Thermal management system and vehicle

Abstract

The utility model discloses a thermal management system and a vehicle, the thermal management system comprises a low temperature heat radiation loop, the low temperature heat radiation loop comprises a low temperature heat radiator and a low temperature function accessory, the low temperature heat radiator and the low temperature function accessory are connected in series; the low-temperature heat dissipation loop comprises a high-temperature heat dissipation device and a high-temperature functional accessory, and the high-temperature functional accessory and the high-temperature heat dissipation device are connected in series; and the auxiliary radiator assembly is connected with the low-temperature radiator and the high-temperature radiator in parallel, and the auxiliary radiator assembly is configured to selectively dissipate heat of the low-temperature functional accessory and / or the high-temperature functional accessory. The auxiliary radiator assembly, the low-temperature radiator and the high-temperature radiator are connected in parallel, when the low-temperature radiator and the high-temperature radiator can meet the cooling requirements of the motor and the engine, the auxiliary radiator assembly does not work, and energy consumption is reduced. When the cooling requirement of the motor or the engine cannot be met, the auxiliary radiator assembly assists the low-temperature radiator or the high-temperature radiator in radiating, and the good radiating performance of the heat management system is guaranteed.

Description

Technical Field

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

[0002] In related technologies, the engine and motor of a hybrid vehicle use a high-temperature radiator and a low-temperature radiator to dissipate heat respectively. The auxiliary radiator is used to assist the high-temperature radiator or the low-temperature radiator to provide additional cooling capacity under high load or high temperature environments, more effectively reduce the temperature of the coolant, and prevent the temperature of components such as the engine and motor from being too high.

[0003] However, the way in which the auxiliary radiator assists the high-temperature radiator or the low-temperature radiator is fixed, and the auxiliary radiator cannot be flexibly controlled to dissipate heat for the engine or motor. The thermal management system has high energy consumption, and the heat dissipation performance of the engine and motor still has room for improvement. Utility Model Content

[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 that reduces energy consumption while maintaining good heat dissipation performance of the thermal management system by connecting a secondary radiator assembly in parallel with a low-temperature radiator and a high-temperature radiator.

[0005] According to the thermal management system of the embodiment of the first aspect of the present utility model, it includes: a low-temperature heat dissipation circuit, the low-temperature heat dissipation circuit includes: a low-temperature radiator and a low-temperature functional accessory, the low-temperature radiator and the low-temperature functional accessory are connected in series; a high-temperature heat dissipation circuit, the low-temperature heat dissipation circuit includes: a high-temperature radiator and a high-temperature functional accessory, the high-temperature functional accessory and the high-temperature radiator are connected in series; an auxiliary radiator assembly, the auxiliary radiator assembly is connected in parallel with the low-temperature radiator and the high-temperature radiator, and the auxiliary radiator assembly is configured to selectively dissipate heat for the low-temperature functional accessory and / or the high-temperature functional accessory.

[0006] According to the thermal management system of the present invention, the auxiliary radiator assembly is connected in parallel with the low-temperature radiator and the high-temperature radiator. When the low-temperature radiator and the high-temperature radiator can meet the cooling needs of the motor and engine, the auxiliary radiator assembly does not operate, thereby reducing energy consumption. When the low-temperature radiator and the high-temperature radiator cannot meet the cooling needs of the motor or engine, the auxiliary radiator assembly assists the low-temperature radiator or the high-temperature radiator in dissipating heat, ensuring the good heat dissipation performance of the thermal management system.

[0007] According to some embodiments of the present invention, the auxiliary radiator assembly includes: a first auxiliary radiator and a second auxiliary radiator, the first auxiliary radiator and the second auxiliary radiator are connected in parallel with the low-temperature radiator, and the first auxiliary radiator and the second auxiliary radiator are connected in parallel with the high-temperature radiator.

[0008] According to some embodiments of the present invention, the auxiliary radiator assembly includes: a first control valve and a second control valve, the first control valve is respectively connected to the high-temperature functional accessory, the low-temperature functional accessory and the inlet of the first auxiliary radiator, and the second control valve is respectively connected to the high-temperature functional accessory, the low-temperature functional accessory and the outlet of the first auxiliary radiator.

[0009] According to some embodiments of the present invention, the auxiliary radiator assembly includes: a third control valve and a fourth control valve, the third control valve is respectively connected to the inlet of the high-temperature functional accessory, the low-temperature functional accessory and the second auxiliary radiator, and the fourth control valve is respectively connected to the outlet of the high-temperature functional accessory, the low-temperature functional accessory and the second auxiliary radiator.

[0010] According to some embodiments of the present invention, the auxiliary radiator assembly also includes: a first multi-way pipe, which is respectively connected to the first control valve, the third control valve, the high-temperature radiator and the high-temperature functional accessories; and the auxiliary radiator assembly also includes: a second multi-way pipe, which is respectively connected to the first control valve, the third control valve, the low-temperature radiator and the low-temperature functional accessories.

[0011] According to some embodiments of the present invention, the auxiliary radiator assembly also includes: a third multi-way pipe, which is respectively connected to the second control valve, the fourth control valve, the high-temperature radiator and the high-temperature functional accessories; and the auxiliary radiator assembly also includes: a fourth multi-way pipe, which is respectively connected to the second control valve, the fourth control valve, the low-temperature radiator and the low-temperature functional accessories.

