Charging method and charging system based on charging pile

Abstract

The invention provides a charging method and a charging system based on a charging pile, and the charging method comprises the steps: carrying out the verification of a vehicle-mounted charging identity code after responding to a vehicle-mounted connection charging pile, and transmitting a device authentication request to the vehicle-mounted; after the two-way verification is passed, acquiring a vehicle-mounted type and a battery state of a vehicle; automatically adjusting output parameters according to the vehicle-mounted type and the battery state; and charging the vehicle according to the output parameters, and providing charging progress and cost information. Through vehicle-mounted and charging pile two-way verification, data safety and account fund safety in the charging process are guaranteed, output parameters are dynamically adjusted based on vehicle-mounted types and battery states, optimal charging parameters can be matched for vehicle-mounted equipment of different vehicle types and different battery health states, the charging efficiency is improved, and the charging cost is reduced. And vehicle-mounted types can be automatically identified and parameters can be adjusted, so that the charging pile can be compatible with various vehicle types, and the universality and the application range of equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to a charging method and charging system based on a charging pile. Background Technology

[0002] Electric vehicles, as a promising green mode of transportation, have a large market potential. Charging / battery swapping stations, as essential supporting infrastructure for the development of electric vehicles, have significant social and economic benefits. Charging piles function similarly to gas pumps at gas stations; they can be fixed to the ground or walls and installed in public buildings, residential parking lots, or charging stations to charge electric vehicles.

[0003] However, most existing charging stations use fixed output parameters for charging, which results in poor adaptability of charging parameters. Summary of the Invention

[0004] The problem solved by this invention is the poor compatibility of charging parameters in existing charging systems.

[0005] To address the above problems, this invention provides a charging method based on a charging pile, the charging method comprising: In response to the vehicle connecting to the charging pile, the charging identification code of the vehicle is verified and a device authentication request is sent to the vehicle. After successful two-way verification, the vehicle type and battery status are obtained. The output parameters are automatically adjusted based on the vehicle type and the battery status. The vehicle is charged according to the output parameters, and charging progress and cost information are provided.

[0006] Optionally, the vehicle type includes level type, interface type, and maximum power; the battery status includes temperature, maximum allowable current, and remaining current; the automatic adjustment of output parameters based on the vehicle type and the battery status includes: The interface type of the vehicle is identified as one of the following: Chinese standard, European standard, or American standard. Automatically switch communication protocols based on the interface type; The output parameters are automatically adjusted based on the vehicle's voltage level, maximum power, and battery status. The output parameters include charging mode, initial current, and constant current threshold.

[0007] Optionally, the charging method further includes: The vehicle-mounted system automatically freezes account funds based on historical charging data. Once charging is complete, the remaining amount will be automatically deducted from the account balance and unfrozen.

[0008] Optionally, the charging method further includes: Once charging is complete, the cost data is sent to the cloud, and the cloud is controlled to automatically deduct the payment through the user's authorized payment channel.

[0009] Optionally, the charging pile is equipped with a gun removal detection sensor, and the charging method further includes: When the gun-drawing detection sensor detects a gun-drawing action and the settlement is not completed, the vehicle-mounted system will issue a voice prompt and pause the gun-drawing action via an electromagnetic lock.

[0010] This application embodiment also provides a charging system, the charging system comprising: The vehicle-mounted system includes a communication module and a contactless charging module. The communication module is used to send the charging identification code, vehicle type, and battery status to the charging pile. The contactless charging module is used to monitor the charging pile connection signal and parse the charging pile's device authentication request. The charging pile includes a charging module and an authentication module. The authentication module is used to verify the charging identity code of the vehicle and send a device authentication request to the vehicle. The charging module is electrically connected to the vehicle and is used to automatically adjust the output parameters according to the vehicle type and the battery status, and to charge the vehicle.

[0011] Optionally, the charging pile also includes a settlement module, which is used to generate fee data when charging ends and send the fee data to the cloud to complete automatic deduction.

[0012] Optionally, the charging pile also includes a self-testing module, which is used to automatically test the charging module, communication module, and gun head contact at preset intervals. When a fault is detected, the fault is automatically marked as a temporary fault or a hardware fault.

