Self-cleaning method and device for an automotive air conditioner
By controlling the frosting, defrosting, and ventilation modes of the car's air conditioning system, and achieving self-cleaning based on user instructions, the high cost and insufficient safety of existing air conditioning self-cleaning technologies are solved, resulting in a highly efficient and convenient air conditioning self-cleaning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DEEPAL AUTOMOBILE TECH CO LTD
- Filing Date
- 2023-03-16
- Publication Date
- 2026-05-29
AI Technical Summary
Existing automotive air conditioning self-cleaning methods require the addition of sensors to monitor airflow and in-vehicle air quality, leading to increased vehicle costs. The complex software logic of the air conditioning controller makes it prone to accidentally entering self-cleaning mode, and prolonged frost buildup on the evaporator increases the risk of damage. These methods are not convenient and efficient for self-cleaning and lack practicality.
By controlling the frosting, defrosting, and ventilation modes of the car's air conditioning system, self-cleaning is achieved according to user instructions. This includes entering frosting, defrosting, and ventilation modes after receiving a self-cleaning instruction. By utilizing preset durations and function controls, the system avoids accidental triggering of the air conditioning, protects the compressor, and fully utilizes the air conditioning functions for self-cleaning.
It reduces air conditioner cleaning costs, ensures the safety of air conditioning equipment, improves self-cleaning efficiency, is simple and practical, prevents compressor liquid slugging, and enhances the intelligence and convenience of the air conditioner cleaning process.
Smart Images
Figure CN116101024B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive technology, and in particular to a self-cleaning method and apparatus for automotive air conditioning. Background Technology
[0002] With the increasing popularity of new energy vehicles, users are demanding higher and higher levels of comfort from them. The temperature perception, noise, and odor of the air conditioning system are closely related to the user's riding experience, making the cleaning of the in-vehicle air conditioning system extremely important.
[0003] In related technologies, normal maintenance can be performed by replacing the air conditioning filter, or the car air conditioning can be cleaned by cleaning the mold on the surface of the evaporator. For example, patent CN113696693A calculates the amount of dust on the evaporator and activates the air conditioning self-cleaning function.
[0004] However, the related technologies require the addition of sensors to monitor airflow and in-vehicle air quality, which increases the overall vehicle cost. Furthermore, the complex software logic of the air conditioning controller can easily cause the air conditioning to mistakenly enter self-cleaning mode, and prolonged frost buildup on the evaporator increases the risk of damage. This makes it difficult to achieve convenient and efficient self-cleaning of the car air conditioning system, and it cannot guarantee the safety of the air conditioning equipment. As a result, the system is not practical and urgently needs to be addressed. Summary of the Invention
[0005] This application provides a self-cleaning method and device for automotive air conditioning to solve the problems in related technologies, such as the need to add sensors to monitor air volume and in-vehicle air quality, which increases the cost of the whole vehicle; the complexity of the air conditioning controller software logic, which makes the air conditioning prone to accidentally entering the self-cleaning mode; and the risk of damage due to prolonged frost buildup on the evaporator. These problems make it difficult to achieve convenient and efficient self-cleaning of automotive air conditioning, and cannot guarantee the safety of air conditioning equipment, resulting in insufficient practicality.
[0006] The first aspect of this application provides a self-cleaning method for an automotive air conditioner, applied to a thermal management controller, comprising the following steps: receiving a self-cleaning command from the automotive air conditioner; after entering the air conditioner self-cleaning mode based on the self-cleaning command, controlling the automotive air conditioner to enter a frosting mode and continuously running it for a first preset duration; after continuously running for the first preset duration, controlling the automotive air conditioner to enter a defrosting mode and continuously running it for a second preset duration; after continuously running for the second preset duration, controlling the automotive air conditioner to enter a ventilation mode and continuously running it for a third preset duration, until receiving an end command from the automotive air conditioner or running the third preset duration, and then exiting the air conditioner self-cleaning mode.
[0007] Based on the above-mentioned technical means, the embodiments of this application can realize the self-cleaning of the car air conditioner according to the user's instructions based on the frosting, defrosting and ventilation modes of the car air conditioner, thereby reducing the cost of air conditioner cleaning, ensuring the safety of the air conditioner equipment, improving the efficiency of the car air conditioner self-cleaning, and making it more convenient and practical.
