CN111855227B - 48V hybrid power system bench test method, device and storage medium - Google Patents
48V hybrid power system bench test method, device and storage medium Download PDFInfo
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- CN111855227B CN111855227B CN202010578648.2A CN202010578648A CN111855227B CN 111855227 B CN111855227 B CN 111855227B CN 202010578648 A CN202010578648 A CN 202010578648A CN 111855227 B CN111855227 B CN 111855227B
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Abstract
The invention discloses a 48V hybrid power system bench test method, a device and a storage medium, wherein the method comprises the steps of respectively initializing each part and pre-charging a motor; the BSG motor drives the engine to operate; generating corresponding operation data according to the operation information of the dynamometer; controlling the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode, and switching a power supply device to a corresponding working state according to different modes; when the rack control unit receives an air conditioner starting signal, the air conditioner loading device is controlled to be added to operate, and corresponding working condition data are generated according to the received operation information of the dynamometer after the air conditioner loading device is added to operate; and receiving the operation data and the working condition data, and fitting corresponding performance curves according to the operation data and the working condition data respectively. The 48V hybrid power system rack test method, the device and the storage medium provided by the embodiment of the invention have the advantages of simple structure, capability of obtaining more accurate performance test data and higher test reliability.
Description
Technical Field
The invention relates to the technical field of automobile testing, in particular to a method and a device for testing a 48V hybrid power system bench and a storage medium.
Background
Under the strict oil consumption, a 48V hybrid power system is highly advocated by vehicle enterprises and component manufacturers in the last two years as a relatively practical and feasible energy-saving and emission-reducing mode. 48V is generally most common in the P0 position, and the "P0-P4" are short for different layout positions of the hybrid vehicle type motor relative to the engine and the gearbox, wherein the "P" represents the motor, and the "0-4" represents different positions of the motor. For 48V and P0 hybrid system automobiles, relevant tests are required to be carried out before delivery to ensure the service performance of the whole automobile.
At present, a 48V and P0 hybrid system is generally tested on a whole vehicle, and a test process is very difficult due to small cabin space and a plurality of test equipment such as sensors; in addition, the actual operation condition of the automobile with the 48V and P0 hybrid system is very complex, and the bench test system in the prior art is not actually attached, so that the actual operation condition of the 48V and P0 hybrid system cannot be accurately restored, and therefore the test accuracy is low.
Disclosure of Invention
The embodiment of the invention provides a 48V hybrid power system bench test method, a device and a storage medium, which are used for solving the technical problems of poor test effect caused by lower test accuracy and more complicated steps of the conventional bench test and improving the comprehensive test effect by a simple and accurate test method.
In order to solve the above technical problem, an embodiment of the present invention provides a 48V hybrid power system bench test method, which includes:
respectively initializing a rack control unit, a control device, a power supply device, a dynamometer, a BSG motor, an air conditioner loading device and an engine, and pre-charging the motor;
according to the control instruction received by the control device, the BSG motor drives the engine to operate;
generating corresponding operation data according to the operation information of the dynamometer;
the control device correspondingly controls the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode according to the operation data, and the power supply device is switched to a corresponding working state according to the power-assisted mode, the energy recovery mode or the power generation mode;
when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to run, and corresponding working condition data are generated according to the received running information of the dynamometer after the air conditioner loading device runs;
and receiving the operation data and the working condition data, and fitting corresponding performance curves according to the operation data and the working condition data respectively.
Preferably, the operating data includes rotational speed data and torque data.
As a preferred scheme, the power supply device is a bidirectional power supply; the working state comprises a power supply state and an electric power storage state.
Preferably, the operating condition data includes power generation data and power consumption data.
The invention provides a 48V hybrid power system bench test device, wherein the 48V hybrid power system comprises a dynamometer, a BSG motor, an air conditioner loading device and an engine, and the test device comprises a power supply device, a control device and a bench control unit;
the control device is respectively connected with the power supply device, the rack control unit and the BSG motor;
the dynamometer is connected with the rack control unit through a first port and the engine through a second port, and the dynamometer is used for monitoring the running state of the engine in real time to generate corresponding running data and working condition data;
a first port of the BSG motor is connected with the engine, a second port of the BSG motor is connected with the power supply device, a third port of the BSG motor is connected with the control device, and the BSG motor is used for controlling the engine in real time according to an instruction of the control device;
the air conditioner loading device is connected with the engine.
