Communication board

Abstract

The utility model relates to a communication board, which comprises a power supply module, a 4G communication module, a board main control chip, an RFID communication module and a communication interface, and is characterized in that the 4G communication module, the board main control chip and the RFID communication module are connected with the power supply module, and the 4G communication module is used for realizing 4G network transmission; the board main control chip is connected with the 4G communication module, and the board main control chip has Bluetooth communication and WiFi communication functions; the RFID communication module is used for reading and transmitting RFID data, and the RFID data comprises an RFID card number; the communication interface is used for being connected with a charging pile main control chip so as to achieve data transmission between the communication board and the charging pile main control chip. According to the communication board, various communication functions such as 4G, WIFI, Bluetooth and RFID card swiping are achieved through the highly integrated design, the 4G antenna and the RFID coil are integrated on the board, an external antenna is not needed, and installation and wiring are simplified; besides, through a 5V power supply and two serial ports, full-function communication can be realized only through six leads, and the reliability of the system and the convenience of users are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of communication technology, in particular to a communication board. BACKGROUND

[0002] With the popularity of electric vehicles, the demand for charging piles is rapidly growing. Charging piles not only need to provide stable power output, but also need to have efficient and reliable human-computer interaction functions. Common human-computer interaction methods of charging piles include 4G, WiFi, Bluetooth, RFID card swiping and other communication methods. These communication methods play an important role in different application scenarios.

[0003] In related technologies, in order to better realize human-computer interaction, 4G, WiFi, Bluetooth, and RFID card swiping technologies are usually combined for use. However, when these communication methods are usually integrated in the form of two-in-one or three-in-one in the charging pile, since each communication function module is usually independently designed, it is often divided into several communication boards, and the communication board also needs to pull out an antenna for use, resulting in complex wiring in the charging pile, low integration, and inconvenience for maintenance. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a communication board in view of the low integration and inconvenience for maintenance of the communication board in the related technologies.

[0005] The present application provides a communication board, comprising:

[0006] a power module, connected with the power module:

[0007] a 4G communication module for realizing 4G network transmission;

[0008] a board main control chip connected with the 4G communication module, the board main control chip having Bluetooth communication and WiFi communication functions;

[0009] an RFID communication module for reading and transmitting RFID data, the RFID data including an RFID card number;

[0010] a communication interface for connecting with a charging pile main control chip to realize data transmission between the communication board and the charging pile main control chip.

[0011] In one of the embodiments, the 4G communication module comprises:

[0012] a 4G communication chip connected with the power module, and connected with the 4G communication chip:

[0013] an on-board 4G antenna for receiving and transmitting wireless signals of the 4G network to enable the communication board to perform data transmission and communication with a mobile network;

[0014] An on-board SIM card is used to store the identity information and network access credentials of a user, so that the 4G communication module can be connected to a mobile network to realize data transmission.

[0015] In one of the embodiments, the 4G communication module further comprises an RC impedance matching sub-module connected between the 4G communication chip and the on-board 4G antenna, which is used to match the impedance of the on-board 4G antenna.

[0016] In one of the embodiments, the 4G communication module further comprises a networking indication module, which is used to display the networking status of the 4G communication module.

[0017] In one of the embodiments, the communication board further comprises a serial communication level conversion module connected between the 4G communication module and the board master control chip, which is used to perform level conversion of serial data.

[0018] In one of the embodiments, the communication board further comprises a power-on / off control module connected between the 4G communication module and the board master control chip, which is used to realize the on / off control of the 4G communication module by the board master control chip.

[0019] In one of the embodiments, the RFID communication module comprises:

[0020] An RFID chip connected with the power module, which is used to obtain the data of the RFID card;

[0021] An RFID data processing module connected with the RFID chip, which is used to obtain and process the data of the RFID card to obtain RFID data.

[0022] In one of the embodiments, the RFID communication module further comprises an on-board RFID coil connected with the RFID chip, which is used to activate the RFID card, read the data of the RFID card, and transmit the data of the RFID card to the RFID chip.

