Thermal management system and vehicle

Abstract

The application discloses a kind of thermal management system and vehicle, and the thermal management system includes first control valve, second control valve and air conditioning system.The high-pressure heat exchange circuit, radiator circuit, battery heat exchange circuit, heat exchanger circuit and heating circuit are communicated on the first control valve, and the first control valve selectively communicates one or more of high-pressure heat exchange circuit, radiator circuit, battery heat exchange circuit, heat exchanger circuit and heating circuit.The two ends of second control valve and the two ends of battery heat exchange circuit are communicated, and the other end of second control valve and heating circuit are communicated, and the other end of second control valve and heat exchanger circuit are communicated.The air conditioning system and heating circuit and / or heat exchanger circuit exchange heat.By using the first control valve and the second control valve to control the flow direction of coolant, reduce the situation that coolant flows through the components that do not need temperature adjustment, reduce the idle condition of heat exchanger circuit in partial working condition, improve the utilization rate of heat exchanger circuit, simplify the thermal management control strategy, and reduce the weight of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle thermal management, in particular to a thermal management system and a vehicle. BACKGROUND

[0002] The pure electric thermal management architecture, simply speaking, is a control system of heat inside an electric vehicle, which involves battery thermal management, drive motor cooling, air conditioning system, passenger cabin temperature regulation and other subsystems.

[0003] In the related art, in order to ensure more functions, the circulation mode of the integrated architecture of the cooling liquid side of the pure electric thermal management system is more and more, various control valves are increased, the number of cooling liquid circulation system parts is large, the waterway is complex, and the whole vehicle is heavy. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a thermal management system, which uses a first control valve and a second control valve to control the flow direction of the cooling liquid, reduces the situation that the cooling liquid flows through the parts that do not need to be controlled by the thermal management, improves the utilization rate of the heat exchanger circuit, simplifies the thermal management strategy, and reduces the weight of the whole vehicle.

[0005] According to the thermal management system of the first aspect of the present application, the first control valve is connected with the high-pressure heat exchange circuit, the radiator circuit, the battery heat exchange circuit, the heat exchanger circuit and the heating circuit, and selectively connects one or more of the high-pressure heat exchange circuit, the radiator circuit, the battery heat exchange circuit, the heat exchanger circuit and the heating circuit; the second control valve is connected with both ends of the battery heat exchange circuit, and the other end of the second control valve is connected with the heating circuit and the heat exchanger circuit.

[0006] According to the thermal management system of the present application, the first control valve and the second control valve are used to control the flow direction of the cooling liquid, which reduces the situation that the cooling liquid flows through the parts that do not need to be controlled by the thermal management, and also reduces the idle condition of the heat exchanger circuit in some working conditions, improves the utilization rate of the heat exchanger circuit, simplifies the thermal management control strategy, and reduces the weight of the whole vehicle.

[0007] According to some embodiments of the present application, the radiator circuit comprises a radiator, one end of the radiator is connected with the heat exchanger circuit, the heating circuit and the first control valve, and the other end of the radiator is connected with the first control valve.

[0008] According to some embodiments of the present application, the heat sink circuit comprises a first multi-pass pipe, one end of the first multi-pass pipe is communicated with the other end of the heat sink, and the other two ends of the first multi-pass pipe are communicated with two ends of the first control valve respectively.

[0009] According to some embodiments of the present application, the thermal management system further comprises a first branch, one end of the first branch is communicated with the first control valve, and the other end is communicated with one end of the heat sink; and the thermal management system further comprises a second branch, the second branch is connected between the heating circuit and the first control valve.

[0010] According to some embodiments of the present application, the heating circuit comprises a condenser, an electric heater and a heater core, the electric heater and the condenser are connected in series, one end of the condenser is communicated with the first control valve and the heater core, the other end of the condenser is communicated with the electric heater, and the condenser exchanges heat with the air conditioning system.

[0011] According to some embodiments of the present application, one end of the heat exchanger circuit is communicated with the first control valve and the battery heat exchange circuit, and the other end of the heat exchanger circuit is communicated with the heat sink circuit, the first control valve and the second control valve.

[0012] According to some embodiments of the present application, a first one-way valve is arranged between one end of the heat exchanger circuit and the battery heat exchange circuit; and a second one-way valve is arranged between the other end of the heat exchanger circuit and the heat sink circuit and the first control valve.

[0013] According to some embodiments of the present application, one end of the battery heat exchange circuit is communicated with one end of the first control valve, and the other end of the battery heat exchange circuit is communicated with the other end of the second control valve and the first control valve.

[0014] According to some embodiments of the present application, the second control valve is a proportional control valve.

[0015] The vehicle according to the second aspect of the embodiments of the present application comprises the thermal management system.

[0016] The embodiments of the present application have the following beneficial effects: the first control valve and the second control valve are used to control the flow direction of the cooling liquid, so that the cooling liquid does not flow through the components that do not need to be controlled by the thermal management, the idle condition of the heat exchanger circuit in some working conditions is reduced, the utilization rate of the heat exchanger circuit is improved, the thermal management control strategy is simplified, and the weight of the vehicle is reduced.

