Charging port electronic lock control method and system

Abstract

The invention discloses a charging port electronic lock control method. The method comprises the steps that high-low voltage state signals, charging working condition information, gun inserting charging state information, charging system fault self-checking information and fortification information of a vehicle are collected; and unlocking or locking of an electronic lock of the charging gun is controlled according to the collected high and low voltage state signals of the vehicle, the charging working condition information, the gun insertion charging state information, the charging system fault self-checking information and the fortification information. According to the method, a scientific and reasonable charging port electronic lock unlocking method is formulated, it is guaranteed that a user can normally unlock and pull out the gun under various charging working conditions to the maximum extent, and the problem that the gun cannot be pulled out due to damage of alternating current charging equipment and vehicle faults is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of charging port electronic lock control, and in particular to a charging port electronic lock control method and system. Background Art

[0002] When the electric vehicle needs to be charged, the charging gun is inserted into the car's charging port to complete the charging connection; in order to ensure the connection reliability between the charging gun and the charging port and avoid accidental plugging and unplugging, the charging gun is generally provided with a charging gun electronic lock; after the charging gun is inserted into the charging port to complete the connection and charging, the electronic lock is locked to realize the locking control of the electronic lock; the electronic lock locking mechanism and control have been applied in the prior art, such as the electronic lock control device and charging gun of the charging gun with patent application number 202010428816.X, which uses a resistance signal to feedback the extension length and status of the electronic lock, so that the electric vehicle can accurately know the status of the electronic lock during the charging process, and at the same time provide basic information for the control of the electronic lock during the charging process.

[0003] The traditional electronic lock control strategy is to lock the electronic lock only during charging and unlock the electronic lock after charging is completed. This electronic lock control solution has a low level of intelligent control. In addition, due to unclear control requirements and logic of the electric vehicle charging electronic lock, the electronic lock control strategy is unreasonable, which brings a lot of unnecessary troubles to customers when using slow charging. It often causes a series of problems such as damage to the electronic lock or charging gun at the charging port due to violent pulling out of the gun, and inability to pull out the gun. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a charging port electronic lock control method and device, which can realize accurate recognition of user intention and unlocking and locking of the electronic lock through reasonable design.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a charging port electronic lock control method, which collects the vehicle's high and low voltage status signals, charging condition information, gun plug charging status information, charging system fault self-detection information and defense information; and controls the unlocking or locking of the charging gun electronic lock according to the collected vehicle's high and low voltage status signals, charging condition information, gun plug charging status information, charging system fault self-detection information and defense information.

[0006] When it is detected that the vehicle is using an AC charging pile or other AC charging equipment for slow charging, when the on-board charger detects the "plug charging" signal and the slow charging system of the new energy vehicle functions normally, the on-board charger controls the electronic lock of the charging port to remain locked.

[0007] When the vehicle is detected to be in the "OFF" gear and is being slowly charged using an AC charging device, and the on-board charger detects a "plug in charging" signal, receives an arming command from the smart key, or the vehicle's BCM automatically arms without any operation within a predetermined time, the on-board charger controls the electronic lock of the charging port to lock.

[0008] If the vehicle is detected to be in the "OFF" gear and is being slowly charged using an AC charging device, and the on-board charger detects a "charging fault" signal or receives a "scheduled charging" command, the on-board charger determines whether to control the charging port electronic lock to unlock based on the "charging fault" level and the "scheduled charging" command.

[0009] When it is detected that the vehicle is in the "ON" gear and is using an AC charging device for slow charging, when the on-board charger detects the "plug in charging" signal, receives the arming command from the smart key, or the vehicle BCM automatically arms without any operation within the predetermined time, the on-board charger remains locked according to the control of the charging port electronic lock.

[0010] If the arming command from the smart key is not received and the AC charging device is used for slow charging, the on-board charger controls the electronic lock of the charging port to lock after the charging setting time.

[0011] When the vehicle is detected to be in the "ON" gear and is using AC charging equipment for slow charging, if the on-board charger detects a "charging fault" signal or receives a "scheduled charging" command, the on-board charger controls the electronic lock of the charging port to unlock according to the "charging fault" level and the "scheduled charging" command.

