Electric vehicle charging control method and system

Abstract

The invention discloses an electric vehicle charging control method and system, and the method comprises the steps: receiving a code scanning signal of a user mobile terminal, controlling a charging pile to start charging according to the code scanning signal, and locking a charging gun corresponding to the charging pile; when a start physical signal of a stop button of the charging gun is received, an NFC module of the charging pile is awakened, and the NFC module is used for sensing a feedback signal of a user mobile terminal and performing matching; if the feedback signal does not pass matching within the preset time, the charging pile is controlled to automatically stop charging; and if the feedback signal matching is passed within the preset time, controlling a relay of the charging pile to cut off a power supply, and controlling the charging gun to send a gun pulling prompt to a user after unlocking. Charging is started through code scanning of the mobile terminal, the physical stop button is used in combination with NFC authentication, it is ensured that only an authorized user can stop charging, misoperation is effectively prevented while the operation process is simplified, dependence on a network is effectively reduced through the NFC near-field authentication mode, and reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging control, and particularly relates to an electric vehicle charging control method and system. Background Art

[0002] With the rapid development of the new energy vehicle industry, electric vehicle charging has become a daily high-frequency scenario. The current mainstream charging pile's code-scanning charging process is as follows: 1) The user drives into the charging station and parks beside the charging pile; 2) Manually unplug the charging gun and insert it into the vehicle's charging interface; 3) Start charging by scanning the code with the mobile phone; 4) When charging is completed, the user needs to operate on the mobile phone to stop charging; 5) Manually unlock the charging gun and put it back in place. [[ID=2??]]

[0003] It can be seen that the traditional charging pile's code-scanning charging process requires multiple operations on the mobile phone and physical operations during the charging start and charging end processes. The process is cumbersome and will take a lot of time for users. If there is a network anomaly or a charging pile operator service anomaly when the user needs to stop, the user will spend more time and have a bad user experience. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide an electric vehicle charging control method and system to solve the pain points of the complex traditional electric vehicle charging process and strong network dependence.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: An electric vehicle charging control method, including the steps of: S1. Receive the mobile phone code-scanning signal of the user and control the charging pile to start charging; S2. When obtaining that the user presses the physical termination button of the charging gun, wake up the NFC module of the charging pile to sense the user's mobile phone and receive the induction feedback signal; S3. If the induction feedback signal is not received within the preset time, control the charging pile to automatically disconnect the charging, otherwise execute the next step; S4. Control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun-pulling prompt to the user.

[0006] To solve the above technical problem, another technical solution adopted by the present invention is: An electric vehicle charging control system, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: S1. Receive the mobile phone scanning code signal of the user, and control the charging pile to start charging. S2. When the physical stop button of the charging gun pressed by the user is detected, wake up the NFC module of the charging pile to sense the user's mobile phone, and receive the induction feedback signal. S3. If the induction feedback signal is not received within the preset time, control the charging pile to automatically disconnect the charging; otherwise, proceed to the next step. S4. Control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun-drawing prompt to the user.

[0007] The beneficial effects of the present invention are as follows: A method and system for controlling electric vehicle charging are provided. The charging is started by scanning the code with the user's mobile terminal, and at the same time, the physical stop button is combined with the NFC module for NFC authentication to ensure that only authorized users can stop charging. While simplifying the operation process, it effectively prevents misoperations. At the same time, the near-field NFC authentication method also effectively reduces the dependence on the network, improves the reliability of the charging pile system, and automatically stops charging when the corresponding NFC feedback signal is not matched within the preset time to ensure charging safety. When the corresponding NFC feedback signal is matched, the charging power supply is completely cut off through the relay and then the charging gun is unlocked to ensure the real-time and certainty of charging termination. Description of the Drawings

[0008] Figure 1 It is the overall flowchart of a method for controlling electric vehicle charging according to an embodiment of the present invention; Figure 2 It is the specific flowchart of a method for controlling electric vehicle charging according to an embodiment of the present invention; Figure 3 It is the structural schematic diagram of a control system for electric vehicle charging according to an embodiment of the present invention.

[0009] Label Description: 1. A control system for electric vehicle charging; 2. Memory; 3. Processor. Detailed Embodiments

[0010] To illustrate the technical content, the achieved objectives and effects of the present invention in detail, the following is described in conjunction with the embodiments and with reference to the drawings.

