CN214585760U

CN214585760U - Electric automobile module integration test rack

Info

Publication number: CN214585760U
Application number: CN202120360232.3U
Authority: CN
Inventors: 曹俊扬; 黄斌超; 李汉贤
Original assignee: Zhejiang Zhongke Zhengfang Electronic Technology Co ltd
Current assignee: Zhejiang Zhongke Zhengfang Electronic Technology Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-11-02
Anticipated expiration: 2031-02-07

Abstract

The utility model provides an electric automobile module integration test rack, which comprises a power supply, the host computer, test panel and internal circuit, the host computer passes through the CAN bus and is connected with the internal circuit electricity, the IO interface of internal circuit arranges on test panel, internal circuit still includes PWM starting module and load interface, load interface and PWM starting module are connected, the external actual load of load is as the reference of the electric automobile that awaits measuring, the test panel includes module test area before the automobile body control, module test area behind the automobile body control, instrument test area and low-voltage box test area, the host computer stores test parameter and controls the execution of internal circuit and predetermines the test flow, the host computer is received, the storage, show the test result, the power is all the other partial powers supplies power. The utility model provides a prior art integration poor, can not carry out the technical problem of the systematic emulation test of a plurality of equipment simultaneously, in case meet the circumstances such as outage and still have the technical problem that takes place data loss easily in the test procedure.

Description

Electric automobile module integration test rack

Technical Field

The utility model belongs to the technical field of the vehicle distribution technique and specifically relates to indicate an electric automobile module integration test rack.

Background

New energy vehicles are rapidly developed under the strong support of national policies. The electric vehicle is a vehicle which runs by taking a vehicle-mounted power battery as power and driving wheels by a motor. The performance of the motor, the performance of the motor controller and the matching between the two are directly related to the dynamic property and the economical efficiency of the electric automobile. Because the working range of the motor belongs to the surface working condition, the working range of the motor is wide, and therefore the output end of the motor is required to be provided with a gearbox for reducing speed and increasing torque, the application range of the electric automobile is enlarged, and the motor can always work in a high-efficiency area. The power performance test of the motor, the performance test of the motor controller, the matching performance test of the motor and the motor controller, the gear shifting test of the gearbox, the verification and calibration of the whole vehicle control strategy and the power system dynamic test are all test contents which must be carried out by the electric vehicle. Compared with the traditional automobile, the electric automobile can realize braking energy recovery and zero-speed starting so as to save energy and reduce environmental pollution, and the performance should be tested initially on a test bench and then tested in real automobiles.

The existing electric automobile test bench is not monitored by upper computer software, generally, unloading and loading are carried out after one test is carried out manually to carry out the next test, the technical problems that the integration level is poor, systematic simulation tests of a plurality of devices cannot be carried out simultaneously exist, and in the test process, once the conditions such as power failure and the like exist, the technical problem that data loss is easy to occur still exists.

In order to solve the above-mentioned technical problem, patent document No. CN109001634A discloses an electric vehicle test rack comprising: a test platform; a hardware-in-loop HIL simulation platform connected with the test platform; the battery environment test equipment, the charging pile simulation equipment and the motor rack are respectively connected with the hardware-in-loop HIL simulation platform through a test injection line; the test platform controls the switching between the hardware-in-loop test and the real vehicle test through signal interaction with the hardware-in-loop HIL simulation platform; and respectively controlling one or more working states of the battery environment test equipment, the charging pile simulation equipment and the motor rack through the hardware-in-loop HIL simulation platform. According to the embodiment of the invention, a test bench combining a battery, a motor and an electric control is built by using real finished automobile parts, so that the hardware is quickly switched between the ring test and the real automobile test, the ring test of the hardware is flexible and convenient, the real automobile test is real, and the potential danger in the real automobile test process can be avoided. The invention improves the integration level of the test bench, but still does not solve the technical problem that data is easy to lose once power failure and other conditions occur in the test process.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the prior art has the technical problems of poor integration level, incapability of simultaneously carrying out systematic simulation test on a plurality of devices, and easy data loss in case of power failure and other conditions in the test process.

