Electronic regulator of vehicle-mounted air conditioner compressor

Abstract

The utility model relates to the technical field of automobile air-conditioning system control, in particular to an electronic regulator of a vehicle-mounted air-conditioning compressor, which comprises an input interface module, a processing unit, a driving module, a communication interface module, a power management module and a user interface module. The electronic regulation and control solution of the air conditioner compressor is high in energy efficiency, quick in response, accurate in control, intelligent in function and stable in system.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning system control, in particular to an electronic controller for an on-board air-conditioning compressor. Background Art

[0002] With the rapid development of the automotive industry, the performance and efficiency of vehicle air conditioning systems, as an important component for improving passenger comfort, have attracted much attention. Traditional vehicle air conditioning compressor control mainly relies on mechanical or simple electronic control methods.

[0003] These control methods have certain limitations in the following aspects:

[0004] Slow response: When the temperature changes, the traditional control method has a delay in starting and stopping the compressor, which cannot quickly respond to passenger needs.

[0005] Low energy efficiency: Due to the lack of intelligent regulation, the compressor often runs at constant power, resulting in high energy consumption and reduced overall energy efficiency.

[0006] Lack of precise control: Traditional control methods have limited control accuracy for temperature and humidity, and cannot achieve fine-grained adjustment, which affects ride comfort.

[0007] Complex maintenance: Mechanical control components wear out quickly, resulting in high maintenance and replacement costs, which affects the long-term stability of the system;

[0008] Therefore, in view of the above-mentioned problems, the present technical solution proposes an electronic controller for a vehicle-mounted air-conditioning compressor. Utility Model Content

[0009] The purpose of the present utility model is to provide an electronic controller for a vehicle air-conditioning compressor to solve the problems raised in the above background technology.

[0010] To achieve the above object, the present utility model provides the following technical solutions: vehicle air conditioning compressor electronic controller, comprising: an input interface module for receiving various sensor signals from the vehicle air conditioning system;

[0011] Processing unit: includes a microprocessor and memory, responsible for receiving and processing sensor signals and generating control instructions according to the preset control algorithm;

[0012] Drive module: drives the compressor to start, stop and adjust the operating speed according to the control instructions generated by the processing unit;

[0013] Communication interface module: including CAN bus, Bluetooth module or Wi-Fi module, used for data communication with the in-vehicle infotainment system or mobile devices;

[0014] Power management module: responsible for providing stable power supply for the entire regulator and has overvoltage and overcurrent protection functions;

[0015] User interface module: includes a display screen and operating buttons or a touch screen, allowing users to set and adjust air conditioning parameters and display system status and operating information.

[0016] Preferably, the input interface module includes a temperature sensor interface for receiving temperature data inside and outside the vehicle, a humidity sensor interface for judging the cooling or heating requirements of the air-conditioning system, a pressure sensor interface for adjusting the dehumidification function of the air-conditioning system, and a user input interface for receiving set values ​​and operation instructions input by the user through the interface module.

[0017] Preferably, the processing unit functions include: signal processing: filtering, amplifying and digitizing the received sensor signal;

[0018] Control algorithm: based on preset control strategy;

[0019] Data storage: Store historical data and system parameters.

[0020] Preferably, the processing unit has multiple built-in intelligent control algorithms, including: PID control algorithm, fuzzy control algorithm, and self-learning algorithm.

[0021] Preferably, the driving module includes a power driving circuit, PWM control, and overload protection.

[0022] Preferably, the design of the power drive circuit includes the selection of drive components: selecting an N-channel MOSFET with low on-resistance and high switching speed and a gate drive circuit.

[0023] Preferably, the CAN bus supports communication with other electronic systems of the vehicle;

[0024] Bluetooth module supports wireless connection with smartphones or tablets;

[0025] The Wi-Fi module supports the connection between the in-vehicle infotainment system and the external network.

[0026] Preferably, the power management module includes: a voltage-stabilized power supply, a power filter circuit, and overvoltage and overcurrent protection.

[0027] Preferably, the display screen adopts a liquid crystal display (LCD) or an organic light emitting diode display (OLED), and the operation button / touch screen provides multiple input modes.

