Integrated heat management system with heat pump
By introducing an integrated thermal management system with heat pumps into the thermal management system of new energy vehicles and adopting a simple valve structure, the problems of low efficiency and high system complexity of the thermal management system in low temperature environments are solved, and efficient thermal management and safety hazards are achieved.
Patent Information
- Application Number
- CN202410741684.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-28
AI Technical Summary
At lower ambient temperatures, the air conditioning power consumption of the thermal management system of new energy vehicles is high, resulting in the attenuation of the vehicle's endurance. The multi-way valve system is complex in structure, and the fault location and maintenance are difficult, which poses safety hazards.
Design an integrated thermal management system with heat pumps to improve heat pump system efficiency by utilizing motor heat dissipation, and simplify the system through a simple three-way and four-way valve structure to reduce complexity.
Improve the efficiency of the heat pump system in a low-temperature environment, avoid frost of the heat exchanger, reduce the probability of system failure and safety accidents, and simplify system structure and maintenance.
Smart Images
Figure CN119704978A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a thermal management system for a new energy vehicle, in particular to an integrated thermal management system with a heat pump which can fully utilize the heat dissipation of a motor. Background Art
[0003] New energy vehicles are paying more and more attention to vehicle thermal management technology. The current technical development of thermal management systems for new energy vehicles has evolved from simple distributed three-electric thermal management to integrated three-electric thermal management, and a variety of three-electric thermal coupling systems have been developed. Through effective integrated thermal management technology, energy loss caused by temperature problems can be reduced. For example, batteries working at a suitable temperature can improve their charging and discharging efficiency and reduce energy loss; cooling of motors and electronic control units can also reduce performance degradation caused by overheating and improve overall energy utilization efficiency. At the same time, the thermal management system of new energy vehicles is an important part of ensuring vehicle safety. By monitoring and controlling the temperature of batteries, motors and electronic control units, safety accidents such as thermal runaway can be prevented. The thermal management system can also work in conjunction with the vehicle's air conditioning system, using the heat or coolant generated by the battery to heat or cool the passenger compartment to improve passenger comfort. Through vehicle integrated thermal management, the motor and battery can be kept in the optimal operating temperature range with the highest efficiency. Combined with heat pump air conditioning technology, the vehicle's endurance can be further improved.
[0004] However, at lower ambient temperatures, even if new energy vehicles use heat pump technology to absorb heat from the environment, the air conditioning power consumption is still high, which further increases the vehicle's endurance degradation. When the ambient temperature is below a certain level, such as -10°C, some thermal management systems can only use electric heaters for heating, and the compressor cannot be started due to the low ambient temperature. At this time, the endurance degradation is more serious. At the same time, many existing integrated thermal management technologies use eight-way valves, ten-way valves, and even twelve-way valves to integrate the vehicle's thermal management circuit, but the more valve ports a multi-way valve has, the more complex the system structure will be; on the other hand, since all thermal management lines are integrated / connected to the multi-way valve, the multi-way valve becomes the "hub" of the vehicle's thermal management system. Once the eight-way valve, ten-way valve, or twelve-way valve fails, not only is the difficulty of fault location and repair very high, but it can also sometimes lead to safety accidents. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention proposes an integrated thermal management system with a heat pump, which not only utilizes the heat dissipation of the motor to make the heat pump system more efficient, but also uses only simple three-way valves and four-way valves as control valves, with simple structure and complete functions.