[0008] Optionally, in one embodiment of this application, receiving the self-cleaning command from the vehicle air conditioner includes: obtaining the self-cleaning command uploaded by the vehicle diagnostic tool from the CAN network.
[0009] Based on the above technical means, the embodiments of this application can obtain the self-cleaning command uploaded by the vehicle fault diagnostic instrument from the CAN network, thereby realizing the accurate transmission of the self-cleaning command, avoiding the false triggering of the air conditioning cleaning function and causing inconvenience to the user, and improving the intelligence level of the self-cleaning command transmission.
[0010] Optionally, in one embodiment of this application, controlling the car air conditioner to enter the frosting mode and continuously run for a first preset duration includes: turning on the compressor, turning on the battery cooler of the car air conditioner with a preset electronic expansion valve opening, and turning on the battery water pump of the car air conditioner with a preset duty cycle.
[0011] According to the above technical means, the embodiments of this application can start the battery cooler of the car air conditioner with a preset electronic expansion valve opening degree and start the battery water pump of the car air conditioner with a preset duty cycle at the same time as starting the compressor, thereby further protecting the compressor, preventing the compressor from liquid slugging, and avoiding damage to the air conditioning equipment.
[0012] Optionally, in one embodiment of this application, controlling the car air conditioner to enter defrost mode and continue to run for a second preset duration includes: turning on the heating function of the car air conditioner, opening the hot / cold air damper of the car air conditioner to a preset position, and controlling the blower of the car air conditioner to deliver air at a preset speed.
[0013] Based on the above technical means, the embodiments of this application can simultaneously turn on the heating function of the car air conditioner, turn the hot and cold air damper of the car air conditioner to a preset position, and control the blower of the car air conditioner to deliver air at a preset level, thereby making full use of the car air conditioner function to achieve a self-cleaning process and making air conditioner cleaning more convenient.
[0014] Optionally, in one embodiment of this application, controlling the car air conditioner to enter ventilation mode and continue to run for a third preset duration includes: turning off the heating function of the car air conditioner and controlling the blower of the car air conditioner to deliver air at the maximum speed.
[0015] Based on the above technical means, the embodiments of this application can turn off the heating function of the car air conditioner and control the blower of the car air conditioner to deliver air at the maximum level, thereby further completing the self-cleaning process of the car air conditioner, so as to ensure the safety of the air conditioning equipment and quickly achieve air conditioning cleaning.
[0016] A second aspect of this application provides a self-cleaning device for an automotive air conditioner, applied to a thermal management controller, comprising: a receiving module for receiving a self-cleaning command from the automotive air conditioner; a first control module for controlling the automotive air conditioner to enter a frosting mode and continuously run for a first preset duration after entering the air conditioner self-cleaning mode based on the self-cleaning command; a second control module for controlling the automotive air conditioner to enter a defrosting mode and continuously run for a second preset duration after continuously running for the first preset duration; and a third control module for controlling the automotive air conditioner to enter a ventilation mode and continuously run for a third preset duration after continuously running for the second preset duration, until an end command is received from the automotive air conditioner or after running for the third preset duration, at which point the self-cleaning mode is exited.
[0017] Optionally, in one embodiment of this application, the receiving module includes: an acquisition unit, configured to acquire the self-cleaning command uploaded by the vehicle fault diagnostic tool from the CAN network.
[0018] Optionally, in one embodiment of this application, the first control module includes: a first starting unit, used to start the compressor, simultaneously start the battery cooler of the car air conditioner with a preset electronic expansion valve opening, and start the battery water pump of the car air conditioner with a preset duty cycle.
[0019] Optionally, in one embodiment of this application, the second control module includes: a second activation unit, used to activate the heating function of the car air conditioner, while simultaneously opening the hot / cold air damper of the car air conditioner to a preset position, and controlling the blower of the car air conditioner to deliver air at a preset speed.
[0020] Optionally, in one embodiment of this application, the third control module includes: an air supply unit, used to turn off the heating function of the car air conditioner and control the blower of the car air conditioner to supply air at the maximum speed.
