Thermal management system of vehicle and vehicle

Abstract

The present invention discloses a thermal management system for a vehicle and a vehicle. The thermal management system for the vehicle includes: an air conditioning module, an electric drive water circuit and a radiator water circuit. The radiator water circuit includes a first radiator, and the electric drive water circuit includes an electric drive device. The air conditioning module includes: a water-cooled condenser. The water-cooled condenser includes a first air conditioning side flow channel and a first water circuit side flow channel. The first water circuit side flow channel of the water-cooled condenser is arranged on the radiator water circuit or the electric drive water circuit. When the radiator water circuit and the electric drive water circuit are cyclically connected, the first water circuit side flow channel of the water-cooled condenser is connected in series between the first radiator and the electric drive device. By arranging a water-cooled condenser and arranging the electric drive water circuit on one side of the water-cooled condenser to achieve a condensation effect on the refrigerant, it is unnecessary to arrange an air-cooled condenser of the air conditioning module at the front end of the vehicle, thereby improving the integration of the thermal management system and freeing up the space of the engine compartment originally occupied by the air-cooled condenser, which is beneficial to the space optimization of the engine compartment.

Description

Technical Field

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

[0002] With the development of the times, cars have become mass consumer goods. More and more people own cars, which also stimulates the rapid development of the automobile industry. Businesses continue to improve their products to make their cars perform better, thereby gaining the favor of consumers. In order to save energy and reduce emissions and reduce car costs, existing cars have produced electric cars and hybrid cars. They use batteries to power the entire vehicle, use cheap electricity, do not consume gasoline, and reduce exhaust emissions.

[0003] In related technologies, the thermal management system of the power battery and the air-conditioning module are integrated together to achieve maximum utilization of the thermal environment resources of the entire vehicle. However, the technology has a low degree of integration and the correlation between the various systems is small, resulting in a large number of radiators in the front-end cooling module of the entire vehicle and greater wind resistance, which is not conducive to the heat dissipation, integration and lightweight of the entire system. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a thermal management system, which realizes the condensation effect of the refrigerant of the air-conditioning module by setting the electric drive water circuit on one side of the water-cooled condenser, so that the air-cooled condenser of the air-conditioning module does not need to be set at the front end of the vehicle, thereby improving the integration of the thermal management system and optimizing the spatial layout of the front end of the vehicle.

[0005] The present invention also provides a vehicle.

[0006] According to the first aspect of the present invention, a thermal management system of a vehicle includes: an air-conditioning module, an electric drive water circuit and a radiator water circuit, the radiator water circuit includes a first radiator, the electric drive water circuit includes an electric drive device, and the radiator water circuit and the electric drive water circuit can be selectively circulated and connected; the air-conditioning module includes: a compressor, a water-cooled condenser, a first throttling element and an evaporator, the water-cooled condenser includes a first air-conditioning side flow channel and a first water circuit side flow channel, the compressor, the first air-conditioning side flow channel of the water-cooled condenser, the first throttling element and the evaporator are connected in series, the first water circuit side flow channel of the water-cooled condenser is arranged on the radiator water circuit or the electric drive water circuit, and when the radiator water circuit and the electric drive water circuit are circulated and connected, the first water circuit side flow channel of the water-cooled condenser is connected in series between the first radiator and the electric drive device.

[0007] According to the thermal management system of the vehicle in the embodiment of the present invention, a water-cooled condenser is provided to replace the existing air-cooled condenser, and the electric drive water circuit is provided on one side of the water-cooled condenser to achieve the condensation effect of the refrigerant of the air-conditioning module, so that there is no need to provide an air-cooled condenser of the air-conditioning module at the front end of the vehicle, thereby improving the integration of the thermal management system and freeing up the space in the engine compartment originally occupied by the air-cooled condenser, which is beneficial to the space optimization of the engine compartment.

[0008] According to some embodiments of the present invention, the thermal management system of the vehicle also includes a battery water circuit, a heat exchanger circuit, a control valve group and a heat exchanger, the battery water circuit includes a battery, the heat exchanger includes a second air-conditioning side flow channel and a second water circuit side flow channel, the second air-conditioning side flow channel is connected to the air-conditioning module, the second water circuit side flow channel is connected to the heat exchanger circuit, the control valve group is respectively connected to the electric drive water circuit, the radiator water circuit, the battery water circuit and the heat exchanger water circuit, and the control valve group has three states; when the control valve group is in a first state, the radiator water circuit is circularly connected to the electric drive water circuit, and the heat exchanger water circuit is circularly connected to the battery water circuit; when the control valve group is in a second state, the electric drive water circuit, the radiator water circuit, the heat exchanger water circuit and the battery water circuit are circularly connected; when the control valve group is in a third state, the electric drive water circuit is circularly connected to the battery water circuit.

[0009] According to some embodiments of the present invention, the control valve group includes: a four-way valve, the four-way valve includes a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected to one end of the radiator water circuit, the second valve port is connected to one end of the electric drive water circuit, the third valve port is connected to one end of the battery water circuit, and the fourth valve port is connected to one end of the heat exchange water circuit; a first three-way valve, the first three-way valve includes a fifth valve port, a sixth valve port and a seventh valve port, the fifth valve port is connected to the other end of the radiator water circuit, the sixth valve port is connected to the other end of the electric drive water circuit, and the The seventh valve port, the other end of the battery water circuit and the other end of the water exchange water circuit are connected to each other; wherein, when the control valve group is in the first state, the first valve port is connected to the second valve port, the third valve port is connected to the fourth valve port, and the fifth valve port is connected to the sixth valve port; when the control valve group is in the second state, the first valve port is connected to the fourth valve port, the second valve port is connected to the third valve port, and the fifth valve port is connected to the sixth valve port; when the control valve group is in the third state, the second valve port is connected to the third valve port, and the sixth valve port is connected to the seventh valve port.

