CN116811901A

CN116811901A - Emergency starting control method and device, electronic equipment and vehicle

Info

Publication number: CN116811901A
Application number: CN202311038912.3A
Authority: CN
Inventors: 关彦挺
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2023-09-29

Abstract

The application provides a control method and device for emergency starting, electronic equipment and a vehicle, which can carry out self-checking on a motor controller after entering an emergency starting mode, and ensure that the motor controller can smoothly execute emergency starting; after the self-test passes, ensuring sufficient power supply by prohibiting the engine from stopping; when the starting rotation speed reaches a rotation speed threshold value, controlling the voltage output of the motor controller, and ensuring that the motor controller can output stable high voltage to supply power to the high-voltage accessory; when the voltage of the direct current side is larger than or equal to a preset voltage threshold value, converting high voltage into low voltage through a direct current converter, and supplying power to the low-voltage accessory to finish the power-on of the whole vehicle; and after the low-voltage accessory is powered on, starting the vehicle speed limit until the exit condition is met, exiting the emergency starting mode, and performing the vehicle speed limit can ensure that enough power can be used for maintaining the operation of the high-voltage accessory when the engine is independently driven.

Description

Emergency starting control method and device, electronic equipment and vehicle

Technical Field

The present application relates to the field of vehicle technologies, and in particular, to a control method and apparatus for emergency starting, an electronic device, and a vehicle.

Background

The hybrid vehicle has the dual properties of pure electric drive and engine drive, which can be used alone or in combination. Vehicles are often shut down for safety reasons when high voltage components, particularly power cells, fail to function properly due to temperature or other malfunctions.

Disclosure of Invention

In view of the above, the application aims to provide an emergency starting control method, an emergency starting control device, electronic equipment and a vehicle, which are used for ensuring that the vehicle can normally run when a power battery fails.

Based on the above object, a first aspect of the present application provides a control method for emergency starting, including:

in response to entering an emergency starting mode, controlling a motor controller to enter a standby mode, and performing self-checking on the motor controller;

starting an engine in response to the self-checking passing, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time;

responding to the engine rotating speed being larger than or equal to a preset rotating speed threshold value, controlling the motor controller to enter a voltage control mode, and detecting the direct-current side voltage of the motor controller in real time;

Responding to the voltage of the direct current side to be more than or equal to a preset voltage threshold value, and supplying power to the low-voltage accessory through a direct current converter;

and responding to the completion of the power-on of the low-voltage accessory, determining that the emergency starting is completed, starting the vehicle speed limit until the exit condition is met, and exiting the emergency starting mode.

A second aspect of the present application provides an emergency start control device, including:

a self-test module configured to: in response to entering an emergency starting mode, controlling a motor controller to enter a standby mode, and performing self-checking on the motor controller;

a startup module configured to: starting an engine in response to the self-checking passing, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time;

a voltage control module configured to: responding to the engine rotating speed being larger than or equal to a preset rotating speed threshold value, controlling the motor controller to enter a voltage control mode, and detecting the direct-current side voltage of the motor controller in real time;

a low voltage power supply module configured to: responding to the voltage of the direct current side to be more than or equal to a preset voltage threshold value, and supplying power to the low-voltage accessory through a direct current converter;

a vehicle speed limit module configured to: and in response to the low-voltage accessory power-on completion, determining that emergency starting is completed and starting a vehicle speed limit.

A third aspect of the application provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as provided in the first aspect of the application when executing the program.

A fourth aspect of the application provides a vehicle comprising the electronic device provided in the third aspect of the application for performing the method provided in the first aspect of the application.

From the above, the control method, the device, the electronic equipment and the vehicle for emergency starting provided by the application can control the motor controller to enter the standby mode after entering the emergency starting mode, and perform self-checking on the motor controller to ensure that the motor controller can smoothly execute emergency starting; after the self-check is passed, starting the engine, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time, wherein the stopping of the engine is forbidden at the moment to ensure that the vehicle cannot run due to lack of a power source and sufficient power supply is ensured; then, when the engine speed is greater than or equal to a preset speed threshold, controlling the motor controller to enter a voltage control mode, detecting the direct-current side voltage of the motor controller in real time, and when the engine speed reaches the speed threshold, controlling the voltage output of the motor controller, so as to ensure that the motor controller can output stable high voltage and supply power to the high-voltage accessories; when the voltage of the direct current side is larger than or equal to a preset voltage threshold, the direct current converter is used for supplying power to the low-voltage accessory, after the direct current converter is used for converting high voltage into low voltage, the low-voltage accessory is powered, the whole vehicle is powered up, the low-voltage accessory is powered up, emergency starting is determined to be completed, the vehicle speed limit is started, and the sufficient power for maintaining the operation of the high-voltage accessory and the low-voltage accessory when the engine is independently driven can be ensured by the vehicle speed limit.