[0012] Before executing the electronic lock unlocking command, detect whether the current charging gun is in the unplugged state. If so, when executing the electronic lock unlocking action, control the locking torque of the electronic lock to slowly decrease according to the set time threshold until the unlocking is completed.

[0013] A charging port electronic lock control system includes an on-board controller and a charging port electronic lock; the on-board controller collects and obtains the vehicle's high and low voltage status signals, charging operating condition information, charging gun plug status information, charging system fault self-test information, and defense information through a gateway; the on-board controller generates electronic lock control instructions based on the collected vehicle's high and low voltage status signals, charging operating condition information, charging gun plug status information, charging system fault self-test information, and defense information, and performs unlocking control on the charging port electronic lock based on the control instructions.

[0014] The gateway is connected to the vehicle computer, smart key, and mobile phone app through the network to read or receive the vehicle's high and low voltage status signals, charging condition information, plug-in charging status information, charging system fault self-detection information, and defense information.

[0015] The advantages of the present invention are that no matter what kind of AC charging equipment is used for slow charging of the vehicle, when the vehicle is in the "OFF" or "ON" gear, it can effectively avoid the restrictions on the locking or unlocking of the charging port electronic lock due to factors such as the operation speed of the smart key, the signal transmission cycle, the response speed and control strategy of the on-board controller in the existing mass production solution; the embodiment of the present invention, by formulating a scientific and reasonable method for unlocking the charging port electronic lock, maximizes the guarantee that the user can unlock and draw the gun normally under various charging conditions, and effectively avoids the problem of being unable to draw the gun due to damage to the AC charging equipment and vehicle failure; the embodiment of the present invention, by receiving the vehicle smart key unlocking command during the normal slow charging process, the on-board charger controls the charging port electronic lock to execute the unlocking action, which not only prevents illegal drawing of the gun and theft of the AC charging gun, but also facilitates the user to draw the AC charging gun through standardized operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following is a brief description of the contents and symbols in the drawings of the present invention:

[0017] Figure 1 This is a schematic diagram of the control process of the charging port electronic lock of the present invention;

[0018] Figure 2 This is a control logic block diagram of the charging port electronic lock of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention will be further explained in detail below by describing the best embodiment with reference to the accompanying drawings.

[0020] Example 1:

[0021] In order to solve the problems of the electronic lock of the charging port being unable to be effectively unlocked and unloaded during AC slow charging on existing new energy vehicles, a scientific and reasonable charging port electronic lock control strategy is formulated to effectively solve the problems of difficulty in unlocking and inability to unlock the electronic lock of the charging port in existing electric vehicles.

[0022] The scheme of this application is as follows Figure 1 As shown, a charging port electronic lock control method, the control logic includes the following:

[0023] (1) The vehicle is in the "OFF" position, that is, the vehicle is disconnected from the high / low voltage power supply, and the high / low voltage electrical modules are not working;

[0024] (2) The vehicle is in the "ON" gear, that is, the high / low voltage electricity on the vehicle and the high and low voltage electrical appliances are all powered; the corresponding ON gear or OFF gear status signal is detected by detecting the high voltage status signal of the current gear.

[0025] (3) When the vehicle is in slow charging mode using an AC charging pile or other AC charging equipment, when the onboard charger detects a "plug-in charging" signal and the slow charging system of the new energy vehicle functions normally, the onboard charger controls the electronic lock of the charging port to keep it locked; when in slow charging mode, the vehicle will only enter slow charging when the slow charging system functions normally. Therefore, considering the slow charging system is in a fault state, the vehicle will only enter slow charging when the slow charging system is normal. At this time, when the plug-in charging signal is detected, the electronic lock is controlled to lock and the slow charging process is entered. The plug-in charging signal is obtained through the CC, CP and other signals between the charging gun and the onboard charger; the slow charging system includes but is not limited to the onboard charger and other controllers, which obtain their own fault status signals through self-test.

