Alternating current charging pile with dual-mode communication module

Abstract

The utility model discloses an AC charging pile with a dual-mode communication module. The AC charging pile comprises a master control CPU, an AC acquisition and metering module, the dual-mode communication module and an AC charging pile body. The alternating current acquisition and metering module is electrically connected with a power supply circuit of the charging pile and the main control CPU and is used for acquiring working parameters of charging of the charging pile and transmitting the working parameters to the main control CPU; the dual-mode communication module is electrically connected with the main control CPU, and the main control CPU transmits working parameters to a data center through the dual-mode communication module; the alternating current charging gun is electrically connected with a power supply circuit of the charging pile and the main control CPU; the alternating current charging gun is controlled by the main control CPU and charges a load unit to be charged. By arranging the dual-mode communication module and based on dual-channel transmission, efficient and stable data exchange can be achieved, data are transmitted through a power line, additional wiring is not needed, cost and construction time are saved, and the system is suitable for different voltage environments and flexible to use.

Description

Technical Field

[0001] This utility model relates to an AC charging pile with a dual-mode communication module, belonging to the technical field of AC charging piles. Background Technology

[0002] With the increasing popularity of electric vehicles, there are more and more electric vehicles in remote areas and underground parking lots. As a result, there are more and more AC charging piles for electric vehicles in these areas. However, the poor communication signal in remote areas and underground parking lots affects the transmission of charging data from AC charging piles to the charging management platform, thus affecting the charging stability of AC charging piles. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an AC charging pile with a dual-mode communication module. The dual-mode communication module aims to provide better signal protection for communication between the charging pile and the charging management platform, thereby improving the stability of data transmission.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] In a first aspect, this utility model provides an AC charging pile with a dual-mode communication module, comprising:

[0006] Main control CPU;

[0007] The data acquisition and metering module is electrically connected to the power supply circuit of the charging pile and the main control CPU. It is used to collect the charging operation parameters of the charging pile and transmit them to the main control CPU.

[0008] A dual-mode communication module is electrically connected to the main control CPU, and the main control CPU transmits the operating parameters to the data center through the dual-mode communication module.

[0009] An AC charging gun is electrically connected to the power supply circuit of the charging pile and the main control CPU; the AC charging gun is controlled by the main control CPU and charges the load unit to be charged.

[0010] Furthermore, the dual-mode communication module includes a high-speed carrier communication module and a high-speed low-power wireless communication module.

[0011] Furthermore, the main control CPU has pins RX, TX, GPIO1, GPIO2 and GPIO3;

[0012] The dual-mode communication module has pins L, N, VCC, GND, TXD, RXD, STA, REST, and EVENOUT.

[0013] Specifically, pin RX is connected to one end of resistor R1 and one end of resistor R2, the other end of resistor R2 is connected to pin TXD, and the other end of resistor R1 is connected to the power supply; pin RXD and pin TX are respectively connected to the two ends of resistor R3; pin STA is connected to one end of resistor R5 and one end of resistor R4, the other end of resistor R5 is connected to pin GPIO1, and the other end of resistor R4 is connected to the power supply; pin REST and pin GPIO2 are respectively connected to the two ends of resistor R6; pin EVENOUT and pin GPIO3 are respectively connected to the two ends of resistor R7; and pin VCC and pin GND are respectively connected to the two ends of capacitor C1.

[0014] Furthermore, the AC charging pile with dual-mode communication module also includes a detection circuit;

[0015] The detection circuit is electrically connected to the main control CPU and the power supply circuit; the detection circuit is used to detect charging leakage and transmit the detected information to the main control CPU.

[0016] Furthermore, the AC charging pile with dual-mode communication module also includes a charging relay and a control circuit;

[0017] The charging relay and control circuit are electrically connected to the main control CPU, the power supply circuit, and the AC charging gun; the main control CPU controls the on / off state of the charging relay through the control circuit to control the charging state of the AC charging gun.

[0018] Furthermore, the AC charging pile with dual-mode communication module also includes a gun temperature detection circuit;

[0019] The gun temperature detection circuit is electrically connected to the AC charging gun and the main control CPU; the gun temperature detection circuit is used to detect the temperature value of the AC charging gun head and send it to the main control CPU.

[0020] Furthermore, the AC charging pile with dual-mode communication module also includes a CC signal circuit;

[0021] The CC signal circuit is electrically connected to the AC charging gun and the main control CPU. The CC signal circuit is used to generate a CC signal and send it to the main control CPU after the AC charging gun is physically connected to the load unit.

[0022] Furthermore, the AC charging pile with dual-mode communication module also includes a CP signal circuit;

[0023] The CP signal circuit is electrically connected to the AC charging gun and the main control CPU; the CP signal circuit provides the CP signal for charging guidance and sends the CP signal to the main control CPU.

