Air conditioning energy saving control method, device, equipment and storage medium

Abstract

The present application discloses an air conditioning energy-saving control method, device, equipment and storage medium, which relates to the field of air conditioning control technology. The air conditioning energy-saving control method includes: when obtaining the air conditioning energy-saving control of the air conditioning control panel, detecting the working status of the passenger compartment and the battery; if the working status of the passenger compartment and the battery is normal operation, performing air conditioning energy-saving control according to the vehicle status; if the working status of the passenger compartment and the battery is not operating, exiting the air conditioning energy-saving control. The present application achieves power saving without increasing additional costs by adjusting the response and control accuracy of the air conditioning and thermal management system of pure electric vehicles, thereby increasing the full-charge range of electric vehicles.

Description

Technical Field

[0001] The present application relates to the field of air conditioning control technology, and in particular to air conditioning energy-saving control methods, devices, equipment and storage media. Background Art

[0002] In actual use, the energy consumption of the air-conditioning system has a significant impact on the range of electric vehicles, especially in high temperature environments. The frequency of air-conditioning use increases, resulting in accelerated battery consumption, thereby reducing the actual range of electric vehicles.

[0003] Currently, pure electric vehicle (BEV) air conditioning systems typically utilize a simple on / off control mode, directly adjusting the air conditioning temperature and air speed based on the occupants' comfort needs. While this control method is simple to operate, it lacks precise management of the balance between energy consumption and comfort. In some cases, in pursuit of rapid cooling, the air conditioning system may operate in a high-energy consumption mode, which not only shortens the EV's range but also increases energy waste.

[0004] In hot environments, the air conditioning system may operate at high power for extended periods to quickly cool the interior, leading to rapid battery drain. Furthermore, simple control schemes fail to dynamically adjust to the actual temperature requirements of the battery and passenger compartment, resulting in the air conditioning system failing to provide comfort and maximize energy savings in certain situations. Therefore, achieving refined energy-saving control of air conditioning systems has become a pressing issue. Summary of the Invention

[0005] The present application aims to provide an air conditioning energy-saving control method, apparatus, device, and storage medium, aiming to solve the technical problem of how to achieve refined energy-saving control of air conditioning systems. To achieve the above-mentioned purpose, the present application proposes an air conditioning energy-saving control method, which is applied to an automotive air conditioner, the automotive air conditioner comprising an outdoor heat exchanger, a compressor, a four-way valve, a passenger compartment refrigeration circuit, and a battery refrigeration circuit. The passenger compartment refrigeration circuit comprises a passenger compartment electronic expansion valve and an evaporator, and the battery refrigeration circuit comprises a battery electronic expansion valve, a water pump, a heat exchanger, and a battery. The method comprises:

[0006] When obtaining the air conditioning energy saving control of the air conditioning control panel, detect the working status of the evaporator and battery;

[0007] If the evaporator and the battery are in normal operation, the air conditioning energy saving control is performed according to the vehicle state;

[0008] If the working status of the evaporator and the battery is not running, the air conditioning energy-saving control is exited.

[0009] In one embodiment, the first end of the four-way valve and the second end of the four-way valve are respectively connected in series with the compressor, the passenger compartment refrigeration circuit and the battery refrigeration circuit are connected in parallel via the third end of the four-way valve and the fourth end of the four-way valve, the passenger compartment electronic expansion valve is connected in series with the evaporator, the battery electronic expansion valve is connected in series with the plate heat exchanger, and the heat exchanger is connected in series with the battery;

[0010] If the evaporator and the battery are in normal operation, the step of performing air conditioning energy saving control according to the vehicle state includes:

[0011] Get the current battery temperature;

[0012] If the current battery temperature is greater than or equal to a preset battery temperature threshold, closing the passenger compartment electronic expansion valve and opening the battery electronic expansion valve to perform battery energy-saving and heat dissipation control;

[0013] If the current battery temperature is lower than the preset battery temperature threshold, the passenger compartment electronic expansion valve is opened, and the battery electronic expansion valve is closed to perform passenger compartment energy-saving and heat dissipation control.

[0014] In one embodiment, performing battery energy-saving and heat dissipation control includes:

[0015] Get battery control temperature and battery temperature table;

[0016] querying the battery temperature table according to the current battery temperature to obtain a battery offset temperature, wherein the battery temperature table includes a mapping relationship between the current battery temperature and the battery offset temperature;

[0017] A target battery temperature is obtained based on the battery control temperature and the battery offset temperature, and battery energy-saving and heat dissipation control is performed according to the target battery temperature.

[0018] In one embodiment, the passenger compartment energy-saving and heat dissipation control includes:

[0019] Get the air conditioner operating conditions;

[0020] When the air conditioning operation mode is manual, a first target evaporator temperature is obtained according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature;

[0021] When the air-conditioning operating condition is the automatic condition, a second target evaporator temperature is obtained according to the evaporator control temperature and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the second target evaporator temperature.

[0022] In one embodiment, a first target evaporator temperature is obtained based on the evaporator control temperature, the target circulation position, and the preset temperature offset value. Energy-saving heat dissipation control for the passenger compartment is performed based on the first target evaporator temperature, including:

[0023] Get the cycle position table, relative humidity and window temperature and dew point temperature;

[0024] determining a fogging risk level based on the vehicle window temperature and the dew point temperature;

[0025] querying the circulation position table according to the relative humidity to obtain a corresponding fogging risk level threshold;

[0026] When the fogging risk level is less than or equal to the fogging risk level threshold, obtaining a target circulation position;

[0027] A first target evaporator temperature is obtained according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature.

