Charging pile core control panel with multi-channel communication capability and control method

Abstract

The invention discloses a charging pile core control panel with multi-channel communication capability and a control method, and relates to the technical field of new energy automobile charging. Comprising the steps that 1, a charging pile core control board with the multi-channel communication capacity is constructed, the charging pile core control board comprises a heterogeneous communication module and a main control chip, the main control chip adopts STM32H743 and is integrated with a DMA direct memory access controller, three-channel data parallel processing is achieved, and the heterogeneous communication module is connected with the main control chip; step 2, multi-channel cooperative control is carried out through a charging pile core control board: step 21, when a vehicle accesses, a handshake signal is sent through a CAN bus, and a protocol identification module is triggered; step 22, the charging pile core control panel activates three channels at the same time, parses vehicle BMS data in parallel, obtains a cloud platform protocol matching library, and receives user charging mode selection; and step 23, fusing multi-channel data by adopting a D-S evidence theory, determining an optimal communication protocol, generating a charging parameter configuration table, and controlling charging according to the charging parameter configuration table.

Description

Technical Field

[0001] The present invention discloses a charging pile core control board and a control method with multi-channel communication capabilities, relating to the technical field of new energy vehicle charging. Background Art

[0002] With the popularity of new energy vehicles, charging piles have increasingly stringent requirements for communication compatibility and real-time data exchange. The existing charging pile core control board has some defects, such as:

[0003] Single-channel communication limitations: Relying on a single CAN bus or serial port to communicate with the vehicle's BMS, it cannot handle concurrent protocol parsing in multi-charging scenarios, such as communication conflicts when GB / T and CHAdeMO protocols coexist. Most charging stations rely on a single communication channel, such as the CAN bus, for data exchange between the vehicle and the charging station. This single-channel design is prone to data congestion, transmission delays, or even interruptions when data transmission volumes are high or the communication environment is complex, making it impossible to guarantee the real-time and stability of data during the charging process.

[0004] Limited remote communication capabilities: The existing control panel's remote communication capabilities are not strong enough for remote management and operation of charging piles. It is unable to efficiently transmit large amounts of charging data, such as charging power, charging time, and device status.

[0005] Inefficient protocol adaptation: Fixed protocol stacks don't support dynamic loading; adding new protocols requires re-flashing the firmware, making it difficult to quickly adapt to new vehicles. The market is flooded with new energy vehicle brands, and their battery management systems (BMS) utilize varying communication protocols, such as GB / T 27930, CHAdeMO, and ISO 15118. Traditional charging pile core control boards often only support one or a few protocols, failing to meet the charging needs of different vehicle models. This results in some vehicles failing to charge properly at certain charging piles, severely impacting the versatility and efficiency of the charging piles.

[0006] Insufficient multi-device collaboration: The lack of efficient communication mechanisms with cloud platforms, user terminals (APPs / mini-programs), and surrounding charging equipment leads to high latency in remote operation and maintenance, such as fault diagnosis response times >10s and poor user interaction experience. In some large charging locations, such as public fast-charging stations and commercial parking lots, charging piles need to communicate with other surrounding equipment (such as parking guidance systems and charging systems). However, existing core control panels lack the ability to effectively communicate and collaborate with multiple devices, making it impossible to achieve intelligent management and efficient operation of charging locations. Summary of the Invention

[0007] In response to the problems of the prior art, the present invention provides a charging pile core control board and control method with multi-channel communication capabilities. Through hardware heterogeneous communication architecture and software protocol plug-in design, it realizes multi-protocol parallel analysis and real-time interaction of multiple devices, solving the problems of low communication efficiency and poor compatibility of existing charging piles.