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

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

[0019] Figure 1 is a schematic diagram of a heat management system embodiment one according to an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of a working mode one of a heat management system embodiment one according to an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of a working mode two of a heat management system embodiment one according to an embodiment of the present application;

[0022] Figure 4 is a schematic diagram of a working mode three of a heat management system embodiment one according to an embodiment of the present application;

[0023] Figure 5 is a schematic diagram of a working mode four of a heat management system embodiment one according to an embodiment of the present application;

[0024] Figure 6 is a schematic diagram of a working mode five of a heat management system embodiment one according to an embodiment of the present application;

[0025] Figure 7 is a schematic diagram of a working mode six of a heat management system embodiment one according to an embodiment of the present application;

[0026] Figure 8 is a schematic diagram of a working mode seven of a heat management system embodiment one according to an embodiment of the present application;

[0027] Figure 9 is a schematic diagram of a working mode eight of a heat management system embodiment one according to an embodiment of the present application;

[0028] Figure 10 is a schematic diagram of a working mode nine of a heat management system embodiment one according to an embodiment of the present application;

[0029] Figure 11 is a schematic diagram of a heat management system embodiment two according to an embodiment of the present application.

[0030] REFERENCE NUMERALS:

[0031] 100, heat management system;

[0032] 10, air conditioning system;

[0033] 20, high pressure heat exchange circuit; 21, motor; 22, motor controller;

[0034] 30, battery heat exchange circuit; 31, battery pack; 32, first water pump;

[0035] 40, radiator circuit; 41, radiator; 42, first multi-way pipe; 43, second water pump;

[0036] 50, heat exchanger circuit; 51, heat exchanger;

[0037] 60, heating circuit; 61, condenser; 62, electric heater; 63, warm air core; 64, third water pump;

[0038] 71, first control valve; 72, second control valve; 73, first branch; 74, second branch; 75, first check valve; 76, second check valve; 77, third check valve; 78, fourth check valve. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below.

[0040] The embodiments of the present application are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and the embodiments of the present application are described in detail below. Figures 1-11 The heat management system 100 according to the embodiments of the present application is described below, and the present application also proposes a vehicle.

[0041] Referring to Figure 1 The heat management system 100 according to the embodiments of the present application is described below, and the present application also proposes a vehicle.

[0042] The first control valve 71 is connected to the high-pressure heat exchange circuit 20, the radiator circuit 40, the battery heat exchange circuit 30, the heat exchanger circuit 50, and the heating circuit 60, and selectively communicates one or more of the high-pressure heat exchange circuit 20, the radiator circuit 40, the battery heat exchange circuit 30, the heat exchanger circuit 50, and the heating circuit 60.

[0043] In this way, the heat of the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, and the heating circuit 60 can be circulated through the first control valve 71, and under the control of the vehicle controller, the heat can be circulated between different circuits or different devices according to the requirements of the heat management mode of the vehicle, and different working modes can be flexibly selected in different use scenarios, avoiding frequent use of the same heat source and improving the efficiency of the system heat management.

[0044] The heat management system 100 controls multiple circuits using the first control valve 71, each of which does not interfere with each other, and can be selected according to the vehicle condition to exchange heat with the corresponding circuit by opening and closing the valve port of the first control valve 71, without too many components participating in each working mode, which can avoid the situation that some components do not need to be heat managed under certain working modes, reduce heat loss, reduce flow resistance under various modes, and improve energy utilization. And save the internal space of the vehicle, provide more possibilities for the subsequent loading of new functions and new technologies.

[0045] Specifically, the first control valve 71 can be a nine-way valve, and the refrigerant flows in the air conditioning system 10, the high-pressure heat exchange circuit 20, the battery heat exchange circuit 30, the radiator circuit 40, the heat exchanger circuit 50, the heating circuit 60 and the cooling liquid in the circulation circuit. Further, the first control valve 71 includes a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port and a ninth valve port, which are respectively Figure 1 “1”, “2”, “3”, “4”, “5”, “6”, “7”, “8” and “9” in the figure.

[0046] The two ends of the second control valve 72 and the battery heat exchange circuit 30 are communicated, the other end of the second control valve 72 and the heating circuit 60 are communicated, and the other end of the second control valve 72 and the heat exchanger circuit 50 are communicated. Specifically, the second control valve 72 includes a tenth valve port, an eleventh valve port, a twelfth valve port and a thirteenth valve port, the tenth valve port and the heating circuit 60 are communicated, the eleventh valve port and the heat exchanger circuit 50 are communicated, and the twelfth valve port and the thirteenth valve port and the two ends of the battery heat exchange circuit 30 are communicated. Among them, the tenth valve port is “a” in the figure 1, the eleventh valve port is Figure 1 “b” in the figure, the twelfth valve port is Figure 1 “c” in the figure, and the thirteenth valve port is Figure 1 “d” in the figure.

[0047] By controlling the opening and closing of the valve ports of the first control valve 71 and the second control valve 72, the flow direction of the cooling liquid can be controlled, the number of components through which the cooling liquid flows under different working modes can be reduced, and the heat exchanger circuit 50 can be communicated with multiple other circuits through the second control valve 72, which can reduce the idle condition of the heat exchanger circuit 50 under some working conditions, and improve the utilization rate of the heat exchanger circuit 50.

