CN214748869U

CN214748869U - Extended interface of PEMFC engine test system

Info

Publication number: CN214748869U
Application number: CN202022962235.2U
Authority: CN
Inventors: 雷枭; 丁小松
Original assignee: Guangzhou Kinte Industrial Co Ltd
Current assignee: Guangzhou Kinte Industrial Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-11-16
Anticipated expiration: 2030-12-10

Abstract

The utility model provides a PEMFC engine test system's extension interface, through signal type, signal flow direction and the semaphore that detect each interface inner contact of PEMFC engine in advance, if detect a certain contact in the interface and be used for inputing specific voltage, then insert analog signal output interface with the plug of hookup interface to adjust analog signal output interface's direct current voltage with specific voltage matches, then insert the probe in this PEMFC engine interface the contact, so as to analogize and insert each contact of probe of hookup interface, finally realize the drive to this PEMFC engine interface.

Description

Extended interface of PEMFC engine test system

Technical Field

The utility model relates to a PEMFC (Proton Exchange Membrane Fuel Cells, Proton Exchange Membrane Fuel cell) field especially relates to a PEMFC engine test system's expansion interface.

Background

The PEMFC engine belongs to a device which adopts PEMFC as electromotive force to output to a motor, for the PEMFC, numerous key parts, materials, assembly processes and the like in the industrial chain are monopolized by international science and technology for a long time, and enterprises in the field of China can only assemble the PEMFC engine by purchasing the PEMFC and sell the PEMFC with brands.

Because the PEMFC engine integrates functional units such as humidification, flow control and measurement, pressure control and the like, according to the GB/T2454-:

a) stack operating temperature;

b) voltage and current of the stack and fuel cell power generation system;

c) can receive start-stop signals;

d) can accept the given signal of power;

e) a fault code can be given.

However, when the PEMFC component and material and the matched test system are sold to domestic enterprises, the PEMFC component and material and the test system are often priced separately, and since the domestic and foreign data documents in the PEMFC research field describe very few interfaces for testing the above information, and the interfaces are not universal for PEMFC and engines of different brands and models, the test system can only be applied to PEMFC of the same brand and model, and a test system of a single brand and model cannot test PEMFC of other brands and models.

In addition, even though the PEMFC test system and the PEMFC engine of the same brand are available, the existing PEMFC test system can only implement one-to-one test, and in order to obtain excessive profits at the beginning of international technology, it is not willing to develop and manufacture a batch test system capable of implementing one-to-many tests, so that the efficiency of testing the PEMFC engine is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PEMFC engine test system's extension interface aims at realizing that PEMFC test system can carry out the test in batches to the PEMFC engine of different brand models.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an extended interface of a PEMFC engine test system, comprising a tuning circuit board having a ground and a bus for providing a DC voltage, characterized by further comprising:

the system comprises a communication programmable intelligent gateway, a PEMFC engine test system, a network signal conversion module, a network signal processing module and a network signal processing module, wherein the communication programmable intelligent gateway is used for connecting the PEMFC engine test system to convert network signals sent by the PEMFC engine test system and outputting the network signals to the PEMFC engine through communication interfaces with various protocols;

the analog quantity signal unit comprises at least two groups of analog signal output interfaces and is used for outputting adjustable analog signal quantity;

the digital quantity signal unit comprises at least two groups of digital signal output interfaces and at least two groups of digital signal input interfaces and is used for outputting or receiving digital signal quantity formed by the on-off state of the circuit;

the expansion interface panel is used for bearing the analog signal output interface, the digital signal output interface and the communication interface;

and the connecting interface consists of a plug, a lead and a probe, wherein one end of the lead is connected with the plug which can be inserted into the analog signal output interface or the digital signal output interface, and the other end of the lead is connected with a contact pin which is used for inserting the contact point in each interface of the PEMFC engine.

The technical scheme can be improved as follows:

the analog quantity signal unit is connected with a voltage limiting resistor of the bus, a voltage adjusting potentiometer connected in series with the voltage limiting resistor, and an electric quantity transmitting module carried on the setting circuit board and connected in series with the voltage adjusting potentiometer, the electric quantity transmitting module is also electrically connected with the analog signal output interface, the voltage adjusting potentiometer provides adjustable direct current voltage for the input of the electric quantity transmitting module, and dynamic response in a direct current voltage range or a direct current range is provided for the analog signal output interface through linear mapping of primary/secondary side isolation electric parameters.

