Vehicle thermal management system and vehicle

Abstract

The utility model discloses a vehicle heat management system and a vehicle, an outdoor heat exchanger defrosting loop in the system comprises a first compressor, a first three-way solenoid valve, a second three-way solenoid valve, an outdoor heat exchanger and a second compressor which are sequentially connected in series, and after the outdoor heat exchanger is frosted, the first compressor compresses refrigerant in the outdoor heat exchanger; the refrigerant sequentially flows through the first three-way electromagnetic valve, the second three-way electromagnetic valve, an inner side heat exchanger of the outdoor heat exchanger and the second compressor, so that when the outdoor heat exchanger needs to be defrosted, the high-temperature and high-pressure refrigerant generated through compression of the first compressor is used for defrosting the outdoor heat exchanger, and the cooled refrigerant can flow into the second compressor to be secondarily compressed; the two-stage compression heat pump can be used at a lower environment temperature by increasing the refrigerant compression energy and increasing the enthalpy difference of the air conditioner, so that the comfort of the temperature of a passenger compartment can be ensured while rapid defrosting of the vehicle is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and more specifically, to a vehicle thermal management system and a vehicle. Background Art

[0002] In a heat pump system, an outdoor heat exchanger is used for refrigerant evaporation. When the outdoor heat exchanger operates in a low-temperature environment, due to the low evaporation temperature, the temperatures of the fins and coils on the surface of the outdoor heat exchanger will also decrease accordingly, resulting in frosting of the outdoor heat exchanger. After the outdoor heat exchanger is frosted, if the vehicle still needs to be heated, it will not be possible to defrost the outdoor heat exchanger by heating it through the air-conditioning refrigeration cycle. If the hybrid connection mode of the heat pump (i.e., the heat pump generates heat and refrigerates at the same time) is turned on, it will cause temperature fluctuations or a temperature drop inside the vehicle, affecting the comfort of the passengers inside the vehicle. Therefore, it is only possible to ensure that the outdoor heat exchanger does not frost up faster by maintaining the compressor speed.

[0003] Therefore, how to provide a vehicle thermal management system has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0004] In view of this, the utility model discloses a vehicle thermal management system and a vehicle, which can realize rapid defrosting of the vehicle while ensuring the comfort of the temperature in the passenger compartment.

[0005] A vehicle thermal management system includes: an outdoor heat exchanger defrosting circuit;

[0006] The outdoor heat exchanger defrosting circuit includes: a first compressor, a first three-way solenoid valve, a second three-way solenoid valve, an outdoor heat exchanger, and a second compressor connected in series in sequence;

[0007] The refrigerant in the first compressor flows through the first valve port and the third valve port of the first three-way solenoid valve, the first valve port and the second valve port of the second three-way solenoid valve, the inner heat exchanger of the outdoor heat exchanger, and the second compressor in sequence, so as to use the high-temperature and high-pressure refrigerant generated by the compression of the first compressor to defrost the outdoor heat exchanger when the outdoor heat exchanger needs to be defrosted.

[0008] Optionally, the outdoor heat exchanger includes:

[0009] The inner heat exchanger, which is provided with a first outdoor heat exchanger inlet and a first outdoor heat exchanger outlet;

[0010] An outer heat exchanger, which is provided with a second outdoor heat exchanger inlet and a second outdoor heat exchanger outlet.

[0011] Optionally, the second valve port of the second three-way solenoid valve is connected to the first outdoor heat exchanger inlet, and the first outdoor heat exchanger outlet is connected to the inlet of the second compressor.

[0012] Optionally, the outdoor heat exchanger defrosting circuit includes: a water-cooled condenser;

[0013] The outlet of the second compressor is connected to the inlet of the water-cooled condenser, and the outlet of the water-cooled condenser is connected to the inlet of the second outdoor heat exchanger;

[0014] The outlet of the second outdoor heat exchanger is connected to the inlet of the first compressor.

[0015] Optionally, the outdoor heat exchanger defrosting circuit includes:

[0016] A first one-way valve, a first three-way joint, a first electronic expansion valve, a temperature sensor, a second three-way joint, a first stop valve, a gas-liquid separation tank, and a first pressure sensor;

[0017] The first one-way valve, the first three-way joint, the water-cooled condenser, the first electronic expansion valve, the outer heat exchanger, the temperature sensor, the second three-way joint, the first stop valve, the gas-liquid separation tank, and the first pressure sensor are connected in series in sequence.