[0048] The air conditioning system 10 and the heating circuit 60 and / or the heat exchanger circuit 50 exchange heat. Specifically, the air conditioning system 10 can exchange heat with the heat exchanger circuit 50 and the heating circuit 60, and the refrigerant flows in the air conditioning system 10, the refrigerant can absorb heat from the heat exchanger circuit 50, and also can release heat to the heating circuit 60, to realize heat transfer. As Figure 1As shown, the heat exchanger circuit 50 includes a heat exchanger 51, Figure 1 As shown, the heat exchanger 51 is in heat exchange with the air conditioning system 10, indicated by the dotted line.

[0049] Thus, the flow of the coolant is controlled by the first control valve 71 and the second control valve 72, the coolant is prevented from flowing through the components that do not need to be temperature-regulated, the idle condition of the heat exchanger circuit 50 in some operating conditions is avoided, the utilization rate of the heat exchanger circuit 50 is improved, the heat management control strategy is simplified, and the weight of the vehicle is reduced.

[0050] Referring to Figure 1 As shown, the radiator circuit 40 includes a radiator 41, one end of the radiator 41 is in communication with the heat exchanger circuit 50, the heating circuit 60 and the first control valve 71, and the other end of the radiator 41 is in communication with the first control valve 71. Specifically, one end of the radiator 41 is in communication with the output end of the heat exchanger circuit 50, the output end of the heating circuit 60 and the "8" valve port of the first control valve 71, and the other end of the radiator 41 is in communication with the "3" valve port and the "4" valve port of the first control valve 71. The high-temperature coolant flowing out of other circuits flows through the radiator 41 to be cooled, and the cooled coolant flows out of the radiator circuit 40.

[0051] In addition, the radiator circuit 40 includes a first multi-way pipe 42, one end of the first multi-way pipe 42 is in communication with the other end of the radiator 41, and the other two ends of the first multi-way pipe 42 are in communication with two ends of the first control valve 71, respectively. Specifically, the first multi-way pipe 42 can be a three-way pipe, one end of the first multi-way pipe 42 is in communication with the output end of the radiator 41, and the other two ends of the first multi-way pipe 42 are in communication with the "3" valve port and the "4" valve port of the first control valve 71, respectively. By arranging the first multi-way pipe 42, multiple flow modes of the coolant can be achieved, and more functions can be realized with a simple structure.

[0052] In addition, the radiator circuit 40 further includes a second water pump 43, which is used to drive the coolant in the radiator circuit 40 to flow.

[0053] In addition, the high-pressure heat exchange circuit 20 includes a motor 21 and a motor controller 22, and the motor 21 and the motor controller 22 are connected in series. The motor 21 and the motor controller 22 generate heat during operation, and the temperature of the coolant increases after heat exchange with the motor 21 and the motor controller 22, so that the heat can be transferred to achieve the function of cooling or heating other components. The output end of the high-pressure heat exchange circuit 20 is in communication with the "7" valve port of the first control valve 71, and the input end of the high-pressure heat exchange circuit 20 is in communication with the "5" valve port of the first control valve 71.

[0054] Referring to Figure 1As shown, the heat management system 100 further comprises a first branch 73, one end of the first branch 73 is communicated with the first control valve 71, and the other end is communicated with one end of the radiator 41, and the heat management system 100 further comprises a second branch 74, the second branch 74 is connected between the heating circuit 60 and the first control valve 71. Specifically, one end of the first branch 73 is communicated with the "8" valve port of the first control valve 71, and the other end is communicated with the input end of the radiator 41, the second branch 74 is connected between the heating circuit 60 and the "2" valve port of the first control valve 71, and the first branch 73 and the second branch 74 can increase the flow mode of the coolant, and more functions can be realized with a simple structure.

[0055] With reference to Figure 1 As shown, the heating circuit 60 comprises a condenser 61, an electric heater 62 and a heater core 63, the electric heater 62 and the condenser 61 are connected in series, one end of the condenser 61 is communicated with the first control valve 71 and the heater core 63, and the other end of the condenser 61 is communicated with the electric heater 62, and the condenser 61 exchanges heat with the air conditioning system 10. Specifically, one end of the condenser 61 is communicated with the "2" valve port of the first control valve 71 and the output end of the heater core 63, and the other end of the condenser 61 is communicated with the electric heater 62.

[0056] The coolant can flow through the condenser 61 to exchange heat and then release heat at the heater core 63 to realize the function of heating the passenger compartment, according to the vehicle condition, when the air conditioning system 10 is not started or the heat of the condenser 61 is insufficient, the electric heater 62 is started to heat the passenger compartment, and when the heating is not needed or the heat of the condenser 61 meets the heating demand of the passenger compartment, the electric heater 62 is turned off.

[0057] In addition, the heating circuit 60 further comprises a third water pump 64, the third water pump 64 is used to drive the coolant in the heating circuit 60 to flow.

