A control method and device for an AC / DC charging integrated socket electronic lock

Abstract

The application discloses an AC / DC charging integrated socket electronic lock control method and device, which receives an electronic lock demand signal sent by a battery management system, if the electronic lock demand signal is locking, sends a charging integrated socket locking instruction to make the charging integrated socket electronic lock lock, if the electronic lock demand signal is unlocking, judges the connection state of an electric vehicle and a charging gun, if the connection state is complete connection, receives a vehicle door lock signal sent by a vehicle controller, sends a charging integrated socket locking instruction or a charging integrated socket unlocking instruction according to the vehicle door lock signal and the state of the charging integrated socket electronic lock, if the connection state is not connection, judges whether the state of the charging integrated socket electronic lock is a locking state, if yes, sends a charging integrated socket unlocking instruction, if no, does not send any instruction, and the above method optimizes the electronic lock control process and improves the electronic lock control reliability.

Description

Technical Field

[0001] This invention relates to the field of electronic lock control technology for electric vehicles, and in particular to a method and device for controlling an integrated AC / DC charging socket electronic lock. Background Technology

[0002] The electronic lock on the charging socket of an electric vehicle keeps the charging interface in the normal connected position during charging, preventing accidental disconnection while the charging interface is energized and ensuring charging safety. Currently, domestic electric vehicles use independent interfaces for AC and DC charging sockets. The electronic lock on the AC charging socket is controlled by the vehicle, while the DC charging socket has no electronic lock structure; the electronic lock structure for the DC charging connection is located at the DC charging station and is directly controlled by the station. However, some electric vehicles exported to the US and Europe use charging interface standards that differ from the national standard. They employ integrated AC / DC charging sockets, sharing the same AC / DC interface, and the electronic lock on the socket is uniformly controlled by the vehicle. Therefore, the design of the electronic lock control strategy must comprehensively consider the operating conditions under both AC and DC charging to ensure safe and reliable charging.

[0003] Currently, the electronic lock control for AC / DC integrated sockets in the industry mainly relies on different modules such as the on-board charger and battery management system to control the electronic lock commands under AC and DC charging conditions. In addition, signals from multiple modules such as the vehicle controller and body controller are involved in the judgment, making the control process complex and increasing the uncontrollability of the electronic lock structure and the risk of the vehicle failing to charge. Furthermore, releasing the electronic lock uniformly when the vehicle is not charging without distinguishing between AC and DC charging conditions can lead to the risk of losing the AC charging cable and maliciously unplugging the charging gun, resulting in charging interruption. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a method for controlling an electronic lock in an AC / DC integrated charging socket, thereby resolving the issue that the electronic lock control process of existing AC / DC integrated sockets is complex, resulting in low reliability of the electronic lock control.

[0005] A first aspect of this invention provides a method for controlling an electronic lock on an AC / DC integrated charging socket, the method comprising:

[0006] Receive the electronic lock request signal sent by the battery management system. If the electronic lock request signal is to lock, issue a locking command for the charging socket to lock the electronic lock of the charging socket.

[0007] If the electronic lock requires an unlock signal, the connection status between the electric vehicle and the charging gun is determined. If the connection status is fully connected, the door lock signal sent by the vehicle controller is received, and a charging socket locking command or charging socket unlocking command is issued according to the door lock signal and the status of the charging socket electronic lock.

[0008] If the connection status is not connected, then check if the electronic lock of the charging socket is in the locked state. If it is in the locked state, then issue an unlock command for the charging socket. If it is in the unlocked state, then issue no command.

[0009] In one possible implementation of the first aspect, the door lock signal is obtained by the body control module judging the received remote key signal, obtaining the door lock status, and sending the door lock status signal to the vehicle controller so that the vehicle controller can convert and send the signal.

[0010] In one possible implementation of the first aspect, determining the connection status between the electric vehicle and the charging gun includes:

[0011] Obtain the resistance value at the detection point and determine the connection status between the electric vehicle and the charging gun based on the resistance value;

[0012] If the resistance value is infinite, then the connection status between the electric vehicle and the charging gun is determined to be disconnected.

[0013] If the resistance value is the first preset value, then the connection status between the electric vehicle and the charging gun is determined to be fully connected.

[0014] In one possible implementation of the first aspect, a locking command or unlocking command for the charging socket is issued based on the door lock signal and the status of the charging socket electronic lock, including:

[0015] When the door lock signal is locked, determine whether the electronic lock of the charging socket is locked. If it is, no command is issued. If not, a command to lock the charging socket is issued.