[0013] Optionally, the vehicle-mounted system also includes: The range prediction module is used to predict range information based on a deep learning model, combined with historical driving data and weather data. The dynamic navigation module is used to generate a dynamic charging path based on the range information, road conditions, and the real-time status of the charging station.

[0014] Optionally, the vehicle-mounted system further includes a warning module, which is used to prompt for a replacement charging station when the charging station malfunctions.

[0015] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: The charging method based on charging piles provided in this application has passed bidirectional verification by both the vehicle and the charging pile, ensuring data security and account fund security during the charging process. It dynamically adjusts output parameters based on vehicle type and battery status, matching optimal charging parameters for vehicle devices of different models and battery health states, thereby improving charging efficiency. It can also automatically identify vehicle type and adjust parameters, making the charging pile compatible with multiple vehicle models and improving the versatility and applicability of the equipment. Attached Figure Description

[0016] Figure 1 A schematic flowchart of a charging method based on a charging pile provided in an embodiment of this application; Figure 2 for Figure 1 The flowchart of the charging method shown is a schematic diagram of the output parameters. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] This application provides a charging method and charging system based on a charging pile, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments.

[0019] Please continue reading. Figure 1 , Figure 1 The flowchart illustrates a charging method based on a charging pile provided in this application embodiment. The method specifically includes the following steps: 110. In response to the vehicle connecting to the charging pile, verify the vehicle's charging identity code and send a device authentication request to the vehicle.

[0020] In this case, the vehicle can detect the connection of the charging interface via the CAN bus and activate the charging identification code; or the charging station can confirm the connection of the charging gun head via the GPIO interface or PLC communication.

[0021] In some embodiments, the vehicle transmits the charging identification code to the charging station via TLS 1.3 encryption to prevent man-in-the-middle attacks.

[0022] In some embodiments, when transmitting and storing the VIN code, only the last 6 bits are retained for matching, while the first 11 bits are encrypted to protect user privacy.

[0023] In some embodiments, the charging identification code includes user master account information (e.g., WeChat / Alipay), vehicle VIN code, authorization timestamp, etc.

[0024] Verifying the vehicle's charging identification code can be done through account authorization, verifying the user's authorization status (such as validity period and payment permissions) and vehicle compatibility.

[0025] Understandably, during the verification process, the charging pile will also send the device authentication request to the vehicle to facilitate the vehicle's authentication of the charging pile.

[0026] In some embodiments, the device authentication request includes the charging pile's unique identifier, operator digital certificate, national standard / European standard / American standard protocol version information, device information, charging history evaluation data, historical fault information, etc.

[0027] The unique identifier includes the charging pile's MAC address, serial number (SN), and embedded security chip (SE) ID serial number. The digital certificate includes an X.509 certificate issued by the charging pile manufacturer or operator, containing the public key, validity period, and signature algorithm. Protocol version information includes the charging protocols supported by the charging pile and its dynamic protocol matching capabilities. Device information includes the charging pile's operator ID, area code, and service endpoint.

[0028] 120. After successful two-way verification, obtain the vehicle type and battery status.

[0029] In some embodiments, after successful two-way verification, the charging station uploads the identity code hash value to the cloud for comparison with the blockchain-stored evidence. Additionally, the cloud returns the verification result and synchronously updates the payment token to the charging station.

[0030] Additionally, it's worth noting that when an error occurs during two-way verification or cloud verification, the charging station will send a message to the vehicle's onboard system. The onboard system will then display instructions and a QR code guiding the user through the charging process, which can be manually performed via the user's mobile phone. Furthermore, the vehicle's brand app on the user's phone will also notify them of the current verification error and guide them through configuring relevant vehicle permissions.

[0031] The acquisition of vehicle type and battery status can be achieved by the vehicle control unit or battery management system actively sending pre-stored vehicle type information and real-time monitored battery status data to the charging pile through the communication link of the charging interface after two-way verification is passed; or by the charging pile sending a data acquisition command to the vehicle device after completing two-way verification, and retrieving the corresponding vehicle type information and real-time battery status data from the vehicle based on a preset charging communication protocol to acquire the information.

