CN114690746A - Range extender control method and range extender control system - Google Patents
Range extender control method and range extender control system Download PDFInfo
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- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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Abstract
The application provides a range extender control method and a range extender control system. After the vehicle control unit is electrified and self-checked, the other controllers including the internal combustion engine controller, the battery controller and the motor controller are electrified and self-checked, then the vehicle control unit acquires state information of the power source equipment fed back by the other controllers, and determines a control mode according to the state information and the power requirement of the power source equipment, so that the range extender control system drives the power takeoff to work according to the control mode. The intelligent control mode is provided for the power takeoff based on the state information and the power demand of the power source equipment, the risk that the whole special vehicle is paralyzed or even scrapped due to the fact that a single power source breaks down is avoided, the state of the vehicle and the actual use condition are better matched, the oil consumption and the energy consumption are reduced, and the energy conservation and the emission reduction are realized.
Description
Technical Field
The application relates to the technical field of vehicle control, in particular to a range extender control method and a range extender control system.
Background
Special cars are an important component of the automotive industry. In recent years, with the development of national economy, the continuous improvement of purchasing ability of people, the rising of the demand of computing high-quality and high-added-value products, the accelerated emergence of laws and regulations such as energy-saving standard laws and regulations, safety standard laws and regulations and the like and the implementation of energy conservation and emission reduction, higher demands and requirements are provided for special vehicles.
At present, a power takeoff is arranged on the side of an internal combustion engine or a transmission as an independent component or is driven by a motor to work, regardless of whether a conventional special vehicle or a new energy special vehicle. The power take-off power source is a single internal combustion engine or a single motor, and the work of the power take-off needs to be established on the basis of the work of the internal combustion engine or the motor.
Therefore, the existing power sources for controlling the power takeoff are all single power drives, such as an internal combustion engine or an electric motor. Once the power source breaks down, the whole special vehicle is paralyzed, and the carried goods may have a scrap risk. In addition, the existing control on the power takeoff can only depend on a single power source, and the problem that the vehicle state of the special vehicle is not matched with the actual use condition exists, so that the problem that the oil consumption or the energy consumption is high and the energy conservation and emission reduction cannot be realized is further caused.
Disclosure of Invention
The application provides a range extender control method and a range extender control system, which are used for providing a range extender control method and a range extender control system for a special vehicle and aim to solve the problem caused by single power source of a power takeoff of the special vehicle in the prior art.
In a first aspect, the application provides a control method of a range extender, which is applied to a control system of the range extender, wherein a power takeoff is integrated at the rear end of a driving motor of the control system of the range extender; the method comprises the following steps:
after the vehicle controller in the range extender control system is electrified and self-checked, the other controllers are electrified and self-checked, and the other controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system;
after the other controllers perform self-checking, the vehicle controller acquires state information of power source equipment fed back by the other controllers, wherein the power source equipment comprises an internal combustion engine, a high-voltage battery and the driving motor;
and the vehicle control unit determines a control mode according to the state information of the power source equipment and the power demand, so that the range extender control system works according to the control mode to drive the power takeoff to work.
In one possible design, the vehicle control unit obtains the status information of the power source equipment fed back by the rest controllers, and the status information comprises:
acquiring error reporting information of the internal combustion engine fed back by the internal combustion engine controller;
acquiring error reporting information and charge state information of the high-voltage battery fed back by the battery controller;
and acquiring error reporting information of the driving motor fed back by the motor controller.
In one possible design, after the vehicle control unit obtains the status information of the power source equipment fed back by the rest controllers, the method further includes:
the range extender control system acquires the power demand in response to a power request of the vehicle control unit.
In one possible design, the vehicle control unit determining a control mode based on the status information of the power source device and the power demand, including:
judging whether the high-voltage battery and the driving motor have no faults or not according to the error information of the high-voltage battery and the error information of the driving motor;
if so, determining the control mode to be a first control mode according to the power requirement and the charge state information of the high-voltage battery;
if not, determining that the control mode is the second control mode.
In one possible design, the determining, by the vehicle control unit, the control mode as the first control mode according to the power demand and the state of charge information of the high-voltage battery includes:
comparing the power demand to a rated power of the drive motor; and the number of the first and second groups,
comparing the state of charge of the high-voltage battery with a first preset charge threshold value, wherein the first preset charge threshold value is used for representing the minimum enabled state of charge of the high-voltage battery;
if the power requirement is smaller than the rated power of the driving motor and the charge state of the high-voltage battery is larger than the first preset charge threshold value, determining that the first control mode is a pure electric driving mode;
if the power requirement is greater than or equal to the rated power of the driving motor and the charge state of the high-voltage battery is greater than the first preset charge threshold value, determining that the first control mode is a hybrid driving mode;
and if the charge state of the high-voltage battery is smaller than the first preset charge threshold value, determining that the first control mode is a driving and power generation mode.
In one possible embodiment, if the high-voltage battery or the drive motor fails, the vehicle control unit determines that the second control mode is an internal combustion engine drive mode.
In one possible design, the vehicle controller determines that the control mode is the internal combustion engine driving mode if the state of charge of the high-voltage battery is greater than or equal to a second preset charge threshold, where the second preset charge threshold is used for representing a maximum enabled state of charge of the high-voltage battery.
In one possible design, the electric-only drive mode includes:
the vehicle control unit sends a control instruction to the battery controller and the motor controller;
the battery controller controls the high-voltage battery to supply power, the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, and the motor controller controls the driving motor to drive the power takeoff to work.