[0012] According to some embodiments of the present invention, the thermal management system also includes: an air-conditioning system, the air-conditioning system including: a compressor, a condenser, an evaporator and a first heat exchanger, the compressor and the condenser are connected in series, and the evaporator and the first heat exchanger are connected in parallel to each other and in series with the compressor, and the first heat exchanger and the low-temperature functional accessory are connected in parallel.

[0013] According to some embodiments of the present invention, the thermal management system further includes: a heating system, the heating system including a heater core and a second heat exchanger, the second heat exchanger and the heater core are arranged in series and in parallel with the low-temperature functional accessory.

[0014] According to some embodiments of the present invention, the high-temperature heat dissipation circuit further includes: a multi-way valve, which is connected between the high-temperature functional accessory and the heater core.

[0015] A vehicle according to an embodiment of the second aspect of the present utility model includes the thermal management system.

[0016] The beneficial effects of the embodiments of the present invention are as follows: by connecting the auxiliary radiator assembly in parallel with the low-temperature radiator and the high-temperature radiator, when the low-temperature radiator and the high-temperature radiator can meet the cooling needs of the motor and engine, the auxiliary radiator assembly does not operate, thereby reducing energy consumption. When the low-temperature radiator and the high-temperature radiator cannot meet the cooling needs of the motor or engine, the auxiliary radiator assembly assists the low-temperature radiator or the high-temperature radiator in dissipating heat, ensuring good heat dissipation performance of the thermal management system.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a thermal management system according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of a conventional operating mode of a thermal management system according to an embodiment of the present utility model;

[0021] Figure 3 Schematic diagram of the first pure electric operation mode of the thermal management system according to an embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the second pure electric operation mode of the thermal management system according to an embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of hybrid operation mode 1 of a thermal management system according to an embodiment of the present utility model;

[0024] Figure 6 is a schematic diagram of hybrid operating mode 2 of a thermal management system according to an embodiment of the present utility model;

[0025] Figure 7 is a schematic diagram of hybrid operating mode 3 of a thermal management system according to an embodiment of the present utility model;

[0026] Figure 8 1 is a schematic diagram of a thermal management system power feeding operation mode 1 according to an embodiment of the present utility model;

[0027] Figure 9 Schematic diagram of the second power feeding working mode of the thermal management system according to an embodiment of the present utility model.

[0028] Reference numerals:

[0029] 100. Thermal management system;

[0030] 10. Low-temperature heat dissipation circuit; 11. Low-temperature radiator; 12. Motor; 13. Motor controller; 14. First water pump;

[0031] 20. High-temperature heat dissipation circuit; 21. High-temperature radiator; 22. Engine; 23. Second water pump;

[0032] 30. Auxiliary radiator assembly; 31. First auxiliary radiator; 32. Second auxiliary radiator; 33. First control valve; 34. Second control valve; 35. Third control valve; 36. Fourth control valve; 37. First multi-way pipe; 38. Second multi-way pipe; 39. Third multi-way pipe; 40. Fourth multi-way pipe;

[0033] 50. Air conditioning system; 51. Compressor; 52. Condenser; 53. Evaporator; 54. First heat exchanger;

[0034] 60. Heating system; 61. Warm air core; 62. Second heat exchanger; 63. Electric heater;

[0035] 71. Multi-way valve; 72. Battery. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0037] Reference below Figures 1-9 A thermal management system 100 according to an embodiment of the present invention is described. The present invention also provides a vehicle.

[0038] Reference Figure 1 As shown, the thermal management system 100 according to the embodiment of the present invention includes: a low-temperature heat dissipation circuit 10 , a high-temperature heat dissipation circuit 20 and an auxiliary radiator assembly 30 .

[0039] The low-temperature heat dissipation circuit 10 includes a low-temperature radiator 11 and low-temperature functional accessories, which are connected in series. Specifically, the low-temperature functional accessories include a motor 12, a motor controller 13, an onboard charger, and a first water pump 14. These accessories generate relatively little heat during operation, which can be cooled using the low-temperature radiator 11.

[0040] The high-temperature heat dissipation circuit 20 includes a high-temperature radiator 21 and high-temperature functional accessories, which are connected in series. Specifically, these accessories include an engine 22 and a second water pump 23. The engine 22 generates a large amount of heat during operation, which is dissipated by the high-temperature radiator 21, which has a high cooling capacity, to maintain system stability.

[0041] The auxiliary radiator assembly 30 is connected in parallel with the low-temperature radiator 11 and the high-temperature radiator 21. The auxiliary radiator assembly 30 is configured to selectively dissipate heat for low-temperature functional accessories and / or high-temperature functional accessories. In other words, the auxiliary radiator assembly 30 is independent of the low-temperature heat dissipation circuit 10 and the high-temperature heat dissipation circuit 20. When the low-temperature radiator 11 and the high-temperature radiator 21 can meet the cooling needs of the motor 12 and the engine 22, the auxiliary radiator assembly 30 does not operate, thereby reducing the flow resistance in each heat dissipation circuit of the thermal management system 100 and minimizing energy loss within the circuits.

[0042] When the low-temperature radiator 11 or the high-temperature radiator 21 cannot meet the cooling requirements of the motor 12 or the engine 22, the auxiliary radiator assembly 30 can dissipate heat for the low-temperature functional accessories, or dissipate heat for the high-temperature functional accessories, or dissipate heat for both the low-temperature functional accessories and the high-temperature functional accessories, thereby rationally utilizing resources to improve the cooling capacity of the thermal management system 100 and maintain good heat dissipation performance with low energy consumption.

