CN115520037A - Range extender control method, system, device and storage medium - Google Patents

Abstract

The invention discloses a range extender control method, system, equipment and storage medium, which belong to the technical field of new energy vehicles. and the engine controller to send corresponding control commands, and the preset operating torque corresponding to the control commands, the generator controller controls the generator to operate at the preset operating torque based on the control commands, so as to improve the The rotational speed acceleration of the engine, wherein the rotational speed acceleration is related to the resonance interval of the dual-mass flywheel, and the range extender controller controls the range extender based on the rotational speed change of the engine so that the range extender The range extender can quickly cross the resonance speed range of the dual-mass flywheel during operation, thereby reducing the resonance impact time of the drive shaft structure. Therefore, the application can improve the reliability of the drive shaft structure during the operation of the range extender.

Description

Range extender control method, system, device and storage medium

technical field

The present application relates to the technical field of new energy vehicles, in particular to a range extender control method, system, device and storage medium.

Background technique

The generator and the engine in the range extender of the existing new energy vehicles are connected by a dual-mass flywheel and the spline shaft of the motor. During the operation of the range extender, due to improper control methods, the resonance impact of the transmission shaft structure takes a long time. Long, and the impact makes the phase difference between the primary and secondary flywheels in the dual-mass flywheel too large, which exceeds the working range of the dual-mass flywheel, resulting in a decrease in the reliability of the weakest part of the drive shaft structure.

Therefore, the structural reliability of the transmission shaft system with the range extender in the prior art is relatively low.

Contents of the invention

The main purpose of the present application is to provide a range extender control method, system, device and storage medium, aiming at solving the technical problem of low structural reliability of the transmission shaft system of the range extender.

In order to achieve the above object, the present application provides a range extender control method, which is applied to a range extender, and the range extender includes a generator, an engine, a range extender controller, a generator controller and an engine controller. The range extender controller, the generator controller and the engine controller are connected in communication, and the generator and the engine are connected through a transmission shaft structure, and the transmission shaft structure includes a dual-mass flywheel;

The control method of the range extender includes the following steps:

Step S1: The range extender controller sends corresponding control commands to the generator controller and the engine controller based on the received control demand command, as well as the preset operating torque corresponding to the control command, wherein the control The demand command is issued by the vehicle controller;

Step S2: The generator controller controls the generator to operate at the preset operating torque based on the control command to increase the speed acceleration of the engine, and the range extender controller controls The rotation speed changes to control the range extender, wherein the rotation speed acceleration is correlated with the resonance interval of the dual-mass flywheel.

The step S1 includes:

The generator controller controls the generator to drive the engine to start rotating according to the preset starting torque based on the starting instruction;

When the engine controller detects that the speed of the engine is higher than the preset fuel injection speed, it controls the engine to start fuel injection until the speed reaches the preset unloading speed, and the range extender controller sends power to the generator The engine controller sends an unloading command, so that the generator controller can control the generator to unload the current torque to zero, and complete the start of the range extender.

In a possible implementation manner of the present application, the step S2 includes:

The generator controller controls the generator to load according to the preset braking torque based on the shutdown instruction, and the engine controller controls the engine to stop fuel injection based on the shutdown instruction, so that the The engine speed is reduced to zero, completing the shutdown of the range extender.

In a possible implementation manner of the present application, after the step S2, the method further includes:

The range extender controller monitors the speed of the engine;

If the rotational speed is higher than the preset fuel injection rotational speed, the engine controller is allowed to control the engine to start fuel injection;

If the rotational speed is not higher than the preset fuel injection rotational speed, an instruction to prohibit fuel injection is sent to the engine controller.

In a possible implementation manner of the present application, after the step S2, the method further includes:

The range extender controller monitors whether the range extender has a shutdown demand;

If there is a shutdown requirement, the start of the range extender is suspended.