[0010] According to some embodiments of the present invention, the electric drive water circuit further includes: a first water pump, the electric drive device, the first radiator and the first water pump are connected in series, and the electric drive device includes: a drive motor and / or a motor controller.

[0011] According to some embodiments of the present invention, the air-conditioning module also includes: a second throttling element, which is connected in series with the second air-conditioning side flow channel of the heat exchanger, and the second throttling element and the second air-conditioning side flow channel of the heat exchanger are commonly connected in parallel with the first throttling element and the evaporator.

[0012] According to some embodiments of the present invention, the thermal management system of the vehicle further includes: an engine water circuit, the engine water circuit includes an engine, the heat exchanger further includes a third water circuit side flow channel, the third water circuit side flow channel is arranged on the engine water circuit and connected to the engine.

[0013] According to some embodiments of the present invention, the engine water circuit further includes: a second radiator and a second water pump, and the engine, the first radiator and the first water pump are connected in series and connected to the engine.

[0014] According to some embodiments of the present invention, the engine water circuit further includes a heater core, which is connected in series with the third water circuit side flow channel of the heat exchanger and is commonly connected in parallel with the second radiator.

[0015] According to some embodiments of the present invention, a PTC heater is correspondingly arranged at the warm air core.

[0016] According to some embodiments of the present invention, the engine water circuit also includes a second three-way valve, one end of the heater core is connected to the engine, a first pipeline and a second pipeline are arranged between the other end of the heater core and the engine, the second three-way valve is connected between the heater core, the first pipeline and the second pipeline, the heat exchanger is arranged in the second pipeline, wherein the second three-way valve can selectively connect the other end of the heater core to the first pipeline or connect the other end of the heater core to the second pipeline.

[0017] According to some embodiments of the present invention, the engine water circuit further includes an exhaust gas heat exchanger, which is connected in series with the third water circuit side flow channel of the heat exchanger and is commonly connected in parallel with the second radiator.

[0018] A vehicle according to an embodiment of a second aspect of the present invention includes the thermal management system of the vehicle of the above embodiment.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a simplified structural diagram of a thermal management system according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the flow of coolant when the thermal management system according to an embodiment of the present invention is in mode 1;

[0023] Figure 3 is a schematic diagram of the flow of coolant when the thermal management system according to an embodiment of the present invention is in mode 2;

[0024] Figure 4 is a schematic diagram of the flow of coolant and refrigerant when the thermal management system according to an embodiment of the present invention is in mode three;

[0025] Figure 5 is a schematic diagram of the flow of coolant and refrigerant when the thermal management system according to an embodiment of the present invention is in mode 4;

[0026] Figure 6 FIG. 4 is a schematic diagram of the flow of the coolant when the thermal management system according to an embodiment of the present invention is in mode five.

[0027] Reference numerals:

[0028] 100. Thermal management system;

[0029] 10. Engine water circuit; 11. Second radiator; 12. Second water pump; 13. Warm air core; 14. PTC heater; 15. Exhaust gas heat exchanger; 16. Second three-way valve; 17. Engine;

[0030] 20. Electric drive water circuit; 22. First water pump; 23. Drive motor; 24. Motor controller; 25. Four-way valve; 26. First three-way valve; 27. First water tank; 28. On-board charger; 29. ​​DC converter;

[0031] 30. air conditioning module; 31. compressor; 32. water-cooled condenser; 33. first throttling element; 34. evaporator; 35. second throttling element;

[0032] 40. Battery water circuit; 41. Battery; 50. Heat exchanger; 60. Radiator water circuit; 61. First radiator; 70. Heat exchange water circuit; 71. Third water pump. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0034] Reference below Figure 1-Figure 6 The thermal management system 100 for a vehicle according to an embodiment of the present invention is described. The present invention also provides a vehicle having the thermal management system 100 for the vehicle.

[0035] Combination Figure 1-Figure 6 As shown, the thermal management system 100 of a vehicle according to an embodiment of the present invention includes: an electric drive water circuit 20, an air conditioning module 30, and a radiator water circuit 60. The radiator water circuit 60 includes a first radiator 61, the electric drive water circuit 20 includes an electric drive device, and the radiator water circuit 60 and the electric drive water circuit 20 are connected and can be selectively circulated and communicated. In other words, the coolant can circulate between the radiator water circuit 60 and the electric drive water circuit 20, so that the coolant can exchange heat with the electric drive device, thereby achieving heat dissipation of the electric drive device.

