Thermal management system and vehicle
By designing a thermal management system with high integration and compact layout, the cooperation of refrigerant side components and cooling medium side components is used to solve the problems of new refrigerant safety and thermal management requirements, and the effect of high safety and rich thermal management mode is achieved.
Patent Information
- Application Number
- CN202421676873.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-15
AI Technical Summary
In the prior art, refrigerants such as R1234yf may be banned due to difficulty in degradation and permanent damage to microorganisms. New refrigerants such as R290 have excellent thermal performance but high combustibility, making them difficult to meet safety needs.
A thermal management system is proposed, including a refrigerant-side assembly and a cooling medium-side assembly. Through the coordination of valves such as nine-way valves, first three-way valves and second three-way valves, a high degree of integration and compact arrangement between the refrigerant and the cooling medium is achieved, away from the passenger compartment to improve safety, and a rich thermal management mode is realized through the refrigerant medium flow path.
It improves the safety of the system, meets the use needs of new refrigerants, and through high integration and compact layout, a rich thermal management mode is achieved, improving the overall performance of the system.
Smart Images
Figure CN222727764U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to a thermal management system and a vehicle. Background Art
[0002] In related technologies, R1234yf is gradually being promoted as a refrigerant to replace R134a, replacing traditional refrigerants that can cause greenhouse effects. However, with the promulgation of regulations banning perfluoroalkyl substances and polyfluoroalkyl substances (such as the ban on PFAS perfluoro compounds in Europe, the United States, the United Kingdom and Japan), refrigerants such as R1234yf may be banned because they are difficult to degrade and may cause permanent damage to microorganisms. New refrigerants including R290 may become alternatives to the new generation of refrigerants.
[0003] However, although R290 refrigerant has excellent thermal performance, it is highly flammable and difficult to meet safety requirements. Utility Model Content
[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a thermal management system, which has higher safety and is suitable for new refrigerants.
[0005] The present application further proposes a vehicle adopting the above thermal management system.
[0006] In the first aspect, the present application proposes a thermal management system, including: a refrigerant side component, a cooling medium side component, a nine-way valve, a first three-way valve and a second three-way valve, the refrigerant side component has a condenser and an evaporator, the cooling medium side component includes: a heating core, a cooling core, a cold plate and a powertrain cooling component, the first flow path and the second flow path of the heating core are both connected to the condenser, the third flow path and the fourth flow path of the cooling core are both connected to the evaporator, the nine-way valve has a first interface to a ninth interface, the first interface is connected to the first flow path, the second interface is connected to the second flow path, the third interface is connected to the third flow path, and the fourth The interface is connected to the fourth flow path; the fifth interface is connected to the fifth flow path of the powertrain cooling component, the sixth interface is connected to the sixth flow path of the powertrain cooling component, the seventh interface is connected to the seventh flow path of the cold plate, and the eighth interface is connected to the eighth flow path of the cold plate. The first three-way valve is arranged on the first flow path, and the first port of the first three-way valve is connected to the condenser, the second port is connected to the first interface, and the third port is connected to the heating core. The second three-way valve is arranged on the third flow path, and the fourth port of the second three-way valve is connected to the evaporator, the fifth port is connected to the third interface, and the sixth port is connected to the cooling core.
[0007] According to the thermal management system of the embodiment of the present application, on the one hand, the refrigerant side components can be arranged away from the passenger compartment to improve system safety and meet the use requirements of new refrigerants. On the other hand, it has a higher degree of integration, a compact layout, and can achieve a rich thermal management mode through the refrigerant medium flow path.
[0008] According to some embodiments of the present application, a high-pressure heater is further provided in the first flow path, and the high-pressure heater is located between the first three-way valve and the condenser. A first water pump is provided in the second flow path, and a second water pump is provided in the fourth flow path.
[0009] In some embodiments, the cold plate further has a ninth flow path connected in parallel with the seventh flow path, one end of the ninth flow path is connected to the cold plate, and the other end of the ninth flow path is connected to the eighth interface.
[0010] Furthermore, a third water pump and a one-way valve are provided in the ninth flow path.
[0011] According to some embodiments of the present application, the thermal management system also includes: a third three-way valve, the fifth flow path includes: a first branch and a second branch, the seventh port of the third three-way valve is connected to the powertrain cooling component, the eighth port of the third three-way valve is connected to the first branch, the ninth port of the third three-way valve is connected to the second branch, and the other ends of the first branch and the second branch are both connected to the fifth interface.
[0012] Furthermore, a front-end radiator is arranged in the second branch.
[0013] Furthermore, the thermal management system further includes: a tenth flow path, one end of the tenth flow path is connected to the ninth interface, and the other end of the fourth flow path is connected to the front-end radiator.
[0014] In some embodiments, the refrigerant side component also includes: a compressor and a heat exchanger, the compressor outlet of the compressor, the condenser, the high-pressure refrigerant inlet of the heat exchanger, the high-pressure refrigerant outlet, the evaporator, the low-pressure refrigerant inlet, the low-pressure refrigerant outlet, and the compressor inlet are connected in sequence.
