Thermal management system and vehicle

Abstract

The embodiment of the invention discloses a heat management system and a vehicle. The heat management system comprises a refrigerant loop and a water loop. The refrigerant loop comprises a first refrigerant compressor, a water-cooling condenser, an evaporative condenser, a second refrigerant compressor, an evaporator, a gas-liquid separator and a liquid storage device; the water loop comprises a warm air core body, an electronic water pump, a multi-way valve and a heat dissipation water tank; wherein an outlet of the first refrigerant compressor is communicated with a first inlet of the evaporative condenser, a first outlet of the evaporative condenser is communicated with a first inlet of the gas-liquid separator, and a first outlet of the gas-liquid separator is communicated with an inlet of the first refrigerant compressor; an outlet of the second refrigerant compressor is communicated with a refrigerant side inlet of the water-cooling condenser, a refrigerant side outlet of the water-cooling condenser is communicated with a second inlet of the evaporative condenser through the liquid storage device, and a second outlet of the evaporative condenser is communicated with an inlet of the second refrigerant compressor. According to the technical scheme provided by the embodiment of the invention, the cost can be reduced while the working reliability of the system is ensured.

Description

Technical Field

[0001] The embodiments of the present invention relate to thermal management technology, and more particularly, to a thermal management system and a vehicle. Background Art

[0002] Thermal management systems, such as those used in vehicles, provide cooling or heating for the vehicle and are an important component of the vehicle.

[0003] At present, existing thermal management systems have problems such as the refrigerant used leads to high system operating pressure and high component development costs, or the refrigerant used has low development costs but has safety issues, affecting work reliability. Summary of the Invention

[0004] Embodiments of the present invention provide a thermal management system and a vehicle, so as to reduce costs while ensuring the operating reliability of the system.

[0005] In a first aspect, an embodiment of the present invention provides a thermal management system comprising: a refrigerant circuit and a water circuit; the refrigerant circuit comprises a first refrigerant compressor, a water-cooled condenser, an evaporative condenser, a second refrigerant compressor, an evaporator, a gas-liquid separator, and a liquid reservoir; the water circuit comprises a heater core, an electronic water pump, a multi-way valve, and a heat dissipation water tank;

[0006] wherein, the outlet of the first refrigerant compressor is communicated with the first inlet of the evaporative condenser, the first outlet of the evaporative condenser is communicated with the first inlet of the gas-liquid separator, and the first outlet of the gas-liquid separator is communicated with the inlet of the first refrigerant compressor; the outlet of the second refrigerant compressor is communicated with the refrigerant-side inlet of the water-cooled condenser, the refrigerant-side outlet of the water-cooled condenser is communicated with the second inlet of the evaporative condenser through the liquid reservoir, and the second outlet of the evaporative condenser is communicated with the inlet of the second refrigerant compressor; the second outlet of the gas-liquid separator is communicated with the inlet of the evaporator, and the outlet of the evaporator is communicated with the second inlet of the gas-liquid separator; an electronic expansion valve is provided in the pipeline between the liquid reservoir and the evaporative condenser and the inlet of the evaporator; the outlet of the radiator water tank is communicated with the waterway-side inlet of the water-cooled condenser through the electronic water pump, the waterway-side outlet of the water-cooled condenser is communicated with the inlet of the radiator water tank, the inlet of the radiator water tank is communicated with the inlet of the heater core through the multi-way valve, and the outlet of the heater core is communicated with the waterway-side inlet of the radiator water tank or the water-cooled condenser.

[0007] Optionally, the refrigerant circuit also includes: a battery cooler, the electronic expansion valve includes a first electronic expansion valve, a second electronic expansion valve and a third electronic expansion valve; the second outlet of the gas-liquid separator is connected to the second inlet of the gas-liquid separator through the battery cooler, the first electronic expansion valve is located in the pipeline between the liquid reservoir and the evaporative condenser, the second electronic expansion valve is located at the inlet of the evaporator, and the third electronic expansion valve is located at one end of the battery cooler connected to the second outlet of the gas-liquid separator.

[0008] Optionally, the water circuit also includes a battery pack assembly, a motor assembly and a water heater, the electronic water pump includes a first electronic water pump, a second electronic water pump and a third electronic water pump, the multi-way valve includes a first five-way valve, a second five-way valve and a first three-way regulating valve; the first end of the first five-way valve is connected to the third end of the second five-way valve through the water heater, the outlet of the radiator water tank is connected to the second end of the first five-way valve in sequence through the motor assembly, the first electronic water pump and the second end of the first five-way valve, the third end of the first five-way valve and the outlet of the heater core are both connected to the waterway side inlet of the water-cooled condenser through the second electronic water pump, and the water cooling The water channel side outlet of the condenser is connected to the first end of the first three-way regulating valve, the second end of the first three-way regulating valve is connected to the inlet of the heater core, the third end of the first three-way regulating valve is connected to the first end of the second five-way valve, the second end of the second five-way valve is connected to the inlet of the battery pack assembly through the third electronic expansion valve, the outlet of the battery pack assembly is connected to the fifth end of the first five-way valve, the fourth end of the first five-way valve is connected to the second end of the second five-way valve, the fourth end of the second five-way valve is connected to the outlet of the radiator water tank, and the fifth end of the second five-way valve is connected to the inlet of the radiator water tank.