[0036] And, if Figure 1-Figure 6 As shown, the air conditioning module 30 includes: a compressor 31, a water-cooled condenser 32, a first throttling element 33 and an evaporator 34. The compressor 31, the water-cooled condenser 32, the first throttling element 33 and the evaporator 34 are connected in series. The first water channel side flow channel of the water-cooled condenser 32 is arranged on the radiator water channel 60 or the electric drive water channel 20. When the radiator water channel 60 and the electric drive water channel 20 are circulated and connected, the first water channel side flow channel of the water-cooled condenser 32 is connected in series between the first radiator 61 and the electric drive device. Among them, the compressor 31 can output high-temperature and high-pressure gaseous refrigerant, because the first water channel side flow channel of the water-cooled condenser 32 is connected in series between the first radiator 61 and the electric drive device, and the coolant of the electric drive water channel 20 absorbs the heat of the high-temperature and high-pressure gaseous refrigerant on the water-cooled condenser 32 to realize the condensation of the gaseous refrigerant. At this time, the refrigerant phase changes into a liquid state or a gas-liquid mixed state, and then passes through the first throttling element 33 to completely condense into a relatively low-temperature liquid refrigerant, and finally passes through the evaporator 34 to absorb the heat of the passenger compartment and evaporate into a gaseous refrigerant to realize the cooling of the passenger compartment. In addition, the electric drive water channel 20 absorbs the heat of the water-cooled condenser 32 and flows to the first radiator 61 with the coolant, and finally realizes the heat dissipation of the electric drive water channel 20, so that there is no need to set an air-cooled condenser of the air-conditioning module 30 at the front end of the vehicle, thereby improving the integration of the thermal management system 100.

[0037] Among them, the replacement of the air-cooled condenser by the water-cooled condenser is actually the replacement of the air-cooled condenser by the combination of the water-cooled condenser 32 and the first radiator 61, that is, there is no need to set an air-cooled condenser of the air-conditioning module 30 at the front end of the vehicle, but because the first radiator 61 itself is used for cooling the electric drive device, there are no new components, thereby improving the integration of the thermal management system 100.

[0038] Therefore, by providing a water-cooled condenser 32 to replace the existing air-cooled condenser, and by providing the electric drive water circuit 20 on one side of the water-cooled condenser to achieve heat dissipation of the water-cooled condenser 32, there is no need to provide an air-cooled condenser of the air-conditioning module 30 at the front end of the vehicle, thereby improving the integration of the thermal management system 100, and the space in the engine compartment originally occupied by the air-cooled condenser can be freed up, which is beneficial to the space optimization of the engine compartment.

[0039] Combination Figure 1-Figure 6 As shown, the thermal management system 100 also includes: a battery water circuit 40, a heat exchange water circuit 70, a control valve group and a heat exchanger 50, the battery water circuit 40 includes a battery 41, the heat exchanger 50 includes a second air conditioning side flow channel and a second water circuit side flow channel, the second air conditioning side flow channel is connected to the air conditioning module 30, and the second water circuit side flow channel is connected to the heat exchange water circuit 70. In this way, the heat exchange water circuit 70, the battery water circuit 40, the electric drive water circuit 20 and the radiator water circuit 60 are selectively connected through the control valve group, so that the battery water circuit 40 can selectively exchange heat with the electric drive water circuit 20. For example, when it is necessary to preheat the battery 41, the battery water circuit 40 can be connected to the electric drive water circuit 20 so that the two can exchange heat with each other, and the heat generated by the electric drive device is supplied to the battery 41, thereby achieving preheating of the battery 41. Alternatively, when the battery 41 needs to be cooled, the water exchange circuit 70, the battery circuit 40, the electric drive circuit 20 and the radiator circuit 60 are connected so that the heat of the battery circuit 40 and the electric drive circuit 20 can flow to the radiator circuit 60, that is, the heat generated by the battery 41 and the electric drive device is transferred to the first radiator 61, so that the battery circuit 40 and the electric drive circuit 20 can be cooled. And, when the electric drive device needs to dissipate heat, the electric drive circuit 20 and the radiator circuit 60 are connected together through the control valve group, so as to achieve heat dissipation of the electric drive device and the battery 41.

[0040] Specifically, the control valve group is connected to the electric drive water circuit 20, the radiator water circuit 60, the battery water circuit 40 and the hot water exchange circuit 70, respectively, and the control valve group has three states. When the control valve group is in the first state, the radiator water circuit 60 is circulated and connected with the electric drive water circuit 20, and the hot water exchange circuit 70 is circulated and connected with the battery water circuit 40, that is, the coolant between the radiator water circuit 60 and the electric drive water circuit 20 can circulate with each other, so that the electric drive water circuit 20 can be dissipated by the first radiator 61 on the radiator water circuit 60. When the control valve group is in the second state, the electric drive water circuit 20, the radiator water circuit 60, the hot water exchange circuit 70, and the battery water circuit 40 are circulated and connected, that is, at this time, the electric drive water circuit 20, the radiator water circuit 60, the hot water exchange circuit 70 and the battery water circuit 40 are connected in sequence to form a loop, so that the heat generated by the electric drive device and the battery 41 can be discharged through the radiator water circuit 60 and the hot water exchange circuit 70, thereby ensuring the stable operation of the electric drive device and the battery 41. When the control valve group is in the third state, the electric drive water circuit 20 and the battery water circuit 40 are circulated and connected, that is, a loop is formed between the electric drive water circuit 20 and the battery water circuit 40. In this way, the heat generated by the electric drive device can be transmitted to the battery 41, so that the battery 41 can be preheated, and the heat generated by the electric drive device can be reasonably utilized.

