Integrated thermal management system for new energy vehicle

Abstract

The utility model relates to the technical field of vehicle thermal management, in particular to an integrated thermal management system for a new energy vehicle. Comprising an indoor refrigeration circulation pipeline, a battery cooling circulation pipeline, a heat pump circulation pipeline, a warm air circulation pipeline, a battery circulation pipeline, a motor electric control circulation pipeline, a motor electric control heat dissipation circulation pipeline and a battery heat dissipation circulation pipeline. The system is further provided with a first heat exchanger, a second heat exchanger, a third heat exchanger, a motor electric control radiator, a battery radiator and the like which are used for heat exchange in the system. A first circulating pump, a second circulating pump and a third circulating pump are arranged to provide necessary power for the system; according to the utility model, the integrated heat management of the new energy vehicle can be controlled under multiple working conditions; and the use of multi-opening valves is reduced, the control difficulty is reduced, and replacement and maintenance are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle thermal management, in particular to an integrated thermal management system for new energy vehicles. Background Art

[0002] With the development of the economy, global energy consumption has also increased, and the use of clean green energy has become a trend; with the formulation of carbon neutrality goals, new energy vehicles have also become an important area of ​​research and development.

[0003] In the field of new energy vehicle research and development, integrated thermal management systems are gaining increasing attention. These systems are a crucial component of vehicle safety. By monitoring and controlling the temperatures of the battery, motor, and electronic control unit, they can prevent safety incidents such as thermal runaway. Thermal management systems can also work in conjunction with the vehicle's air conditioning system, utilizing heat or coolant generated by the battery to heat or cool the passenger compartment, enhancing passenger comfort. Integrated thermal management throughout the vehicle keeps the motor and battery within their optimal operating temperature range for maximum efficiency. Combined with heat pump air conditioning technology, this can further extend vehicle range.

[0004] However, the current thermal management systems of new energy vehicles still face the problem of needing to improve thermal management efficiency while meeting the requirements of easy management of multiple working conditions. In order to achieve the above goals, continuous research and development is still needed. Therefore, it is necessary to develop a thermal management system that is efficient and easy to manage. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated thermal management system for new energy vehicles, which is used to realize integrated thermal management of new energy vehicles under multiple working conditions; and reduce the use of multiple valves and reduce the difficulty of control.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an integrated thermal management system for a new energy vehicle, comprising an indoor refrigeration circulation pipeline, a battery cooling circulation pipeline, a heat pump circulation pipeline, a warm air circulation pipeline, a battery circulation pipeline, a motor electronic control circulation pipeline, a motor electronic control heat dissipation circulation pipeline, a four-way valve, a compressor, an outdoor condenser, an indoor evaporator, a gas-liquid separator, a first heat exchanger, a second heat exchanger, a third heat exchanger, an indoor warm air core, a battery, a heater, a motor, a controller, a motor electronic control radiator, a first expansion valve, a second expansion valve, a third expansion valve, a first three-way valve, a second three-way valve, a third three-way valve, a first circulation pump, a second circulation pump, a third circulation pump, a charger, a DCDC module, a battery heat dissipation circulation pipeline, a battery radiator, a first two-way valve, a second two-way valve, a third two-way valve, a fourth two-way valve, a fifth two-way valve, and a sixth two-way valve;

[0007] The indoor refrigeration cycle pipeline is connected in series with a compressor, a first three-way valve, an outdoor condenser, a second expansion valve, an indoor evaporator, and a gas-liquid separator;

[0008] The battery cooling circulation pipeline is connected in series with a third expansion valve and a first heat exchanger. The inlet of the battery cooling circulation pipeline is connected to the outdoor condenser and the indoor refrigeration circulation pipeline between the second expansion valve. The outlet of the battery cooling circulation pipeline is connected to the indoor refrigeration circulation pipeline between the indoor evaporator and the gas-liquid separator.

