet of the first inner tube is communicated with the outlet of the first refrigerator evaporator, and the outlet of the first inner tube is communicated with the inlet of the compressor.

[0011] Through the above arrangement, the high-pressure medium-temperature refrigerant flowing out of the outlet of the first condenser will first flow through the first outer tube before flowing into the inlet of the first refrigerator evaporator, and the gaseous refrigerant flowing out of the outlet of the first refrigerator evaporator will first flow into the first inner tube through the inlet of the first inner tube, then flow out from the outlet of the first inner tube, and flow into the compressor from the inlet of the compressor. In this way, the high-temperature and high-pressure refrigerant flowing in the first outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the first inner tube, heat the low-temperature and low-pressure refrigerant in the first inner tube, avoid frosting of water vapor near the first inner tube at the first inner tube, thereby ensuring the safety of electronic components around the first inner tube when working. At the same time, through the arrangement of the first coaxial tube, the outlet superheat of the first refrigerator evaporator can be increased, and the compressor liquid hammer can be avoided, thereby protecting the compressor.

[0012] In some embodiments, the refrigerator system further comprises a second coaxial tube, the second coaxial tube comprising a second outer tube and a second inner tube. The inlet of the second outer tube is communicated with the outlet of the first outer tube, and the outlet of the second outer tube is communicated with the inlet of the second refrigerator evaporator. The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator, and the outlet of the second inner tube is communicated with the inlet of the compressor.

[0013] Through the above arrangement, part of the high-pressure medium-temperature refrigerant flowing out of the outlet of the first outer tube will enter the first refrigerator evaporator through the inlet of the first refrigerator evaporator, and the other part will enter the second outer tube through the inlet of the second outer tube, flow in from the outlet of the second outer tube, and then enter the second refrigerator evaporator through the inlet of the second refrigerator evaporator. The gaseous refrigerant flowing out of the outlet of the second refrigerator evaporator will first flow into the second inner tube through the inlet of the second inner tube, then flow out from the outlet of the second inner tube, and flow into the compressor from the inlet of the compressor.

[0014] In this way, the high-temperature and high-pressure refrigerant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube, heating the low-temperature and low-pressure refrigerant in the second inner tube, avoiding frost formation of water vapor near the second inner tube on the second inner tube, thereby ensuring the safety of electronic components around the second inner tube during operation. At the same time, by setting the second coaxial tube, the outlet superheat of the second refrigerator evaporator can be increased, avoiding compressor liquid hammer, thereby protecting the compressor.

[0015] At the same time, since the first outer tube and the second outer tube are arranged in series, the high-pressure medium-temperature refrigerant flowing out from the outlet of the first condenser can exchange heat with the refrigerant in the first inner tube and the second inner tube in turn at the first outer tube and the second outer tube. Compared with the first outer tube and the second outer tube being arranged in parallel, the heat in the high-pressure medium-temperature refrigerant flowing out from the outlet of the first condenser can be utilized in a step-by-step manner, thereby improving the energy utilization efficiency in the vehicle thermal management system and improving the energy-saving effect of the vehicle.

[0016] In some embodiments, the refrigerator system further comprises a second coaxial tube, the second coaxial tube further comprising a second outer tube and a second inner tube. The inlet of the second outer tube is communicated with the outlet of the first condenser, and the outlet of the second outer tube is communicated with the inlet of the second refrigerator evaporator. The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator, and the outlet of the second inner tube is communicated with the inlet of the compressor.

[0017] Through the above arrangement, the high-pressure medium-temperature refrigerant flowing out of the outlet of the first condenser will first flow through the second outer tube before flowing into the inlet of the second refrigerator evaporator, and the gaseous refrigerant flowing out of the outlet of the second refrigerator evaporator will first flow into the second inner tube through the inlet of the second inner tube, then flow out from the outlet of the second inner tube, and flow into the compressor from the inlet of the compressor. In this way, the high-temperature and high-pressure refrigerant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube, heat the low-temperature and low-pressure refrigerant in the second inner tube, avoid frosting of water vapor near the second inner tube at the second inner tube, thereby ensuring the safety of the electronic components around the second inner tube when working. At the same time, through the arrangement of the second coaxial tube, the outlet superheat of the second refrigerator evaporator can be increased, and the compressor liquid hammer can be avoided, thereby protecting the compressor.

[0018] In some embodiments, the refrigerator system further comprises a first expansion valve and a second expansion valve. The first expansion valve is arranged in the first flow path. The inlet of the first expansion valve is communicated with the outlet of the first condenser, and the outlet of the first expansion valve is communicated with the inlet of the first refrigerator evaporator. The second expansion valve is arranged in the second flow path. The inlet of the second expansion valve is communicated with the outlet of the first condenser, and the outlet of the second expansion valve is communicated with the inlet of the second refrigerator evaporator.

[0019] In some embodiments, the refrigerator system further comprises a first box, a first inner liner and a first heating element. The first inner liner is disposed in the first box. The first refrigerator evaporator is disposed in the first box and outside the first inner liner. The first heating element is disposed in the first box and outside the first inner liner, and is used to heat the first inner liner.

[0020] Through the above settings, when the user needs to heat the food placed in the first inner tank, the first heating element can be started to heat the first inner tank, thereby heating the food inside the first inner tank to meet the user's heating demand for the refrigerator system and improve the user's vehicle experience.

[0021] In some embodiments, the refrigerator system further comprises a second box, a second inner liner and a second heating element. The second inner liner is disposed in the second box. The second refrigerator evaporator is disposed in the second box and outside the second inner liner. The second heating element is disposed in the second box and outside the second inner liner for heating the second inner liner.

[0022] Through the above settings, when the user needs to heat the food placed in the second inner tank, the second heating element can be started to heat the second inner tank, thereby heating the food inside the second inner tank to meet the user's heating needs for the refrigerator system and improve the user's vehicle experience.

[0023] In some embodiments, the vehicle thermal management system further includes a third expansion valve and an air conditioning evaporator. The inlet of the third expansion valve is communicated with the outlet of the first condenser. The inlet of the air conditioning evaporator is communicated with the outlet of the third expansion valve, and the outlet of the air conditioning evaporator is communicated with the inlet of the compressor.

[0024] Through the above arrangement, when the cockpit needs to be cooled, the third expansion valve can be opened so that the refrigerant flowing out of the outlet of the first condenser can flow into the third expansion valve from the inlet of the third expansion valve, and then flow out from the outlet of the third expansion valve, and flow into the air-conditioning evaporator from the inlet of the air-conditioning evaporator, so that the refrigerant absorbs the heat of the cockpit in the air-conditioning evaporator, thereby realizing cooling of the cockpit.

[0025] In some embodiments, the vehicle thermal management system further includes a first regulating valve, an inlet of the first regulating valve is communicated with an outlet of the air-conditioning evaporator, and an outlet of the first regulating valve is communicated with an inlet of the compressor.

[0026] Through the above arrangement, the flow of the refrigerant in the air conditioner evaporator can be adjusted by the first regulating valve, thereby controlling the evaporation pressure and evaporation temperature of the air conditioner evaporator, thereby achieving different refrigeration temperatures. At the same time, when the first refrigerator evaporator or the second refrigerator evaporator is in operation, the evaporation pressure and evaporation temperature of the air conditioner evaporator can be adjusted to avoid the evaporation pressure and evaporation temperature of the air conditioner evaporator being affected by the first refrigerator evaporator or the second refrigerator evaporator.

[0027] In some embodiments, the vehicle thermal management system further includes a first switching valve, an inlet of the first switching valve is connected to an outlet of the compressor, and an outlet of the first switching valve is connected to an inlet of the first condenser.

[0028] Since the inlet of the first switch valve is connected to the outlet of the first condenser, and the outlet of the first switch valve is connected to the inlet of the third expansion valve, the on-off state of the pipeline can be controlled by the first switch valve to realize the operation and stop of the air-conditioning system.

[0029] In some embodiments, the vehicle thermal management system further includes a fourth expansion valve and a battery heat exchanger. The first end opening of the fourth expansion valve is connected to the outlet of the first condenser. The first end opening of the battery heat exchanger is connected to the second end opening of the fourth expansion valve, and the second end opening of the battery heat exchanger is connected to the inlet of the compressor.

[0030] In some embodiments, the vehicle thermal management system further includes a second regulating valve, a first end opening of the second regulating valve is in communication with a second end opening of the first battery heat exchanger, and a second end opening of the second regulating valve is in communication with an inlet of the compressor.

[0031] When the battery generates heat during driving, the battery needs to be cooled in time to maintain the high power output of the battery. The cooling process of the battery in this application is as follows: the refrigerant in a high temperature and high pressure state flowing out of the outlet of the compressor is converted into a refrigerant in a medium temperature and high pressure state through the heat dissipation of the first condenser, and then converted into a refrigerant in a low temperature and low pressure state through the throttling of the fourth expansion valve, and then enters the battery heat exchanger. At this time, the battery heat exchanger acts as an evaporator to exchange heat with the battery. The low temperature refrigerant absorbs the heat of the battery and enters the first end opening of the second regulating valve, and finally flows back to the inlet of the compressor through the second opening of the second regulating valve, completing the cooling cycle of the battery. In the cooling cycle of the battery, the second regulating valve can adjust the evaporation pressure of the battery heat exchanger by the opening of the valve core, thereby controlling the cooling temperature of the battery.

[0032] When the vehicle is cold-started in winter, the battery needs to be heated so that the battery can start normally. The heating process of the battery in this application is as follows: the refrigerant in a high-temperature and high-pressure state flows out from the outlet of the compressor and enters the battery heat exchanger through the second end opening of the second regulating valve. At this time, the battery heat exchanger acts as a condenser to exchange heat with the battery. The high-temperature refrigerant provides heat to the battery through heat conduction, heat convection, and heat radiation. After absorbing the heat of the refrigerant, the battery can heat up and start normally. The refrigerant after the heat exchange is completed flows back to the inlet of the compressor through the second end of the fourth expansion valve, completing the heating cycle of the battery. In the heating cycle of the battery, the second regulating valve can control the temperature of the second end opening of the first battery heat exchanger by the opening of the valve core.

[0033] In some embodiments, the vehicle thermal management system further includes a first one-way valve, an inlet of the first one-way valve is connected to an outlet of the first condenser, and an outlet of the first one-way valve is connected to a first end opening of the fourth expansion valve.

[0034] In some embodiments, the vehicle thermal management system further includes a second switch valve, a third switch valve, and a second one-way valve. The inlet of the second switch valve is communicated with the outlet of the compressor, and the outlet of the second switch valve is communicated with the second end opening of the second regulating valve. The inlet of the third switch valve is communicated with the second end opening of the second regulating valve, and the outlet of the third switch valve is communicated with the inlet of the compressor. The inlet of the second one-way valve is communicated with the first end opening of the fourth expansion valve, and the outlet of the second one-way valve is communicated with the inlet of the compressor.

[0035] In some embodiments, the vehicle thermal management system further includes a third one-way valve, an inlet of the third one-way valve is connected to an outlet of the first condenser, and an outlet of the third one-way valve is connected to a first end opening of the fourth expansion valve.

[0036] In some embodiments, the vehicle thermal management system further includes a second condenser, a fifth expansion valve, and a sixth expansion valve. The inlet of the second condenser is communicated with the outlet of the compressor. The inlet of the fifth expansion valve is communicated with the outlet of the second condenser. The inlet of the sixth expansion valve is communicated with the outlet of the fifth expansion valve and the outlet of the second one-way valve, and the outlet of the sixth expansion valve is communicated with the inlet of the compressor.

[0037] Based on the above arrangement, in the cooling cycle of the battery, the third one-way valve, the first one-way valve, the second regulating valve and the third switch valve are opened, and the second switch valve and the sixth expansion valve are closed.

[0038] In this way, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor can be converted into a medium-temperature and high-pressure refrigerant through the heat dissipation of the first condenser, and then flow through the first one-way valve and the third one-way valve in sequence, and then flow into the first end opening of the fourth expansion valve respectively, and after throttling, it is converted into a low-temperature and low-pressure refrigerant, and then flows into the battery heat exchanger to cool the battery. The cooled refrigerant flows through the second regulating valve and then flows back to the inlet of the compressor through the third switch valve.

[0039] In the heating cycle of the battery, the second switch valve, the second regulating valve, the second check valve and the sixth expansion valve are opened, and the first switch valve and the third switch valve are closed.

[0040] In this way, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor flows into the second regulating valve via the second switch valve, flows into the battery heat exchanger through the second regulating valve to heat the battery, and then enters the second one-way valve after throttling and cooling by the fourth expansion valve, flows into the inlet of the sixth expansion valve through the outlet of the second one-way valve, and then flows into the inlet of the compressor through the outlet of the sixth expansion valve.

