CN217006903U - Fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment - Google Patents
Fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment Download PDFInfo
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- CN217006903U CN217006903U CN202123290588.3U CN202123290588U CN217006903U CN 217006903 U CN217006903 U CN 217006903U CN 202123290588 U CN202123290588 U CN 202123290588U CN 217006903 U CN217006903 U CN 217006903U
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Abstract
The utility model discloses a fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection device which comprises a constant temperature water tank, a test box and an acid boiling box, wherein two water tanks are arranged at the top end of the constant temperature water tank, the test box and the acid boiling box are respectively arranged in the two water tanks, electrode plate hanging frames are clamped in the test box and the acid boiling box, and a coated bipolar plate is arranged in the electrode plate hanging frames. According to the corrosion resistance acid boiling inspection equipment, the corrosion resistance detection of the plated flat plate sample piece is replaced by the plated bipolar plate, so that the corrosion resistance of the bipolar plate coating is effectively inspected conveniently, and the inspection effect is improved; and use through sour boiling case cooperation thermostatted water tank, the corrosion resistance of coated bipolar plate under fuel cell operating condition environment of true simulation detects, and it is more accurate to detect the structure, and the reliability is stronger, and tests the coated electrode board through sour boiling groove and sulphuric acid, replaces traditional durable galvanic pile cycle test coating corrosion resistance, can practice thrift the experiment cost.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to sour boiling inspection equipment for corrosion resistance of a metal bipolar plate coating of a fuel cell.
Background
In the prior art, the fuel cell has the advantages of high energy conversion efficiency, high power density, low noise, safety, environmental protection, wide application range and the like, is more and more emphasized by governments and research institutions of various countries, and is considered as a clean energy source in the 21 st century.
The Proton Exchange Membrane Fuel Cell (PEMFC) has the advantages of zero pollution, high conversion efficiency (60% -70%), high specific power (more than or equal to 3.0kW/L), low noise, quick start, long endurance and the like, so the PEMFC is considered to be an ideal device such as a vehicle-mounted power supply, a distributed power station, a mobile power supply and the like, and along with the application of the PEMFC in transportation tools such as forklifts, logistics vehicles, urban public transportation, intercity light rails and the like, the PEMFC is used as a new-generation technical energy and is gradually permeated into all industries of the society, however, the cost of a fuel cell automobile is high, the service life is short, and the problem of fuel distribution severely restricts the wide commercialization of the fuel cell automobile.
The metal bipolar plate has the advantages of excellent electric conductivity, heat conductivity, machinability, compactness, high strength, good gas barrier property and the like, can provide good power density and low-temperature (-40 ℃) start guarantee for automobile application, is suitable for mass low-cost production, and has high volume specific power and specific energy of the battery. However, stainless steel bipolar plates tend to form passive films in the fuel cell environment leading to reduced cell performance; in addition, during long-term battery operation, stainless steel bipolar plates are susceptible to corrosion, and the corrosion products thereof are susceptible to catalyst poisoning, thereby resulting in a substantial reduction in battery performance. Therefore, stainless steel bipolar plates must be subjected to surface treatment or modification to meet the use performance, and the carbon-based nano composite conductive films are mainly prepared on two sides of the metal bipolar plates by using a vacuum ion plating technology, but most of the processes are immature at present and are produced in batchesIn the process, only the corrosion resistance detection of a coated flat plate sample piece can be utilized (refer to the USDOE standard test, the size of the sample is 2 x 2cm, and the test area is 1cm2Circular area in size) to screen the corrosion resistance of the surface of the coated plate.
Because the vacuum ion plating space is larger and the number of the bipolar plates is larger, the corrosion resistance effect of the surface coating of the bipolar plate cannot be truly reflected by the corrosion resistance detection of the plating flat plate sample piece.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
fuel cell metal bipolar plate coating corrosion resistance sour check out test set that boils, including thermostated water tank, test box and sour case of boiling, two basins have been seted up on thermostated water tank's top, test box and sour case of boiling are installed respectively inside two basins, the equal joint in inside of test box and sour case of boiling has the plate electrode stores pylon, the internally mounted of plate electrode stores pylon has coated film bipolar plate, thermostated water tank's one end is provided with outside DC power supply and four-channel workstation respectively, one side inner wall fixed mounting of test box has the titanium foil board, just the inside of test box is provided with silver-silver chloride reference electrode.