[0009] Optionally, the water circuit also includes a fuel engine assembly and a three-way water valve, the radiator water tank includes a low-temperature radiator water tank and a high-temperature radiator water tank, the temperature of the low-temperature radiator water tank is lower than that of the high-temperature radiator water tank, the multi-way valve also includes a second three-way regulating valve, and the electronic water pump also includes a fourth electronic water pump; the outlet of the low-temperature radiator water tank is connected to the motor assembly, the inlet of the low-temperature radiator water tank is connected to the fifth end of the second five-way valve, the outlet of the high-temperature radiator water tank is connected to the inlet of the fuel engine assembly, the outlet of the fuel engine assembly is connected to the first end of the second three-way regulating valve through the fourth electronic water pump, the second end of the second three-way regulating valve is connected to the inlet of the high-temperature radiator water tank, the third end of the second three-way regulating valve is connected to the first end of the first three-way regulating valve, the inlet of the fuel engine assembly is connected to the first end of the three-way water valve, and the second electronic water pump is connected to the waterway side inlet of the water-cooled condenser through the second and third ends of the three-way water valve in sequence.

[0010] Optionally, the refrigerant circuit further includes a blower, and the water circuit further includes a fan, the fan is located on one side of the heat dissipation water tank, and the blower is located on one side of the evaporator.

[0011] Optionally, the electronic expansion valve includes a first electronic expansion valve and a second electronic expansion valve, the first electronic expansion valve is located in the pipeline between the liquid reservoir and the evaporative condenser, and the second electronic expansion valve is located at the inlet of the evaporator.

[0012] Optionally, the water circuit also includes: a fuel engine assembly, the electronic water pump includes a first electronic water pump and a second electronic water pump, the multi-way valve includes a three-way regulating valve, and the radiator water tank includes a low-temperature radiator water tank and a high-temperature radiator water tank; the outlet of the fuel engine assembly is connected to the first end of the three-way regulating valve through the second electronic water pump, the second end and the third end of the three-way regulating valve are respectively connected to the inlet of the high-temperature radiator water tank and the inlet of the heater core, the outlet of the high-temperature radiator water tank and the outlet of the heater core are both connected to the inlet of the fuel engine assembly, the outlet of the low-temperature radiator water tank is connected to the waterway side inlet of the water-cooled condenser through the first electronic water pump, and the waterway side outlet of the water-cooled condenser is connected to the inlet of the low-temperature radiator water tank.

[0013] Optionally, the gas-liquid separator is an integrated coaxial tube structure.

[0014] In a second aspect, an embodiment of the present invention provides a vehicle comprising the thermal management system as described in the first aspect.

[0015] Optionally, the vehicle is a hybrid vehicle, a pure electric vehicle, or a fuel vehicle.

[0016] The thermal management system and vehicle provided by the embodiment of the present invention include: a refrigerant circuit and a water circuit; the refrigerant circuit includes a first refrigerant compressor, a water-cooled condenser, an evaporative condenser, a second refrigerant compressor, an evaporator, a gas-liquid separator and a liquid reservoir; the water circuit includes a heater core, an electronic water pump, a multi-way valve and a heat dissipation water tank; wherein, the outlet of the first refrigerant compressor is connected to the first inlet of the evaporative condenser, the first outlet of the evaporative condenser is connected to the first inlet of the gas-liquid separator, and the first outlet of the gas-liquid separator is connected to the inlet of the first refrigerant compressor; the outlet of the second refrigerant compressor is connected to the refrigerant side inlet of the water-cooled condenser, and the refrigerant side of the water-cooled condenser is connected to the refrigerant side of the water-cooled condenser. The outlet is connected to the second inlet of the evaporative condenser through the liquid reservoir, and the second outlet of the evaporative condenser is connected to the inlet of the second refrigerant compressor; the second outlet of the gas-liquid separator is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the second inlet of the gas-liquid separator. The pipeline between the liquid reservoir and the evaporative condenser and the inlet of the evaporator are both equipped with an electronic expansion valve; the outlet of the radiator water tank is connected to the waterway inlet of the water-cooled condenser through an electronic water pump, and the waterway outlet of the water-cooled condenser is connected to the inlet of the radiator water tank. The inlet of the radiator water tank is connected to the inlet of the heater core through a multi-way valve, and the outlet of the heater core is connected to the waterway inlet of the radiator water tank or the waterway inlet of the water-cooled condenser. The thermal management system and vehicle provided by the embodiment of the present invention output the first refrigerant through the first refrigerant compressor and output the second refrigerant through the second refrigerant compressor, realizing the combined use of the first and second refrigerants. The second refrigerant has better low-temperature heating performance and can ensure the operating reliability of the system. The first refrigerant is a natural and environmentally friendly refrigerant with low development cost, thereby ensuring the operating reliability of the system while reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a thermal management system provided by an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of a cooling mode of a thermal management system provided by an embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of a heating mode of a thermal management system provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of another thermal management system provided by an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of another cooling mode of a thermal management system provided by an embodiment of the present invention;

[0022] Figure 6 is a schematic diagram of another heating mode of a thermal management system provided by an embodiment of the present invention;

[0023] Figure 7 This is a schematic structural diagram of another thermal management system provided by an embodiment of the present invention;

[0024] Figure 8 is a schematic diagram of another cooling mode of a thermal management system provided by an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of another heating mode of a thermal management system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0027] Figure 1 This is a schematic diagram of the structure of a thermal management system provided by an embodiment of the present invention. Figure 1 The thermal management system includes: a refrigerant circuit and a water circuit; the refrigerant circuit includes a first refrigerant compressor M1, a water-cooled condenser WC, an evaporative condenser EC, a second refrigerant compressor M2, an evaporator EV, an air-liquid separator AC and a liquid reservoir RD; the water circuit includes a heater core HE, an electronic water pump, a multi-way valve and a heat dissipation water tank.

