CN221226281U - Safety protection device and testing device for hydrogen fuel cell test - Google Patents
Safety protection device and testing device for hydrogen fuel cell test Download PDFInfo
- Publication number
- CN221226281U CN221226281U CN202322330471.6U CN202322330471U CN221226281U CN 221226281 U CN221226281 U CN 221226281U CN 202322330471 U CN202322330471 U CN 202322330471U CN 221226281 U CN221226281 U CN 221226281U
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- scram
- fuel cell
- hydrogen fuel
- electronic load
- loop
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- 238000012360 testing method Methods 0.000 title claims abstract description 72
- 239000000446 fuel Substances 0.000 title claims abstract description 45
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 39
- 239000001257 hydrogen Substances 0.000 title claims abstract description 39
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052802 copper Inorganic materials 0.000 claims abstract description 57
- 239000010949 copper Substances 0.000 claims abstract description 57
- 239000004519 grease Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 210000001331 nose Anatomy 0.000 description 8
- 230000002159 abnormal effect Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model relates to a safety protection device and a testing device for testing a hydrogen fuel cell, wherein copper bars are respectively arranged on a positive current collecting plate and a negative current collecting plate of the hydrogen fuel cell, the safety protection device comprises a test table scram loop and an electronic load scram loop, the safety protection device also comprises a normally closed contact temperature control switch which is arranged on the copper bars and used for controlling the test table scram loop and the electronic load scram loop, and the temperature control switch is simultaneously connected with the test table scram loop and the electronic load scram loop. When the temperature sensed by the temperature control switch exceeds the working temperature, the temperature control switch is turned into an open circuit from the passage, and the operation of the test bench and the electronic load is automatically interrupted at the moment, so that the equipment is in a shutdown state; after the copper bar is cooled, the interior of the temperature control switch is changed into a passage again, and the equipment can be restored to a standby state.
Description
Technical Field
The utility model relates to the technical field of fuel cell detection, in particular to a safety protection device and a testing device for testing a hydrogen fuel cell.
Background
As a new green power source, a fuel cell engine is becoming one of the important developments of vehicle-mounted engines due to its excellent characteristics such as high efficiency and low emission. The fuel cell engine is based on the output of the load, and has good control for the whole vehicle; meanwhile, the energy output of the fuel cell engine is electric energy, so that the transmission and speed regulation structure of the traditional automobile is simplified. Although fuel cell engines have numerous advantages over internal combustion engines, fuel cell engines have become the mainstay of automotive engines instead of internal combustion engines, and many other problems need to be solved.
In the test process of the hydrogen fuel cell, an electronic load is required to consume the electric energy generated by the hydrogen fuel cell. Wherein the anode and the cathode of the hydrogen fuel cell and the anode and the cathode of the electronic load are required to be connected by a cable. According to different test tasks, the corresponding hydrogen fuel cells need to be disassembled and assembled on the test bench, if the improper installation of the cable conductor can cause poor contact of a copper nose of the cable conductor, a copper bar connected with the positive electrode current collecting plate and a negative electrode current collecting plate of the hydrogen fuel cells, abnormal temperature rise of the copper nose, the copper bar connected with the positive electrode current collecting plate and the negative electrode current collecting plate can be caused in the test process, the cable conductor is scalded, and even safety accidents such as fire of an insulating layer of a cable sheath can occur.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provide a safety protection device, when the temperature of a copper nose of a cable, a positive electrode current collecting plate and a negative electrode current collecting plate for connecting a copper bar and a hydrogen fuel cell is too high due to abnormal installation of the cable, the emergency stop of a test bench and an electronic load is triggered, and the test is stopped.
The aim of the utility model can be achieved by the following technical scheme:
As a first aspect of the present utility model, there is provided a safety protection device for testing a hydrogen fuel cell, wherein copper bars are respectively arranged on a positive current collecting plate and a negative current collecting plate of the hydrogen fuel cell, and the safety protection device comprises a test bed scram loop and an electronic load scram loop;
The safety protection device further comprises a normally closed contact temperature control switch which is arranged on the copper bar and used for controlling the test bed scram loop and the electronic load scram loop, and the temperature control switch is simultaneously connected with the test bed scram loop and the electronic load scram loop.
Further, two temperature control switches are arranged, and the two temperature control switches are respectively arranged on the positive electrode copper bar and the negative electrode copper bar.
Further, the temperature sensing surface of the temperature control switch is tightly attached to the surface of the copper bar.
Further, a heat conducting medium is arranged between the temperature sensing surface of the temperature control switch and the copper bar.