[0008] The specific scheme proposed by the present invention is:

[0009] The present invention provides a control method for a charging pile core control board with multi-channel communication capability, comprising: step 1: constructing a charging pile core control board with multi-channel communication capability, wherein the charging pile core control board comprises a heterogeneous communication module and a main control chip, wherein the heterogeneous communication module integrates three independent communication channels, wherein the first independent communication channel is a CAN bus, supports direct connection to a vehicle BMS of GB / T 27930 and CHAdeMO protocols, and is equipped with a hardware filtering circuit; the second independent communication channel is a 4GCat.1+Wi-Fi / BLE dual-mode module, supports the MQTT 3.1.1 protocol; and the third independent communication channel includes an RS485 expansion interface, is compatible with the OCPP 1.6-J protocol, and supports charging pile cluster networking.

[0010] The main control chip adopts STM32H743, which integrates DMA direct memory access controller to realize three-channel data parallel processing.

[0011] Step 2: Multi-channel collaborative control through the charging pile core control board:

[0012] Step 21: When the vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module;

[0013] Step 22: The charging pile core control board activates three channels simultaneously, parses vehicle BMS data, obtains the cloud platform protocol matching library, and receives the user's charging mode selection;

[0014] Step 23: Use DS evidence theory to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

[0015] Furthermore, in step 1 of the control method of the charging pile core control board with multi-channel communication capability, three independent communication channels are encrypted, wherein the second independent communication channel is encrypted using TLS 1.3+national encryption SM4 algorithm, and CRC-16 checksum verification is added to the first independent communication channel for encryption.

[0016] Furthermore, in step 1 of the control method of the charging pile core control board with multi-channel communication capability, when a communication failure occurs, fault tolerance is performed, wherein when a channel is interrupted, it automatically switches to a redundant channel. When the first independent communication channel fails, the basic vehicle parameters are temporarily obtained through the dual-mode module BLE in the second independent communication channel, and the fault code is reported through 4G. The response time is ≤50ms, and it supports 7×24 hours of uninterrupted operation.

[0017] Furthermore, in step 2 of the control method of the charging pile core control board with multi-channel communication capability, multi-gun power distribution optimization is performed: in the dual-gun DC pile scenario, cloud load data is obtained in real time through the second independent communication channel, and the BMS power requirements of each gun are collected through the first independent communication channel. The power distribution weight is dynamically adjusted based on the reinforcement learning algorithm to improve equipment utilization.

[0018] The present invention also provides a charging pile core control board with multi-channel communication capability, which includes a heterogeneous communication module and a main control chip. The heterogeneous communication module integrates three independent communication channels. The first independent communication channel is a CAN bus, which supports direct connection to the vehicle BMS of the GB / T 27930 and CHAdeMO protocols and is equipped with a hardware filtering circuit; the second independent communication channel is a 4GCat.1+Wi-Fi / BLE dual-mode module, which supports the MQTT 3.1.1 protocol; the third independent communication channel includes an RS485 expansion interface, which is compatible with the OCPP 1.6-J protocol and supports charging pile cluster networking.

[0019] The main control chip adopts STM32H743, which integrates DMA direct memory access controller to realize three-channel data parallel processing.

[0020] Multi-channel collaborative control through the charging pile core control board:

[0021] When a vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module;

[0022] The charging pile core control board activates three channels simultaneously, analyzing vehicle BMS data, obtaining the cloud platform protocol matching library, and receiving the user's charging mode selection;

[0023] The DS evidence theory is used to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

[0024] Furthermore, the charging pile core control board with multi-channel communication capability encrypts three independent communication channels, wherein the second independent communication channel is encrypted using TLS1.3+national encryption SM4 algorithm, and the first independent communication channel is encrypted with CRC-16 checksum verification.

[0025] Furthermore, the core control board of the charging pile with multi-channel communication capability is fault-tolerant when a communication failure occurs. When a channel is interrupted, it automatically switches to a redundant channel. When the first independent communication channel fails, the basic vehicle parameters are temporarily obtained through the dual-mode module BLE in the second independent communication channel, and the fault code is reported through 4G. The response time is ≤50ms, and it supports 7×24 hours of uninterrupted operation.