Preferably, the control device is configured to;
initializing the power supply device, the dynamometer, the BSG motor, the air conditioner loading device and the engine according to an initialization command of the rack control unit, and performing motor pre-charging;
receiving a control instruction sent by the rack control unit, and controlling the BSG motor to drive the engine to operate;
generating corresponding operation data according to the operation information of the dynamometer;
correspondingly controlling the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode according to the operation data, so that the bidirectional power supply can be switched to a corresponding working state according to the power-assisted mode, the energy recovery mode or the power generation mode;
when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to run, and corresponding working condition data are generated according to the received running information of the dynamometer after the air conditioner loading device runs;
and receiving the operation data and the working condition data, fitting corresponding performance curves according to the operation data and the working condition data respectively, and sending the fitted performance curves to the rack control unit.
Preferably, the air conditioner loading device comprises a relay, and the relay is used for controlling the adding operation state of the air conditioner loading device.
Preferably, the BSG motor is connected to the engine through a belt.
Yet another embodiment of the present invention provides a computer readable storage medium comprising a stored computer program, wherein the computer program when executed controls an apparatus in which the computer readable storage medium is located to perform the 48V hybrid system bench test device method described above.
Compared with the prior art, the embodiment of the invention has the advantages that the test on the whole vehicle is avoided, the test cost is greatly reduced, and meanwhile, the whole test flow can be simplified by constructing a simple and reasonable test device and matching with a specific test method with strong operability; in addition, an air conditioner loading device is introduced and matched with each device for use, the actual running working condition of the 48V hybrid power system automobile is reasonably restored, more accurate performance test data can be obtained, and the test reliability is higher.
Drawings
FIG. 1 is a schematic flow chart of a 48V hybrid powertrain bench test method in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a 48V hybrid powertrain bench test apparatus in an embodiment of the present invention;
wherein, 1, an engine; 2. a dynamometer; 3. a control device; 4. a power supply device; 5. an air conditioner loading device; 6. a BSG motor; 7. a gantry control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, it is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as those skilled in the art will recognize the specific meaning of the terms used in the present application in a particular context.
An embodiment of the present invention provides a 48V hybrid power system bench test method, and specifically, please refer to fig. 1, where fig. 1 is a schematic flow chart of the 48V hybrid power system bench test method provided in the embodiment of the present invention, and specifically includes the following steps:
s101, respectively initializing a rack control unit, a control device, a power supply device, a dynamometer, a BSG motor, an air conditioner loading device and an engine, and pre-charging the motor;
s102, driving the engine to operate by the BSG motor according to a control command received by the control device;
s103, generating corresponding operation data according to the operation information of the dynamometer;
s104, the control device correspondingly controls the BSG motor to enter a corresponding power assisting mode, an energy recovery mode or a power generation mode according to the operation data, so that the power supply device can be switched to a corresponding working state according to the power assisting mode, the energy recovery mode or the power generation mode;
s105, when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to operate, and corresponding working condition data are generated according to received operation information of the dynamometer after the air conditioner loading device operates;
and S106, receiving the operation data and the working condition data, and fitting corresponding performance curves according to the operation data and the working condition data respectively.
In the embodiment, the dynamometer is an electric dynamometer, which measures torques output by various power mechanical shafts by using a motor and determines the working performance of the engine by combining rotation speed information; preferably, in this embodiment, the rack control unit is a rack control computer (or other intelligent devices) for receiving a control command of a tester and sending a corresponding control signal to the control device, so that each component of the entire test system executes a test procedure according to preset method steps; the BSG motor is positioned at the front end (namely the P0 position) of the engine and is connected with the engine in a belt transmission mode, and mechanical vibration cannot be generated in the power transmission process of the flexible connection of the belt. The BSG motor can also regulate and control the rotating speed of the engine, so that the smoothness of the vehicle in the aspects of starting and stopping, idling, gear shifting, accelerating and the like is greatly improved; and a related air conditioner loading system is arranged in the air conditioner loading device and used for simulating actual operation requirements and better restoring the use working condition of the automobile so as to improve the accuracy of subsequent data.