[0032] 130. Automatically adjust output parameters according to vehicle type and battery status.

[0033] Vehicle-mount type includes level type, interface type, and maximum power; battery status includes temperature, maximum allowable current, and remaining current.

[0034] Please continue reading for more details. Figure 2 , Figure 2 for Figure 1 The flowchart illustrating the charging method shows the output parameters, which automatically adjust the output parameters based on vehicle type and battery status, including the following steps: 131. Identify whether the vehicle's interface type is one of the following: Chinese standard, European standard, or American standard.

[0035] The charging pile uses a built-in interface detection module to identify the number of pins, pin definitions, physical form, and communication handshake signals of the vehicle charging interface from multiple dimensions. This determines whether the vehicle interface type is one of the following: Chinese standard GB / T 27930, European standard CCS, or American standard CHAdeMO. During the identification process, the charging pile sends detection commands according to the exclusive communication protocol of different standard interfaces, and completes the final confirmation through the response signal fed back by the vehicle equipment, ensuring the accuracy of interface type identification.

[0036] Among them, the Chinese national standard is the circular multi-pin interface corresponding to the GB / T series standards; the European standard is the Type 2 basic + DC extension pin interface corresponding to the CCS 2.0 standard; and the American standard is the Type 1 basic + DC extension pin interface corresponding to the CCS 1.0 standard.

[0037] 132. Automatically switch communication protocols based on interface type.

[0038] For example, if the interface is determined to be a Chinese national standard interface, the communication protocol is switched to conform to the GB / T 18487.1 series of standards; if the interface is determined to be a European standard interface, the communication logic is switched to be compatible with the CCS 2.0 protocol; if the interface is determined to be an American standard interface, the interaction rules are switched to be adapted to the CCS 1.0 protocol.

[0039] 133. Automatically adjust output parameters based on the vehicle's voltage level, maximum power, and battery status. Output parameters include charging mode, initial current, and constant current threshold.

[0040] The system automatically adjusts charging output parameters through a built-in multi-dimensional parameter matching algorithm. For example, for high-voltage platform vehicles with batteries at a suitable charging temperature and a remaining charge (SOC) of 20%-80%, the system switches to constant current fast charging mode, setting the initial current to the maximum allowable current threshold of the vehicle, and setting the constant current threshold to 80% SOC. For low-voltage platform vehicles or batteries at low temperature and high charge (SOC > 80%), the system switches to constant voltage trickle charging mode, reducing the initial current to 30%-50% of the rated value, and advancing the constant current threshold to 70% SOC, thereby achieving a balance between charging efficiency and battery safety.

[0041] 140. Charge the vehicle based on the output parameters and provide charging progress and cost information.

[0042] The charging station starts charging and synchronizes the status to the app and in-vehicle system corresponding to the user's vehicle brand.

[0043] In some embodiments, during the charging process, the in-vehicle entertainment system displays information such as charging progress and cost in real time, and the charging pile uploads status data (such as SOC and temperature) to the cloud via CAN bus or Ethernet for users to query.

[0044] In existing charging solutions, there are situations where settlement delays cause users to wait, and the risk of charger jamming is amplified due to network fluctuations. Even in prepayment scenarios, users still need to wait for settlement to be completed, failing to achieve "plug and go". However, the embodiments of this application allow users to choose one of two methods when settling charging: a prepayment mode or a postpayment mode, thus achieving "plug and go" charging settlement.

[0045] The prepayment mode works by automatically freezing the account balance based on historical charging data. Once charging is complete, the remaining balance is automatically deducted from the account balance and unfrozen. Specifically, when a user selects "prepayment," the vehicle automatically freezes the corresponding account balance based on historical charging data (such as average charging volume and cost). After charging is completed and the charging station is unplugged, the actual cost is immediately uploaded to the cloud, and the account balance is automatically deducted and the remaining balance is unfrozen, all without waiting for settlement.