[0006] The present invention is realized by the following technical scheme, which includes an indoor refrigeration circulation pipeline, a compressor, an outdoor condenser, an indoor evaporator, a gas-liquid separator, a battery cooling circulation pipeline, a heat pump circulation pipeline, a battery and a warm air circulation pipeline, a motor electronic control circulation pipeline, a heat dissipation circulation pipeline, a four-way valve, a first heat exchanger, an indoor condenser, a second heat exchanger, a battery, a heater, an indoor warm air core, a motor, a controller, a radiator, a first expansion valve, a second expansion valve, a third expansion valve, a first three-way valve, a second three-way valve, a first circulation pump, and a second circulation pump; the compressor, the first three-way valve, the outdoor condenser, the second expansion valve, the indoor evaporator, and the gas-liquid separator are sequentially connected in series in the indoor refrigeration circulation pipeline, the third expansion valve and the first heat exchanger are sequentially connected in series in the battery cooling circulation pipeline, the indoor condenser, the first expansion valve, and the second heat exchanger are sequentially connected in series in the heat pump circulation pipeline; the 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 heat pump The outlet of the circulation pipeline is connected to the indoor refrigeration circulation pipeline between the indoor evaporator and the gas-liquid separator; the inlet of the battery cooling circulation pipeline is connected to the indoor refrigeration circulation pipeline between the outdoor condenser and the second expansion valve, and 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; the first circulation pump, the four-way valve, the indoor warm air core, the first heat exchanger, the battery, and the heater are connected in series in the battery and the warm air circulation pipeline in sequence, the second circulation pump, the second three-way valve, the second heat exchanger, the four-way valve, the motor, and the controller are connected in series in the motor electronic control circulation pipeline in sequence, and the radiator is connected in series in the heat dissipation circulation pipeline; 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 heat dissipation circulation pipeline, and the outlet of the heat dissipation circulation pipeline is connected to the motor electronic control circulation pipeline between the four-way valve and the second heat exchanger; the two ports of the four-way valve are connected to the battery and the warm air circulation pipeline, and the other two ports of the four-way valve are connected to the motor electronic control circulation pipeline.
[0007] Furthermore, in the present invention, the heater is a PTC heater, and the first heat exchanger and the second heat exchanger are both double-channel plate heat exchangers.
[0008] Furthermore, in the present invention, the first three-way valve and the second three-way valve are both two-position three-way valves.
[0009] Furthermore, in the present invention, 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.
[0010] Furthermore, in the present invention, when the third expansion valve is a thermal expansion valve, the integrated thermal management system further includes a solenoid valve, which is connected in series in the battery cooling circulation pipeline and is located upstream of the third expansion valve, and the solenoid valve is used to control the on-off of the circulating medium in the battery cooling circulation pipeline. If there is no solenoid valve, when the third expansion valve is a thermal expansion valve, the third expansion valve will always be in an open state when the compressor is in a working state.
[0011] Furthermore, in the present invention, the motor is a drive motor and the controller is a motor controller.
[0012] Furthermore, the present invention also includes a generator, which is connected in series in the motor electronic control circulation pipeline and is located between the motor and the controller.
[0013] Furthermore, in the present invention, the function of the first three-way valve is realized by the first two-way valve and the 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 indoor condenser. 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; the function of the second three-way valve is realized 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 second circulation pump and the second heat exchanger. The fourth two-way valve is connected in series in the heat dissipation circulation pipeline and is located upstream of the radiator. The inlet of the heat dissipation circulation pipeline is connected to the motor electronic control circulation pipeline between the second circulation pump and the third two-way valve.
[0014] Furthermore, in the present invention, the function of the four-way valve is realized by a plurality of three-way valves or two-way valves, and the function of the four-way valve is realized by the cooperation of a plurality of three-way valves or two-way valves.