Drawings

In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art.

FIG. 1a is a flow chart of a control method for emergency starting according to an embodiment of the present application;

FIG. 1b is a flow chart of a control method for emergency start when dual motor control is present in an embodiment of the present application;

FIG. 2 is a flow chart of an embodiment of the present application for determining whether to enter an emergency start mode;

FIG. 3 is a flow chart of controlling a motor controller to enter a standby mode according to an embodiment of the present application;

FIG. 4 is a flow chart of a self-test of a motor controller according to an embodiment of the present application;

FIG. 5 is a flow chart illustrating the opening of a vehicle speed limit in accordance with an embodiment of the present application;

FIG. 6 is a flowchart illustrating an embodiment of meeting an exit condition;

FIG. 7 is a flowchart illustrating another embodiment of meeting an exit condition;

FIG. 8 is a schematic structural diagram of an emergency start control device according to an embodiment of the present application;

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the application.

Detailed Description

The present application will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present application more apparent.

It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used in embodiments of the present application, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In this document, it should be understood that any number of elements in the drawings is for illustration and not limitation, and that any naming is used only for distinction and not for any limitation.

Based on the above description of the background art, there are also the following cases in the related art:

the hybrid power vehicle is driven by the whole vehicle by means of the two parts of the generator device and the battery device, the generator device and the battery device are connected in parallel, and the two circuits cannot be mutually influenced. However, under the condition of power battery failure, the vehicle operation is relatively laborious, the condition of lack of power can obviously appear, and the vehicle fuel consumption can also increase at this time, and directly utilize the engine to supply power, its output voltage produces certain fluctuation, and unstable output voltage can reduce the life of the high-low voltage annex of vehicle, and lacks the protection to the power battery that breaks down.

The emergency starting control method, the emergency starting control device, the electronic equipment and the vehicle provided by the embodiment of the application can acquire the vehicle state information in real time and determine whether to enter an emergency starting mode according to the vehicle state information; after entering the emergency starting mode, controlling the motor controller to enter a standby mode, and performing self-checking on the motor controller to ensure that the motor controller can smoothly execute emergency starting; after the self-check is passed, starting the engine, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time, wherein the stopping of the engine is forbidden at the moment to ensure that the vehicle cannot run due to lack of a power source and sufficient power supply is ensured; then, when the engine speed is greater than or equal to a preset speed threshold, controlling the motor controller to enter a voltage control mode, detecting the direct-current side voltage of the motor controller in real time, and when the engine speed reaches the speed threshold, controlling the voltage output of the motor controller, so as to ensure that the motor controller can output stable high voltage and supply power to the high-voltage accessories; when the voltage of the direct current side is larger than or equal to a preset voltage threshold, the direct current converter is used for supplying power to the low-voltage accessory, after the direct current converter is used for converting the high voltage into the low voltage, the low-voltage accessory is powered, the whole vehicle is powered up, after the low-voltage accessory is powered up, the emergency starting is determined to be completed, the vehicle speed limit is started until the exit condition is met, the emergency starting mode is exited, and the vehicle speed limit is performed, so that enough power can be ensured to maintain the operation of the high-voltage accessory and the low-voltage accessory when the engine is independently driven.

A control method of emergency start according to an exemplary embodiment of the present application will be described below with reference to the accompanying drawings.

In some embodiments, as shown in fig. 1a, a control method for emergency starting includes:

step 101: and in response to entering the emergency starting mode, controlling the motor controller to enter a standby mode, and performing self-checking on the motor controller.

In specific implementation, after entering an emergency starting mode, the motor controller is mainly used for powering up and starting the whole vehicle. The motor controller is provided with at least two pairs of high-voltage interfaces, wherein one pair is an input interface and is a high-voltage interface for connecting a power battery pack; the other pair is a high-voltage output interface which is connected with a motor and provides a control power supply. The low-voltage power supply is provided with at least one low-voltage interface, all low-voltage accessories such as communication, sensors, low-voltage power supplies and the like are led out through the low-voltage interface and connected to the whole vehicle controller and the power battery management system, and the conversion of high voltage and low voltage can be realized by a direct current converter. The components with strong electric connection relation with the motor controller are a motor and a power battery pack; the motor controller is connected to the CAN bus of the whole vehicle, CAN communicate with the whole vehicle controller, the digital instrument board and the power battery management system, exchange data and receive instructions.

