Air conditioner control method and device, storage medium, electronic equipment and vehicle

Abstract

The invention provides an air conditioner control method and device, a storage medium, electronic equipment, a vehicle and an air conditioner controller applied to the vehicle. According to the method, the anti-frosting temperature threshold value is dynamically adjusted according to the actual gear of the air blower, so that the air conditioner cannot be frosted, the starting and stopping frequency of the compressor can be reduced, and the problem that when an existing vehicle-mounted air conditioner is cooled under the low heat load, the air conditioner cannot be frosted is effectively solved. And the driving experience is influenced and the service life of the electromagnetic clutch is shortened due to the fact that the electromagnetic clutch of the compressor is frequently attracted / disconnected to form noise and impact an engine.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an air-conditioning control method, device, storage medium, electronic equipment and vehicle. Background Art

[0002] Currently, most vehicles are equipped with on-board air conditioners with fixed-displacement compressors, which can meet the temperature regulation needs of drivers and passengers.

[0003] However, when existing vehicle air conditioners are cooling down under medium and low heat loads, the compressor electromagnetic clutch is prone to frequent engagement / disengagement, which not only creates obvious noise and impacts the engine, affecting the driving experience, but also causes increased wear on the drive disc and reduces the life of the electromagnetic clutch. Summary of the invention

[0004] In view of this, the present invention aims to propose an air-conditioning control method, device, storage medium, electronic device and vehicle to solve the problem that the compressor electromagnetic clutch needs to be frequently engaged / disengaged when cooling under low heat load in existing vehicle air-conditioning, which not only easily affects the driving experience due to the generation of noise and impact on the engine, but also reduces the life of the electromagnetic clutch.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] An air conditioning control method, wherein the method is applied to an air conditioning controller of a vehicle, the method comprising:

[0007] When it is determined that the user has a cooling demand, the actual gear position of the air conditioner blower is obtained;

[0008] According to the actual gear position, setting an anti-frost temperature threshold of the air conditioner evaporator;

[0009] The air conditioning compressor is controlled to start and stop according to the anti-frosting temperature threshold and the actual temperature of the evaporator surface.

[0010] Furthermore, in the air conditioning control method, a pin is provided on the circuit board of the air conditioning controller, the pin is connected to the negative pole of the blower motor and is used to detect the voltage between the negative pole of the blower motor and the ground to determine the gear position of the blower;

[0011] Get the actual gear position of the air conditioner blower, including:

[0012] The voltage value of the pin to ground is read, and the actual gear position of the blower is determined according to the voltage value.

[0013] Furthermore, in the air conditioning control method, the anti-frost temperature threshold includes an anti-frost temperature upper limit value and an anti-frost temperature lower limit value;

[0014] According to the anti-frosting temperature threshold and the actual temperature of the evaporator surface, the air conditioning compressor is controlled to start and stop, including:

[0015] When the actual temperature is greater than the anti-frosting temperature upper limit, controlling the compressor to turn on;

[0016] When the actual temperature is less than the lower limit of the anti-frosting temperature, the compressor is controlled to be closed.

[0017] Furthermore, in the air conditioning control method, setting the anti-frost temperature threshold of the air conditioning evaporator according to the actual gear position includes:

[0018] When the actual gear position is the first gear position, the anti-frost temperature upper limit value is set to the first temperature upper limit value, and the anti-frost temperature lower limit value is set to the first temperature lower limit value;

[0019] When the actual gear position is the second gear position, the anti-frost temperature upper limit value is set to the second temperature upper limit value, and the anti-frost temperature lower limit value is set to the second temperature lower limit value;

[0020] Among them, the air supply volume of the second gear is smaller than the air supply volume of the first gear, the second temperature upper limit value is larger than the first temperature upper limit value; the second temperature lower limit value is smaller than or equal to the first temperature lower limit value.

[0021] Furthermore, in the air conditioning control method, the first temperature upper limit value is 3°C, the first temperature lower limit value is 1°C, the second temperature upper limit value is 6°C, and the second temperature lower limit value is 1°C.

[0022] Furthermore, in the air conditioning control method, before controlling the start and stop of the air conditioning compressor according to the temperature threshold and the compressor temperature, the method further includes:

[0023] Get the initial cycle mode of the air conditioner;

[0024] When the initial circulation mode is the external circulation mode, the air conditioner is controlled to cyclically switch between the internal circulation mode and the external circulation mode.

[0025] Furthermore, in the air conditioning control method, controlling the air conditioning to cyclically switch between the internal circulation mode and the external circulation mode includes:

[0026] When the duration of the air conditioner being in the external circulation mode reaches a first duration threshold, controlling the air conditioner to switch to the internal circulation mode;

[0027] When the duration of the air conditioner being in the internal circulation mode reaches a second duration threshold, the air conditioner is controlled to switch to the external circulation mode.