[0011] Please refer to Figure 1 and Figure 2 A method for controlling electric vehicle charging includes the steps: S1. Receive the scanning code signal of the user's mobile terminal, control the charging pile to start charging according to the scanning code signal, and lock the charging gun corresponding to the charging pile. S2. When receiving the enabling physical signal of the termination button of the charging gun, wake up the NFC module of the charging pile. The NFC module is used to sense the feedback signal of the user's mobile terminal and perform matching. S3. If the feedback signal fails to pass the matching within the preset time, control the charging pile to stop charging automatically. S4. If the feedback signal passes the matching within the preset time, control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun-drawing prompt to the user.

[0012] As can be seen from the above description, the beneficial effects of the present invention are as follows: The charging is started by scanning the code of the user's mobile terminal. At the same time, the physical termination button is used in combination with the NFC module for NFC authentication to ensure that only authorized users can stop charging. While simplifying the operation process, it effectively prevents misoperations. At the same time, the near-field NFC authentication method also effectively reduces the dependence on the network, improves the reliability of the charging pile system, and automatically stops charging when the corresponding NFC feedback signal is not matched within the preset time to ensure charging safety. When the corresponding NFC feedback signal is matched, the charging power supply is completely cut off through the relay and then the charging gun is unlocked to ensure the real-time and certainty of charging termination.

[0013] Further, after receiving the scanning code signal of the user's mobile terminal in step S1, it further includes: Bind the user's mobile terminal to the charging pile to obtain binding information, where the binding information includes the ID information of the user's mobile terminal. In step S2, when the NFC module senses the feedback signal of the user's mobile terminal and performs matching, specifically: Compare the user mobile terminal ID code carried in the feedback signal sensed by the NFC module with the ID information in the binding information. If the comparison is consistent, the matching passes; otherwise, the matching fails. The time interval from receiving the enabling physical signal of the termination button of the charging gun in step S2 to waking up the NFC module of the charging pile to sense the feedback signal of the user's mobile terminal is less than the first preset threshold.

[0014] As can be seen from the above description, by binding the user terminal ID information, the NFC module quickly compares and authenticates the authentication information to achieve one-to-one matching with high security and reduce the risk of illegal operations. At the same time, the time interval from button triggering to NFC wake-up is extremely short (less than the first preset threshold), ensuring the quick response from pressing the button to waking up the NFC module and ensuring the real-time and certainty of the control signal.

[0015] Further, after the feedback signal passes the matching in step S4, it further includes: S41. Generate a charging end signal and transmit the charging end signal to the main control chip of the charging pile through a preset interrupt signal line, where the preset interrupt signal line is a physical signal line between the signal feedback pin of the NFC module and the signal receiving pin of the main control chip.

[0016] As can be seen from the above description, the wired signal transmission mechanism using the preset interrupt signal line ensures the real-time and certainty of signal transmission, avoids the stability risks brought by the dependence on the wireless network, and improves the reliability of the charging pile system.

[0017] Further, in step S4, controlling the relay of the charging pile to cut off the power supply and controlling the charging gun to unlock and then sending a gun removal prompt to the user specifically includes: S42. After the main control chip receives the charging end signal, control the relay coil of the charging pile to disconnect and detect the coil level signal of the collected relay; S43. If the coil level signal is 0, control the charging gun to unlock and detect the charging gun state in real time; S44. If the charging gun state is the unlocked state, send a gun removal prompt to the user mobile terminal through the NFC module.

[0018] As can be seen from the above description, the main control chip directly controls the relay coil to disconnect and detects the coil level signal to ensure the accuracy and reliability of cutting off the power supply of the charging pile; at the same time, after confirming that the relay coil level signal is 0 (i.e., the disconnected state), the charging gun is unlocked and the charging gun state is detected in real time to ensure the safe unlocking and state monitoring of the charging gun; finally, a gun removal prompt is sent through the NFC module after the charging gun is unlocked to optimize the user experience and ensure that the user removes the gun in time.

[0019] Further, after controlling the charging pile to automatically stop charging in step S3, it further includes: Sending an NFC authentication prompt to the user mobile terminal, and after the NFC module of the charging pile senses the feedback signal of the user mobile terminal, controlling the relay of the charging pile to cut off the power supply and controlling the charging gun to unlock.

