Electric vehicle charging preprocessing method and charging pile

Abstract

This invention provides a pre-processing method and charging pile for electric vehicles, belonging to the field of electric vehicle technology. The method includes: establishing a network connection between the charging pile and the vehicle when a vehicle is detected to be connected to the charging pile; after the vehicle's identity is authenticated via the network, negotiating with the vehicle using VAS to construct an encrypted channel for the network protocol between the OCPP backend and the vehicle; forwarding pre-processing capability parameters from the vehicle to the OCPP backend based on the encrypted channel; generating pre-processing instructions from the OCPP backend; obtaining the pre-processing instructions sent by the OCPP backend, forwarding the pre-processing instructions to the vehicle, controlling the vehicle to perform pre-processing operations, and controlling the power grid to supply power to the target device of the vehicle; the target device is the device used by the vehicle to perform the pre-processing operations. This invention can solve the technical problem that pre-processing operations cannot be performed when the vehicle is charging, resulting in reduced vehicle operating range and waste of off-peak electricity resources at night.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, specifically to a pre-treatment method for electric vehicle charging and a charging pile. Background Technology

[0002] Currently, the vehicle-side charging controller (EVCC) and the charging pile-side charging controller (SECC) on the market use the ISO15118 charging protocol. With this protocol, it is impossible to monitor the vehicle status in real time from the charging pile or the background when the vehicle is undergoing normal charging interaction, and it is also impossible to remotely control the vehicle to perform pre-processing operations (such as turning on the air conditioning and ventilation system in advance) during charging.

[0003] Because the existing ISO 15118 charging protocol does not support remote control of the vehicle for pre-processing operations during charging (such as turning on the air conditioning or ventilation system during charging, directly consuming the power grid and avoiding battery power loss), it is often necessary to manually get into the vehicle and turn on the air conditioning or ventilation system after charging is completed. This will consume the power of the vehicle's power battery, resulting in a reduction in the vehicle's working range, which is not conducive to the daily operation of the vehicle; at the same time, it will also waste off-peak electricity resources at night.

[0004] Therefore, existing electric vehicle charging solutions cannot perform pre-processing operations during vehicle charging, which leads to a reduction in vehicle operating range and wastes off-peak electricity resources at night. Summary of the Invention

[0005] In view of this, it is necessary to provide a pre-processing method for electric vehicle charging and a charging pile to solve the technical problem that the inability to perform pre-processing operations during vehicle charging leads to a reduction in vehicle operating range and waste of off-peak electricity resources at night.

[0006] To address the aforementioned problems, in a first aspect, the present invention provides a pre-treatment method for electric vehicle charging, applied to charging piles, the method comprising: When a vehicle is detected to be connected to a charging station, a network connection is established between the charging station and the vehicle. After the vehicle's identity is successfully authenticated via the network, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle. Based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan. Based on the encrypted channel, the preprocessing instructions sent by the OCPP backend are obtained and forwarded to the vehicle to control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the target device of the vehicle; the target device is the device used by the vehicle to perform preprocessing operations.

[0007] In one possible implementation, upon detecting that a vehicle is connected to a charging station, establishing a network connection between the charging station and the vehicle includes: When a vehicle is detected to be connected to a charging station, link layer negotiation between the charging station and the vehicle is initiated, and link layer binding between the charging station and the vehicle is completed through stateless address autoconfiguration to build an IPv6 network.

[0008] In one possible implementation, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle, including: Return a list of supported VASs to the vehicle; the list of VASs contains multiple VDV261 preprocessed VAS options; In response to the target VDV261 preprocessing VAS option returned by the vehicle, a V2ICP session is established with the vehicle, and the channel parameters of the network protocol are encrypted in the V2ICP session; After encrypting the channel parameters of the network protocol, the TLS two-way authentication request of the vehicle is forwarded to the OCPP backend, and the TLS two-way authentication request of the OCPP backend is forwarded to the vehicle, so as to establish an encrypted channel of the network protocol between the OCPP backend and the vehicle.

[0009] In one possible implementation, the network protocol is either HTTP or HTTPS.

