Battery-driven oil-cooled screw air compressor based on Internet of Things and control system thereof

Abstract

The utility model discloses a battery-driven oil-cooled screw air compressor based on the Internet of Things and a control system of the battery-driven oil-cooled screw air compressor. The oil-cooled screw air compressor comprises a compressor body, a driving motor, an inverter, a battery pack, an oil cooling system, an Internet of Things module and a control module. The battery pack is connected with the inverter and provides electric energy needed by work for the compressor body, the driving motor, the oil cooling system and the Internet of Things module. The oil cooling system comprises an oil storage container and an oil cooler; the compressed air conveys cooling oil in the oil storage container to the compressor body for cooling, and the oil cooler cools the cooling oil. The system is efficient, energy-saving, environment-friendly, low in noise and low in maintenance cost, can be intelligently controlled, and is beneficial to reducing energy consumption; the air compressor is portable and flexible, the battery-driven oil-cooled screw air compressor is not limited by a power grid and can be used anytime and anywhere, and the portability and the flexibility of equipment are improved.

Description

Technical Field

[0001] This utility model belongs to the field of compression equipment technology, and relates to a screw compressor, and more particularly to a battery-driven oil-cooled screw air compressor based on the Internet of Things and its control system. Background Technology

[0002] Traditional screw air compressors are mostly powered by the power grid, and their drive motors rely on air-cooling or water-cooling systems for heat dissipation. However, these methods suffer from high energy consumption, high maintenance costs, and limited cooling effectiveness. The use of traditional air compressors is severely restricted, especially in remote areas or environments with unstable power supplies. Furthermore, traditional air compressors lack intelligent management, making remote monitoring and precise control of the equipment difficult.

[0003] In view of this, there is an urgent need to design a new air compressor in order to overcome at least some of the aforementioned defects of existing air compressors. Utility Model Content

[0004] This invention provides a battery-driven oil-cooled screw air compressor and its control system based on the Internet of Things, which enables the compressor to consume less energy and be more efficient during operation; it can achieve intelligent management and make intelligent adjustments according to actual needs, further reducing energy consumption.

[0005] To solve the above-mentioned technical problems, according to one aspect of this utility model, the following technical solution is adopted:

[0006] An oil-cooled screw air compressor includes: a compressor body, a battery pack, an oil cooling system, an Internet of Things (IoT) module, and a control module;

[0007] The drive motor is connected to the compressor body to provide it with a power source; the battery pack is connected to the inverter, which is connected to the compressor body, oil cooling system, IoT module and control module to provide the power required for the compressor body, oil cooling system, IoT module and control module to work.

[0008] The oil cooling system includes an oil storage container and an oil cooler; compressed air delivers the cooling oil in the oil storage container to the compressor body for cooling, while the oil cooler cools the oil to a lower temperature.

[0009] The IoT module is connected to the compressor body to collect the compressor's set data in real time and transmit the data to the control module;

[0010] The control module is connected to the compressor body, drive motor, oil cooling system and Internet of Things module respectively; the control module is used to analyze the energy consumption mode of the oil-cooled screw air compressor based on the collected data, and automatically adjust the working state of the oil-cooled screw air compressor according to the analysis results.

[0011] In one embodiment of this utility model, the oil-cooled screw air compressor further includes a mobile platform, and the compressor body, drive motor, battery pack, inverter, oil cooling system, Internet of Things module and control module are set based on the mobile platform.

[0012] As one embodiment of this utility model, the control module includes an intelligent control mathematical model construction module;

[0013] The intelligent control module is used to analyze the energy consumption mode of the oil-cooled screw air compressor based on the collected data, and automatically adjust the working state of the oil-cooled screw air compressor according to the analysis results;

[0014] The intelligent control mathematical model construction module is used to construct an intelligent control mathematical model; the intelligent control mathematical model construction module selects sample data and performs data preprocessing; it extracts and selects features from the preprocessed data, constructs an intelligent control mathematical model, and optimizes the constructed mathematical model; wherein, the extracted features include set data that can characterize the compressor's operating status.

[0015] The control module is connected to a working mode feature database, which assigns different features to the compressor's working modes. When performing feature extraction, the intelligent control mathematical model construction module extracts the corresponding features from the working mode feature database for the compressor's working modes.

[0016] In one embodiment of this utility model, the compressor body adopts a screw compressor structure, including a female rotor, a male rotor, bearings, and a housing; the female rotor and the male rotor mesh with each other inside the housing, and compress air into high-pressure gas by rotation;

[0017] The battery pack uses high-performance lithium-ion batteries and is connected to the compressor body via wires. The battery pack is equipped with an advanced battery management system (BMS) that monitors the battery pack's power, temperature, and other statuses in real time to ensure safe operation. When the battery pack's power is low, the BMS will issue an alarm signal to remind the user to charge or replace the battery pack in time.

[0018] The oil cooler adopts a high-efficiency heat dissipation structure such as a finned radiator or a heat pipe radiator to improve cooling efficiency; the cooling oil circulates between the compressor body and the oil cooler to achieve continuous cooling of the compressor.

[0019] In one embodiment of this utility model, the Internet of Things module is used to acquire the operating status of the compressor; the control module automatically adjusts the speed of the compressed air and the cooling intensity of the oil cooler according to the operating status of the compressor to achieve precise control;

[0020] The IoT module collects real-time operating data of the compressor, including temperature, pressure, and current; the IoT module transmits the data to the IoT platform wirelessly; users can remotely monitor the compressor's operating status through a mobile app or web page, including viewing real-time data, historical data, and alarm information.

[0021] In one embodiment of this utility model, the control module includes a power control circuit, a main control circuit, a BOOT mode control circuit, a PT bridge sampling arm control circuit, an input temperature measurement circuit, an input current measurement circuit, an input analog quantity circuit, and an input switch quantity circuit. The main control circuit is connected to the power control circuit, the BOOT mode control circuit, the PT bridge sampling arm control circuit, the input temperature measurement circuit, the input current measurement circuit, the input analog quantity circuit, and the input switch quantity circuit, respectively.

[0022] The power control circuit includes a third and fourth chip U34, a third and second inductor L32, a third capacitor C3, a fourth capacitor C4, a second and sixth zero capacitor C260, a second and sixth one capacitor C261, a second and sixth four capacitor C264, a second and sixth five capacitor C265, a third and second one resistor R321, a third and second two resistor R322, and a third and second three resistor R323.

[0023] The fourth pin of the third and fourth chip U34 is connected to the 5V power supply voltage, the first terminal of the second 60-cell capacitor C260, and the first terminal of the third capacitor C3; the second terminal of the second 60-cell capacitor C260 and the second terminal of the third capacitor C3 are respectively grounded.

[0024] The fifth pin of the third and fourth chip U34 is connected to the second end of the third two-two resistor R322, the second end of the second six-four capacitor C264, and the first end of the third two-one resistor R321; the second end of the third two-one resistor R321 is connected to the second end of the third two-three resistor R323, and the first end of the third two-three resistor R323 is grounded.

[0025] The third pin of the third fourth chip U34 is connected to the first end of the third second inductor L32. The second end of the third second inductor L32 is connected to the first end of the third second resistor R322, the first end of the second six-four capacitor C264, the first end of the second six-one capacitor C261, the first end of the second six-five capacitor C265, the first end of the fourth capacitor C4, and the 3.3V power supply voltage.

[0026] The second terminal of the second 61 capacitor C261, the second terminal of the second 65 capacitor C265, and the second terminal of the fourth capacitor C4 are respectively grounded.

[0027] The BOOT mode control circuit includes a second chip U2, a first capacitor C1, a second capacitor C2, a second 62 capacitor C262, a second 63 capacitor C263, a third 15 resistor R315, a third 16 resistor R316, a third 17 resistor R317, a third 18 resistor R318, a third 19 resistor R319, and a third 20 resistor R320.

