Control circuit, control method, and vehicle

Abstract

The present application discloses a control circuit, a control method and a vehicle. The control method includes: obtaining a manual switch signal of the upper body; when the manual switch signal of the upper body is an on signal, confirming the vehicle state; based on different vehicle states and the adhesion detection results of the upper body negative contactor of the vehicle, executing the corresponding upper body power-on process, the upper body negative contactor is connected to the upper body of the vehicle and one end of the main negative relay; when the manual switch signal of the upper body is an off signal, executing the upper body power-off process. In this way, by setting the upper body negative contactor, the vehicle controller controls the execution of the corresponding upper body power-on and power-off processes based on the manual switch signal of the upper body and the adhesion detection result, so that the upper body can be turned on or off based on the manual control of the user and the upper body development process can be monitored.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a control circuit, a control method and a vehicle. Background Art

[0002] More and more users want to be able to manually open or close the vehicle's bodywork while using it. However, existing manual controls for bodywork lack process monitoring and have simple control logic. Therefore, improving solutions for opening or closing vehicle bodywork based on user manual control signals has become an unresolved issue. Summary of the Invention

[0003] Embodiments of the present application provide a control circuit, a control method, and a vehicle.

[0004] The control method of the embodiment of the present application includes:

[0005] Get the upper body manual switch signal;

[0006] When the body manual switch signal is an on signal, confirming the vehicle status;

[0007] Based on different vehicle states and adhesion detection results of the vehicle's upper body negative contactor, executing a corresponding upper body power-on process, the upper body negative contactor is connected to the vehicle's upper body and one end of the main negative relay;

[0008] When the manual installation switch signal is an off signal, the installation power-off process is executed.

[0009] In this way, by executing the upper-mounted power-on process or the upper-mounted power-off process based on the upper-mounted manual switch signal, the upper-mounted power-on or power-off process can be turned on or off based on the user's manual control; in addition, the vehicle status is first confirmed based on the start signal, and then the corresponding upper-mounted power-on process is executed based on different vehicle statuses, so that the logic of the upper-mounted power-on is perfect.

[0010] In some embodiments, executing corresponding installation and power-on processes based on different vehicle states includes:

[0011] When receiving the on-state manual switch signal and confirming that the vehicle is in a low-voltage power-on state, detecting whether the bodywork negative contactor is stuck;

[0012] When the upper negative contactor is stuck, controlling the display of sticking information on the instrument panel of the vehicle;

[0013] In the case that the bodywork negative contactor is not stuck, after the bodywork controller of the vehicle is activated and the bodywork negative contactor is closed, the vehicle is controlled to execute a high-voltage power-on process.

[0014] In some embodiments, executing corresponding installation and power-on processes based on different vehicle states includes:

[0015] When receiving the upper manual switch signal as an on signal and confirming that the vehicle is in a driving state, controlling the vehicle to execute a vehicle power-off process;

[0016] When confirming that the vehicle remains in a power-off state for a predetermined time, detecting whether a bodywork negative contactor of the vehicle is adhered, the bodywork negative contactor being connected to the bodywork of the vehicle and one end of the main negative relay;

[0017] When the upper negative contactor is stuck, controlling the display of sticking information on the instrument panel of the vehicle;

[0018] In the case that the bodywork negative contactor is not stuck, after the bodywork controller of the vehicle is activated and the bodywork negative contactor is closed, the vehicle is controlled to execute a high-voltage power-on process.

[0019] In some embodiments, executing corresponding installation and power-on processes based on different vehicle states includes:

[0020] When receiving the upper body manual switch signal as an on signal and confirming that the vehicle is in a charging state, ensuring that the vehicle does not execute the upper body power-on process and recording the on signal;

[0021] Based on the start signal, when the vehicle is powered on for the first time after the charging state is completed, a prompt message is controlled to be displayed on the dashboard of the vehicle to remind the user to resume control of the upper body manual switch.

[0022] In some embodiments, when the received manual switch signal is an off signal, executing the power-off process includes:

[0023] Control the power of the upper body when it drops;

[0024] When the upper load power drops to less than a preset power or the power drop duration is longer than a preset duration, controlling to disconnect the upper load negative contactor;

[0025] detecting voltages at both ends of the upper device;

[0026] When the voltage across the bodywork is less than a first preset voltage, confirming that the bodywork negative contactor is not adhered and controlling the vehicle instrument panel to display bodywork disconnection information for a certain period of time; or

[0027] When the voltage across the bodywork is greater than a second preset voltage, it is confirmed that the bodywork negative contactor is stuck and the instrument panel is controlled to continuously display sticking information.