[0028] In one embodiment, a second target evaporator temperature is obtained based on the evaporator control temperature and the preset temperature offset value, and passenger compartment energy-saving heat dissipation control is performed based on the second target evaporator temperature, including:

[0029] Get the air volume level, current interior temperature, and interior temperature offset table;

[0030] obtaining a second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value;

[0031] Obtaining a target air volume level according to the air volume level, and querying the in-vehicle temperature offset table to obtain an in-vehicle temperature offset value;

[0032] Obtaining a target vehicle interior temperature according to the current vehicle interior temperature and the vehicle interior temperature offset value;

[0033] The compressor speed is controlled according to the target vehicle interior temperature, and energy-saving and heat dissipation control of the passenger compartment is completed through the target air volume gear and the second target evaporator temperature.

[0034] In one embodiment, if the current battery temperature is less than the preset battery temperature threshold, before opening the passenger compartment electronic expansion valve and closing the battery electronic expansion valve to perform passenger compartment energy-saving and heat dissipation control, the method further includes:

[0035] Obtaining an initial evaporator control temperature, a vehicle door and window status, a first preset time threshold, and a second preset time threshold;

[0036] If the state of the car door and window is open, obtaining the opening time of the car door and window;

[0037] If the vehicle door and window opening time is greater than or equal to the first preset time threshold and less than the second preset time threshold, an evaporator control temperature is obtained according to the initial evaporator control temperature, and energy-saving heat dissipation control of the passenger compartment is performed according to the evaporator control temperature;

[0038] If the vehicle door and window opening time is greater than or equal to the second preset time threshold, the compressor is turned off.

[0039] In addition, to achieve the above-mentioned purpose, the present application also proposes an air-conditioning energy-saving control device, which includes:

[0040] An acquisition module, used to detect the working status of the evaporator and the battery when acquiring the air conditioning energy-saving control of the air conditioning control panel;

[0041] A completion module is used to perform air conditioning energy saving control according to the vehicle state if the working state of the evaporator and the battery is normal operation;

[0042] The exit module is used to exit the air-conditioning energy-saving control if the working status of the evaporator and the battery is not running.

[0043] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle, which includes a car air conditioner, and the car air conditioner executes the steps of the air conditioning energy-saving control method as described above.

[0044] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by the processor, the steps of the air conditioning energy-saving control method as described above are implemented.

[0045] One or more technical solutions proposed in this application have at least the following technical effects:

[0046] When obtaining the air conditioning energy-saving control instruction from the air conditioning control panel, this application first detects the working status of the evaporator and the battery to ensure that they are in normal operating state. If the evaporator and the battery are working normally, the air conditioning energy-saving control strategy will be executed according to the current vehicle status, such as battery temperature, air conditioning operating conditions, etc. This may include adjusting the opening and closing state of the electronic expansion valve to optimize the heat dissipation efficiency of the evaporator and the battery. On the contrary, if it is detected that the evaporator and the battery are not in operation, the air conditioning energy-saving control will be exited. This application realizes dynamic adjustment of air conditioning operation according to actual needs by intelligently detecting and responding to the working status of the evaporator and the battery, thereby achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 A flowchart of the first embodiment of the air conditioning energy-saving control method of the present application is provided;

[0050] Figure 2 A flow chart of the second embodiment of the air-conditioning energy-saving control method of the present application is provided;

[0051] Figure 3 This is a schematic diagram of the specific connection relationship principle of the air conditioning energy-saving control method of this application;

[0052] Figure 4 This is a schematic diagram of the system architecture of the air conditioning energy-saving control method of this application;

[0053] Figure 5 This is a schematic diagram of the module structure of the air-conditioning energy-saving control device according to an embodiment of the present application;

[0054] Figure 6 This is a schematic diagram of the device structure of the hardware operating environment involved in the air conditioning energy-saving control method in the embodiment of the present application.

[0055] Description of Figure Numbers:

[0056] Outdoor radiator A, compressor B, passenger compartment electronic expansion valve C1, battery electronic expansion valve C2, evaporator D, heat exchanger E, battery F, water pump G, four-way valve H.

[0057] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0058] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0059] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0060] With the intensifying global energy crisis and increasingly serious environmental pollution, pure electric vehicles (BEVs), as a clean energy transportation tool, are experiencing rapid market demand and industry growth. However, the driving range of BEVs remains a key concern for both consumers and manufacturers. In practice, the energy consumption of the air conditioning system significantly impacts the vehicle's driving range. This is especially true in high-temperature environments, where increased air conditioning usage leads to accelerated battery drain, reducing the vehicle's actual driving range. Currently, BEV air conditioning systems typically employ a simple on-off control scheme, directly adjusting the air conditioning temperature and air speed based on passenger comfort requirements. While this control approach is simple to operate, it lacks precise management of the balance between energy consumption and comfort. In certain situations, the A / C system may operate in a high-energy mode to achieve rapid cooling, shortening the vehicle's driving range and increasing energy waste. In high-temperature environments, the A / C system may operate at high power for extended periods to quickly cool the interior, resulting in rapid battery drain. Furthermore, this simple control scheme fails to dynamically adjust to the actual temperature requirements of the battery and passenger compartment, resulting in the A / C system failing to provide optimal comfort and maximize energy savings in certain situations.

[0061] The main solution of the embodiment of the present application is: when obtaining the air conditioning energy-saving control instruction of the air conditioning control panel, the present application first detects the working status of the evaporator and the battery to ensure that they are in normal operating state. If the evaporator and the battery are working normally, the air conditioning energy-saving control strategy will be executed according to the current vehicle status, such as battery temperature, air conditioning operating conditions, etc. This may include adjusting the opening and closing state of the electronic expansion valve to optimize the heat dissipation efficiency of the evaporator and the battery. On the contrary, if it is detected that the evaporator and the battery are not in operation, the air conditioning energy-saving control will be exited. The present application realizes dynamic adjustment of the air conditioning operation according to actual needs by intelligently detecting and responding to the working status of the evaporator and the battery, thereby achieving energy-saving effects.