[0028] The first terminal of the third 17 resistor R317 is connected to a 3.3V power supply voltage, and the second terminal of the third 17 resistor R317 is connected to the first terminal of the third 18 resistor R318 and the first terminal of the second 62 capacitor C262 respectively; the second terminal of the third 18 resistor R318 and the second terminal of the second 62 capacitor C262 are respectively grounded.

[0029] The first terminal of the third 15 resistor R315 is connected to a 3.3V power supply voltage, and the second terminal of the third 15 resistor R315 is connected to the first terminal of the third 16 resistor R316 and the first terminal of the second 63 capacitor C263 respectively; the second terminal of the third 16 resistor R316 and the second terminal of the second 63 capacitor C263 are respectively grounded.

[0030] The first pin of the second chip U2 is connected to the first end of the third 19 resistor R319. The second end of the third 19 resistor R319 is connected to the 3.3V power supply voltage, the first end of the first capacitor C1, and the fifth pin of the second chip U2. The second end of the first capacitor C1 is grounded.

[0031] The fourth pin of the second chip U2 is connected to the first end of the third zero-resistance R320, the second end of the third zero-resistance R320 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded.

[0032] The PT bridge sampling lower arm control circuit includes a ninth MOSFET Q9, a second third capacitor C23, a fourth resistor R4, a first fourth resistor R14, a first fifth resistor R15, a first sixth resistor R16, a first eighth resistor R18, and a second fourth resistor R24.

[0033] The gate of the ninth MOS transistor Q9 is connected to the second terminal of the first six-resistor R16 and the first terminal of the first eight-resistor R18; the second terminal of the first eight-resistor R18 is grounded; the drain of the ninth MOS transistor Q9 is connected to the second terminal of the second four-resistor R24; the first terminal of the second four-resistor R24 ​​is connected to the second terminal of the fourth resistor R4, the first terminal of the first five-resistor R15, and the first terminal of the second three-capacitor C23; the second terminal of the first five-resistor R15 is connected to the first terminal of the first four-resistor R14; the source of the ninth MOS transistor Q9, the second terminal of the first four-resistor R14, and the second terminal of the second three-capacitor C23 are grounded.

[0034] The input temperature measurement circuit includes a third diode D3, a third inductor L3, a fourth inductor L4, a first capacitor C11, a first second capacitor C12, and a fifth resistor R5.

[0035] The second end of the third diode D3 is connected to the first end of the third inductor L3. The second end of the third inductor L3 is connected to the second end of the fifth resistor R5, the first end of the first capacitor C11, and the first end of the first capacitor C12. The first end of the third diode D3 is connected to the first end of the fourth inductor L4. The second end of the fourth inductor L4, the second end of the first capacitor C11, and the second end of the first capacitor C12 are grounded.

[0036] The input current measurement circuit includes a sixth A power amplifier U6A, a sixth B power amplifier U6B, a seventh A power amplifier U7A, a seventh B power amplifier U7B, a first zero MOSFET Q10, a ninth diode D9, a fourth zero capacitor C40, a fourth first capacitor C41, a fourth second capacitor C42, a second octet capacitor C282, a first seven resistor R17, a second three resistor R23, a second five resistor R25, a second six resistor R26, a second seven resistor R27, a second eight resistor R28, a second nine resistor R29, a third zero resistor R30, a third first resistor R31, a third second resistor R32, a third third resistor R33, a third fourth resistor R34, a third fifth resistor R35, a third sixth resistor R36, and a third seventh resistor R37.

[0037] The non-inverting input terminal of the sixth power amplifier U6A is connected to the second terminal of the third resistor R33, and the inverting input terminal of the sixth power amplifier U6A is connected to the first terminal of the fourth capacitor C41, the first terminal of the second fifth resistor R25, the first terminal of the second sixth resistor R26, and the first terminal of the second ninth resistor R29, respectively; the second terminals of the fourth capacitor C41 and the second fifth resistor R25 are grounded; the output terminal of the sixth power amplifier U6A is connected to the second terminal of the second sixth resistor R26 and the first terminal of the second seventh resistor R27, respectively.

[0038] The non-inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the third fourth resistor R34; the inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the second seventh resistor R27, the first terminal of the second eighth resistor R28, the second terminal of the third zero resistor R30, and the first terminal of the fourth two capacitor C42; the first terminal of the third zero resistor R30 is connected to the second terminal of the second ninth resistor R29; the output terminal of the sixth power amplifier U6B is connected to the second terminal of the second eighth resistor R28, the second terminal of the fourth two capacitor C42, and the first terminal of the third two resistor R32.

[0039] The non-inverting input terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R32; the inverting input terminal of the seventh power amplifier U7A is connected to the first terminal of the third resistor R31, the first terminal of the second capacitor C282, the first terminal of the third resistor R36, and the first terminal of the third resistor R35; the output terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R31, the second terminal of the second capacitor C282, and the non-inverting input terminal of the seventh power amplifier U7B.

[0040] The gate of the first zero-voltage MOSFET Q10 is connected to the second terminal of the first seven-resistance R17 and the first terminal of the second three-resistance R23, respectively; the drain of the first zero-voltage MOSFET Q10 is connected to the second terminal of the third six-resistance R36, and the source of the first zero-voltage MOSFET Q10, the second terminal of the second three-resistance R23, and the second terminal of the third five-resistance R35 are respectively grounded.

[0041] The inverting input terminal of the seventh power amplifier U7B is connected to the output terminal of the seventh power amplifier U7B and the first terminal of the third seven resistor R37 respectively; the second terminal of the third seven resistor R37 is connected to the first terminal of the fourth zero capacitor C40 and the third terminal of the ninth diode D9 respectively; the second terminal of the fourth zero capacitor C40 and the first terminal of the ninth diode D9 are grounded respectively.

[0042] The input analog circuit includes a ninth power amplifier U9A, a ninth power amplifier U9B, a first zero diode D10, a first one diode D11, a first four diode D14, a first five diode D15, a first seven inductor L17, a first eight inductor L18, a seventh three capacitor C73, a seventh nine capacitor C79, a ninth eight capacitor C98, a ninth nine capacitor C99, a first zero five capacitor C105, a first zero six capacitor C106, a second eight three capacitor C283, a second eight four capacitor C284, a fifth two resistor R52, a fifth three resistor R53, a sixth zero resistor R60, a sixth one resistor R61, a sixth four resistor R64, a sixth five resistor R65, a sixth eight resistor R68, a sixth nine resistor R69, a seventh two resistor R72, and a seventh three resistor R73.

[0043] The second terminal of the first seven inductor L17 is connected to the first terminal of the seventh two resistor R72, the first terminal of the seventh three capacitor C73, the first terminal of the first zero five capacitor C105, the first and second terminals of the first four diode D14, and the first terminal of the sixth zero resistor R60; the second terminal of the seventh two resistor R72, the second terminal of the seventh three capacitor C73, the second terminal of the first zero five capacitor C105, and the third terminal of the first four diode D14 are respectively grounded;

[0044] The second end of the sixth zero resistor R60 is connected to the first end of the sixth fourth resistor R64, the first end of the second eight three capacitor C283, and the non-inverting input terminal of the ninth A power amplifier U9A; the second end of the sixth fourth resistor R64 is connected to the first end of the sixth eight resistor R68, and the second end of the sixth eight resistor R68 and the second eight three capacitor C283 are grounded respectively.

[0045] The inverting input terminal of the ninth power amplifier U9A is connected to the output terminal of the ninth power amplifier U9A and the first terminal of the fifth resistor R52 respectively; the second terminal of the fifth resistor R52 is connected to the first terminal of the ninth capacitor C98 and the third terminal of the first zero diode D10 respectively; the second terminal of the ninth capacitor C98 and the first terminal of the first zero diode D10 are grounded respectively.