In one possible design, the hybrid drive mode includes:
the vehicle control unit sends control instructions to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
the motor controller controls the driving motor to drive the power takeoff to work, the vehicle control unit controls the clutch to be connected, the driving motor drives the internal combustion engine to start, and the internal combustion engine and the driving motor drive the power takeoff to work together.
In one possible design, the driving and generating modes include:
the vehicle control unit sends control instructions to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
the motor controller controls the driving motor to work, the vehicle control unit controls the clutch to be connected, the driving motor drives the internal combustion engine to stop working after starting, and the internal combustion engine drives the power takeoff to work and simultaneously drives the driving motor to generate power for the high-voltage battery.
In one possible embodiment, in the hybrid drive mode, the lower boundary of the maximum economic power interval of the internal combustion engine is the power source for operating the power take-off;
in the driving and power generation mode, the upper boundary of the maximum economic power interval of the internal combustion engine is a power source for driving the power takeoff to work.
In one possible design, the internal combustion engine driving mode includes:
the vehicle control unit sends a control command to the internal combustion engine controller;
the internal combustion engine controller controls a low-voltage battery to supply power to a starting motor, the starting motor drives the internal combustion engine to start, and the vehicle control unit controls the clutch to be engaged and simultaneously drives the power takeoff to work.
In one possible design, after starting the internal combustion engine, the starter motor is also ready to enter a power generation state in response to a power generation command of the vehicle control unit.
In one possible design, if the vehicle control unit does not have the power request, the method further includes:
the vehicle control unit sends a shutdown command and a power-off command to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller, the motor controller, and the internal combustion engine controller stop respective current operations and self-test and power down in response to the stop command and the power down command.
In a second aspect, the present application provides a range extender control system, comprising: the system comprises an internal combustion engine, a high-voltage battery and a driving motor;
the internal combustion engine is connected with a coaxial rotor of the driving motor, and a power takeoff is integrated at the rear end of the driving motor;
the driving motor is controlled by a motor controller, the motor controller is connected with a battery controller, and the battery controller is used for controlling the high-voltage battery;
the battery controller is further connected with a vehicle control unit, the vehicle control unit is connected with an internal combustion engine controller, and the internal combustion engine controller is used for controlling the internal combustion engine.
In one possible design, further comprising: starting a motor and a low-voltage battery;
the starting motor is arranged on a front-end wheel train of the internal combustion engine, is respectively connected with the internal combustion engine controller and the low-voltage battery, and has starting and power generation functions.
In one possible design, further comprising: a clutch and power distribution unit;
the clutch is connected between the internal combustion engine and the driving motor;
the power distribution unit is connected between the motor controller and the battery controller.
The application provides a range extender control method and a range extender control system. After the vehicle controller in the range extender control system is electrified and self-checked, the other controllers are electrified and self-checked, and the other controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system. After the other controllers are subjected to self-checking, the vehicle control unit acquires state information of power source equipment fed back by the other controllers, wherein the power source equipment comprises an internal combustion engine, a high-voltage battery and a driving motor, and then determines a control mode according to the state information of the power source equipment and a power demand, so that the range extender control system works according to the control mode to drive the power takeoff to work. The intelligent control mode is provided for the power takeoff based on the state information and the power demand of the power source equipment, so that the power source of the power takeoff is not single any more, the risk that the whole special vehicle is paralyzed or even scrapped due to the fact that the single power source breaks down can be avoided, the intelligent control mode can be better matched with the self state and the actual use condition of the vehicle, the oil consumption and the energy consumption are reduced, and the energy conservation and emission reduction are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a range extender control system according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a control method of a range extender according to an embodiment of the present disclosure;
fig. 3 is a schematic flowchart of another method for controlling a range extender according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of another method for controlling a range extender according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a range extender control device according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of methods and apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the above-described drawings (if any) are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The special vehicle can be a vehicle such as a flat transport vehicle, a tank truck, a water sprinkler, a garbage truck, a sewage suction truck, and the like. The special vehicle is usually provided with a Power Take Off (PTO), which is one or more sets of speed change gears, also called Power Take-Off, for the special vehicle to work. At present, a power takeoff is arranged on the side of an internal combustion engine or a transmission as an independent component or is driven by a motor to work, regardless of whether a conventional special vehicle or a new energy special vehicle. The power take-off source is a single internal combustion engine or a single motor, and the work of the power take-off needs to be established on the basis of the work of the internal combustion engine or the motor. Obviously, the power source for the power take-off control is a single power drive, such as an internal combustion engine or an electric motor. Once the power source breaks down, the whole special vehicle is paralyzed, and the carried goods are scrapped. In addition, in the prior art, the control of the power takeoff can only be performed by depending on a single power source, and the problem that the vehicle state of the special vehicle is not matched with the actual use condition exists, so that the oil consumption or the energy consumption is high, and the energy conservation and the emission reduction can not be realized.
In view of the above problems, the present application provides a range extender control method and a range extender control system. The inventive concept of the present application resides in: the power takeoff is integrated on a driving motor in a range extender control system, and a corresponding control mode is determined for the range extender control system according to the state information of power source equipment in the range extender control system and the power requirement in the actual use scene of the power takeoff, so that the range extender control system works according to the control mode to drive the power takeoff to work. Therefore, different power sources can be provided for the power takeoff based on the self state and the actual use condition of the vehicle of the special vehicle, the problem caused by single power source of the power takeoff is solved, the risk that the special vehicle bears goods and is scrapped due to the fact that the single power source breaks down can be avoided, and the oil consumption and the energy consumption can be effectively reduced, so that the energy conservation and the emission reduction are realized.