In order to solve the technical problem, the utility model provides an electric automobile module integration test bench, which comprises a power supply, an upper computer, a test panel and an internal circuit, the upper computer is electrically connected with the internal circuit through a CAN bus, an I/O interface of the internal circuit is arranged on the test panel, the internal circuit also comprises a PWM starting module and a load interface, the load interface is connected with the PWM starting module, the load is externally connected with an actual load as a reference of the electric automobile to be tested, the test panel comprises an automobile body control front module test area, an automobile body control rear module test area, an instrument test area and a low-voltage box test area, the upper computer stores the test parameters and controls the internal circuit to execute a preset test flow, the upper computer receives, stores and displays the test result, and the power supply supplies power to the rest parts. After the power supply is connected with the commercial power alternating current, the standby power supply is automatically charged and is connected with the upper computer to avoid data loss caused by power failure. And the upper computer processes the acquired data according to a preset drawing program and displays the data through a display screen or a printer.

Preferably, the vehicle body control front module test area, the vehicle body control rear module test area, the instrument test area and the low-voltage box test area all comprise a plurality of power output indicator lamps, a plurality of switching value input interfaces, a plurality of switching value output interfaces and a plurality of communication interfaces. And the switching value output interface outputs high level or low level according to manual selection or program control.

Preferably, the test device further comprises a shell and wheels, the test panel and the upper computer are installed on the front face of the shell, the internal circuit is arranged in the shell, and the wheels are installed on the lower surface of the shell.

Preferably, the wheels are universal wheels and are provided with brakes.

Preferably, the lower bottom surface of the shell is provided with a plurality of air inlet through holes with filter screens, and the upper bottom surface of the shell is provided with a plurality of heat dissipation through holes with fans.

Preferably, the low-voltage box test area further comprises a plurality of 24V direct current output interfaces, a CAN communication interface, a CAN detection interface and a pulse acquisition interface, and the 24V direct current output interfaces, the CAN communication interface, the CAN detection interface and the pulse acquisition interface are all connected with the internal circuit.

Preferably, the system further comprises a reserved standby I/O interface and a standby power supply, and the standby power supply is connected with the upper computer.

The utility model discloses a substantive effect is: 1) and by adopting the CAN bus technology, physical wiring is reduced, and hardware cost is saved.

2) The control load adopts an MOS chip, the PWM starting technology can reduce the starting current of the load, and the control load can be subjected to software current-limiting protection, so that not only can the rack be protected, but also the tested product can be protected.

3) The external wiring harness can be adjusted according to products, the flexibility is high, and the product coverage is wide.

4) The systematic simulation test of joinable actual load not only can carry out the overall test of laminating operating mode, can also carry out more audio-visual effect show. The technical problems that the integration level is poor, systematic simulation tests of a plurality of devices cannot be carried out simultaneously in the prior art, and data loss is easy to occur in the test process in case of power failure and other conditions are solved.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Fig. 2 is a connection principle framework diagram of the first embodiment.

In the figure: 1. the device comprises a shell, 2, an upper computer, 3, a vehicle body control front module testing area, 4, a vehicle body control rear module testing area, 5, an instrument testing area, 6, a first low-voltage box testing area, 7, a second low-voltage box testing area, 8, a label, 9, a power output indicator lamp, 10, a switching value output interface, 11, a switching value input interface and 12, universal wheels.

Detailed Description

The following provides a more detailed description of the present invention, with reference to the accompanying drawings.