And the analog signal output interface is used for displaying the current voltage set value in real time by a display meter connected in parallel on a line when outputting dynamic response in a direct-current voltage range to the direct-current voltage output interface.

And when the analog signal output interface is a dynamic response direct current output interface used for outputting a direct current within a range, a display meter connected in series on a line displays a current given value in real time.

The digital quantity signal unit is divided into a digital quantity signal output unit and a digital quantity signal input unit, the digital quantity signal input unit is used for receiving the digital signal returned by the PEMFC engine, and the digital quantity signal output unit is used for outputting the digital signal sent by the PEMFC test system.

The digital quantity signal output unit comprises a double-position switch, two contacts on one side of the double-position switch are respectively connected with a power supply bus and a ground wire, and the other side of the double-position switch is connected with the digital signal output interface.

The digital quantity signal input unit comprises a double-position switch and a solid-state relay for controlling the double-position switch to be opened and closed, a coil of the solid-state relay is externally connected with the digital signal input interface to form a loop, two contacts on one side of the double-position switch are respectively connected with a power supply bus and a ground wire, and the other side of the double-position switch is connected with the PEMFC engine test system to return digital signals to the PEMFC engine test system.

The PEMFC engine test system further comprises at least two groups of analog signal input interfaces, and the at least two groups of analog signal input interfaces are used for receiving analog signals sent by the PEMFC engine and transmitting the analog signals back to the PEMFC engine test system.

The analog signal output interface, the digital signal input interface and the analog signal input interface are 15-30 groups.

The utility model discloses following beneficial effect has:

(1) different analog signal quantities are output through the connecting interface, the interface special for the PEMFC engine is cracked by driving the PEMFC engine interface through the probe, and then a special PEMFC engine test system is not required to be purchased for each type, and only signal conversion is required to be carried out through the extension interface, so that the single type engine test system can test the PEMFC engines of different types, and the test cost of the PEMFC engine is greatly reduced.

(2) Through this extension interface, because can be equipped with tens of groups analog signal output interface respectively in theory, digital signal output interface, digital signal input interface and analog signal input interface, the output analog semaphore or the digital semaphore of every interface all can independently be adjusted, and realize driving the interface of different model PEMFC engines through the probe that corresponds every interface, realize finally that same PEMFC engine test system realizes testing many different models 'PEMFC engines through the extension interface, promote efficiency of software testing by a wide margin, reduce PEMFC engine's test cost by a wide margin.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below.

FIG. 1 is a schematic diagram of a PEMFC engine test system according to the present invention;

FIG. 2 is a system logic diagram of the PEMFC engine test system and its expansion interface according to the present invention;

FIG. 3 is a communication network diagram of the PEMFC engine test system and its expansion interface according to the present invention;

fig. 4 is a circuit structure diagram of an analog signal unit for outputting dc voltage according to the present invention;

fig. 5 is a circuit structure diagram of an analog signal unit for outputting dc current according to the present invention;

fig. 6 is a circuit structure diagram of a digital quantity signal unit for outputting digital signals according to the present invention;

fig. 7 is a circuit structure diagram of a digital quantity signal unit for inputting digital signals according to the present invention;

fig. 8 is a schematic structural diagram of the expansion interface panel according to the present invention;

fig. 9 is a schematic structural view of the connection interface of the present invention;

FIG. 10 is an enlarged view of a portion of the structure of FIG. 4;

FIG. 11 is an enlarged view of a portion of the structure of FIG. 5;

FIG. 12 is an enlarged view of a portion of the structure of FIG. 6;

fig. 13 is an enlarged view of a portion of the structure of fig. 7.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

The utility model provides an extension interface that is used for PEMFC engine test system as shown in figure 1, this extension interface's structural style is as shown in figure 2, and internally mounted has the setting circuit board that possesses the ground wire and be used for providing DC voltage's generating line, still includes the intelligent gateway able to programme of communication, analog signal unit, digital signal unit, extension interface panel and hookup interface.