[0010] In one possible implementation, the electric vehicle charging preprocessing method further includes: After the vehicle completes the preprocessing operation, the V2ICP session between the charging pile and the vehicle is closed, the network channel is shut down, and network resources are released.

[0011] In one possible implementation, the electric vehicle charging preprocessing method further includes: The system acquires the preprocessing status data reported by the vehicle when executing the preprocessing instruction, and forwards the preprocessing status data to the OCPP backend based on the encrypted channel. The system receives the preprocessing parameter adjustment instruction returned by the OCPP backend in response to the preprocessing status data, and forwards the preprocessing parameter adjustment instruction to the vehicle to adjust the parameters of the vehicle performing the preprocessing operation based on the preprocessing parameter adjustment instruction.

[0012] In one possible implementation, the electric vehicle charging preprocessing method further includes: When the time for the vehicle to perform the preprocessing operation reaches a preset end time, or when a vehicle preprocessing termination request is received, the control grid stops supplying power to the target equipment of the vehicle.

[0013] In one possible implementation, the electric vehicle charging preprocessing method further includes: An alarm is triggered if an abnormality is detected in the power grid load or the vehicle's charging status.

[0014] In one possible implementation, the electric vehicle charging preprocessing method further includes: After the vehicle completes the preprocessing operation, a preprocessing report is generated based on the data of the vehicle during the preprocessing operation, and the preprocessing report is forwarded to the OCPP backend through the encrypted channel.

[0015] Secondly, the present invention also provides a charging pile, including a memory and a processor, wherein, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the electric vehicle charging preprocessing method as described in any of the preceding claims.

[0016] The beneficial effects of the above implementation are as follows: The electric vehicle charging preprocessing method and charging pile provided by the present invention establish a network connection between the charging pile and the vehicle when a vehicle is detected to be connected to the charging pile; after the vehicle's identity is authenticated through the network, VAS negotiation is performed with the vehicle to construct an encrypted channel for the network protocol between the OCPP backend and the vehicle; based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan; based on the encrypted channel, the preprocessing instructions sent by the OCPP backend are obtained, and the preprocessing instructions are forwarded to the vehicle to control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the vehicle's target equipment.

[0017] This invention employs VAS negotiation between the charging pile and the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle. This enables data interaction between the backend, the charging pile, and the vehicle. The charging pile can then forward preprocessing instructions from the backend to the vehicle to control preprocessing operations. While the charging pile is charging the vehicle, the vehicle's preprocessing operations are simultaneously performed. During these operations, the electrical energy consumed by the vehicle's electronic devices is supplied by the power grid, not the battery, thus preventing a reduction in vehicle range. Charging at night allows full utilization of off-peak electricity, avoiding waste of nighttime off-peak resources. Therefore, this invention solves the technical problem of reduced vehicle range and waste of nighttime off-peak electricity resources due to the inability to perform preprocessing operations while charging. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A flowchart of an embodiment of the electric vehicle charging pretreatment method provided by the present invention; Figure 2 A schematic diagram of the VAS system configuration corresponding to the electric vehicle charging preprocessing method provided by the present invention; Figure 3 A schematic diagram of an embodiment of the electronic device provided by the present invention. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] In the description of the embodiments of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In this embodiment of the invention, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, apparatus, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules that are explicitly listed, but may include other steps or modules that are not explicitly listed or that are inherent to such process, method, product or device.

[0023] The naming or numbering of steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical order indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effect can be achieved.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] VDV261 is an application layer specification released by the German Public Transport Association (VDV) based on the ISO 15118 Value-Added Services (VAS) framework. Essentially, it is a "protocol-based service standard" for the pre-processing of electric bus charging.

[0026] When the vehicle-mounted charging controller (EVCC) and the charging pile-mounted charging controller (SECC) interact normally according to the ISO 15118 protocol, the EVCC establishes an HTTPS / HTTP connection with the backend (cloud) through the SECC and router at the charging pile, facilitating normal data exchange. Users can view the vehicle status in real time through the backend and issue commands to initiate vehicle pre-processing (such as turning on the air conditioning and ventilation system in advance). These pre-processing operations directly consume electricity from the power grid, avoiding the loss of power in the battery and ensuring that all battery power can be used for operation, improving range and dispatch efficiency; at the same time, it makes full use of off-peak electricity resources at night, avoiding resource waste.

