Range extender control method and device, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicle control, and provides a range extender control method and device, electronic equipment and a storage medium. The method responds to a slipping signal triggered by a vehicle, and the remaining electric quantity of a power battery of the vehicle is determined; obtaining the power demand of the vehicle, and determining the target electric quantity of the power battery according to the power demand; when the residual electric quantity is higher than the target electric quantity, operation of the range extender in the vehicle is restrained, when the vehicle slips, the residual electric quantity of power can be determined, when the residual electric quantity is higher than the target electric quantity, operation of the range extender is restrained, and therefore the vehicle using safety of a user is improved while the power requirement of the vehicle is met; the problems that after the vehicle slips, the vehicle collides, so that a high-speed rotating piece in the range extender is on fire due to friction or hurts people, and the vehicle using safety of a user is affected are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a range extender control method, device, electronic device and storage medium. Background Art

[0002] With the booming development of extended-range vehicles, the safety issues related to range extenders are becoming more and more serious. When the vehicle slips and sways, the range extender on the vehicle is likely to cause a safety accident, affecting the safety of the user. Summary of the invention

[0003] In view of this, the embodiments of the present application provide a range extender control method, device, electronic device and storage medium to solve the problem in the prior art that when the vehicle slips, the range extender is prone to cause safety accidents, affecting the user's vehicle safety.

[0004] According to a first aspect of an embodiment of the present application, a method for controlling a range extender is provided, the method comprising: determining a remaining power of a power battery of the vehicle in response to a slip signal triggered by the vehicle; obtaining a power demand of the vehicle, and determining a target power of the power battery according to the power demand, the target power being the power required to meet the power demand; and inhibiting operation of a range extender in the vehicle when the remaining power is higher than the target power.

[0005] According to a second aspect of an embodiment of the present application, a range extender control device is provided, the device comprising: a power module, configured to determine the remaining power of a power battery of the vehicle in response to a slip signal triggered by the vehicle; a power module, configured to obtain the power demand of the vehicle and determine a target power of the power battery according to the power demand, the target power being the power required to meet the power demand; and a control module, configured to inhibit the operation of the range extender in the vehicle when the remaining power is higher than the target power.

[0006] 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.

[0007] 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.

[0008] Compared with the prior art, the embodiments of the present application have the following beneficial effects: the method in the embodiments of the present application determines the remaining power of the vehicle's power battery in response to a slip signal triggered by the vehicle; obtains the vehicle's power demand, and determines the target power of the power battery according to the power demand; and inhibits the operation of the range extender in the vehicle when the remaining power is higher than the target power. In the present application, when the vehicle slips, the remaining power will be determined, and when the remaining power is higher than the target power, the operation of the range extender will be inhibited, thereby improving the user's vehicle safety while meeting the vehicle's power demand, and avoiding safety accidents such as friction and fire of high-speed rotating parts in the range extender or injury to people caused by vehicle collision after the vehicle slips, affecting the user's vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] 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.

[0010] Figure 1 It is a flow chart of a range extender control method provided in an embodiment of the present application;

[0011] Figure 2 is a flow chart of another range extender control method provided in an embodiment of the present application;

[0012] Figure 3 is a flow chart of another range extender control method provided in an embodiment of the present application;

[0013] Figure 4 It is a flow chart of another range extender control method provided in an embodiment of the present application;

[0014] Figure 5 is a flow chart of another optional range extender control method provided in an embodiment of the present application;

[0015] Figure 6 is a flow chart of another optional range extender control method provided in an embodiment of the present application;

[0016] Figure 7 It is a flowchart of another optional range extender control method provided in an embodiment of the present application;

[0017] Figure 8 is a flow chart of another optional range extender control method provided in an embodiment of the present application;

[0018] Fig. 9It is a structural schematic diagram of a range extender control device provided in an embodiment of the present application;

[0019] Fig.10 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] 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.

[0021] A range extender control method and device according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0022] When the remaining power of the power battery is insufficient during driving, the range extender will automatically start, and its internal engine will burn fuel to generate power, driving the generator to charge the power battery. However, when the vehicle slips or collides, the high-speed rotating parts in the range extender may generate friction and cause sparks, which in turn ignite the fuel and create a fire risk. In addition, damage to the outer shell caused by a collision may expose the high-speed rotating parts of the range extender. These exposed parts may damage other items or injure people, posing a greater safety hazard.