[0026] (3) When the vehicle is in the "OFF" gear and is using an AC charging device for slow charging, when the on-board charger detects a "plug-in charging" signal, receives an arming command from the smart key, or the vehicle BCM (body control unit) is automatically armed when there is no operation within a predetermined time, the on-board charger controls the electronic lock of the charging port to perform a locking action; after the plug-in charging is completed, the plug-in charging signal is obtained. Since the OFF state is at low voltage at this time, the vehicle is not armed at this time, which means that the user is still nearby or in the car, and charging may be suspended. Therefore, the electronic lock will not be locked at this time. Only when an arming command is detected or the vehicle has not been operated for a long time will the BCM self-lock and arm. Regardless of the type of arming, once the arming signal is detected, the vehicle will be locked immediately, and the electronic lock will be locked through the vehicle arming signal in the OFF gear, thereby achieving a reasonable and scientific electronic lock locking control that meets user needs.

[0027] (4) When the vehicle is in the "OFF" gear and is using an AC charging device for slow charging, if the onboard charger detects a "charging fault" signal or receives a "scheduled charging" instruction, the onboard charger will determine whether to control the electronic lock of the charging port to unlock according to the "charging fault" level and the "scheduled charging" instruction; if the vehicle has a charging fault, the charging will be carried out according to the fault level. Multiple control strategies such as reduced power charging and charging stop will be implemented, and the unlocking of the electronic lock will be controlled according to the fault level. When the fault level reaches the point of stopping charging, the charging will be stopped and the electronic lock will be unlocked at the same time, realizing the stopping of charging and unlocking after the fault. Scheduled charging means that the user charges according to the scheduled time, with charging start and charging end times set. According to the scheduled charging instruction, the electronic lock of the charging port is unlocked after the scheduled charging end time is reached, thereby meeting the purpose of scheduled charging control.

[0028] (5) When the vehicle is in the "ON" position (i.e., the vehicle has high / low voltage power and high / low voltage electrical appliances are powered) and is using an AC charging device for slow charging, when the on-board charger detects a "plug-in charging" signal, receives an arming command from the smart key, or the vehicle's BCM (body control unit) automatically arming without any operation within a predetermined time, the on-board charger remains locked according to the electronic lock of the charging port;

[0029] (6) If the arming command from the smart key is not received and the AC charging device is used for slow charging, after a certain period of time, the on-board charger controls the electronic lock of the charging port to perform the locking action;

[0030] (7) When the vehicle is in the "ON" gear and is using an AC charging device for slow charging, if the on-board charger detects a "charging fault" signal or receives a "scheduled charging" instruction, the on-board charger controls the electronic lock of the charging port to unlock according to the "charging fault" level and the "scheduled charging" instruction; when the vehicle is in the ON gear, the vehicle is in the starting state, and the electronic lock can be locked according to the gun insertion and arming signals, and the electronic lock can be unlocked after a charging fault or the scheduled charging end time is reached.

[0031] like Figure 2 As shown, the charging port electronic lock control system corresponding to the control method of this embodiment includes a vehicle-mounted controller and a charging port electronic lock; the vehicle-mounted controller collects and obtains the vehicle's high and low voltage status signals, charging condition information, plug-in charging status information, charging system fault self-detection information, and defense information through the gateway; the vehicle-mounted controller generates an electronic lock control instruction based on the collected vehicle's high and low voltage status signals, charging condition information, plug-in charging status information, charging system fault self-detection information, and defense information, and performs unlocking control on the charging port electronic lock based on the control instruction.

[0032] The gateway connects to the vehicle's computer, smart key, and mobile app via the network to read or receive the vehicle's high and low voltage status signals, charging status information, charging plug status information, charging system fault self-diagnosis information, and defense information. The gateway accesses the vehicle's computer and other in-vehicle controls via the vehicle's CAN network. The gateway also connects to the vehicle's internet-connected TBOX module via the CAN network to receive signals from the mobile app. This information provides the basic conditional data for unlocking and locking decisions.

