New energy vehicle charging interface with identity label

Abstract

The invention belongs to the technical field of new energy vehicle recognition, and particularly relates to a new energy vehicle charging interface with an identity label, an electric vehicle identity recognition control assembly is arranged in the new energy vehicle charging interface, and the electric vehicle identity recognition control assembly comprises an identity recognition chip, an MCU module, a communication module and a contactor; the identity recognition chip is arranged in the charging interface, and vehicle identity recognition information is stored in the chip; the communication module is used for realizing communication with the new energy electric vehicle; and the contactor is connected with the MCU module and is used for controlling the on-off of the charging circuit. The new energy vehicle charging interface with the identity label is used for authenticating and authenticating a new energy vehicle and an electric meter, a charging device and the like in a charging system so as to ensure that the new energy vehicle can be smoothly connected with the charging system, and meanwhile, the new energy charging system and corresponding supporting facilities are assisted to complete identity information collection; through functions of data communication and on-off of a charging circuit, smooth charging of the new energy automobile is guaranteed, and the use experience of the new energy automobile is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of new energy vehicle identification, and in particular relates to a new energy vehicle charging interface with an identity mark. Background Art

[0002] The current new energy vehicle charging interface does not have an identity recognition function and lacks the function to ensure that the new energy vehicle can be smoothly connected to the charging system. This is not conducive to ensuring the smooth charging of new energy vehicles and reduces the user experience of new energy vehicles. Summary of the invention

[0003] The purpose of the present invention is to provide a new energy vehicle charging interface with an identity identifier, which is applied to the charging process of a new energy vehicle and is used to realize identity authentication between the new energy vehicle and the charging system, based on actual needs.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A new energy vehicle charging interface with an identity identifier is provided with an electric vehicle identity identification control component, the electric vehicle identity identification control component includes an identity identification chip, an MCU module, a communication module, and a contactor;

[0006] The identification chip is arranged in the charging port, and the vehicle identification information is stored in the chip;

[0007] The communication module is used to realize communication with the new energy electric vehicle;

[0008] The contactor is connected to the MCU module to control the on and off of the charging circuit.

[0009] Further improvement or specific implementation method of the aforementioned new energy vehicle charging interface with identity identification, wherein the vehicle identity identification information is the information for two-way authentication between the electric vehicle and the smart charging pile meter or charging pile, which refers to one or more of the VIN code, license plate, electronic license plate, and vehicle Bluetooth MAC.

[0010] Further improvement or specific implementation of the aforementioned new energy vehicle charging interface with identity identification, wherein the MCU module refers to MSPM0L1304.

[0011] Further improvement or specific implementation of the aforementioned new energy vehicle charging interface with identity identification, wherein the identity identification chip refers to the ATSHA204A encryption chip, the identity identification chip encrypts the VIN code and completes communication through I2C to prevent the VIN information from being tampered with.

[0012] A further improvement or specific implementation of the aforementioned new energy vehicle charging interface with identity identification, wherein the communication module integrates multiple communication methods such as RS232, CNN bus, carrier, WIFI, Bluetooth and RFID electronic tag to improve the adaptability of the identity recognition unit.

[0013] A further improvement or specific implementation of the aforementioned new energy vehicle charging interface with identity identification, wherein an RFID electronic tag is used to achieve non-contact rapid information exchange and storage; the RFID electronic tag stores the VIN code of the electric vehicle.

[0014] A further improvement or specific implementation of the aforementioned new energy vehicle charging interface with identity identification, wherein the vehicle identity identification VIN code integrated in the charging interface serves as the only legal identification for identity authentication during the two-way authentication process between the electric vehicle and the charging pile. If the electric vehicle authentication fails, the charging process is terminated.

