CN111812365B

CN111812365B - Fuel cell internal resistance test fixture with balanced clamping force adjustment

Info

Publication number: CN111812365B
Application number: CN202010918514.0A
Authority: CN
Inventors: 杨华; 徐良华; 蔡林根
Original assignee: Aideman Hydrogen Energy Equipment Co ltd
Current assignee: Aideman Hydrogen Energy Equipment Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2020-11-24
Anticipated expiration: 2040-09-04
Also published as: CN111812365A

Abstract

The invention discloses a fuel cell internal resistance testing clamp with balanced clamping force adjustment, which relates to the technical field of fuel cells and comprises a workbench, four supporting columns and a mounting plate, wherein the workbench is provided with a driving mechanism, an upper fixing mechanism and a lower fixing mechanism, an electrolyte membrane moving mechanism is arranged between the upper fixing mechanism and the lower fixing mechanism, a transmission mechanism is arranged between the electrolyte membrane moving mechanism and the upper fixing mechanism, the upper fixing mechanism and the lower fixing mechanism are identical in structure and respectively comprise a fixed seat, two limiting assemblies, two pressing assemblies and two adjusting assemblies, a fixed groove is formed in the fixed seat, sliding grooves are respectively arranged on two sides of the fixed groove, and a current collecting plate and a electrode plate which are fixedly connected together are respectively arranged in each fixed groove. The invention ensures that the electrolyte membrane is always positioned in the middle of the two electrode plates through the transmission mechanism, ensures that the two electrode plates have the same pressure on the electrolyte membrane, improves the test accuracy, is convenient to disassemble the electrode plates and improves the working efficiency.

Description

Fuel cell internal resistance test fixture with balanced clamping force adjustment

Technical Field

The invention relates to the technical field of fuel cells, in particular to a fuel cell internal resistance testing clamp with balanced clamping force adjustment.

Background

Chinese patent No. CN102323454B discloses a fuel cell test fixture and an assembling method thereof, the apparatus includes: the device comprises a walking and pressing mechanism, a fixed outer frame, an upper insulating plate, a lower insulating plate, a bipolar plate integrating a collector plate and a guide dovetail groove plate, wherein the walking and pressing mechanism comprises a pressing table and a positioning head and is fixed on the fixed outer frame; the upper insulating plate is fixed on the pressing table, and the lower insulating plate is fixed on the fixed outer frame; the bipolar plate of the integrated collector plate comprises an upper polar plate and a lower polar plate of the integrated collector plate, the upper polar plate of the integrated collector plate is fixed in the upper insulating plate, and the lower polar plate of the integrated collector plate is fixed in the lower insulating plate; the guide dovetail groove plate is fixed on the fixed outer frame, and the pressing table is embedded in the guide dovetail groove plate. The invention solves the clamping problem of the electrolyte membrane in the conductivity and single cell performance test, and simultaneously becomes a general fuel cell electrolyte membrane conductivity and single cell performance test clamp through design fine adjustment.

However, the above patent has the following disadvantages in the actual use. Firstly, carrying out a first treatment; the operation of the electrolyte membrane under no-pressure was also tested during the actual test. However, in the adjustment process of the above patent, when the bipolar plate and the electrolyte membrane are tested in an operation state under a low pressure condition, since the electrolyte membrane is influenced by gravity, the contact effect between the electrolyte membrane and the electrode plate at the upper end and the contact effect between the electrolyte membrane and the electrode plate at the lower end are different, and the difference is larger when the pressure is smaller, thereby influencing the actual detection result. Secondly, performing secondary drying; in the above patent, it is mentioned that in actual operation, "it is necessary to perform corresponding shape design and processing on the surfaces of the bipolar plate 6 of the integrated current collecting plate 5 which contact the single cell membrane electrodes up and down according to actual test items". However, the bipolar plate in the above invention needs to be fixed by a large number of bolts during the assembly and disassembly, which results in complicated assembly and disassembly steps and affects the working efficiency.

