CN105511443A - Testing apparatus of charging pile controller - Google Patents

Abstract

The invention relates to a charging pile controller testing device, which is characterized in that it includes a backboard, at least one plug-in board is plugged into the backboard, each plug-in board is provided with a corresponding CPU, and the plug-in board There is also a corresponding test interface for connecting with the charging pile controller to be tested, and an output interface for outputting test results. A testing device for a charging pile controller designed by the present invention can realize all-round automatic testing of each measuring point on the controller, improve testing efficiency, and improve testing items. Moreover, each plug-in board is integrated with an independent CPU, which can process the test collection data independently, and it is no longer necessary to transfer each test collection data to the centralized CPU to complete the processing, making the calculation program simple and fast, without grace Complicated procedures. At the same time, each plug-in board is integrated with an independent CPU, which can make the tests of each plug-in board run in parallel.

Description

A charging pile controller testing device

technical field

The invention relates to the field of electric vehicles, in particular to a testing device for a charging pile controller used in electric vehicles.

Background technique

Since 2014, the state and local governments have frequently issued favorable policies on new energy vehicles. According to incomplete statistics, as of September 2014, the state and local governments have issued a total of 45 policies related to new energy vehicles, of which 7 are issued by the state. At present, there are 88 cities nationwide for the promotion and application of new energy vehicles, of which 30 provinces and cities have implemented new energy vehicle promotion plans. In recent years, XJ Power Company's charging equipment has achieved excellent results in the market competition with products in the same industry. However, with the gradual expansion of the output of charging equipment, many problems have also been exposed in the factory test of charging pile products. .

The charging pile controller is the core component of the charging pile product, and the stability of the factory quality of this component directly affects the on-site operation effect. The traditional factory test method is: manually connect the power supply, and measure each measurement point on the controller one by one. Due to the high density of controller board components and many measurement points, the test efficiency is low. Similarly, because manual testing limits the possibility of testing some important chips on the board and the logic functions of the charging process, there are hidden dangers in the quality of the product when it leaves the factory. Therefore, it is necessary to develop a system that can perform all-round functional testing of the charging pile controller.

Contents of the invention

The purpose of the present invention is to provide a charging pile controller testing device to solve the technical problems of inconvenient testing and imperfect testing items in the existing testing.

To achieve the above object, the solution of the present invention includes:

A testing device for a charging pile controller, comprising a backboard on which at least one plug-in board is plugged, each plug-in board is provided with a corresponding CPU, and the plug-in board is also provided with a The corresponding test interface connected to the charging pile controller and the output interface for outputting test results.

Preferably, a power board is plugged into the back board, and the power board is provided with a power supply interface for supplying power to the controller of the charging pile to be tested; For plugging, a corresponding power supply circuit is arranged on the power board, and is used for the power board to supply power to the plug board through the backplane.

Further, the backplane is also provided with a communication circuit corresponding to each plug-in board for information exchange between each plug-in board.

Further, the backplane and the plug board are arranged in the case, and the test interface of the plug board is arranged on the front panel of the case.

Preferably, the backplane is also provided with a spare plug-in interface for connecting a spare plug-in board.

Further, the plug-in board includes an analog acquisition detection board, an analog output board, an input signal detection board, an output signal detection board, a liquid crystal interface detection board, a keyboard interface detection board, a CAN communication detection board, and an RS232 communication detection board , RS485 communication detection board.

Preferably, the CPU integrated in the plug-in board is an STM32 series microcontroller.

Further, the backplane communication interface is also provided on the backplane, and the backplane communication interface is connected to the communication interface on the rear panel of the chassis to transmit the information detected by each plug-in board and the processing results to the display screen.

Preferably, the rear panel of the chassis is also provided with a standard source input interface and an analog measurement interface, which are correspondingly connected to the test terminals on the back panel of the chassis.

A testing device for a charging pile controller designed by the present invention can realize all-round automatic testing of each measuring point on the controller, improve testing efficiency, and improve testing items.

Each plug-in board is integrated with an independent CPU, which can process the test collection data independently. It is no longer necessary to transfer each test collection data to the centralized CPU to complete the processing, making the calculation program simple and fast, without graceful and complicated programs. At the same time, each plug-in board is integrated with an independent CPU, which can make the tests of each plug-in board run in parallel.

