Vehicle air conditioner control system and method and vehicle

Abstract

The invention discloses a vehicle air conditioner control system and method and a vehicle. The system comprises a warm air loop, an air conditioner loop and a pretreatment loop. The warm air loop comprises a warm air core body, a one-way valve, a heater, a first electronic water pump and a first switch valve which are connected in sequence, and the warm air core body is further connected with the first switch valve; the air conditioner loop comprises an evaporator, a compressor, a condenser and a first expansion valve which are connected in sequence, and the evaporator is further connected with the first expansion valve; the pretreatment loop comprises a second switch valve, a second expansion valve and a cold and heat integrated heat exchanger, the heat source input end of the cold and heat integrated heat exchanger is connected between the first electronic water pump and the first switch valve through the second switch valve, and the cold source input end of the cold and heat integrated heat exchanger is connected between the condenser and the warm air core through the second expansion valve. The first output end of the cold and heat integrated heat exchanger is arranged between the warm air core body and the one-way valve. According to the system, the quick response speed and the environment-resistant adaptive capacity of the air conditioner are improved.

Description

Technical Field

[0001] The present invention relates to the field of thermal management technology, and in particular to a vehicle air-conditioning control system, method and vehicle. Background Art

[0002] In order to ensure the normal operation of electric vehicles and improve the driving range, electric vehicles need to be thermally managed. At the current stage, it takes a long time for the car air conditioning to reach the expected temperature for heating or cooling. In extreme environments, due to insufficient air conditioning capacity, it may even fail to achieve the expected goal. These are the technical pain points of the current industry. Summary of the invention

[0003] The embodiments of the present application provide a vehicle air-conditioning control system, method and vehicle. By adding a pre-processing circuit including a cold and hot integrated heat exchanger, it can be superimposed with its own air-conditioning system to achieve a double-layer processing effect, thereby improving the rapid response speed and environmental adaptability of the air-conditioning, and greatly improving 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, comprising: a warm air circuit, an air-conditioning circuit and a pre-treatment circuit; the warm air circuit comprises: a warm air core, a one-way valve, a heater, a first electronic water pump and a first switch valve connected in sequence, and the warm air core is connected to the first switch valve; the air-conditioning circuit comprises: 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 comprises: a second switch valve, a second expansion valve and a cold-hot integrated heat exchanger, the heat source input end of the cold-hot integrated heat exchanger is connected between the first electronic water pump and the first switch valve through the second switch valve, the cold source input end of the cold-hot integrated heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve, and the first output end of the cold-hot integrated heat exchanger is arranged between the warm air core and the one-way valve.

[0006] Preferably, the integrated cold and hot heat exchanger is arranged at the entrance of the air inlet external air duct of the air conditioner.

[0007] Preferably, the warm air circuit further comprises: 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 warm air 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 cold and hot heat exchanger.

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

[0010] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0011] A vehicle air-conditioning control method is applied to the vehicle air-conditioning control system described in any one of the first aspects above, the method comprising: determining whether the vehicle meets the start-up conditions of a thermal management mode; if the vehicle meets the start-up conditions of an enhanced heating mode under the thermal management mode, a heater and a first electronic water pump start-up signal is issued, and a first switch valve and a second switch valve are controlled to open.

[0012] Preferably, after the vehicle meets the activation conditions of the enhanced heating mode in the thermal management mode, it also 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 lower than the preset target temperature, a heater and a first electronic water pump activation signal is issued, and the first switch valve and the second switch valve are controlled to open.

[0013] Preferably, if the vehicle meets the start-up conditions of the enhanced cooling mode in the thermal management mode, the first expansion valve and the second expansion valve are controlled to open.

[0014] Preferably, if the vehicle meets the activation conditions of the evaporator defrost mode in 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 lower than the preset target temperature, a heater and a first electronic water pump start signal is issued, and the second switch valve is controlled to open.