[0015] Furthermore, the heat exchanger has a high-pressure refrigerant pipeline and a low-pressure refrigerant pipeline, and one of the high-pressure refrigerant pipeline and the low-pressure refrigerant pipeline is constructed as a coaxial tube or a capillary tube.
[0016] In a second aspect, an embodiment of the present application provides a vehicle, including: the thermal management system described in the above embodiment.
[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 is a structural diagram of a thermal management system according to an embodiment of the present application;
[0020] Figure 2-Figure 7 It is a flow path diagram of the nine-way valve in six working modes of the thermal management system according to an embodiment of the present application.
[0021] Reference numerals:
[0022] Thermal management system 100,
[0023] Refrigerant side components 10, condenser 11, evaporator 12, compressor 13, heat exchanger 14, electronic expansion valve 15, liquid storage tank 16,
[0024] Cooling medium side component 20, heating core 21, cooling core 22, cold plate 23, powertrain cooling element 24, high-pressure heater 25, first water pump 261, second water pump 262, third water pump 263, check valve 27, front end radiator 28, electronic fan 291, blower 292,
[0025] Nine-way valve 30, first interface 31, second interface 32, third interface 33, fourth interface 34, fifth interface 35, sixth interface 36, seventh interface 37, eighth interface 38, ninth interface 39,
[0026] The first three-way valve 40 has a first port 41, a second port 42, and a third port 43.
[0027] The second three-way valve 50, the fourth port 51, the fifth port 52, the sixth port 53,
[0028] The third three-way valve 60, the seventh port 61, the eighth port 62, the ninth port 63,
[0029] The first flow path 101 , the second flow path 102 , the third flow path 103 , the fourth flow path 104 , the fifth flow path 105 , the first branch path 1051 , the second branch path 1052 , the sixth flow path 106 , the seventh flow path 107 , the eighth flow path 108 , the ninth flow path 109 , and the tenth flow path 110 . DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0031] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.
[0032] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.
[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.
[0035] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.
[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0037] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.
[0038] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0039] The term "plurality" used in the present application refers to two or more (including two).
[0040] See also Figure 2-Figure 7 , the six working modes of the thermal management system 100 of the embodiment of the present application are specifically described.
[0041] First, the interface connection relationship of the nine-way valve 30 in the six working modes is as follows:
[0042] Mode 1: the first interface 31 is connected to the sixth interface 36, the second interface 32 is connected to the fifth interface 35, the third interface 33 is connected to the eighth interface 38, the fourth interface 34 and the seventh interface 37 are connected, and the ninth interface 39 is closed;
[0043] Mode 2: the first interface 31 is connected to the eighth interface 38, the second interface 32 is connected to the fifth interface 35, the third interface 33 is connected to the sixth interface 36, the fourth interface 34 is connected to the seventh interface 37, and the ninth interface 39 is closed;
[0044] Mode 3: the first interface 31 is connected to the eighth interface 38, the second interface 32 is connected to the fifth interface 35, the third interface 33 is connected to the ninth interface 39, the fourth interface 34 is connected to the seventh interface 37, and the sixth interface 36 is closed;
[0045] Mode 4: the first interface 31 is connected to the eighth interface 38, the second interface 32 is connected to the seventh interface 37, the third interface 33 is connected to the sixth interface 36, the fourth interface 34 is connected to the fifth interface 35, and the ninth interface 39 is closed;
[0046] Mode 5: the first interface 31 is connected to the eighth interface 38, the second interface 32 is connected to the seventh interface 37, the third interface 33 is connected to the ninth interface 39, the fourth interface 34 is connected to the fifth interface 35, and the sixth interface 36 is closed;
[0047] Mode six: the first interface 31 is connected to the ninth interface 39 , the second interface 32 is connected to the fifth interface 35 , the third interface 33 is connected to the eighth interface 38 , the fourth interface 34 is connected to the seventh interface 37 , and the sixth interface 36 is closed.
[0048] First, the working process of the refrigerant side component 10 is that the refrigerant enters the compressor 13, the cooling medium can be heated by the condenser 11, and after passing through the liquid storage tank 16, it enters the heat exchanger 14, and the low-pressure side refrigerant and the high-pressure side refrigerant in the heat exchanger 14 exchange heat, and after throttling through the electronic expansion valve 15, it enters the evaporator 12, and the cooling medium can be cooled in the evaporator 12, and finally returns to the compressor 13 to complete the refrigerant circuit cycle.
[0049] Furthermore, in Modes 1 to 6, the refrigerant side component 10 of the thermal management system 100 of the present application can achieve at least the following 23 functions.
[0050] The cold plate 23 refers to a structural component for cooling the battery, the powertrain cooling component 24 refers to a structural component for cooling the powertrain, and the high-voltage heater 25 can achieve auxiliary heating.
