A fuel cell high and low temperature test device and method

Abstract

The present invention provides a fuel cell high and low temperature testing device and method. The testing device includes an assembly frame, on which a gas inlet and outlet mechanism, a high and low temperature alternating mechanism, and a steam supply mechanism are provided. A blower and an alarm lamp are provided at the top of the assembly frame; the gas inlet and outlet mechanism includes an inlet pipe, a flow controller, a pressure reducing valve, a mixing pipe, and an inlet pipe. In the present invention, the rotation driving member a drives the rotation rod to rotate, drives the rotation ring to rotate, and drives the conductive head away from the straight pipe to cut off the power supply to the conical electric heating pipe and stop heating; drives the fixed sleeve b to move to the straight pipe. At this time, the pipe a is communicated with the straight pipe, and the cold air in the low temperature box flows into the conical electric heating pipe through the pipe a and the straight pipe. The gas in the inlet pipe is introduced into the shell for cooling. The cooled gas is introduced into the fuel cell through the inlet pipe for low temperature testing. The time for switching from high temperature to low temperature state is short, which is convenient for quickly switching the gas from high temperature to low temperature.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell testing, and particularly relates to a high and low temperature testing device and method for fuel cells. Background Art

[0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth generation of power generation technology after hydraulic power generation, thermal power generation, and nuclear power generation. Before the design of a fuel cell, high and low temperature tests are required to verify the reliability of the fuel cell.

[0003] Chinese Patent Application No. 2020222637978 discloses a fuel cell test chamber, including a test chamber body, a water outlet, a telescopic spring, and a support plate. A limiting structure is provided on one side inside the installation groove. The limiting structure includes a handle, an adjusting rod, a limiting baffle, a connecting groove, and a pressing plate. A limiting baffle is fixed on the outer surface of the adjusting rod. A pressing plate is fixed on one side of the adjusting rod, and a handle is fixed on the other side of the adjusting rod. By installing a pressing plate on one side inside the installation groove, the pressing plate directly contacts the battery, can directly contact the battery, and presses and fixes the battery, thereby realizing the limiting and fixing of batteries of different sizes.

[0004] For fuel cell testing, gases (air, hydrogen) need to be introduced. The temperature of the gases (air, hydrogen) has a great influence on the performance of the fuel cell. This test chamber can perform high or low temperature tests on the gases (air, hydrogen). However, the time for the above test chamber to switch from a high temperature state to a low temperature state is relatively long, and it is difficult to achieve rapid switching between high and low temperatures. The fuel cell test conditions are limited. Therefore, we propose a high and low temperature testing device and method for fuel cells. Summary of the Invention

[0005] The purpose of the present invention is to provide a high and low temperature testing device and method for fuel cells in view of the deficiencies of the prior art. By driving the rotating rod to rotate through the rotating drive member a, driving the rotating ring to rotate, and driving the conductive head away from the straight pipe, the conical electric heating tube is powered off to stop heating; driving the fixed sleeve b to move to the straight pipe. At this time, the pipe a is communicated with the straight pipe, and the cold air in the low temperature box flows into the conical electric heating tube through the pipe a and the straight pipe. The gas in the air inlet pipe is introduced into the shell for cooling. The cooled gas is introduced into the fuel cell through the inlet pipe for low temperature testing. The time for switching from high temperature to low temperature state is relatively short, which is convenient for quickly switching the gas from high temperature to low temperature.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fuel cell high and low temperature test device, including an assembly frame, on which a gas inlet and outlet mechanism, a high and low temperature alternating mechanism, and a steam supply mechanism are provided. A fan and an alarm lamp are provided on the top of the assembly frame; the gas inlet and outlet mechanism includes an inlet pipe, a flow controller, a pressure reducing valve, a mixing pipe, and an inlet pipe. The inlet pipe is communicated with the inlet pipe, and the flow controller, the pressure reducing valve, and the mixing pipe are arranged on the inlet pipe. A first pressure sensor and a first temperature sensor are provided on the inlet pipe; the steam supply mechanism is communicated with the mixing pipe; a discharge pipe is arranged in the assembly frame, and a pressure regulating valve, a first radiator, a tail discharge pipe, a second pressure sensor, and a second temperature sensor are provided on the discharge pipe; the high and low temperature alternating mechanism is arranged on the inlet pipe.

[0008] The high and low temperature alternating mechanism includes: a housing, which is installed on the assembly frame; a conical electric heating tube, which is arranged in the housing. Straight tubes are provided at both ends of the conical electric heating tube, and the straight tubes are connected to the housing; two rotating rings are rotatably arranged outside the housing; a fixed sleeve a, which is installed on the rotating ring; a storage box, which is installed on the housing; a storage battery, which is installed on the storage box, and the storage battery is connected to the fixed sleeve a through a wire.

[0009] A fixing plate is installed on the housing, a rotary driving part a is installed on the housing, a rotary rod is installed at the output end of the rotary driving part a, a gear a is installed on the rotary rod, a toothed ring is installed on the rotary ring, and the gear a and the toothed ring are meshed; a receiving cavity is opened in the fixed sleeve a, an elastic connecting part a is arranged in the receiving cavity, and a conductive head is arranged at the free end of the elastic connecting part a.