[0062] It should be noted that the execution subject of the embodiments of the present application may be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, mobile phone, etc., or an electronic device capable of performing the above functions, such as a car air conditioner. The following uses a car air conditioner as an example to illustrate this embodiment and the following embodiments.

[0063] Based on this, the embodiment of the present application provides an air conditioning energy saving control method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the air-conditioning energy-saving control method of the present application.

[0064] In this embodiment, the air conditioning energy-saving control method is applied to a vehicle air conditioner, which includes an outdoor heat exchanger, a compressor, a four-way valve, a passenger compartment refrigeration circuit, and a battery refrigeration circuit. The passenger compartment refrigeration circuit includes a passenger compartment electronic expansion valve and an evaporator. The battery refrigeration circuit includes a battery electronic expansion valve, a water pump, a heat exchanger, and a battery. The method includes steps S10 to S30:

[0065] Step S10, when acquiring the air conditioning energy-saving control of the air conditioning control panel, detecting the working status of the evaporator and the battery;

[0066] It should be noted that air conditioning energy-saving control can be a technology or method that reduces energy consumption by intelligently adjusting the air conditioning system. The goal is to reduce electric vehicle energy consumption while ensuring passenger comfort, thereby extending battery life. Specific operations can include the precise management of various air conditioning system parameters, such as temperature settings, fan speed, and compressor operating mode, as well as their coordination with other vehicle systems (such as battery thermal management). The air conditioning control panel is the user interface inside the vehicle for adjusting air conditioning system settings, allowing the driver and passengers to adjust temperature, fan speed, and direction as needed to achieve a comfortable in-vehicle environment. The evaporator operating status can include whether the vehicle's air conditioning system is operating and the specific operating mode (such as cooling, heating, or ventilation). It can also include the temperature setting set by the passenger and the actual temperature felt by the passenger. The battery operating status can include the battery's charge state, temperature, and whether it is powering the air conditioning system. Excessive battery temperature can affect its performance and lifespan, so it needs to be managed through the cooling system.

[0067] It is understandable that when obtaining air conditioning energy-saving control, sensors are used to monitor the working conditions of the evaporator and the battery to ensure that they are operating normally to meet the needs of reducing the power loss of electric vehicles, thereby improving the battery life.

[0068] Step S20: If the evaporator and the battery are in normal operation, air conditioning energy saving control is performed according to the vehicle state;

[0069] It should be noted that normal operation refers to both the evaporator and battery operating normally. This means the evaporator can maintain a suitable temperature as set, and the battery is within a safe operating temperature range, without overheating or overcooling, and can stably provide the vehicle's power and the energy required by the air conditioning system. Vehicle status refers to the overall operating status of the vehicle, including but not limited to battery status, such as battery charge level, temperature, and state of charge; environmental conditions, such as outside temperature, humidity, and sunlight intensity; air conditioning settings, such as passenger-set target temperature, wind speed, and direction; in-vehicle sensor data, such as temperature and humidity sensor readings, used to assess passenger comfort; and system fault status, such as whether any vehicle system faults are affecting the normal operation of the air conditioning and battery. Based on this vehicle status information, the air conditioning energy-saving control strategy can dynamically adjust the air conditioning operating mode, such as adjusting the compressor on / off, electronic expansion valve opening, and fan speed, to achieve the optimal energy efficiency ratio based on different driving conditions and passenger needs, ensuring energy conservation while maintaining passenger comfort.

[0070] It is understandable that after confirming that the evaporator and battery are in good working condition, the air-conditioning system's working mode will be intelligently adjusted based on the current vehicle conditions, such as battery temperature, vehicle speed, external ambient temperature, and air-conditioning parameters set by passengers, to optimize energy consumption, thereby reducing energy consumption while maintaining passenger comfort and extending the endurance of electric vehicles.

[0071] Step S30: If the evaporator and the battery are not in operation, exit the air conditioning energy-saving control.

[0072] It is understandable that when it is detected that the evaporator (the component responsible for cooling the air) and the battery in the vehicle are not in working condition, that is, there is no cooling demand or the battery does not need to be cooled, the air conditioning energy-saving control function will be stopped because the air conditioning system is not running at this time and no energy-saving operation is required to maintain the comfort of the passenger compartment or the optimal operating temperature of the battery.

[0073] This embodiment provides an air conditioning energy-saving control method. When obtaining the air conditioning energy-saving control instruction from the air conditioning control panel, this embodiment first detects the working status of the evaporator and the battery to ensure that they are in normal operating conditions. If the evaporator and the battery are working normally, the air conditioning energy-saving control strategy will be executed according to the current vehicle status, such as battery temperature, air conditioning operating conditions, etc. This may include adjusting the opening and closing status of the electronic expansion valve to optimize the heat dissipation efficiency of the evaporator and the battery. On the contrary, if it is detected that the evaporator and the battery are not in operation, the air conditioning energy-saving control will be exited. This embodiment realizes dynamic adjustment of air conditioning operation according to actual needs by intelligently detecting and responding to the working status of the evaporator and the battery, thereby achieving energy-saving effects.