In a possible implementation manner of the present application, after the step S2, the method further includes:

The range extender controller records the time it takes for the speed to reach the preset unloading speed;

If the time taken for the rotational speed to reach the preset unloading rotational speed is greater than the preset starting time threshold, the starting of the range extender is suspended so that the operator can check the failure of the engine.

In a possible implementation manner of the present application, the range extender control system further includes a vehicle controller, and before the step S2, the method further includes:

When the range extender controller receives the control demand instruction, monitor whether the state of the components of the range extender is abnormal;

If there is no abnormality, a control instruction is sent to the generator controller and the engine controller.

The present application also provides a range extender control device, which includes: a memory, a processor, and a range extender control program stored on the memory and operable on the processor, the range extender control The program is configured to realize the steps of the range extender control method described in any one of the above.

The present application also provides a storage medium, on which a range extender control program is stored, and when the range extender control program is executed by a processor, the steps of the range extender control method described in any one of the above are implemented. .

This application provides a control method for a range extender. In the prior art, due to improper control methods, the transmission shafting structure is subjected to a longer resonance impact time, and the impact causes the phase difference between the primary and secondary flywheels in the dual-mass flywheel to be too large. As a result, the reliability of the weakest part of the transmission shaft structure is reduced. In contrast, this application is applied to a range extender, which includes a generator, an engine, a range extender controller, a generator controller and an engine The controller, the range extender controller, the generator controller and the engine controller are connected in communication, the generator and the engine are connected through a transmission shaft structure, and the transmission shaft structure includes a dual-mass flywheel, and the range extender The generator controller sends corresponding control commands to the generator controller and the engine controller based on the received control demand commands from the vehicle controller, as well as the preset operating torque corresponding to the control commands. The control command is used to control the generator to operate according to the preset operating torque to increase the speed acceleration of the engine, and the range extender controller controls the range extender based on the speed change of the engine, Wherein, there is a correlation between the speed acceleration and the resonance range of the dual-mass flywheel, so that the range extender can quickly cross the resonance speed range of the dual-mass flywheel during operation, thereby reducing the resonance impact time borne by the transmission shaft structure, Therefore, the present application can improve the reliability of the transmission shaft system structure during the operation of the range extender.

Description of drawings

FIG. 1 is a schematic flowchart of a first embodiment of a method for controlling a range extender of the present application;

FIG. 2 is a schematic diagram of a scene of a method for controlling a range extender according to the first embodiment of the present application;

Fig. 3 is the first logical structure diagram of the control method of the range extender of the present application;

FIG. 4 is a second logical architecture diagram of the range extender control method of the present application;

Fig. 5 is a schematic structural diagram of a range extender control device in a hardware operating environment involved in the solution of the embodiment of the present application.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. Although the various steps in the flow chart in the embodiment of the present application are displayed sequentially according to the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figure may include multiple sub-steps or multiple stages, these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order is not necessarily sequential Instead, it may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

Depending on the context, the words "if", "if" as used herein may be interpreted as "at" or "when" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrases "if determined" or "if detected (the stated condition or event)" could be interpreted as "when determined" or "in response to the determination" or "when detected (the stated condition or event) )" or "in response to detection of (a stated condition or event)".

It should be noted that, in this article, step codes such as S10 and S20 are used, the purpose of which is to express the corresponding content more clearly and concisely, and does not constitute a substantive limitation on the order. Those skilled in the art may, during specific implementation, S20 will be executed first, followed by S10, etc., but these should be within the scope of protection of this application.

An embodiment of the present invention provides a method for controlling a range extender. Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a first embodiment of a method for controlling a range extender of the present application.

