A vehicle air conditioning control system, method, and vehicle

Abstract

This invention discloses a vehicle air conditioning control system, method, and vehicle. The system includes a heating circuit, an air conditioning circuit, and a pretreatment circuit. The heating circuit includes a heater core, a one-way valve, a heater, a first electronic water pump, and a first switching valve connected in sequence, with the heater core also connected to the first switching valve. The air conditioning circuit includes an evaporator, a compressor, a condenser, and a first expansion valve connected in sequence, with the evaporator also connected to the first expansion valve. The pretreatment circuit includes a second switching valve, a second expansion valve, and a combined heating and cooling heat exchanger. The heat source input of the combined heating and cooling heat exchanger is connected between the first electronic water pump and the first switching valve via the second switching valve. The cold source input of the combined heating and cooling heat exchanger is connected between the condenser and the heater core via the second expansion valve. The first output of the combined heating and cooling heat exchanger is located between the heater core and the one-way valve. This system improves the air conditioning's rapid response speed and environmental adaptability.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and more particularly to a vehicle air conditioning control system, method, and vehicle. Background Technology

[0002] To ensure the normal operation of electric vehicles and improve their driving range, thermal management is necessary. Currently, car air conditioning systems require a long wait to reach the desired temperature for heating or cooling. In extreme environments, insufficient air conditioning capacity may even prevent the system from reaching the expected temperature. These are current technical pain points in the industry. Summary of the Invention

[0003] This application provides a vehicle air conditioning control system, method, and vehicle. By adding a pre-processing loop including an integrated heat exchanger, it can be superimposed on its own air conditioning system to achieve a dual-layer processing effect, thereby improving the air conditioning's rapid response speed and environmental adaptability, and greatly enhancing the user experience.

[0004] In a first aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0005] A vehicle air conditioning control system includes: a heating circuit, an air conditioning circuit, and a pretreatment circuit; the heating circuit includes: a heating core, a one-way valve, a heater, a first electronic water pump, and a first switching valve connected in sequence, and the heating core is connected to the first switching valve; the air conditioning circuit includes: an evaporator, a compressor, a condenser, and a first expansion valve connected in sequence, and the evaporator is connected to the first expansion valve; the pretreatment circuit includes: a second switching valve, a second expansion valve, and a combined heat exchanger, wherein the heat source input end of the combined heat exchanger is connected between the first electronic water pump and the first switching valve via the second switching valve, the cold source input end of the combined heat exchanger is connected between the condenser and the first expansion valve via the second expansion valve, and the first output end of the combined heat exchanger is disposed between the heating core and the one-way valve.

[0006] Preferably, the integrated heat exchanger is installed at the inlet of the air conditioning intake duct.

[0007] Preferably, the heating circuit further includes a second electronic water pump and a waste heat recovery sub-circuit connected in series, and the second electronic water pump and the waste heat recovery sub-circuit connected in series are also connected in parallel with the one-way valve.

[0008] Preferably, the heating circuit further includes: a three-way proportional valve and a radiator; the input end of the three-way proportional valve is connected to the output end of the waste heat recovery sub-circuit, the first output end of the three-way proportional valve is connected to one end of the radiator, the second output end of the three-way proportional valve is connected to the heater, and the other end of the radiator is connected to the second output end of the integrated heating and cooling heat exchanger.

[0009] Preferably, the waste heat recovery sub-circuit includes an engine circuit and / or an electric drive circuit.

[0010] Secondly, through an embodiment of the present invention, the present invention provides the following technical solution:

[0011] A vehicle air conditioning control method is applied in the vehicle air conditioning control system described in any one of the first aspects above. The method includes: determining whether the vehicle meets the activation conditions of the thermal management mode; if the vehicle meets the activation conditions of the enhanced heating mode under the thermal management mode, then issuing a heater and a first electronic water pump activation signal, and controlling the first switch valve and a second switch valve to open.

[0012] Preferably, after the vehicle meets the activation conditions of the enhanced heating mode under the thermal management mode, the method further includes: determining whether the waste heat temperature of the waste heat recovery sub-circuit is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, then issuing a heater and first electronic water pump activation signal, and controlling the first switch valve and second switch valve to open.