[0041] When the cabin needs to be heated in winter, the sixth expansion valve can be opened, and the first switch valve and the second switch valve can be closed, so that the high-temperature refrigerant of the compressor can directly enter the second condenser for heat dissipation, heat the low-temperature air in the cabin, thereby raising the temperature of the cabin and providing a comfortable environment for users. The refrigerant after heat exchange enters the fifth expansion valve for throttling and is converted into medium-temperature and high-pressure refrigerant, and then flows back to the compressor through the sixth expansion valve to complete the heating cycle of the cabin. The vehicle thermal management system also includes a fifth one-way valve, the inlet of the fifth one-way valve is connected to the outlet of the fifth expansion valve and the outlet of the second one-way valve, and the outlet of the fifth one-way valve is connected to the outlet of the first condenser, the inlet of the first refrigerator evaporator, and the inlet of the second refrigerator evaporator.

[0042] Through the above arrangement, when the battery is heated and the refrigerator system is required to be cooled, the fifth one-way valve can be opened, so that the throttled refrigerant flowing out from the outlet of the second one-way valve flows into the fifth one-way valve, and then flows into the first refrigerator evaporator and the second refrigerator evaporator, absorbs heat in the first refrigerator evaporator and the second refrigerator evaporator, and then flows back to the compressor, thereby achieving heating of the battery and cooling of the refrigerator system.

[0043] In some embodiments, the portion of the first flow path between the outlet of the first refrigerator evaporator and the inlet of the compressor is the first flow segment. The portion of the second flow path between the outlet of the second refrigerator evaporator and the inlet of the compressor is the second flow segment. The vehicle thermal management system also includes an engine cooling system, which is thermally connected to the first flow segment and / or the second flow segment.

[0044] Through the above arrangement, the heat emitted by the vehicle engine when working and absorbed by the coolant in the engine cooling system can be used to heat the first flow section, thereby avoiding frost at the outlet of the first refrigerator evaporator, increasing the outlet superheat of the first refrigerator evaporator, avoiding compressor liquid hammer, and thus protecting the compressor. At the same time, the heat emitted by the vehicle engine when working and absorbed by the coolant in the engine cooling system can be used to heat the first flow section, thereby avoiding frost at the outlet of the second refrigerator evaporator, increasing the outlet superheat of the second refrigerator evaporator, avoiding compressor liquid hammer, and thus protecting the compressor.

[0045] In some embodiments, the vehicle thermal management system further includes an engine cooling system. The refrigerator system further includes a first coaxial tube, the first coaxial tube including a first outer tube and a first inner tube. The first outer tube is connected to the engine cooling system. The inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator, and the outlet of the first inner tube is connected to the inlet of the compressor.

[0046] Through the above arrangement, since the first outer tube is connected to the engine cooling system, the coolant in the engine cooling system can flow through the first outer tube, and since the inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator, and the outlet of the first inner tube is connected to the inlet of the compressor, the coolant flowing in the first outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the first inner tube. In this way, the coolant in the first outer tube can heat the low-temperature and low-pressure refrigerant in the first inner tube, avoiding the frost of the water vapor near the first inner tube at the first inner tube, thereby ensuring the safety of the electronic components around the first inner tube when working. At the same time, through the arrangement of the first coaxial tube, the outlet superheat of the first refrigerator evaporator can be increased, and the compressor liquid hammer can be avoided, thereby protecting the compressor.

[0047] In some embodiments, the refrigerator system further comprises a second coaxial tube, the second coaxial tube comprising a second outer tube and a second inner tube. The second outer tube is connected to the engine cooling system. The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator, and the outlet of the second inner tube is communicated with the inlet of the compressor.

[0048] Through the above arrangement, after the coolant in the engine cooling system enters the first outer tube from the inlet of the first outer tube, part of it will flow back to the engine cooling system from the outlet of the first outer tube, and part of it will enter the second outer tube through the inlet of the second outer tube, and then flow back to the first outer tube from the outlet of the second outer tube, and then flow back to the engine cooling system from the outlet of the first outer tube. In this way, the coolant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube. Thereby, the low-temperature and low-pressure refrigerant in the second inner tube is heated, and the water vapor near the second inner tube is prevented from frosting at the second inner tube, thereby ensuring the safety of the electronic components around the second inner tube when working. At the same time, through the arrangement of the second coaxial tube, the outlet superheat of the second refrigerator evaporator can be increased, and the compressor liquid hammer can be avoided, thereby protecting the compressor.

[0049] In some embodiments, the inlet of the first outer tube and the outlet of the second outer tube are connected to the engine cooling system, and the inlet of the second outer tube is connected to the outlet of the first outer tube.

[0050] Through the above arrangement, the coolant in the engine cooling system will first enter the first outer tube through the inlet of the first outer tube, then enter the second outer tube through the outlet of the first outer tube and the inlet of the second outer tube, and flow into the engine cooling system from the outlet of the second outer tube, thereby achieving heating of the first inner tube and the second inner tube.

[0051] In some embodiments, the outlet of the first outer tube and the inlet of the second outer tube are connected to the engine cooling system, and the inlet of the first outer tube is in communication with the outlet of the second outer tube.

[0052] Through the above arrangement, the coolant in the engine cooling system will first enter the second outer tube through the inlet of the second outer tube, then enter the first outer tube through the outlet of the second outer tube and the inlet of the first outer tube, and flow into the engine cooling system from the outlet of the first outer tube, thereby achieving heating of the first inner tube and the second inner tube.

[0053] In some embodiments, the first inlet and the first outlet of the first outer tube are connected to the engine cooling system, the inlet of the second outer tube is connected to the second outlet of the first outer tube, and the outlet of the second outer tube is connected to the second inlet of the first outer tube.

[0054] Through the above arrangement, after the coolant in the engine cooling system enters the first outer tube from the first inlet of the first outer tube, part of it will flow back to the engine cooling system from the first outlet of the first outer tube, and part of it will enter the second outer tube through the second outlet of the first outer tube and the inlet of the second outer tube, and then flow back to the first outer tube from the outlet of the second outer tube and the second inlet of the first outer tube, and then flow back to the engine cooling system from the first outlet of the first outer tube, thereby achieving heating of the first inner tube and the second inner tube.

[0055] In some embodiments, the inlet and outlet of the first outer tube are connected to the engine cooling system, and the inlet and outlet of the second outer tube are connected to the engine cooling system.

[0056] Through the above arrangement, the coolant in the engine cooling system can flow into the first outer tube and the second outer tube respectively, so as to heat the first inner tube and the second inner tube.

[0057] In some embodiments, the vehicle thermal management system further includes an engine cooling system. The refrigerator system further includes a second coaxial tube, the second coaxial tube including a second outer tube and a second inner tube. The second outer tube is connected to the engine cooling system. The inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator, and the outlet of the second inner tube is connected to the inlet of the compressor.

[0058] Through the above arrangement, since the second outer tube is connected to the engine cooling system, the coolant in the engine cooling system can flow through the second outer tube, and since the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator, and the outlet of the second inner tube is connected to the inlet of the compressor, the coolant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube. In this way, the coolant in the second outer tube can heat the low-temperature and low-pressure refrigerant in the second inner tube, avoiding the frost of the water vapor near the second inner tube at the second inner tube, thereby ensuring the safety of the electronic components around the second inner tube when working. At the same time, through the arrangement of the second coaxial tube, the outlet superheat of the second refrigerator evaporator can be increased, and the compressor liquid hammer can be avoided, thereby protecting the compressor.

[0059] In some embodiments, the engine cooling system includes an engine heat exchanger and a four-way valve. The inlet of the first outer tube is connected to the outlet of the engine heat exchanger. The outlet of the first outer tube is connected to the first end of the four-way valve, and the second end of the four-way valve is connected to the inlet of the engine heat exchanger. When the first refrigerator evaporator or the second refrigerator evaporator is in operation, the first end of the four-way valve is connected to the second end of the four-way valve.

[0060] Through the above arrangement, when the first refrigerator evaporator or the second refrigerator evaporator is in operation, the coolant in the engine heat exchanger can flow out from the outlet of the engine heat exchanger after absorbing the heat emitted by the engine when it is working, and then flow into the first outer tube from the inlet of the first outer tube to heat the refrigerant in the first inner tube to avoid the water vapor frosting around the first inner tube. And the coolant in the first outer tube can enter the second outer tube through the inlet of the second outer tube to heat the refrigerant in the second inner tube to avoid the water vapor frosting around the second inner tube. The coolant in the second outer tube will flow out from the outlet of the second outer tube and re-enter the first outer tube, and flow out from the outlet of the first outer tube together with the coolant in the first outer tube, and then enter the engine heat exchanger from the inlet of the engine heat exchanger to re-absorb the heat emitted by the engine when it is working, thereby achieving the heat dissipation of the engine and the heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube.

[0061] In some embodiments, the engine cooling system further includes a three-way valve, the first end of the three-way valve is connected to the outlet of the engine heat exchanger, the second end of the three-way valve is connected to the inlet of the first outer tube, and the third end of the three-way valve can be connected to the third end of the four-way valve. When the first refrigerator evaporator or the second refrigerator evaporator is running, the first end of the four-way valve is connected to the second end of the four-way valve. The third end of the three-way valve is closed with the third end of the four-way valve, and the first end of the three-way valve is connected with the second end of the three-way valve. When the first refrigerator evaporator and the second refrigerator evaporator are closed, the first end of the four-way valve is closed with the second end of the four-way valve, and the second end of the four-way valve is connected with the third end of the four-way valve. The third end of the three-way valve is connected with the third end of the four-way valve.

[0062] Through the above arrangement, when the first refrigerator evaporator or the second refrigerator evaporator is in operation, the coolant in the engine heat exchanger absorbs the heat emitted by the engine when it is working, and after flowing out from the outlet of the engine heat exchanger, it can flow through the first end of the three-way valve, the second end of the three-way valve, the first outer tube and the second outer tube, the first end of the four-way valve and the second end of the four-way valve in sequence, and then flow back into the engine heat exchanger from the inlet of the engine heat exchanger to achieve heat dissipation of the engine and heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube. When the first refrigerator evaporator and the second refrigerator evaporator are closed, the coolant in the engine heat exchanger absorbs the heat emitted by the engine when it is working, and after flowing out from the outlet of the engine heat exchanger, it can flow through the first end of the three-way valve, the third end of the three-way valve, the third end of the four-way valve and the second end of the four-way valve in sequence, and then flow back into the engine heat exchanger from the inlet of the engine heat exchanger to achieve heat dissipation of the engine. In this way, when the refrigerator system is turned off, the coolant can flow directly from the third end of the three-way valve into the third end of the four-way valve, thereby eliminating the heating of the first inner tube and the second inner tube, thus ensuring the normal use of the functional refrigerator system in different working modes.

[0063] In some embodiments, the engine cooling system further includes a third heating element, an outlet of the third heating element is communicated with the first end of the three-way valve, and a fourth end of the four-way valve is communicated with the inlet of the third heating element.

[0064] Through the above arrangement, when the engine is not working and the first refrigerator evaporator or the second refrigerator evaporator is in working state, the first end and the fourth end of the four-way valve can be connected, and the coolant can flow through the third heating element, the three-way valve, the first outer tube, the second outer tube, the four-way valve in sequence, and then flow into the third heating element again. In this way, the third heating element can be started, so that the third heating element heats the internal coolant, and the heated coolant can flow from the first end of the three-way valve to the second end of the three-way valve, and then flow into the first outer tube through the inlet of the first outer tube, so as to flow in the first outer tube and the second outer tube, so as to achieve heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube, thereby avoiding frost formation of water vapor at the first inner tube and water vapor at the second tube, ensuring the safety of the electronic components around the first inner tube and the electronic components around the second inner tube when working, and improving the outlet superheat of the first refrigerator evaporator and the second refrigerator evaporator to avoid compressor liquid hammer.

[0065] In some embodiments, the first refrigerator evaporator and the second refrigerator evaporator are arranged in series.

[0066] Through the above-mentioned arrangement, the refrigerant flowing out from the outlet of the first condenser can flow through the first refrigerator evaporator and the second refrigerator evaporator in sequence, or flow through the second refrigerator evaporator and the first refrigerator evaporator in sequence, thereby absorbing heat in the first refrigerator evaporator and the second refrigerator evaporator to achieve refrigeration of the refrigerator system.

