Thermal management system, control method and vehicle

Abstract

The present application belongs to the field of vehicle technology, and specifically relates to a thermal management system, a control method and a vehicle. The thermal management system includes a refrigerant circuit, a heat exchange component and a temperature control component. The refrigerant circuit includes a first output end and a second output end, and the heat output of the first output end is different from that of the second output end; the heat exchange component includes a first heat exchanger and a second heat exchanger; the temperature control component includes a first temperature control circuit and a second temperature control circuit; in cooling mode, the first output end is connected to the first temperature control circuit through the first heat exchanger, and the second output end is connected to the second temperature control circuit through the second heat exchanger; in heating mode, the first output end is connected to the second temperature control circuit through the second heat exchanger, and the second output end is connected to the first temperature control circuit through the first heat exchanger. The technical solution of the present application realizes the simple structural layout of the thermal management system to a certain extent, saves layout space, and at the same time takes into account the comfort of the whole vehicle.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a thermal management system, a control method and a vehicle. Background Art

[0002] As the occupancy rate of new energy vehicles gradually increases, users have put forward higher requirements on the safety, range and energy saving of new energy vehicles. Among them, the thermal management system of the vehicle plays a key role in the performance of the whole vehicle.

[0003] Specifically, the vehicle's thermal management system is most closely related to the powertrain system and the passenger compartment. The powertrain system is mainly composed of power battery packs, motors, and electronic control components related to the vehicle. These key components have high requirements for working temperature during operation. The appropriate working temperature not only greatly affects the working efficiency of these components, but also affects the safety of the components and the vehicle. The thermal management system of the related technical solution occupies a large layout space and the layout in the cabin is complex. It can be seen that a thermal management system is urgently needed to overcome the above-mentioned defects of the thermal management system in the related technical solution.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present application is to provide a thermal management system, a control method and a vehicle, which to a certain extent achieve a simple structural layout of the thermal management system and save layout space.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to one aspect of an embodiment of the present application, a thermal management system is provided, the thermal management system comprising:

[0008] A refrigerant circuit includes a first output end and a second output end, wherein the first output end and the second output end output different amounts of heat;

[0009] A heat exchange assembly, comprising a first heat exchanger and a second heat exchanger;

[0010] A temperature control component, comprising a first temperature control loop and a second temperature control loop;

[0011] In cooling mode, the first output end is connected to the first temperature control loop through the first heat exchanger, and the second output end is connected to the second temperature control loop through the second heat exchanger;

[0012] In the heating mode, the first output end is connected to the second temperature control loop through the second heat exchanger, and the second output end is connected to the first temperature control loop through the first heat exchanger.

[0013] In some embodiments of the present application, based on the above technical solution, the thermal management system also includes a first three-way valve, a first end of the first three-way valve is connected to the first output end, a second end is connected to the first temperature control circuit, and a third end is connected to the second temperature control circuit; the first three-way valve is used to control the first output end to be connected to the first temperature control circuit, or the first output end to be connected to the second temperature control circuit.

[0014] In some embodiments of the present application, based on the above technical solution, the thermal management system also includes a first proportional three-way valve, and the first temperature control circuit includes a first sub-temperature control circuit and a second sub-temperature control circuit; the first end of the first proportional three-way valve is connected to one end of the first three-way valve, the second end is connected to the first sub-temperature control circuit, and the third end is connected to the second sub-temperature control circuit.

[0015] In some embodiments of the present application, based on the above technical solution, the thermal management system also includes a second three-way valve, a first end of the second three-way valve is connected to the second output end, a second end is connected to the first temperature control loop, and a third end is connected to the second temperature control loop; the second three-way valve is used to control the second output end to be connected to the first temperature control loop, or the second output end to be connected to the second temperature control loop.

[0016] In some embodiments of the present application, based on the above technical solution, the thermal management system also includes a second proportional three-way valve, and the first temperature control circuit includes a first sub-temperature control circuit and a second sub-temperature control circuit; the first end of the second proportional three-way valve is connected to the second three-way valve, the second end is connected to the first sub-temperature control circuit, and the third end is connected to the second sub-temperature control circuit.