[0028] Among them, the outlet of the first refrigerant compressor M1 is connected to the first inlet of the evaporative condenser EC, the first outlet of the evaporative condenser EC is connected to the first inlet of the gas-liquid separator AC, and the first outlet of the gas-liquid separator AC is connected to the inlet of the first refrigerant compressor M1; the outlet of the second refrigerant compressor M2 is connected to the refrigerant side inlet of the water-cooled condenser WC, the refrigerant side outlet of the water-cooled condenser WC is connected to the second inlet of the evaporative condenser EC through the liquid reservoir RD, and the second outlet of the evaporative condenser EC is connected to the inlet of the second refrigerant compressor M2; the outlet of the gas-liquid separator AC is connected to the refrigerant side inlet of the water-cooled condenser WC, and the refrigerant side outlet of the water-cooled condenser WC is connected to the second inlet of the evaporative condenser EC through the liquid reservoir RD, and the second outlet of the evaporative condenser EC is connected to the inlet of the second refrigerant compressor M2; The second outlet is connected to the inlet of the evaporator EV, the outlet of the evaporator EV is connected to the second inlet of the gas-liquid separator AC, and the pipeline between the liquid reservoir RD and the evaporative condenser EC and the inlet of the evaporator EV are both provided with an electronic expansion valve; the outlet of the radiator water tank is connected to the water side inlet of the water-cooled condenser WC through an electronic water pump, the water side outlet of the water-cooled condenser WC is connected to the inlet of the radiator water tank, the inlet of the radiator water tank is connected to the inlet of the heater core HE through a multi-way valve, and the outlet of the heater core HE is connected to the water side inlet of the radiator water tank or the water-cooled condenser WC.

[0029] Specifically, the thermal management system can be a thermal management system of a vehicle, and the vehicle can be a pure electric vehicle, a hybrid vehicle, or a fuel vehicle. The first refrigerant compressor M1 is used to output the first refrigerant, and the second refrigerant compressor M2 is used to output the second refrigerant. For example, the first refrigerant is carbon dioxide, and the second refrigerant is propane. The gas-liquid separator is an integrated coaxial tube structure to make full use of energy. The first refrigerant is a low-temperature system refrigerant, and the first refrigerant compressor can operate below the critical pressure, which can greatly reduce its component development cost while giving full play to the advantages of the first refrigerant. The second refrigerant can be used as a high-temperature refrigerant. To avoid the risk of combustion and explosion, the second refrigerant compressor M2 and Figure 1 The components in the middle dashed box are compactly arranged and enclosed in a sturdy box, ensuring that the second refrigerant charge is within the safety assessment charge. The box can be equipped with a refrigerant concentration detection sensor. If the second refrigerant leaks, relevant measures can be taken in a timely manner, while preventing the first refrigerant from flowing into the box and causing combustion and explosion. In addition, a refrigerant concentration sensor can be set in the box, and it can also be filled with flame-retardant gas to prevent the second refrigerant from leaking and causing combustion and explosion, thereby ensuring safety. In addition, even if it explodes, the box can block the damage caused by the explosion, thereby ensuring the safe use of the first refrigerant and giving full play to the advantages of the first refrigerant. The first refrigerant compressor M1 and the second refrigerant compressor M2 output the first refrigerant and the second refrigerant respectively, so that the first refrigerant and the second refrigerant can be used in combination. The second refrigerant has better low-temperature heating performance and can ensure the reliability of the system. As a natural and environmentally friendly refrigerant, the first refrigerant has a low development cost, thereby ensuring the reliability of the system while reducing costs.