Disclosure of Invention

The invention aims to provide a fuel cell internal resistance test fixture with balanced clamping force adjustment, which aims to solve the technical problems that the pressure adjustment causes inaccurate test results and inconvenient replacement of bipolar plates in the prior art.

The invention provides a fuel cell internal resistance test fixture with balanced clamping force adjustment, which comprises a workbench, four support columns arranged on the workbench and a mounting plate fixed by the four support columns, wherein the upper end of the workbench is also provided with a driving mechanism, an upper fixing mechanism and a lower fixing mechanism, the upper fixing mechanism is arranged on the driving mechanism, the lower fixing mechanism is arranged right below the upper fixing mechanism, the lower fixing mechanism is arranged at the upper end of the workbench, an electrolyte membrane moving mechanism is arranged between the upper fixing mechanism and the lower fixing mechanism, a transmission mechanism for enabling the electrolyte membrane moving mechanism and the upper fixing mechanism to synchronously move is arranged between the electrolyte membrane moving mechanism and the upper fixing mechanism, the upper fixing mechanism and the lower fixing mechanism have the same structure and respectively comprise a fixed seat, two limiting assemblies, two pressing assemblies and two adjusting assemblies, a fixed groove is arranged in the fixed seat, the both sides of fixed slot all are equipped with the sliding tray, two the restriction subassembly is the symmetry and sets up in the both sides of fixed slot, two compress tightly the one end that the subassembly set up at the fixed slot, two the adjusting part cooperatees with two respectively, every all be equipped with fixed connection's current collection board and plate electrode together in the fixed slot, the both sides of plate electrode all with sliding tray sliding fit.

Further, actuating mechanism is including driving actuating cylinder and four drive guide arms, it runs through the mounting panel to drive actuating cylinder to be vertical setting on the mounting panel and drive the output of actuating cylinder, go up fixed establishment and the output fixed connection who drives actuating cylinder, four equal vertical settings of drive guide arm are on the workstation and fixed establishment and four drive guide arm sliding fit.

Further, electrolyte membrane moving mechanism includes that two symmetries set up the removal subassembly in last fixed establishment both sides, every the removal subassembly all includes removal frame, two gag lever posts and two removal guide arms, two remove the guide arm and be vertical setting on the workstation, removal frame and two removal guide arm sliding fit, two gag lever posts all with the one end fixed connection of removal frame and leave the passageway that supplies the electrolyte membrane to remove between two gag lever posts.

Further, every the both ends of gag lever post all are equipped with the chamfer, every the both ends of gag lever post all are equipped with the drive wheel.

Further, the transmission mechanism is provided with two, two the transmission mechanism respectively with two removal subassemblies one-to-one cooperation, every the transmission mechanism all includes driving frame, transmission shaft, first gear, second gear, first rack and second rack, the driving frame is installed in one side of last fixed establishment, the transmission shaft is installed on the driving frame, first gear and second gear all overlap and are established on the transmission shaft, first rack sets up in one side of the support column that corresponds and first rack and first gear engagement, the second rack is vertical setting in the upper end of moving the frame, and second rack and second gear engagement, first rack and second rack are located the homonymy of transmission shaft and the drive ratio of first gear and second gear is 2: 1.

Furthermore, the restriction subassembly includes restriction groove, restriction piece and restriction spring, the restriction groove sets up on the lateral wall of sliding tray, the restriction piece is installed in the restriction inslot and sliding fit between the two, the restriction spring is installed in the bottom of restriction groove and the one end and the restriction piece fixed connection of restriction spring, the one end of restriction piece is equipped with the inclined plane, the opposite side of restriction piece is equipped with the pull rod that extends to the fixing base outside.

Further, the compressing assembly comprises a compressing groove, a compressing block, a compressing spring and a compressing guide rod, the compressing groove is formed in one end of the fixing groove, the compressing spring is installed in the compressing groove, the compressing block is in sliding fit with the compressing groove, one end of the compressing block is fixedly connected with the compressing spring, one end of the compressing guide rod is fixedly connected with the compressing block, and a compressing guide groove in sliding fit with the compressing guide rod is formed in one side of the fixing groove.

