Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle, and belongs to the technical field of vehicles. According to the thermal management system and the vehicle, the first valve can enable the first evaporator, the battery heater, the second evaporator and the vehicle cabin heater to form a series connection structure, so that a battery can be cooled through the first evaporator and the second evaporator together, and the battery can be heated through the battery heater and the vehicle cabin heater together; the requirement for rapid heating or cooling of the battery can be met, then the vehicle driving experience feeling is improved, and low energy consumption of the whole vehicle can be kept.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a thermal management system and a vehicle. Background Art

[0002] New energy vehicles usually have a thermal management system, and the goal of the whole vehicle thermal management is to make the cab, battery, motor and controller in the best working temperature range and the energy consumption of the whole vehicle is the lowest.

[0003] In the existing new energy vehicles, the working efficiency of the thermal management system is low, and it is difficult to meet the requirements of rapid heating and cooling of the battery, resulting in poor driving experience of new energy vehicles in extremely cold and high temperature environments. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a thermal management system and a vehicle, which can quickly heat or cool the battery on the premise of ensuring low energy consumption of the whole vehicle.

[0005] To achieve the above purpose, the following technical solutions are provided:

[0006] On the one hand, a thermal management system is provided, including:

[0007] A battery thermal management unit, including a first evaporator and a battery heater, the first channel of the first evaporator, the battery heater and the battery are connected in series in turn to form a battery heat exchange circulation loop;

[0008] A warm air unit, including a second evaporator, a warm air core and a cabin heater, the first channel of the second evaporator, the warm air core and the cabin heater are connected in series in turn to form a warm air branch, and the warm air branch is connected in parallel with the battery heat exchange circulation loop between the first evaporator and the battery;

[0009] A first valve, which is used to connect the first channel of the first evaporator with the battery and / or the warm air branch.

[0010] As an optional scheme of the thermal management system, the thermal management system further includes a heat pump unit, and the heat pump unit includes a first compressor, a heat pump core and a first expansion valve, and the second channel of the second evaporator, the first compressor, the heat pump core and the first expansion valve are connected in series in turn to form a first heat pump circulation loop.

[0011] As an optional scheme of the thermal management system, the thermal management system further includes a motor heat exchange circulation loop, and the motor heat exchange circulation loop is used for cooling the motor;

[0012] The thermal management system further includes a first waste heat recovery branch, both ends of the first waste heat recovery branch are communicated with the battery heat exchange circulation loop, and the first channel of the second evaporator is connected in series to the first waste heat recovery branch.

[0013] As an optional solution of the thermal management system, the thermal management system further includes a motor heat exchange circulation loop for cooling the motor;

[0014] The first channel of the second evaporator, the first channel of the first evaporator, the battery heater, and the battery are connected in series in sequence to form a second waste heat recovery branch, and both ends of the second waste heat recovery branch are communicated with the battery heat exchange circulation loop.

[0015] As an optional solution of the thermal management system, the thermal management system further includes a heat pump unit. The heat pump unit includes an outdoor heat exchanger, a first compressor, a heat pump core body, and a second expansion valve. The outdoor heat exchanger, the first compressor, the heat pump core body, and the second expansion valve are connected in series in sequence to form a second heat pump circulation loop.

[0016] As an optional solution of the thermal management system, the thermal management system further includes a cooling branch. The cooling branch is connected in series to the battery heat exchange circulation loop between the first evaporator and the battery, and the first channel of the second evaporator is connected in series to the cooling branch;

[0017] The thermal management system further includes a heat pump unit. The heat pump unit includes a first compressor, a heat pump core body, an outdoor heat exchanger, and a first expansion valve. The second channel of the second evaporator, the first compressor, the heat pump core body, the outdoor heat exchanger, and the first expansion valve are connected in series in sequence to form a third heat pump circulation loop.

[0018] As an optional solution of the thermal management system, the thermal management system further includes a heat pump unit. The heat pump unit includes a heat pump evaporator, a first compressor, a heat pump core body, an outdoor heat exchanger, and a third expansion valve. The heat pump evaporator, the first compressor, the heat pump core body, the outdoor heat exchanger, and the third expansion valve are connected in series in sequence to form a fourth heat pump circulation loop.