[0027] This invention provides a pretreatment method for electric vehicle charging and a charging pile, which will be described below.

[0028] This invention provides a pre-processing method for electric vehicle charging, applicable to charging piles. It can be implemented by executing an application program stored on the EVSE (Electric Vehicle Power Supply Equipment) controller within the charging pile. Figure 1 As shown, the method includes: S101. When a vehicle is detected to be connected to a charging pile, a network connection is established between the charging pile and the vehicle.

[0029] Understandably, the system determines whether a vehicle is connected to a charging station by detecting whether the CP line (control guide line) between the vehicle and the charging station is electrically connected.

[0030] When a vehicle is detected to be connected to a charging station, the charging station and the vehicle negotiate at the link layer and complete the link layer binding, thereby establishing an IPv6 network.

[0031] S102. After the vehicle's identity is successfully authenticated via the network, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle.

[0032] Understandably, in the ISO 15118 electric vehicle charging protocol and SD-WAN network architecture, VAS (Value Added Service) negotiation refers to the process by which devices (such as electric vehicles) and service providers (such as charging piles and network equipment) select and enable additional functions through a standardized procedure.

[0033] The charging station and the vehicle undergo two-way certification with ISO15118-2 / -20 X.509 certificate to complete plug-and-charge (PNC) authorization and confirm charging rights.

[0034] The OCPP backend can be a cloud-based VAS server, which is a server for value-added services (VAS).

[0035] S103. Based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan.

[0036] As is understandable, preprocessing capability parameters refer to the range of parameters allowed for a vehicle's equipment to perform certain preprocessing operations, such as the temperature range supported by the air conditioning and the maximum allowable energy consumption of the equipment. These preprocessing capability parameters are inherent attributes of the vehicle and can be pre-stored in the vehicle's electronic control system, retrieved when needed.

[0037] S104. Based on the encrypted channel, obtain the preprocessing instruction sent by the OCPP backend, forward the preprocessing instruction to the vehicle, control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the vehicle's target device; the target device is the device used by the vehicle to perform the preprocessing operations.

[0038] It is understood that the solution provided by this invention can be based on Figure 2The system shown is used to achieve this. This invention can forward preprocessing instructions from the backend to the vehicle through the charging pile to control the vehicle to perform preprocessing operations. When the vehicle is performing preprocessing operations, the power consumed by the corresponding electronic devices is provided by the power grid, not by the power battery, thus avoiding a reduction in the vehicle's working range. When charging at night, off-peak electricity can be fully utilized, avoiding the waste of off-peak electricity resources at night.

[0039] In some embodiments, upon detecting that a vehicle is connected to a charging station, establishing a network connection between the charging station and the vehicle includes: When a vehicle is detected to be connected to a charging station, link layer negotiation between the charging station and the vehicle is initiated, and link layer binding between the charging station and the vehicle is completed through stateless address autoconfiguration to build an IPv6 network.

[0040] Understandably, when a vehicle is connected to a charging station, the CP line (control guide line) completes the electrical connection, the charging station detects the vehicle and initiates ISO15118 link layer negotiation (HomePlugGreenPHYPLC or Ethernet).

[0041] The pile-vehicle connection is established through SLAC (Signal Level Attenuation Characterisation) to complete the link layer binding and establish an IPv6 network (DHCPv6 / SLAC address allocation) to prepare for upper-layer communication.

[0042] The connection status is reported to the OCPP backend by the pile side, and the vehicle access event is synchronized.

[0043] In some embodiments, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle, including: Return a list of supported VASs to the vehicle; the list of VASs contains multiple VDV261 preprocessed VAS options; In response to the target VDV261 preprocessing VAS option returned by the vehicle, a V2ICP session is established with the vehicle, and the channel parameters of the network protocol are encrypted in the V2ICP session; After encrypting the channel parameters of the network protocol, the TLS two-way authentication request of the vehicle is forwarded to the OCPP backend, and the TLS two-way authentication request of the OCPP backend is forwarded to the vehicle, so as to establish an encrypted channel of the network protocol between the OCPP backend and the vehicle.