[0023] In one of the embodiments, the RFID communication module further comprises an LC resonance network connected between the on-board RFID coil and the RFID chip, which cooperates with the RFID chip to realize the reading and identification of the RFID card.

[0024] In one of the embodiments, the communication board further comprises a TF card connected with the board master control chip, which is used to store the configuration information and / or log data of the communication board.

[0025] The communication board comprises a power module, a 4G communication module, a board main control chip, an RFID communication module and a communication interface, the 4G communication module, the board main control chip and the RFID communication module are connected with the power module, the 4G communication module is used for realizing 4G network transmission; the board main control chip is connected with the 4G communication module, the board main control chip has Bluetooth communication and WiFi communication functions; the RFID communication module is used for reading and transmitting RFID data, the RFID data comprises an RFID card number; the communication interface is used for connecting with a charging pile main control chip, so as to realize data transmission between the communication board and the charging pile main control chip. In the application, the power module, the 4G communication module, the board main control chip, the RFID communication module and the communication interface are integrated on the communication board, and the WiFi and Bluetooth communication functions can be realized through the board main control chip, and after being combined with the 4G communication module and the RFID communication module, the 4G, WiFi, Bluetooth and RFID man-machine interaction modes can be realized, so that the integration degree of the communication board is high; and the user can select according to the use requirement, and easily cope with the operation scene, the weak signal scene of the underground garage, the outdoor household scene and the like, so that the adaptability is high. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 The structure schematic diagram of the communication board in some embodiments of the present application;

[0028] Figure 2 The circuit structure schematic diagram of the RC impedance matching sub-module in some embodiments of the present application;

[0029] Figure 3 The circuit structure schematic diagram of the serial communication level conversion module in some embodiments of the present application;

[0030] Figure 4 The circuit structure schematic diagram of the power-on / off control module in some embodiments of the present application;

[0031] Figure 5 The circuit structure schematic diagram of the LC resonance network in some embodiments of the present application.

[0032] Explanation of reference numerals:

[0033] 100, power module; 200, 4G communication module; 210, 4G communication chip; 220, on-board 4G antenna; 230, on-board SIM card; 240, RC impedance matching sub-module; 250, networking indication module; 300, board main control chip; 400, RFID communication module; 410, RFID chip; 420, RFID data processing module; 430, on-board RFID coil; 440, LC resonance network; 500, communication interface; 600, serial communication level conversion module; 700, power-on / off control module; 800, TF card. DETAILED DESCRIPTION

[0034] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0036] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0037] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0038] In this application, unless otherwise clearly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or a middle element can exist at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0040] With the popularity of electric vehicles, the demand for charging piles is rapidly growing. Charging piles not only need to provide stable power output, but also need to have efficient and reliable human-computer interaction functions. Common human-computer interaction methods of charging piles include 4G, WiFi, Bluetooth, RFID card swiping and other communication methods. These communication methods play an important role in different application scenarios.

[0041] In related technologies, in order to better realize human-computer interaction, 4G, WiFi, Bluetooth, RFID card swiping technology is usually combined for use. However, when these communication methods are usually integrated in the form of two-in-one or three-in-one in the charging pile, since each communication function module is usually independently designed, it is often divided into several communication boards, and the communication board also needs to pull out an antenna for use, resulting in complex wiring inside the charging pile, low integration, and inconvenient maintenance.

[0042] In order to solve the problem of low integration and inconvenient maintenance of the communication board in related technologies, in a first aspect, with reference to Figure 1An embodiment of the present application provides a communication board, which comprises a power module 100, a 4G communication module 200, a board main control chip 300, an RFID communication module 400 and a communication interface 500, the 4G communication module 200, the board main control chip 300 and the RFID communication module 400 are connected with the power module 100, the 4G communication module 200 is used for realizing 4G network transmission; the board main control chip 300 is connected with the 4G communication module 200, the board main control chip 300 has Bluetooth communication and WiFi communication functions; the RFID communication module 400 is used for reading and transmitting RFID data, the RFID data comprises an RFID card number; the communication interface 500 is used for being connected with a charging pile main control chip, so as to realize data transmission between the communication board and the charging pile main control chip.