Fig. 1 is a schematic structural diagram of a range extender control system according to an embodiment of the present disclosure. As shown in fig. 1, the range extender control system provided in the embodiment of the present application includes: an internal combustion engine 11, a high voltage battery 12, and a drive motor 13.
The internal combustion engine 11 is connected to a coaxial rotor of a drive motor 13, and a power take-off 14 is integrated at the rear end of the drive motor 13.
The driving motor 13 is controlled by a motor controller 15, for example, the driving motor 13 is in communication with the motor controller 15, the driving motor 13 can operate in response to commands issued by the motor controller 15, and the motor controller 15 can be a Micro Controller Unit (MCU).
And the motor controller 15 and the battery controller 16 can be connected in communication, and command interaction can be carried out between the two. The Battery controller 16 is configured to control the high voltage Battery 12 such that the high voltage Battery 12 can maintain an optimal state and operate stably, and the Battery controller 16 may be, for example, a Battery Management System (BMS).
In addition, the battery controller 16 may be communicatively connected to a Vehicle Control Unit 17, and the Vehicle Control Unit 17 may be, for example, a Vehicle Control Unit (VCU), which is an integrated controller of a Vehicle powertrain. Correspondingly, the motor controller 15 is also communicatively connected to the vehicle control unit 17. The vehicle Control Unit 17 is also in communication with an internal combustion engine controller 18, the internal combustion engine controller 18 is used for controlling the internal combustion engine 11, and the internal combustion engine controller 18 may be, for example, an Electronic Control Unit (ECU) for managing and controlling the operation of the internal combustion engine 11.
In a possible design, referring to fig. 1, the range extender control system provided in the embodiment of the present application may further include: a starter motor 19 and a low voltage battery 20.
Here, the starter motor 19 may be provided to a front end train of the internal combustion engine 11, and the starter motor 19 may be connected to the internal combustion engine controller 18 and the low-voltage battery 20, respectively. The starter motor 19 has a starting and generating function, and the low-voltage battery 20 is used for supplying power to the starter motor 12.
Optionally, with continuing reference to fig. 1, the range extender control system provided in the embodiment of the present application may further include: a clutch 21 and a power distribution unit 22.
The clutch 21 is coaxially connected between the internal combustion engine 11 and the driving motor 13, and the vehicle control unit 17 can transmit corresponding torque by controlling the engagement of the clutch 21.
A power distribution unit 22 may be connected between the motor controller 15 and the battery controller 16 for distributing the power supplied by the high voltage battery 12.
It should be noted that the dashed lines with arrows in fig. 1 are used to represent communication connections, the solid lines with arrows are used to represent any connections that can implement control functions, such as electrical connections, physical connections, etc., and the solid lines without arrows represent coaxial or other arbitrary connections that can implement control functions. The connection mode of the embodiment of the application for the devices in the range extender control system includes, but is not limited to, the connection mode shown in fig. 1.
The range extender control system provided by the embodiment of the application has a power takeoff function, when the range extender control method provided by the embodiment of the application is carried out, different control modes can be provided for the work of the power takeoff on the basis of the self state of a vehicle represented by respective state information of an internal combustion engine, a high-voltage battery and a driving motor and the power requirement required by the actual work of the power takeoff, the problem caused by single power source of the power takeoff is solved, the risk that special vehicles bear goods and are scrapped due to the fact that a single power source breaks down can be avoided, the oil consumption and the energy consumption can be effectively reduced, and energy conservation and emission reduction are achieved.
Fig. 2 is a schematic flowchart of a control method of a range extender provided in an embodiment of the present application. The range extender control method provided by the embodiment of the application can be applied to the range extender control system shown in fig. 1, and a power takeoff is integrated at the rear end of a driving motor in the range extender control system. As shown in fig. 2, a method for controlling a range extender provided in an embodiment of the present application includes:
s101: after the whole vehicle controller in the range extender control system is powered on and self-checked, the other controllers are powered on and self-checked.
Wherein, the rest controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system.
And after the self-checking is correct, the internal combustion engine controller, the battery controller and the motor controller in the range extender control system are electrified, namely the other controllers are electrified, and the other controllers are electrified and self-checked.
If the internal combustion engine controller, the battery controller and the motor controller are found to have faults in the self-checking process, warning or stopping can be selected according to preset fault levels. If no fault is found, namely the other controllers are free from errors by self-checking, the other controllers can feed back the state information of the power source equipment to the whole vehicle controller.
S102: and after the other controllers perform self-checking, the vehicle control unit acquires the state information of the power source equipment fed back by the other controllers.
The power source apparatus includes an internal combustion engine, a high-voltage battery, and a drive motor.
After the internal combustion engine controller, the battery controller and the motor controller do not find faults after self-checking, namely, after the other controllers do not check faults, the internal combustion engine controller, the battery controller and the motor controller correspondingly feed back state information of the internal combustion engine, the high-voltage battery and the driving motor to the vehicle control unit. For example, the internal combustion engine controller feeds back state information of the internal combustion engine, the battery controller feeds back state information of the high-voltage battery, and the motor controller feeds back state information of the drive motor. And compared with the vehicle controller, the state information of the power source equipment fed back by the rest controllers is obtained.