[0044] The network protocol is either HTTP (Hypertext Transfer Protocol) or HTTPS (Hypertext Transfer Protocol Secure).

[0045] Understandably, when the vehicle selects VDV261VAS, the pile side responds and establishes a V2ICP session, negotiating encrypted HTTP(S) channel parameters through the "Internet Access" service.

[0046] (The pile acts as a proxy, forwarding the TLS two-way authentication request between the vehicle and the backend, and establishing an end-to-end encrypted channel (enforcing TLS1.2+).

[0047] In some embodiments, the electric vehicle charging pretreatment method further includes: After the vehicle completes the preprocessing operation, the V2ICP session between the charging pile and the vehicle is closed, the network channel is shut down, and network resources are released.

[0048] Understandably, after the vehicle completes the preprocessing operation, the charging station-vehicle connection terminates the VAS session, closes the HTTP(S) channel, and completes the charging settlement and log archiving.

[0049] The V2ICP and HTTP(S) connections are disconnected at the pile side to release network resources and update the vehicle status to "Ready / Disconnected".

[0050] In some embodiments, the electric vehicle charging pretreatment method further includes: The system acquires the preprocessing status data reported by the vehicle when executing the preprocessing instruction, and forwards the preprocessing status data to the OCPP backend based on the encrypted channel. The system receives the preprocessing parameter adjustment instruction returned by the OCPP backend in response to the preprocessing status data, and forwards the preprocessing parameter adjustment instruction to the vehicle to adjust the parameters of the vehicle performing the preprocessing operation based on the preprocessing parameter adjustment instruction.

[0051] Understandably, vehicles report their pre-processing status (such as current temperature, energy consumption, and remaining time) to the pile side in real time, and the pile side forwards the information to the backend, supporting dynamic adjustment of pre-processing operation parameters.

[0052] In some embodiments, the electric vehicle charging pretreatment method further includes: When the time for the vehicle to perform the preprocessing operation reaches a preset end time, or when a vehicle preprocessing termination request is received, the control grid stops supplying power to the target equipment of the vehicle.

[0053] It is understandable that when the vehicle performs the pre-processing operation, the pre-processing power supply on the pile side will be stopped when the preset end time is reached or the vehicle requests termination. If needed, charging can be maintained until the target SOC (State of Charge).

[0054] In some embodiments, the electric vehicle charging pretreatment method further includes: An alarm is triggered if an abnormality is detected in the power grid load or the vehicle's charging status.

[0055] Understandably, the charging pile monitors the grid load and charging status, triggering alarms and suspending preprocessing when abnormalities occur, prioritizing charging safety.

[0056] In some embodiments, the electric vehicle charging pretreatment method further includes: After the vehicle completes the preprocessing operation, a preprocessing report is generated based on the data of the vehicle during the preprocessing operation, and the preprocessing report is forwarded to the OCPP backend through the encrypted channel.

[0057] Understandably, the vehicle sends a pre-processing completion report to the pile side, which includes energy consumption, temperature, fault codes, etc. The pile side then summarizes and uploads the report to the VDV261 and OCPP backend.

[0058] In summary, the VDV261 used in this invention is based on the ISO 15118 VAS framework and achieves data interaction with a dedicated V2ICP (vehicle-to-pile communication protocol) through the "Internet Access" service. The process is as follows: 1. Identity Authentication: The vehicle and charging station complete PNC (plug and charge) through ISO 15118 EVCC-EVSE two-way certificate, without the need for manual operation.

[0059] 2. VAS Negotiation: The charging station provides the vehicle with the VDV261VAS option. After the vehicle selects it, an encrypted HTTP(S) channel is established to exchange preprocessing parameters (such as temperature, time, and priority) via V2ICP.

[0060] 3. Backend Integration: The charging pile synchronizes the vehicle status and pre-processing requirements to the VDV261 backend (such as DMS), the dispatch system issues instructions, the vehicle executes them and provides feedback on the results.