[0058] With reference to Figure 1 As shown, one end of the heat exchanger circuit 50 is communicated with the first control valve 71 and the battery heat exchange circuit 30, and the other end of the heat exchanger circuit 50 is communicated with the radiator circuit 40, the first control valve 71 and the second control valve 72. Specifically, one end of the heat exchanger circuit 50 is communicated with the "9" valve port of the first control valve 71 and the battery heat exchange circuit 30, and the other end of the heat exchanger circuit 50 is communicated with the radiator circuit 40, the "3" valve port, the "4" valve port or the "6" valve port of the first control valve 71 and the "b" valve port of the second control valve 72. Thus, the heat exchanger circuit 50 and other circuits are communicated, and the air conditioning system 10 and the heat exchanger 51 are communicated, so that the heat exchanger 51 exchanges heat with the air conditioning system 10, and the heat can be transmitted to other circuits.

[0059] Furthermore, a first one-way valve 75 is provided between one end of the heat exchanger circuit 50 and the battery heat exchange circuit 30. By providing the first one-way valve 75, it is possible to control whether the battery heat exchange circuit 30 is in communication with the heat exchanger circuit 50. A second one-way valve 76 is provided between the other end of the heat exchanger circuit 50, the radiator circuit 40, and the first control valve 71. By providing the second one-way valve 76, it is possible to control whether the heat exchanger circuit 50 is in communication with the radiator circuit 40 or the first control valve 71.

[0060] Thermal management system 100 also includes a third check valve 77 and a fourth check valve 78. Third check valve 77, located between electric heater 62 and heater core 63, controls whether coolant exchanging heat at condenser 61 enters heater core 63, thereby heating the passenger compartment. Fourth check valve 78, located between heating circuit 60 and radiator circuit 40, controls whether coolant in heating circuit 60 passes through radiator circuit 40 to dissipate heat.

[0061] Reference Figure 11 As shown, one end of the battery heat exchange circuit 30 is connected to one end of the first control valve 71, and the other end of the battery heat exchange circuit 30 is connected to the other end of the second control valve 72 and the first control valve 71. The battery heat exchange circuit 30 includes a first water pump 32 and a battery pack 31. The first water pump 32 and the battery pack 31 are connected in series. One end of the battery heat exchange circuit 30 is connected to one end of the first control valve 71. The output end of the battery heat exchange circuit 30 is connected to the valve port "c" of the second control valve 72 and the valve port "1" of the first control valve 71.

[0062] Furthermore, the second control valve 72 is a proportional control valve. Specifically, when the valve ports "a", "b", and "d" of the second control valve 72 are connected, the opening ratio of the valve ports "a" and "b" can be adjusted to control the flow rate of the coolant. When the valve ports "b", "c", and "d" of the second control valve 72 are connected, the opening ratio of the valve ports "b" and "c" can be adjusted to control the flow rate of the coolant.

[0063] In addition, refer to Figures 2-10 As shown, in some embodiments, the first control valve 71 can be set as an eight-way valve, and the corresponding thermal management function and mode remain unchanged.

[0064] Refer to the following Figure 2 The operating mode of the thermal management system 100 according to the embodiment of the present invention is described.

[0065] Reference Figure 3 As shown, the working mode 1 of the thermal management system 100 according to the embodiment of the present invention is:

[0066] The "2" valve port and the "3" valve port of the first control valve 71 are communicated, the "5" valve port and the "6" valve port are communicated, the "7" valve port and the "8" valve port are communicated, the "b" valve port and the "d" valve port of the second control valve 72 are communicated, the first one-way valve 75 and the fourth one-way valve 78 are opened, and the remaining valve ports are closed, so that the functions of cooling the air conditioner refrigerant, cooling the high-pressure components and cooling the battery pack 31 are realized.

[0067] The cooling liquid flows in the following way: the second water pump 43→the radiator 41→the first control valve 71→the condenser 61→the fourth one-way valve 78→the radiator 41→the second water pump 43.

[0068] The cooling liquid flows in the following way: the second water pump 43→the radiator 41→the first control valve 71→the condenser 61→the fourth one-way valve 78→the first control valve 71→the motor controller 22→the motor 21→the first control valve 71→the radiator 41→the second water pump 43.

[0069] The cooling liquid flows in the following way: the first water pump 32→the battery pack 31→the heat exchanger 51→the second control valve 72→the first water pump 32.

[0070] The cooling liquid is cooled to low-temperature cooling liquid at the radiator 41, and absorbs the heat released by the refrigerant in the air conditioning system 10 through the condenser 61, so that the temperature of the refrigerant is reduced.

[0071] The cooling liquid in the high-pressure heat exchange circuit 20 carries the heat of the high-pressure components and is combined with the high-temperature cooling liquid in the heating circuit 60, part of which is radiated at the radiator 41 and continues to flow to the condenser 61, and part of which flows to the high-pressure heat exchange circuit 20 to continue to cool the high-pressure components, so that the high-pressure component cooling is realized. The electric heater 62 is not opened.

[0072] The cooling liquid exchanges heat with the battery pack 31 and the temperature is increased, and exchanges heat with the air conditioning system 10 through the heat exchanger 51, so that the cooling liquid becomes low-temperature cooling liquid and continues to circulate to cool the battery pack 31. When the battery pack 31 has no cooling requirement, the "b" valve port and the "d" valve port of the second control valve 72 can be directly closed.