[0010] A fixed sleeve b is installed on the rotary ring, a low temperature box, an air extraction pump, and a pipeline a are arranged on the assembly frame, and the pipeline a is communicated with the fixed sleeve b; a connecting plate is installed on the housing, a flow groove is opened on the side of the connecting plate, an inlet groove a is opened on the fixed sleeve a, an inlet groove b is opened on the fixed sleeve b, the fixed sleeve a and the storage box are communicated through a communicating pipe, and a cooling groove is opened in the storage box.

[0011] An arc-shaped groove is opened in the connecting plate, an arc-shaped plate is slidably arranged in the arc-shaped groove, a connecting rod is installed on the arc-shaped plate, a baffle is installed on the connecting rod, and an elastic connecting part b is sleeved outside the connecting rod, and the elastic connecting part b is arranged between the arc-shaped groove and the arc-shaped plate.

[0012] The steam supply mechanism includes: a steam generator installed on the assembly frame; a pump installed on the assembly frame; a water tank installed on the assembly frame; a second radiator installed on the assembly frame; a pipe b communicating with the steam generator, the pump, the water tank, and the second radiator; and a filtering component installed in the water tank.

[0013] The filtering component includes: a rotary driving member b installed in the water tank; a rotary disk installed at the output end of the rotary driving member b; a plurality of filter meshes provided on the rotary disk; a flow pipe provided in the water tank; a discharging component provided in the water tank; and a cleaning component provided in the water tank.

[0014] The discharging component includes: a plurality of chutes opened on the rotary disk; sliders slidably arranged in the chutes; an installation groove formed in the slider; the filter mesh arranged in the installation groove; an elastic connecting member c arranged between the chute and the slider; a resisting plate installed on one side of the slider; a rotary driving member c installed in the water tank; a swing arm installed at the output end of the rotary driving member c, a connecting frame installed in the water tank, and a stable groove opened on the connecting frame, with chamfers opened on both sides of the stable groove.

[0015] The cleaning component includes: a linear driving member a installed in the water tank; a moving plate installed on the linear driving member a; a plurality of cleaning needles a provided on the moving plate; a guide rod slidably arranged on the moving plate; a sliding plate installed on the guide rod; a connecting sleeve installed on the sliding plate; a sliding rod installed in the connecting sleeve; a rotary driving member d installed on the moving plate; a rotary shaft installed at the output end of the rotary driving member d; an inclined groove formed in the rotary shaft, and the sliding rod slides in the inclined groove; a plurality of cleaning needles b installed on the sliding plate, and the cleaning needles a and the cleaning needles b are arranged at intervals.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) The present invention drives the rotating rod to rotate by rotating the driving member a, drives the rotating ring to rotate, drives the conductive head to leave the straight tube, and cuts off the power to the conical electric heating tube to stop heating; drives the fixed sleeve b to move to the straight tube, at which time the pipeline a is connected with the straight tube, and the cold air in the low-temperature box flows into the conical electric heating tube through the pipeline a and the straight tube, and the gas in the air intake pipe is passed into the shell for cooling. The cooled gas is passed into the fuel cell through the inlet pipe for low-temperature testing. The time for switching from high temperature to low temperature is short, which is convenient for quickly switching the gas from high temperature to low temperature.

[0018] (2) The cold air in the low-temperature box of the present invention enters the fixed sleeve b through the pipe a, enters the arc groove and the flow groove along the entry groove b, flows into the receiving groove through the entry groove a, and then enters the cooling groove through the connecting pipe; the cold air enters the receiving groove to cool the conductive head to avoid the temperature increase caused by the electrical contact between the conductive head and the straight pipe; the cold air enters the cooling groove to cool the battery, thereby ensuring the stable operation of the equipment.

[0019] (3) During the high-temperature test of the present invention, the fixed sleeve b squeezes the abutment plate to connect the arc groove with the flow groove, and the cold air in the low-temperature box can flow into the entry groove a and the receiving groove. During the low-temperature test, the fixed sleeve b leaves the abutment plate, and the entry groove b corresponds to the position of the flow groove. Under the action of the elastic connecting member b, the arc plate is driven to close the connection between the arc groove and the flow groove. At this time, the cold air cannot flow out from the entry groove b and can only flow into the conical electric heating tube, thereby ensuring the normal operation of the device.

[0020] (4) The present invention drives the rotating disk to rotate by rotating the driving member b, so that the filter screen on the other group of sliders is connected with the pipeline b and the flow pipe. The filter screen is used for filtering, and drives the other group of filter screens to move to the bottom. Under the action of gravity, the impurities on the filter screen fall into the collection box; the rotating driving member c drives the swing arm to rotate to move the resistance plate, and drives the slider to slide and collide along the slide groove, thereby enhancing the unloading effect of impurities on the filter screen.

[0021] (5) The present invention drives the cleaning needle a to penetrate into half of the filter holes of the filter net to clean half of the filter holes; the rotary drive member d drives the rotary shaft to rotate, adjusts the distance between the moving plate and the sliding plate so that the cleaning needle b is located at the bottom, drives the cleaning needle b to penetrate into the other half of the filter holes of the filter net to clean the other half of the filter holes; adjusts the distance between the moving plate and the sliding plate so that the bottoms of the cleaning needles b and the cleaning needles a are flush, and the linear drive member a drives the cleaning needles a and the cleaning needles b to move downward and penetrate into all the filter holes of the filter net to correct all the filter holes of the filter net to prevent the deformation of the filter holes from affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the first overall structure of the present invention;

[0023] Figure 2 This is the schematic diagram of the second overall structure of the present invention;

