CN214096607U - Integrated test bench for three-electric-system of pure electric vehicle - Google Patents
Integrated test bench for three-electric-system of pure electric vehicle Download PDFInfo
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- CN214096607U CN214096607U CN202022594509.7U CN202022594509U CN214096607U CN 214096607 U CN214096607 U CN 214096607U CN 202022594509 U CN202022594509 U CN 202022594509U CN 214096607 U CN214096607 U CN 214096607U
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Abstract
The utility model provides a pure electric vehicles three electric system integration test bench, this laboratory bench includes whole car three electric system module, is the hardware equipment of being surveyed of whole car; the dynamometer module is used for carrying out working condition simulation test on the finished automobile three-electric system module; and the environment temperature simulation module is connected with the finished automobile three-electrical-system module and used for simulating different environment temperatures of the power battery system of the three-electrical-system module. The using method comprises the following steps: and acquiring operation data of the driving motor under different working conditions, and carrying out power consumption and performance tests on the three-power system on a test bed by taking the operation data as target data and at different temperatures of the power battery system. The utility model discloses pencil, procedure trouble are many when effectual having solved among the prior art real vehicle debugging, and the trouble is difficult to the problem of handling, can accomplish the complicated operating mode simulation test under the different temperatures in the design phase, verify whole car design index in advance, improve development efficiency.
Description
Technical Field
The utility model belongs to the technical field of pure electric vehicles makes, concretely relates to three electric system integration test bench of pure electric vehicles.
Background
The three-electric system of the pure electric vehicle comprises a power battery system, a driving motor system and a vehicle control unit, and is the most core component of the new energy vehicle, and the performance of the pure electric vehicle can be directly determined by the advantages and disadvantages of the pure electric vehicle.
However, in the design stage of the pure electric vehicle at present, the calculation deviation is easily caused because theoretical calculation and simulation calculation are limited to the completeness and accuracy of calculation input parameters. Meanwhile, the state of the single system when the whole vehicle runs cannot be accurately simulated when the single system is tested, so that the dynamic property and the economic property index of the whole vehicle are difficult to accurately evaluate in a design stage, particularly the comprehensive working condition driving range index at different temperatures, and the test can be carried out only by carrying out a road test after the vehicle is assembled. In this way, the performance of the vehicle may not meet the design index or far exceed the design index, and then the secondary matching design of the product is caused, and the development time and the design cost of the vehicle are increased.
At present, most domestic electric automobile manufacturers can directly enter a real automobile debugging link after completing single system test. When the function debugging of the real vehicle is carried out, various problems such as wrong definition of a wire harness, incomplete control program and the like can be inevitably encountered, but the problems are limited by the space of the whole vehicle, the inspection and the replacement of parts are difficult, and the workload is large.
The utility model has the following contents:
based on the above defect the utility model provides a three electric system integration test bench of pure electric vehicles, effectual pencil, program fault are many when having solved among the prior art real vehicle debugging, and the trouble is difficult to the problem of handling, combine whole car emulation software emulation and test bench test simultaneously, utilize ambient temperature simulation module, can accomplish the complicated operating mode simulation test under the different temperatures in the design phase, verify whole car design index in advance, improve development efficiency.
The utility model discloses a realize through following technical scheme:
first aspect, a three electric system integration test bench of pure electric vehicles includes:
the finished automobile three-electrical-system module is a tested hardware device of the finished automobile;
the dynamometer module is used for carrying out working condition simulation test on the finished automobile three-electric system module;
and the environment temperature simulation module is connected with the finished automobile three-electrical-system module and used for simulating different environment temperatures of the power battery system of the three-electrical-system module.
