Control method for vehicle, vehicle air conditioner and compressor thereof
By introducing active limit control into the vehicle air conditioner and setting compressor speed limits based on various factors, the instability of the compressor under extreme operating conditions is solved, thereby improving the stability and lifespan of the compressor.
Patent Information
- Application Number
- CN202510012337.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2045-01-03
AI Technical Summary
In existing vehicle air conditioning systems, the compressor control lacks a limit strategy, leading to frequent shutdown protection under extreme operating conditions, which affects the compressor's operational stability and lifespan.
The compressor controller actively sets multiple speed limits based on factors such as real-time power, operating mode, battery cooling requirements, and noise and vibration limitations, and selects the lowest target speed limit to achieve stable compressor operation.
This improves the control stability and service life of the compressor, ensuring stable operation of the compressor under various working conditions.
Smart Images
Figure CN119611010B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle air conditioning technology, specifically to a control method for an automobile, a vehicle air conditioner and its compressor. Background Technology
[0002] In existing vehicle air conditioning systems, there are no relevant limiting strategies for controlling the compressor. The compressor can only passively receive requests to work. When faced with extreme special operating conditions, the compressor is prone to frequent shutdown protection, which cannot guarantee the stability of the compressor's operation and thus reduces the compressor's service life. Summary of the Invention
[0003] In view of this, this application provides a control method for an automobile, an in-vehicle air conditioner, and its compressor, for realizing an active limit control function for the compressor speed, thereby ensuring the stability of compressor control and improving the service life of the compressor. The technical solution of this application is as follows:
[0004] The first aspect of this application provides a compressor control method for an in-vehicle air conditioner, comprising: obtaining a first speed limit based on the current real-time power of the compressor and a preset power-speed limit curve; obtaining a second speed limit based on the current operating mode of the in-vehicle air conditioner and the operating parameters of the compressor; acquiring the battery cooling power requirement of the vehicle controller; obtaining a third speed limit based on the set temperature of the in-vehicle air conditioner, ambient temperature data, and the battery cooling power requirement; obtaining a fourth speed limit based on a preset noise and vibration limiting strategy; selecting the lowest target speed limit from the first speed limit, the second speed limit, the third speed limit, and the fourth speed limit; and controlling the compressor to operate according to the target speed limit.
[0005] In one embodiment of this application, the compressor control method further includes: when the working load of the compressor is greater than or equal to a preset value, transmitting an overload signal to the vehicle controller so that the vehicle controller generates a corresponding power limit; receiving the power limit from the vehicle controller and controlling the compressor to operate according to the power limit.
[0006] In one embodiment of this application, the compressor control method further includes: converting the power limit into a fifth speed limit based on the power-speed limit curve; selecting the lowest target speed limit from the first speed limit, the second speed limit, the third speed limit, the fourth speed limit, and the fifth speed limit; and controlling the compressor to operate according to the target speed limit.
[0007] In one embodiment of this application, obtaining a third speed limit based on the set temperature of the vehicle air conditioner, ambient temperature data, and the battery cooling power requirement includes: obtaining a first speed based on the set temperature and ambient temperature data; obtaining a second speed based on the battery cooling power requirement and a preset cooling power speed comparison table; and selecting the maximum speed from the first speed and the second speed as the third speed limit.
[0008] In one embodiment of this application, the ambient temperature data includes the vehicle interior temperature, the vehicle exterior temperature, and the light intensity; obtaining the first rotation speed based on the set temperature and the ambient temperature data includes: obtaining the target air outlet temperature of the vehicle air conditioner based on the set temperature, the vehicle interior temperature, the vehicle exterior temperature, and the light intensity; obtaining the target evaporator temperature of the vehicle air conditioner based on the target air outlet temperature and a preset temperature curve; and obtaining the first rotation speed based on the historical first rotation speed, the historical evaporator temperature, and the target evaporator temperature from the previous control cycle.
[0009] In one embodiment of this application, obtaining the fourth speed limit based on a preset noise and vibration limiting strategy includes: obtaining the fourth speed limit based on the blower speed of the vehicle air conditioner and a preset blower speed tachometer.
