Control method and device of hybrid power vehicle and electronic equipment

Abstract

The invention relates to the technical field of vehicle control, and provides a control method and device of a hybrid vehicle and electronic equipment. The method comprises the steps of determining collision prediction time between a target vehicle and other vehicles under the condition that the other vehicles exist in a preset range of the target vehicle; under the condition that the collision prediction time is shorter than the first preset collision time and longer than the second preset collision time, a target working mode of the target vehicle is determined, and the working state of at least one component in a power assembly system of the target vehicle is controlled to be adjusted to a first target working state; under the condition that the collision prediction time is not larger than second preset collision time and larger than zero, the working state of at least one component in the power assembly system is controlled to be adjusted to a second target working state based on the current working mode of the target vehicle; according to the method provided by the invention, the safety of driving the target vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a control method, device and electronic equipment for a hybrid vehicle. Background Art

[0002] Vehicle collisions occur frequently in daily traffic. Most traditional fuel vehicles or hybrid vehicles will experience broken oil pipes, oil leakage, and abnormal increase in motor controller voltage after a collision, which may lead to vehicle fires and explosions, resulting in casualties and other accidents.

[0003] In the prior art, when a vehicle collision occurs, the vehicle's hardware is controlled by various controllers on the vehicle to switch operating modes. However, the process of switching operating modes is relatively delayed, especially when the vehicle collides at high speed, which may cause the vehicle to catch fire or explode, or trigger a hardware failure, posing a major safety hazard. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a control method, device and electronic device for a hybrid vehicle to solve the problem in the prior art that a vehicle collision easily causes the vehicle to catch fire or explode or trigger a hardware failure.

[0005] According to a first aspect of an embodiment of the present application, a control method for a hybrid vehicle is provided, comprising:

[0006] In the case where there are other vehicles within a preset range of the target vehicle, determining a predicted collision time between the target vehicle and the other vehicles;

[0007] When the collision prediction time is less than the first preset collision time and greater than the second preset collision time, determining a target operating mode of the target vehicle, and controlling the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to a first target operating state in the target operating mode to reduce the total output power value of the powertrain system, the target operating mode being a series mode or a pure electric mode;

[0008] When the collision prediction time is not greater than the second preset collision time and greater than zero, based on the current working mode of the target vehicle, controlling the working state of at least one component in the powertrain system to be adjusted to a second target working state, so as to reduce the total output power value of the powertrain system;

[0009] The total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

[0010] According to a second aspect of an embodiment of the present application, a control device for a hybrid vehicle is provided, comprising:

[0011] A prediction module, configured to determine a predicted collision time between the target vehicle and the other vehicle when there are other vehicles within a preset range of the target vehicle;

[0012] a first processing module configured to determine a target operating mode of the target vehicle when the collision prediction time is less than a first preset collision time and greater than a second preset collision time, and to control the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to a first target operating state in the target operating mode to reduce a total output power value of the powertrain system, wherein the target operating mode is a series mode or a pure electric mode;

[0013] a second processing module configured to, when the collision prediction time is not greater than a second preset collision time and greater than zero, control the operating state of at least one component in the powertrain system to be adjusted to a second target operating state based on a current operating mode of the target vehicle, so as to reduce a total output power value of the powertrain system;

[0014] The total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

[0015] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0016] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0017] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: when there are other vehicles within a preset range of the target vehicle, the collision prediction time between the target vehicle and the other vehicles is determined; when the collision prediction time is less than a first preset collision time and greater than a second preset collision time, the target operating mode of the target vehicle is determined, and the operating state of at least one component in the powertrain system of the target vehicle is controlled to be adjusted to a first target operating state under the target operating mode, thereby reducing the total output power value of the powertrain system; when the collision prediction time is not greater than the second preset collision time and greater than zero, according to the current operating mode of the target vehicle, the operating state of at least one component in the powertrain system is controlled to be adjusted to a second target operating state, thereby reducing the total output power value of the powertrain system, and the total output power reduction value corresponding to the second target operating state is greater than the total output power reduction value corresponding to the first target operating state. It is achieved that without adding parts, the vehicle operating mode can be controlled through the collision prediction time and the powertrain system can be controlled to execute the emergency demand of collision warning, thereby reducing the total output power value of the powertrain system, thereby avoiding problems such as engine oil leakage, fire or explosion during a collision. It can also avoid the excessive controller bus voltage caused by excessive speed or torque of components in the powertrain system, which may lead to hardware failure, thereby improving the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a flow chart of a control method for a hybrid vehicle provided in an embodiment of the present application;

[0020] Figure 2 is a flow chart provided by an embodiment of the present application when the collision prediction time is not greater than the second preset collision time and greater than zero;

[0021] Figure 3 is a schematic diagram of a control device for a hybrid vehicle provided in an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0024] A control method and device for a hybrid vehicle according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0025] In the prior art, when a vehicle collides, a Controller Area Network (CAN) bus sends a collision signal and a collision validity signal, and an engine controller receives the relevant CAN signal and immediately starts to cut off the fuel supply, while the generator switches the working mode.

[0026] The overall time from the collision to the engine shutdown is relatively long, especially when the vehicle collides at high speed, the delay is even greater, and because the engine speed is relatively high, the delay time is relatively long. If the engine continues to ignite while oil leaks, it is easy to cause a fire or explosion. In addition, when driving at high speed, the engine speed is relatively high when the oil is cut off. At this time, the generator mechanically connected to the engine flywheel may have just switched to high-voltage standby mode. The high-speed rotation of the generator will generate back electromotive force, which is easy to cause the motor controller bus voltage to be too high, thereby triggering a hardware failure of the generator controller.

[0027] In response to the above problems, the control method of a hybrid vehicle provided in the present application can monitor the vehicle condition information of other vehicles within a preset range of the target vehicle in real time through the on-board millimeter-wave radar during the driving process of the target vehicle, so as to make a collision warning judgment. According to the collision warning judgment, the target operating mode of the target vehicle is controlled in advance to be a series mode or a pure electric mode, and the powertrain system is controlled in advance to reduce the total output power value, that is, the powertrain components are controlled in advance to perform operations such as clutch separation, engine fuel cut-off, and generator working state switching, so as to optimize the problems such as fire during vehicle collision and hardware failure caused by motor controller overload, thereby improving driving safety.