Further, the heat conducting material is heat conducting silicone grease.
Further, a test board emergency stop button switch for manually controlling the emergency stop of the test board loop is arranged in the test board emergency stop loop.
Further, an electronic load scram button switch for manually controlling scram of the electronic load circuit is arranged in the electronic load scram circuit.
Further, the temperature control switch is connected with the test bed scram button switch and the electronic load scram button switch to form a series circuit.
Furthermore, the test board emergency stop button switch and the electronic load emergency stop button switch are normally closed contact switches.
As a second aspect of the present utility model, there is provided a test device for a hydrogen fuel cell, comprising an electronic load, wherein positive and negative electrode current collecting plates of the hydrogen fuel cell are respectively provided with a positive electrode copper bar and a negative electrode copper bar, and the positive and negative electrode copper bars are connected with positive and negative electrodes of the electronic load through cables; the test device is provided with a safety device as described above.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the temperature control switch for controlling the test bench scram and the electronic load scram loop is arranged at the copper bar, when the temperature of the copper nose of the cable and the temperature of the anode current collecting plate and the cathode current collecting plate for connecting the copper bar and the hydrogen fuel cell are too high due to abnormal installation of the cable, the normally closed contact point inside the temperature control switch is disconnected, the test bench and the electronic load scram are triggered, the test is stopped, and safety accidents such as fire disaster and the like caused by the too high temperature are avoided.
Drawings
FIG. 1 is a schematic diagram of a safety device for testing hydrogen fuel cells according to the present utility model;
The reference numerals in the figures indicate: 1. the test bench scram button switch, 2.1, cable anodal copper nose, 2.2, cable negative pole copper nose, 3.1, anodal connection cable conductor, 3.2, negative pole connection cable conductor, 4.1, electron load anodal wiring end, 4.2, electron load negative pole wiring end, 5, electron load scram button switch, 6.1, anodal temperature detect switch, 6.2, negative pole temperature detect switch, 7.1, anodal copper bar, 7.2, negative pole copper bar, 8.1, hydrogen fuel cell anodal current collecting plate, 8.2, hydrogen fuel cell negative pole current collecting plate.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.
Example 1
As a first embodiment of the present utility model, the present embodiment provides a safety device for testing a hydrogen fuel cell, and fig. 1 shows an electrical connection mode of the safety device.
Copper bars are respectively fixed on positive and negative current collecting plates of the hydrogen fuel cell through copper bolts.
Temperature control switches are respectively arranged on the two copper bars, and a heat conducting medium is arranged between the temperature sensing surfaces of the temperature control switches and the copper bars; specifically, before installation, heat conduction silicone grease is smeared on the temperature sensing surface of the temperature control switch and then is tightly adhered to and fully contacted with the surface of the copper bar.
The temperature control switch and a test bed scram button switch in the test bed scram loop and an electronic load scram button switch in the electronic load scram loop form a series circuit respectively; the temperature control switch, the test bed scram button switch 1 and the electronic load scram button switch 5 are both normally closed contacts.
In the testing process, if a tester finds that the equipment has an abnormal condition, the tester can manually press the emergency stop button switch 1 of the test bench or the emergency stop button switch 5 of the electronic load, and the operation of the test bench and the electronic load can be simultaneously interrupted at the moment because the inside of the emergency stop button switch is changed into an open circuit from a passage, so that the equipment is in a shutdown state, after the abnormal problem is solved, the equipment can be restored to a standby state after the emergency stop button is reset, and the protection of the electronic load and a tested piece is realized.
When abnormal conditions occur, such as overhigh contact resistance caused by the fact that a copper nose and a copper bar of a cable or a current collecting plate of a hydrogen fuel cell are not screwed up, the temperature of the copper bar exceeds the working temperature of a temperature control switch due to the fact that the continuous temperature of a contact surface is increased under high current, the internal contact of the temperature control switch is changed into an open circuit from a passage due to the fact that the deformation amount of the bimetallic strip in the temperature control switch is different after being heated, the operation of a test board and an electronic load can be automatically interrupted at the moment, the equipment is in a shutdown state, the bimetallic strip in the temperature control switch is deformed in a recovery mode after the copper bar 7 is cooled, the internal contact of the temperature control switch is changed into the passage again, and the equipment can be restored to a standby state.
Example 2
As a second implementation manner of the present utility model, the present embodiment further provides a hydrogen fuel cell testing device using the safety protection device described in the above embodiment, which includes an electronic load, a test stand scram circuit, an electronic load scram circuit, and a temperature control switch disposed on a copper bar.