[0015] 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 can not only make the heat pump system more efficient when the ambient temperature is low and effectively avoid frosting of the outdoor heat exchanger; but also the relevant control valves in the entire system only use two three-way valves and one four-way valve, without using more complex multi-way valves, which can reduce the probability of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;
[0017] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0018] Among them, 1. indoor refrigeration circulation pipeline, 2. battery cooling circulation pipeline, 3. heat pump circulation pipeline, 4. battery and warm air circulation pipeline, 5. motor electronic control circulation pipeline, 6. heat dissipation circulation pipeline, 7. four-way valve, 8. compressor, 9. outdoor condenser, 10. indoor evaporator, 11. gas-liquid separator, 12. first heat exchanger, 13. indoor condenser, 14. second heat exchanger, 15. battery, 16. heater, 17. indoor warm air core, 18. motor, 19. controller, 20. radiator, 21. first expansion valve, 22. second expansion valve, 23. third expansion valve, 24. first three-way valve, 25. second three-way valve, 26. first circulation pump, 27. second circulation pump, 28. first two-way valve, 29. second two-way valve, 30. third two-way valve, 31. fourth two-way valve. DETAILED DESCRIPTION
[0019] In order to make the contents of the present invention easier to understand, the technical scheme of the present invention is further explained below in conjunction with specific embodiments. The examples are only used to illustrate the present invention, but the present invention is not limited to the contents. The operation methods in the following examples without specifying specific conditions are usually carried out under conventional conditions or according to the product instructions. The chemical reagents without specifying the manufacturer are all conventional drugs that comply with national standards and can be purchased on the market.
[0020] Embodiment 1
[0021] like Figure 1As shown, the present invention includes an indoor refrigeration circulation pipeline 1, a battery cooling circulation pipeline 2, a heat pump circulation pipeline 3, a battery and warm air circulation pipeline 4, a motor electronic control circulation pipeline 5, a heat dissipation circulation pipeline 6, a four-way valve 7, a compressor 8, an outdoor condenser 9, an indoor evaporator 10, a gas-liquid separator 11, a first heat exchanger 12, an indoor condenser 13, a second heat exchanger 14, a battery 15, an indoor warm air core 17, a motor 18, a controller 19, a radiator 20, a first expansion valve 21, a second expansion valve 22, a third expansion valve 23, a first three-way valve 24, a second three-way valve 25, a first circulation pump 26, and a second circulation pump 27. The compressor 8, the first three-way valve 24, the outdoor condenser 9, the second expansion valve 22, the indoor evaporator 10, and the gas-liquid separator 11 are connected in series in the indoor refrigeration circulation pipeline 1 in sequence, the third expansion valve 23 and the first heat exchanger 12 are connected in series in the battery cooling circulation pipeline 2 in sequence, and the indoor condenser 13, the first expansion valve 21, and the second heat exchanger 14 are connected in series in the heat pump circulation pipeline 3 in sequence; the A and B ports of the first three-way valve 24 are respectively connected to the indoor refrigeration circulation pipeline 1, the C port of the first three-way valve 24 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 10 and the gas-liquid separator 11; the inlet of the battery cooling circulation pipeline 2 is connected to the indoor refrigeration circulation pipeline 1 between the outdoor condenser 9 and the second expansion valve 22, and the outlet of the battery cooling circulation pipeline 2 is connected to the indoor refrigeration circulation pipeline 1 between the indoor evaporator 10 and the gas-liquid separator 11. The first circulation pump 26, the four-way valve 7, the indoor heating core 17, the first heat exchanger 12, the battery 15, and the heater 16 are connected in series in the battery and the heating circulation pipeline 4 in sequence; the second circulation pump 27, the second three-way valve 25, the second heat exchanger 14, the four-way valve 7, the motor 18, and the controller 19 are connected in series in the motor electronic control circulation pipeline 5 in sequence; the radiator 20 is connected in series in the heat dissipation circulation pipeline 6; the D and E ports of the second three-way valve 25 are respectively connected to the motor electronic control circulation pipeline 5, the F port of the second three-way valve 25 is connected to the inlet of the heat dissipation circulation pipeline 6, and the outlet of the heat dissipation circulation pipeline 6 is connected to the motor electronic control circulation pipeline 5 between the four-way valve 7 and the second heat exchanger 14; the G and H ports of the four-way valve 7 are connected to the battery and the heating circulation pipeline 4, and the J and K ports of the four-way valve 7 are connected to the motor electronic control circulation pipeline 5. The heater 16 is a PTC heater, the first heat exchanger 12 and the second heat exchanger 14 are both double-channel plate heat exchangers, the first three-way valve 24 and the second three-way valve 25 are both two-position three-way valves, and the first expansion valve 21, the second expansion valve 22, and the third expansion valve 23 are all electronic expansion valves.