[0028] In some embodiments, the vehicle includes an insulation detection module, and the control method includes:

[0029] Obtaining an insulation fault signal fed back by the insulation detection module, and executing the installation and power-off process based on the insulation fault signal;

[0030] When it is confirmed that the upper body negative contactor is not adhered, the insulation detection module is controlled to determine again whether there is an insulation fault. When it is confirmed that there is an insulation fault again, the instrument panel is controlled to display insulation fault information and execute the vehicle power-off process. When it is confirmed that there is no insulation fault again, the instrument panel is controlled to continue to display the upper body insulation fault information and maintain the driving function of the vehicle.

[0031] When it is confirmed that the upper negative contactor is adhered, the instrument panel is controlled to continuously display insulation fault information and the vehicle power-off process is executed.

[0032] In some embodiments, the vehicle includes a bodywork controller, and the control method further includes:

[0033] An upper installation fault signal fed back by the upper installation controller is obtained, and the upper installation power-off process is executed based on the upper installation fault signal.

[0034] In certain embodiments, the control method comprises:

[0035] When at least two signals, namely, the shutdown signal, the insulation fault signal, and the loading fault signal, are obtained, the loading fault signal is given the highest priority and the insulation fault signal is given the lowest priority, and the loading and power-off process is controlled to be executed.

[0036] The control circuit of the embodiment of the present application includes a main positive relay connected to the positive side of a power supply; a main negative relay connected to the negative side of the power supply; a pre-charging circuit connected to both ends of the main positive relay for pre-charging the vehicle before executing the upper load power-on process; and an upper load negative contactor and a vehicle controller, the upper load negative contactor being connected to the upper load of the vehicle and one end of the main negative relay, and the vehicle controller being connected to the pre-charging circuit and the upper load negative contactor;

[0037] The method includes receiving a manual upper load switch signal, performing adhesion detection on the upper load negative contactor, and executing the corresponding upper load power-on process or upper load power-off process according to the manual upper load switch signal and the adhesion detection result.

[0038] An embodiment of the present application provides a vehicle, including a body manual switch for generating a body manual switch signal; a body controller for feeding back a body fault signal; an insulation detection module for feeding back an insulation fault signal; and a vehicle controller, wherein the vehicle controller is connected to the body manual switch, the body controller and the insulation detection module, for implementing the control method provided in the present application.

[0039] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0041] Figure 1 is a schematic diagram of the connection of hardware modules of a vehicle in an embodiment of the present application;

[0042] Figure 2 Schematic diagram of the high-voltage principle of the control method in the embodiment of the present application;

[0043] Figure 3 It is a flow chart of the control method in the embodiment of the present application;

[0044] Figure 4 It is a flow chart of the control method in the embodiment of the present application;

[0045] Figure 5 It is a flow chart of the control method in the embodiment of the present application;

[0046] Figure 6 It is a flow chart of the control method in the embodiment of the present application;

[0047] Figure 7 It is a flow chart of the control method in the embodiment of the present application;

[0048] Figure 8 It is a flow chart of the control method in the embodiment of the present application;

[0049] Figure 9 It is a flow chart of the control method in the embodiment of the present application.

[0050] Description of main component symbols:

[0051] Vehicle 100, body manual switch 11, body controller 12, insulation detection module 13, instrument panel 14, vehicle controller 15, control device 200, acquisition module 21, confirmation module 22, first execution module 23, second execution module 24, control circuit 300, pre-charge relay S0, main positive relay S1, main negative relay S2, and body negative contactor S3. DETAILED DESCRIPTION

[0052] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0053] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0055] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0056] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0057] See also Figure 1 The present application provides a vehicle 100, which includes a body manual switch 11, a body controller 12, an insulation detection module 13 and a vehicle controller 15 connected to the above. Figure 1 FIG1 is a schematic diagram of the hardware module connection of the vehicle 100. It is understood that in other embodiments, the vehicle 100 may further include an instrument panel 14 for displaying information, which is used to display different information according to different situations to prompt the driver of the specific status of the vehicle 100. Figure 1 The double solid lines in the CAN bus represent the CAN line connection between the hardware, and the single solid line represents the hard-wire connection between the hardware.

[0058] See also Figure 2 , Figure 2The control circuit 300 of the vehicle 100 in the present application is shown, that is, the high-voltage principle diagram of the upper load and lower power. The control circuit 300 provided in the present application includes a main positive relay S1 connected to the positive side of the power supply, a main negative relay S2 connected to the negative side of the power supply, a pre-charging circuit for realizing the pre-charging of the vehicle before executing the upper load power-up process at both ends of the main positive relay S1, a top load negative contactor S3 connected to one end of the vehicle 100 and the main negative relay S2, and a whole vehicle controller 15 connected to the pre-charging circuit and the upper load negative contactor S3; the whole vehicle controller 15 is used to receive a manual switch signal, perform adhesion detection on the upper load negative contactor S3, and execute the corresponding upper load power-up process or the upper load power-down process according to the manual switch signal and the adhesion detection result.

[0059] In this way, by setting the upper body negative contactor S3, the vehicle controller 15 controls the execution of the corresponding upper body power on and off process based on the upper body manual switch signal and the adhesion detection result, so that the upper body can be turned on or off based on the user's manual control and the upper body development process can be monitored.