[0015] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

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

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

[0018] The vehicle air-conditioning control system provided in the embodiment of the present invention adds a pre-processing circuit, so that the pre-processing circuit including the integrated cold and hot heat exchanger is coupled with the warm air circuit and the air-conditioning circuit, the heat source input end of the integrated cold and hot heat exchanger is connected between the first electronic water pump and the first switch valve through the second switch valve, and the cold source input end of the integrated cold and hot heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve. The first switch valve and the second switch valve can be opened to achieve simultaneous heating, and the first expansion valve and the second expansion valve can be opened to achieve simultaneous heating. In extreme environments or when rapid heating / cooling is required, the pre-processing circuit can be processed simultaneously with the warm air circuit or the air-conditioning circuit. After double-layer processing, the thermal interaction capability of the air-conditioning system under the external circulation condition is enhanced, and the rapid responsiveness and environmental adaptability are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the structure of an air conditioning control system provided by an embodiment of the present invention;

[0021] Figure 2 A flow chart of an air conditioning control method provided by an embodiment of the present invention;

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

[0023] Reference numerals:

[0024] Warm air core 101; one-way valve 102, heater 103, evaporator 104; compressor 105; condenser 106; cold and hot integrated heat exchanger 107; waste heat recovery sub-circuit 108; radiator 109. DETAILED DESCRIPTION

[0025] The embodiments of the present application provide a vehicle air-conditioning control system, method and vehicle. By adding a pre-treatment circuit including a cold and hot integrated heat exchanger, it can be superimposed with its own air-conditioning system to achieve a double-layer processing effect, thereby improving the rapid response speed and environmental adaptability of the air-conditioning, having an air-conditioning enhancement function, and greatly improving the user experience.

[0026] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0027] A vehicle air-conditioning control system comprises: a warm air circuit, an air-conditioning circuit and a pre-treatment circuit; the warm air circuit comprises: a warm air core, a one-way valve, a heater, a first electronic water pump and a first switch valve which are connected in sequence, and the warm air core is connected to the first switch valve; the air-conditioning circuit comprises: an evaporator, a compressor, a condenser and a first expansion valve which are connected in sequence, and the evaporator is connected to the first expansion valve; the pre-treatment circuit comprises: a second switch valve, a second expansion valve and a cold-hot integrated heat exchanger, the heat source input end of the cold-hot integrated heat exchanger is connected between the first electronic water pump and the first switch valve through the second switch valve, the cold source input end of the cold-hot integrated heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve, and the first output end of the cold-hot integrated heat exchanger is arranged between the warm air core and the one-way valve.

[0028] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

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

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

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

[0032] The integrated heat exchanger 107 can be arranged at the entrance of the air inlet duct of the air conditioner. The integrated heat exchanger 107 is installed at the entrance of the air inlet duct of the air conditioner. The integrated heat exchanger 107 is made of a material with a high heat transfer coefficient, usually aluminum or copper, and has a tube-belt or fin structure, so that airflow can pass smoothly.

[0033] Optionally, the heater 103 may be a PTC (Positive Temperature Coefficient) heater. The evaporator 104 and the warm air core 101 are both disposed in the air conditioner housing.

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

[0035] The air conditioning circuit includes an evaporator 104, a compressor 105, a condenser 106 and a first expansion valve P1 which are connected in sequence, so 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 temperature sensor (PT) is provided between the evaporator 104 and the compressor 105, and a high pressure sensor (HP) is provided 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 purpose of energy saving, Figure 1 As shown, the warm air circuit may further include: a second electronic water pump B2 and a waste heat recovery sub-circuit 108 connected in series, and the second electronic water pump B2 and the waste heat recovery sub-circuit 108 connected in series are also connected in parallel with the one-way valve 102. The input end of the second electronic water pump B2 is connected to the output end of the warm air core 101, the output end of the second electronic water pump B2 is connected to the input end of the waste heat recovery sub-circuit 108, and the output end of the waste heat recovery sub-circuit 108 is connected to the input end 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, so that the system can realize waste heat recovery and utilization, reduce vehicle energy consumption, and increase driving range.

[0039] Furthermore, in order to enhance the working efficiency of the air conditioning control system, as Figure 1As shown, the warm air circuit can 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 hot and cold heat exchanger 107.

[0040] Optionally, the heat sink 109 may be a fan.

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

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

[0043] First, determine whether the vehicle meets the activation conditions of the thermal management mode. Determining whether the vehicle meets the activation conditions of the thermal management mode may include: determining whether the vehicle receives a thermal management instruction, and determining whether the ambient temperature of the vehicle is within a preset temperature range; if it is determined that the vehicle receives a thermal management instruction, or that the ambient temperature of the vehicle is greater than or equal to a preset maximum temperature, or that the ambient temperature of the vehicle is less than a preset minimum temperature, then it is determined that the vehicle meets the activation conditions of the thermal management mode.

