Fuel cell high and low temperature test equipment and method

Abstract

The invention provides fuel cell high and low temperature test equipment and method, the test equipment comprises an assembly frame, the assembly frame is provided with a gas inlet and outlet mechanism, a high and low temperature alternating mechanism and a steam supply mechanism, and the top of the assembly frame is provided with a fan and an alarm lamp; the gas inlet and outlet mechanism comprises a gas inlet pipe, a flow controller, a pressure reducing valve, a mixing pipe and an inlet pipe. The rotating driving part a drives the rotating rod to rotate, drives the rotating ring to rotate, drives the conductive head to leave the straight pipe, and powers off the conical electric heating pipe to stop heating; when the fixed sleeve b is driven to move to the straight pipe, the pipeline a is communicated with the straight pipe at the moment, cold air in the low-temperature box flows into the conical electric heating pipe through the pipeline a and the straight pipe, gas in the gas inlet pipe is introduced into the shell for cooling, the cooled gas is introduced into the fuel cell through the gas inlet pipe for low-temperature testing, and the time for switching from a high-temperature state to a low-temperature state is short; and the gas can be conveniently and rapidly switched from high temperature to low temperature.

Description

Technical Field

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

[0002] A fuel cell is a chemical device that converts the chemical energy of a fuel directly into electrical energy. It is also called an electrochemical generator. It is the fourth power generation technology after hydroelectric power generation, thermal power generation and atomic power generation. Fuel cells need to undergo high and low temperature tests before design to verify their reliability.

[0003] Chinese patent application No. 2020222637978 discloses a fuel cell test box, including a test box body, a water outlet, a telescopic spring and a support plate. A limiting structure is provided on one side of the interior of the mounting groove. The limiting structure includes a handle, an adjustment rod, a limiting baffle, a connecting groove and an extrusion plate. The limiting baffle is fixed on the outer surface of the adjustment rod, and an extrusion plate is fixed on one side of the adjustment rod. The other side of the adjustment rod is fixed with a handle. By installing an extrusion plate on one side of the interior of the mounting groove, the extrusion plate directly contacts the battery, and can directly contact the battery to squeeze and fix the battery, thereby realizing the limiting fixation of batteries of different sizes.

[0004] Fuel cell testing requires the introduction of gas (air, hydrogen), where the temperature of the gas (air, hydrogen) has a great influence on the performance of the fuel cell. The test chamber can perform high-temperature or low-temperature testing on the gas (air, hydrogen), but the test chamber takes a long time to switch from high temperature to low temperature, making it difficult to achieve rapid switching between high and low temperatures, and the fuel cell testing conditions are limited. Therefore, we propose a high and low temperature testing device and method for fuel cell testing. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and provide a fuel cell high and low temperature testing device and method, which drives a rotating rod to rotate through a rotating driving member a, drives a 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 to 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 and 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 state is 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: A high and low temperature testing device for a fuel cell comprises an assembly rack, on which a gas intake and exhaust mechanism, a high and low temperature alternating mechanism and a steam providing mechanism are provided, and a fan and an alarm light are provided on the top of the assembly rack; the gas intake and exhaust mechanism comprises an intake pipe, a flow controller, a pressure reducing valve, a mixing pipe and an intake pipe, the intake pipe is connected with the intake pipe, the flow controller, the pressure reducing valve and the mixing pipe are provided on the intake pipe, and a first pressure sensor and a first temperature sensor are provided on the intake pipe; the steam providing mechanism is connected with the mixing pipe; an exhaust pipe is provided in the assembly rack, and a pressure regulating valve, a first radiator, a tail exhaust pipe, a second pressure sensor and a second temperature sensor are provided on the exhaust pipe; the high and low temperature alternating mechanism is provided on the intake pipe.

[0007] The high and low temperature alternating mechanism includes: a shell, which is installed on the assembly frame; a conical electric heating tube, which is arranged in the shell, and straight tubes are provided at both ends of the conical electric heating tube, and the straight tubes are connected to the shell; a rotating ring, two rotating rings are rotatably arranged on the outside of the shell; a fixed sleeve a, which is installed on the rotating ring; a storage box, which is installed on the shell; a battery, which is installed on the storage box, and the battery and the fixed sleeve a are connected by a wire.

[0008] A fixing plate is installed on the shell, a rotating driving member a is installed on the shell, a rotating rod is installed on the output end of the rotating driving member a, a gear a is installed on the rotating rod, a gear ring is installed on the rotating ring, and the gear a and the gear ring are meshed; an accommodating cavity is opened in the fixing sleeve a, an elastic connecting member a is arranged in the accommodating cavity, and a conductive head is arranged at the free end of the elastic connecting member a.