After entering the emergency start mode, an initialization request needs to be sent to the all-vehicle high-voltage controller (high-voltage accessory). When all the high-voltage accessories except the power battery are initialized, the emergency starting process is started, and the air conditioner needs to be limited to be incapable of being used after entering the emergency starting mode, because the air conditioner system occupies a large amount of output power, when the engine is independently used for driving, the consumption of other functions on the output power needs to be reduced as much as possible in order to ensure sufficient power.

After entering the emergency starting mode, if all the high-voltage accessories pass the initialization request, the power battery fault is indicated that the high-voltage accessories are not damaged, and the power-on condition of re-electrifying is met. After the power-on condition is detected to be met, the relay of the power battery is not required to be closed, even if the power battery and the whole vehicle line are in an open circuit state, the power battery is prevented from discharging and simultaneously is prevented from being charged when restarting, and the power battery is damaged at the moment, so that the fault condition of the power battery is possibly further aggravated when the power battery is charged.

After the motor controller is controlled to enter the standby mode, the motor controller is required to be self-checked, whether the motor controller is damaged due to the damage of the power battery is determined, if the motor controller cannot enter the standby mode, the motor controller can be determined to have a fault and cannot be controlled to be started in an emergency mode, the self-check is determined to be failed, the emergency start is failed, and the emergency start mode is exited.

Step 102: and starting the engine in response to the self-checking, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time.

When the method is implemented, if the motor controller can smoothly enter the standby mode, the self-checking of the motor controller is determined to pass, and the emergency starting can be carried out continuously through the motor controller. After the self-checking is passed, the engine is started through the 12V storage battery, the rotating speed of the engine is gradually increased after the engine is started, the engine drives the generator to generate power at the moment, and the engine rotating speed of the engine needs to be detected in real time at the moment so as to determine whether the engine can generate enough voltage at the current rotating speed to realize the power-on of the high-voltage accessory.

The purpose of controlling the stopping of the engine is to avoid the sudden flameout of the vehicle, because the power battery breaks down and the power battery is already disconnected, the driving source of the whole vehicle is only the engine at the moment, if the engine stops, the whole vehicle can be flameout immediately, so when the user does not perform stopping operation, the engine is prohibited from stopping, various control instructions for automatically closing the engine can not be responded, the stopping of the engine can be controlled only when the user manually stops, and the stopping of the engine can be prohibited, so that the vehicle can not run due to the lack of the power source, and the sufficient power supply can be ensured.

Step 103: and responding to the engine rotating speed being greater than or equal to a preset rotating speed threshold value, controlling the motor controller to enter a voltage control mode, and detecting the direct-current side voltage of the motor controller in real time.

When the rotation speed of the engine is larger than or equal to a preset rotation speed threshold, the engine is determined to drive the generator to generate enough voltage to realize the power-on of the high-voltage accessory, and the motor controller is required to manage the voltage output by the generator at the moment, so that the motor controller is controlled to enter a voltage control mode to control the output of the generator, after the motor controller enters the voltage control mode, the motor controller is intelligently discharged and cannot control the generator to recover energy, and after the motor controller enters the voltage control mode, the motor controller can realize stable voltage output because the motor is used for driving the generator to output possibly has larger voltage fluctuation, particularly when the engine forwards and changes, the motor controller is used for controlling the output of the generator, and the voltage output by the motor controller can be ensured to be stable. Since the high-voltage accessory needs a higher voltage, the direct-current side voltage of the motor controller needs to be detected in real time at this time to determine whether the high-voltage accessory can be powered up.

Step 104: and responding to the voltage of the direct current side to be more than or equal to a preset voltage threshold value, and supplying power to the low-voltage accessory through the direct current converter.

In the implementation, when the voltage of the direct current side is larger than or equal to a preset voltage threshold (for example, 300V), the requirement on voltage when the high-voltage accessory is electrified is met, and after the high-voltage accessory is electrified, the low-voltage accessory is powered through the direct current converter, so that the electrification of the low-voltage accessory is completed.

Step 105: in response to the low voltage accessory powering up being completed, an opening vehicle speed limit is determined.

When the vehicle is powered on, the power on of the low-voltage accessory is determined to be finished, the whole vehicle can be considered to be powered on, emergency starting is finished, the vehicle is in an idle mode before a user requests to run, and normal running of the vehicle is achieved when the user controls the vehicle to run, however, the total power provided by the engine is limited because the engine is independently driven at the moment, and the power available for driving the vehicle to run is limited after the power requirement of the whole vehicle high-low voltage accessory is met, so that the vehicle speed is required to be limited at the moment, the user is forbidden to increase the vehicle speed to be above a preset vehicle speed threshold value, the engine is ensured not to be overloaded, and the vehicle can run at the vehicle speed threshold value only when the vehicle is fastest at the moment. And (3) until the fault of the power battery is eliminated, determining that the exiting condition is met, exiting the emergency starting mode, and performing the conventional starting mode.