[0021] A third aspect of this application provides a thermal management controller, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the self-cleaning method for an automotive air conditioner as described in the above embodiments.
[0022] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the self-cleaning method for an automotive air conditioner as described above.
[0023] The beneficial effects of this application are:
[0024] (1) The embodiments of this application can realize the self-cleaning of the car air conditioner based on the frosting, defrosting and ventilation modes of the car air conditioner according to the user's instructions, thereby reducing the cost of air conditioner cleaning, ensuring the safety of the air conditioner equipment, improving the efficiency of the car air conditioner self-cleaning, and making it more convenient and practical.
[0025] (2) In this embodiment, the battery cooler of the car air conditioner can be turned on at the same time as the compressor is turned on, with a preset electronic expansion valve opening, and the battery water pump of the car air conditioner can be turned on with a preset duty cycle, thereby further protecting the compressor, preventing the compressor from producing liquid slugging, and avoiding damage to the air conditioning equipment.
[0026] (3) The embodiments of this application can, while turning on the heating function of the car air conditioner, turn the hot and cold air damper of the car air conditioner to a preset position and control the blower of the car air conditioner to deliver air at a preset level, thereby making full use of the car air conditioner function to achieve the self-cleaning process and making air conditioner cleaning more convenient.
[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0028] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0029] Figure 1 This is a flowchart illustrating a self-cleaning method for an automotive air conditioner according to an embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the self-cleaning process of an automotive air conditioner according to an embodiment of this application;
[0031] Figure 3 This is a schematic diagram of the structure of a self-cleaning device for an automotive air conditioner according to an embodiment of this application;
[0032] Figure 4 This is a schematic diagram of the structure of a thermal management controller according to an embodiment of this application.
[0033] Among them, 10-self-cleaning device for automotive air conditioning; 100-receiving module, 200-first control module, 300-second control module and 400-third control module; 401-memory, 402-processor and 403-communication interface. Detailed Implementation
[0034] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0035] The self-cleaning method and apparatus for automotive air conditioning according to embodiments of this application are described below with reference to the accompanying drawings. Addressing the problems mentioned in the background art, such as the need to add sensors to monitor airflow and in-vehicle air quality, increasing overall vehicle costs, the complexity of air conditioning controller software logic leading to accidental entry into self-cleaning mode, and the increased risk of damage due to prolonged evaporator frosting, this application provides a self-cleaning method for automotive air conditioning. This method can achieve self-cleaning based on the frosting, defrosting, and ventilation modes of the automotive air conditioning system, according to user instructions. This reduces the cost of air conditioning cleaning, ensures equipment safety, improves the efficiency of self-cleaning, and is more convenient and practical. Therefore, this solves the problems of related technologies, such as the need to add sensors to monitor airflow and in-vehicle air quality, increasing overall vehicle costs, the complexity of air conditioning controller software logic leading to accidental entry into self-cleaning mode, and the increased risk of damage due to prolonged evaporator frosting, making it difficult to achieve convenient and efficient self-cleaning, and failing to guarantee the safety and practicality of the air conditioning system.
[0036] Specifically, Figure 1 This is a schematic flowchart of a self-cleaning method for an automotive air conditioner provided in an embodiment of this application.
[0037] like Figure 1 As shown, the self-cleaning method for this car air conditioner includes the following steps:
[0038] In step S101, a self-cleaning command from the car air conditioner is received.
[0039] It is understood that the self-cleaning command in this embodiment can be issued by the user, and the self-cleaning command of the car air conditioner can be obtained by activating the car air conditioner self-cleaning function.
[0040] Optionally, in one embodiment of this application, receiving a self-cleaning command from the vehicle air conditioner includes: obtaining a self-cleaning command uploaded by a vehicle diagnostic tool from the CAN network.
[0041] In actual operation, the vehicle's air conditioning self-cleaning function can be activated at the repair shop. Using a vehicle diagnostic tool, a "self-cleaning" active signal is sent to the thermal management controller via the CAN bus, thereby receiving the self-cleaning command of the vehicle's air conditioning.
