Vehicle Thermal Management System, Method and Related Devices

Abstract

Embodiments of the present application disclose a vehicle thermal management system, method, and related devices. The vehicle thermal management system provided by the embodiments of the present application includes an electric drive circuit, an intercooling circuit, an oil cooling circuit, and a battery circuit. A first heat exchanger is provided on the intercooling circuit and the electric drive circuit, and a second heat exchanger is provided on the oil cooling circuit and the electric drive circuit. The electric drive circuit can also be conducted to the battery circuit, enabling energy to be transferred and utilized among the intercooling circuit, the oil cooling circuit, the electric drive circuit, and the battery circuit, improving energy utilization efficiency and reducing the energy consumption of the entire vehicle. When heating the power battery is required, heat exchange can be carried out between the intercooling circuit and the oil cooling circuit and the electric drive circuit, and then the heat energy can be transported to the battery circuit to improve the battery's temperature rise efficiency. When the heat dissipation capabilities of the intercooling circuit and the oil cooling circuit themselves are insufficient, heat exchange can be carried out between the first heat exchanger and the second heat exchanger and the electric drive circuit, which can improve the heat dissipation efficiency and the heat energy utilization efficiency.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of vehicles, and in particular, to a vehicle thermal management system, a vehicle thermal management method, a computer-readable storage medium, and a control device. Background Art

[0002] Hybrid vehicles are a current mainstream form of new energy vehicle power. They mainly use an engine and a power battery as power sources and can be driven independently by a motor or an engine, or jointly driven by a motor and an engine. The engine of a hybrid vehicle is usually a turbocharged engine, and heat is generated when the turbine body and the intercooling system are working. The generator and the front motor are usually integrated and also generate heat when working. However, in traditional vehicles, especially hybrid vehicles, the utilization rate of thermal energy is limited, resulting in low energy efficiency, and when the power battery and the cockpit of the vehicle need to be heated, the heating speed is slow. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] To this end, a first aspect of the present invention provides a vehicle thermal management system.

[0005] A second aspect of the present invention provides a vehicle thermal management method.

[0006] A third aspect of the present invention provides a computer-readable storage medium.

[0007] A fourth aspect of the present invention provides a control device.

[0008] In view of this, according to a first aspect of the embodiments of the present application, a vehicle thermal management system is provided, including:

[0009] An electric drive circuit for dissipating heat from the motor of the vehicle;

[0010] An intercooling circuit for dissipating heat from the turbine of the vehicle;

[0011] A first heat exchanger disposed on the intercooling circuit and the electric drive circuit;

[0012] An oil cooling circuit for dissipating heat from the hybrid system of the vehicle;

[0013] A second heat exchanger disposed on the oil cooling circuit and the electric drive circuit;

[0014] A battery circuit for dissipating heat or heating the battery, and the battery circuit is connected to the electric drive circuit through a first control valve.

[0015] In a feasible implementation, the following are provided on the electric drive circuit:

[0016] A first pump body and a motor radiator, and the electric drive circuit flows through the motor assembly of the vehicle;

[0017] Wherein, the electric drive circuit includes:

[0018] A first series pipeline, the first series pipeline flows through the motor assembly, and the first heat exchanger, the second heat exchanger and the motor radiator are arranged on the first series pipeline;

[0019] A first parallel pipeline, which is connected to the first series pipeline and is in parallel with the motor heat exchanger;

[0020] A second control valve, which is arranged at the connection of the first series pipeline and the first parallel pipeline.

[0021] In a feasible implementation, the following are provided on the intercooling circuit:

[0022] A second pump body, an intercooling radiator and an intercooling water cooler, and the intercooling water cooler is used for cooling the intake or exhaust of the turbine;

[0023] Wherein, the intercooling circuit includes:

[0024] A second series pipeline, the second series pipeline flows through the turbine, the second pump body, the intercooling radiator and the intercooling water cooler, and the intercooling water cooler is in parallel with the turbine;

[0025] A second parallel pipeline, which is connected to the second series pipeline, the second parallel pipeline is in parallel with the intercooling radiator, and the second parallel pipeline is connected to the first heat exchanger;

[0026] A third control valve, which is arranged at the connection of the second series pipeline and the second parallel pipeline.

[0027] In a feasible implementation, the following are provided on the oil cooling circuit:

[0028] A third pump body and an oil cooler;

[0029] Wherein, the oil cooling circuit includes:

[0030] A third series pipeline, the third series pipeline flows through the third pump body, the oil cooler and the hybrid system;

[0031] A third parallel pipeline, which is connected to the third series pipeline, the third parallel pipeline is in parallel with the oil cooler, and the third parallel pipeline is connected to the second heat exchanger;

[0032] The fourth control valve is arranged at the connection of the third series pipeline and the third parallel pipeline.

[0033] In a feasible implementation manner, the following are arranged on the battery loop:

[0034] The fourth pump body and the heater;

[0035] Wherein, the battery loop includes:

[0036] The fourth series pipeline, and the fourth series pipeline flows through the fourth pump body, the heater and the power battery of the vehicle

[0037] The fourth parallel pipeline, which is connected to the fourth series pipeline, and the fourth parallel pipeline is in parallel with the power battery;

[0038] The first control valve is arranged on the fourth series pipeline.

