Charging control module supporting multiple communication modes

Abstract

The utility model relates to a charging control module supporting multiple communication modes, which belongs to the technical field of alternating current charging piles and comprises a first MCU (microprogrammed control unit) with an SD (secure digital) interface, a first RS232 chip electrically connected with the first MCU, a WiFi-Bluetooth module integrating WiFi and Bluetooth, an Ethernet control chip and a 4G module mini-pcie interface. The first MCU, the second MCU, the second RS232 chip, the RS485 chip and the Bluetooth module are electrically connected with the second MCU; wherein the first MCU communicates with the second MCU through asynchronous transceiving transmission. The alternating current pile charging control module effectively solves the technical problem that the existing alternating current pile charging control module cannot realize coexistence of multiple communication modes.

Description

Technical Field

[0001] The utility model relates to the technical field of AC charging piles, and in particular to a charging control module supporting multiple communication modes. Background Art

[0002] Charging stations are categorized as DC, AC, and integrated AC / DC. DC charging stations typically offer higher power, ranging from 80kW, 120kW, and 160kW, commonly known as "fast charging." AC charging stations typically offer lower power, ranging from 3.5kW, 7kW, 11kW, and 22kW, commonly known as "slow charging." Charging stations can be activated using a charging card, Bluetooth, 4G wireless, or Ethernet. Charging data and parameter settings are displayed on a screen or via an app.

[0003] Charging piles have both an input and an output. The input is directly connected to the power grid, while the output is connected directly to the electric vehicle via a cable. Charging piles can be floor-standing or wall-mounted, and are located in public buildings, charging stations, and residential parking lots. AC charging piles are preferred for home use.

[0004] At present, the charging control module of AC charging piles has CP and CC control guidance functions, communication functions such as RS485, RS232, and Bluetooth, and DI / DO functions such as emergency stop and feedback. It can realize the connection of applications such as electricity meters, screens, and APPs, collect corresponding data and upload charging information in a centralized manner. However, this type of AC pile charging control module cannot achieve the coexistence of multiple communication methods without adding circuits or components, cannot meet the needs of different industries, and cannot provide a high-quality charging experience. Utility Model Content

[0005] In view of this, it is necessary to provide a charging control module that supports multiple communication modes to solve the technical problem that the existing AC pile charging control module cannot realize the coexistence of multiple communication modes.

[0006] In order to solve the above problems, the present invention provides a charging control module that supports multiple communication modes and is applied to AC charging piles, including:

[0007] A first MCU with an SD interface, a first RS232 chip electrically connected to the first MCU, a WiFi-Bluetooth module integrating WiFi and Bluetooth, an Ethernet control chip, and a 4G module mini-PCIE interface;

[0008] A second MCU, and a second RS232 chip, an RS485 chip, and a Bluetooth module electrically connected to the second MCU;

[0009] The first MCU and the second MCU communicate via asynchronous transceiver transmission.

[0010] In one possible implementation, the first RS232 chip includes a first interface, a second interface, a first output port, and a second output port. The first interface is electrically connected to the first communication serial port of the first MCU, and the corresponding first output port serves as a debugging interface for the charging control module. The second interface is electrically connected to the second communication serial port of the first MCU, and the corresponding second output port serves as an interface for connecting to the charging pile display screen.

[0011] The second RS232 chip includes a third interface, a fourth interface, a third output port and a fourth output port, wherein the third interface is electrically connected to the third communication serial port of the second MCU, and the corresponding third output port serves as the interface of the slave card reader of the charging pile; the fourth interface is connected to the fourth communication serial port of the first MCU, and the corresponding fourth output port serves as the interface of the master card reader of the charging pile.

[0012] In one possible implementation, the WiFi-Bluetooth module includes an SDIO interface and a host control interface;

[0013] The SDIO interface of the WiFi-Bluetooth module is electrically connected to the SD interface of the first MCU to realize WiFi signal communication;

[0014] The host control interface of the WiFi-Bluetooth module is electrically connected to the asynchronous transceiver transmission serial port of the first MCU for realizing Bluetooth signal communication.

[0015] In a possible implementation, the medium dependent interface of the Ethernet control chip is also electrically connected to the RJ45 network interface.

[0016] In a possible implementation, the mini-pcie interface of the 4G module is electrically connected to the first MCU via a USB bus;

[0017] The charging control module is electrically connected to the mini-pcie interface of the 4G module through a self-flying SIM card holder with insertion detection.

[0018] In a possible implementation, the receiving and transmitting pins of the RS485 chip are electrically connected to the asynchronous receiving and transmitting serial port of the second MCU, and the output port of the RS485 chip serves as an interface for communication with the electric meter.