[0028] Furthermore, the air conditioning control method further comprises:

[0029] When it is determined that the user has no cooling demand, the air conditioner is adjusted to the initial circulation mode.

[0030] Another object of the present invention is to provide an air conditioning control device, wherein the air conditioning controller is applied to a vehicle, and the device comprises:

[0031] A first acquisition module is used to acquire the actual gear position of the air conditioner blower when it is determined that the user has a cooling demand;

[0032] A first adjustment module, used for setting an anti-frost temperature threshold of an air conditioner evaporator according to the actual gear position;

[0033] The control module is used to control the start and stop of the air-conditioning compressor according to the anti-frost temperature threshold and the actual temperature of the evaporator surface.

[0034] Furthermore, in the device, a pin is provided on the circuit board of the air conditioner controller, the pin is connected to the negative pole of the blower motor and is used to detect the voltage between the negative pole of the blower motor and the ground to determine the gear position of the blower;

[0035] The first acquisition module is specifically used to read the voltage value of the pin to the ground, and determine the actual gear position of the blower according to the voltage value.

[0036] Furthermore, in the device, the anti-frost temperature threshold comprises an anti-frost temperature upper limit value and an anti-frost temperature lower limit value, and the anti-frost temperature upper limit value is greater than the anti-frost temperature lower limit value;

[0037] The control module comprises:

[0038] A first control unit, configured to control the compressor to start when the actual temperature is greater than the anti-frosting temperature upper limit;

[0039] The second control unit is used to control the compressor to close when the actual temperature is less than the lower limit of the anti-frost temperature.

[0040] Furthermore, in the device, the first adjustment module includes:

[0041] A first setting unit, configured to set the anti-frost temperature upper limit value to a first temperature upper limit value and to set the anti-frost temperature lower limit value to a first temperature lower limit value when the actual gear position is the first gear position;

[0042] A second setting unit is used to set the anti-frost temperature upper limit value to a second temperature upper limit value and to set the anti-frost temperature lower limit value to a second temperature lower limit value when the actual gear position is the second gear position;

[0043] Among them, the air supply volume of the second gear is smaller than the air supply volume of the first gear, the second temperature upper limit value is larger than the first temperature upper limit value; the second temperature lower limit value is smaller than or equal to the first temperature lower limit value.

[0044] Furthermore, in the device, the first temperature upper limit value is 3°C, the first temperature lower limit value is 1°C, the second temperature upper limit value is 6°C, and the second temperature lower limit value is 1°C.

[0045] Furthermore, the device also includes:

[0046] A second acquisition module is used to acquire the initial circulation mode of the air conditioner before controlling the start and stop of the air conditioner compressor according to the temperature threshold and the compressor temperature;

[0047] The second adjustment module is used to control the air conditioner to cyclically switch between the internal circulation mode and the external circulation mode when the initial circulation mode is the external circulation mode.

[0048] Furthermore, in the device, the second adjustment module includes:

[0049] A third control unit is used to control the air conditioner to switch to the internal circulation mode when the duration of the air conditioner being in the external circulation mode reaches a first duration threshold;

[0050] The fourth control unit is used to control the air conditioner to switch to the external circulation mode when the duration of the air conditioner being in the internal circulation mode reaches a second duration threshold.

[0051] Furthermore, the device also includes:

[0052] The third adjustment module is used to adjust the air conditioner to the initial circulation mode when it is determined that the user has no cooling demand.

[0053] Compared with the prior art, the air conditioning control method and device of the present invention have the following advantages:

[0054] When it is determined that the user has a cooling demand, the actual gear position of the air conditioner blower is obtained; according to the actual gear position, the anti-frost temperature threshold of the air conditioner evaporator is set; according to the anti-frost temperature threshold and the actual temperature of the evaporator surface, the start and stop of the air conditioner compressor is controlled. Because the anti-frost temperature threshold is dynamically adjusted according to the actual gear position of the blower, the air conditioner will not frost and the start and stop frequency of the compressor can be reduced. This can effectively solve the problem that when cooling under low heat load in existing vehicle air conditioners, the frequent engagement / disengagement of the compressor electromagnetic clutch will cause noise, impact the engine, affect the driving experience, and reduce the life of the electromagnetic clutch.

[0055] Another object of the present invention is to provide a storage medium on which a plurality of instructions are stored, wherein the instructions are suitable for being loaded by a processor and executing the air conditioning control method as described above.

[0056] Another object of the present invention is to provide an electronic device, comprising:

[0057] a processor adapted to implement the instructions; and

[0058] The storage medium is suitable for storing a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executing the air conditioning control method as described above.

[0059] Yet another object of the present invention is to provide a vehicle, wherein the vehicle comprises an air-conditioning system, and the vehicle further comprises the air-conditioning control device as described above.