[0067] In a second aspect of the present application, a vehicle is provided, comprising the vehicle thermal management system as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0069] Figure 1 A schematic diagram of the structure of a vehicle thermal management system provided in an embodiment of the present application;

[0070] Figure 2 for Figure 1 The schematic diagram of the refrigerant flow direction of the air conditioner evaporator in the running state;

[0071] Figure 3 for Figure 1Schematic diagram of refrigerant flow when the middle battery heat exchanger is an evaporator;

[0072] Figure 4 for Figure 1 Schematic diagram of refrigerant flow when the battery heat exchanger is a condenser;

[0073] Figure 5 for Figure 1 The middle battery heat exchanger is a condenser, and a schematic diagram of the refrigerant flow when the first condenser is in operation;

[0074] Figure 6 for Figure 1 Schematic diagram of the structure in which the refrigerant can flow in both directions in the battery heat exchanger;

[0075] Figure 7 for Figure 1 Schematic diagram of refrigerant flow direction when the second condenser is in operation;

[0076] Figure 8 for Figure 1 The middle battery heat exchanger is a condenser, and a schematic diagram of the refrigerant flow when the second condenser is in operation;

[0077] Fig. 9 Another structural schematic diagram of a vehicle thermal management system provided in an embodiment of the present application;

[0078] Fig.10 It is a structural schematic diagram of the first outer tube and the second outer tube being connected in parallel to the engine cooling system;

[0079] Fig.11 A schematic diagram of a structure in which a first outer tube and a second outer tube are connected in series to an engine cooling system;

[0080] Fig.12 Another structural schematic diagram of the first outer tube and the second outer tube being connected in series to the engine cooling system;

[0081] Fig.13 A schematic diagram of another structure in which the first outer tube and the second outer tube are connected in series to the engine cooling system;

[0082] Fig.14 for Fig.13 A schematic diagram of the coolant flow direction when the third heating element is working;

[0083] Fig.15 for Fig.13 Schematic diagram of coolant flow when the engine is running.

[0084] Figure numerals: 100, vehicle thermal management system; 1, compressor; 2, first condenser; 3, first expansion valve; 4, first refrigerator evaporator; 5, second refrigerator evaporator; 6, second expansion valve; 7, first heating element; 8, second heating element; 9, first coaxial tube; 101, second coaxial tube; 102, third expansion valve; 103, air conditioning evaporator; 104, first regulating valve; 105, fourth expansion valve; 106, battery heat exchanger; 107, second condenser; 109, engine heat exchanger; 201, four-way valve; A1, first end of four-way valve; A2, second end of four-way valve; A3, third end of four-way valve; A4, fourth end of four-way valve; 202, three-way valve; B1, first end of three-way valve; B2, three-way valve the second end of the three-way valve; B3, the third end of the three-way valve; 203, the third heating element; 204, the first heat exchanger; 205, the fifth switch valve; 206, the sixth switch valve; 207, the seventh switch valve; 208, the eighth switch valve; 209, the fourth check valve; 301, the second regulating valve; 302, the first switch valve; 303, the fifth expansion valve; 304, the second heat exchanger; 305, the first check valve; 306, the second switch valve; 307, the third switch valve; 308, the second check valve; 309, the third check valve; 401, the sixth expansion valve; the switch valve; 402, the ninth switch valve; 403, the fifth check valve; 404, the fourth heat exchanger; 405, the refrigerator system; 406, the tenth switch valve; 407, the eleventh switch valve. DETAILED DESCRIPTION

[0085] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0086] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like indicate directions or positional relationships based on the directions or relative positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition that the relative positional relationship shown in the accompanying drawings is satisfied.

[0087] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0088] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the embodiments of the present invention, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0090] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0091] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0092] With the improvement of people's living standards and the development of the automobile industry, people's demand for car refrigerators is also increasing. In general, a separate refrigerator is usually set up inside the car to provide users with cold or hot drinks. However, if there is only one refrigerator in the car, it may not meet the different needs of different users, which may affect the user experience of the car refrigerator.

[0093] Based on this, the present application provides a vehicle, such as Figure 1 As shown, Figure 1 1 is a schematic diagram of the structure of a vehicle thermal management system 100 , wherein the vehicle includes a thermal management system.

[0094] The vehicle thermal management system 100 is one of the important components of the vehicle, and can perform thermal management on the air conditioning temperature in the cabin, the operating temperature of the battery system, and auxiliary equipment such as the vehicle refrigerator configured in the vehicle, so as to provide a comfortable experience for the driver and passengers. The vehicle refrigerator system 405 is first described below.

[0095] like Figure 1 As shown, the vehicle thermal management system 100 includes a compressor 1 and a first condenser 2 , and an inlet of the first condenser 2 is connected to an outlet of the compressor 1 .

[0096] It can be understood that refrigerant flows in the vehicle thermal management system 100, and the compressor 1 can compress the gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant can be condensed into a high-pressure and medium-temperature liquid refrigerant in the first condenser 2.

[0097] In some embodiments, Figure 1 As shown, the refrigerator system 405 includes a refrigerator flow path, which is connected between the outlet of the first condenser 2 and the inlet of the compressor 1. The refrigerator flow path includes at least a first refrigerator evaporator 4 and a second refrigerator evaporator 5.

[0098] Exemplarily, the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are arranged in series. The refrigerant flowing out of the outlet of the first condenser 2 can flow through the first refrigerator evaporator 4 and the second refrigerator evaporator 5 in sequence, or flow through the second refrigerator evaporator 5 and the first refrigerator evaporator 4 in sequence, so as to absorb heat in the first refrigerator evaporator 4 and the second refrigerator evaporator 5 to achieve refrigeration of the refrigerator system 405.

[0099] Exemplarily, the refrigerator flow path includes a first flow path and a second flow path arranged in parallel. The first flow path includes a first refrigerator evaporator 4, the inlet of the first refrigerator evaporator 4 is connected to the outlet of the first condenser 2, and the outlet of the first refrigerator evaporator 4 is connected to the inlet of the compressor 1. The second flow path includes a second refrigerator evaporator 5, the inlet of the second refrigerator evaporator 5 is connected to the outlet of the first condenser 2, and the outlet of the second refrigerator evaporator 5 is connected to the inlet of the compressor 1.

[0100] In this way, the refrigerant flowing out from the outlet of the first condenser 2 can enter the first refrigerator evaporator 4 and the second refrigerator evaporator 5 respectively, so as to absorb heat in the first refrigerator evaporator 4 and the second refrigerator evaporator 5 to achieve refrigeration of the refrigerator system 405.

[0101] Specifically, Figure 1 , Figure 2 As shown, Figure 2 for Figure 1The vehicle thermal management system 100 further includes a first expansion valve 3 . The inlet of the first expansion valve 3 is connected to the outlet of the first condenser 2 .

[0102] The inlet of the first refrigerator evaporator 4 is communicated with the outlet of the first expansion valve 3 , and the outlet of the first refrigerator evaporator 4 is communicated with the inlet of the compressor 1 .

[0103] For example, the first expansion valve 3 may be an electronic expansion valve or a thermal expansion valve, which may be selected according to the cost control of the vehicle. The expansion valves mentioned below are the same as those mentioned above, and will not be described again.

[0104] Through the above-mentioned arrangement, the high-pressure and medium-temperature liquid refrigerant flowing out from the outlet of the first condenser 2 can first flow through the first expansion valve 3, and after throttling and pressure reduction by the first expansion valve 3, it is converted into a low-temperature and low-pressure liquid refrigerant and enters the first refrigerator evaporator 4, thereby absorbing heat in the first refrigerator evaporator 4 and being converted into a gaseous refrigerant, and the gaseous refrigerant flowing out from the outlet of the first refrigerator evaporator 4 can re-enter the compressor 1 from the inlet of the compressor 1, and then be re-compressed by the compressor 1.

[0105] In this way, the refrigerant can circulate among the compressor 1 , the first condenser 2 and the first refrigerator evaporator 4 , and continuously absorb heat at the first refrigerator evaporator 4 , thereby realizing the refrigeration function of the first refrigerator evaporator 4 .

[0106] In some other embodiments, the first expansion valve 3 may not be provided, and in this case, the outlet of the first outer tube is connected to the inlet of the first refrigerator evaporator 4 .

[0107] like Figure 1 , Figure 2 As shown, the vehicle thermal management system 100 further includes a second expansion valve 6 . An inlet of the second expansion valve 6 is in communication with an outlet of the first condenser 2 .

[0108] The inlet of the second refrigerator evaporator 5 is communicated with the outlet of the second expansion valve 6 , and the outlet of the second refrigerator evaporator 5 is communicated with the inlet of the compressor 1 .

[0109] It can be understood that the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are evaporators in two different vehicle refrigerators.

[0110] Through the above-mentioned arrangement, the high-pressure and medium-temperature liquid refrigerant flowing out from the outlet of the first condenser 2 can first flow through the second expansion valve 6, and after throttling and pressure reduction by the second expansion valve 6, it is converted into a low-temperature and low-pressure liquid refrigerant and enters the second refrigerator evaporator 5, thereby absorbing heat in the second refrigerator evaporator 5 and being converted into a gaseous refrigerant, and the gaseous refrigerant flowing out from the outlet of the second refrigerator evaporator 5 can re-enter the compressor 1 from the inlet of the compressor 1, and then be re-compressed by the compressor 1.

[0111] In this way, the refrigerant can circulate among the compressor 1 , the first condenser 2 and the second refrigerator evaporator 5 , and continuously absorb heat at the second refrigerator evaporator 5 , thereby realizing the refrigeration function of the second refrigerator evaporator 5 .

[0112] In this way, by setting the first refrigerator evaporator 4 and the second refrigerator evaporator 5, the vehicle can be equipped with two vehicle refrigerators at the same time, so as to simultaneously realize the usage requirements of different users for the refrigerator system 405, meet the needs of different users, and improve the user experience of the vehicle.

[0113] At the same time, only one compressor 1 is needed to realize the refrigeration function of the first refrigerator evaporator 4 and the second refrigerator evaporator 5. Compared with the first refrigerator evaporator 4 and the second refrigerator evaporator 5 being connected to one compressor 1 respectively, the structure of the refrigerator system 405 can be simplified, the utilization rate of the space in the vehicle can be improved, and the impact of the noise generated by the compressor 1 when working on the user can be reduced, thereby further improving the user experience of the vehicle.

[0114] In some other embodiments, the second expansion valve 6 may not be provided, and in this case, the outlet of the second outer tube is connected to the inlet of the second refrigerator evaporator 5 .

[0115] It can be understood that the operation and stop of the first refrigerator evaporator 4 can be controlled by controlling the on-off of the first expansion valve 3. The operation and stop of the second refrigerator evaporator 5 can be controlled by controlling the on-off of the second expansion valve 6.

[0116] For example, when only the first refrigerator needs to be started, the first expansion valve 3 can be controlled to be turned on, and the second expansion valve 6 can be controlled to be turned off, so as to realize the independent operation of the evaporator 4 of the first refrigerator.

[0117] It is understandable that the vehicle thermal management system 100 may further include a fourth expansion valve 105 and a third refrigerator evaporator. The inlet of the fourth expansion valve 105 is communicated with the outlet of the first condenser 2 .

[0118] The inlet of the third refrigerator evaporator is communicated with the outlet of the fourth expansion valve 105 , and the outlet of the third refrigerator evaporator is communicated with the inlet of the compressor 1 .

[0119] This can increase the number of vehicle refrigerators that can be installed in the vehicle, so as to further meet the user's demand for the refrigerator system 405.

[0120] In some examples, the vehicle thermal management system 100 includes a third regulating valve, an inlet of the third regulating valve is connected to the outlet of the first refrigerator evaporator 4, and an outlet of the third regulating valve is connected to the compressor 1, and the third regulating valve is used to adjust the flow rate of the refrigerant flowing out of the outlet of the first refrigerator evaporator 4.

[0121] In this way, through the setting of the third regulating valve, the evaporation pressure and evaporation temperature of the first refrigerator evaporator 4 can be changed by changing the flow rate of the refrigerant flowing out of the outlet of the first refrigerator evaporator 4, so as to change the refrigeration effect of the first refrigerator evaporator 4, so that the refrigeration effect of the first refrigerator evaporator 4 meets the needs of users and improves the user experience of the vehicle.

[0122] In some examples, the vehicle thermal management system 100 includes a fourth regulating valve, an inlet of the fourth regulating valve is connected to the outlet of the second refrigerator evaporator 5, and the outlet of the fourth regulating valve is connected to the compressor 1. The fourth regulating valve is used to adjust the flow rate of the refrigerant flowing out of the outlet of the second refrigerator evaporator 5, thereby changing the evaporation pressure and evaporation temperature of the second refrigerator evaporator 5.

[0123] In some cases, users may need to heat the car refrigerator. For example, in winter, users may need to use the refrigerator to heat drinks.

[0124] On this basis, in some embodiments, such as Figure 1 As shown, the vehicle thermal management system 100 further includes a first box body, a first liner and a first heating element 7 .

[0125] The first inner container is arranged in the first box body. The first refrigerator evaporator 4 is arranged in the first box body and is located outside the first inner container.

[0126] The first heating element 7 is disposed in the first box body and outside the first inner container, and is used for heating the first inner container.

[0127] Specifically, the first inner pot is provided with a first accommodating cavity, the first accommodating cavity is used for placing food, and the first heating element 7 is used for heating the food in the first accommodating cavity.

[0128] It can be understood that when the first heating element 7 is in operation, the first expansion valve 3 is turned off, or the compressor 1 is not operating.

[0129] Exemplarily, the first heating element 7 may be a heating tube, a heating plate, or the like.

[0130] Exemplarily, the first heating element 7 is a heating film, and the heating film is attached to the outer wall surface of the first inner pot.

[0131] Through the above settings, when the user needs to heat the food placed in the first inner tank, the first heating element 7 can be started to heat the first inner tank, thereby heating the food inside the first inner tank to meet the user's heating demand for the refrigerator system 405 and improve the user's experience of using the vehicle.