[0009] A fixed sleeve b is installed on the rotating ring, and a low-temperature box, an air pump and a pipe a are provided on the assembly frame. The pipe a is connected with the fixed sleeve b; a connecting plate is installed on the shell, and a flow groove is provided on the side of the connecting plate. An entry groove a is provided on the fixed sleeve a, and an entry groove b is provided on the fixed sleeve b. The fixed sleeve a and the storage box are connected by a connecting pipe, and a cooling groove is provided in the storage box.

[0010] An arc groove is provided in the connecting plate, an arc plate is slidably provided in the arc groove, a connecting rod is installed on the arc plate, a baffle is installed on the connecting rod, an elastic connecting member b is sleeved on the outer side of the connecting rod, and the elastic connecting member b is arranged between the arc groove and the arc plate.

[0011] The steam providing mechanism includes: a steam generator, which is installed on the assembly rack; a pump, which is installed on the assembly rack; a water tank, which is installed on the assembly rack; a second radiator, which is installed on the assembly rack; a pipeline b, which is connected to the steam generator, the pump, the water tank, and the second radiator; and a filter assembly, which is installed in the water tank.

[0012] The filter assembly includes: a rotating drive member b, which is installed in the water tank; a rotating disk, which is installed at the output end of the rotating drive member b; a filter screen, a plurality of filter screens are arranged on the rotating disk; a flow pipe, which is arranged in the water tank; a discharge assembly, which is arranged in the water tank; and a cleaning assembly, which is arranged in the water tank.

[0013] The unloading assembly includes: a slide groove, a plurality of the slide grooves are opened on the rotating disk; a slider, the slider is slidably arranged in the slide groove; a mounting groove is opened in the slider; the filter is arranged in the mounting groove; an elastic connecting member c, the elastic connecting member c is arranged between the slide groove and the slider; a resistance plate, the resistance plate is installed on one side of the slider; a rotating driving member c, the rotating driving member c is installed in the water tank; a swing arm, the swing arm is installed at the output end of the rotating driving member c, a connecting frame is installed in the water tank, a stabilizing groove is opened on the connecting frame, and chamfers are opened on both sides of the stabilizing groove.

[0014] The cleaning assembly includes: a linear drive member a, which is installed in the water tank; a moving plate, which is installed on the linear drive member a; a cleaning needle a, a plurality of cleaning needles a are arranged on the moving plate; a guide rod, which is slidably arranged on the moving plate; a sliding plate, which is installed on the guide rod; a connecting sleeve, which is installed on the sliding plate; a sliding rod, which is installed in the connecting sleeve; a rotating drive member d, which is installed on the moving plate; a rotating shaft, which is installed at the output end of the rotating drive member d; an inclined groove is opened in the rotating shaft, and the sliding rod slides in the inclined groove; a cleaning needle b, a plurality of cleaning needles b are installed on the sliding plate, and the cleaning needles a and cleaning needles b are arranged at intervals.

[0015] The beneficial effects of the present invention are: (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.

[0016] (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.

[0017] (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.

[0018] (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.

[0019] (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

[0020] Figure 1 It is a schematic diagram of the first overall structure of the present invention; Figure 2It is a schematic diagram of the second overall structure of the present invention; Figure 3 This is a schematic diagram of the first structure of some parts of the present invention; Figure 4 It is a second structural schematic diagram of some parts of the present invention; Figure 5 This is a schematic diagram of the high and low temperature alternating mechanism structure of the present invention; Figure 6 This is a schematic diagram of some parts of the high and low temperature alternating mechanism of the present invention from a first angle; Figure 7 It is a cross-sectional schematic diagram of the high and low temperature alternating mechanism of the present invention; Figure 8 It is a schematic diagram of the structure of the rotating ring and the gear ring of the present invention; Fig. 9 It is a second angle schematic diagram of some parts of the high and low temperature alternating mechanism of the present invention; Fig.10 For the present invention Fig. 9 The enlarged schematic diagram at A in the middle; Fig.11 This is a schematic diagram of the structure of the entry slot b of the present invention; Fig.12 It is a cross-sectional schematic diagram of the fixing sleeve a of the present invention; Fig.13 It is a schematic diagram of the flow trough and arc trough structure of the present invention; Fig.14 It is a schematic diagram of the cooling tank structure of the present invention; Fig.15 This is a schematic diagram of the cross-sectional structure of the water tank of the present invention; Fig.16 This is a schematic diagram of the cleaning component structure of the present invention; Fig.17 This is a schematic diagram of the structure of the unloading assembly of the present invention; Fig.18 This is a schematic diagram of the structure of the rotating disk of the present invention; Fig.19 This is a schematic diagram of the structure of the slider of the present invention; Fig. 20 It is a schematic diagram of the rotating shaft and inclined slot structure of the present invention.

