CN221019085U - Welding device and electrolytic tank - Google Patents

Abstract

The utility model belongs to the technical field of electrolytic tank processing, and discloses a welding device and an electrolytic tank. The welding device comprises a supporting component, a welding machine and a detecting piece; the support component is used for placing the bipolar plate and the support plate; the welding machine is positioned at one side of the supporting component and comprises a welding host machine and a welding head, the welding head is connected to the welding host machine, and the welding head is used for welding the supporting plate and the bipolar plate; the detecting piece is installed to the welding host computer, and the detecting piece is used for obtaining the welding spot image between backup pad and the bipolar plate, and the detecting piece is connected with the welding host computer communication. The welding device can automatically finish welding between the support plate and the bipolar plate, has higher welding efficiency, and can ensure the consistency of welding quality.

Description

Welding device and electrolytic tank

Technical Field

The utility model relates to the technical field of electrolytic tank processing, in particular to a welding device and an electrolytic tank.

Background

In an electrolytic cell, in order to ensure good conductivity, a bipolar plate in the electrolytic cell and a support plate for supporting an electrode need to be welded; however, since the welding between the support plate and the bipolar plate is generally performed by using an artificial resistance welding method, the welding efficiency is low due to time and labor consumption, and the consistency of the welding quality cannot be ensured due to individual variability of manpower.

Therefore, a welding device and an electrolytic cell are needed to solve the above problems.

Disclosure of utility model

The utility model aims to provide a welding device and an electrolytic tank, which can automatically finish welding between a support plate and a bipolar plate, have higher welding efficiency and can ensure the consistency of welding quality.

To achieve the purpose, the utility model adopts the following technical scheme:

a welding apparatus, comprising:

a support assembly for placing the bipolar plate and the support plate;

The welding machine is positioned on one side of the supporting component and comprises a welding host and a welding head, the welding head is connected to the welding host and is used for welding the supporting plate and the bipolar plate;

The detection piece is installed to the welding host machine and used for obtaining a welding spot image between the supporting plate and the bipolar plate, and the detection piece is in communication connection with the welding host machine.

Alternatively, the detecting member is mounted to the welding host machine through an adjusting assembly, so that the shooting angle of the detecting member on the welding spot image is adjustable relative to the welding host machine.

Alternatively, the adjusting assembly includes:

A first driving member;

The screw rod extends along the X axis and is rotatably arranged on the welding host;

The connecting piece, the one end of connecting piece with the detecting element is connected, the other end of connecting piece with first driving piece is connected.

Alternatively, the adjusting assembly includes:

A first driving member;

The guide rail is arranged on the welding host machine in an extending mode along the X axis, a guide block is arranged on the guide rail, and the first driving piece is in driving connection with the guide block;

And one end of the connecting piece is connected with the detection piece, and the other end of the connecting piece is connected with the guide block.

Alternatively, the connecting piece is connected with the first driving piece through a nut; the nut is sleeved on the screw rod, and the first driving piece is used for driving the nut to move on the screw rod along the X axis.

Alternatively, the connecting piece comprises a connecting rod and a bracket, one end of the connecting rod is connected to the bracket, the detecting piece is hinged to the bracket, and the detecting piece can rotate around the Y axis relative to the bracket and stop at any position.

Alternatively, the connecting rod includes:

The outer rod and the inner rod, one end of the inner rod is arranged in the outer rod in a sliding mode along the Z axis, one end of the outer rod, which is not connected with the inner rod, is connected to the first driving piece, and the other end of the inner rod is connected to the support.

Alternatively, the support assembly includes:

the support platform is positioned below the welding head;

The locating tool is used for locating the bipolar plate and the supporting plate to the supporting platform.

Alternatively, the support assembly further comprises a base and a rotating member, wherein the rotating member is arranged between the base and the support platform, and the rotating member is used for driving the support platform to rotate around the Z axis.

An electrolytic cell comprising a bipolar plate and a support plate, said bipolar plate and said support plate being welded based on a welding device as described above.