[0033] Compared with the European standard electronic lock control strategy in the existing mass-produced solution, the embodiment of the present invention can effectively avoid the restrictions on the locking or unlocking of the charging port electronic lock due to factors such as the operation speed of the smart key, the signal transmission cycle, the response speed and control strategy of the vehicle-mounted controller, etc. in the existing mass-produced solution, regardless of the AC charging device used for slow charging of the vehicle, when the vehicle is in the "OFF" or "ON" gear. The embodiment of the present invention formulates a scientific and reasonable charging port electronic lock unlocking method to maximize the guarantee that users can unlock and draw the gun normally under various charging conditions, and effectively avoid the problem of being unable to draw the gun due to damage to the AC charging device or vehicle failure. The embodiment of the present invention controls the charging port electronic lock to execute the unlocking action after the on-board charger receives the vehicle smart key disarming command during normal slow charging, which not only prevents illegal drawing of the gun and anti-theft of the AC charging gun, but also facilitates users to draw the AC charging gun through standardized operations.

[0034] Example 2

[0035] This embodiment further develops and implements electronic lock control based on Example 1. The specific solution includes: detecting whether the charging gun is currently unplugged before executing the electronic lock unlocking command. If so, when executing the electronic lock unlocking action, controlling the locking torque of the electronic lock to slowly decrease according to a set time threshold until unlocking is completed.

[0036] The locking principle of the electronic lock is to tighten or lock the charging gun by controlling the locking mechanism through a motor. When the charging gun is locked, it is generally impossible to unplug the charging gun. However, if the user pulls the charging gun with force, if the electronic lock changes from locked to unlocked, the locking force of the electronic lock may disappear instantly, causing the user to lose balance when unplugging the charging gun, which may easily cause a safety hazard. Therefore, the electronic lock unlocking control logic designed in this solution is used to solve the defect that if someone pulls the charging gun during the unlocking process, it is easy to cause the person to lose balance. Therefore, in this solution, after receiving the unlocking command, it detects whether the current charging gun is in the unplugged state. If not, it means that the charging gun is not in the unplugged state at this time. At this time, the electronic lock is controlled to directly unlock, that is, the electronic lock motor is directly controlled to release the locking mechanism to complete the unlocking. If it is, it means that someone is pulling out the charging gun. If the charging port electronic lock is directly unlocked at this time, it may cause the person to lose balance. Therefore, in order to solve this technical problem, the lock is unlocked slowly according to the set time to avoid the loss of locking force caused by direct unlocking, which may cause the person to lose balance. The slow unlocking in this embodiment includes: within a set time threshold period, the torque of the motor controlling the electronic lock in the locked state is uniformly reduced until it reaches the unlocked state. Since the locking of the electronic lock is acted on the locking structure by the torque applied by the motor drive, the connection between the charging grab and the charging port is also slowly loosened during the process of slowly releasing the torque, thereby achieving a slow balance of force; from locking to unlocking, the position of the motor is from the locked position to the unlocked position. In terms of control, the torque of the motor is reduced from the torque at the time of locking to 0 at a fixed reduction rate. At this time, the torque of the motor when it remains in the locked position is reduced to 0, and then the motor rotates according to the set The automatic speed rotates from the locked position to the unlocked position, thereby unlocking the electronic lock. In this way, the torque is gradually reduced to 0 in the locked position, and then the unlocking position is slowly reached at the set rate. The total time spent is within the set time threshold. This can avoid the safety risk of losing balance at the moment of unlocking due to instantaneous unlocking during the unlocking process and the user pulling the gun hard at this time. This method of gradually reducing the torque and gradually going from locking to unlocking gradually reduces the force of locking the charging gun. The charging gun can be gradually pulled out before it is completely unlocked, giving the operator a sense of feeling and avoiding safety hazards caused by excessive force by the operator.

[0037] In a preferred embodiment, when unlocking the electronic lock, it is necessary to detect whether someone is currently unplugging the charging gun, and then control the electronic lock differently based on whether someone is unplugging the charging gun. The solution for detecting whether someone is unplugging the charging gun includes:

[0038] Solution 1: Immediately after receiving the unlock command, the vehicle's surround-view camera is called to collect image information of the charging gun's location. Image recognition is used to determine whether there is anyone at the current charging gun location and whether the gun-pulling action is detected. If the gun-pulling action is detected, it is determined that the charging gun is in the unplugged state.

[0039] Option 2: A touch switch is set on the charging gun handle, and the touch switch detects the signal that the user is holding the charging gun handle. The signal is transmitted from the charging gun to the vehicle controller to determine whether the gun is in the unplugged state.

