Control method for a target vehicle and vehicle

Abstract

The present invention discloses a control method and a vehicle for a target vehicle. Among them, the method includes: in response to an unlocking instruction for the target vehicle, controlling the target vehicle to be in an unlocked state, where the unlocked state indicates that the target vehicle can be started; based on the unlocked state, performing high-voltage power-on on the target vehicle to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; in the case where the power-on result is that the target vehicle has successfully performed high-voltage power-on, controlling the target vehicle to be in a starting state, where the starting state is used to indicate that the target vehicle is in a state capable of traveling. The present invention solves the technical problem that the sound of the relay closing during the high-voltage power-on process affects the driving experience of the driver.

Description

Technical Field

[0001] The present invention relates to the field of intelligent vehicles, and in particular, to a control method and a vehicle for a target vehicle. Background Art

[0002] Currently, the high-voltage power-on process of pure electric vehicles is generally controlled by a vehicle controller. When the driver steps on the brake and presses the vehicle start key, the vehicle controller can control the high-voltage battery to close the main positive, main negative, and pre-charge relays in the high-voltage system to establish a high-voltage circuit, thereby performing high-voltage power-on for the vehicle. However, the entire high-voltage power-on process takes a certain amount of time. During this period, the above-mentioned multiple high-voltage relays are closed sequentially, and each closure will generate a certain degree of noise, which will greatly affect the driver's mood and driving experience.

[0003] In view of the above problems, no effective solution has been proposed yet. Summary of the Invention

[0004] Embodiments of the present invention provide a control method and a vehicle for a target vehicle to at least solve the technical problem that the noise generated by the closure of the relay during the high-voltage power-on process affects the driver's driving experience.

[0005] According to one aspect of the embodiments of the present invention, a control method for a target vehicle is provided, including: in response to an unlocking instruction for the target vehicle, controlling the target vehicle to be in an unlocked state, where the unlocked state indicates that the target vehicle can be started; performing high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; and in the case where the power-on result is that the target vehicle has successfully performed high-voltage power-on, controlling the target vehicle to be in a starting state, where the starting state is used to indicate that the target vehicle is in a state where it can travel.

[0006] Further, performing high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result includes: starting a target controller of the target vehicle based on the unlocked state; and performing high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result.

[0007] Further, performing high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result includes: controlling a target relay based on the target controller to obtain a first control result, where the first control result is used to indicate whether the target relay has been successfully closed; and in the case where the first control result is that the target relay has been successfully closed, performing high-voltage power-on on the target vehicle based on a high-voltage power-on mode to obtain a power-on result.

[0008] Further, the target relay includes: a main negative relay, a pre-charge relay, and a main positive relay. Controlling the target relay based on the target controller to obtain a first control result includes: closing the main negative relay to obtain a first closed state, where the first closed state is used to indicate whether the main negative relay is successfully closed; when the first closed state is that the main negative relay is successfully closed, closing the pre-charge relay to obtain a second closed state, where the second closed state is used to indicate whether the pre-charge relay is successfully closed; when the second closed state is that the main negative relay is successfully closed, closing the main positive relay to obtain a third closed state, where the third closed state is used to indicate whether the main positive relay is successfully closed; based on whether the third closed state is that the main positive relay is successfully closed, determining that the first control result is to successfully turn off the target relay.

[0009] Further, before closing the main negative relay to obtain a first closed state, the method further includes: determining whether the main negative relay, the pre-charge relay, and the main positive relay are all in the open state; when the main negative relay, the pre-charge relay, and the main positive relay are all in the open state, closing the main negative relay to obtain a first closed state.

[0010] Further, when the first control result is to successfully turn off the target relay, performing high-voltage power-on on the target vehicle based on the high-voltage power-on mode to obtain a power-on result, including: when the first control result is to successfully turn off the target relay, retrieving the working state of the target converter to obtain a retrieval result, where the retrieval result is used to indicate whether the working state of the target converter is successfully retrieved; when the retrieval result is that the working state of the target converter is successfully retrieved, performing high-voltage power-on on the target vehicle to obtain a power-on result.

[0011] Further, the method further includes: obtaining the hood state and the maintenance state of the target vehicle, where the hood state is used to indicate whether the hood of the target vehicle is closed, and the maintenance state is used to indicate whether the target vehicle is under maintenance; when the hood state is that the hood of the target vehicle is closed and the maintenance state is that the target vehicle is not under maintenance, performing high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result.

[0012] Further, before performing high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result, the method further includes: controlling the target gear based on the target controller to obtain a second control result, where the second control result is used to perform low-voltage power-on on the target vehicle; performing high-voltage power-on on the target vehicle based on the second control result to obtain a power-on result.

