A control method, device and system of an air conditioner compressor for a vehicle, and a vehicle

Abstract

The application discloses a control method of a vehicle air conditioner compressor, which comprises the following steps: detecting a temperature control demand of a preset detection area of a vehicle, determining a current working state of a compressor of the vehicle according to the temperature control demand, determining whether the refrigerant reserve of the compressor is insufficient through a preset first refrigerant reserve determination strategy when the current working state of the compressor is a preset refrigeration state, determining whether the refrigerant reserve of the compressor is insufficient through a preset second refrigerant reserve determination strategy when the current working state of the compressor is a preset heating state, and controlling the compressor to stop running when it is determined that the refrigerant reserve is insufficient through the first refrigerant reserve determination strategy or the second refrigerant reserve determination strategy. The application also provides a control device and system of the vehicle air conditioner compressor and a vehicle corresponding to the control method of the vehicle air conditioner compressor.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, and in particular relates to a control method, device, system, and vehicle for an automotive air conditioning compressor. Background Technology

[0002] Traditional automotive air conditioning systems have simple piping. Insufficient refrigerant can be detected by observing bubbles in the sight glass when the system is running in cooling mode, thus addressing poor cooling performance and allowing for timely refrigerant replenishment to protect the compressor. However, this method requires professional operation and assessment, and it's prone to failure due to user negligence, resulting in the compressor operating with insufficient refrigerant for extended periods and potentially causing damage.

[0003] For air conditioning in new energy vehicles, heat pump systems are widely used in the market. Heat pump air conditioning systems have complex piping and include both cooling and heating modes, involving reversing the refrigerant flow direction. Furthermore, heat pump systems are highly sensitive to refrigerant levels, making it impossible to rely solely on the presence of bubbles in the sight glass to determine refrigerant insufficiency. The electric compressor, a key component, accounts for a significant portion of the total system cost, necessitating timely and accurate refrigerant level assessment to ensure system performance and protect the compressor. Currently, most vehicles with heat pump systems still rely on sight glasses to determine the refrigerant content in the system. Summary of the Invention

[0004] The purpose of this application is to provide a control method, device, system, and vehicle for an automotive air conditioning compressor. By applying different strategies according to different operating modes of the air conditioning system, the accuracy and comprehensiveness of the detection are ensured.

[0005] To achieve the above objectives:

[0006] In a first aspect, the present invention provides a control method for an automotive air conditioning compressor, comprising: detecting the temperature control requirements of a preset detection area of ​​the vehicle, and determining the current operating state of the vehicle's compressor based on the temperature control requirements;

[0007] When the compressor is currently in a preset cooling state, a preset first refrigerant reserve determination strategy is used to determine whether the refrigerant reserve of the compressor is insufficient; when the compressor is currently in a preset heating state, a preset second refrigerant reserve determination strategy is used to determine whether the refrigerant reserve of the compressor is insufficient.

[0008] When it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient, the compressor is controlled to stop operating.

[0009] In one embodiment, the detection area includes the passenger compartment module of the vehicle and the battery module of the vehicle.

[0010] In one embodiment, determining the current operating state of the vehicle's compressor based on the temperature control requirements includes:

[0011] If the temperature control requirements of the cabin module and the battery module are both cooling requirements, or if one of them has a cooling requirement while the other does not, then the current working state of the compressor is determined to be the cooling state.

[0012] If the temperature control requirements of the cabin module and the battery module are both heating requirements, or if one of them has a heating requirement while the other does not, then the current operating state of the compressor is determined to be the heating state.

[0013] In one embodiment, determining the current operating state of the vehicle's compressor based on the temperature control requirements further includes:

[0014] If the temperature control requirement of the cabin module is cooling and the temperature control requirement of the battery module is heating, then the current working state of the compressor is determined to be the cooling state.

[0015] If the temperature control requirement of the cabin module is heating, and the temperature control requirement of the battery module is cooling, then the current operating state of the compressor is determined to be the heating state.

