Vehicle thermal management system and vehicle

Abstract

A vehicle thermal management system, comprising a liquid storage device, a heat exchange device, and spraying devices. The liquid storage device is used for storing a liquid medium; the heat exchange device is connected to the liquid storage device and used for heating the liquid medium in the liquid storage device; and the spraying devices are communicated with the liquid storage device and used for spraying the liquid medium from the liquid storage device to wheels of a vehicle. The liquid medium stored in the liquid storage device is heated by means of the heat exchange device, so that when the wheels of the vehicle slip on the snow, the spraying devices are controlled to activate to spray the liquid medium from the liquid storage device to the wheels of the vehicle. In this way, ice and snow can be melted to improve the grip of the wheels, thereby facilitating the vehicle to get unstuck in the snow.

Description

Vehicle thermal management system and vehicle

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202411038235.X, filed on July 31, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of vehicles, and in particular to a vehicle thermal management system and a vehicle. BACKGROUND

[0004] The vehicle thermal management system is a system for controlling and optimizing heat transfer, which automatically adjusts the cooling intensity through the driving conditions of the vehicle and the external environmental conditions, to ensure that the key components such as the engine, oil, lubricating oil, supercharged air, fuel, and electronic devices are working within an optimal temperature range.

[0005] At present, in cold and snowy areas, vehicles often face problems such as wheel slip and vehicle being trapped during driving, which affects driving safety. In related technologies, the solution to the problem of vehicle wheel slip and being trapped usually relies on the traction system of the vehicle. If the vehicle wheels slip, the traction system will reduce the driving force to prevent the driving wheels from idling when the vehicle is driving on the snow-covered road surface, which helps the vehicle to start smoothly and escape. However, the traction system can only solve the escape scene of the snow-covered road where part of the wheels still have the ability to grip the ground, and the adjustment of the traction system is difficult to make the vehicle escape from the snow when the wheels continue to slip. Therefore, how to effectively make the vehicle escape from the snow is a problem to be solved at present. TECHNICAL PROBLEM

[0006] The embodiments of the present disclosure provide a vehicle thermal management system to enable the vehicle to escape from the snow, to at least partially solve the above technical problem. TECHNICAL SOLUTION

[0007] Some embodiments of the present disclosure provide a vehicle thermal management system to enable the vehicle to escape from the snow, to at least partially solve the above technical problem.

[0008] In a first aspect, some embodiments of the present disclosure provide a vehicle thermal management system, comprising:

[0009] a liquid storage device for storing a liquid medium;

[0010] a heat exchange device connected to the liquid storage device, for heating the liquid medium in the liquid storage device;

[0011] A spraying device, in communication with the liquid storage device, for spraying the liquid medium in the liquid storage device to a wheel of the vehicle.

[0012] In some embodiments, the heat exchange device comprises an engine heat exchange assembly connected with an engine heat exchange system of the vehicle;

[0013] The engine heat exchange assembly extends at least partially into the liquid storage device to transfer heat from the engine heat exchange system to the liquid medium in the liquid storage device when the engine heat exchange assembly is in communication with the engine heat exchange system.

[0014] In some embodiments, the engine heat exchange assembly comprises a first connecting pipe, a second connecting pipe and a first heat exchange pipe;

[0015] One end of the first connecting pipe is connected with one end of the first heat exchange pipe, and the other end of the first connecting pipe is connected with the engine heat exchange system;

[0016] One end of the second connecting pipe is connected with the other end of the first heat exchange pipe, and the other end of the second connecting pipe is connected with the engine heat exchange system.

[0017] Part of the first heat exchange pipe extends into the liquid storage device.

[0018] In some embodiments, the engine heat exchange assembly further comprises a first cut-off member arranged between the liquid storage device and the engine heat exchange system.

[0019] In some embodiments, the first cut-off member comprises a third connecting pipe and a first three-way valve;

[0020] The first valve port of the first three-way valve is connected with one end of the first connecting pipe, the second valve port is connected with one end of the first heat exchange pipe, and the third valve port is connected with one end of the third connecting pipe;

[0021] The other end of the third connecting pipe is connected with the other end of the first heat exchange pipe and the second connecting pipe.

[0022] In some embodiments, a controller and a first temperature sensor for collecting a first temperature of the liquid medium are further included, a second temperature sensor for collecting a second temperature of a cooling liquid of the engine heat exchange system is arranged in the engine heat exchange system, the controller is connected with the first temperature sensor and the second temperature sensor, and is configured to output an engine heat exchange signal to the engine heat exchange assembly to control the engine heat exchange system to exchange heat with the liquid medium when the second temperature is greater than the first temperature.