[0060] The storage medium, electronic device and vehicle have the same advantages as the above-mentioned air conditioning control method and device over the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0062] Figure 1 A schematic flow chart of an air conditioning control method provided by an embodiment of the present invention;

[0063] Figure 2 A circuit diagram of an air conditioning system provided by an embodiment of the present invention;

[0064] Figure 3 This is a diagram showing the relationship between the compressor state and the evaporator surface temperature when the blower is in a high gear in an embodiment of the present invention;

[0065] Figure 4 This is a diagram showing the relationship between the compressor state and the evaporator surface temperature when the blower is in a low gear in an embodiment of the present invention;

[0066] Figure 5 is an execution logic diagram of the air conditioning control method in an embodiment of the present invention;

[0067] Figure 6 This is a schematic diagram of the structure of a charging control device proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0069] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0070] See also Figure 1 , shows a schematic flow chart of an air-conditioning control method provided in an embodiment of the present invention, the method is applied to an air-conditioning controller of a vehicle, and the method includes steps S100 to S300.

[0071] In the embodiment of the present invention, the vehicle includes an air conditioning system, such as Figure 2 As shown, the air-conditioning system includes the above-mentioned air-conditioning controller 10, which is electrically connected to the compressor electromagnetic clutch, the blower switch 11, the hot and cold air door motor 12, the mode servo motor 13, the internal and external circulation air door motor 14 and the evaporator surface temperature sensor 15, wherein the above-mentioned compressor electromagnetic clutch is used to control the start and stop of the air-conditioning compressor, the above-mentioned blower switch 11 is used to control the blower to deliver the air to be cooled to the evaporator according to different gear components, the above-mentioned hot and cold air door motor 12 is used to set the temperature in the car, the above-mentioned mode servo motor 13 is used to adjust the air outlet mode of the air conditioner, and the above-mentioned internal and external circulation air door motor 14 is used to switch and adjust the circulation mode of the air conditioner, and the circulation mode includes internal circulation and external circulation.

[0072] Step S100: When it is determined that the user has a cooling demand, the actual gear position of the air conditioner blower is obtained.

[0073] In the above step S100, when the user turns on the air conditioner and presses the AC button, it is determined that the user has a cooling demand, that is, as long as the cooling switch is in the on state, the current gear state of the air conditioner blower is obtained to determine its actual gear.

[0074] In practical applications, because the air conditioning controller is electrically connected to the blower, the gear state of the blower can be determined.

[0075] The gear position of the above-mentioned blower can be automatically controlled by the air-conditioning controller according to a program, or can be manually selected and controlled by the user.

[0076] Optionally, in one embodiment, see Figure 2 The circuit board of the air conditioner controller is provided with a pin A5, which is connected to the negative pole of the blower motor and is used to detect the voltage between the negative pole of the blower motor and the ground to determine the gear position of the blower;

[0077] Get the actual gear position of the air conditioner blower, including:

[0078] The voltage value of the pin A5 to ground is read, and the actual gear position of the blower is determined according to the voltage value.

[0079] In this embodiment, if Figure 2 As shown, each gear position of the blower switch 11 is respectively connected in series with a speed regulating resistor 16 of different resistance values ​​and then connected to the negative electrode of the blower motor 17, and the blower switch 11 is connected to the negative electrode of the power supply. Therefore, when the blower is in different gears, the resistance of the speed regulating resistor connected to the circuit is different, and the voltage between the negative electrode of the blower motor 17 and the ground is also different. The corresponding relationship between the voltage between the negative electrode of the blower motor and the ground and the blower gear position is determined in advance. By subsequently detecting the voltage between the negative electrode of the blower motor and the ground and the above-mentioned corresponding relationship, the air-conditioning controller can determine the actual gear position of the blower.

[0080] Among them, because the above-mentioned pin A5 is set on the circuit board of the air-conditioning controller 10, and the blower switch 11 is also fixed on the above-mentioned circuit board, and the shell of the blower switch 11 is grounded, the air-conditioning controller can conveniently collect the voltage of pin A5 to the ground as the voltage of the negative pole of the blower motor 17 to the ground, and then determine the actual gear position of the blower.

[0081] Step S200: setting an anti-frost temperature threshold of the air-conditioning evaporator according to the actual gear position.