In this embodiment, it is applied to a range extender, and the range extender includes a generator, an engine, a range extender controller, a generator controller and an engine controller, and the range extender controller and the generator controller Communication connection with the engine controller, the generator and the engine are connected through a transmission shaft structure, the transmission shaft structure includes a dual-mass flywheel, and the range extender control method includes:

Step S1: The range extender controller sends corresponding control commands to the generator controller and the engine controller based on the received control demand command, as well as the preset operating torque corresponding to the control command, wherein the control The demand command is issued by the vehicle controller;

Step S2: The generator controller controls the generator to operate at the preset operating torque based on the control command, so as to increase the speed acceleration of the engine and increase the speed change rate of the engine, the The range extender controller controls the range extender based on the engine speed change monitored and fed back by the engine controller, wherein the speed acceleration is correlated with the resonance interval of the dual-mass flywheel.

The purpose of this embodiment is to improve the reliability of the transmission shaft system structure during the operation of the range extender.

Research and development background of this embodiment: Generally, a range extender includes a generator, an engine, a range extender controller, a generator controller, an engine controller, and the like. As shown in Figure 2, the generator and the engine are connected by a dual-mass flywheel and a motor spline shaft. The interior of the dual-mass flywheel includes a primary flywheel, an elastic element, a flange and a secondary flywheel, and the flange includes a pendulum and rollers. . However, the existing range extender control strategy makes the resonance impact time of the transmission shaft system of the range extender longer, and the impact makes the phase difference between the primary and secondary flywheels reach the limit value, which is too large and exceeds the working range of the dual-mass flywheel. The structural reliability of the transmission shaft system is reduced.

As an example, the range extender controller communicates with the generator controller and the engine controller, receives the starting, stopping, and torque demand commands from the vehicle controller, and transmits the commands to the engine controller and generator controller, and At the same time, it receives the feedback information from the engine controller and the generator controller, so as to realize the control of the range extender.

As an example, the range extender control method is applied to a range extender.

Specific steps are as follows:

Step S1: The range extender controller sends corresponding control commands to the generator controller and the engine controller based on the received control demand command, as well as the preset operating torque corresponding to the control command, wherein the control The demand command is issued by the vehicle controller;

As an example, the control demand command is an command that requires the range extender controller to control the range extender to respond, wherein the control demand command is issued by the vehicle controller, and the control demand command may be a start demand The command may be a shutdown demand command, or an acceleration demand command, etc.

As an example, the control instruction is an instruction for the range extender controller to control the operation of the range extender, wherein the control instruction is issued by the range extender controller and sent to the engine controller and the generator controller, so The above-mentioned control command may be a start command, a stop command, or an acceleration command, etc.

As an example, the preset operating torque is sent by the range extender controller to the generator controller for the generator controller to control the operation of the generator according to the preset operating torque, and the preset operating torque may be a preset starting torque , a preset braking torque, or a preset acceleration torque, etc.

As an example, the preset operating torque is calibrated through experiments.

Step S2: The generator controller controls the generator to operate at the preset operating torque based on the control command to increase the speed acceleration of the engine, and the range extender controller controls The rotation speed changes to control the range extender, wherein the rotation speed acceleration is correlated with the resonance interval of the dual-mass flywheel.

As an example, the generator controller controls the generator to operate at the preset operating torque based on the control command, so as to increase the speed acceleration of the engine and increase or decrease the speed of the engine , the range extender controller controls the range extender based on the change of the rotational speed of the engine.

As an example, controlling the range extender may be to perform start control on the range extender, may be to perform stop control on the range extender, and may also be to perform acceleration control on the range extender.

At present, in the range extender control method of new energy vehicles, when the range extender is started, the motor drives the engine to rotate. At the same time, the engine receives the start command and the position management is established. The resonance intervals overlap, and the excitation generated by the combustion work in the engine cylinder will cause the shafting to resonate. In addition, during the start-up process, the shafting stays in the resonance speed zone for a long time, which leads to a decrease in the reliability of the weakest part of the transmission shafting structure. When the range extender is stopped, the engine speed will also pass through the resonance speed range, causing the drive shaft structure to resonate.