[0023] In some embodiments, the heat exchange device further comprises:

[0024] A motor waste heat exchange assembly connected with the motor heat exchange system of the vehicle, the motor waste heat exchange assembly extending at least partially into the liquid storage device to transfer heat from the motor heat exchange system to the liquid medium in the liquid storage device when the motor waste heat exchange assembly is in communication with the motor heat exchange system.

[0025] In some embodiments, the motor waste heat exchange assembly comprises a fourth connecting pipeline, a fifth connecting pipeline and a second heat exchange pipeline;

[0026] One end of the fourth connecting pipeline is connected with one end of the second heat exchange pipeline, and the other end of the fourth connecting pipeline is connected with the motor heat exchange system;

[0027] One end of the fifth connecting pipeline is connected with the other end of the second heat exchange pipeline, and the other end of the fifth connecting pipeline is connected with the motor heat exchange system.

[0028] Part of the second heat exchange pipeline extends into the liquid storage device.

[0029] In some embodiments, the motor waste heat exchange assembly further comprises a second cut-off member, which is arranged between the liquid storage device and the motor heat exchange system.

[0030] In some embodiments, the second cut-off member comprises the second three-way valve and a sixth connecting pipeline;

[0031] The first valve port of the second three-way valve is connected with one end of the fourth connecting pipeline, the second valve port is connected with one end of the second heat exchange pipeline, and the third valve port is connected with one end of the sixth connecting pipeline;

[0032] The other end of the sixth connecting pipeline is connected with the second heat exchange pipeline and the fifth connecting pipeline.

[0033] In some embodiments, a controller and a first temperature sensor for collecting a first temperature of the liquid medium are further included, and the motor heat exchange system is provided with a third temperature sensor for collecting a third temperature of the cooling liquid of the motor heat exchange system; the controller is connected with the first temperature sensor and the third temperature sensor, and is configured to output a motor heat exchange signal to the motor waste heat exchange assembly to control the motor heat exchange system to exchange heat with the liquid medium when the third temperature is greater than the first temperature.

[0034] In some embodiments, the heat exchange device further comprises an exhaust heat exchange assembly arranged on an outer wall of an exhaust pipe of the vehicle and located in the liquid storage device; wherein the exhaust pipe passes through the liquid storage device, and the exhaust heat exchange assembly transfers heat of the exhaust pipe to the liquid medium in the liquid storage device.

[0035] In some embodiments, the exhaust heat exchange assembly comprises heat exchange fins arranged on an outer wall of a pipe section of the exhaust pipe located in the liquid storage device.

[0036] In some embodiments, the heat exchange device further comprises a battery heating assembly electrically connected to a power battery of the vehicle, and the battery heating assembly is arranged in the liquid storage device.

[0037] In some embodiments, the battery heating assembly comprises an electric heater and a control switch.

[0038] The electric heater is located in the liquid storage device, a positive electrode of the electric heater is connected to a positive electrode of the power battery of the vehicle, and a negative electrode of the electric heater is connected to a negative electrode of the power battery.

[0039] The control switch is connected in series to the positive electrode or the negative electrode of the electric heater.

[0040] In some embodiments, the spraying device comprises a water pump, a spraying pipeline, and a nozzle.

[0041] The water pump is arranged in the liquid storage device.

[0042] One end of the spraying pipeline is in communication with a liquid outlet of the water pump, and the other end extends to the outside of the liquid storage device and is in communication with the nozzle.

[0043] In some embodiments, a controller and a wheel speed sensor are further included.

[0044] The wheel speed sensor is arranged on a wheel of the vehicle to collect a wheel speed of the wheel and output a wheel speed signal.

[0045] The controller is connected to the wheel speed sensor, and in response to the wheel speed signal, outputs a prompt signal to a human-computer interaction system of the vehicle to prompt to turn on the spraying device to spray the liquid medium in the liquid storage device to the wheel.

[0046] In a second aspect, some embodiments of the present disclosure provide a vehicle comprising the vehicle thermal management system as described above.

[0047] Other features and advantages of the present disclosure will be described in detail in the following detailed description. Advantages

[0048] For the vehicle thermal management system provided by the embodiments of the present disclosure, the heat exchange device is connected with the liquid storage device and heats the liquid medium stored in the liquid storage device to increase the temperature of the liquid medium. When the wheels of the vehicle slip on the snow, the spraying device is started to spray the liquid medium in the liquid storage device to the wheels of the vehicle, and the heated liquid medium is distributed on the contact surface of the wheels and the snow as the wheels slip and rotate, so as to melt the ice and snow. The water film formed by the melting of the ice and snow is more likely to provide friction to the wheels than the solid ice and snow, so as to improve the grip of the wheels, thereby helping the vehicle to escape from the snow. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0050] In order to more completely understand the present disclosure and its beneficial effects, the following will be described with reference to the drawings, wherein the same reference numerals in the following description represent the same parts.