[0023] In order to solve the potential safety hazards caused by the range extender, the present application provides a range extender control method. Figure 1 A range extender control method provided in an embodiment of the present application is as follows: Figure 1 As shown, the method includes:

[0024] S101, in response to a skidding signal triggered by the vehicle, determining a remaining power of a power battery of the vehicle;

[0025] S102, obtaining a power demand of the vehicle, and determining a target power of the power battery according to the power demand, where the target power is the power required to meet the power demand;

[0026] S103: When the remaining power is higher than the target power, suppressing the operation of the range extender in the vehicle.

[0027] It can be understood that the range extender control method provided in this example is applied to vehicles equipped with range extenders, including vehicles with automatic driving or intelligent driving (including vehicles with passenger functions (such as cars, buses, large buses, minibuses, etc.), vehicles with cargo functions (such as ordinary trucks, vans, trailers, closed trucks, tank trucks, flatbed trucks, container trucks, dump trucks, trucks with special structures), special vehicles (such as logistics distribution vehicles, automatic guided transport vehicles AGV, patrol cars, cranes, cranes, excavators, bulldozers, forklifts, rollers, loaders, off-road engineering vehicles, armored engineering vehicles, sewage treatment vehicles, sanitation vehicles, vacuum trucks, floor washing vehicles, sprinkler trucks, sweeping robots, food delivery robots, shopping guide robots, lawn mowers, golf carts, etc.), vehicles with entertainment functions (such as entertainment vehicles, amusement park automatic driving devices, balance cars, etc.), rescue vehicles (such as fire trucks, ambulances, power repair vehicles, engineering rescue vehicles, etc.)), etc.

[0028] It can be understood that if the vehicle slips during driving, the vehicle has a higher risk of collision. In order to avoid collisions caused by vehicle slippage, and then cause safety hazards caused by the range extender, the present application will monitor the vehicle. If the vehicle slips, the present application responds to the slip signal triggered by the vehicle and determines the remaining power of the vehicle's power battery; illustratively, the remaining power is in the form of a percentage.

[0029] It can be understood that the purpose of obtaining the remaining power of the vehicle's power battery in this application is to determine whether the remaining power of the power battery can meet the vehicle's power demand. If the remaining power of the current vehicle cannot meet the vehicle's power demand, suppressing the operation of the range extender may cause the vehicle to stall or other abnormalities, resulting in an increased risk of traffic accidents. Therefore, this application will only suppress the operation of the range extender in the vehicle when the remaining power of the power battery can meet the vehicle's power demand; if the remaining power of the power battery cannot meet the vehicle's power demand, the operation of the range extender in the vehicle will not be suppressed.

[0030] It can be understood that, taking the method provided in the present application as being executed by a vehicle controller on a vehicle as an example, the vehicle controller can obtain the remaining power of the power battery through the battery management system on the vehicle.

[0031] Among them, in order to confirm whether the remaining power of the power battery can meet the power demand of the vehicle, the present application will obtain the power demand of the vehicle and determine the target power of the power battery according to the power demand, and the target power is the power required to meet the power demand.

[0032] In some examples, the present application will compare the remaining power with the target power. If the remaining power is higher than the target power, it means that the remaining power can meet the current power demand of the vehicle. At this time, suppressing the operation of the range extender will not cause abnormalities such as stalling of the vehicle, and can avoid safety accidents such as friction and fire of high-speed rotating parts in the range extender or injury to people; if the remaining power is lower than or equal to the target power, it means that the remaining power cannot meet the current power demand of the vehicle, and the power of the whole vehicle is affected. If the operation of the range extender is suppressed at this time, it may cause abnormalities such as stalling of the vehicle.