The beneficial effects are that:

According to the welding device, the supporting component, the welding machine and the detecting piece which are matched with each other are arranged; when welding is needed, the bipolar plate and the support plate are placed on the support assembly, and then the welding host machine is used for providing welding current for the welding head so that the welding head can weld the support plate and the bipolar plate; after welding is completed, a welding spot image between the support plate and the bipolar plate is obtained through photographing of the detection piece, and welding parameters of the welding host are adjusted according to the obtained welding spot image, so that welding current of the welding head meets preset requirements, subsequent welding quality of the support plate and the bipolar plate can be guaranteed to be good, consistency of welding quality is guaranteed, time and labor are saved, and welding efficiency is high.

Drawings

FIG. 1 is a schematic view of a welding device according to the present utility model;

FIG. 2 is a schematic view of an assembly structure between a welder and an adjustment assembly provided by the present utility model;

Fig. 3 is a schematic diagram of an assembly structure between a connecting rod and a bracket provided by the utility model.

In the figure:

1.A welding machine; 11. welding a host; 12. welding head; 13. a welding frame;

2. a support assembly; 21. a base; 22. a rotating member; 23. a support platform;

3. A detecting member;

4. An adjustment assembly; 41. a first driving member; 42. a screw rod; 43. a connecting rod; 431. an inner rod; 432. an outer rod; 44. a bracket; 45. a hinge shaft;

5. And a controller.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Electrolytic cells are increasingly being concerned and developed as a source of hydrogen energy; wherein, in order to ensure better conductivity, the bipolar plate in the electrolytic tank and the supporting plate for supporting the electrode are required to be welded; however, the conventional welding between the support plate and the bipolar plate usually adopts an artificial resistance welding mode, which is time-consuming and labor-consuming, so that the welding efficiency is low, and the consistency of welding quality cannot be ensured due to the individual variability of manpower.

In order to solve the above problems, a welding device and an electrolytic cell are provided in the present embodiment, the electrolytic cell includes a bipolar plate and a support plate, and the bipolar plate and the support plate are welded by the welding device; specifically, as shown in fig. 1 and 2, the welding apparatus includes a support assembly 2, a welder 1, and a detecting member 3; wherein the support assembly 2 is used for placing a bipolar plate and a support plate; the welding machine 1 is positioned on one side of the supporting component 2, the welding machine 1 comprises a welding frame 13, a welding host 11 and a welding head 12, the welding host 11 is arranged on the welding frame 13, the welding head 12 is connected to the welding host 11, and the welding head 12 is used for welding the supporting plate and the bipolar plate; the detecting piece 3 is arranged on the welding host 11, the detecting piece 3 is used for photographing to obtain an image of a welding spot between the supporting plate and the bipolar plate, and the detecting piece 3 is in communication connection with the welding host 11. In this embodiment, the electrolytic cell may specifically be an alkaline electrolytic cell.

Compared with the prior art, the welding device in the embodiment changes the welding mode of the bipolar plate and the supporting plate; the supporting component 2, the welding machine 1 and the detecting piece 3 which are matched with each other are arranged; when welding is needed, placing the bipolar plate and the support plate on the support assembly 2, and then enabling the welding host 11 to provide welding current for the welding head 12 so as to enable the welding head 12 to weld the support plate and the bipolar plate; after the welding is finished, the welding spot image between the support plate and the bipolar plate is obtained through the detecting piece 3, and the welding parameters of the welding host 11 are adjusted according to the obtained welding spot image, so that the welding current of the welding head 12 meets the preset requirement, the subsequent welding quality of the support plate and the bipolar plate can be guaranteed to be good, the quality of each welded support plate and bipolar plate is good, the consistency of the welding quality can be guaranteed, time and labor are saved, and the welding efficiency is high.