[0020] As can be seen from the above description, sending an NFC authentication prompt to the user mobile terminal after automatically stopping charging ensures that authentication can still be performed through user confirmation in special cases (such as NFC module failure), increasing the flexibility and security of the charging pile system.

[0021] Please refer to Figure 3 , an electric vehicle charging control system, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: S1. Receive the scanning code signal of the user's mobile terminal, control the charging pile to start charging according to the scanning code signal, and lock the charging gun corresponding to the charging pile. S2. When receiving the enabling physical signal of the termination button of the charging gun, wake up the NFC module of the charging pile, and the NFC module is used to sense and match the feedback signal of the user's mobile terminal. S3. If the feedback signal fails to pass the matching within the preset time, control the charging pile to automatically stop charging. S4. If the feedback signal passes the matching within the preset time, control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun-drawing prompt to the user.

[0022] As can be seen from the above description, the beneficial effects of the present invention are as follows: Based on the same technical concept, in cooperation with the above-mentioned electric vehicle charging control method, an electric vehicle charging control system is provided. The charging is started by scanning the code with the user's mobile terminal, and at the same time, a physical termination button is used in combination with the NFC module for NFC authentication to ensure that only authorized users can stop charging. While simplifying the operation process, it effectively prevents misoperation. At the same time, the near-field NFC authentication method also effectively reduces the dependence on the network, improves the reliability of the charging pile system, and automatically stops charging when the corresponding NFC feedback signal is not matched within the preset time to ensure charging safety. When the corresponding NFC feedback signal is matched, the charging power supply is completely cut off through the relay and then the charging gun is unlocked to ensure the real-time and certainty of charging termination.

[0023] Further, after receiving the scanning code signal of the user's mobile terminal in step S1, it further includes: Bind the user's mobile terminal to the charging pile to obtain binding information, and the binding information includes the ID information of the user's mobile terminal. In step S2, when the NFC module senses and matches the feedback signal of the user's mobile terminal, specifically: Compare the user mobile terminal ID code carried in the feedback signal sensed by the NFC module with the ID information in the binding information. If the comparison is consistent, the matching passes; otherwise, the matching fails. The time interval from receiving the enabling physical signal of the termination button of the charging gun in step S2 to waking up the NFC module of the charging pile to sense the feedback signal of the user's mobile terminal is less than the first preset threshold.

[0024] As described above, by binding the user terminal ID information, the NFC module quickly compares the authentication information to achieve a highly secure one-to-one matching, reducing the risk of illegal operations. At the same time, the time interval from button trigger to NFC wake-up is extremely short (less than the first preset threshold), ensuring a quick response from pressing the button to waking up the NFC module and ensuring the real-time and certainty of the control signal.

[0025] Further, after the feedback signal matching in step S4 passes, it further includes: S41. Generate a charging end signal and transmit the charging end signal to the main control chip of the charging pile through a preset interrupt signal line. The preset interrupt signal line is a physical signal line between the signal feedback pin of the NFC module and the signal receiving pin of the main control chip.

[0026] As described above, adopting the wired signal transmission mechanism of the preset interrupt signal line ensures the real-time and certainty of signal transmission, avoids the stability risk brought by the dependence on the wireless network, and improves the reliability of the charging pile system.

[0027] Further, in step S4, controlling the relay of the charging pile to cut off the power supply and controlling the charging gun to unlock and then sending a gun removal prompt to the user specifically includes: S42. After the main control chip receives the charging end signal, control the relay coil of the charging pile to disconnect and detect the coil level signal of the collected relay. S43. If the coil level signal is 0, control the charging gun to unlock and detect the charging gun state in real time. S44. If the charging gun state is the unlocked state, send a gun removal prompt to the user mobile terminal through the NFC module.

[0028] As described above, the main control chip directly controls the relay coil to disconnect and detects the coil level signal to ensure the accuracy and reliability of cutting off the power supply of the charging pile. At the same time, after confirming that the relay coil level signal is 0 (i.e., the disconnected state), the charging gun is unlocked and the charging gun state is detected in real time to ensure the safe unlocking and state monitoring of the charging gun. Finally, a gun removal prompt is sent through the NFC module after the charging gun is unlocked to optimize the user experience and ensure that the user removes the gun in time.