[0022] During the implementation of the present invention, the main implementation conditions and control methods of each component are as follows:
[0023] Working condition 1: The cab needs to be cooled, the battery 15 does not need to be cooled or heated, and the motor 18 and the controller 19 do not need to dissipate heat
[0024] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are isolated, the second expansion valve 22 is opened, the first expansion valve 21 and the third expansion valve 23 are closed; the compressor 8 is operated, and the first circulation pump 26 and the second circulation pump 27 are stopped. The outdoor condenser 9 dissipates heat to the environment, and the indoor evaporator 10 absorbs heat in the cab.
[0025] Working condition 2: The cab needs to be cooled, the battery 15 needs to be kept warm, and the motor 18 and the controller 19 need to be cooled.
[0026] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are blocked, the second expansion valve 22 is opened, and the first expansion valve 21 and the third expansion valve 23 are closed; the D and F ports of the second three-way valve 25 are connected, the D and E ports of the second three-way valve 25 are blocked, the J and K ports of the four-way valve 7 are connected, and the G and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The outdoor condenser 9 dissipates heat to the environment, and the indoor evaporator 10 absorbs heat in the cab; the motor 18 and the controller 19 dissipate heat to the environment through the radiator 20, and the coolant in the battery and the warm air circulation pipeline 4 circulates itself.
[0027] Working condition 3: The cab needs to be cooled, and the battery 15, motor 18, and controller 19 need to be cooled
[0028] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are blocked, the second expansion valve 22 is opened, and the first expansion valve 21 and the third expansion valve 23 are closed; the D and F ports of the second three-way valve 25 are connected, the D and E ports of the second three-way valve 25 are blocked, the J and G ports of the four-way valve 7 are connected, and the K and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The outdoor condenser 9 dissipates heat to the environment, and the indoor evaporator 10 absorbs heat in the cab; the battery and warm air circulation pipeline 4, the motor electronic control circulation pipeline 5, and the heat dissipation circulation pipeline 6 are connected together, and the battery 15, the motor 18, and the controller 19 dissipate heat to the environment through the radiator 20.
[0029] Working condition 4: The cab needs to be cooled, the battery 15 needs strong heat dissipation, and the motor 18 and the controller 19 need heat dissipation
[0030] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are blocked, the second expansion valve 22 and the third expansion valve 23 are opened, and the first expansion valve 21 is closed; the D and F ports of the second three-way valve 25 are connected, the D and E ports of the second three-way valve 25 are blocked, the J and K ports of the four-way valve 7 are connected, and the G and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The outdoor condenser 9 dissipates heat to the environment, and the indoor evaporator 10 absorbs heat in the cab; the battery 15 dissipates heat to the outside through the first heat exchanger 12, and the motor 18 and the controller 19 dissipate heat to the environment through the radiator 20.
[0031] Working condition 5: The cab needs to be cooled, and the battery 15, motor 18, and controller 19 need strong heat dissipation
[0032] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are blocked, the second expansion valve 22 and the third expansion valve 23 are opened, and the first expansion valve 21 is closed; the D and F ports of the second three-way valve 25 are connected, the D and E ports of the second three-way valve 25 are blocked, the J and G ports of the four-way valve 7 are connected, and the K and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The outdoor condenser 9 dissipates heat to the environment, and the indoor evaporator 10 absorbs heat in the cab; the battery and warm air circulation pipeline 4, the motor electronic control circulation pipeline 5, and the heat dissipation circulation pipeline 6 are connected together, and the battery 15, the motor 18, and the controller 19 dissipate heat to the outside through the first heat exchanger 12 and the radiator 20 at the same time.