[0013] Further, before controlling the target gear based on the target controller to obtain a second control result, the method further includes: testing the target controller to obtain a test result, where the test result is used to indicate whether the target controller can operate normally; and when the test result indicates that the target controller can operate normally, controlling the target gear based on the target controller to obtain a second control result.

[0014] According to another aspect of the embodiments of the present invention, there is also provided a control device for a target vehicle, including: a first control module configured to control the target vehicle to be in an unlocked state in response to an unlocking instruction for the target vehicle, where the unlocked state indicates that the target vehicle can be started; a power-on module configured to perform high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; and a second control module configured to control the target vehicle to be in a starting state when the power-on result indicates that the target vehicle has successfully performed high-voltage power-on, where the starting state is used to indicate that the target vehicle is in a state capable of traveling.

[0015] Further, the power-on module includes: a target controller that starts the target vehicle based on the unlocked state; and performs high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result.

[0016] Further, the power-on module includes: controlling a target relay based on the target controller to obtain a first control result, where the first control result is used to indicate whether the target relay has been successfully closed; and when the first control result indicates that the target relay has been successfully closed, performing high-voltage power-on on the target vehicle based on a high-voltage power-on mode to obtain a power-on result.

[0017] Further, the target relay includes: a main negative relay, a pre-charge relay, and a main positive relay. The power-on module includes: closing the main negative relay to obtain a first closed state, where the first closed state is used to indicate whether the main negative relay has been successfully closed; when the first closed state indicates that the main negative relay has been successfully closed, closing the pre-charge relay to obtain a second closed state, where the second closed state is used to indicate whether the pre-charge relay has been successfully closed; when the second closed state indicates that the main negative relay has been successfully closed, closing the main positive relay to obtain a third closed state, where the third closed state is used to indicate whether the main positive relay has been successfully closed; and determining that the first control result is that the target relay has been successfully closed when the third closed state indicates whether the main positive relay has been successfully closed.

[0018] Further, before closing the main negative relay to obtain the first closed state, the device further includes: determining whether the main negative relay, the pre-charge relay, and the main positive relay are all in the open state; and closing the main negative relay to obtain the first closed state when the main negative relay, the pre-charge relay, and the main positive relay are all in the open state.

[0019] Further, the power-on module includes: when the first control result is successfully closing the target relay, retrieving the working state of the target converter to obtain a retrieval result, where the retrieval result is used to indicate whether the working state of the target converter is successfully retrieved; and performing high-voltage power-on on the target vehicle to obtain a power-on result when the retrieval result is successfully retrieving the working state of the target converter.

[0020] Further, the device further includes: obtaining the hood state and the maintenance state of the target vehicle, where the hood state is used to indicate whether the hood of the target vehicle is closed, and the maintenance state is used to indicate whether the target vehicle is under maintenance; and performing high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result when the hood state is that the hood of the target vehicle is closed and the maintenance state is that the target vehicle is not under maintenance.

[0021] Further, the device further includes: controlling the target gear based on the target controller to obtain a second control result, where the second control result is used to perform low-voltage power-on on the target vehicle; and performing high-voltage power-on on the target vehicle based on the second control result to obtain a power-on result.

[0022] Further, the device further includes: testing the target controller to obtain a test result, where the test result is used to indicate whether the target controller can operate normally; and controlling the target gear based on the target controller to obtain a second control result when the test result is that the target controller can operate normally.

[0023] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium, including a stored program, where when the program runs, it controls the device where the computer-readable storage medium is located to execute the control method of the target vehicle in any one of the above.

[0024] According to another aspect of the embodiments of the present invention, there is also provided a target vehicle, including: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors execute the control method of the target vehicle in any one of the above.

[0025] In an embodiment of the present invention, in response to an unlocking instruction for a target vehicle, the target vehicle is controlled to be in an unlocked state; based on the unlocked state, high-voltage power-on is performed on the target vehicle to obtain a power-on result; in the case where the power-on result is that the target vehicle successfully performs high-voltage power-on, the target vehicle is controlled to be in a starting state. In this way, when the driver unlocks the vehicle, the system starts to self-start and self-check the vehicle, completes the process of high-voltage power-on and enters the starting state, enabling the driver to avoid participating in the cumbersome vehicle power-on and start process, thereby achieving the technical effect of rapid high-voltage power-on of the vehicle, and further solving the technical problem that the sound of relay closing during the high-voltage power-on process affects the driving experience of the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0027] Figure 1 is a structural block diagram of a vehicle system shown according to an embodiment of the present invention;

[0028] Figure 2 is a control method of a target vehicle shown according to an embodiment of the present invention;