[0013] Preferably, if the vehicle meets the conditions for activating the enhanced cooling mode under thermal management mode, the first expansion valve and the second expansion valve are controlled to open.

[0014] Preferably, if the vehicle meets the conditions for opening the evaporator defrosting mode under the thermal management mode, it is determined whether the waste heat temperature of the waste heat recovery sub-circuit is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, a heater and the first electronic water pump are turned on, and the second switch valve is controlled to open.

[0015] Thirdly, through one embodiment of the present invention, the following technical solution is provided:

[0016] A vehicle includes: a vehicle body and a vehicle air conditioning control system as described in any of the first aspects above.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0018] The vehicle air conditioning control system provided in this invention includes a pre-processing circuit. This circuit, which includes an integrated heat exchanger, is coupled with the heating circuit and the air conditioning circuit. The heat source input of the integrated heat exchanger is connected between the first electronic water pump and the first switching valve via a second switching valve. The cold source input of the integrated heat exchanger is connected between the condenser and the first expansion valve via a second expansion valve. Opening the first and second switching valves enables simultaneous heating, and opening the first and second expansion valves enables simultaneous cooling. In extreme environments or when rapid heating / cooling is required, the pre-processing circuit can process the air conditioning system simultaneously with the heating circuit or the air conditioning circuit. After this double-layer processing, the heat exchange capability under external circulation conditions is enhanced, improving rapid response and environmental adaptability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an air conditioning control system provided in an embodiment of the present invention;

[0021] Figure 2 A flowchart of an air conditioning control method provided in an embodiment of the present invention;

[0022] Figure 3 This is a structural schematic diagram of a vehicle provided in an embodiment of the present invention.

[0023] Figure label:

[0024] 101. Heater core; 102. One-way valve; 103. Heater; 104. Evaporator; 105. Compressor; 106. Condenser; 107. Integrated heat exchanger; 108. Waste heat recovery sub-loop; 109. Radiator. Detailed Implementation

[0025] This application provides a vehicle air conditioning control system, method, and vehicle. By adding a pre-processing loop including an integrated heat exchanger, it can be superimposed on its own air conditioning system to achieve a dual-layer processing effect, thereby improving the air conditioning's rapid response speed and environmental adaptability, providing enhanced air conditioning functionality, and greatly improving the user experience.

[0026] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0027] A vehicle air conditioning control system includes: a heating circuit, an air conditioning circuit, and a pre-treatment circuit; the heating circuit includes: a heating core, a one-way valve, a heater, a first electronic water pump, and a first switching valve connected in sequence, and the heating core is connected to the first switching valve; the air conditioning circuit includes: an evaporator, a compressor, a condenser, and a first expansion valve connected in sequence, and the evaporator is connected to the first expansion valve; the pre-treatment circuit includes: a second switching valve, a second expansion valve, and a combined heat exchanger, the heat source input end of the combined heat exchanger is connected between the first electronic water pump and the first switching valve through the second switching valve, the cold source input end of the combined heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve, and the first output end of the combined heat exchanger is disposed between the heating core and the one-way valve.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] In a first aspect, the vehicle air conditioning control system provided by the embodiments of the present invention specifically includes: a heating circuit, an air conditioning circuit, and a pre-processing circuit;

[0030] like Figure 1 As shown, the heating circuit includes: a heating core 101, a one-way valve 102, a heater 103, a first electronic water pump B1, and a first switching valve K1 connected in sequence, and the heating core 101 is also connected to the first switching valve K1; the air conditioning circuit includes: an evaporator 104, a compressor 105, a condenser 106, and a first expansion valve P1 connected in sequence, and the evaporator 104 is also connected to the first expansion valve P1;

[0031] The pretreatment circuit includes: a second switching valve K2, a second expansion valve P2, and a combined heat exchanger 107. The heat source input end of the combined heat exchanger 107 is connected between the first electronic water pump B1 and the first switching valve K1 via the second switching valve K2. The cold source input end of the combined heat exchanger 107 is connected between the condenser 106 and the first expansion valve P1 via the second expansion valve P2. The first output end of the combined heat exchanger 107 is located between the warm air core 101 and the one-way valve 102.