[0042] This application embodiment can obtain the self-cleaning command uploaded by the vehicle fault diagnostic instrument from the CAN network, thereby achieving accurate transmission of the self-cleaning command, avoiding false triggering of the air conditioning cleaning function and causing inconvenience to the user, and improving the intelligence level of self-cleaning command transmission.
[0043] In step S102, after entering the air conditioner self-cleaning mode based on the air conditioner self-cleaning command, the car air conditioner is controlled to enter the frosting mode and run continuously for a first preset duration.
[0044] It is understood that in the embodiments of this application, the first preset duration is the continuous running time of the air conditioner entering the frosting mode in the self-cleaning mode. The air conditioner can receive the self-cleaning command through the thermal management controller to start the self-cleaning function. At this time, the compressor stops to reduce the evaporator temperature and shut down the compressor, and the car air conditioner enters the frosting mode to run for the first preset duration.
[0045] It should be noted that the first preset duration can be set by those skilled in the art based on the actual situation, and is not specifically limited here.
[0046] This application embodiment can control the car air conditioner to enter the frosting mode and continue to run for a first preset duration after entering the air conditioner self-cleaning mode based on the air conditioner self-cleaning command, thereby performing the initial process of air conditioner self-cleaning according to the user's actual command.
[0047] Optionally, in one embodiment of this application, while controlling the car air conditioner to enter the frosting mode and continue to run for a first preset duration, the method includes: turning on the compressor, turning on the battery cooler of the car air conditioner with a preset electronic expansion valve opening, and turning on the battery water pump of the car air conditioner with a preset duty cycle.
[0048] In some embodiments, after receiving a command to enter the air conditioner's self-cleaning mode, the air conditioner settings can be automatically changed to LOW mode and face / foot blowing mode, with fan speed at level 1. At this time, the evaporator insulation temperature is 7°C lower than the normal logical evaporator protection temperature T0, and the air conditioner begins to operate in frosting mode. In frosting mode, the battery cooler and battery water pump are automatically turned on to increase the load on the compressor intake pipe, ensuring that the refrigerant entering the compressor is in a pure gaseous state. Through extensive calibration, the optimal electronic expansion valve opening percentage (X%) and battery water pump duty cycle (Y%) are determined. At the same time, the frosting mode time is reduced, and the operation time is set to the first preset duration.
[0049] It should be noted that the preset electronic expansion valve opening degree and preset duty cycle are set by those skilled in the art according to the actual situation, and are not specifically limited here.
[0050] This application embodiment can simultaneously turn on the compressor, activate the battery cooler of the car air conditioner with a preset electronic expansion valve opening, and activate the battery water pump of the car air conditioner with a preset duty cycle, thereby further protecting the compressor, preventing liquid slugging, and avoiding damage to the air conditioning equipment.
[0051] In step S103, after running for a first preset duration, the car air conditioner is controlled to enter defrost mode and run for a second preset duration.
[0052] It is understood that the second preset duration in this application embodiment is the continuous running time of the air conditioner in the defrosting mode when it enters the self-cleaning mode. It can be achieved by controlling the vehicle air conditioner to heat up in order to melt the frost obtained in the above steps in the frosting mode, and the second preset duration is used as the running time.
[0053] It should be noted that the second preset duration can be set by those skilled in the art according to the actual situation, and is not specifically limited here.
[0054] The embodiments of this application can control the car air conditioner to enter the defrost mode and continue to run for a second preset duration after running for a first preset duration, thereby further realizing the automated cleaning process of the vehicle air conditioner and making it more practical.
[0055] Optionally, in one embodiment of this application, controlling the car air conditioner to enter defrost mode and continue to run for a second preset duration includes: turning on the heating function of the car air conditioner, turning the hot / cold air damper of the car air conditioner to a preset position, and controlling the blower of the car air conditioner to deliver air at a preset level.
[0056] It is understood that, in the embodiments of this application, after the frosting mode process ends, the car air conditioning compressor, battery cooler and battery water pump can be turned off, and the car air conditioning heating function can be turned on, so that the hot and cold air damper is turned to a preset position, such as the middle of the vehicle, to heat the frost on the surface of the evaporator, and the blower is controlled to deliver air at a preset level, and the operation continues for a second preset duration.
[0057] It should be noted that the preset position and preset air supply level are set by those skilled in the art according to the actual situation, and no specific limitation is made here.