[0039] In a feasible implementation manner, the vehicle thermal management system further includes:

[0040] The warm air loop is used for refrigerating or heating the cockpit of the vehicle;

[0041] The third heat exchanger is arranged on the battery loop and the warm air loop;

[0042] The fifth pump body and the warm air core are arranged on the warm air loop;

[0043] The warm air loop includes:

[0044] The fifth series pipeline, and the fifth series pipeline flows through the fifth pump body, the warm air core and the engine of the vehicle;

[0045] The fifth parallel pipeline, which is connected to the fifth series pipeline, and the fifth parallel pipeline is in parallel with the engine;

[0046] The fifth control valve is arranged at the connection of the fifth series pipeline and the fifth parallel pipeline.

[0047] In a feasible implementation manner, the vehicle thermal management system further includes:

[0048] The first temperature sensor is arranged on the electric drive loop;

[0049] The second temperature sensor is arranged on the intercooling loop;

[0050] The third temperature sensor is arranged on the oil cooling loop;

[0051] The fourth temperature sensor is arranged on the warm air loop.

[0052] According to a second aspect of an embodiment of the present application, a vehicle thermal management method is provided, which is applied to the vehicle thermal management system described in the above technical solution. The vehicle thermal management method includes:

[0053] Obtain at least one of the environmental temperature information, vehicle speed information, and engine load information of the vehicle;

[0054] Based on the obtained information, control the connection relationship between the intercooling circuit and the first heat exchanger; and / or

[0055] Based on the obtained information, control the connection relationship between the oil cooling circuit and the second heat exchanger; and / or;

[0056] Based on the obtained information, control the connection relationship between the battery circuit and the electric drive circuit.

[0057] According to a third aspect of an embodiment of the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, which implements the vehicle thermal management method described in the above technical solution.

[0058] According to a fourth aspect of an embodiment of the present application, a control device is provided, including:

[0059] A memory that stores a computer program;

[0060] A processor that executes the computer program;

[0061] Wherein, when the processor executes the computer program, it implements the vehicle thermal management method described in the above technical solution.

[0062] Compared with the prior art, the present invention at least includes the following beneficial effects: The vehicle thermal management system provided by the embodiment of the present application includes an electric drive circuit, an intercooling circuit, an oil cooling circuit, and a battery circuit. A first heat exchanger is provided on the intercooling circuit and the electric drive circuit, and a second heat exchanger is provided on the oil cooling circuit and the electric drive circuit. The electric drive circuit can also be conducted to the battery circuit, so that energy can be transferred and utilized between the intercooling circuit, the oil cooling circuit, the electric drive circuit, and the battery circuit, improving energy utilization efficiency and reducing the energy consumption of the whole vehicle. For example, when the vehicle is starting up and the power battery needs to be heated, the intercooling circuit and the oil cooling circuit can be used to exchange heat with the electric drive circuit, and then the heat energy can be transported to the battery circuit to improve the heating efficiency of the battery; when the heat dissipation capabilities of the intercooling circuit and the oil cooling circuit are insufficient, the first heat exchanger and the second heat exchanger can be used to exchange heat with the electric drive circuit, so that the electric drive circuit can assist the intercooling circuit and the oil cooling circuit in heat dissipation, improving the heat dissipation efficiency and the heat energy utilization rate. Description of the Drawings

[0063] Upon reading the following detailed description of the preferred embodiments, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0064] In the drawings:

[0065] Figure 1 is a schematic structural diagram of a vehicle thermal management system according to an embodiment provided by the present application;

[0066] Figure 2 is a schematic step flowchart of a vehicle thermal management method according to another embodiment provided by the present application;

[0067] Figure 3 is a structural block diagram of a computer-readable storage medium according to an embodiment provided by the present application;

[0068] Figure 4 is a structural block diagram of a control device according to an embodiment provided by the present application.

[0069] Among them, Figure 1 the correspondence between the reference numerals and the component names in the figure is as follows:

[0070] 100 First pump body, 101 Generator controller, 102 Distributor, 103 Rear motor, 104 First heat exchanger, 105 Second heat exchanger, 106 First three-way pipe, 107 Motor radiator, 108 Second control valve, 109 First control valve, 110 Fourth pump body, 111 Heater, 112 Sixth control valve, 113 Power battery, 114 Fifth three-way pipe, 115 Third heat exchanger, 116 Fifth pump body, 117 Warm air core, 118 Fifth control valve, 119 Fifth control valve, 120 Seventh three-way pipe, 121 Engine, 122 Seventh control valve, 123 Third pump body, 124 Fourth three-way pipe, 125 Oil cooler, 126 Fourth control valve, 127 Hybrid system, 128 Second pump body, 129 Second three-way pipe, 130 Intercooler radiator, 131 Third control valve, 132 Second three-way pipe, 133 Water-cooled intercooler, 134 Turbine, 135 Third three-way pipe; 200 First temperature sensor, 201 Fifth temperature sensor, 202 Second temperature sensor, 203 Third temperature sensor, 204 Fourth temperature sensor. Detailed implementation manners

[0071] To better understand the above technical solution, the technical solution of the embodiments of the present application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solution of the embodiments of the present application, rather than limitations on the technical solution of the present application. Without conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0072] As Figure 1 shown, according to the first aspect of the embodiments of the present application, a vehicle thermal management system is provided, including: an electric drive circuit for dissipating heat from the motor of the vehicle; an intercooling circuit for dissipating heat from the turbine 134 of the vehicle; a first heat exchanger 104 disposed on the intercooling circuit and the electric drive circuit; an oil cooling circuit for dissipating heat from the hybrid system 127 of the vehicle; a second heat exchanger 105 disposed on the oil cooling circuit and the electric drive circuit; and a battery circuit for dissipating heat or heating the battery, and the battery circuit is connected to the electric drive circuit through a first control valve 109.