[0016] When the door lock signal is unlocked, it checks whether the electronic lock of the charging socket is locked. If it is, it issues an unlock command for the charging socket; otherwise, it does not issue any command.

[0017] To address the same technical problem, a second aspect of the present invention provides an AC / DC integrated charging socket electronic lock control device, comprising a receiving module, a first judging module, and a second judging module, wherein...

[0018] The receiving module is used to receive the electronic lock request signal sent by the battery management system. If the electronic lock request signal is to lock, it will issue a locking command for the charging socket to lock the electronic lock of the charging socket.

[0019] The first judgment module is used to determine the connection status between the electric vehicle and the charging gun if the electronic lock demand signal is unlock. If the connection status is fully connected, it receives the door lock signal sent by the vehicle controller and issues a charging socket locking command or a charging socket unlocking command according to the door lock signal and the status of the charging socket electronic lock.

[0020] The second judgment module is used to determine whether the electronic lock of the charging socket is in a locked state if the connection status is not connected. If the status is locked, an unlocking command is issued for the charging socket; if the status is unlocked, no command is issued.

[0021] In one possible implementation of the second aspect, the door lock signal is obtained by the body control module judging the received remote key signal, obtaining the door lock status, and sending the door lock status signal to the vehicle controller so that the vehicle controller can convert and send the signal.

[0022] In one possible implementation of the second aspect, the first judgment module includes a data acquisition unit, a first connection status judgment unit, and a second connection status judgment unit, wherein,

[0023] The acquisition unit is used to obtain the resistance value of the detection point and determine the connection status between the electric vehicle and the charging gun based on the resistance value;

[0024] The first connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is not connected if the resistance value is infinite.

[0025] The second connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is fully connected if the resistance value is a first preset value.

[0026] In one possible implementation of the second aspect, the first judgment module further includes a third judgment unit and a fourth judgment unit, wherein,

[0027] The third judgment unit is used to determine whether the electronic lock of the charging socket is locked when the door lock signal is locked. If it is locked, no command is issued; otherwise, a charging socket locking command is issued.

[0028] The fourth judgment unit is used to determine whether the electronic lock of the charging socket is locked when the door lock signal is unlocked. If it is, it issues an unlock command for the charging socket; otherwise, it does not issue any command.

[0029] The technical solution of this invention has the following advantages:

[0030] The AC / DC charging socket electronic lock control method provided in this invention receives an electronic lock request signal from the battery management system. If the electronic lock request signal indicates locking, a locking command is issued to lock the charging socket electronic lock. If the electronic lock request signal indicates unlocking, the connection status between the electric vehicle and the charging gun is determined. If the connection status is fully connected, a door lock signal from the vehicle controller is received, and a locking command or unlocking command is issued based on the door lock signal and the status of the charging socket electronic lock. If the connection status is disconnected, the status of the charging socket electronic lock is determined. If the status is locked, an unlocking command is issued; if the status is unlocked, no command is issued. This method improves the reliability of electronic lock control by optimizing the AC / DC charging socket electronic lock control process. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a flowchart of the electronic lock control method for the AC / DC charging integrated socket in an embodiment of the present invention;

[0033] Figure 2 This is a diagram illustrating the overall architecture of the control system for the AC / DC charging integrated socket electronic lock control method in this embodiment of the invention.

[0034] Figure 3 This is an AC charging control guide circuit diagram of the AC / DC charging integrated socket electronic lock control method in an embodiment of the present invention;

[0035] Figure 4 This is a working mode control logic diagram of the AC / DC charging integrated socket electronic lock control method in an embodiment of the present invention;

[0036] Figure 5 This is a block diagram of the device for controlling the electronic lock of the AC / DC charging integrated socket in an embodiment of the present invention. Detailed Implementation

[0037] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] The automatic report generation method for the laboratory information management system provided in this embodiment of the invention, such as... Figure 1 As shown, Figure 1 The flowchart for the electronic lock control method of AC / DC integrated charging socket includes steps S101 to S103, and the specific steps are as follows:

[0040] S101. Receive the electronic lock request signal sent by the battery management system. If the electronic lock request signal is locked, issue a locking command for the charging socket to lock the electronic lock of the charging socket.