Further, the whole vehicle three-electric-system module comprises:
the vehicle control unit is used for receiving signals and sending instructions;
the power battery system is connected with the vehicle control unit and used for receiving the command sent by the vehicle control unit and sending a battery signal to the vehicle control unit; the system is also used for providing electric energy for the driving motor system;
the driving motor system is connected with the power battery system and the vehicle control unit and used for receiving the command sent by the vehicle control unit and sending a driving motor state signal to the vehicle control unit; the power battery system is also used for receiving electric energy provided by the power battery system and sending a motor state signal to the power battery system; the braking energy recovery device is used for completing braking energy recovery and feeding power to the power battery system;
the accelerator pedal is connected with the vehicle control unit and used for sending an accelerator pedal opening degree signal to the vehicle control unit;
the brake pedal is connected with the vehicle control unit and used for sending a brake pedal opening degree signal to the vehicle control unit;
the gear shifter is connected with the vehicle control unit and used for sending a gear signal to the vehicle control unit;
further, the dynamometer module includes:
the dynamometer is connected with the driving motor system and is used for carrying out power consumption test on the driving motor and simulating different working conditions;
and the dynamometer control platform is connected with the dynamometer and the vehicle control unit, and is used for sending instructions to the dynamometer, receiving state signals of the dynamometer and sending throttle signals to the vehicle control unit.
Further, this test bench still includes:
the monitoring information display screen is connected with the vehicle control unit and used for receiving a state signal of the vehicle control unit;
and the power battery testing system is connected with the power battery system and used for receiving the state signal of the power battery system and charging and discharging the battery.
In a second aspect, a test method for performing three-electric-system integration test on a pure electric vehicle by using the test stand in the first aspect includes:
the method comprises the steps of obtaining operation data of a driving motor under different working conditions, carrying out power consumption and performance tests on the three-electric system on a test bench by taking the operation data as target data and at different temperatures of a power battery system, wherein the test bench is used for integrating hardware equipment of the three-electric system and running of corresponding programs.
Preferably, the acquiring the operation data of the driving motor under different working conditions includes: and acquiring performance parameters of the driving motor, and calculating the running data according to the performance parameters by combining target vehicle model parameters and different working condition modes in the simulation software.
Preferably, the acquiring the performance parameters of the driving motor comprises: and testing external characteristic data and efficiency data of the driving motor by using the dynamometer.
Preferably, the different operating mode includes: constant speed working condition and non-constant speed working condition; the operation data are the rotating speed value and the torque value corresponding to each time node of the driving motor in a certain time.
Preferably, the operating data being target data includes: and editing the running program of the test bed by using the running data, and setting the running data as a target value of the running program, so that the driving motor reaches the target value when being tested for power consumption.
Preferably, the different temperatures of the power cell system include: and heating or refrigerating the power battery system at different temperatures by utilizing an environment temperature simulation module capable of simulating different environment temperatures.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a during real car debugging among the prior art pencil, procedure trouble are many, and the trouble is difficult to the problem of handling, combine whole car emulation software emulation and test bench test simultaneously, utilize ambient temperature simulation module, can accomplish the complicated operating mode simulation test under the different temperatures in the design phase, verify whole car design index in advance, improve development efficiency. The simulation calculation process is separated from the experiment table, so that the experiment efficiency can be greatly improved, the simulation is carried out by utilizing external simulation software, and compared with the hardware simulation of an integral system on the experiment table in the traditional technology, the simulation is simpler, more convenient and more convenient, the complex experiment table setting is avoided, and the equipment purchase cost is reduced; after the theoretical real-time rotating speed and torque of the driving motor under various working conditions are simulated in a simulation mode, the theoretical value is input into a dynamometer program, and actual simulation of different working conditions can be achieved through the dynamometer, so that power consumption and performance testing of the three-electric system is achieved; the temperature control of the power battery is realized through the environment temperature simulation module, so that the influence of the temperature under different environments on the work of the power battery is realized.
Description of the drawings:
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flowchart illustrating steps of a three-electrical-system integration test method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a three-electrical-system integration test method according to another embodiment of the present invention;
fig. 3 is a connection structure diagram of a module of a three-electrical-system integrated test bench according to an embodiment of the present invention;
fig. 4 is a block diagram of a module connection structure of a three-electrical-system integrated test bench according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "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 connected or 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 invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a flowchart illustrating steps of a test method for testing integration of three electric systems of a pure electric vehicle according to an embodiment of the present invention; as shown in fig. 1, the method includes:
1. and acquiring the operation data of the driving motor under different working conditions.
The running data of the tested driving motor system under different working conditions can be obtained by acquiring the real-time rotating speed and torque of the real vehicle in the road test process under different working conditions, so that the working conditions of the real vehicle are reproduced on the test board, the control strategy is optimized, and the problem of poor repeatability in the road test of the real vehicle is avoided.