[0024] Figure 3 This is the schematic diagram of the first structure of some parts of the present invention;

[0025] Figure 4 This is the schematic diagram of the second structure of some parts of the present invention;

[0026] Figure 5 This is the schematic diagram of the high and low temperature alternating mechanism of the present invention;

[0027] Figure 6 This is the schematic diagram of the first angle of some parts of the high and low temperature alternating mechanism of the present invention;

[0028] Figure 7 This is the sectional view schematic diagram of the high and low temperature alternating mechanism of the present invention;

[0029] Figure 8 This is the schematic diagram of the rotating ring and gear ring structure of the present invention;

[0030] Figure 9 This is the schematic diagram of the second angle of some parts of the high and low temperature alternating mechanism of the present invention;

[0031] Figure 10 This is the present invention Figure 9 The enlarged schematic diagram at position A in;

[0032] Figure 11 This is the schematic diagram of the inlet groove b of the present invention;

[0033] Figure 12 This is the sectional view schematic diagram of the fixed sleeve a of the present invention;

[0034] Figure 13 This is the schematic diagram of the flow groove and arc groove structure of the present invention;

[0035] Figure 14 This is the schematic diagram of the cooling groove of the present invention;

[0036] Figure 15 This is the sectional view schematic diagram of the water tank of the present invention;

[0037] Figure 16 This is the schematic diagram of the cleaning component of the present invention;

[0038] Figure 17 This is the schematic diagram of the discharging component of the present invention;

[0039] Figure 18 This is the schematic diagram of the rotating disk of the present invention;

[0040] Figure 19 This is the schematic diagram of the slider of the present invention;

[0041] Figure 20 Schematic diagram of the rotating shaft and inclined groove structure of the present invention.

[0042] The reference numerals in this application are as follows: 1, assembly frame; 100, fan; 101, warning light; 2, gas inlet and outlet mechanism; 201, inlet pipe; 202, flow controller; 203, pressure reducing valve; 204, mixing pipe; 205, inlet pipe; 206, first pressure sensor; 207, first temperature sensor; 208, discharge pipe; 209, pressure regulating valve; 210, first radiator; 211, tail discharge pipe; 212, second pressure sensor; 213, second temperature sensor; 3, high and low temperature alternating mechanism; 301, housing; 302, conical electric heating tube; 3021, straight pipe; 303, rotating ring; 304, fixed sleeve a; 3041, accommodating cavity; 3042, inlet groove a; 3043, accommodating groove; 305, storage box; 3051, cooling groove; 306, storage battery; 307, wire; 308, fixing plate; 309, rotating drive member a; 310, rotating rod; 311, gear a; 312, toothed ring; 313, fixed sleeve b; 3131, inlet groove b; 314, low temperature box; 315, air extraction pump; 316, pipe a; 317, connecting plate; 3171, flow groove; 3172, arc groove; 318, connecting pipe; 319, arc plate; 320, connecting rod; 321, baffle; 322, elastic connecting member a; 323, conducting head; 324, elastic connecting member b; 4, steam supply mechanism; 400, flow pipe; 401, steam generator; 402, pumping pump; 403, water tank; 404, second radiator; 405, pipe b; 41, filtering assembly; 411, rotating drive member b; 412, rotating disk; 4121, chute; 413, filter net; 42, discharging assembly; 420, collecting box; 421, slider; 4211, mounting groove; 422, elastic connecting member c; 423, resisting plate; 424, rotating drive member c; 425, swing arm; 426, connecting frame; 4261, stable groove; 43, cleaning assembly; 431, linear drive member a; 432, moving plate; 433, cleaning needle a; 434, guide rod; 435, sliding plate; 436, connecting sleeve; 437, sliding rod; 438, rotating drive member d; 439, rotating shaft; 4391, inclined groove; 440, cleaning needle b. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0046] Embodiment 1: As Figures 1 - 20 shown, this embodiment provides a fuel cell high and low temperature test device, which includes an assembly frame 1. A gas inlet and outlet mechanism 2, a high and low temperature alternating mechanism 3, and a steam supply mechanism 4 are provided on the assembly frame 1. A fan 100 and an alarm lamp 101 are provided on the top of the assembly frame 1; the gas inlet and outlet mechanism 2 includes an inlet pipe 201, a flow controller 202, a pressure reducing valve 203, a mixing pipe 204, and an inlet pipe 205. The inlet pipe 201 is communicated with the inlet pipe 205. The flow controller 202, the pressure reducing valve 203, and the mixing pipe 204 are arranged on the inlet pipe 201. A first pressure sensor 206 and a first temperature sensor 207 are provided on the inlet pipe 205; the steam supply mechanism 4 is communicated with the mixing pipe 204; a discharge pipe 208 is arranged inside the assembly frame 1. A pressure regulating valve 209, a first radiator 210, a tail discharge pipe 211, a second pressure sensor 212, and a second temperature sensor 213 are provided on the discharge pipe 208; the high and low temperature alternating mechanism 3 is arranged on the inlet pipe 201.