[0017] In some embodiments of the present application, based on the above technical solution, the refrigerant circuit includes a water evaporator, a compressor and a water condenser, and the water evaporator, the compressor and the water condenser are connected in series in sequence to form a circulation circuit.

[0018] In some embodiments of the present application, based on the above technical solution, the second temperature control circuit includes a radiator, and in a cooling state, the second heat exchanger is connected to the radiator.

[0019] In some embodiments of the present application, based on the above technical solution, the second temperature control circuit includes a heating component, and the circuit where the heating component is located is connected in parallel with the circuit where the radiator is located; in the heating state, the second heat exchanger is connected to the heating component.

[0020] According to one aspect of an embodiment of the present application, a thermal management system control method is provided, which is applied to the thermal management system as described above, and the method includes:

[0021] If a cooling signal is received, the heat at the first output end is heat-exchanged with the first temperature control loop through the first heat exchanger to cool the first temperature control loop, and the heat at the second output end is heat-exchanged with the second temperature control loop through the second heat exchanger to dissipate heat;

[0022] If a heating signal is received, the heat at the second output end is heat exchanged with the first temperature control loop through the first heat exchanger to heat the first temperature control loop, and the heat at the first output end is heat exchanged with the second temperature control loop through the second heat exchanger to heat.

[0023] According to one aspect of an embodiment of the present application, a vehicle is provided that includes the thermal management system as described above.

[0024] In the technical solution provided in the embodiment of the present application, the first output end and the second output end are connected to the first temperature control circuit or the second temperature control circuit through the first heat exchanger or the second heat exchanger, respectively, so as to realize the cooling and heating functions, so as to realize the control of the cabin temperature, and the cooling system of the thermal management system is integrated, and the overall structure is relatively compact, saving the layout space. That is, the technical solution of the present application realizes the simple structure layout of the thermal management system to a certain extent, saving the layout space, and taking into account the comfort of the whole vehicle at the same time.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The structural diagram of a thermal management system using an embodiment of the present application is schematically shown.

[0028] Figure 2 A flow chart of a thermal management system control method according to an embodiment of the present application is schematically shown.

[0029] Figure 3A circuit diagram of a thermal management system according to an embodiment of the present application is schematically shown.

[0030] Figure 4 A circuit diagram of a thermal management system according to another embodiment of the present application is schematically shown.

[0031] Figure 5 A circuit diagram of a thermal management system according to another embodiment of the present application is schematically shown.

[0032] Figure 6 A circuit diagram of a thermal management system according to another embodiment of the present application is schematically shown.

[0033] Figure 7 A circuit diagram of a thermal management system according to another embodiment of the present application is schematically shown.

[0034] Among them, 10 is a refrigerant circuit; 20 is a heat exchange component; 21 is a first heat exchanger; 22 is a second heat exchanger; 31 is a first temperature control circuit; 32 is a second temperature control circuit; 41 is a first three-way valve; 42 is a first proportional three-way valve; 43 is a second three-way valve; 44 is a second proportional three-way valve. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0036] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0037] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0038] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0039] Generally, the thermal management system of the relevant technical solution mainly includes an air-conditioning refrigerant circuit, an air-conditioning heating circuit, a battery temperature control circuit, and an electric drive temperature control circuit. Among them, the air-conditioning refrigerant circuit is mainly composed of a compressor, a condenser, an expansion valve, an evaporator, pipelines, etc. Specifically, as for the structural layout, the condenser is often arranged at the front end, and forms a front-end cooling module with the radiator and the cooling fan. The evaporator is arranged in the air-conditioning box, and the air-conditioning box is often arranged under the instrument panel of the passenger compartment. In this way, the refrigerant circuit requires a longer refrigeration pipeline and occupies a larger layout space.

[0040] In addition, in the relevant technical scheme, in the heating mode, the heating capacity of the heat pump mode is insufficient, and PTC heating is still needed to supplement or replace the heat pump system to provide heating function for the passenger compartment and battery, which has relatively low energy efficiency.