[0016] In one embodiment, determining the current operating state of the vehicle's compressor based on the temperature control requirements further includes:

[0017] If neither the cabin module nor the battery module has a temperature control requirement, and the compressor is not working, then the current working state of the compressor is determined to be the preset standby state, and the temperature control requirement of the detection area is detected again.

[0018] In one embodiment, determining whether the compressor has insufficient refrigerant reserves through a preset first refrigerant reserves determination strategy includes:

[0019] Obtain a first target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the first target parameter includes the compressor's suction temperature and the saturation temperature corresponding to the suction pressure.

[0020] Determine whether the difference between the intake temperature and the saturation temperature corresponding to the intake pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and whether the vehicle's electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the preset duration, then determine that the refrigerant reserve is insufficient.

[0021] In one embodiment, determining whether the compressor has insufficient refrigerant reserves through a preset second refrigerant reserves determination strategy includes:

[0022] Obtain a second target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's discharge temperature and the saturation temperature corresponding to the discharge pressure.

[0023] Determine whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then determine that the refrigerant reserve is insufficient.

[0024] Secondly, this application provides a control device for an automotive air conditioning compressor, comprising:

[0025] The demand detection module is used to detect the temperature control demand of the vehicle's preset detection area and determine the current working status of the vehicle's compressor based on the temperature control demand.

[0026] The status determination module is used to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset cooling state, by means of a preset first refrigerant reserve determination strategy; and to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset heating state, by means of a preset second refrigerant reserve determination strategy.

[0027] The operation control module is used to control the compressor to stop running when it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient.

[0028] In one embodiment, the detection area in the demand detection module includes the passenger cabin module and the battery module of the vehicle.

[0029] In one embodiment, the demand detection module is specifically used for:

[0030] If the temperature control requirements of the cabin module and the battery module are both cooling requirements, or if one of them has a cooling requirement while the other does not, then the current working state of the compressor is determined to be the cooling state.

[0031] If the temperature control requirements of the cabin module and the battery module are both heating requirements, or if one of them has a heating requirement while the other does not, then the current operating state of the compressor is determined to be the heating state.

[0032] In one embodiment, the demand detection module is specifically used for:

[0033] If the temperature control requirement of the cabin module is cooling and the temperature control requirement of the battery module is heating, then the current working state of the compressor is determined to be the cooling state.

[0034] If the temperature control requirement of the cabin module is heating, and the temperature control requirement of the battery module is cooling, then the current operating state of the compressor is determined to be the heating state.

[0035] In one embodiment, the demand detection module is specifically used for:

[0036] If neither the cabin module nor the battery module has a temperature control requirement, and the compressor is not working, then the current working state of the compressor is determined to be the preset standby state, and the temperature control requirement of the detection area is detected again.

[0037] In one embodiment, the state determination module is specifically used for:

[0038] Obtain a first target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the first target parameter includes the compressor's suction temperature and the saturation temperature corresponding to the suction pressure.

[0039] Determine whether the difference between the intake temperature and the saturation temperature corresponding to the intake pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and whether the vehicle's electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the preset duration, then determine that the refrigerant reserve is insufficient.

[0040] In one embodiment, the state determination module is specifically used for:

[0041] Obtain a second target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's discharge temperature and the saturation temperature corresponding to the discharge pressure.

[0042] Determine whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then determine that the refrigerant reserve is insufficient.

[0043] Thirdly, this application provides an automotive air conditioning system, including a compressor control device as described in the second aspect.

[0044] Fourthly, this application provides a vehicle including the vehicle air conditioning system as described in the third aspect.

