An air conditioner control method and device, storage medium, electronic device, and vehicle

Abstract

The application provides an air conditioner control method and device, a storage medium, an electronic device and a vehicle, and is applied to an air conditioner controller of the vehicle. According to the method provided by the application, the anti-frosting temperature threshold is dynamically adjusted according to the actual gear of the air blower, so that the air conditioner can neither frost nor reduce the start-stop frequency of the compressor, and the problem that when the existing vehicle-mounted air conditioner is cooled under low heat load, the noise is easily formed due to the frequent suction / disconnection of the electromagnetic clutch of the compressor, the engine is impacted, the driving experience is affected, and the service life of the electromagnetic clutch is reduced can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to an air conditioning control method, device, storage medium, electronic device, and vehicle. Background Technology

[0002] Currently, most vehicles are equipped with in-vehicle air conditioning with a fixed displacement compressor, which can meet the temperature regulation needs of drivers and passengers.

[0003] However, when existing vehicle air conditioners are cooling down under low to medium heat loads, the compressor electromagnetic clutch is prone to frequent engagement and disengagement. This not only generates significant noise and impacts the engine, affecting the driving experience, but also leads to accelerated wear of the drive disc and reduces the lifespan of the electromagnetic clutch. Summary of the Invention

[0004] In view of this, the present invention aims to provide an air conditioning control method, device, storage medium, electronic device and vehicle to solve the problem that when cooling under low heat load in existing vehicle air conditioning systems, the compressor electromagnetic clutch needs to be frequently engaged / disengaged, which not only easily affects the driving experience by generating noise and impacting the engine, but also leads to a reduction in the lifespan of the electromagnetic clutch.

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

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

[0007] If it is determined that the user has a cooling need, obtain the actual setting of the air conditioner blower.

[0008] Based on the actual gear position, set the anti-frost temperature threshold for the air conditioner evaporator;

[0009] The start and stop of the air conditioning compressor are controlled based on the anti-frost temperature threshold and the actual temperature of the evaporator surface.

[0010] Furthermore, in the air conditioning control method, the circuit board of the air conditioning controller is provided with pins, which are connected to the negative terminal of the blower motor and are used to detect the voltage between the negative terminal of the blower motor and ground in order to determine the blower speed.

[0011] To obtain the actual speed setting of the air conditioner blower, including:

[0012] Read the voltage value to ground of the pin and determine the actual speed of the blower based on the voltage value.

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

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

[0015] If the actual temperature is greater than the upper limit of the anti-frost temperature, the compressor is turned on.

[0016] If the actual temperature is lower than the lower limit of the anti-frost temperature, the compressor is controlled to shut down.

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

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

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

[0020] Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature.

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

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

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

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

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

[0026] If the air conditioner remains in external circulation mode for a certain period of time, the system will switch the air conditioner to internal circulation mode.

[0027] If the air conditioner remains in internal circulation mode for a duration that reaches the second duration threshold, the air conditioner will be switched to external circulation mode.

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

[0029] If it is determined that the user has no need for cooling, 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, the device comprising:

[0031] The first acquisition module is used to acquire the actual speed of the air conditioner blower when it is determined that the user has a cooling need;

[0032] The first adjustment module is used to set the anti-frost temperature threshold of the 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 based on the anti-frost temperature threshold and the actual temperature of the evaporator surface.

[0034] Furthermore, in the device, the circuit board of the air conditioner controller is provided with pins, which are connected to the negative terminal of the blower motor and are used to detect the voltage between the negative terminal of the blower motor and ground in order to determine the blower speed.

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

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

[0037] The control module includes:

[0038] The first control unit is used to control the compressor to start when the actual temperature is greater than the upper limit of the anti-frost temperature.

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

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

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

[0042] The second setting unit is used to set the upper limit of the anti-frost temperature to the upper limit of the second temperature when the actual gear is the second gear, and to set the lower limit of the anti-frost temperature to the lower limit of the second temperature.

[0043] Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature.

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

[0045] Furthermore, the device further includes:

[0046] The 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 based on the temperature threshold and the compressor temperature.

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

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

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

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

[0051] Furthermore, the device further 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 need.