[0026] Furthermore, the core control board of a charging pile with multi-channel communication capability optimizes multi-gun power distribution: in a dual-gun DC pile scenario, cloud load data is obtained in real time through the second independent communication channel, and the power requirements of each gun BMS are collected through the first independent communication channel. The power distribution weight is dynamically adjusted based on the reinforcement learning algorithm to improve equipment utilization.

[0027] The benefits of the present invention are:

[0028] The present invention achieves seamless multi-protocol compatibility: supports parallel parsing of ≥3 mainstream protocols, adapts to more than 90% of domestic vehicle models, and shortens the protocol expansion cycle from 72 hours to 2 hours;

[0029] Improve real-time communication efficiency: Three channels work independently, with a data processing throughput of 2MB / s, and the multi-charger parameter negotiation time is shortened from 5s to 1.2s;

[0030] Achieve intelligent operation and maintenance upgrades: OTA differential upgrades are achieved through 4G / Wi-Fi (firmware package size is reduced by 70%), remote fault diagnosis accuracy is ≥ 99%, and operation and maintenance costs are reduced by 80%. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the connection between the main control chip and other modules in the core control board of the charging pile of the present invention.

[0032] Figure 2 It is a communication diagram of multiple independent communication channel protocols.

[0033] Figure 3 This is a schematic diagram of the multi-channel collaborative control process of the charging pile core control board.

[0034] Figure 4 This is a diagram of the troubleshooting process.

[0035] Figure 5 This is a diagram of the upgrade process. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0037] Example 1

[0038] The present invention provides a control method for a charging pile core control board with multi-channel communication capability, comprising: step 1: constructing a charging pile core control board with multi-channel communication capability, wherein the charging pile core control board comprises a heterogeneous communication module and a main control chip, wherein the heterogeneous communication module integrates three independent communication channels, wherein the first independent communication channel is a CAN bus, supports direct connection to a vehicle BMS of GB / T 27930 and CHAdeMO protocols, and is equipped with a hardware filtering circuit; the second independent communication channel is a 4GCat.1+Wi-Fi / BLE dual-mode module, supports the MQTT 3.1.1 protocol; and the third independent communication channel includes an RS485 expansion interface, is compatible with the OCPP 1.6-J protocol, and supports charging pile cluster networking.

[0039] The main control chip uses STM32H743, which integrates a DMA direct memory access controller to achieve three-channel parallel data processing.

[0040] The main control circuit utilizes the STM32H743 as its core, with peripherals including a Quectel EC20 4G module, Espressif's ESP32 Wi-Fi / BLE chip, and a TJA1145 CAN transceiver. It supports a wide operating temperature range of -40°C to +85°C. The CAN bus includes integrated 120Ω termination resistors and TVS surge protection. The 4G antenna utilizes an IPEX connector with a gain of ≥3dBi, ensuring signal stability in complex electromagnetic environments.

[0041] Protocol plug-in development: We write protocol parsing libraries based on C language, such as the 15022 frame parsing module for GB / T 27930. These libraries are loaded into the main control board via dynamic link libraries (.so files), support runtime updates, and automatically identify vehicle protocol types using an auto-negotiation algorithm, with an identification time of ≤ 200ms.

[0042] Multi-channel scheduling algorithm: In FreeRTOS, independent message queues are allocated for the three channels. For example, the CAN queue depth is 1024, the 4G queue depth is 512, and the BLE queue depth is 256. Cross-channel synchronization is achieved through semaphores.

[0043] Step 2: Multi-channel collaborative control through the charging pile core control board:

[0044] Step 21: When the vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module;

[0045] Step 22: The charging pile core control board activates three channels simultaneously, parses vehicle BMS data, obtains the cloud platform protocol matching library, and receives the user's charging mode selection;

[0046] Step 23: Use DS evidence theory to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

[0047] In step 2, multi-gun power distribution optimization is performed: In the dual-gun DC charging pile scenario, cloud load data is obtained in real time through the second independent communication channel, and the power requirements of each gun BMS are collected through the first independent communication channel. The power distribution weight is dynamically adjusted based on the reinforcement learning algorithm to improve equipment utilization.