[0045] This application provides a control method, device, system, and vehicle for an automotive air conditioning compressor. The method includes: detecting the temperature control requirements of a preset detection area of ​​the vehicle; determining the current operating state of the vehicle's compressor based on the temperature control requirements; when the current operating state of the compressor is a preset cooling state, determining whether the compressor's refrigerant reserve is insufficient using a preset first refrigerant reserve determination strategy; when the current operating state of the compressor is a preset heating state, determining whether the compressor's refrigerant reserve is insufficient using a preset second refrigerant reserve determination strategy; and controlling the compressor to stop operating when either the first or second refrigerant reserve determination strategy determines that the refrigerant reserve is insufficient. This method automatically detects the refrigerant content in the heat pump air conditioning system during operation, avoiding the problems of misjudgment and poor real-time performance caused by manual inspection. Simultaneously, after determining that a refrigerant shortage fault has occurred, the system reports the fault and provides a voice reminder via a cyclical fault pop-up on the instrument panel or a smart screen, informing the user of the reason for the air conditioning system's shutdown and reminding the user to replenish the refrigerant in a timely manner. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 A schematic flowchart illustrating the control method for an automotive air conditioning compressor provided in an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of the structure of the control device for the vehicle air conditioning compressor provided in an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of the working process of the control device for an automotive air conditioning compressor provided in an embodiment of the present invention; Detailed Implementation

[0050] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0051] It should be noted that step designations such as S1 and S2 are used in this document for the purpose of more clearly and concisely describing the corresponding content, and do not constitute a substantial limitation on the order. In specific implementation, those skilled in the art may execute S2 first and then S1, etc., but these should all be within the protection scope of this application.

[0052] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0053] See Figure 1 This application provides a method for controlling a vehicle air conditioning compressor. This method can be executed by a control device for the vehicle air conditioning compressor, which can be implemented using software and / or hardware, such as an in-vehicle terminal or in-vehicle controller. The control method for the vehicle air conditioning compressor provided in this embodiment includes:

[0054] Step S110: Detect the temperature control requirements of the vehicle's preset detection area, and determine the current operating status of the vehicle's compressor based on the temperature control requirements.

[0055] In one embodiment, the operating state is determined based on whether there is a cooling or heating requirement in the crew cabin or the battery side: if both the crew cabin module and the battery module have a cooling requirement, or one of them has a cooling requirement while the other does not, then the current operating state of the compressor is determined to be the cooling state; if both the crew cabin module and the battery module have a heating requirement, or one of them has a heating requirement while the other does not, then the current operating state of the compressor is determined to be the heating state.

[0056] In one embodiment, if the temperature control requirement of the cabin module is cooling and the temperature control requirement of the battery module is heating, then the current operating state of the compressor is determined to be the cooling state; if the temperature control requirement of the cabin module is heating and the temperature control requirement of the battery module is cooling, then the current operating state of the compressor is determined to be the heating state.

[0057] In one embodiment, if neither the cabin module nor the battery module has a temperature control requirement, and the compressor is not working, then the current working state of the compressor is determined to be a preset standby state, and the temperature control requirement of the detection area is detected again.

[0058] It is understandable that the main function of a heat pump air conditioning system is to provide a comfortable riding environment for passengers by cooling or heating the air in the passenger cabin, reducing driver fatigue and improving driving safety. It can also heat and cool the battery, allowing it to quickly adapt to different operating conditions and preventing overheating during charging, which could reduce charging efficiency. Therefore, when there is a conflict between the needs of the passenger cabin and the battery, passenger comfort should be prioritized to avoid physiological discomfort and safety hazards.

[0059] Step S120: When the current operating state of the compressor is a preset cooling state, determine whether the refrigerant reserve of the compressor is insufficient using a preset first refrigerant reserve determination strategy; when the current operating state of the compressor is a preset heating state, determine whether the refrigerant reserve of the compressor is insufficient using a preset second refrigerant reserve determination strategy.

[0060] In one embodiment, when the current operating state of the compressor is a preset refrigeration state, a first target parameter is acquired to determine whether the refrigerant reserve of the compressor is insufficient; the first target parameter includes the suction temperature of the compressor and the saturation temperature corresponding to the suction pressure; it is determined whether the difference between the suction temperature and the saturation temperature corresponding to the suction pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and the electronic expansion valve of the vehicle is in the maximum opening state; if so, and the duration exceeds a preset duration, then it is determined that the refrigerant reserve is insufficient.

[0061] In one embodiment, when the current operating state of the compressor is a preset heating state, a second target parameter is acquired to determine whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's exhaust temperature and the saturation temperature corresponding to the exhaust pressure; it is determined whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then it is determined that the refrigerant reserve is insufficient.

[0062] Step S130: When it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient, control the compressor to stop running.