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

[0054] If a user has a cooling need, the system obtains the actual setting of the air conditioner blower. Based on this setting, it sets a frost prevention temperature threshold for the air conditioner evaporator. Then, based on this frost prevention temperature threshold and the actual temperature of the evaporator surface, it controls the start and stop of the air conditioner compressor. Because the frost prevention temperature threshold is dynamically adjusted based on the actual blower setting, the air conditioner avoids frost formation and reduces the frequency of compressor start-stop. This effectively solves the problem of existing vehicle air conditioners, where frequent engagement / disengagement of the compressor's electromagnetic clutch during cooling under low heat loads generates noise, impacts the engine, affects the driving experience, and reduces the lifespan 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 executed as described above in the air conditioning control method.

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

[0057] Processor, adapted to implement various instructions; and

[0058] A storage medium suitable for storing multiple instructions, which are suitable for being loaded by a processor and executed as described above in the air conditioning control method.

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

[0060] The storage medium, electronic device, and vehicle described above have the same advantages over the prior art as the aforementioned air conditioning control method and device, and will not be repeated here. Attached Figure Description

[0061] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0062] Figure 1 This is a schematic diagram of the air conditioning control method provided in an embodiment of the present invention;

[0063] Figure 2 This is a schematic diagram of an air conditioning system circuit provided in an embodiment of the present invention;

[0064] Figure 3 This is a graph showing the relationship between the compressor status and the evaporator surface temperature when the blower is at its high setting in an embodiment of the present invention.

[0065] Figure 4 This is a graph showing the relationship between the compressor status and the evaporator surface temperature when the blower is at a low speed in an embodiment of the present invention.

[0066] Figure 5 This 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 charging control device proposed in an embodiment of the present invention. Detailed Implementation

[0068] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0069] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0070] Please see Figure 1 The diagram shows a schematic flow chart of an air conditioning control method provided by an embodiment of the present invention. The method is applied to the air conditioning controller of a vehicle and includes steps S100 to S300.

[0071] In this embodiment of the invention, the vehicle includes an air conditioning system, such as... Figure 2 As shown, the air conditioning system includes the aforementioned air conditioning controller 10. The air conditioning controller 10 is electrically connected to the compressor electromagnetic clutch, the blower switch 11, the hot and cold air damper motor 12, the mode servo motor 13, the internal and external circulation damper motor 14, and the evaporator surface temperature sensor 15. The compressor electromagnetic clutch is used to control the start and stop of the air conditioning compressor. The blower switch 11 is used to control the blower to deliver air to be cooled to the evaporator at different speeds. The hot and cold air damper motor 12 is used to set the interior temperature. The mode servo motor 13 is used to adjust the air conditioning air outlet mode. The internal and external circulation damper motor 14 is used to switch and adjust the air conditioning circulation mode, which includes internal circulation and external circulation.

[0072] Step S100: If it is determined that the user has a cooling need, obtain the actual speed of the air conditioner blower.

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

[0074] In practical applications, because the air conditioner controller is electrically connected to the blower, the blower's speed setting can be determined.

[0075] The speed of the blower can be automatically controlled by the air conditioning controller according to the program, or it can be manually selected and controlled by the user.

[0076] Alternatively, in one implementation, please refer to Figure 2 The circuit board of the air conditioner controller is provided with pin A5, which is connected to the negative terminal of the blower motor and is used to detect the voltage of the negative terminal of the blower motor to ground in order to determine the blower speed.

[0077] To obtain the actual speed setting of the air conditioner blower, including:

[0078] Read the voltage value to ground of pin A5, and determine the actual speed of the blower based on the voltage value.

[0079] In this implementation, such as Figure 2 As shown, each position of the blower switch 11 is connected in series with a speed-regulating resistor 16 of different resistance values ​​and then connected to the negative terminal of the blower motor 17. The blower switch 11 is also connected to the negative terminal of the power supply. Therefore, when the blower is in different positions, the resistance value of the speed-regulating resistor connected to the circuit is different, and the voltage of the negative terminal of the blower motor 17 to ground is also different. The correspondence between the voltage of the negative terminal of the blower motor to ground and the blower position is determined in advance. By detecting the voltage of the negative terminal of the blower motor to ground and the above correspondence, the air conditioning controller can determine the actual position of the blower.