[0015] Its beneficial effects are:

[0016] The new energy vehicle charging interface with identity identification of the present invention is used to realize authentication and authorization of the new energy vehicle and the electric meter, charging device, etc. in the charging system to ensure that the new energy vehicle can be smoothly connected to the charging system, and at the same time assist the new energy charging system and corresponding supporting facilities to complete identity information collection, data communication, charging circuit on and off and other functions, to ensure the smooth charging of the new energy vehicle and improve the user experience of the new energy vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a functional structure diagram of the charging interface of new energy vehicles. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1 As shown, it is a functional structure diagram of a new energy vehicle charging interface with identity identification of the present invention, which is provided with an electric vehicle identity identification control component, and the electric vehicle identity identification control component includes an identity identification chip, an MCU module, a communication module, and a contactor;

[0020] The identification chip is arranged in the charging port, and the vehicle identification information is stored in the chip;

[0021] The vehicle identification information is the information for two-way authentication between the electric vehicle and the smart charging pile meter or charging pile, which refers to one or more of the VIN code, license plate, electronic license plate, and car Bluetooth MAC.

[0022] Adding identity recognition to the electric vehicle charging port and then adding vehicle identity verification after the charging handshake to ensure that only authenticated users can perform charging operations is an effective way to prevent illegal charging.

[0023] The identification chip refers to the ATSHA204A encryption chip. The identification chip encrypts the VIN code and completes communication via I2C.

[0024] ATSHA204A encryption chip is a highly secure and feature-rich encryption IC developed by ATMEL. It uses SHA-256 algorithm for encryption operation. It has a built-in 16*32-byte sIO (EEPROM) to store user data and secret keys. The unique 9-byte serial number is used to distinguish other chips. There is also a 512-bit OTP area to store some fixed information. The chip has two external communication modes, namely single BUS and I2C. This solution uses I2C. The VIN code is encrypted by the encryption chip to prevent unauthorized tampering of the VIN information. VIN is the abbreviation of Vehicle Identification Number in English. The VIN code of a vehicle is the vehicle identification code, which is a set of character codes designated by the manufacturer to identify the vehicle. The VIN code consists of 17 characters, so it is commonly known as the 17-bit code. It contains information such as the manufacturer, year, model, body type and code, engine code and assembly location of the vehicle. The vehicle identification code can be arranged and combined to prevent the same model of car from having the same number within 30 years. The VIN code can be used as the unique identification of the vehicle, that is, the vehicle's ID card. In addition, the license plate and electronic license plate can also be used as the unique identification of electric vehicles.

[0025] The vehicle identification VIN code is integrated into the electric vehicle charging interface as the only legal identification for the two-way authentication between the electric vehicle and the charging pile meter. If the electric vehicle authentication fails, the meter will stop the charging handshake process and the charging process will be terminated. If the smart meter authentication fails, the electric vehicle will stop the charging handshake process and the charging process will be terminated. Two-way authentication effectively prevents the charging of vehicles without identity authentication, and the use of illegal charging piles to charge new energy vehicles.

[0026] The vehicle identification VIN code integrated in the charging interface serves as the only legal identification for identity authentication during the two-way authentication process between the electric vehicle and the charging pile. If the electric vehicle authentication fails, the charging process is terminated.

[0027] The purpose of information interaction is to ensure the establishment of the charging process and the guarantee of charging safety. For example, the charging pile handshake message (CHM) and the vehicle handshake message (BHM) are the key to establishing a communication connection between the two parties. Through these two messages, the vehicle and the charging pile can confirm each other's identity and status, laying the foundation for the subsequent charging process; during the charging process, the vehicle needs to send a battery parameter message (BCP) to the charging pile so that the charging pile can understand the current status and needs of the battery; the charging pile will also send a maximum output capacity message (CML) to the vehicle to ensure that the charging process does not exceed the battery's tolerance range. It can be seen that the battery management system (BMS) represents the electric vehicle as the main body of communication, and the purpose of information transmission and authentication is only to ensure the safety and reliability of the charging process.

[0028] The communication module is used to realize communication with the new energy electric vehicle; the communication module integrates multiple communication modes such as RS232, CNN bus, carrier, WIFI, Bluetooth and RFID electronic tag to improve the adaptability of the identity recognition unit.