As a still further scheme of the utility model: the inside equidistance fixedly connected with of constant temperature water tank's basin a plurality of supporting shoes, just constant temperature water tank's one end fixed mounting has the heating control body, one side fixed connection inlet tube on constant temperature water tank top, just the positive bottom fixedly connected with drain pipe of constant temperature water tank.
As a still further scheme of the utility model: the inside one end fixed mounting of test box has first support, and other end fixed mounting has the second support, one side inner wall fixedly connected with mounting bracket of test box, titanium foil board fixed mounting is in the inside of mounting bracket.
As a still further scheme of the utility model: the front of the first support is provided with a mounting groove, a connector is fixedly mounted inside the mounting groove, and the silver chloride reference electrode is fixedly mounted inside the connector.
As a still further scheme of the utility model: a plurality of first locating grooves are formed in the two side sides of the front face of the first support, a first sliding rod is slidably mounted on the wall of the back face of each first locating groove, and a first bottom plate is fixedly connected to the bottom end of each first sliding rod.
As a still further scheme of the utility model: the inside both ends symmetry of sour case of cooking is provided with the third support, a plurality of third constant head tanks have been seted up to the front equidistance of third support, the back cell wall slidable mounting of third constant head tank has the third slide bar, the bottom fixed connection third bottom plate of third slide bar.
As a still further scheme of the utility model: the plate electrode stores pylon joint is in the inside of first constant head tank or third constant head tank, the plate electrode draw-in groove has been seted up on the top of plate electrode stores pylon, a plurality of drain holes have been seted up to the bottom cell wall equidistance of plate electrode draw-in groove.
As a still further scheme of the utility model: the four-channel workstation is electrically connected with the coated bipolar plate, the titanium foil plate and the silver-silver chloride reference electrode respectively, and the external direct current power supply is electrically connected with the coated bipolar plate.
Compared with the prior art, the utility model provides the fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment, which has the following beneficial effects:
1. the corrosion resistance sour boiling inspection equipment replaces the corrosion resistance detection of the coated flat plate sample piece by the coated bipolar plate, facilitates the effective inspection of the corrosion resistance of the coating of the bipolar plate and improves the inspection effect.
2. This corrosion resistance sour check out test set that boils, through sour case cooperation thermostatted water tank use of boiling, the corrosion resistance of true simulation coated bipolar plate under fuel cell operating mode environment detects, and it is more accurate to detect the structure, and the reliability is stronger.
3. This corrosion resistance sour boiling check out test set tests the coating electrode board through sour boiling groove and sulphuric acid, replaces traditional durable galvanic pile cycle test coating corrosion resistance, can practice thrift the experiment cost.
The parts which are not involved in the device are the same as or can be realized by adopting the prior art, and the device has the advantages of simple structure and convenient operation.
Drawings
FIG. 1 is a schematic structural view of the integral assembly of the present invention;
FIG. 2 is a schematic structural view of a constant temperature water tank according to the present invention;
FIG. 3 is a schematic view of the structure of the test box of the present invention;
FIG. 4 is a schematic structural view of a first bracket according to the present invention;
FIG. 5 is a schematic view of the acid cooking chamber of the present invention;
FIG. 6 is a schematic structural view of a third stent of the present invention;
fig. 7 is a schematic structural view of an electrode plate hanger according to the present invention.
In the figure: 1. a constant temperature water tank; 11. a support block; 12. heating the control body; 13. a water inlet pipe; 14. a drain pipe; 2. a test box; 21. a first bracket; 211. mounting grooves; 212. a connector; 213. a silver chloride reference electrode; 214. a first positioning groove; 215. a first base plate; 216. a first slide bar; 22. a second bracket; 23. a mounting frame; 24. a titanium foil plate; 3. acid cooking box; 31. a third support; 311. a third positioning groove; 312. a third base plate; 313. a third slide bar; 4. an electrode plate hanger; 41. an electrode plate clamping groove; 42. a drain hole; 5. coating a bipolar plate; 6. an external direct current power supply; 7. a four-channel workstation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The corrosion resistance sour check out test set that boils of fuel cell metal bipolar plate coating, as shown in fig. 1-7, including thermostated water tank 1, test box 2 and sour boiling box 3, two basins have been seted up on thermostated water tank 1's top, two basins link up each other, test box 2 and sour boiling box 3 are installed respectively inside two basins, test box 2 and the equal joint in inside of sour boiling box 3 have plate electrode stores pylon 4, the internally mounted of plate electrode stores pylon 4 has coated film bipolar plate 5, thermostated water tank 1's one end is provided with outside DC power supply 6 and four-channel workstation 7 respectively, four-channel workstation 7 sets up to four-channel electrochemical workstation, outside DC power supply 6 can carry out the apolegamy according to the use needs.