[0018] Optionally, the water-cooled condenser is provided with a first liquid inlet of the water-cooled condenser, a first liquid outlet of the water-cooled condenser, a second liquid inlet of the water-cooled condenser, and a second liquid outlet of the water-cooled condenser;

[0019] The first liquid inlet of the water-cooled condenser is connected to the outlet of the second compressor, and the first liquid outlet of the water-cooled condenser is connected to the inlet of the second outdoor heat exchanger.

[0020] Optionally, it further includes: an occupant compartment heating circuit;

[0021] The occupant compartment heating circuit is provided with a PTC heater and a heater core, and the PTC heater is connected in series with the heater core;

[0022] The second liquid inlet of the water-cooled condenser is connected to the outlet of the heater core, and the second liquid outlet of the water-cooled condenser is connected to the inlet of the PTC heater.

[0023] Optionally, the occupant compartment heating circuit includes:

[0024] A warm water pump, a first overflow tank, a third three-way joint, the water-cooled condenser, and a third three-way solenoid valve;

[0025] The warm water pump, the PTC heater, the heater core, the first overflow tank, the third three-way joint, the water-cooled condenser, and the third three-way solenoid valve are connected in series in sequence.

[0026] Optionally, the outdoor heat exchanger defrosting circuit includes: a second pressure sensor;

[0027] The first compressor is connected to the first valve port of the first three-way solenoid valve through the second pressure sensor.

[0028] A vehicle includes the vehicle thermal management system described above.

[0029] As can be seen from the above technical solutions, the present utility model discloses a vehicle thermal management system and a vehicle. The defrosting circuit of the outdoor heat exchanger in the system includes: a first compressor, a first three-way solenoid valve, a second three-way solenoid valve, an outdoor heat exchanger, and a second compressor connected in series in sequence. When the outdoor heat exchanger is frosted, the refrigerant in the first compressor is compressed and flows through the first three-way solenoid valve, the second three-way solenoid valve, the inner heat exchanger of the outdoor heat exchanger, and the second compressor in sequence, so as to use the high-temperature and high-pressure refrigerant generated by the compression of the first compressor to defrost the outdoor heat exchanger when the outdoor heat exchanger needs defrosting. The cooled refrigerant can flow into the second compressor for secondary compression to increase the refrigerant compression energy and the air-conditioning enthalpy difference, so that the two-stage compression heat pump can be used at a lower ambient temperature. While realizing rapid defrosting of the vehicle, the comfort of the temperature in the passenger compartment can also be ensured. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the disclosed drawings without creative efforts.

[0031] Figure 1 It is a schematic diagram of a vehicle thermal management system disclosed in an embodiment of the present utility model;

[0032] Figure 2 It is a schematic structural diagram of an outdoor heat exchanger disclosed in an embodiment of the present utility model;

[0033] Figure 3 It is a schematic diagram of another vehicle thermal management system disclosed in an embodiment of the present utility model. Detailed Embodiments

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0035] An embodiment of the present utility model discloses a vehicle thermal management system and a vehicle. The defrosting circuit of the outdoor heat exchanger in the system includes: a first compressor, a first three-way solenoid valve, a second three-way solenoid valve, an outdoor heat exchanger, and a second compressor connected in series in sequence. When the outdoor heat exchanger is frosted, the refrigerant in the first compressor is compressed and flows through the first three-way solenoid valve, the second three-way solenoid valve, the inner heat exchanger of the outdoor heat exchanger, and the second compressor in sequence, so as to use the high-temperature and high-pressure refrigerant generated by the compression of the first compressor to defrost the outdoor heat exchanger when the outdoor heat exchanger needs defrosting. The cooled refrigerant can flow into the second compressor for secondary compression, so as to increase the refrigerant compression energy and the air-conditioning enthalpy difference, enabling the two-stage compression heat pump to be used at a lower ambient temperature. While realizing rapid defrosting of the vehicle, it can also ensure the comfort of the temperature in the passenger compartment.

[0036] See Figure 1 , a schematic diagram of a vehicle thermal management system disclosed in an embodiment of the present utility model. The vehicle thermal management system includes: a defrosting circuit of an outdoor heat exchanger.

[0037] Among them, the defrosting circuit of the outdoor heat exchanger includes: a first compressor 11, a first three-way solenoid valve 12, a second three-way solenoid valve 13, an outdoor heat exchanger 14, and a second compressor 15 connected in series in sequence.