[0030] The thermal management system provided in this embodiment includes: a refrigerant circuit and a water circuit; the refrigerant circuit includes a first refrigerant compressor, a water-cooled condenser, an evaporative condenser, a second refrigerant compressor, an evaporator, a gas-liquid separator and a liquid reservoir; the water circuit includes a heater core, an electronic water pump, a multi-way valve and a heat dissipation water tank; wherein, the outlet of the first refrigerant compressor is connected to the first inlet of the evaporative condenser, the first outlet of the evaporative condenser is connected to the first inlet of the gas-liquid separator, and the first outlet of the gas-liquid separator is connected to the inlet of the first refrigerant compressor; the outlet of the second refrigerant compressor is connected to the refrigerant side inlet of the water-cooled condenser, and the refrigerant side outlet of the water-cooled condenser is connected through the storage tank The liquid reservoir is connected to the second inlet of the evaporative condenser, and the second outlet of the evaporative condenser is connected to the inlet of the second refrigerant compressor; the second outlet of the gas-liquid separator is connected to the inlet of the evaporator, and the outlet of the evaporator is connected to the second inlet of the gas-liquid separator. The pipeline between the liquid reservoir and the evaporative condenser and the inlet of the evaporator are both provided with an electronic expansion valve; the outlet of the heat sink is connected to the waterway inlet of the water-cooled condenser through an electronic water pump, and the waterway outlet of the water-cooled condenser is connected to the inlet of the heat sink, and the inlet of the heat sink is connected to the inlet of the heater core through a multi-way valve, and the outlet of the heater core is connected to the waterway inlet of the heat sink or the water-cooled condenser. The thermal management system provided in this embodiment outputs the first refrigerant through the first refrigerant compressor and outputs the second refrigerant through the second refrigerant compressor, so that the first refrigerant and the second refrigerant are used in combination. The second refrigerant has better low-temperature heating performance and can ensure the working reliability of the system. The first refrigerant is a natural and environmentally friendly refrigerant with a low development cost, thereby ensuring the working reliability of the system while reducing costs.

[0031] Based on the above implementation, the thermal management system is applied to pure electric vehicles as an example. Figure 1 Optionally, the refrigerant circuit also includes: a battery cooler CH, the electronic expansion valve includes a first electronic expansion valve EXV1, a second electronic expansion valve EXV2 and a third electronic expansion valve EXV3; the second outlet of the gas-liquid separator AC is connected to the second inlet of the gas-liquid separator AC through the battery cooler CH, the first electronic expansion valve EXV1 is located in the pipeline between the liquid reservoir RD and the evaporative condenser EC, the second electronic expansion valve EXV2 is located at the inlet of the evaporator EV, and the third electronic expansion valve EXV3 is located at one end of the battery cooler CH connected to the second outlet of the gas-liquid separator AC.

[0032] For example, Figure 2 Schematic diagram of a cooling mode of a thermal management system provided by an embodiment of the present invention. Figure 2When the refrigerant circuit is in cooling mode, the inlet of the first refrigerant compressor M1 inhales low-temperature saturated gas, and the gas is compressed by the first refrigerant compressor M1 to discharge high-temperature and high-pressure gaseous refrigerant, namely the first refrigerant, and then flows into the evaporative condenser EC. The refrigerant flows out of the evaporative condenser EC and enters the gas-liquid separator integrated coaxial tube, namely the above-mentioned gas-liquid separator AC, and then flows out from it through the first electronic expansion valve EXV1 throttling to enter the battery cooler CH, and then flows into the evaporator EV after throttling through the second electronic expansion valve EXV2. The refrigerant flowing out after evaporation from the battery cooler CH and the refrigerant flowing out after evaporation from the evaporator EV merge and flow into the gas-liquid separator integrated coaxial tube, and then enters the inlet of the first refrigerant compressor M1 to complete the low-temperature stage refrigerant cycle. The inlet of the second refrigerant compressor M2 inhales low-temperature superheated gas. The gas is compressed by the second refrigerant compressor M2 and discharged as high-temperature and high-pressure gaseous refrigerant, which flows into the water-cooled condenser WC and then into the liquid reservoir RD. After flowing out of the liquid reservoir RD, it passes through the third electronic expansion valve EXV3 for throttling and enters the evaporative condenser EC to complete the evaporation process, and then enters the inlet of the second refrigerant compressor M2 to complete the high-temperature refrigerant cycle.

[0033] For example, Figure 3 Schematic diagram of a heating mode of a thermal management system provided by an embodiment of the present invention. Figure 3 In heating mode, the refrigerant circuit draws in low-temperature saturated gas at the inlet of the first refrigerant compressor M1. This gas is compressed by the first refrigerant compressor M1 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the evaporative condenser EC. The refrigerant flows out of the evaporative condenser EC and enters the gas-liquid separator integrated coaxial tube. From there, it is throttled by the first electronic expansion valve EXV1 and enters the battery cooler CH. After evaporation from the battery cooler CH, the refrigerant flows into the gas-liquid separator integrated coaxial tube and then enters the inlet of the first refrigerant compressor M1, completing the low-temperature refrigerant cycle. The inlet of the second refrigerant compressor M2 draws in low-temperature, superheated gas. This gas is compressed by the second refrigerant compressor M2 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the water-cooled condenser WC. It then enters the liquid reservoir RD. After exiting the liquid reservoir RD, it is throttled by the third electronic expansion valve EXV3 and enters the evaporative condenser EC, completing the evaporation process. It then enters the inlet of the second refrigerant compressor M2, completing the high-temperature refrigerant cycle.