[0033] According to the technical solution provided in the embodiment of the present application, in response to a skidding signal triggered by the vehicle, the remaining power of the vehicle's power battery is determined; the power demand of the vehicle is obtained, and the target power of the power battery is determined according to the power demand; when the remaining power is higher than the target power, the operation of the range extender in the vehicle is suppressed. In the present application, when the vehicle skids, the remaining power of the power is determined, and when the remaining power is higher than the target power, the operation of the range extender is suppressed, thereby improving the user's vehicle safety and avoiding safety accidents such as friction fire or injury caused by vehicle collision after the vehicle skids, which affects the user's vehicle safety.

[0034] In some embodiments, Figure 2 As shown, the power demand of the vehicle is obtained, including:

[0035] S201, obtaining a driving mode, a driving speed, and a load of the vehicle, and determining an initial power requirement of the vehicle according to the driving mode, the driving speed, and the load;

[0036] S202, obtaining the road condition of the current road on which the vehicle is traveling, and determining a power demand weighting coefficient according to the road condition;

[0037] S203 . Perform weighted processing on the initial power demand based on the power demand weighted coefficient to obtain the power demand.

[0038] It can be understood that the power demand of a vehicle is related to the vehicle's driving mode, driving speed, and load. For example, the faster the vehicle's driving speed, the higher the power demand of the vehicle, and the slower the vehicle's driving speed, the lower the power demand of the vehicle. For another example, the higher the vehicle's load, the higher the power demand of the vehicle, and the lower the vehicle's load, the lower the power demand of the vehicle. For another example, the power demand corresponding to a vehicle's driving mode of sports mode is higher than the power demand corresponding to a vehicle's driving mode of energy-saving mode.

[0039] Specifically, the present application inputs the driving mode, driving speed, and load into a pre-set power demand acquisition formula to obtain the initial power demand of the vehicle. The power demand acquisition formula is as follows:

[0040] Pinit=M×(kv·V+kl·V);

[0041] Among them, Pinit is the initial power demand, M is the mode coefficient corresponding to the driving mode of the vehicle (different driving modes correspond to different mode coefficients, and the mode coefficient corresponding to each driving mode is flexibly set by relevant personnel according to actual needs), V is the driving speed of the vehicle, kv is the weighting coefficient corresponding to the driving speed (the weighting coefficient corresponding to the driving speed is flexibly set by relevant personnel according to actual needs), L is the load of the vehicle, kl is the weighting coefficient corresponding to the load (the weighting coefficient corresponding to the load is flexibly set by relevant personnel according to actual needs).

[0042] After obtaining the initial power demand, the present application will further determine the road conditions of the vehicle's current road, and determine the power demand weighting coefficient based on the road conditions; illustratively, the power demand weighting coefficient corresponding to the vehicle traveling on an uphill section is higher than that of the vehicle traveling on a flat road, and the power demand weighting coefficient corresponding to the vehicle traveling on a dirt road is higher than that of the vehicle traveling on an asphalt road; wherein, the correspondence between different types of driving roads and power demand weighting coefficients is flexibly set by relevant personnel according to actual needs.

[0043] After obtaining the power demand weighting coefficient and the initial power demand, the present application will perform weighted processing on the initial power demand based on the power demand weighting coefficient to obtain the power demand.

[0044] In some examples, the initial power demand may be directly used as the power demand without obtaining a power demand weighting coefficient for weighting processing.

[0045] According to the technical solution provided in the embodiment of the present application, the driving mode, driving speed, and load of the vehicle are obtained, and the initial power demand of the vehicle is determined based on the driving mode, driving speed, and load; the road condition of the road on which the vehicle is currently traveling is obtained, and a power demand weighting coefficient is determined based on the road condition; the initial power demand is weighted based on the power demand weighting coefficient to obtain the power demand. This method jointly determines the power demand of the vehicle through the vehicle's posture mode, driving speed, load, and road condition, thereby achieving accurate determination of the vehicle's power demand.

[0046] In some embodiments, Figure 3 As shown, the target power of the power battery is determined according to the power demand, including:

[0047] S301, obtaining the energy transfer efficiency of the vehicle, and determining the predicted output current of the power battery according to the energy transfer efficiency and the power demand;

[0048] S302: predict the output duration of the power battery, and determine the target power based on the output duration and the predicted output current.