Further, adjusting part includes regulating block, adjusting screw rod and knob, the regulating block is located and compresses tightly inslot and both sliding fit, regulating block and pressure spring's one end fixed connection, adjusting screw rod's one end is rotated with the regulating block and is connected, the side that compresses tightly the groove be equipped with rather than the intercommunication and with adjusting screw rod screw-thread fit's screw hole, adjusting screw rod's one end is installed to the knob.

Compared with the prior art, the invention has the beneficial effects that:

firstly, when the invention works, when the upper fixing mechanism moves downwards for a certain distance, the electrolyte moving mechanism moves downwards for half of the moving distance of the upper fixing mechanism under the action of the transmission mechanism, so that the electrolyte membrane is always positioned in the middle of the two electrode plates, and the pressure of the electrolyte membrane are the same, thereby preventing the situation that when the pressure is too small, the electrolyte membrane is in good contact with the lower electrode plate and is not in good contact with the upper electrode plate due to the influence of gravity, so that the accuracy of a test result is influenced.

Secondly, when the electrode plate that the installation corresponds and the current collection board, earlier with both fixed connection, then with its propelling movement to the fixed slot in, extrude the restriction inslot with two restriction pieces earlier, after the electrode plate passes through the middle part of two restriction pieces completely, the restriction piece stretches out the restriction groove under the effect of spring, and then with the inside of electrode plate restriction at the fixed slot, when dismantling electrode plate and current collection board, the pulling pull rod for the restriction piece shrink, later with electrode plate and current collection board take out can. Through the steps, the steps of the replacement process of the electrode plate and the current collecting plate are simple, the operation is convenient, and the test efficiency of the device is improved.

Thirdly, because the limiting assembly does not directly act with the electrode plate, the electrode plate can shake in the fixing groove in the fixing process, and at the moment, one end of the pressing block presses one side of the electrode plate through the thrust of the pressing spring, so that the other side of the electrode plate is abutted against the limiting block, the electrode plate is firmly fixed in the fixing groove, and the stability of the electrode plate installation is improved.

Fourthly, if the pressure of the pressing assembly on the electrode plate is insufficient in the working process, the electrode plate can push the pressing spring to contract in the detection process, and further when the position of the electrode plate moves, the adjusting threaded rod is driven to rotate through the rotating knob, so that the position of the adjusting block in the pressing groove is changed, the pressure on the pressing spring is increased, the pressure of the pressing spring on the electrode plate is further increased, the electrode plate is prevented from moving, and the testing accuracy is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is a front view of the present invention;

FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;

fig. 6 is an enlarged view at D in fig. 5.

Reference numerals:

the electrolytic cell electrolyte membrane electrode assembly comprises a workbench 1, a support column 2, a mounting plate 3, a driving mechanism 4, a driving cylinder 41, a driving guide rod 42, an upper fixing mechanism 5, a fixed seat 51, a fixed groove 511, a sliding groove 512, a limiting component 52, a limiting groove 521, a limiting block 522, a limiting spring 523, an inclined plane 524, a pull rod 525, a pressing component 53, a pressing groove 531, a pressing block 532, a pressing spring 533, a pressing guide rod 534, an adjusting component 54, an adjusting block 541, an adjusting threaded rod 542, a knob 543, a lower fixing mechanism 6, an electrolyte membrane moving mechanism 7, a moving frame 71, a limiting rod 72, a moving guide rod 73, a channel 74, a chamfer 75, a driving wheel 76, a transmission mechanism 8, a transmission frame 81, a transmission shaft 82, a first gear 83, a second gear 84, a first rack 85, a second rack 86, an electrode plate.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, a fuel cell internal resistance test fixture with balanced clamping force adjustment comprises a workbench 1, four support columns 2 mounted on the workbench 1, and a mounting plate 3 fixed by the four support columns 2, wherein the upper end of the workbench 1 is further provided with a driving mechanism 4, an upper fixing mechanism 5 and a lower fixing mechanism 6, the upper fixing mechanism 5 is mounted on the driving mechanism 4, the lower fixing mechanism 6 is arranged under the upper fixing mechanism 5, the lower fixing mechanism 6 is mounted at the upper end of the workbench 1, an electrolyte membrane moving mechanism 7 is arranged between the upper fixing mechanism 5 and the lower fixing mechanism 6, a transmission mechanism 8 for enabling the electrolyte membrane moving mechanism 7 and the upper fixing mechanism 5 to move synchronously is arranged between the electrolyte membrane moving mechanism 7 and the upper fixing mechanism 5, the upper fixing mechanism 5 and the lower fixing mechanism 6 are identical in structure and respectively comprise a fixing base 51 and two limiting assemblies 52, The two pressing assemblies 53 and the two adjusting assemblies 54 are arranged in the fixed seat 51, fixing grooves 511 are arranged on two sides of the fixing grooves 511, sliding grooves 512 are arranged on two sides of the fixing grooves 511, the two limiting assemblies 52 are symmetrically arranged on two sides of the fixing grooves 511, the two pressing assemblies 53 are arranged at one end of the fixing grooves 511, the two adjusting assemblies 54 are respectively matched with the two pressing assemblies 53, each fixing groove 511 is internally provided with a current collecting plate 9 and an electrode plate 10 which are fixedly connected together, and two sides of the electrode plate 10 are in sliding fit with the sliding grooves 512; when the invention works, when the driving mechanism 4 works to adjust the pressure between the upper fixing mechanism 5 and the lower fixing mechanism 6, the electrolyte membrane moving mechanism 7 can synchronously move under the coordination of the transmission mechanism 8, so that the electrolyte membrane moving mechanism 7 is always positioned in the middle of the upper fixing mechanism 5 and the lower fixing mechanism 6, the electrolyte membrane moving mechanism 7 drives the electrolyte membrane to be always positioned in the middle of the upper fixing mechanism 5 and the lower fixing mechanism 6, thus the pressure of the upper fixing mechanism 5 and the lower fixing mechanism 6 on the electrolyte membrane is always the same, the contact difference between the upper fixing mechanism 5 and the lower fixing mechanism 6 and the electrolyte membrane is reduced, and the accuracy of the detection result is improved, in addition, when the invention needs to replace electrode plates 10 with different contact surfaces, the bolt fixing structure in the prior art is omitted through the coordination of the limiting component 52 and the pressing component 53, a quick change of the electrode plate 10 can be achieved.

Referring to fig. 1 and 4, the driving mechanism 4 includes a driving cylinder 41 and four driving guide rods 42, the driving cylinder 41 is vertically disposed on the mounting plate 3, an output end of the driving cylinder 41 penetrates through the mounting plate 3, the upper fixing mechanism 5 is fixedly connected with the output end of the driving cylinder 41, the four driving guide rods 42 are vertically disposed on the worktable 1, and the fixing mechanism is in sliding fit with the four driving guide rods 42; the driving cylinder 41 is used for driving the upper fixing mechanism 5 to move downwards, so that the upper fixing mechanism 5 and the lower fixing mechanism 6 clamp the electrolyte membrane, and then detection is carried out, and the driving guide rod 42 is used for limiting the moving direction of the upper fixing mechanism 5.

Referring to fig. 1 and 3, the electrolyte membrane moving mechanism 7 includes two moving assemblies symmetrically disposed on two sides of the upper fixing mechanism 5, each moving assembly includes a moving frame 71, two limiting rods 72 and two moving guide rods 73, the two moving guide rods 73 are vertically disposed on the worktable 1, the moving frame 71 is in sliding fit with the two moving guide rods 73, the two limiting rods 72 are both fixedly connected with one end of the moving frame 71, and a channel 74 for moving the electrolyte membrane is left between the two limiting rods 72; in operation, the two sides of the electrolyte membrane are placed between the two limiting rods 72, so that the electrolyte membrane is driven to move and adjust by the movement of the moving frame 71.