[0043] Thus, by connecting the auxiliary radiator assembly 30 in parallel with the low-temperature radiator 11 and the high-temperature radiator 21, when the low-temperature radiator 11 and the high-temperature radiator 21 can meet the cooling needs of the motor 12 and the engine 22, the auxiliary radiator assembly 30 does not operate, thereby reducing energy consumption. When the low-temperature radiator 11 and the high-temperature radiator 21 cannot meet the cooling needs of the motor 12 or the engine 22, the auxiliary radiator assembly 30 assists the low-temperature radiator 11 or the high-temperature radiator 21 in dissipating heat, ensuring good heat dissipation performance of the thermal management system 100.

[0044] like Figure 1 As shown, the auxiliary radiator assembly 30 includes a first auxiliary radiator 31 and a second auxiliary radiator 32. The first auxiliary radiator 31 and the second auxiliary radiator 32 are connected in parallel with the low-temperature radiator 11, and the first auxiliary radiator 31 and the second auxiliary radiator 32 are connected in parallel with the high-temperature radiator 21. In this way, the coolant after exchanging heat with the low-temperature functional accessories can be cooled at the first auxiliary radiator 31 and the second auxiliary radiator 32, or at the low-temperature radiator 11. Similarly, the coolant after exchanging heat with the high-temperature functional accessories can be cooled at the first auxiliary radiator 31 and the second auxiliary radiator 32, or at the high-temperature radiator 21. The first auxiliary radiator 31 and the second auxiliary radiator 32 are independent of the low-temperature heat dissipation circuit 10 and the high-temperature heat dissipation circuit 20 and are only used when needed, maintaining good heat dissipation performance while reducing energy consumption.

[0045] Reference Figure 1As shown, the thermal management system 100 also includes a cooling fan, which is positioned opposite the high-temperature radiator 21 and the low-temperature radiator 11. The cooling fan circulates air to remove heat transferred from the coolant, thereby improving the heat dissipation efficiency of the high-temperature radiator 21 and the low-temperature radiator 11 and accelerating heat dissipation. Furthermore, the first auxiliary radiator 31 and the second auxiliary radiator 32 are not positioned in the heat dissipation path of the high-temperature radiator 21 and the low-temperature radiator 11, thereby not affecting the cooling efficiency of the high-temperature radiator 21 and the low-temperature radiator 11.

[0046] like Figure 1 As shown, the auxiliary radiator assembly 30 includes a first control valve 33 and a second control valve 34. The first control valve 33 is connected to the high-temperature functional accessory, the low-temperature functional accessory and the inlet of the first auxiliary radiator 31 respectively, and the second control valve 34 is connected to the high-temperature functional accessory, the low-temperature functional accessory and the outlet of the first auxiliary radiator 31 respectively.

[0047] Specifically, the first control valve 33 is provided with a first valve port, a second valve port and a third valve port. The first valve port is Figure 1 The second valve port is "a" shown in Figure 1 The third valve port is "b" shown in Figure 1 The “c” shown in .

[0048] Among them, the first valve port is connected to the inlet of the first sub-radiator 31, the second valve port is connected to the output end of the high-temperature functional accessory, and the third valve port is connected to the output end of the low-temperature functional accessory. When the first valve port and the third valve port are opened and the second valve port is closed, the coolant carries the heat of the low-temperature functional accessory to the first sub-radiator 31 for heat dissipation. When the first valve port and the second valve port are opened and the third valve port is closed, the coolant carries the heat of the high-temperature functional accessory to the first sub-radiator 31 for heat dissipation.

[0049] And, the second control valve 34 is provided with a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is Figure 1 The fifth valve port is shown as "d" in Figure 1 The sixth valve port is shown as "e" in Figure 1 The “f” shown in .

[0050] Among them, the fourth valve port is connected to the input end of the low-temperature functional accessory, the fifth valve port is connected to the input end of the high-temperature functional accessory, and the sixth valve port is connected to the outlet of the first auxiliary heat sink. When the sixth valve port and the fourth valve port are opened and the fifth valve port is closed, the low-temperature coolant flowing out of the first auxiliary radiator 31 flows to the low-temperature functional accessory and exchanges heat with it. When the sixth valve port and the fifth valve port are opened and the fourth valve port is closed, the low-temperature coolant flowing out of the first auxiliary radiator 31 flows to the high-temperature functional accessory and exchanges heat with it.

[0051] By providing the first control valve 33 and the second control valve 34, the first sub-radiator 31 can be selected to dissipate heat for either high-temperature or low-temperature accessories, depending on the vehicle's condition. Specifically, when the first sub-radiator 31 is required to assist in cooling low-temperature accessories, ports "a" and "c" of the first control valve 33 are opened, port "b" is closed, and ports "f" and "d" of the second control valve 34 are opened, with port "e" closed. When the first sub-radiator 31 is required to assist in cooling high-temperature accessories, ports "a" and "b" of the first control valve 33 are opened, port "c" is closed, and ports "f" and "e" of the second control valve 34 are opened, with port "d" closed.

[0052] When the auxiliary cooling of the first sub-radiator 31 is not needed, the valve ports "a", "b" and "c" of the first control valve 33 and the valve ports "d", "e" and "f" of the second control valve 34 are all closed.

