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CN-121992449-A - PEM (PEM) electrolytic tank assembly equipment and assembly method thereof

CN121992449ACN 121992449 ACN121992449 ACN 121992449ACN-121992449-A

Abstract

The invention relates to PEM (PEM) electrolytic tank assembly equipment which comprises an assembly table, wherein a plurality of screw rod sliding tables are arranged on the assembly table, each screw rod sliding table is provided with a bent arm caliper, the bent arm caliper clamps the periphery of a positioning column at the corresponding side, the positioning column can move back and forth relative to the assembly table under the drive of the screw rod sliding table, a positioning groove is formed in the periphery of the positioning column along the axis direction, a laser calibrator is arranged on the assembly table right in front of the positioning groove, the perpendicularity of the positioning column is judged through the linear coincidence degree of laser of the laser calibrator and the positioning groove, the PEM electrolytic tank comprises a cathode composite plate, a cathode current collecting plate, a groove core, an anode current collecting plate and an anode composite plate, positioning holes are formed in the cathode composite plate and the anode composite plate and are in plug-in fit with the positioning column, and the peripheral edges of the cathode current collecting plate, the groove core and the periphery of the anode current collecting plate are abutted against the inner side of the positioning column. The perpendicularity of the positioning column is monitored in real time in the assembly process, and the problem caused by assembly accuracy can be effectively avoided.

Inventors

  • JIANG CHENG
  • LUO TAO

Assignees

  • 无锡威孚高科技集团股份有限公司

Dates

Publication Date
20260508
Application Date
20260129

Claims (8)

  1. 1. The PEM electrolytic cell assembling equipment is characterized by comprising an assembling table (2), wherein a plurality of screw rod sliding tables (1) are arranged on the assembling table (2), bent arm calipers (11) are arranged on each screw rod sliding table (1), the periphery of one positioning column (4) on the corresponding side is clamped by each bent arm calipers (11), and the positioning column (4) can move back and forth relative to the assembling table (2) under the driving of the screw rod sliding table (1); the periphery of each positioning column (4) is provided with a positioning groove (47) along the axis direction, a laser calibrator (3) is arranged on the assembly table (2) right in front of the positioning groove (47), and the perpendicularity of the positioning column (4) is judged through the linear coincidence degree of laser of the laser calibrator (3) and the positioning groove (47); The PEM electrolytic tank (5) comprises a cathode composite plate, a cathode current collecting plate (53), a tank core (54), an anode current collecting plate (55) and an anode composite plate which are sequentially arranged from bottom to top, wherein positioning holes are formed in positions of the cathode composite plate and the anode composite plate, which correspond to positioning columns (4), the positioning holes are in plug-in fit with the positioning columns (4) which correspond to the positioning holes, and the cathode current collecting plate (53), the tank core, the peripheral edge of the anode current collecting plate (55) and the inner sides of the positioning columns (4) are propped against each other.
  2. 2. PEM electrolyzer mounting equipment according to claim 1 characterized in that the positioning columns (4) comprise six, in order a first positioning column (41), a second positioning column (42), a third positioning column (43), a fourth positioning column (44), a fifth positioning column (45), a sixth positioning column (46), the first positioning column (41) and the sixth positioning column (46) are arranged at the lower side of the mounting table (2), the third positioning column (43), the fourth positioning column (44) are arranged at the upper side of the mounting table (2), and the second positioning column (42) and the fifth positioning column (45) are arranged at the left side and the right side of the mounting table (2) separately.
  3. 3. PEM electrolyser assembly device according to claim 1, wherein said cathode composite plate comprises a cathode end plate (51) and a cathode insulating plate (52), said cathode insulating plate (52) being arranged between the cathode end plate (51) and the cathode collector plate (53), said anode composite plate comprising an anode insulating plate (56) and an anode end plate (57), said anode insulating plate (56) being arranged between the anode collector plate (55) and the anode end plate (57), the cell core (54) comprising a plurality of bipolar plates and a membrane electrode arranged between two adjacent bipolar plates.
  4. 4. A PEM electrolyser assembly device as in claim 3, wherein a plurality of conical bosses (21) are provided in the middle of the assembly table (2), conical grooves (511) are provided on the cathode end plate (51) corresponding to the conical bosses (21), the shape of the conical bosses (21) is adapted to the shape of the conical grooves (511), and the conical bosses (21) are in snap fit with the conical grooves (511) provided correspondingly.
  5. 5. PEM electrolyser fitting arrangement according to claim 4, wherein said conical boss (21) has a diameter of 25-30mm and a height of 25-30mm.
  6. 6. A PEM electrolyser assembly device as in claim 3, wherein the shape of the positioning grooves (47) is triangular, the positioning holes of the cathode end plate (51) are provided with triangular positioning projections (512) corresponding to the positioning grooves (47), the shape of the positioning projections (512) is adapted to the shape of the positioning grooves (47), and the positioning projections (512) are in snap fit with the positioning grooves (47) correspondingly arranged.
  7. 7. PEM electrolyser assembly device according to claim 6, characterized in that said positioning grooves (47) have a depth of 2-3mm and an included angle of 20-30 °.
  8. 8. Assembly method applied to a PEM electrolyser assembly device according to any of the claims 1-7, characterized in that it comprises the following steps: s1, placing a cathode end plate (51) on an assembly table (2), and clamping a conical groove of the cathode end plate with a conical boss (21) on the assembly table (2); S2, inserting a first positioning column (41), a second positioning column (42) and a sixth positioning column (46) into a positioning hole of a cathode end plate (51), clamping a positioning groove (47) and a positioning protrusion (512) to fix the angle of a positioning column (4), and synchronously installing a screw sliding table (1) and a laser calibrator (3) corresponding to the first positioning column (41), the second positioning column (42) and the sixth positioning column (46) in place; S3, opening a laser calibrator (3), calibrating the verticality of a first positioning column (41), a second positioning column (42), a sixth positioning column (46) and an assembly table (2), and moving a bent arm caliper (11) by rotating a screw sliding table (1) so as to drive a corresponding positioning column (4) to move, wherein when the laser of the laser calibrator (3) is completely coincident with the straight line of a positioning groove (47) of the corresponding positioning column, the verticality of the positioning column (4) meets the requirement; S4, sequentially sleeving a cathode insulating plate (52) and a cathode current collecting plate (53) on a first positioning column (41), a second positioning column (42) and a sixth positioning column (46), and calibrating the verticality of the positioning columns through a laser calibrator (3) and a screw sliding table (1); S5, installing a fifth positioning column (55) and a corresponding laser calibrator (3) in place, alternately stacking bipolar plates and membrane electrodes on a cathode current collecting plate (53) to form a groove core (54), controlling the edges of the bipolar plates and the membrane electrodes to be close to the positioning column, installing and calibrating a third positioning column (53), a fourth positioning column (54) and the corresponding laser calibrator (3) in place, and using a feeler gauge to further check the perpendicularity of the stacked groove core; S6, after the cell cores are stacked, removing the third positioning column (43), the fourth positioning column (44) and the fifth positioning column (45), sequentially installing an anode current collecting plate (55), an anode insulating plate (56) and an anode end plate (57) on the cell cores, finally installing the third positioning column (43), the fourth positioning column (44) and the fifth positioning column (45), checking the perpendicularity of the cell cores through a feeler gauge, and completing the assembly of the PEM electrolytic cell (5) when the perpendicularity of the cell cores meets the set requirement.