It should be noted that, before welding, the welding head 12 can be pressed down to the support plate and the bipolar plate along the Z-axis relative to the welding host 11 to ensure the subsequent welding effect; moreover, the pressing force of the welding head 12 can be adjusted in real time according to the welding spot image of the detecting piece 3, so that the welding effect of the welding head 12 on the support plate and the bipolar plate is better, and the welding quality is further ensured. Wherein the up and down movement of the welding head 12 relative to the welding host 11 along the Z-axis may be accomplished by a linear cylinder.

That is, the welding parameters of the welding host 11 and the pressing force of the welding head 12 can be adjusted in real time by the welding spot image obtained by photographing the detecting piece 3, so that the welding between the bipolar plate and the supporting plate is firm, the welding quality is ensured to be better, and the nickel plating layer on the surface of the bipolar plate or the supporting plate can be prevented from being broken down in the welding process. In this embodiment, the detecting member 3 may be a CCD camera.

Further, the welding head 12 is a welding head without filler wire, that is, no filler wire is required to be arranged on the welding head 12, so that pollution of the melted filler wire to the electrolytic cell can be avoided, and normal use performance of the electrolytic cell is ensured. In this embodiment, the welding machine 1 may be a resistance welding machine, which has low cost, stable and reliable operation and simple use. In other embodiments, the welder 1 may be other types of welders, as long as the welder 1 using filler wire is not needed, and is not specifically limited herein.

Specifically, as shown in fig. 1 and 2, the detecting element 3 is mounted on the welding host 11 through the adjusting component 4, so that the shooting angle of the detecting element 3 on the welding spot image can be adjusted relative to the welding host 11; with can make detecting element 3 carry out the detection of shooing to the solder joint image of multiple different positions, and then can be applicable to the backup pad and the bipolar plate of multiple different welding positions and shoot the detection for whole welding set's commonality and suitability are better.

Specifically, as shown in fig. 2 and 3, the adjusting assembly 4 includes a first driving member 41, a screw 42, and a connecting member; the screw rod 42 extends along the X axis, and the screw rod 42 is rotatably arranged on the welding host 11; one end of the connecting piece is connected with the detecting piece 3, the other end of the connecting piece is connected with the first driving piece 41, and the connecting piece is connected with the first driving piece 41 through a nut; that is, the nut is screwed on the screw rod 42, the first driving member 41 is connected with the nut in a driving manner, and the first driving member 41 is used for driving the nut to reciprocate on the screw rod 42 along the X axis so as to drive the connecting member and the detecting member 3 to move on the X axis. In this embodiment, the first driving member 41 may be a linear cylinder.

Specifically, the connecting member includes a connecting rod 43 and a bracket 44, one end of the connecting rod 43 is connected to the nut, the other end of the connecting rod 43 is connected to the bracket 44, and the detecting member 3 is hinged to the bracket 44 through a hinge shaft 45, and the detecting member 3 can rotate around the Y-axis with respect to the bracket 44 and stop at any position.

When the position of the detecting piece 3 on the X axis needs to be adjusted, the first driving piece 41 is operated, and the first driving piece 41 drives the nut to move on the screw rod 42 so as to drive the connecting rod 43, the bracket 44 and the detecting piece 3 to reciprocate on the screw rod 42 along the X axis, so that the position of the detecting piece 3 on the X axis is adjusted; when the rotation angle of the detecting member 3 needs to be adjusted, the detecting member 3 is rotated to a proper angle relative to the hinge shaft 45, and then the detecting member 3 is fixed on the bracket 44 through the limiting member, so that the detecting member 3 can be stopped at the angle, and the detecting member 3 can not rotate continuously relative to the hinge shaft 45. The limiting member may be specifically a bolt or a nut, and the specific structure of the limiting member is not specifically limited herein.

In other embodiments, the adjusting assembly 4 may further include a first driving member 41, a guide rail, and a connecting member; the guide rail extends along the X axis and is arranged on the welding host 11, a guide block is arranged on the guide rail, the first driving piece 41 is in driving connection with the guide block, one end of the connecting piece is connected with the detecting piece 3, and the other end of the connecting piece is connected with the guide block; the first driving piece 11 drives the guide block to slide on the guide rail so as to adjust the positions of the connecting piece and the detecting piece 3 on the X axis; the structure of the connector is the same as that of the connector described above, except that one end of the connecting rod 43 of the connector is connected to the guide block. Here, the manner of adjusting the position of the detecting element 3 in the X axis is not limited as long as the position of the detecting element 3 in the X axis can be adjusted.