[0073] The vehicle thermal management system provided by the embodiments of the present application includes an electric drive circuit, an intercooling circuit, an oil cooling circuit, and a battery circuit. A first heat exchanger 104 is disposed on the intercooling circuit and the electric drive circuit, and a second heat exchanger 105 is disposed on the oil cooling circuit and the electric drive circuit. The electric drive circuit can also be conducted to the battery circuit, enabling energy to be transferred and utilized among the intercooling circuit, the oil cooling circuit, the electric drive circuit, and the battery circuit, improving energy utilization efficiency and reducing the energy consumption of the entire vehicle. For example, when the vehicle is starting up and the power battery 113 needs to be heated, heat exchange can be carried out between the intercooling circuit and the oil cooling circuit and the electric drive circuit, and then the heat energy can be transported to the battery circuit to improve the heating efficiency of the battery. When the heat dissipation capabilities of the intercooling circuit and the oil cooling circuit are insufficient, heat exchange can be carried out between the first heat exchanger 104 and the second heat exchanger 105 and the electric drive circuit, enabling the electric drive circuit to assist the intercooling circuit and the oil cooling circuit in heat dissipation, improving the heat dissipation efficiency and the heat energy utilization efficiency.

[0074] It can be understood that when the ambient temperature of the vehicle is relatively high, the vehicle is in a low-speed driving state and the engine is under heavy load conditions, the heat dissipation requirement of the intercooling circuit is large. Relying solely on the intercooling circuit may not be able to meet the cooling requirement. Since the electric drive circuit at the front end of the vehicle has a better heat dissipation effect, the intercooling circuit can be controlled to be conducted to the first heat exchanger 104, enabling part of the coolant to flow through the first heat exchanger 104 for heat exchange with the electric drive circuit. Since a parallel circuit is added to the intercooling circuit at this time, the circuit flow resistance is reduced and the coolant flow rate is increased, further improving the cooling effect of the intercooling circuit.

[0075] It is understandable that when the vehicle's ambient temperature is high, the vehicle is traveling at high speed, and the generator and front motor are under heavy load, the oil cooling circuit alone cannot meet the cooling demand, while the electric drive circuit at the front end of the vehicle has a better heat dissipation effect. The oil cooling circuit and the electric drive circuit can be controlled to be connected so that part of the coolant flows through the second heat exchanger 105 to exchange heat with the electric drive circuit. Since a parallel circuit is added to the oil cooling circuit at this time, the circuit flow resistance is reduced, and the cooling oil flow rate is increased, which further improves the cooling effect of the oil cooling circuit.

[0076] It is understandable that, considering that the performance of the power battery 113 will be greatly attenuated at low temperatures and irreversible damage will be caused to the power battery 113, when the vehicle is used under low temperature conditions, the power battery 113 needs to be heated. Traditional technologies usually have three methods: PTC heater 111 heating, engine waste heat heating, and rear motor waste heat heating. However, when the vehicle is just started, the engine water temperature is low and needs to be warmed up, or when the vehicle is driving purely on electricity, the engine is not started, and the power battery 113 cannot be heated. The use of the PTC heater 111 has high energy consumption, which will significantly shorten the vehicle's range.

[0077] It can be understood that when the heating demand of the power battery 113 is high and the waste heat of the engine cannot be utilized, the intercooling circuit and the first heat exchanger 104 can be controlled to be connected, and the oil cooling circuit and the second heat exchanger 105 can be controlled to be connected. At this time, the waste heat of the intercooling circuit passes through the first heat exchanger 104, and the waste heat of the oil cooling circuit passes through the second heat exchanger to the electric drive circuit, together with the waste heat of the motor in the electric drive circuit, flows into the battery circuit with the coolant, helping to heat up the power battery 113.

[0078] In a feasible implementation manner, the electric drive circuit is provided with: a first pump body 100 and a motor radiator 107, and the electric drive circuit flows through the motor assembly of the vehicle; wherein, the electric drive circuit includes: a first series pipeline, the first series pipeline flows through the motor assembly, the first heat exchanger 104, the second heat exchanger 105, the third heat exchanger 115 and the motor radiator 107 are arranged on the first series pipeline; a first parallel pipeline, connected to the first series pipeline, and parallel to the motor heat exchanger; a second control valve 108, arranged at the connection point between the first series pipeline and the first parallel pipeline.

[0079] In this technical solution, the structural composition of the electric drive circuit and the components through which the electric drive circuit flows are further provided.

[0080] In this technical solution, the electric drive loop is provided with: a first pump body 100 and a motor radiator 107. The electric drive loop flows through the motor assembly of the vehicle. The first pump body 100 is used to drive the medium to flow in the electric drive loop, and the motor radiator 107 is used for heat dissipation to take away the heat energy in the electric drive loop. When the vehicle thermal management system is applied to the vehicle, the motor radiator 107 can be arranged in the center of the front end of the vehicle to rely on the oncoming wind during vehicle driving for heat dissipation, which can improve the heat dissipation efficiency.

[0081] In this technical solution, the electric drive loop flows through the motor assembly of the vehicle. When the medium flows through the motor assembly, the medium can take away the heat energy on the motor assembly, and thus heat dissipation can be performed for the motor assembly.