[0080] Since pin A5 is located on the circuit board of the air conditioner controller 10, and the blower switch 11 is also fixed on the circuit board, and the casing of the blower switch 11 is grounded, the air conditioner controller can easily collect the voltage of pin A5 to ground as the negative voltage of the blower motor 17 to ground, and thus determine the actual speed of the blower.

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

[0082] In step S200 above, when the blower is at a low speed, the airflow into the evaporator is small, and the surface temperature of the evaporator drops to the frosting temperature quickly, forcing the compressor electromagnetic clutch to disengage. Then, the evaporator surface will quickly rise back to the compressor starting temperature, forcing the electromagnetic clutch to re-engage. This results in the electromagnetic clutch needing to engage / disengage at a high frequency. When the blower is at a high speed, the airflow into the evaporator is large, and the surface temperature of the evaporator drops to the frosting temperature threshold more slowly, requiring the air conditioning compressor electromagnetic clutch to disengage. Then, the evaporator surface needs a longer time to quickly rise back to the compressor starting temperature before the electromagnetic clutch needs to re-engage. Therefore, by dynamically setting different anti-frost temperature thresholds at different blower speeds, the evaporator surface temperature can be reduced to the frosting temperature relatively slowly when the compressor is on, regardless of the blower speed. When the compressor is off, the evaporator surface will take a longer time to rise back to the compressor start-up temperature. This extends the compressor's single-cycle operating time, reduces the frequency of electromagnetic clutch engagement and disengagement, and effectively alleviates the noise, engine impact, and other adverse driving experience caused by frequent engagement and disengagement of the compressor's electromagnetic clutch when cooling under low-heat loads in the vehicle air conditioner, thus 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 step S300 above, the temperature of the evaporator surface is continuously acquired as the actual temperature. Then, based on the anti-frost temperature threshold determined in step S200, when it is determined that the evaporator is about to frost, the electromagnetic clutch of the compressor is controlled to disengage, 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 determined that the evaporator has escaped the frosting temperature state, the electromagnetic clutch of the compressor is controlled to engage, so that the compressor is turned on and the cooling of the vehicle interior continues.

[0085] Compared with existing technologies, 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 speed of the blower, the air conditioner will not frost and the frequency of compressor start-stop can be reduced. This can effectively solve the problem that the compressor electromagnetic clutch is prone to frequent engagement / disengagement when cooling under low heat load in existing vehicle air conditioners.

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

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

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

[0090] In this step, when the actual temperature of the evaporator surface is greater than the upper limit of the anti-frosting temperature, it means that the evaporator has gotten rid of the frosting state. Since the user still has a need for cooling, the electromagnetic clutch of the compressor is engaged, so that the compressor is turned on to continue cooling the interior of the vehicle.

[0091] Step S302: If the actual temperature is lower than the lower limit of the anti-frost temperature, control the compressor to shut down.

[0092] In this step, when the actual temperature of the evaporator surface is lower than the aforementioned lower limit of the anti-frost temperature, it indicates that the evaporator is about to enter the frosting state. In order to prevent the evaporator from frosting, the electromagnetic clutch of the compressor is disengaged, so that the compressor is turned off and the hot air delivered by the blower is used to heat the surface of the evaporator.

[0093] In this embodiment, because there is a certain temperature difference between the upper limit of the anti-frost temperature and the lower limit of the anti-frost temperature, the compressor is controlled to open when the actual temperature of the evaporator surface is greater than the upper limit of the anti-frost temperature and to close when the actual temperature is less than the lower limit of the anti-frost temperature. When the actual temperature of the evaporator surface is greater than or equal to the lower limit of the anti-frost temperature and less than or equal to the upper limit of the anti-frost temperature, the compressor is controlled to maintain its current state. That is, as long as the actual temperature of the evaporator surface is within the above temperature range, there is no need to adjust the opening and closing state of the electromagnetic clutch of the compressor in the evaporator, which can reduce the opening and closing frequency of the electromagnetic clutch to a certain extent.

[0094] Optionally, in one embodiment, step S102 includes steps S201 to S202:

[0095] Step S201: When the actual gear is the first gear, set the upper limit of the anti-frost temperature to the first upper limit of the temperature, and set the lower limit of the anti-frost temperature to the first lower limit of the temperature.