Further, as shown in fig. 3, the connecting rod 43 includes an outer rod 432 and an inner rod 431, one end of the inner rod 431 is slidably disposed in the outer rod 432 along the Z axis, one end of the outer rod 432 which is not connected to the inner rod 431 is connected to a guide block or nut which is drivingly connected to the first driving member 41, and the other end of the inner rod 431 is connected to the bracket 44; the adjusting component 4 further comprises a second driving piece, the second driving piece is in driving connection with the inner rod 431, the second driving piece is used for driving the inner rod 431 to slide back and forth along the Z axis in the outer rod 432, so that the bracket 44 and the detecting piece 3 can be driven to move up and down along the Z axis through the sliding of the inner rod 431 on the Z axis, and the setting position of the detecting piece 3 on the Z axis can be adjusted. In this embodiment, the second driving member may be a linear cylinder.

By arranging the adjusting component 4 with the structure, the setting positions of the detecting piece 3 on the X axis and the Z axis relative to the welding host 11 can be adjusted, and the rotating angle of the detecting piece 3 around the Y axis relative to the welding host 11 can be adjusted, so that the setting positions and the setting angles of the detecting piece 3 can be matched with the positions of welding spots to be shot, and the good shooting effect of the detecting piece 3 on welding spot images is ensured; and can make the detecting member 3 suitable for shooting detection of a plurality of different solder joint positions.

Specifically, as shown in fig. 1, the support assembly 2 includes a support platform 23 and a positioning tool; wherein the support platform 23 is located below the welding head 12; a plurality of positioning tools are circumferentially arranged on the support platform 23 and are used for positioning the bipolar plate and the support plate on the support platform 23, so that the placement positions of the bipolar plate and the support arm on the support platform 23 are proper and can be kept motionless.

In this embodiment, the positioning tool comprises an electromagnet and an iron pressing sheet, and the electromagnet is mounted on the bottom end surface of the supporting platform 23; the bipolar plate is placed on the support platform 23, and the support plate is placed on the bipolar plate; finally, placing the iron pressing sheet on the supporting plate, electrifying the electromagnet, and adsorbing the iron pressing sheet through electromagnetic ferromagnetism so as to tightly adsorb the bipolar plate and the supporting plate on the supporting platform 23, thereby realizing the positioning of the bipolar plate and the supporting plate on the supporting platform 23, and avoiding the shaking of the bipolar plate and the supporting plate during welding through the magnetic attraction between the iron pressing sheet and the electromagnet; when the welding is finished, the electromagnet is powered off, the iron pressing sheet is taken down, and the bipolar plate and the supporting plate can be taken out from the supporting platform 23.

The support plate and the bipolar plate are positioned in a magnetic adsorption mode, positioning operation is simple and convenient, the support plate and the bipolar plate are convenient to take out, and meanwhile, the positioning effect on the support plate and the bipolar plate can be guaranteed to be good. In other embodiments, the positioning tool may have other positioning structures, as long as the positioning tool can position the bipolar plate and press the support plate against the bipolar plate, which is not limited herein.

Further, as shown in fig. 1, the support assembly 2 further includes a base 21 and a rotating member 22; wherein, the base 21 is fixedly arranged at one side of the welding host 11; the rotating member 22 is connected between the base 21 and the support platform 23, and the rotating member 22 is configured to drive the support platform 23 to rotate about the Z-axis so that the welding head 12 can weld various welding positions on the support plate and the bipolar plate.

