Vehicle thermal management system and all-terrain vehicle

Abstract

The utility model discloses a vehicle thermal management system and an all-terrain vehicle, and the vehicle thermal management system comprises a liquid heater, a first water pump, a liquid-liquid exchanger, a warm air exchanger, a power battery assembly, a second water pump, an engine and a first radiator, the liquid heater, the first water pump, the warm air exchanger and a first cavity of the liquid-liquid exchanger are connected in series to form a first circulating water path, and the heat exchange pipeline of the power battery assembly, the second water pump and a second cavity of the liquid-liquid exchanger are connected in series to form a second circulating water path. A heat exchange pipeline of the engine, the first radiator and the liquid heater are connected in series to form a third circulating water path. The vehicle thermal management system has the advantages of being simple in pipeline layout and small in occupied vehicle space.

Description

Technical Field

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

[0002] Winter heating and defrosting and defogging are of great concern to all-terrain vehicle users. This is especially true for fuel-powered, all-electric, or hybrid vehicles in extremely cold weather. When the fuel engine fails to start or the power battery fails to discharge, the vehicle's liquid heating device or PTC heating system becomes inoperative, rendering it unable to meet user needs like winter heating. While related art vehicles utilize liquid heaters to heat the fuel engine or power battery, or directly provide vehicle heating, these thermal management systems suffer from complex piping layouts and occupy a significant amount of vehicle space. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a vehicle thermal management system, which has the advantages of simple pipeline layout and small space occupied in the vehicle.

[0005] The embodiment of the present utility model further provides an all-terrain vehicle.

[0006] The vehicle thermal management system of an embodiment of the present utility model includes a liquid heater, a first water pump, a liquid-liquid exchanger, a warm air exchanger, a power battery assembly, a second water pump, an engine and a first radiator. The liquid heater, the first water pump, the warm air exchanger and the first chamber of the liquid-liquid exchanger are connected in series to form a first circulating water circuit; the heat exchange pipeline of the power battery assembly, the second water pump and the second chamber of the liquid-liquid exchanger are connected in series to form a second circulating water circuit; the heat exchange pipeline of the engine, the first radiator and the liquid heater are connected in series to form a third circulating water circuit.

[0007] According to the vehicle thermal management system of an embodiment of the present invention, the liquid heater can rapidly heat the antifreeze liquid in the first and third circulating water circuits during operation, thereby facilitating heating of the passenger compartment, cockpit, windshield, and other areas with air outlets via the warm air exchanger, and / or heating the engine body, internal water circuits, and engine oil, thereby preventing carbon deposits and exhaust emissions caused by engine idling while the vehicle is parked. Furthermore, by providing a liquid-to-liquid exchanger, heat from the antifreeze liquid in the first and second circulating water circuits can be transferred to the antifreeze liquid in the second circulating water circuit, thereby heating the power battery assembly and effectively ensuring stable discharge of the power battery assembly. Furthermore, the liquid heater heats the power battery assembly via the liquid-to-liquid exchanger, ensuring independent operation of the second circulating water circuit and reducing the total length of the vehicle thermal management system's piping. This simplifies the piping layout of the vehicle thermal management system and occupies minimal space in the vehicle.

[0008] In some embodiments, the vehicle thermal management system also includes a compressor, a pressure switch, a first condenser, a first expansion valve and a cooler. The compressor, the pressure switch, the first condenser, the first expansion valve and the first chamber of the cooler are connected in series in sequence to form a fourth circulating water circuit, and the second chamber of the cooler is connected in series to the second circulating water circuit.

[0009] In some embodiments, the vehicle thermal management system further includes a second expansion valve and an evaporator, and the compressor, the pressure switch, the first condenser, the second expansion valve and the evaporator are sequentially connected in series to form a fifth circulating water circuit.

[0010] In some embodiments, the vehicle thermal management system further includes a motor controller, a motor assembly, a third water pump, an on-board charger, a DCDC converter and a second radiator, and at least one of the motor controller, the motor assembly, the on-board charger and the DCDC converter is connected in series with the third water pump and the second radiator to form a sixth circulating water circuit.