[0046] The second terminal of the first eight inductor L18 is connected to the first terminal of the seventh three resistor R73, the first terminal of the seventh nine capacitor C79, the first terminal of the first zero six capacitor C106, the first and second terminals of the first five diode D15, and the first terminal of the sixth one resistor R61; the second terminal of the seventh three resistor R73, the second terminal of the seventh nine capacitor C79, the second terminal of the first zero six capacitor C106, and the third terminal of the first five diode D15 are respectively grounded;

[0047] The second end of the sixth resistor R61 is connected to the first end of the sixth resistor R65, the first end of the second capacitor C284, and the non-inverting input of the ninth power amplifier U9B, respectively; the second end of the sixth resistor R65 is connected to the first end of the sixth resistor R69, and the second end of the sixth resistor R69 and the second end of the second capacitor C284 are grounded.

[0048] The inverting input terminal of the ninth power amplifier U9B is connected to the output terminal of the ninth power amplifier U9B and the first terminal of the fifth resistor R53 respectively; the second terminal of the fifth resistor R53 is connected to the first terminal of the ninth capacitor C99 and the third terminal of the first diode D11 respectively; the second terminal of the ninth capacitor C99 and the first terminal of the first diode D11 are grounded respectively.

[0049] The input switching circuit includes a first three-chip U13, several first circuit units, and several second circuit units;

[0050] The first circuit unit includes a first zero-zero resistor R100, a first zero-one resistor R101, a first zero-nine resistor R109, and a first three-three capacitor C133; the first terminal of the first zero-zero resistor R100 is connected to the first terminal of the first zero-one resistor R101 and the first terminal of the first three-three capacitor C133; the second terminal of the first zero-one resistor R101 is connected to the first terminal of the first zero-nine resistor R109 and the first three-chip U13; the second terminal of the first three-three capacitor C133 and the second terminal of the first zero-nine resistor R109 are connected to the first three-chip U13.

[0051] The second circuit unit includes a first two-two resistor R122, a first one-three resistor R113, and a first one-one capacitor C111; the first ends of the first two-two resistor R122 and the first one-three resistor R113 are respectively connected to the first three-chip U13; the second end of the first one-three resistor R113 is connected to the first end of the first one-one capacitor C111, and the second end of the first one-one capacitor C111 is connected to the first three-chip U13.

[0052] According to another aspect of this utility model, the following technical solution is adopted: an oil-cooled screw air compressor control system, the oil-cooled screw air compressor control system including the above-mentioned oil-cooled screw air compressor and a cloud server; the cloud server is connected to each oil-cooled screw air compressor respectively.

[0053] The present invention proposes an Internet of Things-based battery-driven oil-cooled screw air compressor and its control system, which enables the compressor to consume less energy and be more efficient during operation; it can achieve intelligent management and make intelligent adjustments according to actual needs, further reducing energy consumption.

[0054] In one application scenario of this utility model, the oil-cooled screw air compressor has the following advantages:

[0055] High efficiency and energy saving: The combination of battery drive and oil-cooled permanent magnet motor technology makes the compressor consume less energy and more efficiently during operation.

[0056] Environmentally friendly and low-noise: As a power source, batteries have the advantages of zero emissions and low noise, which meet environmental protection requirements.

[0057] Intelligent control: The KAC7070 control system allows users to remotely monitor the operating status of multiple compressors at any time, centrally manage multiple compressors, and rationally adjust the operation of multiple compressors to achieve system energy saving.

[0058] Portable and flexible: Battery-powered oil-cooled screw air compressors are not limited by the power grid and can be used anytime and anywhere, improving the portability and flexibility of the equipment.

[0059] Low maintenance costs: Compared with traditional air or water cooling methods, oil cooling systems have lower maintenance costs and better cooling performance. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the composition of an oil-cooled screw air compressor in one embodiment of the present invention.

[0061] Figure 2 This is a schematic diagram of the main control unit of an oil-cooled screw air compressor in one embodiment of the present invention.

[0062] Figure 3 This is a circuit diagram of the main control circuit in one embodiment of the present invention.

[0063] Figure 4 This is a circuit diagram of the signal acquisition circuit in one embodiment of the present invention.

[0064] Figure 5 This is a circuit diagram of the power control circuit in one embodiment of the present invention.

[0065] Figure 6 This is a circuit diagram of the BOOT mode control circuit in one embodiment of the present invention.

[0066] Figure 7 This is a circuit diagram of the PT bridge sampling lower arm control circuit in one embodiment of the present invention.

[0067] Figure 8 This is a circuit diagram of the input temperature value measurement circuit in one embodiment of the present invention.

[0068] Figure 9 This is a circuit diagram of the input current measurement circuit in one embodiment of the present invention.

[0069] Figure 10 This is a circuit diagram of the input analog signal circuit in one embodiment of the present invention.

[0070] Figure 11 This is a circuit diagram of the input switching circuit in one embodiment of the present invention.

[0071] Figure 12 This is a circuit diagram of a crystal oscillator circuit in one embodiment of the present invention.

[0072] Figure 13 This is a circuit diagram of the reset circuit in one embodiment of the present invention.

[0073] Figure 14 This is a circuit diagram of the power pin decoupling capacitor circuit in one embodiment of the present invention.

[0074] Figure 15This is a circuit diagram of an analog filter capacitor circuit in one embodiment of the present invention. Detailed Implementation

[0075] The preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0076] To further understand this utility model, preferred embodiments of this utility model are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the scope of the claims of this utility model.

[0077] The description in this section pertains to only a few typical embodiments, and this utility model is not limited to the scope of the embodiments described. Substitution of identical or similar prior art methods with some technical features in the embodiments is also within the scope of this utility model's description and protection.

[0078] The steps described in the various embodiments in the specification are for illustrative purposes only, and the implementation of this application is not limited by the order of the steps.

[0079] The term "connection" in the instruction manual includes both direct and indirect connections.

[0080] This utility model discloses an oil-cooled screw air compressor. Figure 1 This is a schematic diagram of the composition of an oil-cooled screw air compressor according to one embodiment of the present invention; please refer to [link / reference]. Figure 1 The oil-cooled screw air compressor includes: compressor body 1, drive motor 6, battery pack 2, inverter (frequency converter), oil cooling system 3, Internet of Things module 4, and control module 5.

[0081] The drive motor 6 is connected to the compressor body 1, providing it with a power source; the battery pack 2 is connected to the inverter (frequency converter), which in turn connects to the compressor body 1, drive motor 6, oil cooling system 3, IoT module 4, and control module 5, providing them with the electrical energy required for operation. In one embodiment, the inverter converts the battery's DC voltage (DC300V or DC600V) into an AC voltage (AC200V or AC400V) suitable for the motor.

[0082] The oil cooling system 3 includes an oil storage container (such as an oil tank) and an oil cooler; compressed air transports the cooling oil in the oil tank to the compressor body 1 for cooling, and the oil cooler cools the oil. The Internet of Things module 4 is connected to the compressor body 1 to collect the operating data of the compressor body 1 in real time and transmit the data to the control module 5.

[0083] The control module 5 is used to analyze the energy consumption mode of the oil-cooled screw air compressor based on the collected data, and automatically adjust the working state of the oil-cooled screw air compressor according to the analysis results.

[0084] The oil-cooled screw air compressor further includes a mobile platform 7, and the compressor body 1, drive motor 6, battery pack 2, oil cooling system 3, Internet of Things module 4 and control module 5 are set based on the mobile platform 7.

[0085] The compressor body 1 can adopt a screw compressor structure, including a female rotor, a male rotor, bearings, and a housing. The female and male rotors mesh with each other within the housing, compressing air into high-pressure gas through rotation. Since the screw compressor structure can adopt existing technologies, it will not be elaborated here. The drive motor 6 can drive the female rotor (or male rotor) to rotate, thus driving the compressor body 1 to work. Since power is supplied through the battery pack 2, the drive motor 6 of the screw compressor can be a DC motor; alternatively, it can be powered by an inverter to generate AC power and use an AC motor.