[0048] Example 2

[0049] Based on Example 1, three independent communication channels are encrypted in step 1, wherein the second independent communication channel is encrypted using TLS1.3+national encryption SM4 algorithm with an encryption rate of ≥20Mbps, and a CRC-16 checksum is added to the first independent communication channel for encryption verification.

[0050] When a communication failure occurs, fault tolerance is implemented. When a channel is interrupted, it automatically switches to the redundant channel. When the first independent communication channel fails, the basic vehicle parameters are temporarily obtained through the dual-mode BLE module in the second independent communication channel, and the fault code is reported through 4G. The response time is ≤50ms, supporting 7×24 hours uninterrupted operation, and the MTBF is ≥100,000 hours.

[0051] Example 3

[0052] The present invention also provides a charging pile core control board with multi-channel communication capability, which includes a heterogeneous communication module and a main control chip. The heterogeneous communication module integrates three independent communication channels. The first independent communication channel is a CAN bus, which supports direct connection to the vehicle BMS of the GB / T 27930 and CHAdeMO protocols and is equipped with a hardware filtering circuit; the second independent communication channel is a 4GCat.1+Wi-Fi / BLE dual-mode module, which supports the MQTT 3.1.1 protocol; the third independent communication channel includes an RS485 expansion interface, which is compatible with the OCPP 1.6-J protocol and supports charging pile cluster networking.

[0053] The main control chip adopts STM32H743, which integrates DMA direct memory access controller to realize three-channel data parallel processing.

[0054] Multi-channel collaborative control through the charging pile core control board:

[0055] When a vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module;

[0056] The charging pile core control board activates three channels simultaneously, analyzing vehicle BMS data, obtaining the cloud platform protocol matching library, and receiving the user's charging mode selection;

[0057] The DS evidence theory is used to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

[0058] The information interaction, execution process, etc. between the modules in the core control board of the above-mentioned charging pile are based on the same concept as the embodiment of the method of the present invention. For specific contents, please refer to the description in the embodiment of the method of the present invention and will not be repeated here.

[0059] Similarly, the charging pile core control board of the present invention achieves seamless multi-protocol compatibility: it supports parallel parsing of ≥3 mainstream protocols, adapts to more than 90% of domestic vehicle models, and shortens the protocol expansion cycle from 72 hours to 2 hours;

[0060] Improve real-time communication efficiency: Three channels work independently, with a data processing throughput of 2MB / s, and the multi-charger parameter negotiation time is shortened from 5s to 1.2s;

[0061] Achieve intelligent operation and maintenance upgrades: OTA differential upgrades are achieved through 4G / Wi-Fi (firmware package size is reduced by 70%), remote fault diagnosis accuracy is ≥ 99%, and operation and maintenance costs are reduced by 80%.

[0062] It should be noted that not all steps and modules in the above-mentioned processes and the core control board structures of each charging pile are necessary, and certain steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above embodiments can be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be implemented by certain components in multiple independent devices.

[0063] The above embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A control method for a charging pile core control board with multi-channel communication capability, characterized in that include: Step 1: Build a charging pile core control board with multi-channel communication capabilities. The charging pile core control board includes a heterogeneous communication module and a main control chip. The heterogeneous communication module integrates three independent communication channels. The first independent communication channel is a CAN bus that supports direct connection to the vehicle BMS using the GB / T27930 and CHAdeMO protocols and is equipped with a hardware filtering circuit. The second independent communication channel is a 4G Cat.1+Wi-Fi / BLE dual-mode module that supports MQTT 3.1.1 protocol; the third independent communication channel includes RS485 expansion interface, compatible with OCPP 1.6-J protocol, and supports charging pile cluster networking. The main control chip adopts STM32H743, which integrates DMA direct memory access controller to realize three-channel data parallel processing. Step 2: Multi-channel collaborative control through the charging pile core control board: Step 21: When the vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module; Step 22: The charging pile core control board activates three channels simultaneously, parses vehicle BMS data, obtains the cloud platform protocol matching library, and receives the user's charging mode selection; Step 23: Use DS evidence theory to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