In one possible design, possible implementations of step S102 include:
the vehicle control unit obtains the error reporting information of the internal combustion engine fed back by the internal combustion engine controller so as to know whether the internal combustion engine has a fault or not according to the error reporting information of the internal combustion engine.
The vehicle control unit obtains error reporting information and charge State information of the high-voltage battery fed back by the battery controller, so that whether the high-voltage battery has a fault or not can be known according to the error reporting information and the charge State information of the high-voltage battery, and the charge State information of the high-voltage battery can reflect the residual capacity of the high-voltage battery, namely the SOC (State of charge) of the high-voltage battery.
The vehicle control unit obtains error reporting information of the driving motor fed back by the motor controller, so that whether the driving motor has a fault or not can be known according to the error reporting information of the driving motor.
Therefore, the state information of the power source equipment can reflect the self state of the special vehicle, namely whether the self power source equipment has faults or not.
S103: the range extender control system obtains a power demand in response to a power request of the vehicle control unit.
After the vehicle control unit obtains the state information of the power source equipment, the range extender control system is ready to enter a working state, and waits for a power request sent by the vehicle control unit according to the actual working requirement of the special vehicle on the power takeoff, wherein the power request carries a power requirement, and the power requirement refers to the requirement for the range extender control system for realizing the current actual working of the power takeoff. The power takeoff has different working scenes, different required power and correspondingly different power requirements, and the power requirements can reflect the actual working scenes of the power takeoff.
Correspondingly, after the vehicle control unit acquires the state information of the power source equipment, the range extender control system waits for the vehicle control unit to send a power request. And if the vehicle control unit sends a power request, the range extender control system responds to the power request of the vehicle control unit to obtain a corresponding power demand.
In addition, if the vehicle control unit does not send a power request, namely no power request, the vehicle control unit sends a stop command and a power-off command to the battery controller, the motor controller and the internal combustion engine controller, and the battery controller, the motor controller and the internal combustion engine controller stop respective current work and perform self-checking and power-off in response to the stop command and the power-off command.
It will be appreciated that the vehicle control unit no-power request may occur during the time the range extender control system is ready to enter the operating state, or may occur during the time the range extender control system is operating, depending on the actual operating conditions of the power take-off.
S104: and the vehicle control unit determines a control mode according to the state information of the power source equipment and the power demand, so that the range extender control system works according to the control mode to drive the power takeoff to work.
And the vehicle control unit determines a corresponding control mode of the range extender control system according to the state information of the power source equipment and the power demand, so that the range extender control system works according to the determined control mode to drive the power takeoff to work. Thereby vehicle self state based on the special-purpose vehicle and the actual use condition of power takeoff provide intelligent control mode for the power takeoff, can switch according to the actual conditions of vehicle self state and power takeoff between each different control mode, and different control mode has different power supplies for the power supply of power takeoff is no longer single.
The range extender control method is applied to a range extender control system, and a power takeoff is integrated at the rear end of a driving motor in the range extender control system. After the vehicle controller is electrified and self-checked, the other controllers are electrified and self-checked, and the other controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system. After the other controllers are subjected to self-checking, the vehicle control unit acquires state information of power source equipment fed back by the other controllers, wherein the power source equipment comprises an internal combustion engine, a high-voltage battery and a driving motor, and then determines a control mode according to the state information of the power source equipment and a power demand, so that the range extender control system works according to the control mode to drive the power takeoff to work. The intelligent control mode is provided for the power takeoff based on the state information and the power demand of the power source equipment, so that the power source of the power takeoff is not single any more, the risk that the whole special vehicle is paralyzed or even scrapped due to the fact that the single power source breaks down can be avoided, the intelligent control mode can be better matched with the self state and the actual use condition of the vehicle, the oil consumption and the energy consumption are reduced, and the energy conservation and emission reduction are realized.
Fig. 3 is a flowchart illustrating another method for controlling a range extender according to an embodiment of the present disclosure. The range extender control method provided by the embodiment of the application can be applied to the range extender control system shown in fig. 1, and a power takeoff is integrated at the rear end of a driving motor in the range extender control system. As shown in fig. 3, a method for controlling a range extender provided in an embodiment of the present application includes:
s201: after the whole vehicle controller in the range extender control system is powered on and self-checked, the other controllers are powered on and self-checked.
Wherein, the rest controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system.
S202: and after the other controllers perform self-checking, the vehicle control unit acquires the state information of the power source equipment fed back by the other controllers.
The power source apparatus includes an internal combustion engine, a high-voltage battery, and a drive motor.
S203: the range extender control system obtains a power demand in response to a power request of the vehicle control unit.
The possible implementation manners, principles and technical effects of steps S201 to S203 are similar to those of steps S101 to S103, and specific contents may be described with reference to the foregoing embodiments, which are not described herein again.
S204: and the vehicle control unit judges whether the high-voltage battery and the driving motor have faults or not according to the error reporting information of the high-voltage battery and the error reporting information of the driving motor.
And the vehicle control unit determines whether the pure electric power source equipment has no fault according to the error reporting information of the high-voltage battery and the error reporting information of the driving motor, namely, whether the high-voltage battery and the driving motor have no fault is judged. The pure electric power source equipment comprises a high-voltage battery and a driving motor.
If the high voltage battery and the driving motor are not in failure, that is, if the determination result is yes, step S205 is executed. If at least one of the high-voltage battery and the driving motor has a fault, that is, if the judgment result is no, step S206 is executed.