[0029] Figure 3 is a schematic flow chart of a method for vehicle pre-start shown according to an embodiment of the present invention;

[0030] Figure 4 is a flow chart of method steps for high-voltage power-on shown according to an embodiment of the present invention;

[0031] Figure 5 is a structural block diagram of a control device of a target vehicle shown according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present invention are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] The process of high-voltage power-on for traditional pure electric vehicles generally includes the following steps: the driver unlocks the vehicle, opens the driver's side door, the driver takes a seat, steps on the brake, presses the key switch, the instrument lights up and high-voltage power-on is performed, and the high-voltage power-on is completed. The entire high-voltage power-on process requires too many steps of driver operation and will take a relatively long time. During this period, multiple high-voltage relays in the vehicle's high-voltage system close successively, and there will be closing sounds from time to time, which will greatly affect the driver's mood. And during the current high-voltage power-on process, there may be too large a change in the safety voltage, resulting in the relay sticking and being damaged due to overcurrent heating.

[0035] In order to avoid the sound of the relay closing from affecting the driver's driving experience and to avoid the relay closing before the pre-charge verification is completed, which may cause damage to the relay, the present application proposes a control method for a target vehicle. Figure 1 It is a structural block diagram of a vehicle system shown according to an embodiment of the present invention and can run the control method of the vehicle, such as Figure 1As shown, VCU (Vehicle Control Unit) refers to the vehicle controller, BMS (Battery Management System) refers to the battery management system, MCU (Microcontroller Unit) refers to the vehicle microcontroller unit, DC / DC refers to the voltage converter, BCM (Body Control Module) refers to the body control module, IC refers to the instrument controller, and CAN (Controller Area Network) refers to the domain controller network. As the real vehicle controller, VCU can control the operation of each control unit or module in the vehicle. Generally, VCU interacts with control units and control modules such as BMS, MCU, DC / DC, IC, and BCM through the CAN line of the serial communication network capable of realizing distributed real-time control to control the entire high-voltage pre-power-on process. To detect the closed state and unlocking state of the front engine hood, BCM can be hard-wired to the front engine hood sensor and unlocking mechanism to send the detection results to VCU.

[0036] Embodiment 1

[0037] According to an embodiment of the present invention, a method embodiment for controlling a target vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0038] Figure 2 is a method for controlling a target vehicle shown according to an embodiment of the present invention, as Figure 2 shown, the method includes the following steps:

[0039] Step S202, in response to an unlocking instruction for the target vehicle, control the target vehicle to be in an unlocked state.

[0040] Among them, the unlocked state means that the target vehicle can be started.

[0041] Generally, the driver can unlock the vehicle by means of a mechanical key or remote control, and the specific unlocking method is not limited. After the driver unlocks the vehicle, VCU can control the low-voltage relay box to wake up other vehicle control units or modules through CAN.

[0042] Step S204, based on the unlocked state, perform high-voltage power-on on the target vehicle to obtain a power-on result.

[0043] Among them, the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on.

[0044] After all control units or control modules in the vehicle enter the working state, the vehicle can be powered on with high voltage without waiting for the driver to enter the vehicle.

[0045] Step S206, when the power-on result is that the target vehicle is successfully powered on with high voltage, control the target vehicle to be in the starting state.

[0046] Among them, the starting state is used to indicate that the target vehicle is in a state where it can drive.

[0047] After the VCU controls the vehicle to complete the high-voltage power-on, it can enter the starting state, and the driver can enter the vehicle at any time and directly start the vehicle, avoiding the cumbersome and long waiting process for the vehicle to start.

[0048] Through the above steps, when the driver unlocks the vehicle, the system can start the self-start and self-check of the vehicle, complete the process of high-voltage power-on and enter the starting state, enabling the driver not to participate in the cumbersome vehicle power-on and start process, thus achieving the technical effect of rapid high-voltage power-on of the vehicle, and further solving the technical problem that the sound of the relay closing during the high-voltage power-on process affects the driver's driving experience.

[0049] In an alternative embodiment, high-voltage power-on of the target vehicle is performed based on the unlock state to obtain a power-on result, including: starting the target controller of the target vehicle based on the unlock state; performing high-voltage power-on of the target vehicle based on the target controller to obtain a power-on result.

[0050] The above-mentioned target controller generally refers to control units and control modules such as BMS, DC / DC, MCU, CAN, BCM, IC, etc.

[0051] To simply and clearly show the above process of starting the target controller and power-on, Figure 3 is a schematic flowchart of a method for pre-starting a vehicle shown according to an embodiment of the present invention. As Figure 3 shown, the method includes:

[0052] Step S302, if the electric vehicle is in the off state, after detecting that the user unlocks the vehicle, wake up the controllers on the vehicle's CAN communication network, such as control units and control modules such as BMS, DC / DC, MCU, CAN, BCM, IC, etc.