[0033] Working condition 6: The cab needs to be slightly heated, and the battery 15, motor 18, and controller 19 need to be cooled
[0034] The D and F ports of the second three-way valve 25 are controlled to be connected, the D and E ports of the second three-way valve 25 are isolated, the J and K ports of the four-way valve 7 are connected, and the G and H ports of the four-way valve 7 are connected; the first circulation pump 26 and the second circulation pump 27 are operated, and the compressor 8 is stopped. The battery 15 dissipates heat to the cab through the indoor heater core 16, and the motor 18 and the controller 19 dissipate heat to the environment through the radiator 20. At this time, the compressor does not work, and the heat required by the cab is achieved by the heat dissipation of the battery 15.
[0035] Working condition 7: The cab needs to be heated, and the battery 15, motor 18, and controller 19 need to be cooled
[0036] The D and E ports of the second three-way valve 25 are connected, the D and F ports of the second three-way valve 25 are blocked, the J and G ports of the four-way valve 7 are connected, and the K and H ports of the four-way valve 7 are connected; the first circulation pump 26 and the second circulation pump 27 are running, and the compressor 8 is stopped. The battery and the warm air circulation pipeline 4 and the motor electronic control circulation pipeline 5 are connected together, and the battery 15, the motor 18, and the controller 19 dissipate heat to the cab through the indoor warm air core 16.
[0037] The heat dissipation pipeline 6 is not connected to the battery and the warm air circulation pipeline 4 and the motor electronic control circulation pipeline 5, so as to prevent the heat of the battery 15, the motor 18 and the controller 19 from being dissipated into the environment through the radiator 20.
[0038] Working condition 8: The cab needs strong heating, the battery 15 needs to be heated, and the motor 18 and the controller 19 need to be cooled
[0039] The A and C ports of the first three-way valve 24 are controlled to be connected, the A and B ports of the first three-way valve 24 are blocked, the first expansion valve 21 is opened, and the second expansion valve 22 and the third expansion valve 23 are closed; the D and E ports of the second three-way valve 25 are connected, the D and F ports of the second three-way valve 25 are blocked, the J and K ports of the four-way valve 7 are connected, and the G and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated, and the heater 16 is working. The indoor condenser 13 dissipates heat into the cab, the battery 15 is heated by the heater 16, and the motor 18 and the controller 19 dissipate heat to the outside through the second heat exchanger 14. The heat pump system absorbs the heat of the motor 18 and the controller 19 through the second heat exchanger 14, thereby improving the working efficiency of the compressor 8 in a low temperature environment; at the same time, it does not directly absorb the heat of the environment through the radiator 20, which can effectively prevent the radiator 20 from frosting in a low temperature environment.
[0040] Working condition 9: The cab needs strong heating, and the battery 15, motor 18, and controller 19 need to be cooled
[0041] The A and C ports of the first three-way valve 24 are controlled to be connected, the A and B ports of the first three-way valve 24 are blocked, the first expansion valve 21 is opened, and the second expansion valve 22 and the third expansion valve 23 are closed; the D and E ports of the second three-way valve 25 are connected, the D and F ports of the second three-way valve 25 are blocked, the J and G ports of the four-way valve 7 are connected, and the K and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The indoor condenser 13 dissipates heat into the cab, the battery and the warm air circulation pipeline 4, and the motor electronic control circulation pipeline 5 are connected together, and the battery 15, the motor 18, and the controller 19 dissipate heat to the outside through the second heat exchanger 14. The heat pump system absorbs the heat of the battery 15, the motor 18, and the controller 19, thereby improving the working efficiency of the compressor 8 in a low temperature environment.
[0042] Working condition 10: Dehumidification is required in the cab
[0043] The A and B ports of the first three-way valve 24 are controlled to be connected, the A and C ports of the first three-way valve 24 are blocked, the second expansion valve 22 is opened, and the first expansion valve 21 and the third expansion valve 23 are closed; the D and F ports of the second three-way valve 25 are connected, the D and E ports of the second three-way valve 25 are blocked, the J and K ports of the four-way valve 7 are connected, and the G and H ports of the four-way valve 7 are connected; the compressor 8, the first circulation pump 26, and the second circulation pump 27 are operated. The indoor evaporator 10 and the indoor heater core 17 are both working, and the heat of the battery 15 is dissipated through the indoor heater core 17. The gas entering the cab is first cooled and dehydrated by the indoor evaporator 10, and then heated by the indoor heater core 17, so as to achieve the purpose of dehumidification. The motor 18 and the controller 19 dissipate heat to the outside through the radiator 20.