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

[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 a 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 a preset minimum temperature, the enhanced heating mode is executed.

[0046] Among them, the preset maximum temperature and the preset minimum temperature can be set according to actual needs, and this application does not limit it.

[0047] In a specific embodiment, if the vehicle meets the activation condition of the enhanced heating mode in the thermal management mode, a signal to activate the heater 103 and the first electronic water pump B1 is sent, and the first switch valve K1 and the second switch valve K2 are controlled to open.

[0048] Furthermore, in order to effectively utilize the waste heat of the engine circuit or the electric drive circuit, after the vehicle meets the conditions for starting the enhanced heating mode in the thermal management mode, it can 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, a start signal of the heater 103 and the first electronic water pump B1 is issued, and the first switch valve K1 and the second switch valve K2 are controlled to open.

[0049] like Figure 1 As shown, the system further includes a thermometer T, which is arranged on the waste heat recovery sub-circuit 108, for collecting the waste heat temperature value in real time. Among them, the preset target temperature can be set according to actual needs, and this application does not limit it.

[0050] Specifically, in extreme environments or when rapid heating is required, the enhanced heating mode needs to be turned on. When there is no residual heat in the engine circuit or the electric drive circuit, the PTC heater works, the first switch valve K1 and the second switch valve K2 are both opened, the first electronic water pump B1 is turned on, and the coolant passes through the PTC heater, the first electronic water pump B1, the first switch valve K1, the heater core 101, the one-way valve 102, and then returns to the PTC heater. The coolant passes through the PTC heater, the first electronic water pump B1, the second switch valve K2, the integrated hot and cold heat exchanger 107, and the one-way valve 102 and then returns to the PTC heater. The two circuits circulate to achieve enhanced heating needs.

[0051] In extreme environments or when rapid heating is required, the enhanced heating mode needs to be turned on. When there is waste heat in the engine circuit or the electric drive circuit, the three-way proportional valve SF opens the corresponding proportion according to the instruction, 1-2 and 1-3 of the three-way proportional valve SF are connected, the PTC heater does not work, the first switch valve K1 and the second switch valve K2 are both opened, the second electronic water pump B2 is turned on, and the first electronic water pump B1 is turned off. The coolant passes through the engine circuit or the 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, the second electronic water pump B2, and then returns to the engine circuit or the electric drive circuit. The coolant passes through the engine circuit or the electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the second switch valve K2, the cold and hot integrated heat exchanger 107, the second electronic water pump B2, and then returns to the engine circuit or the electric drive circuit. The two circuits circulate to achieve waste heat recovery and enhanced heating needs.

[0052] It should be noted that the opening ratio of the three-way proportional valve SF is related to the required cooling or heating temperature. 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 is also large. Turning off the first electronic water pump B1 is used to avoid energy waste.

[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, a second water pump start signal is issued, and the three-way proportional valve SF, the first switch valve K1 and the second switch valve K2 are controlled to open.

[0054] Specifically, in extreme environments or when rapid heating is required, the enhanced heating mode needs to be turned on. When there is waste heat in the engine circuit or the electric drive circuit, the three-way proportional valve SF opens the corresponding proportion according to the instruction, 1-2 and 1-3 are connected, the PTC heater does not work, the first switch valve K1 and the second switch valve K2 are both opened, the second electronic water pump B2 is turned on, and the first electronic water pump B1 is turned off. The coolant passes through the engine circuit or the 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, the second electronic water pump B2, and then returns to the engine or electric drive circuit. The coolant passes through the engine circuit or the electric drive circuit, the three-way proportional valve SF, the PTC heater, the first electronic water pump B1, the second switch valve K2, the cold and hot integrated heat exchanger 107, the second electronic water pump B2, and then returns to the engine circuit or the electric drive circuit. The two circuits circulate to achieve waste heat recovery and enhanced heating needs.

[0055] When a heating instruction is received, 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, a start signal of the heater 103 and the first electronic water pump B1 is issued, and the first switch valve K1 is controlled to open.

[0056] If the waste 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 controlled to open.