Fixing a copper bar on a positive electrode current collecting plate and a negative electrode current collecting plate of the hydrogen fuel cell through copper bolts;
Copper bolts are respectively used for cable copper noses at two ends of a cable, one end of the cable is fixed on the copper bar, and the other end of the cable is fixed on the positive electrode wiring terminal and the negative electrode wiring terminal of the electronic load;
The copper bars are respectively provided with a temperature control switch, and before installation, the temperature sensing surface of the temperature control switch is coated with heat conduction silicone grease and then is tightly adhered to and fully contacted with the surface of the copper bars;
The temperature control switch and a test bed scram button switch in the test bed scram loop and an electronic load scram button switch in the electronic load scram loop form a series circuit respectively; the temperature control switch, the test bed scram button switch 1 and the electronic load scram button switch 5 are both normally closed contacts.
When the performance of the hydrogen fuel cell is detected by the testing device, the temperature control switch is fixed on a copper bar used for testing the hydrogen fuel cell. The copper bars are respectively connected with the anode and cathode current collecting plates of the hydrogen fuel cell and the test cable of the electronic load. When the copper bar is not fastened with the current collecting plate or the test cable, the temperature of the copper bar can be abnormally increased in the test process, when the temperature sensed by the temperature control switch exceeds the working temperature of the temperature control switch, the bimetallic strip in the switch deforms, the switch is turned into an open circuit from a passage, and the operation of the test board and the electronic load can be automatically interrupted at the moment, so that the equipment is in a shutdown state. After the copper bar is cooled, the interior of the temperature control switch is changed into a passage again, and the equipment can be restored to a standby state.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. The safety protection device for the hydrogen fuel cell test comprises a test bench scram loop and an electronic load scram loop, wherein copper bars are respectively arranged on a positive current collecting plate and a negative current collecting plate of the hydrogen fuel cell;
The safety protection device is characterized by further comprising a normally closed contact temperature control switch which is arranged on the copper bar and used for controlling the test bed scram loop and the electronic load scram loop, and the temperature control switch is simultaneously connected with the test bed scram loop and the electronic load scram loop.
2. The safety protection device for testing a hydrogen fuel cell according to claim 1, wherein two temperature-controlled switches are provided, and the two temperature-controlled switches are respectively provided on the positive copper bar (7.1) and the negative copper bar (7.2).
3. The safety protection device for testing a hydrogen fuel cell according to claim 1 or 2, wherein the temperature sensing surface of the temperature control switch is closely attached to the surface of the copper bar.
4. A safety protection device for testing a hydrogen fuel cell according to claim 3, wherein a heat conducting medium is arranged between the temperature sensing surface of the temperature control switch and the copper bar.
5. The hydrogen fuel cell testing safety device according to claim 4, wherein the heat conducting medium is a heat conducting silicone grease.
6. A safety device for hydrogen fuel cell testing according to claim 1 or 2, characterized in that a test bench emergency stop button switch (1) for manually controlling the emergency stop of the test bench is provided in the test bench emergency stop circuit.
7. The safety device for hydrogen fuel cell testing according to claim 6, wherein an electronic load scram button switch (5) for manually controlling scram of the electronic load circuit is provided in the electronic load scram circuit.
8. The safety protection device for hydrogen fuel cell testing according to claim 7, wherein the temperature control switch is connected with the test stand scram button switch (1) and the electronic load scram button switch (5) to form a series circuit.
9. The safety protection device for hydrogen fuel cell test according to claim 8, wherein the test stand scram button switch (1) and the electronic load scram button switch (5) are normally closed contact switches.
10. The hydrogen fuel cell testing device comprises an electronic load, wherein positive copper bars (7.1) and negative copper bars (7.2) are respectively arranged on a positive current collecting plate and a negative current collecting plate of a cell of the hydrogen fuel cell, and the positive copper bars and the negative copper bars are connected with the positive electrode and the negative electrode of the electronic load through cables; characterized in that the test device is provided with a safety device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330471.6U CN221226281U (en) | 2023-08-29 | 2023-08-29 | Safety protection device and testing device for hydrogen fuel cell test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322330471.6U CN221226281U (en) | 2023-08-29 | 2023-08-29 | Safety protection device and testing device for hydrogen fuel cell test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221226281U true CN221226281U (en) | 2024-06-25 |
Family
ID=91549388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322330471.6U Active CN221226281U (en) | 2023-08-29 | 2023-08-29 | Safety protection device and testing device for hydrogen fuel cell test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221226281U (en) |
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2023
- 2023-08-29 CN CN202322330471.6U patent/CN221226281U/en active Active
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