[0051] FIG. 1 is a block diagram of a vehicle thermal management system according to some embodiments of the present disclosure;

[0052] FIG. 2 is a schematic diagram of a heat exchange device according to some embodiments of the present disclosure.

[0053] FIG. 3 is a connection structure diagram of a vehicle thermal management system according to some embodiments of the present disclosure.

[0054] FIG. 4 is a schematic diagram of a vehicle thermal management system for vehicle snow escape according to some embodiments of the present disclosure.

[0055] FIG. 5 is a connection relationship diagram of a controller in a vehicle thermal management system according to some embodiments of the present disclosure.

[0056] Explanation of reference signs: 1, liquid storage device; 1000, vehicle; 2, heat exchange device; 21, engine heat exchange assembly; 211, first connecting pipeline; 212, second connecting pipeline; 213, third connecting pipeline; 214, first heat exchange pipeline; 215, first three-way valve; 22, motor waste heat exchange assembly; 221, fourth connecting pipeline; 222, fifth connecting pipeline; 223, sixth connecting pipeline; 224, second heat exchange pipeline; 225, second three-way valve; 23, tail gas heat exchange assembly; 231, heat exchange fin; 24, battery heating assembly; 241, electric heater; 3, spraying device; 31, water pump; 32, spraying pipeline; 33, nozzle; 4, first temperature sensor; 5, controller; 6, wheel speed sensor. Embodiments of the present application

[0057] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present disclosure.

[0058] According to a first aspect of the present disclosure, with reference to FIGS. 1-5, some embodiments of the present disclosure provide a vehicle thermal management system, comprising a liquid storage device 1, a heat exchange device 2 and a spraying device 3.

[0059] Among them, the liquid storage device 1 is used for storing liquid medium; the heat exchange device 2 is connected with the liquid storage device 1, and is used for heating the liquid medium in the liquid storage device 1; the spraying device 3 is in conductive connection with the liquid storage device 1, and is used for spraying the liquid medium in the liquid storage device 1 to the wheels of the vehicle.

[0060] As an example, the liquid storage device 1 can be a box, and the outside of the box is covered with thermal insulation material, and the connection between the liquid storage device 1 and the heat exchange device 2 and the connection between the liquid storage device 1 and the spraying device 3 are sealed to reduce the heat exchange between the liquid medium in the liquid storage device 1 and the outside. The liquid medium can be water.

[0061] As an example, the spraying device 3 is provided with multiple. In addition, the spraying device 3 can be arranged only near the driving wheels of the vehicle, or one spraying device 3 can be arranged near each wheel.

[0062] In the above embodiments, the heat exchange device 2 is connected to the liquid storage device 1 and heats the liquid medium stored in the liquid storage device 1 to increase the temperature of the liquid medium. When the vehicle wheels slip on the snow, the control injection device 3 is activated to spray the liquid medium in the liquid storage device 1 to the wheels of the vehicle, and as the wheels slip and rotate, the heated liquid medium is distributed on the contact surface of the wheels and the snow, so as to melt the ice and snow, and the water film formed by the melting of the ice and snow is more likely to provide friction to the wheels than the solid ice and snow, thereby improving the grip of the wheels and helping the vehicle to escape from the snow.

[0063] Referring to FIG. 2, in some embodiments, the heat exchange device 2 includes an engine heat exchange assembly 21 connected to an engine heat exchange system of the vehicle.

[0064] The engine heat exchange assembly 21 at least partially extends into the liquid storage device 1 to transfer heat from the engine heat exchange system to the liquid medium in the liquid storage device 1 when the engine heat exchange assembly 21 is in communication with the engine heat exchange system.

[0065] Referring to FIG. 3, as an example, the engine heat exchange assembly 21 includes a first connecting pipeline 211, a second connecting pipeline 212, and a first heat exchange pipeline 214.

[0066] The one end of the first connecting pipeline 211 is connected to one end of the first heat exchange pipeline 214, and the other end of the first connecting pipeline 211 is connected to the engine heat exchange system; one end of the second connecting pipeline 212 is connected to the other end of the first heat exchange pipeline 214, and the other end of the second connecting pipeline 212 is connected to the engine heat exchange system.

[0067] The part of the first heat exchange pipeline 214 extends into the liquid storage device 1, the first heat exchange pipeline 214 can be a U-shaped pipeline, and the part of the first heat exchange pipeline 214 extending into the liquid storage device 1 is curved into a spiral shape to increase the contact area between the first heat exchange pipeline 214 and the liquid medium in the liquid storage device 1, thereby improving the heat exchange efficiency.

[0068] In some embodiments, the engine heat exchange assembly 21 further includes a first cut-off member arranged between the liquid storage device 1 and the engine heat exchange system.