[0011] In some embodiments, the vehicle thermal management system further includes a cooling fan adapted to dissipate heat for each of the first radiator, the second radiator, and the first condenser.

[0012] In some embodiments, the warm air exchanger is further connected in series to the third circulating water circuit;

[0013] The vehicle thermal management system further includes a three-way valve, which is serially connected to the first circulating water line via a first interface and a second interface, and is serially connected to the third circulating water line via the first interface and a third interface.

[0014] In some embodiments, the vehicle thermal management system further includes a fourth water pump, which is connected in series to the second circulating water circuit, and the three-way valve is located between the fourth water pump and the first water pump.

[0015] In some embodiments, an expansion kettle is further connected in series to at least one of the second circulating water circuit, the third circulating water circuit, and the sixth circulating water circuit.

[0016] In some embodiments, the vehicle thermal management system further includes an oil pump and a fuel tank, and the fuel tank, the oil pump, and the liquid heater are sequentially connected in series through an oil pipeline.

[0017] An all-terrain vehicle according to an embodiment of the present invention includes the vehicle thermal management system as described in any one of the above embodiments.

[0018] The technical advantages of the all-terrain vehicle according to the embodiment of the present utility model are the same as the technical advantages of the vehicle thermal management system of the above embodiment, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural layout diagram of a vehicle thermal management system according to an embodiment of the present utility model.

[0020] Reference numerals:

[0021] 1. Liquid heater; 2. First water pump; 3. Liquid-liquid exchanger; 4. Warm air exchanger; 5. Power battery assembly; 6. Second water pump; 7. Engine; 8. First radiator; 9. Compressor; 10. Pressure switch; 11. First condenser; 12. First expansion valve; 13. Cooler; 14. Second expansion valve; 15. Evaporator; 16. Motor controller; 17. Motor assembly; 18. Third water pump; 19. On-board charger; 20. DCDC converter; 21. Second radiator; 22. Cooling fan; 23. Three-way valve; 231. First interface; 232. Second interface; 233. Third interface; 24. Fourth water pump; 25. Expansion kettle. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] The following combination Figure 1 A vehicle thermal management system according to an embodiment of the present invention is described.

[0024] The vehicle thermal management system of this embodiment of the utility model includes a liquid heater 1, a first water pump 2, a liquid-liquid exchanger 3, a warm air exchanger 4, a power battery assembly 5, a second water pump 6, an engine 7, and a first radiator 8. The liquid heater 1, the first water pump 2, the warm air exchanger 4, and the first chamber of the liquid-liquid exchanger 3 are connected in series to form a first circulating water path. The heat exchange piping of the power battery assembly 5, the second water pump 6, and the second chamber of the liquid-liquid exchanger 3 are connected in series to form a second circulating water path. The heat exchange piping of the engine 7, the first radiator 8, and the liquid heater 1 are connected in series to form a third circulating water path.

[0025] According to the vehicle thermal management system of the present invention, when in operation, the liquid heater 1 can rapidly heat the antifreeze liquid in the first and third circulating water circuits, thereby facilitating heating of the passenger compartment, cockpit, windshield, and other areas with air outlets via the warm air exchanger 4, and / or heating the engine 7 body, internal water circuits, and engine oil, thereby preventing carbon deposits and exhaust emissions caused by engine 7 idling while the vehicle is parked. Furthermore, by providing the liquid-liquid exchanger 3, heat from the antifreeze liquid in the first and second circulating water circuits can be transferred to the antifreeze liquid in the second circulating water circuit, thereby heating the power battery assembly 5 and effectively ensuring stable discharge of the power battery assembly 5. Furthermore, the liquid heater 1 heats the power battery assembly 5 via the liquid-liquid exchanger 3, ensuring independent operation of the second circulating water circuit and reducing the total length of the vehicle thermal management system's piping. This simplifies the piping layout of the vehicle thermal management system and occupies minimal space in the vehicle.