[0073] Referring to Figure 4 The working mode two of the thermal management system 100 of the embodiment of the present application is as follows:

[0074] The "2" valve port and the "3" valve port of the first control valve 71 are communicated, the "4" valve port and the "5" valve port are communicated, the "7" valve port and the "8" valve port are communicated, the "b" valve port and the "d" valve port of the second control valve 72 are communicated, the first one-way valve 75 and the fourth one-way valve 78 are opened, and the remaining valve ports are closed, so that the functions of cooling the air conditioner refrigerant, cooling the high-pressure components and cooling the battery pack 31 are realized.

[0075] Cooling liquid flow: second water pump 43→radiator 41→first control valve 71→condenser 61→fourth one-way valve 78→radiator 41→second water pump 43;

[0076] Second water pump 43→radiator 41→first control valve 71→motor controller 22→motor 21→first control valve 71→radiator 41→second water pump 43;

[0077] First water pump 32→battery pack 31→heat exchanger 51→second control valve 72→first water pump 32.

[0078] When the ambient temperature is too high or the cooling liquid at the high-pressure components is overheated, the radiator 41 cools the condenser 61 and the high-pressure components at the same time.

[0079] The cooling liquid is cooled to low-temperature cooling liquid at the radiator 41, absorbs the heat released by the refrigerant in the air conditioning system 10 through the condenser 61, and the temperature of the refrigerant is reduced.

[0080] The cooling liquid in the high-pressure heat exchange circuit 20 carries the heat of the high-pressure components and converges with the high-temperature cooling liquid in the heating circuit 60, and is cooled at the radiator 41. The low-temperature cooling liquid after cooling flows to the high-pressure heat exchange circuit 20 to continue cooling the high-pressure components, and part of it flows to the condenser 61 to reduce the temperature of the refrigerant. Among them, the electric heater 62 is not turned on.

[0081] The cooling liquid exchanges heat through the battery pack 31, the temperature rises, exchanges heat with the air conditioning system 10 through the heat exchanger 51, becomes low-temperature cooling liquid, and continues to circulate to cool the battery pack 31. Among them, when the battery pack 31 has no cooling demand, the "b" valve port and the "d" valve port of the second control valve 72 can be directly closed.

[0082] Referring to Figure 5 The working mode three of the thermal management system 100 of the embodiment of the present application is shown in FIG. 8.

[0083] The "5" valve port and the "6" valve port of the first control valve 71 are communicated, the "7" valve port and the "9" valve port are communicated, the "2" valve port and the "1" valve port are communicated, the "a" valve port, the "c" valve port and the "d" valve port of the second control valve 72 are communicated, the second one-way valve 76 and the third one-way valve 77 are opened, and the remaining valve ports are closed., realize the function of heat pump heating and battery pack 31 heating under low temperature condition.

[0084] Cooling liquid flow: second water pump 43→first control valve 71→motor controller 22→motor 21→first control valve 71→heat exchanger 51→second one-way valve 76→second water pump 43;

[0085] Condenser 61→third water pump 64→electric heater 62→third one-way valve 77→warm air core 63→condenser 61;

[0086] Condenser 61 → Third water pump 64 → Electric heater 62 → Second control valve 72 → First water pump 32 → Battery pack 31 → First control valve 71 → Condenser 61.

[0087] The cooling liquid in the high-pressure heat exchange circuit 20 exchanges heat with the high-pressure components and the heat exchanger 51, transfers the heat to the air conditioning system 10, and the low-temperature cooling liquid after cooling flows to the high-pressure heat exchange circuit 20 to continue cooling the high-pressure components.

[0088] The air conditioning system 10 refrigerant releases heat at the condenser 61, the water temperature of the cooling liquid side rises, flows into the heating core 63 to release heat, and realizes the heating of the passenger compartment.

[0089] Among them, the electric heater 62 can be selected according to the vehicle condition whether to start or not, and the other working modes are the same below.

[0090] If the battery pack 31 has a heating demand at the same time, adjust the opening ratio between the "a" and "c" valve ports of the second control valve 72, and the first water pump 32 will draw the hot water in the heating circuit 60 to the battery heat exchange circuit 30, and simultaneously meet the battery heating demand, the opening ratio between the "a" and "c" valve ports can control the hot and cold water flow ratio in the battery heat exchange circuit 30, to realize different water temperature target demand. After the battery pack 31 does not need to be heated, the "c" valve port and the "d" valve port of the second control valve 72 are connected, the cooling liquid circulates in the battery heat exchange circuit 30, and the high-temperature cooling liquid in the heating circuit 60 cannot enter, stopping the supply of high-temperature cooling liquid.

[0091] Referring to Figure 6 The working mode four of the thermal management system 100 of the embodiment of the present application is shown.

[0092] The "4" valve port and the "5" valve port of the first control valve 71 are connected, the "7" valve port and the "9" valve port are connected, the "2" valve port and the "1" valve port are connected, the "a" valve port, the "c" valve port and the "d" valve port of the second control valve 72 are connected, the second one-way valve 76 and the third one-way valve 77 are opened, and the remaining valve ports are closed. When the air conditioning heating demand is high, the functions of heat pump heating and battery pack 31 heating are realized.