[0032] The integrated heat exchanger 107 can be installed at the inlet of the air conditioning duct. By installing the integrated heat exchanger 107 at the inlet of the air conditioning duct, the integrated heat exchanger 107 uses a material with a high heat transfer coefficient, usually aluminum or copper, and has a tube-and-fin or finned structure, allowing airflow to pass through smoothly.

[0033] Optionally, the heater 103 can be a PTC (Positive Temperature Coefficient) heater. The evaporator 104 and the heater core 101 are both housed within the air conditioning unit.

[0034] In a specific embodiment, such as Figure 1 As shown, the heating circuit includes a heating core 101, a one-way valve 102, a heater 103, a first electronic water pump B1, and a first switching valve K1 connected in sequence, such that the output end of the heating core 101 is connected to the input end of the one-way valve 102, the output end of the one-way valve 102 is connected to the input end of the heater 103, the output end of the heater 103 is connected to one end of the first electronic water pump B1, the other end of the first electronic water pump B1 is connected to one end of the first switching valve K1, and the other end of the first switching valve K1 is connected to the input end of the heating core 101.

[0035] The air conditioning circuit includes an evaporator 104, a compressor 105, a condenser 106, and a first expansion valve P1 connected in sequence, such that the output end of the evaporator 104 is connected to the input end of the compressor 105, the output end of the compressor 105 is connected to the input end of the condenser 106, the output end of the condenser 106 is connected to one end of the first expansion valve P1, and the other end of the first expansion valve P1 is connected to the input end of the evaporator 104.

[0036] A pressure and temperature sensor (PT) is installed between the evaporator 104 and the compressor 105, and a high pressure sensor (HP) is installed between the condenser 106 and the first expansion valve P1. The PT and HP are used to monitor the pressure and temperature of the circuit in real time.

[0037] Furthermore, in order to achieve the goal of energy conservation, such as Figure 1 As shown, the heating circuit may further include: a second electronic water pump B2 connected in series and a waste heat recovery sub-circuit 108, which are also connected in parallel with a one-way valve 102. This connects the input of the second electronic water pump B2 to the output of the heating core 101, the output of the second electronic water pump B2 to the input of the waste heat recovery sub-circuit 108, and the output of the waste heat recovery sub-circuit 108 to the input of the heater 103.

[0038] In a specific embodiment, the waste heat recovery sub-circuit 108 may include an engine circuit and / or an electric drive circuit. This enables the system to recover and utilize waste heat, reducing overall vehicle energy consumption and increasing driving range.

[0039] Furthermore, in order to enhance the working efficiency of the air conditioning control system, such as Figure 1As shown, the heating circuit may also include: a three-way proportional valve SF and a radiator 109; the input end of the three-way proportional valve SF is connected to the output end of the waste heat recovery sub-circuit 108, the first output end of the three-way proportional valve SF is connected to one end of the radiator 109, the second output end of the three-way proportional valve SF is connected to the heater 103, and the other end of the radiator 109 is connected to the second output end of the integrated heat exchanger 107.

[0040] Alternatively, the heatsink 109 can be a fan.

[0041] To facilitate understanding, the working process of the air conditioning control system proposed in this application is described below with specific examples:

[0042] It should be noted that in the initial state of the three-way proportional valve SF, the first input terminal is connected to the first output terminal. After the three-way proportional valve SF is opened, the first input terminal is connected to the first output terminal (1-2) and the first input terminal is connected to the second output terminal (1-3) at the same time. All switching valves and expansion valves are initially in the closed state.

[0043] First, determine whether the vehicle meets the conditions for activating the thermal management mode. This determination may include: whether the vehicle has received a thermal management command, and whether the ambient temperature is within a preset temperature range. If it is determined that the vehicle has received a thermal management command, or that the ambient temperature is greater than or equal to a preset maximum temperature, or that the ambient temperature is less than a preset minimum temperature, then the vehicle meets the conditions for activating the thermal management mode.