[0019] As an optional solution of the thermal management system, the heat pump evaporator is connected in parallel with the second channel of the second evaporator;

[0020] The thermal management system further includes a cooling branch. The cooling branch is connected in series to the battery heat exchange circulation loop between the first evaporator and the battery, and the first channel of the second evaporator is connected in series to the cooling branch.

[0021] As an alternative solution for the thermal management system, the heat pump unit further includes a second compressor, a battery condenser, and a third expansion valve. The second channel of the first evaporator, the second compressor, the battery condenser, and the third expansion valve are connected in series in sequence to form a battery heat pump circulation loop.

[0022] On the other hand, a vehicle is provided, which includes the thermal management system as described in any one of the above.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] For the thermal management system and the vehicle of the present utility model, the first valve can enable the first evaporator, the battery heater, the second evaporator, and the cabin heater to form a series structure. Furthermore, the battery can be cooled jointly by the first evaporator and the second evaporator, and the battery can be heated jointly by the battery heater and the cabin heater. This can not only meet the requirements for rapid heating or cooling of the battery, thereby improving the driving experience of the vehicle, but also keep the whole vehicle with low energy consumption. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the first state of the thermal management system in an embodiment of the present utility model;

[0026] Figure 2 It is a schematic diagram of the second state of the thermal management system in an embodiment of the present utility model;

[0027] Figure 3 It is a schematic diagram of the third state of the thermal management system in an embodiment of the present utility model;

[0028] Figure 4 It is a schematic diagram of the fourth state of the thermal management system in an embodiment of the present utility model;

[0029] Figure 5 It is a schematic diagram of the fifth state of the thermal management system in an embodiment of the present utility model;

[0030] Figure 6 It is a schematic diagram of the sixth state of the thermal management system in an embodiment of the present utility model;

[0031] Figure 7 It is a schematic diagram of the seventh state of the thermal management system in an embodiment of the present utility model;

[0032] Figure 8 It is a schematic diagram of the eighth state of the thermal management system in an embodiment of the present utility model;

[0033] Figure 9 It is a schematic diagram of the ninth state of the thermal management system in an embodiment of the present utility model.

[0034] Reference Signs:

[0035] 100. Battery

[0036] 11. First evaporator; 12. Battery heater; 13. First water pump

[0037] 21. Second evaporator; 22. Heater core; 23. Cabin heater; 24. Second water pump

[0038] 3. First valve

[0039] 41. First compressor; 42. Heat pump core; 43. Outdoor heat exchanger; 44. Heat pump evaporator; 45. First fan

[0040] 51. Motor; 52. Radiator

[0041] 61. Second compressor; 62. Battery condenser; 63. Third expansion valve; 64. Second fan

[0042] 7. Valve block Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0044] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0045] It should be noted that: Similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0046] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0047] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged" 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 a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0048] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0049] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0050] Such as Figures 1-9As shown in the figure, this embodiment provides a thermal management system, including a battery thermal management unit, a warm air unit, and a first valve 3. The battery thermal management unit includes a first evaporator 11 and a battery heater 12. The first channel of the first evaporator 11, the battery heater 12, and the battery 100 are connected in series in sequence to form a battery heat exchange circulation loop. The warm air unit includes a second evaporator 21, a warm air core 22, and a cabin heater 23. The warm air core 22 is used to heat the cabin. The first channel of the second evaporator 21, the warm air core 22, and the cabin heater 23 are connected in series in sequence to form a warm air branch. The warm air branch is connected in parallel with the battery heat exchange circulation loop between the first evaporator 11 and the battery 100. The first valve 3 is used to connect the first channel of the first evaporator 11 with the battery 100 and / or the warm air branch. In other words, the first valve 3 can make the first evaporator 11, the battery heater 12, the second evaporator 21, and the cabin heater 23 form a series structure. Furthermore, the battery 100 can be cooled jointly by the first evaporator 11 and the second evaporator 21, and the battery 100 can be heated jointly by the battery heater 12 and the cabin heater 23. In this embodiment, the first valve 3 is a proportional three-way valve.