[0069] As an example, the first cut-off member includes a third connecting pipeline 213 and a first three-way valve 215. The first valve port of the first three-way valve 215 is connected to one end of the first connecting pipeline 211, the second valve port of the first three-way valve 215 is connected to one end of the first heat exchange pipeline 214, and the third valve port of the first three-way valve 215 is connected to one end of the third connecting pipeline 213; the other end of the third connecting pipeline 213 is connected to the other end of the first heat exchange pipeline 214 and the second connecting pipeline 212.

[0070] As an example, at the start of the vehicle, a large amount of heat is generated during the operation of the engine, including heat generated by the combustion of fuel in the engine or heat generated by mechanical friction, and the engine heat exchange system is mainly used to dissipate the heat generated by the engine to ensure that the engine operates in the appropriate temperature range. The engine heat exchange system usually includes cooling water channels, radiators, water pumps and other components, so that the cooling liquid circulates in the cooling water channels to absorb and carry away the heat generated by the engine block, cylinder head and other components. Through the engine heat exchange assembly 21, heat exchange is performed between the engine heat exchange system and the liquid storage device 1, and at the same time that the heat generated by the engine is carried away, the heat can also be used to heat the liquid medium in the liquid storage device 1.

[0071] In combination with FIG. 4, as an example, when the engine heat exchange system heats the liquid medium in the liquid storage device 1, the first valve port of the first three-way valve 215 is in communication with the second valve port, so that the cooling liquid in the engine heat exchange system flows into one end of the first heat exchange pipeline 214 after passing through the first connecting pipeline 211, and exchanges heat with the liquid medium in the liquid storage device 1 when the cooling liquid flows through the pipe section extending from the first heat exchange pipeline 214 into the liquid storage device 1, and then the cooling liquid flows out from the other end of the first heat exchange pipeline 214 to the second connecting pipeline 212, and the cooling liquid is transmitted to the engine heat exchange system through the second connecting pipeline 212, thereby realizing heat exchange between the cooling liquid in the engine heat exchange system and the liquid medium in the liquid storage device 1.

[0072] As an example, when the engine heat exchange system does not need to heat the liquid medium in the liquid storage device 1, the first valve port of the first three-way valve 215 is in communication with the third valve port, so that the cooling liquid of the engine heat exchange system sequentially passes through the first connecting pipeline 211, the third connecting pipeline 213 and the second connecting pipeline 212, and then is transmitted to the engine heat exchange system, without passing through the first heat exchange pipeline 214.

[0073] In the above embodiment, by controlling the first three-way valve 215, the communication or disconnection between the engine heat exchange system and the liquid storage device 1 is realized, thereby realizing the heat exchange control between the engine heat exchange system and the liquid storage device 1.

[0074] Referring to FIG. 2, in some embodiments, the heat exchange device 2 further comprises a motor waste heat exchange assembly 22 connected with a motor heat exchange system of the vehicle, and the motor waste heat exchange assembly 22 at least partially extends into the liquid storage device 1, so as to transfer the heat of the motor heat exchange system to the liquid medium in the liquid storage device 1 when the motor waste heat exchange assembly 22 is in communication with the motor heat exchange system.

[0075] Referring to FIG. 3, in some embodiments, the motor waste heat exchange assembly 22 comprises a fourth connecting pipeline 221, a fifth connecting pipeline 222, and a second heat exchange pipeline 224.

[0076] One end of the fourth connecting pipeline 221 is connected with one end of the second heat exchange pipeline 224, and the other end of the fourth connecting pipeline 221 is connected with the motor heat exchange system. One end of the fifth connecting pipeline 222 is connected with the other end of the second heat exchange pipeline 224, and the other end of the fifth connecting pipeline 222 is connected with the motor heat exchange system.

[0077] As an example, the second heat exchange pipeline 224 extends into the liquid storage device 1, the second heat exchange pipeline 224 can be a U-shaped pipeline, and the pipeline segment of the second heat exchange pipeline 224 extending into the liquid storage device 1 is curved into a spiral shape to increase the contact area between the second heat exchange pipeline 224 and the liquid medium in the liquid storage device 1, thereby improving the heat exchange efficiency.

[0078] In some embodiments, the motor waste heat exchange assembly 22 further comprises a second cut-off member arranged between the liquid storage device 1 and the motor heat exchange system.

[0079] In some embodiments, the second cut-off member comprises a second three-way valve 225 and a sixth connecting pipeline 223.

[0080] The first valve port of the second three-way valve 225 is connected with one end of the fourth connecting pipeline 221, the second valve port of the second three-way valve 225 is connected with one end of the second heat exchange pipeline 224, and the third valve port of the second three-way valve 225 is connected with one end of the sixth connecting pipeline 223. The other end of the sixth connecting pipeline 223 is connected with the second heat exchange pipeline 224 and the fifth connecting pipeline 222.