[0029] Further, after controlling the charging pile to automatically stop charging in step S3, it further includes: Sending an NFC authentication prompt to the user mobile terminal, and after the NFC module of the charging pile senses the feedback signal of the user mobile terminal, controlling the relay of the charging pile to cut off the power supply and controlling the charging gun to unlock.

[0030] As described above, after automatically stopping charging, an NFC authentication prompt is sent to the user's mobile terminal to ensure that authentication can still be performed through user confirmation in special cases (such as NFC module failure), increasing the flexibility and security of the charging pile system.

[0031] A method and system for controlling electric vehicle charging according to the present invention are applicable to the scenario where an electric vehicle is charged at a charging pile. The following will be described in conjunction with specific embodiments.

[0032] Please refer to Figure 1 , Embodiment 1 of the present invention is as follows: A method for controlling electric vehicle charging, as Figure 1 shown, includes the steps: S1. Receive the scanning code signal of the user's mobile terminal, control the charging pile to start charging according to the scanning code signal, and lock the charging gun corresponding to the charging pile.

[0033] S2. When receiving the enabled physical signal of the termination button of the charging gun, wake up the NFC module of the charging pile. The NFC module is used to sense the feedback signal of the user's mobile terminal and perform matching.

[0034] S3. If the feedback signal fails to pass the matching within the preset time, control the charging pile to automatically stop charging.

[0035] S4. If the feedback signal passes the matching within the preset time, control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun removal prompt to the user.

[0036] That is, in this embodiment, charging is started by scanning the code with the user's mobile terminal, and at the same time, the physical termination button is used in combination with the NFC module for NFC authentication to ensure that only authorized users can stop charging. While simplifying the operation process, it effectively prevents misoperations. At the same time, the near-field NFC authentication method also effectively reduces the dependence on the network, improves the reliability of the charging pile system, and automatically stops charging when the corresponding NFC feedback signal is not matched within the preset time to ensure charging safety. When the corresponding NFC feedback signal is matched, the charging power supply is completely cut off through the relay and then the charging gun is unlocked to ensure the real-time and certainty of charging termination.

[0037] In addition, in this embodiment, after controlling the charging pile to automatically stop charging in step S3, it further includes: Sending an NFC authentication prompt to the user's mobile terminal, and after the NFC module of the charging pile senses the feedback signal of the user's mobile terminal, controlling the relay of the charging pile to cut off the power supply and controlling the charging gun to unlock.

[0038] That is, after automatically stopping charging, an NFC authentication prompt is sent to the user's mobile terminal to ensure that authentication can still be performed through user confirmation in special cases (such as NFC module failure), increasing the flexibility and security of the charging pile system.

[0039] Please refer to Figure 2 , Embodiment 2 of the present invention is: An electric vehicle charging control method. On the basis of the above Embodiment 1, in this embodiment, after receiving the scanning code signal of the user's mobile terminal in step S1, it further includes: Bind the user's mobile terminal to the charging pile to obtain binding information, where the binding information includes the ID information of the user's mobile terminal.

[0040] Then, in step S2, the NFC module senses the feedback signal of the user's mobile terminal and performs matching, specifically: According to the user mobile terminal ID code carried in the feedback signal sensed by the NFC module, compare it with the ID information in the binding information. If the comparison is consistent, the matching passes; otherwise, the matching fails.

[0041] At the same time, the time interval from receiving the enabling physical signal of the termination button of the charging gun in step S2 to waking up the NFC module of the charging pile to sense the feedback signal of the user's mobile terminal is less than the first preset threshold. In this embodiment, the first preset threshold can be limited to 5 ms.

[0042] That is, in this embodiment, by binding the user terminal ID information, the NFC module quickly compares and authenticates the information, realizing one-to-one matching with high security and reducing the risk of illegal operations; at the same time, by setting the time interval to 5 ms, the time interval from button triggering to NFC wake-up is extremely short (less than the first preset threshold, and the traditional solution requires 20 - 100 ms), ensuring a quick response from pressing the button to waking up the NFC module and ensuring the real-time and certainty of the control signal.