[0028] Compared with the existing technology, the beneficial effects of the present invention are: by integrating intelligent control algorithms and advanced electronic components, an efficient, accurate and intelligent electronic controller for vehicle air-conditioning compressor is provided, which has the following beneficial effects:

[0029] High energy efficiency: Dynamically adjust the operating status of the compressor through intelligent algorithms to achieve energy saving and consumption reduction, thereby extending the vehicle's range.

[0030] Fast response: The compressor starts and stops more quickly, which can quickly respond to passengers' temperature and humidity needs and improve riding comfort.

[0031] Precise control: Through high-precision sensors and intelligent algorithms, fine-tuning of the in-vehicle environment is achieved, providing stable temperature and humidity control.

[0032] Intelligent function: supports remote control and monitoring. Users can adjust air conditioning parameters at any time through mobile devices to improve convenience.

[0033] High system stability: The use of electronic control reduces wear of mechanical components and improves the long-term stability and reliability of the system.

[0034] Easy to maintain: Modular design facilitates system inspection and maintenance, reducing maintenance costs and time.

[0035] User-friendly: The humanized user interface design makes it easy for users to operate and intuitively view the system status, thus improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is the architectural diagram of the electronic controller for the vehicle air-conditioning compressor. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] See also Figure 1 The vehicle air-conditioning compressor electronic controller includes: an input interface module for receiving various sensor signals from the vehicle air-conditioning system, wherein the sensor signal types include temperature sensors, humidity sensors, pressure sensors, etc.

[0042] Processing unit: includes a microprocessor and memory, responsible for receiving and processing sensor signals and generating control instructions according to the preset control algorithm;

[0043] Drive module: drives the compressor to start, stop and adjust the operating speed according to the control instructions generated by the processing unit;

[0044] Communication interface module: including CAN bus, Bluetooth module or Wi-Fi module, used for data communication with the in-vehicle infotainment system or mobile device to achieve remote control and monitoring;

[0045] Power management module: responsible for providing stable power supply for the entire regulator, and has overvoltage and overcurrent protection functions to ensure safe operation of the system;

[0046] User interface module: includes a display screen and operating buttons or a touch screen, allowing users to set and adjust air conditioning parameters and display system status and operating information.

[0047] In an embodiment of the present invention, the input interface module includes a temperature sensor interface: receiving temperature data inside and outside the vehicle for determining the cooling or heating demand of the air-conditioning system; a humidity sensor interface: receiving humidity data inside the vehicle for adjusting the dehumidification function of the air-conditioning system; a pressure sensor interface: monitoring pressure changes in the system to ensure that the air-conditioning system operates within a safe range; and a user input interface: receiving set values ​​and operating instructions input by the user through the interface module;

[0048] The user input interface includes:

[0049] Button interface: includes multi-function buttons for user operations such as mode selection, temperature adjustment and fan speed control.

[0050] Touch screen interface: If a touch screen design is used, it must support multi-touch and operations such as sliding and clicking to provide an intuitive user interaction experience.

[0051] Signal interface: Anti-shake circuit and filtering circuit are used to ensure the accuracy and stability of user input signals.

[0052] In one embodiment of the present invention, the specific functions of the processing unit include: signal processing: filtering, amplifying and digitizing the received sensor signal to extract useful information.

[0053] Control algorithm: Based on preset control strategies, such as PID control and fuzzy control, the operating status and adjustment parameters of the compressor are calculated.

[0054] Data storage: Stores historical data and system parameters to support system self-learning and optimization.

[0055] Specifically, the microprocessor is the core of the processing unit, responsible for receiving and processing sensor signals, executing control algorithms, and generating drive instructions. The specific design includes:

[0056] Processor model: High-performance, low-power 32-bit ARM Cortex-M series microprocessor with rich peripheral interfaces and efficient computing capabilities.

[0057] Clock frequency: Set to 100MHz to ensure that the processor can process high-frequency sensor data and control instructions in real time.