[0060] The vehicle 100 in the present application has a top-mounted pre-charging function. Compared with many existing top-mounted pre-charging solutions that require the addition of a complete set of pre-charging circuits (including additional pre-charging resistors, pre-charging relays and top-mounted contactors), which leads to increased costs and serious occupation of vehicle space, the present application only adds one top-mounted negative contactor S3 to achieve the top-mounted pre-charging of the vehicle 100. At the same time, combined with the top-mounted power-on and power-off logic in the control circuit 300 in the present application, the vehicle controller 15 uses the adhesion detection results of the top-mounted negative contactor S3 and the processing of the top-mounted manual switch signal to achieve the top-mounted pre-charging function while monitoring and providing status feedback on the top-mounted power-on and power-off process.

[0061] See also Figure 3 , the embodiment of the present application provides a control method, the control method comprising the following steps:

[0062] S10: Get the upper body manual switch signal;

[0063] S20: When the body manual switch signal is an on signal, confirm the vehicle status;

[0064] S30: executing a corresponding bodywork power-on process based on different vehicle states and the adhesion detection result of the bodywork negative contactor S3 of the vehicle;

[0065] S40: When the upper installation manual switch signal is an off signal, the upper installation power-off process is executed.

[0066] In this way, the control method realizes the execution of the upper-mounted power-on process or the upper-mounted power-off process based on the upper-mounted manual switch signal and the adhesion detection result of the upper-mounted negative contactor S3. The upper-mounted power-on or power-off process can be turned on or off based on the manual control of the user and the upper-mounted power-on and power-off process can be monitored. In addition, the vehicle status is first confirmed based on the start signal, and then the corresponding upper-mounted power-on process is executed based on different vehicle statuses, so that the logic of the upper-mounted power-on is perfect.

[0067] Please refer again Figure 1 The embodiment of the present application provides a vehicle 100, which includes a top-mounted manual switch 11, a top-mounted controller 12, an insulation detection module 13, and a control circuit 300 provided in the present application, wherein the top-mounted manual switch 11 is used to generate a top-mounted manual switch signal; the top-mounted controller 12 is used to feedback a top-mounted fault signal; the insulation detection module 13 is used to feedback an insulation fault signal; and the vehicle controller 15 is connected to the top-mounted manual switch 11, the top-mounted controller 12, and the insulation detection module 15 to implement the control method provided in the present application. Specifically, the vehicle controller 15 is used to obtain the top-mounted manual switch signal; and is used to confirm the vehicle state when the top-mounted manual switch signal is an on signal; and is used to execute the corresponding top-mounted power-on process based on different vehicle states and the adhesion detection result of the vehicle's top-mounted negative contactor S3; and is used to execute the top-mounted power-off process when the top-mounted manual switch signal is a off signal.

[0068] It should be noted that existing bodywork pre-charging often requires the addition of a complete pre-charging circuit (pre-charging resistor, pre-charging contactor, and bodywork contactor), which increases costs and takes up space on the vehicle. Furthermore, the logic for manually controlling the bodywork switches is relatively simple, making it impossible to monitor process issues.

[0069] In view of this, the present application provides a control circuit and a control method to perform complete logical control on the power-on and power-off processes of the upper device.

[0070] Specifically, if Figure 2 As shown, in one embodiment, the vehicle 100 can be an electric vehicle, and the vehicle 100 is equipped with a control circuit 300, wherein the main positive relay S1 is the main relay on the positive side of the high-voltage system, and the main negative relay S2 is the main relay on the negative side of the high-voltage system. The pre-charging circuit is connected to both ends of the main positive relay S1, which can be used to reduce the impact current when the vehicle 100 is powered on, and protect the motor controller, battery, main positive relay and main negative relay, etc.

[0071] The upper body negative contactor S3 is connected to the upper body of the vehicle 100 and to one end of the main negative relay S2. The setting of the upper body negative contactor S3 can realize the pre-charging of the upper body. It can be understood that if the control circuit 100 is not provided with the upper body negative contactor S3, the upper body cannot be disconnected without disconnecting the power supply of the upper body, and the upper body can only be turned on during the power-on process of the entire vehicle, and the function of turning on the upper body after the entire vehicle is powered on cannot be realized. In addition, the addition of the upper body negative contactor S3 can solve the problem of the simple logic of the current manual control of the upper body switch, and the adhesion detection result of the upper body negative contactor by the vehicle controller 15 can be used to monitor the upper body development process.

[0072] In addition, the vehicle 100 in the present application also includes a dashboard 14, which can display corresponding prompt information on the dashboard when problems occur in the vehicle 100, such as insulation failure, upper insulation failure, adhesion of the upper negative contactor S3, etc., to prompt the driver, so as to discover and solve the problem as soon as possible.