[0010] In one embodiment of this application, the operating mode includes a cooling mode, a dehumidification mode, a heating mode, and a custom mode, and the operating parameters include pressure value, power module temperature, and phase current value; obtaining the second speed limit based on the current operating mode of the vehicle air conditioner and the operating parameters of the compressor includes: matching the current operating mode and the operating parameters of the compressor with a preset speed limit table to obtain the corresponding second speed limit.
[0011] A second aspect of this application provides a vehicle air conditioner, including a compressor and a compressor controller, wherein the compressor is connected to the compressor controller, and the compressor controller is used to execute the compressor control method.
[0012] A third aspect of this application provides an automobile, including a vehicle controller and the aforementioned vehicle air conditioner, wherein the vehicle controller is connected to the compressor controller.
[0013] In one embodiment of this application, the vehicle controller is used to obtain the power module temperature of the compressor and the water temperature of the vehicle when it receives an overload signal transmitted by the compressor controller, match the power module temperature and the water temperature with a preset power limit table to obtain the power limit of the compressor, and transmit the power limit to the compressor controller.
[0014] It is understood that this application determines the first speed limit based on the real-time power of the compressor, the second speed limit based on the vehicle air conditioning operating mode and compressor operating parameters, the third speed limit based on the cooling requirements of the vehicle battery and the temperature regulation requirements of the passenger space, and the fourth speed limit based on noise and vibration. Finally, it determines the lowest target speed limit from the four speed limits and controls the compressor operation according to the target speed limit, thereby realizing the active limit control function of the compressor speed, thus ensuring the stability of compressor control and improving the service life of the compressor. Attached Figure Description
[0015] Figure 1 This is a schematic block diagram of a vehicle air conditioner provided in an embodiment of this application.
[0016] Figure 2 This is a flowchart illustrating a compressor control method for a vehicle air conditioner provided in an embodiment of this application.
[0017] Figure 3 This is a flowchart illustrating the second method for controlling the compressor of a vehicle air conditioner provided in this application embodiment.
[0018] Figure 4 This is a flowchart illustrating the third method for controlling the compressor of a vehicle air conditioner provided in this application embodiment.
[0019] Figure 5 This is a schematic diagram of a process for obtaining a third rotational speed limit provided in an embodiment of this application.
[0020] Figure 6 This is a schematic diagram of a process for obtaining a first rotational speed provided in an embodiment of this application.
[0021] Figure 7 This is a schematic block diagram of a car provided in an embodiment of this application. Detailed Implementation
[0022] It should be noted that in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone, where A and B can be singular or plural. The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and drawings of this application are used to distinguish similar objects, not to describe a specific order or sequence.
[0023] It should also be noted that the methods disclosed in the embodiments of this application or the methods shown in the flowcharts include one or more steps for implementing the method. Without departing from the scope of the claims, the execution order of multiple steps can be interchanged, and some steps can also be deleted.
[0024] In existing vehicle air conditioning systems, there are no relevant limiting strategies for controlling the compressor. The compressor can only passively receive requests to work. When faced with extreme special operating conditions, the compressor is prone to frequent shutdown protection, which cannot guarantee the stability of the compressor's operation and thus reduces the compressor's service life.
[0025] This application provides a control method for an automobile, an in-vehicle air conditioner, and its compressor, which enables active limit control of the compressor speed to ensure the stability of compressor control and improve the service life of the compressor.
[0026] Please refer to Figure 1 , Figure 1 This is a schematic block diagram of a vehicle air conditioner provided in an embodiment of this application, wherein the vehicle air conditioner 100 includes a compressor 110 and a compressor controller 120.
[0027] The compressor controller 120 is used to control the compressor 110 to work according to the working status of the vehicle air conditioner 100, and to obtain real-time parameters such as phase current, speed, temperature and pressure of the compressor 110 for feedback control. The compressor controller 120 can also be connected to the vehicle controller and work together with the vehicle controller to control the compressor 110 to work.
[0028] Next, combine Figure 1 This application provides a method for controlling the compressor of a vehicle air conditioner, as illustrated in an embodiment. Please refer to [link / reference needed]. Figure 2 Specifically, it includes the following steps:
[0029] Step S21: Obtain the first speed limit based on the compressor's current real-time power and the preset power-speed limit curve.