[0024] Furthermore, the AC charging pile with dual-mode communication module also includes a human-machine interaction module;

[0025] The human-machine interface module is electrically connected to the main control CPU; the human-machine interface module is used to input control commands and display operating parameters.

[0026] Furthermore, the AC charging pile with dual-mode communication module also includes an auxiliary power supply;

[0027] The auxiliary power supply is electrically connected to the power supply circuit and the main control CPU; the auxiliary power supply obtains power through the power supply circuit and is used to generate DC power to power the main control CPU.

[0028] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0029] This utility model provides an AC charging pile with a dual-mode communication module. By setting the dual-mode communication module, based on dual-channel transmission, efficient and stable data exchange can be achieved. Data is transmitted through power lines, eliminating the need for additional wiring, saving costs and construction time. It is suitable for different voltage environments and is flexible in use.

[0030] In this invention, the dual-mode communication module is electrically connected to the main control CPU. The main control CPU transmits the working parameters to the data center through the dual-mode communication module. This invention improves line utilization by sharing a single line for power lines and data signals. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram of an AC charging pile with a dual-mode communication module provided in an embodiment of this utility model;

[0032] Figure 2 This is a schematic diagram showing the connection between the dual-mode communication module and the main control CPU of the AC charging pile with dual-mode communication module provided in this embodiment of the utility model. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0036] Please see Figure 1 This embodiment introduces an AC charging pile with a dual-mode communication module, including: a main control CPU, a metering and data acquisition module, a dual-mode communication module, and an AC charging pile.

[0037] The data acquisition and metering module is electrically connected to the power supply circuit of the charging pile and the main control CPU. It is used to collect the charging operation parameters of the charging pile and transmit them to the main control CPU. The dual-mode communication module is electrically connected to the main control CPU. The main control CPU transmits the operation parameters to the data center through the dual-mode communication module. The AC charging gun is electrically connected to the power supply circuit of the charging pile and the main control CPU. The AC charging gun is controlled by the main control CPU and charges the load unit to be charged.

[0038] In the above scheme, the main control CPU can control the AC charging gun load unit to provide charging to the load unit. Simultaneously, the data acquisition and metering module collects the charging pile's operating parameters, and the main control CPU transmits these parameters to the data center via the dual-mode communication module. Based on the dual-channel transmission of the dual-mode communication module, efficient and stable data exchange can be achieved. Data transmission via power lines eliminates the need for additional wiring, saving costs and construction time. It is suitable for different voltage environments and offers flexible use. The power supply circuit is equipped with a live wire (L) and a neutral wire (N).

[0039] Specifically, the dual-mode communication module includes a high-speed carrier communication module (HPLC) and a high-speed low-power wireless communication module (HRF).

[0040] Furthermore, such as Figure 2 As shown, in this embodiment, the main control CPU is model R5F565N7ADFP, and the main control CPU has pins RX, TX, GPIO1, GPIO2, and GPIO3; the dual-mode communication module has pins L, N, VCC, GND, TXD, RXD, STA, REST, and EVENOUT. Pin RX is connected to one end of resistor R1 and one end of resistor R2, the other end of resistor R2 is connected to pin TXD, and the other end of resistor R1 is connected to the power supply; pins RXD and TX are respectively connected to both ends of resistor R3; pin STA is connected to one end of resistor R5 and one end of resistor R4, the other end of resistor R5 is connected to pin GPIO1, and the other end of resistor R4 is connected to the power supply; pins REST and GPIO2 are respectively connected to both ends of resistor R6; pins EVENOUT and GPIO3 are respectively connected to both ends of resistor R7; pins VCC and GND are respectively connected to both ends of capacitor C1.