[0093] Cooling liquid flow direction: Second water pump 43 → Radiator 41 → First control valve 71 → Motor controller 22 → Motor 21 → First control valve 71 → Heat exchanger 51 → Second one-way valve 76 → Second water pump 43;

[0094] Condenser 61 → Third water pump 64 → Electric heater 62 → Third one-way valve 77 → Heating core 63 → Condenser 61;

[0095] Condenser 61 →third water pump 64 →electric heater 62 →second control valve 72 →first water pump 32 →battery pack 31 →first control valve 71 →condenser 61 .

[0096] When the heating demand of the air-conditioning system 10 is very high, the heat absorption capacity of the heat exchanger 51 increases, causing the coolant temperature of the high-pressure heat exchange loop 20 to be lower than the ambient temperature. The coolant in the high-pressure heat exchange loop 20 carries the heat of the high-pressure components to exchange heat with the heat exchanger 51, and transfers the heat to the air-conditioning system 10, but it is not enough to meet the needs of the air-conditioning system 10. The coolant also needs to pass through the radiator 41 to absorb the ambient temperature for use by the air-conditioning system 10.

[0097] The refrigerant in the air conditioning system 10 releases heat at the condenser 61 , the water temperature on the coolant side rises, and flows into the heater core 63 to release heat, thereby heating the passenger compartment.

[0098] If the battery pack 31 requires heating, the opening ratio between the "a" and "c" ports of the second control valve 72 is adjusted, and the first water pump 32 pumps hot water from the heating circuit 60 to the battery heat exchange circuit 30 to simultaneously meet the battery heating demand. The opening ratio between the "a" and "c" ports controls the flow ratio of cold and hot water in the battery heat exchange circuit 30 to achieve different water temperature targets. When the battery pack 31 no longer needs to be heated, the "c" and "d" ports of the second control valve 72 can be controlled to communicate, allowing coolant to circulate in the battery heat exchange circuit 30, preventing the high-temperature coolant in the heating circuit 60 from entering, and thus stopping the supply of high-temperature coolant.

[0099] Reference Figure 7 As shown, the fifth working mode of the thermal management system 100 according to the embodiment of the present invention is:

[0100] The "4" valve port and the "5" valve port of the first control valve 71 are connected, the "7" valve port and the "9" valve port are connected, the "2" valve port and the "3" valve port are connected, the "c" valve port and the "d" valve port of the second control valve 72 are connected, the second one-way valve 76, the third one-way valve 77 and the fourth one-way valve 78 are open, and the remaining valve ports are closed. When the demand for air conditioning and heating is low, the heat pump heating, air conditioning refrigerant cooling and battery pack 31 temperature equalization functions are realized.

[0101] Coolant flow direction: second water pump 43 → radiator 41 → first control valve 71 → motor controller 22 → motor 21 → first control valve 71 → heat exchanger 51 → second one-way valve 76 → second water pump 43;

[0102] Condenser 61 → third water pump 64 → electric heater 62 → third one-way valve 77 → heater core 63 → condenser 61;

[0103] Condenser 61→ Third water pump 64→ Electric heater 62→ Fourth one-way valve 78→ Second water pump 43→ Radiator 41→ First control valve 71→ Condenser 61;

[0104] First water pump 32→ Battery pack 31→ Second control valve 72→ First water pump 32.

[0105] When the heating demand of the air conditioning system 10 is low, the heat exchanger 51 is in a minimum power operation state, but the heat absorbed from the high-pressure heat exchange circuit 20 is still greater than the heating demand of the passenger compartment, and the high-temperature cooling liquid at the condenser 61 can be small-power radiated through the radiator 41, reducing the heat absorbed by the heat exchanger 51.

[0106] The cooling liquid in the high-pressure heat exchange circuit 20 exchanges heat with the heat exchanger 51, transfers heat to the air conditioning system 10, and the low-temperature cooling liquid flows to the high-pressure heat exchange circuit 20 for further cooling of the high-pressure components.

[0107] The air conditioning system 10 refrigerant releases heat at the condenser 61, the water temperature on the cooling liquid side rises, part of it flows into the heater core 63 to release heat, achieving passenger compartment heating, and the other part is radiated at the radiator 41 and then flows back to the condenser 61, reducing the cooling liquid temperature and meeting the passenger compartment heating demand.

[0108] The cooling liquid circulates between the battery heat exchange circuit 30 and the second control valve 72, maintaining the temperature uniformity between each cell or module of the battery pack 31, avoiding performance degradation, safety hazards, and shortened life caused by excessive temperature difference.

[0109] Referring to Figure 8 The working mode six of the thermal management system 100 of the embodiment of the present application is as follows:

[0110] The "5" valve port and the "6" valve port of the first control valve 71 are communicated, the "7" valve port and the "8" valve port are communicated, the "b" valve port and the "d" valve port of the second control valve 72 are communicated, the first one-way valve 75 and the third one-way valve 77 are opened, and the remaining valve ports are closed, realizing the functions of heat pump heating, high-pressure component temperature equalization, and battery pack 31 cooling.

[0111] Cooling liquid flow: Second water pump 43→ First control valve 71→ Motor controller 22→ Motor 21→ First control valve 71→ Second water pump 43;

[0112] Condenser 61→ Third water pump 64→ Electric heater 62→ Third one-way valve 77→ Heater core 63→ Condenser 61;

[0113] First water pump 32→ Battery pack 31→ First one-way valve 75→ Heat exchanger 51→ Second control valve 72→ First water pump 32.