[0041] Furthermore, the heat exchanger 50 includes a second air-conditioning side flow channel and a second water circuit side flow channel, the second air-conditioning side flow channel is connected to the air-conditioning module 30, and the second water circuit side flow channel is connected to the hot water exchange circuit 70. The air-conditioning module 30 and the hot water exchange circuit 70 can exchange heat through the second air-conditioning side flow channel and the second water circuit side flow channel. When the driver turns on the air-conditioning module 30, the air-conditioning module 30 can exchange heat with the battery water circuit 40 through the heat exchanger 50, so that the air-conditioning module 30 cools the passenger compartment while absorbing the heat of the hot water exchange circuit 70.

[0042] like Figure 1 As shown, the control valve group includes: a four-way valve 25 and a first three-way valve 26, the four-way valve 25 includes a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected to one end of the radiator water circuit 60, the second valve port is connected to one end of the electric drive water circuit 20, the third valve port is connected to one end of the battery water circuit 40, the fourth valve port is connected to one end of the water exchange circuit 70, and the first three-way valve 26 includes a fifth valve port, a sixth valve port and a seventh valve port, the fifth valve port is connected to the other end of the radiator water circuit 60, the sixth valve port is connected to the other end of the electric drive water circuit 20, and the seventh valve port, the other end of the battery water circuit 40 and the other end of the water exchange circuit 70 are connected.

[0043] In this way, when the control valve group is in the first state, the first valve port is connected to the second valve port, the third valve port is connected to the fourth valve port, and the fifth valve port is connected to the sixth valve port, that is, the radiator water circuit 60 is circularly connected to the electric drive water circuit 20, and the heat exchange water circuit 70 is circularly connected to the battery water circuit 40. In other words, the coolant between the radiator water circuit 60 and the electric drive water circuit 20 can circulate with each other. Such an arrangement can dissipate heat from the electric drive water circuit 20 through the first radiator 61 on the radiator water circuit 60.

[0044] And when the control valve group is in the second state, the first valve port is connected to the fourth valve port, the second valve port is connected to the third valve port, and the fifth valve port is connected to the sixth valve port, that is, the electric drive water circuit 20, the radiator water circuit 60, the hot water exchange circuit 70, and the battery water circuit 40 are circularly connected. In other words, at this time, the electric drive water circuit 20, the radiator water circuit 60, the hot water exchange circuit 70 and the battery water circuit 40 are connected in sequence to form a loop, so that the heat generated by the electric drive device and the battery 41 can be discharged through the radiator water circuit 60 and the hot water exchange circuit 70, thereby ensuring the stable operation of the electric drive device and the battery 41.

[0045] And when the control valve group is in the third state, the second valve port is connected to the third valve port, and the sixth valve port is connected to the seventh valve port, that is, the electric drive water circuit 20 and the battery water circuit 40 are circularly connected, that is, a loop is formed between the electric drive water circuit 20 and the battery water circuit 40. In this way, the heat generated by the electric drive device can be transmitted to the battery 41, so that the battery 41 can be preheated, and the heat generated by the electric drive device can be reasonably utilized.

[0046] Among them, Figure 1 As shown, the four-way valve 25 includes port A, port B, port C and port D, port A is the first valve port and is connected to one end of the radiator water circuit 60, port B is the fourth valve port and is connected to one end of the heat exchange water circuit 70, port C is the third valve port and is connected to one end of the battery water circuit 40, and port D is the second valve port and is connected to one end of the electric drive water circuit 20. And, the first three-way valve 26 includes port A, port B and port C, port A is the fifth valve port and is connected to the other end of the radiator water circuit 60, port B is the seventh valve port, and the seventh valve port is simultaneously connected to the other end of the battery water circuit 40 and the other end of the heat exchange water circuit 70, and port C is the sixth valve port and is connected to the electric drive water circuit 20.

[0047] In addition, if Figure 1-Figure 6As shown, the thermal management system 100 further includes: a first water tank 27, and a four-way valve 25 is integrated on the first water tank 27. When the four-way valve 25 and the first three-way valve 26 are switching different modes, one or more of the heat dissipation water circuit, the electric drive water circuit 20, the heat exchange water circuit 70 and the battery water circuit 40 are started. At this time, the coolant in the entire thermal management system 100 is insufficient. Therefore, the four-way valve 25 is integrated on the first water tank 27. In this way, when the coolant in the thermal management system 100 is insufficient, the coolant can be injected into the thermal management system 100 through the first water tank 27, thereby meeting the heat exchange demand of the thermal management system 100.

[0048] like Figure 1-Figure 6 As shown, the electric drive water circuit 20 also includes: a first water pump 22, and the electric drive device, the first radiator 61 are connected in series with the first water pump 22. That is to say, the first radiator 61 can be arranged in series with the electric drive device. When the electric drive device continues to work and causes a high temperature, the first water pump 22 is started to start the electric drive water circuit 20. When the coolant flows through the electric drive device, it can take away the heat in the electric drive device, and when the coolant flows through the first radiator 61, it can dissipate the heat to the outside. Such an arrangement realizes the heat dissipation of the electric drive device. Among them, the electric drive device includes: a drive motor 23 and a motor controller 24. The drive motor 23 is used to drive the vehicle to travel, and the motor controller 24 is used to control the operating parameters of the drive motor 23.