[0082] In this technical solution, the electric drive loop includes a first series pipeline and a first parallel pipeline. The first parallel pipeline is in parallel with the motor heat exchanger and then used with the second control valve 108 assembly, so as to control the flow mode of the medium in the electric drive loop, enabling the electric drive loop to have different operating modes to adapt to different working conditions. For example, when the power battery 113 needs energy to be heated up, the first parallel pipeline can be controlled to be in a conducting state through the second control valve 108. In this case, the medium will not exchange heat through the motor heat exchanger, and more heat energy can be transported into the battery loop; while when the vehicle needs to quickly dissipate heat for the motor assembly of the vehicle, the medium needs to be controlled to flow through the motor radiator 107 through the second control valve 108 to quickly dissipate heat for the battery assembly.

[0083] As Figure 1 shown, the electric drive loop is provided with a first pump body 100, a first heat exchanger 104, a second heat exchanger 105, a first three-way pipe 106, and a motor radiator 107. The motor assembly can include: a motor and a generator controller 101, a charger and a distributor 102, and a rear motor 103; the second control valve 108 can be a three-way valve, and the 1 and 2 interfaces of the second control valve 108, and the first control valve 109 can be a four-way valve. The 1 and 3 interfaces of the four-way valve are connected in sequence, and the first three-way pipe 106 is connected to the 3 interface of the second control valve 108 to form the electric drive loop.

[0084] In a feasible implementation manner, the intercooling loop is provided with: a second pump body 128, an intercooling radiator 130, and an intercooling water cooler. The intercooling water cooler is used to dissipate heat for the intake or exhaust of the turbine 134; wherein, the intercooling loop includes: a second series pipeline, the second series pipeline flows through the turbine 134, the second pump body 128, the intercooling radiator 130, and the intercooling water cooler, and the intercooling water cooler is in parallel with the turbine 134; a second parallel pipeline, which is connected to the second series pipeline, the second parallel pipeline is in parallel with the intercooling radiator 130, and the second parallel pipeline is connected to the first heat exchanger 104; a third control valve 131, which is arranged at the connection point of the second series pipeline and the second parallel pipeline.

[0085] In this technical solution, the structural composition of the intercooling circuit and the layout through which the intercooling circuit flows are further provided.

[0086] In this technical solution, a second pump body 128, an intercooling radiator 130, and an intercooling water cooler are provided on the intercooling circuit. The second pump body 128 can be used to drive the flow of the medium in the intercooling circuit, and the intercooling water cooler can be used to exchange heat for the turbine 134.

[0087] In this technical solution, the intercooling circuit includes a second series pipeline, a second parallel pipeline, and a third control valve 131. Such a setting can control the conduction between the intercooling circuit and the first heat exchanger 104, so that the vehicle thermal management system can have more operating modes.

[0088] In this technical solution, considering that the cooling circuits of the turbines 134 of most engines are incorporated into the high-temperature cooling circuit of the engine, and the waste heat of the turbines 134 cannot be used for battery heating or occupant compartment heating during cold start of the engine, the cooling circuit of the turbine 134 in this patent solution is connected in parallel to the intercooling circuit, and the waste heat of the turbine 134 can also be used for battery heating or occupant compartment heating during cold start of the engine.

[0089] As Figure 1 shown, a second pump body 128, a second three-way pipe 129, an intercooling radiator 130, and a third control valve 131 (which can be a three-way valve) are provided on the intercooling circuit. The 3 and 2 interfaces of the third control valve 131, the second three-way pipe 132, the water-cooled intercooler 133, and the third three-way pipe 135 are connected in sequence, and the second three-way pipe 129, the first heat exchanger 104, and the 1 interface of the third control valve 131 are connected in sequence. The second three-way pipe 132, the turbine 134, and the third three-way pipe 135 are connected in sequence to form the intercooling circuit.

[0090] In a feasible implementation manner, a third pump body 123 and an oil cooler 125 are provided on the oil cooling circuit; wherein, the oil cooling circuit includes: a third series pipeline, and the third series pipeline flows through the third pump body 123, the oil cooler 125, and the hybrid system 127; a third parallel pipeline, which is connected to the third series pipeline, the third parallel pipeline is connected in parallel with the oil cooler 125, and the third parallel pipeline is connected to the second heat exchanger 105; a fourth control valve 126, which is provided at the connection between the third series pipeline and the third parallel pipeline.

[0091] In this technical solution, the structural composition of the oil cooling circuit and the components through which the oil cooling circuit flows are further provided.

[0092] In this technical solution, an oil cooling circuit is provided with a third pump body 123 and an oil cooler 125. The setting of the third pump body 123 can drive the medium to flow, and the setting of the oil cooler 125 can cool the hybrid system 127.

[0093] In this technical solution, the oil cooling circuit includes a third series pipeline, a third parallel pipeline, and a fourth control valve 126. Based on this, the oil cooling circuit has different conduction modes, enabling the vehicle thermal management system to have more operating modes.

[0094] As Figure 1 shown, the oil cooling circuit is provided with a third pump body 123, a fourth three-way pipe 124, an oil cooler 125, and the fourth control valve 126 can be a three-way valve. The 3-port and 2-port of the fourth control valve 126, the generator, and the front motor are connected in sequence, and the fourth three-way pipe 124, the second heat exchanger 105, and the 1-port of the fourth control valve 126 are connected in sequence to form the oil cooling circuit.