[0058] This embodiment of the application can simultaneously turn on the heating function of the car air conditioner, open the air conditioning damper to a preset position, and control the blower of the car air conditioner to deliver air at a preset level, thereby making full use of the car air conditioning function to achieve a self-cleaning process and making air conditioning cleaning more convenient.
[0059] In step S104, after running for a second preset duration, the car air conditioner is controlled to enter the ventilation mode and run for a third preset duration until an end command is received from the car air conditioner or after running for the third preset duration, the air conditioner exits the self-cleaning mode.
[0060] It is understood that the third preset duration in this application embodiment is the continuous running duration of the air conditioner entering the ventilation mode in the self-cleaning mode. The air conditioner self-cleaning mode can be terminated after receiving the "air conditioner self-cleaning" off signal sent by the user through the CAN bus, or after the ventilation mode process is terminated after the third preset duration is completed.
[0061] It should be noted that the third preset duration can be set by those skilled in the art according to the actual situation, and is not specifically limited here.
[0062] This embodiment of the application can control the car air conditioner to enter the ventilation mode and continue to run for a third preset duration after running for a second preset duration, until a termination command is received from the car air conditioner or after running for the third preset duration, and then exit the air conditioner self-cleaning mode, thereby completing a convenient and efficient car air conditioner self-cleaning, improving the user experience and enhancing the intelligence level of the air conditioner cleaning process.
[0063] Optionally, in one embodiment of this application, controlling the car air conditioner to enter ventilation mode and run continuously for a third preset duration includes: turning off the heating function of the car air conditioner and controlling the blower of the car air conditioner to deliver air at the maximum speed.
[0064] In some embodiments, after the defrosting process ends, the vehicle's air conditioning heating can be stopped, and the blower can be controlled to deliver air at its maximum speed. The vehicle's air conditioning can then run continuously for a third preset duration. When the third preset duration ends, or when the vehicle diagnostic tool sends an "air conditioning self-cleaning" off signal via the CAN bus, the "air conditioning self-cleaning" mode is exited, the air conditioning control logic returns to the vehicle's original state, and the air conditioning self-cleaning is complete.
[0065] This application embodiment can turn off the heating function of the car air conditioner and control the blower of the car air conditioner to deliver air at the maximum speed, thereby further completing the self-cleaning process of the car air conditioner, ensuring the safety of the air conditioning equipment, and quickly achieving air conditioner cleaning.
[0066] The working content of the embodiments of this application will be described in detail below with a specific example.
[0067] like Figure 2 The diagram illustrates the self-cleaning process of an automotive air conditioner according to an embodiment of this application. First, the automotive diagnostic tool sends an "Air Conditioner Self-Cleaning" active signal via the CAN bus. Upon receiving this signal, the thermal management controller enters the "Air Conditioner Self-Cleaning" mode. The normal air conditioning system control logic is modified, and the air conditioning setting is changed to LOW, face / foot blowing mode, and fan speed level 1. At this time, the evaporator insulation temperature is 7°C lower than the evaporator protection temperature T0 under normal logic.
[0068] Secondly, after entering the air conditioning self-cleaning mode, the car's air conditioning is controlled to enter the frosting mode and run at time T1. The car's air conditioning automatically turns on the battery cooler and battery water pump, increasing the load on the compressor intake pipe to ensure that the refrigerant entering the compressor is pure gaseous. Through extensive calibration, the opening degree of the electronic expansion valve is confirmed to be X%, and the duty cycle of the battery water pump is Y%.
[0069] Next, after the frosting mode has run for a certain period, the car's air conditioning system is switched to defrosting mode for a duration of T2. At this time, the compressor, battery cooler, and battery water pump are turned off, the car's air conditioning heating function is turned on, the hot / cold air damper is set to the middle position, the frost on the evaporator surface is heated, and the blower is controlled to blow air to defrost.
[0070] Next, after the defrosting mode has run for a certain period, the car's air conditioning is switched to ventilation mode and runs for time T3. The car's air conditioning shuts off heating and controls the blower to blow air at its maximum setting.