[0049] Reference Figure 1-Figure 6 As shown, the electric drive water circuit 20 is also connected to the water channel in the charging device, and the water channel in the charging device is connected in series between the water channel in the electric drive device and an interface of the four-way valve 25, and the charging device includes: an on-board charger 28 and a DC converter 29. In other words, the electric drive water circuit 20 can also achieve heat exchange with the charging device. For example, when the vehicle is not charging, the electric drive water circuit 20 needs to cool down the drive motor 23, the motor controller 24 and the charging device, and the heat of the drive motor 23, the motor controller 24 and the charging device can be taken away by the electric drive water circuit 20. For another example, when the vehicle is in a charging state and the ambient temperature is lower than a preset value, the battery 41 needs to be heated, so the electric drive water circuit 20 can take away the heat of the charging device and transfer it to the battery 41 through the battery water circuit 40, so that the battery 41 can be preheated, and then the temperature requirement for charging the battery 41 can be met.

[0050] In addition, if Figure 1-Figure 6As shown, the air conditioning module 30 further includes: a second throttling element 35, the second throttling element 35 is connected in series with the second air conditioning side flow channel of the heat exchanger 50, and the second throttling element 35 and the second air conditioning side flow channel of the heat exchanger 50 are connected in parallel with the first throttling element 33 and the evaporator 34. That is, the evaporator 34 and the second air conditioning side flow channel of the heat exchanger 50 are connected in parallel with each other. In addition, the second throttling element 35 can control whether the refrigerant flows through the heat exchanger 50. For example, when the air conditioning module 30 is started and the second throttling element 35 is not turned on, the refrigerant does not flow through the heat exchanger 50, so that the air conditioning module 30 will not exchange heat with the water exchange circuit 70, so that the air conditioning module 30 only realizes heat exchange for the passenger compartment. Alternatively, when the air conditioning module 30 is started and the second throttling element 35 is turned on, the coolant can flow through the heat exchanger 50, so that the second air conditioning side flow channel of the heat exchanger 50 can achieve the same function as the evaporator 34, that is, the heat exchanger 50 can achieve heat exchange with the hot water exchange circuit 70, and when the hot water exchange circuit 70 and the battery water circuit 40 are connected, the air conditioning module 30 can cool the battery 41. If the hot water exchange circuit 70, the battery water circuit 40, the electric drive water circuit 20 and the radiator water circuit 60 are connected in series, the air conditioning module 30 can also cool the electric drive water circuit 20. In this way, the thermal management system 100 of the embodiment of the present invention has a higher degree of integration.

[0051] In addition, if Figure 1 As shown, the thermal management system 100 also includes: an engine water circuit 10, the engine water circuit 10 includes an engine 17, and the heat exchanger 50 also includes a third water circuit side flow channel, the third water circuit side flow channel is arranged on the engine water circuit 10, and the third water circuit side flow channel is connected to the engine 17. In this way, only one heat exchanger 50 is needed between the engine water circuit 10, the air conditioning module 30 and the battery water circuit 40 to achieve heat exchange, which is conducive to improving the integration of the thermal management system 100. For example, the engine water circuit 10 can achieve heat exchange with the heat exchange water circuit 70. When the vehicle is just started and the engine 17 and the battery 41 both need to be preheated, the engine water circuit 10 can collect the heat generated by the engine 17 to preheat the engine 17, and the heat of the engine water circuit 10 is transmitted to the heat exchange water circuit 70 through the heat exchanger 50. The heat exchange water circuit 70 is then connected to the battery water circuit 40, so that the battery 41 can be preheated.

[0052] like Figure 1-Figure 6As shown, the engine water circuit 10 includes: a second radiator 11 and a second water pump 12, the second radiator 11 and the second water pump 12 are connected in series, and the second radiator 11 is connected to the engine 17. That is to say, the second water pump 12 can continuously extract coolant so that the coolant can continuously circulate in the engine water circuit 10 to achieve heat exchange. Among them, the second radiator 11 can be a high-temperature radiator. When the temperature of the engine 17 is high due to continuous operation, the second radiator 11 can dissipate heat for the engine 17 through the circulating water circuit. In addition, the engine water circuit 10 also includes: a second water tank, the second water tank is connected in parallel with the second radiator 11, and when the coolant in the engine water circuit 10 is insufficient, the second water tank can replenish the engine water circuit 10 with coolant.

[0053] In addition, the second radiator 11 and the first radiator 61 are arranged opposite to each other, and a cooling fan is arranged on one side of the second radiator 11 or the first radiator 61, and the cooling fan can dissipate heat from the second radiator 11 and the first radiator 61. In this way, one cooling fan corresponds to the second radiator 11 and the first radiator 61, which can improve the integration of the thermal management system 100. In addition, the position where the air-cooled condenser was originally set can also be left vacant, which is conducive to optimizing the space of the engine compartment.

[0054] In addition, if Figure 1-Figure 6 As shown, the engine water circuit 10 also includes: a heater core 13, the heater core 13 is connected in series with the third water circuit side flow channel of the heat exchanger 50, and is connected in parallel with the second radiator 11. That is to say, when the temperature is low, the passenger compartment and the engine 17 of the vehicle need to be heated, so that the heat generated by the engine 17 can be dissipated to the passenger compartment through the heater core 13, thereby heating the passenger compartment. In addition, the heater core 13 and the third water circuit side flow channel of the heat exchanger 50 are connected in parallel with the second radiator 11, that is, the branch where the second radiator 11 is located can be controlled to be opened or closed, so that when the engine water circuit 10 preheats the engine 17 and the battery 41, the heat will not dissipate to the outside through the second radiator 11. In addition, when the temperature is high, the heat of the engine 17 can be dissipated to the outside by the second radiator 11 and the third water channel side flow channel of the heat exchanger 50 which are connected in parallel, and the heat exchanger 50 and the heater core 13 will not be started, thereby ensuring that the internal temperature of the passenger compartment will not be affected.