[0132] In some embodiments, Figure 1As shown, the vehicle thermal management system 100 further includes a second box, a second liner and a second heating element 8 .

[0133] The second inner container is arranged in the second box body. The second refrigerator evaporator 5 is arranged in the second box body and is located outside the second accommodating cavity.

[0134] The second heating element 8 is disposed in the second box body and outside the second inner pot, and is used for heating the second inner pot.

[0135] Specifically, the second inner pot is provided with a second accommodating cavity, the second accommodating cavity is used for placing food, and the second heating element 8 is used for heating the food in the second accommodating cavity.

[0136] It can be understood that when the second heating element 8 is in operation, the second expansion valve 6 is turned off, or the compressor 1 is not operating.

[0137] Exemplarily, the second heating element 8 may be a heating tube, a heating plate, or the like.

[0138] Exemplarily, the second heating element 8 is a heating film, and the heating film is attached to the outer wall surface of the second inner pot.

[0139] Through the above settings, when the user needs to heat the food placed in the second inner pot, the second heating element 8 can be started to heat the second inner pot, thereby heating the food inside the second inner pot to meet the user's heating demand for the refrigerator system 405 and improve the user's experience of using the vehicle.

[0140] In some examples, the first heating element 7 and the second heating element 8 both have multiple gears, the multiple gears of the first heating element 7 correspond to various output powers of the first heating element 7 , and the multiple gears of the second heating element 8 correspond to various output powers of the second heating element 8 .

[0141] In this way, the user can adjust the gear position of the first heating element 7 and the gear position of the second heating element 8 so that the first heating element 7 operates at a suitable output power to meet the heating demand of the first inner tank, and the second heating element 8 operates at a suitable output power to meet the heating demand of the second inner tank, which can further improve the user experience of the vehicle.

[0142] On the basis of the above, part of the low-temperature and low-pressure refrigerant flowing into the first refrigerator evaporator 4 from the inlet of the first refrigerator evaporator 4 may flow out directly from the outlet of the first refrigerator evaporator 4. At this time, the pipe connected between the outlet of the first refrigerator evaporator 4 and the inlet of the compressor 1 will contain low-temperature and low-pressure liquid refrigerant. After the water vapor around this part of the pipe exchanges heat with the low-temperature and low-pressure refrigerant in this part of the pipe, the water vapor will frost and adhere to this part of the pipe, which will affect the safety of the electronic components located around this part of the pipe during operation.

[0143] In order to avoid the above problems, in some embodiments, Figure 1 As shown, the refrigerator system 405 further includes a first coaxial tube 9, and the first coaxial tube 9 includes a first outer tube and a first inner tube.

[0144] The inlet of the first outer tube is communicated with the outlet of the first condenser 2 , and the outlet of the first outer tube is communicated with the inlet of the first expansion valve 3 .

[0145] The inlet of the first inner tube is communicated with the outlet of the first refrigerator evaporator 4 , and the outlet of the first inner tube is communicated with the inlet of the compressor 1 .

[0146] It should be noted that the first outer tube is sleeved outside the first inner tube.

[0147] Exemplarily, the shapes of the first outer tube and the first inner tube may be consistent, for example, the shapes of the first outer tube and the first inner tube are both cylindrical.

[0148] Exemplarily, the shapes of the first outer tube and the first inner tube may be different. For example, the shape of the first outer tube is cylindrical, and the shape of the first inner tube is prismatic.

[0149] Through the above-mentioned arrangement, the high-pressure medium-temperature refrigerant flowing out from the outlet of the first condenser 2 will first flow through the first outer tube before flowing into the inlet of the first expansion valve 3, and the gaseous refrigerant flowing out from the outlet of the first refrigerator evaporator 4 will first flow into the first inner tube through the inlet of the first inner tube, and then flow out from the outlet of the first inner tube, and flow into the compressor 1 from the inlet of the compressor 1.

[0150] In this way, the high-temperature and high-pressure refrigerant flowing in the first outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the first inner tube, heating the low-temperature and low-pressure refrigerant in the first inner tube, avoiding the frost of water vapor near the first inner tube at the first inner tube, thereby ensuring the safety of electronic components around the first inner tube when working.

[0151] At the same time, by providing the first coaxial tube 9 , the outlet superheat degree of the first refrigerator evaporator 4 can be increased, and liquid hammer of the compressor 1 can be avoided, thereby protecting the compressor 1 .

[0152] In some embodiments, Figure 1 As shown, the refrigerator system 405 further includes a second coaxial tube 101. The second coaxial tube 101 includes a second outer tube and a second inner tube.

[0153] Illustratively, the second outer tube may be arranged in parallel with the first outer tube.

[0154] Specifically, the inlet of the second outer tube is communicated with the outlet of the first condenser 2 , and the outlet of the second outer tube is communicated with the inlet of the second expansion valve 6 .

[0155] The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator 5 , and the outlet of the second inner tube is communicated with the inlet of the compressor 1 .

[0156] It should be noted that the second outer tube is sleeved outside the second inner tube.

[0157] Exemplarily, the second outer tube and the second inner tube may have the same shape, for example, the second outer tube and the second inner tube may both be cylindrical.

[0158] Exemplarily, the shapes of the second outer tube and the second inner tube may be different, for example, the shape of the second outer tube is cylindrical, and the shape of the second inner tube is prismatic.

[0159] Through the above-mentioned arrangement, the high-pressure medium-temperature refrigerant flowing out of the outlet of the first condenser 2 will first flow through the second outer tube before flowing into the inlet of the second expansion valve 6, and the gaseous refrigerant flowing out of the outlet of the second refrigerator evaporator 5 will first flow into the second inner tube through the inlet of the second inner tube, and then flow out from the outlet of the second inner tube, and flow into the compressor 1 from the inlet of the compressor 1.

[0160] In this way, the high-temperature and high-pressure refrigerant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube, heating the low-temperature and low-pressure refrigerant in the second inner tube, avoiding frost on the water vapor near the second inner tube, thereby ensuring the safety of electronic components around the second inner tube during operation.

[0161] At the same time, by providing the second coaxial tube 101 , the outlet superheat degree of the second refrigerator evaporator 5 can be increased, and liquid hammer of the compressor 1 can be avoided, thereby protecting the compressor 1 .

[0162] Illustratively, the second outer tube may be arranged in series with the first outer tube.

[0163] Specifically, the inlet of the second outer tube is communicated with the outlet of the first outer tube, and the outlet of the second outer tube is communicated with the inlet of the second expansion valve 6 .

[0164] The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator 5 , and the outlet of the second inner tube is communicated with the inlet of the compressor 1 .

[0165] Through the above-mentioned arrangement, part of the high-pressure medium-temperature refrigerant flowing out from the outlet of the first outer tube will enter the first refrigerator evaporator 4 through the inlet of the first refrigerator evaporator 4, and the other part will enter the second outer tube through the inlet of the second outer tube, and flow in from the outlet of the second outer tube, and then enter the second expansion valve 6 through the inlet of the second expansion valve 6.

[0166] The gaseous refrigerant flowing out from the outlet of the second refrigerator evaporator 5 will first flow into the second inner tube through the inlet of the second inner tube, then flow out from the outlet of the second inner tube, and flow into the compressor 1 from the inlet of the compressor 1.

[0167] In this way, the high-temperature and high-pressure refrigerant flowing in the second outer tube can exchange heat with the low-temperature and low-pressure refrigerant flowing in the second inner tube, heating the low-temperature and low-pressure refrigerant in the second inner tube, avoiding frost on the water vapor near the second inner tube, thereby ensuring the safety of electronic components around the second inner tube during operation.

[0168] Furthermore, by disposing the second coaxial tube 101 , the outlet superheat degree of the second refrigerator evaporator 5 can be increased, and liquid hammer of the compressor 1 can be avoided, thereby protecting the compressor 1 .

[0169] At the same time, since the first outer tube and the second outer tube are arranged in series, the high-pressure medium-temperature refrigerant flowing out from the outlet of the first condenser 2 can perform heat exchange with the refrigerant in the first inner tube and the refrigerant in the second inner tube at the first outer tube and the second outer tube in turn. Compared with the first outer tube and the second outer tube being arranged in parallel, the heat in the high-pressure medium-temperature refrigerant flowing out from the outlet of the first condenser 2 can be utilized in a step-by-step manner, thereby improving the energy utilization efficiency in the vehicle thermal management system 100 and improving the energy-saving effect of the vehicle.

[0170] In addition, since the outlet of the first outer tube is connected to the inlet of the first expansion valve 3, and the outlet of the second outer tube is connected to the inlet of the second expansion valve 6, the pressure of the refrigerant is always higher than the low pressure in the vehicle thermal management system 100 during the flow of the refrigerant in the first outer tube and the second outer tube, thereby ensuring the normal flow of the refrigerant in the vehicle thermal management system 100.

[0171] The above is a detailed description of the vehicle refrigerator in the vehicle thermal management system 100 provided in the present application. The following is a description of the air conditioning system in the vehicle thermal management system 100.

[0172] In some embodiments, the vehicle thermal management system 100 further includes an air conditioning system and another compressor, and the air conditioning system is in communication with the other compressor. Specifically, the air conditioning system and the refrigerator system 405 may be in communication with different compressors, respectively.

[0173] In some embodiments, Figure 1 , Figure 2 As shown, the vehicle thermal management system 100 further includes a third expansion valve 102 and an air conditioning evaporator 103 .

[0174] The inlet of the third expansion valve 102 is communicated with the outlet of the first condenser 2 , the inlet of the air-conditioning evaporator 103 is communicated with the outlet of the third expansion valve 102 , and the outlet of the air-conditioning evaporator 103 is communicated with the inlet of the compressor 1 .

[0175] In this way, when the cockpit needs to be cooled, the third expansion valve 102 can be opened so that the refrigerant flowing out of the outlet of the first condenser 2 can flow into the third expansion valve 102 from the inlet of the third expansion valve 102, and then flow out from the outlet of the third expansion valve 102, and flow into the air-conditioning evaporator 103 from the inlet of the air-conditioning evaporator 103, so that the refrigerant absorbs the heat of the cockpit in the air-conditioning evaporator 103, thereby realizing cooling of the cockpit.

[0176] At the same time, only one compressor 1 is needed to realize the refrigeration function of the refrigerator system 405 and the refrigeration of the passenger compartment. Compared with the refrigerator system 405 and the air-conditioning evaporator 103 being connected to one compressor 1 respectively, the structure of the vehicle thermal management system 100 can be simplified, and the utilization rate of the space inside the vehicle can be further improved, thereby further improving the user experience of the vehicle.

[0177] In some embodiments, Figure 1 , Figure 2 As shown, the vehicle thermal management system 100 also includes a first regulating valve 104, the inlet of the first regulating valve 104 is connected to the outlet of the air-conditioning evaporator 103, and the outlet of the first regulating valve 104 is connected to the inlet of the compressor 1. The first regulating valve 104 is used to adjust the flow rate passing through the first regulating valve 104.

[0178] In this way, the flow rate of the refrigerant in the air-conditioning evaporator 103 can be adjusted by the first regulating valve 104, so as to control the evaporation pressure and evaporation temperature of the air-conditioning evaporator 103, thereby achieving different refrigeration temperatures.

[0179] At the same time, when the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, the evaporation pressure and evaporation temperature of the air-conditioning evaporator 103 can be adjusted by adjusting the valve core opening of the first regulating valve 104 to avoid the evaporation pressure and evaporation temperature of the air-conditioning evaporator 103 being affected by the first refrigerator evaporator or the second refrigerator evaporator.

[0180] It should be noted that when only the air-conditioning system is cooling, the valve core of the first regulating valve 104 is fully open. At this time, the evaporation pressure and evaporation temperature of the air-conditioning evaporator 103 can be adjusted by adjusting the valve core opening of the third expansion valve 102, thereby achieving different cooling temperatures.

[0181] When the third expansion valve 102 is a thermal expansion valve, since the thermal expansion valve cannot be completely closed, in some embodiments, the vehicle thermal management system 100 also includes a first switch valve 302, and the inlet of the first switch valve 302 is connected to the outlet of the compressor 1, and the outlet of the first switch valve 302 is connected to the inlet of the first condenser 2. In this way, the on-off state of the pipeline can be controlled by the first switch valve 302 to realize the operation and stop of the air-conditioning system.

[0182] Exemplarily, the first switch valve 302 may be a solenoid valve or a pneumatic valve, etc. The switch valves mentioned below are the same as those mentioned above, and will not be described again.

[0183] The vehicle thermal management system 100 provided in the present application also includes a battery thermal management system. The heating and cooling of the battery in the battery thermal management system will be described below.