Referring to fig. 3, chamfers 75 are respectively arranged at two ends of each limiting rod 72, driving wheels 76 are respectively arranged at two ends of each limiting rod 72, and when the chamfers 75 are arranged, the opening of the channel 74 is enlarged, so that the electrolyte membrane can be conveniently moved into the channel 74.

Referring to fig. 2, two transmission mechanisms 8 are provided, two transmission mechanisms 8 are respectively matched with two moving components in a one-to-one correspondence manner, each transmission mechanism 8 comprises a transmission frame 81, a transmission shaft 82, a first gear 83, a second gear 84, a first rack 85 and a second rack 86, the transmission frame 81 is installed at one side of the upper fixing mechanism 5, the transmission shaft 82 is installed on the transmission frame 81, the first gear 83 and the second gear 84 are both sleeved on the transmission shaft 82, the first rack 85 is arranged at one side of the corresponding support column 2, the first rack 85 is meshed with the first gear 83, the second rack 86 is vertically arranged at the upper end of the movable frame 71, and the second rack 86 is meshed with the second gear 84, the first rack 85 and the second rack 86 are positioned on the same side of the transmission shaft 82, and the transmission ratio of the first gear 83 to the second gear 84 is 2: 1; in operation, when the upper fixing mechanism 5 moves downward, the transmission frame 81, the first gear 83 and the second gear 84 are driven to move downward together, at this time, the first rack 85 is not moved, the first gear 83 also rotates when moving downward through the meshing between the first gear 83 and the first rack 85, and further the transmission shaft 82 and the second gear 84 are driven to rotate, when the second gear 84 moves downward, the corresponding second rack 86 is driven to move downward, and at the same time, the second gear 84 rotates to drive the second rack 86 to move upward relative to the second gear 84, at this time, since the transmission ratio of the first gear 83 to the second gear 84 is 2:1, when the upper fixing mechanism 5 moves downward by a distance of 2a, the distance of rotation of the outer periphery of the first gear 83 is also 2a, and since the second gear 84 and the first gear 83 are coaxially arranged, the distance of rotation of the outer periphery of the second gear 84 is 1a, the second gear 84 rotates to pull the second rack 86 and the moving frame 71 to move up 1a relative to the second gear 84, and then the second gear 84 moves down 2a in its entirety, so that the moving frame 71 moves down 1a in its entirety, and the moving frame 71 is located at the middle between the upper fixing mechanism 5 and the lower fixing mechanism 6, and the electrolyte membrane is located at the middle between the two electrode plates 10 during the test, so that the electrolyte membrane is located at the middle between the two electrode plates 10 during the pressure adjustment process, and the pressure of the electrolyte membrane is the same as that of the electrolyte membrane, thereby preventing the situation that the contact between the electrolyte membrane and the lower electrode plate 10 is good and the contact between the electrolyte membrane and the upper electrode plate 10 is poor due to the influence of gravity when the pressure is too small, which affects the accuracy of the test result.

Referring to fig. 5, the limiting assembly 52 includes a limiting groove 521, a limiting block 522 and a limiting spring 523, the limiting groove 521 is disposed on a side wall of the sliding groove 512, the limiting block 522 is mounted in the limiting groove 521 and is in sliding fit with the limiting groove, the limiting spring 523 is mounted at the bottom of the limiting groove 521, one end of the limiting spring 523 is fixedly connected with the limiting block 522, one end of the limiting block 522 is provided with an inclined surface 524, and the other side of the limiting block 522 is provided with a pull rod 525 extending to the outside of the fixing base 51; when installing corresponding electrode plate 10 and current collection board 9, earlier with both fixed connection, then in pushing fixed slot 511 with it, extrude restriction piece 522 to restriction groove 521 earlier in, after electrode plate 10 passes through two restriction piece 522's middle part completely, restriction piece 522 stretches out restriction groove 521 under the effect of spring, and then restrict electrode plate 10 in the inside of fixed slot 511, the setting of inclined plane 524 is when electrode plate 10 contradicts with restriction piece 522, extrusion force between each other can be decomposed into the power of two directions by inclined plane 524, the ascending power of one of them direction can be with restricting in piece 522 propelling movement restriction groove 521, when dismantling electrode plate 10 and current collection board 9, pulling pull rod 525, make restriction piece 522 shrink, later with electrode plate 10 and current collection board 9 take out can, convenient operation.