[0082] In the above step S200, because when the blower is in a low gear, the air volume delivered to the evaporator is small, the surface temperature of the evaporator drops to the frosting temperature quickly, forcing the compressor electromagnetic clutch to disconnect, and then the evaporator surface will quickly return to the compressor starting temperature, forcing the electromagnetic clutch to engage again, resulting in the electromagnetic clutch needing to engage / disengage at a higher frequency; while when the blower is in a high gear, the air volume delivered to the evaporator is large, and the surface temperature of the evaporator drops to the frosting temperature threshold slowly, then it is necessary to control the air conditioning compressor electromagnetic clutch to disconnect, and then it takes a long time for the evaporator surface to quickly return to the compressor starting temperature, and then it is necessary to control the electromagnetic clutch to engage again. Therefore, different anti-frost temperature thresholds can be dynamically set under different blower gears, so that no matter what gear the blower is in, when the compressor is turned on, the evaporator surface temperature can be slowly reduced to the frosting temperature, and when the compressor is turned off, the evaporator surface takes a long time to return to the compressor start-up temperature, thereby extending the single working time of the compressor, reducing the opening and closing frequency of the electromagnetic clutch, and effectively alleviating the noise, engine impact and other adverse driving experiences caused by the frequent opening and closing of the compressor electromagnetic clutch when cooling under low and medium heat loads of the vehicle air conditioner, thereby extending the service life of the electromagnetic clutch.

[0083] Step S300: Control the start and stop of the air-conditioning compressor according to the anti-frost temperature threshold and the actual temperature of the evaporator surface.

[0084] In the above step S300, the temperature of the evaporator surface is continuously obtained as the above actual temperature, and then based on the anti-frost temperature threshold determined in step S200, when it is judged that the evaporator is about to frost, the electromagnetic clutch of the compressor is controlled to be disconnected, so that the compressor is turned off and the cooling of the vehicle interior is suspended; and based on the anti-frost temperature threshold determined in step S200, when it is judged that the evaporator is free from the frosting temperature state, the electromagnetic clutch of the compressor is controlled to be engaged, so that the compressor is turned on and continues to cool the vehicle interior.

[0085] Compared with the prior art, the air conditioning control method of the present invention has the following advantages:

[0086] Because the anti-frost temperature threshold is dynamically adjusted according to the actual gear position of the blower, the air conditioner will not frost and the start and stop frequency of the compressor can be reduced. This can effectively solve the problem of frequent engagement / disengagement of the compressor electromagnetic clutch during cooling under low heat load in existing vehicle air conditioners.

[0087] Optionally, in one embodiment, the anti-frost temperature threshold includes an anti-frost temperature upper limit value and an anti-frost temperature lower limit value, and the anti-frost temperature upper limit value is greater than the anti-frost temperature lower limit value;

[0088] The above step S103 includes steps S301 and S302.

[0089] Step S301: When the actual temperature is greater than the anti-frost temperature upper limit, control the compressor to turn on.

[0090] In this step, when the actual temperature of the evaporator surface is greater than the above-mentioned anti-frost temperature upper limit, it means that the evaporator has gotten rid of the frosting state, and because the user still has a cooling demand, the electromagnetic clutch of the compressor is controlled to engage, so that the compressor is turned on and continues to cool the vehicle.

[0091] Step S302: When the actual temperature is less than the lower limit of the anti-frost temperature, control the compressor to turn off.

[0092] In this step, when the actual temperature of the evaporator surface is lower than the above-mentioned anti-frost temperature lower limit, it means that the evaporator is about to enter a frosting state. In order to avoid frosting of the evaporator, the electromagnetic clutch of the compressor is controlled to disconnect, so that the compressor is turned off and the hot air delivered by the blower is used to heat the evaporator surface.

[0093] In this implementation, because there is a certain temperature difference between the anti-frost temperature upper limit value and the anti-frost temperature lower limit value, and when the actual temperature on the evaporator surface is greater than the anti-frost temperature upper limit value, the compressor is controlled to be turned on, and when the actual temperature is less than the anti-frost temperature lower limit value, the compressor is controlled to be turned off; when the actual temperature on the evaporator surface is greater than or equal to the above-mentioned anti-frost temperature lower limit value, and the actual temperature is less than or equal to the above-mentioned anti-frost temperature upper limit value, the compressor is controlled to maintain the current state, that is, as long as the actual temperature on the evaporator surface is within the above-mentioned temperature range, there is no need to adjust the opening and closing state of the electromagnetic clutch of the compressor in the evaporator, and the opening and closing frequency of the electromagnetic clutch can be reduced to a certain extent.

[0094] Optionally, in one implementation, the above step S102 includes steps S201 to S202:

[0095] Step S201, when the actual gear position is the first gear position, setting the anti-frost temperature upper limit value to the first temperature upper limit value, and setting the anti-frost temperature lower limit value to the first temperature lower limit value;

[0096] Step S202: when the actual gear position is the second gear position, setting the anti-frost temperature upper limit value to the second temperature upper limit value, and setting the anti-frost temperature lower limit value to the second temperature lower limit value;

[0097] Among them, the air supply volume of the second gear is smaller than the air supply volume of the first gear, the second temperature upper limit value is larger than the first temperature upper limit value; the second temperature lower limit value is smaller than or equal to the first temperature lower limit value.