A plurality of supporting blocks 11 are fixedly connected with the interior of the water tank of the constant temperature water tank 1 at equal intervals, the supporting blocks 11 are used for supporting the test box 2 and the acid boiling box 3, the stable installation of the test box and the acid boiling box is maintained, the heating effect of the constant temperature water tank 1 is ensured, and one end of the constant temperature water tank 1 is fixedly provided with a heating control body 12, the heating control body 12 comprises a controller and a heater, the top end of the controller is provided with a temperature setter and a switch, the heating temperature is set by the temperature setter, then the switch is turned on, the controller controls the heater to supply current, the heater heats the water flow in the water tank, one side of the top end of the constant temperature water tank 1 is fixedly connected with a water inlet pipe 13, the water inlet pipe 13 is used for injecting water flow into the water tank, and the bottom of the front surface of the constant temperature water tank 1 is fixedly connected with a drain pipe 14, the drain pipe 14 is used for draining water flow in the water tank, and the drain pipe 14 and the water inlet pipe 13 are in a closed state in a non-working state.
Inside one end fixed mounting of test box 2 has first support 21, and other end fixed mounting has second support 22, first support 21 and the setting of second support 22 symmetry, one side inner wall fixedly connected with mounting bracket 23 of test box 2, mounting bracket 23 sets up to two, the inside fixed mounting of two mounting brackets 23 has titanium foil board 24, titanium foil board 24 sets up to detachable, when titanium foil board 24 has used for a long time or has taken place to damage, can change titanium foil board 24.
The front of first support 21 has seted up mounting groove 211, and the inside fixed mounting of mounting groove 211 has connector 212, and logical groove has been seted up at the positive middle part of connector 212, and the inside fixed mounting of connector 212 has silver-silver chloride reference electrode 213, and the middle part setting of silver-silver chloride reference electrode 213 is leading to inslot portion.
A plurality of first positioning grooves 214 are formed in both sides of the front surface of the first support 21, a first sliding rod 216 is slidably mounted on the back groove wall of the first positioning groove 214, a first bottom plate 215 is fixedly connected to the bottom end of the first sliding rod 216, and the first bottom plate 215 is arranged on the bottom groove wall of the first positioning groove 214; a plurality of second constant head tanks have all been seted up to the both sides side at the second support 22 back, and the positive cell wall slidable mounting of second constant head tank has the second slide bar, and the bottom fixedly connected with second bottom plate of second slide bar, second bottom plate setting are at the bottom cell wall of second constant head tank.
The third support 31 is symmetrically arranged at two ends of the interior of the acid boiling box 3, a plurality of third positioning grooves 311 are equidistantly formed in the front surface of the third support 31, a third sliding rod 313 is slidably mounted on the groove wall of the back surface of the third positioning groove 311, the bottom end of the third sliding rod 313 is fixedly connected with a third bottom plate 312, and the third bottom plate 312 is arranged on the groove wall of the bottom end of the third positioning groove 311.
The electrode plate hanger 4 is clamped inside the first positioning groove 214 or the third positioning groove 311, an electrode plate clamping groove 41 is formed in the top end of the electrode plate hanger 4, the coated bipolar plate 5 is inserted into the electrode plate clamping groove 41, a plurality of liquid guiding holes 42 are formed in the bottom end groove wall of the electrode plate clamping groove 41 at equal intervals, and the liquid guiding holes 42 are used for increasing the contact area between sulfuric acid and the coated electrode plate 5.
The four-channel workstation 7 is electrically connected with the coated bipolar plate 5, the titanium foil plate 24 and the silver-silver chloride reference electrode 213 respectively, and the external direct current power supply 6 is electrically connected with the coated bipolar plate 5.