[0184] On this basis, in some embodiments, such as Figure 1 , Figure 3 As shown, Figure 3 for Figure 1 Schematic diagram of refrigerant flow when the battery heat exchanger 106 is an evaporator, the vehicle thermal management system 100 may also include a fourth expansion valve 105 and a battery heat exchanger 106. Specifically, the fourth expansion valve 105 is a bidirectional expansion valve. The first end opening of the fourth expansion valve 105 is connected to the outlet of the first condenser 2. The first end opening of the battery heat exchanger 106 is connected to the second end opening of the fourth expansion valve 105, and the second end opening of the battery heat exchanger 106 is connected to the inlet of the compressor 1.

[0185] The vehicle thermal management system 100 may further include a second regulating valve 301 , a first end opening of the second regulating valve 301 is communicated with a second end opening of the first battery heat exchanger 106 , and a second end opening of the second regulating valve 301 is communicated with an inlet of the compressor 1 .

[0186] It is understandable that when the battery generates heat during driving, the battery needs to be cooled in time to maintain the high power output of the battery. Figure 3 As shown, the cooling process of the battery in the present application is as follows: the refrigerant in a high-temperature and high-pressure state flowing out from the outlet of the compressor 1 is converted into a refrigerant in a medium-temperature and high-pressure state through the heat dissipation of the first condenser 2, and then converted into a refrigerant in a low-temperature and low-pressure state through the throttling of the fourth expansion valve 105, and then enters the battery heat exchanger 106. At this time, the battery heat exchanger 106 acts as an evaporator to exchange heat with the battery. After absorbing the heat of the battery, the low-temperature refrigerant enters the first end opening of the second regulating valve 301, and finally flows back to the inlet of the compressor 1 through the second opening of the second regulating valve 301, completing the cooling cycle of the battery.

[0187] It should be noted that, in the cooling cycle of the battery, the second regulating valve 301 can adjust the evaporation pressure and evaporation temperature of the battery heat exchanger 106 by the opening of the valve core, thereby controlling the cooling temperature of the battery.

[0188] Furthermore, when only the battery needs to be cooled, the valve core of the second regulating valve 301 is fully opened. At this time, the evaporation pressure and evaporation temperature of the battery heat exchanger 106 can be adjusted by adjusting the valve core opening of the fourth expansion valve 105, thereby controlling the cooling temperature of the battery.

[0189] When the vehicle is cold started in winter, the battery needs to be heated so that it can start normally. Figure 4 As shown, Figure 4 for Figure 1 Schematic diagram of the refrigerant flow direction when the battery heat exchanger 106 is a condenser. The heating process of the battery in this application is as follows: the refrigerant in a high-temperature and high-pressure state flows out of the outlet of the compressor 1 and enters the battery heat exchanger 106 through the second end opening of the second regulating valve 301. At this time, the battery heat exchanger 106 acts as a condenser to exchange heat with the battery. The high-temperature refrigerant provides heat to the battery through heat conduction, heat convection, and heat radiation. After absorbing the heat of the refrigerant, the battery can heat up and start normally. The refrigerant after the heat exchange is completed flows back to the inlet of the compressor 1 through the second end of the fourth expansion valve 105, completing the heating cycle of the battery.

[0190] In some examples, such as Figure 5 As shown, Figure 5 for Figure 1 The middle battery heat exchanger 106 is a condenser, and a schematic diagram of the refrigerant flow direction when the first condenser 2 is in operation. The vehicle thermal management system 100 also includes a ninth switch valve 402, the inlet of the ninth switch valve 402 is connected to the second end of the fourth expansion valve 105, and the outlet of the ninth switch valve 402 is connected to the outlet of the first condenser 2 and the inlet of the first outer tube.

[0191] In the battery heating cycle, the first switch valve 302 can be closed and the ninth switch valve 402 can be opened, so that the refrigerant flowing out from the second end of the fourth expansion valve 105 enters the first outer tube and then enters the first refrigerator evaporator 4 to achieve refrigeration of the vehicle refrigerator.

[0192] The ninth switch valve 402 can also be closed and the first switch valve 302 can be opened, so that part of the refrigerant flowing out from the outlet of the compressor 1 will flow back to the compressor 1 after heat exchange in the battery heat exchanger 106, and the other part of the refrigerant will flow into the first outer tube after releasing heat in the first condenser 2, and then enter the first refrigerator evaporator 4, so as to realize the refrigeration of the vehicle refrigerator.

[0193] In order to realize the mode switching between the heating mode and the cooling mode of the above-mentioned power battery, a variety of different valves are arranged upstream and downstream of the battery heat exchanger 106. The following first describes the connection relationship between each valve and multiple pipelines in the battery thermal management system, and then describes the mode switching of the power battery in combination with the on-off state of the valve.

[0194] In some embodiments, Figure 6 As shown, Figure 6 for Figure 1The vehicle thermal management system 100 may further include a first one-way valve 305 , the inlet of the first one-way valve 305 is connected to the outlet of the first condenser 2 , and the outlet of the first one-way valve 305 is connected to the first end opening of the fourth expansion valve 105 .

[0195] In some embodiments, Figure 6 As shown, the vehicle thermal management system 100 may further include a second switch valve 306, a third switch valve 307, and a second one-way valve 308, wherein the inlet of the second switch valve 306 is communicated with the outlet of the compressor 1, and the outlet of the second switch valve 306 is communicated with the second end opening of the second regulating valve 301. The inlet of the third switch valve 307 is communicated with the second end opening of the second regulating valve 301, and the outlet of the third switch valve 307 is communicated with the inlet of the compressor 1. The inlet of the second one-way valve 308 is communicated with the first end opening of the fourth expansion valve 105, and the outlet of the second one-way valve 308 is communicated with the inlet of the compressor 1.

[0196] In some embodiments, Figure 6 As shown, the vehicle thermal management system 100 may further include a sixth expansion valve 401 , the inlet of the sixth expansion valve 401 being connected to the outlet of the fifth expansion valve 303 and the outlet of the second check valve 308 , and the outlet of the sixth expansion valve 401 being connected to the inlet of the compressor 1 .

[0197] In some embodiments, Figure 6 As shown, the vehicle thermal management system 100 may further include a third one-way valve 309 , the inlet of the third one-way valve 309 is connected to the outlet of the first condenser 2 , and the outlet of the third one-way valve 309 is connected to the first end opening of the fourth expansion valve 105 .

[0198] Based on the above settings, Figure 6 As shown, in the cooling cycle of the battery, the first switch valve 302, the third one-way valve 309, the first one-way valve 305, the second regulating valve 301 and the third switch valve 307 are opened, and the second switch valve 306 and the sixth expansion valve 401 are closed.

[0199] In this way, the high-temperature and high-pressure refrigerant flowing out of the outlet of the compressor 1 can be converted into a medium-temperature and high-pressure refrigerant through the heat dissipation of the first condenser 2, and then flow through the first one-way valve 305 and the third one-way valve 309 in sequence, and then flow into the first end opening of the fourth expansion valve 105 respectively, and after throttling, it is converted into a low-temperature and low-pressure refrigerant, and then flows into the battery heat exchanger 106 to cool the battery. The cooled refrigerant flows through the second regulating valve 301 and then flows back to the inlet of the compressor 1 through the third switch valve 307.

[0200] In the heating cycle of the battery, the second switch valve 306 , the second regulating valve 301 , the second non-return valve 308 and the sixth expansion valve 401 are opened, and the first switch valve 302 and the third switch valve 307 are closed.

[0201] In this way, the high-temperature and high-pressure refrigerant flowing out from the outlet of the compressor 1 flows into the second regulating valve 301 via the second switch valve 306, flows into the battery heat exchanger 106 through the second regulating valve 301 to heat the battery, and then enters the second one-way valve 308 after throttling and cooling by the fourth expansion valve 105, flows into the inlet of the sixth expansion valve 401 through the outlet of the second one-way valve 308, and then flows into the inlet of the compressor 1 through the outlet of the sixth expansion valve 401.

[0202] It should be noted that if Figure 6 As shown, the vehicle thermal management system 100 further includes a fourth heat exchanger 404, which is used to perform heat exchange with the coolant in the vehicle motor cooling system. The inlet of the fourth heat exchanger 404 is connected to the outlet of the second one-way valve 308 and the outlet of the fifth expansion valve 303, and the outlet of the fourth heat exchanger 404 is connected to the inlet of the sixth expansion valve 401 and the outlet of the first one-way valve 305.

[0203] In this way, in the heating cycle of the battery, the refrigerant enters the second one-way valve 308 after being throttled and cooled by the fourth expansion valve 105, flows into the fourth heat exchanger through the outlet of the second one-way valve 308, absorbs the heat in the coolant in the vehicle motor cooling system and is converted into a gaseous refrigerant, then flows through the sixth expansion valve 401 and flows back to the compressor, thereby realizing the heating cycle of the battery.

[0204] On this basis, in some embodiments, such as Figure 6 As shown, the vehicle thermal management system 100 also includes a fifth one-way valve 403, the inlet of the fifth one-way valve 403 is connected to the outlet of the fifth expansion valve 303 and the outlet of the second one-way valve 308, and the outlet of the fifth one-way valve 403 is connected to the outlet of the first condenser 2, the inlet of the first refrigerator evaporator 4 and the inlet of the second refrigerator evaporator 5.

[0205] In this way, when the battery is heated and the refrigerator system 405 needs to be cooled, the fifth one-way valve 403 can be opened, so that the throttled refrigerant flowing out from the outlet of the second one-way valve 308 flows into the fifth one-way valve 403, and then flows into the first refrigerator evaporator 4 and the second refrigerator evaporator 5. After absorbing heat in the first refrigerator evaporator 4 and the second refrigerator evaporator 5, it flows back to the compressor 1, thereby achieving heating of the battery and cooling of the refrigerator system 405.

[0206] It should be noted that when the battery is heated and the refrigerator system 405 is required to be cooled, the amount of refrigerant flowing out of the five-way valve 403 may be greater than the amount of refrigerant required for cooling the refrigerator system 405. At this time, the valve core opening of the sixth expansion valve 401 can be adjusted so that part of the refrigerant flows back to the compressor 1 through the sixth expansion valve 401, and part of the refrigerant flows into the first refrigerator evaporator 4 or the second refrigerator evaporator 5. In this way, the flow rate and pressure of the refrigerant flowing into the first refrigerator evaporator 4 or the second refrigerator evaporator 5 can be adjusted to meet the refrigeration requirements of the refrigerator system 405.

[0207] On this basis, in some examples, such as Figure 6 As shown, the vehicle thermal management system 100 also includes a tenth switch valve 406, a first end opening of the tenth switch valve 406 is connected to the outlet of the fourth heat exchanger 404, the inlet of the third one-way valve 309, and the inlet of the sixth expansion valve 401, and a second end opening of the tenth switch valve 406 is connected to the outlet of the first one-way valve 305, the outlet of the fifth one-way valve 403, the inlet of the first refrigerator evaporator 4, and the inlet of the second refrigerator evaporator 5.

[0208] In this way, when the battery is heated and the refrigerator system 405 needs to be cooled, the tenth switch valve 406 can be closed to prevent the refrigerant flowing into the sixth expansion valve 401 from mixing with the refrigerant flowing into the first refrigerator evaporator 4 or the second refrigerator evaporator 5, so as to ensure normal cooling of the refrigerator system 405.

[0209] In some embodiments, Figure 6 , Figure 7 As shown, Figure 7 for Figure 1 Schematic diagram of refrigerant flow when the second condenser 107 is in operation, the vehicle thermal management system 100 may also include a second condenser 107 and a fifth expansion valve 303, the inlet of the second condenser 107 is connected to the outlet of the compressor 1, the inlet of the fifth expansion valve 303 is connected to the outlet of the second condenser 107, and the outlet of the fifth expansion valve 303 is connected to the inlet of the sixth expansion valve 401.

[0210] In this way, when the cabin needs to be heated in winter, the sixth expansion valve 401 can be opened, and the first switch valve 302 and the second switch valve 306 can be closed, so that the high-temperature refrigerant of the compressor 1 can directly enter the second condenser 107 for heat dissipation, heat the low-temperature air in the cabin, thereby raising the temperature of the cabin and providing a comfortable environment for the user. The refrigerant after heat exchange enters the fifth expansion valve 303 for throttling and conversion into medium-temperature and high-pressure refrigerant, and then flows back to the compressor 1 through the sixth expansion valve 401 to complete the heating cycle of the cabin.

[0211] In some embodiments, Figure 6As shown, the vehicle thermal management system 100 also includes an eleventh switch valve 407 , the inlet of the eleventh switch valve 407 is connected to the outlet of the second condenser 107 , and the outlet of the eleventh switch valve 407 is connected to the inlet of the fifth one-way valve 403 and the outlet of the second one-way valve 308 .