[0073] Furthermore, in step S10-step S40, the upper-mounted manual switch signal is generated by the user operating the upper-mounted manual switch 11 of the vehicle 100 and is acquired by the vehicle controller 15; when the acquired signal is an on signal, the vehicle controller 15 first confirms the vehicle status, such as whether the vehicle 100 is charging, driving, or being powered on, and then executes the corresponding upper-mounted power-on process based on different vehicle states and the adhesion detection result of the upper-mounted negative contactor S3 of the vehicle 100; when the acquired signal is an off signal, the vehicle controller 15 can execute the upper-mounted power-off process, thereby completing the power on and off of the vehicle upper-mounted according to the user's manual operation.

[0074] See also Figure 2 In some embodiments, the pre-charge circuit includes a pre-charge resistor and a pre-charge relay S0. The pre-charge relay S0 is connected in series with the pre-charge resistor and connected to both ends of the main positive relay S1 to form a parallel circuit. Specifically, the pre-charge relay S0 controls the opening and closing of the pre-charge circuit, that is, before the main relay operates, it can be connected to the pre-charge circuit for self-test. The pre-charge resistor acts as a protective resistor and has a current-limiting function, which can effectively prevent the high current at the moment of power-on from damaging other electronic components in the high-voltage system.

[0075] See also Figure 2 and Figure 4In some embodiments, the vehicle controller 15 is used to detect whether the upper-mounted negative contactor S3 is stuck when receiving a signal from the upper-mounted manual switch as an on signal and confirming that the vehicle 100 is in a low-voltage power-on state, and to control the display of adhesion information on the instrument panel 14 of the vehicle 100 when the upper-mounted negative contactor S3 is stuck, and to control the vehicle 100 to execute the high-voltage power-on process after activating the upper-mounted controller 12 of the vehicle 100 and closing the upper-mounted negative contactor S3 when the upper-mounted negative contactor S3 is not stuck.

[0076] In some embodiments, based on different vehicle states and the adhesion detection result of the bodywork negative contactor S3 of the vehicle 100, a corresponding bodywork power-on process (S30) is executed, including the steps of:

[0077] S31: When receiving the on-state manual switch signal and confirming that the vehicle is in a low-voltage power-on state, detecting whether the bodywork negative contactor S3 of the vehicle 100 is stuck;

[0078] S32: When the upper negative contactor S3 is stuck, control the display of sticking information on the instrument panel 14 of the vehicle 100;

[0079] S33: When the bodywork negative contactor S3 is not stuck, the bodywork controller 12 of the vehicle 100 is activated and the bodywork negative contactor S3 is closed to control the vehicle 100 to execute the high-voltage power-on process.

[0080] In this way, the logic of controlling the power-on of the upper body is perfect and the process is clear. Displaying specific information on the instrument panel 14 also facilitates process monitoring and helps the driver to deal with related problems in a timely manner.

[0081] Specifically, the adhesion detection process of the upper negative contactor S3 is first introduced. First, the main negative relay S2 is closed. After confirming that S2 is closed, the voltage between the voltage detection point 2 and the voltage detection point 7 is detected. If the voltage is greater than a certain value, such as greater than 20% of the bus voltage, the upper negative contactor S3 is considered to be adhered, otherwise it is considered that the upper negative contactor S3 is disconnected.

[0082] If the upper negative contactor S3 is stuck, the vehicle controller 15 controls the display of a sticking message on the dashboard 14 of the vehicle 100 to prompt the driver to take timely action. If the upper negative contactor S3 is not stuck, the vehicle controller 15 activates the upper controller 12 of the vehicle 100 and closes the upper negative contactor S3, thereby controlling the vehicle 100 to execute the high-voltage power-up process.

[0083] The high-voltage power-up process involves closing the main positive relay S1 and then opening the pre-charge relay S0 after pre-charging is complete. Pre-charging not only refers to pre-charging of the original vehicle components but also includes pre-charging of the upper components. Pre-charging is considered complete when the voltage across the upper components exceeds a certain value, such as 90% of the bus voltage.

[0084] See also Figure 2 and Figure 5 In some embodiments, the vehicle controller 15 is used to control the vehicle 100 to execute the vehicle power-off process when receiving the upper-mounted manual switch signal as an on signal and confirming that the vehicle 100 is in the driving state, and is used to detect whether the upper-mounted negative contactor S3 is stuck when confirming that the vehicle 100 remains in the power-off state for a predetermined period of time, and is used to control the display of the adhesion information on the instrument panel 14 of the vehicle 100 when the upper-mounted negative contactor S3 is stuck, and is used to activate the upper-mounted controller 12 of the vehicle 100 and close the upper-mounted negative contactor S3 when the upper-mounted negative contactor S3 is not stuck, and then control the vehicle 100 to execute the high-voltage power-on process.