[0058] Power consumption management: supports multiple low-power modes, optimizes system energy consumption performance, and extends battery life;

[0059] The memory is used to store control algorithms, system parameters, and historical data. The specific design includes:

[0060] Flash memory: used to store program code and system firmware, with a capacity of 256KB and supports fast reading and writing.

[0061] SRAM: Used to store temporary data and runtime variables, with a capacity of 64KB, ensuring high-speed data processing.

[0062] EEPROM: used to store user settings and system configuration parameters, with a capacity of 32KB and supports non-volatile storage to ensure that data is not lost after power failure;

[0063] The processing unit has built-in multiple intelligent control algorithms, including:

[0064] PID control algorithm: Based on temperature and humidity sensor data, it adjusts the operating status of the compressor to maintain a stable in-vehicle environment;

[0065] The PID (Proportional-Integral-Derivative) control algorithm is used to achieve precise control of the compressor speed, ensuring stable temperature and humidity inside the vehicle.

[0066] Proportional control (P): According to the deviation between the current temperature and the set temperature, the operating power of the compressor is adjusted to achieve rapid response.

[0067] Integral control (I): Accumulates historical deviations to eliminate the steady-state error of the system and ensure that the temperature and humidity accurately reach the set values.

[0068] Differential control (D): Based on the rate of change of the deviation, predict the future trend of the system and adjust the control instructions to avoid system overshoot and oscillation;

[0069] Fuzzy control algorithm: Combining multi-dimensional data such as temperature, humidity and pressure, fuzzy logic judgment is performed to achieve more flexible and intelligent control;

[0070] Fuzzy logic rules: Based on expert experience and system requirements, fuzzy control rules are set, such as "if the temperature is high and the humidity is high, increase the compressor power."

[0071] Fuzzy reasoning: Through the fuzzy reasoning engine, multiple sensor data are integrated to generate adaptive control instructions and improve the intelligence level of the system.

[0072] Adaptive adjustment: Dynamically adjust fuzzy control rules and parameters according to system operation to adapt to different driving environments and user needs;

[0073] Self-learning algorithm: Optimizes control parameters based on historical data and user habits to improve the system's adaptability and user experience.

[0074] Data collection: Record users’ air conditioning setting habits and system operation data to establish user behavior models.

[0075] Parameter optimization: Through machine learning algorithms, historical data is analyzed to optimize PID and fuzzy control parameters to improve the control accuracy and response speed of the system.

[0076] Prediction and adjustment: Based on user usage patterns, predict future air conditioning demand, adjust system parameters in advance, and improve user experience.

[0077] The processing unit is also responsible for real-time processing of the received sensor data, including:

[0078] Data filtering: Use digital filtering technology to remove noise and interference in sensor data and improve data accuracy.

[0079] Data correction: Through the calibration algorithm, the offset and gain errors of the sensor are eliminated to ensure the linearity and consistency of the data.

[0080] Data storage and backtracking: Record key data and system status to support fault diagnosis and system optimization.

[0081] As a preferred embodiment of the present invention, the drive module includes a power drive circuit: using power switching elements such as MOSFET or IGBT to achieve efficient drive of the compressor motor. PWM control: using pulse width modulation technology to accurately control the speed of the compressor motor, achieving energy saving and precise regulation. Overload protection: built-in overload protection circuit to prevent damage to the compressor due to overload operation;

[0082] Specifically, the design of the power drive circuit includes the selection of drive components: using N-channel MOSFETs with low on-resistance and high switching speed, such as IRLZ44N, to ensure drive efficiency and response speed.

[0083] Gate drive circuit: Use a dedicated gate drive chip, such as IR2101, to provide sufficient gate voltage and current to ensure fast switching of the drive components.

[0084] Inverter protection: diodes and RC snubber circuits are used to prevent inverter current from damaging the drive components.

[0085] The specific design of PWM control includes:

[0086] PWM signal generation: The processing unit generates a high-precision PWM signal to control the switching frequency and duty cycle of the compressor motor.

[0087] PWM regulation mechanism: Dynamically adjust the duty cycle of the PWM signal based on sensor data and control algorithms to achieve precise regulation of the compressor speed.