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

[0058] When there is waste heat in the engine circuit or the electric drive circuit, the three-way proportional valve SF opens the corresponding proportion according to the instruction, 1-2 and 1-3 are connected, the PTC heater does not work, 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 opened. The coolant passes 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, the second electronic water pump B2, and then returns to the engine or electric drive circuit for circulation, thereby realizing waste heat recovery and heating needs.

[0059] The radiator's opening position can be determined according to the thermal management mode, for example, in the enhanced heating mode, the radiator's opening position is higher; in the heating mode, the radiator's opening position is lower. The radiator in this application defaults to PWM (Pulse Width Modulation) control and is in the opening state in the initial state.

[0060] When a cooling command is received, the cooling mode is executed, including sending a start signal of the compressor 105 and controlling the first expansion valve P1 to open.

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

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

[0063] Specifically, when encountering extreme environments or when there is a need for rapid cooling, the first expansion valve P1 and the second expansion valve P2 can be controlled to open at the same time, and the refrigerant absorbs heat simultaneously through the integrated cold and hot heat exchanger 107 and the evaporator 104, and the coolant passes through the compressor 105, the condenser 106, the first expansion valve P1, the evaporator 104, and then returns to the compressor 105, and the coolant passes through the compressor 105, the condenser 106, the second expansion valve P2, the integrated cold and hot heat exchanger 107, and then returns to the compressor 105, thereby realizing an enhanced cooling mode.

[0064] Furthermore, the thermal management mode may also include an evaporator defrost mode. Judging whether the vehicle meets the activation conditions of the thermal management mode may also include: judging whether the evaporator coil temperature of the vehicle is lower than a specified temperature for a certain period of time. If so, the vehicle meets the activation conditions of the evaporator defrost mode under the thermal management mode.

[0065] If the vehicle meets the conditions for starting the evaporator defrost mode in 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, a start signal for the heater 103 and the first electronic water pump B1 is issued, and the second switch valve K2 is controlled to open.

[0066] If the waste 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 switch valve K2 are controlled to open.

[0067] Specifically, in the evaporator defrost mode, when there is no residual heat available in the engine or electric drive circuit, when there is a cooling demand in the passenger compartment and the evaporator 104 reaches the frosting critical value, at this time, by controlling the second switch valve K2 to open, the first electronic water pump B1 to turn on, and the PTC heater to turn on, the coolant flows through the integrated cold and hot heat exchanger 107, and the incoming air can quickly increase the surface temperature of the evaporator 104 to relieve 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 cold and hot heat exchanger 107, and the one-way valve 102, and then returns to the PTC heater, thereby avoiding the shutdown protection of the compressor 105 and improving user perception.

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

[0069] In the evaporator defrost mode, when there is waste heat available in the engine or electric drive circuit, when there is a demand for cooling in the passenger compartment and the evaporator 104 reaches the critical value of frosting, the three-way proportional valve SF opens the corresponding proportion according to the instruction, 1-2 and 1-3 are connected, the second switch valve K2 is opened, the second electronic water pump B2 is turned on, and the coolant flows through the integrated cold and hot heat exchanger 107. The incoming air can quickly increase the surface temperature of the evaporator 104 and relieve 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 cold and hot heat exchanger 107, and the second electronic water pump B2, and then returns to the engine or electric drive circuit, thereby avoiding the shutdown protection of the compressor 105 and improving user perception.

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

[0071] Table 1

[0072]

[0073] The system can pre-treat the air intake of the air conditioner, enhance the thermal interaction ability of the automobile air conditioning system under the external circulation condition, improve the rapid response and environmental adaptability, and at the same time, the system can realize the waste heat recovery and utilization, reduce the energy consumption of the whole vehicle, and improve the driving range. Beneficial effects: 1. By adding a hot and cold integrated heat exchanger to the external air inlet duct of the vehicle air conditioner, the air intake of the air conditioning system can be preheated or pre-cooled. 2. After pre-treatment, the intake air enters the air conditioning box again, and the double-layer processing mode improves the rapid response speed and environmental adaptability of the air conditioner.