[0009] The heat pump circulation pipeline is connected in series with a second heat exchanger, a first expansion valve, and a third heat exchanger; two ports of the first three-way valve are respectively connected to the indoor refrigeration circulation pipeline, the third port of the first three-way valve is connected to the inlet of the heat pump circulation pipeline, and the outlet of the heat pump circulation pipeline is connected to the indoor refrigeration circulation pipeline between the indoor evaporator and the gas-liquid separator;

[0010] The warm air circulation pipeline is connected in series with a first circulation pump, an indoor warm air core, a four-way valve, and a second heat exchanger;

[0011] The battery circulation pipeline is connected in series with a third three-way valve, a second circulation pump, a battery, a heater, a first heat exchanger, and a four-way valve;

[0012] Two ports of the four-way valve are connected to the warm air circulation pipeline, and the other two ports of the four-way valve are connected to the battery circulation pipeline;

[0013] The motor electronic control circulation pipeline is connected in series with a third circulation pump, a second three-way valve, a third heat exchanger, a charger, a DCDC module, a motor, and a controller; the other end of the controller is connected to the third circulation pump;

[0014] Among them, the motor electronic control radiator is connected in series in the motor electronic control heat dissipation circulation pipeline;

[0015] The two ports of the second three-way valve are respectively connected to the motor electronic control circulation pipeline, the third port of the second three-way valve is connected to the inlet of the motor electronic control heat dissipation circulation pipeline, and the outlet of the motor electronic control heat dissipation circulation pipeline is connected to the motor electronic control circulation pipeline between the charger and the third heat exchanger;

[0016] Among them, a battery radiator is connected in series in the battery motor electronic control heat dissipation circulation pipeline; one end of the battery radiator is connected to the port of the third three-way valve, and the other end is connected to the battery circulation pipeline between the heater and the first heat exchanger.

[0017] Furthermore, the heater is a PTC heater, and the first heat exchanger, the second heat exchanger, and the third heat exchanger are all double-channel plate heat exchangers.

[0018] Furthermore, the first three-way valve, the second three-way valve, and the third three-way valve are all two-position three-way valves.

[0019] Furthermore, the first expansion valve is a thermal expansion valve or an electronic expansion valve, the second expansion valve is a thermal expansion valve or an electronic expansion valve, and the third expansion valve is an electronic expansion valve.

[0020] Furthermore, the motor is a drive motor and the controller is a motor controller.

[0021] Among them, the first three-way valve is replaced by a first two-way valve and a second two-way valve. The first two-way valve is connected in series in the indoor refrigeration circulation pipeline and is located between the compressor and the outdoor condenser. The second two-way valve is connected in series in the heat pump circulation pipeline and is located upstream of the second heat exchanger. The inlet of the heat pump circulation pipeline is connected to the indoor refrigeration circulation pipeline between the compressor and the first two-way valve.

[0022] Among them, the second three-way valve is replaced by the third two-way valve and the fourth two-way valve. The third two-way valve is connected in series in the motor electronic control circulation pipeline and is located between the third circulation pump and the third heat exchanger. The fourth two-way valve is connected in series in the motor electronic control heat dissipation circulation pipeline and is located upstream of the motor electronic control radiator. The inlet of the motor electronic control heat dissipation circulation pipeline is connected to the motor electronic control circulation pipeline between the third circulation pump and the third two-way valve.

[0023] Among them, the third three-way valve is replaced by the fifth two-way valve and the sixth two-way valve. The fifth two-way valve is connected in series in the battery circulation pipeline and is located between the second circulation pump and the four-way valve. The sixth two-way valve is connected in series in the battery motor electronically controlled heat dissipation circulation pipeline and is located upstream of the battery radiator. The inlet of the battery motor electronically controlled heat dissipation circulation pipeline is connected to the battery circulation pipeline between the second circulation pump and the fifth two-way valve.

[0024] Furthermore, the four-way valve is replaced by a plurality of three-way valves or two-way valves.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention has a reasonable design and a simple structure, which not only makes the heat pump system more efficient when the ambient temperature is low and effectively avoids frosting of the outdoor heat exchanger; but also the relevant control valves in the entire system only use three three-way valves and one four-way valve, reducing the use of multiple valves, reducing the control difficulty, and making it easier to replace and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the working condition of embodiment 2 of the present utility model;

[0028] Figure 3 This is a schematic diagram of the working condition of embodiment 3 of the present utility model;

[0029] Figure 4 This is a schematic diagram of the working condition of embodiment 4 of the present utility model;

[0030] Figure 5 This is a schematic diagram of the working condition of embodiment 5 of the present utility model;

[0031] Figure 6 This is a schematic diagram of the working condition of embodiment 6 of the present utility model;

[0032] Figure 7 This is a schematic diagram of the working condition of embodiment 7 of the present utility model;

[0033] Figure 8 This is a schematic diagram of the working condition of Example 8 of the present utility model;

[0034] Figure 9 This is a schematic diagram of the working condition of Example 9 of the utility model;

[0035] Figure 10 This is a schematic diagram of the functional replacement structure of the three-way valve and the four-way valve of the utility model.