[0019] In a possible implementation, the transceiver pin of the Bluetooth module is electrically connected to the asynchronous transceiver transmission serial port of the second MCU;

[0020] The Bluetooth module is also equipped with a Bluetooth burning port, which is electrically connected to the debugging transceiver pin of the Bluetooth module and is used for Bluetooth connection and parameter setting.

[0021] In a possible implementation, the second MCU is further electrically connected to the CP-CC control guidance module, the emergency stop feedback interface, the status display drive interface block, and the A / B type leakage detection interface.

[0022] In a possible implementation, the CP-CC control pilot module adopts a power isolation solution and implements switching between the CC control mode and the CP control mode through a relay.

[0023] In one possible implementation, the emergency stop feedback interface uses the emergency stop switch of the second MCU as DI feedback for power failure detection and power failure retention;

[0024] The status display drive interface uses the IO pin of the second MCU as a DO driver to display the charging status and faults;

[0025] The A / B type leakage detection interface is electrically connected to the AD port of the second MCU, and is used to determine whether the zero-crossing protection mechanism is triggered and whether there is leakage according to the residual current.

[0026] The beneficial effect of the present invention is that the present invention provides a charging control module that supports multiple communication modes, which is divided into a master control MCU and a slave control MCU. The two control MCUs are respectively connected to different control units including RS232 chip, WiFi-Bluetooth module, Ethernet control chip, and RS485 chip, which can realize a variety of different charging start-up methods and the coexistence of multiple different communication modes. It can effectively solve the configuration needs of different industries, provide a high-quality charging experience, and effectively solve the technical problem that the existing AC pile charging control module cannot realize the coexistence of multiple communication modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of an embodiment of a charging control module provided by the present utility model;

[0028] Figure 2 A schematic structural diagram of an embodiment of a first RS232 and a second RS232 provided by the present invention;

[0029] Figure 3 This is a schematic structural diagram of an embodiment of a WiFi-Bluetooth module provided by the present utility model;

[0030] Figure 4 This is a structural diagram of an embodiment of an Ethernet control chip provided by the present invention;

[0031] Figure 5 This is a structural diagram of an embodiment of the 4G module mini-pcie interface provided by the present invention;

[0032] Figure 6 A schematic structural diagram of an RS485 chip according to an embodiment of the present invention;

[0033] Figure 7 This is a schematic structural diagram of an embodiment of a Bluetooth module provided by the present invention;

[0034] Figure 8 This is a principle connection diagram of DI feedback, DO drive and AD sampling provided by the utility model. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0039] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] like Figure 1 As shown, a specific embodiment of the present invention discloses a charging control module that supports multiple communication modes, including:

[0041] A first MCU-U13 with an SD interface, a first RS232 chip U19 electrically connected to the first MCU-U13, a WiFi-Bluetooth module U15 integrating WiFi and Bluetooth, an Ethernet control chip U18, and a 4G module mini-PCIE interface J3;

[0042] A second MCU-U21, and a second RS232 chip U20, an RS485 chip U30 and a Bluetooth module U31 electrically connected to the second MCU-U21;

[0043] The first MCU and the second MCU communicate via asynchronous transceiver transmission.

[0044] Specifically, the UART8_TX serial port of the first MCU-U13 is electrically connected to the UART4_RX serial port of the second MCU, and the UART8_RX serial port of the first MCU is electrically connected to the UART4_TX serial port of the second MCU.

[0045] It should be noted that, during implementation, the first MCU-U13 serves as the master control MCU, and the second MCU-U21 serves as the slave control MCU.

[0046] like Figure 2 In one possible implementation, the first RS232 chip U19 includes a first interface, a second interface, a first output port J12, and a second output port J9. The first interface is electrically connected to the first communication serial port of the first MCU-U13, and the corresponding first output port J12 serves as a debugging interface for the charging control module; the second interface is electrically connected to the second communication serial port of the first MCU-U13, and the corresponding second output port J9 serves as an interface for connecting to the charging pile display screen;

[0047] The second RS232 chip U20 includes a third interface, a fourth interface, a third output port J10 and a fourth output port J23, wherein the third interface is electrically connected to the third communication serial port of the second MCU-U20, and the corresponding third output port J10 serves as the interface of the slave card reader of the charging pile; the fourth interface is connected to the fourth communication serial port of the first MCU-U13, and the corresponding fourth output port J23 serves as the interface of the master card reader of the charging pile.

[0048] Specifically, the first interface is electrically connected to the TX0 and RX0 serial ports of the first MCU-U13 respectively; the second interface is electrically connected to the TX2 and RX2 serial ports of the first MCU-U13 respectively; the third interface is electrically connected to the TX2 and RX2 serial ports of the second MCU-U21; and the fourth interface is electrically connected to the TX3 and RX3 serial ports of the first MCU.