Preferably, in the above embodiment, the operation data includes rotation speed data and torque data.
Preferably, in the above embodiment, the operating condition data includes power generation amount data and power consumption amount data. The control device sends the received information data such as torque, rotating speed, generating capacity, power consumption and the like to the rack control unit, so that the rack control unit processes the received various data, and the processing comprises generating various performance data tables and fitting the related data to form corresponding performance curves.
Preferably, in the above embodiment, the power supply device is a bidirectional power supply, and has two stable independent outputs, one of which is connected to the control device, and the other of which is connected to the BSG motor; the advantage of two way output is that can make the BSG motor according to real-time mode of operation (say power assist mode, energy recuperation mode or power generation mode), guarantee that bidirectional power supply switches in power supply state and power storage state according to actual demand.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a 48V hybrid system bench test device provided in an embodiment of the present invention, wherein the 48V hybrid system includes a dynamometer 2, a BSG motor 6, an air conditioner loading device 5 and an engine 1, and the test device includes a power supply device 4, a control device 3 and a bench control unit 7.
The control device 3 is respectively connected with the power supply device 4, the stand control unit 7 and the BSG motor 6; the dynamometer 2 is characterized in that a first port of the dynamometer 2 is connected with the rack control unit 7, a second port of the dynamometer 2 is connected with the engine 1, and the dynamometer 2 is used for monitoring the running state of the engine 1 in real time so as to generate corresponding running data and working condition data; a first port of the BSG motor 6 is connected to the engine 1, a second port of the BSG motor 6 is connected to the power supply device 4, a third port of the BSG motor 6 is connected to the control device 3, and the BSG motor 6 is configured to control the engine 1 in real time according to an instruction from the control device 3; the air conditioner loading device 5 is connected with the engine 1. In summary, the whole testing device is simple in structure, convenient to wire, capable of stably meeting corresponding testing requirements according to a preset testing method, simple, effective and high in testing reliability.
Preferably, the control device in the present embodiment is configured to correspond to the test method described above, specifically;
initializing the power supply device, the dynamometer, the BSG motor, the air conditioner loading device and the engine according to an initialization instruction of the rack control unit, and performing motor pre-charging; receiving a control instruction sent by the rack control unit, and controlling the BSG motor to drive the engine to operate; generating corresponding operation data according to the operation information of the dynamometer; correspondingly controlling the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode according to the operation data, so that the bidirectional power supply can be switched to a corresponding working state according to the power-assisted mode, the energy recovery mode or the power generation mode; when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to operate, and corresponding working condition data are generated according to received operation information of the dynamometer after the air conditioner loading device operates; and receiving the operation data and the working condition data, fitting corresponding performance curves according to the operation data and the working condition data respectively, and sending the fitted performance curves to the rack control unit.
As one preferable scheme, in the 48V hybrid power system bench test device in the embodiment of the invention, a relevant relay is arranged in the air conditioner loading device, and whether the air conditioner loading device is added into the whole test system is realized by opening and closing the relay, so that the actual working condition requirement is scientifically simulated.
As one preferable scheme, in the 48V hybrid power system bench test device in the embodiment of the present invention, the BSG motor is connected to the engine through a belt, and the engine is better controlled through a belt transmission manner, so as to ensure that the operating state of the engine is in accordance with the preset state.
Yet another embodiment of the present invention provides a computer readable storage medium comprising a stored computer program, wherein the computer program, when executed, controls an apparatus at which the computer readable storage medium is located to perform the 48V hybrid system bench test device method as described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U.S. disk, removable hard disk, magnetic diskette, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signal, telecommunications signal, and software distribution medium, etc.