2. And performing power consumption and performance tests on the three-electrical system on a test bed by taking the operation data as target data and at different temperatures of the power battery system.
And editing an operation program on the test bed by using the operation data acquired in the steps, namely the real-time rotating speed and the torque of the driving motor under different working conditions, and setting the operation data as target data, namely setting the acquired operation data as the target data required by the driving motor when the driving motor is tested on the test bed. Under the national standard working condition, the rotating speed of the driving motor is a certain specific value at each moment, the torque of the driving motor also needs to reach a certain specific value, at the moment, the specific value is a target value, and the driving motor can reach the target value to the maximum extent by cooperatively controlling the dynamometer and the three electric systems, so that the simulation of the running condition of the vehicle is realized, and the test of the power consumption and the performance of the three electric systems is further realized. If the test result shows that the power consumption is too large, potential problems are exposed, and corresponding adjustment is urgently needed in design, such as low efficiency of a driving motor system, most of the working range of the driving motor is positioned outside a high-efficiency area, poor low-temperature performance of a power battery and the like. Therefore, problems of the real vehicle can be found through experiments, and an improved scheme is provided for vehicle optimization according to the experimental data.
In an implementation manner, optimization of the scheme can be further performed based on the above embodiment, and is used for evaluating the dynamic property and the economic property of the whole vehicle at the design stage, specifically, as shown in fig. 2, fig. 2 is a flowchart of steps of a three-electric-system integration test method provided by another embodiment; the method comprises the following steps:
101. the dynamometer is used for testing the external characteristic data and the efficiency data of the driving motor,
and the external characteristic data and the efficiency data of the driving motor are performance parameters.
The performance test of the drive motor system is executed according to GB/T18488.2-2015, and external characteristic data and system efficiency data of the drive motor are obtained through the test.
102. And calculating the operation data by combining the external characteristic data and the efficiency data of the driving motor with target vehicle model parameters and different working condition modes in simulation software.
The simulation calculation method comprises the steps of inputting vehicle parameters and motor system performance test parameters by using finished vehicle simulation software, calculating by using a constant speed method and a working condition method, wherein the constant speed method and the working condition method comprise but are not limited to 40km constant speed, 60km constant speed, C-WTVC working conditions and NEDC working conditions, and outputting working condition operation calculation results such as rotating speed and torque of a driving motor system.
201. And editing the running program of the test bed by using the running data.
202. And setting the running data as a target value of the running program.
Specifically, the operation data (time, rotating speed and torque) are input into a dynamometer control platform, and a dynamometer operation program is edited.
203. And heating or refrigerating the power battery system at different temperatures by utilizing an environment temperature simulation module capable of simulating different environment temperatures.
Specifically, the power battery system is placed in an environment bin, the power battery system is preprocessed according to a power battery testing standard GB/T31467.2-2015 before working condition testing, and the power battery testing system is closed after preprocessing. And setting the temperature of the environmental chamber as the target environmental temperature, and standing to enable the power battery system to complete environmental adaptation.
204. And carrying out power consumption test on the three electric systems.
Specifically, the throttle input signal of the three-electric-system is switched to the electronic throttle, the dynamometer control platform coordinately controls the output signal of the electronic throttle and the rotation speed limit value of the dynamometer according to the running working condition of the test bed running program in the steps 201 and 202, the output torque of the three-electric-system is adjusted, and meanwhile, the load of the dynamometer is dynamically regulated in a PID mode, so that the output rotation speed and the output torque of the driving motor system are highly matched with the target value, the running state of the real vehicle is simulated, and the indexes such as energy consumption and driving range are tested.
Based on the above experimental method, this embodiment also provides a test bed for testing integration of three electrical systems of a pure electric vehicle, as shown in fig. 3, fig. 3 is a connection structure diagram of modules of the test bed for testing integration of three electrical systems provided by an embodiment of the present invention; this test bench includes:
the finished automobile three-electrical-system module 4 is a tested hardware device of the finished automobile;
the dynamometer module 5 is used for carrying out working condition simulation test on a driving motor system of the finished automobile three-electrical-system module; and the environment temperature simulation module 3 is connected with the finished automobile three-electrical-system module and is used for simulating different environment temperatures of the power battery system of the three-electrical-system module.