[0081] As an example, when the vehicle is started, a large amount of heat is generated by the chemical reaction inside the power battery during operation. The motor waste heat exchange assembly 22 is mainly used to dissipate the heat generated by the power battery to ensure that the battery works in a suitable temperature range. The motor heat exchange system usually comprises a cooling water channel, a radiator, a water pump, and the like, so that the cooling liquid circulates in the cooling water channel to absorb and take away the heat on the surface of the power battery. Through the motor waste heat exchange assembly 22, heat exchange is performed between the motor heat exchange system and the liquid storage device 1, so that the heat generated by the battery is taken away, and at the same time, the heat can also be used to heat the liquid medium in the liquid storage device 1.

[0082] With reference to FIG. 4, as an example, when the motor heat exchange system needs to heat the liquid medium in the liquid storage device 1, the first valve port and the second valve port of the second three-way valve 225 are communicated, so that the cooling liquid in the motor heat exchange system flows into one end of the second heat exchange pipeline 224 through the fourth connecting pipeline 221, and exchanges heat with the liquid medium in the liquid storage device 1 when the cooling liquid flows through the pipe segment in the liquid storage device 1 extending from the second heat exchange pipeline 224, and then the cooling liquid flows out from the other end of the second heat exchange pipeline 224 to the fifth connecting pipeline 222, and the cooling liquid is transmitted to the motor heat exchange system through the fifth connecting pipeline 222, so as to realize the heat exchange between the cooling liquid in the motor heat exchange system and the liquid medium in the liquid storage device 1.

[0083] As an example, when the motor heat exchange system does not need to heat the liquid medium in the liquid storage device 1, the first valve port and the third valve port of the second three-way valve 225 are communicated, so that the cooling liquid of the motor heat exchange system is transmitted to the motor heat exchange system through the fourth connecting pipeline 221, the sixth connecting pipeline 223 and the fifth connecting pipeline 222 in turn, without passing through the second heat exchange pipeline 224.

[0084] In the above embodiment, by controlling the second three-way valve 225, the communication or cut-off between the motor heat exchange system and the liquid storage device 1 is realized, so as to realize the heat exchange control between the motor heat exchange system and the liquid storage device 1.

[0085] With reference to FIG. 2, in some embodiments, the heat exchange device 2 further comprises an exhaust heat exchange assembly 23, which is arranged on the outer wall of the exhaust pipe of the vehicle and located in the liquid storage device 1; wherein the exhaust pipe passes through the liquid storage device 1, so that the exhaust heat exchange assembly 23 transmits the heat of the exhaust pipe to the liquid medium in the liquid storage device 1.

[0086] The exhaust pipe is used for discharging exhaust gas after the engine combustion process. During the operation of the engine, the fuel and air are mixed and burned in the combustion chamber, and the high-temperature and high-pressure gas pushes the piston to move, and then the gas is discharged from the engine through the exhaust valve to become exhaust gas, so that the exhaust gas contains a large amount of heat energy. By directly passing the exhaust pipe through the liquid storage device 1, the outer wall of the exhaust pipe can directly contact the liquid medium in the liquid storage device 1 to heat the liquid medium, and the exhaust heat exchange assembly 23 arranged on the outer wall of the exhaust pipe can improve the heat exchange efficiency.

[0087] With reference to FIG. 3, as an example, the exhaust heat exchange assembly 23 comprises a heat exchange fin 231 arranged on the outer wall of the pipe segment of the exhaust pipe located in the liquid storage device 1.

[0088] The heat exchange sheet 231 can be wrapped on the outer wall of the tail gas pipe and tightly contact with the outer wall of the tail gas pipe for heat transfer. The heat exchange sheet 231 can be provided with a corrugated or uneven surface to further improve the heat exchange efficiency.

[0089] It should be noted that the heat management system can include one of the engine heat exchange assembly 21, the motor waste heat exchange assembly 22 and the tail gas heat exchange assembly 23, or can include a combination of multiple or all of the engine heat exchange assembly 21, the motor waste heat exchange assembly 22 and the tail gas heat exchange assembly 23.

[0090] Referring to FIG. 2, in some embodiments, the heat exchange device 2 further includes a battery heating assembly 24 electrically connected to the power battery of the vehicle, and the battery heating assembly 24 is partially arranged in the liquid storage device 1.

[0091] As an example, the battery heating assembly 24 includes an electric heater 241 and a control switch K. The electric heater 241 is located in the liquid storage device 1, the positive electrode of the electric heater 241 is connected to the positive electrode of the power battery of the vehicle, and the negative electrode of the electric heater 241 is connected to the negative electrode of the power battery. The control switch K is connected in series to the positive electrode or the negative electrode of the electric heater 241.

[0092] As an example, the electric heater 241 can be a positive temperature coefficient thermistor. When the battery heating assembly 24 heats the liquid medium in the liquid storage device 1, the control switch K is closed, and the power battery discharges to the electric heater 241. When the current passes through the electric heater 241, the electric heater 241 generates heat, thereby heating the liquid medium.