[0114] The cooling liquid circulates between the high-pressure heat exchange circuit 20 and the first control valve 71, maintains the temperature uniformity between the high-pressure components, avoids the performance decline, the security hidden danger and the shortened life and the like problems caused by the too large temperature difference.

[0115] The cooling liquid carries the heat of the battery pack 31 and exchanges heat with the heat exchanger 51, and the cooling liquid temperature drops to cool the battery pack 31.

[0116] The high-temperature refrigerant of the air conditioning system 10 releases heat at the condenser 61, the water temperature of the cooling liquid side is raised, flows into the warm air core 63 to release heat, and realizes the heating of the passenger compartment.

[0117] Referring to Figure 9 The working mode seven of the thermal management system 100 of the embodiment of the present application is as follows:

[0118] The “5” valve port and the “6” valve port of the first control valve 71 are communicated, the “7” valve port and the “9” valve port are communicated, the “b” valve port and the “d” valve port of the second control valve 72 are communicated, the first one-way valve 75, the second one-way valve 76 and the third one-way valve 77 are opened, and the remaining valve ports are closed, realizing the heating of the battery pack 31 by the heat pump heating and the motor 21 waste heat or active heat generation.

[0119] The cooling liquid flow direction is: the second water pump 43→the first control valve 71→the motor controller 22→the motor 21→the first control valve 71→the heat exchanger 51→the second one-way valve 76→the second water pump 43;

[0120] The condenser 61→the third water pump 64→the electric heater 62→the third one-way valve 77→the warm air core 63→the condenser 61;

[0121] The first water pump 32→the battery pack 31→the first one-way valve 75→the heat exchanger 51→the second control valve 72→the first water pump 32.

[0122] When the air conditioner is turned on, the cooling liquid carries the heat of the high-pressure components and the battery and exchanges heat with the heat exchanger 51, the refrigerant temperature rises, releases heat at the condenser 61, the water temperature of the cooling liquid side is raised, flows into the warm air core 63 to release heat, and realizes the heating of the passenger compartment.

[0123] When the air conditioner is turned off, the battery pack 31 is heated by the waste heat of the high-pressure components during driving or the heat generated by the motor 21. The cooling liquid flows from the high-pressure heat exchange circuit 20 and the battery heat exchange circuit 30 to the heat exchanger circuit 50, and is mixed at the heat exchanger circuit 50, but does not exchange heat with the heat exchanger 51. The high-temperature cooling liquid carrying the waste heat of the high-pressure components or the heat generated by the motor 21 is mixed with the cooling liquid in the battery heat exchange circuit 30, and the cooling liquid flowing into the battery heat exchange circuit 30 has a higher temperature than before, which can heat the battery pack 31.

[0124] Referring toFigure 10 As shown in FIG. 8, the working mode eight of the heat management system 100 according to the embodiment of the present application is described as follows:

[0125] The "5" valve port and the "6" valve port of the first control valve 71 are communicated, the "7" valve port and the "8" valve port are communicated, the "1" valve port and the "2" valve port are communicated, the "a" valve port, the "c" valve port and the "d" valve port of the second control valve 72 are communicated, the third one-way valve 77 is opened, and the remaining valve ports are closed, so that the functions of the heat pump heating, the high-pressure component temperature equalization and the heating of the battery pack 31 are realized.

[0126] The cooling liquid flows as follows: the second water pump 43→the first control valve 71→the motor controller 22→the motor 21→the first control valve 71→the second water pump 43;

[0127] The cooling liquid flows as follows: the condenser 61→the third water pump 64→the electric heater 62→the third one-way valve 77→the warm air core 63→the condenser 61.

[0128] The cooling liquid flows as follows: the condenser 61→the third water pump 64→the electric heater 62→the second control valve 72→the first water pump 32→the battery pack 31→the first control valve 71→the condenser 61.

[0129] The cooling liquid circulates between the high-pressure heat exchange circuit 20 and the first control valve 71, so that the temperature uniformity among the high-pressure components is maintained, and problems such as performance decline, safety hazards and shortened service life caused by excessive temperature difference are avoided.

[0130] The air conditioning system 10 generates heat by the compressor to increase the temperature of the refrigerant, the refrigerant releases heat at the condenser 61, the water temperature on the cooling liquid side is increased, a part of the cooling liquid flows into the warm air core 63 to release heat, so that the passenger compartment is heated, and the other part of the cooling liquid flows into the battery heat exchange circuit 30 to heat the battery pack 31.

[0131] After the heating of the battery pack 31 is completed, the second control valve 72 is switched to the state that the "a" valve port and the "c" valve port are communicated, so that the high-temperature cooling liquid in the heating circuit 60 is prevented from flowing out.

[0132] Reference ​ As shown in FIG. 9, the working mode nine of the heat management system 100 according to the embodiment of the present application is described as follows:

[0133] The "4" valve port and the "5" valve port of the first control valve 71 are communicated, the "7" valve port and the "9" valve port are communicated, the "2" valve port and the "3" valve port are communicated, the "b" valve port and the "d" valve port of the second control valve 72 are communicated, the first one-way valve 75, the second one-way valve 76, the third one-way valve 77 and the fourth one-way valve 78 are all opened, and the remaining valve ports are closed, so that the functions of the heat pump heating or the high-pressure component cooling and the battery pack 31 cooling are realized.