[0074] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 2 , Figure 2 This is a flow chart of the second embodiment of the air conditioning energy-saving control method of the present application. The first end of the four-way valve and the second end of the four-way valve are respectively connected in series with the compressor, the passenger compartment refrigeration circuit and the battery refrigeration circuit are connected in parallel through the third end of the four-way valve and the fourth end of the four-way valve, the passenger compartment electronic expansion valve is connected in series with the evaporator, the battery electronic expansion valve is connected in series with the plate heat exchanger, and the heat exchanger is connected in series with the battery; the specific connection relationship principle can be seen Figure 3 , the system architecture is visible Figure 4 The step S20 of the air conditioning energy-saving control method includes steps S21 to S23:

[0075] Step S21, obtaining the current battery temperature;

[0076] It should be noted that the current battery temperature refers to the actual battery temperature at the current moment. This temperature is measured in real time by sensors in the battery management system (BMS). Battery temperature is a key parameter for assessing the battery's operating status and health, and is crucial for ensuring battery performance, safety, and lifespan. Batteries generate heat during charging and discharging, so their temperature needs to be monitored to prevent overheating, which could damage the battery or affect its performance. In the air conditioning energy-saving control method for pure electric vehicles, the current battery temperature is obtained to adjust the air conditioning and thermal management systems based on the actual battery temperature to achieve energy savings and maintain the battery within the optimal operating temperature range.

[0077] It is understandable that the current battery temperature refers to the actual temperature value of the battery measured by the temperature sensor embedded in the battery management system at a specific moment. This temperature value is very critical for monitoring the working status of the battery, ensuring battery performance and safety, and extending battery life. Because in the air-conditioning energy-saving control of electric vehicles, knowing the real-time temperature of the battery helps the system adjust the air-conditioning and thermal management strategies according to the battery temperature to optimize energy consumption and keep the battery within a suitable operating temperature range.

[0078] Step S22, if the current battery temperature is greater than or equal to a preset battery temperature threshold, closing the passenger compartment electronic expansion valve and opening the battery electronic expansion valve to perform battery energy-saving and heat dissipation control;

[0079] It should be noted that the preset battery temperature threshold can be a temperature limit set to ensure battery safety and performance. When the battery temperature reaches or exceeds this threshold, specific thermal management measures are automatically activated to control the battery temperature and prevent overheating. The passenger compartment electronic expansion valve can be an electronically controlled valve installed in the passenger compartment refrigeration circuit that controls the flow of refrigerant to the evaporator. When passenger compartment cooling is required, the expansion valve opens to allow refrigerant to flow into the evaporator, absorbing heat from the cabin and cooling the battery. When cooling is not required or battery cooling is prioritized, the expansion valve closes to reduce the flow of refrigerant to the passenger compartment. The battery electronic expansion valve can be an electronically controlled valve installed in the battery refrigeration circuit that controls the flow of refrigerant to the battery cooling system. When the battery temperature rises to a preset threshold, the battery electronic expansion valve opens, allowing refrigerant to flow through the battery cooling system to dissipate heat from the battery and maintain the battery within a safe and efficient operating temperature range.

[0080] It is understandable that the battery temperature has reached or exceeded the critical point set to ensure its safety and performance. At this time, the passenger compartment electronic expansion valve will be closed to reduce the cooling of the passenger compartment, and the battery electronic expansion valve will be opened to enhance the cooling effect of the battery, perform battery energy-saving heat dissipation control, ensure that the battery temperature is effectively controlled, thereby protecting the battery and extending its service life.

[0081] As an example, the battery energy-saving and heat dissipation control includes: obtaining a battery control temperature and a battery temperature table; querying the battery temperature table according to the current battery temperature to obtain a battery offset temperature, wherein the battery temperature table contains a mapping relationship between the current battery temperature and the battery offset temperature; obtaining a target battery temperature based on the battery control temperature and the battery offset temperature, and performing battery energy-saving and heat dissipation control according to the target battery temperature.

[0082] Among them, the battery control temperature can be the ideal operating temperature or temperature range set by the battery management system, which is intended to ensure optimal battery performance and longest life. The battery temperature table can be a predefined data table that contains the mapping relationship between different current battery temperatures and the corresponding battery offset temperatures. This table is used to adjust the control strategy based on the actual measured battery temperature. The battery offset temperature can be the deviation value from the battery control temperature calculated for the current battery temperature based on the battery temperature table. This offset value is used to adjust the target temperature to compensate for the difference between the actual temperature and the ideal control temperature. The target battery temperature can be the actual battery temperature target that should be achieved after taking into account the battery offset temperature. This target temperature is the basis for battery energy-saving and heat dissipation control. Cooling or heating measures are adjusted according to this target to ensure that the battery operates within the optimal temperature range. The battery temperature table can be shown in Table 1:

[0083] Table 1 Battery temperature table

[0084]

[0085] Specifically, obtaining the battery control temperature and battery temperature table involves obtaining the preset ideal operating temperature from the battery management system and referencing the battery temperature table to determine the correspondence between the current battery temperature and the battery offset temperature. The battery offset temperature can be the difference between the actual battery temperature and the control temperature, while the target battery temperature is the ideal temperature target calculated based on the control temperature and the offset temperature. Based on this target battery temperature, battery energy-saving and heat dissipation control is implemented, adjusting the cooling system to ensure that the battery maintains the optimal operating temperature, thereby optimizing battery performance and extending its service life.

[0086] Step S23: If the current battery temperature is lower than the preset battery temperature threshold, the passenger compartment electronic expansion valve is opened, and the battery electronic expansion valve is closed to perform passenger compartment energy-saving and heat dissipation control.

[0087] It is understandable that when the battery temperature is within a safe range, the passenger compartment electronic expansion valve will be opened to provide the cooling required for the passenger compartment, while the battery electronic expansion valve will be closed to reduce additional cooling of the battery, thereby performing passenger compartment energy-saving and heat dissipation control, aiming to optimize energy consumption and maintain passenger comfort, while avoiding unnecessary cooling of the battery to improve overall energy utilization efficiency.