Specifically, the resonant speed range is the engine within the preset speed range, and the transmission shaft structure resonates. Therefore, there is a correlation between the speed acceleration and the resonance range of the dual-mass flywheel. If the speed acceleration is large enough, the dual-mass flywheel can be quickly passed. The resonance interval, that is, the time in the resonance speed interval is short, so that the transmission shaft structure has no time to resonate; if the speed acceleration is not large enough, the time in the resonance speed interval increases, making the transmission shaft structure more likely to resonate.

In this embodiment, the step S1 includes:

Step A1: The generator controller controls the generator to drive the engine to start rotating according to the preset starting torque based on the starting instruction;

Step A2: When the engine controller detects that the speed of the engine is higher than the preset fuel injection speed, it controls the engine to start fuel injection until the speed reaches the preset unload speed, and the range extender controls The generator sends an unload command to the generator controller, so that the generator controller can control the generator to unload the current torque to zero, and complete the start of the range extender.

As an example, as shown in FIG. 3 , after the vehicle controller sends a starting command to the range extender controller, the range extender will send a starting command to the generator controller and the engine controller.

In this embodiment, when the generator controller receives the starting command, the generator controller controls the generator to drive the engine to rotate according to the preset starting torque; The engine controller monitors the engine speed.

As an example, the preset starting torque (T1) is the best starting torque obtained according to the experimental test, the generator loads the preset starting torque, and can drive the engine with a rotational speed of 0 to start fuel injection until the engine reaches the preset unloading Rotating speed. The preset starting torque can enable the generator to drive the engine to rotate, so that the engine speed quickly crosses the resonance speed range of the shafting, so as to reduce the excitation of the shafting due to work done in the resonance range of the dual mass flywheel.

Step S2: When the rotational speed is greater than the preset fuel injection rotational speed, increase the rotational speed to the preset unloading rotational speed by controlling the injector to start fuel injection, so that the range extender can complete the start;

In this embodiment, as shown in FIG. 3, when the rotation speed is increased to be greater than the preset fuel injection speed by the dragging of the generator, the engine controller controls the fuel injector of the engine to start injecting fuel. , when the rotation speed increases to the preset unloading rotation speed, the range extender starts up.

As an example, the fuel injector is an important part to maintain the operation of the engine. It is composed of a fuel injector body, a fuel injector, a support, a spring, etc.; The high pressure acts on the conical surface of the fuel injector. When the oil pressure exceeds the set value, the valve core of the fuel injector opens, and the high-pressure oil is sprayed out from the small hole of the nozzle. Increase engine speed.

As an example, the preset fuel injection speed (n1) is an optimum starting fuel injection speed obtained according to experimental tests, and the preset fuel injection speed is higher than the resonance speed range of the shafting.

In this embodiment, as shown in Figure 3, after the engine is successfully started, the range extender controller sends an unloading command to the generator controller, and the generator controller controls the generator to unload the torque to 0 for the normal operation of the range extender. run.

In this embodiment, the step S2 includes:

Step B1: the generator controller controls the generator to load according to the preset braking torque based on the shutdown instruction, and the engine controller controls the engine to stop fuel injection based on the shutdown instruction, so as to The speed of the engine is reduced to zero to complete the shutdown of the range extender.

As an example, if the vehicle controller sends a shutdown demand instruction to the range extender controller, the range extender controller will send the shutdown instruction to the generator controller and the engine controller.

In this embodiment, when the generator controller receives a shutdown command, the generator controller controls the generator to load with a preset braking torque to reduce the engine speed to zero for the booster The programmer completes the shutdown.

As an example, the preset braking torque (T2) is the best braking torque obtained according to the test, and the preset braking torque can make the speed of the engine drop rapidly from the current speed when the range extender is stopped. It is 0, that is, the range extender quickly crosses the resonance speed range of the shafting.