[0030] In this embodiment, the power-speed limit curve is the relationship curve between the real-time power of the compressor and the speed limit. Different compressor models may have different power-speed limit curves, which can be obtained by the manufacturer through testing before the compressor leaves the factory; this is not limited here. The compressor controller can pre-store the power-speed limit curve, and it can also obtain the compressor's real-time power through the compressor's power module, substituting this real-time power as a variable into the power-speed limit curve to obtain the corresponding first speed limit.
[0031] Step S22: Obtain the second speed limit based on the current working mode of the vehicle air conditioner and the operating parameters of the compressor.
[0032] In this embodiment, the operating mode of the vehicle air conditioner may include a cooling mode, a dehumidification mode, and a heating mode. The operating parameters of the compressor may include pressure value, power module temperature, and phase current value. The compressor controller may also have a second speed limit table pre-set for each combination of operating mode and operating parameters. After obtaining the current operating mode of the vehicle air conditioner and the operating parameters of the compressor, the compressor controller can match them with the second speed limit table to obtain the corresponding second speed limit.
[0033] Step S23: Obtain the battery cooling power requirement of the vehicle controller.
[0034] It's understandable that in addition to regulating the temperature of the passenger space, the car's air conditioning system can also cool the car's battery. That is, the air conditioning system can use a portion of its power for cooling, thereby cooling the car's battery. Therefore, the compressor controller can also be connected to the vehicle controller to obtain the battery cooling power requirement from the vehicle controller, and control the compressor to provide a portion of its power to cool the car's battery based on this power requirement.
[0035] Step S24: Obtain the third speed limit based on the vehicle air conditioning set temperature, ambient temperature data, and battery cooling power requirements.
[0036] In this embodiment, when the vehicle has a battery cooling requirement, the compressor controller receives the battery cooling power requirement from the vehicle controller and can also obtain a third speed limit based on the battery cooling power requirement and the temperature regulation requirements of the passenger space. The temperature regulation requirements of the passenger space include the aforementioned vehicle air conditioning set temperature and the vehicle's ambient temperature data.
[0037] Step S25: Obtain the fourth speed limit according to the preset noise and vibration limiting strategy.
[0038] In this embodiment, the compressor controller can also obtain a fourth speed limit for the compressor based on a preset noise and vibration limiting strategy. For example, a noise detection unit can be provided in a vehicle air conditioner, and the compressor controller is connected to the noise detection unit to obtain the decibel value output by the noise detection unit in order to obtain the corresponding fourth speed limit based on the decibel value.
[0039] Step S26: Select the lowest target speed limit from the first speed limit, the second speed limit, the third speed limit and the fourth speed limit.
[0040] Step S27: Control the compressor operation according to the target speed limit.
[0041] In this embodiment of the application, after obtaining the first speed limit, the second speed limit, the third speed limit and the fourth speed limit, the compressor controller can select the lowest target speed limit from the four speed limits, so as to control the compressor operation according to the target speed limit.
[0042] It is understood that in this embodiment, the first speed limit is determined by the real-time power of the compressor, the second speed limit is determined by the working mode of the vehicle air conditioner and the working parameters of the compressor, the third speed limit is determined by the cooling requirements of the vehicle battery and the temperature regulation requirements of the passenger space, and the fourth speed limit is determined by the noise and vibration. Finally, the lowest target speed limit is determined from the four speed limits, and the compressor operation is controlled according to the target speed limit, thereby realizing the active limit control function of the compressor speed, thus ensuring the stability of compressor control and improving the service life of the compressor.
[0043] Please refer to Figure 3 , Figure 3 This is a flowchart illustrating a second method for controlling the compressor of a vehicle air conditioner, as provided in an embodiment of this application. Figure 3 Steps S31 to S37 shown are the same as those described above. Figure 2 The steps S21 to S27 shown are the same, and will not be repeated here. Figure 3 The method shown also includes:
[0044] Step S38: When the compressor's operating load is determined to be greater than or equal to a preset value, an overload signal is transmitted to the vehicle controller so that the vehicle controller generates a corresponding power limit.
