Vehicle, control system and method thereof and computer readable storage medium

Abstract

The invention discloses a vehicle, a control system and method of the vehicle and a computer readable storage medium. The vehicle control system comprises the steps that a charging management circuit sends a first signal used for representing the connection state of a charging port and a charging gun to a controller; the control circuit is used for transmitting a second signal for representing the connection state of the charging port and the charging gun; when the controller does not receive the first signal within the first preset time, the controller receives a second signal transmitted by the control circuit and controls the running state of the vehicle based on the second signal; according to the invention, for the problem of possible failure of signal interaction between the charging management circuit and the controller, the control circuit with redundant arrangement can reduce the possibility of misjudgment or missed judgment of the connection state of the vehicle, so that the reliability of the vehicle during charging is improved.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application is based on the Chinese patent application with application number 202411051492.7 and application date August 1, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0002] The present invention relates to the field of vehicle technology, and in particular to a vehicle and a control system, method and computer-readable storage medium thereof. Background Art

[0003] In the related art, when the vehicle is charging, if the charging management circuit fails, for example, when the communication between the charging relationship system and the controller fails, a signal interaction failure problem will occur, resulting in misjudgment or omission of the correctness of the successful connection between the vehicle's charging port and the charging gun, thereby affecting the safety of prohibited driving. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] To this end, one object of the present invention is to propose a vehicle control system, which targets possible failure problems in signal interaction between a charging management circuit and a controller. The redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0006] To this end, a second object of the present invention is to provide a vehicle control method.

[0007] To this end, a third object of the present invention is to provide a vehicle.

[0008] To this end, a fourth object of the present invention is to provide a computer-readable storage medium.

[0009] To this end, a fifth object of the present invention is to provide a computer program product.

[0010] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present invention proposes a vehicle system, which includes: a charging management circuit, which is connected to a charging port of a vehicle, and the charging management circuit interacts with a controller to send a first signal to the controller for characterizing the connection status between the charging port and the charging gun; a control circuit, which is connected to the charging port and is used to transmit a second signal for characterizing the connection status between the charging port and the charging gun; the controller is connected to both the charging management circuit and the control circuit, and when the first signal is not received within a first preset time, the controller receives the second signal transmitted by the control circuit and controls the operating status of the vehicle based on the second signal; the operating status includes prohibiting driving or allowing driving.

[0011] According to the vehicle control system of an embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit. The controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0012] In some embodiments, when the first signal is not received within the first preset time, receiving the second signal transmitted by the control circuit, and controlling the operating state of the vehicle based on the second signal includes: when the first signal is not received within the first preset time, receiving the second signal transmitted by the control circuit, and when the first signal is still not received within the second preset time, controlling the operating state of the vehicle based on the second signal.

[0013] In some embodiments, controlling the operating state of the vehicle based on the second signal includes: when the second signal indicates that the connection state between the charging port and the charging gun is connected, controlling the vehicle to be prohibited from driving; or, when the second signal is used to indicate that the connection state between the charging port and the charging gun is disconnected, controlling the vehicle to be allowed to drive.

[0014] In some embodiments, the controller is also used to: when the first signal is received within a first preset time, or when the first signal is not received within the first preset time and the first signal is received within a second preset time; control the operating state of the vehicle based on the first signal.

[0015] In some embodiments, controlling the operating state of the vehicle based on the first signal includes: when the first signal is used to represent that the connection state between the charging port and the charging gun is connected, controlling the vehicle to be prohibited from driving; or, when the first signal is used to represent that the connection state between the charging port and the charging gun is disconnected, controlling the vehicle to be allowed to drive.

[0016] In some embodiments, the charging management circuit is used to: when it is determined that the voltage value of the CC signal of the charging port is lower than a first preset voltage threshold, generate a first signal for characterizing the connection between the charging port and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port is higher than a second preset voltage threshold, generate a first signal for characterizing the disconnection between the charging port and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

[0017] In some embodiments, the control circuit is used to: when it is determined that the voltage value of the CC signal of the charging port is lower than a first preset voltage threshold, generate a second signal for characterizing the connection between the charging port and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port is higher than a second preset voltage threshold, generate a second signal for characterizing the disconnection between the charging port and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

[0018] In some embodiments, the charging port includes a DC charging port, the charging management circuit includes a battery management unit, and the battery management unit is connected to the DC charging port.