[0055] Furthermore, if Figure 1-Figure 6As shown, a PTC heater 14 is correspondingly provided at the heater core 13. Among them, the existence of the PTC heater 14 also meets the heating requirements of the passenger compartment in pure electric mode. For example, when the vehicle is in pure electric mode, the engine 17 will not start. When the passenger compartment and the battery 41 need to be heated, the passenger compartment and the battery 41 can be heated by the PTC heater 14, so that the thermal management system 100 of the vehicle can be more reasonable, that is, the passenger compartment and the battery 41 can be heated when the vehicle is in different driving modes. In addition, when the heat generated by the engine 17 is insufficient, the PTC heater 14 can also be turned on, so that the defects such as low heating capacity when the engine water circuit 10 is heated at low temperature, slow defrosting and defogging of the whole vehicle, and poor heating effect can be eliminated.

[0056] like Figure 1 As shown, the engine water circuit 10 further includes a second three-way valve 16, one end of the heater core 13 is connected to the engine 17, a first pipeline and a second pipeline are arranged between the other end of the heater core 13 and the engine 17, the second three-way valve 16 is connected between the heater core 13, the first pipeline and the second pipeline, and the heat exchanger 50 is arranged in the second pipeline, wherein the second three-way valve 16 can selectively connect the other end of the heater core 13 to the first pipeline or connect the other end of the heater core 13 to the second pipeline. In other words, the second three-way valve 16 can control the heat exchanger 50 to be selectively connected in series or in parallel with the engine 17. For example, when the second three-way valve 16 controls the heat exchanger 50 and the engine 17 to be connected in series, the heat in the coolant can be heat exchanged through the third water channel side flow channel of the heat exchanger 50 and the heat exchange water channel 70; when it is not necessary to preheat the battery 41, the second three-way valve 16 can control the heat exchanger 50 and the engine 17 to be connected in parallel. In this way, the heat of the exhaust gas heat exchanger 15 will not be heat exchanged with the heat exchanger 50. Among them, the second three-way valve 16 includes an A port, a B port and a C port, wherein the A port is connected to the engine 17, the B port is connected to the heater core 13, and the C port is connected to the heat exchanger 50.

[0057] In addition, if Figure 1-Figure 6 As shown, the engine water circuit 10 also includes: an exhaust gas heat exchanger 15, which is connected in series with the third water circuit side flow channel of the heat exchanger 50, and is connected in parallel with the second radiator 11. The coolant can absorb the heat of the exhaust gas through the exhaust gas heat exchanger 15, and the coolant transfers the heat to the engine 17, the heater core 13, and the heat exchanger 50 in sequence through the second water pump 12. The heat of the heater core 13 enters the passenger compartment through the air, thereby achieving the purpose of warming up the engine 17 and heating the passenger compartment, and the heat in the exhaust gas can also be transferred to the heat exchange water circuit 70 through the third water circuit side flow channel of the heat exchanger 50 to preheat the battery 41.

[0058] In the thermal management system 100 provided by the present invention, various refrigerants such as R134a, R410a, R32, and R290 can be used, and medium and high temperature refrigerants are preferably used.

[0059] Refer to the following Figure 2-Figure 6 Several exemplary operating modes of the thermal management system 100 in the embodiment of the present invention are described.

[0060] Mode 1: If Figure 2 As shown, this mode is a mode for preheating the battery 41 and the engine 17 together and a mode for heating the passenger compartment. This mode is applied when the ambient temperature is lower than the preset temperature, the vehicle is started, and the engine 17 and the battery 41 need to be preheated and the passenger compartment needs to be heated. Specifically, the engine water circuit 10 is started, the heat exchange water circuit 70 and the battery water circuit 40 are started, the second water pump 12 and the engine 17 are running, the second three-way valve 16 is in a three-way state, the second three-way valve 16 channels are all open, and the B port and the C port of the four-way valve 25 are connected.

[0061] Principle of preheating the engine 17 and heating the passenger compartment: the coolant is driven by the second water pump 12, passes through the engine 17, the heater core 13, the second three-way valve 16, the heat exchanger 50, the exhaust gas heat exchanger 15, and is replenished with coolant by the first water tank 27 and then returns to the second water pump 12. The coolant absorbs the heat of the exhaust gas and is transferred to the engine 17, the heater core 13, and the heat exchanger 50 in turn. The heat of the heater core 13 enters the passenger compartment through the air, thereby achieving the purpose of warming up the engine 17 and heating the passenger compartment.

[0062] Heating principle of battery 41: The coolant is driven to circulate by the third water pump 71, passing through the battery 41, the four-way valve 25, and the heat exchanger 50 in sequence. The coolant absorbs heat from the engine water circuit 10 through the heat exchanger 50 to achieve the preheating effect of the battery 41.