[0036] In the figure: 1. Indoor refrigeration circulation pipeline, 2. Battery cooling circulation pipeline, 3. Heat pump circulation pipeline, 4. Warm air circulation pipeline, 5. Battery circulation pipeline, 6. Motor electronic control circulation pipeline, 7. Motor electronic control heat dissipation circulation pipeline, 8. Four-way valve, 9. Compressor, 10. Outdoor condenser, 11. Indoor evaporator, 12. Gas-liquid separator, 13. First heat exchanger, 14. Second heat exchanger, 15. Third heat exchanger, 16. Indoor heater core, 17. Battery, 18. Heater, 19. Motor, 20. Controller, 21. Motor-controlled radiator, 22. First expansion valve, 23. Second expansion valve, 24. Third expansion valve, 25. First three-way valve, 26. Second three-way valve, 27. Third three-way valve, 28. First circulation pump, 29. Second circulation pump, 30. Third circulation pump, 31. Charger, 32. DCDC module, 33. Battery heat dissipation circulation pipeline, 34. Battery radiator, 35. First two-way valve, 36. Second two-way valve, 37. Third two-way valve, 38. Fourth two-way valve, 39. Fifth two-way valve, 40. Sixth two-way valve. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0038] Refer to the attached Figure 1 , the utility model provides the following technical solutions:

[0039] It includes an indoor refrigeration circulation pipeline 1, a compressor 9, an outdoor condenser 10, an indoor evaporator 11, and a gas-liquid separator 12. It also includes a battery cooling circulation pipeline 2, a heat pump circulation pipeline 3, a warm air circulation pipeline 4, a battery circulation pipeline 5, a motor electronic control circulation pipeline 6, a motor electronic control heat dissipation circulation pipeline 7, and a battery motor electronic control heat dissipation circulation pipeline 33;

[0040] The indoor refrigeration cycle pipeline 1 is connected in series with a compressor 9, a first three-way valve 25, an outdoor condenser 10, a second expansion valve 23, an indoor evaporator 11, and a gas-liquid separator 12;

[0041] The battery cooling circulation pipeline 2 is connected in series with the third expansion valve 24 and the first heat exchanger 13. The inlet of the battery cooling circulation pipeline 2 is connected to the indoor refrigeration circulation pipeline 1 between the outdoor condenser 10 and the second expansion valve 23. The outlet of the battery cooling circulation pipeline 2 is connected to the indoor refrigeration circulation pipeline 1 between the indoor evaporator 11 and the gas-liquid separator 12.

[0042] The heat pump circulation pipeline 3 is connected in series with the second heat exchanger 14, the first expansion valve 22, and the third heat exchanger 15. The two ports of the first three-way valve 25 are respectively connected to the indoor refrigeration circulation pipeline 1, the third port of the first three-way valve 25 is connected to the inlet of the heat pump circulation pipeline 3, and the outlet of the heat pump circulation pipeline 3 is connected to the indoor refrigeration circulation pipeline 1 between the indoor evaporator 11 and the gas-liquid separator 12.

[0043] The first circulation pump 28, the indoor heating core 16, the four-way valve 8, and the second heat exchanger 14 are connected in series in the warm air circulation pipeline 4;

[0044] The battery circulation line 5 is serially connected with the third three-way valve 27, the second circulation pump 29, the battery 17, the heater 18, the first heat exchanger 13, and the four-way valve 8;

[0045] Two ports of the four-way valve 8 are connected to the warm air circulation pipeline 4, and the other two ports of the four-way valve 8 are connected to the battery circulation pipeline 5;

[0046] The motor electronic control circulation pipeline 6 is connected in series with the third circulation pump 30, the second three-way valve 26, the third heat exchanger 15, the charger 31, the DCDC module 32, the motor 19, and the controller 20; the other end of the controller 20 is connected to the third circulation pump 30;

[0047] The motor electronic control heat dissipation circulation pipeline 7 is connected in series with the motor electronic control radiator 21;

[0048] Two ports of the second three-way valve 26 are respectively connected to the motor electronic control circulation pipeline 6, the third port of the second three-way valve 26 is connected to the inlet of the motor electronic control heat dissipation circulation pipeline 7, and the outlet of the motor electronic control heat dissipation circulation pipeline 7 is connected to the motor electronic control circulation pipeline 6 between the charger 31 and the third heat exchanger 15;

[0049] A battery radiator 34 is connected in series in the battery motor electronic control heat dissipation circulation pipeline 33 ; one end of the battery radiator 34 is connected to the port of the third three-way valve 27 , and the other end is connected to the battery circulation pipeline 5 between the heater 18 and the first heat exchanger 13 .