[0053] Step S304, when the controllers on the CAN communication network are woken up, perform a self-check operation.

[0054] Step S306, after the above controllers pass the self-check, the BCM sets the key switch from the off position to the on position, and the vehicle is normally powered on with low voltage to light up the instrument panel.

[0055] Step S308, the BCM sends a high-voltage power-on request to the VCU.

[0056] Step S310, obtain the status of the front engine hood of the electric vehicle and whether the vehicle is currently in the maintenance mode.

[0057] It should be noted that to ensure the safety of the driver, the VCU can enter the high-voltage power-on control mode only when the front engine hood of the electric vehicle is in the closed state and the vehicle is not in the maintenance mode.

[0058] Step 312, in response to the successful high-voltage power-on, the VCU sends an instruction to the vehicle's IC instrument controller to turn on the Ready indicator light, reminding the driver that the vehicle has started and can drive normally. The specific vehicle power-on process is introduced below.

[0059] In an alternative embodiment, high-voltage power-on of the target vehicle is performed based on the target controller to obtain a power-on result, including: controlling the target relay based on the target controller to obtain a first control result, where the first control result is used to indicate whether the target relay is successfully closed; in the case where the first control result is that the target relay is successfully closed, high-voltage power-on of the target vehicle is performed based on the high-voltage power-on mode to obtain a power-on result.

[0060] The above-mentioned target relays generally include: a main positive relay, a main negative relay, and a pre-charge relay. The above-mentioned first control result means that all the target relays are successfully closed. When the VCU activates multiple control units and control modules in the system and enters the high-voltage power-on mode, it can directly use these control units and control modules to start closing the above-mentioned target relays before the driver enters the vehicle. When all the relays are closed, it means that the power-on execution components of the vehicle are normal, and high-voltage power-on of the vehicle is performed.

[0061] In an alternative embodiment, the target relays include: a main negative relay, a pre-charge relay, and a main positive relay. Controlling the target relay based on the target controller to obtain a first control result includes: closing the main negative relay to obtain a first closed state, where the first closed state is used to indicate whether the main negative relay is successfully closed; in the case where the first closed state is that the main negative relay is successfully closed, closing the pre-charge relay to obtain a second closed state, where the second closed state is used to indicate whether the pre-charge relay is successfully closed; in the case where the second closed state is that the main negative relay is successfully closed, closing the main positive relay to obtain a third closed state, where the third closed state is used to indicate whether the main positive relay is successfully closed; based on whether the third closed state is that the main positive relay is successfully closed, determine that the first control result is that the target relay is successfully closed.

[0062] To more clearly show the process of relay closing and high-voltage power-on, Figure 4 is a flowchart of the steps of a high-voltage power-on method shown according to an embodiment of the present invention. As Figure 4 shown, the method includes:

[0063] Step S402, determine whether the target relays are all in the open state. In response to all relays being open, control the main negative relay to close.

[0064] In an optional embodiment, before closing the main negative relay to obtain the first closed state, the method further includes: determining whether the main negative relay, the pre-charge relay, and the main positive relay are all in the open state; in the case where the main negative relay, the pre-charge relay, and the main positive relay are all in the open state, close the main negative relay to obtain the first closed state.

[0065] Optionally, corresponding voltage detection sensors can be configured on each relay to detect the voltage across the relay, and based on the voltage, determine whether the relay is in the closed state or the open state. The specific technology can refer to relevant literature and will not be elaborated here.

[0066] Optionally, if it is determined that all the relays are in the open state, it means that the current state of the relays is normal, and the VCU can send the first closing instruction to close the main negative relay to the BMS, controlling the BMS to first close the main negative relay; if it is determined that any one of the relays is in the closed state, it means that the relay has a sticking fault. If high-voltage power-on is performed at this time, it may cause damage to the pre-charge circuit, or the vehicle may not be able to power off normally after driving, and even serious problems such as overall thermal runaway of the battery and electric shock to the driver or maintenance personnel may occur. At this time, it is necessary to immediately exit the high-voltage power-on mode, and at the same time record the above-mentioned faults to remind the driver to repair the vehicle.

[0067] Step S404, in response to the main negative relay closing within a preset time, control the pre-charge relay to close.

[0068] Optionally, in order to avoid the relay closing for too long affecting the driver's starting of the vehicle, or a communication link failure resulting in the relay not being able to close, a closing time can be preset to detect whether the communication link is normal.

