Method for preventing misconnection of diaphragm voltage acquisition of hydrogen fuel cell

Abstract

The invention discloses a hydrogen fuel cell diaphragm voltage acquisition misconnection prevention method, which aims at a voltage acquisition structure such as an adapter plate and a wire harness, a plurality of butt joint ports used for being in butt joint with a diaphragm voltage port of a hydrogen fuel cell are arranged on the butt joint surface of the adapter plate side by side, and each butt joint port is switched through the wire harness; convex and concave structures are formed at the edges of the adapter plates, and when the adjacent adapter plates are correctly spliced, seamless splicing is realized through the convex and concave structures at the edges. According to the invention, the seamlessly spliced convex and concave structures are formed at the edge of the adapter plate, so that the middle of the adapter plate is free from hollowing, the one-to-one correspondence connection between the adapter plate and the diaphragm voltage interface is realized, the man-made failure rate of the diaphragm voltage acquisition system is reduced, the troubleshooting time is shortened, and the maintenance cost and time are saved.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen fuel cell diaphragm voltage inspection in the new energy industry, and in particular to a diaphragm voltage acquisition and misconnection prevention method. Background Art

[0002] Figure 1 The diagram is a schematic diagram of the hydrogen fuel cell membrane voltage inspection. Figure 1 As shown, the diaphragm voltage interfaces of the fuel cell stack are densely arranged side by side. For example, a 45KW stack of Guohong Hydrogen Energy has 180 diaphragms. The spacing between adjacent diaphragm voltage interfaces is less than 2.54mm, and the diaphragms are cascaded in series. The diaphragm voltage is usually collected by an adapter plate. The adapter plate has a block structure, and its docking surface has multiple docking interfaces for docking with the diaphragm voltage interface side by side. Each docking interface of the adapter plate is led out through a wiring harness, and then plugged into the corresponding hole position of the diaphragm voltage collector terminal. These voltages are sampled by the collector AD to form a coded data stream, which is transmitted upward in real time according to the communication protocol. The fuel cell monitoring system receives the collected information, displays the value of each diaphragm voltage on the control screen, calculates the value, and comprehensively judges the working status of the fuel cell. This is Figure 1 The working process of the diaphragm voltage inspection system.

[0003] The above voltage collection method has the following problems:

[0004] 1) The wiring harness is easy to be misconnected: Although the two ends of the current system wiring harness are respectively covered with number tubes, it is still easy to make mistakes, such as 6 and 9 wire numbers, 18 and 81 wire numbers, 161 and 191 wire numbers, etc. are easy to confuse;

[0005] 2) Missing connection is easy to occur at the adapter board end: The spacing between the diaphragm voltage interfaces is small. After the adapter board is connected, it is difficult to distinguish whether it is a missing connection problem or a normal gap between the two adapter boards. Summary of the invention

[0006] The purpose of the present invention is to provide a method for preventing misconnection of a hydrogen fuel cell diaphragm voltage acquisition system, so as to reduce the human failure rate of the diaphragm voltage acquisition system, shorten the troubleshooting time, and save maintenance cost and time.

[0007] The object of the present invention is achieved through the following technical solutions: a method for preventing wrong connection of hydrogen fuel cell membrane voltage collection, which is aimed at a voltage collection structure such as an adapter plate and a wiring harness, and a plurality of docking interfaces for docking with the membrane voltage interface of the hydrogen fuel cell are arranged side by side on the docking surface of the adapter plate, and each of the docking interfaces is respectively connected through the wiring harness; characterized in that

[0008] Convex and concave structures are formed on the edge of the adapter plate. When adjacent adapter plates are correctly plugged in, the convex and concave structures on the edges are seamlessly spliced ​​to ensure that there is no gap in the middle of the adapter plate, thereby achieving a one-to-one correspondence connection between the adapter plate and the diaphragm voltage interface.

[0009] Preferably, the concave and convex structures on each adapter plate are not completely the same, so that the front and rear adapter plates can be spliced ​​only in a specific arrangement.

[0010] As an improvement plan: the wiring harnesses are grouped according to different adapter plates, and the color difference between the front and rear wiring harness groups is gradual, that is, the rear wiring harness of the front wiring harness group adopts a color that is different from its overall color (the color of most of the wiring harnesses) but consistent with the overall color of the rear wiring harness group. In this way, the front and rear wiring harness groups can be matched, which is conducive to further reducing the mis-insertion error rate.

[0011] Each of the wiring harness groups is provided with a direction indicator arrow at least at one end away from the adapter plate, and the direction indicator arrow is composed of a pattern or color block that continuously changes from small to large and is formed by splicing patterns or color blocks on each wiring harness arranged in sequence in the group. This structure can distinguish the order of the wiring harnesses in each wiring harness group, and reduce mis-insertion caused by entanglement of the wiring harnesses.