[0034] Optionally, the water circuit also includes a battery pack assembly BA, a motor assembly MC and a water heater WP, the electronic water pump includes a first electronic water pump P1, a second electronic water pump P2 and a third electronic water pump P3, and the multi-way valve includes a first five-way valve MV1, a second five-way valve MV2 and a first three-way regulating valve PV1; the first end of the first five-way valve MV1 is connected to the third end of the second five-way valve MV2 through the water heater WP, and the outlet of the radiator water tank (low-temperature radiator water tank LTR) is connected to the second end of the first five-way valve MV1 in sequence through the motor assembly MC and the first electronic water pump P1, and the third end of the first five-way valve MV1 and the outlet of the heater core HE are both connected to the waterway side inlet of the water-cooled condenser WC through the second electronic water pump P2 The water-side outlet of the water-cooled condenser WC is connected to the first end of the first three-way regulating valve PV1, the second end of the first three-way regulating valve PV1 is connected to the inlet of the warm air core HE, the third end of the first three-way regulating valve PV1 is connected to the first end of the second five-way valve MV2, the second end of the second five-way valve MV2 is connected to the inlet of the battery pack assembly BA through the third electronic expansion valve EXV3, the outlet of the battery pack assembly BA is connected to the fifth end of the first five-way valve MV1, the fourth end of the first five-way valve MV1 is connected to the second end of the second five-way valve MV2, the fourth end of the second five-way valve MV2 is connected to the outlet of the radiator water tank LTR, and the fifth end of the second five-way valve MV2 is connected to the inlet of the low-temperature radiator water tank LTR.

[0035] Specifically, in cooling mode, the vehicle's passenger compartment is cooled by the air flowing from the blower mounted on one side of the evaporator, which exchanges heat with the evaporator. This air carries the cooling energy generated by the evaporator to the passenger compartment, thereby cooling the passenger compartment. The hot antifreeze at the outlet of the battery pack assembly BA passes through the first five-way valve MV1 and the water heater WP before reaching the battery cooler CH. There, heat exchange occurs with the battery cooler CH, cooling the hot antifreeze to the required inlet temperature of the battery pack assembly BA. The antifreeze then passes through the second five-way valve MV2 and the third electronic water pump before reaching the battery pack assembly BA. After completing the heat exchange with the battery pack assembly BA, the coolant enters the next cycle. The high-temperature antifreeze at the water-side outlet of the water-cooled condenser WC passes through the first three-way regulating valve PV1 and the second five-way valve MV2 to the low-temperature radiator LTR for cooling. The cooled antifreeze enters the motor assembly MC to complete the cooling of the motor assembly MC, and then passes through the first electronic water pump P1, the first five-way valve MV1, and the second electronic water pump P2 to enter the water-side inlet of the water-cooled condenser WC and enter the next cycle. In heating mode, the high-temperature antifreeze obtained after the water-cooled condenser WC releases heat passes through the first three-way regulating valve PV1 and is divided into two paths according to the heat requirements of the passenger compartment and battery pack assembly. One path passes through the heater core HE to meet the passenger compartment heating requirements, and the other path passes through the second five-way valve MV2 and the third electronic water pump P3 to reach the battery pack assembly to meet the battery pack assembly heating requirements. The other path then passes through the first five-way valve MV1 to merge with the antifreeze flowing out of the heater core. The merged antifreeze then passes through the second electronic water pump P2 to enter the water-cooled condenser and enter the next cycle. After absorbing heat in the battery cooler CH, the low-temperature antifreeze is obtained and passes through the second five-way valve MV2 to the low-temperature radiator tank LTR. The low-temperature antifreeze absorbs heat from the external environment in the low-temperature radiator tank LTR, then passes through the motor assembly MC to absorb the motor assembly's waste heat, gradually raising the antifreeze temperature. The antifreeze then passes through the first electronic water pump P1, the first five-way valve MV1, and the water heater WP to enter the battery cooler CH and enter the next cycle.

[0036] In one embodiment, the thermal management system is applied to a hybrid vehicle. Figure 4 Schematic diagram of another thermal management system provided by an embodiment of the present invention. Figure 4Optionally, the water circuit also includes a fuel engine assembly FE and a three-way water valve TV, the radiator water tank includes a low-temperature radiator water tank LTR and a high-temperature radiator water tank HTR, the temperature of the low-temperature radiator water tank LTR is lower than that of the high-temperature radiator water tank HTR, the multi-way valve also includes a second three-way regulating valve PV2, and the electronic water pump also includes a fourth electronic water pump P4; the outlet of the low-temperature radiator water tank LTR is connected to the motor assembly, the inlet of the low-temperature radiator water tank LTR is connected to the fifth end of the second five-way valve MV2, the outlet of the high-temperature radiator water tank HTR is connected to the inlet of the fuel engine assembly FE, the outlet of the fuel engine assembly FE is connected to the first end of the second three-way regulating valve PV2 through the fourth electronic water pump P4, the second end of the second three-way regulating valve PV2 is connected to the inlet of the high-temperature radiator water tank HTR, the third end of the second three-way regulating valve PV2 is connected to the first end of the first three-way regulating valve PV1, the inlet of the fuel engine assembly FE is connected to the first end of the three-way water valve TV, and the second electronic water pump P2 is connected to the waterway side inlet of the water-cooled condenser WC through the second and third ends of the three-way water valve TV in sequence.