[0044] Optionally, thermal management commands may include cooling commands, heating commands, enhanced cooling commands, and enhanced heating commands. For example, thermal management commands may be initiated by the user or sent by the vehicle controller to the air conditioning control system. Thermal management modes may include heating mode, enhanced heating mode, cooling mode, and enhanced cooling mode, etc.

[0045] In a specific embodiment, if a cooling command is received, the cooling mode is executed; if a heating command is received, the heating mode is executed; if an enhanced cooling command is received or it is determined that the ambient temperature of the vehicle is greater than or equal to the preset maximum temperature, the enhanced cooling mode is executed; if an enhanced heating command is received or it is determined that the ambient temperature of the vehicle is less than the preset minimum temperature, the enhanced heating mode is executed.

[0046] The preset maximum temperature and preset minimum temperature can be set according to actual needs, and this application does not impose any restrictions.

[0047] In a specific embodiment, if the vehicle meets the conditions for activating the enhanced heating mode under the thermal management mode, a signal is sent to activate the heater 103 and the first electronic water pump B1, and the first switching valve K1 and the second switching valve K2 are controlled to open.

[0048] Furthermore, in order to effectively utilize the waste heat of the engine circuit or electric drive circuit, after the vehicle meets the conditions for opening the enhanced heating mode under the thermal management mode, it may also include: determining whether the waste heat temperature of the waste heat recovery sub-circuit 108 is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, then issuing a signal to open the heater 103 and the first electronic water pump B1, and controlling the first switching valve K1 and the second switching valve K2 to open.

[0049] like Figure 1 As shown, the system also includes a thermometer T, installed on the waste heat recovery sub-loop 108, for real-time acquisition of waste heat temperature values. The preset target temperature can be set according to actual needs, and this application does not impose any limitations on it.

[0050] Specifically, in extreme environments or when rapid heating is required, the enhanced heating mode needs to be activated. When there is no residual heat in the engine circuit or electric drive circuit, the PTC heater operates, and both the first switch valve K1 and the second switch valve K2 are opened. The first electronic water pump B1 is activated, and the coolant flows through the PTC heater, the first electronic water pump B1, the first switch valve K1, the heater core 101, and the one-way valve 102, and then back to the PTC heater. The coolant also flows through the PTC heater, the first electronic water pump B1, the second switch valve K2, the integrated heat exchanger 107, and the one-way valve 102, and then back to the PTC heater. These two loops circulate to meet the enhanced heating demand.

[0051] In extreme environments or when rapid heating is required, the enhanced heating mode needs to be activated. When there is residual heat in the engine circuit or electric drive circuit, the three-way proportional valve SF opens according to the command, and 1-2 and 1-3 of the three-way proportional valve SF are connected. The PTC heater is not working, and both the first switch valve K1 and the second switch valve K2 are open. The second electronic water pump B2 is turned on, and the first electronic water pump B1 is turned off. The coolant flows through the engine circuit or electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the first switch valve K1, the heater core 101, and the second electronic water pump B2, and then back to the engine circuit or electric drive circuit. The coolant also flows through the engine circuit or electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the second switch valve K2, the integrated heat exchanger 107, and the second electronic water pump B2, and then back to the engine circuit or electric drive circuit. The two circuits circulate to achieve waste heat recovery and enhance heating demand.

[0052] It should be noted that the opening ratio of the three-way proportional valve SF is related to the temperature required for cooling or heating. If the difference between the required heating or cooling temperature and the ambient temperature is large, the opening ratio of the three-way proportional valve SF will also be large. Turning off the first electronic water pump B1 is to avoid wasting energy.

[0053] Determine whether the waste heat temperature of the waste heat recovery sub-circuit 108 is greater than or equal to the preset target temperature; if the waste heat temperature is greater than or equal to the preset target temperature, issue a second water pump start signal and control the three-way proportional valve SF, the first switching valve K1 and the second switching valve K2 to open.