[0028] Figure 1 It is a flow chart of a control method for a hybrid vehicle provided in an embodiment of the present application. Figure 1 The control method of the hybrid vehicle can be executed by a terminal device, a controller on the target vehicle, a cloud or a server. Figure 1 As shown, the control method of the hybrid vehicle includes the following steps:

[0029] S101, when there are other vehicles within a preset range of a target vehicle, determining a collision prediction time between the target vehicle and the other vehicles.

[0030] Specifically, to determine whether there are other vehicles within a preset range of the target vehicle, the sensor system of the target vehicle can be used to monitor whether there are other vehicles within the preset range. The sensor system includes millimeter wave radar, lidar, camera, etc.

[0031] Among them, the preset range can be determined according to the safe vehicle distance, that is, if the target vehicle is traveling at a high speed (the speed exceeds 100 kilometers per hour), the safe vehicle distance before and after the target vehicle is greater than 100 meters, then the preset range before and after the target vehicle can be 100 meters; if the target vehicle is traveling at a low speed (the speed is less than 100 kilometers per hour), the safe vehicle distance before and after the target vehicle must not be less than 50 meters, then the preset range before and after the target vehicle can be 50 meters, and the preset range in the left and right directions of the target vehicle can be set to a maximum of 2 meters.

[0032] When determining the collision prediction time between the target vehicle and other vehicles, it can be calculated based on the speed, acceleration and real-time vehicle distance of the target vehicle and other vehicles.

[0033] Furthermore, when there are multiple other vehicles within the preset range of the target vehicle, the minimum value of the collision prediction time between each other vehicle and the target vehicle is selected as the collision prediction time in this embodiment to determine the target working mode, control the powertrain system and perform subsequent operations.

[0034] According to the predicted collision time between other vehicles and the target vehicle, a clear collision warning can be issued, and support can be provided for the subsequent update of the working mode of the target vehicle, so as to maximize the avoidance of collision or reduce the loss after the collision occurs.

[0035] S102, when the collision prediction time is less than a first preset collision time and greater than a second preset collision time, determining a target operating mode of the target vehicle, and controlling the operating state of at least one component in a powertrain system of the target vehicle to be adjusted to a first target operating state under the target operating mode to reduce a total output power value of the powertrain system.

[0036] Among them, the target working mode is series mode or pure electric mode.

[0037] Specifically, the collision prediction time is compared with the first preset collision time and the second preset collision time. When the collision prediction time is less than the first preset collision time and greater than the second preset collision time, it indicates that there is a potential collision risk between the target vehicle and other vehicles at this time, but there is more than enough time to execute mitigating measures.

[0038] The first preset collision time may be set to 2.7 seconds, the second preset collision time may be initially set to 1.2 seconds, and the second preset collision time is updated according to the driving condition of the target vehicle.

[0039] In addition, in the series mode, the internal combustion engine of the target vehicle directly drives the generator through a fixed-ratio transmission device. The electric energy generated by the generator is stored in the battery, and the vehicle is propelled by the electric motor. The internal combustion engine continues to run, and the electric motor provides auxiliary acceleration or serves as the main driving force when needed; in the parallel mode, the internal combustion engine and the electric motor of the target vehicle can work independently or together to drive the vehicle. The energy generated by the internal combustion engine can be used directly for driving, or it can be converted into electrical energy and stored in the battery; in the pure electric mode, the target vehicle is powered only by the battery pack and driven by the electric motor.

[0040] When the collision prediction time reaches certain conditions, the target operating mode of the target vehicle is determined to be series mode or pure electric mode, and the collision warning is used to intelligently control the vehicle operating mode. When there is a risk of collision, the power output of the target vehicle can be reduced to avoid problems such as engine oil leakage and fire during the collision process.

[0041] In addition, under the target operating mode, the operating state of at least one component in the powertrain system of the target vehicle is controlled to be adjusted to a first target operating state, thereby reducing the total output power value of the powertrain system, wherein the powertrain system includes an engine, a generator, a drive motor and a clutch.

[0042] The powertrain system refers to the system in the vehicle that is responsible for generating and transmitting power, and is used to convert energy into mechanical energy to drive the vehicle forward. The total output power value of the powertrain system refers to the total energy that the system can output per unit time, which determines the key performance indicators such as the maximum speed and acceleration performance of the vehicle. It is usually obtained by measuring the power output of each component of the powertrain system and summing them up.

[0043] Furthermore, when the collision prediction time is greater than the first preset collision time, it indicates that the relative distance between the target vehicle and other vehicles is within a safe range. At this time, the current working mode of the target vehicle is maintained without switching, and the powertrain system is also maintained in the current working state.

[0044] When the collision prediction time reaches a certain condition, the operating state of at least one component in the powertrain system of the target vehicle is adjusted to the first target operating state to reduce the total output power of the powertrain system. This can to a certain extent avoid the excessive bus voltage of the controller caused by excessive or large torque during the collision, causing hardware failure of the controller.

[0045] S103, when the collision prediction time is not greater than the second preset collision time and greater than zero, based on the current working mode of the target vehicle, controlling the working state of at least one component in the powertrain system to be adjusted to a second target working state, so as to reduce the total output power value of the powertrain system;

[0046] The total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

[0047] Specifically, when the collision prediction time is not greater than the second preset collision time and greater than zero, it indicates that the current collision risk is relatively high and emergency avoidance measures need to be taken.

[0048] According to the current working mode of the target vehicle, the control strategy of controlling the powertrain system is determined, that is, the working state of at least one component in the powertrain system needs to be adjusted to a second target working state, wherein the second target working state can achieve a greater total output power reduction value compared to the first target working state, thereby slowing down the vehicle speed more quickly, avoiding accidents such as engine oil leakage, fire, explosion, etc. during the collision, and also avoiding controller hardware failure, thereby avoiding a series of accidents caused by the collision of the target vehicle.

[0049] For example, when the target vehicle is driving, it is detected that another vehicle in front of it suddenly decelerates. The collision prediction time is calculated to be less than the first preset collision time and greater than the second preset collision time. The operating mode of the target vehicle is switched to the series mode, and the operating states of the engine and the motor are adjusted to the first target operating state to reduce the total output power of the powertrain system to slow down the vehicle speed and avoid collision. If the collision prediction time is further shortened to no more than the second preset collision time, the operating state of the powertrain system is further adjusted to the second target operating state to further reduce the total output power of the powertrain system to ensure driving safety.