[0045] In this embodiment, the compressor controller can also detect the compressor's workload in real time. When the workload is greater than or equal to a preset value, it transmits an overload signal to the vehicle controller. After receiving the compressor's overload signal, the vehicle controller can generate a corresponding compressor power limit and send it back to the compressor controller.
[0046] For example, the compressor controller can detect the real-time power of the compressor in real time, and use the ratio of the real-time power to the maximum power of the compressor as the above-mentioned working load. When the working load is greater than or equal to 80%, the above-mentioned overload signal is output.
[0047] Step S39: Receive the power limit from the vehicle controller and control the compressor to operate according to the power limit.
[0048] In this embodiment, the compressor controller controls the compressor to operate within a target speed limit while simultaneously controlling it to run according to a power limit, ensuring that the compressor also does not exceed that power limit. It can be understood that the coordinated control of the compressor operation by the target speed limit and the power limit in this embodiment better enables the compressor to operate within a stable range under various operating conditions, thereby further improving the stability and lifespan of the compressor control.
[0049] Please refer to Figure 4 , Figure 4 This is a flowchart illustrating a third method for controlling the compressor of a vehicle air conditioner, as provided in an embodiment of this application. Figure 4 Steps S41 to S45 shown are the same as those described above. Figure 2 The steps S21 to S25 shown are the same, and will not be repeated here. Figure 4 The method shown also includes:
[0050] Step S46: When the compressor's operating load is determined to be greater than or equal to a preset value, an overload signal is transmitted to the vehicle controller so that the vehicle controller generates a corresponding power limit.
[0051] Step S47: Convert the power limit to the fifth speed limit based on the power speed limit curve.
[0052] Step S48: Select the lowest target speed limit from the first speed limit, the second speed limit, the third speed limit, the fourth speed limit, and the fifth speed limit.
[0053] Step S49: Control the compressor operation according to the target speed limit.
[0054] In this embodiment, when the compressor's workload is greater than or equal to a preset value, the compressor controller can also convert the power limit value fed back from the vehicle controller into a speed limit value. Specifically, the compressor controller converts the power limit value into a fifth speed limit value based on the power-speed limit curve, and then filters it together with the first, second, third, and fourth speed limits to select the lowest target speed limit value. The compressor operation is then controlled according to the target speed limit value. Because the power limit is converted into a fifth speed limit value, the compressor controller only needs to control the compressor based on the speed limit value to achieve coordinated control of both the power limit and the speed limit. This reduces the control requirements of the compressor controller and thus lowers control costs.
[0055] In some embodiments, such as Figure 5 As shown, the steps for obtaining the third speed limit based on the vehicle's air conditioning set temperature, ambient temperature data, and battery cooling power requirements specifically include:
[0056] Step S51: Obtain the first rotation speed based on the set temperature and ambient temperature data.
[0057] In this embodiment, the set temperature is the output temperature of the vehicle air conditioner set by the user. A temperature detection unit can also be installed in the vehicle air conditioner or the car, and the compressor control unit can obtain the ambient temperature data through the temperature detection unit. Furthermore, a temperature-speed ratio table can be pre-stored in the compressor control unit, and the compressor control unit matches the set temperature and ambient temperature data with the temperature-speed ratio table to obtain the first speed.
[0058] Step S52: Obtain the second rotation speed according to the battery cooling power requirement and the preset cooling power speed comparison table.
[0059] In this embodiment of the application, the compressor controller may also pre-store the above-mentioned cooling power speed comparison table. After obtaining the battery cooling demand power transmitted by the vehicle controller, the battery cooling demand power can be matched with the cooling power speed comparison table to obtain the above-mentioned first speed.
[0060] For example, a table comparing cooling power and rotation speed can be provided as follows:
[0061]
[0062] Step S53: Select the highest speed from the first speed and the second speed as the third speed limit.