[0086] The battery pack 2 can use high-performance lithium-ion batteries, which are connected to the compressor body via wires. The battery pack is equipped with an advanced battery management system (BMS) to monitor the battery pack's charge level, temperature, and other statuses in real time, ensuring safe operation. When the battery pack's charge is low, the BMS will issue an alarm signal to remind the user to charge or replace the battery pack in time. Of course, the battery pack 2 can also use other power supply structures; those skilled in the art can choose according to their needs, which will not be elaborated here.

[0087] The oil cooler can adopt a high-efficiency heat dissipation structure such as a finned radiator or a heat pipe radiator to improve cooling efficiency; the cooling oil circulates between the compressor body 1 and the oil cooler to achieve continuous cooling of the compressor.

[0088] The oil-cooled screw air compressor may further include an oil-gas separator 8 and an oil circuit system 9; the compressor body 1, the oil cooling system 3, and the oil-gas separator 8 are connected via the oil circuit system 9. Since the above connection method can be achieved using conventional methods in the art, it will not be elaborated upon here.

[0089] In one embodiment of this utility model, the IoT module 4 is used to acquire the operating status of the compressor; the control module automatically adjusts the compressed air speed and the cooling intensity of the oil cooler according to the operating status of the compressor to achieve precise control. The IoT module collects the compressor's operating data in real time, including temperature, pressure, and current; the IoT module transmits the data to the IoT platform wirelessly; users can remotely monitor the compressor's operating status through a mobile APP or web page, including viewing real-time data, historical data, alarm information, etc.

[0090] The control module 5 may further include an intelligent control mathematical model construction module; the intelligent control mathematical model construction module is used to construct an intelligent control mathematical model; the intelligent control mathematical model construction module selects sample data and performs data preprocessing; performs feature extraction and feature selection on the preprocessed data, constructs an intelligent control mathematical model, and optimizes the constructed mathematical model; wherein, the extracted features include set data that can characterize the compressor's operating status.

[0091] The control module 5 is connected to a working mode feature database, which assigns different features to the working modes of the compressor. When performing feature extraction, the intelligent control mathematical model construction module extracts the corresponding features from the working mode feature database for the working modes of the compressor.

[0092] This utility model further discloses an oil-cooled screw air compressor control system, which includes the aforementioned oil-cooled screw air compressor and a cloud server; the cloud server is connected to each oil-cooled screw air compressor.

[0093] In one embodiment of this utility model, the oil-cooled screw air compressor control system includes an intelligent control mathematical model construction module.

[0094] The intelligent control mathematical model construction module is used to construct an intelligent control mathematical model; the intelligent control mathematical model construction module selects sample data and performs data preprocessing; it extracts and selects features from the preprocessed data, constructs an intelligent control mathematical model, and optimizes the constructed mathematical model; wherein, the extracted features include set data that can characterize the compressor's operating status.

[0095] The oil-cooled screw air compressor control system has a working mode feature database, which assigns different features to the compressor's working modes. When extracting features, the intelligent control mathematical model construction module extracts the corresponding features from the working mode feature database for the compressor's working modes.

[0096] In one embodiment of this utility model, the oil-cooled screw air compressor control system includes a hardware layer, a software layer, a communication layer, and an energy-saving analysis and control layer.

[0097] Hardware layer: The core is the KAC7070 programmable controller (PLC), which collects various operating data through sensors and signal lines;

[0098] Software layer: PLC programming software is used to write control logic, touch screen programming software is used to design user interface, and IoT cloud platform is used for remote monitoring and data analysis;

[0099] Communication layer: Employs industrial Ethernet or wireless communication technology to achieve data transmission between the PLC and the touch screen and IoT cloud platform; Data acquisition: Utilizes the input / output modules of the KAC7070 PLC to acquire the compressor's operating status (such as pressure, temperature, and current); Through the PLC's built-in analog input / output modules, achieves digital conversion of analog signals to ensure data accuracy and real-time performance;

[0100] Energy-saving analysis and control layer: Energy-saving algorithms are integrated into the PLC to analyze the energy consumption patterns of the compressor system based on the collected data and identify potential energy-saving opportunities; based on the analysis results, the operating status of the compressor (such as start / stop, loading / unloading) is automatically adjusted to achieve energy-saving control; the touch screen interface provides a visual display of the energy-saving effect, making it easy for operators to monitor and adjust energy-saving strategies;

[0101] Remote monitoring and diagnostics: Through an IoT cloud platform, remote access to the control system is enabled to view real-time data, historical data, alarm information, etc. Remote fault diagnosis capabilities are provided, using data analysis to predict potential faults and take proactive measures to avoid downtime.

[0102] In one embodiment of this utility model, the control module includes a power control circuit, a main control circuit, a BOOT mode control circuit, a PT bridge sampling arm control circuit, an input temperature measurement circuit, an input current measurement circuit, an input analog quantity circuit, and an input switch quantity circuit. The main control circuit is connected to the power control circuit, the BOOT mode control circuit, the PT bridge sampling arm control circuit, the input temperature measurement circuit, the input current measurement circuit, the input analog quantity circuit, and the input switch quantity circuit, respectively.

[0103] Figure 5 This is a circuit diagram of the power control circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 5 In one embodiment of this utility model, the power control circuit includes a third and fourth chip U34, a third and second inductor L32, a third capacitor C3, a fourth capacitor C4, a second six-zero capacitor C260, a second six-one capacitor C261, a second six-four capacitor C264, a second six-five capacitor C265, a third two-one resistor R321, a third two-two resistor R322, and a third two-three resistor R323.

[0104] The fourth pin of the third-fourth chip U34 is connected to the 5V power supply voltage, the first terminal of the second 60-cell capacitor C260, and the first terminal of the third capacitor C3; the second terminals of the second 60-cell capacitor C260 and the third capacitor C3 are grounded. The fifth pin of the third-fourth chip U34 is connected to the second terminal of the third 22-cell resistor R322, the second terminal of the second 64-cell capacitor C264, and the first terminal of the third 21-cell resistor R321; the second terminal of the third 21-cell resistor R321 is connected to the second terminal of the third 23-cell resistor R323, and the first terminal of the third 23-cell resistor R323 is grounded. The third pin of the third-fourth chip U34 is connected to the first terminal of the third 2-cell inductor L32, and the second terminal of the third 2-cell inductor L32 is connected to the first terminal of the third 22-cell resistor R322, the first terminal of the second 64-cell capacitor C264, the first terminal of the second 61-cell capacitor C261, the first terminal of the second 65-cell capacitor C265, the first terminal of the fourth capacitor C4, and the 3.3V power supply voltage. The second terminal of the second 61 capacitor C261, the second terminal of the second 65 capacitor C265, and the second terminal of the fourth capacitor C4 are respectively grounded.

[0105] Figure 6 This is a circuit diagram of the BOOT mode control circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 6 In one embodiment of this utility model, the BOOT mode control circuit includes a second chip U2, a first capacitor C1, a second capacitor C2, a second 62 capacitor C262, a second 63 capacitor C263, a third 15 resistor R315, a third 16 resistor R316, a third 17 resistor R317, a third 18 resistor R318, a third 19 resistor R319, and a third 20 resistor R320.

[0106] The first terminal of resistor R317 is connected to a 3.3V power supply. The second terminal of resistor R317 is connected to the first terminal of resistor R318 and capacitor C262. The second terminals of resistor R318 and capacitor C262 are grounded. The first terminal of resistor R315 is connected to a 3.3V power supply. The second terminal of resistor R315 is connected to the first terminal of resistor R316 and capacitor C263. The second terminals of resistor R316 and capacitor C263 are grounded.