[0049] Among them, the present application will determine the energy transfer efficiency of the vehicle, which is used to characterize the energy transfer efficiency between the motor and the drive system, that is, the energy transfer efficiency can reflect the energy transfer efficiency between the battery and the drive wheel, and then determine the predicted output current of the power battery according to the energy transfer efficiency and the power demand. Specifically, by obtaining the current battery voltage of the power battery, then multiplying the battery voltage and the energy transfer efficiency, and finally taking the ratio of the power demand to the product of the battery voltage and the energy transfer efficiency as the predicted output current, as follows:

[0050]

[0051] Among them, I is the predicted output current, P is the power demand, U is the battery voltage, and η is the energy transfer efficiency.

[0052] It can be understood that the above I is the predicted current that the power battery needs to provide to meet the vehicle's power demand. After obtaining the above predicted output current, in order to ensure the smooth operation of the vehicle, this example will pre-set the output time of the power battery. The output time is the time the power battery needs to continuously meet the power demand, and then multiply the output time by the predicted output current to get the target power.

[0053] In some examples, a target power level may be directly pre-set, and the target power level may range from 5% to 20%; illustratively, the target power level may be directly set to one of 5%, 6%, 7%, 8%, 9%, 10%, and 15%.

[0054] According to the technical solution provided in the embodiments of the present application, the energy transfer efficiency of the vehicle is obtained, and the predicted output current of the power battery is determined according to the energy transfer efficiency and power demand. The energy transfer efficiency is used to characterize the energy transfer efficiency between the motor and the drive system. The output duration of the vehicle is predicted, and the target power is determined based on the output duration and the predicted output current. This achieves comprehensive consideration of parameters such as the predicted output current, energy transfer efficiency, and output duration, and further accurately determines the target power.

[0055] In some embodiments, Figure 4 As shown, when the remaining power is higher than the target power, the operation of the range extender in the vehicle is inhibited, including:

[0056] S401, when the current state of the range extender is the running state, sending a range extender shutdown instruction to the range extender;

[0057] S402: Send a range extender inhibition instruction to the engine controller, where the range extender inhibition instruction is used to instruct the engine controller to stop supplying fuel to the range extender.

[0058] It can be understood that in this application, when the current state of the range extender is the running state, the vehicle controller will send a range extender shutdown command to the range extender, so that the high-speed rotating parts in the range extender stop rotating. On this basis, in order to further avoid safety accidents such as friction and fire of high-speed rotating parts that ignite fuel or rotation and injure people, the vehicle controller in this application will also send a range extender inhibition command to the engine controller. The range extender inhibition command is used to instruct the engine controller to stop supplying oil to the range extender, and after the engine controller receives the range extender inhibition command, it will not send a start command to the range extender, so as to avoid safety accidents caused by accidentally starting the range extender.

[0059] In some examples, when the current state of the range extender is cranking or stopping, the vehicle controller will also send a range extender shutdown command to the range extender; and send a range extender inhibition command to the engine controller, which will not be repeated here.

[0060] In some examples, when the current state of the range extender is the stop state (stop), the present application will send a range extender inhibition instruction to the engine controller so that the engine controller will not send a start instruction and / or a stop instruction to the range extender, thereby avoiding safety hazards caused by the engine controller erroneously waking up the range extender.

[0061] According to the technical solution provided in the embodiment of the present application, when the current state of the range extender is the running state, a range extender shutdown command is sent to the range extender; a range extender inhibition command is sent to the engine controller, thereby realizing the fuel cut-off and shutdown of the range extender, and avoiding the accidental awakening of the range extender, so that the range extender will not ignite the fuel or injure people due to the rotational friction of the high-speed rotator.

[0062] In some embodiments, Figure 5 As shown, after inhibiting the operation of the range extender in the vehicle, the method further includes:

[0063] S501, timing is performed when the slip signal terminates to obtain the timing duration;

[0064] S502: If the timing duration reaches a preset duration threshold, the operation of the range extender is stopped.