[0088] Filter circuit: Add a low-pass filter to the PWM signal output to smooth the PWM waveform, reduce electromagnetic interference (EMI), and improve system stability;

[0089] Overload protection, the specific design includes:

[0090] Current detection: Use a Hall effect current sensor, such as the ACS712, to monitor the compressor current in real time and detect overload conditions.

[0091] Protection mechanism: When it is detected that the current exceeds the set threshold, the drive module automatically cuts off the power supply and stops the compressor to prevent overload damage.

[0092] Alarm system: Transmits overload status information to the in-vehicle infotainment system or user interface through the communication interface module, prompting the user to take appropriate measures.

[0093] As a preferred embodiment of the present invention, a CAN bus, a Bluetooth module or a Wi-Fi module; the CAN bus enables communication with other electronic systems of the vehicle, such as the vehicle control unit (ECU), to achieve data sharing and system collaboration;

[0094] Bluetooth module: supports wireless connection with smartphones or tablets, allowing users to remotely control and monitor via mobile devices.

[0095] Wi-Fi module: Provides higher bandwidth data transmission, supports the connection between the in-vehicle infotainment system and external networks, and realizes online updates and remote diagnosis.

[0096] As a preferred embodiment of the present invention, the power management module includes:

[0097] Regulated power supply: Uses an efficient DC-DC converter to convert the vehicle power supply (usually 12V or 24V) into the voltage levels required by the module (such as 3.3V, 5V, etc.).

[0098] Power supply filter circuit: includes inductors, capacitors and filters to filter out high-frequency noise and ripple in the power supply to ensure the purity and stability of the power supply to each module.

[0099] Overvoltage and overcurrent protection: Fuses, transient voltage suppressor diodes (TVS), and current limiting circuits are used to protect the power supply from overvoltage and overcurrent, preventing power failures from damaging the module.

[0100] As a preferred embodiment of the present invention, the display screen adopts a liquid crystal display (LCD) or an organic light emitting diode display (OLED) to display information such as the temperature and humidity inside and outside the vehicle, and the operating status of the compressor in real time.

[0101] The operation button / touch screen provides multiple input methods, allowing users to set temperature, select mode (cooling, heating, dehumidification, etc.) and adjust fan speed through buttons or touch operation interface.

[0102] In order to better understand the application effect of the present invention, the following describes in detail the performance of the electronic controller of the vehicle air-conditioning compressor in actual application through specific application cases;

[0103] Case 1: Intelligent air conditioning control for urban commuter vehicles

[0104] Company Background

[0105] A city commuter vehicle manufacturer wanted to improve vehicle energy efficiency and ride comfort while reducing energy consumption and extending battery life by upgrading the air conditioning system.

[0106] Application Process

[0107] Module integration: Integrate the electronic controller of the vehicle air-conditioning compressor into the air-conditioning system of urban commuter vehicles, replacing the original mechanical controller.

[0108] Sensor installation: Install high-precision temperature sensors, humidity sensors, and pressure sensors in the car to monitor the environment inside and outside the car in real time.

[0109] System configuration: Through the user interface module, set the air conditioner's operating mode (cooling, heating, dehumidification) and target temperature, and the system automatically adjusts the operating status of the compressor.

[0110] Remote Control: Through Bluetooth and Wi-Fi modules, it enables wireless connection to the driver's smartphone, allowing the driver to remotely adjust the air conditioning settings through a mobile phone application.

[0111] Effect evaluation

[0112] By applying the present invention, the air conditioning system of urban commuter vehicles achieves the following improvements:

[0113] Improved energy efficiency: The compressor operates more efficiently, reducing energy consumption by 20%, significantly extending the range of electric vehicles.

[0114] Faster response: The air-conditioning system can quickly adjust the operating status of the compressor when the temperature changes, improving ride comfort.

[0115] Enhanced system stability: Electronic control reduces mechanical failures and improves the long-term stability and reliability of the air conditioning system.

[0116] Improved user experience: Through the remote control function of the smartphone application, drivers can adjust the air conditioning settings more conveniently, improving the user experience.