[0063] It is understood that when the refrigerant balance is determined to be insufficient through the first refrigerant balance determination strategy or the second refrigerant balance determination strategy, the electronic expansion valve is in the maximum opening state, the timer counts to the full duration, then the refrigerant deficiency fault is established, the compressor stops, the system reports the fault, and the instrument cluster or smart screen provides corresponding prompts.

[0064] It's understandable that traditional automotive air conditioning systems have simple piping. Insufficient refrigerant can be detected by observing bubbles in the sight glass when the system is running in cooling mode, thus addressing poor cooling performance and allowing for timely refrigerant replenishment to protect the compressor. However, this method requires professional operation and assessment, and it's prone to failure due to user negligence, resulting in the compressor operating with insufficient refrigerant for extended periods and potentially causing damage.

[0065] For air conditioning in new energy vehicles, heat pump systems are widely used in the market. Heat pump air conditioning systems have complex piping and include both cooling and heating modes, involving reversing the refrigerant flow direction. Furthermore, heat pump systems are highly sensitive to refrigerant levels, making it impossible to rely solely on the presence of bubbles in the sight glass to determine refrigerant insufficiency. The electric compressor, a key component, accounts for a significant portion of the total system cost, necessitating timely and accurate refrigerant level assessment to ensure system performance and protect the compressor. Currently, most vehicles with heat pump systems still rely on sight glasses to determine the refrigerant content in the system.

[0066] The above methods enable the identification and reporting of refrigerant deficiency, ensuring the accuracy and comprehensiveness of the detection. This allows users or maintenance personnel to quickly identify the cause of air conditioner malfunctions and resolve them, improving the detection rate and reducing after-sales maintenance costs.

[0067] Based on the same inventive concept as the foregoing embodiments, this application provides a control device for an automotive air conditioning compressor. (See also...) Figure 2 This application provides a control device for a vehicle air conditioning compressor. This control device can be implemented using software and / or hardware, such as an in-vehicle terminal, an in-vehicle controller, or other electronic devices. The device includes:

[0068] The demand detection module is used to detect the temperature control demand of the vehicle's preset detection area and determine the current working status of the vehicle's compressor based on the temperature control demand.

[0069] The status determination module is used to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset cooling state, by means of a preset first refrigerant reserve determination strategy; and to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset heating state, by means of a preset second refrigerant reserve determination strategy.

[0070] The operation control module is used to control the compressor to stop running when it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient.

[0071] In one embodiment, the detection area in the demand detection module includes the passenger cabin module and the battery module of the vehicle.

[0072] In one embodiment, the demand detection module is specifically used for:

[0073] If both the cabin module and the battery module have a cooling requirement, or if one of them has a cooling requirement while the other does not, then the current operating state of the compressor is determined to be the cooling state; if both the cabin module and the battery module have a heating requirement, or if one of them has a heating requirement while the other does not, then the current operating state of the compressor is determined to be the heating state.

[0074] In one embodiment, the demand detection module is specifically used for:

[0075] If the temperature control requirement of the cabin module is cooling and the temperature control requirement of the battery module is heating, then the current operating state of the compressor is determined to be the cooling state; if the temperature control requirement of the cabin module is heating and the temperature control requirement of the battery module is cooling, then the current operating state of the compressor is determined to be the heating state.

[0076] In one embodiment, the demand detection module is specifically used for:

[0077] If neither the cabin module nor the battery module has a temperature control requirement, and the compressor is not working, then the current working state of the compressor is determined to be the preset standby state, and the temperature control requirement of the detection area is detected again.

[0078] In one embodiment, the state determination module is specifically used for:

[0079] A first target parameter is obtained to determine whether the refrigerant balance of the compressor is insufficient; the first target parameter includes the compressor's suction temperature and the saturation temperature corresponding to the suction pressure; it is determined whether the difference between the suction temperature and the saturation temperature corresponding to the suction pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and the vehicle's electronic expansion valve is in the maximum opening state; if so, and the duration exceeds a preset duration, then it is determined that the refrigerant balance is insufficient.