[0050] Furthermore, the collision hazard level can be determined according to the collision prediction time. When the collision prediction time is greater than or equal to a first preset collision time, the collision hazard level is determined as a third collision hazard level; when the collision prediction time is less than the first preset collision time and greater than the second preset collision time, the collision hazard level is determined as a second collision hazard level; when the collision prediction time is not greater than the second preset collision time and greater than zero, the collision hazard level is determined as a first collision hazard level, wherein the order of the hazard levels from low to high is: third collision hazard level, second collision hazard level, first collision hazard level.

[0051] According to the technical solution provided in the embodiment of the present application, the power output is reduced in advance by referring to the collision prediction time, thereby reducing the risk of potential collision and improving the energy efficiency management level. The vehicle operating mode is controlled according to the collision prediction time of different urgency levels and the working state of the powertrain system is flexibly adjusted. It is possible to maintain the smooth operation of the target vehicle as much as possible while ensuring safety, and solves the problem of hardware failure caused by excessive bus voltage of the generator controller during the engine fuel cut-off and shutdown process in the high-speed collision scenario of hybrid vehicles.

[0052] In some embodiments, when determining the predicted collision time between the target vehicle and other vehicles, the speeds and accelerations of the target vehicle and other vehicles, and the relative distances between the other vehicles and the target vehicle may be obtained, and then the predicted collision time when the other vehicles collide with the target vehicle may be predicted based on the speeds and accelerations of the target vehicle and other vehicles, and the relative distances between the other vehicles and the target vehicle. Specifically, the predicted collision time may be determined by the following formula:

[0053]

[0054] Among them, t represents the collision prediction time, v1 represents the speed of other vehicles, v2 represents the speed of the target vehicle, a1 represents the acceleration of other vehicles, a2 represents the acceleration of the target vehicle, and d represents the relative distance.

[0055] The collision prediction time between the target vehicle and other vehicles is calculated by the above parameters, which ensures the calculation accuracy of the collision prediction time.

[0056] In some embodiments, determining a target operating mode of a target vehicle includes:

[0057] When the current working mode of the target vehicle is the parallel mode, determining the target working mode to be the series mode, and controlling the clutch to be disconnected and converting the current working mode to the series mode;

[0058] When the current working mode is the series mode, determining the target working mode to be the series mode, and controlling to maintain the series mode;

[0059] When the current working mode is the pure electric mode, the target working mode is determined to be the pure electric mode, and the pure electric mode is controlled to be maintained.

[0060] Specifically, the operating mode of the target vehicle can determine the vehicle's power source, energy distribution and overall performance. When the current operating mode of the target vehicle is the parallel mode, that is, the engine and the electric motor jointly provide power for the target vehicle, at this time, if the collision prediction time is not greater than the second preset collision time and is greater than zero, the target operating mode is determined to be the series mode, that is, the target vehicle is controlled to switch from the parallel mode to the series mode, and the controller sends a clutch disengagement command to control the clutch to disconnect and cut off the direct connection between the generator and the wheels, thereby reducing power output and avoiding failure of the motor controller during the collision.

[0061] When the current operating mode of the target vehicle is the series mode, at this time, if the collision prediction time is not greater than the second preset collision time and is greater than zero, maintaining the current operating mode can maintain the stability and performance of the target vehicle and avoid energy loss and component wear caused by unnecessary mode switching.

[0062] When the current target vehicle's operating mode is pure electric mode, at this time, if the collision prediction time is not greater than the second preset collision time and is greater than zero, the current operating mode is maintained. Maintaining the current operating mode can maintain less power output, thereby avoiding the problem of motor controller hardware failure.

[0063] Among them, the pure electric mode is driven by an electric motor and does not rely on the engine.

[0064] According to the technical solution provided in the embodiment of the present application, the target operating mode can be determined according to the current operating mode of the target vehicle, and switched according to the target operating mode, so that the operating mode of the target vehicle is a series mode or a pure electric mode, thereby making the power output of the vehicle relatively small, avoiding the failure problem of the motor controller during a collision.

[0065] In some embodiments, the powertrain system includes an engine, a generator, a drive motor, and a clutch;

[0066] Controlling the operating state of at least one component in the powertrain system of the target vehicle to adjust to a first target operating state in the target operating mode includes:

[0067] When the target working mode is the series mode, the current remaining power of the target vehicle and the power generation power of the powertrain system are obtained; if the current remaining power is lower than the preset remaining threshold value and the power generation power is greater than the preset power generation power, the power generation level of the generator is controlled to be reduced to the minimum power generation level, the torque of the engine is reduced to the preset torque, the speed of the generator is reduced to the preset speed, and the power of the drive motor is controlled to be reduced to the first preset low power;

[0068] When the target operating mode is the pure electric mode, the power of the drive motor is controlled to be reduced to a first preset low power.

[0069] Specifically, the powertrain system integrates multiple key components such as the engine, generator, drive motor and clutch, which work together to meet the vehicle's power requirements under different operating conditions. The powertrain system can flexibly switch between multiple operating modes through corresponding control strategies, such as parallel mode, series mode, pure electric mode, etc.

[0070] When the target working mode is the series mode, the current remaining power of the target vehicle and the power generation power of the powertrain are obtained, wherein the acquisition method may be to directly read the data of the corresponding sensors.

[0071] In addition, when it is detected that the current remaining power of the target vehicle is lower than the preset remaining threshold, indicating that the battery power of the target vehicle is insufficient, and at the same time, the power generation is greater than the preset power generation threshold, that is, the current power generation is high but may exceed the actual demand, the power generation level of the generator is adjusted to the lowest, such as zero-level power generation, to reduce the energy output, and reduce the engine torque to the preset torque, reduce the generator speed to the preset speed, and control the drive motor power to the first preset low power. It realizes the control of the generator to reduce power generation, reduce the generator speed and engine torque in advance before the collision occurs, optimizes the motor controller hardware failure problem, and avoids the engine oil leakage, fire and explosion during the collision process.