[0019] In some embodiments, the charging port includes an AC charging port, the charging management circuit includes an on-board charger, and the on-board charger is connected to the AC charging port.

[0020] In some embodiments, the controller is also used to: when it is determined that the charging port is connected to the charging gun and the vehicle speed is less than a preset speed, send a gear control instruction to the gear controller of the vehicle so that the gear controller switches the vehicle gear to a preset gear or maintains it at the preset gear, and control the gear controller not to respond to the gear shifting instruction until it is determined that the charging port is not connected to the charging gun.

[0021] In some embodiments, the controller is further used to: when it is determined that the charging port is not connected to the charging gun, control the display device of the vehicle to display a prompt message that allows driving.

[0022] In order to achieve the above-mentioned purpose, an embodiment of the second aspect of the present invention proposes a vehicle control method, which includes: when a first signal transmitted by a charging management circuit is not received within a first preset time, receiving a second signal transmitted by a control circuit; based on the second signal, controlling the operating state of the vehicle, the operating state including prohibiting driving or allowing driving.

[0023] According to the vehicle control method of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0024] In order to achieve the above-mentioned object, an embodiment of a third aspect of the present invention provides a vehicle, and the vehicle includes: the vehicle control system described in the above-mentioned embodiment.

[0025] According to the vehicle of the embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout occurs in the charging management circuit. The controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of the vehicle when charging.

[0026] In order to achieve the above-mentioned purpose, an embodiment of the fourth aspect of the present invention proposes a computer-readable storage medium, on which a vehicle control program is stored. When the vehicle control program is executed by a processor, the vehicle control method described in the above-mentioned embodiment is implemented.

[0027] According to the computer-readable storage medium of an embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0028] In order to achieve the above-mentioned purpose, an embodiment of the fifth aspect of the present invention proposes a computer program, which implements the vehicle control method described in the above-mentioned embodiment when executed by a processor.

[0029] According to the computer program of the embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is a structural block diagram of a vehicle control system according to an embodiment of the present invention; Figure 2 is a hardware connection diagram of a vehicle control system according to an embodiment of the present invention; Figure 3 is a hardware connection diagram of a vehicle control system according to another embodiment of the present invention; Figure 4 is a flow chart of a vehicle control method according to an embodiment of the present invention; Figure 5 is a flow chart of a vehicle control method according to a specific embodiment of the present invention; Figure 6 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.

[0032] Reference numerals: Vehicle control system-10; Charging port-1; charging management circuit-2; control circuit-3; controller-4; AC charging port - 11; DC charging port - 12; On-board charger-21; Battery management module-22; Vehicles - 11. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical contents of the embodiments of the present invention in more detail, the implementation of the embodiments of the present invention is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present invention. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0034] With the rapid development and popularization of vehicle technology, the vehicle charging system has become one of the key technologies in the vehicle field. In order to ensure the safety and effectiveness of the charging process, the communication between the vehicle and the charging pile and the control of the vehicle are crucial. However, the existing safety control logic mainly relies on hardware implementation, which is costly and has a single judgment logic, and cannot be compatible with different charging modes at the same time.

[0035] In the related art, since the vehicle has only one charging port, the vehicle control device can control the vehicle to prohibit driving when the vehicle is charging. However, when the vehicle has two different charging ports, such as a DC charging port and an AC charging port, it is impossible to simultaneously make compatible judgments on different chargings, and the protective measures of prohibiting driving cannot be taken when DC charging and / or AC charging are being performed at the same time.

[0036] Reference below Figure 1-Figure 3 A vehicle control system 10 according to an embodiment of the present invention will be described.

[0037] like Figure 1 As shown, the vehicle control system 10 of the embodiment of the present invention includes a charging management circuit 2, a control circuit 3 and a controller 4, wherein: The charging management circuit 2 is connected to the charging port 1 of the vehicle, and the charging management circuit 2 interacts with the controller 4 to send a first signal to the controller 4 for characterizing the connection status between the charging port 1 and the charging gun; the control circuit 3 is connected to the charging port 1 for transmitting a second signal for characterizing the connection status between the charging port 1 and the charging gun; the controller 4 is connected to both the charging management circuit 2 and the control circuit 3, and when the first signal is not received within the first preset time, the controller 4 receives the second signal transmitted by the control circuit 3, and controls the operating status of the vehicle based on the second signal; the operating status includes prohibiting driving or allowing driving.