[0012] Beneficial effects:

[0013] 1) The present invention forms seamlessly spliced ​​convex and concave structures on the edge of the adapter plate to ensure that there is no gap in the middle of the adapter plate, thereby achieving a one-to-one correspondence connection between the adapter plate and the diaphragm voltage interface, reducing the human failure rate of the diaphragm voltage acquisition system, reducing troubleshooting time, and saving maintenance costs and time;

[0014] 2) The present invention enhances the visual distinction and recognition of the front and rear stage wiring harnesses and the wiring harnesses within the group through the technical means of gradual color difference between the front and rear stage wiring harness groups and setting direction identification arrows, gradually reduces the connection misplugging rate, and further reduces the human accident rate of diaphragm voltage collection, thereby further reducing the troubleshooting time and saving maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a hydrogen fuel cell membrane voltage inspection system;

[0016] Figure 2 It is a schematic diagram of the processing method of the gradual color difference between levels and the direction indicator arrow;

[0017] Figure 3 This is an example of the design of the concave and convex structure on the edge of the adapter plate. DETAILED DESCRIPTION

[0018] The present invention relates to a method for preventing wrong connection of hydrogen fuel cell membrane voltage acquisition, and the invention is further described in detail below in conjunction with specific implementation methods.

[0019] against Figure 1 In this diaphragm voltage acquisition system, in order to avoid the leakage problem in the middle of the adapter plate, such as Figure 3 As shown, the present invention forms convex and concave structures on the edge of the adapter plate, so that when adjacent adapter plates are correctly plugged in, the convex and concave structures on the edge can achieve seamless splicing, ensuring that there is no gap in the middle of the adapter plate, achieving a one-to-one correspondence connection with the diaphragm voltage interface, reducing the human failure rate of the diaphragm voltage acquisition system, reducing troubleshooting time, and saving maintenance costs and time. In addition, Figure 3 The convex and concave structures of the edges of each adapter plate are not completely the same, so that they can only be spliced ​​with specific adapter plates, thereby limiting their arrangement order.

[0020] Figure 2 The figure is a schematic diagram of the processing method of the color difference progression between levels and the direction arrow. As shown in the figure, the wire harnesses are grouped according to different adapter plates, and each group has different colors. However, the last wire harness of the previous level wire harness group uses the same color as the next level wire harness. In this way, the previous and subsequent wire harness groups are matched, which is conducive to further reducing the mis-insertion rate. In addition, each wire harness group is provided with a direction arrow at least at one end away from the adapter plate. The direction arrow is composed of a pattern or color block that continuously changes from small to large, which is spliced ​​from the pattern or color block on each wire harness arranged in sequence in the group. Through this structure, the order of the wire harnesses in each wire harness group can be distinguished, reducing mis-insertion caused by entanglement of the wire harnesses.

[0021] The present invention can enhance the visual distinction and recognition of the front and rear stage and the harnesses within the group through the technical means of gradual color difference between the front and rear stage harness groups and setting direction identification arrows, further reduce the human accident rate of diaphragm voltage collection, thereby further reducing troubleshooting time and saving maintenance costs and time.

[0022] In addition to the above characteristics, the method of the present invention also has the advantages of being simple, easy to implement and easy to realize.

Claims

1. A method for preventing wrong connection of hydrogen fuel cell membrane voltage collection, which is aimed at a voltage collection structure such as an adapter plate and a wiring harness, wherein a plurality of docking interfaces for docking with the membrane voltage interface of the hydrogen fuel cell are arranged side by side on the docking surface of the adapter plate, and each of the docking interfaces is respectively connected through the wiring harness; characterized in that: Convex and concave structures are formed on the edge of the adapter plate, and when adjacent adapter plates are correctly plugged in, they are seamlessly spliced ​​through the convex and concave structures on the edges.

2. The method for preventing wrong connection according to claim 1, characterized in that: The concave and convex structures on each adapter plate are not completely the same, so that the front and rear adapter plates can only be spliced ​​in a specific arrangement.

3. The method for preventing wrong connection according to claim 1 or 2, characterized in that: The wiring harnesses are grouped according to different adapter plates, and the color difference between the front and rear wiring harness groups is gradual, that is, the rear wiring harness of the front wiring harness group adopts a color that is different from its overall color but consistent with the overall color of the rear wiring harness group.

4. The method for preventing wrong connection according to claim 3, characterized in that: Each of the wiring harness groups is provided with a direction indicator arrow at least at one end away from the adapter plate, and the direction indicator arrow is composed of a pattern or color block that changes continuously from small to large and is formed by splicing patterns or color blocks on each wiring harness arranged in sequence in the group.

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