[0021] The accompanying drawings of the present application are as follows: 1. assembly frame; 100. fan; 101. warning light; 2. gas inlet and outlet mechanism; 201. air inlet pipe; 202. flow controller; 203. pressure reducing valve; 204. mixing pipe; 205. inlet pipe; 206. first pressure sensor; 207. first temperature sensor; 208. outlet pipe; 209. pressure regulating valve; 210. first radiator; 211. tail exhaust pipe; 212. second pressure sensor; 213. second temperature sensor; 3. high and low temperature alternating mechanism; 301. housing; 302. 02, conical electric heating tube; 3021, straight tube; 303, rotating ring; 304, fixed sleeve a; 3041, accommodating chamber; 3042, entering slot a; 3043, accommodating slot; 305, storage box; 3051, cooling slot; 306, battery; 307, wire; 308, fixed plate; 309, rotating drive member a; 310, rotating rod; 311, gear a; 312, gear ring; 313, fixed sleeve b; 3131, entering slot b; 314, low temperature box; 315, vacuum pump; 316, pipeline a; 317, connecting plate ; 3171, flow groove; 3172, arc groove; 318, connecting pipe; 319, arc plate; 320, connecting rod; 321, baffle; 322, elastic connector a; 323, conductive head; 324, elastic connector b; 4, steam supply mechanism; 400, flow pipe; 401, steam generator; 402, pump; 403, water tank; 404, second radiator; 405, pipeline b; 41, filter assembly; 411, rotating drive member b; 412, rotating disk; 4121, slide; 413, filter screen; 42, Discharging assembly; 420, collecting box; 421, sliding block; 4211, mounting groove; 422, elastic connecting member c; 423, resistance plate; 424, rotating driving member c; 425, swing arm; 426, connecting frame; 4261, stabilizing groove; 43, cleaning assembly; 431, linear driving member a; 432, moving plate; 433, cleaning needle a; 434, guide rod; 435, sliding plate; 436, connecting sleeve; 437, sliding rod; 438, rotating driving member d; 439, rotating shaft; 4391, inclined groove; 440, cleaning needle b. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] Embodiment 1: Figure 1-Figure 20 As shown, this embodiment provides a high and low temperature test device for a fuel cell, including an assembly rack 1, on which a gas intake and exhaust mechanism 2, a high and low temperature alternating mechanism 3 and a steam providing mechanism 4 are provided, and a fan 100 and an alarm light 101 are provided on the top of the assembly rack 1; the gas intake and exhaust mechanism 2 includes 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 connected 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 a first pressure sensor 206 and a first temperature sensor 207 are provided on the intake pipe 205; the steam providing mechanism 4 is connected with the mixing pipe 204; a discharge pipe 208 is provided in the assembly rack 1, and 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 discharge pipe 208; the high and low temperature alternating mechanism 3 is provided on the intake pipe 201.

[0026] When testing the fuel cell, the present test equipment is provided with two groups, and the two groups of test equipment are connected to the fuel cell respectively, one group is used to introduce oxygen, and the other group is used to introduce hydrogen. The gas (oxygen or hydrogen) enters the fuel cell along the intake pipe 201, the high and low temperature alternating mechanism 3, and the inlet pipe 205. The gas exhausted by the fuel cell is discharged to the tail exhaust pipe 211 through the exhaust pipe 208; like Figure 1-Figure 20As shown, the high and low temperature alternating mechanism 3 includes: a shell 301, which is installed on the assembly frame 1; a conical electric heating tube 302, which is arranged in the shell 301, and straight tubes 3021 are provided at both ends of the conical electric heating tube 302, and the straight tubes 3021 are connected to the shell 301; a rotating ring 303, two rotating rings 303 are rotatably arranged on the outside of the shell 301; a fixed sleeve a304, which is installed on the rotating ring 303; a storage box 305, which is installed on the shell 301; a battery 306, which is installed on the storage box 305, and the battery 306 and the fixed sleeve a304 are connected by a wire 307.