[0050] In this embodiment, the heater 18 is a PTC heater, and the first heat exchanger 13 , the second heat exchanger 14 , and the third heat exchanger 15 are all double-channel plate heat exchangers.

[0051] In this embodiment, the first three-way valve 25 , the second three-way valve 26 , and the third three-way valve 27 are all two-position three-way valves.

[0052] In this embodiment, the first expansion valve 22 is a thermal expansion valve or an electronic expansion valve, the second expansion valve 23 is a thermal expansion valve or an electronic expansion valve, and the third expansion valve 24 is an electronic expansion valve.

[0053] In this embodiment, the motor 19 is a driving motor, and the controller 20 is a motor controller. Example 2

[0054] This embodiment further illustrates the operation mode of embodiment 1:

[0055] Refer to the attached Figure 2 :

[0056] In summer, the temperature is not high, so the cab does not need to be cooled. However, the battery and motor electronic control need to be cooled:

[0057] The D and F ports of the second three-way valve 26 are connected, the G and H ports of the third three-way valve 27 are connected, the M and N ports of the four-way valve 8 are connected, and the K and L ports of the four-way valve 8 are connected. The first circulation pump 28 is stopped, while the second and third circulation pumps 29 and 30 are running. The compressor 9 is stopped, and the first, second, and third expansion valves 22, 23, and 24 are all closed. The heater 18 does not operate. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment via the motor's electronically controlled radiator 21, while the battery 17 dissipates heat to the environment via the battery radiator 34.

[0058] The M and N ports of the four-way valve 8 are connected, and the K and L ports of the four-way valve 8 are connected, which can prevent the heat dissipated by the battery 17 from being transferred to the indoor heater core 16 through the circulating medium, thereby preventing the cab from being passively heated. Example 3

[0059] This embodiment further illustrates the operation mode of embodiment 1:

[0060] Refer to the attached Figure 3 :

[0061] Control the A and B ports of the first three-way valve 25, the D and F ports of the second three-way valve 26, the G and H ports of the third three-way valve 27, the M and N ports of the four-way valve 8, and the K and L ports of the four-way valve 8. The first circulation pump 28 is stopped, while the second and third circulation pumps 29 and 30 are running. The compressor 9 is running, the second expansion valve 23 is open, and the first and third expansion valves 22 and 24 are closed. The heater 18 is not operating. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment via the motor's electronically controlled radiator 21. The battery 17 dissipates heat to the environment via the battery radiator 34. The cab is cooled by the indoor evaporator 11.

[0062] The M and N ports of the four-way valve 8 are connected, and the K and L ports of the four-way valve 8 are connected, which can prevent the heat dissipated by the battery 17 from being transferred to the indoor heater core 16 through the circulating medium, thereby preventing the cab from being passively heated. Example 4

[0063] This embodiment further illustrates the operation mode of embodiment 1:

[0064] Refer to the attached Figure 4 :

[0065] Control the A and B ports of the first three-way valve 25, the D and F ports of the second three-way valve 26, the G and J ports of the third three-way valve 27, the M and N ports of the four-way valve 8, and the K and L ports of the four-way valve 8. The first circulation pump 28 is stopped, while the second and third circulation pumps 29 and 30 are running. The compressor 9 is running, the second and third expansion valves 23 and 24 are both open, and the first expansion valve 22 is closed. The heater 18 is not operating. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment through the motor-controlled radiator 21. The battery 17 dissipates heat to the outside through the first heat exchanger 13. The cab is cooled by the indoor evaporator 11. Example 5

[0066] This embodiment further illustrates the operation mode of embodiment 1:

[0067] Refer to the attached Figure 5 :

[0068] The D and F ports of the second three-way valve 26 are connected, the G and J ports of the third three-way valve 27 are connected, the M and N ports of the four-way valve 8 are connected, and the K and L ports of the four-way valve 8 are connected. The first circulation pump 28 is stopped, while the second and third circulation pumps 29 and 30 are running. The compressor 9 is stopped, and the first, second, and third expansion valves 22, 23, and 24 are all closed. The heater 18 is operating. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment through the motor-controlled radiator 21, and the battery 17 is heated by the heater 18.