[0047] When testing the fuel cell, two sets of this test devices are set up. The two sets of test devices are respectively communicated with the fuel cell. One set is used to introduce oxygen, and the other set is used to introduce hydrogen. The gas (oxygen or hydrogen) enters the fuel cell along the inlet pipe 201, the high and low temperature alternating mechanism 3, and the inlet pipe 205. The gas discharged from the fuel cell is discharged to the tail discharge pipe 211 through the discharge pipe 208;

[0048] As Figures 1 - 20As shown in the figure, the high and low temperature alternating mechanism 3 includes: a housing 301, which is installed on the assembly frame 1; a conical electric heating tube 302, which is arranged inside the housing 301. Straight tubes 3021 are provided at both ends of the conical electric heating tube 302, and the straight tubes 3021 are connected to the housing 301; two rotating rings 303 are rotatably arranged outside the housing 301; a fixing sleeve a304 is installed on the rotating ring 303; a storage box 305 is installed on the housing 301; a storage battery 306 is installed on the storage box 305, and the storage battery 306 is connected to the fixing sleeve a304 through a wire 307.

[0049] A fixing plate 308 is installed on the housing 301, a rotary driving part a309 is installed on the housing 301, a rotary rod 310 is installed at the output end of the rotary driving part a309, a gear a311 is installed on the rotary rod 310, a toothed ring 312 is installed on the rotary ring 303, and the gear a311 and the toothed ring 312 are meshed; an accommodating cavity 3041 is formed inside the fixing sleeve a304, an elastic connecting part a322 is arranged inside the accommodating cavity 3041, and a conducting head 323 is arranged at the free end of the elastic connecting part a322.

[0050] In this embodiment, in the initial state, the position of the conducting head 323 corresponds to that of the straight tube 3021. Under the elastic force of the elastic connecting part a322, the conducting head 323 is driven to contact the straight tube 3021. The storage battery 306 supplies power to both ends of the conical electric heating tube 302, and the conical electric heating tube 302 is energized for heating. The gas in the air inlet pipe 201 is introduced into the housing 301 for heating, and the heated gas is introduced into the fuel cell through the inlet pipe 205 for high-temperature testing;

[0051] The current flow direction is: storage battery 306 → wire 307 → conducting head 323 → straight tube 3021 → conical electric heating tube 302 → straight tube 3021 → conducting head 323 → wire 307 → storage battery 306.

[0052] A fixing sleeve b313 is installed on the rotary ring 303. A low-temperature box 314, an air extraction pump 315, and a pipeline a316 are provided on the assembly frame 1, and the pipeline a316 is communicated with the fixing sleeve b313; a connecting plate 317 is installed on the housing 301, a flow groove 3171 is formed on the side of the connecting plate 317, an inlet groove a3042 is formed on the fixing sleeve a304, an inlet groove b3131 is formed on the fixing sleeve b313, the fixing sleeve a304 and the storage box 305 are communicated through a connecting pipe 318, and a cooling groove 3051 is formed inside the storage box 305.

[0053] An arc-shaped groove 3172 is formed in the connecting plate 317. An arc-shaped plate 319 is slidably arranged in the arc-shaped groove 3172. A connecting rod 320 is installed on the arc-shaped plate 319. A baffle 321 is installed on the connecting rod 320. An elastic connecting piece b324 is sleeved outside the connecting rod 320. The elastic connecting piece b324 is arranged between the arc-shaped groove 3172 and the arc-shaped plate 319. The arc-shaped groove 3172 is communicated with the flow groove 3171.

[0054] In this embodiment, the rotary driving part a309 drives the rotary rod 310 to rotate. Since the gear a311 and the toothed ring 312 are meshed, the rotary ring 303 is driven to rotate, driving the conductive head 323 to leave the straight pipe 3021, and the conical electric heating pipe 302 is powered off to stop heating.

[0055] The fixed sleeve b313 is driven to move to the straight pipe 3021. At this time, the pipeline a316 is communicated with the straight pipe 3021. The cold air in the low-temperature box 314 flows into the conical electric heating pipe 302 through the pipeline a316 and the straight pipe 3021. The gas in the air inlet pipe 201 is introduced into the housing 301 for cooling. The cooled gas is introduced into the fuel cell through the inlet pipe 205 for low-temperature testing.

[0056] During high-temperature testing, the cold air in the low-temperature box 314 enters the fixed sleeve b313 through the pipeline a316, enters the arc-shaped groove 3172 and the flow groove 3171 along the inlet groove b3131, and then flows into the accommodating groove 3043 through the inlet groove a3042, and then enters the cooling groove 3051 through the connecting pipe 318.

[0057] The cold air enters the accommodating groove 3043 to cool the conductive head 323, avoiding the temperature rise caused by the energized contact between the conductive head 323 and the straight pipe 3021. The cold air enters the cooling groove 3051 to cool the storage battery 306, ensuring the stable operation of the equipment.

[0058] During high-temperature testing, the fixed sleeve b313 presses the baffle 321, so that the arc-shaped groove 3172 is communicated with the inlet groove b3131, and the flow groove 3171 is communicated with the inlet groove a3042. The cold air in the low-temperature box 314 can flow into the inlet groove a3042 and the accommodating groove 3043. During low-temperature testing, the fixed sleeve b313 leaves the baffle 321, and the positions of the inlet groove b3131 and the flow groove 3171 correspond. Under the action of the elastic connecting piece b324, the arc-shaped plate 319 is driven to close the communication between the arc-shaped groove 3172 and the flow groove 3171. At this time, the cold air cannot flow out from the inlet groove b3131 and the arc-shaped groove 3172, and only flows into the conical electric heating pipe 302, ensuring the normal operation of the device.