Description of drawings

Figure 1 is a schematic diagram of the appearance and structure of the test case of the charging pile controller;

Figure 2 is a schematic diagram of the front panel of the test case of the charging pile controller;

Figure 3 is a schematic diagram of the rear panel of the test case of the charging pile controller;

Figure 4 is a schematic diagram of the connection between the rear panel and the backplane of the test case of the charging pile controller.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, it is a schematic diagram of the appearance structure of the test case of the charging pile controller of the present invention. It can be seen from the figure that various functional plug-in boards for testing and power supply are installed on the front panel of the case, and the rear panel of the case Interfaces for realizing functions such as power supply and communication are provided on it, specifically, as shown in FIG. 2 and FIG. 3 .

Figure 2 is a schematic diagram of the front panel of the charging pile controller test case. It can be seen from the figure that there are openings for installing plug-in boards on the front panel of the charging pile controller test case. In each opening, from From left to right, there are analog acquisition and detection boards, analog output boards, input signal detection boards, output signal detection boards, liquid crystal interface detection boards, keyboard interface detection boards, CAN communication detection boards, RS232 communication detection boards, and RS485 The communication detection board is also equipped with a power board. These modules are independent of each other and are all plugged into the backplane inside the chassis. The backplane is plugged into the plugboards through electrical connectors. The power supply board is equipped with corresponding power supply circuits for the power board provides power to the plug-in board. The backplane is also provided with a communication circuit corresponding to each plug-in board for information exchange between each plug-in board. These plug-in boards have built-in independent CPUs. Here, these CPUs are STM32 series microcontrollers. Each plug-in board is connected to the bottom board inside the chassis, and information is transmitted and interacted through the bottom board. In addition, a power board is installed on the front panel of the charging pile controller test case for supplying power to the external controller to be tested and the plug-in boards inside the test case.

The above embodiments give the order of arrangement of various test plug boards. As other embodiments, each detection plug board can also adopt other arrangements, which can be moved and replaced at will, which will not affect the use of equipment for factory testing, and will not Cause electrical damage to the backplane, this is because the backplane adopts a compatibility design, the interface specifications, models and pin ordering used to connect the plug-in boards on the backplane are exactly the same, and each plug-in board is used to connect to the backplane The specifications, models and pin ordering of the plug-in terminals are also exactly the same.

Figure 3 is a schematic diagram of the rear panel of the charging pile controller test box. It can be seen from the figure that there are standard source input interfaces, analog measurement interfaces, RS485 communication interfaces, and input power on the rear panel of the charging pile controller test box. interface and input power switch. The input power interface is connected to an external power supply, and through cooperation with the input power switch, supplies power to the power board installed on the front panel of the charging pile controller test case. Among them, the standard source input interface and the analog quantity measurement interface all adopt the KT4A52 sheath socket used with the 4mm banana head, the input power interface adopts the 3GTJE5 AC socket, the input power switch adopts the KCD3 ship type switch, and the RS485 communication interface is A DB9 pin socket.

In the above-mentioned embodiment, the rear panel of the chassis is provided with an RS485 communication interface, which is connected to the backplane communication interface located on the backplane, and is used to transmit the data collected by each plug-in board and the processing results thereof to an external display screen for completion For the display of the test results, as other implementations, an indicating device for displaying the test results can also be provided at the front end of each plug-in board for testing, such as setting an indicator light to only show the quality of the test results, or setting a liquid crystal Screen and other display devices to display the test results.

It can be seen from Figure 4 that pin 3 and pin 4 of the DB9 pin socket are respectively connected to pin 1 and pin 2 of the RS485 communication interface on the backplane; standard source interfaces V+ and V- are respectively connected to the corresponding V+, V- of the standard source interface J18, standard source interfaces I+, I- are respectively connected to the I+, I- of the standard source interface J17 on the backboard, and the analog measurement interfaces VC+, VC- are respectively connected to the corresponding analog test on the backboard VC+ and VC- of the interface J16.

During the factory test, the input power interface on the rear panel and the input power switch are used together to provide power to the power board. Plug-in board power supply.

When it is necessary to measure analog quantities such as DC voltage, DC current, and charging pile connection confirmation signal, the analog quantity acquisition and detection interface on the front end of the analog quantity acquisition and detection board is connected to the corresponding interface of the charging pile controller, and the analog quantity acquisition and detection board collects the charging pile controller. The output DC voltage, DC current, charging pile connection confirmation signal and other analog quantities, the independent CPU integrated in the analog quantity acquisition and detection board compares the acquired information with the built-in qualified standards through programming, and the comparison results are uploaded through the RS485 communication interface on the rear panel of the chassis to the display screen to realize the test of the analog signal.