[0049] Furthermore, the output interface J12 pins correspond to +5V, UR0-TX, UR0-RX, GND, the output interface J9 pins correspond to +5V, UR2-TX, UR2-RX, GND, the output interface J10 pins correspond to +5V, UR3-TX, UR3-RX, GND, and the output interface J23 pins correspond to +5V, TX, RX, GND.

[0050] like Figure 3 ,In one possible implementation, the WiFi-Bluetooth module U15 includes an SDIO interface and a host control interface;

[0051] The SDIO interface of the WiFi-Bluetooth module U15 is electrically connected to the SD interface of the first MCU to realize WiFi signal communication;

[0052] The host control interface of the WiFi-Bluetooth module U15 is electrically connected to the URAT serial port of the first MCU for realizing Bluetooth signal communication.

[0053] Furthermore, SDIO_DATA0 of the WiFi-Bluetooth module U15 is electrically connected to SD1_DATA0 of the first MCU, SDIO_DATA1 of the WiFi-Bluetooth module is electrically connected to SD1_DATA1 of the first MCU, SDIO_DATA3 of the WiFi-Bluetooth module is electrically connected to SD1_DATA3 of the first MCU, SDIO_CLK of the WiFi-Bluetooth module is electrically connected to SD1_CLK of the first MCU, and SDIO_CMD of the WiFi-Bluetooth module is connected to SD1_CMD of the first MCU;

[0054] The HCI_RX_BT of the WiFi-Bluetooth module is electrically connected to the serial port UART1_TX of the first MCU, the HCI_TX_BT of the WiFi-Bluetooth module is electrically connected to the UART1_RX of the first MCU, the HCI_RTS_BT of the WiFi-Bluetooth module is electrically connected to the UART1_RTS of the first MCU, and the HCI_CTS_BT of the WiFi-Bluetooth module is electrically connected to the UART1_CTS of the WiFi-Bluetooth module.

[0055] like Figure 4 In a possible implementation, the medium-dependent interface of the Ethernet control chip U18 is also electrically connected to the RJ45 network interface.

[0056] It should be noted that the Ethernet control chip U18 is connected to the corresponding pins of the main control MCU-U13 through the E_TXD0, E_RXD0, E_TXD1, and E_RXD1 pins. The network interface J4 has an LED display and built-in isolation, and supports 8-core twisted pair network cables.

[0057] Among them, the MDI_TP pin of the Ethernet control chip U18 is electrically connected to the TD+ pin of the RJ45 network interface, the MDI_TN pin of the Ethernet control chip is electrically connected to the TD- pin of the RJ45 network interface, the MDI_RP pin of the Ethernet control chip is electrically connected to the RD+ pin of the RJ45 network interface, and the MDI_RN pin of the Ethernet control chip is electrically connected to the RD- pin of the RJ45 network interface, for realizing Ethernet communication.

[0058] like Figure 5 In one possible implementation, the 4G module mini-pcie interface J3 is electrically connected to the first MCU-U13 via the USB bus of DM+ and DP-;

[0059] The charging control module is electrically connected to the USIM_DATA, USIM_CLK, USIM_RST, and USIM_DET of the 4G module mini-PCIE interface through the self-popup SIM card holder P2 with insertion detection.

[0060] like Figure 6 In a possible implementation, the transceiver pins of the RS485 chip U35 are electrically connected to the asynchronous transceiver transmission serial port of the second MCU-U21, and the output port of the RS485 chip serves as the communication interface of the electric meter.

[0061] Specifically, the DI pin of the RS485 chip U35 is electrically connected to the UASRT1-TX serial port of the second control MCU-U21, the RO pin of the RS485 chip is electrically connected to the UASRT1-RX serial port of the second MCU, and the RE and DE pins of the RS485 chip are electrically connected to the UASRT1-RT serial port of the second MCU.

[0062] like Figure 7 In one possible implementation, the receiving and transmitting pins of the Bluetooth module U31 are electrically connected to the asynchronous receiving and transmitting serial port of the second MCU-U21;

[0063] Specifically, the TXD pin of the Bluetooth module U31 is electrically connected to the UART3_RX serial port of the second MCU-U21, and the RXD pin of the Bluetooth module is electrically connected to the UART3_TX serial port of the second MCU.

[0064] The Bluetooth module U31 is also equipped with a Bluetooth burning port J1, which is electrically connected to the debug transceiver pins of the Bluetooth module (i.e., corresponding to the DEBUG_RX and DEBUG_TX pins) for Bluetooth connection and parameter setting.