Description

PEM (PEM) electrolytic tank assembly equipment and assembly method thereof Technical Field The invention belongs to the field of hydrogen production by water electrolysis, and particularly discloses PEM (PEM) electrolytic tank assembly equipment and an assembly method thereof. Background The assembly of the electrolytic cell mainly relates to the assembly of structural components including a cathode end plate, an insulating plate, a current collecting plate and a cell core component including a bipolar plate, a sealing component, a gas diffusion layer and a membrane electrode. The cell core is generally integrated with the bipolar plate, the sealing member and the gas diffusion layer before the stacking process, so that the cell core can be simplified into a stack of the membrane electrode and the bipolar plate assembly. The stacking accuracy of the cell core directly affects the performance of the electrolytic cell, and as the gas diffusion layers are contained in the component parts of the bipolar plate assembly and directly contact with the membrane electrode, interference can occur if the assembly accuracy is poor, the performance is affected slightly, and the membrane electrode is seriously damaged. The existing assembly method is more to use the outer positioning baffle plate, the inner positioning column and the like to position when stacking, the requirement on the perpendicularity of the positioning surface and the bottom surface of the outer positioning baffle plate is high, and the perpendicularity of the positioning surface can be poor in the long-time use process, so that the assembly precision is poor, besides, the problem is difficult to find in time through visual inspection in regular detection, the straightness of the inner positioning column is difficult to control due to the fact that the straightness of the inner positioning column is difficult to guarantee. In order to ensure that the stacking precision of the slot core piece is high enough during the assembly of the electrolytic tank, the patent provides an assembly tool and an assembly method, the slot core is stacked after the accurate verticality calibration is carried out on an external positioning column through a lead screw sliding block, whether the verticality changes is monitored in real time in the stacking process, and the positioning column used in the patent can replace external positioning and internal positioning components with traditional meanings. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides PEM electrolytic cell assembly equipment, which monitors the verticality of a positioning column in real time in the assembly process and ensures the assembly precision of an electrolytic cell. The technical scheme adopted by the invention is that the PEM electrolytic tank assembly equipment comprises an assembly table, wherein a plurality of screw rod sliding tables are arranged on the assembly table, each screw rod sliding table is provided with a bent arm caliper, each bent arm caliper clamps the periphery of one positioning column on the corresponding side, and the positioning column can move back and forth relative to the assembly table under the drive of the screw rod sliding table; the periphery of each positioning column is provided with a positioning groove along the axis direction, a laser calibrator is arranged on an assembly table right in front of the positioning groove, and the perpendicularity of the positioning column is judged through the linear coincidence degree of laser of the laser calibrator and the positioning groove; The PEM electrolytic tank comprises a cathode composite plate, a cathode current collecting plate, a tank core, an anode current collecting plate and an anode composite plate which are sequentially arranged from bottom to top, wherein positioning holes are formed in the positions, corresponding to positioning columns, of the cathode composite plate and the anode composite plate, the positioning holes are in plug-in fit with the positioning columns which are correspondingly arranged, and the peripheral edges of the cathode current collecting plate, the tank core and the anode current collecting plate are propped against the inner sides of the positioning columns. Preferably, the PEM electrolyzer assembling device, wherein the positioning columns comprise six positioning columns, namely a first positioning column, a second positioning column, a third positioning column, a fourth positioning column, a fifth positioning column and a sixth positioning column, the first positioning column and the sixth positioning column are arranged at the lower side of the assembling table, the third positioning column and the fourth positioning column are arranged at the upper side of the assembling table, and the second positioning column and the fifth positioning column are respectively arranged at the left side and the right side of the assembling table. Pre