[0053] like Figure 1 As shown, the auxiliary radiator assembly 30 includes a third control valve 35 and a fourth control valve 36. The third control valve 35 is connected to the inlets of the high-temperature functional accessory, the low-temperature functional accessory and the second auxiliary radiator 32 respectively, and the fourth control valve 36 is connected to the outlets of the high-temperature functional accessory, the low-temperature functional accessory and the second auxiliary radiator 32 respectively.

[0054] Specifically, the third control valve 35 is provided with a seventh valve port, an eighth valve port and a ninth valve port, and the seventh valve port is Figure 1 The eighth valve port is shown as "g" in Figure 1 The "h" shown in the figure, the ninth valve port is Figure 1 The “i” shown in .

[0055] Among them, the seventh valve port is connected to the output end of the low-temperature functional accessory, the eighth valve port is connected to the inlet of the second sub-radiator 32, and the ninth valve port is connected to the output end of the high-temperature functional accessory. When the seventh valve port and the eighth valve port are opened and the ninth valve port is closed, the coolant carries the heat of the low-temperature functional accessory to the second sub-radiator 32 for heat dissipation. When the ninth valve port and the eighth valve port are opened and the seventh valve port is closed, the coolant carries the heat of the high-temperature functional accessory to the second sub-radiator 32 for heat dissipation.

[0056] And, the fourth control valve 36 is provided with a tenth valve port, an eleventh valve port and a twelfth valve port, the tenth valve port is Figure 1 The "j" shown in the figure is the eleventh valve port. Figure 1 The "k" shown in the figure, the twelfth valve port is Figure 1 The “l” shown in .

[0057] Among them, the tenth valve port is connected to the input end of the low-temperature functional accessory, the eleventh valve port is connected to the input end of the high-temperature functional accessory, and the twelfth valve port is connected to the outlet of the first auxiliary heat sink. When the twelfth valve port and the tenth valve port are opened and the eleventh valve port is closed, the low-temperature coolant flowing out of the second auxiliary radiator 32 flows to the low-temperature functional accessory and exchanges heat with it. When the twelfth valve port and the eleventh valve port are opened and the tenth valve port is closed, the low-temperature coolant flowing out of the second auxiliary radiator 32 flows to the high-temperature functional accessory and exchanges heat with it.

[0058] By configuring the third and fourth control valves 35 and 36, the second auxiliary radiator 32 can be selected to dissipate heat for either high-temperature or low-temperature accessories, depending on vehicle conditions. Specifically, when the second auxiliary radiator 32 is required to assist in cooling low-temperature accessories, the "g" and "h" ports of the third control valve 35 are opened, the "i" port is closed, and the "l" and "j" ports of the fourth control valve 36 are opened, with the "k" port closed. When the second auxiliary radiator 32 is required to assist in cooling high-temperature accessories, the "i" and "h" ports of the third control valve 35 are opened, the "g" port is closed, and the "l" and "k" ports of the fourth control valve 36 are opened, with the "j" port closed.

[0059] When the auxiliary cooling of the second auxiliary radiator 32 is not needed, the valve ports "g", "h" and "i" of the third control valve 35 and the valve ports "j", "k" and "l" of the fourth control valve 36 are all closed.

[0060] like Figure 1 As shown, the auxiliary radiator assembly 30 further includes a first multi-way pipe 37, which is respectively connected to the first control valve 33, the third control valve 35, the high-temperature radiator 21, and the high-temperature functional accessories. Specifically, the first multi-way pipe 37 may be a four-way pipe, which is respectively connected to the valve port "b" of the first control valve 33, the valve port "i" of the third control valve 35, the inlet of the high-temperature radiator 21, and the output of the high-temperature functional accessories. After heat exchange with the high-temperature functional accessories, the coolant can flow through the first multi-way pipe 37 to the high-temperature radiator 21, the first control valve 33, and the third control valve 35. The flow direction of the coolant is determined by controlling the opening and closing of the valve ports of the first control valve 33 and the third control valve 35.

[0061] As well as Figure 1As shown, the auxiliary radiator assembly 30 further includes a second multi-way pipe 38, which is respectively connected to the first control valve 33, the third control valve 35, the low-temperature radiator 11, and the low-temperature functional accessories. Specifically, the second multi-way pipe 38 can be a four-way pipe, which is respectively connected to the valve port "c" of the first control valve 33, the valve port "g" of the third control valve 35, the inlet of the low-temperature radiator 11, and the output of the low-temperature functional accessories. After heat exchange with the low-temperature functional accessories, the coolant can flow through the second multi-way pipe 38 to the low-temperature radiator 11, the first control valve 33, and the third control valve 35. The flow direction of the coolant is determined by controlling the opening and closing of the valve ports of the first control valve 33 and the third control valve 35.

[0062] like Figure 1 As shown, the auxiliary radiator assembly 30 further includes a third multi-way pipe 39, which is respectively connected to the second control valve 34, the fourth control valve 36, the high-temperature radiator 21, and the high-temperature functional accessories. Specifically, the third multi-way pipe 39 may be a four-way pipe, which is respectively connected to the valve port "e" of the second control valve 34, the valve port "k" of the fourth control valve 36, the outlet of the high-temperature radiator 21, and the input of the high-temperature functional accessories. After dissipating heat at the first auxiliary radiator 31, the second auxiliary radiator 32, and the high-temperature radiator 21, the low-temperature coolant can flow through the third multi-way pipe 39 to the high-temperature functional accessories, exchanging heat with them and lowering the temperature of the high-temperature functional accessories.