[0107] The first pin of the second chip U2 is connected to the first terminal of the third 19 resistor R319. The second terminal of the third 19 resistor R319 is connected to the 3.3V power supply voltage, the first terminal of the first capacitor C1, and the fifth pin of the second chip U2. The second terminal of the first capacitor C1 is grounded. The fourth pin of the second chip U2 is connected to the first terminal of the third 20 resistor R320. The second terminal of the third 20 resistor R320 is connected to the first terminal of the second capacitor C2. The second terminal of the second capacitor C2 is grounded.

[0108] Figure 7 This is a circuit diagram of the PT bridge sampling lower arm control circuit in one embodiment of the present invention; please refer to... Figure 7 In one embodiment of this utility model, the PT bridge sampling lower arm control circuit includes a ninth MOS transistor Q9, a second triple capacitor C23, a fourth resistor R4, a first quadruple resistor R14, a first quintuple resistor R15, a first sixth resistor R16, a first octave resistor R18, and a second quadruple resistor R24. The gate of the ninth MOS transistor Q9 is connected to the second terminal of the first quintuple resistor R16 and the first terminal of the first octave resistor R18; the second terminal of the first octave resistor R18 is grounded; the drain of the ninth MOS transistor Q9 is connected to the second terminal of the second quadruple resistor R24; the first terminal of the second quadruple resistor R24 ​​is connected to the second terminal of the fourth resistor R4, the first terminal of the first quintuple resistor R15, and the first terminal of the second triple capacitor C23; the second terminal of the first quintuple resistor R15 is connected to the first terminal of the first quadruple resistor R14; and the source of the ninth MOS transistor Q9, the second terminal of the first quadruple resistor R14, and the second terminal of the second triple capacitor C23 are grounded.

[0109] Figure 8 This is a circuit diagram of the input temperature value measurement circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 8 In one embodiment of this utility model, the input temperature measurement circuit includes a third diode D3, a third inductor L3, a fourth inductor L4, a first capacitor C11, a first second capacitor C12, and a fifth resistor R5. The second terminal of the third diode D3 is connected to the first terminal of the third inductor L3, and the second terminal of the third inductor L3 is connected to the second terminal of the fifth resistor R5, the first terminal of the first capacitor C11, and the first terminal of the first second capacitor C12, respectively. The first terminal of the third diode D3 is connected to the first terminal of the fourth inductor L4, and the second terminals of the fourth inductor L4, the first capacitor C11, and the first second capacitor C12 are grounded.

[0110] Figure 9 This is a circuit diagram of the input current measurement circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 9In one embodiment of this utility model, the input current measurement circuit includes a sixth A power amplifier U6A, a sixth B power amplifier U6B, a seventh A power amplifier U7A, a seventh B power amplifier U7B, a first zero MOSFET Q10, a ninth diode D9, a fourth zero capacitor C40, a fourth first capacitor C41, a fourth second capacitor C42, a second octet capacitor C282, a first seven resistor R17, a second three resistor R23, a second five resistor R25, a second six resistor R26, a second seven resistor R27, a second eight resistor R28, a second nine resistor R29, a third zero resistor R30, a third first resistor R31, a third second resistor R32, a third third resistor R33, a third fourth resistor R34, a third fifth resistor R35, a third sixth resistor R36, and a third seventh resistor R37.

[0111] The non-inverting input terminal of the sixth power amplifier U6A is connected to the second terminal of the third resistor R33, and the inverting input terminal of the sixth power amplifier U6A is connected to the first terminal of the fourth capacitor C41, the first terminal of the second resistor R25, the first terminal of the second resistor R26, and the first terminal of the second resistor R29, respectively. The second terminals of the fourth capacitor C41 and the second terminals of the second resistor R25 are grounded, respectively. The output terminal of the sixth power amplifier U6A is connected to the second terminal of the second resistor R26 and the first terminal of the second resistor R27, respectively.

[0112] The non-inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the third fourth resistor R34. The inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the second seventh resistor R27, the first terminal of the second eighth resistor R28, the second terminal of the third zero resistor R30, and the first terminal of the fourth second capacitor C42. The first terminal of the third zero resistor R30 is connected to the second terminal of the second ninth resistor R29. The output terminal of the sixth power amplifier U6B is connected to the second terminal of the second eighth resistor R28, the second terminal of the fourth second capacitor C42, and the first terminal of the third second resistor R32.

[0113] The non-inverting input terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R32; the inverting input terminal of the seventh power amplifier U7A is connected to the first terminal of the third resistor R31, the first terminal of the second capacitor C282, the first terminal of the third resistor R36, and the first terminal of the third resistor R35; the output terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R31, the second terminal of the second capacitor C282, and the non-inverting input terminal of the seventh power amplifier U7B.

[0114] The gate of the first zero-MOSFET Q10 is connected to the second terminal of the first seven-resistance R17 and the first terminal of the second three-resistance R23, respectively; the drain of the first zero-MOSFET Q10 is connected to the second terminal of the third six-resistance R36, and the source of the first zero-MOSFET Q10, the second terminal of the second three-resistance R23, and the second terminal of the third five-resistance R35 are respectively grounded.

[0115] The inverting input terminal of the seventh power amplifier U7B is connected to the output terminal of the seventh power amplifier U7B and the first terminal of the third seven resistor R37 respectively; the second terminal of the third seven resistor R37 is connected to the first terminal of the fourth zero capacitor C40 and the third terminal of the ninth diode D9 respectively; the second terminal of the fourth zero capacitor C40 and the first terminal of the ninth diode D9 are grounded respectively.

[0116] Figure 10 This is a circuit diagram of the input analog signal circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 10 In one embodiment of this utility model, the input analog circuit includes a ninth power amplifier U9A, a ninth power amplifier U9B, a first zero diode D10, a first one diode D11, a first four diode D14, a first five diode D15, a first seven inductor L17, a first eight inductor L18, a seventh three capacitor C73, a seventh nine capacitor C79, a ninth eight capacitor C98, a ninth nine capacitor C99, a first zero five capacitor C105, a first zero six capacitor C106, a second eight three capacitor C283, a second eight four capacitor C284, a fifth two resistor R52, a fifth three resistor R53, a sixth zero resistor R60, a sixth one resistor R61, a sixth four resistor R64, a sixth five resistor R65, a sixth eight resistor R68, a sixth nine resistor R69, a seventh two resistor R72, and a seventh three resistor R73.

[0117] The second terminal of the first inductor L17 is connected to the first terminal of the seventh resistor R72, the first terminal of the seventh capacitor C73, the first terminal of the first zero capacitor C105, the first and second terminals of the first fourth diode D14, and the first terminal of the sixth zero resistor R60; the second terminal of the seventh resistor R72, the second terminal of the seventh capacitor C73, the second terminal of the first zero capacitor C105, and the third terminal of the first fourth diode D14 are respectively grounded.

[0118] The second end of the sixth zero resistor R60 is connected to the first end of the sixth fourth resistor R64, the first end of the second eight three capacitor C283, and the non-inverting input terminal of the ninth A power amplifier U9A, respectively; the second end of the sixth fourth resistor R64 is connected to the first end of the sixth eight resistor R68, and the second end of the sixth eight resistor R68 and the second eight three capacitor C283 are respectively grounded.

[0119] The inverting input terminal of the ninth power amplifier U9A is connected to the output terminal of the ninth power amplifier U9A and the first terminal of the fifth resistor R52 respectively; the second terminal of the fifth resistor R52 is connected to the first terminal of the ninth capacitor C98 and the third terminal of the first zero diode D10 respectively; the second terminal of the ninth capacitor C98 and the first terminal of the first zero diode D10 are grounded respectively.