[0063] In this embodiment, a first rotation speed is obtained first by using the set temperature of the vehicle air conditioner and the ambient temperature data of the vehicle. Then, a second rotation speed is obtained by using the power required for battery cooling. Finally, a third rotation speed limit is obtained based on the first and second rotation speeds. This can effectively combine the user's temperature control needs with the vehicle's battery cooling needs. The obtained third rotation speed limit is used to control the compressor during operation, which can simultaneously ensure the user's temperature regulation experience and the vehicle's battery cooling needs.
[0064] In some embodiments, ambient temperature data includes the vehicle interior temperature, the vehicle exterior temperature, and light intensity, such as... Figure 6 As shown, the steps for obtaining the first rotational speed based on the set temperature and ambient temperature data specifically include:
[0065] Step S61: Obtain the target air outlet temperature of the vehicle air conditioner based on the set temperature, the interior temperature, the exterior temperature, and the light intensity.
[0066] In this embodiment, temperature sensors can be installed inside and outside the vehicle to acquire the interior and exterior temperatures, and a light sensor can be installed outside the vehicle to acquire light intensity. The vehicle controller can be connected to the temperature and light sensors, and after acquiring the interior and exterior temperatures and light intensity, it can transmit the data to the compressor controller.
[0067] The formula for calculating the target air outlet temperature can include: Target air outlet temperature = Set temperature a outside temperature b Car interior temperature c Light intensity d. It is understood that the coefficients a, b, c, and d in the above formula can be obtained through experimentation, and are not limited here.
[0068] Step S62: Obtain the target evaporator temperature of the vehicle air conditioner based on the target air outlet temperature and the preset temperature curve.
[0069] In this embodiment of the application, the aforementioned preset temperature curve is the relationship curve between the target air outlet temperature and the target evaporator temperature. The compressor controller may also store the preset temperature curve in advance. After obtaining the target air outlet temperature, the preset temperature curve can be substituted to obtain the corresponding target evaporator temperature.
[0070] Step S63: Obtain the first rotational speed based on the historical first rotational speed, historical evaporator temperature, and target evaporator temperature from the previous control cycle.
[0071] In this embodiment of the application, the formula for the first rotational speed may include: SPD1(n) = SPD1(n-1) + Kp(E(n) - E(n-1)) + Ki × E(n). Where SPD1(n) is the first rotational speed, SPD1(n-1) is the historical first rotational speed, Kp is the proportional constant of the proportional-integral control, Ki is the integral constant of the proportional-integral control, E(n) is the difference between the target evaporator temperature and the real-time evaporator temperature, and E(n-1) is the difference between the historical evaporator temperature and the real-time evaporator temperature from the previous control cycle.
[0072] In some embodiments, a fourth speed limit can be obtained based on the blower speed of the vehicle's air conditioning system and a preset blower speed tachometer. For example, as shown in the table below:
[0073]
[0074] In some embodiments, the above-mentioned operating modes include cooling mode, dehumidification mode, heating mode, and custom mode, and the operating parameters include pressure value, power module temperature, and phase current value. The step of obtaining the second speed limit value based on the current operating mode of the vehicle air conditioner and the compressor's operating parameters specifically includes: matching the current operating mode and the compressor's operating parameters with a preset speed limit value table to obtain the corresponding second speed limit value.
[0075] For example, a preset speed limit table could be:
[0076]
[0077] Please refer to Figure 7 , Figure 7 This is a schematic block diagram of a car provided in an embodiment of this application. The car 10 includes a vehicle controller 11 and an in-vehicle air conditioner 100 of any of the above embodiments. The vehicle controller 11 is connected to the compressor controller 120 of the in-vehicle air conditioner 100.
[0078] The vehicle controller 11 is used to obtain the power module temperature of the compressor 110 and the water temperature of the vehicle 10 when it receives the overload signal transmitted by the compressor controller 120. It then matches the power module temperature and water temperature with a preset power limit table to obtain the power limit of the compressor 110 and transmits the power limit to the compressor controller 120.
[0079] In some embodiments, the power limit table may be:
[0080]
[0081] This application also provides a computer storage medium storing a computer program that, when executed by a processor, causes the processor to perform the aforementioned current control method.
[0082] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially as a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer storage medium or transmitted through the computer storage medium. The computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., Digital Versatile Discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).