[0038] In an embodiment, the time for communication between the charging management circuit 2 and the controller 4 is obtained. If the first signal transmitted by the charging management circuit 2 is not received within the first preset time, it is considered that the communication between the message of the charging management circuit 2 and the controller has timed out. At this time, it is determined that a delay failure occurs in the communication between the charging management circuit 2 and the controller 4. The controller 4 directly receives the second signal transmitted by the control circuit 3, and performs a doubly-verified verification on the connection status between the charging port 1 and the charging gun based on the second signal, so as to prohibit or allow the vehicle from driving according to the second signal. In view of the possible failure problem of signal interaction between the charging management circuit 2 and the controller 4, the control circuit 3 is set to facilitate the controller 4 to determine the connection status between the charging port 1 and the charging gun directly according to the second signal obtained from the charging port by the control circuit 3 without passing through the charging management circuit 2, so as to control the running status of the vehicle, thereby reducing the possibility of misjudgment or missed judgment, and thereby improving the reliability of vehicle charging.

[0039] When the charging port 1 is connected to the charging gun, if the driver starts the vehicle at this time, the charging port 1, the charging gun connection and the vehicle may be damaged. Therefore, the vehicle is prohibited from driving, for example, the vehicle's drive system (such as the motor, transmission, etc.) is locked so that it cannot change gears or move.

[0040] According to the vehicle control system 10 of an embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit 2, and the controller 4 determines the connection status between the charging port 1 and the charging gun according to the second signal directly obtained by the control circuit 3 from the charging port 1, and then controls the vehicle to prohibit or allow driving according to different connection states. In view of the possible failure problem of signal interaction between the charging management circuit 2 and the controller 4, the redundant control circuit 3 can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0041] In some embodiments, when the first signal is not received within the first preset time, receiving the second signal transmitted by the control circuit 3, and controlling the operating state of the vehicle based on the second signal includes: when the first signal is not received within the first preset time, receiving the second signal transmitted by the control circuit 3, and when the first signal is still not received within the second preset time, controlling the operating state of the vehicle based on the second signal.

[0042] In an embodiment, if the first signal transmitted by the charging management circuit 2 is not received within the first preset time, it is considered that the communication between the message of the charging management circuit 2 and the controller has timed out, and the charging management circuit 2 cannot quickly and effectively transmit information to the controller 4, resulting in obvious delays or communication failures. At this time, it is determined that the charging management circuit 2 cannot work normally, and the controller 4 directly receives the second signal transmitted by the control circuit 3. If the first signal transmitted by the charging management circuit 2 is still not received within the second preset time T1, it is considered that the communication between the message of the charging management circuit 2 and the controller 4 has not been restored. The controller 4 directly controls the operating status of the vehicle according to the second signal transmitted by the control circuit 3. That is, redundant design is performed for possible failures caused by signal interaction problems to avoid errors or inability to judge the charging status of the vehicle when signal interaction fails.

[0043] In some embodiments, controlling the operating status of the vehicle based on the second signal includes: when the second signal indicates that the connection status between the charging port 1 and the charging gun is connected, controlling the vehicle to be prohibited from driving; or, when the second signal is used to indicate that the connection status between the charging port 1 and the charging gun is disconnected, controlling the vehicle to be allowed to drive.

[0044] In an embodiment, after the controller 4 receives the second signal directly transmitted by the control circuit 3, when the second signal exceeds the second signal threshold for a certain period of time, the controller 4 determines that the connection status between the charging port 1 and the charging gun is connected, and then controls the vehicle to be prohibited from driving, thereby improving the reliability of the vehicle during charging.

[0045] Alternatively, when the second signal exceeds the second signal threshold for less than a certain period of time, the controller 4 determines that the connection state between the charging port 1 and the charging gun is disconnected, and then controls the vehicle to allow driving, wherein the second signal threshold and duration can be set according to the battery specifications and charging efficiency.