[0096] Step S202: When the actual gear is the second gear, set the upper limit of the anti-frost temperature to the second upper limit value, and set the lower limit of the anti-frost temperature to the second lower limit value;

[0097] Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature.

[0098] In this embodiment, a higher upper limit for the anti-frost temperature is set when the blower is in a low airflow setting, and a lower upper limit for the anti-frost temperature is set when the blower is in a high airflow setting. The lower limit for the anti-frost temperature when the blower is in a low airflow setting is not higher than the lower limit for the anti-frost temperature when the blower is in a high airflow setting. That is, when the blower is in a low airflow setting, 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. This ensures that when the blower is in a low airflow setting, the evaporator surface temperature will not drop to the frosting temperature too quickly due to the smaller amount of air supplied by the blower. This 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, if the blower speed settings include speeds one, two, three, and four with air volume increasing from small to large, the first speed setting can be speed three or four, and the second speed setting can be speed one or two.

[0100] The specific values ​​of the second upper temperature limit, the first upper temperature limit, the second lower temperature limit, and the first lower temperature limit can be determined based on the actual vehicle.

[0101] Optionally, in one specific embodiment, the first upper temperature limit is 3°C, the first lower temperature limit is 1°C, the second upper temperature limit is 6°C, and the second lower temperature limit is 1°C. By setting the above, the opening and closing frequency of the compressor electromagnetic clutch can be significantly reduced at low speeds.

[0102] Please see Figure 3 The diagram illustrates the relationship between the compressor status and the evaporator surface temperature when the blower is at its high setting, according to an embodiment of the present invention. Figure 3 As shown, the relationship between compressor status and evaporator surface temperature when the blower is in speed settings three or four. Figure 3 As shown: the compressor is in the open state when the temperature of the evaporator surface is greater than 3°C, and in the closed state when the temperature of the evaporator surface is less than 1°C.

[0103] Please see Figure 4 The diagram illustrates the relationship between the compressor status and the evaporator surface temperature when the blower is at a low speed, according to an embodiment of the present invention. Figure 4 As shown, when the blower is in the first or second gear, the compressor turns on when the temperature on the evaporator surface is greater than 6°C, and turns off when the temperature on the evaporator surface is less than 1°C.

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

[0105] Step S104: Obtain the initial cycle mode of the air conditioner.

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

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

[0108] In step S105, when the air conditioner is detected to be in external circulation mode, the user tends to ensure good air quality inside the vehicle. However, the user also has a need for cooling. In external circulation mode, the air conditioner's cooling effect is poor, the air conditioning system pressure is high, the compressor load is high, and the engine power consumption is high, resulting in a decrease in the vehicle's power performance. Moreover, the compressor needs to work under high pressure for a long time, which will lead to an increased failure rate. Therefore, controlling the air conditioner to switch between internal circulation mode and external circulation mode can meet the user's need for good air quality inside the vehicle, ensure the air conditioning cooling effect, avoid the air conditioning system being in a high-pressure state continuously, reduce engine power consumption, and effectively improve the vehicle's power performance.

[0109] Optionally, in step S105 above, when the air conditioner is detected to be in external circulation mode, if the user does not switch the air conditioner to internal circulation mode within a preset time, the air conditioner controller will then execute the above-mentioned step of controlling the air conditioner to cycle between internal and external circulation modes through the background program, so that the user can determine the final circulation mode and give the user a sense of participation. For example, the preset time can be 10s, 20s, 30s, 40s, or 50s.

[0110] In this embodiment, when the air conditioner is detected to be in recirculation mode, the MCU does not adjust the air conditioner recirculation mode, but directly executes the above step S103.

[0111] Optionally, in one specific embodiment, controlling the air conditioner to cycle between internal circulation mode and external circulation mode includes steps S501 to S502:

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

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

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

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

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

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

[0118] Step S106: If it is determined that the user has no cooling needs, adjust the air conditioner to the initial circulation mode.

[0119] In this implementation, when the user presses the AC button, it indicates that the user has no cooling needs, meaning the compressor no longer needs to work. Therefore, the air conditioner is adjusted to the air conditioning circulation mode when the AC button is turned on, which is the initial circulation mode recorded above, to match the user's usage habits and settings preferences, providing convenience for the user.