[0095] In a feasible implementation manner, a fourth pump body 110 and a heater 111 are provided on the battery circuit; wherein, the battery circuit includes: a fourth series pipeline that flows through the fourth pump body 110, the heater 111, and the vehicle's power battery 113; a fourth parallel pipeline that is connected to the fourth series pipeline and is in parallel with the power battery 113; and a first control valve 109 is provided on the fourth series pipeline.

[0096] In this technical solution, the structural composition of the battery circuit and the pipeline composition of the battery circuit are further provided.

[0097] In this technical solution, a fourth pump body 110 and a heater 111 are provided on the battery circuit. The battery can be heated through the heater 111.

[0098] In this technical solution, the battery circuit includes a fourth series pipeline and a fourth parallel pipeline. Based on this, the vehicle thermal management system can have more operating modes.

[0099] As Figure 1 shown, the battery circuit is provided with a fourth pump body 110, a heater 111, and a sixth control valve 112. The sixth control valve 112 can be a three-way valve. The 2-port, 1-port of the sixth control valve 112, the power battery 113, a fifth three-way pipe 114, the 4-port and 2-port of the first control valve, and a third heat exchanger 115 are connected in sequence, and the 3-port of the three-way valve is connected to the fifth three-way pipe 114 to form the battery circuit.

[0100] In a feasible implementation, the vehicle thermal management system further includes: a warm air circuit for cooling or heating the vehicle's cockpit; a third heat exchanger 115 disposed on the battery circuit and the warm air circuit; a fifth pump body 116 and a warm air core 117 are disposed on the warm air circuit; the warm air circuit includes: a fifth series pipeline that flows through the fifth pump body 116, the warm air core 117, and the vehicle's engine; a fifth parallel pipeline that is connected to the fifth series pipeline and is in parallel with the engine; a fifth control valve 119118 is disposed at the connection of the fifth series pipeline and the fifth parallel pipeline.

[0101] In this technical solution, the vehicle thermal management system may further include a warm air pipeline, and the warm air pipeline can exchange heat with the battery circuit through the third heat exchanger 115, based on which the heat exchange efficiency of the warm air circuit can be improved.

[0102] The warm air circuit includes a fifth series pipeline, a fifth parallel pipeline, and a fifth control valve 119118. Based on this, the warm air circuit can have different connection modes, so that the vehicle thermal management system can have different operation modes.

[0103] As Figure 1 shown, a fifth pump body 116, a warm air core 117, and a fifth control valve 118 which is a three-way valve are disposed on the vehicle thermal management system. The 1 and 2 interfaces of the fifth control valve 118, a sixth three-way pipe 119, a seventh three-way pipe 120, an engine 121, and the 1 and 2 interfaces of a seventh control valve 122 are sequentially connected, and the 3 interface of the seventh control valve 122 is connected to the seventh three-way pipe 120. The 3 interface of the fifth control valve 118 is connected to the sixth three-way pipe 119 to form the warm air circuit.

[0104] It can be understood that in a low-temperature environment, when there is a heating demand in the passenger compartment and the waste heat of the engine cannot be utilized, it is usually heated by either the waste heat utilization of the engine or the wind-side PTC heater. When the vehicle is just started, the engine water temperature is low and it needs to warm up, or when the vehicle is running purely on electricity and the engine is not started, the waste heat of the engine cannot be utilized for heating. Using the wind-side PTC heater for heating has high energy consumption and will significantly shorten the vehicle's cruising range.

[0105] It can be understood that when the heating demand of the passenger compartment is high, the interfaces 2 and 3 of the second control valve 108 are connected, the interfaces 1 and 2 of the fourth control valve 126 are connected, the interfaces 1 and 2 of the third control valve 131 are connected, the interfaces 3 and 2 of the sixth control valve 112 are connected, the interfaces 3 and 2 of the seventh control valve 122 are connected, the interfaces 1 and 2 of the fifth control valve 118 are connected, and the interfaces 1 and 2 and 4 and 3 of the first control valve 109 are connected. At this time, the waste heat of the intercooling circuit is transferred to the electric drive circuit through the first heat exchanger 104, and the waste heat of the oil cooling circuit is transferred to the electric drive circuit through the second heat exchanger 105. Together with the waste heat of the rear motor 103, it flows into the battery circuit with the coolant, flows through the third heat exchanger 115, and transfers the waste heat to the warm air circuit, and helps to heat the passenger compartment through the warm air core 117.

[0106] It can be understood that when both the power battery and the passenger compartment have heating requirements and the waste heat of the engine cannot be utilized, the interfaces 1 and 2 of the second control valve 108 are connected, the interfaces 1 and 2 of the fourth control valve 126 are connected, the interfaces 1 and 2 of the third control valve 131 are connected, the interfaces 3 and 2 of the seventh control valve 122 are connected, the interfaces 1 and 2 of the fifth control valve 118 are connected, and the interfaces 1 and 2 and 4 and 3 of the first control valve 109 are connected. The sixth control valve 112 is adjusted according to a preset ratio. At this time, the waste heat of the intercooling circuit is transferred to the electric drive circuit through the first heat exchanger 104, and the waste heat of the oil cooling circuit is transferred to the electric drive circuit through the second heat exchanger 105. Together with the waste heat of the rear motor 103, it flows into the battery circuit with the coolant, flows through the third heat exchanger 115, and part of it flows through the power battery 113, so as to assist in meeting the heating requirements of both the power battery and the passenger compartment at the same time.