[0059] Embodiment 2: As Figures 1 - 20As shown, components that are the same as or corresponding to those in the first embodiment are denoted by the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The differences between the second embodiment and the first embodiment are as follows:

[0060] As Figures 1 - 20 shown, the steam supply mechanism 4 includes: a steam generator 401 installed on the assembly frame 1; a pumping device 402 installed on the assembly frame 1; a water tank 403 installed on the assembly frame 1; a second radiator 404 installed on the assembly frame 1; a pipe b405 communicating with the steam generator 401, the pumping device 402, the water tank 403, and the second radiator 404; a filtering assembly 41 installed in the water tank 403.

[0061] In this embodiment, the steam generated by the steam generator 401 enters the mixing pipe 204 and is mixed with the gas in the intake pipe 201, and then enters the fuel cell through the inlet pipe 205 for high-temperature humidity testing. The steam generation process is not carried out simultaneously with the high-temperature testing process and the low-temperature testing process.

[0062] The filtering assembly 41 includes: a rotary driving member b411 installed in the water tank 403; a rotary disk 412 installed at the output end of the rotary driving member b411; a plurality of filter meshes 413 provided on the rotary disk 412; a flow pipe 400 provided in the water tank 403, a discharging assembly 42 provided in the water tank 403; a cleaning assembly 43 provided in the water tank 403.

[0063] The discharging assembly 42 includes: a plurality of chutes 4121 opened on the rotary disk 412; a slider 421 slidably disposed in the chute 4121; an installation groove 4211 formed in the slider 421; the filter mesh 413 is disposed in the installation groove 4211; an elastic connecting member c422 disposed between the chute 4121 and the slider 421; a contact plate 423 installed on one side of the slider 421; a rotary driving member c424 installed in the water tank 403; a swing arm 425 installed at the output end of the rotary driving member c424, a connecting frame 426 is installed in the water tank 403, and a stable groove 4261 is formed in the connecting frame 426, and chamfers are formed on both sides of the stable groove 4261.

[0064] In this embodiment, the water circulation is water tank 403 → pipe b405 → pump 402 → steam generator 401 → water tank 403. When the water in the steam generator 401 flows into the water tank 403, it first passes through the filter 413 and then flows into the water tank 403 through the flow pipe 400; the filter 413 filters impurities in the water.

[0065] The rotating drive member b411 drives the rotating disk 412 to rotate, so that the filter screen 413 on the other set of sliders 421 is connected with the pipeline b405 and the flow pipe 400. The filter screen 413 is used for filtering, and drives the other set of filter screens 413 to move to the bottom. Under the action of gravity, impurities on the filter screens 413 fall into the collection box 420;

[0066] The rotary driving member c424 drives the swing arm 425 to rotate and move the contact plate 423, driving the sliding block 421 to slide and collide along the sliding groove 4121, thereby enhancing the unloading effect of impurities on the filter screen 413.

[0067] The cleaning assembly 43 includes: a linear drive member a431, the linear drive member a431 is installed in the water tank 403; a moving plate 432, the moving plate 432 is installed on the linear drive member a431; a cleaning needle a433, a plurality of cleaning needles a433 are arranged on the moving plate 432; a guide rod 434, the guide rod 434 is slidably arranged on the moving plate 432; a sliding plate 435, the sliding plate 435 is installed on the guide rod 434; a connecting sleeve 436, the connecting sleeve 436 is installed on the sliding plate 435; a sliding plate 435 is provided on the sliding plate 435; a sliding plate 436 ... Moving rod 437, sliding rod 437 is installed in connecting sleeve 436; rotating driving member d438, rotating driving member d438 is installed on moving plate 432; rotating shaft 439, rotating shaft 439 is installed on output end of rotating driving member d438; rotating shaft 439 is provided with inclined groove 4391, sliding rod 437 slides in inclined groove 4391; cleaning needle b440, multiple cleaning needles b440 are installed on sliding plate 435, cleaning needles a433 and cleaning needles b440 are arranged at intervals.

[0068] In this embodiment, in the initial state, the cleaning needle a433 is located at the bottom, and the linear driving member a431 drives the cleaning needle a433 to penetrate into half of the filter holes of the filter screen 413 to clean half of the filter holes of the filter screen 413;

[0069] The rotary drive member d438 drives the rotary shaft 439 to rotate, and adjusts the distance between the moving plate 432 and the sliding plate 435, so that the cleaning needle b440 is located at the bottom, and the linear drive member a431 drives the cleaning needle b440 to penetrate the filter holes of the other half of the filter screen 413, so as to clean the filter holes of the other half of the filter screen 413;

[0070] Adjust the distance between the moving plate 432 and the sliding plate 435 so that the bottoms of the cleaning needle b440 and the cleaning needle a433 are flush. The linear drive member a431 drives the cleaning needle a433 and the cleaning needle b440 to move downward and penetrate all the filter holes on the filter net 413, correcting all the filter holes on the filter net 413 to prevent the deformation of the filter holes from affecting the filtering effect. It should be noted that the cleaning needle a433 and the cleaning needle b440 are square needles with a tapered front end for easy penetration into the filter holes, and the filter holes are square holes.