[0041] The dual-mode communication module (HPLC+HRF) combines the heterogeneous channel advantages of high-speed power line carrier (HPLC) communication and high-speed low-power wireless communication (HRF). It employs both HPLC and HRF technologies for data transmission, achieving high-speed, stable, bidirectional data transmission over the power line via dual channels. The live wire (L) and neutral wire (N) of the power line enter the dual-mode communication module (HPLC+HRF) through a varistor RVD1. The varistor RVD1 protects the dual-mode communication module (HPLC+HRF) from lightning surges. The live wire (L) and neutral wire (N) supply power to the dual-mode communication module (HPLC+HRF) on one hand, and on the other hand, the dual-mode communication module (HPLC+HRF)... The HPLC+HRF dual-mode communication module injects a carrier signal into the power line for data transmission. The VCC pin of the dual-mode communication module (HPLC+HRF) provides the module's operating power supply voltage, supplied by the AC auxiliary power supply (switching power supply). The GND pin is the common reference terminal for communication ground. The HPLC+HRF dual-mode communication module (HPLC+HRF) sends signals to the main control CPU via the TXD pin and receives signals from the main control CPU via the RXD pin. The STA pin of the HPLC+HRF dual-mode communication module (HPLC+HRF) is the module status output, which is input to the main control CPU via the GPIO1 pin. During the module's transmission process, it outputs a high-impedance state; its normal state is low. The RESET pin is the reset input, active low, controlled by the output of the GPIO2 pin of the main control CPU. The EVENOUT pin is the module's event status output; when no event is actively reported, it outputs a low level. It is input to the main control CPU's GPIO3 pin. Resistors R1 and R4 are pull-up resistors to enhance the module's output capability. Capacitor C1 is for power supply filtering. Resistors R2, R3, R5, R6, and R7 are series resistors with impedance matching and current limiting functions. The charging control platform or charging control center converts charging commands into high-frequency carrier signals and injects them into the power line. In the dual-mode communication module (HPLC+HRF), the HPLC channel receives the high-frequency carrier signal through the power line and demodulates the raw data. Simultaneously, it sends the data to the main control CPU via the TXD pin and the RX pin to control the AC charging station. On the other hand, the main control CPU... The CPU transmits AC charging data and information to the dual-mode communication module (HPLC+HRF) via pin TX. After transmission, the HPLC channel in the dual-mode communication module (HPLC+HRF) converts the AC charging data and information into a high-frequency carrier signal and injects it into the power line. The charging control platform or charging control center then receives the high-frequency carrier signal from the power line and demodulates the original data. Conversely, the HRF channel in the dual-mode communication module (HPLC+HRF) can also receive high-frequency radio frequency signals from the charging control platform or charging control center via an antenna, demodulate the original data, and send it to the CPU to control AC charging.It can also convert charging data and information sent by the main control CPU into high-frequency radio frequency signals and transmit them wirelessly to the charging control platform or charging control center via an antenna. This ensures efficient data transmission and guarantees the stability of AC charging even in areas where power line signals are unstable or unavailable. The dual-mode communication module (HPLC+HRF) combines high-speed power line carrier communication (HPLC) and high-speed wireless communication (HRF), enabling efficient and stable data exchange through dual-channel transmission.

[0042] In addition, the AC charging pile with dual-mode communication module provided in this embodiment also includes: a detection circuit, a charging relay, a control circuit, a gun temperature detection circuit, a CC signal circuit, a CP signal circuit, a human-machine interaction module, an auxiliary power supply, and a 485 circuit.

[0043] The system includes a detection circuit electrically connected to the main control CPU and the power supply circuit, and a built-in residual current transformer. This detection circuit detects charging leakage and transmits the detected information to the main control CPU. A charging relay and control circuit electrically connects to the main control CPU, the power supply circuit, and the AC charging gun. The main control CPU controls the on / off state of the AC charging gun by controlling the charging relay through the control circuit. A gun temperature detection circuit electrically connects to the AC charging gun and the main control CPU. This circuit detects the temperature of the charging gun head and transmits it to the main control CPU. A CC signal circuit electrically connects to the AC charging gun and the main control CPU. This circuit generates a CC signal and transmits it to the main control CPU after the AC charging gun is physically connected to the load unit. A CP signal circuit electrically connects to the AC charging gun and the main control CPU. This circuit provides a CP signal for charging guidance and transmits the CP signal to the main control CPU. A human-machine interface module electrically connects to the main control CPU. This module is used to input control commands and display operating parameters. The auxiliary power supply is electrically connected to the power supply circuit and the main control CPU; the auxiliary power supply obtains power through the power supply circuit and is used to generate DC power to power the main control CPU.