[0041] In order to solve the above problems, the present application proposes a thermal management system, which includes: a refrigerant circuit, a heat exchange component and a temperature control component, wherein the refrigerant circuit includes a first output end and a second output end, and the heat output of the first output end is different from that of the second output end; the heat exchange component includes a first heat exchanger and a second heat exchanger; the temperature control component includes a first temperature control circuit and a second temperature control circuit; in the cooling mode, the first output end is connected to the first temperature control circuit through the first heat exchanger, and the second output end is connected to the second temperature control circuit through the second heat exchanger; in the heating mode, the first output end is connected to the second temperature control circuit through the second heat exchanger, and the second output end is connected to the first temperature control circuit through the first heat exchanger. In this way, the first output end and the second output end are connected to the first temperature control circuit or the second temperature control circuit through the first heat exchanger or the second heat exchanger, respectively, so as to realize the cooling and heating functions, so as to realize the control of the cabin temperature, and the cooling system of the thermal management system is integrated, and the overall structure is relatively compact, saving the layout space. That is, the technical solution of the present application achieves, to a certain extent, a simple structural layout of the thermal management system, saves layout space, and at the same time takes into account the comfort of the entire vehicle.

[0042] The thermal management system, control method and vehicle provided by the present application are described in detail below in conjunction with specific implementation methods.

[0043] See also Figure 1 , Figure 1 The following schematically shows a schematic diagram of the structure of a thermal management system using an embodiment of the present application. The thermal management system includes:

[0044] The refrigerant circuit 10 includes a first output end and a second output end, and the heat output from the first output end is different from that from the second output end;

[0045] The heat exchange assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22;

[0046] The temperature control component includes a first temperature control loop 31 and a second temperature control loop 32;

[0047] In cooling mode, the first output end is connected to the first temperature control loop 31 through the first heat exchanger 21, and the second output end is connected to the second temperature control loop 32 through the second heat exchanger 22;

[0048] In the heating mode, the first output end is connected to the second temperature control loop 32 through the second heat exchanger 22 , and the second output end is connected to the first temperature control loop 31 through the first heat exchanger 21 .

[0049] Among them, the refrigerant circuit 10 may include a circuit formed by an evaporator mixed condenser in series, and the two output ends of the refrigerant circuit 10 may be the output end of the water condenser and the output end of the water evaporator, that is, the first output end and the second output end, one output end outputs cold energy, and the other output end outputs heat energy. Those skilled in the art can control the first output end and the second output end to output and connect to the first temperature control circuit 31 or the second temperature control circuit 32 according to different requirements of cooling or heating, so as to achieve temperature control. When the first output end and the second output end are connected to the first temperature control circuit 31 or the second temperature control circuit 32, the connection can be achieved through the first heat exchanger or the second heat exchanger, so as to achieve cooling or heating functions.

[0050] Secondly, it should be noted that the refrigerant circuit 10 is integrated. In this way, the refrigerant circuit 10 is compactly arranged in the cabin, and the refrigerant does not flow through the passenger compartment, thereby improving the safety of the system.

[0051] In the technical solution provided in the embodiment of the present application, the first output end and the second output end are connected to the first temperature control loop 31 or the second temperature control loop 32 through the first heat exchanger or the second heat exchanger 22, respectively, so as to realize the cooling and heating functions to realize the control of the cabin temperature, and the cooling system of the thermal management system is integrated, and the overall structure is relatively compact, saving the layout space. That is, the technical solution of the present application realizes the simple structure layout of the thermal management system to a certain extent, saving the layout space, and taking into account the comfort of the whole vehicle at the same time.

[0052] In one embodiment of the present application, specifically, the refrigerant circuit 10 includes a water evaporator W-EVA, a compressor ECP and a water condenser W-CON, and the water evaporator W-EVA, the compressor ECP and the water condenser W-CON are connected in series in sequence to form a circulation loop.

[0053] Specifically, a gas-liquid separator ACC is arranged at the inlet of the compressor ECP. The compressor ECP compresses the low-temperature and low-pressure gaseous refrigerant from the water evaporator W-EVA into a high-temperature and high-pressure refrigerant gas. The high-temperature and high-pressure refrigerant gas then passes through the water condenser W-CON to complete liquefaction and heat release. The heat is absorbed by the water side of the water condenser W-CON. The refrigerant phase changes and releases heat to become a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid is refrigerated and then throttled and depressurized by the electronic expansion valve to become a medium-temperature and low-pressure liquid. The very fine mist droplets formed after throttling and depressurization are sprayed into the water evaporator W-EVA to complete vaporization and heat absorption. The cold is absorbed by the water side circuit of the water evaporator W-EVA. Among them, the output end of the water evaporator and the output end of the water condenser are respectively used as the first output end and the second output end. Different heat is output through the first output end and the second output end, so that cooling or heating control can be achieved.