As an example, using the load torque of the generator to "brake" the engine to achieve a rapid shutdown can improve the NVH performance of the range extender during the shutdown process and reduce the vibration of the shafting; where NVH is noise (Noise), vibration (Vibration ), the abbreviation of Harshness, which is used to evaluate the vibration and noise state inside and outside the vehicle during idling and driving.

As an example, as shown in FIG. 4 , after the engine controller receives the shutdown command, the engine controller controls the engine to execute the shutdown command, the engine stops fuel injection to turn off the engine, and the range extender is shut down.

When the traditional range extender needs to be started, the engine controller first detects the status of each component of the range extender after receiving the start command of the range extender from the vehicle controller, and starts to start the range extender if there is no fault, and sends the start command to The engine controller and the generator controller simultaneously give the generator a specific torque to drive the engine to rotate and start by means of a look-up table. The engine rotates under the drag of the motor, and when the engine controller detects that the engine position management is established, it starts fuel injection and ignition. After the engine is ignited successfully and the engine speed increases to a certain value, the engine controller commands the generator controller to control the generator to unload to zero, and the start of the range extender is completed. When the traditional range extender needs to be stopped, after the engine controller receives the stop command of the range extender from the vehicle controller, the engine controller controls the generator to untwist through the generator controller, and at the same time controls the engine to return to idle speed through the engine controller In the working condition, after idling for a period of time, close the throttle, stop fuel injection and ignition, turn off the engine, and stop the range extender. This traditional control strategy will cause the shafting of the range extender to withstand the resonance impact for a long time, resulting in a decrease in the reliability of the transmission shafting.

Therefore, in the development and matching process of the range extender, it is necessary to follow the working condition constraints of the flywheel, and optimize the control strategy so that the range extender can quickly pass through the resonance speed region of the dual mass flywheel, and the engine will not spray in the resonance range of the dual mass flywheel. Oil starts, does not provide work excitation to the shafting, to ensure the reliable operation of the range extender.

In this embodiment, through the above control method, the range extender quickly crosses the resonance speed range of the shaft system during the process of starting and stopping, that is, the engine starts without fuel injection and does not provide work to the shaft in the dual mass flywheel resonance range The excitation of the system ensures the reliable operation of the range extender.

Further, based on the first embodiment of the present application, another embodiment of the present application is provided. In this embodiment, as shown in FIG. 3 , the dual control strategy of the range extender controller and the engine controller is also adopted to realize Double protection for the shafting of the range extender.

In this embodiment, after the step S2, the method further includes:

Step S30: the range extender controller monitors the engine speed;

In this embodiment, while the above-mentioned engine controller monitors the rotational speed of the engine through the range extender controller, the range extender controller also monitors the rotational speed of the engine through the range extender controller, thereby realizing dual monitoring.

Step S40: If the rotational speed is higher than the preset fuel injection rotational speed, allow the engine controller to control the engine to start fuel injection;

In this embodiment, if the rotational speed is higher than the preset fuel injection rotational speed, the rotational speed is increased to the preset unloading rotational speed by controlling the fuel injector to start fuel injection, so that the range extender can complete the start-up.

Step S50: If the rotational speed is not higher than the preset fuel injection rotational speed, send an instruction to prohibit fuel injection to the engine controller.

In this embodiment, if the rotational speed is not higher than the preset fuel injection rotational speed, an engine no fuel injection command is sent to the engine controller to stop the start of the range extender.

In this embodiment, after the step S2, the method further includes:

Step S60: the range extender controller monitors whether the range extender needs to be shut down;

As an example, during the start-up process of the range extender, it may be necessary to stop due to abnormal state of components or forced shutdown, etc., and the range extender controller needs to dynamically monitor whether the vehicle needs to stop.

Step S70: Stop starting the range extender if there is a need to stop.

As an example, if there is a need to stop, the range extender controller stops the start of the range extender.