[0051] Mode 1 can achieve the following seven functions:
[0052] 1. Realization of passenger compartment cooling and powertrain heat dissipation functions: in the nine-way valve 30 mode, the second three-way valve 50 closes the fifth port 52 and opens the fourth and sixth ports 53; the first three-way valve 40 closes the third port 43 and opens the first port 41 and the second port 42; the third three-way valve 60 closes the eighth port 62 and opens the seventh port 61 and the ninth port 63. The compressor 13 starts to complete the refrigerant circuit circulation, and the first water pump 261 is turned on to provide water circulation power to send heat to the front radiator 28. At the same time, the heat generated by the powertrain (which may include an electric motor, a reducer, and a motor controller, etc., and the powertrain cooling component 24 may include: a cooling channel of the motor housing, a cooling channel of the reducer housing, and a cooling module of the motor controller) is sent to the front radiator 28 through the powertrain cooling component 24. The heat is dissipated to the external environment through the operation of the electronic fan 291, and finally the water circulates to the condenser 11 to continue to absorb heat; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cooling core 22, and the cold air is sent into the passenger compartment with the assistance of the blower 292 to absorb the indoor heat. Finally, the water circulates to the evaporator 12 for cooling again to achieve a cooling effect for the passenger compartment.
[0053] 2. Realization of battery cooling and powertrain heat dissipation function: In the nine-way valve 30 mode, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 starts to complete the refrigerant circuit circulation; the first water pump 261 is turned on to provide water circulation power, and the heat is sent to the front radiator 28. At the same time, the heat generated by the powertrain is sent to the front radiator 28 through the powertrain cooling element 24, and the heat is dissipated to the external environment through the electronic fan 291. Finally, the water circulates to the condenser 11 to continue to absorb heat; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cold plate 23 to cool it down. Finally, the water circulates to the evaporator 12 for cooling again, so as to achieve the power battery cooling effect.
[0054] 3. Realization of the dual cooling of the passenger compartment and the battery and the heat dissipation of the powertrain at the same time: the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 is started to complete the refrigerant circuit circulation; the first water pump 261 is turned on to provide water circulation power, and the heat is sent to the front radiator 28. At the same time, the heat generated by the powertrain is sent to the front radiator 28 through the powertrain cooling element 24, and the heat is dissipated to the external environment through the operation of the electronic fan 291. Finally, the water circulates to the condenser 11 to continue to absorb heat; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cooling core 22 and the cold plate 23 respectively, and the flow rate is reasonably allocated to meet the different cooling requirements of the power battery and the passenger compartment. At the same time, the third water pump 263 and the one-way valve 27 are opened to maintain the internal temperature of the battery without affecting the cooling effect of the passenger compartment due to the water temperature at the battery outlet. Finally, the water circulates to the evaporator 12 for cooling again, achieving dual cooling effects for the passenger compartment and the power battery.
[0055] 4. Realization of passenger compartment cooling and dehumidification and powertrain heat dissipation functions: in the nine-way valve 30 mode, the second three-way valve 50 closes the second port 42, opens the first port 41 and the third port 43, the first three-way valve 40 opens the first port 41, the second port 42 and the third port 43, the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 starts to complete the refrigerant circuit circulation; the first water pump 261 is turned on to provide water circulation power, and part of the heat is sent to the front radiator 28. At the same time, the heat generated by the power assembly is sent to the front radiator 28 through the power assembly cooling part 24, and the heat is dissipated to the external environment through the operation of the electronic fan 291. Finally, the water circulates to the condenser 11 to continue to absorb heat; another part of the heat is sent to the heating core 21, and the flow of the heating core 21 is adjusted by the first three-way valve 40 to control the temperature to achieve the purpose of dehumidification; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cooling core 22, and the cold air is sent into the passenger compartment with the assistance of the blower 292 to absorb the indoor heat. Finally, the water circulates to the evaporator 12 for cooling again, thereby realizing refrigeration and dehumidification of the passenger compartment.
[0056] 5. Realization of passenger compartment cooling and dehumidification, battery cooling and powertrain heat dissipation functions: the nine-way valve 30 is in mode 1, the second three-way valve 50 opens the fifth port 52, the sixth port 53 and the seventh port 61, the first three-way valve 40 opens the first port 41, the second port 42 and the third port 43, the third three-way valve 60 closes the eighth port 62, and opens the seventh port 61 and the ninth port 63. The compressor 13 starts to complete the refrigerant circuit circulation; the first water pump 261 is turned on to provide water circulation power, and part of the heat is sent to the front radiator 28. At the same time, the heat generated by the powertrain is sent to the front radiator 28 through the powertrain cooling component 24, and the heat is dissipated to the external environment through the operation of the electronic fan 291. Finally, the water circulates to the condenser 11 to continue to absorb heat; another part of the heat is sent to the heating core 21, and the flow of the heating core 21 is adjusted by the first three-way valve 40 to control the temperature to achieve the purpose of dehumidification; the second water pump 262 is turned on to provide water circulation power, and part of the cooling medium cooled by the evaporator 12 is sent to the cooling core 22, and the cold air is sent into the passenger compartment with the assistance of the blower 292 to absorb the indoor heat, thereby realizing refrigeration and dehumidification of the passenger compartment; the other part is sent to the power battery, and the water flow of the power battery is adjusted by the second three-way valve 50 to adjust the battery inlet temperature to achieve battery cooling, and finally the water circulates to the evaporator 12 for cooling again.