[0054] Specifically, in extreme environments or when rapid heating is required, the enhanced heating mode needs to be activated. When there is residual heat in the engine circuit or electric drive circuit, the three-way proportional valve SF opens according to the command, connecting 1-2 and 1-3. The PTC heater is not working, and both the first switch valve K1 and the second switch valve K2 are open. The second electronic water pump B2 is activated, and the first electronic water pump B1 is closed. The coolant flows through the engine circuit or electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the first switch valve K1, the heater core 101, and the second electronic water pump B2, and then back to the engine circuit or electric drive circuit. The coolant also flows through the engine circuit or electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the second switch valve K2, the integrated heat exchanger 107, and the second electronic water pump B2, and then back to the engine circuit or electric drive circuit. The two circuits circulate to achieve waste heat recovery and enhance heating demand.

[0055] Upon receiving a heating command, the heating mode is executed, including determining whether the waste heat temperature of the waste heat recovery sub-circuit 108 is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, the heater 103 and the first electronic water pump B1 are activated, and the first switching valve K1 is controlled to open.

[0056] If the residual heat temperature is greater than or equal to the preset target temperature, a signal to start the second electronic water pump B2 is sent, and the first switch valve K1 is opened.

[0057] Specifically, when there is no residual heat in the engine circuit or electric drive circuit, the PTC heater works, the first electronic water pump B1 is turned on, the first switching valve K1 is opened, and the coolant circulates through the PTC heater, the first electronic water pump B1, the first switching valve K1, the heater core 101, the one-way valve 102, and the PTC heater to meet the heating needs.

[0058] When there is residual heat in the engine circuit or electric drive circuit, the three-way proportional valve SF opens according to the command, connecting 1-2 and 1-3. The PTC heater is not working, the second electronic water pump B2 is turned on, the first electronic water pump B1 is turned off, and the first switch valve K1 is turned on. The coolant flows through the engine or electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the first switch valve K1, the heater core 101, and the second electronic water pump B2, and then back to the engine or electric drive circuit to achieve waste heat recovery and heating needs.

[0059] The activation level of the heat sink can be determined according to the thermal management mode. For example, in enhanced heating mode, the activation level of the heat sink is higher; in heating mode, the activation level of the heat sink is lower. The heat sink in this application is controlled by PWM (Pulse Width Modulation) by default and is initially in the on state.

[0060] Upon receiving a cooling command, the cooling mode is executed, including issuing a signal to start the compressor 105 and controlling the first expansion valve P1 to open.

[0061] Specifically, under normal circumstances, the compressor 105 is started and the first expansion valve P1 is opened. The refrigerant absorbs heat through the evaporator 104. The coolant passes through the compressor 105, condenser 106, first expansion valve P1, evaporator 104, and then returns to the compressor 105 to complete the cycle and achieve the normal refrigeration function.

[0062] If the vehicle meets the conditions for activating the enhanced cooling mode under thermal management mode, that is, if it receives an enhanced cooling command or determines that the ambient temperature of the vehicle is greater than or equal to the preset maximum temperature, then the first expansion valve P1 and the second expansion valve P2 are controlled to open.

[0063] Specifically, in extreme environments or when there is a need for rapid cooling, the first expansion valve P1 and the second expansion valve P2 can be opened simultaneously. The refrigerant absorbs heat through the integrated heat exchanger 107 and the evaporator 104. The coolant passes through the compressor 105, condenser 106, first expansion valve P1, evaporator 104, and then returns to the compressor 105. Additionally, the coolant passes through the compressor 105, condenser 106, second expansion valve P2, integrated heat exchanger 107, and then returns to the compressor 105, thus achieving an enhanced cooling mode.

[0064] Furthermore, the thermal management mode may also include an evaporator defrosting mode. To determine whether the vehicle meets the activation conditions of the thermal management mode, it may also include: determining whether the temperature of the vehicle's evaporator coil is continuously lower than a specified temperature for a certain period of time. If so, the vehicle meets the activation conditions of the evaporator defrosting mode under the thermal management mode.

[0065] If the vehicle meets the conditions for opening the evaporator defrosting mode under the thermal management mode, it is determined whether the waste heat temperature of the waste heat recovery sub-circuit 108 is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, the heater 103 and the first electronic water pump B1 are activated, and the second switch valve K2 is controlled to open.