[0069] The M and N ports of the four-way valve 8 are connected, and the K and L ports of the four-way valve 8 are connected, which can prevent the heat generated by the heater 18 from being transferred to the indoor heater core 16 through the circulating medium, thereby accelerating the heating speed of the battery 17. Example 6

[0070] This embodiment further illustrates the operation mode of embodiment 1:

[0071] Refer to the attached Figure 6 :

[0072] The A and C ports of the first three-way valve 25, the D and E ports of the second three-way valve 26, the G and J ports of the third three-way valve 27, the M and N ports of the four-way valve 8, and the K and L ports of the four-way valve 8 are all connected. The first, second, and third circulating pumps 28, 29, and 30 are all in operation. The compressor 9 is running, the first expansion valve 22 is open, and the second and third expansion valves 23, 24 are closed. The heater 18 is operating. Heat from the charger 31, DC-DC module 32, motor 19, and controller 20 is dissipated outward through the third heat exchanger 15, while the battery 17 is heated by the heater 18. The air conditioning circulation system now enters heat pump mode. The heat generated by the compressor 19 is transferred to the warm air circulation pipeline 4 through the second heat exchanger 14, and then heats the cab through the indoor heater core 16. The air conditioning circulation system absorbs the heat generated by the charger 31, DCDC module 32, motor 19, and controller 20 through the third heat exchanger 15, rather than directly absorbing the ambient heat through the outdoor heat exchanger. This can prevent frost on the outdoor heat exchanger. Example 7

[0073] This embodiment further illustrates the operation mode of embodiment 1:

[0074] Refer to the attached Figure 7 :

[0075] The A and B ports of the first three-way valve 25, the D and F ports of the second three-way valve 26, the G and J ports of the third three-way valve 27, the K and M ports of the four-way valve 8, and the L and N ports of the four-way valve 8 are all connected. The first, second, and third circulating pumps 28, 29, and 30 are operated. The compressor 9 is stopped, and the first, second, and third expansion valves 22, 23, and 24 are all closed. The heater 18 is deactivated. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment via the motor's electronically controlled radiator 21. Heat generated by the battery 17 is heated by the interior heater core 16.

[0076] In order to prevent the heat from the battery 17 from being transferred to the heat pump circulation pipeline 3 through the second heat exchanger 14 and then dissipated to the environment through other components in the heat pump circulation pipeline, the A and B ports of the first three-way valve 25 can be controlled to be connected, and the A and C ports of the first three-way valve 25 can be isolated. The heat from the battery 17 can only heat the air-conditioning circulating medium in the heat pump circulation pipeline 3 between the first three-way valve 25 and the first expansion valve 22. Example 8

[0077] This embodiment further illustrates the operation mode of embodiment 1:

[0078] Refer to the attached Figure 8 :

[0079] The A and B ports of the first three-way valve 25, the D and F ports of the second three-way valve 26, the G and J ports of the third three-way valve 27, the K and M ports of the four-way valve 8, and the L and N ports of the four-way valve 8 are connected. The first, second, and third circulating pumps 28, 29, and 30 are operated. The compressor 9 operates, the second expansion valve 23 is open, and the first and third expansion valves 22, 24 are closed. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat to the environment via the motor-controlled radiator 21. The battery 17 dissipates heat outward via the indoor heater core 16, while the indoor evaporator 11 provides cooling. Air entering the cab first passes through the indoor evaporator 11 to cool and remove moisture, and then passes through the indoor heater core 16 to heat it, achieving dehumidification. If the heat dissipation from the battery 17 is insufficient, the electric heater 18 can be activated. Example 9

[0080] This embodiment further illustrates the operation mode of embodiment 1:

[0081] Refer to the attached Figure 9 :