[0041] In this embodiment, as Figure 2 As shown, in the electronic lock control process, the control module system includes an on-board charger (OBC), a battery management system (BMS), a body control module (BCM), a vehicle control unit (VCU), and an AC / DC charging socket. The OBC collects status information from the AC power supply equipment and, upon receiving signals from the BMS and VCU modules, sends unlocking and locking control commands for the electronic lock. Specifically, when charging the electric vehicle begins, the electric vehicle and the charging gun are connected. The BMS sends an electronic lock request signal, which the OBC receives. If the electronic lock request signal indicates locking, the OBC issues a locking command to the charging socket, thus locking the electronic lock on the charging socket.

[0042] It should be noted that the BMS is responsible for collecting the status information of the DC power supply equipment and sending the electronic lock locking / unlocking request signal under DC charging conditions to the OBC, which then controls the electronic lock of the socket to operate. The electronic lock locking of the integrated charging socket refers to the mechanical locking of the charging gun and socket through electronic control after the charging gun is inserted into the socket to begin charging.

[0043] S102. If the electronic lock requires an unlock signal, determine the connection status between the electric vehicle and the charging gun. If the connection status is fully connected, receive the door lock signal sent by the vehicle controller, and issue a charging socket locking command or a charging socket unlocking command based on the door lock signal and the status of the charging socket electronic lock.

[0044] In this embodiment, if the electronic lock requires unlocking, the on-board charger (OBC) determines the connection status between the electric vehicle and the charging gun by detecting the resistance value at the detection point. If the connection status is fully connected, it receives the door lock signal from the vehicle controller, and then issues a locking command or unlocking command to the charging socket based on the door lock signal and the status of the electronic lock of the charging socket.

[0045] It should be noted that the electronic lock unlocking of the integrated charging socket refers to the release of the mechanical lock between the charging gun and the socket through a specific signal or operation when the charging process is completed or needs to be interrupted, so that the charging gun can be pulled out of the socket.

[0046] As an example of this embodiment, under AC or DC charging conditions, the on-board charger (OBC) will lock the electronic lock of the charging socket when any of the following conditions are met:

[0047] 1) The on-board charger (OBC) passes the test as follows: Figure 3 The resistance value at detection point A shown is used to determine the connection status between the vehicle and the charging gun. After confirming that the charging status is fully connected, the door lock signal forwarded by the VCU is then checked. When the door lock is locked, the OBC releases the locking command, which drives the electronic lock of the vehicle charging socket to lock.

[0048] 2) After receiving the electronic lock locking request sent by the battery management system (BMS), the on-board charger (OBC) drives the electronic lock of the vehicle charging socket to lock.

[0049] Under any circumstances, the on-board charger (OBC) will unlock the electronic lock if the following conditions are met:

[0050] The on-board charger (OBC) receives the door lock unlock signal forwarded by the vehicle controller (VCU), and at the same time, the electronic lock request signal sent by the battery management system (BMS) is in the unlocked state.

[0051] In one embodiment, the door lock signal is obtained by the vehicle control module judging the received remote key signal, determining the door lock status, and sending the door lock status signal to the vehicle controller so that the vehicle controller can convert and send the signal.

[0052] In this embodiment, the Body Control Module (BCM) is responsible for receiving the remote key signal to determine the door lock status and sending it to the Vehicle Control Unit (VCU) via the CAN network; the Vehicle Control Unit (VCU) is responsible for receiving the door lock signal from the Body Control Module (BCM) and outputting it to the On-Board Charger (OBC); the AC / DC charging socket is used for power transmission and receives the drive command from the On-Board Charger (OBC) to execute the locking or unlocking action of the electronic lock.

[0053] In one embodiment, determining the connection status between the electric vehicle and the charging gun includes:

[0054] Obtain the resistance value at the detection point and determine the connection status between the electric vehicle and the charging gun based on the resistance value;

[0055] If the resistance value is infinite, then the connection status between the electric vehicle and the charging gun is determined to be disconnected.

[0056] If the resistance value is the first preset value, then the connection status between the electric vehicle and the charging gun is determined to be fully connected.

[0057] In this embodiment, the on-board charger (OBC) detects, for example... Figure 3 The resistance value at detection point A shown in the table is used to determine the connection status between the vehicle and the charging gun. The judgment conditions are shown in Table 1.

[0058] Table 1 Vehicle Interface Connection Status Judgment Table

[0059] Resistance value at detection point A Vehicle interface connection status infinity Not connected R4+RC semi-connected RC Fully connected

[0060] When the resistance value is infinite, the connection between the electric vehicle and the charging gun is determined to be disconnected; when the resistance value is the sum of the resistance value of R4 and the resistance value of RC, the connection between the electric vehicle and the charging gun is determined to be partially connected; when the resistance value is the sum of the resistance values ​​of RC, the connection between the electric vehicle and the charging gun is determined to be fully connected.