[0046] In some embodiments, the controller 4 is also used to: when the first signal is received within a first preset time, or when the first signal is not received within the first preset time and the first signal is received within a second preset time; control the operating state of the vehicle based on the first signal.

[0047] In an embodiment, if a first signal transmitted by the charging management circuit 2 is received within a first preset time, it is considered that the communication between the message of the charging management circuit 2 and the controller has not timed out, and the charging management circuit 2 can quickly and effectively transmit information to the controller 4 without obvious delays or communication failures. At this time, it is determined that the charging management circuit 2 can operate normally, and the controller 4 controls the operating status of the vehicle according to the first signal transmitted by the charging management circuit 2.

[0048] Or when the first signal transmitted by the charging management circuit 2 is not received within the first preset time, and the first signal is received within the second preset time T1, it is considered that the communication between the message of the charging management circuit 2 and the controller 4 has returned to normal. At this time, it is determined that the charging management circuit 2 can work normally, and the controller 4 controls the operating status of the vehicle according to the first signal transmitted by the charging management circuit 2. The first preset time and the second preset time can be set according to actual test data.

[0049] In some embodiments, controlling the operating state of the vehicle based on the first signal includes: when the first signal is used to represent that the connection state between the charging port 1 and the charging gun is connected, controlling the vehicle to be prohibited from driving; or, when the first signal is used to represent that the connection state between the charging port 1 and the charging gun is disconnected, controlling the vehicle to be allowed to drive.

[0050] In an embodiment, after the controller 4 receives the first signal transmitted by the charging management circuit 2, when the first signal exceeds the first signal threshold for a certain period of time, the controller 4 determines that the connection status between the charging port 1 and the charging gun is connected, and then controls the vehicle to be prohibited from driving, thereby improving the reliability of the vehicle charging.

[0051] Alternatively, when the first signal exceeds the first signal threshold for a certain period of time, the controller 4 determines that the connection state between the charging port 1 and the charging gun is disconnected, and then controls the vehicle to allow driving, wherein the first signal threshold and duration can be set according to the battery specifications and charging efficiency.

[0052] In some embodiments, the charging management circuit 2 is used to: when it is determined that the voltage value of the CC signal of the charging port 1 is lower than a first preset voltage threshold, generate a first signal for characterizing the connection between the charging port 1 and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port 1 is higher than a second preset voltage threshold, generate a first signal for characterizing the disconnection between the charging port 1 and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

[0053] In the embodiment, since the CC signal of the charging port 1 always exists, the connection state or the disconnected state can be judged according to the voltage value of the CC signal. When the voltage value of the CC signal is lower than the first preset voltage threshold, it is considered that the charging port 1 is connected to the charging gun, and the charging management circuit 2 generates a first connection signal; when the voltage of the CC signal is higher than the first preset voltage threshold, it is considered that the charging port 1 is not connected to the charging gun, and the charging management circuit 2 generates a first disconnected signal.

[0054] In some embodiments, the control circuit 3 is used to: when it is determined that the voltage value of the CC signal of the charging port 1 is lower than the first preset voltage threshold, generate a second signal for characterizing the connection between the charging port 1 and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port 1 is higher than the second preset voltage threshold, generate a second signal for characterizing the disconnection between the charging port 1 and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

[0055] In an embodiment, when the voltage value of the CC signal is lower than the first preset voltage threshold, it is considered that the charging port 1 is connected to the charging gun, and the control circuit 3 generates a second connected signal; when the voltage of the CC signal is higher than the first preset voltage threshold, it is considered that the charging port 1 is not connected to the charging gun, and the control circuit 3 generates a second unconnected signal.

[0056] In some embodiments, Figure 2 and Figure 3 As shown, the charging port 1 includes a DC charging port 12, which outputs an AC charging signal. The charging management circuit 2 includes a battery management unit 22, which is connected to the DC charging port 12. Figure 2 As shown, the battery management unit 22 and the controller 4 can communicate with each other through a communication protocol such as a controller area network (CAN), or as shown in FIG. Figure 3 As shown, information communication can be performed between the battery management unit 22 and the controller 4 through hardware.