[0082] The A and C ports of the first three-way valve 25, the D and E ports of the second three-way valve 26, the G and J ports of the third three-way valve 27, the K and M ports of the four-way valve 8, and the L and N ports of the four-way valve 8 are all connected. The first, second, and third circulating pumps 28, 29, and 30 are all operating. The compressor 9 is running, the first expansion valve 22 is open, and the second and third expansion valves 23, 24 are closed. The heater 18 is damaged and cannot operate. The charger 31, DC-DC module 32, motor 19, and controller 20 dissipate heat outward through the third heat exchanger 15. The air conditioning circulation system now enters heat pump mode. The heat generated by the compressor 19 is transferred to the warm air circulation pipeline 4 and the battery circulation pipeline 5 through the second heat exchanger 14. The circulating medium in the warm air circulation pipeline 4 and the battery circulation pipeline 5 heats the battery 17 while heating the cab through the indoor heater core 16. The air conditioning circulation system absorbs the heat generated by the charger 31, DCDC module 32, motor 19, and controller 20 through the third heat exchanger 15. Example 10

[0083] The difference between this embodiment and embodiment 1 is that:

[0084] Refer to the attached Figure 10 The functions of the three-way valves and four-way valves can be replaced: the function of the first three-way valve 25 can be replaced by the first two-way valve 35 and the second two-way valve 36, the function of the second three-way valve 26 can be replaced by the third two-way valve 37 and the fourth two-way valve 38, and the function of the third three-way valve 27 can be replaced by the fifth two-way valve 39 and the sixth two-way valve 40. Similarly, the function of the four-way valve 8 can also be replaced by multiple two-way valves or three-way valves.

[0085] The first three-way valve 25 is replaced by a first two-way valve 35 and a second two-way valve 36. The first two-way valve 35 is connected in series in the indoor refrigeration circulation pipeline 1 and is located between the compressor 9 and the outdoor condenser 10. The second two-way valve 36 is connected in series in the heat pump circulation pipeline 3 and is located upstream of the second heat exchanger 14. The inlet of the heat pump circulation pipeline 3 is connected to the indoor refrigeration circulation pipeline 1 between the compressor 9 and the first two-way valve 35.

[0086] The second three-way valve 26 is replaced by a third two-way valve 37 and a fourth two-way valve 38. The third two-way valve 37 is connected in series in the motor electronic control circulation pipeline 6 and is located between the third circulation pump 30 and the third heat exchanger 15. The fourth two-way valve 38 is connected in series in the motor electronic control heat dissipation circulation pipeline 7 and is located upstream of the motor electronic control radiator 21. The inlet of the motor electronic control heat dissipation circulation pipeline 7 is connected to the motor electronic control circulation pipeline 6 between the third circulation pump 30 and the third two-way valve 37.

[0087] The third three-way valve 27 is replaced by a fifth two-way valve 39 and a sixth two-way valve 40. The fifth two-way valve 39 is connected in series in the battery circulation pipeline 5 and is located between the second circulation pump 29 and the four-way valve 8. The sixth two-way valve 40 is connected in series in the battery motor electronically controlled heat dissipation circulation pipeline 33 and is located upstream of the battery radiator 34. The inlet of the battery motor electronically controlled heat dissipation circulation pipeline 33 is connected to the battery circulation pipeline 5 between the second circulation pump 29 and the fifth two-way valve 39.

[0088] The above embodiments illustrate the working principles of the main operating conditions. In addition, there are other operating conditions, and the relevant principles will not be described here one by one.