[0038] The refrigerant in the first compressor 11 is compressed and flows through the first valve port 1 and the third valve port 3 of the first three-way solenoid valve 12, the first valve port 1 and the second valve port 2 of the second three-way solenoid valve 13, the inner heat exchanger (CORE) of the outdoor heat exchanger 14, and the second compressor 15 in sequence, so as to use the high-temperature and high-pressure refrigerant generated by the compression of the first compressor 11 to defrost the outdoor heat exchanger 14 when the outdoor heat exchanger 14 needs defrosting. The cooled refrigerant can flow into the second compressor 15 for secondary compression.

[0039] Among them, during the defrosting process of the outdoor heat exchanger, if only the first compressor 11 is controlled, the vehicle thermal management system realizes single-stage compressor control; if both the first compressor 11 and the second compressor 15 are controlled, the vehicle thermal management system realizes two-stage compressor control.

[0040] When the vehicle is driving in the severe cold season and the heat pump operates at a relatively low ambient temperature, the heat pump absorbs the ambient temperature to heat the passenger compartment. At this time, if the controller detects that the outdoor heat exchanger 14 is frosting, the controller controls the two-stage compressor to start. The two-stage compressor includes: the first compressor 11 and the second compressor 15. The refrigerant is heated and pressurized by the first compressor 11 to obtain a high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant enters the inner heat exchanger of the outdoor heat exchanger 14 through the first valve port 1 and the third valve port 3 of the first three-way solenoid valve 12, and the first valve port 1 and the second valve port 2 of the second three-way solenoid valve 13 for cooling. A large amount of heat is released by the high-temperature and high-pressure refrigerant during the cooling process to defrost the outdoor heat exchanger 14. The cooled refrigerant can be secondarily compressed in the second compressor 15 to increase the refrigerant compression energy and the air-conditioning enthalpy difference, so that the two-stage compression heat pump can be used at a lower ambient temperature. While achieving rapid defrosting of the vehicle, it can also ensure the comfort of the temperature in the passenger compartment.

[0041] In summary, the present application discloses a vehicle thermal management system. The defrosting circuit of the outdoor heat exchanger in this system includes: the first compressor 11, the first three-way solenoid valve 12, the second three-way solenoid valve 13, the outdoor heat exchanger 14, and the second compressor 15 connected in series in sequence. After the outdoor heat exchanger 14 is frosted, the refrigerant in the first compressor 11 is compressed and flows through the first three-way solenoid valve 12, the second three-way solenoid valve 13, the inner heat exchanger of the outdoor heat exchanger 14, and the second compressor 15 in sequence, so as to use the high-temperature and high-pressure refrigerant generated by the compression of the first compressor 11 to defrost the outdoor heat exchanger 14 when the outdoor heat exchanger 14 needs defrosting. The cooled refrigerant can flow into the second compressor 15 for secondary compression to increase the refrigerant compression energy and the air-conditioning enthalpy difference, so that the two-stage compression heat pump can be used at a lower ambient temperature. While achieving rapid defrosting of the vehicle, it can also ensure the comfort of the temperature in the passenger compartment.

[0042] For ease of understanding the defrosting process of the outdoor heat exchanger 14, refer to Figure 2 , a structural schematic diagram of an outdoor heat exchanger disclosed in an embodiment of the present utility model. The outdoor heat exchanger 14 includes: CORE and COND.

[0043] Among them, CORE represents the inner heat exchanger of the outdoor heat exchanger 14, and CORE is provided with a first outdoor heat exchanger inlet and a first outdoor heat exchanger outlet.

[0044] COND represents the outer heat exchanger of the outdoor heat exchanger 14, and COND is provided with a second outdoor heat exchanger inlet and a second outdoor heat exchanger outlet.

[0045] Specifically, when defrosting the outdoor heat exchanger 14, the high-temperature and high-pressure refrigerant generated by the first compressor 11 enters the CORE of the outdoor heat exchanger 14 for cooling. During the cooling process, the high-temperature and high-pressure refrigerant releases a large amount of heat to the COND of the outdoor heat exchanger 14. The frost on the COND of the outdoor heat exchanger 14 absorbs the heat released by the CORE of the outdoor heat exchanger 14 for defrosting. The refrigerant cooled inside the CORE of the outdoor heat exchanger 14 flows into the second compressor 15, is secondarily compressed, and then flows back into the first compressor 11.

[0046] Combined with Figure 1 and Figure 2 , the second valve port 2 of the second three-way solenoid valve 13 is connected to the first outdoor heat exchanger inlet provided on the CORE of the outdoor heat exchanger 14, and the first outdoor heat exchanger outlet provided on the CORE is connected to the inlet of the second compressor 15.