[0027] A fixing plate 308 is installed on the shell 301, a rotating driving member a309 is installed on the shell 301, a rotating rod 310 is installed on the output end of the rotating driving member a309, a gear a311 is installed on the rotating rod 310, a gear ring 312 is installed on the rotating ring 303, and the gear a311 and the gear ring 312 are meshed; an accommodating cavity 3041 is opened in the fixing sleeve a304, an elastic connecting member a322 is arranged in the accommodating cavity 3041, and a conductive head 323 is arranged at the free end of the elastic connecting member a322.

[0028] In this embodiment, in the initial state, the conductive head 323 corresponds to the straight tube 3021. Under the elastic force of the elastic connector a322, 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 shell 301 for heating. The heated gas is passed into the fuel cell through the inlet pipe 205 for high temperature testing. The current flow is: battery 306 → wire 307 → conductive head 323 → straight tube 3021 → conical electric heating tube 302 → straight tube 3021 → conductive head 323 → wire 307 → battery 306 .

[0029] A fixed sleeve b313 is installed on the rotating ring 303, and a low-temperature box 314, an air pump 315, and a pipe a316 are provided on the assembly frame 1. The pipe a316 is connected to the fixed sleeve b313; a connecting plate 317 is installed on the shell 301, and a flow groove 3171 is opened on the side of the connecting plate 317, an entry groove a3042 is opened on the fixed sleeve a304, and an entry groove b3131 is opened on the fixed sleeve b313. The fixed sleeve a304 and the storage box 305 are connected by a connecting pipe 318, and a cooling groove 3051 is opened in the storage box 305.

[0030] An arc groove 3172 is provided in the connecting plate 317, an arc plate 319 is slidably provided in the arc groove 3172, a connecting rod 320 is installed on the arc plate 319, a baffle 321 is installed on the connecting rod 320, an elastic connecting member b324 is sleeved on the outer side of the connecting rod 320, the elastic connecting member b324 is provided between the arc groove 3172 and the arc plate 319, and the arc groove 3172 is connected to the flow groove 3171.

[0031] In this embodiment, the rotary drive member a309 drives the rotary rod 310 to rotate. Due to the meshing of the gear a311 and the gear ring 312, the rotary ring 303 is driven to rotate, driving the conductive head 323 to leave the straight tube 3021, and the conical electric heating tube 302 is powered off and stops heating. Drive the fixed sleeve b313 to move to the straight pipe 3021. At this time, the pipe a316 is connected to 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 air intake pipe 201 is passed into the shell 301 for cooling. The cooled gas is passed into the fuel cell through the inlet pipe 205 for low-temperature testing.

[0032] When performing a high temperature test, the cold air in the low temperature box 314 enters the fixed sleeve b313 through the pipe a316, enters the arc groove 3172 and the flow groove 3171 along the entry groove b3131, flows into the receiving groove 3043 through the entry groove a3042, and then enters the cooling groove 3051 through the connecting pipe 318; 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; During the high temperature test, the fixed sleeve b313 squeezes the baffle 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 321, and the entry groove b3131 corresponds to the position of the flow groove 3171. Under the action of the elastic connecting piece 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.

[0033] Embodiment 2: Figure 1-Figure 20 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that: like Figure 1-Figure 20 As shown, the steam providing mechanism 4 includes: a steam generator 401, which is installed on the assembly rack 1; a pump 402, which is installed on the assembly rack 1; a water tank 403, which is installed on the assembly rack 1; a second radiator 404, which is installed on the assembly rack 1; a pipe b405, which is connected to the steam generator 401, the pump 402, the water tank 403, and the second radiator 404; and a filter component 41, which is installed in the water tank 403.

[0034] In this embodiment, the steam generator 401 generates steam which enters the mixing tube 204 and mixes with the gas in the intake pipe 201 and then enters the fuel cell through the intake pipe 205 for high temperature and humidity testing. The steam generation process is not performed simultaneously with the high temperature test process and the low temperature test process.

[0035] The filter assembly 41 includes: a rotating drive member b411, which is installed in the water tank 403; a rotating disk 412, which is installed at the output end of the rotating drive member b411; a filter screen 413, wherein a plurality of filter screens 413 are arranged on the rotating disk 412; a flow pipe 400, which is arranged in the water tank 403; a discharge assembly 42, which is arranged in the water tank 403; and a cleaning assembly 43, which is arranged in the water tank 403.