The working principle is as follows:
the device is assembled as shown in figure 1, and then water flow is introduced into the water tank through the water inlet pipe 13; the coated bipolar plate 5 is taken, the inner and outer outlines of the coated bipolar plate 5 are sealed by epoxy resin, and curing is completed; the coated bipolar plate 5 after the sealing treatment is placed in an electrode plate hanging frame 4 in an acid boiling box 3, the electrode plate hanging frame 4 is clamped in the third positioning groove 311, and a proper amount of sulfuric acid solution with PH 3 is injected; the constant temperature water tank 1 is started, the heating temperature is set to be 80 ℃ through the temperature setter, then the switch is turned on, the controller controls the heater to be electrified, the heater heats the water flow in the water tank to 80 ℃, and the coated bipolar plate is communicated with the external direct current power supply 6; periodically taking out the coated bipolar plate 5 according to the required time of the experiment, checking the appearance change of the coating, recording, putting the coated bipolar plate 5 and the electrode plate hanger 4 into the first positioning groove 214 and the second positioning groove of the test box 2, and injecting a proper amount of sulfuric acid solution with PH 3; and the four-channel workstation 7 is respectively communicated with the coated bipolar plate 5, the titanium foil plate 24 and the silver-silver chloride reference electrode 213 for corrosion current density detection, recording and judgment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. Fuel cell metal bipolar plate coating corrosion resistance sour check out test set that boils, including thermostatted water tank (1), test box (2) and sour case (3) of boiling, its characterized in that: two basins have been seted up on the top of thermostated water tank (1), install respectively inside two basins on test box (2) and sour case (3) of boiling, the equal joint in inside of test box (2) and sour case (3) of boiling has plate electrode stores pylon (4), the internally mounted of plate electrode stores pylon (4) has coating film bipolar plate (5), the one end of thermostated water tank (1) is provided with outside DC power supply (6) and four-channel workstation (7) respectively, one side inner wall fixed mounting of test box (2) has titanium foil board (24), just the inside of test box (2) is provided with silver-silver chloride reference electrode (213).
2. The fuel cell metal bipolar plate coating corrosion resistance acid boiling test equipment of claim 1, wherein: the constant temperature water tank (1) is characterized in that a plurality of supporting blocks (11) are fixedly connected with the inside of a water tank at equal intervals, a heating control body (12) is fixedly mounted at one end of the constant temperature water tank (1), one side of the top end of the constant temperature water tank (1) is fixedly connected with a water inlet pipe (13), and a water outlet pipe (14) is fixedly connected with the front bottom of the constant temperature water tank (1).
3. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 1, characterized in that: the inside one end fixed mounting of test box (2) has first support (21), and other end fixed mounting has second support (22), one side inner wall fixedly connected with mounting bracket (23) of test box (2), titanium foil board (24) fixed mounting is in the inside of mounting bracket (23).
4. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 3, characterized in that: the front surface of the first support (21) is provided with a mounting groove (211), a connecting body (212) is fixedly mounted inside the mounting groove (211), and the silver/silver chloride reference electrode (213) is fixedly mounted inside the connecting body (212).
5. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 4, characterized in that: a plurality of first locating grooves (214) are formed in the two side sides of the front face of the first support (21), a first sliding rod (216) is slidably mounted on the wall of the back face of each first locating groove (214), and a first bottom plate (215) is fixedly connected to the bottom end of each first sliding rod (216).
6. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 1, characterized in that: the inside both ends symmetry of sour case (3) is provided with third support (31), a plurality of third constant head tanks (311) have been seted up to the front equidistance of third support (31), the back cell wall slidable mounting of third constant head tank (311) has third slide bar (313), the bottom fixed connection third bottom plate (312) of third slide bar (313).
7. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 1, characterized in that: the inside at first constant head tank (214) or third constant head tank (311) is connected in electrode plate stores pylon (4), electrode plate draw-in groove (41) have been seted up on the top of electrode plate stores pylon (4), a plurality of drain holes (42) have been seted up to the bottom cell wall equidistance of electrode plate draw-in groove (41).
8. The fuel cell metal bipolar plate coating corrosion resistance acid digestion inspection equipment of claim 1, characterized in that: the four-channel workstation (7) is electrically connected with the coated bipolar plate (5), the titanium foil plate (24) and the silver-silver chloride reference electrode (213) respectively, and the external direct current power supply (6) is electrically connected with the coated bipolar plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290588.3U CN217006903U (en) | 2021-12-25 | 2021-12-25 | Fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290588.3U CN217006903U (en) | 2021-12-25 | 2021-12-25 | Fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217006903U true CN217006903U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123290588.3U Active CN217006903U (en) | 2021-12-25 | 2021-12-25 | Fuel cell metal bipolar plate coating corrosion resistance acid boiling inspection equipment |
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| Country | Link |
|---|---|
| CN (1) | CN217006903U (en) |
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2021
- 2021-12-25 CN CN202123290588.3U patent/CN217006903U/en active Active
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