[0061] 4. Pre-processing execution: While charging, the power grid directly supplies power to the vehicle's air conditioning / ventilation system, and the power battery is only used for driving needs.

[0062] 5. End and Recording: After charging / preprocessing is completed, the charging pile and vehicle terminate the VAS session, and the log is uploaded to the backend for archiving.

[0063] The existing ISO 15118 charging protocol does not support remote vehicle control for pre-processing operations during charging (such as turning on the air conditioning or ventilation system during charging, which directly consumes the grid's power and avoids battery power loss). Often, it is necessary to manually get into the vehicle after charging to turn on the air conditioning or ventilation system, which consumes battery power, reduces the vehicle's operating range, and is not conducive to daily vehicle operation; it also wastes off-peak electricity resources at night.

[0064] This invention adds a charging pre-processing function based on the VDV261 standard. Users can view the vehicle status in real time through the backend and also issue commands to initiate vehicle pre-processing (such as turning on the air conditioning and ventilation system in advance). These pre-processing operations directly consume electricity from the power grid, avoiding battery power loss and ensuring that all battery power can be used for operation, improving range and dispatch efficiency. At the same time, it makes full use of off-peak electricity resources at night, avoiding resource waste.

[0065] In some embodiments, the solution provided by the present invention includes the following steps: 1. Physical connection and link initialization (triggered by EVSE side) (1) When the vehicle is connected to the charging pile, the CP line (control guide line) completes the electrical connection. The pile side detects the vehicle and starts ISO15118 link layer negotiation (HomePlugGreenPHYPLC or Ethernet).

[0066] (2) The pile-vehicle connection is completed through SLAC (Signal Level Attenuation Characterisation) to establish an IPv6 network (DHCPv6 / SLAC address allocation) and prepare for upper-layer communication.

[0067] (3) The pile side reports the connection status to the OCPP backend and synchronizes the vehicle access event.

[0068] 2. ISO15118 PNC Identity Authentication (EVCC-EVSE Bidirectional) (1) The charging pile and the vehicle are certified by ISO15118-2 / -20 X.509 certificate to complete plug-and-charge (PNC) authorization and confirm charging authority.

[0069] (2) The pile-side EVSE returns a list of supported VASs to the vehicle EVCC, which includes the VDV261 preprocessed VAS option.

[0070] (3) After the certification is passed, the charging pile-vehicle enters the charging ready state and waits for VAS negotiation and charging parameter configuration.

[0071] 3. VDV261VAS Negotiation and Channel Establishment (Initiated by EVCC) (1) The vehicle selects VDV261VAS, the pile side responds and establishes a V2ICP session, and negotiates encrypted HTTP(S) channel parameters through the "Internet Access" service.

[0072] (2) The pile side acts as a proxy to forward the TLS two-way authentication request between the vehicle and the backend and establish an end-to-end encrypted channel (forced TLS1.2+).

[0073] (3) The vehicle submits preprocessing capability parameters (such as supported temperature range and maximum energy consumption) to the pile side, and the pile side synchronizes them to the back end of VDV261.

[0074] 4. Backend command issuance and parameter synchronization (initiated by DMS / CSMS) (1) The backend (DMS / CSMS) issues preprocessing instructions to the vehicles according to the scheduling plan: target temperature, start / end time, priority, energy consumption limit, trigger time, etc.

[0075] (2) The instruction is forwarded to the vehicle through the pile-side agent. The vehicle confirms the parameters and returns an accept / reject response. The pile-side agent records the session status.

[0076] (3) The pile side synchronizes the instructions and vehicle confirmation results to the OCPP backend to complete cross-system data alignment.

[0077] 5. Charging and preprocessing are performed in parallel (executed on the EVSE side). (1) Charging is started on the pile side, and the vehicle air conditioning / ventilation system is powered directly through the power grid. The power battery is only used for driving and does not participate in the pre-processing of energy consumption.

[0078] (2) The vehicle reports the preprocessing status (such as current temperature, energy consumption, and remaining time) to the pile side in real time, and the pile side forwards it to the back end, supporting dynamic adjustment of parameters.