[0051] When the cabin needs heating, the cabin heater 23 heats the coolant in the warm air branch, and the warm air core 22 provides heating for the cabin.

[0052] When both the cabin and the battery 100 need heating, as Figure 1 shown, the cabin heater 23 heats the coolant in the warm air branch, and the warm air core 22 provides heating for the cabin. Then, the coolant in the warm air branch enters the battery heat exchange circulation loop, and the battery heater 12 heats the coolant in the battery heat exchange circulation loop. This is equivalent to connecting the cabin heater 23 and the battery heater 12 in series to jointly heat the battery 100 by the cabin heater 23 and the battery heater 12, and the flow rate of the proportional three-way valve and the battery heat exchange circulation loop can be adjusted to make the coolant in the battery heat exchange circulation loop reach an appropriate temperature to meet the requirement of the rapid temperature rise of the battery 100.

[0053] When the battery 100 needs to be cooled, the second evaporator 21 can cool the coolant in the warm air branch. Then, the coolant in the warm air branch enters the first channel of the first evaporator 11, and the first evaporator 11 further cools the coolant in the battery heat exchange circulation loop. This is equivalent to connecting the first evaporator 11 and the second evaporator 21 in series to jointly cool the battery 100 by the first evaporator 11 and the second evaporator 21, and the flow rate of the proportional three-way valve and the battery heat exchange circulation loop can be adjusted to make the coolant in the battery heat exchange circulation loop reach an appropriate temperature to meet the requirement of the rapid cooling of the battery 100.

[0054] With such a setting, not only can the vehicle performance be improved, thereby enhancing the vehicle driving experience, but also the whole vehicle can maintain low energy consumption.

[0055] It should be noted that the thermal management system further includes a first water pump 13, which is connected in series in the battery heat exchange circulation loop to provide power for the coolant circulation in the battery heat exchange circulation loop. The thermal management system further includes a second water pump 24, which is connected in series with the first channel of the second evaporator 21 to provide power for the coolant circulation.

[0056] The thermal management system further includes a heat exchange component, which is used for heat exchange with the first evaporator 11 and the second evaporator 21. In this embodiment, the heat exchange component is a heat pump unit.

[0057] In one embodiment, as Figure 2 shown, the heat pump unit includes a first compressor 41, a heat pump core 42 and a first expansion valve. The second channel of the second evaporator 21, the first compressor 41, the heat pump core 42 and the first expansion valve are connected in series in sequence to form a first heat pump circulation loop.

[0058] By heating the coolant in the warm air branch through the cabin heater 23, the coolant can exchange heat with the refrigerant in the second channel of the second evaporator 21 in the first channel of the second evaporator 21, so that the refrigerant absorbs heat and provides heat for the heat pump unit circulation. Then, after being compressed by the first compressor 41, the refrigerant enters the heat pump core 42 and dissipates heat to provide heating for the cabin through the heat pump core 42; after being discharged from the heat pump core 42 and passing through the first expansion valve, the refrigerant enters the second channel of the second evaporator 21 again for circulation.

[0059] The coolant heated by the cabin heater 23 enters the battery heat exchange circulation loop from the warm air branch and is heated by the battery heater 12 to achieve rapid heating of the battery 100.

[0060] In one embodiment, as Figure 3 shown, the heat pump unit further includes an outdoor heat exchanger 43 and a second expansion valve. The outdoor heat exchanger 43, the first compressor 41, the heat pump core 42 and the second expansion valve are connected in series in sequence to form a second heat pump circulation loop.

[0061] The refrigerant in the second heat pump circulation loop absorbs the heat of the air through the outdoor heat exchanger 43 to provide heat for the heat pump unit circulation. Then, after being compressed by the first compressor 41, the refrigerant enters the heat pump core 42 and dissipates heat to provide heating for the cabin through the heat pump core 42; after being discharged from the heat pump core 42 and passing through the second expansion valve, the refrigerant enters the outdoor heat exchanger 43 again for circulation.

[0062] The coolant in the battery heat exchange circulation loop is heated by the battery heater 12 to provide heating for the battery 100. At the same time, the coolant flowing into the warm air branch can also be heated by the cabin heater 23, and then the coolant enters the battery heat exchange circulation loop from the warm air branch to rapidly increase the temperature of the battery 100.