[0098] In this embodiment, a higher anti-frost temperature upper limit value is set when the blower is in a gear with a smaller air supply volume, and a lower anti-frost temperature upper limit value is set when the blower is in a gear with a larger air supply volume, and the anti-frost temperature lower limit value when the blower is in a gear with a smaller air supply volume is not higher than the anti-frost temperature lower limit value when the blower is in a higher gear. That is, when the blower is in a gear with a smaller air supply volume, the evaporator surface temperature that triggers the compressor to start is higher, and the evaporator surface temperature that triggers the compressor to shut down is lower, so that when the blower is in a gear with a smaller air supply volume, the evaporator surface temperature will not drop to the frosting temperature state too quickly due to the small amount delivered by the blower, which can effectively reduce the opening and closing frequency of the electromagnetic clutch, thereby reducing the noise caused by the frequent opening and closing of the electromagnetic clutch and the impact on the engine.

[0099] For example, when the blower gears include first gear, second gear, third gear and fourth gear with air supply volume from small to large, the first gear may be third gear or fourth gear, and the second gear may be first gear or second gear.

[0100] Among them, the second temperature upper limit value, the first temperature upper limit value, the second temperature lower limit value and the first temperature lower limit value can be specifically calibrated according to an actual vehicle.

[0101] Optionally, in a specific embodiment, the first temperature upper limit value is 3°C, the first temperature lower limit value is 1°C, the second temperature upper limit value is 6°C, and the second temperature lower limit value is 1°C. Through the above settings, the opening and closing frequency of the compressor electromagnetic clutch in low gear can be significantly reduced.

[0102] See also Figure 3 , shows the relationship between the compressor state and the evaporator surface temperature when the blower is in a high gear in an embodiment of the present invention. Figure 3 As shown in the figure, when the blower gear is in the third or fourth gear, the relationship between the compressor state and the evaporator surface temperature Figure 3 As shown: when the temperature of the evaporator surface is greater than 3°C, the compressor is in the open state, and when the temperature of the evaporator surface is less than 1°C, the compressor is in the closed state;

[0103] See also Figure 4 , shows the relationship between the compressor state and the evaporator surface temperature when the blower is in a low gear in an embodiment of the present invention. Figure 4 As shown, when the blower gear is the first gear or the second gear, the compressor is turned on when the temperature of the evaporator surface is greater than 6°C, and the compressor is turned off when the temperature of the evaporator surface is less than 1°C.

[0104] Optionally, in one implementation, the air conditioning control method provided in the embodiment of the present invention further includes steps S104 to S105 before the above step S103:

[0105] Step S104: Acquire the initial circulation mode of the air conditioner.

[0106] In step S104, when the user needs to turn on the air conditioner, presses the AC button and turns on the blower, the air conditioner controller (Microcontroller Unit, MCU) not only detects the evaporator temperature sensor, but also detects whether the air conditioner controller is in the internal circulation or external circulation position and records it.

[0107] Step S105: When the initial circulation mode is the external circulation mode, control the air conditioner to cyclically switch between the internal circulation mode and the external circulation mode.

[0108] In step S105, when it is detected that the air conditioner is in the external circulation mode, the mode user tends to ensure that the air quality in the car is good, but at this time the user has a cooling demand, and in the external circulation mode, the air conditioning refrigeration effect is very poor and the air conditioning system pressure is high, the compressor load is large, and the engine power consumption is high, resulting in a decrease in the power of the whole vehicle, and the compressor needs to work under high pressure conditions for a long time, which will lead to an increased failure rate. Therefore, controlling the air conditioner to switch between the internal circulation mode and the external circulation mode can not only meet the user's demand for better air quality in the car, but also ensure the air conditioning refrigeration effect, avoid the air conditioning system being in a high pressure state for a long time, reduce engine power consumption, and effectively improve the power of the whole vehicle.

[0109] Optionally, in the above step S105, when it is detected that the air conditioner is in the external circulation position, if the user does not switch the air conditioner to the internal circulation mode within the preset time, the air conditioner controller executes the above step of controlling the air conditioner to cyclically switch between the internal circulation mode and the external circulation mode through the program background, so that the user can determine the final executed circulation mode, giving the user a sense of participation. For example, the above preset time can be 10s, 20s, 30s, 40s or 50s.

[0110] In this embodiment, when it is detected that the air conditioner is in the internal circulation mode, the MCU does not make any adjustment to switch the air conditioner circulation mode, that is, directly executes the above step S103.

[0111] Optionally, in a specific implementation, controlling the air conditioner to cyclically switch between the internal circulation mode and the external circulation mode includes steps S501 to S502:

[0112] Step S501: When the duration of the air conditioner being in the external circulation mode reaches a first duration threshold, control the air conditioner to switch to the internal circulation mode.