[0029] Among them, RFID electronic tags are used to achieve non-contact rapid information exchange and storage; the RFID electronic tags store the VIN code of the electric vehicle. RFID wireless radio frequency identification technology uses radio waves to achieve non-contact rapid information exchange and storage technology. In the identification system, the reading, writing and communication of electronic tags are realized through electromagnetic waves. The VIN code of the electric vehicle is stored in the electronic tag, and the electric meter obtains the VIN code of the electric vehicle through the RFID reader-writer non-contact. The vehicle VIN is used as the vehicle's identity certificate. The authentication process is automatic and does not require human intervention. It is safe, reliable, convenient and fast. Intelligent identification technology improves the safety of charging facilities and eliminates unauthorized private charging.

[0030] The contactor is connected to the MCU module to control the on and off of the charging circuit. The MCU module refers to the MSPM0L1304. MSPM0 is TI's automotive-grade MCU based on the Arm 32-bit Cortex-M0+ core. It has 512kB of Flash, 128kB of SRAM, 80MHz main frequency, rich peripheral resources: ADC, DAC, Timer, op amp, comparator, and rich communication interfaces: UART (LIN), I2C (FM+), SPI, and I2S, CAN-FD, USB 2.0FS, LCD, Secure boot, AES256, TRNG, etc., which can meet different usage scenarios.

[0031] In specific implementation, the electric meter and the electric vehicle are connected through conductive lines, such as CAN bus, CP signal, power carrier, etc.; they can also be connected through wireless channels, such as Bluetooth, WIFI, RFID, 4G, etc., to achieve intelligent matching and identity recognition between the electric meter and the electric vehicle.

[0032] The basic working process is as follows: the main communication device is installed on the charging pile meter, and the slave communication device is installed on the charging interface of the electric vehicle and connected to the battery management system. When the charging gun is inserted into the charging interface of the electric vehicle and turned on, the slave wireless communication module is activated and automatically searches for the main wireless communication module. When the main wireless communication module successfully connects and communicates with the slave wireless communication module, the charging pile meter actively reads the identity information on the electric vehicle device and uploads it to the cloud service platform for matching and identity authentication. When the matching and authentication are successful, the meter controller controls the meter's opening and closing device to close the switch, supply power to the charging pile, and start the charging process. When charging is completed, charging stops automatically and the switch is opened. The relevant information on the main communication device and the slave communication device is updated synchronously. The meter records and uploads the charging data to the cloud platform to complete the collection of taxes and fees.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A new energy vehicle charging interface with identity identification, characterized in that: An electric vehicle identification control component is provided inside, and the electric vehicle identification control component includes an identification chip, an MCU module, a communication module, and a contactor; The identification chip is arranged in the charging port, and the vehicle identification information is stored in the chip; The communication module is used to realize communication with the new energy electric vehicle; The contactor is connected to the MCU module to control the on and off of the charging circuit.

2. The new energy vehicle charging interface with identity identification according to claim 1, characterized in that: Vehicle identification information is the information for two-way authentication between electric vehicles and smart charging pile meters or charging piles, and refers to one or more of the VIN code, license plate, electronic license plate, and vehicle Bluetooth MAC.

3. The new energy vehicle charging interface with identity identification according to claim 1, characterized in that: The MCU module refers to MSPM0L1304.

4. The new energy vehicle charging interface with identity identification according to claim 2, characterized in that: The identification chip refers to the ATSHA204A encryption chip. The identification chip encrypts the VIN code and completes communication through I2C to prevent the VIN information from being tampered with.

5. The new energy vehicle charging interface with identity identification according to claim 1, characterized in that: The communication module integrates multiple communication modes such as RS232, CNN bus, carrier, WIFI, Bluetooth and RFID electronic tags to improve the adaptability of the identity recognition unit.

6. The new energy vehicle charging interface with identity identification according to claim 5, characterized in that: RFID electronic tags are used to achieve contactless rapid information exchange and storage; the RFID electronic tags store the VIN code of the electric vehicle.

7. The new energy vehicle charging interface with identity identification according to claim 1, characterized in that: The vehicle identification VIN code integrated in the charging interface serves as the only legal identification for identity authentication during the two-way authentication process between the electric vehicle and the charging pile. If the electric vehicle authentication fails, the charging process is terminated.

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