[0120] The second terminal of the first eight inductor L18 is connected to the first terminal of the seventh three resistor R73, the first terminal of the seventh nine capacitor C79, the first terminal of the first zero six capacitor C106, the first and second terminals of the first five diode D15, and the first terminal of the sixth one resistor R61; the second terminal of the seventh three resistor R73, the second terminal of the seventh nine capacitor C79, the second terminal of the first zero six capacitor C106, and the third terminal of the first five diode D15 are respectively grounded.

[0121] The second end of the sixth resistor R61 is connected to the first end of the sixth resistor R65, the first end of the second capacitor C284, and the non-inverting input of the ninth power amplifier U9B, respectively; the second end of the sixth resistor R65 is connected to the first end of the sixth resistor R69, and the second end of the sixth resistor R69 and the second end of the second capacitor C284 are grounded, respectively.

[0122] The inverting input terminal of the ninth power amplifier U9B is connected to the output terminal of the ninth power amplifier U9B and the first terminal of the fifth resistor R53 respectively; the second terminal of the fifth resistor R53 is connected to the first terminal of the ninth capacitor C99 and the third terminal of the first diode D11 respectively; the second terminal of the ninth capacitor C99 and the first terminal of the first diode D11 are grounded respectively.

[0123] Figure 11 This is a circuit diagram of the input switching circuit in one embodiment of the present invention; please refer to [link / reference]. Figure 11 In one embodiment of this utility model, the input switching circuit includes a first three-chip U13, a plurality of first circuit units, and a plurality of second circuit units.

[0124] The first circuit unit includes a first zero-zero resistor R100, a first zero-one resistor R101, a first zero-nine resistor R109, and a first three-three capacitor C133; the first end of the first zero-zero resistor R100 is connected to the first end of the first zero-one resistor R101 and the first end of the first three-three capacitor C133; the second end of the first zero-one resistor R101 is connected to the first end of the first zero-nine resistor R109 and the first three-chip U13; the second end of the first three-three capacitor C133 and the second end of the first zero-nine resistor R109 are connected to the first three-chip U13.

[0125] The second circuit unit includes a first two-two resistor R122, a first one-three resistor R113, and a first one-one capacitor C111; the first ends of the first two-two resistor R122 and the first one-three resistor R113 are respectively connected to the first three-chip U13; the second end of the first one-three resistor R113 is connected to the first end of the first one-one capacitor C111, and the second end of the first one-one capacitor C111 is connected to the first three-chip U13.

[0126] Figure 3 , Figure 4 , Figure 12 , Figure 13 , Figure 14 and Figure 15 The diagrams show the main control circuit, signal acquisition circuit, crystal oscillator circuit, reset circuit, power pin decoupling capacitor circuit, and analog filter capacitor circuit in one embodiment of this utility model. In one embodiment of this utility model, the above circuit structure can be used; of course, those skilled in the art can also choose other circuits as needed.

[0127] This utility model further discloses a control method for the above-mentioned oil-cooled screw air compressor, the control method comprising:

[0128] Intelligent control steps: The intelligent control module analyzes the energy consumption mode of the oil-cooled screw air compressor based on the collected data, and automatically adjusts the working status of the oil-cooled screw air compressor according to the analysis results.

[0129] The control method may further include:

[0130] The steps for constructing an intelligent control mathematical model are as follows: The intelligent control mathematical model construction module constructs an intelligent control mathematical model; the intelligent control mathematical model construction module selects sample data and performs data preprocessing; the preprocessed data is subjected to feature extraction and feature selection to construct an intelligent control mathematical model, and the constructed mathematical model is optimized; wherein, the extracted features include the collected set data that can characterize the compressor's operating status;

[0131] The oil-cooled screw air compressor control system has a working mode feature database, which assigns different features to the compressor's working modes. When extracting features, the intelligent control mathematical model construction module extracts the corresponding features from the working mode feature database for the compressor's working modes.

[0132] In one application scenario of this utility model, the control system of the oil-cooled screw air compressor further includes the following control algorithm:

[0133] Constant pressure mechanism: The constant pressure mechanism ensures that the gas supply pressure is continuously stable and the flow rate meets the continuous needs. The system automatically identifies and controls the addition and reduction of air compressors. While ensuring the stability of the gas supply system pressure, the system automatically adjusts the time interval between adding and removing air compressors according to the actual operating conditions.

[0134] Sequential control: The air compressor operating sequence is initially set according to gas demand. The control cabinet then switches the operating sequence according to the pre-determined sequence switching conditions, without operator intervention. If sequential start / stop is not enabled, the system sorts each unit according to its cumulative operating time, with units with shorter cumulative operating times starting first and those with longer cumulative operating times shutting down first. This ensures that the operating time of each unit is approximately equal, achieving reasonable unit matching with user load, realizing energy-saving and efficient operation, and balancing the operating time of each unit to extend its service life.

[0135] Polling function: After the continuous running time of the running equipment reaches the set polling time, the system will start to determine whether there is a device with the same power among the devices connected to the system and shut down. If there is, it will start to rotate the operation. If not, the device will continue to run until the joint control shutdown or the system stops.

[0136] Fault switching: When equipment fails, the system can automatically switch equipment in sequence to put it into operation in a timely manner without affecting the gas supply. The faulty equipment will also be automatically removed from the control system and will only support data acquisition and remote start and stop control of a single device. The equipment needs to be manually added back into the system after the fault is handled and reset to prevent the issuance of operation commands to the equipment during the maintenance process.

[0137] Planned Start-Stop: Start-stop plans can be customized according to actual needs. The number, sequence, and time period of devices to be started or stopped can be set. When this function is enabled, the system will run according to the plan. This start-stop command is for controlling the start and stop of the interconnection system and does not involve the devices. This function can be enabled or disabled.

[0138] In summary, the battery-driven oil-cooled screw air compressor based on the Internet of Things and its control system and method proposed in this utility model can reduce energy consumption and increase efficiency during compressor operation; it can achieve intelligent management and make intelligent adjustments according to actual needs, further reducing energy consumption.

[0139] In one application scenario of this utility model, the oil-cooled screw air compressor has the following advantages:

[0140] High efficiency and energy saving: The combination of battery drive and oil-cooled permanent magnet motor technology makes the compressor consume less energy and more efficiently during operation.

[0141] Environmentally friendly and low-noise: As a power source, batteries have the advantages of zero emissions and low noise, which meet environmental protection requirements.

[0142] Intelligent control: The KAC7070 control system allows users to remotely monitor the operating status of multiple compressors at any time, centrally manage multiple compressors, and rationally adjust the operation of multiple compressors to achieve system energy saving.

[0143] Portable and flexible: Battery-powered oil-cooled screw air compressors are not limited by the power grid and can be used anytime and anywhere, improving the portability and flexibility of the equipment.

[0144] Low maintenance costs: Compared with traditional air or water cooling methods, oil cooling systems have lower maintenance costs and better cooling performance.

[0145] It should be noted that this application can be implemented in software and / or a combination of software and hardware; for example, it can be implemented using an application-specific integrated circuit (ASIC), a general-purpose computer, or any other similar hardware device. In some embodiments, the software program of this application can be executed by a processor to implement the steps or functions described above. Similarly, the software program of this application (including related data structures) can be stored in a computer-readable recording medium; for example, RAM memory, magnetic or optical drives, floppy disks, and similar devices. In addition, some steps or functions of this application can be implemented in hardware; for example, as circuitry that cooperates with a processor to perform the various steps or functions.

[0146] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The description and application of this utility model herein are illustrative and not intended to limit the scope of the utility model to the above embodiments. The effects or advantages involved in the embodiments may not be manifested in the embodiments due to various factors, and the description of effects or advantages is not intended to limit the embodiments. Variations and modifications of the embodiments disclosed herein are possible, and various substitutions and equivalents of the components in the embodiments are well known to those skilled in the art. It should be clear to those skilled in the art that this utility model can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and parts without departing from the spirit or essential characteristics of this utility model. Other variations and modifications can be made to the embodiments disclosed herein without departing from the scope and spirit of this utility model.