[0212] Through the above arrangement, when only the air conditioning system is heating, the eleventh switch valve 407 can be closed and the fifth expansion valve 303 can be opened, so that all the refrigerant flowing out of the outlet of the second condenser 107 passes through the fifth expansion valve 303, so that the refrigerant is throttled and converted into a medium-temperature and high-pressure refrigerant, and then absorbs heat in the fourth heat exchanger 404, completing the heating cycle of the air conditioning system. When the air conditioning system is heating and the refrigerator system 405 is cooling, the eleventh switch valve 407 can be opened and the fifth expansion valve 303 can be closed, so that the refrigerant flowing out of the outlet of the second condenser 107 flows through the eleventh switch valve 407 and the fifth check valve 403 in sequence, and then flows into the first expansion valve 3 and the second expansion valve 6, and after being throttled by the first expansion valve 3 and the second expansion valve 6 and converted into a medium-temperature and high-pressure refrigerant, it flows into the first refrigerator evaporator 4 and the second refrigerator evaporator 5 respectively to absorb heat, thereby realizing the heating function of the air conditioning system and the cooling function of the refrigerator system 405.

[0213] It is understandable that if Figure 8 As shown, Figure 8 for Figure 1 The middle battery heat exchanger 106 is a condenser, and the refrigerant flow diagram when the second condenser 107 is in operation. When the cabin needs to be heated in winter, the battery heat exchanger 106 can be a condenser to cool the battery. The battery heat exchanger 106 can also be an evaporator to heat the battery.

[0214] Similarly, when cooling the cabin, the battery heat exchanger 106 can be a condenser to cool the battery, or an evaporator to heat the battery.

[0215] It can be understood that the vehicle thermal management system 100 in the above embodiment can be used in electric vehicles as well as hybrid vehicles.

[0216] A hybrid vehicle includes a battery system and an engine system. The vehicle thermal management system 100 in a hybrid vehicle having an engine system will be described below.

[0217] In some embodiments, Fig. 9 As shown, Fig. 9 FIG. 1 is another structural diagram of a vehicle thermal management system 100 . The vehicle thermal management system 100 also includes an engine cooling system.

[0218] Specifically, a coolant flows in the engine cooling system, and the coolant is used to absorb the heat emitted by the vehicle engine when it is working, so as to dissipate heat from the engine. The coolant can circulate in the engine cooling system.

[0219] It should be noted that the engine cooling system includes an external radiator not shown in the figure, into which the coolant can flow, and the external radiator can dissipate the heat in the coolant to the outside of the vehicle to cool the engine of the vehicle.

[0220] In some embodiments, a portion of the first flow path between the outlet of the first refrigerator evaporator 4 and the inlet of the compressor 1 is a first flow section.

[0221] The portion of the second flow path between the outlet of the second refrigerator evaporator 5 and the inlet of the compressor 1 is the second flow section.

[0222] The vehicle thermal management system 100 further includes an engine cooling system, which is thermally connected to the first flow segment and / or the second flow segment.

[0223] Through the above-mentioned arrangement, the heat emitted by the vehicle engine when working and absorbed by the coolant in the engine cooling system can be used to heat the first flow section, thereby avoiding frost at the outlet of the first refrigerator evaporator 4, and increasing the outlet superheat of the first refrigerator evaporator 4, avoiding liquid hammer of the compressor 1, thereby protecting the compressor 1.

[0224] At the same time, the heat emitted by the vehicle engine when working and absorbed by the coolant in the engine cooling system can be used to heat the first flow section, so as to avoid frost at the outlet of the second refrigerator evaporator 5, and increase the outlet superheat of the second refrigerator evaporator 5, avoid liquid hammer of the compressor 1, and thus protect the compressor 1.

[0225] Specifically, Fig. 9 As shown, the refrigerator system 405 further includes a first coaxial tube 9, and the first coaxial tube 9 includes a first outer tube and a first inner tube.

[0226] The first outer tube is connected to the engine cooling system. The inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator 4, and the outlet of the first inner tube is connected to the inlet of the compressor 1.

[0227] Through the above-mentioned arrangement, since the first outer tube is connected to the engine cooling system, the coolant in the engine cooling system can flow through the first outer tube, and since the inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator 4, and the outlet of the first inner tube is connected to the inlet of the compressor 1, the coolant flowing in the first outer tube can perform heat exchange with the low-temperature and low-pressure refrigerant flowing in the first inner tube.

[0228] In this way, the coolant in the first outer tube can heat the low-temperature and low-pressure refrigerant in the first inner tube, preventing the water vapor near the first inner tube from frosting on the first inner tube, thereby ensuring the safety of the electronic components around the first inner tube when working.

[0229] At the same time, by providing the first coaxial tube 9 , the outlet superheat degree of the first refrigerator evaporator 4 can be increased, and liquid hammer of the compressor 1 can be avoided, thereby protecting the compressor 1 .

[0230] In some embodiments, Fig. 9 As shown, the refrigerator system 405 further includes a second coaxial tube 101, and the second coaxial tube 101 includes a second outer tube and a second inner tube.

[0231] The second outer tube is connected to the engine cooling system. The inlet of the second inner tube is communicated with the outlet of the second refrigerator evaporator 5 , and the outlet of the second inner tube is communicated with the inlet of the compressor 1 .

[0232] Through the above-mentioned arrangement, since the second outer tube is connected to the engine cooling system, the coolant in the engine cooling system can flow through the second outer tube, and since the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator 5, and the outlet of the second inner tube is connected to the inlet of the compressor 1, the coolant flowing in the second outer tube can perform heat exchange with the low-temperature and low-pressure refrigerant flowing in the second inner tube.

[0233] In this way, the coolant in the second outer tube can heat the low-temperature and low-pressure refrigerant in the second inner tube, preventing the water vapor near the second inner tube from frosting at the second inner tube, thereby ensuring the safety of the electronic components around the second inner tube during operation.

[0234] Furthermore, by disposing the second coaxial tube 101 , the outlet superheat degree of the second refrigerator evaporator 5 can be increased, and liquid hammer of the compressor 1 can be avoided, thereby protecting the compressor 1 .

[0235] Exemplarily, the second outer tube and the first outer tube may be arranged in parallel.

[0236] Specifically, Fig.10 As shown, Fig.10 This is a structural schematic diagram of a first outer tube and a second outer tube connected in parallel to an engine cooling system. The inlet and outlet of the first outer tube are connected to the engine cooling system, and the inlet and outlet of the second outer tube are connected to the engine cooling system.

[0237] In this way, the coolant in the engine cooling system can flow into the first outer tube and the second outer tube respectively, so as to heat the first inner tube and the second inner tube.

[0238] Illustratively, the second outer tube and the first outer tube may be arranged in series.

[0239] In some examples, such as Fig. 9 As shown, the inlet of the first outer tube and the outlet of the second outer tube are connected to the engine cooling system, and the inlet of the second outer tube is connected to the outlet of the first outer tube.

[0240] In this way, the coolant in the engine cooling system will first enter the first outer tube through the inlet of the first outer tube, then enter the second outer tube through the outlet of the first outer tube and the inlet of the second outer tube, and flow into the engine cooling system from the outlet of the second outer tube, thereby heating the first inner tube and the second inner tube.

[0241] In some examples, such as Fig.11 As shown, Fig.11 The present invention is a structural schematic diagram of a first outer tube and a second outer tube connected in series to an engine cooling system. The outlet of the first outer tube and the inlet of the second outer tube are connected to the engine cooling system, and the inlet of the first outer tube is connected to the outlet of the second outer tube.

[0242] In this way, the coolant in the engine cooling system will first enter the second outer tube through the inlet of the second outer tube, then enter the first outer tube through the outlet of the second outer tube and the inlet of the first outer tube, and flow into the engine cooling system from the outlet of the first outer tube, thereby heating the first inner tube and the second inner tube.

[0243] In some examples, such as Fig.12 As shown, Fig.12 This is another structural schematic diagram of a first outer tube and a second outer tube connected in series to an engine cooling system, wherein a first inlet and a first outlet of the first outer tube are connected to the engine cooling system, an inlet of the second outer tube is connected to the second outlet of the first outer tube, and an outlet of the second outer tube is connected to the second inlet of the first outer tube.

[0244] In this way, after the coolant in the engine cooling system enters the first outer tube from the first inlet of the first outer tube, part of it will flow back to the engine cooling system from the first outlet of the first outer tube, and part of it will enter the second outer tube through the second outlet of the first outer tube and the inlet of the second outer tube, and then flow back to the first outer tube from the outlet of the second outer tube and the second inlet of the first outer tube, and then flow back to the engine cooling system from the first outlet of the first outer tube, thereby achieving heating of the first inner tube and the second inner tube.

[0245] On this basis, in some embodiments, such as Fig. 9 , Fig.13 As shown, Fig.13 This is another structural schematic diagram of a first outer tube and a second outer tube connected in series to an engine cooling system, where the engine cooling system includes an engine heat exchanger 109 and a four-way valve 201. The inlet of the first outer tube is connected to the outlet of the engine heat exchanger 109.

[0246] The outlet of the first outer pipe is communicated with the first end A1 of the four-way valve, and the second end A2 of the four-way valve is communicated with the inlet of the engine heat exchanger 109 .

[0247] When the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, the first end A1 of the four-way valve is communicated with the second end A2 of the four-way valve.

[0248] Through the above arrangement, when the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, the coolant in the engine heat exchanger 109 can flow out from the outlet of the engine heat exchanger 109 after absorbing the heat dissipated when the engine is working, and then flow into the first outer tube from the inlet of the first outer tube to heat the refrigerant in the first inner tube to avoid frosting of water vapor around the first inner tube.

[0249] The coolant in the first outer tube can enter the second outer tube through the inlet of the second outer tube to heat the refrigerant in the second inner tube to avoid frost on the water vapor around the second inner tube.

[0250] The coolant in the second outer tube will flow out from the outlet of the second outer tube and re-enter the first outer tube, and flow out from the outlet of the first outer tube together with the coolant in the first outer tube, and then enter the engine heat exchanger 109 from the inlet of the engine heat exchanger 109, and reabsorb the heat dissipated when the engine is working, thereby realizing the heat dissipation of the engine and the heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube.

[0251] On this basis, in some embodiments, such as Fig. 9 , Fig.13 As shown, the engine cooling system also includes a three-way valve 202, a first end B1 of the three-way valve is connected to the outlet of the engine heat exchanger 109, a second end B2 of the three-way valve is connected to the inlet of the first outer pipe, and a third end B3 of the three-way valve can be connected to the third end A3 of the four-way valve.

[0252] When the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, the first end A1 of the four-way valve is connected to the second end A2 of the four-way valve. The third end B3 of the three-way valve is disconnected from the third end A3 of the four-way valve, and the first end B1 of the three-way valve is connected to the second end B2 of the three-way valve.

[0253] When the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are closed, the first end A1 of the four-way valve is disconnected from the second end A2 of the four-way valve, and the second end A2 of the four-way valve is connected to the third end A3 of the four-way valve. The third end B3 of the three-way valve is connected to the third end A3 of the four-way valve.

[0254] Through the above arrangement, when the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, the coolant in the engine heat exchanger 109 absorbs the heat dissipated when the engine is working, and after flowing out from the outlet of the engine heat exchanger 109, it can flow through the first end B1 of the three-way valve, the second end B2 of the three-way valve, the first outer tube, the second outer tube, the first end A1 of the four-way valve and the second end A2 of the four-way valve in sequence, and then flow back into the engine heat exchanger 109 from the inlet of the engine heat exchanger 109, thereby realizing the heat dissipation of the engine and the heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube.

[0255] It should be noted that when the coolant in the engine heat exchanger 109 absorbs too much heat dissipated by the engine during operation, after the coolant flows out from the outlet of the engine heat exchanger 109, it will first pass through the external radiator to dissipate heat, and then enter the three-way valve 202 from the first end B1 of the three-way valve.

[0256] When the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are closed, the coolant in the engine heat exchanger 109 absorbs the heat dissipated when the engine is working, and after flowing out from the outlet of the engine heat exchanger 109, it can flow through the first end B1 of the three-way valve, the third end B3 of the three-way valve, the third end A3 of the four-way valve and the second end A2 of the four-way valve in sequence, and then flow back into the engine heat exchanger 109 from the inlet of the engine heat exchanger 109 to achieve heat dissipation of the engine.

[0257] In this way, when the refrigerator system 405 is turned off, the coolant can flow directly from the third end B3 of the three-way valve into the third end A3 of the four-way valve, thereby eliminating the heating of the first inner tube and the second inner tube, thereby ensuring the normal use of the functional refrigerator system 405 in different working modes.

[0258] In some cases, when the engine is not working, the coolant in the engine cooling system cannot absorb the heat generated when the engine is working. If the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state at this time, the coolant in the first outer tube cannot heat the refrigerant in the first inner tube, and the coolant in the second outer tube cannot heat the refrigerant in the second inner tube.

[0259] In order to avoid the above problems, in some embodiments, Fig. 9 , Fig.14 As shown, Fig.14 for Fig.13 The engine cooling system further includes a third heating element 203 , the outlet of the third heating element 203 is connected to the first end B1 of the three-way valve, and the fourth end A4 of the four-way valve is connected to the inlet of the third heating element 203 .

[0260] Exemplarily, the third heating element 203 may be a heating plate, a heating film, or the like.

[0261] Exemplarily, the third heating element 203 is a PTC water heater.