In this embodiment, before the step S2, the method further includes:

Step S80: When the controller of the range extender receives the starting demand instruction from the vehicle controller, monitor whether the state of the components of the range extender is abnormal;

In this embodiment, the range extender controller communicates with the generator controller and the engine controller. After the range extender controller receives the starting demand instruction from the vehicle controller, it starts to detect whether the status of each component of the range extender is normal.

Step S90: If there is no abnormality, send a starting command to the generator controller and the engine controller.

In this embodiment, if there is an abnormality, it will be fed back to the vehicle controller, and the instrument panel of the vehicle will report a starting fault; if there is no abnormality, the range extender controller will issue a starting command and transmit it to the engine controller and generator controller , and simultaneously receive the feedback information from the engine controller and the generator controller.

In this embodiment, after the step S2, the method further includes:

Step S100: the range extender controller records the time taken for the speed to reach the preset unloading speed;

In this embodiment, the time taken for the rotation speed to reach the preset unloading rotation speed is recorded by the range extender controller.

The step S110: if the time taken for the rotational speed to reach the preset unloading rotational speed is greater than the preset starting time threshold, stop the starting of the range extender so that the operator can check the failure of the engine.

As an example, in the process of starting the engine, the engine may start slowly due to engine failure or other component failures of the range extender. Therefore, it can be determined that if the time taken for the speed to reach the preset unloading speed is greater than the preset starting time threshold, the engine start is suspended for the operator to check the failure of the engine.

In this embodiment, when it is necessary to suspend the starting of the engine, the range extender controller sends a suspension start command to the engine controller and the generator controller, the engine stops fuel injection, and the generator unloads the torque to reduce the engine speed. After it is 0, the range extender controller sends a restart command to the engine controller and generator controller, the generator drives the engine to rotate again according to the preset restart torque, and the engine controller monitors the engine through the range extender controller When the speed is greater than the preset fuel injection speed, the speed is increased to the preset unloading speed by controlling the injector to start fuel injection, so that the range extender can complete the start; wherein, the preset restart The torque is greater than the preset starting torque, and the torque for each next continuous restart is greater than the torque for the last restart.

In this embodiment, the restarting torque is continuously increased to automatically detect whether different starting torques can restart the engine, so as to avoid the engine being unable to start normally due to special reasons at that time, but in special cases, automatic restarting can save time , every restart of the engine is recorded by the range extender controller, and prompts the driver for the driver to maintain the engine in an idle state.

In this embodiment, when the range extender controller detects that the number of consecutive restarts of the engine is greater than the preset number of times, the restart of the engine is prohibited and an alarm is issued for the driver or other operators to troubleshoot the engine .

In this embodiment, through the control of engine fuel injection, dual control strategies of RECU and ECU are adopted to realize double protection for the shaft system of the range extender; monitoring is also carried out before and during the engine start to stop the range extender in time. The start of the range extender also protects the range extender, and can also judge whether there is a fault in the engine by recording the time it takes for the speed to reach the preset unloading speed, and can detect and eliminate the fault in time.

The present application also provides a range extender control device, the device comprising:

A sending module, configured to send a corresponding control command to the generator controller and the engine controller based on the received control demand command, and a preset operating torque corresponding to the control command, wherein the control demand command is provided by the vehicle The controller issues;

A control module, configured to control the generator to operate at the preset operating torque based on the control instruction, so as to increase the rotational speed acceleration of the engine, and the range extender controller is based on the rotational speed change of the engine, to The range extender is controlled, wherein there is a correlation between the rotational speed acceleration and the resonance interval of the dual-mass flywheel.

In a possible implementation manner of the present application, the sending module includes:

a control unit, configured to control the generator to drive the engine to start rotating according to the preset starting torque based on the starting instruction;

The starting unit is used to control the engine to start fuel injection when it is detected that the speed of the engine is higher than the preset fuel injection speed, until the speed reaches the preset unloading speed, the range extender controller sends power to the generator The engine controller sends an unloading command, so that the generator controller can control the generator to unload the current torque to zero, and complete the start of the range extender.