In some embodiments, the vehicle further comprises a rear motor controller; then after said supplying of the low voltage accessory via the dc converter, the control method for emergency starting further comprises, as shown in fig. 1 b:

step 105': and controlling the rear motor controller to enter a standby mode.

It should be noted that the method shown in fig. 1a is mainly applicable to a vehicle having only one motor controller, and when there are two motor controllers of the front motor controller and the rear motor controller, the front motor controller corresponds to the motor controller in the above embodiment, and performs new control on the rear motor controller. For a vehicle with a front motor controller and a rear motor controller, the driving source can be controlled to supply power to the front motor through the front motor controller, so that the front motor drives the front wheels to drive the vehicle; the driving source can be controlled to supply power to the rear motor through the rear motor controller, so that the front and rear machines drive the rear wheels of the vehicle to drive the vehicle; the four-wheel drive can also supply power to the front motor and the rear motor at the same time for four-wheel drive.

In the specific implementation, the rear motor controller is controlled to enter a standby mode after the low-voltage accessory is powered, so that the rear motor controller can be forbidden to recover power, and the power battery can not be charged, so that the safety of the power battery is ensured; the power compensation device can also control the rear motor controller to output and compensate power, so that the total power output is improved while the power battery is not charged.

Step 106': and in response to the low-voltage accessory being powered up and the rear motor controller being in a standby mode, determining that emergency starting is completed and starting a vehicle speed limit.

In specific implementation, after the low-voltage accessory is powered on, and the rear motor controller is in a standby mode, the whole vehicle can be considered to be powered on, emergency starting is completed, before a user requests to run, the vehicle is in an idle mode, and normal running of the vehicle is realized when the user controls the vehicle to run, but because the engine is independently driven at this time, the total power which can be provided is limited, after the power requirement of the whole vehicle high-low voltage accessory is met, the power which can be used for driving the vehicle to run is limited, the vehicle speed is required to be limited at this time, the user is forbidden to increase the vehicle speed to above a preset vehicle speed threshold value, the engine is ensured not to be overloaded, and the vehicle can run at the vehicle speed threshold value only when the vehicle is fastest at this time. And (3) until the fault of the power battery is eliminated, determining that the exiting condition is met, exiting the emergency starting mode, and performing the conventional starting mode.

In summary, the control method for emergency starting provided by the embodiment of the application can control the motor controller to enter the standby mode after entering the emergency starting mode, and perform self-checking on the motor controller, so as to ensure that the motor controller can smoothly execute emergency starting; after the self-checking is passed, starting the engine through a 12V storage battery, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time, wherein the stopping of the engine is forbidden at the moment to ensure that the vehicle cannot run due to lack of a power source and sufficient power supply is ensured; then, when the engine speed is greater than or equal to a preset speed threshold, controlling the motor controller to enter a voltage control mode, detecting the direct-current side voltage of the motor controller in real time, and when the engine speed reaches the speed threshold, controlling the voltage output of the motor controller, so as to ensure that the motor controller can output stable high voltage and supply power to the high-voltage accessories; when the voltage of the direct current side is larger than or equal to a preset voltage threshold, the direct current converter is used for supplying power to the low-voltage accessory, the motor controller enters a standby mode after control, the direct current converter is used for converting high voltage into low voltage, then supplying power to the low-voltage accessory, the whole automobile is powered on, after the low-voltage accessory is powered on, emergency starting is determined to be completed, the vehicle speed limit is started until the exit condition is met, the vehicle speed limit is carried out until the exit condition is met, and the vehicle speed limit is carried out, so that enough power can be ensured to maintain the operation of the high-voltage accessory and the low-voltage accessory when the engine is independently driven.

In some embodiments, as shown in fig. 2, before entering the emergency start mode, the control method of emergency start further includes:

step 201: vehicle state information is acquired.

In particular embodiments, the vehicle status information includes status information for various components in the vehicle, wherein the emergency start mode is only required if the status information indicates a failure of the power battery.

Step 202: and determining the battery temperature of the power battery according to the vehicle state information, if the battery temperature is less than or equal to a preset temperature threshold value, determining that the power battery has a first type of starting problem, and entering an emergency starting mode.