[0043] The power module 100 is used for converting a 5V power supply, for example, converting the 5V power supply into 3.3V or 1.8V, so as to meet different voltage requirements of various modules. The 4G communication module 200 is responsible for providing a full-network multi-frequency 4G communication function, realizing data interaction and control of the charging pile and a remote server. The board main control chip 300 serves as a main control chip, controls the 4G communication module 200, and provides WIFI and Bluetooth communication functions, realizing switching of various communication modes and data transmission.

[0044] Specifically, the board main control chip 300 in the embodiment can be a Loongan ESP32-WROVER-E chip, can realize 4G+Bluetooth+WIFI communication mode switching, and transmit data obtained through communication to the pile main control chip through a serial port.

[0045] In the embodiment, the power module 100, the 4G communication module 200, the board main control chip 300, the RFID communication module 400 and the communication interface 500 are integrated on the communication board, and the WiFi and Bluetooth communication functions can be realized through the board main control chip 300, and after being combined with the 4G communication module 200 and the RFID communication module 400, the communication board can realize a combination of 4G, WiFi, Bluetooth and RFID man-machine interaction modes, so that the integration degree of the communication board is high; and users can select according to use requirements, easily cope with operation scenes, weak signal scenes of underground garages, outdoor household scenes and the like, and the adaptability is high.

[0046] Reference Figure 1In some embodiments, the 4G communication module 200 includes a 4G communication chip 210, an on-board 4G antenna 220, and an on-board SIM card 230; the 4G communication chip 210 is connected with the power module 100; the on-board 4G antenna 220 and the on-board SIM card 230 are both connected with the 4G communication chip 210, the on-board 4G antenna 220 is used for receiving and transmitting wireless signals of the 4G network, so that the communication board communicates with the mobile network for data transmission; the on-board SIM card 230 is used for storing the user's identity information and network access credentials, so that the 4G communication module 200 is connected to the mobile network to realize data transmission.

[0047] The 4G communication chip 210 can be a SIMCOM A7670C 4G chip. The on-board 4G antenna 220 is directly integrated on the circuit board, which simplifies the installation process, reduces potential installation errors and signal interference. The on-board SIM card 230 is directly soldered on the circuit board, which avoids the use of a plug-in SIM card holder, reduces potential failure points, and simplifies the installation and maintenance process.

[0048] Specifically, the 4G communication chip 210 serves as the core control unit, responsible for handling 4G network communication and data transmission, managing connections with the on-board 4G antenna 220 and the on-board SIM card 230; the on-board 4G antenna 220 is responsible for signal reception and transmission, ensuring the communication quality between the 4G communication module 200 and the mobile network; the on-board SIM card 230 stores user identity information and network access credentials, enabling the 4G communication module 200 to connect to the mobile network; the power module 100 provides stable power supply to ensure the normal operation of the 4G communication chip 210 and other components.

[0049] Referring to Figure 1 In some embodiments, the 4G communication module 200 further includes an RC impedance matching sub-module 240 connected between the 4G communication chip 210 and the on-board 4G antenna 220, the RC impedance matching sub-module 240 is used for matching the impedance of the on-board 4G antenna 220.

[0050] The RC impedance matching sub-module 240 is an RC impedance matching circuit, which is used to optimize the impedance matching of the antenna and improve the quality and stability of the signal.

[0051] Specifically, in one detailed embodiment, the RC impedance matching circuit is as shown in Figure 2 The 4G antenna usually requires an impedance of 50Ω. Considering the differences in PCB manufacturing by different board manufacturers, the impedance of the antenna trace cannot be well controlled at 50Ω. Therefore, an RC matching circuit is added to properly fine-tune the impedance of the antenna to obtain better communication signal quality.

[0052] Referring to Figure 1In some embodiments, the 4G communication module 200 further comprises a networking indication module 250, which is configured to display the networking status of the 4G communication module 200.

[0053] The networking indication module 250 can be a networking indication circuit configured to display whether the 4G communication module 200 is successfully connected to the network. The networking indication module 250 can usually provide visual feedback through an LED light or other forms of indicators to help users understand the network connection status of the device.