[0057] 6. Realization of passive heat dissipation of powertrain: In the nine-way valve 30 mode, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 is not started; the first water pump 261 is turned on to provide water circulation power, and the heat of the powertrain is sent to the front radiator 28, and the electronic fan 291 is used to dissipate the heat to the external environment. Finally, the water circulates through the condenser 11 and returns to the powertrain for cooling again, completing the passive heat dissipation of the powertrain.
[0058] 7. Fast defrosting function of the front radiator 28: In the nine-way valve 30 mode, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 does not start; the first water pump 261 is turned on to provide water circulation power, and the heat of the power assembly is sent to the front radiator 28. The electronic fan 291 works to dissipate the heat for defrosting the front radiator 28. Finally, the water circulates through the condenser 11 and returns to the power assembly for cooling again, completing the refrigeration cycle.
[0059] Mode 2 can achieve the following two functions:
[0060] 8. Realization of passive cooling function of power battery and powertrain: In mode 2 of the nine-way valve 30, the second three-way valve 50 closes the third port 43, opens the first port 41 and the second port 42, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the eighth port 62. The compressor 13 is not started; the second water pump 262 is turned on, the cooling medium heated in the powertrain passes through the front radiator 28, and dissipates heat to the outside with the assistance of the electronic fan 291, then flows through the resistance condenser 11, the cooled cooling medium enters the power battery to cool it, then passes through the evaporator 12 back to the powertrain, and is sent to the front radiator 28 again, completing the passive cooling of the power battery and the powertrain.
[0061] 9. The power battery heating and powertrain waste heat recovery functions are realized: in the second mode of the nine-way valve 30, the second three-way valve 50 closes the third port 43, opens the first port 41 and the second port 42, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the eighth port 62, opens the seventh port 61 and the ninth port 63. The compressor 13 does not start; the second water pump 262 is turned on, and the cooling medium heated in the powertrain passes through the front radiator 28, which serves as a resistance element, and the electronic fan 291 does not work, and then flows through the resistance element condenser 11, sends the powertrain heat to the power battery to heat it, and then passes through the resistance element evaporator 12 back to the powertrain, continues to recover the powertrain heat, and completes the powertrain waste heat recovery to heat the power battery.
[0062] Mode 3 can achieve one of the following functions:
[0063] 10. Realization of the passive cooling function of the battery: In the third mode of the nine-way valve 30, the powertrain circuit does not work, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the ninth port 63, opens the seventh port 61 and the eighth port 62. The compressor 13 does not start; the second water pump 262 is turned on, and the cooling medium in the power battery flows through the evaporator 12 to the front radiator 28, dissipates heat to the outside with the assistance of the electronic fan 291, and then returns to the inside of the power battery through the condenser 11 to continue absorbing heat, completing the passive heat dissipation of the battery.
[0064] Mode 4 can achieve the following eight functions:
[0065] 11. Recovery of powertrain waste heat and realization of passenger compartment heating function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fifth port 52 and the fourth port 51, the first three-way valve 40 closes the second port 42, opens the first port 41 and the third port 43, and the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 is started to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the nine-way valve 30 to recover the heat inside the powertrain and return to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the heat is sent to the heating core 21. Under the action of the blower 292, the hot air is sent into the room to complete the heating of the passenger compartment.
[0066] 12. Recovery of powertrain waste heat and realization of power battery heating function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the ninth port 63, opens the seventh port 61 and the eighth port 62. The compressor 13 starts to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the nine-way valve 30 to recover the heat inside the powertrain and return to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the cold plate 23 through the first three-way valve 40 and the nine-way valve 30 to complete the power battery heating.
[0067] 13. Recovery of powertrain waste heat, realization of dual heating function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 opens the first port 41, the second port 42, and the third port 43, the third three-way valve 60 closes the ninth port 63, and opens the seventh port 61 and the eighth port 62. The compressor 13 is started to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the nine-way valve 30 to recover the heat inside the powertrain and return to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the hot air is sent into the room under the action of the blower 292 to complete the heating of the passenger compartment, and the other part of the heat is sent to the power battery through the nine-way valve 30 to heat the power battery.