[0063] As well as Figure 1 As shown, the auxiliary radiator assembly 30 further includes a fourth multi-way pipe 40, which is respectively connected to the second control valve 34, the fourth control valve 36, the low-temperature radiator 11, and the low-temperature functional accessories. Specifically, the fourth multi-way pipe 40 can be a four-way pipe, which is respectively connected to the valve port "d" of the second control valve 34, the valve port "j" of the fourth control valve 36, the outlet of the low-temperature radiator 11, and the input of the low-temperature functional accessories. After dissipating heat at the first auxiliary radiator 31, the second auxiliary radiator 32, and the low-temperature radiator 11, the low-temperature coolant can flow through the fourth multi-way pipe 40 to the low-temperature functional accessories, exchanging heat with them and lowering the temperature of the low-temperature functional accessories.

[0064] The thermal management system 100 also includes an air conditioning system 50, which includes a compressor 51, a condenser 52, an evaporator 53, and a first heat exchanger 54. The compressor 51 and condenser 52 are connected in series, while the evaporator 53 and the first heat exchanger 54 are connected in parallel and in series with the compressor 51. The first heat exchanger 54 is connected in parallel with the low-temperature functional accessories. The compressor 51 compresses the refrigerant into a high-temperature, high-pressure gas. The high-temperature, high-pressure refrigerant condenses in the condenser 52, releasing heat. The evaporator 53 evaporates the refrigerant and absorbs heat, thereby cooling the passenger compartment. The first heat exchanger 54 facilitates heat exchange between the coolant side and the refrigerant side of the thermal management system 100. For example, heat from the low-pressure functional accessories can be used to heat the passenger compartment, improving energy efficiency within the thermal management system 100.

[0065] like Figure 1 As shown, thermal management system 100 also includes a heating system 60, which includes a heater core 61 and a second heat exchanger 62. The second heat exchanger 62 and heater core 61 are connected in series and in parallel with the low-temperature functional accessories. Heating system 60 is used to heat the passenger compartment and improve the cabin temperature. Heat from the low-temperature functional accessories is transferred to heater core 61 via coolant, releasing heat to heat the passenger compartment. The cooled coolant then flows back to the low-temperature functional accessories, cooling them. Furthermore, heating system 60 is equipped with an electric heater 63 for heating the passenger compartment.

[0066] like Figure 1 As shown, the high-temperature heat dissipation circuit 20 further includes a multi-way valve 71 connected between the high-temperature functional accessories and the heater core 61. In other words, the heat from the high-temperature functional accessories can also be used to heat the passenger compartment. The heat from the high-temperature functional accessories can be transferred to the heater core 61 via the coolant, releasing the heat to heat the passenger compartment. The cooled coolant then flows back to the high-temperature functional accessories to cool them.

[0067] Refer to the following Figure 2-Figure 9 The working mode of the thermal management system 100 according to the embodiment of the present invention is described.

[0068] Reference Figure 2 As shown, the working mode 1 of the thermal management system 100 of the embodiment of the present invention is:

[0069] Under normal operating conditions, the high-temperature radiator 21 and the low-temperature radiator 11 meet the cooling requirements of the high-temperature functional accessories and the low-temperature functional accessories. The auxiliary radiator assembly 30 does not intervene in the heat dissipation. The valve ports of the first control valve 33, the second control valve 34, the third control valve 35 and the fourth control valve 36 are all closed. The low-temperature radiator 11 cools the low-temperature functional accessories, and the high-temperature radiator 21 cools the high-temperature functional accessories.

[0070] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0071] Low-temperature heat dissipation circuit 10 : low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11 .

[0072] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, and the high-temperature coolant dissipates heat through the high-temperature radiator 21 and turns into low-temperature coolant, which continues to circulate and cool the engine 22.

[0073] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant, the coolant temperature rises, and the high-temperature coolant dissipates heat through the low-temperature radiator 11 and turns into low-temperature coolant, which continues to circulate and cool the low-temperature functional accessories.

[0074] Reference Figure 3 As shown, the second working mode of the thermal management system 100 of the embodiment of the present invention is:

[0075] In pure electric mode, under extreme operating conditions such as high load or high-temperature high-speed driving, only the motor 12 works and the engine 22 does not work. The motor controller 13 periodically detects the temperature of the motor 12 and calculates the temperature rise rate ΔT. When the temperature rise rate is higher than ΔT1 for five consecutive cycles, the "a" valve port and the "c" valve port of the first control valve 33 are opened, the "d" valve port and the "f" valve port of the second control valve 34 are opened, and the remaining valve ports are closed. The first auxiliary radiator 31 assists the low-temperature radiator 11 in cooling the low-temperature functional accessories.

[0076] Among them, the detection cycle and temperature rise rate need to be calibrated on the actual vehicle. It is not limited to 5 cycles and can be more or less. The specific value of the temperature rise rate ΔT1 can also be set according to the specific situation. The same applies to other working modes below.

[0077] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0078] Circuit of the first auxiliary radiator 31 : first auxiliary radiator 31 → second control valve 34 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → first control valve 33 → first auxiliary radiator 31 .

