CN111504652A - Bench test method, device, equipment and storage medium of range extender - Google Patents
Bench test method, device, equipment and storage medium of range extender Download PDFInfo
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- CN111504652A CN111504652A CN202010338926.7A CN202010338926A CN111504652A CN 111504652 A CN111504652 A CN 111504652A CN 202010338926 A CN202010338926 A CN 202010338926A CN 111504652 A CN111504652 A CN 111504652A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
Abstract
The embodiment of the invention discloses a bench test method, a device, equipment and a storage medium of a range extender, wherein the method comprises the following steps: acquiring target working condition point information; controlling the engine to operate at a target torque through the electronic control unit, and controlling the generator to operate at a target rotating speed through the generator controller; acquiring a real torque sent by an electronic control unit and a real rotating speed sent by a generator controller; an error value is determined. According to the technical scheme of the embodiment of the invention, the engine and the generator are controlled to operate according to the target torque and the target rotating speed through the electronic control unit and the generator controller respectively, and the error value is determined after the fed-back real torque and real rotating speed are obtained, so that the operation parameters of the engine and the generator are effectively monitored, the comprehensiveness and the accuracy of the bench test of the range extender are ensured, and meanwhile, complete pilot data are provided for the bench test of the whole vehicle.
Description
Technical Field
The embodiment of the invention relates to the field of new energy automobiles, in particular to a bench test method, a bench test device, bench test equipment and a storage medium for a range extender.
Background
With the continuous progress of science and technology, new energy automobiles are rapidly developed, and as an important branch of new energy automobiles, the extended range type electric automobiles gradually come into the sight of people.
The range-extended electric automobile provides electric energy except for a power battery for the electric automobile through the range extender, the range extender comprises an engine and a generator (ISG motor), and when the power battery is insufficient in electric quantity, energy sources such as gasoline and the like are used for generating the electric energy, so that the driving mileage of the electric automobile is increased; in the prior art, bench tests for range extenders are usually carried out by referring to traditional engine bench tests, but such test modes can only meet the requirements of engines, and the bench tests cannot be effectively and comprehensively carried out for the range extenders.
Disclosure of Invention
The embodiment of the invention provides a bench test method, a device, equipment and a storage medium of a range extender, so as to effectively monitor the operating parameters of an engine and a generator.
In a first aspect, an embodiment of the present invention provides a bench test method for a range extender, including:
acquiring target working condition point information; the target operating point information comprises a target torque and a target rotating speed;
sending a first request message to the electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending a second request message to the generator controller to enable the generator controller to control the generator to operate at the target rotating speed;
acquiring a first response message sent by an electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by a generator controller, analyzing and acquiring the real rotating speed of the generator;
and carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed, and determining an error numerical value.
In a second aspect, an embodiment of the present invention provides a bench test apparatus for a range extender, including:
the target operating point information acquisition module is used for acquiring target operating point information; the target operating point information comprises a target torque and a target rotating speed;
the request message sending module is used for sending a first request message to the electronic control unit so that the electronic control unit controls the engine to operate at a target torque, and sending a second request message to the generator controller so that the generator controller controls the generator to operate at a target rotating speed;
the response message acquisition module is used for acquiring a first response message sent by the electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by the generator controller, and analyzing and acquiring the real rotating speed of the generator;
and the error analysis execution module is used for carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed and determining an error numerical value.
In a third aspect, an embodiment of the present invention further provides an apparatus, where the apparatus includes:
one or more processors;
storage means for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors implement the bench test method for the range extender described in any embodiment of the invention.
In a fourth aspect, the embodiments of the present invention further provide a storage medium containing computer executable instructions, which when executed by a computer processor, implement the bench test method of the range extender according to any embodiment of the present invention.
According to the technical scheme of the embodiment of the invention, the engine and the generator are controlled to operate according to the target torque and the target rotating speed through the electronic control unit and the generator controller respectively, and the error value is determined after the fed-back real torque and real rotating speed are obtained, so that the operation parameters of the engine and the generator are effectively monitored, the comprehensiveness and the accuracy of the bench test of the range extender are ensured, and meanwhile, complete pilot data are provided for the bench test of the whole vehicle.