[0065] In a possible implementation, the second MCU is also electrically connected to the CP-CC control guidance module, the emergency stop feedback interface, the status display drive interface block, and the A / B type leakage detection interface.

[0066] Among them, the emergency stop feedback interface, status display drive interface, and A / B type leakage detection interface module are respectively connected to the emergency stop interface J15 (+12V-1, +12V), the status display interface J18 (5V, 5V1, G, R, B, GND), the A type leakage detection interface J17 (DI+, DI-), and the B type leakage detection interface J19 (TEST, CAL, GND, TRIP, 5V). They are connected to the corresponding pins of the second MCU-U21. The specific connection method is as follows Figure 8 shown.

[0067] Furthermore, the emergency stop feedback interface uses the emergency stop switch of the second MCU as DI feedback for power failure detection and power failure retention;

[0068] The status display driver interface uses the IO pin of the second MCU as a DO driver to display the charging status and faults;

[0069] The A / B type leakage detection interface is electrically connected to the AD port of the second MCU, and is used to determine whether the zero-crossing protection mechanism is triggered and whether there is leakage based on the residual current.

[0070] In one possible implementation, the CP-CC control pilot module adopts a power isolation solution and implements switching between the CC control mode and the CP control mode through a relay.

[0071] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A charging control module supporting multiple communication modes, applied to AC charging piles, characterized in that: include: A first MCU with an SD interface, a first RS232 chip electrically connected to the first MCU, a WiFi-Bluetooth module integrating WiFi and Bluetooth, an Ethernet control chip, and a 4G module mini-PCIE interface; A second MCU, and a second RS232 chip, an RS485 chip, and a Bluetooth module electrically connected to the second MCU; The first MCU and the second MCU communicate via asynchronous transceiver transmission.

2. The charging control module according to claim 1, characterized in that: The first RS232 chip includes a first interface, a second interface, a first output port, and a second output port. The first interface is electrically connected to the first communication serial port of the first MCU, and the corresponding first output port serves as a debugging interface for the charging control module; the second interface is electrically connected to the second communication serial port of the first MCU, and the corresponding second output port serves as an interface for connecting to the charging pile display screen; The second RS232 chip includes a third interface, a fourth interface, a third output port and a fourth output port, wherein the third interface is electrically connected to the third communication serial port of the second MCU, and the corresponding third output port serves as the interface of the slave card reader of the charging pile; the fourth interface is connected to the fourth communication serial port of the first MCU, and the corresponding fourth output port serves as the interface of the master card reader of the charging pile.

3. The charging control module according to claim 1, characterized in that: The WiFi-Bluetooth module includes an SDIO interface and a host control interface; The SDIO interface of the WiFi-Bluetooth module is electrically connected to the SD interface of the first MCU to realize WiFi signal communication; The host control interface of the WiFi-Bluetooth module is electrically connected to the asynchronous transceiver transmission serial port of the first MCU for realizing Bluetooth signal communication.

4. The charging control module according to claim 1, characterized in that: The medium-related interface of the Ethernet control chip is also electrically connected to the RJ45 network interface.

5. The charging control module according to claim 1, characterized in that: The mini-pcie interface of the 4G module is electrically connected to the first MCU via a USB bus; The charging control module is electrically connected to the mini-pcie interface of the 4G module through a self-flying SIM card holder with insertion detection.

6. The charging control module according to claim 1, characterized in that: The receiving and transmitting pins of the RS485 chip are electrically connected to the asynchronous receiving and transmitting serial port of the second MCU, and the output port of the RS485 chip serves as the communication interface of the electric meter.

7. The charging control module according to claim 1, characterized in that: The receiving and transmitting pins of the Bluetooth module are electrically connected to the asynchronous receiving and transmitting serial port of the second MCU; The Bluetooth module is also equipped with a Bluetooth burning port, which is electrically connected to the debugging transceiver pin of the Bluetooth module and is used for Bluetooth connection and parameter setting.

8. The charging control module according to claim 1, characterized in that: The second MCU is also electrically connected to the CP-CC control guidance module, the emergency stop feedback interface, the status display drive interface block and the A / B type leakage detection interface.

9. The charging control module according to claim 8, characterized in that: The CP-CC control pilot module adopts a power isolation solution and implements switching between CC control mode and CP control mode through a relay.

10. The charging control module according to claim 8, characterized in that: The emergency stop feedback interface uses the emergency stop switch of the second MCU as DI feedback for power failure detection and power failure retention; The status display drive interface uses the IO pin of the second MCU as a DO driver to display the charging status and faults; The A / B type leakage detection interface is electrically connected to the AD port of the second MCU, and is used to determine whether the zero-crossing protection mechanism is triggered and whether there is leakage according to the residual current.

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