[0093] Referring to FIGS. 3 and 4, in some embodiments, the spraying device 3 includes a water pump 31, a spraying pipeline 32 and a nozzle 33.

[0094] The water pump 31 is arranged in the liquid storage device 1; one end of the spraying pipeline 32 is in communication with the liquid outlet of the water pump 31, and the other end extends to the outside of the liquid storage device 1 and is in communication with the nozzle 33.

[0095] As an example, the water outlet of the nozzle 33 can be directed to the wheels of the vehicle.

[0096] In the above embodiment, the heated liquid medium is extracted by the water pump 31 arranged in the storage device, then sent to the nozzle 33 by the spraying pipeline 32, and then sprayed to the wheels by the nozzle 33. In this case, the heated liquid medium can melt the ice and snow at the wheels, form a water film, and enhance the grip of the wheels, thereby reducing the slip of the wheels and helping to realize the snow escape of the vehicle.

[0097] Referring to Fig. 5, in some embodiments, the thermal management system further comprises a controller 5 and a first temperature sensor 4 for collecting a first temperature of the liquid medium, a second temperature sensor for collecting a second temperature of the coolant of the engine heat exchange system is arranged in the engine heat exchange system, and the controller 5 is connected with the first temperature sensor 4 and the second temperature sensor. The controller 5 is configured to output an engine heat exchange signal to the engine heat exchange assembly 21 to control the engine heat exchange system to exchange heat with the liquid medium when the second temperature is greater than the first temperature.

[0098] For example, in combination with Fig. 3 and Fig. 5, CS1 represents the engine heat exchange signal, which is used to control the conduction state of the first three-way valve 215 in the engine heat exchange assembly 21.

[0099] In the above-mentioned embodiments, when the engine starts to start, the coolant in the engine heat exchange system has not been fully circulated, and the temperature thereof is relatively low. If the engine heat exchange system exchanges heat with the liquid medium at this time, the energy of the liquid medium may be lost. By arranging the controller 5, the first temperature sensor 4 and the second temperature sensor, when the controller 5 detects that the second temperature is higher than the first temperature, the controller 5 outputs the engine heat exchange signal to the engine heat exchange assembly 21 to start the heat exchange between the engine heat exchange system and the liquid medium, so as to transfer the heat of the coolant in the engine heat exchange system to the liquid medium.

[0100] In some embodiments, the motor heat exchange system is provided with a third temperature sensor for collecting a third temperature of the coolant of the motor heat exchange system; the controller 5 is connected with the first temperature sensor 4 and the third temperature sensor. The controller 5 is configured to output a motor heat exchange signal to the motor waste heat exchange assembly 22 to control the motor heat exchange system to exchange heat with the liquid medium when the third temperature is greater than the first temperature.

[0101] For example, in combination with Fig. 3 and Fig. 5, CS2 represents the motor heat exchange signal, which is used to control the conduction state of the second three-way valve 225 in the motor waste heat exchange assembly 22.

[0102] In the above-mentioned embodiments, when the vehicle starts, the coolant in the motor heat exchange system has not been fully circulated, and the temperature thereof is relatively low. If the motor heat exchange system exchanges heat with the liquid medium at this time, the energy of the liquid medium may be lost. By arranging the controller 5, the first temperature sensor 4 and the third temperature sensor, when the controller 5 detects that the third temperature is higher than the first temperature, the controller 5 outputs the motor heat exchange signal to the motor waste heat exchange assembly 22 to start the heat exchange between the motor heat exchange system and the liquid medium, so as to transfer the heat of the coolant in the motor heat exchange system to the liquid medium.

[0103] Further, the controller 5 is also connected with the control switch K, and is configured to output a battery heating signal to the control switch K when the first temperature is less than the preset temperature threshold, so that the control switch K is closed, thereby realizing that the liquid medium can be heated by discharging the power battery when the temperature of the liquid medium does not reach the preset threshold. As an example, CS3 in FIG. 4 and FIG. 5 represents the battery heating signal.

[0104] In some embodiments, the thermal management system further comprises a wheel speed sensor 6. The wheel speed sensor 6 is arranged on a wheel of the vehicle to collect a wheel speed and output a wheel speed signal. The controller 5 is connected with the wheel speed sensor 6, and the controller 5 is configured to output a prompt signal to a human-computer interaction system of the vehicle in response to the wheel speed signal, so as to prompt to turn on the spraying device 3 to spray the liquid medium in the liquid storage device 1 to the wheel.

[0105] As an example, one corresponding wheel speed sensor 6 is arranged on each wheel, and the controller 5 compares the wheel speed signals of each wheel speed sensor 6 to determine the wheel in the slipping state. When the driver turns on the escape function based on the prompt signal, the controller 5 sends a spraying control signal to the corresponding spraying device 3 based on the determined wheel in the slipping state, so as to control the spraying device 3 on the wheel in the slipping state to be turned on.