[0085] In some embodiments, based on different vehicle states and the adhesion detection result of the bodywork negative contactor S3 of the vehicle 100, a corresponding bodywork power-on process (S30) is executed, including the steps of:

[0086] S34: When the upper body manual switch signal is received as an on signal and the vehicle state is confirmed to be in the driving state, the vehicle 100 is controlled to execute the vehicle power-off process;

[0087] S35: When confirming that the vehicle 100 remains in the power-off state for a predetermined period of time, detecting whether the upper negative contactor S3 of the vehicle 100 is stuck;

[0088] S36: When the upper negative contactor S3 is stuck, control the display of sticking information on the instrument panel 14 of the vehicle 100;

[0089] S37: When the bodywork negative contactor S3 is not stuck, the bodywork controller 12 of the vehicle 100 is activated and the bodywork negative contactor S3 is closed to control the vehicle 100 to execute the high voltage power-on process.

[0090] In this way, the logic of controlling the power-on of the upper body is perfect and the process is clear. Displaying specific information on the instrument panel 14 also facilitates process monitoring and helps the driver to deal with related problems in a timely manner.

[0091] Specifically, it is understood that when vehicle 100 is in driving state, vehicle controller 15 first requests motor zero torque so that vehicle speed is reduced to a certain value, that is, first executes vehicle power-down process. Then after confirming that vehicle 100 has walked the power-down process, remain on power-down state to after predetermined duration (predetermined duration can be determined according to actual needs), then execute the adhesion detection of upper negative contactor S3. When detecting that upper negative contactor S3 is closed, it is believed that upper negative contactor S3 adhesion, vehicle controller 15 controls display adhesion information on the instrument panel 14 of vehicle 100, is convenient to prompt the driver to handle in time.

[0092] The detection process is as follows: first close the main negative relay S2, and after confirming that S2 is closed, detect the voltage between the voltage detection point 2 and the voltage detection point 7. When the voltage is greater than a certain value, such as greater than 20% of the bus voltage, it is considered that the upper negative contactor S3 is in a closed state, that is, a sticking state; otherwise, it is considered that the upper negative contactor S3 is disconnected.

[0093] When the bodywork negative contactor S3 is disconnected, that is, when no adhesion occurs, the vehicle controller 15 activates the bodywork controller 12 of the vehicle 100 and closes the bodywork negative contactor S3 to control the vehicle 100 to execute the high-voltage power-on process.

[0094] The high-voltage power-up process involves closing the main positive relay S1 and then opening the pre-charge relay S0 after pre-charging is complete. Pre-charging not only refers to pre-charging of the original vehicle components but also includes pre-charging of the upper components. Pre-charging is considered complete when the voltage across the upper components exceeds a certain value, such as 90% of the bus voltage.

[0095] See also Figure 2 and Figure 6 In some embodiments, the vehicle controller 15 is also used to ensure that the vehicle 100 does not execute the upper installation power-on process and record the start signal when the upper installation manual switch signal is received as an open signal and the vehicle 100 is confirmed to be in the charging state, and is used to control the display of a prompt message on the dashboard 14 of the vehicle 100 to remind the user to restore the control of the upper installation manual switch when the vehicle 100 performs the first vehicle power-on after the charging state ends based on the open signal.

[0096] In some embodiments, the control method further comprises:

[0097] S38: When the received upper body manual switch signal is an on signal and the vehicle state is confirmed to be a charging state, ensure that the vehicle 100 does not execute the upper body power-on process and record the on signal;

[0098] S39: Based on the start signal, when the vehicle 100 performs the first vehicle power-on after the charging state ends, a prompt message is displayed on the instrument panel 14 of the vehicle 100 to remind the user to resume control of the upper body manual switch.

[0099] In this way, the logic of controlling the power-on of the upper body is perfect and the process is clear, which can avoid the situation where the upper body is accidentally turned on in the charging state. In addition, the prompt information displayed on the instrument panel 14 also makes it convenient for the driver to restore the state of the upper body manual switch 11 when the upper body is powered on for the first time after charging is completed to restore the control mode of manual control of the upper body.

[0100] Specifically, in order to avoid the situation where the superstructure is mistakenly turned on in the charging state, when the vehicle controller 15 determines that the vehicle state is the charging state, it ensures that the vehicle 100 does not execute the superstructure power-on process and records the start signal, so that when the vehicle is powered on for the first time after the non-charging mode, a prompt message is displayed on the instrument panel 14 according to the start signal to remind the driver to restore the state of the superstructure manual switch 11, so as not to affect the subsequent manual control of the opening and closing of the superstructure according to the superstructure manual switch 11.

[0101] See also Figure 2 and Figure 7 In some embodiments, the vehicle controller 15 is configured to control the execution of the upper installation power-off process when receiving a signal from the upper installation manual switch that is an off signal;

[0102] Among them, the upper body power-on and power-off process includes: first controlling the reduction of the upper body power; then, when the upper body power drops to less than the preset power or the power reduction time is longer than the preset time, controlling the disconnection of the upper body negative contactor S3; then detecting the voltage at both ends of the upper body; finally, when the voltage at both ends of the upper body is less than the first preset voltage, confirming that the upper body negative contactor S3 is not stuck and controlling the instrument panel 14 of the vehicle 100 to display the upper body disconnection information within a certain period of time; or when the voltage at both ends of the upper body is greater than the second preset voltage, confirming that the upper body negative contactor S3 is stuck and controlling the instrument panel 14 to continuously display the sticking information.