As a further embodiment, as shown in fig. 4, fig. 4 is a connection structure diagram of a module of a three-electrical-system integration test bench according to another embodiment of the present invention. The whole vehicle three-electric-system module 4 comprises:
the vehicle control unit 401 is configured to receive a signal and send an instruction; the power battery system 402 is connected with the vehicle control unit and used for receiving the command sent by the vehicle control unit and sending a battery signal to the vehicle control unit; the driving motor system 403 is connected with the power battery system and the vehicle control unit, and is used for receiving a command sent by the vehicle control unit and sending a driving motor state signal to the vehicle control unit; the system is also used for receiving the electric energy provided by the power battery system, recovering the braking energy and feeding the power battery system; the accelerator pedal 406 is connected with the vehicle control unit and used for sending an accelerator pedal opening degree signal to the vehicle control unit; the brake pedal 405 is connected with the vehicle control unit and used for sending a brake pedal opening degree signal to the vehicle control unit; the gear shifter 404 is connected with the vehicle control unit and used for sending a gear signal to the vehicle control unit;
the dynamometer module includes:
the dynamometer 502 is connected with the drive motor system and is used for carrying out power consumption test on the drive motor and simulating different working conditions; and the dynamometer control platform 501 is connected with the dynamometer and the vehicle control unit, and is used for sending instructions to the dynamometer, receiving state signals of the dynamometer and sending an accelerator signal to the vehicle control unit.
This test bench still includes:
the monitoring information display screen 6 is connected with the vehicle control unit and used for receiving a state signal of the vehicle control unit; and the power battery testing system 7 is connected with the power battery system and used for receiving the state signal of the power battery system and charging and discharging the battery.
During operation, the installation of a laboratory bench and the function debugging of the three-electric system need to be carried out firstly, and the method specifically comprises the following steps:
and (3) mechanically connecting the three-electric system of the designed vehicle type with a test bed, communicating and connecting high and low voltage lines to jointly form the three-electric system integrated test bed.
Specifically, the three-electrical-system integration test bench comprises: the system comprises a dynamometer, a dynamometer control platform, a power battery testing system, an environment bin, a monitoring information display screen, an acceleration/braking pedal and a gear shifter, and a tested three-electrical system comprises a power battery system, a driving motor system and a vehicle control unit. In addition, related parts such as key switches and the like can be added into the test according to requirements.
The vehicle control unit is respectively connected with the power battery system, the driving motor system, the monitoring information display screen, the acceleration/braking pedal, the gear shifter, the key switch and the dynamometer control platform through control wire harnesses such as CAN wires and hard wires. The state of the three-electric system is controlled by receiving instructions of a dynamometer control platform, an accelerator pedal, a brake pedal, a gear shifter and a key switch. The monitoring information display screen can monitor and collect communication signals of the three-electric system. The power battery system is arranged in the environment bin and is simultaneously connected with the driving motor system and the power battery testing system at high pressure. The environment bin is used for simulating different environment temperatures, and the power battery testing system is used for charging and discharging the power battery. The driving motor system is mechanically connected with a dynamometer, and the dynamometer is responsible for applying load to the driving motor.
After the connection is finished, function debugging is carried out, and specifically, the function test of the three-electric system comprises high-low voltage power-on and power-off test, CAN network communication test, drive and control function test and the like. In the testing process, different control signals are input to the three electric systems by changing a key switch, a gear of a gear shifter, the opening degree of an accelerator/brake pedal and the like, so that the three electric systems work in different states. Different test mode requirements are matched by changing the work modes of the dynamometer, such as a rotating speed limit mode, a torque limit mode, a back-dragging mode and the like. And monitoring communication signals and node states of the three electric systems through the monitoring information display screen, and judging whether the CAN network and the control logic are normal. The dynamometer control platform is used for monitoring the output rotating speed and the output torque of the driving motor and judging whether the response and the output of the power system reach the standard or not. The test can find the line problem and the program fault of the three-electric system in time, and synchronously carry out the verification of the control strategy of the whole vehicle and the calibration of the electric control parameters of the parts, thereby greatly reducing the loading and debugging time.