[0071] Finally, the car diagnostic tool sends an "air conditioning self-cleaning" off signal via the CAN bus to exit the "air conditioning self-cleaning" mode, ending the ventilation mode. At this point, the car's air conditioning control logic returns to its original state, and the "air conditioning self-cleaning" ends.
[0072] The self-cleaning method for automotive air conditioning proposed in this application can achieve self-cleaning of the automotive air conditioning system based on the frosting, defrosting, and ventilation modes, according to user instructions. This reduces the cost of air conditioning cleaning, ensures the safety of the air conditioning equipment, improves the efficiency of self-cleaning, and is more convenient and practical. Therefore, it solves the problems in related technologies, such as the need to add sensors to monitor airflow and in-vehicle air quality, increasing the overall vehicle cost; the complexity of the air conditioning controller software logic, which can easily cause the air conditioning to mistakenly enter self-cleaning mode; and the increased risk of damage due to prolonged evaporator frosting, making it difficult to achieve convenient and efficient self-cleaning of automotive air conditioning, failing to guarantee the safety of the air conditioning equipment, and lacking practicality.
[0073] Next, referring to the accompanying drawings, a self-cleaning device for an automotive air conditioner according to an embodiment of this application is described.
[0074] Figure 3 This is a schematic diagram of the structure of the self-cleaning device for an automotive air conditioner according to an embodiment of this application.
[0075] like Figure 3 As shown, the self-cleaning device 10 of the car air conditioner includes: a receiving module 100, a first control module 200, a second control module 300, and a third control module 400.
[0076] The receiving module 100 is used to receive the self-cleaning command of the car air conditioner.
[0077] The first control module 200 is used to control the car air conditioner to enter the frosting mode and continue to run for a first preset duration after entering the air conditioner self-cleaning mode based on the air conditioner self-cleaning command.
[0078] The second control module 300 is used to control the car air conditioner to enter the defrost mode and continue to run for the second preset duration after running for a first preset duration.
[0079] The third control module 400 is used to control the car air conditioner to enter the ventilation mode and continue to run for a third preset duration after running for a second preset duration, until it receives an end command from the car air conditioner or exits the air conditioner self-cleaning mode after running for the third preset duration.
[0080] Optionally, in one embodiment of this application, the receiving module 100 includes an acquisition unit.
[0081] The acquisition unit is used to acquire the self-cleaning command uploaded by the vehicle fault diagnostic tool from the CAN network.
[0082] Optionally, in one embodiment of this application, the first control module 200 includes: a first activation unit.
[0083] The first activation unit is used to activate the battery cooler of the car air conditioner at a preset electronic expansion valve opening degree while activating the compressor, and to activate the battery water pump of the car air conditioner at a preset duty cycle.
[0084] Optionally, in one embodiment of this application, the second control module 300 includes a second activation unit.
[0085] The second opening unit is used to turn on the heating function of the car air conditioner, open the hot / cold air damper of the car air conditioner to a preset position, and control the blower of the car air conditioner to deliver air at a preset level.
[0086] Optionally, in one embodiment of this application, the third control module 400 includes an air supply unit.
[0087] The air supply unit is used to turn off the heating function of the car's air conditioning and control the blower of the car's air conditioning to supply air at the maximum speed.
[0088] It should be noted that the explanation of the above-mentioned self-cleaning method embodiment for automotive air conditioning also applies to the self-cleaning device for automotive air conditioning in this embodiment, and will not be repeated here.
[0089] The self-cleaning device for automotive air conditioning proposed in this application can achieve self-cleaning of the automotive air conditioning system based on the frosting, defrosting, and ventilation modes, according to user instructions. This reduces the cost of air conditioning cleaning, ensures the safety of the air conditioning equipment, improves the efficiency of self-cleaning, and is more convenient and practical. Therefore, it solves the problems in related technologies, such as the need to add sensors to monitor airflow and in-vehicle air quality, increasing the overall vehicle cost; the complexity of the air conditioning controller software logic, which can easily cause the air conditioning to mistakenly enter self-cleaning mode; and the increased risk of damage due to prolonged evaporator frosting, making it difficult to achieve convenient and efficient self-cleaning of the automotive air conditioning system, failing to guarantee the safety of the air conditioning equipment, and lacking practicality.