2. A control method for a charging pile core control board with multi-channel communication capability according to claim 1, characterized in that in step 1, three independent communication channels are encrypted, wherein the second independent communication channel is encrypted using TLS1.3+national secret SM4 algorithm, and the first independent communication channel is encrypted with CRC-16 checksum verification.

3. A control method for a charging pile core control board with multi-channel communication capability according to claim 1 or 2, characterized in that In step 1, when a communication failure occurs, fault tolerance is performed. When a channel is interrupted, it automatically switches to the redundant channel. When the first independent communication channel fails, the basic vehicle parameters are temporarily obtained through the dual-mode BLE module in the second independent communication channel, and the fault code is reported through 4G. The response time is ≤50ms, supporting 7×24 hours of uninterrupted operation.

4. The control method of a charging pile core control board with multi-channel communication capability according to claim 1 is characterized in that multi-gun power distribution optimization is performed in step 2: in a dual-gun DC pile scenario, cloud load data is obtained in real time through the second independent communication channel, and the power requirements of each gun BMS are collected through the first independent communication channel. The power distribution weight is dynamically adjusted based on the reinforcement learning algorithm to improve equipment utilization.

5. A charging pile core control board with multi-channel communication capability, characterized by The charging pile core control board includes a heterogeneous communication module and a main control chip. The heterogeneous communication module integrates three independent communication channels. The first independent communication channel is a CAN bus, which supports direct connection to the vehicle BMS of the GB / T 27930 and CHAdeMO protocols and is equipped with a hardware filtering circuit. The second independent communication channel is a 4G Cat.1+Wi-Fi / BLE dual-mode module that supports MQTT 3.1.1 protocol; the third independent communication channel includes RS485 expansion interface, compatible with OCPP 1.6-J protocol, and supports charging pile cluster networking. The main control chip adopts STM32H743, which integrates DMA direct memory access controller to realize three-channel data parallel processing. Multi-channel collaborative control through the charging pile core control board: When a vehicle is connected, a handshake signal is sent via the CAN bus to trigger the protocol identification module; The charging pile core control board activates three channels simultaneously, analyzing vehicle BMS data, obtaining the cloud platform protocol matching library, and receiving the user's charging mode selection; The DS evidence theory is used to fuse multi-channel data, determine the optimal communication protocol, generate a charging parameter configuration table, and control charging according to the charging parameter configuration table.

6. The charging pile core control board with multi-channel communication capability according to claim 5 is characterized by encryption Three independent communication channels, the second independent communication channel is encrypted using TLS1.3+National Secret SM4 algorithm, and the first independent communication channel is encrypted with CRC-16 checksum verification.

7. A charging pile core control board with multi-channel communication capability according to claim 5 or 6, characterized in that When a communication failure occurs, fault tolerance is implemented. When a channel is interrupted, it automatically switches to a redundant channel. When the first independent communication channel fails, the basic vehicle parameters are temporarily obtained through the dual-mode BLE module in the second independent communication channel, and the fault code is reported through 4G. The response time is ≤50ms, supporting 7×24 hours of uninterrupted operation.

8. The charging pile core control board with multi-channel communication capability according to claim 5 is characterized by The core control board of the charging pile optimizes multi-gun power distribution: In the dual-gun DC pile scenario, the second independent communication channel is used to obtain cloud load data in real time, and the first independent communication channel is used to collect the power requirements of each gun BMS. Based on the reinforcement learning algorithm, the power distribution weight is dynamically adjusted to improve equipment utilization.

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