When the power battery is in specific implementation, the power battery fails to continuously supply power, and the power battery can be divided into two types, namely the power battery is too low in temperature, so that the performance of the power battery is seriously reduced and cannot be effectively output, the failure can be relieved along with the rising of the temperature, and the emergency starting mode can be exited after the power battery recovers the power supply capacity to perform normal hybrid driving.

Wherein the temperature threshold can be-30 ℃, the performance of the power battery is seriously reduced at the temperature, and the power battery can hardly be charged and discharged, and the overload is caused by discharging at the moment; at this time, overcharge is caused by charging; the service life of the power battery can be damaged by both charging and discharging, so when the battery temperature of the power battery is less than or equal to a preset temperature threshold value, the first type of starting problem of the power battery is determined, and the power battery enters an emergency starting mode, so that the power battery is ensured not to be overloaded or overcharged. And after entering the emergency starting mode, the relay of the power battery can be kept in an open state, namely, the connection between the power battery and a whole vehicle line is disconnected, so that the power battery cannot be charged or discharged under any condition, and the absolute safety of the power battery is ensured.

Step 203: and responding to the preset fault signal of the power battery in the vehicle state information, determining that the power battery has a second type of starting problem, and entering an emergency starting mode.

In practice, another type of fault is that the power battery has serious hardware fault, which causes the power battery to lose power supply capability, for example: the preset fault signal is a five-stage fault signal of the power battery.

The five-stage fault of the power battery belongs to serious faults, and needs to be stopped immediately, the power supply of the high-voltage accessory is disconnected, the high-voltage accessory is discharged rapidly, the power is stopped, and the power can be recovered after the power is restarted when the fault condition is not met.

Therefore, when the power battery has five-stage faults, the power battery basically loses the power supply capacity, and the high-voltage and low-voltage accessories in the vehicle are powered down, so that an emergency starting mode needs to be started, and a user can drive the vehicle to a maintenance site for fault maintenance.

The fault level of the power battery is used for simplifying fault processing logic, and the fault level can be generally classified into 3-5 levels, taking 5 levels as an example (when 3 levels are classified, 1 and 2 levels in 5 levels can be combined into 3 and 1 level of classification, 4 and 5 levels in 5 levels are combined into 3 and 3 levels of classification, and 3 levels in 5 levels are changed into 3 and 2 levels of classification by way of example);

And 1, alarming, namely transmitting alarming information to a driver, wherein the output performance of the power battery is not influenced.

And 2, slightly failing, and reducing the output rate of the power battery to run the vehicle. And automatically recovering when the fault condition is not satisfied.

And 3, normally failing, entering a failure mode, stopping, and recovering by communication or other modes when the failure condition is not satisfied.

And 4, normally, stopping the machine when the machine enters a fault mode, and recovering the machine after the machine is powered on again when the fault condition is not satisfied.

And 5, stopping immediately after serious faults occur, cutting off the power supply of the high-voltage accessories, rapidly discharging the high-voltage accessories, stopping the vehicle, and restarting the power supply when the fault conditions are not met.

In the embodiment of the application, the preset fault signal is exemplified by a five-stage fault signal, and the preset fault signal can be defined according to the actual use condition, and is not particularly limited herein, so that when the five-stage fault occurs in the power battery, the power battery basically loses the power supply capacity, and both high and low voltage accessories in the vehicle are powered down, and an emergency starting mode needs to be started, so that a user can drive the vehicle to a maintenance site for fault maintenance.

In some embodiments, as shown in fig. 3, controlling the motor controller to enter a standby mode includes:

Step 301: and initializing the high-voltage accessory of the vehicle, and determining whether the high-voltage accessory meets the requirement of an emergency starting mode.

In specific implementation, the initialization refers to sending an initialization request to the high-voltage accessories of the whole vehicle, requesting the direct-current converter controller, finishing the self-checking of the controller by the engine management system controller, and detecting the high-voltage accessories controlled by each controller to determine whether the high-voltage accessories generate faults affecting emergency starting due to the faults of the power battery.

Step 302: and responding to the requirement of meeting the emergency starting mode, and detecting the power-on condition of the whole vehicle.

When the method is specifically implemented, after the whole vehicle completes initialization detection, if the high-voltage accessory has no fault, detection of the power-on condition of the whole vehicle can be continued, and by way of example, no person in the main driving position is detected, and when the main driving door is closed to open, it is determined that the whole vehicle meets the power-on condition. Or the vehicle is in a power-down state, the key is placed in the vehicle, and when the brake pedal is detected to be stepped down, the fact that the whole vehicle meets the power-up condition is determined. I.e. a detection is made as to whether a power-up request has been received.

Step 303: and in response to the condition of the whole vehicle power-on, controlling the power battery relay to be kept on, and controlling the motor controller to enter a standby mode.