S205: the vehicle control unit determines that the control mode is the first control mode according to the power demand and the charge state information of the high-voltage battery.
Under the condition that the pure electric power source equipment does not have a fault, the vehicle control unit determines that the control mode for the range extender control system to drive the power takeoff to work is the first control mode.
The first control mode may be a pure electric drive mode, a hybrid drive mode, or a drive and power generation mode, and is specifically determined according to a power demand and charge state information of the high-voltage battery.
The power source in the pure electric driving mode is a high-voltage battery, and the power source in the hybrid driving mode is a high-voltage battery, a driving motor and an internal combustion engine.
The power sources of the driving and power generation modes are a driving motor and an internal combustion engine, and simultaneously the power sources also drive the driving motor to generate power for the high-voltage battery.
S206: and the vehicle control unit determines the control mode to be the second control mode.
And under the condition that the pure electric power source fails, the vehicle control unit determines that the control mode for the range extender control system to drive the power takeoff to work is the second control mode.
Wherein the determined second control mode is an internal combustion engine drive mode when at least one of the high-voltage battery and the drive motor fails. The power source of the engine drive mode is only the internal combustion engine.
For example, when at least one of the high-voltage battery and the drive motor fails, the specific control procedure of the determined driving mode of the internal combustion engine is as follows:
the vehicle control unit sends a control instruction to the internal combustion engine controller, and the internal combustion engine controller responds to the control instruction to control the low-voltage battery to supply power to the starting motor, so that the starting motor rotates to drive the internal combustion engine to start. Meanwhile, the vehicle control unit controls the clutch to be connected, the starting of the internal combustion engine drives the power takeoff to work, and the power takeoff is driven.
In addition, after the starting motor drives the internal combustion engine to start, the starting motor can also enter a power generation state at any time in response to a power generation instruction of the vehicle control unit, and the functions of starting and power generation of the starting motor are realized.
The method for controlling the range extender is applied to a range extender control system, when the vehicle control unit determines a control mode for driving a power takeoff to work for the range extender control system according to the state information and the power requirement of power source equipment, whether the pure electric power source equipment has no fault is judged, and if yes, the control mode is determined to be a first control mode according to the power requirement and the charge state information of a high-voltage battery. And otherwise, if the pure electric power source equipment has a fault, determining that the control mode is the second control mode. The intelligent control mode is provided for the power takeoff based on whether pure electric power source equipment breaks down and the power demand, the optimal power source is matched for the power takeoff according to the self state of the vehicle and the actual working requirement, on one hand, the risk that the whole special vehicle is paralyzed or even scrapped due to the fact that a single power source breaks down can be avoided, on the other hand, the oil consumption and the energy consumption can be effectively reduced, and the energy conservation and emission reduction are realized.
In one possible design, a possible implementation of step S205 is shown in fig. 4. Fig. 4 is a flowchart illustrating a further method for controlling a range extender according to an embodiment of the present disclosure. As shown in fig. 4, the embodiment of the present application includes:
s301: the power demand is compared with the rated power of the drive motor.
S302: the state of charge of the high voltage battery is compared to a first preset charge threshold.
The first preset charge threshold value is used for representing the minimum enabling charge state of the high-voltage battery.
In the event of a failure-free high-voltage battery and drive motor, the vehicle control unit compares the power requirement on the one hand with the rated power of the drive motor, for example, with 50KW if the rated power of the drive motor is 50 KW. On the other hand, the charge state of the high-voltage battery is compared with a first preset charge threshold value, wherein the first preset charge threshold value is used for representing the minimum enabled charge state of the high-voltage battery. For example, assuming that the first preset charge threshold is 10%, the state of charge of the high voltage battery is compared with 10%. The rated power of the driving motor is determined by the specification of the driving motor in an actual working condition, and the first preset charge threshold is determined by the specification of the high-voltage battery, which is not limited in the embodiment of the application.
After the above comparison is made, the specific contents of the first control mode are determined according to the comparison result.
S303: and if the power requirement is smaller than the rated power of the driving motor and the charge state of the high-voltage battery is larger than a first preset charge threshold value, determining that the first control mode is the pure electric driving mode.
Through the comparison, if the power requirement is smaller than the rated power of the driving motor and the charge state of the high-voltage battery is larger than the first preset charge threshold value, the first control mode determined by the vehicle control unit is the pure electric driving mode.
Optionally, the specific control process of the electric-only driving mode determined by the vehicle control unit is as follows:
the vehicle control unit sends a control instruction to the battery controller and the motor controller, the battery controller responds to the control instruction to control the high-voltage battery to supply power, electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, and the motor controller starts to work to control the driving motor to drive the power takeoff to work, so that the power takeoff is driven in the pure electric driving mode.
S304: and if the power demand is greater than or equal to the rated power of the driving motor and the charge state of the high-voltage battery is greater than a first preset charge threshold value, determining that the first control mode is the hybrid driving mode.
By comparison, if the power demand is greater than or equal to the rated power of the driving motor and the state of charge of the high-voltage battery is greater than a first preset charge threshold, the first control mode determined by the vehicle controller is a hybrid driving mode, namely, the hybrid driving mode is both electric driving and fuel driving provided by the internal combustion engine.
Optionally, the specific control process of the hybrid driving mode determined by the vehicle control unit is as follows:
the vehicle control unit sends control instructions to the battery controller, the motor controller and the internal combustion engine controller,
the battery controller responds to the control instruction to control the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, so that the motor controller can control the driving motor to drive the power takeoff to work, and meanwhile, the vehicle control unit controls the clutch to be connected. And the driving motor drives the internal combustion engine to start, so that the internal combustion engine participates in work to drive the power takeoff to work together with the driving motor.