[0088] As an example, if the current battery temperature is lower than the preset battery temperature threshold, the passenger compartment electronic expansion valve is opened and the battery electronic expansion valve is closed, thereby performing energy-saving and heat dissipation control for the passenger compartment. The method also includes: obtaining the initial evaporator control temperature, the vehicle door and window status, the first preset time threshold, and the second preset time threshold; if the vehicle door and window status is open, obtaining the vehicle door and window opening time; if the vehicle door and window opening time is greater than or equal to the first preset time threshold and less than the second preset time threshold, obtaining the evaporator control temperature according to the initial evaporator control temperature, and performing energy-saving and heat dissipation control for the passenger compartment according to the evaporator control temperature; if the vehicle door and window opening time is greater than or equal to the second preset time threshold, turning off the compressor.

[0089] The initial evaporator control temperature can be the evaporator's starting operating temperature set by the air conditioning system. This temperature is the ideal temperature at the evaporator outlet during the air conditioning refrigeration cycle and is used to initially control the air conditioning system's cooling performance. The vehicle's door and window status refers to whether the vehicle's doors, windows, or sunroof are open or closed. This status affects the vehicle's interior temperature maintenance and the air conditioning system's energy consumption. The first and second preset time thresholds are system-set time parameters that determine how the air conditioning system should respond to maintain energy efficiency and passenger comfort when the vehicle's doors and windows are open. The first preset time threshold may indicate the point at which the air conditioning system begins adjusting air conditioning settings after the doors and windows are opened; the second preset time threshold may indicate the point at which more aggressive energy-saving measures (such as shutting down the compressor) are implemented after the doors and windows are opened. The vehicle's door and window opening time refers to the length of time that has elapsed from the moment the doors and windows are opened to the current moment. The compressor is a key component in the air conditioning refrigeration system, responsible for compressing the refrigerant, thereby driving the refrigeration cycle. Shutting down the compressor means that the air conditioning system stops cooling, saving energy. The evaporator control temperature can be the ideal temperature at the evaporator outlet of the air conditioning system, which directly affects the cooling performance. The target circulation position may be a target position set by the air conditioning system between the internal and external circulation modes, affecting the circulation and temperature regulation of the air in the vehicle.

[0090] Specifically, the system first obtains the initial evaporator control temperature and a preset time threshold, and then monitors the open and closed status of the vehicle's doors and windows. If the doors and windows are open, the time they are open is recorded. When this time reaches or exceeds the first preset time threshold but is less than the second preset time threshold, the actual evaporator control temperature is adjusted based on the initial evaporator control temperature, and energy-saving heat dissipation control for the passenger compartment is performed based on this adjusted temperature. If the door and window open time reaches or exceeds the second preset time threshold, a more energy-efficient measure is taken, namely shutting down the compressor to reduce energy consumption. This approach aims to intelligently manage the air conditioning system to adapt to vehicle usage, improve energy efficiency, and ensure passenger comfort.

[0091] As an example, energy-saving and heat dissipation control of the passenger compartment is performed, including: obtaining the air-conditioning operating condition; when the air-conditioning operating condition is a manual condition, obtaining a first target evaporator temperature according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and performing energy-saving and heat dissipation control of the passenger compartment according to the first target evaporator temperature; when the air-conditioning operating condition is an automatic condition, obtaining a second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value, and performing energy-saving and heat dissipation control of the passenger compartment according to the second target evaporator temperature.

[0092] Among them, the air-conditioning operating conditions can be different modes in which the air-conditioning system operates according to user settings or automatic control logic, including manual conditions and automatic conditions. Manual conditions can be that the user directly sets parameters such as temperature and wind speed, and the air-conditioning system operates according to these set values ​​without automatic adjustment. Automatic conditions can be that the air-conditioning system automatically adjusts the operating parameters according to parameters such as the in-car temperature sensor and set temperature to maintain the in-car temperature within the comfortable range set by the user. The preset temperature offset value can be a deviation value from the actual measured temperature set for energy saving or comfort adjustment. The first target evaporator temperature can be the ideal evaporator temperature calculated according to the evaporator control temperature, target circulation position and preset temperature offset value under manual conditions, which is used to guide the energy-saving heat dissipation control of the passenger compartment. The second target evaporator temperature can be the ideal evaporator temperature calculated only according to the evaporator control temperature and the preset temperature offset value under automatic conditions, which is also used to guide the energy-saving heat dissipation control of the passenger compartment. The specific calculation formula for the first target evaporator temperature can be:

[0093]

[0094] The specific calculation formula for the second target evaporator temperature can be:

[0095]

[0096] in, is the first target evaporator temperature, To control the temperature of the evaporator, is the target cycle position, Preset temperature offset value for inner loop Preset temperature offset value for external loop.

[0097] Specifically, in manual mode, the user directly controls the air conditioning temperature and air speed. The system calculates a first target evaporator temperature based on the user-set evaporator control temperature, target circulation position (i.e., the set ratio of internal and external circulation), and a preset temperature offset value. This target evaporator temperature is then used to control passenger compartment cooling for energy savings. In automatic mode, the air conditioning system automatically calculates a second target evaporator temperature based on the evaporator control temperature and the preset temperature offset value, and adjusts passenger compartment cooling accordingly to achieve energy savings and maintain passenger comfort.

[0098] As an example, a first target evaporator temperature is obtained according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature, including: obtaining a circulation position table, relative humidity, window temperature and dew point temperature; determining the fogging risk level based on the window temperature and the dew point temperature; querying the circulation position table according to the relative humidity to obtain the corresponding fogging risk level threshold; obtaining the target circulation position when the fogging risk level is less than or equal to the fogging risk level threshold; obtaining the first target evaporator temperature according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature.