The communication programmable intelligent gateway is used for connecting the PEMFC engine test system to convert network signals sent by the PEMFC engine test system, outputting the network signals to the PEMFC engine through communication interfaces of various different protocols, and adopting a Modbus-to-CAN module with the model of GCAN-204/205 of the brand. This Modbus changes bus analog controller of CAN module integration 1 way CAN interface, 1 way ethernet interface, 1 way RS485 interface, 1 way RS232 interface, and the pin definition sees table 1 for connect CAN bus, RS232/485 bus, ethernet bus, and support common industry field bus, if: CAN open, Modbus RTU, Modbus TCP, etc., as shown in fig. 3, CAN utilize these communication buses to implement PEMFC engine test system extensions and their real-time communication with PEMFC engines.

TABLE 1

As shown in fig. 4 and 10, the analog quantity signal unit is used for outputting a DC voltage, and includes 16 sets of DC voltage output interfaces, voltage limiting resistors R1-R16 connected to a bus, voltage adjusting potentiometers WR 1-WR 16 respectively connected in series to the voltage limiting resistors R1-R16, and electric quantity transmission modules BV 1-BV 16 mounted on the setting circuit board and respectively connected in series to the voltage adjusting potentiometers WR 1-WR 16, and is used for displaying a current voltage set value in real time by display tables B1-B16 respectively connected in parallel to lines of the DC voltage output interfaces when a dynamic response is performed to the DC voltage output interfaces within a range of DC 0-5V.

As shown in fig. 5 and 11, the analog quantity signal unit is used for outputting a direct current, and includes 16 sets of direct current output interfaces, voltage limiting resistors R1-R16 connected with a bus, voltage adjusting potentiometers WR 1-WR 16 respectively connected in series with the voltage limiting resistors R1-R16, electric quantity transmission modules BV 1-BV 16 mounted on the setting circuit board and respectively connected in series with the voltage adjusting potentiometers WR 1-WR 16, and display tables B1-B16 respectively connected in series with the lines of the direct current output interfaces for displaying the current set value in real time when outputting a dynamic response in a DC 4-20 mA range to the direct current output interfaces.

The digital quantity signal unit is divided into a digital quantity signal output unit and a digital quantity signal input unit, and comprises 16 groups of digital signal output interfaces and 16 groups of digital signal input interfaces respectively.

As shown in fig. 6 and 12, the digital quantity signal output unit includes duplicate two-position switches K1-K16, two contacts on one side of the duplicate two-position switches K1-K16 are respectively connected to the power supply bus and the ground, and the other side is connected to the digital signal output interface.

As shown in fig. 7 and 13, the digital quantity signal input unit includes a double-position switch, and solid-state relays Km 1-Km 16 for controlling the double-position switch to open and close, wherein a coil of each solid-state relay is externally connected to the digital signal input interface to form a loop, two contacts on one side of the double-position switch are respectively connected to a power supply bus and a ground wire, and the other side of the double-position switch is respectively connected to 1A 'to 16A' and 1B 'to 16B' so that the PEMFC engine transmits digital signals back to the test system.

As shown in fig. 8, the programmable intelligent communication gateway, the analog signal unit, and the digital signal unit are inherited as a set including 2-way CAN bus, 2-way 485, 2-way 232, 2-way ethernet, 16 sets of dc output interfaces, 16 sets of dc input interfaces, 16 sets of digital output interfaces, and 16 sets of digital input interfaces, and are inherited as an extended interface panel.

As shown in fig. 9, the connection interface is composed of a plug 2, a wire 3 and a probe 4, wherein one end of the wire is connected with the plug 2 which can be inserted into the analog signal output interface or the digital signal output interface, and the other end is connected with a pin 4 which is used for inserting into the contact point of each interface of the PEMFC engine.