[0065] It can be understood that when the vehicle controller determines that the vehicle slipping has ended, it will continue to count the time to obtain the timing duration. If the timing duration reaches a preset time threshold (such as 5 seconds), it is determined that the vehicle slipping has ended. At this time, the vehicle will stop suppressing the operation of the range extender, so that the range extender can charge the power battery in response to the vehicle's overall needs.

[0066] In some examples, when the timing reaches a preset time threshold, the present application will further determine whether the vehicle has collided. If the vehicle has collided, the range extender may be damaged due to the collision. At this time, stopping the range extender will also cause the rotational friction of the high-speed rotator to ignite the fuel or injure people. Based on the above reasons, if the timing reaches the preset time threshold and it is confirmed that the vehicle has not collided, the present application will stop suppressing the operation of the range extender. If the timing reaches the preset time threshold and it is confirmed that the vehicle has collided, the present application will wait for further instructions from the user. When the user instructs to stop suppressing the operation of the range extender, the present application will stop suppressing the operation of the range extender.

[0067] According to the technical solution provided in the embodiment of the present application, timing is performed when the slip signal terminates to obtain the timing duration; if the timing duration reaches a preset duration threshold, the operation of the range extender is stopped from being suppressed. After determining that the vehicle slip has ended, the present application stops suppressing the operation of the range extender, so that the range extender can charge the power battery in response to the vehicle's overall vehicle needs, thereby avoiding the problem of the range extender being unable to work normally due to the range extender being suppressed all the time.

[0068] In some embodiments, Figure 6 As shown, the method also includes:

[0069] S601, obtaining an expected driving direction and an actual driving direction of the vehicle, and comparing the expected driving direction with the actual driving direction to obtain a direction difference;

[0070] S602: If the direction difference is greater than a preset direction threshold, and it is determined that the wheel speed information of the vehicle is abnormal, it is determined that the vehicle triggers a slip signal.

[0071] It can be understood that the present application obtains the desired driving direction of the vehicle through a steering wheel angle sensor. Specifically, the steering wheel angle sensor converts the steering wheel angle into a signal that can represent the driver's desired driving direction and sends it to the electronic stability control system, where the steering wheel angle is generally determined based on photoelectric coding, and the encoder disk installed on the steering column contains encoded information such as the direction of rotation and angle.

[0072] In some examples, the present application detects the angular velocity of the vehicle around its vertical axis through a yaw rate sensor, and the electronic control unit determines the actual driving direction of the vehicle based on signals such as the yaw angular velocity signal and the lateral acceleration, and the yaw rate sensor sends the yaw rate information (actual driving direction) to the electronic stability control system.

[0073] In some examples, after obtaining the actual driving direction and the expected driving direction of the vehicle, the present application compares the actual driving direction and the expected driving direction to obtain a direction difference.

[0074] In some examples, the present application will also obtain the wheel speed information of the vehicle. Specifically, the present application collects the wheel speed information through the wheel speed sensor, wherein the wheel speed sensor detects the actual wheel speed of each wheel in order to monitor the speed of each wheel rotation and determine the movement state of the wheel. The wheel speed sensor cooperates with the ring gear to collect the rotation speed of the wheel and converts it into an electrical signal, which is input into the electronic stability control system for processing.

[0075] It can be understood that after receiving the desired driving direction and the actual driving direction, the electronic stability control system will compare the desired driving direction with the actual driving direction to obtain a direction difference. If the direction difference is greater than a preset direction threshold and it is determined that there is an abnormality in the vehicle's wheel speed information, it is determined that the vehicle has triggered a slip signal. Specifically, the electronic stability control system receives the desired driving direction sent by the steering wheel angle sensor, receives the wheel speed information corresponding to each wheel transmitted by the wheel speed sensor, and receives the actual driving direction sent by the yaw rate sensor. When the electronic stability control system detects that any wheel speed information is abnormal and the direction difference between the vehicle's actual driving direction and the desired driving direction is greater than the direction threshold, the electronic stability control system determines that the vehicle is slipping, and the electronic stability control system sends a slip signal to the vehicle controller.