[0061] It should be noted that the connection status between the electric vehicle and the charging gun can be understood as the connection status between the charging gun plug and the integrated vehicle charging socket on the electric vehicle.

[0062] In one embodiment, issuing a locking command or unlocking command for the integrated charging socket based on the door lock signal and the status of the electronic lock of the integrated charging socket includes:

[0063] When the door lock signal is locked, determine whether the electronic lock of the charging socket is locked. If it is, no command is issued. If not, a command to lock the charging socket is issued.

[0064] When the door lock signal is unlocked, it checks whether the electronic lock of the charging socket is locked. If it is, it issues an unlock command for the charging socket; otherwise, it does not issue any command.

[0065] In this embodiment, when the on-board charger (OBC) receives the door lock signal, if the door lock signal is locked, it determines whether the electronic lock of the charging socket is locked. If it is, no instruction is issued; otherwise, a locking instruction for the charging socket is issued.

[0066] If the door lock signal is unlocked, determine whether the electronic lock of the charging socket is locked. If it is, issue an unlock command for the charging socket; otherwise, do not issue any command.

[0067] S103. If the connection status is not connected, determine whether the electronic lock of the charging socket is in the locked state. If the status is locked, issue an unlock command for the charging socket. If the status is unlocked, do not issue any command.

[0068] In this embodiment, as Figure 4 As shown, if the electric vehicle is not connected to the charging gun, the system checks whether the electronic lock of the charging socket is locked. If it is locked, an unlocking command is issued; if it is unlocked, no command is issued.

[0069] The control method proposed in this invention integrates the control of the electronic lock of the AC / DC charging socket. Under both AC and DC charging conditions, the OBC (On-Board Control) uniformly controls the electronic lock, resulting in a simple and clear control process, reduced redundancy, enhanced reliability of the electronic lock control, and guaranteed reliable charging connection and use. Furthermore, by associating the electronic lock unlocking conditions with the vehicle door lock status, it prevents the risk of charging interruption due to lost AC charging cables or malicious removal of the charging gun, avoiding economic losses for users and ensuring charging reliability.

[0070] The AC / DC charging integrated socket electronic lock control device provided in this embodiment of the invention, such as... Figure 5 As shown, Figure 5 A block diagram of an electronic lock control device for an AC / DC integrated charging socket includes a receiving module 501, a first judgment module 502, and a second judgment module 503.

[0071] The receiving module 501 is used to receive the electronic lock request signal sent by the battery management system. If the electronic lock request signal is to lock, it sends a locking command to the charging socket to lock the electronic lock of the charging socket.

[0072] The first judgment module 502 is used to determine the connection status between the electric vehicle and the charging gun if the electronic lock demand signal is unlock. If the connection status is fully connected, it receives the door lock signal sent by the vehicle controller and issues a charging socket locking command or a charging socket unlocking command according to the door lock signal and the status of the charging socket electronic lock.

[0073] The second judgment module 503 is used to determine whether the electronic lock of the charging socket is in a locked state if the connection state is not connected. If the state is locked, an unlocking command is issued for the charging socket; if the state is unlocked, no command is issued.

[0074] In one embodiment, the door lock signal is obtained by the vehicle control module judging the received remote key signal, determining the door lock status, and sending the door lock status signal to the vehicle controller so that the vehicle controller can convert and send the signal.

[0075] In one embodiment, the first determination module includes a data acquisition unit, a first connection status determination unit, and a second connection status determination unit, wherein,

[0076] The acquisition unit is used to obtain the resistance value of the detection point and determine the connection status between the electric vehicle and the charging gun based on the resistance value;

[0077] The first connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is not connected if the resistance value is infinite.

[0078] The second connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is fully connected if the resistance value is a first preset value.

[0079] In one embodiment, the first judgment module further includes a third judgment unit and a fourth judgment unit, wherein,

[0080] The third judgment unit is used to determine whether the electronic lock of the charging socket is locked when the door lock signal is locked. If it is locked, no command is issued; otherwise, a charging socket locking command is issued.

[0081] The fourth judgment unit is used to determine whether the electronic lock of the charging socket is locked when the door lock signal is unlocked. If it is, it issues an unlock command for the charging socket; otherwise, it does not issue any command.