[0134] Cooling liquid flow direction: second water pump 43→radiator 41→motor controller 22→motor 21→first control valve 71→heat exchanger 51→second one-way valve 76→second water pump 43;

[0135] First water pump 32→battery pack 31→heat exchanger 51→second control valve 72→first water pump 32;

[0136] Condenser 61→third water pump 64→electric heater 62→third one-way valve 77→warm air core 63→condenser 61;

[0137] Condenser 61→third water pump 64→electric heater 62→radiator 41→first control valve 71→condenser 61.

[0138] When the air conditioner is turned on, the cooling liquid carries the heat of the high-pressure components and the battery and exchanges heat with the heat exchanger 51, the temperature of the refrigerant rises, and the cooling liquid side is cooled in the condenser 61, the water temperature rises, and the cooling liquid flows into the warm air core 63 to release heat, realizing the heating of the passenger compartment.

[0139] When the air conditioner is turned off, the cooling liquid is cooled in the radiator 41 to become low-temperature cooling liquid, and the low-temperature cooling liquid cools the high-pressure components first, and the cooling liquid flows from the high-pressure heat exchange circuit 20 and the battery heat exchange circuit 30 to the heat exchanger circuit 50, and mixes and exchanges heat in the heat exchanger circuit 50, but does not exchange heat with the heat exchanger 51. At this time, the ambient temperature is low, for example, the low-temperature fast charging working condition, and the air conditioner does not need to be used, and the cooling capacity of the radiator 41 meets the cooling requirements of the high-pressure components and the battery pack 31, and the temperature of the cooling liquid flowing to the battery pack 31 after mixing is reduced, so that the battery pack 31 is cooled. The radiator 41 provides cooling capacity for the battery pack 31, realizing the battery pack 31 cooling function with lower energy consumption.

[0140] The vehicle according to the second aspect of the present application comprises the thermal management system 100.

[0141] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0142] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example.

[0143] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to these embodiments. Rather, it is the intention that modifications, changes, substitutions, and variations be made to the embodiments in keeping with the principles and spirit of the application. The scope of the application is to be limited only by the claims and their equivalents.

Claims

1. A thermal management system, characterized in that: include: a first control valve (71), wherein the first control valve (71) is connected to a high-pressure heat exchange circuit (20), a radiator circuit (40), a battery heat exchange circuit (30), a heat exchange circuit (50), and a heating circuit (60), and the first control valve (71) selectively connects one or more of the high-pressure heat exchange circuit (20), the radiator circuit (40), the battery heat exchange circuit (30), the heat exchange circuit (50), and the heating circuit (60); a second control valve (72), wherein both ends of the second control valve (72) are in communication with both ends of the battery heat exchange circuit (30), another end of the second control valve (72) is in communication with the heating circuit (60), and another end of the second control valve (72) is in communication with the heat exchanger circuit (50); An air conditioning system (10), wherein the air conditioning system (10) exchanges heat with the heating circuit (60) and / or the heat exchanger circuit (50); A first branch (73) and a second branch (74), one end of the first branch (73) is connected to the first control valve (71), and the other end is connected to one end of the radiator circuit, and the second branch (74) is connected between the heating circuit (60) and the first control valve (71); wherein, The radiator circuit (40) comprises: a radiator (41), one end of the radiator (41) is connected to the heat exchanger circuit (50), the heating circuit (60) and the first control valve (71), and the other end of the radiator (41) is connected to the first control valve (71); One end of the heat exchanger circuit (50) is in communication with the first control valve (71) and the battery heat exchange circuit (30), and the other end of the heat exchanger circuit (50) is in communication with the radiator circuit (40), the first control valve (71), and the second control valve (72); One end of the battery heat exchange circuit (30) is in communication with one end of the first control valve (71), and the other end of the battery heat exchange circuit (30) is in communication with the other end of the second control valve (72) and the first control valve (71).

2. The thermal management system according to claim 1, characterized in that The radiator circuit (40) comprises a first multi-way pipe (42), one end of the first multi-way pipe (42) being connected to the other end of the radiator (41), and the other two ends of the first multi-way pipe (42) being respectively connected to two ends of the first control valve (71).

3. The thermal management system according to claim 1, wherein: The heating circuit (60) includes: a condenser (61), an electric heater (62) and a warm air core (63); the electric heater (62) and the condenser (61) are connected in series; one end of the condenser (61) is connected to the first control valve (71) and the warm air core (63); the other end of the condenser (61) is connected to the electric heater (62); and the condenser (61) exchanges heat with the air conditioning system (10).

4. The thermal management system according to claim 1, wherein: A first one-way valve (75) is provided between one end of the heat exchanger circuit (50) and the battery heat exchange circuit (30); and, A second one-way valve (76) is provided between the other end of the heat exchanger circuit (50), the radiator circuit (40), and the first control valve (71).

5. The thermal management system according to claim 1, wherein: The second control valve (72) is a proportional regulating valve.

6. A vehicle, characterized in that: include: The thermal management system (100) according to any one of claims 1 to 5.

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