[0044] If the heat dissipated by the battery 15 is insufficient to supply heat to the indoor heater core 17, the D and E ports of the second three-way valve 25 are controlled to be connected, the D and F ports of the second three-way valve 25 are isolated, the J and G ports of the four-way valve 7 are connected, and the K and H ports of the four-way valve 7 are connected, so as to supply heat to the indoor heater core 17 by absorbing the heat dissipated by the battery 15, the motor 18 and the controller 19; if it is still insufficient, the heater 16 is turned on.
[0045] The above are only the working principles of ten main operating conditions. In addition, there are other operating conditions, and the relevant principles will not be stated here one by one.
[0046] Embodiment 2
[0047] In this embodiment, the first three-way valve 24 in the first embodiment is replaced by a first two-way valve 28 and a second two-way valve 29. The first two-way valve 28 is connected in series in the indoor refrigeration circulation pipeline 1 and is located between the compressor 8 and the outdoor condenser 9. The second two-way valve 29 is connected in series in the heat pump circulation pipeline 3 and is located upstream of the indoor condenser 13. The inlet of the heat pump circulation pipeline 3 is connected to the indoor refrigeration circulation pipeline 1 between the compressor 8 and the first two-way valve 28; the second three-way valve 25 is replaced by a third two-way valve 30 and a fourth two-way valve 31. The third two-way valve 30 is connected in series in the motor electronic control circulation pipeline 5 and is located between the second circulation pump 27 and the second heat exchanger 14. The fourth two-way valve 31 is connected in series in the heat dissipation circulation pipeline 6 and is located upstream of the radiator 20. The inlet of the heat dissipation circulation pipeline 6 is connected to the motor electronic control circulation pipeline 5 between the second circulation pump 27 and the third two-way valve 30.
[0048] By switching the first two-way valve 28, the second two-way valve 29, the third two-way valve 30, and the fourth two-way valve 31, the circulation pipelines can be turned on and off, thereby realizing the operation of various working conditions in Example 1, and the control method of the relevant components will not be described here.
[0049] Similarly, the function of the four-way valve 7 can also be achieved by connecting multiple two-way valves or three-way valves and related pipelines.
[0050] The above embodiments are merely illustrative of the design principles and uses of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.
Claims
1. An integrated thermal management system with a heat pump, comprising an indoor refrigeration cycle pipeline (1), a compressor (8), an outdoor condenser (9), an indoor evaporator (10), and a gas-liquid separator (11), characterized in that: It also includes a battery cooling circulation pipeline (2), a heat pump circulation pipeline (3), a battery and warm air circulation pipeline (4), a motor electronic control circulation pipeline (5), a heat dissipation circulation pipeline (6), a four-way valve (7), a first heat exchanger (12), an indoor condenser (13), a second heat exchanger (14), a battery (15), a heater (16), an indoor warm air core (17), a motor (18), a controller (19), a radiator (20), a first expansion valve (21), a second expansion valve (22), a third expansion valve (23), a first three-way valve (24), a second three-way valve (25), a first circulation pump (26), and a second circulation pump (27); The compressor (8), the first three-way valve (24), the outdoor condenser (9), the second expansion valve (22), the indoor evaporator (10), and the gas-liquid separator (11) are sequentially connected in series in the indoor refrigeration circulation pipeline (1); the third expansion valve (23) and the first heat exchanger (12) are sequentially connected in series in the battery cooling circulation pipeline (2); the indoor condenser (13), the first expansion valve (21), and the second heat exchanger (14) are sequentially connected in series in the heat pump circulation pipeline (3); the two ports of the first three-way valve (24) are respectively connected to the indoor refrigeration circulation pipeline (1). The third port of the first three-way valve (24) 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 evaporator (10) and the indoor refrigeration circulation pipeline (1) between the gas-liquid separator (11); the inlet of the battery cooling circulation pipeline (2) is connected to the outdoor condenser (9) and the indoor refrigeration circulation pipeline (1) between the second