[0068] 14. Recovery of powertrain waste heat, realization of heating and dehumidification functions: In mode 4 of the nine-way valve 30, the second three-way valve 50 opens the fourth port 51, the fifth port 52 and the sixth port 53, the first three-way valve 40 closes the fifth port 52, opens the fourth port 51 and the sixth port 53, the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 is started to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 passes through the second three-way valve 50, and a part of the cold is sent to the cooling core 22, and the cold air is sent into the room under the action of the blower 292 to complete the refrigeration of the passenger compartment; the other part of the cold is sent to the powertrain cooling element 24 through the nine-way valve 30 to complete the waste heat recovery and return to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the heat is sent to the heating core 21. The hot air is sent into the room under the action of the blower 292 to complete the heating and dehumidification of the passenger compartment.
[0069] 15. The powertrain waste heat recovery function is realized: in the mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the second port 42, opens the first port 41 and the third port 43, and the third three-way valve 60 closes the ninth port 63, opens the seventh port 61 and the eighth port 62. The compressor 13 is not started; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the nine-way valve 30 to recover the heat inside the powertrain, and returns to the evaporator 12 through the radiator 28 at the front end of the resistance element. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the heat is sent to the heating core 21. Under the action of the blower 292, the hot air is sent into the room, and the motor waste heat is used to heat the passenger compartment.
[0070] 16. Heat pump and powertrain waste heat recovery, passenger compartment heating function is realized: in mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the second port 42, opens the first port 41 and the third port 43, the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 is started to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and part of the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the sixth interface 36 of the nine-way valve 30 to recover the heat inside the powertrain, and the other part is sent to the front radiator 28 through the ninth interface 39 of the nine-way valve 30, absorbs heat from the environment, and converges back to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the heat is sent to the heating core 21. The hot air is sent into the room under the action of the blower 292 to complete the heating of the passenger compartment.
[0071] 17. Heat pump and powertrain waste heat recovery, power battery heating function is realized: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fourth port 51 and the fifth port 52, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 is started to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and a part of the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the sixth interface 36 of the nine-way valve 30 to recover the heat inside the powertrain, and the other part is sent to the front radiator 28 through the ninth interface 39 of the nine-way valve 30, absorbs heat from the environment, and converges back to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the cold plate 23 through the first three-way valve 40 and the nine-way valve 30 to complete the power battery heating.
[0072] 18. Heat pump and powertrain waste heat recovery, dual heating function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the first port 41, opens the third port 43 and the second port 42, and the first three-way valve 40 opens the first port 41, the second port 42, and the third port 43; the third three-way valve 60 closes the ninth port 63, and opens the eighth port 62 and the seventh port 61. The compressor 13 starts to complete the refrigerant circuit circulation; the second water pump 262 is turned on, and part of the cooling medium cooled by the evaporator 12 enters the powertrain cooling element 24 through the sixth interface 36 of the nine-way valve 30 to recover the heat inside the powertrain, and the other part is sent to the front radiator 28 through the ninth interface 39 of the nine-way valve 30, absorbs heat from the environment, and converges back to the evaporator 12. Turn on the first water pump 261, and part of the heat of the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40. The hot air is sent into the room under the action of the blower 292 to complete the heating of the passenger compartment. The other part of the heat is sent to the power battery through the nine-way valve 30 to heat the power battery.
[0073] Mode 5 can achieve the following three functions:
[0074] 19. Implementation of passenger compartment heating without powertrain waste heat recovery function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fifth port 52 and the fourth port 51, the first three-way valve 40 closes the second port 42, opens the first port 41 and the third port 43, and the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 is started; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 directly enters the front radiator 28 through the nine-way valve 30 to absorb the heat from the external environment and returns to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the heat is sent to the heating core 21. The hot air is sent into the room under the action of the blower 292, and the passenger compartment is heated.
[0075] 20. Implementation of power battery heating function without powertrain waste heat recovery function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fifth port 52 and the fourth port 51, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, the third three-way valve 60 closes the ninth port 63, opens the seventh port 61 and the eighth port 62. The compressor 13 starts; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 directly enters the front radiator 28 through the nine-way valve 30 to absorb the heat from the external environment and returns to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the cold plate 23 through the first three-way valve 40 and the nine-way valve 30, completing the power battery heating.
[0076] 21. Dual heating function is realized without powertrain waste heat recovery function: In mode 4 of the nine-way valve 30, the second three-way valve 50 closes the sixth port 53, opens the fifth port 52 and the fourth port 51, and the first three-way valve 40 opens the first port 41, the second port 42, and the third port 43; the third three-way valve 60 closes the ninth port 63, and opens the seventh port 61 and the eighth port 62. The compressor 13 is started; the second water pump 262 is turned on, and the cooling medium cooled by the evaporator 12 directly enters the front radiator 28 through the nine-way valve 30 to absorb the heat of the external environment and returns to the evaporator 12. The first water pump 261 is turned on, and the cooling medium heated by the condenser 11 enters the heating core 21 through the first three-way valve 40, and the hot air is sent into the room under the action of the blower 292 to complete the heating of the passenger compartment, and the other part of the heat is sent to the power battery through the nine-way valve 30 to heat the power battery.