[0090] Figure 4 A schematic diagram of the structure of a thermal management controller provided in an embodiment of this application. The thermal management controller may include:
[0091] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.
[0092] When the processor 402 executes the program, it implements the self-cleaning method for the automotive air conditioner provided in the above embodiments.
[0093] Furthermore, the thermal management controller also includes:
[0094] Communication interface 403 is used for communication between memory 401 and processor 402.
[0095] The memory 401 is used to store computer programs that can run on the processor 402.
[0096] The memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.
[0097] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be divided into address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.
[0098] Alternatively, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.
[0099] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.
[0100] This embodiment also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described self-cleaning method for automotive air conditioning.
[0101] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0102] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0103] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.
[0104] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0105] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0106] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
[0107] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0108] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. A self-cleaning method for automotive air conditioning, characterized in that, Applied to a thermal management controller, the method includes the following steps: Receives self-cleaning commands from the car's air conditioning system; After entering the air conditioner self-cleaning mode based on the air conditioner self-cleaning command, the car air conditioner is controlled to enter the frosting mode and run continuously for a first preset duration. The control of the car air conditioner to enter the frosting mode and continue to operate for a first preset duration includes: At the same time as the compressor is turned on, the battery cooler of the car air conditioner is turned on with a preset electronic expansion valve opening, and the battery water pump of the car air conditioner is turned on with a preset duty cycle. Increase the load on the compressor intake pipe to ensure that the refrigerant entering the compressor is in a pure gaseous state; After running for the first preset duration, the car air conditioner is controlled to enter the defrost mode and run for the second preset duration. Turn off the compressor, the battery cooler and the battery water pump, turn on the car air conditioning heating function, turn the hot and cold air damper to the middle position, heat the frost on the evaporator surface, and control the blower to blow air to defrost; After running for the second preset duration, the car air conditioner is controlled to enter the ventilation mode and continue to run for the third preset duration until an end command is received from the car air conditioner or after running for the third preset duration, at which point the air conditioner exits the self-cleaning mode.
2. The method according to claim 1, characterized in that, The receiving of the self-cleaning command from the car air conditioner includes: The self-cleaning command uploaded by the vehicle diagnostic tool is obtained from the CAN network.
3. The method according to claim 1, characterized in that, The control of the car air conditioning to enter defrost mode and continue to operate for a second preset duration includes: While turning on the heating function of the car air conditioner, the hot / cold air damper of the car air conditioner is turned to a preset position, and the blower of the car air conditioner is controlled to deliver air at a preset level.
4. The method according to claim 1, characterized in that, The control of the car's air conditioning to enter ventilation mode and continue operating for a third preset duration includes: Turn off the heating function of the car's air conditioning and control the blower of the car's air conditioning to blow air at the maximum speed.
5. A self-cleaning device for an automotive air conditioner, characterized in that, A method for implementing the self-cleaning of an automotive air conditioner as described in any one of claims 1-4, applied to a thermal management controller, wherein the device comprises: The receiving module is used to receive the self-cleaning command from the car's air conditioning system. The first control module is used to control the car air conditioner to enter the frosting mode and continue to run for a first preset duration after entering the air conditioner self-cleaning mode based on the air conditioner self-cleaning command. The second control module is used to control the car air conditioner to enter the defrost mode and continue to run for the second preset duration after the first preset duration has been continuously run. The third control module is used to control the car air conditioner to enter the ventilation mode and continue to run for the third preset duration after the second preset duration has been continuously run, until the end command is received from the car air conditioner or the self-cleaning mode of the air conditioner is exited after the third preset duration has been run.
6. The apparatus according to claim 5, characterized in that, The receiving module includes: The acquisition unit is used to acquire the self-cleaning command uploaded by the vehicle fault diagnostic tool from the CAN network.
7. The apparatus according to claim 5, characterized in that, The third control module includes: The air supply unit is used to turn off the heating function of the car air conditioner and control the blower of the car air conditioner to supply air at the maximum speed.
8. A thermal management controller, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the self-cleaning method for an automotive air conditioner as described in any one of claims 1-4.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the self-cleaning method for an automotive air conditioner as described in any one of claims 1-4.