Claims

1. A battery-driven oil-cooled screw air compressor based on the Internet of Things, characterized in that, The oil-cooled screw air compressor includes: a compressor body, a drive motor, a battery pack, an inverter, an oil cooling system, an Internet of Things module, and a control module; The drive motor is connected to the compressor body and provides it with a power source; the battery pack is connected to the inverter, which is connected to the compressor body, drive motor, oil cooling system, IoT module and control module respectively, and provides the power required for the operation of the compressor body, drive motor, oil cooling system, IoT module and control module; The oil cooling system includes an oil storage container and an oil cooler; compressed air delivers the cooling oil in the oil storage container to the compressor body for cooling, while the oil cooler cools the oil to a lower temperature. The IoT module is connected to the compressor body to collect the compressor's set data in real time and transmit the data to the control module; the control module is connected to the compressor body, drive motor, oil cooling system and IoT module respectively.

2. The battery-driven oil-cooled screw air compressor based on the Internet of Things as described in claim 1, characterized in that: The oil-cooled screw air compressor further includes a mobile platform, and the compressor body, drive motor, battery pack, oil cooling system, Internet of Things module and control module are set based on the mobile platform.

3. The battery-driven oil-cooled screw air compressor based on the Internet of Things as described in claim 1, characterized in that: The compressor body adopts a screw compressor structure, including a female rotor, a male rotor, bearings, and a housing; the female rotor and the male rotor mesh with each other inside the housing, and compress air into high-pressure gas by rotating. The battery pack uses high-performance lithium-ion batteries and is connected to the compressor body via wires. The battery pack is equipped with an advanced battery management system (BMS) that monitors the battery pack's charge and temperature status in real time to ensure safe operation. When the battery pack's charge is low, the BMS will issue an alarm signal to remind the user to charge or replace the battery pack in time. The oil cooler adopts a finned radiator or heat pipe radiator with a high-efficiency heat dissipation structure to improve cooling efficiency; the cooling oil circulates between the compressor body and the oil cooler to achieve continuous cooling of the compressor. The IoT module is used to acquire the operating status of the compressor; the control module automatically adjusts the speed of the compressed air and the cooling intensity of the oil cooler according to the operating status of the compressor to achieve precise control; The IoT module collects real-time operating data of the compressor, including temperature, pressure, and current; the IoT module transmits the data to the IoT platform wirelessly; users can remotely monitor the compressor's operating status through a mobile app or web page, including viewing real-time data, historical data, and alarm information.

4. The battery-driven oil-cooled screw air compressor based on the Internet of Things as described in claim 1, characterized in that: The control module includes a power control circuit, a main control circuit, a BOOT mode control circuit, a PT bridge sampling arm control circuit, an input temperature measurement circuit, an input current measurement circuit, an input analog quantity circuit, and an input digital quantity circuit. The main control circuit is connected to the power control circuit, the BOOT mode control circuit, the PT bridge sampling arm control circuit, the input temperature measurement circuit, the input current measurement circuit, the input analog quantity circuit, and the input digital quantity circuit.

5. The battery-driven oil-cooled screw air compressor based on the Internet of Things according to claim 4, characterized in that: The power control circuit includes a third and fourth chip U34, a third and second inductor L32, a third capacitor C3, a fourth capacitor C4, a second and sixth zero capacitor C260, a second and sixth one capacitor C261, a second and sixth four capacitor C264, a second and sixth five capacitor C265, a third and second one resistor R321, a third and second two resistor R322, and a third and second three resistor R323. The fourth pin of the third and fourth chip U34 is connected to the 5V power supply voltage, the first terminal of the second 60-cell capacitor C260, and the first terminal of the third capacitor C3; the second terminal of the second 60-cell capacitor C260 and the second terminal of the third capacitor C3 are respectively grounded. The fifth pin of the third and fourth chip U34 is connected to the second end of the third two-two resistor R322, the second end of the second six-four capacitor C264, and the first end of the third two-one resistor R321; the second end of the third two-one resistor R321 is connected to the second end of the third two-three resistor R323, and the first end of the third two-three resistor R323 is grounded. The third pin of the third fourth chip U34 is connected to the first end of the third second inductor L32. The second end of the third second inductor L32 is connected to the first end of the third second resistor R322, the first end of the second six-four capacitor C264, the first end of the second six-one capacitor C261, the first end of the second six-five capacitor C265, the first end of the fourth capacitor C4, and the 3.3V power supply voltage. The second terminal of the second 61 capacitor C261, the second terminal of the second 65 capacitor C265, and the second terminal of the fourth capacitor C4 are respectively grounded; The BOOT mode control circuit includes a second chip U2, a first capacitor C1, a second capacitor C2, a second 62 capacitor C262, a second 63 capacitor C263, a third 15 resistor R315, a third 16 resistor R316, a third 17 resistor R317, a third 18 resistor R318, a third 19 resistor R319, and a third 20 resistor R320. The first terminal of the third 17 resistor R317 is connected to a 3.3V power supply voltage, and the second terminal of the third 17 resistor R317 is connected to the first terminal of the third 18 resistor R318 and the first terminal of the second 62 capacitor C262 respectively; the second terminal of the third 18 resistor R318 and the second terminal of the second 62 capacitor C262 are respectively grounded. The first terminal of the third 15 resistor R315 is connected to a 3.3V power supply voltage, and the second terminal of the third 15 resistor R315 is connected to the first terminal of the third 16 resistor R316 and the first terminal of the second 63 capacitor C263 respectively; the second terminal of the third 16 resistor R316 and the second terminal of the second 63 capacitor C263 are respectively grounded. The first pin of the second chip U2 is connected to the first end of the third 19 resistor R319. The second end of the third 19 resistor R319 is connected to the 3.3V power supply voltage, the first end of the first capacitor C1, and the fifth pin of the second chip U2. The second end of the first capacitor C1 is grounded. The fourth pin of the second chip U2 is connected to the first end of the third zero-resistance R320, the second end of the third zero-resistance R320 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is grounded.

6. The battery-driven oil-cooled screw air compressor based on the Internet of Things according to claim 4, characterized in that: The PT bridge sampling lower arm control circuit includes a ninth MOSFET Q9, a second third capacitor C23, a fourth resistor R4, a first fourth resistor R14, a first fifth resistor R15, a first sixth resistor R16, a first eighth resistor R18, and a second fourth resistor R24. The gate of the ninth MOS transistor Q9 is connected to the second terminal of the first six-resistor R16 and the first terminal of the first eight-resistor R18; the second terminal of the first eight-resistor R18 is grounded; the drain of the ninth MOS transistor Q9 is connected to the second terminal of the second four-resistor R24; the first terminal of the second four-resistor R24 ​​is connected to the second terminal of the fourth resistor R4, the first terminal of the first five-resistor R15, and the first terminal of the second three-capacitor C23; the second terminal of the first five-resistor R15 is connected to the first terminal of the first four-resistor R14; the source of the ninth MOS transistor Q9, the second terminal of the first four-resistor R14, and the second terminal of the second three-capacitor C23 are grounded. The input temperature measurement circuit includes a third diode D3, a third inductor L3, a fourth inductor L4, a first capacitor C11, a first second capacitor C12, and a fifth resistor R5. The second terminal of the third diode D3 is connected to the first terminal of the third inductor L3, and the second terminal of the third inductor L3 is connected to the second terminal of the fifth resistor R5, the first terminal of the first capacitor C11, and the first terminal of the first second capacitor C12. The first terminal of the third diode D3 is connected to the first terminal of the fourth inductor L4, and the second terminals of the fourth inductor L4, the first capacitor C11, and the first second capacitor C12 are grounded.