Referring to fig. 6, the pressing assembly 53 includes a pressing groove 531, a pressing block 532, a pressing spring 533 and a pressing guide rod 534, the pressing groove 531 is disposed at one end of the fixing groove 511, the pressing spring 533 is installed in the pressing groove 531, the pressing block 532 is in sliding fit with the pressing groove 531, one end of the pressing block 532 is fixedly connected with the pressing spring 533, one end of the pressing guide rod 534 is fixedly connected with the pressing block 532, and a pressing guide groove in sliding fit with the pressing guide rod 534 is disposed at one side of the fixing groove 511; the setting of extrusion subassembly is because restriction subassembly 52 is not with electrode plate 10 direct action, consequently at fixed in-process, and electrode plate 10 can appear rocking in fixed slot 511, and at this moment, through the thrust of pressure spring 533 for one end of compact heap 532 compresses tightly one side of electrode plate 10, makes the opposite side of electrode plate 10 contradict with restriction piece 522, thereby fixes electrode plate 10 in fixed slot 511 firmly.

Referring to fig. 6, the adjusting assembly 54 includes an adjusting block 541, an adjusting threaded rod 542 and a knob 543, the adjusting block 541 is located in the pressing groove 531, and the adjusting block 541 and the pressing spring 533 are in sliding fit, one end of the adjusting threaded rod 542 is fixedly connected to one end of the pressing spring 533, one end of the adjusting threaded rod 542 is rotatably connected to the adjusting block 541, a threaded hole communicated with the pressing groove 531 and in threaded fit with the adjusting threaded rod 542 is provided at a side of the pressing groove 531, the knob 543 is installed at one end of the adjusting threaded rod 542, if insufficient pressure of the pressing assembly 53 on the electrode plate 10 is detected, the electrode plate 10 can push the pressing spring 533 to contract in the detection process, and when the position of the electrode plate 10 is moved, the adjusting threaded rod 542 is driven to rotate by rotating the knob, so that the position of the adjusting block 541 in the pressing groove 531 is changed, the pressure on the pressing spring 543 is increased, thereby preventing the electrode plate 10 from moving and improving the accuracy of the test.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a fuel cell internal resistance test fixture of clamping-force balanced adjustment which characterized in that: including workstation (1), install four support columns (2) on workstation (1) and through four fixed mounting panel (3) of support column (2), the upper end of workstation (1) still is equipped with actuating mechanism (4), goes up fixed establishment (5) and lower fixed establishment (6), it installs on actuating mechanism (4) to go up fixed establishment (5), fixed establishment (6) set up under last fixed establishment (5) and install the upper end at workstation (1) down fixed establishment (6), it is equipped with electrolyte membrane moving mechanism (7) to go up between fixed establishment (5) and lower fixed establishment (6), be equipped with between electrolyte membrane moving mechanism (7) and last fixed establishment (5) and make drive mechanism (8) of both synchronous movement, it is the same with lower fixed establishment (6) structure and all include fixing base (51) to go up fixed establishment (5) and all include fixing base (51), Two restriction components (52), two compress tightly subassembly (53) and two regulating assembly (54), be equipped with fixed slot (511) in fixing base (51), the both sides of fixed slot (511) all are equipped with sliding tray (512), two restriction component (52) are the symmetry and set up the both sides in fixed slot (511), two compress tightly subassembly (53) and set up the one end in fixed slot (511), two regulating assembly (54) cooperate with two compressing assembly (53) respectively, every all be equipped with current collection board (9) and electrode board (10) that fixed connection is in the same place in fixed slot (511), the both sides of electrode board (10) all with sliding tray (512) sliding fit.

2. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 1, is characterized in that: actuating mechanism (4) are including driving actuating cylinder (41) and four drive guide arm (42), it runs through mounting panel (3) to drive actuating cylinder (41) and be vertical setting on mounting panel (3) and the output that drives actuating cylinder (41), go up fixed establishment (5) and the output fixed connection who drives actuating cylinder (41), four equal vertical settings of drive guide arm (42) are on workstation (1) and fixed establishment and four drive guide arm (42) sliding fit.

3. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 2, is characterized in that: electrolyte membrane moving mechanism (7) include that two symmetries set up the removal subassembly in last fixed establishment (5) both sides, every the removal subassembly all includes removal frame (71), two gag lever post (72) and two removal guide arm (73), two remove guide arm (73) and be vertical setting on workstation (1), removal frame (71) and two removal guide arm (73) sliding fit, two gag lever posts (72) all with the one end fixed connection of removal frame (71) and leave passageway (74) that supply the electrolyte membrane to remove between two gag lever posts (72).

4. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 3, characterized in that: both ends of every gag lever post (72) all are equipped with chamfer (75), every both ends of gag lever post (72) all are equipped with drive wheel (76).

5. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 4, is characterized in that: the two transmission mechanisms (8) are arranged and are respectively matched with the two moving components in a one-to-one correspondence manner, each transmission mechanism (8) comprises a transmission frame (81), a transmission shaft (82), a first gear (83), a second gear (84), a first rack (85) and a second rack (86), the transmission frame (81) is arranged on one side of the upper fixing mechanism (5), the transmission shaft (82) is arranged on the transmission frame (81), the first gear (83) and the second gear (84) are both sleeved on the transmission shaft (82), the first rack (85) is arranged on one side of the corresponding supporting column (2) and the first rack (85) is meshed with the first gear (83), the second rack (86) is vertically arranged at the upper end of the moving frame (71), and the second rack (86) is meshed with the second gear (84), the first rack (85) and the second rack (86) are positioned on the same side of the transmission shaft (82), and the transmission ratio of the first gear (83) to the second gear (84) is 2: 1.

6. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 1, is characterized in that: the limiting assembly (52) comprises a limiting groove (521), a limiting block (522) and a limiting spring (523), the limiting groove (521) is arranged on the side wall of the sliding groove (512), the limiting block (522) is arranged in the limiting groove (521) and is in sliding fit with the limiting groove (521), the limiting spring (523) is arranged at the bottom of the limiting groove (521) and one end of the limiting spring (523) is fixedly connected with the limiting block (522), an inclined plane (524) is arranged at one end of the limiting block (522), and a pull rod (525) extending to the outside of the fixed seat (51) is arranged on the other side of the limiting block (522).

7. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 1, is characterized in that: compress tightly subassembly (53) including compressing tightly groove (531), compact heap (532), pressure spring (533) and compressing tightly guide arm (534), compress tightly the one end that groove (531) set up in fixed slot (511), install in compressing tightly groove (531) pressure spring (533), compact heap (532) and one end and pressure spring (533) fixed connection who compresses tightly groove (531) sliding fit and compact heap (532), the one end and the compact heap (532) fixed connection who compresses tightly guide arm (534), one side of fixed slot (511) is equipped with and compresses tightly guide way that compresses tightly guide arm (534) sliding fit.

8. The fuel cell internal resistance test fixture with the balanced and adjusted clamping force as claimed in claim 7, is characterized in that: adjusting part (54) include regulating block (541), adjusting threaded rod (542) and knob (543), regulating block (541) are located and compress tightly groove (531) and both sliding fit, the one end fixed connection of regulating block (541) and pressure spring (533), the one end and the regulating block (541) of adjusting threaded rod (542) rotate to be connected, the side that compresses tightly groove (531) is equipped with rather than the intercommunication and with adjusting threaded rod (542) screw-thread fit's screw hole, the one end at adjusting threaded rod (542) is installed in knob (543).