[0026] It should be noted that the third circulating water circuit is also connected in series with the first water pump 2 and the liquid-liquid exchanger 3. The first water pump 2 ensures that the coolant circulates in the third circulating water circuit. At the same time, when the liquid heater 1 is working, whether it is heating the first circulating water circuit or the third circulating water circuit, the coolant in the second circulating water circuit can be heated through the liquid-liquid exchanger 3 to achieve heating of the power battery assembly 5, thereby reducing the power consumption of the power battery assembly 5 in winter.

[0027] In addition, the operation of the vehicle thermal management system can be achieved through the Internet of Vehicles or vehicle buttons such as APP, Bluetooth, remote control, etc. The liquid heater 1 is a fuel heater in the relevant technology, and its specific structure is not repeated here. When it is turned on, the internal ignition device works, the ignition device ignites the fuel, and the flame formed by the combustion of the fuel realizes the heating of the coolant in the first circulating water circuit and the third circulating water circuit.

[0028] In some embodiments, as Figure 1As shown, the vehicle thermal management system also includes a compressor 9, a pressure switch 10, a first condenser 11, a first expansion valve 12 and a cooler 13. The compressor 9, the pressure switch 10, the first condenser 11, the first expansion valve 12 and the first chambers of the cooler 13 are connected in series in sequence to form a fourth circulating water circuit, and the second chamber of the cooler 13 is connected in series to the second circulating water circuit.

[0029] That is, when the temperature of the power battery assembly 5 is too high and exceeds the set value, the compressor 9 starts working. When the compressor 9 reaches a certain pressure, the pressure switch 10 opens, and the coolant passes through the first condenser 11 and the first expansion valve 12 in sequence to cool the coolant in the fourth circulating water circuit. When the coolant passes through the first chamber of the cooler 13, it can exchange heat with the coolant in the second chamber to cool the coolant in the second circulating water circuit, thereby achieving the purpose of cooling the power battery assembly 5.

[0030] In some embodiments, the vehicle thermal management system further includes a second expansion valve 14 and an evaporator 15 , and the compressor 9 , the pressure switch 10 , the first condenser 11 , the second expansion valve 14 and the evaporator 15 are sequentially connected in series to form a fifth circulating water circuit.

[0031] In other words, the compressor 9, pressure switch 10, first condenser 11, second expansion valve 14, and evaporator 15 also form the vehicle air conditioning and refrigeration system, cooling the cockpit and passenger compartment. This eliminates the need for two separate sets of compressors 9, pressure switches 10, and first condensers 11, resulting in a simpler and more cost-effective vehicle thermal management system.

[0032] Specifically, the evaporator 15 and the warm air exchanger 4 are located in the same position in the vehicle, and both use the same fan to blow heat from the evaporator 15 into the vehicle cabin. For example, when the compressor 9 is operating, airflow passing through the evaporator 15 forms cold air, which is blown into the vehicle cabin by the fan. For example, when the liquid heater 1 is operating, airflow passing through the warm air exchanger 4 forms warm air, which is blown into the vehicle cabin by the fan.

[0033] In some embodiments, as Figure 1 As shown, the vehicle thermal management system also includes a motor controller 16, a motor assembly 17, a third water pump 18, an on-board charger 19, a DCDC converter 20 and a second radiator 21. At least one of the motor controller 16, the motor assembly 17, the on-board charger 19 and the DCDC converter 20 is connected in series with the third water pump 18 and the second radiator 21 to form a sixth circulating water circuit.

[0034] That is, the coolant in the sixth circulating water circuit is driven to circulate by the third water pump 18, so that the heat on at least one of the motor controller 16, the motor assembly 17, the third water pump 18, the on-board charger 19 and the DCDC converter 20 can be brought to the second radiator 21 for transfer to the outside, thereby achieving heat dissipation of at least one of the motor controller 16, the motor assembly 17, the third water pump 18, the on-board charger 19 and the DCDC converter 20, and ensuring the working performance of the above-mentioned electrical components.