As shown in fig. 1, the embodiment includes a housing 1, a power supply, an upper computer 2, a test panel, a universal wheel 12 and an internal circuit, wherein the power supply is provided with a standby power supply, and the standby power supply is automatically charged after being connected with commercial power alternating current. Host computer 2 through the CAN bus with the internal circuit electricity is connected, the IO interface of internal circuit arranges on the test panel, the internal circuit still includes PWM start module and load interface, load interface with PWM start module connects, the external actual load of load interface is as the reference of the electric automobile that awaits measuring, the test panel includes module test area 3 before the automobile body control, module test area 4, instrument test area 5 and low-voltage box test area behind the automobile body control, host computer 2 storage test parameter and control the test flow is predetermine in the internal circuit execution, host computer 2 receives, saves, demonstrates the test result, the power is all the other partial powers supplies power. The test panel comprises a vehicle body control front module test area 3, a vehicle body control rear module test area 4, an instrument test area 5 and a low-voltage box test area, and the low-voltage box test area is divided into a first low-voltage box test area 6 and a second low-voltage box test area. Each test area is provided with a label 8 with a marking function. The front module test area for vehicle body control, the rear module test area for vehicle body control, the instrument test area and the low-voltage box test area all comprise a plurality of power output indicator lamps 9, a plurality of switching value input interfaces 11, a plurality of switching value output interfaces 10 and a plurality of communication interfaces. The switching value output interface 10 outputs a high level or a low level according to manual selection or program control.

As shown in fig. 2, the upper computer 2 is connected with the test panel by a CAN bus, the control load is an MOS chip, and the PWM start-up technique CAN reduce the load start-up current, and CAN perform current-limiting protection by software, thereby protecting the rack and the tested product. The rack is provided with a power resistor and an indicator light, and is connected with the instrument, the module and the distribution box through the connector and the wire harness and then communicated with the upper computer 2. Both can the working condition of emulation instrument, module and block terminal on the car, can carry out the functional test of single instrument, module and block terminal alone again, because the pencil can be adjusted according to the product, can test and the emulation to the product of different models. In addition, the external interface is simultaneously connected with the same interface in parallel, and can be simultaneously connected with an actual load, so that the test is close to the actual working condition. And automatic testing can be performed through software of the upper computer.

The above-described embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the invention as set forth in the claims.

Claims

1. An electric automobile module integration test bench is used for automatic test or simulation of performances of each component of an electric automobile and is characterized by comprising a power supply, an upper computer, a test panel and an internal circuit, wherein the upper computer is electrically connected with the internal circuit through a CAN bus, an I/O interface of the internal circuit is arranged on the test panel, the internal circuit further comprises a PWM starting module and a load interface, the load interface is connected with the PWM starting module, the load interface is externally connected with an actual load to serve as a reference of the electric automobile to be tested, the test panel comprises a body control front module test area, a body control rear module test area, an instrument test area and a low pressure tank test area, the upper computer stores test parameters and controls the internal circuit to execute a preset test flow, and receives, stores and displays test results, the power supply supplies power to the rest parts.

2. The electric vehicle module integration test bench of claim 1, wherein: the vehicle body control front module test area, the vehicle body control rear module test area, the instrument test area and the low-voltage box test area all comprise a plurality of power output indicator lamps, a plurality of switching value input interfaces, a plurality of switching value output interfaces and a plurality of communication interfaces.

3. The electric vehicle module integration test bench of claim 2, wherein: still include shell and wheel, test panel and host computer are all installed the shell is positive, the internal circuit is arranged in the shell, the wheel is installed the shell lower surface.

4. The electric vehicle module integration test bench of claim 3, wherein: the wheels are universal wheels and are provided with brakes.

5. The electric vehicle module integration test bench of claim 3, wherein: the bottom surface is equipped with a plurality of air inlet through-holes of taking the filter screen under the shell, the bottom surface is equipped with a plurality of heat dissipation through-holes of taking the fan on the shell.

6. The electric vehicle module integration test bench of claim 2, wherein: the low-voltage box test area also comprises a plurality of 24V direct current output interfaces, a CAN communication interface, a CAN detection interface and a pulse acquisition interface, and the 24V direct current output interfaces, the CAN communication interface, the CAN detection interface and the pulse acquisition interface are all connected with the internal circuit.

7. The electric vehicle module integration test bench of claim 1 or 2, wherein: the system further comprises a reserved standby I/O interface and a standby power supply, and the standby power supply is connected with the upper computer.