[0069] When the BMS receives the instruction to close the main negative relay, if the main negative relay does not close within the preset closing time, it means that there may be a fault in the communication link, or the main negative relay has a sticking fault, and the current output by the BMS is too small to cause the main negative relay to not close. Determine that the above first closed state is a closing failure. At this time, the high-voltage power-on mode can be exited. Since there are many reasons for the main negative relay not being able to close, the main negative relay can be recorded as having a closing timeout fault, and in-depth detection can be performed to eliminate the fault.

[0070] If the main negative relay closes within the preset closing time, it indicates that the communication link and the main negative relay are normal. Determine that the above first closing state is a successful closure. At this time, the VCU can send a second closing instruction to the BMS to close the pre-charge relay, controlling the BMS to close the pre-charge relay.

[0071] It should be noted that the closing sequence of the above main negative relay and the pre-charge relay is not limited.

[0072] Step S406, in response to the pre-charge relay closing within the preset time, control the main positive relay to close.

[0073] The above pre-charge relay and the main negative relay form a pre-charge circuit to ensure that the safe voltage of the entire high-voltage circuit rises steadily.

[0074] Optionally, when the BMS receives the instruction to close the pre-charge relay, if the pre-charge relay does not close within the preset closing time, determine that the above second closing state is a closing failure, exit the high-voltage power-on mode, and record that the pre-charge relay has a closing timeout fault.

[0075] If the pre-charge relay closes within the preset closing time, optionally, in order to avoid damage to the relay caused by excessive change in the safe voltage, a first pre-charge verification operation can be further performed. A first voltage difference is preset. After the pre-charge relay closes, detect and determine whether the voltage change difference of the MCU bus capacitor voltage from the start to the end of the pre-charge relay closing is less than the preset first voltage difference. If it is not less than, it means that the first pre-charge verification fails and the safe voltage changes too much. To avoid damage to the relay, at this time, the high-voltage power-on mode can be exited, the above closing state is determined to be a failure, and it is recorded that the pre-charge relay has a closing timeout fault; if it is less than, it means that the first pre-charge verification is successful and the safe voltage is within the normal range. Determine that the above first closing state is a successful closure. At this time, the VCU can send a third closing instruction to the BMS to close the main positive relay, controlling the BMS to close the main positive relay.

[0076] Optionally, the VCU can detect the input voltage of the DC / DC converter to replace the detection of the MCU bus capacitor voltage.

[0077] Optionally, a second pre-charge verification can also be performed to further protect the relay from damage. A second voltage difference can be preset. After the BMS receives the command to close the main positive relay, it detects and determines whether the current sampled voltage across the main positive relay is less than the second voltage difference. If it is not less than, it means the second pre-charge verification fails. To avoid damaging the relay, the high-voltage power-on mode can be exited at this time, the above-mentioned closed state is determined to be a failure, and a closed timeout fault of the pre-charge relay is recorded. If it is less than, it means the second pre-charge verification is successful, indicating that the safety voltage is within the normal range. The above-mentioned first closed state is determined to be a successful closure, and the BMS closes the main positive relay.

[0078] Step S408, in response to the main positive relay closing within a preset time, control the main positive relay to close.

[0079] Optionally, if the main positive relay does not close within the preset closing time, it is determined that the above-mentioned third closed state is a failure, the high-voltage power-on mode is exited, and a working timeout fault of the DC / DC is recorded.

[0080] If the main positive relay closes within the preset closing time, it is determined that the above-mentioned third closed state is a success, and the VUC can send a Buck working command to the DC / DC to perform high-voltage power-on.

[0081] Step S410, in response to the DC / DC feeding back the working state information within a preset time, determine that the high-voltage power-on is successful.

[0082] In an optional embodiment, in the case where the first control result is successfully closing the target relay, based on the high-voltage power-on mode, high-voltage power-on is performed on the target vehicle to obtain a power-on result, including: in the case where the first control result is successfully closing the target relay, the working state of the target converter is retrieved to obtain a retrieval result, where the retrieval result is used to indicate whether the working state of the target converter is successfully retrieved; in the case where the retrieval result is successfully retrieving the working state of the target converter, high-voltage power-on is performed on the target vehicle to obtain a power-on result.

[0083] The above-mentioned target converter generally refers to a DC / DC voltage converter. After all the target relays are closed, the working state of the DC / DC can be retrieved to determine the retrieval result. If it is successfully retrieved, the VCU controls to perform high-voltage power-on; if it is not retrieved successfully, the high-voltage power-on mode is exited.

[0084] Optionally, if the VCU receives the working state feedback from the DC / DC within a preset time, it means the high-voltage power-on is successful; if it does not receive, it means the high-voltage power-on fails. At this time, the driver can be reminded that the vehicle's high-voltage power-on fails through a preset method, such as issuing a voice reminder after the driver gets in the car, reminding through a mobile phone application, etc.