[0072] Among them, during the adjustment process, in addition to the power generation level of the generator, the torque of the engine, the speed of the generator and the power of the drive motor can be adjusted in a gradient reduction manner. For example, the torque of the engine, the speed of the generator and the power of the drive motor can be reduced by 15%. The preset torque can be 15 Nm, the preset speed can be 1000 rpm, and the first preset power can be 80 kilowatts. Among them, the preset torque, the preset speed and the first preset power can be calibrated according to the conclusions obtained from multiple tests, and the minimum power generation level, the preset torque, the preset speed and the first preset power are respectively the first target working states of the corresponding components in the powertrain system.

[0073] In addition, when the target operating mode is the pure electric mode, the power of the drive motor can be reduced to a first preset low power to reduce the power output of the powertrain system, thereby avoiding accidents such as fire and explosion caused by collision between the target vehicle and other vehicles.

[0074] For example, in one example, the target vehicle is traveling in series mode and detects that the current remaining power is 20% (lower than the preset 30% remaining threshold), and the power generation is 80kW (greater than the preset 60kW power generation threshold). At this time, the power generation level of the generator is adjusted to the lowest level, the engine torque is reduced to 200 Nm (preset torque), the speed is reduced to 1500 rpm (preset speed), and the power of the drive motor is controlled to be reduced to 50 kilowatts (first preset low power).

[0075] According to the technical solution provided in the embodiments of the present application, when it is predicted that the target vehicle and other vehicles may collide, in series mode or pure electric mode, the output energy of the generator, engine and drive motor is controlled to be reduced, which can reduce the operating power of the engine and generator, reduce the risks of fire, explosion, etc. caused by mechanical failure or overheating, and improve the safety of the vehicle and passengers.

[0076] In some embodiments, the powertrain system includes an engine, a generator, a drive motor, and a clutch;

[0077] Based on the current operating mode of the target vehicle, controlling the operating mode of at least one component in the powertrain system to be adjusted to a second target operating state includes:

[0078] When the current working mode is the parallel mode, the clutch is controlled to be disconnected, the engine is cut off from fuel and stopped, the drive motor is operated at a second preset low power, and the engine fuel injection and ignition are prohibited;

[0079] When the current working mode is the series mode, the engine is controlled to cut off fuel and stop, the drive motor is operated at a second preset low power, and the engine fuel injection and ignition are prohibited;

[0080] When the operating mode of the target vehicle is the pure electric mode, the drive motor is controlled to operate at a second preset low power.

[0081] Among them, when the target vehicle is in different working modes, the components of its powertrain system also need to be adjusted accordingly.

[0082] According to the current working mode of the target vehicle, the following strategies may be adopted to adjust the working state of at least one component in the powertrain system to the second target working state:

[0083] Parallel mode: When the collision prediction time is not greater than the second preset collision time and greater than zero, that is, the target vehicle is about to collide, and the target vehicle is in parallel mode, the clutch is controlled to be disconnected to cut off the direct connection between the engine and the drive system. At the same time, the engine is controlled to cut off oil and stop to prevent the risk of continued power output. At this time, the drive motor is controlled to operate in the preset second low power mode so that the target vehicle can slow down or stop slowly and smoothly. In addition, the engine's fuel injection and ignition operations are prohibited to prevent it from accidentally starting.

[0084] Among them, generally speaking, the collision prediction time of the target vehicle is switched from the processing stage greater than the second preset collision time to the processing stage not greater than the second preset collision time, but there may be other vehicles with too fast speed and acceleration, resulting in a very short time greater than the second preset collision time and less than the first preset collision time. In this case, the various components of the powertrain system are directly controlled according to the stage not greater than the second preset collision time.

[0085] Series mode: When the collision prediction time is not greater than the second preset collision time and greater than zero, that is, the target vehicle is about to collide, and the target vehicle is in series mode, the engine is controlled to cut off fuel and stop, and the drive motor operates in the second preset low-power mode, which is similar to the parallel mode, and the engine's fuel injection and ignition operations are prohibited.

[0086] Pure electric mode: When the predicted collision time is not greater than the second preset collision time and is greater than zero, that is, the target vehicle is about to collide, and the target vehicle is in pure electric mode, since the vehicle is already in battery power, the drive motor is directly controlled to operate in the second preset low-power mode to reduce the vehicle's speed and kinetic energy, thereby reducing the impact force during the collision.

[0087] The second preset low power may be 15 kilowatts, and the second preset low power may be calibrated by itself or may be calibrated based on data obtained from multiple tests.

[0088] Furthermore, the second preset low power may be lower than the first preset low power.

[0089] According to the technical solution provided in the embodiment of the present application, the output power of the powertrain system can be reduced, so that the engine and generator of the target vehicle perform less work, and the hardware failure of the controller caused by excessive bus voltage of the controller can be minimized during the collision between the target vehicle and other vehicles. It can also avoid accidents such as engine oil leakage, fire and explosion during the collision, reduce casualties, improve driving safety, and enhance the driving experience of driving the target vehicle.

[0090] In some embodiments, after controlling the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to the first target operating state in the target operating mode, the method further includes:

[0091] When a collision state signal indicating that a collision has occurred is received from a controller area network CAN bus and the validity signal is valid, the operating states of the generator and the drive motor are controlled to be adjusted to a low-voltage standby state in the order of high-voltage standby, pressure relief, and low-voltage standby states;

[0092] When a collision state signal indicating that no collision has occurred currently is received from the CAN bus and the validity signal is valid, determining a maintenance time of the collision state signal indicating that no collision has occurred currently, the maintenance time being a duration from the time when the first collision warning signal is received to the current moment, the first collision warning signal being issued when it is detected that the collision prediction time is less than the first preset collision time;

[0093] When the maintenance time is greater than the preset collision release time threshold or the collision prediction time is updated to be greater than or equal to the first preset collision time, the working state of each component in the powertrain system is restored to the working state before receiving the first collision warning signal, and when the target vehicle meets the conditions of the parallel mode, the clutch is controlled to engage, and the working mode of the target vehicle is controlled to switch to the parallel mode.

[0094] Specifically, when the collision prediction time is less than the first preset collision time, the working state of the powertrain components can be intelligently controlled based on the collision state signal fed back by the CAN bus and the first target working state, or based on the collision state signal fed back by the CAN bus and the second target working state.

[0095] When the CAN bus receives data from various sensors of the vehicle and determines that a collision has occurred, a collision status signal is sent. If the validity signal corresponding to the collision status signal is valid, it indicates that a collision has indeed occurred, and the corresponding control strategy is activated, that is, the working state of the generator and the drive motor is adjusted in the order of high-voltage standby, pressure relief, and low-voltage standby to enter the low-voltage standby state.