Drawings
Fig. 1 is a flowchart of a bench test method for a range extender according to an embodiment of the present invention;
fig. 2 is a block diagram of a bench test apparatus of a range extender according to a second embodiment of the present invention;
fig. 3 is a block diagram of a device according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of a bench test method for a range extender according to an embodiment of the present invention, where the embodiment is suitable for monitoring operating condition information of an engine and a generator of the range extender, and the method may be executed by a bench test device for a range extender according to an embodiment of the present invention, where the device may be implemented by software and/or hardware and integrated in a terminal device, and the method specifically includes the following steps:
s110, acquiring target working condition point information; the target operating point information includes a target torque and a target rotation speed.
In the embodiment of the invention, the target operating point information comprises torque information of the engine and rotating speed information of the generator, wherein the torque is torque output by a crankshaft end of the engine and is in a direct proportional relation with the acceleration of the vehicle, and the rotating speed is the number of turns of the crankshaft in unit time and is in a direct proportional relation with the speed of the vehicle.
The target operating point information can be acquired from a database and can also be configured and generated according to experience values of testers, namely the target operating point information can be preset operating point information; particularly, the target operating point information can be obtained in a random generation mode so as to test the working performance of the range extender at an unconventional operating point, and specifically, the target torque and the target rotating speed can be randomly generated according to a preset torque threshold and a preset rotating speed threshold; randomly generating numerical value combinations of torque and rotating speed within a preset torque threshold range and a preset rotating speed threshold range, wherein the preset torque threshold comprises a preset minimum torque threshold and a preset maximum torque threshold, and the preset rotating speed threshold comprises a preset maximum rotating speed threshold and a preset minimum rotating speed threshold.
Particularly, when the bench test is carried out, the generator is connected with a battery simulator, and the battery simulator is used for consuming electric energy generated by the generator; the battery simulator may simulate an output State of a real battery and charge-discharge characteristics of the battery, and may also modify parameters of a State of charge (SOC), a discharge depth, an open-circuit voltage, an internal resistance, and the like of the battery as needed to obtain data under different battery parameters.
And S120, sending a first request message to the electronic control unit so that the electronic control unit controls the engine to operate at the target torque, and sending a second request message to the generator controller so that the generator controller controls the generator to operate at the target rotating speed.
An Electronic Control Unit (ECU) that is a Control center of the engine and is used to Control the operation of the engine and acquire signals from various sensors (e.g., pressure sensor and temperature sensor) in the engine; a Generator Control Unit (GCU) is a Control center of a Generator, and is used for controlling the operation of the Generator and acquiring signals of various types of sensors (such as temperature sensors) in the Generator; and respectively sending the torque information and the rotating speed information to the ECU and the GCU through data messages, and respectively controlling the engine and the generator to operate at target values through the ECU and the GCU.
Optionally, in an embodiment of the present invention, before sending the first request message to the electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending the second request message to the generator controller to enable the generator controller to control the generator to operate at the target rotation speed, the method further includes: obtaining static parameters of the range extender; the static parameters comprise the water temperature of an engine, the temperature of a generator controller, the temperature of an air inlet of the engine, the oil temperature of the engine, the high-voltage of the generator controller and/or the low-voltage of the generator controller. Before starting the test of the working condition point information, various parameter values related to the engine and the generator are respectively obtained through the ECU and the GCU so as to ensure the safety of the working condition point information test; in particular, the high voltage of the engine controller is the voltage of the power supply of the battery simulator connected to the engine, typically 340V, and the low voltage of the engine controller is the voltage of the 12V power supply.
Optionally, in the embodiment of the present invention, after obtaining the static parameter of the range extender, the method further includes: and if the static parameter is greater than or equal to the first risk threshold and less than the second risk threshold, sending a risk alarm prompt, and if the static parameter is greater than or equal to the second risk threshold, sending a power-off instruction to the electronic control unit and/or the generator controller so as to enable the electronic control unit and/or the generator controller to execute power-off operation. The first risk threshold indicates that the parameter value is at risk but within an acceptable range and therefore only an alarm needs to be issued, and the second risk threshold indicates that the parameter value has severely affected the test and needs to be shut down immediately.
S130, acquiring a first response message sent by the electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by the generator controller, and analyzing and acquiring the real rotating speed of the generator.
The first response message and the second response message are response information respectively aiming at the first request message and the second request message, and the actual torque value of the engine and the actual rotating speed value of the generator are respectively obtained through the ECU and the GCU; in particular, the duration of the response message may be set as needed, for example, in order to test the durability of the range extender, the response message information may be continuously acquired for a longer time (for example, 600 hours) after the target operating point information is sent to the range extender.