[0054] Specifically, the networking indication circuit usually includes an LED light, a control sub-circuit and a current limiting resistor. The control sub-circuit includes a microcontroller or an output pin of the 4G communication chip 210, which is configured to control the lighting and extinguishing of the LED. The current limiting resistor is configured to limit the current through the LED to prevent the LED from being damaged by overloading.

[0055] Referring to Figure 1 In some embodiments, the communication board further comprises a serial communication level conversion module 600 connected between the 4G communication module 200 and the board main control chip 300. The serial communication level conversion module 600 is configured to perform level conversion of serial data.

[0056] The serial communication level conversion module 600 can be a serial communication level conversion circuit. When the serial communication level conversion circuit is connected with the board main control chip 300, it is configured to perform level conversion of serial data. When the serial communication level conversion circuit is connected with the 4G communication module 200, it is configured to perform serial data exchange.

[0057] For example, as shown in Figure 3 The serial communication level conversion circuit converts the 3.3V TXD transmission level of the board main control chip 300 ESP32 into the required 1.8V RXD reception level of the 4G module. It also converts the 1.8V TXD transmission level of the 4G communication module 200 into the required 1.8V RXD reception level of the board main control chip 300 ESP32.

[0058] Specifically, the circuit includes an upper first part and a lower second part. The upper first part circuit: this circuit converts the 3.3V level sent by the TXD of the board master chip 300 ESP32 into the 1.8V required by the RXD of the 4G module. When working, VDD_EXT network input is 1.8V, R18 is the pull-up resistor of the 4G_RXD pin, R19 is the base current limiting resistor of the triode, and the base forward working current is set to 230uA. Ib*β is greater than Ic, and the triode is in saturated conduction. When the 4G_ESP_TX output of the board master chip 300 ESP32 side outputs 3.3V, the Vce voltage of the triode is -1.5V, the triode is cut off, the 4G_RXD is pulled up to 1.8V, and the input is high level. When the 4G_ESP_TX output of the board master chip 300 ESP32 side outputs 0V, the Vce of the triode is 0.3V in saturated conduction, and the 4G_RXD is pulled down to 0.3V, so the input is low level.

[0059] The lower second part circuit: this circuit converts the 1.8V level sent by the TXD of the 4G module into the 3.3V required by the RXD of the ESP32 module. When working, VDD_EXT network input is 1.8V, R22 is the pull-up resistor of the 4G_ESP_RX pin, R133 is the base current limiting resistor of the triode, and the base forward working current is set to 230uA. Ib*β is greater than Ic, and the triode is in saturated conduction. When the 4G_TXD output of the 4G module side outputs 1.8V, the Vce voltage of the triode is 0V, the triode is cut off, the 4G_ESP_RX is pulled up to 3.3V, and the input is high level. When the 4G_TXD output of the 4G module side outputs 0V, the Vce of the triode is 0.3V in saturated conduction, and the 4G_RXD is pulled down to 0.3V, so the input is low level.

[0060] Reference Figure 1 In some embodiments, the communication board further includes a power-on / off control module 700 connected between the 4G communication module 200 and the board master chip 300, and the power-on / off control module 700 is used to realize the power-on / off control of the 4G communication module 200 by the board master chip 300.

[0061] Among them, the power-on / off control module 700 can be a power-on / off control circuit, and the 4G communication chip 210 has a power-on / off control pin. Since the working voltages of the board master chip 300 ESP32 and the 4G communication chip 210 are inconsistent, the pin cannot be directly connected for control. The power-on / off control pin of the 4G communication chip 210 is high by default when starting, and low when shutting down. Therefore, a triode control circuit is designed. When the control circuit signal is high, the triode is saturated and conducts to realize shutdown. When the control signal is low during shutdown, the triode is cut off to realize startup.

[0062] Specifically, the power-on / off control circuit is as follows Figure 4As shown, R143 is a triode pull-down resistor, preventing the triode from misdirecting on, R144 is a triode Q5 base limiting resistor, when the base input is 3.3V, the base input current is minimum 1.35ma, the 4G module switch control pin pull-up resistor is 50k, the maximum current is not more than 80uA, at this time Ib*β is greater than Ic, the triode is saturated and turned on, the 4G module switch control pin is powered on by default as low level, and is powered off as high level, when the control circuit signal is high, the triode is saturated and turned on to realize power off, and when the control signal is low, the triode is cut off to realize power on.