[0079] (3) Monitor the grid load and charging status on the pile side. If there is an abnormality, trigger an alarm and suspend preprocessing to ensure charging safety.

[0080] 6. Pre-processing / charging completion and status confirmation (bidirectional trigger) (1) When the preset end time is reached or the vehicle requests termination, the pre-processing power supply on the pile side is stopped, and charging is maintained until the target SOC (if necessary).

[0081] (2) The vehicle sends a pre-processing completion report to the pile side, including energy consumption, temperature, fault codes, etc. The pile side summarizes and uploads it to the VDV261 and OCPP backend.

[0082] (3) The charging pile-vehicle VAS session is terminated, the HTTP(S) channel is closed, and the charging settlement and log archiving are completed.

[0083] 7. Session Termination and Resource Release (Initiated by EVSE) (1) Disconnect the V2ICP and HTTP(S) connections at the pile side, release network resources, and update the vehicle status to "ready / disconnected".

[0084] (2) The backend generates a combined preprocessing and charging report for scheduling review and energy consumption analysis.

[0085] (3) The vehicle disconnects from the link and waits for the next connection.

[0086] The present invention also provides a charging pile, including a memory and a processor, wherein, The memory is used to store programs; The processor, coupled to the memory, is used to execute the program stored in the memory to implement the steps of the electric vehicle charging preprocessing method as described in any of the preceding claims.

[0087] The electric vehicle charging pretreatment device provided in the above embodiments can realize the technical solutions described in the above electric vehicle charging pretreatment method embodiments. The specific implementation principles of each module or unit can be found in the corresponding content in the above electric vehicle charging pretreatment method embodiments, and will not be repeated here.

[0088] like Figure 3 As shown, the present invention also provides an electronic device 300, which can be a charging station. The electronic device 300 includes a processor 301, a memory 302, and a display 303. Figure 3 Only some components of the electronic device 300 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0089] In some embodiments, memory 302 may be an internal storage unit of electronic device 300, such as a hard disk or memory of electronic device 300. In other embodiments, memory 302 may also be an external storage device of electronic device 300, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on electronic device 300.

[0090] Furthermore, the memory 302 may include both internal storage units of the electronic device 300 and external storage devices. The memory 302 is used to store application software and various types of data installed on the electronic device 300.

[0091] In some embodiments, processor 301 may be a central processing unit (CPU), microprocessor, or other data processing chip, used to run program code stored in memory 302 or process data, such as the electric vehicle charging preprocessing method of the present invention.

[0092] In some embodiments, display 303 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen. Display 303 is used to display information from electronic device 300 and to display a visual user interface. Components 301-303 of electronic device 300 communicate with each other via a system bus.

[0093] In some embodiments of the present invention, when the processor 301 executes the electric vehicle charging preprocessing program in the memory 302, the following steps can be implemented: When a vehicle is detected to be connected to a charging station, a network connection is established between the charging station and the vehicle. After the vehicle's identity is successfully authenticated via the network, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle. Based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan. Based on the encrypted channel, the preprocessing instructions sent by the OCPP backend are obtained and forwarded to the vehicle to control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the target device of the vehicle; the target device is the device used by the vehicle to perform preprocessing operations.

[0094] It should be understood that when the processor 301 executes the electric vehicle charging preprocessing program in the memory 302, in addition to the functions mentioned above, it can also perform other functions, as can be found in the description of the corresponding method embodiments above.

[0095] Furthermore, the embodiments of the present invention do not specifically limit the type of electronic device 300 mentioned. Electronic device 300 can be a mobile phone, tablet computer, personal digital assistant (PDA), wearable device, laptop computer, or other portable electronic device. Exemplary embodiments of portable electronic devices include, but are not limited to, portable electronic devices running iOS, Android, Microsoft, or other operating systems. The aforementioned portable electronic device can also be other portable electronic devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, electronic device 300 may not be a portable electronic device, but rather a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0096] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the electric vehicle charging preprocessing method provided by the methods described above, the method comprising: When a vehicle is detected to be connected to a charging station, a network connection is established between the charging station and the vehicle. After the vehicle's identity is successfully authenticated via the network, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle. Based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan. Based on the encrypted channel, the preprocessing instructions sent by the OCPP backend are obtained and forwarded to the vehicle to control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the target device of the vehicle; the target device is the device used by the vehicle to perform preprocessing operations.