[0047] The high-temperature and high-pressure refrigerant compressed by the first compressor 11 sequentially flows through the first valve port 1 and the third valve port 3 of the first three-way solenoid valve 12, and the first valve port 1 and the second valve port 2 of the second three-way solenoid valve 13 and enters the CORE of the outdoor heat exchanger 14 for cooling. The large amount of heat released during the cooling process of the high-temperature and high-pressure refrigerant defrosts the COND of the outdoor heat exchanger 14. The refrigerant cooled inside the CORE of the outdoor heat exchanger 14 flows into the second compressor 15 and is secondarily compressed to increase the refrigerant compression energy and the air-conditioning enthalpy difference, enabling the two-stage compression heat pump to be used at a lower ambient temperature. While achieving rapid defrosting of the vehicle, it can also ensure the comfort of the occupant compartment temperature.

[0048] See Figure 1 , the outdoor heat exchanger defrosting circuit includes: a water-cooled condenser 16.

[0049] The outlet of the second compressor 15 is connected to the inlet of the water-cooled condenser 16, and the outlet of the water-cooled condenser 16 is connected to the second outdoor heat exchanger inlet provided on the COND of the outdoor heat exchanger 14.

[0050] The second outdoor heat exchanger outlet provided on the COND of the outdoor heat exchanger 14 is connected to the inlet of the first compressor 11.

[0051] Specifically, the refrigerant cooled inside the CORE of the outdoor heat exchanger 14 flows into the second compressor 15 and is secondarily compressed to increase the refrigerant compression energy and the air-conditioning enthalpy difference. The refrigerant secondarily compressed by the second compressor 15 flows through the water-cooled condenser 16 and the COND of the outdoor heat exchanger 14 and then returns to the first compressor 11 again.

[0052] In one embodiment, the water-cooled condenser 16 is provided with a first liquid inlet and a first liquid outlet of the water-cooled condenser, a second liquid inlet and a second liquid outlet of the water-cooled condenser;

[0053] The first liquid inlet of the water-cooled condenser is connected to the outlet of the second compressor 15, and the first liquid outlet of the water-cooled condenser is connected to the second outdoor heat exchanger inlet provided in the COND of the outdoor heat exchanger 14.

[0054] In one embodiment, referring to Figure 1 , the defrosting circuit of the outdoor heat exchanger may further include:

[0055] A first one-way valve 17, a first three-way joint 18, a first pressure sensor 19, a first electronic expansion valve 20, a temperature sensor 21, a second three-way joint 22, a first stop valve 23 and a gas-liquid separation tank 24.

[0056] The first one-way valve 17, the first three-way joint 18, the water-cooled condenser 16, the first electronic expansion valve 20, the COND of the outdoor heat exchanger 14, the temperature sensor 21, the second three-way joint 22, the first stop valve 23, the gas-liquid separation tank 24 and the first pressure sensor 19 are connected in series in sequence.

[0057] Specifically, the refrigerant to be cooled flows into the second compressor 15 and is secondarily compressed, and then flows through the first one-way valve 17, the first three-way joint 18, the water-cooled condenser 16, the first electronic expansion valve 20, the COND of the outdoor heat exchanger 14, the temperature sensor 21, the second three-way joint 22, the first stop valve 23, the gas-liquid separation tank 24 and the first pressure sensor 19, and then flows into the first compressor 11.

[0058] In one embodiment, referring to Figure 1 , the defrosting circuit of the outdoor heat exchanger may further include: a second pressure sensor 25.

[0059] The first compressor 11 is connected to the first valve port of the first three-way solenoid valve 12 through the second pressure sensor 25.

[0060] Referring to Figure 3 , a schematic diagram of another vehicle thermal management system disclosed in the embodiment of the present invention, the vehicle thermal management system further includes: an occupant compartment heating circuit.

[0061] The occupant compartment heating circuit is provided with a PTC (Positive Temperature Coefficient) heater 28 and a heater core 29, and the PTC heater 28 is connected in series with the heater core 29.

[0062] The second liquid inlet of the water-cooled condenser is connected to the outlet of the warm air core 29 , and the second liquid outlet of the water-cooled condenser is connected to the inlet of the PTC heater 28 .