expansion valve (22), and the outlet of the battery cooling circulation pipeline (2) is connected to the indoor refrigeration circulation pipeline (1) between the indoor evaporator (20) and the gas-liquid separator (11); The first circulation pump (26), the four-way valve (27), the indoor heating core (17), the first heat exchanger (12), the battery (15), and the heater (16) are sequentially connected in series in the battery and heating circulation pipeline (4); the second circulation pump (27), the second three-way valve (25), the second heat exchanger (14), the four-way valve (7), the motor (18), and the controller (19) are sequentially connected in series in the motor electronic control circulation pipeline (5); and the radiator (20) is serially connected in the heat dissipation circulation pipeline (6); Two ports of the three-way valve (25) are respectively connected to the motor electronic control circulation pipeline (5); the third port of the second three-way valve (25) is connected to the inlet of the heat dissipation circulation pipeline (6); the outlet of the heat dissipation circulation pipeline (6) is connected to the motor electronic control circulation pipeline (5) between the four-way valve (7) and the second heat exchanger (14); two ports of the four-way valve (7) are connected to the battery and the warm air circulation pipeline (4); the other two ports of the four-way valve (7) are connected to the motor electronic control circulation pipeline (5).
2. The integrated thermal management system with a heat pump according to claim 1, characterized in that The heater (16) is a PTC heater, and the first heat exchanger (12) and the second heat exchanger (14) are both double-channel plate heat exchangers.
3. The integrated thermal management system with a heat pump according to claim 1, characterized in that The first three-way valve (24) and the second three-way valve (25) are both two-position three-way valves.
4. The integrated thermal management system with a heat pump according to claim 1, characterized in that The first expansion valve (21) is a thermal expansion valve or an electronic expansion valve, the second expansion valve (22) is a thermal expansion valve or an electronic expansion valve, and the third expansion valve (23) is an electronic expansion valve.
5. The integrated thermal management system with a heat pump according to claim 1, characterized in that The third expansion valve (23) is a thermal expansion valve, and the integrated thermal management system further comprises a solenoid valve, which is connected in series in the battery cooling circulation pipeline (2) and is located upstream of the third expansion valve (23).
6. The integrated thermal management system with a heat pump according to claim 1, characterized in that The motor (18) is a driving motor, and the controller (19) is a motor controller.
7. The integrated thermal management system with a heat pump according to claim 1, characterized in that It also includes a generator, which is connected in series in the motor electronic control circulation pipeline (5) and is located between the motor (18) and the controller (19).
8. The integrated thermal management system with a heat pump according to claim 1, characterized in that The first three-way valve (24) is replaced by a first two-way valve (28) and a second two-way valve (29); the first two-way valve (28) is connected in series to the indoor refrigeration circulation pipeline (1) and is located between the compressor (8) and the outdoor condenser (9); the second two-way valve (29) is connected in series to the heat pump circulation pipeline (3) and is located upstream of the indoor condenser (13); the inlet of the heat pump circulation pipeline (3) is connected to the indoor refrigeration circulation pipeline (1) between the compressor (8) and the first two-way valve (28); The two-way and three-way valves (25) are replaced by a third two-way valve (30) and a fourth two-way valve (31); the third two-way valve (30) is connected in series to the motor-controlled circulation pipeline (5) and is located between the second circulation pump (27) and the second heat exchanger (14); the fourth two-way valve (31) is connected in series to the heat dissipation circulation pipeline (6) and is located upstream of the radiator (20); the inlet of the heat dissipation circulation pipeline (6) is connected to the motor-controlled circulation pipeline (5) between the second circulation pump (27) and the third two-way valve (30).
9. The integrated thermal management system with a heat pump according to claim 1, characterized in that The four-way valve (7) is replaced by a plurality of three-way valves or two-way valves.