[0044] In the above scheme, the data acquisition and metering process includes collecting operating parameters such as the charging voltage and current of the AC charging pile and transmitting them as data signals to the main control CPU. Then, a dual-mode communication module (HPLC+HRF) converts these parameters into high-frequency carrier signals, which are input to the power line and transmitted to the data center and displayed on the charging pile screen. The auxiliary power supply is a switching power supply, characterized by high efficiency and small size. It converts the AC voltage input from the AC charging pile into DC voltage to supply the operating voltage for the main control CPU and various circuits. The residual current transformer and detection circuit enable residual current detection, i.e., charging leakage detection, and send this information to the main control CPU to control the charging on / off state. The charging relay and control circuit allow the main control CPU to control the charging on / off state of the AC charging pile, thus protecting charging safety. The AC charging pile charges the electric vehicle through the AC charging gun. The gun temperature is transmitted through the thermistor at the charging gun head to the gun temperature detection circuit, amplified, and sent to the main control CPU. When the gun temperature exceeds a preset limit, the main control CPU will control the charging relay to disconnect and stop charging. The CC signal circuit for confirming the charging gun connection provides a CC signal to the main control CPU to confirm the charging connection status between the charging gun and the electric vehicle. The main control CPU sends the charging guidance CP signal to the load unit, i.e., the electric vehicle, through the charging gun via the charging guidance CP signal circuit. Charging is controlled interactively. The physical connection is confirmed by the CC signal when the AC charging gun is inserted into the electric vehicle. The voltage value and PWM wave of the charging guidance CP signal determine whether charging is normal and the charging current. Charging parameters and charging time can be set through the human-machine interface module. The 485 circuit can read the charging data of the AC charging pile. The metering pulse output of the 485 circuit can calibrate the metering data of the AC charging pile. Example

[0045] This embodiment provides an AC charging pile with a dual-mode communication module. The difference from Embodiment 1 is that this embodiment adds an emergency stop circuit with an emergency stop control function. The emergency stop circuit is electrically connected to the charging relay and the control circuit. The emergency stop circuit interrupts the charging circuit in case of an emergency. The emergency stop circuit controls the power supply voltage of the charging relay through an emergency stop switch to control the on / off state of the charging relay, i.e., the charging on / off state. In the event of uncontrollable situations such as a charging vehicle catching fire or leakage, manually pressing the emergency stop switch can stop charging.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An AC charging pile with a dual-mode communication module, characterized in that, include: Main control CPU; The data acquisition and metering module is electrically connected to the power supply circuit of the charging pile and the main control CPU. It is used to collect the charging operation parameters of the charging pile and transmit them to the main control CPU. A dual-mode communication module is electrically connected to the main control CPU, and the main control CPU transmits the operating parameters to the data center through the dual-mode communication module. An AC charging gun is electrically connected to the power supply circuit of the charging pile and the main control CPU; the AC charging gun is controlled by the main control CPU and charges the load unit to be charged.

2. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The dual-mode communication module includes a high-speed carrier communication module and a high-speed low-power wireless communication module.

3. The AC charging pile with dual-mode communication module according to claim 2, characterized in that: The main control CPU has pins RX, TX, GPIO1, GPIO2 and GPIO3; The dual-mode communication module has pins L, N, VCC, GND, TXD, RXD, STA, REST, and EVENOUT. Specifically, pin RX is connected to one end of resistor R1 and one end of resistor R2, the other end of resistor R2 is connected to pin TXD, and the other end of resistor R1 is connected to the power supply; pin RXD and pin TX are respectively connected to the two ends of resistor R3; pin STA is connected to one end of resistor R5 and one end of resistor R4, the other end of resistor R5 is connected to pin GPIO1, and the other end of resistor R4 is connected to the power supply; pin REST and pin GPIO2 are respectively connected to the two ends of resistor R6; pin EVENOUT and pin GPIO3 are respectively connected to the two ends of resistor R7; and pin VCC and pin GND are respectively connected to the two ends of capacitor C1.

4. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a detection circuit; The detection circuit is electrically connected to the main control CPU and the power supply circuit; the detection circuit is used to detect charging leakage and transmit the detected information to the main control CPU.

5. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a charging relay and control circuit; The charging relay and control circuit are electrically connected to the main control CPU, the power supply circuit, and the AC charging gun; the main control CPU controls the on / off state of the charging relay through the control circuit to control the charging state of the AC charging gun.

6. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a gun temperature detection circuit. The gun temperature detection circuit is electrically connected to the AC charging gun and the main control CPU; the gun temperature detection circuit is used to detect the temperature value of the AC charging gun head and send it to the main control CPU.

7. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a CC signal circuit; The CC signal circuit is electrically connected to the AC charging gun and the main control CPU. The CC signal circuit is used to generate a CC signal and send it to the main control CPU after the AC charging gun is physically connected to the load unit.

8. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a CP signal circuit; The CP signal circuit is electrically connected to the AC charging gun and the main control CPU; the CP signal circuit provides the CP signal for charging guidance and sends the CP signal to the main control CPU.

9. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes a human-machine interaction module; The human-machine interface module is electrically connected to the main control CPU; the human-machine interface module is used to input control commands and display operating parameters.

10. The AC charging pile with dual-mode communication module according to claim 1, characterized in that: The AC charging pile with dual-mode communication module also includes an auxiliary power supply; The auxiliary power supply is electrically connected to the power supply circuit and the main control CPU; the auxiliary power supply obtains power through the power supply circuit and is used to generate DC power to power the main control CPU.

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