[0083] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. This program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the methods described above. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks. Unless otherwise specified, the technical features of this embodiment and its implementation can be combined arbitrarily.
[0084] The embodiments described above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Any modifications and improvements made by those skilled in the art to the technical solutions of this application without departing from the spirit of this application should fall within the protection scope defined by the claims of this application.
Claims
1. A compressor control method for a vehicle air conditioner, characterized in that, include: Based on the compressor's current real-time power and the preset power-speed limit curve, the first speed limit is obtained; Based on the current operating mode of the vehicle air conditioner and the operating parameters of the compressor, a second speed limit is obtained; Obtain the battery cooling power requirement of the vehicle controller; A third rotational speed limit is obtained based on the set temperature of the vehicle air conditioner, the ambient temperature data, and the battery cooling power requirement. A fourth speed limit is obtained based on a preset noise and vibration limiting strategy; The lowest target speed limit is selected from the first speed limit, the second speed limit, the third speed limit, and the fourth speed limit; The compressor is controlled to operate according to the target speed limit; The step of obtaining the third rotational speed limit based on the set temperature of the vehicle air conditioner, ambient temperature data, and the battery cooling power requirement includes: The first rotational speed is obtained based on the set temperature and the ambient temperature data; The second rotational speed is obtained based on the battery cooling power requirement and the preset cooling power speed comparison table; The maximum speed is selected from the first speed and the second speed as the third speed limit.
2. The compressor control method as described in claim 1, characterized in that, Also includes: When the compressor's operating load is determined to be greater than or equal to a preset value, an overload signal is transmitted to the vehicle controller, so that the vehicle controller generates a corresponding power limit value. The system receives the power limit value from the vehicle controller and controls the compressor to operate according to the power limit value.
3. The compressor control method as described in claim 2, characterized in that, Also includes: Based on the power-speed limit curve, the power limit is converted into a fifth speed limit; The lowest target speed limit is selected from the first speed limit, the second speed limit, the third speed limit, the fourth speed limit, and the fifth speed limit; The compressor is controlled to operate according to the target speed limit.
4. The compressor control method as described in claim 1, characterized in that, Ambient temperature data includes the vehicle interior temperature, the vehicle exterior temperature, and light intensity; The step of obtaining the first rotational speed based on the set temperature and the ambient temperature data includes: The target air outlet temperature of the vehicle air conditioner is obtained based on the set temperature, the interior temperature, the exterior temperature, and the light intensity. The target evaporator temperature of the vehicle air conditioner is obtained based on the target air outlet temperature and the preset temperature curve. The first rotational speed is obtained based on the historical first rotational speed, historical evaporator temperature, and the target evaporator temperature from the previous control cycle.
5. The compressor control method according to any one of claims 1 to 4, characterized in that, The step of obtaining the fourth rotational speed limit based on a preset noise and vibration limiting strategy includes: The fourth speed limit is obtained based on the blower speed of the vehicle air conditioner and the preset blower speed table.
6. The compressor control method as described in claim 5, characterized in that, The operating modes include cooling mode, dehumidification mode, heating mode and custom mode, and the operating parameters include pressure value, power module temperature and phase current value. The step of obtaining the second speed limit based on the current operating mode of the vehicle air conditioner and the operating parameters of the compressor includes: Based on the current operating mode and the compressor's operating parameters, the corresponding second speed limit is obtained by matching with a preset speed limit table.
7. A vehicle air conditioner, characterized in that, It includes a compressor and a compressor controller, wherein the compressor is connected to the compressor controller, and the compressor controller is used to perform the compressor control method as described in any one of claims 1 to 6.
8. A car, characterized in that, It includes a vehicle controller and an on-board air conditioner as described in claim 7, wherein the vehicle controller is connected to the compressor controller.
9. The automobile as described in claim 8, characterized in that, When the vehicle controller receives an overload signal transmitted by the compressor controller, it acquires the power module temperature of the compressor and the water temperature of the vehicle, matches the power module temperature and the water temperature with a preset power limit table to obtain the power limit of the compressor, and transmits the power limit to the compressor controller.
Citation Information
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