[0043] At the same time, in this embodiment, as Figure 2 shown, the preset time in steps S3 and S4 can be limited to 2 seconds, that is, after receiving the feedback signal sensed by the NFC module of the target user's mobile phone and the matching passes within 2 seconds, step S4 is executed. In other equivalent embodiments, the preset time can also be limited according to actual needs. Since the sensing distance of the NFC module is usually within a few centimeters to more than a dozen centimeters, therefore, the time when the NFC module senses the target user's mobile phone can be limited based on the sensing distance of the NFC module to ensure that the judgment result and judgment efficiency are not affected by setting the preset time too short or too long, effectively approaching the single-step operation design of "pressing the emergency stop", and realizing the effect that the user can directly cut off the power output of the charging pile only through the physical termination button on the charging gun.

[0044] Meanwhile, for another example Figure 2 As shown, after the feedback signal matching in step S4 is passed, it further includes: S41. Generate a charging end signal, and transmit the charging end signal to the main control chip of the charging pile through a preset interrupt signal line. The preset interrupt signal line is a physical signal line between the signal feedback pin of the NFC module and the signal receiving pin of the main control chip.

[0045] That is, adopt the wired signal transmission mechanism of the preset interrupt signal line to ensure the real-time performance and certainty of signal transmission, avoid the stability risks brought by the dependence on the wireless network, and improve the reliability of the charging pile system.

[0046] In addition, in this embodiment, for another example Figure 2 As shown, in step S4, control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and then send a gun removal prompt to the user. Specifically: S42. After the main control chip receives the charging end signal, control the relay coil of the charging pile to disconnect, and detect the coil level signal of the collected relay.

[0047] S43. If the coil level signal is 0, control the charging gun to unlock, and detect the charging gun state in real time.

[0048] S44. If the charging gun state is the unlocked state, send a gun removal prompt to the user mobile terminal through the NFC module.

[0049] That is, the main control chip directly controls the relay coil to disconnect and detects the coil level signal to ensure the accuracy and reliability of the charging pile power cut-off; at the same time, after confirming that the relay coil level signal is 0 (i.e., the disconnected state), unlock the charging gun and detect the charging gun state in real time to ensure the safe unlocking and status monitoring of the charging gun; finally, send a gun removal prompt through the NFC module after the charging gun is unlocked to optimize the user experience and ensure that the user removes the gun in time.

[0050] Please refer to Figure 3 , Embodiment 3 of the present invention is: An electric vehicle charging control system 1 includes a memory 2, a processor 3, and a computer program stored on the memory 2 and executable on the processor 3. When the processor 3 executes the computer program, it implements the steps in a method for controlling the charging of an electric vehicle in the above Embodiment 1 or Embodiment 2.

[0051] In summary, an electric vehicle charging control method and system provided by the present invention have the following beneficial effects: 1. Simplified operation process: Adopting a single-step operation design of "press to stop", users only need to directly cut off the power output of the charging pile through the physical termination button on the charging gun. At the same time, combined with the near-field authentication of the NFC module, it is ensured that only authorized users can terminate charging through the button, effectively preventing misoperations and eliminating the double operation steps of "confirm on the mobile phone + unlock the pile body" in the traditional process.

[0052] 2. Improved system reliability: Adopting a wired signal transmission mechanism of the interrupt signal line to avoid the stability risks brought by the dependence on the wireless network; at the same time, the time from pressing the hardware-level physical termination button to waking up the NFC module is 5ms, ensuring the fast response of NFC authentication, and then ensuring the real-time and certainty of the control signal.

[0053] 3. Optimized user experience: The number of operation steps is reduced, and the charging end process is simplified from multiple-step operations to a single press, while eliminating the uncertainty of users waiting for network responses.

[0054] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. An electric vehicle charging control method, characterized in that Including the steps: S1. Receive the scanning code signal of the user's mobile terminal, control the charging pile to start charging according to the scanning code signal, and lock the charging gun corresponding to the charging pile; S2. When receiving the enabling physical signal of the termination button of the charging gun, wake up the NFC module of the charging pile, and the NFC module is used to sense the feedback signal of the user's mobile terminal and perform matching; S3. If the feedback signal fails to pass the match within the preset time, control the charging pile to automatically stop charging; S4. If the feedback signal passes the match within the preset time, control the relay of the charging pile to cut off the power supply, control the charging gun to unlock, and send a gun removal prompt to the user; After the feedback signal passes the match in step S4, it further includes: S41. Generate a charging end signal, and transmit the charging end signal to the main control chip of the charging pile through a preset interrupt signal line, and the preset interrupt signal line is a physical signal line between the signal feedback pin of the NFC module and the signal receiving pin of the main control chip; In step S4, controlling the relay of the charging pile to cut off the power supply, controlling the charging gun to unlock, and sending a gun removal prompt to the user specifically means: S42. After the main control chip receives the charging end signal, control the relay coil of the charging pile to disconnect, and detect the collected coil level signal of the relay; S43. If the coil level signal is 0, control the charging gun to unlock and detect the charging gun state in real time; S44. If the charging gun state is the unlocked state, send a gun removal prompt to the user mobile terminal through the NFC module.