[0074] In summary, the embodiment of the present invention provides a vehicle air conditioning control system, which is equipped with a cold and hot integrated heat exchanger at the entrance of the air inlet duct of the air conditioner. The cold and hot integrated heat exchanger can realize the pre-processing of the air inlet temperature by coupling with the warm air circuit and the air conditioning circuit, enhance the thermal interaction ability of the air conditioning system under the external circulation condition, improve the rapid response and environmental adaptability, have the air conditioning enhancement function, and greatly improve the user experience. At the same time, the system can realize the waste heat recovery and utilization, reduce the energy consumption of the whole vehicle, and improve the cruising range.

[0075] On the second aspect, based on the same inventive concept, Figure 2 As shown, an embodiment of the present invention provides a vehicle air conditioning control method, which is applied to the vehicle air conditioning control system described in any one of the first aspects above, and the method includes the following steps S101 to S102:

[0076] Step S101, determining whether the vehicle meets the activation conditions of the thermal management mode;

[0077] Step S102: if the vehicle meets the activation condition of the enhanced heating mode in the thermal management mode, a heater and a first electronic water pump activation signal is issued, and the first switch valve and the second switch valve are controlled to open.

[0078] As an optional embodiment, after the vehicle meets the activation conditions of the enhanced heating mode in the thermal management mode, it also 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 lower than the preset target temperature, a heater and a first electronic water pump activation signal is issued, and the first switch valve and the second switch valve are controlled to open.

[0079] As an optional embodiment, if the vehicle meets the activation conditions of the enhanced cooling mode in the 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 activation conditions of the evaporator defrost mode in 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 lower than the preset target temperature, a heater and a first electronic water pump start signal is issued, and the second switch valve is controlled to open.

[0081] A vehicle air conditioning control method provided in an embodiment of the present invention has the same implementation principle and technical effects as those of the aforementioned system embodiment. For the sake of brief description, for matters not mentioned in the method embodiment, reference may be made to the corresponding contents in the aforementioned system embodiment.

[0082] In a fourth aspect, 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] Those skilled in the art will readily appreciate other embodiments of the invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0084] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented 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] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A module that specifies functions in one or more boxes.

[0086] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction module, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0087] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0088] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0089] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A vehicle air conditioning control system, characterized in that: include: Heating circuit, air conditioning circuit and pre-treatment circuit; The warm air circuit comprises: a warm air core, a one-way valve, a heater, a first electronic water pump and a first switch valve which are connected in sequence, and the warm air core is also connected to the first switch valve; The air conditioning circuit comprises: an evaporator, a compressor, a condenser and a first expansion valve which are connected in sequence, and the evaporator is also connected to the first expansion valve; The pretreatment circuit includes: a second switch valve, a second expansion valve and a cold and hot integrated heat exchanger. The heat source input end of the cold and hot integrated heat exchanger is connected between the first electronic water pump and the first switch valve through the second switch valve. The cold source input end of the cold and hot integrated heat exchanger is connected between the condenser and the first expansion valve through the second expansion valve. The first output end of the cold and hot integrated heat exchanger is arranged between the warm air core and the one-way valve.

2. The system according to claim 1, characterized in that The cold-hot integrated heat exchanger is arranged at the entrance of the air inlet outer air duct of the air conditioner.

3. The system according to claim 1, characterized in that The warm air circuit further comprises: 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.

4. The system according to claim 3, characterized in that The warm air 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 cold and hot heat exchanger.

5. The system according to 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: Applied to a vehicle air conditioning control system according to any one of claims 1 to 5, the method comprises: Determine whether the vehicle meets the conditions for starting the thermal management mode; If the vehicle meets the activation conditions of the enhanced heating mode in the thermal management mode, a heater and a first electronic water pump activation signal is sent, and the first switch valve and the second switch valve are controlled to open.

7. The method according to claim 6, characterized in that After the vehicle meets the conditions for opening the enhanced heating mode in the 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 a preset target temperature; If the residual heat temperature is lower than the preset target temperature, a heater and a first electronic water pump start signal is sent, and the first switch valve and the second switch valve are controlled to open.

8. The method according to claim 7, characterized in that If the vehicle meets the activation conditions of the enhanced cooling mode in the thermal management mode, the first expansion valve and the second expansion valve are controlled to open.

9. The method according to claim 6, characterized in that If the vehicle meets the conditions for starting the evaporator defrost mode in 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 lower than the preset target temperature, a heater and a first electronic water pump start signal is sent, and the second switch valve is controlled to open.

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

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