[0054] In this way, the refrigerant circuit is integrated so that the refrigerant circuit is compactly arranged in the cabin, so that the refrigerant does not flow through the passenger compartment, thereby improving the safety of the system.

[0055] In one embodiment of the present application, the thermal management system further includes a first three-way valve 41, a first end of the first three-way valve 41 is connected to the first output end, a second end of the first three-way valve 41 is connected to the first temperature control loop 31, and a third end of the first three-way valve 41 is connected to the second temperature control loop 32; the first three-way valve 41 is used to control the first output end to be connected to the first temperature control loop 31, or the first output end to be connected to the second temperature control loop 32. If the first output end is connected to the first temperature control loop, the temperature of the first temperature control loop can be refrigerated and controlled.

[0056] Optionally, a water level sensor T may be provided between the first output end and the first three-way valve 41 , and the water temperature in the pipeline may be controlled by providing a water temperature sensor.

[0057] In this way, by arranging the first three-way valve at the first output end, the heat output of the first output end can be controlled to be output to the first temperature control circuit or the second temperature control circuit, so as to realize the temperature control of the first temperature control circuit or the second temperature control circuit. The control structure is simple and easy to realize control.

[0058] In one embodiment of the present application, the thermal management system also includes a first proportional three-way valve 42, and the first temperature control circuit 31 includes a first sub-temperature control circuit and a second sub-temperature control circuit; the first end of the first proportional three-way valve 42 is connected to one end of the first three-way valve 41, the second end is connected to the first sub-temperature control circuit, and the third end is connected to the second sub-temperature control circuit.

[0059] Specifically, the first sub-temperature control loop may be a loop where the battery is located, and the second temperature control loop 32 may be a loop where the air conditioner is located. A first proportional three-way valve 42 is provided between the first three-way valve 41 and the first heat exchanger 21, and the heat output from the first output end can be conducted to the first sub-temperature control loop or the second sub-temperature control loop by providing the first proportional three-way valve 42.

[0060] Taking the connection between the first output end and the first temperature control circuit as an example, since the first output end outputs refrigerant, by setting the first proportional three-way valve, the refrigerant can be controlled to perform heat exchange with the first sub-temperature control circuit where the battery is located or with the second sub-temperature control circuit where the air conditioner is located, so as to achieve refrigeration of the circuit where the battery is located or the circuit where the air conditioner is located.

[0061] In this way, a first proportional three-way valve 42 is arranged between the first three-way valve 41 and the first heat exchanger. By setting the first proportional three-way valve 42, the heat output from the first output end can be conducted to the first sub-temperature control circuit or the second sub-temperature control circuit, which is convenient for realizing temperature control of the first sub-temperature control circuit and the second sub-temperature control circuit. The control structure is simple and easy to realize control.

[0062] In one embodiment of the present application, the thermal management system also includes a second three-way valve 43, a first end of the second three-way valve 43 is connected to the second output end, a second end is connected to the first temperature control loop 31, and a third end is connected to the second temperature control loop 32; the second three-way valve 43 is used to control the second output end to be connected to the first temperature control loop 31, or the second output end to be connected to the second temperature control loop 32.

[0063] Optionally, a water level sensor T may be provided between the second output end and the second three-way valve 43 , and the water temperature in the pipeline may be controlled by providing a water temperature sensor.

[0064] In this way, by providing the second three-way valve 43 at the second output end, the heat output of the second output end can be controlled to be output to the first temperature control loop 31 or the second temperature control loop 32, so as to realize the temperature control of the first temperature control loop 31 or the second temperature control loop 32. The control structure is simple and easy to realize control.

[0065] In one embodiment of the present application, the thermal management system also includes a second proportional three-way valve 44, and the first temperature control circuit 31 includes a first sub-temperature control circuit and a second sub-temperature control circuit; the first end of the second proportional three-way valve 44 is connected to the second three-way valve 43, the second end is connected to the first sub-temperature control circuit, and the third end is connected to the second sub-temperature control circuit.