[0113] In step S501, the first duration threshold is the duration threshold for switching from the external circulation mode to the internal circulation mode. When the air conditioner is in the external circulation mode and the duration reaches the first duration threshold, it means that enough fresh air has been inhaled into the vehicle, so the air conditioner is controlled to switch to the internal circulation mode to better meet the cooling demand. Optionally, the first duration threshold can be 2 minutes, 3 minutes or 4 minutes.

[0114] Step S502: When the duration of the air conditioner being in the internal circulation mode reaches a second duration threshold, control the air conditioner to switch to the external circulation mode.

[0115] In step S502, the second time threshold is the time threshold for switching from the internal circulation mode to the external circulation mode. When the air conditioner is in the internal circulation mode and the duration reaches the second time threshold, it means that the fresh air in the car has been consumed, so the air conditioner is controlled to switch to the external circulation mode to re-inhale fresh air. Optionally, the second time threshold can be 40 minutes, 50 minutes or 60 minutes.

[0116] In this embodiment, when the duration of the air conditioner in the external circulation mode reaches a first duration threshold, the air conditioner is controlled to switch to the internal circulation mode, and when the duration of the air conditioner in the internal circulation mode reaches a second duration threshold, the air conditioner is controlled to switch to the external circulation mode, which can effectively take into account both the air quality requirements and the air conditioning cooling effect.

[0117] Optionally, in one implementation, the air conditioning control method provided in the embodiment of the present invention further includes step S106:

[0118] Step S106: When it is determined that the user has no cooling demand, the air conditioner is adjusted to the initial circulation mode.

[0119] In this implementation, when it is detected that the user presses the AC button, it means that the user has no cooling demand, that is, the compressor no longer needs to work, so the air conditioner is adjusted to the air conditioning circulation mode when the AC button is turned on, that is, the initial circulation mode recorded above, to match the user's usage habits and setting preferences, and provide convenience for the user.

[0120] In practical applications, see Figure 5 , shows an execution logic diagram of the air conditioning control method in an embodiment of the present invention.

[0121] like Figure 5 As shown, in step S511, after the user presses the AC button and turns on the blower, it is determined that the user has a cooling demand, and then steps S512 and S516 are entered;

[0122] In step S512, the MCU detects whether the air conditioner is currently in the internal circulation state and records the current state M1. If yes, the current setting is maintained; otherwise, the MCU waits for 30 seconds and then enters step S513;

[0123] In step S513, it is determined whether the user switches the loop state to the inner loop, if yes, the process proceeds to step S514, otherwise, the process proceeds to step S515;

[0124] In step S514, the MCU switches the air conditioning circulation mode to internal circulation according to the user operation;

[0125] In step S515, the MCU automatically switches the air conditioning circulation mode to the internal circulation, and automatically switches to the external circulation for 3 minutes every 50 minutes during the internal circulation to inhale fresh air; then enters step S525;

[0126] In step S516, the MCU continuously detects the gear position of the blower and determines whether it is in the high gear of the 3rd gear or the 4th gear. If yes, the process goes to step S517, otherwise, the process goes to step S522;

[0127] In step S517, the MCU continuously obtains whether the evaporator surface temperature detected by the evaporator temperature sensor is greater than 3°C, if yes, it goes to step S518, otherwise it goes to step S520;

[0128] In step S518, the MCU controls the compressor to remain turned on to cool the interior of the vehicle, and then proceeds to step S519 and step S524;

[0129] In step S519, it is detected whether the blower is in a high-speed state and the evaporator surface temperature is less than 1°C. If yes, it proceeds to step S520, otherwise it proceeds to step S521;

[0130] In step S520, the MCU controls the compressor to turn off to prevent the evaporator from frosting;

[0131] In step S521, the MCU controls the compressor to remain turned on to continue cooling the interior of the vehicle;

[0132] In step S522, the MCU detects whether the surface temperature of the evaporator is greater than 6°C. If so, it proceeds to step S518, otherwise it proceeds to step S523;

[0133] In step S523, the MCU controls the compressor to turn off to prevent the evaporator from frosting;

[0134] In step S524, it is detected whether the blower is in a low gear state and the evaporator surface temperature is less than 1°C. If yes, it goes to step S523, otherwise it goes to step S521;

[0135] In step S525, by detecting whether the user turns off the AC button, it is determined whether the user has no cooling demand. If yes, the process proceeds to step S526, otherwise, the above step S511 is continued.

[0136] In step S526, the MCU controls the compressor to turn off through the electromagnetic clutch of the compressor, and adjusts the circulation damper to the M1 position to restore the initial circulation state.