[0063] Mode 2: If Figure 3 As shown, this mode is the electric drive device cooling mode, which is applied when the ambient temperature is not high, the passenger compartment and the battery 41 do not need to be cooled, and the vehicle is in EV mode. Specifically, the radiator water path 60 is connected to the electric drive water path 20, the first water pump 22 is running, the A port and the D port of the four-way valve 25 are connected, and the A port and the C port of the first three-way valve 26 are connected.

[0064] Cooling principle of electric drive device: The coolant is driven by the first water pump 22, and returns to the first water pump 22 after passing through the first three-way valve 26, the water-cooled condenser 32, the first radiator 61, the four-way valve 25, the on-board charger 28 and the DC converter 29. During this process, the coolant absorbs the heat of the electric drive device, the on-board charger 28 and the DC converter 29, and dissipates the heat into the air through the first radiator 61, thereby achieving the purpose of cooling the electric drive device. In this way, the electric drive water circuit 20 can be started separately, so that other modules do not need to be started, making the mode switching of the thermal management system 100 more convenient.

[0065] Mode 3: Figure 4 As shown, this mode is the electric drive device cooling and air conditioning refrigeration mode, which is applied when the ambient temperature is not high, the passenger compartment needs to be cooled (dehumidified), and the battery 41 does not need to be cooled. Specifically, the radiator water path 60 is connected to the electric drive water path 20, the first water pump 22 and the compressor 31 are running, and the A port and the D port of the four-way valve 25 are connected, and the A port and the C port of the first three-way valve 26 are connected.

[0066] Cooling principle of the electric drive device: the coolant is driven by the first water pump 22 to circulate, and passes through the first three-way valve 26, the water-cooled condenser 32, the first radiator 61, the four-way valve 25, the electric drive device, the on-board charger 28 and the DC converter 29 before returning to the first water pump 22. During this process, the coolant absorbs heat from the electric drive device, the on-board charger 28, the DC converter 29 and the water-cooled condenser 32, and brings the heat to the air through the first radiator 61, thereby cooling the electric drive device.

[0067] Air conditioning refrigeration (dehumidification) principle: The refrigerant is driven by the compressor 31, passes through the water-cooled condenser 32, the first throttling element 33, and the evaporator 34, and then returns to the compressor 31. The refrigerant exchanges heat with the electric drive water circuit 20 through the water-cooled condenser 32 to reduce the refrigerant temperature to achieve the purpose of refrigeration (dehumidification).

[0068] Mode 4: Figure 5 As shown, this mode is the electric drive device cooling, battery 41 cooling and air conditioning refrigeration mode, which is used when the ambient temperature is high and the passenger compartment and battery 41 both need to be cooled. Specifically, the first water pump 22, the third water pump 71, and the compressor 31 are running, the A port and the B port of the four-way valve 25 are connected, the C port and the D port are connected, the A port and the C port of the first three-way valve 26 are connected, and the second throttling element 35 is opened. In other words, the battery water circuit 40, the water exchange water circuit 70, the radiator water circuit 60 and the electric drive water circuit 20 are connected in series.

[0069] Air conditioning refrigeration principle: The refrigerant is driven by the compressor 31 and passes through the water-cooled condenser 32, the first throttling element 33 and the evaporator 34, the second throttling element 35 connected in parallel with the first throttling element 33 and the evaporator 34, and the heat exchanger 50, and then returns to the compressor 31. The water-cooled condenser 32 takes away the system heat, so that the heat exchanger 50 and the evaporator 34 are cooled. The evaporator 34 exchanges heat with the passenger compartment, thereby achieving the purpose of cooling the passenger compartment.

[0070] Cooling principle of the electric drive device and the battery 41: the A port and the B port of the four-way valve 25 are connected, the C port and the D port are connected, and the electric drive water circuit 20, the radiator water circuit 60, the heat exchange water circuit 70, and the battery water circuit 40 are connected in series. The coolant is driven by the first water pump 22 and the third water pump 71, and passes through the third water pump 71, the battery 41, the C port and the D port of the four-way valve 25, the first water pump 22, the first three-way valve 26, the electric drive device, the water-cooled condenser 32, the first radiator 61, the four-way valve 25, and the heat exchanger 50 in sequence and then returns to the first water pump 22. The coolant after the first radiator 61 dissipates heat, and after being cooled again by the heat exchanger 50, it takes away the heat generated by the battery 41, the electric drive device and the water-cooled condenser 32, so as to achieve the purpose of cooling the battery 41 and the electric drive device. Among them, the heat exchanger 50 is cooled by the coolant.

[0071] Mode 5: Figure 6 As shown, this mode is the charging preheating mode of the battery 41, which is applied when the temperature of the environment is lower than the preset value, the vehicle is in the charging mode, and the battery 41 needs to be preheated. Specifically, the electric drive water circuit 20 is connected to the battery water circuit 40, the first water pump 22 is running, the C port and the D port of the four-way valve 25 are connected and opened, the B port and the C port of the first three-way valve 26 are connected, the drive motor 23 enters the stall mode, and the on-board charger 28 and the DC converter 29 are running.

[0072] Heating principle of battery 41: the coolant is driven by the first water pump 22, passes through the first three-way valve 26, the battery 41, the C port and the D port of the four-way valve 25, the on-board charger 28 and the DC converter 29 and the electric drive device, and then returns to the first water pump 22. The coolant takes away the heat of the on-board charger 28 and the DC converter 29, the motor stall heat, and the electronic control heat, and then transfers the heat to the battery 41 after entering the battery 41, thereby achieving the purpose of preheating the battery 41.