[0120] In practical applications, please refer to Figure 5 The diagram illustrates the execution logic 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 need, and then the process proceeds to steps S512 and S516.

[0122] In step S512, the MCU detects whether the air conditioner is currently in recirculation mode and records the current state M1. If yes, the current setting is maintained; otherwise, it waits for 30 seconds before proceeding to step S513.

[0123] In step S513, it is determined whether the user has switched the loop state to the inner loop. If yes, proceed to step S514; otherwise, proceed to step S515.

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

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

[0126] In step S516, the MCU continuously detects the speed of the blower and determines whether it is in the high speed of 3 or 4. If yes, proceed to step S517; otherwise, proceed to step S522.

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

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

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

[0130] In step S520, the MCU controls the compressor to shut down to prevent the evaporator from frosting.

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

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

[0133] In step S523, the MCU controls the compressor to shut down to prevent the evaporator from frosting.

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

[0135] In step S525, by detecting whether the user has disconnected the AC button, it is determined whether the user has no need for cooling. If yes, proceed to step S526; otherwise, continue to execute the above step S511.

[0136] In step S526, the MCU controls the compressor to shut down via the compressor's electromagnetic clutch and adjusts the circulating damper to position M1 to restore the initial circulation state.

[0137] Another object of the present invention is to provide an air conditioning control device, wherein it is applied to an air conditioning controller for a vehicle, wherein, please refer to Figure 6 , Figure 6 A schematic diagram of an air conditioning control device according to an embodiment of the present invention is shown. The device includes:

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

[0139] The first adjustment module 62 is used to set the anti-frost temperature threshold of the 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 based on the anti-frost temperature threshold and the actual temperature of the evaporator surface.

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

[0142] Optionally, in the device, the circuit board of the air conditioner controller is provided with pins, which are connected to the negative terminal of the blower motor and used to detect the voltage between the negative terminal of the blower motor and ground in order to determine the blower speed.

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

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

[0145] Control module 63 includes:

[0146] The first control unit is used to control the compressor to start when the actual temperature is greater than the upper limit of the anti-frost temperature.

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

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

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

[0150] The second setting unit is used to set the upper limit of the anti-frost temperature to the upper limit of the second temperature when the actual gear is the second gear, and to set the lower limit of the anti-frost temperature to the lower limit of the second temperature.

[0151] Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature.

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

[0153] Optionally, the device further includes:

[0154] The 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 based on the temperature threshold and the compressor temperature.

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

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

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

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

[0159] Optionally, the device further includes:

[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 needs.

[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 executed as described above in the air conditioning control method.

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

[0163] Processor, adapted to implement various instructions; and

[0164] A storage medium suitable for storing multiple instructions, said instructions being suitable for being loaded by a processor and executed as described above in the air conditioning control method.

[0165] Another object of the present invention is to provide a vehicle including an air conditioning system, wherein the vehicle further includes an air conditioning control device as described above.

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

[0167] In summary, the air conditioning control method, device, storage medium, electronic equipment, and vehicle provided in this application, upon determining that a user has a cooling need, obtain the actual setting of the air conditioning blower; based on the actual setting, set an anti-frost temperature threshold for the air conditioning evaporator; and control the start and stop of the air conditioning compressor based on the anti-frost temperature threshold and the actual temperature of the evaporator surface. Because the anti-frost temperature threshold is dynamically adjusted based on the actual setting of the blower, the air conditioning will not frost and the frequency of compressor start and stop will be reduced. This effectively solves the problem that existing vehicle air conditioning systems, when cooling under low heat loads, are prone to noise and engine impact due to frequent engagement / disengagement of the compressor's electromagnetic clutch, which affects the driving experience and reduces the lifespan of the electromagnetic clutch.

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

[0169] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products 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.

[0170] In a typical configuration, the computer device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory. Memory may include non-persistent memory in computer-readable media, random access memory (RAM), and / or non-volatile memory such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media. Computer-readable media includes both permanent and non-persistent, removable and non-removable media that can store information by any method or technology. 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 technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transfer medium that can be used to store information accessible by a computing device. As defined in this article, computer-readable media do not include transient media, such as modulated data signals and carrier waves.