[0106] According to a second aspect of the present disclosure, some embodiments of the present disclosure provide a vehicle, as shown in FIG. 3 and FIG. 4, the vehicle 1000 comprises the vehicle thermal management system described above.

[0107] Since the vehicle 1000 comprises the vehicle thermal management system, when the wheels of the vehicle 1000 slip on the snow, the spraying device 3 is controlled to be started to spray the liquid medium in the liquid storage device 1 to the wheels of the vehicle, and the heated liquid medium is distributed on the contact surface between the wheels and the snow as the wheels slip and rotate, so as to melt the ice and snow, and the water film formed by the melting of the ice and snow is more likely to provide friction to the wheels than the solid ice and snow, so as to improve the grip ability of the wheels, thereby helping the vehicle 1000 to escape from the snow.

[0108] In addition, the vehicle 1000 also has other beneficial effects of the vehicle thermal management system described above, and the present disclosure will not be repeated here.

[0109] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle, or a new energy vehicle, and the present disclosure does not make specific limitation thereto.

[0110] In the description of the disclosure, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the disclosure, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0111] In the above embodiments, the description of each embodiment is focused on, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0112] The embodiments, implementation manners and related technical features of the disclosure can be combined or replaced with each other without conflict.

[0113] The above is only a preferred embodiment of the disclosure, and does not limit the disclosure in any form. Any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the disclosure still belongs to the scope of the technical solution of the disclosure.

Claims

1. A vehicle thermal management system, comprising: a liquid storage device (1) configured to store a liquid medium; a heat exchange device (2) connected to the liquid storage device and configured to heat the liquid medium in the liquid storage device; and a spraying device (3) connected to the liquid storage device and configured to spray the liquid medium in the liquid storage device to wheels of the vehicle. The heat exchange device comprises an engine heat exchange assembly (21) connected to an engine heat exchange system of the vehicle; 2. The vehicle thermal management system of claim 1, wherein, the engine heat exchange assembly at least partially extends into the liquid storage device to transfer heat from the engine heat exchange system to the liquid medium in the liquid storage device when the engine heat exchange assembly is in communication with the engine heat exchange system. The engine heat exchange assembly comprises a first connecting pipeline (211), a second connecting pipeline (212), and a first heat exchange pipeline (214); 3. The vehicle thermal management system of claim 2, wherein, one end of the first connecting pipeline is connected to one end of the first heat exchange pipeline, and the other end of the first connecting pipeline is connected to the engine heat exchange system; one end of the second connecting pipeline is connected to the other end of the first heat exchange pipeline, and the other end of the second connecting pipeline is connected to the engine heat exchange system; wherein a part of the first heat exchange pipeline extends into the liquid storage device. The engine heat exchange assembly further comprises a first cut-off member disposed between the liquid storage device and the engine heat exchange system.

4. The vehicle thermal management system of claim 3, wherein, The first cut-off member comprises a third connecting pipeline (213) and a first three-way valve (215); 5. The vehicle thermal management system of claim 4, wherein, the first valve port of the first three-way valve is connected to one end of the first connecting pipeline, the second valve port is connected to one end of the first heat exchange pipeline, and the third valve port is connected to one end of the third connecting pipeline; the other end of the third connecting pipeline is connected to the other end of the first heat exchange pipeline and the second connecting pipeline. The vehicle thermal management system further comprises a controller (5) and a first temperature sensor (4) configured to collect a first temperature of the liquid medium, and a second temperature sensor configured to collect a second temperature of a coolant of the engine heat exchange system, the controller is connected to the first temperature sensor and the second temperature sensor, and configured to output an engine heat exchange signal to the engine heat exchange assembly to control the engine heat exchange system to exchange heat with the liquid medium when the second temperature is greater than the first temperature.

6. The vehicle thermal management system of any one of claims 2 to 5, wherein, The heat exchange device comprises:

7. The vehicle thermal management system of any one of claims 1 to 6, wherein, a motor waste heat exchange assembly (22) connected to a motor heat exchange system of the vehicle, the motor waste heat exchange assembly at least partially extends into the liquid storage device to transfer heat from the motor heat exchange system to the liquid medium in the liquid storage device when the motor waste heat exchange assembly is in communication with the motor heat exchange system. The motor waste heat exchange assembly comprises a fourth connecting pipeline (221), a fifth connecting pipeline (222), and a second heat exchange pipeline (224); 8. The vehicle thermal management system of claim 7, wherein, one end of the fourth connecting pipeline is connected to one end of the second heat exchange pipeline, and the other end of the fourth connecting pipeline is connected to the motor heat exchange system; ​ One end of the fifth connecting pipeline is connected with the other end of the second heat exchange pipeline, and the other end of the fifth connecting pipeline is connected with the motor heat exchange system. Part of the second heat exchange pipeline extends into the liquid storage device.