In a possible implementation manner of the present application, the control module includes:

a shutdown unit, configured to control the generator to be loaded with the preset braking torque based on the shutdown instruction, and the engine controller to control the engine to stop fuel injection based on the shutdown instruction, so that the engine The speed of the engine is reduced to zero, and the shutdown of the range extender is completed.

In a possible implementation manner of the present application, the device further includes:

a first monitoring module, configured to monitor the rotational speed of the engine;

A permission module, configured to allow the engine controller to control the engine to start fuel injection if the rotational speed is higher than the preset fuel injection rotational speed;

A prohibition module, configured to send a fuel injection prohibition instruction to the engine controller if the rotational speed is not higher than the preset fuel injection rotational speed.

In a possible implementation manner of the present application, the device further includes:

The second monitoring module is used to monitor whether the range extender has a shutdown demand;

The first suspending module is used to suspend the starting of the range extender if there is a need to shut down.

In a possible implementation manner of the present application, the device further includes:

A recording module, configured to record the time taken for the rotational speed to reach the preset unloading rotational speed;

The second suspending module is used for suspending the starting of the range extender if the time taken for the rotational speed to reach the preset unloading rotational speed is greater than the preset starting time threshold, so that the operator can check the failure of the engine.

In a possible implementation manner of the present application, the device further includes:

A detection module, configured to monitor whether the state of the components of the range extender is abnormal when the range extender controller receives the control demand instruction;

The sending module is configured to send control instructions to the generator controller and the engine controller if there is no abnormality.

The specific implementation of the range extender control device of the present application is basically the same as the embodiments of the range extender control method described above, and will not be repeated here.

The present application also provides a storage medium, on which a range extender control program is stored, and when the range extender control program is executed by a processor, the steps of the range extender control method described in any one of the above are implemented. .

The specific implementation manner of the storage medium of the present application is basically the same as the above-mentioned embodiments of the range extender control, and will not be repeated here.

Referring to FIG. 5 , FIG. 5 is a schematic diagram of a device structure of a hardware operating environment involved in the solution of the embodiment of the present application.

As shown in FIG. 5 , the range extender control device may include: a processor 1001 , a memory 1005 , and a communication bus 1002 . The communication bus 1002 is used to realize connection and communication between the processor 1001 and the memory 1005 .

Optionally, the range extender control device may further include a user interface, a network interface, a camera, an RF (Radio Frequency, radio frequency) circuit, a sensor, a WiFi module, and the like. The user interface may include a display screen (Display), an input sub-module such as a keyboard (Keyboard), and an optional user interface may also include a standard wired interface and a wireless interface. The network interface may include a standard wired interface and a wireless interface (such as a WI-FI interface).

Those skilled in the art can understand that the structure of the range extender control device shown in Figure 5 does not constitute a limitation to the range extender control device, and may include more or less components than those shown in the figure, or combine certain components, or different component arrangements.

As shown in FIG. 5 , the memory 1005 as a storage medium may include an operating system, a network communication module, and a range extender control program. The operating system is a program that manages and controls the hardware and software resources of the range extender control device, and supports the operation of the range extender control program and other software and/or programs. The network communication module is used to realize the communication between various components inside the memory 1005, and communicate with other hardware and software in the range extender control system.

In the range extender control device shown in FIG. 5 , the processor 1001 is configured to execute the range extender control program stored in the memory 1005 to implement the steps of the range extender control method described in any one of the above.

The specific implementation manner of the range extender control device of the present application is basically the same as the embodiments of the above-mentioned range extender control method, and will not be repeated here.

The present application also provides a storage medium, on which a range extender control program is stored, and when the range extender control program is executed by a processor, the steps of the range extender control method described in any one of the above are implemented. .

The specific implementation manner of the storage medium of the present application is basically the same as the above-mentioned embodiments of the range extender control, and will not be repeated here.