When the whole vehicle meets the power-on condition, the relay of the power battery is controlled to be kept on in order to protect the power battery from further damage, so that the power battery is disconnected from the whole vehicle line, and the motor controller is controlled to enter a standby mode, so that the power-on and emergency starting of the whole vehicle are prepared.

In some embodiments, as shown in fig. 4, self-checking the motor controller includes:

step 401: and performing insulation detection and interlocking detection on the high-low voltage loop of the motor controller.

In the specific implementation, after the high-voltage accessory is detected, whether the motor controller directly connected with the power battery fails or not needs to be determined, so that insulation detection and interlocking detection are required to be carried out on a high-voltage loop and a low-voltage loop of the motor controller, and the motor controller is ensured to be capable of completing emergency starting.

Step 402: in response to the insulation detection passing, and the interlock detection passing, the motor controller is determined to pass the self-detection.

In the specific implementation, if the insulation detection is passed and the interlocking detection is passed, the motor controller is proved to have no insulation fault and no interlocking fault due to the damage of the power battery, and the emergency starting process can be smoothly carried out.

Step 403: in response to the insulation detection failing, or the interlock detection failing, it is determined that the motor controller fails the self-test.

In the specific implementation, if the insulation detection is not passed, the situation that electric leakage occurs between the high-voltage loop and the low-voltage loop, which possibly causes damage to low-voltage accessories, is determined that the motor controller fails the self-detection, the emergency starting process is stopped, and an alarm prompt is carried out. If the interlocking detection is not passed, the mutual locking between the high-voltage loop and the low-voltage loop is indicated, the motor controller is determined to not pass the self-detection, the emergency starting process is stopped, and the alarm prompt is carried out.

In some embodiments, as shown in FIG. 5, opening the vehicle speed limit includes:

step 501: the requested vehicle speed is determined and compared with a preset vehicle speed threshold.

In specific implementation, the vehicle speed is limited through a preset vehicle speed threshold value, the difference value between the output power of the engine in full power output and the power consumed by the high-low voltage accessories of the vehicle is fully considered by the vehicle speed threshold value, the difference value is net output power, the net output power is power which can be used for driving and running of the vehicle, the vehicle speed corresponding to the net output power is the vehicle speed threshold value, for example, 120km/h, and the vehicle speed threshold values of different vehicles are different, so that the vehicle speed threshold values of different vehicles are not limited.

Step 502: in response to the requested vehicle speed being less than or equal to the vehicle speed threshold, the engine is controlled to operate at the requested vehicle speed.

When the vehicle speed control method is specifically implemented, if the requested vehicle speed is smaller than or equal to the vehicle speed threshold value, the net output power of the engine can meet the requested vehicle speed, the engine is controlled to run at the requested vehicle speed, the vehicle speed is not required to be limited, and the running dynamic property of the vehicle is ensured.

Step 503: in response to the requested vehicle speed being greater than a vehicle speed threshold, the engine is controlled to operate at the vehicle speed threshold.

When the vehicle speed is greater than the vehicle speed threshold, the net output power of the engine cannot meet the request vehicle speed, the engine is controlled to run at the vehicle speed threshold, the vehicle speed needs to be limited, the vehicle speed cannot exceed the vehicle speed threshold, the engine of the vehicle cannot be overloaded, and the running safety is guaranteed.

In some embodiments, as shown in fig. 6, after the vehicle speed limit is started, the control method for emergency starting further includes:

step 601: and in response to the first type of starting problem of the power battery, detecting the battery temperature of the power battery in real time, and comparing the battery temperature with a preset safety temperature.

In specific implementation, if the power battery has the first starting problem, it is indicated that the power battery is only poor in performance due to the fact that the temperature is too low, and the electric heater and the whole vehicle heat management system can heat the power battery along with starting and supplying power to the whole vehicle, so that the temperature of the power battery is increased, and therefore the battery temperature of the power battery needs to be detected in real time, and the battery temperature and a preset safety temperature (for example, -30 ℃) are compared to determine whether the power ground pool can work normally.

Step 602: and responding to the battery temperature being less than or equal to the safety temperature, determining that the exit condition of the emergency starting mode is not met, and keeping the emergency starting mode.

When the method is implemented, if the temperature of the battery is smaller than or equal to the safe temperature, the power battery is still in a low-temperature environment, effective charge and discharge cannot be carried out, the condition that the power battery does not meet the exit condition is determined, the emergency starting mode is kept, the power battery is continuously heated until the temperature of the power battery is larger than the safe temperature, the exit condition is determined to be met, the emergency starting mode is exited, and the safety of the power battery is protected.