[0099] The circulation position table can be a pre-set data table that guides the air conditioning system on how to adjust its circulation pattern to maintain a comfortable and safe interior environment based on the relationship between the system's internal and external circulation ratios and environmental conditions. Relative humidity, which is the ratio of the water vapor content in the air inside the vehicle to the maximum water vapor content the air can hold at that temperature, is a key factor influencing whether the vehicle interior fogs up. Window temperature, which is the actual temperature of the interior and exterior glass surfaces, is used together with the dew point temperature (the temperature at which water vapor in the air condenses into dewdrops) to determine the risk of window fogging. The fogging risk level assesses the likelihood of window fogging based on the difference between the window temperature and the dew point temperature, with lower levels indicating a greater risk of fogging. The fogging risk level threshold is a critical value determined based on the circulation position table and relative humidity, used to determine the upper limit of the permissible fogging risk level under current humidity conditions. When the fogging risk level reaches the exit threshold, the target circulation position is re-established. The target circulation position is the set position for the air conditioning circulation pattern, determined based on the fogging risk level and the fogging risk threshold, used to adjust the air circulation inside the vehicle to prevent window fogging. The cycle position table can be shown as Table 2:

[0100] Table 2 Cycle position table

[0101]

[0102] Specifically, the system first obtains data such as the circulation position table, relative humidity, and window temperature and dew point temperature. The difference between the window temperature and the dew point temperature is used to determine the fogging risk level, which reflects the likelihood of fog forming on the window glass. Next, the corresponding fogging risk level threshold is searched in the circulation position table based on the relative humidity. This threshold is the maximum allowable fogging risk level. If the current fogging risk level is lower than or equal to this threshold, a target circulation position is determined. This is the ratio of internal and external circulation that the air conditioning system should set to keep the windows clear. Finally, the first target evaporator temperature is calculated based on the evaporator control temperature, the target circulation position, and the preset temperature offset value. Energy-saving heat dissipation control of the passenger compartment is then performed accordingly to ensure passenger comfort while saving energy.

[0103] As an example, a second target evaporator temperature is obtained according to the evaporator control temperature and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the second target evaporator temperature, including: obtaining the air volume gear and the current vehicle interior temperature and the vehicle interior temperature offset table; obtaining the second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value; obtaining the target air volume gear according to the air volume gear, and querying the vehicle interior temperature offset table to obtain the vehicle interior temperature offset value; obtaining the target vehicle interior temperature according to the current vehicle interior temperature and the vehicle interior temperature offset value; controlling the compressor speed according to the target vehicle interior temperature, and completing the energy-saving heat dissipation control of the passenger compartment through the target air volume gear and the second target evaporator temperature.

[0104] The air volume level can be the fan speed setting for the air conditioning system, typically divided into multiple levels, allowing the user to select different air volume levels as needed. The current interior temperature can be the current interior air temperature measured in real time by the interior temperature sensor. The interior temperature offset table can be a preset data table that provides the deviation between the target interior temperature and the actual interior temperature based on the air conditioning system settings and environmental conditions. The target air volume level can be the air volume level that should be set, calculated based on the current air conditioning settings and the interior environmental conditions, to achieve optimal interior temperature control. Under energy-saving control, the air volume level can be reduced by one level to achieve the target air volume level. If the circulation mode is full interior circulation, the preset interior circulation temperature offset value can be obtained. The interior temperature offset value can be calculated based on the interior temperature offset table and the current air conditioning settings, representing the deviation between the current interior temperature and the target temperature. The target interior temperature can be the ideal interior temperature calculated based on the user's settings, the actual interior temperature, and environmental conditions, aiming to provide a comfortable passenger environment. In order to solve the problem of rapid cooling in the early stage of cooling a hot car, the temperature feedback in the car can be appropriately reduced in the early stage of cooling a hot car. The current car temperature can be controlled by setting the car temperature offset value to obtain the target car temperature, delay the surge in compressor speed in the rapid cooling stage, and thus save a certain amount of energy. The current car temperature can be offset in sections according to the collection time. The specific car temperature offset table can be shown in Table 3:

[0105] Table 3 In-car temperature deviation table

[0106]

[0107] Specifically, the system first obtains the current air volume level and interior temperature, and determines the interior temperature offset value by referring to the interior temperature offset table. It then calculates the second target evaporator temperature by combining the evaporator control temperature and the preset temperature offset value. The target air volume level is then determined based on the air volume level, and the target interior temperature is calculated using the interior temperature offset value. Finally, the compressor speed is automatically adjusted based on the target interior temperature, and energy-saving heat dissipation control in the passenger compartment is completed by combining the target air volume level and the second target evaporator temperature. This ensures passenger comfort while improving energy efficiency, demonstrating the air conditioning system's ability to respond to environmental changes and intelligently manage energy consumption in automatic mode.

[0108] This embodiment first obtains the current battery temperature to monitor the battery's thermal state in real time and ensure timely response to temperature changes. If the current battery temperature reaches or exceeds a preset threshold, the passenger compartment electronic expansion valve is closed to reduce passenger compartment cooling. The battery electronic expansion valve is simultaneously opened to enhance battery heat dissipation, optimize battery thermal management, prevent overheating, and protect battery performance. Conversely, if the battery temperature falls below the preset threshold, the passenger compartment electronic expansion valve is opened to meet passenger comfort requirements, while the battery electronic expansion valve is closed to reduce battery cooling, conserving energy and maintaining passenger compartment comfort. This embodiment intelligently controls the passenger compartment and battery electronic expansion valves to dynamically adjust the operating modes of the air conditioning and thermal management systems based on the actual battery temperature. This ensures effective heat dissipation protection for the battery at high temperatures while conserving energy at low temperatures, while also meeting passenger cabin temperature comfort requirements. This achieves the dual goals of energy-efficient heat dissipation control for both the battery and passenger compartment, optimizing both energy efficiency and the passenger experience in electric vehicles.