[0085] Optionally, the preset times in the steps of the above high-voltage power-on method may be different, and no specific limitation is made.

[0086] Through the above method, first detect whether all relays are in the off state initially to avoid accidents during high-voltage power-on, and then close multiple relays in sequence, which can make the safety voltage rise steadily. During the process of closing the relays, it is also possible to detect in real time whether the voltage change is too large, so as to timely avoid the relays from sticking and being damaged due to overcurrent heating.

[0087] In an alternative embodiment, the method further includes: obtaining the hood state and maintenance state of the target vehicle, where the hood state is used to indicate whether the hood of the target vehicle is closed, and the maintenance state is used to indicate whether the target vehicle is under maintenance; when the hood state is that the target vehicle has the hood closed and the maintenance state is that the target vehicle is not under maintenance, perform high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result.

[0088] To ensure the driving safety of the driver, optionally, the VCU can also perform real-time self-check of the vehicle, obtain the hood state and maintenance state of the vehicle, and determine whether the vehicle has a fault or abnormality currently. When everything is normal, that is, the hood is closed and the vehicle is not currently under maintenance, the high-voltage power-on mode can be entered when the driver unlocks the vehicle.

[0089] In an alternative embodiment, before performing high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result, the method further includes: controlling the target gear based on the target controller to obtain a second control result, where the second control result is used to perform low-voltage power-on on the target vehicle; performing high-voltage power-on on the target vehicle based on the second control result to obtain a power-on result.

[0090] The above target gear generally refers to the gear of the vehicle key switch. When the driver unlocks the vehicle and the VCU determines that the vehicle state is normal, the BCM can control the gear of the key switch to switch from the off gear to the on gear to perform low-voltage power-on on the vehicle. Optionally, the vehicle can be controlled to run by means of low-voltage power-on and vehicle working modules such as the IC instrument controller, and the control unit calculates according to the input signal and controls the corresponding actuators to act. The specific technology can refer to relevant documents.

[0091] In an alternative embodiment, before controlling the target gear based on the target controller to obtain a second control result, the method further includes: testing the target controller to obtain a test result, where the test result is used to indicate whether the target controller can operate normally; when the test result is that the target controller can operate normally, controlling the target gear based on the target controller to obtain a second control result.

[0092] Before switching the key ignition position, the VCU can also perform self-diagnostic tests on multiple control units and control modules in advance. After each control unit and control module sends feedback to the VCU, if it is determined that each control unit and control module is normal, the key ignition position can be switched.

[0093] Through the above solution, the vehicle can be powered on at high voltage before the user enters the vehicle, avoiding the user's driving experience being affected by the occasional relay closing sound. At the same time, the VCU can detect the high-voltage power-on state in real time and exit the high-voltage power-on mode in a timely manner in case of abnormal conditions, avoiding potential safety hazards during driving.

[0094] Embodiment 2

[0095] According to another aspect of the embodiments of the present invention, corresponding to the embodiments of the vehicle control method, this specification also provides a vehicle control device. Please refer to Figure 5 , Figure 5 which is a structural block diagram of a control device for a target vehicle shown according to an embodiment of the present invention. The device includes: a first control module 502, configured to control the target vehicle to be in an unlocked state in response to an unlocking instruction for the target vehicle, where the unlocked state means that the target vehicle can be started; a power-on module 504, configured to perform high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; a second control module 506, configured to control the target vehicle to be in a starting state when the power-on result is that the target vehicle has successfully performed high-voltage power-on, where the starting state is used to indicate that the target vehicle is in a state where it can travel.

[0096] Further, the power-on module 504 includes: a target controller for starting the target vehicle based on the unlocked state; and performing high-voltage power-on on the target vehicle based on the target controller to obtain a power-on result.

[0097] Further, the power-on module 504 includes: controlling a target relay based on the target controller to obtain a first control result, where the first control result is used to indicate whether the target relay has been successfully closed; and performing high-voltage power-on on the target vehicle based on a high-voltage power-on mode when the first control result is that the target relay has been successfully closed to obtain a power-on result.

[0098] Further, the target relay includes: a main negative relay, a pre-charge relay, and a main positive relay. The power-on module 504 includes: closing the main negative relay to obtain a first closed state, where the first closed state is used to indicate whether the main negative relay is successfully closed; when the first closed state is that the main negative relay is successfully closed, closing the pre-charge relay to obtain a second closed state, where the second closed state is used to indicate whether the pre-charge relay is successfully closed; when the second closed state is that the main negative relay is successfully closed, closing the main positive relay to obtain a third closed state, where the third closed state is used to indicate whether the main positive relay is successfully closed; based on whether the third closed state is that the main positive relay is successfully closed, determining that the first control result is to successfully turn off the target relay.