[0037] For example, Figure 5 Schematic diagram of another cooling mode of a thermal management system provided by an embodiment of the present invention. Figure 5In cooling mode, the inlet of the first refrigerant compressor M1 draws in low-temperature saturated gas. This gas is compressed by the first refrigerant compressor M1 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the evaporative condenser EC. The refrigerant flows out of the evaporative condenser EC and enters the gas-liquid separator integrated coaxial tube. From there, the refrigerant is throttled by the first electronic expansion valve EXV1 and enters the battery cooler CH. After throttling by the second electronic expansion valve EXV2, it enters the evaporator EV. The refrigerant evaporated from the battery cooler CH and the refrigerant evaporated from the evaporator EV merge and flow into the gas-liquid separator integrated coaxial tube. It then enters the inlet of the first refrigerant compressor M1, completing the low-temperature refrigerant cycle. The inlet of the second refrigerant compressor M2 draws in low-temperature, superheated gas. This gas is compressed by the second refrigerant compressor M2 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the water-cooled condenser WC and then into the liquid reservoir RD. After flowing out of the liquid reservoir RD, it passes through the third electronic expansion valve EXV3 and enters the evaporative condenser EC, completing the evaporation process. It then enters the inlet of the second refrigerant compressor M2, completing the high-temperature refrigerant cycle. In this mode, the passenger compartment is cooled by the flowing air generated by the blower, which exchanges heat with the evaporator EV. This cooling is then carried away from the evaporator to the passenger compartment, thereby cooling the cabin. The hot antifreeze at the outlet of the battery pack assembly BA passes through the first five-way valve MV1 and the water heater before reaching the battery cooler CH. There, heat is exchanged with the battery cooler CH, cooling the hot antifreeze to the required temperature at the battery inlet. The antifreeze then passes through the second five-way valve MV2 and the third electronic water pump P3 before reaching the battery pack assembly BA. After completing the heat exchange with the battery pack assembly BA, the coolant enters the next cycle. The high-temperature antifreeze at the water-side outlet of the water-cooled condenser WC passes through the first three-way regulating valve PV1 and the second five-way valve MV2 to reach the low-temperature radiator water tank for cooling. The cooled antifreeze enters the motor assembly to complete the cooling of the motor assembly, and then passes through the first electronic water pump P1, the first five-way valve MV1, and the second electronic water pump P2 to enter the water-cooled condenser EC, and then enter the next cycle; the high-temperature antifreeze at the outlet of the fuel engine assembly FE passes through the fourth electronic water pump P4 and the second three-way regulating valve PV2 to reach the high-temperature radiator water tank for cooling. The cooled antifreeze enters the fuel engine assembly to complete the cooling of the fuel engine, and then enters the next cycle.

[0038] For example, Figure 6 Schematic diagram of another heating mode of a thermal management system provided by an embodiment of the present invention. Figure 6In heating mode, the inlet of the first refrigerant compressor M1 draws in low-temperature saturated gas. This gas is compressed by the first refrigerant compressor M1 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the evaporative condenser EC. The refrigerant flows out of the evaporative condenser EC and enters the gas-liquid separator integrated coaxial tube. From there, it is throttled by the first electronic expansion valve EXV1 and enters the battery cooler CH. After evaporation from the battery cooler CH, the refrigerant flows into the gas-liquid separator integrated coaxial tube and then enters the inlet of the first refrigerant compressor M1, completing the low-temperature refrigerant cycle. The inlet of the second refrigerant compressor M2 draws in low-temperature, superheated gas. This gas is compressed by the second refrigerant compressor M2 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the water-cooled condenser WC and then into the liquid reservoir RD. After flowing out of the liquid reservoir RD, it is throttled by the third electronic expansion valve EXV3 and enters the evaporative condenser EC, completing the evaporation process. It then enters the inlet of the second refrigerant compressor M2, completing the high-temperature refrigerant cycle. In this mode, the high-temperature antifreeze generated after the water-cooled condenser releases heat passes through the first three-way regulating valve PV1 and is divided into two paths based on the heat requirements of the passenger compartment and battery pack assembly. One path passes through the heater core to meet the passenger compartment heating needs, while the other path passes through the second five-way valve MV2 and the third electronic water pump P3 to reach the battery pack assembly to meet the battery pack assembly heating needs. The other path then passes through the first five-way valve MV1 to merge with the antifreeze flowing out of the heater core. The combined antifreeze then passes through the second electronic water pump P2 to enter the water-cooled condenser WC before entering the next cycle. The low-temperature antifreeze generated after absorbing heat in the battery cooler passes through the second five-way valve MV2 to the low-temperature radiator water tank. In the low-temperature radiator water tank, the lower-temperature antifreeze absorbs heat from the external environment and then passes through the motor assembly to absorb the motor assembly's waste heat, gradually raising the antifreeze temperature. The antifreeze then passes through the first electronic water pump, the first five-way valve MV1, and the water heater to enter the battery cooler before entering the next cycle. The fuel engine assembly and the water heater can compensate for heat from the high-temperature side and the low-temperature side, respectively, in specific scenarios.

[0039] Optionally, the refrigerant circuit further includes a blower, and the water circuit further includes a fan CF, with the fan being located on one side of the heat sink and the blower being located on one side of the evaporator. The fan is used to dissipate heat from the heat sink, and the blower is used to generate flowing air for heat exchange with the evaporator.