[0036] The unloading assembly 42 includes: a slide 4121, multiple slides 4121 are opened on the rotating disk 412; a slider 421, the slider 421 is slidably set in the slide 4121; a mounting groove 4211 is opened in the slider 421; a filter 413 is arranged in the mounting groove 4211; an elastic connecting member c422, the elastic connecting member c422 is arranged between the slide 4121 and the slider 421; a resistance plate 423, the resistance plate 423 is installed on one side of the slider 421; a rotating driving member c424, the rotating driving member c424 is installed in the water tank 403; a swing arm 425, the swing arm 425 is installed at the output end of the rotating driving member c424, and a connecting frame 426 is installed in the water tank 403, a stabilizing groove 4261 is opened on the connecting frame 426, and chamfers are opened on both sides of the stabilizing groove 4261.

[0037] 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.

[0038] 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; 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.

[0039] 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.

[0040] 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; 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; The distance between the moving plate 432 and the sliding plate 435 is adjusted so that the bottoms of the cleaning needles b440 and a433 are flush, and the linear drive member a431 drives the cleaning needles a433 and b440 to move downward and penetrate all the filter holes on the filter screen 413, so as to correct all the filter holes on the filter screen 413 and prevent the filter holes from deforming and affecting the filtering effect. It should be noted that the cleaning needles a433 and b440 are square needles with a conical front end to facilitate penetrating the filter holes, which are square holes.

[0041] Embodiment 3: This embodiment provides a test method for a fuel cell high and low temperature test device, comprising the following steps: Step 1, ventilation process: when testing the fuel cell, two groups of test equipment are set, and the two groups of test equipment are connected to the fuel cell respectively, one group is used to introduce oxygen, and the other group 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 exhaust pipe 211 through the exhaust pipe 208; Step 2, high temperature test process: in the initial state, the conductive head 323 corresponds to the straight tube 3021, and under the elastic force of the elastic connector a322, the conductive head 323 is driven to contact the straight tube 3021, and the battery 306 supplies power to both ends of the conical electric heating tube 302, and the conical electric heating tube 302 is powered on for heating, and the gas in the intake pipe 201 is passed into the shell 301 for heating, and the heated gas is passed into the fuel cell through the inlet pipe 205 for high temperature testing; Step 3, low temperature test process: the rotating driving member a309 drives the rotating rod 310 to rotate, and due to the meshing of the gear a311 and the gear ring 312, the rotating ring 303 is driven to rotate, driving the conductive head 323 to leave the straight tube 3021, and the conical electric heating tube 302 is powered off and stops heating; The fixed sleeve b313 is driven to move to the straight pipe 3021. At this time, the pipe a316 is connected with the straight pipe 3021. The cold air in the low temperature box 314 flows into the conical electric heating pipe 302 through the pipe a316 and the straight pipe 3021. The gas in the air inlet pipe 201 is passed into the shell 301 for cooling. 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 b313 through the pipe a316, enters the arc groove 3172 and the flow groove 3171 along the entry groove b3131, and then flows into the receiving groove 3043 through the entry groove a3042, and then enters the cooling groove 3051 through the connecting pipe 318; 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; 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; 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; 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; 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; 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; 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; 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; Adjust the distance between the moving plate 432 and the sliding plate 435 to make the bottoms of the cleaning needles b440 and a433 flush. The linear drive member a431 drives the cleaning needles a433 and b440 to move downward and penetrate all the filter holes on the filter net 413 to correct all the filter holes on the filter net 413 to avoid deformation of the filter holes affecting the filtering effect.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should 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 rack (1); the exhaust pipe (208) is provided with 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); The high and low temperature alternating mechanism (3) is arranged on the air intake pipe (201).

2. A fuel cell high and low temperature testing device according to claim 1, characterized in that: 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); Rotating rings (303), two rotating rings (303) are rotatably arranged outside the housing (301); A fixed sleeve a (304), the fixed sleeve a (304) being mounted on the rotating ring (303); A storage box (305), the storage box (305) being mounted on the housing (301); A storage battery (306), the storage battery (306) is installed on the storage box (305), and the storage battery (306) is connected to the fixing sleeve a (304) via a wire (307).

3. A fuel cell high and low temperature testing device according to claim 2, 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).

4. A fuel cell high and low temperature testing device according to claim 3, characterized in that: 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).

5. A fuel cell high and low temperature testing device according to claim 4, characterized in that: 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).

6. A fuel cell high and low temperature testing device according to claim 5, 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).

7. A fuel cell high and low temperature testing device according to claim 6, 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).

8. A fuel cell high and low temperature testing device according to claim 7, 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).

9. A fuel cell high and low temperature testing device according to claim 8, 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.

10. The test method of a fuel cell high and low temperature test device according to claim 9, 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.

Images