9. The vehicle thermal management system of claim 8, wherein, The motor waste heat exchange assembly further comprises a second cut-off member arranged between the liquid storage device and the motor heat exchange system.

10. The vehicle thermal management system of claim 9, wherein, The second cut-off member comprises a second three-way valve (225) and a sixth connecting pipeline (223). The first valve port of the second three-way valve is connected with one end of the fourth connecting pipeline, the second valve port is connected with one end of the second heat exchange pipeline, and the third valve port is connected with one end of the sixth connecting pipeline. The other end of the sixth connecting pipeline is connected with the second heat exchange pipeline and the fifth connecting pipeline.

11. The vehicle thermal management system according to any one of claims 7 to 10, further comprising a controller and a first temperature sensor for collecting a first temperature of the liquid medium, and the motor heat exchange system is provided with a third temperature sensor for collecting a third temperature of the cooling liquid of the motor heat exchange system; the controller is connected with the first temperature sensor and the third temperature sensor, and is configured to output a motor heat exchange signal to the motor waste heat exchange assembly to control the motor heat exchange system to exchange heat with the liquid medium when the third temperature is greater than the first temperature.

12. The vehicle thermal management system of any one of claims 1 to 11, wherein, The heat exchange device comprises a tail gas heat exchange assembly (23) arranged on the outer wall of the tail gas pipe of the vehicle and located in the liquid storage device; wherein the tail gas pipe passes through the liquid storage device, so that the tail gas heat exchange assembly transmits heat of the tail gas pipe to the liquid medium in the liquid storage device.

13. The vehicle thermal management system of claim 12, wherein, The tail gas heat exchange assembly comprises heat exchange fins (231) arranged on the outer wall of the pipe section of the tail gas pipe located in the liquid storage device.

14. The vehicle thermal management system of any one of claims 1 to 13, wherein, The heat exchange device comprises a battery heating assembly (24) electrically connected with the power battery of the vehicle, and the battery heating assembly is partially arranged in the liquid storage device.

15. The vehicle thermal management system of claim 14, wherein, The battery heating assembly comprises an electric heater (241) and a control switch. The electric heater is located in the liquid storage device, the positive electrode of the electric heater is connected with the positive electrode of the power battery of the vehicle, and the negative electrode of the electric heater is connected with the negative electrode of the power battery. The control switch is connected in series with the positive electrode or the negative electrode of the electric heater.

16. The vehicle thermal management system of any one of claims 1 to 15, wherein, The injection device comprises a water pump (31), an injection pipeline (32) and a nozzle (33). The water pump is arranged in the liquid storage device. One end of the injection pipeline is in communication with the liquid outlet of the water pump, and the other end extends to the outside of the liquid storage device and is in communication with the nozzle.

17. The vehicle thermal management system of any one of claims 1 to 16, wherein, The vehicle thermal management system further comprises a controller and a wheel speed sensor (6). The wheel speed sensor is arranged on the wheel of the vehicle to collect the rotating speed of the wheel and output a rotating speed signal. The vehicle thermal management system further comprises a controller and a wheel speed sensor (6). The wheel speed sensor is arranged on the wheel of the vehicle to collect the rotating speed of the wheel and output a rotating speed signal. The controller is connected with the wheel speed sensor, and the controller outputs a prompt signal to a human-machine interaction system of the vehicle in response to the rotation speed signal to prompt to turn on the spraying device to spray the liquid medium in the storage device to the wheel.

18. A vehicle comprising a vehicle thermal management system, the vehicle thermal management system comprising: a storage device for storing liquid medium; a heat exchange device connected with the storage device for heating the liquid medium in the storage device; and a spraying device connected with the storage device in communication for spraying the liquid medium in the storage device to a wheel of the vehicle. The heat exchange device comprises an engine heat exchange assembly connected with an engine heat exchange system of the vehicle; 19. The vehicle of claim 18, wherein, The engine heat exchange assembly at least partially extends into the storage device to transfer heat of the engine heat exchange system to the liquid medium in the storage device when the engine heat exchange assembly is in communication with the engine heat exchange system. The engine heat exchange assembly comprises a first connecting pipeline, a second connecting pipeline and a first heat exchange pipeline; 20. The vehicle of claim 19, wherein, One end of the first connecting pipeline is connected with one end of the first heat exchange pipeline, and the other end of the first connecting pipeline is connected with the engine heat exchange system; One end of the second connecting pipeline is connected with the other end of the first heat exchange pipeline, and the other end of the second connecting pipeline is connected with the engine heat exchange system; Part of the first heat exchange pipeline extends into the storage device. ​

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