[0040] In another embodiment, the thermal management system is applied to a fuel vehicle. Figure 7 This is a schematic diagram of the structure of another thermal management system provided by an embodiment of the present invention. Figure 7Optionally, the electronic expansion valve includes a first electronic expansion valve EXV1 and a second electronic expansion valve EXV2. The first electronic expansion valve EXV1 is located in the pipeline between the liquid reservoir RD and the evaporative condenser EC, and the second electronic expansion valve EXV2 is located at the inlet of the evaporator EV. The water circuit also includes: a fuel engine assembly FE, an electronic water pump including a first electronic water pump P1 and a second electronic water pump P2, a multi-way valve including a first three-way regulating valve PV1, and a radiator water tank including a low-temperature radiator water tank TLR and a high-temperature radiator water tank HLR; the outlet of the fuel engine assembly FE is connected to the first end of the first three-way regulating valve PV1 through the second electronic water pump P2, the second end and the third end of the first three-way regulating valve PV1 are connected to the inlet of the high-temperature radiator water tank HTR and the inlet of the heater core HE, respectively, the outlet of the high-temperature radiator water tank FE and the outlet of the heater core HE are both connected to the inlet of the fuel engine assembly FE, the outlet of the low-temperature radiator water tank TLR is connected to the waterway side inlet of the water-cooled condenser WC through the first electronic water pump P1, and the waterway side outlet of the water-cooled condenser WC is connected to the inlet of the low-temperature radiator water tank TLR.

[0041] For example, Figure 8 This is a schematic diagram of another cooling mode of a thermal management system provided by an embodiment of the present invention. Figure 8 In cooling mode, the inlet of the first refrigerant compressor M1 draws in low-temperature saturated gas. This gas is compressed by the first refrigerant compressor M1 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the evaporative condenser. From there, the refrigerant flows into the gas-liquid separator integrated coaxial tube. From there, it passes through the first electronic expansion valve, throttles, and enters the evaporator. After evaporation in the evaporator, the refrigerant flows into the gas-liquid separator integrated coaxial tube, then enters the inlet of the first refrigerant compressor M1, completing the low-temperature refrigerant cycle. The inlet of the second refrigerant compressor M2 draws in low-temperature saturated gas. This gas is compressed by the second refrigerant compressor M2 and discharged as high-temperature, high-pressure gaseous refrigerant, which flows into the water-cooled condenser. From there, it enters the liquid reservoir, passes through the second electronic expansion valve, throttles, and enters the evaporative condenser, completing the evaporation process. It then enters the inlet of the second refrigerant compressor M2, completing the high-temperature refrigerant cycle. In this mode, cooling the passenger compartment is achieved by the flow of air generated by the blower exchanging heat with the evaporator, carrying the cooling energy generated by the evaporator to the passenger compartment, thereby cooling the passenger compartment. The high-temperature antifreeze at the water-side outlet of the water-cooled condenser passes through the low-temperature radiator water tank for cooling, and the cooled antifreeze passes through the first electronic water pump into the water-cooled condenser before entering the next cycle; the high-temperature antifreeze at the outlet of the fuel engine passes through the second electronic water pump and the first three-way regulating valve to reach the high-temperature radiator water tank for cooling, and the cooled antifreeze enters the fuel engine assembly, completing the cooling of the fuel engine before entering the next cycle.

[0042] For example, Figure 9This is a schematic diagram of another heating mode of a thermal management system provided by an embodiment of the present invention. Figure 9 In heating mode, the high-temperature coolant at the outlet of the fuel engine assembly is reasonably distributed to the passenger compartment through the first three-way regulating valve according to the heating needs of the passenger compartment. The remaining excess heat is released to the external environment through the high-temperature radiator water tank, completing the heating needs of the passenger compartment and the heat dissipation needs of the fuel engine assembly.

[0043] This embodiment further provides a vehicle including a thermal management system according to any embodiment of the present invention. The vehicle is a hybrid vehicle, a pure electric vehicle, or a fuel-powered vehicle, and the thermal management system can provide cooling, heating, defrosting, and dehumidification for the vehicle. The specific cooling and heating processes can be found in the corresponding descriptions above and are not further elaborated here.

[0044] The vehicle provided in this embodiment and the thermal management system provided in any embodiment of the present invention belong to the same inventive concept and have corresponding beneficial effects. For technical details not detailed in this embodiment, please refer to the thermal management system provided in any embodiment of the present invention.

[0045] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations, and substitutions are possible for those skilled in the art without departing from the scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A thermal management system, characterized in that: include: A refrigerant circuit and a water circuit; the refrigerant circuit includes a first refrigerant compressor, a water-cooled condenser, an evaporative condenser, a second refrigerant compressor, an evaporator, a gas-liquid separator and a liquid reservoir; the water circuit includes a heater core, an electronic water pump, a multi-way valve and a heat dissipation water tank; The outlet of the first refrigerant compressor is communicated with the first inlet of the evaporative condenser, the first outlet of the evaporative condenser is communicated with the first inlet of the gas-liquid separator, and the first outlet of the gas-liquid separator is communicated with the inlet of the first refrigerant compressor; the outlet of the second refrigerant compressor is communicated with the refrigerant side inlet of the water-cooled condenser, the refrigerant side outlet of the water-cooled condenser is communicated with the second inlet of the evaporative condenser through the liquid reservoir, and the second outlet of the evaporative condenser is communicated with the inlet of the second refrigerant compressor; the second outlet of the gas-liquid separator is communicated with the inlet of the evaporator, the outlet of the evaporator is communicated with the second inlet of the gas-liquid separator, and the pipeline between the liquid reservoir and the evaporative condenser and the inlet of the evaporator are both provided with an electronic expansion valve; the outlet of the radiator water tank is communicated with the waterway side inlet of the water-cooled condenser through the electronic water pump, the waterway side outlet of the water-cooled condenser is communicated with the inlet of the radiator water tank, the inlet of the radiator water tank is communicated with the inlet of the heater core through the multi-way valve, and the outlet of the heater core is communicated with the waterway side inlet of the radiator water tank or the water-cooled condenser.