[0099] Further, before closing the main negative relay to obtain the first closed state, the device further includes: determining whether the main negative relay, the pre-charge relay, and the main positive relay are all in the open state; when the main negative relay, the pre-charge relay, and the main positive relay are all in the open state, closing the main negative relay to obtain the first closed state.

[0100] Further, the power-on module 504 includes: when the first control result is to successfully turn off the target relay, retrieving the working state of the target converter to obtain a retrieval result, where the retrieval result is used to indicate whether the working state of the target converter is successfully retrieved; when the retrieval result is that the working state of the target converter is successfully retrieved, performing high-voltage power-on on the target vehicle to obtain a power-on result.

[0101] Further, the device further includes: obtaining the hood state and the maintenance state of the target vehicle, where the hood state is used to indicate whether the hood of the target vehicle is closed, and the maintenance state is used to indicate whether the target vehicle is under maintenance; when the hood state is that the hood of the target vehicle is closed and the maintenance state is that the target vehicle is not under maintenance, performing high-voltage power-on on the target vehicle based on the unlocking state to obtain a power-on result.

[0102] Further, the device further includes: controlling the target gear based on the target controller to obtain a second control result, where the second control result is used to perform low-voltage power-on on the target vehicle; performing high-voltage power-on on the target vehicle based on the second control result to obtain a power-on result.

[0103] Further, the device further includes: testing the target controller to obtain a test result, where the test result is used to indicate whether the target controller can operate normally; when the test result is that the target controller can operate normally, controlling the target gear based on the target controller to obtain a second control result.

[0104] Embodiment 3

[0105] According to another aspect of the embodiments of the present invention, a computer-readable storage medium is further provided. The computer-readable storage medium includes a stored program, wherein when the program runs, it controls the device where the computer-readable storage medium is located to execute the control method of the target vehicle in the above method embodiment.

[0106] Embodiment 4

[0107] According to another aspect of the embodiments of the present invention, a processor is further provided. The processor is used to run a program, wherein when the program runs, it executes the control method of the target vehicle in the above method embodiment.

[0108] Embodiment 5

[0109] According to another aspect of the embodiments of the present invention, a target vehicle is further provided, including: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors execute the control method of the target vehicle in any one of the above.

[0110] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0111] In the above embodiments of the present invention, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0112] In the several embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in electrical or other forms.

[0113] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0114] In addition, in each embodiment of the present invention, each functional unit can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0115] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of the present invention. The foregoing storage medium includes: various media such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs that can store program codes.

[0116] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A control method for a target vehicle, characterized in that, it includes: In response to an unlocking instruction for the target vehicle, controlling the target vehicle to be in an unlocked state, where the unlocked state indicates that the target vehicle can be started; Based on the unlocked state, performing high-voltage power-on on the target vehicle to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; When the power-on result is that the target vehicle has successfully performed high-voltage power-on, controlling the target vehicle to be in a starting state, where the starting state is used to indicate that the target vehicle is in a state where it can travel; wherein, based on the unlocked state, performing high-voltage power-on on the target vehicle to obtain a power-on result, includes: Based on the unlocked state, starting the target controller of the target vehicle; Obtaining the state of the target vehicle, the state at least includes: the state of the front engine hood and whether the vehicle is currently in a maintenance mode; Based on the target controller and the state of the target vehicle, performing high-voltage power-on on the target vehicle to obtain the power-on result; wherein, based on the target controller and the state of the target vehicle, performing high-voltage power-on on the target vehicle to obtain the power-on result, includes: controlling a target relay based on the target controller to obtain a first control result, and based on the first control result, determining the power-on result, where the first control result is used to indicate whether the target relay has been successfully closed, and the target relay includes: a main negative relay, a pre-charge relay, and a main positive relay; The method further includes: performing a pre-charge verification on the pre-charge relay to obtain a pre-charge verification result, and controlling the main positive relay based on the pre-charge verification result, where the pre-charge verification result is used to characterize whether the safety voltage of the pre-charge relay is within a normal range; Performing a pre-charge verification on the pre-charge relay to obtain a pre-charge verification result, includes: controlling the pre-charge relay and the main positive relay to close, and obtaining the voltage change difference corresponding to the bus capacitor voltage, and the sampling voltage difference across the main positive relay, and constructing the pre-charge verification result based on the voltage change difference and the sampling voltage difference.

2. The method according to claim 1, characterized in that, Based on the first control result, determining the power-on result, includes: When the first control result is that the target relay has been successfully closed, performing high-voltage power-on on the target vehicle based on the high-voltage power-on mode to obtain the power-on result.