[0103] In some embodiments, when the manual switch signal is an off signal, the power-off process (S40) is executed, including the steps of:

[0104] S41: Based on the shutdown signal, control the reduction of the upper load power;

[0105] S42: When the power of the vehicle body drops to less than a preset power or the power drop duration is longer than a preset duration, controlling to disconnect the negative contactor S3 of the vehicle body 100;

[0106] S43: Detecting voltages at both ends of the vehicle 100;

[0107] S44: when the voltage across the upper body is less than the first preset voltage, confirm that the upper body negative contactor S3 is not adhered and control the instrument panel 14 of the vehicle 100 to display the upper body disconnection information within a certain period of time; or

[0108] S45: When the voltage across the bodywork is greater than the second preset voltage, confirm that the bodywork negative contactor S3 is stuck and control the instrument panel 14 to display the sticking information.

[0109] In this way, the logic of controlling the power on and off is perfect and the process is clear. In addition, the information displayed on the instrument panel 14 also makes it easier for the driver to deal with related problems in a timely manner.

[0110] Specifically, after the vehicle controller 15 receives the shutdown signal, it requests the upper body to have zero power; when the upper body power drops to less than the preset power or the power drop duration is longer than the preset duration, the upper body negative contactor S3 of the vehicle 100 is controlled to be disconnected, where the preset power can be 1KW and the preset duration can be 60s, and the upper body negative contactor S3 is disconnected to stop enabling the upper body.

[0111] Then, the voltage at both ends of the vehicle 100 is detected, such as Figure 2 As shown, the voltage between the voltage detection points 6 and 7 can be detected. When the voltage is less than a first preset voltage, for example, less than 10V, the dashboard 14 of the vehicle 100 can be controlled to display the upper body disconnection information within a certain period of time, such as within 100s.

[0112] Alternatively, when the voltage is greater than the second preset voltage, such as greater than 100V, the control instrument panel 14 continues to display the adhesion information. It can be understood that the vehicle controller 15 can control the instrument panel 14 to continue to display the adhesion information of the upper negative contactor S3 when it is powered on next time, that is, the adhesion fault, until the fault disappears.

[0113] See also Figure 2 and Figure 8 In some embodiments, the vehicle 100 includes an insulation detection module 13, and the vehicle controller 15 is further configured to obtain an insulation fault signal fed back by the insulation detection module 13, and to execute a power-on and power-off process based on the insulation fault signal;

[0114] The vehicle controller 15 is further configured to, upon confirming that the upper body negative contactor S3 is not adhered, control the insulation detection module 13 to re-determine whether an insulation fault exists, and upon re-confirming that an insulation fault exists, control the instrument panel 14 to display insulation fault information and execute a vehicle power-off process, and upon re-confirming that no insulation fault exists, control the instrument panel 14 to continuously display the upper body insulation fault information and maintain the driving function of the vehicle 100.

[0115] The vehicle controller 15 is also used to control the instrument panel 14 to continuously display insulation fault information and execute the vehicle power-off process when it is confirmed that the upper negative contactor S3 is adhered and the instrument panel 14 continuously displays adhesion information.

[0116] In some embodiments, the vehicle 100 includes an insulation detection module 13, and the control method includes the steps of:

[0117] S50: Obtaining the insulation fault signal fed back by the insulation detection module 13;

[0118] S60: Based on the insulation fault signal, the installation and power-off process is executed;

[0119] S70: When confirming that the upper negative contactor S3 is not stuck, the insulation detection module 13 is controlled to determine again whether there is an insulation fault;

[0120] S71: When the insulation fault is confirmed again, the control panel 14 displays the insulation fault information and executes the vehicle power-off process;

[0121] S72: When it is re-confirmed that there is no insulation fault, the control panel 14 continues to display the body insulation fault information and maintains the driving function of the vehicle 100;

[0122] S80: When it is confirmed that the upper negative contactor S3 is stuck, the control panel 14 continuously displays the insulation fault information and executes the vehicle power-off process.

[0123] In this way, the insulation test results can be used to determine whether only the upper insulation is faulty, thereby enabling the vehicle to be driven even if only the upper insulation has a problem.

[0124] Specifically, after receiving the upper-mounted fault signal fed back by the upper-mounted controller 12 , the vehicle controller 15 executes the upper-mounted power-off process described above.