[0063] The first heating scheme is that when the passage between the water-cooled condenser 16 and the PTC heater 28 in the passenger compartment heating circuit is connected, the passenger compartment heating circuit can use the high-temperature coolant flowing out of the water-cooled condenser 16 to supply the heater core 29 to achieve passenger compartment heating. When the heat provided by the water-cooled condenser 16 is insufficient to meet the heating demand of the passenger compartment, the PTC heater 28 is started, and the PTC heater 28 and the water-cooled condenser 16 are used to heat the coolant together to meet the heating demand of the passenger compartment.

[0064] The second heating scheme is that when the passage between the water-cooled condenser 16 and the PTC heater 28 in the passenger compartment heating circuit is connected and the PTC heater 28 is not working, the water-cooled condenser 16 condenses the high-temperature and high-pressure refrigerant vapor discharged from the second compressor 15 into liquid and releases heat, which is transferred to the heater core 29 through the circulation system, and then the heater core 29 transfers the heat to the air inside the vehicle to achieve heating of the passenger compartment.

[0065] The third heating scheme is that when the passage between the water-cooled condenser 16 and the PTC heater 28 in the passenger compartment heating circuit is not conducted, the PTC heater 28 heats the coolant output by the heater water pump (the heater water pump is arranged between the PTC heater 28 and the water-cooled condenser 16) to generate heat, and the heat is transferred to the heater core 29 through the circulation system, and then the heater core 29 transfers the heat to the air inside the vehicle, thereby heating the passenger compartment.

[0066] When the outdoor heat exchanger 14 is defrosted, there is no need for high-temperature refrigerant to flow through the CORE of the outdoor heat exchanger 14, and the following circuits are connected:

[0067] 1. When the heating demand for the passenger compartment is large, the circuit is: first compressor 11 → first valve port 1 and third valve port 3 of the first three-way valve 12 → first valve port 1 and third valve port 3 of the second three-way valve 13 → second compressor 15 → first check valve 17 → first three-way valve 18 → water-cooled condenser 16 → first electronic expansion valve 20 → COND of outdoor heat exchanger 14 → temperature sensor 21 → second three-way valve 22 → first stop valve 23 → gas-liquid separation tank 24 → first compressor 11.

[0068] 2. When the heating demand for the passenger compartment is small, the circuit is: first compressor 11 → first valve port 1 and second valve port 2 of first three-way valve 12 → first three-way valve 18 → water-cooled condenser 16 → first electronic expansion valve 20 → COND of outdoor heat exchanger 14 → temperature sensor 21 → second three-way valve 22 → first stop valve 23 → gas-liquid separation tank 24 → first compressor 11.

[0069] In summary, when heating the passenger compartment is required, in the case of a relatively high ambient temperature, the heating demand of the passenger compartment is correspondingly small, and a single-stage compressor is used in this application to heat the passenger compartment, so as to meet the heating demand of the passenger compartment while saving energy; in the case of a relatively low ambient temperature, the heating demand of the passenger compartment increases correspondingly, and a two-stage compressor is used in this application to heat the passenger compartment, so as to meet the heating demand of the passenger compartment.

[0070] In one embodiment, the heating circuit of the passenger compartment includes:

[0071] a heater water pump 30, a first overflow tank 31, a third three-way valve 32, a water-cooled condenser 16, and a third three-way solenoid valve 33.

[0072] The heater water pump 30, a PTC heater 28, the heater core 29, the first overflow tank 31, the third three-way valve 32, the water-cooled condenser 16, and the third three-way solenoid valve 33 are connected in series in sequence.

[0073] Among them, a first valve port 1 of the third three-way solenoid valve 33 is connected to a second liquid outlet of the water-cooled condenser 16, a second valve port 2 of the third three-way solenoid valve 33 is connected to the third three-way valve 32, and a third valve port 3 of the third three-way solenoid valve 33 is connected to the heater water pump 30.

[0074] (1) When the third valve port 3 of the third three-way solenoid valve 33 is in communication with the first valve port 1, the second valve port 2 is closed, so that the passage between the water-cooled condenser 16 and the PTC heater 28 is in communication.

[0075] Correspondingly, the coolant output by the water-cooled condenser 16 and the coolant in the heater water pump 30 flow through the PTC heater 28, the heater core 29, the first overflow tank 31, the third three-way valve 32, the water-cooled condenser 16, the first valve port 1 and the third valve port 3 of the third three-way solenoid valve 33, and then flow back to the heater water pump 30.

[0076] (2) When the third valve port 3 of the third three-way solenoid valve 33 is in communication with the second valve port 2, the first valve port 1 is closed, so that the passage between the water-cooled condenser 16 and the PTC heater 28 is not in communication.