[0096] Among them, the high-voltage standby state is used to ensure that the power supply can be quickly cut off in an emergency, the pressure relief state is used to release the pressure that may exist in the generator and the drive motor, and the low-voltage standby state is used to reduce secondary damage caused by power failure. The generator is switched from speed control to high-voltage standby, pressure relief, and low-voltage standby states in sequence, and the drive motor is switched from torque control to high-voltage standby, pressure relief, and low-voltage standby states in sequence, which improves the safety of the generator and the drive motor.

[0097] On the other hand, if the CAN bus receives a collision status signal indicating that no collision has occurred at present, and the validity signal of the signal is also valid, another processing flow is entered, that is, determining the maintenance time of the no-collision signal, wherein the maintenance time is the duration from the time when the first collision warning signal is received (that is, the signal issued when it is detected that the collision prediction time is less than the first preset collision time) to the current moment.

[0098] In addition, when the above-mentioned maintenance time exceeds the preset collision release time threshold, or the collision prediction time is updated to be greater than or equal to the first preset collision time, or the collision prediction time is updated to be less than zero, indicating that the collision risk has been eliminated, the working state of each component in the powertrain system is restored to the state before the first collision warning signal is received, so that the target vehicle can be restored to a normal driving state as soon as possible, reducing performance losses caused by false alarms or short-term risks.

[0099] Herein, restoring to the state before receiving the first collision warning signal may include resuming fuel injection of the engine, releasing power limitation of the generator, and the like.

[0100] In addition, if the target vehicle meets the conditions of the parallel mode at some point in the future or currently (for example, the battery is fully charged, the engine and the motor are in good working condition, etc.), the clutch is controlled to engage and the operating mode of the target vehicle is switched to the parallel mode. The parallel mode allows the engine and the motor to provide power to the vehicle at the same time, thereby improving the acceleration performance and fuel efficiency of the target vehicle.

[0101] According to the technical solution provided in the embodiment of the present application, when a collision occurs, by adjusting the working state of the generator and the drive motor to low-voltage standby, secondary damage caused by power failure can be reduced and the safety of passengers and vehicles can be protected. For collision warnings that have not occurred, by determining the maintenance time and updating the collision prediction time, the working state of the powertrain system can be restored as soon as possible, and after the collision risk is eliminated and the conditions of the parallel mode are met, it can automatically switch to the parallel mode, thereby improving the acceleration performance and fuel efficiency of the vehicle, providing users with a better driving experience.

[0102] In some embodiments, Figure 2 As shown, when the collision prediction time is not greater than the second preset collision time and greater than zero, it also includes:

[0103] S201: upon receiving a collision status signal sent by the CAN bus indicating that a collision has occurred, obtaining a collision time difference between the triggering of the second collision warning signal and the occurrence of the collision, and obtaining a relative speed, relative acceleration and relative distance between the target vehicle and the collided vehicle when the second collision warning signal is triggered, wherein the second collision warning signal is issued when it is detected that the collision prediction time is not greater than the second preset collision time;

[0104] S202: determining a correction coefficient of a second preset collision time based on the collision time difference, associating the correction coefficient with the relative speed, relative acceleration and relative distance, and updating the second preset collision time based on the correction coefficient.

[0105] Specifically, when the collision prediction time is not greater than the second preset collision time and greater than zero, that is, when the warning module feeds back a level 1 collision risk level, the second collision warning time can be corrected based on the collision status signal generated by the CAN bus.

[0106] When the collision prediction time is not greater than the second preset collision time and greater than zero, if a collision status signal indicating that a collision has occurred is received from the CAN bus, a collision time difference between the second collision warning signal and the occurrence of the collision is obtained.

[0107] The second collision warning signal is a signal issued when it is detected that the collision prediction time is not greater than the second preset collision time.

[0108] It should be noted that when the second collision warning signal is triggered, the timing module of the self-learning module is activated. If the collision status signal is set to 1, the collision time difference Δt between the triggering of the second collision warning signal and the occurrence of the collision is accumulated and stored; if the collision status signal has not been set to 1, the timing module is cleared and reset after accumulating a certain period of time to accumulate the collision time difference Δt.

[0109] At the same time, the relative speed, relative acceleration and relative distance between the target and the collided vehicle are obtained when the second collision warning signal is triggered. The relative speed can reflect the closing speed between the target vehicle and the collided vehicle, the relative acceleration reflects the acceleration change information between the target vehicle and the collided vehicle, and the relative distance reflects the distance information between the target vehicle and the collided vehicle.

[0110] In addition, a correction coefficient for the second preset collision time is determined based on the collision time difference, and the correction coefficient is associated with the relative speed, relative acceleration and relative distance, and the second preset collision time is updated based on the correction coefficient, wherein the correction coefficient can reflect the difference between the predicted and actual collision conditions, and the second preset collision time updated based on the correction coefficient can improve the accuracy of future predictions.

[0111] According to the technical solution provided by the embodiment of the present application, the correction coefficient can be determined by obtaining data such as the collision time difference, relative speed, relative acceleration and relative distance, and the correction coefficient is associated with the relative speed, relative acceleration and relative distance. The second preset collision time is updated according to the correction coefficient to achieve targeted dynamic adjustment and optimize the control strategy of the target vehicle, so as to more accurately predict future collision risks, take corresponding control strategies in advance, reduce the severity of the collision, and protect the safety of passengers. At the same time, the second preset collision time is updated according to the collision coefficient to adapt to different driving environments and conditions, improve overall performance and reliability, and thus improve the safety and reliability of the target vehicle.

[0112] In some embodiments, determining a correction factor of the second preset collision time based on the collision time difference, and associating the correction factor with the relative speed, the relative acceleration, and the relative distance includes:

[0113] Determine a predicted difference between a preset safety reaction time and a collision time difference, and determine a quotient of the predicted difference and the preset safety reaction time to obtain a correction coefficient corresponding to the current second preset collision time;

[0114] The relative speed, relative acceleration and relative distance are respectively mapped to a target relative speed interval in a preset relative speed interval set, a target relative acceleration interval in a preset relative acceleration interval set and a target relative distance interval in a preset relative distance interval set; the preset relative speed interval set, the preset relative acceleration interval set and the preset relative distance interval set are respectively obtained by dividing the preset relative speed range, the preset relative acceleration range and the preset relative distance range according to the corresponding preset step sizes;

[0115] The target relative speed interval, the target relative acceleration interval, the target relative distance interval and the correction coefficient are stored in association.