The driving process of the extended interface to the PEMFC engine is as follows:

the method comprises the steps of detecting the signal type, the signal flow direction and the signal quantity of an internal contact of one interface of the PEMFC engine in advance;

if one of the contacts in the interface is detected to be used for inputting an analog signal, such as a direct current voltage, and obtaining a direct current voltage value required by the contact, inserting a plug of a connection interface shown in fig. 9 into a direct current voltage output interface of the analog quantity signal unit, and after adjusting that the direct current voltage output by the direct current voltage output interface is consistent with the direct current voltage value required by the contact through a voltage adjustment potentiometer, inserting a probe 4 of the connection interface into a PEMFC engine interface to be communicated with the contact;

if one of the contacts in the interface is detected to be used for inputting a digital signal and acquiring the digital signal quantity of the contact, inserting the plug 2 of the connection interface into a digital signal output interface of a digital quantity signal unit, adjusting the digital signal quantity output by the digital signal output interface to be consistent with the digital signal quantity of the contact, and then inserting a probe of the connection interface into a PEMFC motor interface to be communicated with the contact;

if one of the contacts in the interface is detected to be used for outputting an analog signal, the plug 2 of the connection interface is directly inserted into the analog signal input interface of the analog quantity signal unit, and the probe 4 of the connection interface is inserted into the PEMFC engine interface to be communicated with the contact;

if one of the contacts in the interface is detected to be used for outputting a digital signal, the plug 2 of the coupling interface is directly inserted into a digital signal input interface of a digital quantity signal unit, and the probe 4 of the coupling interface is inserted into a PEMFC engine interface to be communicated with the contact;

and in the same way, the probes 4 of the connection interface are communicated with all the contacts of the PEMFC engine interface, so that the PEMFC engine test system drives the PEMFC engine interface.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made thereto within the knowledge of those skilled in the art.

Claims

1. An extended interface of a PEMFC engine test system, comprising a tuning circuit board having a ground and a bus for providing a DC voltage, characterized by further comprising:

2. The PEMFC engine test system expansion interface of claim 1, wherein the analog signal unit, a voltage limiting resistor connected to the bus, a voltage adjusting potentiometer connected in series to the voltage limiting resistor, and an electrical quantity transmitting module mounted on the setting circuit board and connected in series to the voltage adjusting potentiometer, the electrical quantity transmitting module is further electrically connected to the analog signal output interface, the voltage adjusting potentiometer provides an adjustable dc voltage for the electrical quantity transmitting module input, and provides a dynamic response in a dc voltage range or a dc current range to the analog signal output interface through a linear mapping of primary/secondary side isolation electrical parameters.

3. The PEMFC engine test system extended interface of claim 2, wherein the analog signal output interface is a display table connected in parallel to the line for displaying a current voltage set value in real time when outputting a dynamic response in a dc voltage range to the dc voltage output interface.

4. An extended interface of a PEMFC engine test system according to claim 2, wherein when the analog signal output interface is a dc current output interface for outputting a dynamic response within a dc current range, a current set value of current is displayed in real time by a display meter connected in series on a line.

5. The PEMFC engine test system of any one of claims 2-4, wherein the digital signal unit is divided into a digital signal output unit and a digital signal input unit, the digital signal input unit is configured to receive a digital signal transmitted back from the PEMFC engine, and the digital signal output unit is configured to output a digital signal transmitted by the PEMFC test system.

6. The extended interface of PEMFC engine test system according to claim 5, wherein said digital signal output unit comprises a double position switch, said double position switch having two contacts on one side connected to power bus and ground respectively and the other side connected to said digital signal output interface.

7. The extended interface of the PEMFC engine test system of claim 5, wherein the digital signal input unit includes a duplicate dual-position switch, a solid-state relay for controlling the on/off of the duplicate dual-position switch, a coil of the solid-state relay externally connecting to the digital signal input interface forms a loop, two contacts of one side of the duplicate dual-position switch are respectively connected to a power supply bus and a ground, and the other side of the duplicate dual-position switch is connected to the PEMFC engine test system to transmit digital signals back thereto.

8. An extended interface of a PEMFC engine test system according to claim 6 or 7, further comprising at least two sets of analog signal input interfaces for receiving analog signals generated from the PEMFC engine and transmitting the analog signals back to the PEMFC engine test system.

9. The PEMFC engine test system of claim 8, wherein the analog signal output interface, the digital signal input interface, and the analog signal input interface are all 15-30 groups.