[0107] In a feasible implementation manner, the vehicle thermal management system further includes: a first temperature sensor 200, arranged on the electric drive circuit; a second temperature sensor 202, arranged on the intercooling circuit; a third temperature sensor 203, arranged on the oil cooling circuit; a fourth temperature sensor 204, arranged on the warm air circuit; a fifth temperature sensor 210, arranged on the battery circuit.

[0108] In this technical solution, the vehicle management system may further include a first temperature sensor 200, a second temperature sensor 202, a third temperature sensor 203, and a fourth temperature sensor 204. Based on this, the temperature of each pipeline can be obtained, the heat dissipation state can be determined, and a judgment basis can be provided for the control of the control valve.

[0109] In one example, considering that the temperature of the power battery 113 has a great influence on vehicle driving and endurance, there may be multiple fifth temperature sensors 210 arranged on the battery circuit.

[0110] As Figure 2 shown, according to the second aspect of the embodiments of the present application, a vehicle thermal management method is proposed, which is applied to the vehicle thermal management system of the above technical solution. The vehicle thermal management method includes:

[0111] Step 501: Obtain at least one of the environmental temperature information, vehicle speed information, and engine load information of the vehicle; it can be understood that the environmental temperature information, vehicle speed information, and engine load information can be obtained through in-vehicle sensors.

[0112] Step 502: Based on the obtained information, control the connection relationship between the intercooling circuit and the first heat exchanger; it can be understood that when the refrigeration demand of the intercooling circuit is high, the intercooling circuit can be connected to the first heat exchanger, and when the refrigeration requirement of the intercooling circuit is low, the intercooling circuit can be disconnected from the first heat exchanger.

[0113] Step 503: Based on the obtained information, control the connection relationship between the oil cooling circuit and the second heat exchanger; it can be understood that when the refrigeration demand of the oil cooling circuit is high, the oil cooling circuit can be connected to the second heat exchanger, and when the refrigeration requirement of the oil cooling circuit is low, the oil cooling circuit can be disconnected from the second heat exchanger.

[0114] Step 504: Based on the obtained information, control the connection relationship between the battery circuit and the electric drive circuit. It can be understood that when the heat energy demand of the battery circuit is high, the connection between the battery circuit and the electric drive circuit can be controlled. If the heat energy demand of the battery circuit is low, the connection between the battery circuit and the electric drive circuit can be controlled to be disconnected.

[0115] Through the vehicle thermal management method provided by the embodiments of the present application, by collecting the environmental temperature information, vehicle speed information, and engine load information of the vehicle, the temperature regulation pressure of the vehicle can be judged based on this information, and further based on the environmental temperature information, vehicle speed information, and engine load information of the vehicle, the conduction mode of the vehicle thermal management system can be determined, so that the operation mode of the vehicle thermal management system can be adapted to the working conditions of the vehicle, which can improve the heat energy utilization efficiency and the heating efficiency of the battery and the cockpit.

[0116] As Figure 1 shown, in the vehicle thermal management system, during use, the oil cooler 125 and the intercooling radiator 130 are arranged on the left and right sides of the front grille of the vehicle, relying on the oncoming wind for heat dissipation when the vehicle is driving. The motor radiator 107 is arranged in the center of the front end of the vehicle, relying on the oncoming wind when the vehicle is driving or the front-end module cooling fan to suck the front-end air flow for heat dissipation. When the heat dissipation demand is not large, the 1 and 2 interfaces of the second control valve 108 of the electric drive circuit are connected, the 2 and 3 interfaces of the fourth control valve 126 of the oil cooling circuit are connected, and the 2 and 3 interfaces of the third control valve 131 of the intercooling circuit are connected. The above three circuits can cool the system relying on the radiators in their respective circuits.

[0117] When the temperature is high and the vehicle is in a low-speed driving and high-load engine operating condition, the heat dissipation demand of the intercooling circuit is large. Only relying on the intercooling radiator 130 cannot meet the cooling demand. However, the suction of the front module cooling fan makes the heat dissipation effect of the motor radiator 107 better. Therefore, the third control valve 131 is adjusted according to a preset ratio, so that part of the coolant flows through the first heat exchanger 104 to exchange heat with the electric drive circuit. Since an additional parallel circuit is added to the intercooling circuit at this time, the circuit flow resistance decreases and the coolant flow increases, further improving the cooling effect of the intercooling circuit.

[0118] When the temperature is high and the vehicle is in a high-speed driving and high-load operating condition of the generator and the front motor, only relying on the air-cooled and oil-cooled radiator 125 cannot meet the cooling demand. However, the suction of the front module cooling fan plus the better flow field in the central area of the grille makes the heat dissipation effect of the motor radiator 107 better. Therefore, the fourth control valve 126 is adjusted according to a preset ratio 2, so that part of the coolant flows through the second heat exchanger 105 to exchange heat with the electric drive circuit. Since an additional parallel circuit is added to the oil-cooling circuit at this time, the circuit flow resistance decreases and the cooling oil flow increases, further improving the cooling effect of the oil-cooling circuit.