[0071] Embodiment 3: This embodiment provides a test method for a fuel cell high and low temperature test device, including the following steps:

[0072] Step 1, ventilation process: When testing the fuel cell, two sets of this test devices are set up. The two sets of test devices are respectively connected to the fuel cell. One set is used to introduce oxygen, and the other set is used to introduce hydrogen. The gas enters the fuel cell along the intake pipe 201, the high and low temperature alternating mechanism 3, and the inlet pipe 205. The gas discharged from the fuel cell is discharged to the tail pipe 211 through the discharge pipe 208;

[0073] Step 2, high temperature test process: In the initial state, the conductive head 323 corresponds to the position of the straight pipe 3021. Under the elastic force of the elastic connection member a322, the conductive head 323 is driven to contact the straight pipe 3021. The storage battery 306 supplies power to both ends of the conical electric heating tube 302. The conical electric heating tube 302 is energized and heated. The gas in the intake pipe 201 enters the housing 301 for heating, and the heated gas is introduced into the fuel cell through the inlet pipe 205 for high temperature testing;

[0074] Step 3, low temperature test process: The rotary drive member a309 drives the rotary rod 310 to rotate. Since the gear a311 and the toothed ring 312 are engaged, the rotary ring 303 is driven to rotate, driving the conductive head 323 to leave the straight pipe 3021, and the power supply to the conical electric heating tube 302 is cut off to stop heating;

[0075] The fixed sleeve b313 is driven to move to the straight pipe 3021. At this time, the pipe a316 is communicated with the straight pipe 3021. The cold air in the low temperature box 314 flows into the conical electric heating tube 302 through the pipe a316 and the straight pipe 3021. The gas in the intake pipe 201 enters the housing 301 for cooling. The cooled gas is introduced into the fuel cell through the inlet pipe 205 for low temperature testing;

[0076] Step 4, stabilization process: The cold air in the low temperature box 314 enters the fixed sleeve b313 through the pipe a316, enters the arc-shaped groove 3172 and the flow groove 3171 along the inlet groove b3131, then flows into the accommodation groove 3043 through the inlet groove a3042, and then enters the cooling groove 3051 through the communication pipe 318;

[0077] The cold air enters the receiving groove 3043 to cool the conductive head 323, thereby preventing the conductive head 323 and the straight tube 3021 from being electrically connected and causing the temperature to rise; the cold air enters the cooling groove 3051 to cool the storage battery 306, thereby ensuring the stable operation of the equipment;

[0078] During the high temperature test, the fixed sleeve b313 squeezes the baffle plate 321, so that the arc groove 3172 is connected with the entry groove b3131, and the flow groove 3171 is connected with the entry groove a3042, and the cold air in the low temperature box 314 can flow into the entry groove a3042 and the receiving groove 3043. During the low temperature test, the fixed sleeve b313 leaves the baffle plate 321, and the entry groove b3131 corresponds to the flow groove 3171. Under the action of the elastic connecting member b324, the arc plate 319 is driven to close the connection between the arc groove 3172 and the flow groove 3171; at this time, the cold air cannot flow out from the entry groove b3131 and the arc groove 3172, and only flows into the conical electric heating tube 302, thereby ensuring the normal operation of the device;

[0079] Step 5, steam generation process: the steam generator 401 generates steam which enters the mixing pipe 204 and mixes with the gas in the intake pipe 201 and then passes into the fuel cell through the intake pipe 205 for high temperature and humidity testing;

[0080] Step 6, filtration process: the water cycle is water tank 403 → pipe b405 → pump 402 → steam generator 401 → water tank 403. When the water in the steam generator 401 flows into the water tank 403, it first passes through the filter 413 and then flows into the water tank 403 through the flow pipe 400; the filter 413 filters the impurities in the water;

[0081] Step 7, unloading process: the rotating driving member b411 drives the rotating disk 412 to rotate, so that the filter screen 413 on the other set of sliders 421 is connected with the pipeline b405 and the flow pipe 400. The filter screen 413 is used for filtering, and drives the other set of filter screens 413 to move to the bottom. Under the action of gravity, the impurities on the filter screens 413 fall into the collection box 420;

[0082] The rotating driving member c424 drives the swing arm 425 to rotate and move the abutment plate 423, driving the slider 421 to slide and impact along the slide groove 4121, thereby enhancing the unloading effect of impurities on the filter screen 413;

[0083] Step 8, cleaning process: in the initial state, the cleaning needle a433 is located at the bottom, and the linear driving member a431 drives the cleaning needle a433 to penetrate into half of the filter holes of the filter screen 413 to clean half of the filter holes of the filter screen 413;

[0084] The rotary drive member d438 drives the rotary shaft 439 to rotate, adjusts the distance between the moving plate 432 and the sliding plate 435, so that the cleaning needle b440 is at the lowest position, and the linear drive member a431 drives the cleaning needle b440 to pierce into the filter holes of the other half of the filter net 413 to clean the filter holes of the other half of the filter net 413;

[0085] Adjust the distance between the moving plate 432 and the sliding plate 435 to make the bottoms of the cleaning needle b440 and the cleaning needle a433 flush. The linear drive member a431 drives the cleaning needle a433 and the cleaning needle b440 to move downward and pierce into all the filter holes on the filter net 413 to correct all the filter holes on the filter net 413 and prevent the deformation of the filter holes from affecting the filtering effect.