[0063] Referring to Figure 1 In some embodiments, the RFID communication module 400 includes an RFID chip 410 and an RFID data processing module 420. The RFID chip 410 is connected with the power module 100, and is configured to obtain data of an RFID card. The RFID data processing module 420 is connected with the RFID chip 410, and is configured to obtain and process the data of the RFID card to obtain RFID data.

[0064] Specifically, the RFID chip 410 can be an FM1750 chip. The RFID data processing module 420 can be an STM32F030F4P6 chip. The RFID card swiping function is realized by the FM1750+STM32F030F4P6. The RFID interactive data is obtained by the special RFID chip 410 FM1750, transmitted to the STM32F030F4P6 through SPI communication, and processed. Then, the obtained RFID card number is sent to the charging pile master control chip through the serial port. If the card number is correct, the charging can be realized. In addition, because the communication board is integrated with a 4G antenna and an RFID coil, an external antenna is not needed. Only a 5V power supply and two serial ports are used, and six lead wires can realize the 4G, WIFI, Bluetooth, and RFID card swiping full-function communication of the communication board.

[0065] Referring to Figure 1 In some embodiments, the RFID communication module 400 further includes a built-in RFID coil 430. The built-in RFID coil 430 is connected with the RFID chip 410. The built-in RFID coil 430 is configured to activate the RFID card and read the data of the RFID card, and transmit the data of the RFID card to the RFID chip 410.

[0066] The RFID coil generates an alternating magnetic field through electromagnetic induction. When an RFID card enters this magnetic field, the coil inside the card generates an induced current, thereby activating the card and reading its data. The onboard RFID coil 430 can be directly connected to the RFID chip 410, responsible for transmitting the read data to the RFID chip 410 for processing. The RFID chip 410 controls the operation of the RFID coil, processes the data received from the coil, and exchanges data with the main control unit. Alternatively, the RFID chip 410 can also be directly connected to the RFID coil to receive and process data from the coil and interact with the main control unit (e.g., an ARM Cortex M4 core).

[0067] Reference Figure 1 In some embodiments, the RFID communication module 400 further includes an LC resonant network 440, which is connected between the onboard RFID coil 430 and the RFID chip 410. The LC resonant network 440 works in conjunction with the RFID chip 410 to realize the reading and identification functions of RFID cards.

[0068] Specifically, the LC resonant network 440 provides frequency tuning and impedance matching functions, primarily by adjusting the values ​​of the inductor (L) and capacitor (C) to bring the RFID coil to resonance at a specific frequency (e.g., 13.56 MHz), thereby optimizing communication with the RFID card. The onboard RFID coil 430 and LC resonant network 440 are integrated on the circuit board, simplifying installation and maintenance; furthermore, the integrated design reduces external connections, lowering signal interference and failure rates.

[0069] For example, the LC resonant network 440 in this embodiment is as follows: Figure 5 As shown, the RFID operating frequency is 13.56MHz. The inductance of the designed card reader coil needs to be calculated using the formula f= Matching of the resonant capacitors is performed to ensure that the LC resonant frequency of the card reader is 13.56MHz. The main components, resonant capacitors C44 and C45, are C0G 220pF capacitors, and the resonant coil is set to 626nH to achieve a suitable resonant frequency. VMID is the internal reference voltage, which can adjust the amplitude of the resonant signal and control the card reader sensitivity. RX is the chip's RF signal input, used for RF signal detection.

[0070] Reference Figure 1 In some embodiments, the communication board also includes a TF card 800, which is connected to the main control chip 300 on the board and is used to store the configuration information and / or log data of the communication board.

[0071] Specifically, the TF card 800 can store the configuration file of the communication board, such as network settings, device ID, communication protocol parameters, etc. These configuration information can be read and loaded into the system at device startup, so that the communication board can work according to the preset parameters; the TF card 800 can also be used to store operation logs, error logs, communication records and other data of the communication board, which have certain reference value for device maintenance, troubleshooting and performance analysis; in addition, the TF card 800 can also be used as a backup storage medium to store temporary data, user data or other information that needs to be saved for a long time.