Step 603: and in response to the battery temperature being greater than the safety temperature, determining that an exit condition is met, and exiting the emergency start mode.

When the method is implemented, if the battery temperature is higher than the safety temperature, the power battery can be effectively charged and discharged in a low-temperature environment, the exiting condition is confirmed to be met, the emergency starting mode is exited, the normal running mode is entered, the power battery relay is closed as required, and the driving of the whole vehicle is participated.

In some embodiments, as shown in fig. 7, meeting the exit condition includes:

step 701: and in response to the second type of starting problem of the power battery, controlling the vehicle to keep an emergency starting mode until the vehicle is powered down and powered up again, acquiring new vehicle state information, and judging whether a preset fault signal of the power battery exists in the new vehicle state information.

When the method is implemented, if the second type of starting problem exists in the power battery, the power battery is indicated to have five-stage faults, the vehicle is stopped, the power supply of the high-voltage accessory is disconnected, the high-voltage accessory is rapidly discharged, and the recovery can be realized only by re-electrifying when the fault condition is not met. Therefore, it is necessary to control the vehicle to maintain the emergency start mode until the vehicle is powered down and powered up again, acquire new vehicle state information, and determine whether a preset failure signal (e.g., a five-stage failure signal) of the power battery exists in the new vehicle state information.

Step 702: and responding to the existence of a preset fault signal, determining that the exiting condition of the emergency starting mode is not met, and maintaining the emergency starting mode.

When the method is implemented, if a five-level fault signal exists, the fact that the five-level fault exists is indicated, the fault is not misreported, the fact that the exit condition is not met is determined, an emergency starting mode is maintained, and the fact that a user can drive the vehicle to a maintenance site for maintenance is guaranteed.

Step 703: and responding to the absence of a preset fault signal, determining that an exit condition is met, and exiting the emergency starting mode.

In the implementation, if the five-level fault signal does not exist, the fact that the five-level fault possibly does not exist is indicated, false alarm can be generated, the exit condition is confirmed to be met, the emergency starting mode is exited, and the user can normally use the vehicle.

It should be noted that, the method of the embodiment of the present application may be performed by a single device, for example, a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the method of an embodiment of the present application, the devices interacting with each other to accomplish the method.

It should be noted that the foregoing describes some embodiments of the present application. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Based on the same inventive concept, the application also provides a control device for emergency starting, which corresponds to the method in any embodiment.

Referring to fig. 8, the emergency start control device includes:

a self-test module 10 configured to: in response to entering an emergency starting mode, controlling the motor controller to enter a standby mode, and performing self-checking on the motor controller;

a start module 20 configured to: responding to the passing of the self-check, starting the engine through a 12V storage battery, controlling the engine to stop, and detecting the engine rotating speed of the engine in real time;

a voltage control module 30 configured to: responding to the engine rotating speed being larger than or equal to a preset rotating speed threshold value, controlling the motor controller to enter a voltage control mode, and detecting the direct-current side voltage of the motor controller in real time;

a low voltage power supply module 40 configured to: responding to the voltage of the direct current side to be more than or equal to a preset voltage threshold value, and supplying power to the low-voltage accessory through the direct current converter;

the vehicle speed limit module 50 is configured to: and in response to the low-voltage accessory power-up completion, determining that the emergency starting is completed and starting the vehicle speed limit.

For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of each module may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.

The device of the foregoing embodiment is used to implement the control method of emergency starting corresponding to any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.

Based on the same inventive concept, the application also provides an electronic device corresponding to the method of any embodiment, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the control method of emergency starting according to any embodiment when executing the program.

Fig. 9 shows a more specific hardware architecture of an electronic device according to this embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.

The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit ), microprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or one or more integrated circuits, etc. for executing relevant programs to implement the technical solutions provided in the embodiments of the present disclosure.

The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage device, dynamic storage device, or the like. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.

The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.

Communication interface 1040 is used to connect communication modules (not shown) to enable communication interactions of the present device with other devices. The communication module may implement communication through a wired manner (such as USB, network cable, etc.), or may implement communication through a wireless manner (such as mobile network, WIFI, bluetooth, etc.).

Bus 1050 includes a path for transferring information between components of the device (e.g., processor 1010, memory 1020, input/output interface 1030, and communication interface 1040).

It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.

The electronic device of the foregoing embodiment is configured to implement the control method of emergency starting corresponding to any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.

Based on the same inventive concept, the present application also provides a non-transitory computer readable storage medium storing computer instructions for causing the computer to execute the emergency start control method according to any of the embodiments.

The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.