[0089] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated thermal management system for a new energy vehicle, comprising an indoor refrigeration cycle pipeline (1), a compressor (9), an outdoor condenser (10), an indoor evaporator (11), and a gas-liquid separator (12), characterized in that: It also includes a battery cooling circulation pipeline (2), a heat pump circulation pipeline (3), a warm air circulation pipeline (4), a battery circulation pipeline (5), a motor electronic control circulation pipeline (6), a motor electronic control heat dissipation circulation pipeline (7), and a battery motor electronic control heat dissipation circulation pipeline (33); The indoor refrigeration cycle pipeline (1) is connected in series with a compressor (9), a first three-way valve (25), an outdoor condenser (10), a second expansion valve (23), an indoor evaporator (11), and a gas-liquid separator (12); The battery cooling circulation pipeline (2) is connected in series with a third expansion valve (24) and a first heat exchanger (13); the inlet of the battery cooling circulation pipeline (2) is connected to the outdoor condenser (10) and the indoor refrigeration circulation pipeline (1) between the second expansion valve (23); and the outlet of the battery cooling circulation pipeline (2) is connected to the indoor refrigeration circulation pipeline (1) between the indoor evaporator (11) and the gas-liquid separator (12); The heat pump circulation pipeline (3) is sequentially connected in series with a second heat exchanger (14), a first expansion valve (22), and a third heat exchanger (15); two ports of the first three-way valve (25) are respectively connected to the indoor refrigeration circulation pipeline (1), the third port of the first three-way valve (25) is connected to the inlet of the heat pump circulation pipeline (3), and the outlet of the heat pump circulation pipeline (3) is connected to the indoor refrigeration circulation pipeline (1) between the indoor evaporator (11) and the gas-liquid separator (12); The warm air circulation pipeline (4) is serially connected with a first circulation pump (28), an indoor warm air core (16), a four-way valve (8), and a second heat exchanger (14); The battery circulation pipeline (5) is serially connected with a third three-way valve (27), a second circulation pump (29), a battery (17), a heater (18), a first heat exchanger (13), and a four-way valve (8); Two ports of the four-way valve (8) are connected to the warm air circulation pipeline (4), and the other two ports of the four-way valve (8) are connected to the battery circulation pipeline (5); The motor electronic control circulation pipeline (6) is serially connected with a third circulation pump (30), a second three-way valve (26), a third heat exchanger (15), a charger (31), a DCDC module (32), a motor (19), and a controller (20); the other end of the controller (20) is connected to the third circulation pump (30); The motor electronically controlled heat dissipation circulation pipeline (7) is connected in series with a motor electronically controlled radiator (21); The two ports of the second three-way valve (26) are respectively connected to the motor electronic control circulation pipeline (6), the third port of the second three-way valve (26) is connected to the inlet of the motor electronic control heat dissipation circulation pipeline (7), and the outlet of the motor electronic control heat dissipation circulation pipeline (7) is connected to the motor electronic control circulation pipeline (6) between the charger (31) and the third heat exchanger (15); A battery radiator (34) is connected in series within the battery motor electronic control heat dissipation circulation pipeline (33); one end of the battery radiator (34) is connected to the port of the third three-way valve (27), and the other end is connected to the battery circulation pipeline (5) between the heater (18) and the first heat exchanger (13).

2. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The heater (18) is a PTC heater, and the first heat exchanger (13), the second heat exchanger (14), and the third heat exchanger (15) are all double-channel plate heat exchangers.

3. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The first three-way valve (25), the second three-way valve (26), and the third three-way valve (27) are all two-position three-way valves.

4. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The first expansion valve (22) is a thermal expansion valve or an electronic expansion valve, the second expansion valve (23) is a thermal expansion valve or an electronic expansion valve, and the third expansion valve (24) is an electronic expansion valve.

5. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The motor (19) is a driving motor, and the controller (20) is a motor controller.

6. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The first three-way valve (25) is replaced by a first two-way valve (35) and a second two-way valve (36). The first two-way valve (35) is connected in series to the indoor refrigeration circulation pipeline (1) and is located between the compressor (9) and the outdoor condenser (10). The second two-way valve (36) is connected in series to the heat pump circulation pipeline (3) and is located upstream of the second heat exchanger (14). The inlet of the heat pump circulation pipeline (3) is connected to the indoor refrigeration circulation pipeline (1) between the compressor (9) and the first two-way valve (35).

7. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The second three-way valve (26) is replaced by a third two-way valve (37) and a fourth two-way valve (38). The third two-way valve (37) is connected in series to the motor electronic control circulation pipeline (6) and is located between the third circulation pump (30) and the third heat exchanger (15). The fourth two-way valve (38) is connected in series to the motor electronic control heat dissipation circulation pipeline (7) and is located upstream of the motor electronic control radiator (21). The inlet of the motor electronic control heat dissipation circulation pipeline (7) is connected to the motor electronic control circulation pipeline (6) between the third circulation pump (30) and the third two-way valve (37).

8. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The third three-way valve (27) is replaced by a fifth two-way valve (39) and a sixth two-way valve (40). The fifth two-way valve (39) is connected in series to the battery circulation pipeline (5) and is located between the second circulation pump (29) and the four-way valve (8). The sixth two-way valve (40) is connected in series to the battery motor electronically controlled heat dissipation circulation pipeline (33) and is located upstream of the battery radiator (34). The inlet of the battery motor electronically controlled heat dissipation circulation pipeline (33) is connected to the battery circulation pipeline (5) between the second circulation pump (29) and the fifth two-way valve (39).

9. The integrated thermal management system for new energy vehicles according to claim 1, characterized in that: The four-way valve (8) is replaced by a plurality of three-way valves or two-way valves.

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