[0072] The communication board in the present application is a high-integration and multi-function communication board integrating 4G, WIFI, Bluetooth and RFID card swiping communication. In the structural design, the Loongan ESP32-WROVER-E is used as the main control chip to control the SIMCOM A7670C 4G module, realizing WIFI+Bluetooth+full-network multi-frequency 4G communication. The 4G+Bluetooth+WIFI communication mode switching can be easily realized through the ESP32-WROVER-E, and the data obtained by communication is transmitted to the pile master control chip through the serial port. The RFID card swiping function is realized by FM1750+STM32F030F4P6, and the RFID interaction data is obtained by the special RFID chip 410 FM1750, which is transmitted to the STM32F030F4P6 through SPI communication for analysis and processing, and then the obtained RFID card number is sent to the charging pile master control chip through the serial port. The card number is correct, and the charging can be realized. The 4G antenna and RFID coil are integrated on the board, and there is no need to externally connect the antenna. Only using 5V power supply and two serial ports, six leads can realize the full-function communication of the communication board. That is, the communication board of the present application realizes the functions of 4G, WIFI, Bluetooth and RFID card swiping through high-integration design, and integrates the 4G antenna and RFID coil on the board, without the need for external antenna, simplifying the installation and wiring. In addition, through the 5V power supply and two serial ports, only six leads can realize full-function communication, improving the reliability of the system and the convenience of the user.

[0073] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0074] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present specification.

[0075] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A communication board, characterized by, The communication board comprises: a power module, connected with the power module: a 4G communication module for realizing 4G network transmission; a board main control chip connected with the 4G communication module, the board main control chip having Bluetooth communication and WiFi communication functions; an RFID communication module for reading and transmitting RFID data, the RFID data including an RFID card number; a communication interface for connecting with a charging pile main control chip to realize data transmission between the communication board and the charging pile main control chip.

2. The communications board of claim 1, wherein, The 4G communication module comprises: a 4G communication chip connected with the power module, and connected with the 4G communication chip: an on-board 4G antenna for receiving and transmitting 4G network wireless signals to enable the communication board to transmit data and communicate with a mobile network; an on-board SIM card for storing user identity information and network access credentials to enable the 4G communication module to be connected to a mobile network to realize data transmission.

3. The communications board of claim 2, wherein, The 4G communication module further comprises an RC impedance matching sub-module connected between the 4G communication chip and the on-board 4G antenna, the RC impedance matching sub-module being used to match the impedance of the on-board 4G antenna.

4. The communications board of claim 2, wherein, The 4G communication module further comprises a networking indication module for displaying the networking state of the 4G communication module.

5. The communications board of claim 1, wherein, Further comprising a serial communication level conversion module connected between the 4G communication module and the board main control chip, the serial communication level conversion module being used to perform level conversion of serial data.

6. The communications board of claim 1, wherein, Further comprising a power-on / off control module connected between the 4G communication module and the board main control chip, the power-on / off control module being used to realize on / off control of the 4G communication module by the board main control chip.

7. The communications board of claim 1, wherein, The RFID communication module comprises: an RFID chip connected with the power module, the RFID chip being used to acquire data of an RFID card; an RFID data processing module connected with the RFID chip, used to acquire and process data of the RFID card to obtain the RFID data.

8. The communications board of claim 7, wherein, The RFID communication module further comprises an on-board RFID coil connected with the RFID chip, the on-board RFID coil being used to activate the RFID card, read data of the RFID card, and transmit the data of the RFID card to the RFID chip.

9. The communications board of claim 8, wherein, The RFID communication module further comprises an LC resonance network connected between the on-board RFID coil and the RFID chip, the LC resonance network cooperating with the RFID chip to realize reading and identification of the RFID card.

10. The communications board of claim 1, wherein, Further comprising a TF card connected with the board main control chip, the TF card being used to store configuration information and / or log data of the communication board.

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