Optionally, in the hybrid driving mode, the lower boundary of the maximum economic power interval of the internal combustion engine is preferentially taken as a power source for driving the power takeoff to work, and the shortage of the power source provided by the internal combustion engine is partially supplemented by the power source provided by the driving motor.
S305: and if the charge state of the high-voltage battery is smaller than a first preset charge threshold value, determining that the first control mode is a driving and power generation mode.
By comparison, if the state of charge of the high-voltage battery is smaller than a first preset charge threshold value, the first control mode determined by the vehicle control unit is a driving and power generation mode, and the driving and power generation mode is used for generating power for the high-voltage battery while the internal combustion engine drives the power takeoff to work.
Optionally, the specific control process of the driving and power generation mode determined by the vehicle controller is as follows:
the vehicle control unit sends a control instruction to the battery controller, the motor controller and the internal combustion engine controller, the battery controller controls the high-voltage battery to supply power in response to the control instruction, electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, the motor controller can control the driving motor to work, the vehicle control unit controls the clutch to be connected, the driving motor stops working after driving the internal combustion engine to start, the internal combustion engine drives the power takeoff to work and simultaneously drives the driving motor to generate power for the high-voltage battery, and the internal combustion engine drives the power takeoff to work and simultaneously generates power for the high-voltage battery.
Optionally, in the driving and power generation mode, the upper boundary of the maximum economic power interval of the internal combustion engine is used as a power source for driving the power takeoff to work, and the surplus part of the power source of the internal combustion engine is used for generating power for the high-voltage battery, so that the high-voltage battery is charged.
Optionally, in some embodiments, the state of charge of the high-voltage battery may also be compared with a second preset charge threshold, where the second preset charge threshold is used to characterize the maximum enabled state of charge of the high-voltage battery, and may be, for example, 80% (the embodiment of the present application is not limited to a specific value). And if the charge state of the high-voltage battery is greater than or equal to a second preset charge threshold value, the control mode determined by the range extender control system for driving the power takeoff is an internal combustion engine driving mode. The specific control process of the driving mode of the internal combustion engine is as described in the embodiment of fig. 3, and is not described herein again.
The range extender control method provided by the embodiment of the application is applied to a range extender control system, under the condition that pure electric power source equipment has no fault, on one hand, a vehicle control unit compares the power requirement with the rated power of a driving motor, on the other hand, compares the charge state of a high-voltage battery with a first preset charge threshold value, and further determines that a first control mode is one of a pure electric driving mode, a hybrid driving mode and a driving and power generating mode according to the comparison result, so that the range extender control system drives a power takeoff to work according to the determined corresponding control mode. The intelligent control mode is provided for the power takeoff according to the state information of the vehicle and the actual working condition of the power takeoff, the switching among different control modes can match the optimal power source for the power takeoff, the risk that the whole special vehicle is paralyzed or even scrapped due to the fact that a single power source breaks down can be avoided, on the other hand, the oil consumption and the energy consumption can be effectively reduced, and the energy conservation and emission reduction are realized.
Fig. 5 is a schematic structural diagram of a range extender control device according to an embodiment of the present application. As shown in fig. 5, the range extender control device 400 according to the embodiment of the present application includes:
and the power-on and self-checking module 401 is configured to power on and self-check the other controllers after the vehicle controller in the range extender control system is powered on and self-checked, where the other controllers include an internal combustion engine controller, a battery controller, and a motor controller in the range extender control system.
The obtaining module 402 is configured to, after the other controllers perform self-checking without errors, obtain, by the vehicle controller, state information of power source devices fed back by the other controllers, where the power source devices include an internal combustion engine, a high-voltage battery, and a driving motor.
And a processing and control module 403, configured to determine a control mode according to the state information of the power source device and the power demand, so that the range extender control system operates according to the control mode to drive the power takeoff to operate.
In one possible design, the obtaining module 402 is specifically configured to:
acquiring error reporting information of the internal combustion engine fed back by an internal combustion engine controller;
acquiring error reporting information and charge state information of the high-voltage battery fed back by a battery controller;
and acquiring error reporting information of the driving motor fed back by the motor controller.
In one possible design, the obtaining module 402 is further configured to:
the range extender control system obtains a power demand in response to a power request of the vehicle control unit.
In one possible design, the processing and control module 403 is specifically configured to:
judging whether the high-voltage battery and the driving motor have faults or not according to the error reporting information of the high-voltage battery and the error reporting information of the driving motor;
if so, determining the control mode to be a first control mode according to the power requirement and the charge state information of the high-voltage battery;
if not, determining that the control mode is the second control mode.
In one possible design, the processing and control module 403 is further specifically configured to:
comparing the power demand with a rated power of the drive motor; and the number of the first and second groups,
comparing the charge state of the high-voltage battery with a first preset charge threshold value, wherein the first preset charge threshold value is used for representing the minimum enabled charge state of the high-voltage battery;
if the power requirement is smaller than the rated power of the driving motor and the charge state of the high-voltage battery is larger than a first preset charge threshold value, determining that the first control mode is a pure electric driving mode;
if the power requirement is greater than or equal to the rated power of the driving motor and the charge state of the high-voltage battery is greater than a first preset charge threshold value, determining that the first control mode is a hybrid driving mode;
and if the charge state of the high-voltage battery is smaller than a first preset charge threshold value, determining that the first control mode is a driving and power generation mode.