The analog output plug-in board simulates on-site charging with large voltage and high current parameters and outputs the corresponding DC small voltage and DC small current signals. The independent CPU integrated in the analog output plug-in board first transmits the feedback data of the controller to the bottom board, and then passes through the chassis. The RS485 communication interface connected to the bottom board on the panel is uploaded to the display screen. The input and output signal detection board detects the hardware input and output circuits of the controller through optocoupler and relay sampling output form. The detection results are first transmitted to the bottom board, and then uploaded to the display screen through the RS485 communication interface connected to the bottom board on the rear panel of the chassis. . The communication port detection board is connected to the CAN port, RS232 port and RS485 port of the controller to be tested through an internal switching method. The plug-in board integrates an independent CPU to convert the CAN and RS232 standards into a unified RS485 interface standard, and the test results are passed through the RS485 communication interface on the rear panel of the chassis. Upload to display.

The above-mentioned embodiment gives the specific implementation of this solution, but the core solution of the present invention is that the charging pile controller test device includes a backboard, and at least one plug board is plugged into the back board, and each plug board Corresponding CPUs are provided on each of the plug-in boards, and corresponding test interfaces for connecting with the charging pile controller to be tested and output interfaces for outputting test results are also provided on the plug-in board. The communication function, power supply function, and information interaction function between the plug-in boards in the above-mentioned embodiments are all auxiliary functions added to improve the function of the charging pile controller test device. As other implementation modes, these functions It can be set according to the needs of the user, for example, one or two of the above three functions can be omitted or only, and other functions can also be set according to the needs of the user, such as other extended functions.

Specific embodiments of the present invention have been given above, but the present invention is not limited to the described embodiments. Under the idea given by the present invention, the technical means in the above-mentioned embodiments are transformed, replaced, and modified in ways that are easy for those skilled in the art, and the functions played are basically the same as those of the corresponding technical means in the present invention. 1. The purpose of the invention realized is also basically the same, and the technical solution formed in this way is formed by fine-tuning the above-mentioned embodiments, and this technical solution still falls within the protection scope of the present invention.

Claims (9)

1. a charging pile controller test device, it is characterized in that, comprise a backboard, backboard is plugged with at least one plugboard, each plugboard is equipped with corresponding CPU, plugboard is also provided with the corresponding test interface for connecting with charging pile controller to be measured, and the output interface for outputing test result.

2. a kind of charging pile controller test device according to claim 1, is characterized in that, described backboard is also plugged with a power panel, and this power panel is provided with the power supply interface for powering for charging pile controller to be measured; Described backboard, by electric connector and described each plugboard grafting, power panel is laid with corresponding feed circuit, is that described plugboard is powered for power panel by backboard.

3. a kind of charging pile controller test device according to claim 1, is characterized in that, described backboard is also provided with the communicating circuit corresponding to each plugboard, for carrying out information interaction between each plug-in card.

4. a kind of charging pile controller test device according to claim 1, it is characterized in that, described backboard and plugboard are located in cabinet, and the test interface of described plugboard is located on the front panel of cabinet.

5. a kind of charging pile controller test device according to claim 1, is characterized in that, described backboard is also provided with the interface for subsequent use connecting plug-in card for subsequent use.

6. a kind of charging pile controller test device according to claim 1, it is characterized in that, described plug-in card comprises analog acquisition check-out console, analog output, opens into input plate, outputs input plate, liquid crystal interface check-out console, keyboard interface check-out console, CAN communication check-out console, RS232 communication detection plate, RS485 communication detection plate.

7. a kind of charging pile controller test device according to claim 1, is characterized in that, the integrated CPU of described plug-in card is STM32 Series of MCU.

8. a kind of charging pile controller test device according to claim 1, it is characterized in that, described backboard is also provided with backboard communication interface, and described backboard communication interface is connected to information that each plug-in card detects by the communication interface be located on cabinet rear panel and result is outwards transferred on display screen.

9. a kind of charging pile controller test device according to claim 1, it is characterized in that, described cabinet rear panel is also provided with standard source input interface, analog measurement interface, the corresponding test terminals connected on cabinet dorsulum.