The utility model provides a during real car debugging among the prior art pencil, procedure trouble are many, and the trouble is difficult to the problem of handling, combine whole car emulation software emulation and test bench test simultaneously, utilize ambient temperature simulation module, can accomplish the complicated operating mode simulation test under the different temperatures in the design phase, verify whole car design index in advance, improve development efficiency. The simulation calculation process is separated from the experiment table, so that the experiment efficiency can be greatly improved, the simulation is carried out by utilizing external simulation software, and the simulation is simpler, more convenient and more convenient than the hardware simulation of an integral system on the experiment table in the traditional technology, so that the complicated experiment table setting is avoided, and the equipment purchase cost setting is reduced; after the theoretical real-time rotating speed and torque of the driving motor under various working conditions are simulated in a simulation mode, the theoretical value is input into a dynamometer program, actual simulation of different working conditions can be achieved through the dynamometer, and therefore power consumption and performance testing of the three-electric system is achieved; the temperature control of the power battery is realized through the environment temperature simulation module, so that the influence of the temperature under different environments on the work of the power battery is realized.
The running parameters such as the rotating speed and the torque of the driving motor system required by the running working condition of the test bench can also be acquired through the real-vehicle road test, so that the real-vehicle working condition is reproduced on the test bench, the control strategy is optimized in a laboratory, and the problem of poor repeatability in the real-vehicle road test is solved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a three electric system integration test bench of pure electric vehicles which characterized in that includes:
the finished automobile three-electrical-system module is a tested hardware device of the finished automobile;
the dynamometer module is used for carrying out working condition simulation test on the finished automobile three-electric system module;
and the environment temperature simulation module is connected with the finished automobile three-electrical-system module and used for simulating different environment temperatures of the power battery system of the three-electrical-system module.
2. The test bench of claim 1, wherein the entire vehicle three-electrical-system module comprises:
the vehicle control unit is used for receiving signals and sending instructions;
the power battery system is connected with the vehicle control unit and used for receiving the command sent by the vehicle control unit and sending a battery signal to the vehicle control unit; the system is also used for providing electric energy for the driving motor system;
the driving motor system is connected with the power battery system and the vehicle control unit and used for receiving the command sent by the vehicle control unit and sending a driving motor state signal to the vehicle control unit; the system is also used for receiving the electric energy provided by the power battery system, recovering the braking energy and feeding the power battery system;
the accelerator pedal is connected with the vehicle control unit and used for sending an accelerator pedal opening degree signal to the vehicle control unit;
the brake pedal is connected with the vehicle control unit and used for sending a brake pedal opening degree signal to the vehicle control unit;
and the gear shifter is connected with the vehicle control unit and used for sending a gear signal to the vehicle control unit.
3. The test rig of claim 2, wherein the dynamometer module includes:
the dynamometer is connected with the driving motor system and is used for carrying out power consumption test on the driving motor and simulating different working conditions;
and the dynamometer control platform is connected with the dynamometer and the vehicle control unit, and is used for sending instructions to the dynamometer, receiving state signals of the dynamometer and sending throttle signals to the vehicle control unit.
4. The test stand of claim 2, further comprising:
the monitoring information display screen is connected with the vehicle control unit and used for receiving a state signal of the vehicle control unit;
and the power battery testing system is connected with the power battery system and used for receiving the state signal of the power battery system and charging and discharging the battery.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935720A (en) * | 2022-02-18 | 2022-08-23 | 中国第一汽车股份有限公司 | Vehicle-mounted power performance verification method, system, terminal and storage medium for power battery |
| CN115113086A (en) * | 2022-05-18 | 2022-09-27 | 中国第一汽车股份有限公司 | Vehicle power distribution test system and method based on vaHil environment simulation |
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2020
- 2020-11-11 CN CN202022594509.7U patent/CN214096607U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114935720A (en) * | 2022-02-18 | 2022-08-23 | 中国第一汽车股份有限公司 | Vehicle-mounted power performance verification method, system, terminal and storage medium for power battery |
| CN115113086A (en) * | 2022-05-18 | 2022-09-27 | 中国第一汽车股份有限公司 | Vehicle power distribution test system and method based on vaHil environment simulation |
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