[0076] It is understandable that when the vehicle skids, the lateral acceleration of the vehicle will be abnormal. In order to further improve the accuracy of determining skidding, the present application will also determine whether there is an abnormality in the lateral acceleration of each wheel; specifically, the present application obtains the lateral acceleration of the wheel through a lateral acceleration sensor, wherein, taking a micromechanical lateral acceleration sensor as an example, the micromechanical lateral acceleration sensor senses the voltage value of the tire when it is in positive / negative acceleration, compares its static voltage value, and thus calculates the value of positive / negative acceleration, and the lateral acceleration sensor sends the lateral acceleration information to the electronic stability control system. The electronic stability control system detects that the wheel speed information of any wheel is abnormal, the direction difference between the actual driving direction of the vehicle and the expected driving direction is greater than the direction threshold, and there is an abnormality in the lateral acceleration of the wheel, then the electronic stability control system determines that the vehicle is skidding, and the electronic stability control system sends a skidding signal to the vehicle controller.

[0077] In order to better understand the present method, the present application provides a more specific example for illustration, such as Figure 7As shown, the present application obtains the desired driving direction through a steering wheel angle sensor, obtains lateral acceleration information through a lateral acceleration sensor, obtains wheel speed information through a wheel speed sensor, and obtains vehicle yaw rate information (actual driving direction) through a yaw rate sensor. If the electronic stability control system detects that the wheel speed information of any wheel is abnormal, the direction difference between the actual driving direction of the vehicle and the desired driving direction is greater than the direction threshold, and there is an abnormality in the lateral acceleration of the wheel, the electronic stability control system determines that the vehicle is skidding. At this time, the electronic stability control system sends a skidding signal to the vehicle controller. The vehicle controller obtains the remaining power of the vehicle's power battery through the vehicle's battery management system, and determines the vehicle's status through the body controller. When the vehicle's status is Present ON and the vehicle's remaining power is higher than the target power, a range extender fuel cut-off command and a range extender startup inhibition command are issued to the engine controller. The vehicle controller will also receive the collision signal transmitted by the airbag sensor (the collision signal transmitted by the airbag sensor is the collision signal transmitted by the collision sensor to the airbag sensor), and the vehicle sensor will also start timing when the slip signal terminates to obtain the timing duration; if the timing duration reaches the preset duration threshold and the collision signal indicates that the vehicle has not collided, the operation of the range extender will be stopped.

[0078] According to the technical solution provided in the embodiment of the present application, the expected driving direction and the actual driving direction of the vehicle are obtained, and the expected driving direction is compared with the actual driving direction to obtain a direction difference; if the direction difference is greater than a preset direction threshold, and it is determined that there is an abnormality in the wheel speed information of the vehicle, then it is determined that the vehicle triggers a slip signal, wherein the present application comprehensively determines whether the vehicle is slipping based on the expected driving direction, the actual driving direction, and the wheel speed information, thereby improving the accuracy of the slip signal.

[0079] In some embodiments, Figure 8 As shown, after inhibiting the operation of the range extender in the vehicle, the method further includes:

[0080] S801, determining whether a vehicle collision occurs, and obtaining a physiological state of a driver and passenger in the vehicle in the event of a vehicle collision;

[0081] S802: When the physiological state of the driver or passenger is abnormal, a rescue reminder is issued.

[0082] Specifically, if a vehicle collides while skidding, it usually results in a major collision accident, which can easily cause the driver and passengers to become unconscious, injured, or other abnormal conditions. In the above abnormal conditions, it is often difficult for the driver and passengers to call for help on their own, resulting in delayed rescue time.

[0083] Based on the above reasons, after suppressing the operation of the range extender in the vehicle, the present application will further determine whether the vehicle has collided, and in the event of a collision, obtain the physiological state of the driver and passengers in the vehicle; when the physiological state of the driver and passengers is abnormal, a rescue reminder is issued, and the rescue reminder includes an online rescue reminder and an offline rescue reminder. The online rescue reminder is to send a message requiring rescue to a pre-set contact (such as first aid personnel, emergency contact personnel), and the offline reminder is to send a message requiring rescue through the vehicle's own audio.

[0084] It is understandable that a rescue reminder is issued when the vehicle has not collided or the physiological state of the driver and passengers is not abnormal.