[0066] Specifically, the first sub-temperature control loop may be a loop where the battery is located, and the second temperature control loop 32 may be a loop where the air conditioner is located. A second proportional three-way valve 44 is provided between the second three-way valve 43 and the first heat exchanger 21, and the heat output from the second output end can be conducted to the first sub-temperature control loop or the second sub-temperature control loop by providing the second proportional three-way valve 44.

[0067] In this way, a second proportional three-way valve 44 is arranged between the second three-way valve 43 and the first heat exchanger. By arranging the second proportional three-way valve 44, the heat output from the second output end can be conducted to the first sub-temperature control circuit or the second sub-temperature control circuit, so as to facilitate the temperature control of the first sub-temperature control circuit and the second sub-temperature control circuit. The control structure is simple and easy to control.

[0068] In one embodiment of the present application, the second temperature control loop 32 includes a radiator, and in the cooling state, the second heat exchanger 22 is connected to the radiator. In this way, the radiator is provided to facilitate the dissipation of heat at the second output end.

[0069] In one embodiment of the present application, the second temperature control circuit 32 includes a heating component, and the circuit where the heating component is located is connected in parallel with the circuit where the radiator is located; in the heating state, the second heat exchanger 22 is connected to the heating component. In this way, the waste heat of the second temperature control circuit is absorbed back, thereby realizing heat circulation.

[0070] It should be noted that although the steps of the method in the present application are described in a specific order in the drawings, this does not require or imply that the steps must be performed in this specific order, or that all the steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps, etc.

[0071] The following introduces a method embodiment of the present application, which can be applied to the thermal management system in the above-mentioned embodiment of the present application. Figure 2 The flowchart of the thermal management system control method using an embodiment of the present application is schematically shown. The execution subject of the method may be, for example, a controller, such as Figure 2 As shown, the method comprises the following steps:

[0072] Step S201, if a cooling signal is received, heat from the first output end is heat exchanged with the first temperature control loop through the first heat exchanger to cool the first temperature control loop, and heat from the second output end is heat exchanged with the second temperature control loop through the second heat exchanger to dissipate heat;

[0073] Step S202, if a heating signal is received, the heat at the second output end is heat exchanged with the first temperature control loop through the first heat exchanger to heat the first temperature control loop, and the heat at the first output end is heat exchanged with the second temperature control loop through the second heat exchanger to heat.

[0074] In the technical solution provided in the embodiment of the present application, the first output end and the second output end are connected to the first temperature control circuit or the second temperature control circuit through the first heat exchanger or the second heat exchanger, respectively, so as to realize the cooling and heating functions, so as to realize the control of the cabin temperature, and the cooling system of the thermal management system is integrated, and the overall structure is relatively compact, saving the layout space. That is, the technical solution of the present application realizes the simple structure layout of the thermal management system to a certain extent, saving the layout space, and taking into account the comfort of the whole vehicle at the same time.

[0075] In order to facilitate understanding of the solution of the embodiment of the present application, the following examples are given, see Figure 3 , Figure 3 A circuit diagram of a thermal management system using an embodiment of the present application is schematically shown. The diagram shows that the first output end is connected to the circuit where the air conditioner is located in the first temperature control circuit (i.e., the air conditioner temperature control water circuit) through the first three-way valve, and the second output end is connected to the second temperature control circuit (also referred to as the electric drive temperature control water circuit) through the second three-way valve and the second heat exchanger.

[0076] Specifically, when the controller receives a passenger compartment cooling signal from the air conditioning system, a gas-liquid separator ACC is arranged at the inlet of the compressor ECP. The compressor ECP compresses the low-temperature and low-pressure gaseous refrigerant from the water evaporator W-EVA into a high-temperature and high-pressure refrigerant gas, which then passes through the water condenser W-CON to complete liquefaction and heat release. The heat is absorbed by the water side of the water condenser W-CON, and the refrigerant phase changes and releases heat to become a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid is refrigerated and then throttled and depressurized by the electronic expansion valve to become a medium-temperature and low-pressure liquid. The very fine mist droplets formed after throttling and depressurization are sprayed into the water evaporator W-EVA to complete vaporization and heat absorption, and the cold is absorbed by the water side circuit of the water evaporator W-EVA. The water outlet (i.e., the first output end) of the water evaporator W-EVA realizes the connection between the water side circuit of the water evaporator W-EVA and the air conditioning temperature control water circuit by controlling the first three-way valve and the first proportional three-way valve. Among them, the air conditioning temperature control water circuit realizes the adjustment of water flow by controlling the speed of the water pump, thereby controlling the temperature in the passenger compartment. In addition, the goal of the air conditioning temperature control water circuit needs to be achieved through the outlet refrigerant PT sensor of the water evaporator combined with the adjustment of the compressor speed.