The 48V hybrid power system rack test method, the device and the storage medium provided by the embodiment of the invention avoid the test on the whole vehicle, greatly reduce the test cost, and simplify the whole test process by constructing a simple and reasonable test device and matching with a specific test method with strong operability; in addition, an air conditioner loading device is introduced and matched with each device for use, the actual running working condition of the 48V hybrid power system automobile is reasonably restored, more accurate performance test data can be obtained, and the test reliability is higher.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (3)
1. A48V hybrid power system bench test method is characterized by comprising the following steps:
respectively initializing a rack control unit, a control device, a power supply device, a dynamometer, a BSG motor, an air conditioner loading device and an engine, and pre-charging the motor;
according to the control instruction received by the control device, the BSG motor is positioned at the front end of the engine and drives the engine to operate in a belt transmission mode;
generating corresponding operation data according to the operation information of the dynamometer, wherein the operation data comprises rotating speed data and torque data;
the control device correspondingly controls the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode according to the operation data, and the power supply device is switched to a corresponding working state according to the power-assisted mode, the energy recovery mode or the power generation mode; the power supply device is a bidirectional power supply and has two independent outputs, one output is connected with the control device, and the other output is connected with the BSG motor; the working state comprises a power supply state and an electric power storage state;
when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to operate, and corresponding working condition data are generated according to received operation information of the dynamometer after the air conditioner loading device operates, wherein the working condition data comprise generated energy data and power consumption data;
and receiving the operation data and the working condition data, and fitting corresponding performance curves according to the operation data and the working condition data respectively.
2. A48V hybrid power system bench testing device comprises a dynamometer, a BSG motor, an air conditioner loading device and an engine, and is characterized in that the testing device comprises a power supply device, a control device and a bench control unit;
the power supply device is a bidirectional power supply;
the control device is respectively connected with the power supply device, the rack control unit and the BSG motor;
the dynamometer is used for monitoring the running state of the engine in real time to generate corresponding running data and working condition data;
a first port of the BSG motor is connected with the engine, a second port of the BSG motor is connected with the power supply device, a third port of the BSG motor is connected with the control device, and the BSG motor is used for controlling the engine in real time according to an instruction of the control device;
the air conditioner loading device is connected with the engine;
the control device configured to:
initializing the power supply device, the dynamometer, the BSG motor, the air conditioner loading device and the engine according to an initialization command of the rack control unit, and performing motor pre-charging;
receiving a control instruction sent by the bench control unit, and controlling the BSG motor to drive the engine to operate;
generating corresponding operation data according to the operation information of the dynamometer;
correspondingly controlling the BSG motor to enter a corresponding power-assisted mode, an energy recovery mode or a power generation mode according to the operation data, so that the bidirectional power supply can be switched to a corresponding working state according to the power-assisted mode, the energy recovery mode or the power generation mode;
when the rack control unit receives an air conditioner starting signal, the control device controls the air conditioner loading device to run, and corresponding working condition data are generated according to the received running information of the dynamometer after the air conditioner loading device runs;
receiving the operation data and the working condition data, fitting corresponding performance curves according to the operation data and the working condition data respectively, and sending the fitted performance curves to the rack control unit;
the air conditioner loading device comprises a relay, and the relay is used for controlling the adding operation state of the air conditioner loading device;
the BSG motor is connected with the engine through a belt.
3. A computer readable storage medium comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer readable storage medium is located to perform the 48V hybrid system bench test method of claim 1.
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| CN100344953C (en) * | 2002-12-06 | 2007-10-24 | 东风汽车公司 | Multiple energy source bench arrangement scheme for mixed power electric automobile |
| CN103809120B (en) * | 2014-03-03 | 2016-11-02 | 广东机电职业技术学院 | A kind of test system and method for Weak mixed power automobile power system electric component |
| CN108020421A (en) * | 2016-11-02 | 2018-05-11 | 上海汽车集团股份有限公司 | Engine whole vehicle test method, device and engine pedestal |
| CN108556838B (en) * | 2018-03-27 | 2019-11-12 | 吉利汽车研究院（宁波）有限公司 | Automobile energy control method, apparatus and system |
| CN108761339A (en) * | 2018-05-29 | 2018-11-06 | 吉林大学 | A kind of automobile starting battery fuel economy contrast test device and control methods |
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