[0057] In some embodiments, Figure 2 and Figure 3 As shown, the charging port 1 includes an AC charging port 11, which outputs a DC charging signal. The charging management circuit 2 includes an on-board charger 21, which is connected to the AC charging port 11. Figure 2 As shown, the on-board charger 21 and the controller 4 can communicate information via a communication protocol such as a controller area network bus, or as shown in FIG. Figure 3 As shown, the vehicle charger 21 and the controller 4 can communicate information through hardware. In addition, in different vehicle charging scenarios, the charging signal can also be determined according to the charging environment or charging speed.

[0058] In some embodiments, the controller 4 is also used to: when it is determined that the charging port 1 is connected to the charging gun and the vehicle speed is less than a preset speed, send a gear control instruction to the vehicle's gear controller to enable the gear controller to switch the vehicle gear to a preset gear or maintain it at a preset gear, and control the gear controller not to respond to the gear shifting instruction until it is determined that the charging port 1 is not connected to the charging gun.

[0059] In the embodiment, when it is determined that the charging port 1 is connected to the charging gun, it is considered that the vehicle and the charging gun have been successfully connected. The controller obtains the vehicle speed through the vehicle speed sensor of the vehicle. When the vehicle speed is less than the preset speed threshold, the controller 4 sends a gear control instruction to the gear controller through CAN communication. Since the gear controller obtains the vehicle power gear information sent by the left domain controller of the vehicle, including but not limited to OFF (off), ON (on), START (start) and P (parking), if the current power gear of the vehicle is in the ON gear, it is considered that the vehicle is powered on successfully and the vehicle is in a drivable state, then the gear control module switches the vehicle gear to the preset gear P gear, and controls the gear controller not to respond to the gear shift instruction, that is, after the driver starts the vehicle and starts driving, the P gear is immediately engaged and maintained in the P gear when the vehicle speed is low to prohibit the vehicle from driving, wherein the preset vehicle speed threshold and the preset gear can be set according to actual conditions; if the current power gear of the vehicle is in the preset gear P gear, the gear controller maintains the preset gear P gear, and controls the gear controller not to respond to the gear shift instruction, so that the vehicle remains in a non-drivable state.

[0060] Furthermore, the vehicle's power gear can be controlled to remain in the ON gear during the charging process to meet the needs of powering up the vehicle when charging in different charging modes, thereby improving the comfort and experience of users resting in the car while charging.

[0061] In some embodiments, the controller 4 is further used to: when it is determined that the charging port 1 is not connected to the charging gun, control the display device of the vehicle to display a prompt message that allows driving.

[0062] In an embodiment, when it is determined that the charging port 1 is not connected to the charging gun, the controller 4 can send a control instruction to the display device via CAN communication to control the display device to display a prompt message allowing driving, including but not limited to an error code, text prompt or flashing indicator light indicating a failed charging connection, etc. Similarly, when it is determined that the charging port 1 is connected to the charging gun, in order to avoid the display device issuing unnecessary prompt messages to disturb the user when the vehicle is in a prohibited driving state and is charging, the controller 4 can send a control instruction to the display device via CAN communication to prohibit the display device from displaying prompt messages, for example, the instrument's Ready / OK light can be prohibited from being displayed.

[0063] According to the vehicle control system 10 of an embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit 2, and the controller 4 determines the connection status between the charging port 1 and the charging gun according to the second signal directly obtained by the control circuit 3 from the charging port 1, and then controls the vehicle to prohibit or allow driving according to different connection states. In view of the possible failure problem of signal interaction between the charging management circuit 2 and the controller 4, the redundant control circuit 3 can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0064] Combine the following Figure 4 The vehicle control method according to the embodiment of the present invention is illustrated by way of example. The vehicle includes a charging management circuit and a control circuit.

[0065] like Figure 4 As shown, the vehicle control method of the embodiment of the present invention at least includes steps S1 and S2.

[0066] Step S1, receiving a second signal transmitted by the control circuit when the first signal transmitted by the charging management circuit is not received within a first preset time.