[0035] Specifically, the motor controller 16 , the motor assembly 17 , the third water pump 18 , the onboard charger 19 and the DCDC converter 20 are all connected in series to the sixth circulating water path.

[0036] In some embodiments, the vehicle thermal management system further includes a cooling fan 22 adapted to dissipate heat for each of the first radiator 8 , the second radiator 21 , and the first condenser 11 .

[0037] That is, the cooling fan 22 is adjacent to each of the first radiator 8, the second radiator 21 and the first condenser 11, and only one cooling fan 22 accelerates the heat dissipation of each of the first radiator 8, the second radiator 21 and the first condenser 11, so that the vehicle thermal management system has lower cost and occupies less vehicle space.

[0038] Specifically, the cooling fan 22, the first radiator 8, the second radiator 21 and the first condenser 11 are preferably arranged at the same position of the vehicle, such as being arranged at the front end of the vehicle, the cooling fan 22, the first radiator 8, the second radiator 21 and the first condenser 11 are arranged along the front and rear directions of the vehicle, and the cooling fan 22 is located in front of each of the first radiator 8, the second radiator 21 and the first condenser 11.

[0039] In some embodiments, the warm air exchanger 4 is further connected in series to the third circulating water line. The vehicle thermal management system further includes a three-way valve 23, which is connected in series to the first circulating water line via a first interface 231 and a second interface 232, and is connected in series to the third circulating water line via a first interface 231 and a third interface 233.

[0040] That is, when the three-way valve 23 closes the second interface 232 and opens the third interface 233, while heating the body of the engine 7 and the internal water circuit and oil, the warm air exchanger 4 can also be used to achieve passenger heating and / or defrosting and defogging functions, making the vehicle thermal management system more functional.

[0041] Specifically, the provision of liquid heater 1 allows passengers to be heated or defrosted while parked without starting engine 7, thus preventing exhaust emissions and potential injuries to personnel caused by prolonged idling of engine 7. Furthermore, in extremely cold weather, when engine 7 cannot be started, the liquid heater 1 can be used to preheat engine 7, heat passengers, or defrost and defrost, thus preventing the possibility of engine 7 being unable to start, difficult to start, or even damaging to the vehicle during a cold start. Furthermore, achieving these functions reduces fuel consumption, resulting in a highly efficient, economical, and environmentally friendly vehicle thermal management system.

[0042] In some embodiments, as Figure 1 As shown, the vehicle thermal management system further includes a fourth water pump 24 , which is connected in series to the second circulating water path, and a three-way valve 23 is located between the fourth water pump 24 and the first water pump 2 .

[0043] That is, when the three-way valve 23 closes the second interface 232 and opens the third interface 233, the first water pump 2 and the fourth water pump 24 work at the same time, which can further improve the circulation efficiency of the coolant in the second circulating water circuit, thereby realizing the heating of the engine 7, heating of the passengers, and defrosting and demisting functions more quickly.

[0044] Specifically, the first water pump 2 is located upstream of the three-way valve 23 and the liquid-liquid exchanger 3 , and the fourth water pump 24 is located downstream of the three-way valve 23 .

[0045] In some embodiments, an expansion kettle 25 is further connected in series to at least one of the second circulating water circuit, the third circulating water circuit, and the sixth circulating water circuit.

[0046] The expansion kettle 25 can store the vaporous coolant from at least one of the second circulating water circuit, the third circulating water circuit and the sixth circulating water circuit, and reflux it after cooling, thereby balancing the pressure of the circulating water circuit. It is also convenient to judge whether the coolant in the circulating water circuit is leaking by observing the expansion kettle 25, thereby effectively ensuring the working reliability of the vehicle thermal management system.

[0047] Specifically, the second circulating water circuit, the third circulating water circuit and the sixth circulating water circuit are all connected in series with an expansion kettle 25. The expansion kettle 25 in the third circulating water circuit is located between the warm air exchanger 4 and the first radiator 8, that is, the expansion kettle 25 is also connected to the first circulating water circuit, and thus also has the function of balancing the pressure of the first circulating water circuit and ensuring sufficient coolant in the first circulating water circuit.