[0079] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant. The coolant temperature rises, and part of the high-temperature coolant dissipates heat through the low-temperature radiator 11, and the other part dissipates heat through the first auxiliary radiator 31. The coolant temperature drops and converges at the fourth multi-channel pipe 40, continuing to circulate and cool the low-temperature functional accessories.

[0080] Reference Figure 4 As shown, the working mode 3 of the thermal management system 100 of the embodiment of the present invention is:

[0081] In pure electric mode, under extreme operating conditions such as high load or high-temperature and high-speed driving, after the first sub-radiator 31 intervenes, the motor controller 13 continues to periodically detect the temperature of the motor 12 and calculates the temperature rise rate ΔT. When the temperature rise rate of the motor 12 is higher than ΔT2 for five consecutive cycles, the "a" valve port and the "c" valve port of the first control valve 33 are opened, the "d" valve port and the "f" valve port of the second control valve 34 are opened, the "g" valve port and the "h" valve port of the third control valve 35 are opened, the "l" valve port and the "j" valve port of the fourth control valve 36 are opened, and the remaining valve ports are closed. The first sub-radiator 31 and the second sub-radiator 32 jointly assist the low-temperature radiator 11 in cooling the low-temperature functional accessories.

[0082] The temperature rise rate ΔT2 may be greater than, equal to, or less than ΔT1. The specific value is set according to the vehicle conditions. The same applies to the values ​​of ΔT3, ΔT4, etc. in other working modes below.

[0083] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0084] Circuit of the first auxiliary radiator 31: first auxiliary radiator 31 → second control valve 34 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → first control valve 33 → first auxiliary radiator 31;

[0085] Circuit of the second auxiliary radiator 32: second auxiliary radiator 32 → fourth control valve 36 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → third control valve 35 → second auxiliary radiator 32 .

[0086] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant. The temperature of the coolant rises, and part of the high-temperature coolant dissipates heat through the low-temperature radiator 11, another part dissipates heat through the first auxiliary radiator 31, and another part dissipates heat through the second auxiliary radiator 32. The coolant temperature drops and converges at the fourth multi-channel pipe 40, continuing to circulate and cool the low-temperature functional accessories.

[0087] Reference Figure 5As shown, the fourth working mode of the thermal management system 100 of the embodiment of the present invention is:

[0088] In hybrid mode, under extreme operating conditions such as high load or high-temperature high-speed driving, the engine 22 and the motor 12 work simultaneously, the motor controller 13 periodically detects the temperature of the motor 12, and the engine electronic control unit periodically detects the temperature of the engine 22 and calculates the temperature rise rate ΔT. When the temperature rise rate of the motor 12 is higher than ΔT3 for five consecutive cycles, the "a" valve port and the "c" valve port of the first control valve 33 are opened, the "d" valve port and the "f" valve port of the second control valve 34 are opened, and the remaining valve ports are closed. The first auxiliary radiator 31 assists the low-temperature radiator 11 in cooling the low-temperature functional accessories, and the high-temperature radiator 21 cools the high-temperature functional accessories.

[0089] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0090] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0091] Circuit of the first auxiliary radiator 31 : first auxiliary radiator 31 → second control valve 34 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → first control valve 33 → first auxiliary radiator 31 .

[0092] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, and the high-temperature coolant dissipates heat through the high-temperature radiator 21 and turns into low-temperature coolant, which continues to circulate and cool the engine 22.

[0093] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant. The coolant temperature rises, and part of the high-temperature coolant dissipates heat through the low-temperature radiator 11, and the other part dissipates heat through the first auxiliary radiator 31. The coolant temperature drops and converges at the fourth multi-channel pipe 40, continuing to circulate and cool the low-temperature functional accessories.

[0094] Reference Figure 6 As shown, the fifth working mode of the thermal management system 100 of the embodiment of the present invention is:

[0095] In hybrid mode, under extreme operating conditions such as high load or high-temperature high-speed driving, the engine 22 and the motor 12 work simultaneously, the motor controller 13 periodically detects the temperature of the motor 12, and the engine electronic control unit periodically detects the temperature of the engine 22 and calculates the temperature rise rate ΔT. When the temperature rise rate of the engine 22 is higher than ΔT4 for five consecutive cycles, the "i" valve port and the "h" valve port of the third control valve 35 are opened, the "l" valve port and the "k" valve port of the fourth control valve 36 are opened, and the remaining valve ports are closed. The second auxiliary radiator 32 assists the high-temperature radiator 21 in cooling the high-temperature functional accessories, and the low-temperature radiator 11 cools the high and low temperature functional accessories.

[0096] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0097] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0098] Second sub-radiator 32 circuit: second sub-radiator 32 → fourth control valve 36 → third multi-way pipe 39 → second water pump 23 → engine 22 → first multi-way pipe 37 → third control valve 35 → second sub-radiator 32 .

[0099] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant, the coolant temperature rises, the high-temperature coolant dissipates heat through the low-temperature radiator 11, the coolant temperature drops, and continues to circulate to cool the low-temperature functional accessories.

[0100] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, part of the high-temperature coolant dissipates heat through the high-temperature radiator 21, and the other part dissipates heat through the second auxiliary radiator 32. The coolant temperature drops and converges at the third multi-way pipe 39, continuing to circulate and cool the high-temperature functional accessories.