[0137] Another object of the present invention is to provide an air conditioning control device, wherein the air conditioning controller is applied to a vehicle, wherein Figure 6 , Figure 6 A schematic diagram of the structure of an air conditioning control device proposed in an embodiment of the present invention is shown, and the device comprises:

[0138] A first acquisition module 61 is used to acquire the actual gear position of the air conditioner blower when it is determined that the user has a cooling demand;

[0139] A first adjustment module 62, configured to set an anti-frost temperature threshold of an air conditioner evaporator according to the actual gear position;

[0140] The control module 63 is used to control the start and stop of the air-conditioning compressor according to the anti-frost temperature threshold and the actual temperature of the evaporator surface.

[0141] In the device described in the embodiment of the present invention, the anti-frosting temperature threshold is dynamically adjusted according to the actual gear position of the blower, so that the air conditioner will not frost and the start and stop frequency of the compressor can be reduced. This can effectively solve the problem that when cooling down under low heat load in existing vehicle air conditioners, the frequent engagement / disengagement of the compressor electromagnetic clutch will easily cause noise, impact the engine, affect the driving experience, and reduce the life of the electromagnetic clutch.

[0142] Optionally, in the device, a pin is provided on the circuit board of the air conditioner controller, the pin is connected to the negative pole of the blower motor and is used to detect the voltage between the negative pole of the blower motor and the ground to determine the gear position of the blower;

[0143] The first acquisition module 61 is specifically used to read the voltage value of the pin to the ground, and determine the actual gear position of the blower according to the voltage value.

[0144] Optionally, in the device, the anti-frost temperature threshold comprises an anti-frost temperature upper limit value and an anti-frost temperature lower limit value, and the anti-frost temperature upper limit value is greater than the anti-frost temperature lower limit value;

[0145] The control module 63 includes:

[0146] A first control unit, configured to control the compressor to start when the actual temperature is greater than the anti-frosting temperature upper limit;

[0147] The second control unit is used to control the compressor to close when the actual temperature is less than the lower limit of the anti-frost temperature.

[0148] Optionally, in the device, the first adjustment module 62 includes:

[0149] A first setting unit, configured to set the anti-frost temperature upper limit value to a first temperature upper limit value and to set the anti-frost temperature lower limit value to a first temperature lower limit value when the actual gear position is the first gear position;

[0150] A second setting unit is used to set the anti-frost temperature upper limit value to a second temperature upper limit value and to set the anti-frost temperature lower limit value to a second temperature lower limit value when the actual gear position is the second gear position;

[0151] Among them, the air supply volume of the second gear is smaller than the air supply volume of the first gear, the second temperature upper limit value is larger than the first temperature upper limit value; the second temperature lower limit value is smaller than or equal to the first temperature lower limit value.

[0152] Optionally, in the device, the first temperature upper limit value is 3°C, the first temperature lower limit value is 1°C, the second temperature upper limit value is 6°C, and the second temperature lower limit value is 1°C.

[0153] Optionally, the device further comprises:

[0154] A second acquisition module is used to acquire the initial circulation mode of the air conditioner before controlling the start and stop of the air conditioner compressor according to the temperature threshold and the compressor temperature;

[0155] The second adjustment module is used to control the air conditioner to cyclically switch between the internal circulation mode and the external circulation mode when the initial circulation mode is the external circulation mode.

[0156] Optionally, in the device, the second adjustment module includes:

[0157] A third control unit is used to control the air conditioner to switch to the internal circulation mode when the duration of the air conditioner in the external circulation mode reaches a first duration threshold;

[0158] The fourth control unit is used to control the air conditioner to switch to the external circulation mode when the duration of the air conditioner being in the internal circulation mode reaches a second duration threshold.

[0159] Optionally, the device further comprises:

[0160] The third adjustment module is used to adjust the air conditioner to the initial circulation mode when it is determined that the user has no cooling demand.

[0161] Another object of the present invention is to provide a storage medium on which a plurality of instructions are stored, wherein the instructions are suitable for being loaded by a processor and executing the air conditioning control method as described above.

[0162] Another object of the present invention is to provide an electronic device, comprising:

[0163] a processor adapted to implement the instructions; and

[0164] The storage medium is suitable for storing a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executing the air conditioning control method as described above.

[0165] Yet another object of the present invention is to provide a vehicle, the vehicle comprising an air-conditioning system, wherein the vehicle further comprises the air-conditioning control device as described above.

[0166] The storage medium, electronic device and vehicle have the same advantages as the above-mentioned air conditioning control method and device over the prior art, which will not be repeated here.

[0167] In summary, the air conditioning control method, device, storage medium, electronic device and vehicle provided by the present application obtain the actual gear position of the air conditioning blower when it is determined that the user has a cooling demand; set the anti-frost temperature threshold of the air conditioning evaporator according to the actual gear position; and control the start and stop of the air conditioning compressor according to the anti-frost temperature threshold and the actual temperature of the evaporator surface. Because the anti-frost temperature threshold is dynamically adjusted according to the actual gear position of the blower, the air conditioning will not frost and the start and stop frequency of the compressor can be reduced. This can effectively solve the problem that when cooling under low heat load in existing vehicle air conditioners, the frequent engagement / disengagement of the compressor electromagnetic clutch will cause noise, impact the engine, affect the driving experience, and reduce the life of the electromagnetic clutch.