[0063] Furthermore, the heat pump unit further includes a first fan 45 correspondingly arranged with the outdoor heat exchanger 43, which can accelerate the air circulation around the outdoor heat exchanger 43 through the first fan 45 to improve the heat exchange efficiency of the outdoor heat exchanger 43.

[0064] In one embodiment, as Figure 4 shown, the thermal management system further includes a motor heat exchange circulation loop for cooling the motor 51. Exemplarily, a radiator 52 is provided in the motor heat exchange circulation loop, and the coolant in the motor heat exchange circulation loop can exchange heat with air through the radiator 52 to reduce the temperature of the coolant. In this embodiment, there are two motors 51.

[0065] The thermal management system further includes a first waste heat recovery branch, both ends of which are connected to the battery heat exchange circulation loop, and the first channel of the second evaporator 21 is connected in series to the first waste heat recovery branch.

[0066] When the temperature of the coolant in the motor heat exchange circulation loop exceeds the threshold, the high-temperature coolant in the motor heat exchange circulation loop can flow through the first waste heat recovery branch, so that the high-temperature coolant enters the first channel of the second evaporator 21 and exchanges heat with the refrigerant in the second channel of the second evaporator 21. The refrigerant absorbs heat to provide heat for the heat pump unit cycle. Then, the refrigerant is compressed by the first compressor 41 and enters the heat pump core 42 for heat dissipation to provide heating for the cabin through the heat pump core 42; the refrigerant is discharged from the heat pump core 42 and passes through the first expansion valve, and then enters the second channel of the second evaporator 21 again for circulation.

[0067] In other embodiments, as Figure 5 shown, the first channel of the second evaporator 21, the first channel of the first evaporator 11, the battery heater 12, and the battery 100 are connected in series in sequence to form a second waste heat recovery branch, and both ends of the second waste heat recovery branch are connected to the battery heat exchange circulation loop.

[0068] When the temperature of the coolant in the motor heat exchange circulation loop exceeds the threshold value, the high-temperature coolant in the motor heat exchange circulation loop can also flow through the second waste heat recovery branch, so that the high-temperature coolant enters the first channel of the second evaporator 21 and exchanges heat with the refrigerant in the second channel of the second evaporator 21. The refrigerant absorbs heat to provide heat for the heat pump unit cycle. Then, after being compressed by the first compressor 41, the refrigerant enters the heat pump core 42 and dissipates heat to provide heating for the cabin through the heat pump core 42; after the refrigerant is discharged from the heat pump core 42 and passes through the first expansion valve, it enters the second channel of the second evaporator 21 again for circulation.

[0069] The temperature of the coolant decreases after passing through the first channel of the second evaporator 21, and then enters the battery heat exchange circulation loop through the warm air branch to provide heating for the battery 100; if the coolant temperature in the battery heat exchange circulation loop is higher than the required temperature of the battery 100, the coolant flow rate from the first channel of the second evaporator 21 into the first channel of the first evaporator 11 can be adjusted through the proportional three-way valve to meet the heating requirements of the battery 100.

[0070] In one embodiment, if Figure 6 As shown, the thermal management system further includes a cooling branch, which is connected in series in the battery heat exchange circulation loop between the first evaporator 11 and the battery 100, and the first channel of the second evaporator 21 is connected in series to the cooling branch.

[0071] The second channel of the second evaporator 21, the first compressor 41, the heat pump core 42, the outdoor heat exchanger 43 and the first expansion valve are sequentially connected in series to form a third heat pump circulation loop.

[0072] It should be noted that the heat pump core 42 has a stop valve and an expansion valve. By closing the stop valve and the expansion valve, the heat pump core 42 can be connected to the third heat pump circulation loop only as a pipeline. This is the prior art in the field and will not be described here.