[0077] For the output end of the water condenser (i.e., the second output end), the water side circuit of the water condenser realizes the water connection of the water condenser with the electric drive temperature control water circuit and the three-in-one heat exchanger HX_Rad for heat exchange of the refrigerant circuit through the second three-way valve. The water flow rate is regulated by the speed control of the water pump. The three-in-one heat exchanger HX_Rad is connected in series with the radiator water circuit through the control of the three-way valve, that is, the water condenser transfers the heat to the radiator, and finally exchanges the heat to the outside air through the forced convection of the front fan Rad.

[0078] See also Figure 4 , Figure 4 A circuit diagram of a thermal management system using another embodiment of the present application is schematically shown. The diagram shows that the first output end is connected to the second temperature control circuit (also referred to as the electric drive temperature control water circuit), and the second output end is connected to the first temperature control water circuit through the second three-way valve, the second proportional three-way valve and the first heat exchanger.

[0079] Specifically, when the controller receives a passenger compartment heating signal from the air-conditioning system, the compressor compresses the low-temperature and low-pressure gaseous refrigerant from the water evaporator into a high-temperature and high-pressure refrigerant gas, and arranges a gas-liquid separator at the compressor inlet. The high-temperature and high-pressure refrigerant gas then passes through the water condenser to complete liquefaction and heat release. The heat is absorbed by the water side of the water condenser, and the refrigerant phase changes and releases heat to become a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid is refrigerated and then throttled and reduced in pressure by the electronic expansion valve to become a medium-temperature and low-pressure liquid. The very fine mist droplets formed after throttling and pressure reduction are sprayed into the water evaporator to complete vaporization and heat absorption. The heat source of the water evaporator is the heat of the electric drive system absorbed by the water side circuit.

[0080] The water outlet of the water evaporator is connected in series with the water circuit of the water evaporator and the water circuit of the three-in-one heat exchanger HX_Rad by controlling the three-way valve. The water flow is regulated by the electronic water pump in front of the water evaporator. At the same time, the water temperature sensor after the water evaporator can realize accurate control of the water temperature. The three-in-one heat exchanger HX_Rad is connected to the electric drive water circuit. This working condition is a large series mode, that is, the three-way valve after HX_Rad is used to realize HX_Rad-DC front water pump-DC-PDU-Moter-bypass circuit-three-way valve-HX_Rad front water pump-HX_Rad, and the heating needs of the passenger compartment are met by the waste heat of the electric drive water circuit and the self-heating mode of the motor.

[0081] For the output end of the water condenser (i.e., the second output end), the water side circuit of the water condenser realizes the series connection between the water condenser water circuit and the HX_HVAC water circuit by controlling the three-way valve and the proportional three-way valve, and the water flow rate is regulated by the water pump in front of the water condenser. The air conditioning temperature control water circuit realizes the regulation of water flow rate by controlling the speed of the water pump, and realizes the target regulation of the heating comfort of the passenger compartment by controlling the target water temperature. The target of the air conditioning temperature control water circuit needs to be achieved through the outlet refrigerant PT sensor of the water evaporator combined with the adjustment of the compressor speed.

[0082] See also Figure 5 , Figure 5 A circuit diagram of a thermal management system using another embodiment of the present application is schematically shown. The diagram shows that the first output end is connected to the circuit where the battery is located in the first temperature control circuit (i.e., the battery temperature control water circuit) through the first three-way valve, and the second output end is connected to the second temperature control circuit (also referred to as the electric drive temperature control water circuit) through the second three-way valve and the second heat exchanger.