[0168] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0169] It will be appreciated by those skilled in the art that the embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the embodiments of 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 embodiments of 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 codes.

[0170] In a typical configuration, the computer device includes one or more processors (CPU), input / output interfaces, network interfaces and memory. Memory may include non-permanent memory in computer-readable media, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. Memory is an example of a computer-readable medium. Computer-readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, modules of programs or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. According to the definition in this article, computer-readable media does not include non-transitory media such as modulated data signals and carrier waves.

[0171] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems), and computer program products according to the 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 the 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 terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal 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 device that provides the functions specified in a block or multiple blocks.

[0172] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0173] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0174] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional 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 embodiments of the present invention.

[0175] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0176] The air conditioning control method, device, storage medium, electronic device and vehicle provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An air conditioning control method, It is characterized in that An air conditioning controller for a vehicle, the method comprising: When it is determined that the user has a cooling demand, the actual gear position of the air conditioner blower is obtained; According to the actual gear position, setting an anti-frost temperature threshold of the air conditioner evaporator; The air conditioning compressor is controlled to start and stop according to the anti-frosting temperature threshold and the actual temperature of the evaporator surface.

2. The control method according to claim 1, It is characterized in that The circuit board of the air conditioner controller is provided with a pin, the pin is connected to the negative pole of the blower motor and is used to detect the voltage of the negative pole of the blower motor to the ground to determine the gear position of the blower; Get the actual gear position of the air conditioner blower, including: The voltage value of the pin to ground is read, and the actual gear position of the blower is determined according to the voltage value.

3. The control method according to claim 1, It is characterized in that The anti-frost temperature threshold includes an anti-frost temperature upper limit value and an anti-frost temperature lower limit value, and the anti-frost temperature upper limit value is greater than the anti-frost temperature lower limit value; According to the anti-frosting temperature threshold and the actual temperature of the evaporator surface, the air conditioning compressor is controlled to start and stop, including: When the actual temperature is greater than the anti-frosting temperature upper limit, controlling the compressor to turn on; When the actual temperature is less than the lower limit of the anti-frosting temperature, the compressor is controlled to be closed.

4. The control method according to claim 3, It is characterized in that According to the actual gear position, setting an anti-frost temperature threshold of the air conditioner evaporator includes: When the actual gear position is the first gear position, the anti-frost temperature upper limit value is set to the first temperature upper limit value, and the anti-frost temperature lower limit value is set to the first temperature lower limit value; When the actual gear position is the second gear position, the anti-frost temperature upper limit value is set to the second temperature upper limit value, and the anti-frost temperature lower limit value is set to the second temperature lower limit value; Among them, the air supply volume of the second gear is smaller than the air supply volume of the first gear, the second temperature upper limit value is larger than the first temperature upper limit value; the second temperature lower limit value is smaller than or equal to the first temperature lower limit value.

5. The control method according to claim 4, It is characterized in that The first temperature upper limit value is 3°C, the first temperature lower limit value is 1°C, the second temperature upper limit value is 6°C, and the second temperature lower limit value is 1°C.

6. The control method according to claim 1, It is characterized in that Before controlling the start and stop of the air-conditioning compressor according to the temperature threshold and the compressor temperature, the method further includes: Get the initial cycle mode of the air conditioner; When the initial circulation mode is the external circulation mode, the air conditioner is controlled to cyclically switch between the internal circulation mode and the external circulation mode.

7. The control method according to claim 6, It is characterized in that Control the air conditioner to switch between internal circulation mode and external circulation mode, including: When the duration of the air conditioner being in the external circulation mode reaches a first duration threshold, controlling the air conditioner to switch to the internal circulation mode; When the duration of the air conditioner being in the internal circulation mode reaches a second duration threshold, the air conditioner is controlled to switch to the external circulation mode.

8. The control method according to claim 6, It is characterized in that Also includes: When it is determined that the user has no cooling demand, the air conditioner is adjusted to the initial circulation mode.

9. An air conditioning control device, It is characterized in that An air conditioning controller for a vehicle, the device comprising: A first acquisition module is used to acquire the actual gear position of the air conditioner blower when it is determined that the user has a cooling demand; A first adjustment module, used for setting an anti-frost temperature threshold of an air conditioner evaporator according to the actual gear position; The control module is used to control the start and stop of the air-conditioning compressor according to the anti-frost temperature threshold and the actual temperature of the evaporator surface.

10. A vehicle comprising an air conditioning system, It is characterized in that The vehicle further includes the air conditioning control device as claimed in claim 9.

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