[0086] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel cell high and low temperature testing device, comprising an assembly rack (1), characterized in that: The assembly rack (1) is provided with a gas inlet and outlet mechanism (2), a high and low temperature alternating mechanism (3) and a steam supply mechanism (4), and the top of the assembly rack (1) is provided with a fan (100) and an alarm light (101); The gas intake and exhaust mechanism (2) comprises an intake pipe (201), a flow controller (202), a pressure reducing valve (203), a mixing pipe (204) and an intake pipe (205); the intake pipe (201) is in communication with the intake pipe (205); the flow controller (202), the pressure reducing valve (203) and the mixing pipe (204) are arranged on the intake pipe (201); and the intake pipe (205) is provided with a first pressure sensor (206) and a first temperature sensor (207); the steam supply mechanism (4) is in communication with the mixing pipe (204); An exhaust pipe (208) is provided in the assembly frame (1); a pressure regulating valve (209), a first radiator (210), a tail exhaust pipe (211), a second pressure sensor (212) and a second temperature sensor (213) are provided on the exhaust pipe (208); the high and low temperature alternating mechanism (3) is provided on the intake pipe (201); The high and low temperature alternating mechanism (3) comprises: a shell (301), the shell (301) being mounted on the assembly frame (1); a conical electric heating tube (302), the conical electric heating tube (302) being arranged in the shell (301), and straight tubes (3021) being arranged at both ends of the conical electric heating tube (302), and the straight tubes (3021) being connected to the shell (301); a rotating ring (303), two rotating rings (303) being rotatably arranged outside the shell (301); a fixing sleeve a (304), the fixing sleeve a (304) being mounted on the rotating ring (303); a storage box (305), the storage box (305) being mounted on the shell (301); a storage battery (306), the storage battery (306) being mounted on the storage box (305), and the storage battery (306) and the fixing sleeve a (304) being connected via a wire (307); A fixing sleeve b (313) is installed on the rotating ring (303); a low temperature box (314), an air extraction pump (315), and a pipeline a (316) are provided on the assembly frame (1); and the pipeline a (316) is in communication with the fixing sleeve b (313); A connecting plate (317) is installed on the shell (301), a flow groove (3171) is provided on the side of the connecting plate (317), an entry groove a (3042) is provided on the fixing sleeve a (304), an entry groove b (3131) is provided on the fixing sleeve b (313), the fixing sleeve a (304) and the storage box (305) are connected via a connecting pipe (318), and a cooling groove (3051) is provided in the storage box (305); An arc-shaped groove (3172) is provided in the connecting plate (317), an arc-shaped plate (319) is slidably provided in the arc-shaped groove (3172), a connecting rod (320) is mounted on the arc-shaped plate (319), a baffle (321) is mounted on the connecting rod (320), an elastic connecting member b (324) is sleeved on the outer side of the connecting rod (320), and the elastic connecting member b (324) is arranged between the arc-shaped groove (3172) and the arc-shaped plate (319).

2. A fuel cell high and low temperature testing device according to claim 1, characterized in that: A fixing plate (308) is mounted on the housing (301), a rotating driving member a (309) is mounted on the housing (301), a rotating rod (310) is mounted on the output end of the rotating driving member a (309), a gear a (311) is mounted on the rotating rod (310), a gear ring (312) is mounted on the rotating ring (303), and the gear a (311) and the gear ring (312) are meshed; The fixing sleeve a (304) is provided with a receiving cavity (3041), an elastic connecting piece a (322) is provided in the receiving cavity (3041), and a conductive head (323) is provided at a free end of the elastic connecting piece a (322).

3. A fuel cell high and low temperature testing device according to claim 2, characterized in that: The steam providing mechanism (4) comprises: A steam generator (401), the steam generator (401) being mounted on the assembly rack (1); A pump (402), the pump (402) being mounted on the assembly frame (1); A water tank (403), the water tank (403) being mounted on the assembly frame (1); a second radiator (404), the second radiator (404) being mounted on the assembly frame (1); A pipeline b (405), the pipeline b (405) is in communication with the steam generator (401), the pump (402), the water tank (403), and the second radiator (404); A filter assembly (41), wherein the filter assembly (41) is installed in the water tank (403).

4. A fuel cell high and low temperature testing device according to claim 3, characterized in that: The filtering component (41) comprises: A rotating driving member b (411), wherein the rotating driving member b (411) is installed in the water tank (403); A rotating disk (412), the rotating disk (412) being mounted on an output end of the rotating driving member b (411); A filter screen (413), wherein a plurality of the filter screens (413) are arranged on the rotating disk (412); A flow pipe (400), wherein the flow pipe (400) is arranged in the water tank (403); A discharge assembly (42), wherein the discharge assembly (42) is arranged in the water tank (403); A cleaning component (43), wherein the cleaning component (43) is arranged in the water tank (403).

5. A fuel cell high and low temperature testing device according to claim 4, characterized in that: The unloading assembly (42) comprises: A slide groove (4121), wherein a plurality of the slide grooves (4121) are provided on the rotating disk (412); A sliding block (421), the sliding block (421) being slidably disposed in the sliding groove (4121); a mounting groove (4211) is provided in the sliding block (421); the filter screen (413) is disposed in the mounting groove (4211); an elastic connecting member c (422), wherein the elastic connecting member c (422) is arranged between the sliding groove (4121) and the sliding block (421); A contact plate (423), the contact plate (423) being mounted on one side of the sliding block (421); A rotating driving member c (424), wherein the rotating driving member c (424) is installed in the water tank (403); A swing arm (425) is mounted on the output end of the rotary drive member c (424); a connecting frame (426) is mounted in the water tank (403); a stabilizing groove (4261) is provided on the connecting frame (426); and chamfers are provided on both sides of the stabilizing groove (4261).