7. The battery-driven oil-cooled screw air compressor based on the Internet of Things according to claim 4, characterized in that: The input current measurement circuit includes a sixth A power amplifier U6A, a sixth B power amplifier U6B, a seventh A power amplifier U7A, a seventh B power amplifier U7B, a first zero MOSFET Q10, a ninth diode D9, a fourth zero capacitor C40, a fourth first capacitor C41, a fourth second capacitor C42, a second octet capacitor C282, a first seven resistor R17, a second three resistor R23, a second five resistor R25, a second six resistor R26, a second seven resistor R27, a second eight resistor R28, a second nine resistor R29, a third zero resistor R30, a third first resistor R31, a third second resistor R32, a third third resistor R33, a third fourth resistor R34, a third fifth resistor R35, a third sixth resistor R36, and a third seventh resistor R37. The non-inverting input terminal of the sixth power amplifier U6A is connected to the second terminal of the third resistor R33, and the inverting input terminal of the sixth power amplifier U6A is connected to the first terminal of the fourth capacitor C41, the first terminal of the second fifth resistor R25, the first terminal of the second sixth resistor R26, and the first terminal of the second ninth resistor R29, respectively; the second terminals of the fourth capacitor C41 and the second fifth resistor R25 are grounded; the output terminal of the sixth power amplifier U6A is connected to the second terminal of the second sixth resistor R26 and the first terminal of the second seventh resistor R27, respectively. The non-inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the third fourth resistor R34; the inverting input terminal of the sixth power amplifier U6B is connected to the second terminal of the second seventh resistor R27, the first terminal of the second eighth resistor R28, the second terminal of the third zero resistor R30, and the first terminal of the fourth two capacitor C42; the first terminal of the third zero resistor R30 is connected to the second terminal of the second ninth resistor R29; the output terminal of the sixth power amplifier U6B is connected to the second terminal of the second eighth resistor R28, the second terminal of the fourth two capacitor C42, and the first terminal of the third two resistor R32. The non-inverting input terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R32; the inverting input terminal of the seventh power amplifier U7A is connected to the first terminal of the third resistor R31, the first terminal of the second capacitor C282, the first terminal of the third resistor R36, and the first terminal of the third resistor R35; the output terminal of the seventh power amplifier U7A is connected to the second terminal of the third resistor R31, the second terminal of the second capacitor C282, and the non-inverting input terminal of the seventh power amplifier U7B. The gate of the first zero-voltage MOSFET Q10 is connected to the second terminal of the first seven-resistance R17 and the first terminal of the second three-resistance R23, respectively; the drain of the first zero-voltage MOSFET Q10 is connected to the second terminal of the third six-resistance R36, and the source of the first zero-voltage MOSFET Q10, the second terminal of the second three-resistance R23, and the second terminal of the third five-resistance R35 are respectively grounded. The inverting input terminal of the seventh power amplifier U7B is connected to the output terminal of the seventh power amplifier U7B and the first terminal of the third seven resistor R37 respectively; the second terminal of the third seven resistor R37 is connected to the first terminal of the fourth zero capacitor C40 and the third terminal of the ninth diode D9 respectively; the second terminal of the fourth zero capacitor C40 and the first terminal of the ninth diode D9 are grounded respectively.

8. The battery-driven oil-cooled screw air compressor based on the Internet of Things according to claim 4, characterized in that: The input analog circuit includes a ninth power amplifier U9A, a ninth power amplifier U9B, a first zero diode D10, a first one diode D11, a first four diode D14, a first five diode D15, a first seven inductor L17, a first eight inductor L18, a seventh three capacitor C73, a seventh nine capacitor C79, a ninth eight capacitor C98, a ninth nine capacitor C99, a first zero five capacitor C105, a first zero six capacitor C106, a second eight three capacitor C283, a second eight four capacitor C284, a fifth two resistor R52, a fifth three resistor R53, a sixth zero resistor R60, a sixth one resistor R61, a sixth four resistor R64, a sixth five resistor R65, a sixth eight resistor R68, a sixth nine resistor R69, a seventh two resistor R72, and a seventh three resistor R73. The second terminal of the first seven inductor L17 is connected to the first terminal of the seventh two resistor R72, the first terminal of the seventh three capacitor C73, the first terminal of the first zero five capacitor C105, the first and second terminals of the first four diode D14, and the first terminal of the sixth zero resistor R60; the second terminal of the seventh two resistor R72, the second terminal of the seventh three capacitor C73, the second terminal of the first zero five capacitor C105, and the third terminal of the first four diode D14 are respectively grounded; The second end of the sixth zero resistor R60 is connected to the first end of the sixth fourth resistor R64, the first end of the second eight three capacitor C283, and the non-inverting input terminal of the ninth A power amplifier U9A; the second end of the sixth fourth resistor R64 is connected to the first end of the sixth eight resistor R68, and the second end of the sixth eight resistor R68 and the second eight three capacitor C283 are grounded respectively. The inverting input terminal of the ninth power amplifier U9A is connected to the output terminal of the ninth power amplifier U9A and the first terminal of the fifth resistor R52 respectively; the second terminal of the fifth resistor R52 is connected to the first terminal of the ninth capacitor C98 and the third terminal of the first zero diode D10 respectively; the second terminal of the ninth capacitor C98 and the first terminal of the first zero diode D10 are grounded respectively. The second terminal of the first eight inductor L18 is connected to the first terminal of the seventh three resistor R73, the first terminal of the seventh nine capacitor C79, the first terminal of the first zero six capacitor C106, the first and second terminals of the first five diode D15, and the first terminal of the sixth one resistor R61; the second terminal of the seventh three resistor R73, the second terminal of the seventh nine capacitor C79, the second terminal of the first zero six capacitor C106, and the third terminal of the first five diode D15 are respectively grounded; The second end of the sixth resistor R61 is connected to the first end of the sixth resistor R65, the first end of the second capacitor C284, and the non-inverting input of the ninth power amplifier U9B, respectively; the second end of the sixth resistor R65 is connected to the first end of the sixth resistor R69, and the second end of the sixth resistor R69 and the second end of the second capacitor C284 are grounded. The inverting input terminal of the ninth power amplifier U9B is connected to the output terminal of the ninth power amplifier U9B and the first terminal of the fifth resistor R53 respectively; the second terminal of the fifth resistor R53 is connected to the first terminal of the ninth capacitor C99 and the third terminal of the first diode D11 respectively; the second terminal of the ninth capacitor C99 and the first terminal of the first diode D11 are grounded respectively.

9. The battery-driven oil-cooled screw air compressor based on the Internet of Things according to claim 4, characterized in that: The input switching circuit includes a first three-chip U13, several first circuit units, and several second circuit units; the first circuit unit includes a first zero-zero resistor R100, a first zero-one resistor R101, a first zero-nine resistor R109, and a first three-three capacitor C133; the first terminal of the first zero-zero resistor R100 is connected to the first terminal of the first zero-one resistor R101 and the first terminal of the first three-three capacitor C133; the second terminal of the first zero-one resistor R101 is connected to the first terminal of the first zero-nine resistor R109 and the first three-chip U13. The second terminal of the first three-three capacitor C133 and the second terminal of the first zero-nine resistor R109 are respectively connected to the first three-chip U13; the second circuit unit includes a first two-two resistor R122, a first one-three resistor R113, and a first one-one capacitor C111; the first terminal of the first two-two resistor R122 and the first terminal of the first one-three resistor R113 are respectively connected to the first three-chip U13; the second terminal of the first one-three resistor R113 is connected to the first terminal of the first one-one capacitor C111, and the second terminal of the first one-one capacitor C111 is connected to the first three-chip U13.

10. A battery-driven oil-cooled screw air compressor control system based on the Internet of Things, characterized in that: The oil-cooled screw air compressor control system includes an oil-cooled screw air compressor as described in any one of claims 1 to 9 and a cloud server; the cloud server is connected to each oil-cooled screw air compressor.

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