[0040] In a preferred embodiment of the present application, after the electronic lock is locked, the vehicle's status signal is detected in real time. The detected vehicle status signal includes but is not limited to the ignition status and the gear status. When the vehicle is detected to be ignited or in a high-voltage state, the vehicle intention is predicted based on the current gear signal. When a change in the vehicle gear is detected, an electronic lock unlocking command is immediately issued to avoid damage to the vehicle due to forgetting to unplug the gun or unlock the electronic lock. Once the vehicle gear changes from P gear to D, R, or N gear, the electronic lock is controlled to unlock. At the same time, a reminder signal that the charging gun has not been unplugged is issued through the vehicle voice and / or display to remind the driver that the charging gun has not been unplugged, thereby avoiding damage to the charging port caused by driving the vehicle without unplugging the gun due to negligence.

[0041] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A charging port electronic lock control method, characterized by: Collect the vehicle's high and low voltage status signals, charging condition information, gun charging status information, charging system fault self-detection information, and defense information; control the unlocking or locking of the charging gun electronic lock based on the collected vehicle's high and low voltage status signals, charging condition information, gun charging status information, charging system fault self-detection information, and defense information.

2. The method for controlling a charging port electronic lock according to claim 1, wherein: When it is detected that the vehicle is using an AC charging pile or other AC charging equipment for slow charging, when the on-board charger detects the "plug charging" signal and the slow charging system of the new energy vehicle functions normally, the on-board charger controls the electronic lock of the charging port to remain locked.

3. The method for controlling a charging port electronic lock according to claim 1, wherein: When the vehicle is detected to be in the "OFF" gear and is being slowly charged using an AC charging device, and the on-board charger detects a "plug in charging" signal, receives an arming command from the smart key, or the vehicle's BCM automatically arms without any operation within a predetermined time, the on-board charger controls the electronic lock of the charging port to lock.

4. The method for controlling a charging port electronic lock according to claim 1, wherein: If the vehicle is detected to be in the "OFF" gear and is being slowly charged using an AC charger, and the onboard charger detects a "charging fault" signal or receives a "schedule charging" command, the onboard charger determines whether to control the charging port electronic lock to unlock based on the "charging fault" level and the "schedule charging" command.

5. The method for controlling a charging port electronic lock according to claim 1, wherein: When the vehicle is detected to be in the "ON" gear and is being slowly charged using an AC charging device, and the on-board charger detects a "plug-in charging" signal, receives an arming command from the smart key, or the vehicle's BCM automatically arms the vehicle without any operation within a predetermined time, the on-board charger remains locked according to the control of the charging port electronic lock.

6. A charging port electronic lock control method according to claim 5, characterized in that: If the arming command from the smart key is not received and the AC charging device is used for slow charging, the on-board charger controls the electronic lock of the charging port to lock after the charging setting time.

7. A charging port electronic lock control method according to any one of claims 1 to 6, characterized in that: When the vehicle is detected to be in the "ON" gear and is using an AC charging device for slow charging, if the on-board charger detects a "charging fault" signal or receives a "scheduled charging" command, the on-board charger controls the charging port electronic lock to unlock according to the "charging fault" level and the "scheduled charging" command.

8. A charging port electronic lock control method according to any one of claims 1 to 6, characterized in that: Before executing the electronic lock unlocking command, detect whether the current charging gun is in the unplugged state. If so, when executing the electronic lock unlocking action, control the locking torque of the electronic lock to slowly decrease according to the set time threshold until the unlocking is completed.

9. A charging port electronic lock control system, characterized by: It includes an on-board controller and a charging port electronic lock; the on-board controller collects and obtains the vehicle's high and low voltage status signals, charging condition information, charging gun plug status information, charging system fault self-detection information and defense information through the gateway; the on-board controller generates control instructions for the electronic lock based on the collected vehicle's high and low voltage status signals, charging condition information, charging gun plug status information, charging system fault self-detection information and defense information, and unlocks the charging port electronic lock based on the control instructions.

10. The charging port electronic lock control system according to claim 9, characterized in that: The gateway is connected to the vehicle computer, smart key, and mobile phone app through the network to read or receive the vehicle's high and low voltage status signals, charging condition information, plug-in charging status information, charging system fault self-detection information, and defense information.

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