[0046] The postpaid model works as follows: after charging is complete, the cost data is sent to the cloud, and the cloud automatically deducts the payment through the user-authorized payment channel. Specifically, in non-prepayment scenarios, after the charging station detects that the charging gun has been unplugged, it immediately pushes the cost data to the cloud. The cloud then automatically deducts the payment through the user-authorized payment channel and simultaneously sends a settlement completion notification to both the vehicle and the mobile app.

[0047] In some embodiments, a gun removal detection sensor is installed in the charging pile, and the charging method further includes: when the gun removal detection sensor detects a gun removal action and the payment is not completed, controlling the vehicle to provide a voice prompt and pausing the gun removal action through an electromagnetic lock, thereby solving the risk of gun jamming.

[0048] This application also provides a charging system, which includes an on-board unit and a charging pile. The on-board unit includes a communication module and a contactless charging module. The communication module sends the charging identification code, vehicle type, and battery status to the charging pile. The contactless charging module monitors the charging pile connection signal and parses the charging pile's device authentication request. The charging pile includes a charging module and an authentication module. The authentication module verifies the on-board unit's charging identification code and sends a device authentication request to the on-board unit. The charging module is electrically connected to the on-board unit and automatically adjusts output parameters according to the vehicle type and battery status to charge the vehicle. Through bidirectional authentication between the on-board unit and the charging pile, data security and account fund security during the charging process are ensured. Dynamic adjustment of output parameters based on vehicle type and battery status allows for matching optimal charging parameters to on-board devices of different vehicle models and battery health states, improving charging efficiency. Furthermore, automatic identification of the vehicle type and parameter adjustment enables the charging pile to be compatible with multiple vehicle models, enhancing the device's versatility and applicability.

[0049] The charging module supports both fast charging (above 120kW) and slow charging (7kW) modes, and is compatible with Chinese, European, and American standard interfaces. It also features a built-in gun removal detection sensor, which is controlled by an electromagnetic lock.

[0050] The charging station also includes a settlement module, which generates fee data at the end of charging and sends the data to the cloud to complete automatic deduction. The automatic settlement methods are detailed in the prepayment and postpayment models described above, and will not be repeated here.

[0051] The charging station also includes a self-test module, which automatically checks the charging module, communication module, and gun contact at preset intervals. When a fault is detected, it is automatically marked as a temporary fault or a hardware fault. The charging station fault information is shared with the vehicle-to-everything (V2X) network, prompting nearby vehicles to avoid the faulty station. The charging station fault is proactively indicated before plugging in the gun, avoiding unnecessary operations and improving the overall efficiency of the charging network.

[0052] The charging station also includes multiple sensors, such as a current sensor for monitoring the charging status, a network module for monitoring 5G or Wi-Fi, a gun contact sensor for detecting whether the charging gun is inserted, and a temperature sensor for monitoring the temperature of the charging module.

[0053] The charging station also includes a display screen to show key information such as "Idle", "Fault", and "Charging".

[0054] The vehicle also includes: a range prediction module, which predicts range information based on a deep learning model, combined with historical driving data and weather data; and a dynamic navigation module, which generates a dynamic charging route based on range information, road conditions, and the real-time status of charging stations. For example, it first integrates GPS road conditions, weather data, vehicle battery status such as SOC, health, historical power consumption curves, and the real-time status of charging stations, such as idle, faulty, or high power. The range prediction module builds a deep learning model based on TensorFlow / PyTorch, takes current battery level, vehicle speed, road conditions, and weather as input, outputs dynamic range, and predicts range information. The dynamic navigation module plans the nearest available charging station or the optimal charging station route along the way based on the predicted range and the real-time status of charging stations, and guides the user to accurately park at an available charging spot through AR navigation, avoiding situations where no charging station is available.

[0055] The vehicle-mounted system also includes a warning module, which prompts the user to replace the charging station when it malfunctions. For example, when a user attempts to use a faulty charging station, the system will display a pop-up message before the user plugs in, indicating that the charging station is faulty and requesting an alternative charging station, while also recommending nearby available charging stations.