[0067] In an embodiment, the communication time of the charging management circuit is obtained. If the first signal transmitted by the charging management circuit is not received within the first preset time, it is considered that the communication between the message of the charging management circuit and the controller has timed out. At this time, it is determined that a delay failure has occurred in the communication between the charging management circuit and the controller, and the controller directly receives the second signal transmitted by the control circuit.

[0068] Step S2, controlling the running state of the vehicle based on the second signal, the running state including prohibiting driving or allowing driving.

[0069] In an embodiment, double verification is performed based on the second signal to control the operating status of the vehicle, wherein the operating status includes prohibiting driving or allowing driving. In order to address the possible failure problem of signal interaction between the charging management circuit and the controller, a control circuit is set to facilitate the controller to determine the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port without passing through the charging management circuit, so as to control the operating status of the vehicle, thereby reducing the possibility of misjudgment or missed judgment, and thereby improving the reliability of vehicle charging.

[0070] According to the vehicle control method of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0071] Reference below Figure 5 The vehicle control method according to the embodiment of the present invention is described with examples.

[0072] like Figure 5 As shown, the vehicle control method of the embodiment of the present invention at least includes steps S11 to S21.

[0073] Step S11, when it is determined that the voltage value of the CC signal of the charging port is lower than the first preset voltage threshold, a first signal is generated to characterize the connection between the charging port and the charging gun, or, when it is determined that the voltage value of the CC signal of the charging port is higher than the second preset voltage threshold, a first signal is generated to characterize the disconnection between the charging port and the charging gun.

[0074] Step S12, when it is determined that the voltage value of the CC signal of the charging port is lower than the first preset voltage threshold, a second signal is generated to characterize the connection between the charging port and the charging gun, or, when it is determined that the voltage value of the CC signal of the charging port is higher than the second preset voltage threshold, a second signal is generated to characterize the disconnection between the charging port and the charging gun.

[0075] Step S13, determining whether the first signal is received within the first preset time, if so, executing step S19; otherwise, executing step S14.

[0076] Step S14, receiving a second signal transmitted by the control circuit.

[0077] Step S15, determining whether the first signal is received within the second preset time, if so, executing step S19; otherwise, executing step S16.

[0078] Step S16, determining whether the second signal represents the connection status between the charging port and the charging gun is connected, if so, executing step S17; otherwise, executing step S18.

[0079] Step S17, controlling the vehicle to prohibit driving.

[0080] Step S18, controlling the vehicle to allow driving.

[0081] Step S19, determining whether the connection status between the charging port and the charging gun represented by the first signal is connected, if so, executing step S20; otherwise, executing step S21.

[0082] Step S20, controlling the vehicle to prohibit driving.

[0083] Step S21, controlling the vehicle to allow driving.

[0084] According to the vehicle control method of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0085] Reference below Figure 6 A vehicle 11 according to an embodiment of the present invention will be described.

[0086] like Figure 6 As shown, a vehicle 11 according to an embodiment of the present invention includes the vehicle control system 10 according to the above embodiment.

[0087] According to the vehicle 11 of the embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout occurs in the charging management circuit. The controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0088] The following describes a computer-readable storage medium according to an embodiment of the present invention.

[0089] A vehicle control program is stored on a computer-readable storage medium in an embodiment of the present invention. When the vehicle control program is executed by a processor, the vehicle control method of the above embodiment is implemented.

[0090] According to the computer-readable storage medium of an embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0091] The following describes a computer program product according to an embodiment of the present invention.

[0092] The computer program product of the embodiment of the present invention includes a computer program, and when the computer program is executed by a processor, the vehicle control method of the above embodiment is implemented.

[0093] According to the computer program of the embodiment of the present invention, when the first signal is not received within the first preset time, it is determined that a communication timeout failure occurs in the charging management circuit, and the controller determines the connection status between the charging port and the charging gun based on the second signal directly obtained by the control circuit from the charging port, and then controls the vehicle to prohibit or allow driving according to different connection statuses. In response to possible failure problems in the signal interaction between the charging management circuit and the controller, the redundant control circuit can reduce the possibility of misjudgment or omission of the vehicle connection status, thereby improving the reliability of vehicle charging.