2. The thermal management system according to claim 1, characterized in that: The refrigerant circuit also includes: a battery cooler, the electronic expansion valve includes a first electronic expansion valve, a second electronic expansion valve and a third electronic expansion valve; the second outlet of the gas-liquid separator is connected to the second inlet of the gas-liquid separator through the battery cooler, the first electronic expansion valve is located in the pipeline between the liquid reservoir and the evaporative condenser, the second electronic expansion valve is located at the inlet of the evaporator, and the third electronic expansion valve is located at one end of the battery cooler connected to the second outlet of the gas-liquid separator.

3. The thermal management system according to claim 2, characterized in that: The water circuit also includes a battery pack assembly, a motor assembly and a water heater, the electronic water pump includes a first electronic water pump, a second electronic water pump and a third electronic water pump, the multi-way valve includes a first five-way valve, a second five-way valve and a first three-way regulating valve; the first end of the first five-way valve is connected to the third end of the second five-way valve through the water heater, the outlet of the radiator water tank is connected to the second end of the first five-way valve through the motor assembly, the first electronic water pump and the outlet of the warm air core are connected to the waterway side inlet of the water-cooled condenser through the second electronic water pump, and the water-cooled condenser The water channel side outlet of the device is communicated with the first end of the first three-way regulating valve, the second end of the first three-way regulating valve is communicated with the inlet of the heater core, the third end of the first three-way regulating valve is communicated with the first end of the second five-way valve, the second end of the second five-way valve is communicated with the inlet of the battery pack assembly through the third electronic expansion valve, the outlet of the battery pack assembly is communicated with the fifth end of the first five-way valve, the fourth end of the first five-way valve is communicated with the second end of the second five-way valve, the fourth end of the second five-way valve is communicated with the outlet of the radiator water tank, and the fifth end of the second five-way valve is communicated with the inlet of the radiator water tank.

4. The thermal management system according to claim 3, characterized in that: The water circuit further includes a fuel engine assembly and a three-way water valve. The radiator water tank includes a low-temperature radiator water tank and a high-temperature radiator water tank. The temperature of the low-temperature radiator water tank is lower than that of the high-temperature radiator water tank. The multi-way valve further includes a second three-way regulating valve. The electronic water pump further includes a fourth electronic water pump. The outlet of the low-temperature radiator water tank is communicated with the motor assembly, the inlet of the low-temperature radiator water tank is communicated with the fifth end of the second five-way valve, the outlet of the high-temperature radiator water tank is communicated with the inlet of the fuel engine assembly, the outlet of the fuel engine assembly is communicated with the first end of the second three-way regulating valve through the fourth electronic water pump, the second end of the second three-way regulating valve is communicated with the inlet of the high-temperature radiator water tank, the third end of the second three-way regulating valve is communicated with the first end of the first three-way regulating valve, the inlet of the fuel engine assembly is communicated with the first end of the three-way water valve, and the second electronic water pump is communicated with the waterway side inlet of the water-cooled condenser through the second end and the third end of the three-way water valve in sequence.

5. The thermal management system according to claim 1, characterized in that: The refrigerant circuit further includes a blower, and the water circuit further includes a fan. The fan is located on one side of the heat dissipation water tank, and the blower is located on one side of the evaporator.

6. The thermal management system according to claim 1, characterized in that: The electronic expansion valve includes a first electronic expansion valve and a second electronic expansion valve, wherein the first electronic expansion valve is located in a pipeline between the liquid reservoir and the evaporative condenser, and the second electronic expansion valve is located at an inlet of the evaporator.

7. The thermal management system according to claim 6, characterized in that: The water circuit also includes: a fuel engine assembly, the electronic water pump includes a first electronic water pump and a second electronic water pump, the multi-way valve includes a three-way regulating valve, and the radiator water tank includes a low-temperature radiator water tank and a high-temperature radiator water tank; the outlet of the fuel engine assembly is connected to the first end of the three-way regulating valve through the second electronic water pump, the second end and the third end of the three-way regulating valve are respectively connected to the inlet of the high-temperature radiator water tank and the inlet of the heater core, the outlet of the high-temperature radiator water tank and the outlet of the heater core are both connected to the inlet of the fuel engine assembly, the outlet of the low-temperature radiator water tank is connected to the waterway side inlet of the water-cooled condenser through the first electronic water pump, and the waterway side outlet of the water-cooled condenser is connected to the inlet of the low-temperature radiator water tank.

8. The thermal management system according to claim 1, characterized in that: The gas-liquid separator is an integrated coaxial tube structure.

9. A vehicle, characterized in that: Comprising a thermal management system as described in any one of claims 1-8.

10. The vehicle according to claim 9, characterized in that The vehicle is a hybrid vehicle, a pure electric vehicle, or a fuel vehicle.

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