[0080] In one embodiment, the state determination module is specifically used for:

[0081] Obtain a second target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's exhaust temperature and the saturation temperature corresponding to the exhaust pressure; determine whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then determine that the refrigerant reserve is insufficient.

[0082] Based on the aforementioned inventive concept, the following is a detailed description of the device's workflow. (See attached document.) Figure 3 This is a schematic diagram of the working process of the control device for the vehicle air conditioning compressor provided in an embodiment of the present invention.

[0083] like Figure 3 As shown, in step S310, it is detected whether the temperature control requirements of the passenger cabin module and the battery module of the vehicle are both cooling requirements, or whether one of them has a cooling requirement while the other does not. If so, step S350 is executed; otherwise, step S320 is executed.

[0084] Step S320: Detect whether the temperature control requirement of the cabin module is a cooling requirement and whether the temperature control requirement of the battery module is a heating requirement. If yes, proceed to step S350; otherwise, proceed to step S330.

[0085] Step S330: Detect whether the temperature control requirements of the cabin module and the battery module are both heating requirements, or whether one of them has a heating requirement while the other does not. If so, proceed to step S360; otherwise, proceed to step S340.

[0086] Step S340: Detect whether the temperature control requirement of the cabin module is a heating requirement and whether the temperature control requirement of the battery module is a cooling requirement. If yes, proceed to step S360; otherwise, the system enters standby mode.

[0087] Step S350: Determine that the current operating state of the vehicle's compressor is the preset cooling state, and then execute step S370.

[0088] Step S360: Determine that the current operating state of the compressor is the preset heating state, and then execute step S380.

[0089] Step S370: Determine whether the difference between the suction temperature of the compressor and the saturation temperature corresponding to the suction pressure of the compressor is always greater than the preset first temperature difference threshold within a preset comparison period, and whether the electronic expansion valve of the vehicle is in the maximum opening state and the duration exceeds the preset duration. If yes, proceed to step S390; otherwise, re-detect whether the refrigerant balance is insufficient in real time.

[0090] Step S380: Determine whether the difference between the intake temperature and the saturation temperature corresponding to the intake pressure is always greater than the preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state and the duration exceeds the duration. If yes, proceed to step S390; otherwise, re-detect whether the refrigerant balance is insufficient in real time.

[0091] Step S390: Determine that the remaining amount of refrigerant is insufficient, and control the compressor to stop running.

[0092] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For example, see reference... Figure 1 In step S110, in Figure 3 This is specifically implemented through steps S310, S320, S330, and S340; see reference. Figure 1 In step S120, in Figure 3 The process is specifically implemented through steps S350, S360, S370, and S380.

[0093] This device can detect refrigerant deficiency in real time during system operation. When a refrigerant deficiency is detected, it immediately stops the compressor, solving the problem of compressor damage caused by prolonged operation without refrigerant or with insufficient refrigerant. This ensures the accuracy and comprehensiveness of the detection. At the same time, the system reports the fault through a fault pop-up on the instrument panel or voice broadcast reminder on the smart screen, informing the user of the reason for the air conditioning system stopping and reminding the user to replenish the refrigerant in time. This makes it convenient for users or maintenance personnel to know the cause of the air conditioning fault and to quickly deal with the fault, improving the problem detection rate and reducing after-sales maintenance costs.

[0094] For specific limitations regarding the control device for automotive air conditioning compressors, please refer to the limitations on the control methods for automotive air conditioning compressors mentioned above, which will not be repeated here. Each module in the aforementioned compressor control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in the electronic device in hardware form, or stored in the memory of the electronic device in software form, so that the processor can call and execute the corresponding operations of each module.

[0095] Based on the same inventive concept as the foregoing embodiments, this embodiment also provides an automotive air conditioning system, including the compressor control device described in the above embodiments.