[0048] In some embodiments, the vehicle thermal management system further includes an oil pump and a fuel tank, and the fuel tank, the oil pump and the liquid heater 1 are sequentially connected in series through an oil pipeline.

[0049] When liquid heater 1 needs to operate, the fuel pump draws fuel from the fuel tank into liquid heater 1, and an ignition device within liquid heater 1 ignites the fuel, thereby starting liquid heater 1. Supplying fuel to liquid heater 1 from the fuel tank eliminates the need for a separate auxiliary fuel tank, further reducing the size of the vehicle's thermal management system and occupying less space within the vehicle.

[0050] An all-terrain vehicle according to an embodiment of the present invention includes a vehicle thermal management system as described in any of the above embodiments.

[0051] The technical advantages of the all-terrain vehicle according to the embodiment of the present utility model are the same as the technical advantages of the vehicle thermal management system of the above embodiment, and will not be repeated here.

[0052] In the description of the present invention, 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 to 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 invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0054] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0056] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0057] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A vehicle thermal management system, characterized in that: include: a liquid heater, a first water pump, a liquid-liquid exchanger, and a warm air exchanger, wherein the liquid heater, the first water pump, the warm air exchanger, and the first chamber of the liquid-liquid exchanger are connected in series to form a first circulating water circuit; a power battery assembly and a second water pump, wherein the heat exchange pipeline of the power battery assembly, the second water pump and the second chamber of the liquid-liquid exchanger are connected in series to form a second circulating water circuit; The engine and the first radiator, the heat exchange pipeline of the engine, the first radiator and the liquid heater are connected in series to form a third circulating water circuit.

2. The vehicle thermal management system according to claim 1, characterized in that: The vehicle thermal management system also includes a compressor, a pressure switch, a first condenser, a first expansion valve and a cooler. The compressor, the pressure switch, the first condenser, the first expansion valve and the first chamber of the cooler are connected in series in sequence to form a fourth circulating water circuit, and the second chamber of the cooler is connected in series to the second circulating water circuit.

3. The vehicle thermal management system according to claim 2, characterized in that: The vehicle thermal management system further includes a second expansion valve and an evaporator. The compressor, the pressure switch, the first condenser, the second expansion valve and the evaporator are sequentially connected in series to form a fifth circulating water circuit.

4. The vehicle thermal management system according to claim 2, characterized in that: The vehicle thermal management system also includes a motor controller, a motor assembly, a third water pump, an on-board charger, a DCDC converter and a second radiator. At least one of the motor controller, the motor assembly, the on-board charger and the DCDC converter is connected in series with the third water pump and the second radiator to form a sixth circulating water circuit.

5. The vehicle thermal management system according to claim 4, characterized in that: The vehicle thermal management system further includes a cooling fan adapted to dissipate heat for each of the first radiator, the second radiator, and the first condenser.

6. The vehicle thermal management system according to claim 1, characterized in that: The warm air exchanger is also connected in series to the third circulating water path; The vehicle thermal management system further includes a three-way valve, which is serially connected to the first circulating water line via a first interface and a second interface, and is serially connected to the third circulating water line via the first interface and a third interface.

7. The vehicle thermal management system according to claim 6, characterized in that: The vehicle thermal management system further includes a fourth water pump, which is connected in series to the second circulating water line. The three-way valve is located between the fourth water pump and the first water pump.

8. The vehicle thermal management system according to claim 4, characterized in that: An expansion kettle is further connected in series to at least one of the second circulating water circuit, the third circulating water circuit and the sixth circulating water circuit.

9. The vehicle thermal management system according to claim 1, characterized in that: The vehicle thermal management system further includes an oil pump and a fuel tank, wherein the fuel tank, the oil pump and the liquid heater are sequentially connected in series via an oil pipeline.

10. An all-terrain vehicle, characterized in that: The vehicle thermal management system comprises the vehicle thermal management system according to any one of claims 1 to 9.

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