Specifically, the rotating member 22 includes a third driving member and a rotating shaft, a fixed end of the third driving member is disposed on the base 21, a driving end of the third driving member is in driving connection with the rotating shaft, and the supporting platform 23 is fixedly disposed on the rotating shaft; when the third driving member is operated, the third driving member drives the rotation shaft to rotate around the Z axis, so as to drive the support platform 23 to rotate around the Z axis. Since the support plate and the bipolar plate are spot-welded, full-welding is not required, and therefore, the third driving member in the present embodiment may be a stepper motor, so that the support platform 23 can be driven to rotate step by the stepper motor.

Further, the welding device also comprises a manipulator, wherein the manipulator is positioned at one side of the welding machine 1 and can magnetically adsorb and grab the bipolar plate, the supporting plate and the positioning tool; specifically, the manipulator grabs the electromagnet to the bottom end surface of the supporting platform 23 for installation, grabs the bipolar plate and the supporting plate to the supporting platform 23 through the manipulator, grabs the iron pressing sheet to the supporting plate, and positions the bipolar plate through magnetic attraction between the iron pressing sheet and the electromagnet and compresses the supporting plate to the bipolar plate; and after welding is finished, the manipulator can grasp the unqualified bipolar plate and the support plate of welding quality to a defective product area, wait for manual treatment, carry the qualified bipolar plate and the support plate of welding quality to a qualified product area, and transfer to the next process, thereby realizing classified storage. Wherein, be provided with the electro-magnet on the manipulator to can realize the magnetism adsorption function of manipulator.

Specifically, as shown in fig. 1 and 2, the welding apparatus further includes a conveyor provided on the detecting member 3 and a controller 5 provided inside the welding frame 13; the transmitter is used for transmitting the welding spot image obtained by photographing the detecting piece 3 to the controller 5, so that the controller 5 can adjust the welding parameters of the welding host 11, and the welding current transmitted to the welding head 12 by the welding host 11 can be ensured to meet the welding requirement; and the controller 5 is also in control connection with the welding head 12, so that the controller 5 controls the pressing force of the welding head 12 to downwards press the position to be welded along the Z axis, and therefore good welding quality can be ensured. The controller 5 is in control connection with the electromagnet so as to be capable of controlling the on-off of the electromagnet through the controller 5; and the controller 5 is also respectively connected with the third driving part and the manipulator in a control way, and the controller 5 can be a PLC (programmable logic controller) specifically. The transmitter and the controller 5 in this embodiment are all common structures in the prior art, and detailed descriptions of specific signal transmission principles of the transmitter and control principles of the controller 5 are omitted herein.

The specific working procedure of the welding device in this embodiment is as follows:

Firstly, grabbing the bipolar plate onto the supporting platform 23 through a manipulator, grabbing the supporting plate onto the bipolar plate, grabbing the iron pressing sheet onto the supporting plate, and electrifying an electromagnet on the bottom end face of the supporting platform 23 so as to position the supporting plate and the bipolar plate on the supporting platform 23 through magnetic attraction between the electromagnet and the iron pressing sheet.

Then, the setting position of the detecting member 3 on the X-axis and the Z-axis is adjusted according to the position to be welded, and the rotation angle of the detecting member 3 about the Y-axis with respect to the bracket 44 is adjusted so that the setting position and the setting angle of the detecting member 3 match the position of the welding spot to be photographed.

Then, the welding head 12 is pressed down to the supporting plate along the Z axis, and the welding host 11 is used for leading the welding head 12 to pass welding current, so that the welding head 12 welds the position to be welded between the supporting plate and the bipolar plate; after the welding is finished, the detecting part 3 is made to carry out photographing detection on the welding spot image, and the detecting part 3 is made to transmit the detected welding spot image to the controller 5 through the transmitter, so that the welding quality can be obtained, the welding parameters of the welding host 11 are adjusted according to the welding quality, and the consistency of the subsequent welding quality is ensured.

Finally, the rotating member 22 is rotated to drive the supporting platform 23 to rotate the next position to be welded on the supporting plate and the bipolar plate to the lower part of the welding head 12, and the above welding and detecting steps are repeated until all the positions to be welded are completely welded.