[0056] The in-vehicle components also include a processor, sensors, and a display. The processor can be a Qualcomm 8295 chip or an equivalent automotive chip, supporting 5G communication, AI computing, and blockchain encryption. Sensors can be GPS modules with an accuracy of ≤0.5 meters, a CAN bus interface for communicating with the vehicle's battery system, and a charging gun connection sensor to detect the charging gun's insertion status. The display can be a central control screen and a passenger-side screen, with the central control screen being 15 inches or larger and the passenger-side screen being 12 inches or larger, supporting split-screen display of charging information and navigation.

[0057] The in-vehicle system also includes an ecosystem service module, which can display cross-brand points and charging discount information, and support points redemption. For example, the user's main account is deeply integrated with the in-vehicle system, and charging data is synchronized to the user profile, providing data support for subsequent services such as battery health monitoring and charging discount push notifications. In addition, when users charge at different brands of charging stations, the system automatically accumulates points, which can be redeemed for charging coupons, vehicle maintenance services, etc., forming a cross-brand ecosystem incentive.

[0058] The above provides a detailed description of a charging method and charging system based on a charging pile provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A charging method based on a charging pile, characterized in that, The charging method includes: In response to the vehicle connecting to the charging pile, the charging identification code of the vehicle is verified, and a device authentication request is sent to the vehicle. After successful two-way verification, the vehicle type and battery status are obtained. The output parameters are automatically adjusted based on the vehicle type and the battery status. The vehicle is charged according to the output parameters, and charging progress and cost information are provided.

2. The charging method according to claim 1, characterized in that, The vehicle type includes level type, interface type, and maximum power; the battery status includes temperature, maximum allowable current, and remaining current; the automatic adjustment of output parameters based on the vehicle type and battery status includes: The interface type of the vehicle is identified as one of the following: Chinese standard, European standard, or American standard. Automatically switch communication protocols based on the interface type; The output parameters are automatically adjusted based on the vehicle's voltage level, maximum power, and battery status. The output parameters include charging mode, initial current, and constant current threshold.

3. The charging method according to claim 1, characterized in that, The charging method further includes: The vehicle-mounted system automatically freezes account funds based on historical charging data. Once charging is complete, the remaining amount will be automatically deducted from the account balance and unfrozen.

4. The charging method according to claim 1, characterized in that, The charging method further includes: Once charging is complete, the cost data is sent to the cloud, and the cloud is controlled to automatically deduct the payment through the user's authorized payment channel.

5. The charging method according to claim 1, characterized in that, The charging pile is equipped with a gun removal detection sensor, and the charging method further includes: When the gun-drawing detection sensor detects a gun-drawing action and the settlement is not completed, the vehicle-mounted system will issue a voice prompt and pause the gun-drawing action via an electromagnetic lock.

6. A charging system, characterized in that, The charging system includes: The vehicle-mounted system includes a communication module and a contactless charging module. The communication module is used to send the charging identification code, vehicle type, and battery status to the charging pile. The contactless charging module is used to monitor the charging pile connection signal and parse the charging pile's device authentication request. The charging pile includes a charging module and an authentication module. The authentication module is used to verify the charging identity code of the vehicle and send a device authentication request to the vehicle. The charging module is electrically connected to the vehicle and is used to automatically adjust the output parameters according to the vehicle type and the battery status, and to charge the vehicle.

7. The system according to claim 6, characterized in that, The charging pile also includes a settlement module, which generates fee data when charging ends and sends the fee data to the cloud to complete automatic deduction.

8. The system according to claim 6, characterized in that, The charging pile also includes a self-testing module, which is used to automatically test the charging module, communication module, and gun head contact at preset intervals. When a fault is detected, the fault is automatically marked as a temporary fault or a hardware fault.

9. The system according to claim 6, characterized in that, The vehicle-mounted equipment also includes: The range prediction module is used to predict range information based on a deep learning model, combined with historical driving data and weather data. The dynamic navigation module is used to generate a dynamic charging path based on the range information, road conditions, and the real-time status of the charging station.

10. The system according to claim 6, characterized in that, The vehicle-mounted system also includes a warning module, which is used to prompt for a replacement charging station when the charging station malfunctions.

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