[0073] When the battery 100 needs to be cooled and the cabin does not need to be refrigerated, the shut-off valve and expansion valve of the heat pump core 42 are closed; the coolant in the first channel of the second evaporator 21 exchanges heat with the refrigerant in the second channel of the second evaporator 21, so that the refrigerant in the second channel of the second evaporator 21 absorbs heat and the coolant in the first channel of the second evaporator 21 is cooled down, and then the refrigerant is compressed by the first compressor 41, enters the outdoor heat exchanger 43 and dissipates heat, and then passes through the first expansion valve and enters the second channel of the second evaporator 21 again for circulation.

[0074] After the coolant is cooled in the first channel of the second evaporator 21 , it enters the battery heat exchange circulation loop through the first channel of the first evaporator 11 to cool the battery 100 .

[0075] Furthermore, if Figure 7 As shown, the heat pump unit also includes a second compressor 61, a battery condenser 62 and a third expansion valve 63. The second channel of the first evaporator 11, the second compressor 61, the battery condenser 62 and the third expansion valve 63 are connected in series in sequence to form a battery heat pump circulation loop.

[0076] When the cooling demand of the battery 100 is large, that is, the battery 100 needs to be cooled quickly, the second compressor 61 is turned on while the third heat pump circulation loop is working to cool the refrigerant in the second channel of the first evaporator 11 through the battery condenser 62, so that the refrigerant in the second channel of the first evaporator 11 can exchange heat with the coolant in the first channel of the first evaporator 11, and cool the coolant in the battery heat exchange circulation loop, which is equivalent to cooling the coolant in the battery heat exchange circulation loop together through the first evaporator 11 and the second evaporator 21, which can meet the demand for rapid cooling of the battery 100.

[0077] Furthermore, the heat pump unit further includes a second fan 64 disposed corresponding to the battery condenser 62 . The second fan 64 can accelerate the air circulation around the battery condenser 62 to improve the heat dissipation efficiency of the battery condenser 62 .

[0078] In one embodiment, if Figure 8 As shown, the heat pump unit further includes a heat pump evaporator 44 and a third expansion valve 63. The heat pump evaporator 44, the first compressor 41, the heat pump core 42, the outdoor heat exchanger 43 and the third expansion valve 63 are sequentially connected in series to form a fourth heat pump circulation loop.

[0079] When the cabin needs to be cooled, the shut-off valve and expansion valve of the heat pump core 42 are closed; after being compressed by the first compressor 41, the refrigerant enters the outdoor heat exchanger 43 and dissipates heat, and then passes through the third expansion valve 63, enters the heat pump evaporator 44 and exchanges heat with the air in the cabin to achieve cabin cooling.

[0080] In this embodiment, the thermal management system further includes a valve block 7, and the outdoor heat exchanger 43, the heat pump core 42, the heat pump evaporator 44 and the second evaporator 21 are all connected to the valve block 7 to change the flow direction of the coolant through the valve block 7. Further, the first expansion valve, the second expansion valve and the third expansion valve 63 are all integrated in the valve block 7. Of course, the first expansion valve, the second expansion valve and the third expansion valve 63 can also adopt other settings in the prior art, which will not be repeated here.

[0081] Furthermore, if Figure 9 As shown, the heat pump evaporator 44 is connected in parallel with the second channel of the second evaporator 21 , and the cooling branch is connected in series in the battery heat exchange circulation loop between the first evaporator 11 and the battery 100 .

[0082] When the passenger compartment needs to be cooled and the battery 100 needs to be cooled, the fourth heat pump cycle circuit operates to provide cooling for the passenger compartment through the heat pump evaporator 44. Meanwhile, the refrigerant can also enter the second channel of the second evaporator 21 and exchange heat with the coolant in the first channel of the second evaporator 21. After the coolant is cooled down in the first channel of the second evaporator 21, it enters the battery heat exchange cycle circuit through the first channel of the first evaporator 11 to cool the battery 100.

[0083] Furthermore, the second compressor 61 is turned on to cool the refrigerant in the second channel of the first evaporator 11 through the battery condenser 62, so that the refrigerant in the second channel of the first evaporator 11 can exchange heat with the coolant in the first channel of the first evaporator 11, further cooling the coolant in the battery heat exchange cycle circuit. It is equivalent to cooling the battery 100 jointly by the first evaporator 11 and the second evaporator 21, thus meeting the requirement for rapid cooling of the battery 100.