In one possible design, the processing and control module 403 is further configured to:
and if the high-voltage battery or the driving motor is in failure, determining that the second control mode is the internal combustion engine driving mode.
In one possible design, the processing and control module 403 is further configured to:
and if the charge state of the high-voltage battery is greater than or equal to a second preset charge threshold value, determining that the control mode is the internal combustion engine driving mode, wherein the second preset charge threshold value is used for representing the maximum enabled charge state of the high-voltage battery.
In one possible design, the electric-only drive mode includes:
the vehicle control unit sends a control instruction to the battery controller and the motor controller;
the battery controller controls the high-voltage battery to supply power, the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, and the motor controller controls the driving motor to drive the power takeoff to work.
In one possible design, the hybrid drive mode includes:
the vehicle control unit sends a control instruction to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
when the motor controller controls the driving motor to drive the power takeoff to work, the vehicle control unit controls the clutch to be engaged, the driving motor drives the internal combustion engine to start, and the internal combustion engine and the driving motor drive the power takeoff to work together.
In one possible design, the drive and generate modes include:
the vehicle control unit sends a control instruction to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
the motor controller controls the driving motor to work, the vehicle control unit controls the clutch to be connected, the driving motor stops working after driving the internal combustion engine to start, and the internal combustion engine drives the power takeoff to work and simultaneously drives the driving motor to generate power for the high-voltage battery.
In one possible embodiment, in the hybrid drive mode, the lower boundary of the maximum economic power range of the internal combustion engine is used as the power source for operating the power take-off;
in the driving and generating mode, the upper boundary of the maximum economic power interval of the internal combustion engine is used as a power source for driving the power takeoff to work.
In one possible design, the internal combustion engine driving mode includes:
the vehicle control unit sends a control command to the internal combustion engine controller;
the internal-combustion engine controller controls the low-voltage battery to supply power to the starting motor, the starting motor drives the internal-combustion engine to start, and the vehicle control unit controls the clutch to be engaged and simultaneously drives the power takeoff to work.
In one possible design, the starter motor also enters the power generation state at any time in response to the power generation instruction of the vehicle control unit after starting the internal combustion engine.
In one possible design, if the vehicle control unit has no power request, the processing and control module 403 is further configured to:
controlling the vehicle control unit to send a shutdown command and a power-off command to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller, the motor controller, and the internal combustion engine controller stop respective current operations and self-check and power down in response to the stop command and the power down command.
The range extender control device provided in the embodiment of the application can execute the corresponding steps of the range extender control method in the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device 500 may include: a processor 501, and a memory 502 communicatively coupled to the processor 501.
The memory 502 is used for storing programs. In particular, the program may include program code comprising computer-executable instructions.
The processor 501 is configured to execute computer-executable instructions stored in the memory 502 to implement the range extender control method.
The processor 501 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.
Alternatively, the memory 502 may be separate or integrated with the processor 501. When the memory 502 is a device separate from the processor 501, the electronic device 500 may further include:
the bus 503 is used to connect the processor 501 and the memory 502. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. Buses may be classified as address buses, data buses, control buses, etc., but do not represent only one bus or type of bus.
Alternatively, in a specific implementation, if the memory 502 and the processor 501 are integrated on a chip, the memory 502 and the processor 501 may communicate through an internal interface.
The present application also provides a computer-readable storage medium, which may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and in particular, the computer-readable storage medium stores computer execution instructions, and the computer execution instructions are used in the range extender control method in the above embodiments.
The present application further provides a computer program product, which includes computer execution instructions, and when the computer instructions are executed by a processor, the computer instructions implement the range extender control method in the foregoing embodiment.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (17)
1. The control method of the range extender is characterized by being applied to a range extender control system, wherein a power takeoff is integrated at the rear end of a driving motor in the range extender control system; the method comprises the following steps:
after the vehicle controller in the range extender control system is electrified and self-checked, the other controllers are electrified and self-checked, and the other controllers comprise an internal combustion engine controller, a battery controller and a motor controller in the range extender control system;
after the other controllers perform self-checking, the vehicle controller acquires state information of power source equipment fed back by the other controllers, wherein the power source equipment comprises an internal combustion engine, a high-voltage battery and the driving motor;
and the vehicle control unit determines a control mode according to the state information of the power source equipment and the power demand, so that the range extender control system works according to the control mode to drive the power takeoff to work.
2. The range extender control method of claim 1, wherein the vehicle control unit obtaining the status information of the power source equipment fed back by the remaining controllers comprises:
acquiring error reporting information of the internal combustion engine fed back by the internal combustion engine controller;
acquiring error reporting information and charge state information of the high-voltage battery fed back by the battery controller;
and acquiring error reporting information of the driving motor fed back by the motor controller.
3. The range extender control method according to claim 2, further comprising, after the vehicle control unit acquires the status information of the power source device fed back by the remaining controllers:
the range extender control system acquires the power demand in response to a power request of the vehicle control unit.
4. The range extender control method of claim 2 or 3, wherein the vehicle control unit determines a control mode according to the state information of the power source device and a power demand, comprising:
judging whether the high-voltage battery and the driving motor have no faults or not according to the error information of the high-voltage battery and the error information of the driving motor;
if so, determining the control mode to be a first control mode according to the power requirement and the charge state information of the high-voltage battery;
if not, determining that the control mode is the second control mode.