[0116] The difference between the preset safety reaction time and the collision time difference is determined as the predicted difference, which is used to characterize the time difference between the preset safety reaction time and the time from the triggering of the second collision warning signal to the occurrence of the collision, wherein the preset safety reaction time can be set to 1.2 seconds.

[0117] The predicted difference is divided by the preset safety reaction time to obtain a correction coefficient. The correction coefficient can reflect the comparison between the current situation and the ideal state (i.e., the preset safety reaction time), and is the degree to which the target vehicle needs to execute the corresponding instructions faster or slower. If the predicted difference is small, it indicates that the correction coefficient is large to shorten the second preset collision time. Conversely, if the predicted difference is large, it indicates that the correction coefficient is small to increase the second preset collision time.

[0118] Among them, the correction coefficient can be determined by the following formula:

[0119]

[0120] Among them, k i represents the correction coefficient, Δt represents the predicted difference, and T represents the preset safety response time.

[0121] In addition, in order to more accurately and quickly determine the second preset collision time of the target vehicle under different driving conditions, the relative speed, relative acceleration and relative distance can be respectively mapped to the target relative speed interval in the preset relative speed interval set, the target relative acceleration interval in the preset relative acceleration interval set and the target relative distance interval in the preset relative distance interval set, thereby establishing associations.

[0122] Among them, the preset relative speed interval set is obtained by dividing the preset relative speed range according to the preset step length, the preset relative acceleration interval set is obtained by dividing the preset relative acceleration range according to the preset step length, and the preset relative distance interval set is obtained by dividing the preset relative distance range according to the preset step length.

[0123] For example, in one example, the preset relative speed interval set and the preset relative distance interval set may include (-∞, -100], (-100, -75], (-75, -50], (-50, -25], (-25, 0], (0, 25], (25, 50], (50, 75], (75, 100], (100, +∞]; the preset relative acceleration interval set may include (-∞, -6], (-6, -4], (-4, -2], (-2, 0], (0, 2], (2, 4], (4, 6], (6, +∞].

[0124] In addition, the target relative speed interval, target relative acceleration interval, target relative distance interval and correction coefficient are stored in association, so that the warning and response strategies can be dynamically adjusted according to the current driving environment.

[0125] For example, if the current relative speed is 5 m / s, the relative acceleration is -2 m / s2, and the relative distance is 100 m, then the interval corresponding to the current relative speed is (0, 25], the interval corresponding to the relative acceleration is (-4, -2], and the interval corresponding to the relative distance is (75, 100]

[0126] Furthermore, when the relevant data of the collision warning (including relative speed, relative distance, relative acceleration, collision time difference and other data) increases, each interval can be regarded as a table, and the correction coefficient corresponding to the second preset collision time can be quickly located according to the table.

[0127] According to the technical solution provided in the embodiment of the present application, the correction coefficient of the corresponding second preset collision time can be determined according to the changes in relative speed, relative acceleration and relative distance under different driving environments to correct the second preset collision time, thereby improving the adaptability, comfort and stability to different road conditions and driving behaviors, and being able to provide users with timely and accurate warning information, so that users can enhance their trust in the target vehicle.

[0128] In some embodiments, updating the second preset collision time based on the correction factor includes:

[0129] Determine at least two correction coefficients corresponding to relative speed, relative acceleration and relative distance;

[0130] The product of the average value of at least two correction coefficients and the preset safety reaction time is determined as the correction time, and the sum of the current second preset collision time and the correction time is determined as the updated second preset collision time.

[0131] Specifically, determine whether the relative speed, relative acceleration and relative distance correspond to at least two correction coefficients. If so, determine the average value of all correction coefficients and use it as the corrected average value. The corrected average value can more comprehensively reflect the safety requirements in the current situation.

[0132] In addition, the product of the average value of at least two correction coefficients and the preset safety reaction time is determined, the product is determined as the correction time, the second preset collision time and the correction time are added to obtain an updated second preset collision time, wherein the second preset collision time is the second preset collision time corresponding to the relative speed, relative acceleration and relative distance, and the updated second preset collision time can more accurately assess the current driving risk and facilitate the adoption of corresponding safety measures.

[0133] Furthermore, the second preset collision time can be updated by the following formula:

[0134] T′2=t2+k i *T;

[0135] Wherein, t′2 is the updated second preset collision time, t2 is the second preset collision time, k i is the correction coefficient, and T is the preset safety response time.

[0136] According to the technical solution provided in the embodiment of the present application, it is possible to self-learn the correction coefficient and update the second preset collision time by comprehensively considering various factors, thereby optimizing the accuracy of the target vehicle collision warning, facilitating early warning or taking safety measures, thereby reducing the probability of accidents, improving driving safety performance and user experience, and enhancing the power and safety performance of the target vehicle.

[0137] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0138] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present application, which will not be described one by one here.

[0139] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0140] Figure 3 Schematic diagram of a control device for a hybrid vehicle provided in an embodiment of the present application. Figure 3 As shown, the control device of the hybrid vehicle includes: a prediction module 301, a first processing module 302, and a second processing module 303, wherein:

[0141] The prediction module 301 is configured to determine a collision prediction time between the target vehicle and the other vehicle when there are other vehicles within a preset range of the target vehicle;

[0142] The first processing module 302 is configured to determine a target operating mode of the target vehicle when the collision prediction time is less than a first preset collision time and greater than a second preset collision time, and control the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to a first target operating state in the target operating mode to reduce a total output power value of the powertrain system, wherein the target operating mode is a series mode or a pure electric mode;

[0143] The second processing module 303 is configured to control the working state of at least one component in the powertrain system to be adjusted to a second target working state based on the current working mode of the target vehicle, so as to reduce the total output power value of the powertrain system, when the collision prediction time is not greater than the second preset collision time and greater than zero;

[0144] The total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

[0145] In some embodiments, prediction module 301 is configured to:

[0146] When the current working mode of the target vehicle is the parallel mode, determining the target working mode to be the series mode, and controlling the clutch to be disconnected and converting the current working mode to the series mode;

[0147] When the current working mode is the series mode, determining the target working mode to be the series mode, and controlling to maintain the series mode;

[0148] When the current working mode is the pure electric mode, the target working mode is determined to be the pure electric mode, and the pure electric mode is controlled to be maintained.