[0073] A vehicle according to an embodiment of the second aspect of the present invention includes the vehicle thermal management system 100 of the above embodiment.

[0074] 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 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0075] 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 invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0076] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thermal management system for a vehicle, characterized in that: include: An air conditioning module, an electric drive water circuit and a radiator water circuit, wherein the radiator water circuit includes a first radiator, the electric drive water circuit includes an electric drive device, and the radiator water circuit and the electric drive water circuit are selectively cyclically connected; The air conditioning module comprises: a compressor, a water-cooled condenser, a first throttling element and an evaporator, the water-cooled condenser comprises a first air conditioning side flow channel and a first waterway side flow channel, the compressor, the first air conditioning side flow channel of the water-cooled condenser, the first throttling element and the evaporator are connected in series, the first waterway side flow channel of the water-cooled condenser is arranged on the radiator waterway or the electric drive waterway, when the radiator waterway is cyclically connected with the electric drive waterway, the first waterway side flow channel of the water-cooled condenser is connected in series between the first radiator and the electric drive device; It also includes a battery water circuit, a heat exchange water circuit, a control valve group and a heat exchanger, wherein the battery water circuit includes a battery, the heat exchanger includes a second air-conditioning side flow channel and a second water-circuit side flow channel, the second air-conditioning side flow channel is connected to the air-conditioning module, the second water-circuit side flow channel is connected to the heat exchange water circuit, the control valve group is respectively connected to the electric drive water circuit, the radiator water circuit, the battery water circuit and the heat exchange water circuit, and the control valve group has three states; When the control valve group is in the first state, the radiator water circuit is in circulation communication with the electric drive water circuit, and / or the heat exchange water circuit is in circulation communication with the battery water circuit; When the control valve group is in the second state, the electric drive water circuit, the radiator water circuit, the heat exchange water circuit, and the battery water circuit are circulated and connected; When the control valve group is in the third state, the electric drive water circuit is in circulation communication with the battery water circuit.

2. The thermal management system of a vehicle according to claim 1, characterized in that: The control valve group comprises: A four-way valve, the four-way valve comprising a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port being connected to one end of the radiator water circuit, the second valve port being connected to one end of the electric drive water circuit, the third valve port being connected to one end of the battery water circuit, and the fourth valve port being connected to one end of the heat exchange water circuit; a first three-way valve, the first three-way valve comprising a fifth valve port, a sixth valve port and a seventh valve port, the fifth valve port being connected to the other end of the radiator water circuit, the sixth valve port being connected to the other end of the electric drive water circuit, the seventh valve port, the other end of the battery water circuit and the other end of the heat exchange water circuit being connected to each other; Wherein, when the control valve group is in the first state, the first valve port is communicated with the second valve port, the third valve port is communicated with the fourth valve port, and the fifth valve port is communicated with the sixth valve port; When the control valve group is in the second state, the first valve port is communicated with the fourth valve port, the second valve port is communicated with the third valve port, and the fifth valve port is communicated with the sixth valve port; When the control valve group is in the third state, the second valve port is communicated with the third valve port, and the sixth valve port is communicated with the seventh valve port.

3. The thermal management system for a vehicle according to claim 1, characterized in that: The electric drive water circuit further includes: a first water pump; the electric drive device, the first radiator and the first water pump are connected in series; and the electric drive device includes: a drive motor and / or a motor controller.

4. The thermal management system for a vehicle according to claim 1, characterized in that: The air conditioning module also includes: a second throttling element, which is connected in series with the second air conditioning side flow channel of the heat exchanger, and the second throttling element and the second air conditioning side flow channel of the heat exchanger are commonly connected in parallel with the first throttling element and the evaporator.

5. The thermal management system for a vehicle according to claim 1, characterized in that: Also includes: The engine waterway includes an engine, and the heat exchanger further includes a third waterway side flow channel, and the third waterway side flow channel is arranged on the engine waterway and connected to the engine.

6. The thermal management system for a vehicle according to claim 5, characterized in that: The engine water circuit further includes: a second radiator and a second water pump, and the engine, the second radiator and the second water pump are connected in series.

7. The thermal management system for a vehicle according to claim 6, characterized in that: The engine water circuit further includes a heater core, which is connected in series with the third water circuit side flow channel of the heat exchanger and is connected in parallel with the second radiator.

8. The thermal management system for a vehicle according to claim 7, characterized in that: A PTC heater is correspondingly arranged at the warm air core.

9. The thermal management system for a vehicle according to claim 7, characterized in that: The engine water circuit also includes a second three-way valve, one end of the heater core is connected to the engine, a first pipeline and a second pipeline are arranged between the other end of the heater core and the engine, the second three-way valve is connected between the heater core, the first pipeline and the second pipeline, the heat exchanger is arranged in the second pipeline, wherein the second three-way valve can selectively connect the other end of the heater core to the first pipeline or connect the other end of the heater core to the second pipeline.

10. The thermal management system for a vehicle according to claim 7, characterized in that: The engine water circuit also includes an exhaust gas heat exchanger, which is connected in series with the third water circuit side flow channel of the heat exchanger and is connected in parallel with the second radiator.

11. A vehicle, characterized in that: include: A thermal management system for a vehicle according to any one of claims 1 to 10.

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