[0125] After the vehicle controller 15 receives the shutdown signal, it requests the upper body to have zero power; when the upper body power drops to less than the preset power or the power drop duration is longer than the preset duration, the control disconnects the upper body negative contactor S3 of the vehicle 100, that is, S3, where the preset power can be 1KW and the preset duration can be 5s, and S3 is disconnected to stop enabling the upper body.

[0126] Then, the voltage at both ends of the vehicle 100 is detected, such as Figure 2 As shown, the voltage between the voltage detection points 6 and 7 can be detected. When the voltage is less than a first preset voltage, for example, less than 10V, the dashboard 14 of the vehicle 100 can be controlled to display the upper body disconnection information within a certain period of time, such as within 100s.

[0127] After confirming that the upper negative contactor S3 is not stuck, the vehicle controller 15 can control the insulation detection module to determine again whether there is an insulation problem. If the insulation fault still exists, it means that there is a problem with the insulation of the entire vehicle. At this time, the insulation fault information can be displayed on the instrument panel 14 and the vehicle power-off process can be executed. If there is no insulation fault, it means that only the upper insulation is faulty. At this time, the instrument panel 14 can be controlled to continuously display the upper insulation fault information and maintain the driving function of the vehicle 100, so that the vehicle 100 can still be driven when there is only an insulation problem with the upper insulation.

[0128] When the voltage is greater than the second preset voltage, such as greater than 100V, the instrument panel 14 is controlled to continuously display the adhesion information. It is understood that the vehicle controller 15 can control the instrument panel 14 to continue to display the adhesion information of the upper negative contactor S3 during the next power-on until the fault disappears. At the same time, the instrument panel 14 is controlled to display the insulation fault information and execute the vehicle power-off process.

[0129] See also Figure 2 and Figure 9 In some embodiments, the vehicle includes a top-mounted controller, and the vehicle controller is used to obtain a top-mounted fault signal fed back by the top-mounted controller, and to execute a top-mounted power-off process based on the top-mounted fault signal.

[0130] In some embodiments, the vehicle 100 includes a body-mounted controller 12, and the control method further includes the steps of:

[0131] S90: Obtaining a bodywork fault signal fed back by the bodywork controller 12;

[0132] S100: Based on the installation fault signal, execute the installation and power-off process.

[0133] In this way, the loading and unloading logic of the vehicle 100 is more perfect, ensuring the driving safety of the vehicle 100.

[0134] Specifically, in step S90 and step S100 , after receiving the upper-mounted fault signal fed back by the upper-mounted controller 12 , the vehicle controller 15 executes the upper-mounted power-off process described above.

[0135] After the vehicle controller 15 receives the shutdown signal, it requests the upper body to have zero power; when the upper body power drops to less than the preset power or the power drop duration is longer than the preset duration, the control disconnects the upper body negative contactor S3 of the vehicle 100, that is, S3, where the preset power can be 1KW and the preset duration can be 5s, and S3 is disconnected to stop enabling the upper body.

[0136] Then, the voltage at both ends of the vehicle 100 is detected, such as Figure 2As shown, the voltage between the voltage detection points 6 and 7 can be detected. When the voltage is less than a first preset voltage, for example, less than 10V, the dashboard 14 of the vehicle 100 can be controlled to display the upper body disconnection information within a certain period of time, such as within 100s.

[0137] Alternatively, when the voltage is greater than the second preset voltage, such as greater than 100V, the control panel 14 continues to display the adhesion information. It can be understood that the vehicle controller 15 can control the instrument panel 14 to continue to display the adhesion information of the upper negative contactor S3 when it is powered on next time until the fault disappears.

[0138] In certain embodiments, the control method further includes, upon receiving at least two signals, namely, a shutdown signal, an insulation fault signal, and an installation fault signal, controlling the installation and power-off process with the installation fault signal having the highest priority and the insulation fault signal having the lowest priority. This improves the installation and power-off logic of vehicle 100 and ensures the driving safety of vehicle 100.

[0139] In summary, this application reasonably realizes the function of pre-charging the upper body by adding only one upper body negative contactor S3 and adjusting the closing order of each contactor and the adhesion detection result, thus saving the cost and space of the whole vehicle. At the same time, this application realizes the opening and closing of the upper body by manually opening and closing the switch, and displays the possible risks on the instrument panel 14, which can remind the driver to deal with the problem as soon as possible to avoid problems such as electric shock. In addition, this application determines whether it is only the upper body insulation fault through the insulation test result, and realizes the function of being able to drive when there is only the upper body insulation problem.

[0140] An embodiment of the present application provides a non-volatile computer-readable storage medium storing a computer program. When the computer program is executed by one or more processors, the processors execute the control method of any of the above embodiments.

[0141] Specifically, in one embodiment, the processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or a combination of the above chips.

[0142] Computer programs can be stored in a memory. Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as the program instructions / modules corresponding to the methods in the above-described method embodiments. The processor executes the non-transitory software programs, instructions, and modules stored in the memory to perform various functional applications and data processing of the processor, thereby implementing the methods in the above-described method embodiments.