[0149] In some embodiments, the powertrain system includes an engine, a generator, a drive motor, and a clutch;

[0150] The first processing module 302 is configured to:

[0151] When the target working mode is the series mode, the current remaining power of the target vehicle and the power generation power of the powertrain system are obtained; if the current remaining power is lower than the preset remaining threshold value and the power generation power is greater than the preset power generation power, the power generation level of the generator is controlled to be reduced to the minimum power generation level, the torque of the engine is reduced to the preset torque, the speed of the generator is reduced to the preset speed, and the power of the drive motor is controlled to be reduced to the first preset low power;

[0152] When the target operating mode is the pure electric mode, the power of the drive motor is controlled to be reduced to a first preset low power.

[0153] In some embodiments, the powertrain system includes an engine, a generator, a drive motor, and a clutch;

[0154] The second processing module 303 is configured to:

[0155] When the current working mode is the parallel mode, the clutch is controlled to be disconnected, the engine is cut off from fuel and stopped, the drive motor is operated at a second preset low power, and the engine fuel injection and ignition are prohibited;

[0156] When the current working mode is the series mode, the engine is controlled to cut off fuel and stop, the drive motor is operated at a second preset low power, and the engine fuel injection and ignition are prohibited;

[0157] When the operating mode of the target vehicle is the pure electric mode, the drive motor is controlled to operate at a second preset low power.

[0158] In some embodiments, after the first processing module 302 controls the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to the first target operating state in the target operating mode, the first processing module 302 is further configured to:

[0159] When a collision state signal indicating that a collision has occurred is received from a controller area network CAN bus and the validity signal is valid, the operating states of the generator and the drive motor are controlled to be adjusted to a low-voltage standby state in the order of high-voltage standby, pressure relief, and low-voltage standby states;

[0160] When a collision state signal indicating that no collision has occurred currently is received from the CAN bus and the validity signal is valid, determining a maintenance time of the collision state signal indicating that no collision has occurred currently, the maintenance time being a duration from the time when the first collision warning signal is received to the current moment, the first collision warning signal being issued when it is detected that the collision prediction time is less than the first preset collision time;

[0161] When the maintenance time is greater than the preset collision release time threshold or the collision prediction time is updated to be greater than or equal to the first preset collision time, the working state of each component in the powertrain system is restored to the working state before receiving the first collision warning signal, and when the target vehicle meets the conditions of the parallel mode, the clutch is controlled to engage, and the working mode of the target vehicle is controlled to switch to the parallel mode.

[0162] In some embodiments, when the collision prediction time is not greater than the second preset collision time and greater than zero, the second processing module 303 is further configured to:

[0163] When a collision status signal indicating that a collision has occurred is received from the CAN bus, a collision time difference between the triggering of the second collision warning signal and the occurrence of the collision is obtained, and a relative speed, relative acceleration and relative distance between the target vehicle and the collided vehicle when the second collision warning signal is triggered are obtained. The second collision warning signal is issued when it is detected that the collision prediction time is not greater than the second preset collision time;

[0164] A correction coefficient of the second preset collision time is determined based on the collision time difference, and the correction coefficient is associated with the relative speed, relative acceleration and relative distance, and the second preset collision time is updated based on the correction coefficient.

[0165] In some embodiments, the second processing module 303 is configured to:

[0166] Determine a predicted difference between a preset safety reaction time and a collision time difference, and determine a quotient of the predicted difference and the preset safety reaction time to obtain a correction coefficient corresponding to the current second preset collision time;

[0167] The relative speed, relative acceleration and relative distance are respectively mapped to a target relative speed interval in a preset relative speed interval set, a target relative acceleration interval in a preset relative acceleration interval set and a target relative distance interval in a preset relative distance interval set; the preset relative speed interval set, the preset relative acceleration interval set and the preset relative distance interval set are respectively obtained by dividing the preset relative speed range, the preset relative acceleration range and the preset relative distance range according to the corresponding preset step sizes;

[0168] The target relative speed interval, the target relative acceleration interval, the target relative distance interval and the correction coefficient are stored in association.

[0169] In some embodiments, the second processing module 303 is configured to:

[0170] Determine at least two correction coefficients corresponding to relative speed, relative acceleration and relative distance;

[0171] The product of the average value of at least two correction coefficients and the preset safety reaction time is determined as the correction time, and the sum of the current second preset collision time and the correction time is determined as the updated second preset collision time.

[0172] Figure 4 Schematic diagram of an electronic device 4 provided in an embodiment of the present application. Figure 4 As shown, the electronic device 4 of this embodiment includes: a processor 401, a memory 402, and a computer program 403 stored in the memory 402 and executable on the processor 401. When the processor 401 executes the computer program 403, the steps in the above-mentioned method embodiments are implemented. Alternatively, when the processor 401 executes the computer program 403, the functions of the modules / units in the above-mentioned device embodiments are implemented.

[0173] The electronic device 4 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 4 may include, but is not limited to, a processor 401 and a memory 402. Those skilled in the art will appreciate that Figure 4 The electronic device 4 is merely an example and does not limit the electronic device 4 , and may include more or less components than those shown in the figure, or different components.

[0174] The processor 401 may be a central processing unit (CPU), or 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, etc.

[0175] The memory 402 may be an internal storage unit of the electronic device 4, for example, a hard disk or memory of the electronic device 4. The memory 402 may also be an external storage device of the electronic device 4, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. The memory 402 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 402 is used to store computer programs and other programs and data required by the electronic device.

[0176] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, 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 software functional units.