3. The method according to claim 2, characterized in that, Based on the target controller, controlling the target relay to obtain a first control result, includes: Closing the main negative relay to obtain a first closed state, where the first closed state is used to indicate whether the main negative relay has been successfully closed; When the first closed state is that the main negative relay has been successfully closed, closing the pre-charge relay to obtain a second closed state, where the second closed state is used to indicate whether the pre-charge relay has been successfully closed; When the second closed state indicates that the main negative relay is successfully closed, close the main positive relay to obtain a third closed state, where the third closed state is used to indicate whether the main positive relay is successfully closed; Based on whether the third closed state indicates that the main positive relay is successfully closed, determine that the first control result is to successfully turn off the target relay.

4. The method according to claim 3, wherein, before closing the main negative relay to obtain a first closed state, the method further includes: judging whether the main negative relay, the pre-charge relay, and the main positive relay are all in an open state; when the main negative relay, the pre-charge relay, and the main positive relay are all in an open state, close the main negative relay to obtain the first closed state.

5. The method according to claim 2, wherein, when the first control result is to successfully turn off the target relay, perform high-voltage power-on on the target vehicle based on the high-voltage power-on mode to obtain a power-on result, including: when the first control result is to successfully turn off the target relay, retrieve the working state of the target converter to obtain a retrieval result, where the retrieval result is used to indicate whether the working state of the target converter is successfully retrieved; when the retrieval result is that the working state of the target converter is successfully retrieved, perform high-voltage power-on on the target vehicle to obtain the power-on result.

6. The method according to claim 1, wherein, the method further includes: acquire the hood state and the maintenance state of the target vehicle, where the hood state is used to indicate whether the hood of the target vehicle is closed, and the maintenance state is used to indicate whether the target vehicle is under maintenance; when the hood state is that the target vehicle has the hood closed and the maintenance state is that the target vehicle is not under maintenance, perform high-voltage power-on on the target vehicle based on the unlocking state to obtain the power-on result.

7. The method according to claim 1, wherein, before performing high-voltage power-on on the target vehicle based on the state of the target controller and the target vehicle to obtain the power-on result, it includes: control the target gear based on the target controller to obtain a second control result, where the second control result is used to perform low-voltage power-on on the target vehicle.

8. The method according to claim 7, wherein, before controlling the target gear based on the target controller to obtain a second control result, the method further includes: test the target controller to obtain a test result, where the test result is used to indicate whether the target controller can operate normally; when the test result is that the target controller can operate normally, control the target gear based on the target controller to obtain the second control result.

9. A control device for a target vehicle, wherein, comprises: The first control module is configured to control the target vehicle to be in an unlocked state in response to an unlocking instruction for the target vehicle, where the unlocked state indicates that the target vehicle can be started; The power-on module is configured to perform high-voltage power-on on the target vehicle based on the unlocked state to obtain a power-on result, where the power-on result is used to indicate whether the target vehicle has successfully performed high-voltage power-on; The second control module is configured to control the target vehicle to be in a starting state when the power-on result is that the target vehicle has successfully performed high-voltage power-on, where the starting state is used to indicate that the target vehicle is in a state capable of traveling; The power-on module is further configured to: start the target controller of the target vehicle based on the unlocked state; obtain the state of the target vehicle, where the state at least includes: the state of the front engine hood and whether the vehicle is currently in a maintenance mode; perform high-voltage power-on on the target vehicle based on the target controller and the state of the target vehicle to obtain the power-on result; The power-on module is further configured to: control the target relay based on the target controller to obtain a first control result, and determine the power-on result based on the first control result, where the first control result is used to indicate whether the target relay has been successfully closed, and the target relay includes: a main negative relay, a pre-charge relay, and a main positive relay; The device is further configured to: perform a pre-charge verification on the pre-charge relay to obtain a pre-charge verification result, and control the main positive relay based on the pre-charge verification result, where the pre-charge verification result is used to characterize whether the safety voltage of the pre-charge relay is within the normal range; The device is further configured to: control the pre-charge relay and the main positive relay to close, and obtain the voltage change difference corresponding to the bus capacitor voltage and the sampling voltage difference across the main positive relay, and construct the pre-charge verification result based on the voltage change difference and the sampling voltage difference.

10. A computer-readable storage medium, characterized in that, the computer-readable storage medium includes a stored program, where when the program runs, it controls the device where the computer-readable storage medium is located to execute the control method for the target vehicle according to any one of claims 1 to 8.

11. A target vehicle, characterized in that, it includes: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors execute the control method for the target vehicle according to any one of claims 1 to 8.

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