[0085] According to the technical solution provided in the embodiment of the present application, it is determined whether a vehicle collision occurs. In the event of a vehicle collision, the physiological state of the driver and passengers in the vehicle is obtained; when the physiological state of the driver and passengers is abnormal, a rescue reminder is issued so that rescue personnel can promptly learn of the abnormal state of the driver and passengers, and then rescue the driver and passengers in time.

[0086] 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.

[0087] 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.

[0088] This embodiment also provides a range extender control device, such as Fig. 9 As shown, the device comprises:

[0089] The power module 901 is configured to determine the remaining power of the power battery of the vehicle in response to a slip signal triggered by the vehicle;

[0090] The power module 902 is configured to obtain the power demand of the vehicle and determine the target power of the power battery according to the power demand, where the target power is the power required to meet the power demand;

[0091] The control module 903 is configured to inhibit the operation of the range extender in the vehicle when the remaining power is higher than the target power.

[0092] In some examples, the power module 902 is also configured to obtain the vehicle's driving mode, driving speed, and load, and determine the vehicle's initial power demand based on the driving mode, driving speed, and load; obtain the road condition of the vehicle's current road, and determine a power demand weighting coefficient based on the road condition; and weight the initial power demand based on the power demand weighting coefficient to obtain the power demand.

[0093] In some examples, the power module 902 is also configured to obtain the energy transfer efficiency of the vehicle, determine the predicted output current of the power battery based on the energy transfer efficiency and power demand, the energy transfer efficiency is used to characterize the energy transfer efficiency between the motor and the drive system; predict the output duration of the vehicle, and determine the target power based on the output duration and the predicted output current.

[0094] In some examples, the control module 903 is also configured to send a range extender shutdown command to the range extender when the current state of the range extender is the running state; send a range extender inhibition command to the engine controller, and the range extender inhibition command is used to instruct the engine controller to stop supplying fuel to the range extender.

[0095] In some examples, the control module 903 is further configured to start timing when the slip signal terminates to obtain a timing duration; if the timing duration reaches a preset duration threshold, the operation of the range extender is stopped from being inhibited.

[0096] In some examples, the control module 903 is also configured to obtain the desired driving direction and actual driving direction of the vehicle, and compare the desired driving direction with the actual driving direction to obtain a direction difference; if the direction difference is greater than a preset direction threshold, and it is determined that there is an abnormality in the wheel speed information of the vehicle, it is determined that the vehicle triggers a slip signal.

[0097] In some examples, the control module 903 is also configured to determine whether the vehicle has collided, and in the event of a collision, obtain the physiological state of the driver and passengers in the vehicle; if the physiological state of the driver and passengers is abnormal, issue a rescue reminder.

[0098] According to the technical solution provided in the embodiment of the present application, the range extender control device provided in the present embodiment determines the remaining power of the vehicle's power battery in response to a slip signal triggered by the vehicle; obtains the vehicle's power demand, and determines the target power of the power battery according to the power demand; when the remaining power is higher than the target power, the operation of the range extender in the vehicle is inhibited. In the case of vehicle slippage, the present application determines the remaining power of the power and compares the remaining power with the target power that can characterize the vehicle's current power demand. When the remaining power is higher than the target power, the operation of the range extender is inhibited, thereby improving the user's vehicle safety and avoiding safety accidents such as friction and fire of high-speed rotating parts in the range extender or injury to people caused by vehicle collision after the vehicle slips, thereby affecting the user's vehicle safety.

[0099] Fig.10 Schematic diagram of an electronic device 10 provided in an embodiment of the present application. Fig.10As shown, the electronic device 10 of this embodiment includes: a processor 1001, a memory 1002, and a computer program 1003 stored in the memory 1002 and executable on the processor 1001. When the processor 1001 executes the computer program 1003, the steps in each of the above-mentioned method embodiments are implemented. Alternatively, when the processor 1001 executes the computer program 1003, the functions of each module / unit in each of the above-mentioned device embodiments are implemented.