[0101] Reference Figure 7 As shown, the sixth working mode of the thermal management system 100 of the embodiment of the present invention is:

[0102] In hybrid mode, under extreme operating conditions such as high load or high-temperature high-speed driving, the engine 22 and the motor 12 work simultaneously, the motor controller 13 periodically detects the temperature of the motor 12, and the engine electronic control unit periodically detects the temperature of the engine 22, and calculates the temperature rise rate ΔT. When the temperature rise rates of the motor 12 and the engine 22 are higher than ΔT3 and ΔT4 respectively for five consecutive cycles, the "a" valve port and the "c" valve port of the first control valve 33 are opened, the "d" valve port and the "f" valve port of the second control valve 34 are opened, the "i" valve port and the "h" valve port of the third control valve 35 are opened, the "l" valve port and the "k" valve port of the fourth control valve 36 are opened, and the remaining valve ports are closed. The first auxiliary radiator 31 assists the low-temperature radiator 11 in cooling the low-temperature functional accessories, and the second auxiliary radiator 32 assists the high-temperature radiator 21 in cooling the high-temperature functional accessories.

[0103] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0104] Circuit of the first auxiliary radiator 31: first auxiliary radiator 31 → second control valve 34 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → first control valve 33 → first auxiliary radiator 31;

[0105] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0106] Second sub-radiator 32 circuit: second sub-radiator 32 → fourth control valve 36 → third multi-way pipe 39 → second water pump 23 → engine 22 → first multi-way pipe 37 → third control valve 35 → second sub-radiator 32 .

[0107] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant. The coolant temperature rises, and part of the high-temperature coolant dissipates heat through the low-temperature radiator 11, and the other part dissipates heat through the first auxiliary radiator 31. The coolant temperature drops and converges at the fourth multi-channel pipe 40, continuing to circulate and cool the low-temperature functional accessories.

[0108] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, part of the high-temperature coolant dissipates heat through the high-temperature radiator 21, and the other part dissipates heat through the second auxiliary radiator 32. The coolant temperature drops and converges at the third multi-way pipe 39, continuing to circulate and cool the high-temperature functional accessories.

[0109] Reference Figure 8 As shown, the seventh working mode of the thermal management system 100 of the embodiment of the present invention is:

[0110] In feed-back mode, under extreme operating conditions such as high load or high-temperature, high-speed driving, engine 22 provides power, motor 12 charges battery 72, and low-temperature radiator 11 meets the cooling needs of low-temperature accessories. The engine electronic control unit periodically monitors the engine 22 temperature and calculates the temperature rise rate ΔT. If the engine 22 temperature rise rate exceeds ΔT5 for five consecutive cycles, ports "a" and "b" of the first control valve 33 open, ports "e" and "f" of the second control valve 34 open, and the remaining ports close. The first auxiliary radiator 31 assists the high-temperature radiator 21 in cooling the high-temperature accessories, while the low-temperature radiator 11 cools the low-temperature accessories.

[0111] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0112] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0113] Circuit of the first sub-radiator 31 : first sub-radiator 31 →second control valve 34 →third multi-way pipe 39 →second water pump 23 →engine 22 →first multi-way pipe 37 →first control valve 33 →first sub-radiator 31 .

[0114] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant, the coolant temperature rises, the high-temperature coolant dissipates heat through the low-temperature radiator 11, the coolant temperature drops, and continues to circulate to cool the low-temperature functional accessories.

[0115] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, part of the high-temperature coolant dissipates heat through the high-temperature radiator 21, and the other part dissipates heat through the first auxiliary radiator 31. The coolant temperature drops and converges at the third multi-channel pipe 39, continuing to circulate and cool the high-temperature functional accessories.

[0116] Reference Figure 9 As shown, the working mode eight of the thermal management system 100 of the embodiment of the present invention is:

[0117] In the feeding mode, under extreme working conditions such as high load or high-temperature and high-speed driving, after the first auxiliary radiator 31 intervenes, the engine electronic control unit continues to periodically detect the temperature of the engine 22 and calculates the temperature rise rate ΔT. When the temperature rise rate of the engine 22 is higher than ΔT6 for five consecutive cycles, the "a" valve port and the "b" valve port of the first control valve 33 are opened, the "e" valve port and the "f" valve port of the second control valve 34 are opened, the "i" valve port and the "h" valve port of the third control valve 35 are opened, the "l" valve port and the "k" valve port of the fourth control valve 36 are opened, and the remaining valve ports are closed. The first auxiliary radiator 31 and the second auxiliary radiator 32 jointly assist the high-temperature radiator 21 in cooling the high-temperature functional accessories, and the low-temperature radiator 11 in cooling the low-temperature functional accessories.

[0118] In this embodiment, the temperature rise rate ΔT6 may be equal to ΔT5.

[0119] Low-temperature heat dissipation circuit 10: low-temperature radiator 11 → fourth multi-way pipe 40 → first water pump 14 → motor controller 13 → motor 12 → second multi-way pipe 38 → low-temperature radiator 11;

[0120] High-temperature heat dissipation circuit 20: second water pump 23 → engine 22 → first multi-way pipe 37 → high-temperature radiator 21 → third multi-way pipe 39 → second water pump 23;

[0121] Circuit of the first auxiliary radiator 31: first auxiliary radiator 31 → second control valve 34 → third multi-way pipe 39 → second water pump 23 → engine 22 → first multi-way pipe 37 → first control valve 33 → first auxiliary radiator 31;

[0122] Second sub-radiator 32 circuit: second sub-radiator 32 → fourth control valve 36 → third multi-way pipe 39 → second water pump 23 → engine 22 → first multi-way pipe 37 → third control valve 35 → second sub-radiator 32 .