The welding device in the embodiment realizes automatic welding between the bipolar plate and the supporting plate, effectively ensures the welding quality and greatly improves the welding efficiency; in the welding process, each welding spot on the bipolar plate and the supporting plate is required to be photographed by the detection part 3 when the welding is finished, and the welding spot images are transmitted to the controller 5 through the transmitter, so that the controller 5 can automatically measure the size morphology of the welding spot and compare the size morphology with preset size morphology parameters one by one, and on one hand, the welding quality of the bipolar plate and the supporting plate can be monitored; on the other hand, the welding parameters such as the welding current and the pressing force of the welding head 12 can be adjusted according to the preset size and shape parameters, so that the control of the subsequent welding quality is realized, and the consistency of the welding quality is ensured; meanwhile, the quality of the welding head 12 can be determined according to the characteristics of welding spots, and the welding head 12 can be replaced and maintained in time, so that the welding quality is further ensured.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. Welding set, its characterized in that includes:

-a support assembly (2), the support assembly (2) being for placing a bipolar plate and a support plate;

A welding machine (1) positioned on one side of the support assembly (2), wherein the welding machine (1) comprises a welding host (11) and a welding head (12), the welding head (12) is connected to the welding host (11), and the welding head (12) is used for welding the support plate and the bipolar plate;

The detection piece (3), the detection piece (3) is installed to the welding host (11), the detection piece (3) is used for obtaining the welding spot image between the backup pad and the bipolar plate, and the detection piece (3) with welding host (11) communication connection.

2. Welding device according to claim 1, characterized in that the detection element (3) is mounted to the welding host (11) by means of an adjustment assembly (4) such that the angle of the detection element (3) capturing the weld spot image is adjustable with respect to the welding host (11).

3. Welding device according to claim 2, characterized in that the adjustment assembly (4) comprises:

A first driving member (41);

the screw rod (42) extends along the X axis, and the screw rod (42) is rotatably arranged on the welding host machine (11);

And one end of the connecting piece is connected with the detecting piece (3), and the other end of the connecting piece is connected with the first driving piece (41).

4. Welding device according to claim 2, characterized in that the adjustment assembly (4) comprises:

A first driving member (41);

The guide rail is arranged on the welding host machine (11) in an extending mode along the X axis, a guide block is arranged on the guide rail, and the first driving piece (41) is in driving connection with the guide block;

and one end of the connecting piece is connected with the detecting piece (3), and the other end of the connecting piece is connected with the guide block.

5. A welding device according to claim 3, characterized in that the connecting piece is connected to the first driving piece (41) by means of a nut; the nut is sleeved on the screw rod (42), and the first driving piece (41) is used for driving the nut to move on the screw rod (42) along the X axis.

6. Welding device according to claim 4 or 5, characterized in that the connection piece comprises a connection rod (43) and a bracket (44), one end of the connection rod (43) being connected to the bracket (44), and the detection piece (3) being hinged to the bracket (44), the detection piece (3) being rotatable about the Y-axis relative to the bracket (44) and stopping in either position.

7. Welding device according to claim 6, characterized in that the connecting rod (43) comprises:

an outer rod (432) and an inner rod (431), wherein one end of the inner rod (431) is arranged in the outer rod (432) in a sliding manner along the Z axis, one end of the outer rod (432) which is not connected with the inner rod (431) is connected to the first driving piece (41), and the other end of the inner rod (431) is connected to the bracket (44).

8. Welding device according to claim 1, characterized in that the support assembly (2) comprises:

A support platform (23) located below the welding head (12);

The locating tool is circumferentially arranged on the supporting platform (23) and is used for locating the bipolar plate and the supporting plate to the supporting platform (23).

9. Welding device according to claim 8, characterized in that the support assembly (2) further comprises a base (21) and a rotating member (22), the rotating member (22) being arranged between the base (21) and the support platform (23), the rotating member (22) being adapted to drive the support platform (23) to rotate about the Z-axis.

10. An electrolytic cell, characterized by comprising a bipolar plate and a support plate welded on the basis of a welding device according to any one of claims 1-9.