[0171] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0172] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The 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 equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0174] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0175] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0176] The present invention has provided a detailed description of an air conditioning control method, device, storage medium, electronic device, and vehicle. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An air conditioning control method, characterized in that, The method, applied to an air conditioning controller for a vehicle, includes: If it is determined that the user has a cooling need, obtain the actual setting of the air conditioner blower. Based on the actual gear position, set the anti-frost temperature threshold for the air conditioner evaporator; The start and stop of the air conditioning compressor are controlled based on the anti-frost temperature threshold and the actual temperature of the evaporator surface; The anti-frost temperature threshold includes an upper limit value for anti-frost temperature and a lower limit value for anti-frost temperature, wherein the upper limit value for anti-frost temperature is greater than the lower limit value for anti-frost temperature; Based on the actual gear setting, the anti-frost temperature threshold for the air conditioner evaporator is set, including: When the actual gear is the first gear, the upper limit of the anti-frost temperature is set to the first upper temperature value, and the lower limit of the anti-frost temperature is set to the first lower temperature value; When the actual gear is the second gear, the upper limit of the anti-frost temperature is set to the second upper temperature value, and the lower limit of the anti-frost temperature is set to the second lower temperature value; Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature. The first upper temperature limit is 3℃, the first lower temperature limit is 1℃, the second upper temperature limit is 6℃, and the second lower temperature limit is 1℃.

2. The control method according to claim 1, characterized in that, The air conditioner controller has pins on its circuit board. These pins are connected to the negative terminal of the blower motor and are used to detect the voltage between the negative terminal of the blower motor and ground in order to determine the blower speed. To obtain the actual speed setting of the air conditioner blower, including: Read the voltage value to ground of the pin and determine the actual speed of the blower based on the voltage value.

3. The control method according to claim 1, characterized in that, Based on the anti-frost temperature threshold and the actual temperature of the evaporator surface, the air conditioning compressor is controlled to start and stop, including: If the actual temperature is greater than the upper limit of the anti-frost temperature, the compressor is turned on. If the actual temperature is lower than the lower limit of the anti-frost temperature, the compressor is controlled to shut down.

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

5. The control method according to claim 4, characterized in that, Controlling the air conditioner to switch between internal and external circulation modes includes: If the air conditioner remains in external circulation mode for a certain period of time, the system will switch the air conditioner to internal circulation mode. If the air conditioner remains in internal circulation mode for a duration that reaches the second duration threshold, the air conditioner will be switched to external circulation mode.

6. The control method according to claim 4, characterized in that, Also includes: If it is determined that the user has no need for cooling, the air conditioner is adjusted to the initial circulation mode.

7. An air conditioning control device, characterized in that, An air conditioning controller for use in vehicles, the device comprising: The first acquisition module is used to acquire the actual speed of the air conditioner blower when it is determined that the user has a cooling need; The first adjustment module is used to set the anti-frost temperature threshold of the air conditioner evaporator according to the actual gear position. The control module is used to control the start and stop of the air conditioner compressor based on the anti-frost temperature threshold and the actual temperature of the evaporator surface; The anti-frost temperature threshold includes an upper limit value for anti-frost temperature and a lower limit value for anti-frost temperature, wherein the upper limit value for anti-frost temperature is greater than the lower limit value for anti-frost temperature; The first adjustment module includes: The first setting unit is configured to, when the actual gear is the first gear, set the upper limit of the anti-frost temperature to a first upper limit value and set the lower limit of the anti-frost temperature to a first lower limit value; The second setting unit is used to set the upper limit of the anti-frost temperature to the upper limit of the second temperature when the actual gear is the second gear, and to set the lower limit of the anti-frost temperature to the lower limit of the second temperature. Wherein, the air volume of the second setting is less than that of the first setting, the upper limit of the second temperature is greater than that of the first temperature, and the lower limit of the second temperature is less than or equal to that of the first temperature. The first upper temperature limit is 3℃, the first lower temperature limit is 1℃, the second upper temperature limit is 6℃, and the second lower temperature limit is 1℃.

8. A vehicle, said vehicle including an air conditioning system, characterized in that, The vehicle also includes the air conditioning control device as described in claim 7.

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