[0262] Through the above arrangement, when the engine is not working and the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state, the first end A1 of the four-way valve and the fourth end A4 of the four-way valve can be connected. At this time, the coolant can flow through the third heating element 203, the three-way valve 202, the first outer tube, the second outer tube, the four-way valve 201 in sequence and then flow back into the third heating element 203.

[0263] In this way, the third heating element 203 can be started, so that the third heating element 203 heats the internal coolant. The heated coolant can flow from the first end B1 of the three-way valve to the second end B2 of the three-way valve, and then flow into the first outer tube through the inlet of the first outer tube, so as to flow in the first outer tube and the second outer tube, so as to achieve heating of the refrigerant in the first inner tube and the refrigerant in the second inner tube, thereby avoiding frosting of water vapor at the first inner tube and water vapor at the second tube, ensuring the safety of electronic components around the first inner tube and the electronic components around the second inner tube during operation, and increasing the outlet superheat of the first refrigerator evaporator 4 and the second refrigerator evaporator 5 to avoid liquid hammer of the compressor 1.

[0264] In some embodiments, Fig. 9 As shown, the engine cooling system also includes a first heat exchanger 204 and a first fan. The inlet of the first heat exchanger 204 is connected to the outlet of the engine heat exchanger 109, and the outlet of the first heat exchanger 204 is connected to the first end B1 of the three-way valve. The first fan is arranged at the first heat exchanger 204 to blow the air at the first heat exchanger 204 to the cockpit.

[0265] In this way, during the operation of the engine, the coolant in the engine heat exchanger 109 absorbs the heat dissipated when the engine is working, and after flowing out from the outlet of the engine heat exchanger 109, it can flow into the first heat exchanger 204 from the inlet of the first heat exchanger 204, and then exchange heat with the air at the first heat exchanger 204 to heat the air at the first heat exchanger 204. Through the setting of the first fan, the first fan can pass the heated air into the cockpit to heat the cockpit and provide heating for the user.

[0266] It can be understood that, when the engine is operating, turning off the first fan can stop the supply of heated air to the cabin, i.e., stop providing heating for the user.

[0267] It can be understood that, during the operation of the engine, when the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state, or when both the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are in closed state, the coolant can flow through the first heat exchanger 204 to provide heating for the user.

[0268] In some examples, such as Fig. 9 As shown, the inlet of the first heat exchanger 204 is connected to the outlet of the third heating element 203 .

[0269] In this way, when the engine is not working and the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state, when the third heating element 203 is started, the heat in the coolant heated by the third heating element 203 can be used to heat the air at the first heat exchanger 204, and the first fan can be used to provide heating for the user.

[0270] In some examples, such as Fig. 9 As shown, the engine cooling system further includes a second heat exchanger 304, an inlet of the second heat exchanger 304 is communicated with an outlet of the first outer pipe, and an outlet of the second heat exchanger 304 is communicated with a first end A1 of the four-way valve.

[0271] The engine cooling system further includes a third heat exchanger, which is disposed at the vehicle battery and is used for exchanging heat with the second heat exchanger 304 .

[0272] Exemplarily, the second heat exchanger 304 and the third heat exchanger are refrigerant-water heat exchangers.

[0273] In this way, when the engine is running and the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state, when the battery needs to be heated, the first end B1 and the second end of the three-way valve can be connected, and the first end A1 and the second end of the four-way valve can be connected. At this time, the coolant can flow through the engine heat exchanger 109, the third heating element 203, the first heat exchanger 204, the three-way valve 202, the first outer tube, the second outer tube, the second heat exchanger 304, the four-way valve 201 in sequence, and then flow back into the engine heat exchanger 109, and use the heat dissipated by the engine when it is running absorbed by the coolant to heat the battery.

[0274] When the engine is not working and the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in working state, when the battery needs to be heated, the first end B1 and the second end of the three-way valve can be connected, and the first end A1 and the fourth end of the four-way valve can be connected. At this time, the coolant can flow through the third heating element 203, the three-way valve 202, the first outer tube, the second outer tube, the second heat exchanger 304, the four-way valve 201 in sequence and then flow back into the third heating element 203. In this way, the third heating element 203 can be started and the heat generated by the third heating element 203 can be used to heat the battery.

[0275] In some examples, such as Fig. 9 As shown, the engine cooling system further includes a fifth switch valve 205, an inlet of the fifth switch valve 205 is communicated with the second end B2 of the three-way valve, and an outlet of the fifth switch valve 205 is communicated with the inlet of the first outer pipe.

[0276] In this way, when the first refrigerator evaporator 4 and the second refrigerator evaporator 5 are in the closed state and the battery needs to be heated, the fifth switch valve 205 can be closed, so that the coolant flows out from the second end B2 of the three-way valve and directly flows into the second heat exchanger 304 from the inlet of the second heat exchanger 304, thereby stopping the heating of the first inner tube and the second inner tube.

[0277] In some examples, such as Fig. 9 , Fig.15 As shown, Fig.15 for Fig.13 Schematic diagram of coolant flow when the engine is working. When the first refrigerator evaporator 4 or the second refrigerator evaporator 5 is in operation, and the first heat exchanger 204 and the third heating element 203 are not working, the second end B2 of the three-way valve can be connected to the third end B3 of the three-way valve, and the first end A1 of the four-way valve can be connected to the second end A2 of the four-way valve, and the third end A3 of the four-way valve can be connected to the fourth end A4 of the four-way valve.

[0278] In the above case, after the coolant flows out from the outlet of the engine heat exchanger 109, it will flow through the fourth end A4 of the four-way valve, the third end A3 of the four-way valve, the third end B3 of the three-way valve, the second end B2 of the three-way valve, the first outer tube, the second outer tube, the second heat exchanger 304, the first end A1 of the four-way valve, the second end A2 of the four-way valve, and then flow back to the engine heat exchanger 109 to heat the first inner tube and the second inner tube.

[0279] It is understood that in the above process, the second heat exchanger 304 and the third heat exchanger can be used to heat the battery. The second heat exchanger 304 and the third heat exchanger can also be stopped to heat the battery. Fig. 9 As shown, the vehicle thermal management system 100 further includes a second condenser 107, an air conditioning evaporator 103, a sixth switch valve 206, a seventh switch valve 207, an eighth switch valve 208, a fourth check valve 209, a third expansion valve 102, and a fifth expansion valve 303. The inlet of the second condenser 107 is communicated with the outlet of the compressor 1, and the outlet of the second condenser 107 is communicated with the inlet of the sixth switch valve 206, and is communicated with the inlet of the seventh switch valve 207.

[0280] The outlet of the sixth switch valve 206 is connected to the inlet of the third expansion valve 102, the outlet of the seventh switch valve 207 is connected to the inlet of the first condenser 2 and to the inlet of the eighth switch valve 208, and the outlet of the eighth switch valve 208 is connected to the inlet of the compressor 1.

[0281] The outlet of the first condenser 2 is communicated with the inlet of the fourth check valve 209, and is communicated with the first end opening of the fifth expansion valve 303. The outlet of the fourth check valve 209 is communicated with the inlet of the third expansion valve 102, and is communicated with the outlet of the sixth switch valve 206. The second end opening of the fifth expansion valve 303 is communicated with the outlet of the sixth switch valve 206.

[0282] The outlet of the third expansion valve 102 is communicated with the inlet of the air-conditioning evaporator 103 , and the outlet of the air-conditioning evaporator 103 is communicated with the inlet of the compressor 1 .

[0283] It should be noted that the second condenser 107 is disposed in the driver's cabin, and the first condenser 2 is disposed outside the vehicle.

[0284] Through the above arrangement, when the cockpit needs to be heated, for example, when the engine is not working and cannot provide heating for the user through the first heat exchanger 204, or when the heat in the engine cooling system is insufficient to meet the user's heating demand for the vehicle, the sixth switch valve 206, the eighth switch valve 208 and the fifth expansion valve 303 can be opened, and the seventh switch valve 207 and the third expansion valve 102 can be closed. At this time, the refrigerant can flow through the compressor 1, the second condenser 107, the sixth switch valve 206, the fifth expansion valve 303, the first condenser 2, the eighth switch valve 208, the compressor 1 in sequence, and then flow back into the second condenser 107. At this time, the refrigerant flows in the first condenser 2, and the first condenser 2 is equivalent to an evaporator. The refrigerant absorbs heat in the first condenser 2 and emits heat in the second condenser 107, thereby heating the air at the second condenser 107 to achieve heating of the cockpit and provide heating for the user.

[0285] In this case, the third heating element 203 can be turned on to heat the coolant, and the first heat exchanger 204 and the second condenser 107 can emit heat to provide heating for the user. The third heating element 203 can also be turned off, and only the second condenser 107 can emit heat to provide heating for the user, so as to reduce the energy consumption of the vehicle.

[0286] When the cabin needs to be cooled, the sixth switch valve 206, the eighth switch valve 208 and the fifth expansion valve 303 can be closed, and the third expansion valve 102 and the seventh switch valve 207 can be opened. At this time, the refrigerant flows through the second condenser 107, the seventh switch valve 207, the first condenser 2, the fourth one-way valve 209, the third expansion valve 102, the air-conditioning evaporator 103, the compressor 1, and then flows back into the second condenser 107. The refrigerant can release heat in the first condenser 2 and absorb heat in the air-conditioning evaporator 103 to absorb the heat of the cabin, thereby cooling the cabin and providing cooling for the user.

[0287] It should be noted that a second fan is provided at the second condenser 107. When the cabin is heated, the second fan is started to pass the air heated at the second condenser 107 into the cabin. When the cabin is cooled, the second fan is turned off to reduce the heat dissipated by the refrigerant at the second condenser 107, so that most of the refrigerant releases heat at the first condenser 2, avoiding heat dissipation into the vehicle and affecting the cooling effect of the cabin.

[0288] In some examples, such as Fig. 9 As shown, the inlet of the first expansion valve 3 is connected to the outlet of the sixth switch valve 206 and to the outlet of the fourth check valve 209 , and the inlet of the second expansion valve 6 is connected to the outlet of the sixth switch valve 206 and to the outlet of the fourth check valve 209 .

[0289] In this way, when the cockpit is heated, the refrigerant flowing out of the outlet of the sixth switch valve 206 can partially flow into the inlet of the first expansion valve 3 or the inlet of the second expansion valve 6 to realize the refrigeration function of the first refrigerator evaporator 4 or the second refrigerator evaporator 5.

[0290] When the cabin is cooled, the refrigerant flowing out of the outlet of the fourth one-way valve 209 can partially flow into the inlet of the first expansion valve 3 or the inlet of the second expansion valve 6 to realize the cooling function of the first refrigerator evaporator 4 or the second refrigerator evaporator 5.

[0291] It should be noted that when the cockpit does not need to be heated or cooled, the second fan, the sixth switch valve 206, the third expansion valve 102 and the fifth expansion valve 303 can be closed. At this time, after the refrigerant is compressed in the compressor 1, it will release heat in the first condenser 2 and then flow into the fourth one-way valve 209 from the inlet of the fourth one-way valve 209, and flow out from the outlet of the fourth one-way valve 209, and then flow into the inlet of the first expansion valve 3 or the inlet of the second expansion valve 6, so as to realize the refrigeration function of the first refrigerator evaporator 4 or the second refrigerator evaporator 5.

[0292] In some examples, such as Fig. 9As shown, the vehicle thermal management system 100 also includes a battery heat exchanger 106 and a fourth expansion valve 105, the first end opening of the fourth expansion valve 105 is connected to the outlet of the sixth switch valve 206, and is connected to the outlet of the fourth one-way valve 209, the second end opening of the fourth expansion valve 105 is connected to the first end opening of the battery heat exchanger 106, and the second end opening of the battery heat exchanger 106 is connected to the inlet of the compressor 1.

[0293] In this way, when the cockpit is heated, the refrigerant can flow from the outlet of the sixth switch valve 206 into the first end opening of the fourth expansion valve 105; when the cockpit is cooled, or when the vehicle is neither cooled nor heated, the refrigerant can flow from the outlet of the fourth check valve 209 into the first end opening of the fourth expansion valve 105, and then flow into the first end opening of the battery heat exchanger 106 through the second end opening of the fourth expansion valve 105, and then absorb heat in the battery heat exchanger 106 to achieve cooling of the battery.

[0294] It can be understood that, for hybrid vehicles, the first outer tube and the second outer tube can be connected to the engine cooling system through the above embodiment, and the heat emitted by the engine when working can be used to heat the refrigerant in the first inner tube and the second inner tube to avoid frost at the outlet of the first refrigerator evaporator 4 or the second refrigerator evaporator 5. The inlet of the first outer tube and the inlet of the second outer tube can also be connected to the outlet of the compressor 1 in the vehicle thermal management system 100, and the heat in the refrigerant after compression by the compressor 1 can be used to heat the refrigerant in the first inner tube and the second inner tube to avoid frost at the outlet of the first refrigerator evaporator 4 or the second refrigerator evaporator 5.