[0084] This embodiment also provides a vehicle including the thermal management system as described above.

[0085] The vehicle of this embodiment has the same beneficial effects as the above thermal management system by applying the above thermal management system, which will not be elaborated here.

[0086] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection 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 only. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and 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 battery thermal management unit comprises a first evaporator (11) and a battery heater (12), wherein a first channel of the first evaporator (11), the battery heater (12) and a battery (100) are sequentially connected in series to form a battery heat exchange circulation loop; A warm air unit, comprising a second evaporator (21), a warm air core (22) and a cabin heater (23), wherein a first channel of the second evaporator (21), the warm air core (22) and the cabin heater (23) are sequentially connected in series to form a warm air branch, and the warm air branch is connected in parallel with the battery heat exchange circulation loop between the first evaporator (11) and the battery (100); A first valve (3), the first valve (3) is used to connect the first channel of the first evaporator (11) with the battery (100) and / or the warm air branch.

2. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a heat pump unit, the heat pump unit comprising a first compressor (41), a heat pump core (42) and a first expansion valve, the second channel of the second evaporator (21), the first compressor (41), the heat pump core (42) and the first expansion valve are sequentially connected in series to form a first heat pump circulation loop.

3. The thermal management system according to claim 2, characterized in that: The thermal management system further comprises a motor heat exchange circulation loop, wherein the motor heat exchange circulation loop is used to cool the motor (51); The thermal management system further comprises a first waste heat recovery branch, both ends of which are connected to the battery heat exchange circulation loop, and the first channel of the second evaporator (21) is connected in series to the first waste heat recovery branch.

4. The thermal management system according to claim 2, characterized in that: The thermal management system further comprises a motor heat exchange circulation loop, wherein the motor heat exchange circulation loop is used to cool the motor (51); The first channel of the second evaporator (21), the first channel of the first evaporator (11), the battery heater (12), and the battery (100) are sequentially connected in series to form a second waste heat recovery branch, and both ends of the second waste heat recovery branch are connected to the battery heat exchange circulation circuit.

5. The thermal management system according to claim 1, characterized in that: The thermal management system also includes a heat pump unit, which includes an outdoor heat exchanger (43), a first compressor (41), a heat pump core (42) and a second expansion valve. The outdoor heat exchanger (43), the first compressor (41), the heat pump core (42) and the second expansion valve are connected in series in sequence to form a second heat pump circulation loop.

6. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a cooling branch, the cooling branch being connected in series in the battery heat exchange circulation loop between the first evaporator (11) and the battery (100), and the first channel of the second evaporator (21) being connected in series to the cooling branch; The thermal management system also includes a heat pump unit, which includes a first compressor (41), a heat pump core (42), an outdoor heat exchanger (43) and a first expansion valve, and the second channel of the second evaporator (21), the first compressor (41), the heat pump core (42), the outdoor heat exchanger (43) and the first expansion valve are connected in series in sequence to form a third heat pump circulation loop.

7. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a heat pump unit, wherein the heat pump unit comprises a heat pump evaporator (44), a first compressor (41), a heat pump core (42), an outdoor heat exchanger (43) and a third expansion valve (63); the heat pump evaporator (44), the first compressor (41), the heat pump core (42), the outdoor heat exchanger (43) and the third expansion valve (63) are sequentially connected in series to form a fourth heat pump circulation loop.

8. The thermal management system according to claim 7, characterized in that: The heat pump evaporator (44) is connected in parallel with the second channel of the second evaporator (21); The thermal management system further comprises a cooling branch, the cooling branch being connected in series in the battery heat exchange circulation loop between the first evaporator (11) and the battery (100), and the first channel of the second evaporator (21) being connected in series to the cooling branch.

9. The thermal management system according to any one of claims 2 to 8, characterized in that: The heat pump unit further comprises a second compressor (61), a battery condenser (62) and a third expansion valve (63); the second channel of the first evaporator (11), the second compressor (61), the battery condenser (62) and the third expansion valve (63) are sequentially connected in series to form a battery heat pump circulation loop.

10. A vehicle, characterized in that Comprising a thermal management system as claimed in any one of claims 1 to 9.

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