[0109] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the air-conditioning energy-saving control method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0110] This application also provides an air conditioning energy saving control device, please refer to Figure 5 , the air conditioning energy-saving control device includes:

[0111] The acquisition module 10 is used to detect the working status of the evaporator and the battery when acquiring the air conditioning energy-saving control of the air conditioning control panel;

[0112] Completing module 20, for performing air conditioning energy saving control according to the vehicle state if the working state of the evaporator and the battery is normal operation;

[0113] The exit module 30 is configured to exit the air-conditioning energy-saving control if the evaporator and the battery are in the non-operating state.

[0114] The air conditioner energy-saving control device provided in this application, employing the air conditioner energy-saving control method of the aforementioned embodiment, can solve the technical problem of achieving refined energy-saving control of air conditioning systems. Compared to the prior art, the air conditioner energy-saving control device provided in this application has the same beneficial effects as the air conditioner energy-saving control method of the aforementioned embodiment. Other technical features of the air conditioner energy-saving control device are the same as those disclosed in the aforementioned embodiment and are not further described here.

[0115] The present application provides an air conditioning energy-saving control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the air conditioning energy-saving control method in the above-mentioned embodiment one.

[0116] Reference below Figure 6 , which shows a schematic diagram of the structure of an air conditioner energy-saving control device suitable for implementing the embodiments of the present application. The air conditioner energy-saving control device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (such as in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 6 The air conditioning energy-saving control device shown is merely an example and should not impose any limitations on the functions and scope of use of the embodiments of the present application.

[0117] like Figure 6As shown, the air conditioner energy-saving control device may include a processing device 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 1002 or programs loaded from a storage device 1003 into a random access memory (RAM) 1004. RAM 1004 also stores various programs and data required for the operation of the air conditioner energy-saving control device. Processing device 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007, such as a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008, such as a liquid crystal display (LCD), speaker, vibrator, etc.; storage device 1003, such as a magnetic tape or hard disk; and communication device 1009. The communication device 1009 can allow the air conditioner energy-saving control device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows an air conditioner energy-saving control device with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented or provided instead.

[0118] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0119] The air conditioning energy-saving control device provided in this application, employing the air conditioning energy-saving control method of the aforementioned embodiment, can solve the technical problem of achieving refined energy-saving control of air conditioning systems. Compared to the prior art, the air conditioning energy-saving control device provided in this application has the same beneficial effects as the air conditioning energy-saving control method of the aforementioned embodiment. Other technical features of the air conditioning energy-saving control device are the same as those disclosed in the aforementioned embodiment and are not further described here.

[0120] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0121] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0122] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, a computer program) stored thereon, and the computer-readable program instructions are used to execute the air-conditioning energy-saving control method in the above-mentioned embodiment.

[0123] The computer-readable storage medium provided herein may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems, or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including, but not limited to, wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0124] The computer-readable storage medium may be included in the air-conditioning energy-saving control device; or may exist independently without being assembled into the air-conditioning energy-saving control device.

[0125] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the air-conditioning energy-saving control device, the air-conditioning energy-saving control device: when obtaining the air-conditioning energy-saving control of the air-conditioning control panel, detects the working status of the evaporator and the battery; if the working status of the evaporator and the battery is normal operation, performs air-conditioning energy-saving control according to the vehicle status; if the working status of the evaporator and the battery is not operating, exits the air-conditioning energy-saving control.

[0126] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0127] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0128] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0129] The computer-readable storage medium provided in this application stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned air conditioner energy-saving control method. This computer-readable storage medium can address the technical problem of achieving refined energy-saving control for air conditioning systems. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are similar to those of the air conditioner energy-saving control method provided in the aforementioned embodiments, and are not further elaborated here.

[0130] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An air conditioning energy-saving control method, characterized in that: The air conditioning energy-saving control method is applied to an automobile air conditioner, the automobile air conditioner includes an outdoor heat exchanger, a compressor, a four-way valve, a passenger compartment refrigeration circuit and a battery refrigeration circuit, the passenger compartment refrigeration circuit includes a passenger compartment electronic expansion valve and an evaporator, the battery refrigeration circuit includes a battery electronic expansion valve, a water pump, a heat exchanger and a battery, the first end of the four-way valve and the second end of the four-way valve are respectively connected in series with the compressor, the passenger compartment refrigeration circuit and the battery refrigeration circuit are connected in parallel through the third end of the four-way valve and the fourth end of the four-way valve, the passenger compartment electronic expansion valve is connected in series with the evaporator, the battery electronic expansion valve is connected in series with the plate heat exchanger, and the heat exchanger is connected in series with the battery, the method includes: When obtaining the air conditioning energy saving control of the air conditioning control panel, detect the working status of the evaporator and the battery; If the working state of the evaporator and the battery is normal operation, air conditioning energy saving control is performed according to the vehicle state; If the working state of the evaporator and the battery is normal operation, the step of performing air conditioning energy saving control according to the vehicle state includes: Get the current battery temperature; If the current battery temperature is greater than or equal to a preset battery temperature threshold, the passenger compartment electronic expansion valve is closed, and the battery electronic expansion valve is opened to perform battery energy-saving heat dissipation control; If the current battery temperature is lower than the preset battery temperature threshold, the passenger compartment electronic expansion valve is opened, and the battery electronic expansion valve is closed to perform energy-saving and heat dissipation control for the passenger compartment; The energy-saving and heat dissipation control of the passenger compartment includes: Get the operating conditions of the air conditioner; When the air conditioner operation condition is a manual condition, a first target evaporator temperature is obtained according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature; When the air conditioner operation condition is an automatic condition, a second target evaporator temperature is obtained according to the evaporator control temperature and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the second target evaporator temperature; If the working status of the evaporator and the battery is not in operation, the air conditioning energy-saving control is exited.