[0083] Specifically, when the controller receives a signal that the battery pack needs to be cooled, a gas-liquid separator is arranged at the compressor inlet, and the compressor compresses the low-temperature and low-pressure gaseous refrigerant from the water evaporator into a high-temperature and high-pressure refrigerant gas. The high-temperature and high-pressure refrigerant gas then passes through the water condenser to complete liquefaction and heat release. The heat is absorbed by the water side of the water condenser, and the refrigerant phase changes and releases heat to become a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid is refrigerated and then throttled and reduced in pressure by the electronic expansion valve to become a medium-temperature and low-pressure liquid. The very fine mist droplets formed after throttling and reducing pressure are sprayed into the water evaporator to complete vaporization and heat absorption. The cold is absorbed by the water side circuit of the water evaporator. The outlet of the water evaporator water circuit is connected to the battery temperature control water circuit by controlling the three-way valve and the proportional three-way valve. The battery temperature control water circuit adjusts the water flow rate by controlling the speed of the water pump, and the target adjustment of the battery pack temperature control is achieved by controlling the target water temperature. The target of the battery temperature control water circuit needs to be achieved through the outlet refrigerant PT sensor of the water evaporator combined with the adjustment of the compressor speed.

[0084] For the output end of the water condenser (i.e., the second output end), the water side circuit of the water condenser realizes the water connection of the water condenser with the three-in-one heat exchanger HX_Rad for heat exchange between the water condenser and the electric drive temperature control water circuit and the refrigerant circuit through a three-way valve, and the water flow is regulated by the speed control of the water pump. The three-in-one heat exchanger HX_Rad is controlled by the three-way valve to be connected in series with the radiator water circuit, that is, the water condenser transfers the heat to the radiator, and finally exchanges the heat to the outside air through the forced convection of the front-end fan.

[0085] See also Figure 6 , Figure 6 The circuit diagram of the thermal management system of another embodiment of the present application is schematically shown. When the controller receives a signal that the battery needs to heat, the electric compressor compresses the low-temperature and low-pressure gaseous refrigerant from the water evaporator into a high-temperature and high-pressure refrigerant gas, and arranges a gas-liquid separator at the compressor inlet. The high-temperature and high-pressure refrigerant gas then passes through the water condenser to complete liquefaction and heat release. The heat is absorbed by the water side of the water condenser, and the refrigerant phase changes and releases heat to become a medium-temperature and high-pressure liquid. The medium-temperature and high-pressure liquid is refrigerated and then throttled and depressurized by the electronic expansion valve to become a medium-temperature and low-pressure liquid. The very fine mist beads formed after throttling and depressurization are sprayed into the water evaporator to complete vaporization and heat absorption. The heat source of the water evaporator is the water side circuit absorbing the heat of the electric drive system. The water outlet of the water evaporator controls the three-way valve to realize the series connection of the water side circuit of the water evaporator and the water circuit of the three-in-one heat exchanger HX_Rad. The water flow is regulated by the electronic water pump in front of the water evaporator. At the same time, there is a water temperature sensor behind the water evaporator to realize accurate control of the water temperature. The three-in-one heat exchanger HX_Rad is connected to the electric drive water circuit. This working condition is a large series mode, that is, the three-way valve after HX_Rad is used to realize HX_Rad-DC front water pump-DC-PDU-Moter-bypass circuit-three-way valve-HX_Rad front water pump-HX_Rad, and the battery heating needs are met through the waste heat of the electric drive water circuit and the self-heating mode of the motor. The water side circuit of the water condenser realizes the series connection of the water condenser water circuit and the HX_Bat water circuit by controlling the three-way valve and the proportional three-way valve, and the water flow is adjusted by the water pump in front of the water condenser. The battery temperature control water circuit adjusts the water flow by controlling the speed of the water pump, and the target adjustment of battery heating is achieved by controlling the target water temperature. The target of the battery temperature control water circuit needs to be achieved through the outlet refrigerant PT sensor of the water evaporator combined with the adjustment of the compressor speed.