[0117] Case 2: Intelligent air conditioning system for high-end commercial vehicles

[0118] Company Background

[0119] A high-end commercial vehicle manufacturer is committed to providing users with a luxurious and comfortable riding experience and hopes to enhance the competitiveness of its vehicles through an intelligent air-conditioning system.

[0120] Application Process

[0121] Module integration: Integrate the electronic controller of the vehicle air-conditioning compressor into the air-conditioning system of high-end commercial vehicles, replacing the traditional mechanical controller.

[0122] Advanced sensor configuration: High-precision temperature, humidity, and pressure sensors are installed in multiple locations inside the vehicle to comprehensively monitor the interior environment.

[0123] Intelligent control algorithm: Configure the self-learning algorithm, and the system automatically optimizes control parameters according to user usage habits and historical data to improve the system's adaptability.

[0124] Advanced User Interface: Provides a more intuitive and convenient user operation experience through touch screen and voice control interface, and supports personalized air conditioning settings.

[0125] Effect evaluation

[0126] By applying this utility model, the air conditioning system of high-end commercial vehicles has achieved the following improvements:

[0127] Precise control: The system can accurately control the temperature and humidity inside the vehicle, providing a stable and comfortable riding environment.

[0128] Intelligent optimization: The self-learning algorithm automatically adjusts air conditioning parameters according to user habits and environmental changes, improving the intelligence level of the system.

[0129] Energy saving and consumption reduction: Through intelligent regulation, the compressor operates more efficiently, energy consumption is reduced by 15%, and the overall energy efficiency of the vehicle is improved.

[0130] Improved user experience: Advanced user interface and voice control functions provide a more convenient and high-end user operation experience, enhancing user satisfaction.

[0131] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. The electronic controller of the vehicle air-conditioning compressor is characterized in that: include: Input interface module for receiving various sensor signals from the vehicle air conditioning system; Processing unit: includes a microprocessor and memory, responsible for receiving and processing sensor signals and generating control instructions according to the preset control algorithm; Drive module: drives the compressor to start, stop and adjust the operating speed according to the control instructions generated by the processing unit; Communication interface module: including CAN bus, Bluetooth module or Wi-Fi module, used for data communication with the in-vehicle infotainment system or mobile devices; Power management module: responsible for providing stable power supply for the entire regulator and has overvoltage and overcurrent protection functions; User interface module: includes a display screen and operating buttons or a touch screen, allowing users to set and adjust air conditioning parameters and display system status and operating information.

2. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The input interface module includes a temperature sensor interface for receiving temperature data inside and outside the vehicle, a humidity sensor interface for judging the cooling or heating requirements of the air-conditioning system, a pressure sensor interface for adjusting the dehumidification function of the air-conditioning system, and a user input interface for receiving set values ​​and operation instructions input by the user through the interface module.

3. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The processing unit functions include: signal processing: filtering, amplifying and digitizing the received sensor signal; Control algorithm: based on preset control strategy; Data storage: Store historical data and system parameters.

4. The electronic controller for the vehicle air-conditioning compressor according to claim 3, characterized in that: The processing unit has multiple built-in intelligent control algorithms, including: PID control algorithm, fuzzy control algorithm, and self-learning algorithm.

5. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The driving module includes a power driving circuit, PWM control, and overload protection.

6. The electronic controller for the vehicle air-conditioning compressor according to claim 5, characterized in that: The design of the power drive circuit includes the selection of drive components: selecting N-channel MOSFET with low on-resistance and high switching speed and gate drive circuit.

7. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The CAN bus supports communication with other electronic systems of the vehicle; Bluetooth module supports wireless connection with smartphones or tablets; The Wi-Fi module supports the connection between the in-vehicle infotainment system and the external network.

8. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The power management module includes: a voltage-stabilized power supply, a power filter circuit, and overvoltage and overcurrent protection.

9. The electronic controller for the vehicle air-conditioning compressor according to claim 1, characterized in that: The display screen adopts a liquid crystal display (LCD) or an organic light emitting diode display (OLED), and the operation button / touch screen provides multiple input modes.

Images