[0094] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0095] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle control system, characterized in that: include: A charging management circuit, the charging management circuit is connected to a charging port of the vehicle, and the charging management circuit interacts with a controller to send a first signal to the controller for indicating a connection state between the charging port and a charging gun; A control circuit, the control circuit being connected to the charging port and configured to transmit a second signal for indicating a connection state between the charging port and the charging gun; The controller is connected to both the charging management circuit and the control circuit. When the first signal is not received within a first preset time, the controller receives the second signal transmitted by the control circuit and controls the operating state of the vehicle based on the second signal; the operating state includes prohibiting driving or allowing driving.

2. The vehicle control system according to claim 1, characterized in that: When the first signal is not received within the first preset time, receiving the second signal transmitted by the control circuit, and controlling the running state of the vehicle based on the second signal includes: When the first signal is not received within the first preset time, the second signal transmitted by the control circuit is received, and when the first signal is still not received within the second preset time, the operating state of the vehicle is controlled based on the second signal.

3. The vehicle control system according to claim 2, characterized in that: The controlling the running state of the vehicle based on the second signal comprises: When the second signal indicates that the connection state between the charging port and the charging gun is connected, the vehicle is controlled to be prohibited from driving; or, When the second signal is used to indicate that the connection state between the charging port and the charging gun is disconnected, the vehicle is controlled to be allowed to travel.

4. The vehicle control system according to claim 1, characterized in that: The controller is also used to: when the first signal is received within a first preset time, or when the first signal is not received within the first preset time and the first signal is received within a second preset time; control the operating state of the vehicle based on the first signal.

5. The vehicle control system according to claim 4, characterized in that: The controlling the running state of the vehicle based on the first signal comprises: When the first signal is used to indicate that the connection state between the charging port and the charging gun is connected, the vehicle is controlled to be prohibited from driving; or, When the first signal is used to indicate that the connection state between the charging port and the charging gun is disconnected, the vehicle is controlled to be allowed to travel.

6. The vehicle control system according to claim 1, characterized in that: The charging management circuit is used for: When it is determined that the voltage value of the CC signal of the charging port is lower than a first preset voltage threshold, a first signal is generated to characterize the connection between the charging port and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port is higher than a second preset voltage threshold, a first signal is generated to characterize the disconnection between the charging port and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

7. The vehicle control system according to claim 1, characterized in that: The control circuit is used to: when it is determined that the voltage value of the CC signal of the charging port is lower than a first preset voltage threshold, generate a second signal for characterizing the connection between the charging port and the charging gun; or, when it is determined that the voltage value of the CC signal of the charging port is higher than a second preset voltage threshold, generate a second signal for characterizing the disconnection between the charging port and the charging gun, and the first voltage threshold is lower than the second voltage threshold.

8. The vehicle control system according to claim 1, characterized in that: The charging port includes a DC charging port, and the charging management circuit includes a battery management unit, which is connected to the DC charging port.

9. The vehicle control system according to claim 1 or 8, characterized in that: The charging port includes an AC charging port, and the charging management circuit includes an on-board charger, which is connected to the AC charging port.

10. The vehicle control system according to claim 1, characterized in that: The controller is also used to: when it is determined that the charging port is connected to the charging gun and the vehicle speed is less than a preset speed, send a gear control instruction to the gear controller of the vehicle so that the gear controller switches the vehicle gear to a preset gear or maintains it at the preset gear, and control the gear controller not to respond to the gear shifting instruction until it is determined that the charging port is not connected to the charging gun.

11. The vehicle control system according to claim 1, characterized in that: The controller is also used to: when it is determined that the charging port is not connected to the charging gun, control the display device of the vehicle to display a prompt message that allows driving.

12. A vehicle control method, characterized in that: For a vehicle control system according to any one of claims 1 to 11, the control method comprises: When the first signal transmitted by the charging management circuit is not received within the first preset time, receiving the second signal transmitted by the control circuit; The operating state of the vehicle is controlled based on the second signal, and the operating state includes prohibiting driving or allowing driving.

13. A vehicle, characterized in that: include: A vehicle control system as claimed in any one of claims 1 to 11.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a vehicle control program, and when the vehicle control program is executed by the processor, the vehicle control method as claimed in claim 12 is implemented. 15 . A computer program product, comprising a computer program, wherein the computer program implements the vehicle control method according to claim 12 when executed by a processor.

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