It should be noted that, as used herein, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

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

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM) as described above. , magnetic disk, optical disk), including several instructions to make a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method described in each embodiment of the present invention.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. A method for controlling a range extender, characterized in that it is applied to a range extender, and the range extender includes a generator, an engine, a range extender controller, a generator controller and an engine controller, and the range extender The communication connection between the generator controller, the generator controller and the engine controller, the generator and the engine are connected through a transmission shaft structure, and the transmission shaft structure includes a dual-mass flywheel; The control method of the range extender includes the following steps: Step S1: The range extender controller sends corresponding control commands to the generator controller and the engine controller based on the received control demand command, as well as the preset operating torque corresponding to the control command, wherein the control The demand command is issued by the vehicle controller; Step S2: The generator controller controls the generator to operate at the preset operating torque based on the control command to increase the speed acceleration of the engine, and the range extender controller controls The rotation speed changes to control the range extender, wherein the rotation speed acceleration is correlated with the resonance interval of the dual-mass flywheel. 2. The method for controlling the range extender according to claim 1, wherein the step S1 comprises: The generator controller controls the generator to drive the engine to start rotating according to the preset starting torque based on the starting instruction; When the engine controller detects that the speed of the engine is higher than the preset fuel injection speed, it controls the engine to start fuel injection until the speed reaches the preset unloading speed, and the range extender controller sends power to the generator The engine controller sends an unloading command, so that the generator controller can control the generator to unload the current torque to zero, and complete the start of the range extender. 3. The method for controlling the range extender according to claim 1, wherein the step S2 includes: The generator controller controls the generator to load according to the preset braking torque based on the shutdown instruction, and the engine controller controls the engine to stop fuel injection based on the shutdown instruction, so that the The engine speed is reduced to zero, completing the shutdown of the range extender. 4. The range extender control method according to claim 2, characterized in that, after the step S2, the method further comprises: The range extender controller monitors the speed of the engine; If the rotational speed is higher than the preset fuel injection rotational speed, the engine controller is allowed to control the engine to start fuel injection; If the rotational speed is not higher than the preset fuel injection rotational speed, an instruction to prohibit fuel injection is sent to the engine controller. 5. The method for controlling the range extender according to claim 2, characterized in that, after the step S2, the method further comprises: The range extender controller monitors whether the range extender has a shutdown demand; If there is a shutdown requirement, the start of the range extender is suspended. 6. The range extender control method according to claim 2, characterized in that, after the step S2, the method further comprises: The range extender controller records the time it takes for the speed to reach the preset unloading speed; If the time taken for the rotational speed to reach the preset unloading rotational speed is greater than the preset starting time threshold, the starting of the range extender is suspended so that the operator can check the failure of the engine. 7. The range extender control method according to claim 1, wherein the range extender control system further comprises a vehicle controller, and before the step S2, the method further comprises: When the range extender controller receives the control demand instruction, monitor whether the state of the components of the range extender is abnormal; If there is no abnormality, a control instruction is sent to the generator controller and the engine controller. 8. A range extender control device, characterized in that the device comprises: A sending module, configured to send a corresponding control command to the generator controller and the engine controller based on the received control demand command, and a preset operating torque corresponding to the control command, wherein the control demand command is provided by the vehicle The controller issues; A control module, configured to control the generator to operate at the preset operating torque based on the control instruction, so as to increase the rotational speed acceleration of the engine, and the range extender controller is based on the rotational speed change of the engine, to The range extender is controlled. 9. A range extender control device, characterized in that the device includes: a memory, a processor, and a range extender control program stored on the memory and operable on the processor, the range extender The range extender control program is configured to implement the steps of the range extender control method according to any one of claims 1-7. 10. A storage medium, characterized in that a range extender control program is stored on the storage medium, and when the range extender control program is executed by a processor, the range extender control program according to any one of claims 1 to 7 is realized. The steps of the programmer control method.

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