[0123] The low-temperature functional accessories such as the motor 12 and the motor controller 13 exchange heat with the low-temperature coolant, the coolant temperature rises, the high-temperature coolant dissipates heat through the low-temperature radiator 11, the coolant temperature drops, and continues to circulate to cool the low-temperature functional accessories.

[0124] The engine 22 exchanges heat with the low-temperature coolant, the coolant temperature rises, part of the high-temperature coolant is dissipated through the high-temperature radiator 21, another part is dissipated through the first auxiliary radiator 31, and another part is dissipated through the second auxiliary radiator 32. The coolant temperature drops and converges at the third multi-channel pipe 39, continuing to circulate and cool the high-temperature functional accessories.

[0125] A vehicle according to an embodiment of the second aspect of the present invention includes a thermal management system 100 .

[0126] 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.

[0127] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0128] Although the embodiments of the present invention 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 purpose 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, characterized in that: include: A low-temperature heat dissipation circuit (10), the low-temperature heat dissipation circuit (10) comprising: a low-temperature radiator (11) and a low-temperature functional accessory, the low-temperature radiator (11) and the low-temperature functional accessory being connected in series; A high-temperature heat dissipation circuit (20), wherein the low-temperature heat dissipation circuit (10) comprises a high-temperature radiator (21) and a high-temperature functional accessory, wherein the high-temperature functional accessory and the high-temperature radiator (21) are connected in series; A secondary radiator assembly (30) is connected in parallel with the low-temperature radiator (11) and the high-temperature radiator (21), and the secondary radiator assembly (30) is configured to selectively dissipate heat for the low-temperature functional accessory and / or the high-temperature functional accessory.

2. The thermal management system according to claim 1, characterized in that The auxiliary radiator assembly (30) comprises: a first auxiliary radiator (31) and a second auxiliary radiator (32), wherein the first auxiliary radiator (31) and the second auxiliary radiator (32) are connected in parallel with the low-temperature radiator (11), and the first auxiliary radiator (31) and the second auxiliary radiator (32) are connected in parallel with the high-temperature radiator (21).

3. The thermal management system according to claim 2, characterized in that: The auxiliary radiator assembly (30) comprises: a first control valve (33) and a second control valve (34), wherein the first control valve (33) is respectively connected to the high-temperature functional accessory, the low-temperature functional accessory and the inlet of the first auxiliary radiator (31), and the second control valve (34) is respectively connected to the high-temperature functional accessory, the low-temperature functional accessory and the outlet of the first auxiliary radiator (31).

4. The thermal management system according to claim 3, characterized in that: The auxiliary radiator assembly (30) includes: a third control valve (35) and a fourth control valve (36), wherein the third control valve (35) is communicated with the inlets of the high-temperature functional accessory, the low-temperature functional accessory, and the second auxiliary radiator (32), respectively; and the fourth control valve (36) is communicated with the outlets of the high-temperature functional accessory, the low-temperature functional accessory, and the second auxiliary radiator (32), respectively.

5. The thermal management system according to claim 4, characterized in that: The auxiliary radiator assembly (30) further includes: a first multi-way pipe (37), the first multi-way pipe (37) being respectively connected to the first control valve (33), the third control valve (35), the high-temperature radiator (21), and the high-temperature functional accessories; and The auxiliary radiator assembly (30) further includes a second multi-way pipe (38), wherein the second multi-way pipe (38) is respectively connected to the first control valve (33), the third control valve (35), the low-temperature radiator (11), and the low-temperature functional accessories.

6. The thermal management system according to claim 4, characterized in that: The auxiliary radiator assembly (30) further includes: a third multi-way pipe (39), the third multi-way pipe (39) being respectively connected to the second control valve (34), the fourth control valve (36), the high-temperature radiator (21), and the high-temperature functional accessories; and The auxiliary radiator assembly (30) further comprises a fourth multi-way pipe (40), wherein the fourth multi-way pipe (40) is respectively connected to the second control valve (34), the fourth control valve (36), the low-temperature radiator (11), and the low-temperature functional accessories.

7. The thermal management system according to claim 1, wherein: Also includes: An air conditioning system (50) is provided, the air conditioning system (50) comprising: a compressor (51), a condenser (52), an evaporator (53) and a first heat exchanger (54), wherein the compressor (51) and the condenser (52) are connected in series with each other, and the evaporator (53) and the first heat exchanger (54) are connected in parallel with each other and in series with the compressor (51), and the first heat exchanger (54) and the low-temperature functional accessory are connected in parallel.

8. The thermal management system according to claim 1, wherein: Also includes: A heating system (60) includes a heating core (61) and a second heat exchanger (62), wherein the second heat exchanger (62) and the heating core (61) are arranged in series and in parallel with the low-temperature functional accessory.

9. The thermal management system according to claim 8, characterized in that: The high-temperature heat dissipation circuit (20) further comprises a multi-way valve (71), wherein the multi-way valve (71) is connected between the high-temperature functional accessory and the warm air core (61).

10. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 9.

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