[0077] Correspondingly, the coolant in the heater water pump 30 flows through the PTC heater 28, the heater core 29, the first overflow tank 31, the third three-way valve 32, and the first valve port 2 and the third valve port 3 of the third three-way solenoid valve 33 in sequence, and then flows back to the heater water pump 30.

[0078] Corresponding to the above embodiments, the present application further provides a vehicle, which includes the vehicle thermal management system in the above embodiments. For the working principle of the vehicle thermal management system, please refer to the corresponding part of the above embodiments and will not be elaborated herein.

[0079] Finally, it should also be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0080] The various embodiments in this specification are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0081] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle thermal management system, characterized in that: include: Outdoor heat exchanger defrost circuit; The outdoor heat exchanger defrosting circuit comprises: a first compressor, a first three-way solenoid valve, a second three-way solenoid valve, an outdoor heat exchanger and a second compressor connected in series in sequence; The refrigerant in the first compressor flows in sequence through the first valve port and the third valve port of the first three-way solenoid valve, the first valve port and the second valve port of the second three-way solenoid valve, the inner heat exchanger of the outdoor heat exchanger and the second compressor, so as to defrost the outdoor heat exchanger by utilizing the high-temperature and high-pressure refrigerant compressed by the first compressor when the outdoor heat exchanger needs to be defrosted.

2. The vehicle thermal management system according to claim 1, characterized in that: The outdoor heat exchanger comprises: The inner heat exchanger is provided with a first outdoor heat exchanger inlet and a first outdoor heat exchanger outlet; The outside heat exchanger is provided with a second outdoor heat exchanger inlet and a second outdoor heat exchanger outlet.

3. The vehicle thermal management system according to claim 2, characterized in that: The second valve port of the second three-way solenoid valve is connected to the inlet of the first outdoor heat exchanger, and the outlet of the first outdoor heat exchanger is connected to the inlet of the second compressor.

4. The vehicle thermal management system according to claim 3, characterized in that: The outdoor heat exchanger defrosting circuit comprises: a water-cooled condenser; The outlet of the second compressor is connected to the inlet of the water-cooled condenser, and the outlet of the water-cooled condenser is connected to the inlet of the second outdoor heat exchanger; The outlet of the second outdoor heat exchanger is connected to the inlet of the first compressor.

5. The vehicle thermal management system according to claim 4, characterized in that: The outdoor heat exchanger defrosting circuit comprises: A first one-way valve, a first three-way connection, a first electronic expansion valve, a temperature sensor, a second three-way connection, a first stop valve, a gas-liquid separation tank and a first pressure sensor; The first one-way valve, the first three-way valve, the water-cooled condenser, the first electronic expansion valve, the outer heat exchanger, the temperature sensor, the second three-way valve, the first stop valve, the gas-liquid separation tank and the first pressure sensor are connected in series in sequence.

6. The vehicle thermal management system according to claim 4, characterized in that: The water-cooled condenser is provided with a first liquid inlet and a first liquid outlet of the water-cooled condenser, a second liquid inlet and a second liquid outlet of the water-cooled condenser; The first liquid inlet of the water-cooled condenser is connected to the outlet of the second compressor, and the first liquid outlet of the water-cooled condenser is connected to the inlet of the second outdoor heat exchanger.

7. The vehicle thermal management system according to claim 6, characterized in that: Also includes: Heating circuit for the passenger compartment; The passenger compartment heating circuit is provided with a PTC heater and a heater core, and the PTC heater is connected in series with the heater core; The second liquid inlet of the water-cooled condenser is connected to the outlet of the warm air core, and the second liquid outlet of the water-cooled condenser is connected to the inlet of the PTC heater.

8. The vehicle thermal management system according to claim 7, characterized in that: The passenger compartment heating circuit comprises: A warm air water pump, a first overflow tank, a third three-way valve, the water-cooled condenser and a third three-way solenoid valve; The warm air water pump, the PTC heater, the warm air core, the first overflow tank, the third three-way valve, the water-cooled condenser and the third three-way solenoid valve are connected in series in sequence.

9. The vehicle thermal management system according to claim 1, characterized in that: The outdoor heat exchanger defrosting circuit includes: a second pressure sensor; The first compressor is connected to the first valve port of the first three-way solenoid valve through the second pressure sensor.

10. A vehicle, characterized in that: A vehicle thermal management system comprising the vehicle thermal management system according to any one of claims 1 to 9.

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