[0100] The electronic device 10 may be a desktop computer, a notebook, a PDA, a cloud server, or other electronic device. The electronic device 10 may include, but is not limited to, a processor 1001 and a memory 1002. Those skilled in the art will appreciate that Fig.10 The electronic device 10 is merely an example and does not limit the electronic device 10 . The electronic device 10 may include more or fewer components than shown in the figure, or different components.

[0101] The processor 1001 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.

[0102] The memory 1002 may be an internal storage unit of the electronic device 10, for example, a hard disk or memory of the electronic device 10. The memory 1002 may also be an external storage device of the electronic device 10, for example, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card (FlashCard), etc. equipped on the electronic device 10. The memory 1002 may also include both an internal storage unit of the electronic device 10 and an external storage device. The memory 1002 is used to store computer programs and other programs and data required by the electronic device.

[0103] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of each functional unit and module is used as an example. In actual application, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit, and the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0104] 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 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 each of the above-mentioned method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer-readable medium 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 distance, telecommunication distance and software distribution medium, etc. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of regional requirements and patent practice. For example, in some areas, according to regional requirements and patent practice, the computer-readable medium does not include electric carrier distance and telecommunication distance.

[0105] 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, a person skilled in the art should understand that the technical solutions described in each of the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of each embodiment of the present application, and should all be included in the protection scope of the present application.

Claims

1. A range extender control method, characterized in that: The method comprises: In response to a slip signal triggered by the vehicle, determining a remaining power of a power battery of the vehicle; Acquiring a power demand of the vehicle, and determining a target power level of the power battery according to the power demand, wherein the target power level is the power level required to meet the power demand; When the remaining power is higher than the target power, operation of a range extender in the vehicle is suppressed.

2. The method according to claim 1, characterized in that Obtaining the power requirement of the vehicle, including: Acquiring a driving mode, a driving speed, and a load of the vehicle, and determining an initial power requirement of the vehicle according to the driving mode, the driving speed, and the load; Acquiring the road condition of the current road on which the vehicle is traveling, and determining a power demand weighting coefficient according to the road condition; The initial power demand is weighted based on the power demand weighting coefficient to obtain the power demand.

3. The method according to claim 1, characterized in that Determining a target power of the power battery according to the power demand includes: Acquiring an energy transfer efficiency of the vehicle, and determining a predicted output current of the power battery according to the energy transfer efficiency and the power demand, wherein the energy transfer efficiency is used to characterize the energy transfer efficiency between the motor and the drive system; The output duration of the vehicle is predicted, and the target power is determined based on the output duration and the predicted output current.

4. The method according to claim 1, characterized in that: When the remaining power is higher than the target power, inhibiting the operation of the range extender in the vehicle includes: When the current state of the range extender is the running state, sending a range extender shutdown instruction to the range extender; A range extender inhibition instruction is sent to an engine controller, wherein the range extender inhibition instruction is used to instruct the engine controller to stop supplying fuel to the range extender.

5. The method according to claim 1, characterized in that After inhibiting operation of the range extender in the vehicle, the method further includes: When the slip signal is terminated, timing is performed to obtain a timing duration; If the timing duration reaches a preset duration threshold, the operation of the range extender is stopped and suppressed.

6. The method according to claim 1, characterized in that The method further comprises: Acquiring an expected driving direction and an actual driving direction of the vehicle, and comparing the expected driving direction with the actual driving direction to obtain a direction difference; If the direction difference is greater than a preset direction threshold and it is determined that the wheel speed information of the vehicle is abnormal, it is determined that the vehicle triggers the slip signal.

7. The method according to claim 1, characterized in that After inhibiting operation of the range extender in the vehicle, the method further includes: Determining whether the vehicle has collided, and obtaining the physiological state of the driver and passengers in the vehicle if the vehicle has collided; When the physiological state of the driver and passenger is abnormal, a rescue reminder is issued.

8. A range extender control device, characterized in that: The device comprises: a power module, configured to determine the remaining power of a power battery of the vehicle in response to a slip signal triggered by the vehicle; A power module is configured to obtain a power demand of the vehicle and determine a target power of the power battery according to the power demand, wherein the target power is a power required to meet the power demand; The control module is configured to inhibit the operation of the range extender in the vehicle when the remaining power is higher than the target power.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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