[0082] In one embodiment of this application, a computer device is provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above steps. The implementation principle and technical effects of the computer device provided in this embodiment are similar to those of the above method embodiments, and will not be repeated here.

[0083] In one embodiment of this application, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, it performs the above steps; the implementation principle and technical effects of the computer-readable storage medium provided in this embodiment are similar to those of the above method embodiments, and will not be repeated here.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A method for controlling an electronic lock on an AC / DC integrated charging socket, characterized in that, include: The system receives an electronic lock request signal from the battery management system. If the electronic lock request signal is for locking, it issues a locking command for the integrated charging socket to lock the electronic lock of the integrated charging socket. If the electronic lock requires an unlock signal, the connection status between the electric vehicle and the charging gun is determined. If the connection status is fully connected, the door lock signal from the vehicle controller is received. When the door lock signal is locked, the status of the integrated charging socket electronic lock is determined. If it is locked, no command is issued; otherwise, a charging socket locking command is issued. If the door lock signal is unlock, the status of the integrated charging socket electronic lock is determined. If it is locked, a charging socket unlock command is issued; otherwise, no command is issued. If the connection status is not connected, then determine whether the electronic lock of the charging socket is in a locked state. If the status is locked, then issue an unlock command for the charging socket. If the status is unlocked, then issue no command.

2. The electronic lock control method for the AC / DC charging integrated socket as described in claim 1, characterized in that, The door lock signal is obtained by the body control module judging the received remote key signal to determine the door lock status, and then sending the door lock signal to the vehicle controller so that the vehicle controller can convert and send the signal.

3. The electronic lock control method for the AC / DC charging integrated socket as described in claim 1, characterized in that, The determination of the connection status between the electric vehicle and the charging gun includes: Obtain the resistance value at the detection point, and determine the connection status between the electric vehicle and the charging gun based on the resistance value; If the resistance value is infinite, then the connection status between the electric vehicle and the charging gun is determined to be disconnected. If the resistance value is a first preset value, then the connection status between the electric vehicle and the charging gun is determined to be fully connected.

4. A control device for an integrated AC / DC charging socket electronic lock, comprising a receiving module, a first judgment module, and a second judgment module, wherein, The receiving module is used to receive the electronic lock request signal sent by the battery management system. If the electronic lock request signal is to lock, it issues a charging socket lock command to lock the charging socket electronic lock. The first judgment module is used to determine the connection status between the electric vehicle and the charging gun if the electronic lock demand signal is unlocked. If the connection status is fully connected, it receives the door lock signal sent by the vehicle controller and issues a charging socket locking command or a charging socket unlocking command according to the door lock signal and the status of the charging socket electronic lock. The second judgment module is used to determine whether the electronic lock of the charging socket is in a locked state if the connection state is not connected. If the state is locked, an unlocking command for the charging socket is issued. If the state is unlocked, no command is issued. The first judgment module includes a first judgment unit and a second judgment unit, wherein... The first judgment unit is used to determine whether the state of the charging socket electronic lock is locked when the door lock signal is locked. If it is locked, no instruction is issued; if it is not locked, an instruction to lock the charging socket is issued. The second judgment unit is used to determine whether the electronic lock of the charging socket is locked when the door lock signal is unlocked. If it is, it issues an unlock command for the charging socket; otherwise, it does not issue any command.

5. The AC / DC charging integrated socket electronic lock control device as described in claim 4, characterized in that, The door lock signal is obtained by the body control module judging the received remote key signal to determine the door lock status, and then sending the door lock signal to the vehicle controller so that the vehicle controller can convert and send the signal.

6. The AC / DC charging integrated socket electronic lock control device as described in claim 4, characterized in that, The first judgment module further includes a data acquisition unit, a first connection status judgment unit, and a second connection status judgment unit, wherein, The acquisition unit is used to obtain the resistance value of the detection point and determine the connection status between the electric vehicle and the charging gun based on the resistance value. The first connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is not connected if the resistance value is infinite. The second connection status determination unit is used to determine that the connection status between the electric vehicle and the charging gun is fully connected if the resistance value is a first preset value.

7. A computer device, characterized in that, include: Memory, used to store computer programs; A processor is configured to implement the AC / DC charging integrated socket electronic lock control method as described in any one of claims 1 to 3 when executing the computer program.

8. A storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the steps of the AC / DC charging integrated socket electronic lock control method as described in any one of claims 1 to 3.

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