[0066] If the residual heat temperature is greater than or equal to the preset target temperature, a signal to start the second electronic water pump B2 is sent, and the three-way proportional valve SF and the second switching valve K2 are controlled to open.

[0067] Specifically, in evaporator defrosting mode, when there is no residual heat available in the engine or electric drive circuit, and the passenger compartment has a cooling demand while the evaporator 104 reaches the frosting threshold, the second switch valve K2 is opened, the first electronic water pump B1 is turned on, and the PTC heater is turned on. The coolant flows through the integrated heat exchanger 107, and the air intake can quickly raise the surface temperature of the evaporator 104, thus relieving the frosting state. That is, the coolant passes through the PTC heater, the first electronic water pump B1, the second switch valve K2, the integrated heat exchanger 107, and the one-way valve 102, and then returns to the PTC heater, avoiding compressor 105 shutdown protection and improving user experience.

[0068] It should be noted that the coolant flows through the integrated heat exchanger 107, and the intake air can quickly increase the surface temperature of the evaporator 104 by changing the ambient temperature.

[0069] In evaporator defrosting mode, when there is residual heat available in the engine or electric drive circuit, and the passenger compartment has a cooling demand while the evaporator 104 reaches the frosting threshold, the three-way proportional valve SF opens according to the command, connecting 1-2 and 1-3, opening the second switch valve K2, and opening the second electronic water pump B2. The coolant flows through the integrated heat exchanger 107, and the intake air can quickly raise the surface temperature of the evaporator 104, thus relieving the frosting state. That is, the coolant passes through the engine or electric drive circuit, the three-way proportional valve SF, the first electronic water pump B1, the second switch valve K2, the integrated heat exchanger 107, and the second electronic water pump B2, and then returns to the engine or electric drive circuit, thereby avoiding compressor 105 shutdown protection and improving user experience.

[0070] Table 1 below summarizes the opening status of the three-way proportional valve SF, PTC heater, first electronic water pump B1, second electronic water pump B2, first switching valve K1, second switching valve K2, compressor 105, first expansion valve P1, and second expansion valve P2:

[0071] Table 1

[0072]

[0073] This system pre-treats the incoming air to enhance the heat exchange capability of the vehicle's air conditioning system under external circulation conditions, improving its rapid response and environmental adaptability. Simultaneously, the system enables waste heat recovery and utilization, reducing overall vehicle energy consumption and increasing driving range. Beneficial effects: 1. By adding a combined heat exchanger to the vehicle's external air intake duct, the incoming air to the air conditioning system can be preheated or pre-cooled. 2. The pre-treated air re-enters the air conditioning unit, a dual-layer treatment mode that improves the air conditioning's rapid response speed and environmental adaptability.

[0074] In summary, this invention provides a vehicle air conditioning control system. By installing an integrated heat exchanger at the air conditioning intake duct inlet, coupled with the heating and air conditioning circuits, the system can pre-process the intake air temperature, enhancing the heat exchange capability of the air conditioning system under external circulation conditions. This improves rapid response and environmental adaptability, providing enhanced air conditioning functionality and significantly improving the user experience. Simultaneously, the system can recover and utilize waste heat, reducing overall vehicle energy consumption and increasing driving range.

[0075] Secondly, based on the same inventive concept, such as Figure 2 As shown, this embodiment of the invention provides a vehicle air conditioning control method, applied to the vehicle air conditioning control system described in any one of the first aspects above. The method includes the following steps S101 to S102:

[0076] Step S101: Determine whether the vehicle meets the conditions for activating the thermal management mode;

[0077] In step S102, if the vehicle meets the conditions for activating the enhanced heating mode under the thermal management mode, a signal is sent to activate the heater and the first electronic water pump, and the first and second switching valves are controlled to open.

[0078] As an optional embodiment, after the vehicle meets the activation conditions of the enhanced heating mode under the thermal management mode, the method further includes: determining whether the waste heat temperature of the waste heat recovery sub-circuit is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, issuing a heater and first electronic water pump activation signal, and controlling the first switch valve and second switch valve to open.

[0079] As an optional embodiment, if the vehicle meets the activation conditions for the enhanced cooling mode under thermal management mode, the first expansion valve and the second expansion valve are controlled to open.