[0143] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The program for implementation can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above-mentioned embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD). The storage medium can also include a combination of the above-mentioned types of memory.

[0144] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0145] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A control method for a vehicle, characterized in that: The control method includes: Get the upper body manual switch signal; When the body manual switch signal is an on signal, confirming the vehicle status; Based on different vehicle states and adhesion detection results of the vehicle's upper body negative contactor, executing a corresponding upper body power-on process, the upper body negative contactor is connected to the vehicle's upper body and one end of the main negative relay; When receiving the upper manual switch signal as an on signal and confirming that the vehicle is in a driving state, controlling the vehicle to execute a vehicle power-off process; Upon receiving the upper body manual switch signal as an on signal and confirming that the vehicle is in a low voltage power-on state, detecting whether the upper body negative contactor of the vehicle is adhered, the upper body negative contactor being connected to the upper body of the vehicle and one end of the main negative relay; When receiving the upper body manual switch signal as an on signal and confirming that the vehicle is in a charging state, ensuring that the vehicle does not execute the upper body power-on process and recording the on signal; Based on the start signal, when the vehicle is powered on for the first time after the charging state is completed, controlling the display of a prompt message on the instrument panel of the vehicle to remind the user to resume control of the manual switch of the upper body; When the manual installation switch signal is an off signal, the installation power-off process is executed.

2. The control method according to claim 1, characterized in that: The corresponding installation and power-on process is executed based on different vehicle states, including: When confirming that the vehicle remains in a power-off state for a predetermined period of time, detecting whether a negative contactor mounted on the vehicle is stuck; When the upper negative contactor is stuck, controlling the display of sticking information on the instrument panel of the vehicle; In the case that the bodywork negative contactor is not stuck, after the bodywork controller of the vehicle is activated and the bodywork negative contactor is closed, the vehicle is controlled to execute a high-voltage power-on process.

3. The control method according to claim 1, wherein: When the received manual switch signal is an off signal, executing the power-off process includes: Based on the shutdown signal, control the reduction of the upper load power; When the upper load power drops to less than a preset power or the power drop duration is longer than a preset duration, controlling to disconnect the upper load negative contactor; detecting voltages at both ends of the upper device; When the voltage across the bodywork is less than a first preset voltage, confirming that the bodywork negative contactor is not adhered and controlling the vehicle instrument panel to display bodywork disconnection information for a certain period of time; or When the voltage across the bodywork is greater than a second preset voltage, it is confirmed that the bodywork negative contactor is stuck and the instrument panel is controlled to continuously display sticking information.

4. The control method according to claim 3, characterized in that: The vehicle includes an insulation detection module, and the control method includes: Obtaining an insulation fault signal fed back by the insulation detection module; Based on the insulation fault signal, executing the installation and power-off process; When confirming that the upper negative contactor is not stuck, controlling the insulation detection module to determine again whether there is an insulation fault; When the insulation fault is confirmed again, the instrument panel is controlled to display insulation fault information and the vehicle power-off process is executed; When it is reconfirmed that there is no insulation fault, controlling the instrument panel to continuously display the body insulation fault information and maintain the driving function of the vehicle; When it is confirmed that the upper negative contactor is adhered, the instrument panel is controlled to continuously display insulation fault information and the vehicle power-off process is executed.

5. The control method according to claim 4, characterized in that: The vehicle includes a bodywork controller, and the control method further includes: Obtaining a bodywork fault signal fed back by the bodywork controller; Based on the installation fault signal, the installation and power-off process is executed.

6. The control method according to claim 5, characterized in that: The control method includes: When at least two signals, namely, the shutdown signal, the insulation fault signal, and the loading fault signal, are obtained, the loading fault signal is given the highest priority and the insulation fault signal is given the lowest priority, and the loading and power-off process is controlled to be executed.

7. A control circuit for a vehicle, characterized in that: For implementing the control method according to any one of claims 1 to 6, the control circuit comprises: Main positive relay, connected to the positive side of the power supply; a main negative relay connected to the negative side of the power supply; A pre-charging circuit, connected to both ends of the main positive relay, for pre-charging the vehicle before executing the upper loading and powering process; and The upper negative contactor is connected to the upper part of the vehicle and one end of the main negative relay, and the vehicle controller is connected to the pre-charging circuit and the upper negative contactor; Among them, the vehicle controller is used to receive the upper body manual switch signal, perform adhesion detection on the upper body negative contactor, and execute the corresponding upper body power-on process or upper body power-off process according to the upper body manual switch signal and the adhesion detection result.

8. A vehicle, characterized in that: The vehicle comprises: The body manual switch is used to generate a body manual switch signal; Bodywork controller, used to feedback bodywork fault signals; Insulation detection module, used to feedback insulation fault signal; and A vehicle controller, wherein the vehicle controller is connected to the body manual switch, the body controller and the insulation detection module, and is used to implement the control method according to any one of claims 1 to 6.

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