[0097] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0098] The electric vehicle charging pretreatment method and charging pile provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A pretreatment method for charging electric vehicles, characterized in that, Applied to charging piles, the method includes: When a vehicle is detected to be connected to a charging station, a network connection is established between the charging station and the vehicle. After the vehicle's identity is successfully authenticated via the network, VAS negotiation is performed with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle. Based on the encrypted channel, the preprocessing capability parameters from the vehicle are forwarded to the OCPP backend; the OCPP backend is used to generate preprocessing instructions based on the preprocessing capability parameters and the scheduling plan. Based on the encrypted channel, the preprocessing instructions sent by the OCPP backend are obtained and forwarded to the vehicle to control the vehicle to perform preprocessing operations, control the charging pile to charge the vehicle's power battery, and control the power grid to supply power to the target device of the vehicle; the target device is the device used by the vehicle to perform preprocessing operations.

2. The electric vehicle charging pretreatment method according to claim 1, characterized in that, Upon detecting that a vehicle has connected to a charging station, a network connection is established between the charging station and the vehicle, including: When a vehicle is detected to be connected to a charging station, link layer negotiation between the charging station and the vehicle is initiated, and link layer binding between the charging station and the vehicle is completed through stateless address autoconfiguration to build an IPv6 network.

3. The electric vehicle charging pretreatment method according to claim 1, characterized in that, VAS negotiation with the vehicle to establish an encrypted channel for the network protocol between the OCPP backend and the vehicle includes: Return a list of supported VASs to the vehicle; the list of VASs contains multiple VDV261 preprocessed VAS options; In response to the target VDV261 preprocessing VAS option returned by the vehicle, a V2ICP session is established with the vehicle, and the channel parameters of the network protocol are encrypted in the V2ICP session; After encrypting the channel parameters of the network protocol, the TLS two-way authentication request of the vehicle is forwarded to the OCPP backend, and the TLS two-way authentication request of the OCPP backend is forwarded to the vehicle, so as to establish an encrypted channel of the network protocol between the OCPP backend and the vehicle.

4. The electric vehicle charging pretreatment method according to claim 3, characterized in that, The network protocol is either HTTP or HTTPS.

5. The electric vehicle charging pretreatment method according to claim 3, characterized in that, Also includes: After the vehicle completes the preprocessing operation, the V2ICP session between the charging pile and the vehicle is closed, the network channel is shut down, and network resources are released.

6. The electric vehicle charging pretreatment method according to claim 1, characterized in that, Also includes: The system acquires the preprocessing status data reported by the vehicle when executing the preprocessing instruction, and forwards the preprocessing status data to the OCPP backend based on the encrypted channel. The system receives the preprocessing parameter adjustment instruction returned by the OCPP backend in response to the preprocessing status data, and forwards the preprocessing parameter adjustment instruction to the vehicle to adjust the parameters of the vehicle performing the preprocessing operation based on the preprocessing parameter adjustment instruction.

7. The electric vehicle charging pretreatment method according to claim 1, characterized in that, Also includes: When the time for the vehicle to perform the preprocessing operation reaches a preset end time, or when a vehicle preprocessing termination request is received, the control grid stops supplying power to the target equipment of the vehicle.

8. The electric vehicle charging pretreatment method according to claim 1, characterized in that, Also includes: An alarm is triggered if an abnormality is detected in the power grid load or the vehicle's charging status.

9. The electric vehicle charging pretreatment method according to claims 1-8, characterized in that, Also includes: After the vehicle completes the preprocessing operation, a preprocessing report is generated based on the data of the vehicle during the preprocessing operation, and the preprocessing report is forwarded to the OCPP backend through the encrypted channel.

10. A charging pile, characterized in that, Including memory and processor, among which, The memory is used to store programs; The processor, coupled to the memory, is configured to execute the program stored in the memory to implement the steps of the electric vehicle charging preprocessing method as described in any one of claims 1 to 9.

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