[0080] As an optional embodiment, if the vehicle meets the conditions for opening the evaporator defrosting mode under the thermal management mode, it is determined whether the waste heat temperature of the waste heat recovery sub-circuit is greater than or equal to the preset target temperature; if the waste heat temperature is less than the preset target temperature, a heater and the first electronic water pump are turned on, and the second switch valve is controlled to open.

[0081] The vehicle air conditioning control method provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned system embodiment. For the sake of brevity, any parts not mentioned in the method embodiment can be referred to the corresponding content in the aforementioned system embodiment.

[0082] Fourthly, based on the same inventive concept, this embodiment provides a vehicle 500, such as... Figure 3 As shown, it includes a vehicle body 501 and a vehicle air conditioning control system 502 installed in the vehicle body as described in the first aspect above.

[0083] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0084] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0085] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A module that specifies the function in one or more boxes.

[0086] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction modules implemented in a process. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0087] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0088] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0089] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A vehicle air conditioning control system, characterized in that, include: Heating circuit, air conditioning circuit, and pretreatment circuit; The heating circuit includes: a heating core, a one-way valve, a heater, a first electronic water pump, and a first switching valve connected in sequence, and the heating core is also connected to the first switching valve; The air conditioning circuit includes: an evaporator, a compressor, a condenser, and a first expansion valve connected in sequence, and the evaporator is also connected to the first expansion valve; The pretreatment circuit includes: a second switching valve, a second expansion valve, and a combined heating and cooling heat exchanger. The heat source input end of the combined heating and cooling heat exchanger is connected between the first electronic water pump and the first switching valve through the second switching valve. The cold source input end of the combined heating and cooling heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve. The first output end of the combined heating and cooling heat exchanger is located between the warm air core and the one-way valve.

2. The system as described in claim 1, characterized in that, The integrated heat exchanger is installed at the inlet of the air conditioning duct.

3. The system as described in claim 1, characterized in that, The heating circuit also includes a second electronic water pump connected in series and a waste heat recovery sub-circuit, which are also connected in parallel with the one-way valve.

4. The system as described in claim 3, characterized in that, The heating circuit also includes: a three-way proportional valve and a radiator; The input end of the three-way proportional valve is connected to the output end of the waste heat recovery sub-circuit, the first output end of the three-way proportional valve is connected to one end of the radiator, the second output end of the three-way proportional valve is connected to the heater, and the other end of the radiator is connected to the second output end of the integrated heat exchanger.

5. The system as described in claim 3, characterized in that, The waste heat recovery sub-circuit includes an engine circuit and / or an electric drive circuit.

6. A vehicle air conditioning control method, characterized in that, The method is implemented by using a vehicle air conditioning control system as described in any one of claims 3-5, and includes: Determine whether the vehicle meets the conditions for activating thermal management mode; If the vehicle meets the activation conditions for the enhanced heating mode under thermal management mode, a signal is sent to activate the heater and the first electronic water pump, and the first and second switching valves are controlled to open.

7. The method as described in claim 6, characterized in that, After the vehicle meets the conditions for activating the enhanced heating mode under thermal management mode, it also includes: Determine whether the waste heat temperature of the waste heat recovery sub-loop is greater than or equal to the preset target temperature; If the residual heat temperature is lower than the preset target temperature, a signal is sent to turn on the heater and the first electronic water pump, and the first and second switching valves are controlled to open.

8. The method as described in claim 7, characterized in that, If the vehicle meets the conditions for activating the enhanced cooling mode under thermal management mode, then the first expansion valve and the second expansion valve are controlled to open.

9. The method as described in claim 6, characterized in that, If the vehicle meets the conditions for opening the evaporator defrosting mode under the thermal management mode, then determine whether the waste heat temperature of the waste heat recovery sub-loop is greater than or equal to the preset target temperature. If the residual heat temperature is lower than the preset target temperature, a signal is sent to turn on the heater and the first electronic water pump, and the second switch valve is controlled to open.

10. A vehicle, characterized in that, include: The vehicle body and the vehicle air conditioning control system as described in any one of claims 1-5.

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