5. The range extender control method of claim 4, wherein the vehicle control unit determines the control mode as a first control mode according to the power demand and the state of charge information of the high voltage battery, comprising:
comparing the power demand to a rated power of the drive motor; and the number of the first and second groups,
comparing the state of charge of the high-voltage battery with a first preset charge threshold value, wherein the first preset charge threshold value is used for representing the minimum enabled state of charge of the high-voltage battery;
if the power requirement is smaller than the rated power of the driving motor and the charge state of the high-voltage battery is larger than the first preset charge threshold value, determining that the first control mode is a pure electric driving mode;
if the power requirement is greater than or equal to the rated power of the driving motor and the charge state of the high-voltage battery is greater than the first preset charge threshold value, determining that the first control mode is a hybrid driving mode;
and if the charge state of the high-voltage battery is smaller than the first preset charge threshold value, determining that the first control mode is a driving and power generation mode.
6. The range extender control method of claim 4, wherein the vehicle control unit determines the second control mode to be an internal combustion engine drive mode if the high voltage battery or the driving motor fails.
7. The range extender control method of claim 6, wherein the vehicle controller determines the control mode as the internal combustion engine driving mode if the state of charge of the high voltage battery is greater than or equal to a second preset charge threshold value, wherein the second preset charge threshold value is used for representing the maximum enabled state of charge of the high voltage battery.
8. The range extender control method of claim 5, wherein the electric-only drive mode comprises:
the vehicle control unit sends a control instruction to the battery controller and the motor controller;
the battery controller controls the high-voltage battery to supply power, the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit, and the motor controller controls the driving motor to drive the power takeoff to work.
9. The range extender control method of claim 5, wherein the hybrid drive mode comprises:
the vehicle control unit sends control instructions to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
the motor controller controls the driving motor to drive the power takeoff to work, the vehicle control unit controls the clutch to be connected, the driving motor drives the internal combustion engine to start, and the internal combustion engine and the driving motor drive the power takeoff to work together.
10. The range extender control method of claim 5, wherein the drive and generate mode comprises:
the vehicle control unit sends control instructions to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller controls the high-voltage battery to supply power, and the electric energy provided by the high-voltage battery reaches the motor controller and the driving motor after being distributed by the power distribution unit;
the motor controller controls the driving motor to work, the vehicle control unit controls the clutch to be connected, the driving motor drives the internal combustion engine to stop working after starting, and the internal combustion engine drives the power takeoff to work and simultaneously drives the driving motor to generate power for the high-voltage battery.
11. The range extender control method of claim 5, wherein in the hybrid drive mode, a lower boundary of a maximum economic power interval of the internal combustion engine is a power source that operates the power take-off;
in the driving and power generation mode, the upper boundary of the maximum economic power interval of the internal combustion engine is a power source for driving the power takeoff to work.
12. The range extender control method of claim 6, wherein the engine-driven mode comprises:
the vehicle control unit sends a control command to the internal combustion engine controller;
the internal combustion engine controller controls a low-voltage battery to supply power to a starting motor, the starting motor drives the internal combustion engine to start, and the vehicle control unit controls the clutch to be engaged and simultaneously drives the power takeoff to work.
13. The range extender control method of claim 12, wherein the starter motor is further brought into a power generation state at any time in response to a power generation instruction of the vehicle control unit after starting the internal combustion engine.
14. The range extender control method of claim 3, wherein if the vehicle control unit does not have the power request, the method further comprises:
the vehicle control unit sends a shutdown command and a power-off command to the battery controller, the motor controller and the internal combustion engine controller;
the battery controller, the motor controller, and the internal combustion engine controller stop respective current operations and self-test and power down in response to the stop command and the power down command.
15. A range extender control system, comprising: the system comprises an internal combustion engine, a high-voltage battery and a driving motor;
the internal combustion engine is connected with a coaxial rotor of the driving motor, and a power takeoff is integrated at the rear end of the driving motor;
the driving motor is controlled by a motor controller, the motor controller is connected with a battery controller, and the battery controller is used for controlling the high-voltage battery;
the battery controller is further connected with a vehicle control unit, the vehicle control unit is connected with an internal combustion engine controller, and the internal combustion engine controller is used for controlling the internal combustion engine.
16. The range extender control system of claim 15, further comprising: starting a motor and a low-voltage battery;
the starting motor is arranged on a front-end wheel train of the internal combustion engine, is respectively connected with the internal combustion engine controller and the low-voltage battery, and has starting and power generation functions.
17. The range extender control system of claim 15 or 16, further comprising: a clutch and power distribution unit;
the clutch is connected between the internal combustion engine and the driving motor;
the power distribution unit is connected between the motor controller and the battery controller.
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| CN202210406329.2A CN114690746A (en) | 2022-04-18 | 2022-04-18 | Range extender control method and range extender control system |
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| CN202210406329.2A CN114690746A (en) | 2022-04-18 | 2022-04-18 | Range extender control method and range extender control system |
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Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Applicant after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Applicant after: Zhejiang Geely new energy Commercial Vehicle Development Co.,Ltd. Applicant after: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Applicant before: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLE GROUP Co.,Ltd. Applicant before: Zhejiang Geely new energy Commercial Vehicle Development Co.,Ltd. Applicant before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. |
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Effective date of registration: 20240228 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region after: China Applicant after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Applicant after: Tianjin Alcohol Hydrogen Research and Development Co.,Ltd. Address before: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Applicant before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region before: China Applicant before: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Applicant before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. |