[0086] See also Figure 7 , Figure 7The circuit diagram of the thermal management system using another embodiment of the present application is schematically shown. When the controller receives a signal that the electric drive system needs cooling, the three-way valve behind the radiator is controlled to be in a large circulation mode according to the temperature of the water temperature sensor, and the electric drive water pump controls the water flow through the DC-PDU-motor drive through the PWM duty cycle, and then passes through the radiator and exchanges heat to the outside air through forced convection of the front-end fan, thereby realizing the cooling function of the electric drive system.

[0087] The specific details of the thermal management system control device provided in each embodiment of the present application have been described in detail in the corresponding method embodiments and will not be repeated here.

[0088] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the above-mentioned module, program segment or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flow chart, and the combination of the boxes in the block diagram or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0089] It should be noted that, although several modules or units of the equipment for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into being embodied by multiple modules or units.

[0090] Through the description of the above implementation methods, it is easy for those skilled in the art to understand that the example implementation methods described here can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the implementation methods of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the implementation methods of the present application.

[0091] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary technical means in the art that are not disclosed in the present application.

[0092] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A thermal management system, characterized in that: The thermal management system comprises: A refrigerant circuit includes a first output end and a second output end, wherein the first output end and the second output end output different amounts of heat; A heat exchange assembly, comprising a first heat exchanger and a second heat exchanger; A temperature control component, comprising a first temperature control loop and a second temperature control loop; In cooling mode, the first output end is connected to the first temperature control loop through the first heat exchanger, and the second output end is connected to the second temperature control loop through the second heat exchanger; In the heating mode, the first output end is connected to the second temperature control loop through the second heat exchanger, and the second output end is connected to the first temperature control loop through the first heat exchanger.

2. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a first three-way valve, wherein a first end of the first three-way valve is connected to the first output end, a second end of the first temperature control loop is connected to the first temperature control loop, and a third end of the first three-way valve is connected to the second temperature control loop; The first three-way valve is used to control the first output end to be connected to the first temperature control circuit, or the first output end to be connected to the second temperature control circuit.

3. The thermal management system according to claim 2, characterized in that: The thermal management system further comprises a first proportional three-way valve, the first temperature control loop comprises a first sub-temperature control loop and a second sub-temperature control loop; The first end of the first proportional three-way valve is connected to one end of the first three-way valve, the second end is connected to the first sub-temperature control loop, and the third end is connected to the second sub-temperature control loop.

4. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a second three-way valve, wherein a first end of the second three-way valve is connected to the second output end, a second end is connected to the first temperature control loop, and a third end is connected to the second temperature control loop; The second three-way valve is used to control the second output end to be connected to the first temperature control circuit, or the second output end to be connected to the second temperature control circuit.

5. The thermal management system according to claim 4, characterized in that: The thermal management system further comprises a second proportional three-way valve, the first temperature control loop comprises a first sub-temperature control loop and a second sub-temperature control loop; The first end of the second proportional three-way valve is connected to the second three-way valve, the second end is connected to the first sub-temperature control loop, and the third end is connected to the second sub-temperature control loop.

6. The thermal management system according to claim 1, characterized in that: The refrigerant circuit includes a water evaporator, a compressor and a water condenser, and the water evaporator, the compressor and the water condenser are connected in series in sequence to form a circulation circuit.

7. The thermal management system according to claim 1, characterized in that: The second temperature control circuit includes a radiator, and in a cooling state, the second heat exchanger is connected to the radiator.

8. The thermal management system according to claim 7, characterized in that: The second temperature control circuit includes a heating component, and the circuit where the heating component is located is connected in parallel with the circuit where the radiator is located; in the heating state, the second heat exchanger is connected to the heating component.

9. A thermal management system control method, characterized in that: Applied to the thermal management system according to any one of claims 1 to 8, the method comprises: If a cooling signal is received, the heat at the first output end is heat-exchanged with the first temperature control loop through the first heat exchanger to cool the first temperature control loop, and the heat at the second output end is heat-exchanged with the second temperature control loop through the second heat exchanger to dissipate heat; If a heating signal is received, the heat at the second output end is heat exchanged with the first temperature control loop through the first heat exchanger to heat the first temperature control loop, and the heat at the first output end is heat exchanged with the second temperature control loop through the second heat exchanger to heat.

10. A vehicle, characterized in that: Comprising a thermal management system as claimed in any one of claims 1 to 8.

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