2. The method according to claim 1, characterized in that The battery energy-saving and heat dissipation control includes: Get battery control temperature and battery temperature table; querying the battery temperature table according to the current battery temperature to obtain a battery offset temperature, wherein the battery temperature table contains a mapping relationship between the current battery temperature and the battery offset temperature; A target battery temperature is obtained based on the battery control temperature and the battery offset temperature, and battery energy-saving and heat dissipation control is performed according to the target battery temperature.

3. The method according to claim 1, characterized in that The method of obtaining a first target evaporator temperature according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and performing energy-saving heat dissipation control of the passenger compartment according to the first target evaporator temperature includes: Get cycle position table, relative humidity and window temperature and dew point temperature; determining a fogging risk level based on the vehicle window temperature and the dew point temperature; querying the circulation position table according to the relative humidity to obtain a corresponding fogging risk level threshold; When the fogging risk level is less than or equal to the fogging risk level threshold, obtaining a target circulation position; A first target evaporator temperature is obtained according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and energy-saving heat dissipation control of the passenger compartment is performed according to the first target evaporator temperature.

4. The method according to claim 1, characterized in that The method of obtaining a second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value, and performing energy-saving heat dissipation control for the passenger compartment according to the second target evaporator temperature, comprises: Get the air volume position, current in-car temperature, and in-car temperature offset table; Obtaining a second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value; Obtaining a target air volume level according to the air volume level, and querying the in-vehicle temperature offset table to obtain an in-vehicle temperature offset value; Obtaining a target vehicle interior temperature according to the current vehicle interior temperature and the vehicle interior temperature offset value; The compressor speed is controlled according to the target in-vehicle temperature, and energy-saving and heat dissipation control of the passenger compartment is completed through the target air volume gear and the second target evaporator temperature.

5. The method according to claim 1, characterized in that If the current battery temperature is less than the preset battery temperature threshold, the passenger compartment electronic expansion valve is opened, and the battery electronic expansion valve is closed, so as to perform passenger compartment energy-saving and heat dissipation control, the method further includes: Obtaining an initial evaporator control temperature, a state of a vehicle door and window, a first preset time threshold, and a second preset time threshold; If the state of the automobile door and window is open, obtaining the opening time of the automobile door and window; If the vehicle door and window opening time is greater than or equal to the first preset time threshold and less than the second preset time threshold, the evaporator control temperature is obtained according to the initial evaporator control temperature, and energy-saving heat dissipation control of the passenger compartment is performed according to the evaporator control temperature; If the vehicle door and window opening time is greater than or equal to the second preset time threshold, the compressor is turned off.

6. An air conditioning energy-saving control device, characterized in that: The air conditioning energy-saving control device is applied to an automobile air conditioner, which includes an outdoor heat exchanger, a compressor, a four-way valve, a passenger compartment refrigeration circuit and a battery refrigeration circuit. The passenger compartment refrigeration circuit includes a passenger compartment electronic expansion valve and an evaporator. The battery refrigeration circuit includes a battery electronic expansion valve, a water pump, a heat exchanger and a battery. The first end of the four-way valve and the second end of the four-way valve are respectively connected in series with the compressor. The passenger compartment refrigeration circuit and the battery refrigeration circuit are connected in parallel through the third end of the four-way valve and the fourth end of the four-way valve. The passenger compartment electronic expansion valve is connected in series with the evaporator, the battery electronic expansion valve is connected in series with the plate heat exchanger, and the heat exchanger is connected in series with the battery. The device includes: An acquisition module, used to detect the working status of the evaporator and the battery when acquiring the air conditioning energy-saving control of the air conditioning control panel; A completion module is used for performing air conditioning energy-saving control according to the vehicle state if the working state of the evaporator and the battery is normal operation; the step of performing air conditioning energy-saving control according to the vehicle state if the working state of the evaporator and the battery is normal operation includes: obtaining the current battery temperature; if the current battery temperature is greater than or equal to the preset battery temperature threshold, closing the passenger compartment electronic expansion valve and opening the battery electronic expansion valve to perform battery energy-saving heat dissipation control; if the current battery temperature is less than the preset battery temperature threshold, opening the passenger compartment electronic expansion valve and closing the battery electronic expansion valve to perform passenger compartment energy-saving heat dissipation control; performing passenger compartment energy-saving heat dissipation control includes: obtaining the air conditioning operating condition; when the air conditioning operating condition is a manual condition, obtaining a first target evaporator temperature according to the evaporator control temperature, the target circulation position and the preset temperature offset value, and performing passenger compartment energy-saving heat dissipation control according to the first target evaporator temperature; when the air conditioning operating condition is an automatic condition, obtaining a second target evaporator temperature according to the evaporator control temperature and the preset temperature offset value, and performing passenger compartment energy-saving heat dissipation control according to the second target evaporator temperature; The exit module is used to exit the air conditioning energy-saving control if the working status of the evaporator and the battery is not running.

7. A vehicle, characterized in that: The vehicle includes a car air conditioner, and the car air conditioner executes the steps of the air conditioning energy-saving control method according to any one of claims 1 to 5.

8. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the air conditioning energy-saving control method according to any one of claims 1 to 5 are implemented.

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