[0077] Mode 6 can achieve the following two functions:
[0078] 22. Passenger compartment cooling without powertrain cooling function: In mode 6 of the nine-way valve 30, the second three-way valve 50 closes the fifth port 52, opens the fourth port 51 and the sixth port 53, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the ninth port 63, opens the seventh port 61 and the eighth port 62. The compressor 13 starts to complete the refrigerant circuit cycle; the first water pump 261 is turned on to provide water circulation power, and the heat is sent to the front radiator 28, without passing through the powertrain cooling element 24, and the heat is dissipated to the external environment through the electronic fan 291, and finally the water circulates to the condenser 11 to continue to absorb heat; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cooling core 22, and the cold air is sent into the passenger compartment to absorb the indoor heat with the help of the blower 292, and finally the water circulates to the evaporator 12 for cooling again, so as to achieve the passenger compartment cooling effect.
[0079] 23. Implementation of dual cooling without powertrain heat dissipation function: In the nine-way valve 30 mode, the second three-way valve 50 opens the fourth port 51, the fifth port 52 and the sixth port 53, the first three-way valve 40 closes the third port 43, opens the first port 41 and the second port 42, and the third three-way valve 60 closes the ninth port 63, opens the eighth port 62 and the seventh port 61. The compressor 13 starts to complete the refrigerant circuit circulation; the first water pump 261 is turned on to provide water circulation power, and the heat is sent to the front radiator 28. The heat is dissipated to the external environment through the electronic fan 291 without passing through the powertrain cooling component 24. Finally, the water is circulated to the condenser 11 to continue to absorb heat; the second water pump 262 is turned on to provide water circulation power, and the cooling medium cooled by the evaporator 12 is sent to the cooling core 22 and the cold plate 23 respectively through the second three-way valve 50. The flow rate is reasonably allocated to meet the different cooling requirements of the power battery and the passenger compartment. At the same time, the third water pump 263 and the one-way valve 27 are turned on to maintain the internal temperature of the battery without affecting the cooling effect of the passenger compartment due to the battery outlet water temperature. Finally, the water is circulated to the evaporator 12 for cooling again, so as to achieve the dual cooling effect of the passenger compartment and the power battery.
[0080] Reference below Figure 1-Figure 7 A thermal management system 100 and a vehicle according to an embodiment of the present application are described.
[0081] like Figures 1 to 7As shown, the present application proposes a thermal management system 100, including: a refrigerant side component 10, a cooling medium side component 20, a nine-way valve 30, a first three-way valve 40 and a second three-way valve 50, the refrigerant side component 10 has a condenser 11 and an evaporator 12, the cooling medium side component 20 includes: a heating core 21, a cooling core 22, a cold plate 23 and a powertrain cooling member 24, the first flow path 101 and the second flow path 102 of the heating core 21 are both connected to the condenser 11, the third flow path 103 and the fourth flow path 104 of the cooling core 22 are both connected to the evaporator 12, the nine-way valve 30 has a first interface 31 to a ninth interface 39, the first interface 31 is connected to the first flow path 101, the second interface 32 is connected to the second flow path 102, and the third interface 33 is connected to the third flow path 103 The fourth interface 34 is connected to the fourth flow path 104; the fifth interface 35 is connected to the fifth flow path 105 of the powertrain cooling component 24, the sixth interface 36 is connected to the sixth flow path 106 of the powertrain cooling component 24, the seventh interface 37 is connected to the seventh flow path 107 of the cold plate 23, and the eighth interface 38 is connected to the eighth flow path 108 of the cold plate 23. The first three-way valve 40 is arranged on the first flow path 101, and the first port 41 of the first three-way valve 40 is connected to the condenser 11, the second port 42 is connected to the first interface 31, and the third port 43 is connected to the heating core 21. The second three-way valve 50 is arranged on the third flow path 103, and the fourth port 51 of the second three-way valve 50 is connected to the evaporator 12, the fifth port 52 is connected to the third interface 33, and the sixth port 53 is connected to the cooling core 22.
[0082] Specifically, the refrigerant side component 10 constitutes a refrigerant side loop, and the cooling medium side component 20 constitutes a cooling medium side loop. The refrigerant side loop can heat the cooling medium through the condenser 11, and the heated cooling medium can participate in the temperature increase regulation process of the refrigerant side component 10, such as: heating of the battery, heating of the passenger compartment, etc. The cooling of the cooling medium can also be achieved through the evaporator 12, and the cooling medium can participate in the temperature decrease regulation process of the refrigerant side component 10, such as: cooling of the passenger compartment, cooling of the battery, cooling of the powertrain, etc., and the heat exchange between the refrigerant and the cooling medium can further realize the regulation of the internal temperature of the passenger compartment. During the temperature regulation process of the entire passenger compartment, the refrigerant no longer enters the side of the passenger compartment, so that the refrigerant is away from the passenger compartment, which can improve the system safety and enable the thermal management system 100 of the embodiment of the present application to meet the use requirements of the new refrigerant.