Optionally, in an embodiment of the present invention, after sending a first request message to the electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending a second request message to the generator controller to enable the generator controller to control the generator to operate at the target rotation speed, the method further includes: acquiring dynamic parameters of the range extender; the dynamic parameters comprise the temperature of an engine exhaust port, the pressure of the engine exhaust port, the oil pressure of an engine, the high-voltage of a generator controller, the high-voltage current of the generator controller and/or the low-voltage of the generator controller. The response message comprises the real torque and the real rotating speed of the range extender, and also comprises dynamic parameters of the range extender so as to ensure the safety in the process of testing the operating point information; in particular, for monitoring the dynamic parameters, different risk thresholds can be set, and when the dynamic parameter value exceeds the risk threshold, a power-off command is sent to the electronic control unit and/or the generator controller, or a risk alarm prompt is sent.
And S140, carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed, and determining an error numerical value.
The torque error can be determined according to the target torque and the real torque, the rotating speed error can be determined according to the target rotating speed and the real rotating speed, the error proportion is determined according to the obtained error numerical value, and if the error proportion exceeds a preset error threshold value, an alarm prompt is sent out and recording is carried out. Specifically, the error analysis is performed according to the target torque, the target rotating speed, the real torque and the real rotating speed, and an error value is determined, including: drawing a target operation curve through an oscilloscope according to the target torque and the target rotating speed, and drawing a real operation curve through the oscilloscope according to the real torque and the real rotating speed; and linearly comparing the target operation curve with the real operation curve to determine an error numerical value. By curve drawing of the oscilloscope, not only can the error value of each time point be visually displayed, but also the relationship between the error change and the time line can be determined according to the drawn curve, for example, the error value is stable (i.e. the error value is less than or equal to the preset error threshold) in the initial operation stage (e.g. the operation time is within 100 hours), but as the operation time of the range extender is longer (e.g. after the operation time exceeds 300 hours), the error value is gradually increased and is greater than the preset error threshold, which indicates that the durability of the range extender has a problem, and a detailed data report is generated for a tester.
Optionally, in the embodiment of the present invention, the method further includes: sending a third request message to the electronic control unit to enable the electronic control unit to control the engine to execute the oil injection operation, and analyzing and acquiring the oil injection state according to a third response message sent by the electronic control unit; and/or sending a fourth request message to a water supply switch of the engine, so that the water supply switch of the engine executes water supply operation according to the first preset quantity, and the water pressure of the engine is monitored in real time through the first pressure sensor; and/or sending a fifth request message to a water supply switch of the generator so that the water supply switch of the generator executes water supply operation according to the second preset quantity, and monitoring the water pressure of the generator in real time through a second pressure sensor. The ECU can detect the residual oil quantity of the engine after oil injection through the liquid level detection sensor, feed back oil quantity information, and determine the response condition of the engine to an oil injection instruction after analysis.
According to the technical scheme of the embodiment of the invention, the engine and the generator are controlled to operate according to the target torque and the target rotating speed through the electronic control unit and the generator controller respectively, and the error value is determined after the fed-back real torque and real rotating speed are obtained, so that the operation parameters of the engine and the generator are effectively monitored, the comprehensiveness and the accuracy of the bench test of the range extender are ensured, and meanwhile, complete pilot data are provided for the bench test of the whole vehicle.
Example two
Fig. 2 is a block diagram of a bench test apparatus of a range extender according to a second embodiment of the present invention, which specifically includes: a target operating point information obtaining module 210, a request message sending module 220, a response message obtaining module 230, and an error analysis executing module 240.
A target operating point information obtaining module 210, configured to obtain target operating point information; the target operating point information comprises a target torque and a target rotating speed;
a request message sending module 220, configured to send a first request message to the electronic control unit, so that the electronic control unit controls the engine to operate at a target torque, and send a second request message to the generator controller, so that the generator controller controls the generator to operate at a target rotation speed;
a response message obtaining module 230, configured to obtain a first response message sent by the electronic control unit, analyze the first response message to obtain a real torque of the engine, obtain a second response message sent by the generator controller, and analyze the second response message to obtain a real rotation speed of the generator;
and the error analysis execution module 240 is configured to perform error analysis according to the target torque, the target rotation speed, the real torque and the real rotation speed, and determine an error value.
According to the technical scheme of the embodiment of the invention, the engine and the generator are controlled to operate according to the target torque and the target rotating speed through the electronic control unit and the generator controller respectively, and the error value is determined after the fed-back real torque and real rotating speed are obtained, so that the operation parameters of the engine and the generator are effectively monitored, the comprehensiveness and the accuracy of the bench test of the range extender are ensured, and meanwhile, complete pilot data are provided for the bench test of the whole vehicle.