6. A fuel cell high and low temperature testing device according to claim 5, characterized in that: The cleaning component (43) comprises: A linear driving member a (431), wherein the linear driving member a (431) is installed in the water tank (403); A moving plate (432), the moving plate (432) being mounted on the linear drive member a (431); Cleaning needles a (433), a plurality of cleaning needles a (433) are arranged on the moving plate (432); a guide rod (434), the guide rod (434) being slidably disposed on the moving plate (432); A sliding plate (435), the sliding plate (435) being mounted on the guide rod (434); A connecting sleeve (436), wherein the connecting sleeve (436) is mounted on the sliding plate (435); A sliding rod (437), wherein the sliding rod (437) is installed in the connecting sleeve (436); A rotating driving member d (438), wherein the rotating driving member d (438) is mounted on the moving plate (432); A rotating shaft (439), the rotating shaft (439) being mounted on the output end of the rotating driving member d (438); an inclined groove (4391) is provided in the rotating shaft (439), and the sliding rod (437) slides in the inclined groove (4391); Cleaning needles b (440), a plurality of cleaning needles b (440) are mounted on the sliding plate (435), and the cleaning needles a (433) and cleaning needles b (440) are arranged at intervals.

7. The test method of a fuel cell high and low temperature test equipment according to claim 6, characterized in that: The following steps are involved: Step 1, ventilation process: gas enters the fuel cell along the intake pipe (201), the high and low temperature alternating mechanism (3), and the intake pipe (205), and the gas exhausted from the fuel cell is discharged to the tail exhaust pipe (211) through the exhaust pipe (208); Step 2, high temperature test process: under the elastic force of the elastic connector a (322), the conductive head (323) is driven to contact the straight tube (3021), the battery (306) supplies power to both ends of the conical electric heating tube (302), the conical electric heating tube (302) is powered on for heating, the gas in the intake pipe (201) is passed into the housing (301) for heating, and the heated gas is passed into the fuel cell through the intake pipe (205) for high temperature testing; Step 3, low temperature testing process: driving the rotating rod (310) to rotate, and since the gear a (311) and the gear ring (312) are meshed, driving the rotating ring (303) to rotate, driving the conductive head (323) to leave the straight tube (3021), and cutting off the power to the conical electric heating tube (302) to stop heating; The fixed sleeve b (313) is driven to move to the straight tube (3021), at which time the pipe a (316) is connected to the straight tube (3021), and the cold air in the low-temperature box (314) flows into the conical electric heating tube (302) through the pipe a (316) and the straight tube (3021), and the gas in the air inlet pipe (201) is passed into the shell (301) for cooling, and the cooled gas is passed into the fuel cell through the inlet pipe (205) for low-temperature testing; Step 4, stabilization process: the cold air in the low temperature box (314) enters the fixed sleeve b (313) through the pipe a (316), enters the arc groove (3172) and the flow groove (3171) along the entry groove b (3131), and then flows into the containing groove (3043) through the entry groove a (3042), and then enters the cooling groove (3051) through the connecting pipe (318); Cold air enters the containing tank (3043) to cool the conductive head (323), thereby preventing the conductive head (323) and the straight tube (3021) from being electrically connected to each other and causing the temperature to rise; cold air enters the cooling tank (3051) to cool the storage battery (306), thereby ensuring the stable operation of the equipment; Step 5, steam generation process: the steam generator (401) generates steam which enters the mixing pipe (204) and mixes with the gas in the air inlet pipe (201), and then passes through the inlet pipe (205) into the fuel cell for high temperature and humidity testing; Step 6, filtering process: the water circulation direction is the water tank (403), the pipe b (405), the pump (402), the steam generator (401), and the water tank (403). When the water in the steam generator (401) flows into the water tank (403), it first passes through the filter screen (413) and then flows into the water tank (403) through the flow pipe (400); the filter screen (413) filters impurities in the water; Step 7, unloading process: driving the rotating disk (412) to rotate, so that the filter screen (413) on the other set of sliders (421) is connected with the pipeline b (405) and the flow pipe (400), and the filter screen (413) is used for filtering, and driving the other set of filter screens (413) to move to the bottom, and under the action of gravity, the impurities on the filter screens (413) fall into the collection box (420); The swing arm (425) is driven to rotate to move the abutment plate (423), and the slider (421) is driven to slide and collide along the slide groove (4121), thereby enhancing the effect of unloading impurities on the filter screen (413); Step 8, cleaning process: in the initial state, the cleaning needle a (433) is located at the bottom, and the linear driving member a431 drives the cleaning needle a (433) to penetrate half of the filter holes of the filter screen (413), thereby cleaning half of the filter holes of the filter screen (413); The rotating shaft (439) is driven to rotate, and the distance between the moving plate (432) and the sliding plate (435) is adjusted so that the cleaning needle b (440) is located at the bottom, and the cleaning needle b (440) is driven to penetrate into the filter holes of the other half of the filter screen (413), so as to clean the filter holes of the other half of the filter screen (413); The distance between the moving plate (432) and the sliding plate (435) is adjusted so that the bottoms of the cleaning needles b (440) and the cleaning needles a (433) are flush with each other, and the cleaning needles a (433) and the cleaning needles b (440) are driven to move downward to penetrate all the filter holes on the filter screen (413), thereby correcting all the filter holes on the filter screen (413) to prevent deformation of the filter holes from affecting the filtering effect.

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