The storage medium of the foregoing embodiments stores computer instructions for causing the computer to execute the emergency start control method according to any one of the foregoing embodiments, and has the beneficial effects of corresponding method embodiments, which are not described herein.

It will be appreciated that before using the technical solutions of the various embodiments in the disclosure, the user may be informed of the type of personal information involved, the range of use, the use scenario, etc. in an appropriate manner, and obtain the authorization of the user.

For example, in response to receiving an active request from a user, a prompt is sent to the user to explicitly prompt the user that the operation it is requesting to perform will require personal information to be obtained and used with the user. Therefore, the user can select whether to provide personal information to the software or hardware such as the electronic equipment, the application program, the server or the storage medium for executing the operation of the technical scheme according to the prompt information.

As an alternative but non-limiting implementation, in response to receiving an active request from a user, the manner in which the prompt information is sent to the user may be, for example, a popup, in which the prompt information may be presented in a text manner. In addition, a selection control for the user to select to provide personal information to the electronic device in a 'consent' or 'disagreement' manner can be carried in the popup window.

It will be appreciated that the above-described notification and user authorization process is merely illustrative, and not limiting of the implementations of the present disclosure, and that other ways of satisfying relevant legal regulations may be applied to the implementations of the present disclosure.

Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the application (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the application, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the application as described above, which are not provided in detail for the sake of brevity.

Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure the embodiments of the present application. Furthermore, the devices may be shown in block diagram form in order to avoid obscuring the embodiments of the present application, and also in view of the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the embodiments of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the application, it should be apparent to one skilled in the art that embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.

While the application has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

The present embodiments are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are within the spirit and principles of the embodiments of the application, are intended to be included within the scope of the application.

Claims

1. A control method for emergency starting, comprising:

and in response to the low-voltage accessory power-on completion, determining that emergency starting is completed and starting a vehicle speed limit.

2. The method of claim 1, further comprising, prior to entering the emergency start mode:

Acquiring vehicle state information;

determining the battery temperature of the power battery according to the vehicle state information, if the battery temperature is less than or equal to a preset temperature threshold value, determining that the power battery has a first type of starting problem, and entering the emergency starting mode; or alternatively, the process may be performed,

and responding to a preset fault signal of the power battery in the vehicle state information, determining that the power battery has a second type of starting problem, and entering the emergency starting mode.

3. The method of claim 1, wherein the vehicle further comprises a rear motor controller;

after the low-voltage accessory is powered by the direct current converter, the method further comprises:

controlling the rear motor controller to enter a standby mode;

and in response to the low-voltage accessory being powered up and the rear motor controller being in a standby mode, determining that emergency starting is completed and starting a vehicle speed limit.

4. The method of claim 1, wherein controlling the motor controller to enter a standby mode comprises:

initializing a high-voltage accessory of the vehicle, and determining whether the high-voltage accessory meets the requirement of the emergency starting mode;

Responding to the requirement of meeting the emergency starting mode, and detecting the power-on condition of the whole vehicle;

and controlling the power battery relay to be kept on in response to the condition that the power-on condition of the whole vehicle is met, and controlling the front motor controller to enter a standby mode.

5. The method of claim 1, wherein the opening the vehicle speed limit comprises:

determining a request vehicle speed, and comparing the request vehicle speed with a preset vehicle speed threshold;

controlling the engine to run at the requested vehicle speed in response to the requested vehicle speed being less than or equal to the vehicle speed threshold;

and controlling the engine to run at the vehicle speed threshold in response to the requested vehicle speed being greater than the vehicle speed threshold.

6. The method of claim 2, further comprising, after the opening the vehicle speed limit:

responding to a first type of starting problem of the power battery, detecting the battery temperature of the power battery in real time, and comparing the battery temperature with a preset safety temperature;

responding to the battery temperature being less than or equal to the safety temperature, determining that the exit condition of the emergency starting mode is not met, and keeping the emergency starting mode;

and in response to the battery temperature being greater than the safe temperature, determining that the exit condition is met, exiting the emergency start mode.

7. The method of claim 2, further comprising, after the opening the vehicle speed limit:

responding to the second type of starting problem of the power battery, controlling the vehicle to keep the emergency starting mode until the vehicle is powered down and powered up again, acquiring new vehicle state information, and judging whether a preset fault signal of the power battery exists in the new vehicle state information;

responding to the existence of the preset fault signal, determining that the exit condition of the emergency starting mode is not met, and keeping the emergency starting mode;

and responding to the absence of the preset fault signal, determining that the exit condition is met, and exiting the emergency starting mode.

8. An emergency start control device, comprising:

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 7 when the program is executed by the processor.

10. A vehicle comprising the electronic device of claim 9.