[0119] Since the performance of the power battery will decay significantly at low temperatures and irreversible damage will be caused to the power battery, when using the vehicle under low temperature conditions, the power battery has a heating demand. There are usually three heating methods: PTC heater 111 heating, waste heat heating of the engine 121, and waste heat heating of the rear motor 103. When the vehicle is just started, the water temperature of the engine 121 is low and it needs to warm up, or when the vehicle is driving purely electrically and the engine 121 is not started, the power battery 113 cannot be heated. Using the PTC heater consumes a large amount of energy and will significantly shorten the vehicle's cruising range.

[0120] When the heating demand of the power battery is high and the waste heat of the engine cannot be utilized, the 1 and 2 interfaces of the second control valve 108 are connected, the 1 and 2 interfaces of the fourth control valve 126 are connected, the 1 and 2 interfaces of the third control valve 131 are connected, the 1 and 2 interfaces of the sixth control valve 112 are connected, the 1 and 3 interfaces of the fifth control valve 118 are connected, and the 1 and 2 and 4 and 3 interfaces of the first control valve 109 are connected. At this time, the waste heat of the intercooling circuit passes through the first heat exchanger 104, and the waste heat of the oil-cooling circuit passes through the second heat exchanger 105 to be transferred to the electric drive circuit, and together with the waste heat of the rear motor 103, it flows into the battery circuit with the coolant to help the power battery 113 warm up.

[0121] In a low-temperature environment, when there is a heating demand for the passenger compartment and the waste heat of the engine cannot be utilized, it is usually by using the waste heat of the engine 121 and heating with the air-side PTC heater. When the vehicle is just started, the water temperature of the engine 121 is low and it needs to warm up, or when the vehicle is driving purely electrically and the engine 121 is not started, the waste heat of the engine cannot be used for heating. Using the air-side PTC heater consumes a large amount of energy and will significantly shorten the vehicle's cruising range.

[0122] When the heating demand of the passenger compartment is high, the 2 and 3 interfaces of the second control valve 108 are connected, the 1 and 2 interfaces of the fourth control valve 126 are connected, the 1 and 2 interfaces of the third control valve 131 are connected, the 3 and 2 interfaces of the sixth control valve 112 are connected, the 3 and 2 interfaces of the seventh control valve 122 are connected, the 1 and 2 interfaces of the fifth control valve 118 are connected, and the 1 and 2 and 4 and 3 interfaces of the first control valve 109 are connected. At this time, the waste heat of the intercooling circuit is transferred to the electric drive circuit through the heat exchanger 104, and the waste heat of the oil cooling circuit is transferred to the electric drive circuit through the heat exchanger 105. Together with the waste heat of the rear motor 103, it flows into the battery circuit with the coolant, passes through the third heat exchanger 115, and transfers the waste heat to the warm air circuit, and helps the passenger compartment heating through the warm air core 117.

[0123] When both the power battery and the passenger compartment have heating requirements and the waste heat of the engine cannot be utilized, the 1 and 2 interfaces of the second control valve 108 are connected, the 1 and 2 interfaces of the fourth control valve 126 are connected, the 1 and 2 interfaces of the third control valve 131 are connected, the 3 and 2 interfaces of the seventh control valve 122 are connected, the 1 and 2 interfaces of the fifth control valve 118 are connected, the 1 and 2 and 4 and 3 interfaces of the first control valve 109 are connected, and the sixth control valve 112 is adjusted according to the preset ratio 3. At this time, the waste heat of the intercooling circuit is transferred to the electric drive circuit through the heat exchanger 104, and the waste heat of the oil cooling circuit is transferred to the electric drive circuit through the heat exchanger 105. Together with the waste heat of the rear motor 103, it flows into the battery circuit with the coolant, passes through the third heat exchanger 115, and part of it flows through the power battery 113, so as to assist in completing the heating requirements of both the power battery and the passenger compartment at the same time.

[0124] The cooling circuits of the turbine bodies of most engines are incorporated into the high-temperature cooling circuit of the engine, and the waste heat of the turbine bodies cannot be used for battery heating or passenger compartment heating during cold start of the engine. In the solution of this patent, the cooling circuit of the turbine 134 is connected in parallel to the intercooling circuit, and the waste heat of the turbine 134 can also be used for battery heating or passenger compartment heating during cold start of the engine.

[0125] As Figure 3 shown, a computer-readable storage medium 301 is proposed according to the third aspect of the embodiments of the present application. The computer-readable storage medium 301 stores a computer program 302 to implement the vehicle thermal management method as described in the above technical solution.

[0126] The computer-readable storage medium 301 provided by the embodiments of the present application realizes the vehicle thermal management method as described in the above technical solution, so it has all the beneficial effects of the vehicle thermal management method of the above technical solution, which will not be elaborated here.

[0127] As Figure 4As shown in the figure, according to the fourth aspect of the embodiments of the present application, a control device is provided, including: a memory 401 storing a computer program; a processor 402 executing the computer program; wherein, when the processor 402 executes the computer program, it implements the vehicle thermal management method of the above technical solution.

[0128] The control device provided by the embodiments of the present application implements the vehicle thermal management method of the above technical solution, so it has all the beneficial effects of the vehicle thermal management method of the above technical solution, which will not be elaborated here.

[0129] It should be noted that in the above embodiments, the descriptions of each embodiment have their own focuses. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0130] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes.

[0131] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, and the combination of processes and / or blocks in the flowchart and / or block diagram, can be realized by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded computers, or other programmable data processing devices to generate a machine, so that the instructions executed by the processors of the computer or other programmable data processing devices generate means for realizing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0132] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means realizes the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0133] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, causing a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, so that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one process or multiple processes and / or blocks. Figure 1 One process or multiple processes and / or blocks Figure 1 Steps for implementing the functions specified in one block or multiple blocks.