[0083] It should be pointed out that the heating core 21 can cooperate with the blower 292 to achieve heating of the passenger compartment, the cooling core 22 can cooperate with the blower 292 to achieve cooling of the passenger compartment, the high-pressure heater 25 can achieve auxiliary heating, and the front end radiator 28 can achieve heat dissipation of the powertrain.
[0084] It can be understood that the present application is further provided with a nine-way valve 30, a first three-way valve 40 and a second three-way valve 50. The refrigerant side component 10 cooperates with the nine-way valve 30, the first three-way valve 40 and the second three-way valve 50 to realize the above-mentioned mode one, mode two and mode four. In the three modes, there are a total of 18 functions, which can not only realize the high integration of the cooling medium side component 20, but also enrich the use functions and improve the use experience.
[0085] According to the thermal management system 100 of the embodiment of the present application, on the one hand, the refrigerant side component 10 can be arranged away from the passenger compartment to improve system safety and meet the use requirements of new refrigerants. On the other hand, it has a higher degree of integration, a compact layout, and realizes a rich thermal management mode through the cooling medium circuit.
[0086] like Figure 1 As shown, according to some embodiments of the present application, a high-pressure heater 25 is further provided in the first flow path 101, and the high-pressure heater 25 is located between the first three-way valve 40 and the condenser 11, a first water pump 261 is provided in the second flow path 102, and a second water pump 262 is provided in the fourth flow path 104.
[0087] That is to say, the high-pressure heater 25, the heating core 21, the first flow path 101, the second flow path 102 and the first water pump 261 can form a first circuit, which is used for the cooling medium to flow in the heating core 21 to achieve heating of the heating core 21, and the high-pressure heater 25 can achieve auxiliary heating. Of course, in some multi-functional composite modes, the first three-way valve 40 can also be used to allow the cooling medium flowing through the high-pressure heater 25 and the condenser 11 to enter the cold plate 23 to achieve heating of the battery.
[0088] Furthermore, in some embodiments, the cold plate 23 further includes a ninth flow path 109 connected in parallel with the seventh flow path 107 , one end of the ninth flow path 109 is connected to the cold plate 23 , and the other end of the ninth flow path 109 is connected to the eighth interface 38 .
[0089] Specifically, the third water pump 263 and the one-way valve 27 are provided in the ninth flow path 109, and the ninth flow path 109 is opened when the battery is heated. The one-way valve 27 and the third water pump 263 are used to realize the circulation of the cooling medium in the cold plate 23, and the one-way cut-off effect of the one-way valve 27 is used to avoid backflow, thereby improving work safety and reliability.
[0090] like Figures 1 to 7As shown, according to some embodiments of the present application, the thermal management system 100 also includes: a third three-way valve 60, the fifth flow path 105 includes: a first branch 1051 and a second branch 1052, the seventh port 61 of the third three-way valve 60 is connected to the powertrain cooling component 24, the eighth port 62 of the third three-way valve 60 is connected to the first branch 1051, the ninth port 63 of the third three-way valve 60 is connected to the second branch 1052, and the other ends of the first branch 1051 and the second branch 1052 are both connected to the fifth interface 35.
[0091] Therefore, the cooling medium flowing out of the powertrain cooler 24 can choose to flow back to the nine-way valve 30 through the first branch 1051, or choose to flow back to the nine-way valve 30 through the second branch 1052. By setting the first branch 1051 and the second branch 1052, the function of the refrigerant side component 10 can be further enriched and a rich thermal management mode can be achieved.
[0092] Furthermore, a front end radiator 28 is disposed in the second branch 1052 to achieve heat dissipation for the power assembly through the front end radiator 28 .
[0093] See also Figure 1-Figure 7 As shown, the thermal management system 100 further includes: a tenth flow path 110 , one end of the tenth flow path 110 is connected to the ninth interface 39 , and the other end of the tenth flow path 110 is connected to the front end radiator 28 .
[0094] Therefore, by expanding the tenth flow path 110, under the premise of meeting the high integration of the thermal management system 100, the functions of the above-mentioned mode three, mode five and mode six can be further realized, and the usage functions can be further enriched.
[0095] In some embodiments, the refrigerant side component 10 also includes: a compressor 13 and a heat exchanger 14, and the compressor 13 outlet of the compressor 13, the condenser 11, the high-pressure refrigerant inlet of the heat exchanger 14, the high-pressure refrigerant outlet, the evaporator 12, the low-pressure refrigerant inlet, the low-pressure refrigerant outlet, and the compressor 13 inlet are connected in sequence.
[0096] Specifically, the heat exchanger 14 includes a high-pressure refrigerant pipeline and a low-pressure refrigerant pipeline, and one of the high-pressure refrigerant pipeline and the low-pressure refrigerant pipeline is configured as a coaxial tube or a capillary tube.