2. The electric vehicle charging control method according to claim 1, characterized in that After receiving the scanning code signal of the user's mobile terminal in step S1, it further includes: Bind the user's mobile terminal to the charging pile to obtain binding information, and the binding information includes the ID information of the user's mobile terminal; In step S2, the NFC module senses the feedback signal of the user's mobile terminal and performs matching specifically as: Compare the user mobile terminal ID code carried in the feedback signal sensed by the NFC module with the ID information in the binding information. If the comparison is consistent, the match passes; otherwise, the match fails; The time interval from receiving the enabling physical signal of the termination button of the charging gun to waking up the NFC module of the charging pile to sense the feedback signal of the user's mobile terminal in step S2 is less than the first preset threshold.

3. A method for controlling electric vehicle charging according to claim 1, characterized in that, After controlling the charging pile to automatically stop charging in step S3, it further includes: Send an NFC authentication prompt to the user's mobile terminal, and after the NFC module of the charging pile senses the feedback signal of the user's mobile terminal, control the relay of the charging pile to cut off the power supply and control the charging gun to unlock.

4. An electric vehicle charging control system, characterized in that, Including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the following steps are implemented: S1. Receive the scanning code signal of the user's mobile terminal, control the charging pile to start charging according to the scanning code signal, and lock the charging gun corresponding to the charging pile; S2. When receiving the enabling physical signal of the termination button of the charging gun, wake up the NFC module of the charging pile, and the NFC module is used to sense and match the feedback signal of the user mobile terminal; S3. If the feedback signal fails to pass the match within the preset time, control the charging pile to stop charging automatically; S4. If the feedback signal passes the match within the preset time, control the relay of the charging pile to cut off the power supply, and control the charging gun to unlock and send a gun removal prompt to the user; After the feedback signal passes the match in step S4, it further includes: S41. Generate a charging end signal, and transmit the charging end signal to the main control chip of the charging pile through a preset interrupt signal line, and the preset interrupt signal line is a physical signal line between the signal feedback pin of the NFC module and the signal receiving pin of the main control chip; In step S4, controlling the relay of the charging pile to cut off the power supply, and controlling the charging gun to unlock and send a gun removal prompt to the user specifically means: S42. After the main control chip receives the charging end signal, control the relay coil of the charging pile to disconnect, and detect the collected coil level signal of the relay; S43. If the coil level signal is 0, control the charging gun to unlock and detect the charging gun status in real time; S44. If the charging gun status is the unlocked state, send a gun removal prompt to the user mobile terminal through the NFC module.

5. The electric vehicle charging control system according to claim 4, characterized in that, After receiving the scanning code signal of the user mobile terminal in step S1, it further includes: Bind the user mobile terminal to the charging pile to obtain binding information, and the binding information includes the ID information of the user mobile terminal; In step S2, the NFC module senses and matches the feedback signal of the user mobile terminal specifically means: Compare the user mobile terminal ID code carried in the feedback signal sensed by the NFC module with the ID information in the binding information. If the comparison is consistent, the match passes; otherwise, the match fails; The time interval from receiving the enabling physical signal of the termination button of the charging gun in step S2 to waking up the NFC module of the charging pile to sense the feedback signal of the user mobile terminal is less than the first preset threshold.

6. The electric vehicle charging control system according to claim 4, wherein, After controlling the charging pile to stop charging automatically in step S3, it further includes: Send an NFC authentication prompt to the user mobile terminal, and after the NFC module of the charging pile senses the feedback signal of the user mobile terminal, control the relay of the charging pile to cut off the power supply and control the charging gun to unlock.

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