[0096] Based on the same inventive concept as the foregoing embodiments, this embodiment also provides a vehicle including the vehicle air conditioning system described in the above embodiments.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for a vehicle air conditioning compressor, characterized in that, Includes the following steps: S1, detect the temperature control requirements of the vehicle's preset detection area, and determine the current operating status of the vehicle's compressor based on the temperature control requirements; S2, when the current operating state of the compressor is a preset cooling state, determine whether the refrigerant reserve of the compressor is insufficient through a preset first refrigerant reserve determination strategy; when the current operating state of the compressor is a preset heating state, determine whether the refrigerant reserve of the compressor is insufficient through a preset second refrigerant reserve determination strategy. S3, when it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient, control the compressor to stop running; In step S2, determining whether the compressor has insufficient refrigerant reserves through a preset first refrigerant reserve determination strategy includes: Obtain a first target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the first target parameter includes the compressor's suction temperature and the saturation temperature corresponding to the suction pressure. Determine whether the difference between the intake temperature and the saturation temperature corresponding to the intake pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and whether the vehicle's electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the preset duration, then determine that the refrigerant reserve is insufficient. In step S2, determining whether the compressor has insufficient refrigerant reserves through a preset second refrigerant reserve determination strategy includes: Obtain a second target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's discharge temperature and the saturation temperature corresponding to the discharge pressure. Determine whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then determine that the refrigerant reserve is insufficient.

2. The method according to claim 1, characterized in that, In step S1, the detection area includes the passenger cabin module of the vehicle and the battery module of the vehicle.

3. The method according to claim 2, characterized in that, Step S1 includes: If the temperature control requirements of the cabin module and the battery module are both cooling requirements, or if one of them has a cooling requirement while the other does not, then the current working state of the compressor is determined to be the cooling state. If the temperature control requirements of the cabin module and the battery module are both heating requirements, or if one of them has a heating requirement while the other does not, then the current operating state of the compressor is determined to be the heating state.

4. The method according to claim 3, characterized in that, Step S1 further includes: If the temperature control requirement of the cabin module is cooling and the temperature control requirement of the battery module is heating, then the current working state of the compressor is determined to be the cooling state. If the temperature control requirement of the cabin module is heating, and the temperature control requirement of the battery module is cooling, then the current operating state of the compressor is determined to be the heating state.

5. The method according to claim 4, characterized in that, Step S1 further includes: If neither the cabin module nor the battery module has a temperature control requirement, and the compressor is not working, then the current working state of the compressor is determined to be the preset standby state, and the temperature control requirement of the detection area is detected again.

6. A control device for an automotive air conditioning compressor, characterized in that, include: The demand detection module is used to detect the temperature control demand of the vehicle's preset detection area and determine the current working status of the vehicle's compressor based on the temperature control demand. The status determination module is used to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset cooling state, by means of a preset first refrigerant reserve determination strategy; and to determine whether the refrigerant reserve of the compressor is insufficient when the current operating state of the compressor is a preset heating state, by means of a preset second refrigerant reserve determination strategy. The operation control module is used to control the compressor to stop running when it is determined by the first refrigerant balance determination strategy or the second refrigerant balance determination strategy that the refrigerant balance is insufficient. Determining whether the compressor has insufficient refrigerant reserves through a preset first refrigerant reserve determination strategy includes: Obtain a first target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the first target parameter includes the compressor's suction temperature and the saturation temperature corresponding to the suction pressure. Determine whether the difference between the intake temperature and the saturation temperature corresponding to the intake pressure is always greater than a preset first temperature difference threshold within a preset comparison period, and whether the vehicle's electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the preset duration, then determine that the refrigerant reserve is insufficient. Determining whether the compressor has insufficient refrigerant reserves through a preset second refrigerant reserve determination strategy includes: Obtain a second target parameter for determining whether the refrigerant reserve of the compressor is insufficient; the second target parameter includes the compressor's discharge temperature and the saturation temperature corresponding to the discharge pressure. Determine whether the difference between the exhaust temperature and the saturation temperature corresponding to the exhaust pressure is always greater than a preset second temperature difference threshold during the comparison period, and whether the electronic expansion valve is in the maximum opening state; if so, and the duration exceeds the duration, then determine that the refrigerant reserve is insufficient.

7. A vehicle air conditioning system, characterized in that, Includes the compressor control device as described in claim 6.

8. A vehicle, characterized in that, Including the vehicle air conditioning system as described in claim 7.

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