[0097] That is to say, by setting up the heat exchanger 14, heat exchange can be achieved between the high-temperature and high-pressure refrigerant and the low-temperature and low-pressure refrigerant during the flow of the refrigerant in the refrigerant side circuit, so as to increase the subcooling degree of the refrigerant before throttling and the superheating degree before the compressor 13 sucks air, so as to improve the energy efficiency of the thermal management system 100, reduce the system performance degradation caused by the refrigerant not directly participating in the heat dissipation of the cooling medium side component 20, and ensure that the thermal management system 100 has a good temperature regulation effect and temperature regulation efficiency.
[0098] In a second aspect, an embodiment of the present application provides a vehicle, including: the thermal management system 100 in the above embodiment.
[0099] The thermal management system 100 and other components and operations of the vehicle according to the embodiment of the present application are well known to those skilled in the art and will not be described in detail here.
[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A thermal management system, characterized in that: include: A refrigerant side component (10), wherein the refrigerant side component (10) comprises a condenser (11) and an evaporator (12); A cooling medium side component (20), the cooling medium side component (20) comprising: a heating core (21), a cooling core (22), a cold plate (23) and a powertrain cooling element (24), the first flow path (101) and the second flow path (102) of the heating core (21) being connected to the condenser (11), and the third flow path (103) and the fourth flow path (104) of the cooling core (22) being connected to the evaporator (12); A nine-way valve (30), the nine-way valve (30) having a first interface (31) to a ninth interface (39), the first interface (31) being connected to the first flow path (101), the second interface (32) being connected to the second flow path (102), the third interface (33) being connected to the third flow path (103), and the fourth interface (34) being connected to the fourth flow path (104); the fifth interface (35) being connected to the fifth flow path (105) of the powertrain cooler (24), the sixth interface (36) being connected to the sixth flow path (106) of the powertrain cooler (24), the seventh interface (37) being connected to the seventh flow path (107) of the cold plate (23), and the eighth interface (38) being connected to the eighth flow path (108) of the cold plate (23); a first three-way valve (40), the first three-way valve (40) being arranged in the first flow path (101), and the first port (41) of the first three-way valve (40) being connected to the condenser (11), the second port (42) being connected to the first interface (31), and the third port (43) being connected to the heating core (21); A second three-way valve (50), wherein the second three-way valve (50) is arranged in the third flow path (103), and the fourth port (51) of the second three-way valve (50) is connected to the evaporator (12), the fifth port (52) is connected to the third interface (33), and the sixth port (53) is connected to the cooling core (22).
2. The thermal management system according to claim 1, characterized in that: A high-pressure heater (25) is also provided in the first flow path (101), and the high-pressure heater (25) is located between the first three-way valve (40) and the condenser (11). A first water pump (261) is provided in the second flow path (102), and a second water pump (262) is provided in the fourth flow path (104).
3. The thermal management system according to claim 1, characterized in that: The cold plate (23) also has a ninth flow path (109) connected in parallel with the seventh flow path (107), one end of the ninth flow path (109) is connected to the cold plate (23), and the other end of the ninth flow path (109) is connected to the eighth interface (38).
4. The thermal management system according to claim 3, characterized in that: A third water pump (263) and a one-way valve (27) are provided in the ninth flow path (109).
5. The thermal management system according to claim 1, characterized in that: Also includes: A third three-way valve (60), the fifth flow path (105) comprises: a first branch (1051) and a second branch (1052), the seventh port (61) of the third three-way valve (60) is connected to the powertrain cooling element (24), the eighth port (62) of the third three-way valve (60) is connected to the first branch (1051), the ninth port (63) of the third three-way valve (60) is connected to the second branch (1052), and the other ends of the first branch (1051) and the second branch (1052) are both connected to the fifth interface (35).
6. The thermal management system according to claim 5, characterized in that: A front end radiator (28) is disposed in the second branch (1052).
7. The thermal management system according to claim 6, characterized in that: Also includes: A tenth flow path (110), one end of the tenth flow path (110) is connected to the ninth interface (39), and the other end of the tenth flow path (110) is connected to the front end radiator (28).
8. The thermal management system according to claim 1, characterized in that: The refrigerant side component (10) also includes: a compressor (13) and a heat exchanger (14), wherein the compressor (13) outlet of the compressor (13), the condenser (11), the high-pressure refrigerant inlet of the heat exchanger (14), the high-pressure refrigerant outlet, the evaporator (12), the low-pressure refrigerant inlet, the low-pressure refrigerant outlet, and the compressor (13) inlet are connected in sequence.
9. The thermal management system according to claim 8, characterized in that: The heat exchanger (14) has a high-pressure refrigerant pipeline and a low-pressure refrigerant pipeline, and one of the high-pressure refrigerant pipeline and the low-pressure refrigerant pipeline is constructed as a coaxial tube or a capillary tube.
10. A vehicle, characterized in that: include: The thermal management system according to any one of claims 1 to 9.