Optionally, on the basis of the above technical solution, the bench testing apparatus of the range extender further includes:
the static parameter acquisition module is used for acquiring the static parameters of the range extender before sending a first request message to the electronic control unit so that the electronic control unit controls the engine to operate at a target torque and sending a second request message to the generator controller so that the generator controller controls the generator to operate at a target rotating speed; the static parameters comprise the water temperature of an engine, the temperature of a generator controller, the temperature of an air inlet of the engine, the oil temperature of the engine, the high-voltage of the generator controller and/or the low-voltage of the generator controller.
Optionally, on the basis of the above technical solution, the bench testing apparatus of the range extender further includes:
and the risk judgment module is used for sending a risk alarm prompt if the static parameter is greater than or equal to the first risk threshold and smaller than the second risk threshold, and sending a power-off instruction to the electronic control unit and/or the generator controller if the static parameter is greater than or equal to the second risk threshold so as to enable the electronic control unit and/or the generator controller to execute power-off operation.
Optionally, on the basis of the foregoing technical solution, the target operating point information obtaining module 210 is specifically configured to randomly generate a target torque and a target rotation speed according to a preset torque threshold and a preset rotation speed threshold.
Optionally, on the basis of the foregoing technical solution, the error analysis execution module 240 specifically includes:
the curve acquisition module is used for drawing a target operation curve through the oscilloscope according to the target torque and the target rotating speed and drawing a real operation curve through the oscilloscope according to the real torque and the real rotating speed;
and the error value determining module is used for linearly comparing the target operation curve with the real operation curve and determining an error value.
Optionally, on the basis of the above technical solution, the bench testing apparatus of the range extender further includes:
the static parameter acquisition module is used for transmitting a first request message to the electronic control unit so that the electronic control unit controls the engine to operate at a target torque, and transmitting a second request message to the generator controller so that the generator controller controls the generator to operate at a target rotating speed, and then acquiring dynamic parameters of the range extender; the dynamic parameters comprise the temperature of an engine exhaust port, the pressure of the engine exhaust port, the oil pressure of an engine, the high-voltage of a generator controller, the high-voltage current of the generator controller and/or the low-voltage of the generator controller.
Optionally, on the basis of the above technical solution, the bench testing apparatus of the range extender further includes:
the fuel injection state acquisition module is used for sending a third request message to the electronic control unit so as to enable the electronic control unit to control the engine to execute fuel injection operation, and analyzing and acquiring the fuel injection state according to a third response message sent by the electronic control unit;
and/or the engine water pressure state acquisition module is used for sending a fourth request message to a water supply switch of the engine so as to enable the water supply switch of the engine to execute water supply operation according to the first preset quantity and monitor the water pressure of the engine in real time through the first pressure sensor;
and/or the generator water pressure state acquisition module is used for sending a fifth request message to a water supply switch of the generator so as to enable the water supply switch of the generator to execute water supply operation according to a second preset quantity, and the water pressure of the generator is monitored in real time through a second pressure sensor.
The device can execute the bench test method of the range extender provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, reference may be made to the method provided in any embodiment of the present invention.
EXAMPLE III
Fig. 3 is a schematic structural diagram of an apparatus according to a third embodiment of the present invention. Fig. 3 illustrates a block diagram of an exemplary device 12 suitable for use in implementing embodiments of the present invention. The device 12 shown in fig. 3 is only an example and should not bring any limitations to the functionality and scope of use of the embodiments of the present invention.
As shown in FIG. 3, device 12 is in the form of a general purpose computing device. The components of device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 3, and commonly referred to as a "hard drive"). Although not shown in FIG. 3, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
The processing unit 16 executes programs stored in the system memory 28 to perform various functional applications and data processing, such as implementing a bench test method for a range extender provided by any of the embodiments of the present invention. Namely: acquiring target working condition point information; the target operating point information comprises a target torque and a target rotating speed; sending a first request message to the electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending a second request message to the generator controller to enable the generator controller to control the generator to operate at the target rotating speed; acquiring a first response message sent by an electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by a generator controller, analyzing and acquiring the real rotating speed of the generator; and carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed, and determining an error numerical value.
Example four
The fourth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a bench test method for a range extender according to any embodiment of the present invention; the method comprises the following steps:
acquiring target working condition point information; the target operating point information comprises a target torque and a target rotating speed;
sending a first request message to the electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending a second request message to the generator controller to enable the generator controller to control the generator to operate at the target rotating speed;
acquiring a first response message sent by an electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by a generator controller, analyzing and acquiring the real rotating speed of the generator;
and carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed, and determining an error numerical value.