[0177] If the integrated module / 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 readable storage medium (e.g., a computer-readable storage medium). Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, which may be in source code form, object code form, executable file or some intermediate form. Computer-readable storage media may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0178] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A control method for a hybrid vehicle, characterized in that: include: In the case where there are other vehicles within a preset range of the target vehicle, determining a predicted collision time between the target vehicle and the other vehicles; When the collision prediction time is less than a first preset collision time and greater than a second preset collision time, determining a target operating mode of the target vehicle, and controlling the operating state of at least one component in a powertrain system of the target vehicle to be adjusted to a first target operating state under the target operating mode to reduce a total output power value of the powertrain system, wherein the target operating mode is a series mode or a pure electric mode; When the collision prediction time is not greater than the second preset collision time and greater than zero, based on the current working mode of the target vehicle, controlling the working state of at least one component in the powertrain system to be adjusted to a second target working state, so as to reduce the total output power value of the powertrain system; Among them, the total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

2. The method according to claim 1, characterized in that Determining a target operating mode of the target vehicle includes: When the current working mode of the target vehicle is the parallel mode, determining that the target working mode is the series mode, and controlling the clutch to be disconnected and converting the current working mode to the series mode; When the current working mode is the series mode, determining that the target working mode is the series mode, and controlling to maintain the series mode; When the current operating mode is the pure electric mode, the target operating mode is determined to be the pure electric mode, and the pure electric mode is controlled to be maintained.

3. The method according to claim 1, characterized in that The powertrain system includes an engine, a generator, a drive motor and a clutch; Controlling the operating state of at least one component in the powertrain system of the target vehicle to adjust to a first target operating state in the target operating mode includes: When the target working mode is the series mode, the current remaining power of the target vehicle and the power generation power of the powertrain system are obtained; if the current remaining power is lower than a preset remaining threshold value and the power generation power is greater than a preset power generation power, the power generation level of the generator is controlled to be reduced to a minimum power generation level, the torque of the engine is reduced to a preset torque, the speed of the generator is reduced to a preset speed, and the power of the drive motor is controlled to be reduced to a first preset low power; When the target operating mode is the pure electric mode, the power of the drive motor is controlled to be reduced to a first preset low power.

4. The method according to claim 1, characterized in that: The powertrain system includes an engine, a generator, a drive motor and a clutch; The controlling the operating mode of at least one component in the powertrain system to be adjusted to a second target operating state based on the current operating mode of the target vehicle includes: When the current working mode is the parallel mode, the clutch is disconnected, the engine is cut off from fuel and stopped, the drive motor is operated at a second preset low power, and the engine is prohibited from injecting fuel and igniting; When the current working mode is the series mode, the engine is controlled to cut off fuel supply and stop, the drive motor is operated at a second preset low power, and fuel injection and ignition of the engine are prohibited; When the operating mode of the target vehicle is the pure electric mode, the drive motor is controlled to operate at a second preset low power.

5. The method according to claim 1, characterized in that After the operating state of at least one component in the powertrain system of the target vehicle is controlled to be adjusted to the first target operating state in the target operating mode, the method further includes: When a collision state signal indicating that a collision has occurred is received from a controller area network CAN bus and the validity signal is valid, the operating states of the generator and the drive motor are controlled to be adjusted to the low-voltage standby state in the order of high-voltage standby, pressure relief, and low-voltage standby; When a collision state signal indicating that no collision has occurred currently is received and the validity signal is valid, determining a maintenance time of the collision state signal indicating that no collision has occurred currently, the maintenance time being a duration from the time when the first collision warning signal is received to the current moment, wherein the first collision warning signal is issued when it is detected that the collision prediction time is less than a first preset collision time; When the maintenance time is greater than a preset collision release time threshold or the collision prediction time is updated to be greater than or equal to the first preset collision time, the working state of each component in the powertrain system is restored to the working state before receiving the first collision warning signal, and when the target vehicle meets the conditions of the parallel mode, the clutch is controlled to engage, and the working mode of the target vehicle is controlled to switch to the parallel mode.

6. The method according to claim 1, characterized in that In the case where the collision prediction time is not greater than the second preset collision time and greater than zero, the method further includes: In the case of receiving a collision status signal sent by the CAN bus indicating that a collision has occurred, obtaining a collision time difference between the triggering of the second collision warning signal and the occurrence of the collision, and obtaining a relative speed, relative acceleration and relative distance between the target vehicle and the collided vehicle when the second collision warning signal is triggered, wherein the second collision warning signal is issued when it is detected that the collision prediction time is not greater than the second preset collision time; A correction coefficient of a second preset collision time is determined based on the collision time difference, the correction coefficient is associated with the relative speed, the relative acceleration and the relative distance, and the second preset collision time is updated based on the correction coefficient.

7. The method according to claim 6, characterized in that The step of determining a correction coefficient of a second preset collision time based on the collision time difference, and associating the correction coefficient with the relative speed, relative acceleration and relative distance comprises: Determine a predicted difference between a preset safety reaction time and the collision time difference, and determine a quotient of the predicted difference and the preset safety reaction time to obtain a correction coefficient corresponding to the current second preset collision time; The relative speed, relative acceleration and relative distance are respectively mapped to a target relative speed interval in a preset relative speed interval set, a target relative acceleration interval in a preset relative acceleration interval set and a target relative distance interval in a preset relative distance interval set; the preset relative speed interval set, the preset relative acceleration interval set and the preset relative distance interval set are respectively obtained by dividing the preset relative speed range, the preset relative acceleration range and the preset relative distance range according to the corresponding preset step lengths; The target relative speed interval, the target relative acceleration interval, the target relative distance interval and the correction coefficient are stored in association with each other.

8. The method according to claim 6, characterized in that The updating of the second preset collision time based on the correction coefficient includes: Determine at least two correction coefficients corresponding to the relative speed, relative acceleration and relative distance; The product of the average value of the at least two correction coefficients and the preset safety reaction time is determined as the correction time, and the sum of the current second preset collision time and the correction time is determined as the updated second preset collision time.

9. A control device for a hybrid vehicle, characterized in that: include: A prediction module, configured to determine a predicted collision time between the target vehicle and other vehicles when there are other vehicles within a preset range of the target vehicle; a first processing module, configured to determine a target operating mode of the target vehicle when the collision prediction time is less than a first preset collision time and greater than a second preset collision time, and to control the operating state of at least one component in the powertrain system of the target vehicle to be adjusted to a first target operating state under the target operating mode to reduce a total output power value of the powertrain system, wherein the target operating mode is a series mode or a pure electric mode; A second processing module is configured to control the working state of at least one component in the powertrain system to be adjusted to a second target working state based on the current working mode of the target vehicle, so as to reduce the total output power value of the powertrain system, when the collision prediction time is not greater than the second preset collision time and greater than zero; Among them, the total output power reduction value corresponding to the second target working state is greater than the total output power reduction value corresponding to the first target working state.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method according to any one of claims 1 to 8 when executing the computer program.

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