[0134] An embodiment of the present application also provides a computer program product, which includes computer software instructions. When the computer software instructions run on a processing device, the processing device is caused to execute the processes in the application program protection method in the corresponding embodiment. Figure 1 The processes in the corresponding embodiment of the application program protection method.

[0135] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, a computer, a server, or a data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server, a data center, etc. that includes one or more integrated available media. The available medium may be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0136] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, apparatuses, and units described above may refer to the corresponding processes in the foregoing method embodiments and will not be described herein again.

[0137] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling, or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be in electrical, mechanical, or other forms.

[0138] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0139] In addition, each functional unit in various embodiments of the present application can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0140] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks, and other media that can store program codes.

[0141] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of various embodiments of the present application.

Claims

1. A vehicle thermal management system, characterized in that, it includes: An electric drive circuit for dissipating heat from the motor of the vehicle; An intercooler circuit for dissipating heat from the turbine of the vehicle; A first heat exchanger disposed on the intercooler circuit and the electric drive circuit; An oil cooling circuit for dissipating heat from the hybrid system of the vehicle; A second heat exchanger disposed on the oil cooling circuit and the electric drive circuit; A battery circuit for dissipating heat or heating the battery, and the battery circuit is connected to the electric drive circuit through a first control valve.

2. The vehicle thermal management system according to claim 1, characterized in that, The following are provided on the electric drive circuit: A first pump body and a motor radiator, and the electric drive circuit flows through the motor assembly of the vehicle; Among them, the electric drive circuit includes: A first series pipeline, the first series pipeline flows through the motor assembly, and the first heat exchanger, the second heat exchanger and the motor radiator are arranged on the first series pipeline; A first parallel pipeline, connected to the first series pipeline and in parallel with the motor heat exchanger; A second control valve is arranged at the connection of the first series pipeline and the first parallel pipeline.

3. The vehicle thermal management system according to claim 1, characterized in that, The following are provided on the intercooler circuit: A second pump body, an intercooler radiator and an intercooler water cooler, and the intercooler water cooler is used for dissipating heat from the intake or exhaust of the turbine; Among them, the intercooler circuit includes: A second series pipeline, the second series pipeline flows through the turbine, the second pump body, the intercooler radiator and the intercooler water cooler, and the intercooler water cooler is in parallel with the turbine; A second parallel pipeline, connected to the second series pipeline, the second parallel pipeline is in parallel with the intercooler radiator, and the second parallel pipeline is connected to the first heat exchanger; A third control valve is arranged at the connection of the second series pipeline and the second parallel pipeline.

4. The vehicle thermal management system according to claim 1, characterized in that, The following are provided on the oil cooling circuit: A third pump body and an oil cooler; Among them, the oil cooling circuit includes: A third series pipeline, the third series pipeline flows through the third pump body, the oil cooler and the hybrid system; A third parallel pipeline, connected to the third series pipeline, the third parallel pipeline is in parallel with the oil cooler, and the third parallel pipeline is connected to the second heat exchanger; A fourth control valve is arranged at the connection of the third series pipeline and the third parallel pipeline.

5. The vehicle thermal management system according to claim 1, characterized in that, The following are provided on the battery circuit: A fourth pump body and a heater; Among them, the battery circuit includes: A fourth series pipeline, the fourth series pipeline flows through the fourth pump body, the heater and the power battery of the vehicle A fourth parallel pipeline, connected to the fourth series pipeline, the fourth parallel pipeline is in parallel with the power battery; The first control valve is arranged on the fourth series pipeline.

6. The vehicle thermal management system according to claim 1, characterized in that, It further includes: A warm air circuit for cooling or heating the cockpit of the vehicle; The third heat exchanger is arranged on the battery circuit and the warm air return circuit; A fifth pump body and a warm air core body are arranged on the warm air return circuit; The warm air return circuit includes: A fifth series pipeline that flows through the fifth pump body, the warm air core body, and the vehicle's engine; A fifth parallel pipeline that is connected to the fifth series pipeline and is in parallel with the engine; A fifth control valve is arranged at the connection between the fifth series pipeline and the fifth parallel pipeline.

7. The vehicle thermal management system according to claim 6, characterized in that it further includes: A first temperature sensor is arranged on the electric drive circuit; A second temperature sensor is arranged on the intercooling circuit; A third temperature sensor is arranged on the oil cooling circuit; A fourth temperature sensor is arranged on the warm air return circuit.

8. A vehicle thermal management method, characterized in that it is applied to the vehicle thermal management system according to any one of claims 1 to 6, and the vehicle thermal management method includes: Obtaining at least one of the ambient temperature information, vehicle speed information, and engine load information of the vehicle; Based on the obtained information, controlling the connection relationship between the intercooling circuit and the first heat exchanger; and / or Based on the obtained information, controlling the connection relationship between the oil cooling circuit and the second heat exchanger; and / or; Based on the obtained information, controlling the connection relationship between the battery circuit and the electric drive circuit.

9. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for implementing the vehicle thermal management method according to claim 8.

10. A control device, characterized in that it includes: A memory that stores a computer program; A processor that executes the computer program; wherein, when the processor executes the computer program, it implements the vehicle thermal management method according to claim 8.

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