Computer storage media for embodiments of the invention may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including AN object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A bench test method of a range extender is characterized by comprising the following steps:
acquiring target working condition point information; the target operating point information comprises a target torque and a target rotating speed;
sending a first request message to an electronic control unit to enable the electronic control unit to control the engine to operate at the target torque, and sending a second request message to a generator controller to enable the generator controller to control the generator to operate at the target rotating speed;
acquiring a first response message sent by the electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by the generator controller, analyzing and acquiring the real rotating speed of the generator;
and carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed, and determining an error numerical value.
2. The method of claim 1, further comprising, prior to sending a first request message to an electronic control unit to cause the electronic control unit to control an engine to operate at the target torque and sending a second request message to a generator controller to cause the generator controller to control a generator to operate at the target speed:
acquiring static parameters of the range extender; wherein the static parameters include water temperature of the engine, temperature of the generator controller, temperature of an air inlet of the engine, oil temperature of the engine, high voltage of the generator controller and/or low voltage of the generator controller.
3. The method of claim 2, after obtaining the static parameters of the range extender, further comprising:
and if the static parameter is greater than or equal to a first risk threshold and less than a second risk threshold, sending a risk alarm prompt, and if the static parameter is greater than or equal to the second risk threshold, sending a power-off instruction to the electronic control unit and/or the generator controller so as to enable the electronic control unit and/or the generator controller to execute power-off operation.
4. The method of claim 1, wherein the obtaining target operating point information comprises:
and randomly generating a target torque and a target rotating speed according to a preset torque threshold value and a preset rotating speed threshold value.
5. The method of claim 1, wherein said performing an error analysis based on said target torque, said target rotational speed, said true torque, and said true rotational speed, and determining an error value comprises:
drawing a target operation curve through an oscilloscope according to the target torque and the target rotating speed, and drawing a real operation curve through the oscilloscope according to the real torque and the real rotating speed;
and linearly comparing the target operation curve with the real operation curve to determine an error numerical value.
6. The method of claim 1, further comprising, after sending a first request message to an electronic control unit to cause the electronic control unit to control an engine to operate at the target torque and sending a second request message to a generator controller to cause the generator controller to control a generator to operate at the target speed:
acquiring dynamic parameters of the range extender; wherein the dynamic parameters include a temperature of an engine exhaust, a pressure of the engine exhaust, an oil pressure of the engine, a high voltage of the generator controller, and/or a low voltage of the generator controller.
7. The method of claim 1, further comprising:
sending a third request message to the electronic control unit to enable the electronic control unit to control the engine to execute oil injection operation, and analyzing and acquiring an oil injection state according to a third response message sent by the electronic control unit;
and/or sending a fourth request message to a water supply switch of the engine, so that the water supply switch of the engine executes water supply operation according to a first preset quantity, and the water pressure of the engine is monitored in real time through a first pressure sensor;
and/or sending a fifth request message to a water supply switch of the generator so that the water supply switch of the generator executes water supply operation according to a second preset quantity, and monitoring the water pressure of the generator in real time through a second pressure sensor.
8. A bench test device of a range extender, comprising:
the target operating point information acquisition module is used for acquiring target operating point information; the target operating point information comprises a target torque and a target rotating speed;
the request message sending module is used for sending a first request message to an electronic control unit so that the electronic control unit controls the engine to operate at the target torque, and sending a second request message to a generator controller so that the generator controller controls the generator to operate at the target rotating speed;
the response message acquisition module is used for acquiring a first response message sent by the electronic control unit, analyzing and acquiring the real torque of the engine, acquiring a second response message sent by the generator controller, and analyzing and acquiring the real rotating speed of the generator;
and the error analysis execution module is used for carrying out error analysis according to the target torque, the target rotating speed, the real torque and the real rotating speed and determining an error numerical value.
9. An apparatus, characterized in that the apparatus comprises:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a bench test method for a range extender of any of claims 1-7.
10. A storage medium containing computer-executable instructions for performing the bench testing method of the range extender of any of claims 1-7 when executed by a computer processor.
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| CN202010338926.7A CN111504652A (en) | 2020-04-26 | 2020-04-26 | Bench test method, device, equipment and storage medium of range extender |
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| CN202010338926.7A CN111504652A (en) | 2020-04-26 | 2020-04-26 | Bench test method, device, equipment and storage medium of range extender |
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