[0295] In some examples, for electric vehicles and hybrid vehicles, the first coaxial tube 9 or the second coaxial tube 101 can be eliminated, and a heating device such as an electric heating wire can be set at the outlet of the first refrigerator evaporator 4 or the outlet of the second refrigerator evaporator 5 to directly heat the outlet of the first refrigerator evaporator 4 or the outlet of the second refrigerator evaporator 5, which can also avoid frost at the outlet of the first refrigerator evaporator 4 or the outlet of the second refrigerator evaporator 5.

[0296] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vehicle thermal management system (100), characterized in that: include: Compressor (1); A first condenser (2), wherein an inlet of the first condenser (2) is connected to an outlet of the compressor (1); A refrigerator system (405), the refrigerator system (405) comprising a refrigerator flow path, the refrigerator flow path being connected between the outlet of the first condenser (2) and the inlet of the compressor (1); the refrigerator flow path comprising at least a first refrigerator evaporator (4) and a second refrigerator evaporator (5).

2. The vehicle thermal management system (100) according to claim 1, characterized in that: The refrigerator flow path comprises a first flow path and a second flow path arranged in parallel; the first flow path comprises the first refrigerator evaporator (4), the inlet of the first refrigerator evaporator (4) is connected to the outlet of the first condenser (2), and the outlet of the first refrigerator evaporator (4) is connected to the inlet of the compressor (1); The second flow path includes the second refrigerator evaporator (5), the inlet of the second refrigerator evaporator (5) is connected to the outlet of the first condenser (2), and the outlet of the second refrigerator evaporator (5) is connected to the inlet of the compressor (1).

3. The vehicle thermal management system (100) according to claim 2, characterized in that: The refrigerator system (405) further comprises a first coaxial tube (9), wherein the first coaxial tube (9) comprises: a first outer tube, the inlet of the first outer tube being in communication with the outlet of the first condenser (2), and the outlet of the first outer tube being in communication with the inlet of the first refrigerator evaporator (4); A first inner tube, the inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator (4), and the outlet of the first inner tube is connected to the inlet of the compressor (1).

4. The vehicle thermal management system (100) according to claim 3, characterized in that: The refrigerator system (405) further includes a second coaxial tube (101), wherein the second coaxial tube (101) includes: a second outer tube, the inlet of the second outer tube being in communication with the outlet of the first outer tube, and the outlet of the second outer tube being in communication with the inlet of the second refrigerator evaporator (5); A second inner tube, the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator (5), and the outlet of the second inner tube is connected to the inlet of the compressor (1).

5. The vehicle thermal management system (100) according to claim 2, characterized in that: The refrigerator system (405) further includes a second coaxial tube (101), and the second coaxial tube (101) further includes: a second outer tube, the inlet of the second outer tube being in communication with the outlet of the first condenser (2), and the outlet of the second outer tube being in communication with the inlet of the second refrigerator evaporator (5); A second inner tube, the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator (5), and the outlet of the second inner tube is connected to the inlet of the compressor (1).

6. The vehicle thermal management system (100) according to any one of claims 2 to 5, characterized in that: The refrigerator system (405) further includes: a first expansion valve (3), the first expansion valve (3) being arranged in the first flow path; the inlet of the first expansion valve (3) being communicated with the outlet of the first condenser (2), and the outlet of the first expansion valve (3) being communicated with the inlet of the first refrigerator evaporator (4); A second expansion valve (6), wherein the second expansion valve (6) is arranged in the second flow path; the inlet of the second expansion valve (6) is connected to the outlet of the first condenser (2), and the outlet of the second expansion valve (6) is connected to the inlet of the second refrigerator evaporator (5).

7. The vehicle thermal management system (100) according to any one of claims 1 to 5, characterized in that: The refrigerator system (405) further includes: The first box; a first liner, wherein the first liner is disposed in the first box; The first refrigerator evaporator (4) is arranged in the first box body and outside the first inner container; A first heating element (7), wherein the first heating element (7) is arranged in the first box body and outside the first inner container, and is used for heating the first inner container.

8. The vehicle thermal management system (100) according to any one of claims 1 to 5, characterized in that: The refrigerator system (405) further includes: The second box; A second liner is disposed in the second box; The second refrigerator evaporator (5) is arranged in the second box body and outside the second inner container; A second heating element (8), the second heating element (8) is arranged in the second box body and outside the second inner pot, and is used to heat the second inner pot.

9. The vehicle thermal management system (100) according to claim 1, characterized in that: Also includes: a third expansion valve (102), wherein an inlet of the third expansion valve (102) is connected to an outlet of the first condenser (2); An air-conditioning evaporator (103), wherein the inlet of the air-conditioning evaporator (103) is connected to the outlet of the third expansion valve (102), and the outlet of the air-conditioning evaporator (103) is connected to the inlet of the compressor (1).

10. The vehicle thermal management system (100) according to claim 9, characterized in that: Also includes: A first regulating valve (104), wherein the inlet of the first regulating valve (104) is communicated with the outlet of the air-conditioning evaporator (103), and the outlet of the first regulating valve (104) is communicated with the inlet of the compressor (1).

11. The vehicle thermal management system (100) according to claim 9, characterized in that: Also includes: A first switch valve (302), wherein the inlet of the first switch valve (302) is connected to the outlet of the compressor (1), and the outlet of the first switch valve (302) is connected to the inlet of the first condenser (2).

12. The vehicle thermal management system (100) according to claim 1, characterized in that: Also includes: a fourth expansion valve (105), wherein a first end opening of the fourth expansion valve (105) is in communication with an outlet of the first condenser (2); A battery heat exchanger (106), wherein a first end opening of the battery heat exchanger (106) is connected to a second end opening of the fourth expansion valve (105), and a second end opening of the battery heat exchanger (106) is connected to an inlet of the compressor (1).

13. The vehicle thermal management system (100) according to claim 12, characterized in that: Also includes: A second regulating valve (301), wherein a first end opening of the second regulating valve (301) is connected to a second end opening of the first battery heat exchanger (106), and a second end opening of the second regulating valve (301) is connected to an inlet of the compressor (1).

14. The vehicle thermal management system (100) according to claim 13, characterized in that: Also includes: A first one-way valve (305), wherein the inlet of the first one-way valve (305) is connected to the outlet of the first condenser (2), and the outlet of the first one-way valve (305) is connected to the first end opening of the fourth expansion valve (105).

15. The vehicle thermal management system (100) according to claim 14, characterized in that: Also includes: a second switch valve (306), wherein the inlet of the second switch valve (306) is communicated with the outlet of the compressor (1), and the outlet of the second switch valve (306) is communicated with the second end opening of the second regulating valve (301); a third switch valve (307), wherein the inlet of the third switch valve (307) is communicated with the second end opening of the second regulating valve (301), and the outlet of the third switch valve (307) is communicated with the inlet of the compressor (1); A second one-way valve (308), wherein the inlet of the second one-way valve (308) is communicated with the first end opening of the fourth expansion valve (105), and the outlet of the second one-way valve (308) is communicated with the inlet of the compressor (1).

16. The vehicle thermal management system (100) according to claim 15, characterized in that: Also includes: A third one-way valve (309), wherein the inlet of the third one-way valve (309) is connected to the outlet of the first condenser (2), and the outlet of the third one-way valve (309) is connected to the first end opening of the fourth expansion valve (105).

17. The vehicle thermal management system (100) according to claim 16, characterized in that: Also includes: a second condenser (107), wherein an inlet of the second condenser (107) is connected to an outlet of the compressor (1); a fifth expansion valve (303), wherein an inlet of the fifth expansion valve (303) is connected to an outlet of the second condenser (107); A sixth expansion valve (401), wherein the inlet of the sixth expansion valve (401) is connected to the outlet of the fifth expansion valve (303) and the outlet of the second one-way valve (308), and the outlet of the sixth expansion valve (401) is connected to the inlet of the compressor (1).

18. The vehicle thermal management system (100) according to claim 17, characterized in that: Also includes: A fifth one-way valve (403), wherein the inlet of the fifth one-way valve (403) is connected to the outlet of the fifth expansion valve (303) and the outlet of the second one-way valve (308), and the outlet of the fifth one-way valve (403) is connected to the outlet of the first condenser (2), the inlet of the first refrigerator evaporator (4) and the inlet of the second refrigerator evaporator (5).

19. The vehicle thermal management system (100) according to claim 2, characterized in that: The portion of the first flow path between the outlet of the first refrigerator evaporator (4) and the inlet of the compressor (1) is a first flow section; The portion of the second flow path between the outlet of the second refrigerator evaporator (5) and the inlet of the compressor (1) is a second flow section; The vehicle thermal management system (100) further comprises an engine cooling system, wherein the engine cooling system is thermally connected to the first flow section and / or the second flow section.

20. The vehicle thermal management system (100) according to claim 2, characterized in that: The refrigerator system (405) further comprises an engine cooling system; the refrigerator system (405) further comprises a first coaxial tube (9), wherein the first coaxial tube (9) comprises: a first outer tube, the first outer tube being connected to an engine cooling system; A first inner tube, the inlet of the first inner tube is connected to the outlet of the first refrigerator evaporator (4), and the outlet of the first inner tube is connected to the inlet of the compressor (1).

21. The vehicle thermal management system (100) according to claim 20, characterized in that: The refrigerator system (405) further includes a second coaxial tube (101), wherein the second coaxial tube (101) includes: a second outer tube, the second outer tube being connected to the engine cooling system; A second inner tube, the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator (5), and the outlet of the second inner tube is connected to the inlet of the compressor (1).

22. The vehicle thermal management system (100) according to claim 21, characterized in that: The inlet of the first outer tube and the outlet of the second outer tube are connected to the engine cooling system, and the inlet of the second outer tube is communicated with the outlet of the first outer tube.

23. The vehicle thermal management system (100) according to claim 21, characterized in that: The outlet of the first outer tube and the inlet of the second outer tube are connected to the engine cooling system, and the inlet of the first outer tube is communicated with the outlet of the second outer tube.

24. The vehicle thermal management system (100) according to claim 21, characterized in that: The first inlet and the first outlet of the first outer tube are connected to the engine cooling system, the inlet of the second outer tube is connected to the second outlet of the first outer tube, and the outlet of the second outer tube is connected to the second inlet of the first outer tube.

25. The vehicle thermal management system (100) according to claim 21, characterized in that: The inlet and the outlet of the first outer tube are connected to the engine cooling system, and the inlet and the outlet of the second outer tube are connected to the engine cooling system.

26. The vehicle thermal management system (100) according to claim 2, characterized in that: Also includes engine cooling system; The refrigerator system (405) further includes a second coaxial tube (101), wherein the second coaxial tube (101) includes: a second outer tube, the second outer tube being connected to an engine cooling system; A second inner tube, the inlet of the second inner tube is connected to the outlet of the second refrigerator evaporator (5), and the outlet of the second inner tube is connected to the inlet of the compressor (1).

27. The vehicle thermal management system (100) according to claim 21, characterized in that: The engine cooling system comprises: Engine heat exchanger (109); The inlet of the first outer tube is in communication with the outlet of the engine heat exchanger (109); A four-way valve (201), wherein the outlet of the first outer tube is in communication with a first end (A1) of the four-way valve, and the second end (A2) of the four-way valve is in communication with an inlet of the engine heat exchanger (109); When the first refrigerator evaporator (4) or the second refrigerator evaporator (5) is in operation, the first end (A1) of the four-way valve is in communication with the second end (A2) of the four-way valve.

28. The vehicle thermal management system (100) according to claim 27, characterized in that: The engine cooling system further comprises a three-way valve (202), wherein a first end (B1) of the three-way valve is in communication with an outlet of the engine heat exchanger (109), a second end (B2) of the three-way valve is in communication with an inlet of the first outer tube, and a third end (B3) of the three-way valve is capable of being in communication with a third end (A3) of the four-way valve; When the first refrigerator evaporator (4) or the second refrigerator evaporator (5) is in operation, the first end (A1) of the four-way valve is connected to the second end (A2) of the four-way valve; the third end (B3) of the three-way valve is disconnected from the third end (A3) of the four-way valve, and the first end (B1) of the three-way valve is connected to the second end (B2) of the three-way valve; When the first refrigerator evaporator (4) and the second refrigerator evaporator (5) are closed, the first end (A1) of the four-way valve is disconnected from the second end (A2) of the four-way valve, and the second end (A2) of the four-way valve is connected to the third end (A3) of the four-way valve; the third end (B3) of the three-way valve is connected to the third end (A3) of the four-way valve.

29. The vehicle thermal management system (100) according to claim 28, characterized in that: The engine cooling system further comprises a third heating element (203), the outlet of the third heating element (203) being in communication with the first end (B1) of the three-way valve; and the fourth end (A4) of the four-way valve being in communication with the inlet of the third heating element (203).

30. The vehicle thermal management system (100) according to claim 1, characterized in that: The first refrigerator evaporator (4) and the second refrigerator evaporator (5) are arranged in series.

31. A vehicle, characterized in that: The vehicle thermal management system (100) comprises the vehicle thermal management system (100) according to any one of claims 1 to 30.

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