External positioning tool of electrolytic bath and method for assembling electrolytic bath

Abstract

The invention discloses an external positioning tool of an electrolytic bath and a method for assembling the electrolytic bath, and relates to the related technical field of water electrolysis hydrogen production. The cushion piece is placed on the positioning platform, and the top surface of the cushion piece is a first positioning surface; the positioning assemblies are detachably arranged on the positioning platform, the positioning assemblies are arranged around the cushion piece in a surrounding mode, each positioning assembly comprises a first positioning piece and a second positioning piece, each first positioning piece is provided with a second positioning face, and the second positioning faces are perpendicular to the first positioning faces; all the second positioning surfaces and the first positioning surface are combined to form a positioning space for positioning the electrolytic cell, the second positioning piece is arranged on the first positioning piece in a sliding manner, and in the process that the second positioning piece slides from the top of the first positioning piece to the bottom of the first positioning piece, the second positioning piece can level the side face of a cell core of the positioned electrolytic cell into a plane. By means of the external positioning tool, the dislocation and sealing problems occurring in the stacking process of the electrolytic cell assembly can be reduced, and the product reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production by water electrolysis, and in particular to an external positioning tool for an electrolytic cell and a method for assembling an electrolytic cell. BACKGROUND

[0002] Currently, the mainstream of the electrolytic cell of AEM and PEM electrolytic cell 10 below 10 square meters is to use internal positioning. The mainstream is the positioning structure based on the positioning hole and positioning column in the end plate, insulating plate, current collecting plate and bipolar plate area. The positioning rod is inserted into the positioning hole before stacking, and the above-mentioned parts are stacked and installed through the positioning rod to ensure the positioning accuracy during the stacking process.

[0003] The medium and large electrolytic cell is mainly stacked by multiple layers of double shift, usually more than 50 layers. If the positioning rod is used for fixation, after multiple layers of stacking, due to the cumulative error superposition, the bipolar plate is misaligned, and finally the positioning pin is stuck and cannot be pulled out, affecting production and testing, and the positioning effect is poor, which cannot meet the demand of medium and large stacking. Currently, the mainstream of medium and large electrolytic cell stacking is to use internal positioning and external positioning double positioning to ensure the positioning demand of the electrolytic cell. SUMMARY

[0004] The present application aims to solve one of the above technical problems in the prior art. To this end, the present application provides an external positioning tool for an electrolytic cell.

[0005] The present application also provides a method for assembling an electrolytic cell.

[0006] According to the embodiment of the first aspect of the present application, an external positioning tool for an electrolytic cell is provided, which comprises a positioning platform; a pad placed on the positioning platform, the top surface of the pad being a first positioning surface; a plurality of positioning assemblies detachably arranged on the positioning platform, the positioning assemblies being arranged around the pad, the positioning assembly comprising a first positioning member and a second positioning member, the first positioning member having a second positioning surface, the second positioning surface being perpendicular to the first positioning surface, all the second positioning surfaces and the first positioning surface combining to form a positioning space for positioning the electrolytic cell, the second positioning member being slidingly arranged on the first positioning member, the second positioning member being able to flatten the side surface of the electrolytic cell to be positioned to a plane during the sliding process from the top to the bottom of the first positioning member.

[0007] The aforementioned external positioning fixture for the electrolytic cell has at least the following beneficial effects: When assembling the electrolytic cell, a suitable pad is selected to avoid interference between the positioning platform and the bolts of the electrolytic cell. First, some positioning components are installed on the positioning platform so that the first positioning surface of the first positioning component assembled on the positioning platform can position the adjacent sides of the electrolytic cell's accessories. After the electrolytic cell's accessories are stacked, the remaining positioning components on the positioning platform are assembled so that the resulting positioning space can position and limit the electrolytic cell. Then, the second positioning component located on the same side of the electrolytic cell's core is driven to move. During the process of the second positioning component sliding from the top to the bottom of the first positioning component, the second positioning component can press and flatten the side of the positioned electrolytic cell's core into a plane. The assembly process of the entire electrolytic cell is simple. The first positioning component provides initial positioning and limitation, and the sliding and pressing of the second positioning component ensures the positioning accuracy of the stacked electrolytic cells. This also effectively solves the problem of large cumulative errors in the existing assembly process and avoids sealing failure caused by misalignment of the cell core. The external positioning tooling of this application can effectively reduce misalignment and sealing problems of electrolytic cell components during stacking, and improve the reliability and stability of the product.

[0008] According to the external positioning fixture of the electrolytic cell in the first aspect embodiment of this application, the positioning space is rectangular, and the sides of the positioning space include a first side, a second side, a third side and a fourth side. A set of positioning components is respectively provided on the first side and the third side, and two sets of positioning components are respectively provided on the second side and the fourth side. The positioning components provided on the first side and the third side are located on the central axis of the first side, and the positioning components provided on the second side and the fourth side are close to the first side or the third side.

[0009] According to the external positioning fixture of the electrolytic cell in the first aspect embodiment of this application, the second positioning member has a third positioning surface, the third positioning surface is divided into two halves and located on both sides of the first positioning member, and the third positioning surface is coplanar with the second positioning surface.

[0010] According to the external positioning fixture of the electrolytic cell described in the first aspect of this application, the second positioning member is slidably connected to the first positioning member through a guide rail slider structure.

[0011] According to the external positioning fixture of the electrolytic cell in the first aspect embodiment of this application, the second positioning member includes a first extension and a second extension. Two first extensions are provided, and the two first extensions are respectively fixed to the two sides of the second extension. The first extension is connected to the side of the first positioning member through the guide rail slider structure.

[0012] According to the external positioning tool of the electrolytic cell, the positioning assembly further comprises a third positioning member, the second positioning member is fixed to the third positioning member, and the third positioning member is inserted into the positioning platform.

[0013] According to the external positioning tool of the electrolytic cell, the third positioning member is in a column shape, a mounting surface perpendicular to the first positioning surface is milled on one side of the third positioning member, and the first positioning member is detachably fixed to the mounting surface.

[0014] According to the external positioning tool of the electrolytic cell, the first positioning member is connected to the third positioning member through a bolt.

[0015] According to the external positioning tool of the electrolytic cell, a long groove is arranged on the side of the third positioning member away from the mounting surface, the long groove penetrates the mounting surface, and the bolt is threadedly connected to the side of the first positioning member away from the second positioning surface through the long groove.

[0016] According to the second aspect of the present application, a method for assembling an electrolytic cell is provided, based on the external positioning tool of the electrolytic cell described above, comprising the following steps: The positioning assembly of the third side and the fourth side is removed; The accessories of the electrolytic cell are sequentially placed on the pad for installation, and the two sides of the accessories are respectively abutted against the first side and the second side; After the electrolytic cell is assembled, the positioning assembly of the third side and the fourth side is sequentially installed, and then the second positioning member of the same side is slid to flatten the same side of the cell core into a plane through the sliding press fitting of the second positioning member; After the electrolytic cell is locked, the first positioning member and the second positioning member are removed, and the assembled electrolytic cell is lifted away from the pad.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described below in combination with the drawings and embodiments; Figure 1 is a structural schematic of the external positioning tool of the electrolytic cell according to the embodiment of the present application Figure 1 ; Figure 2 is a structural schematic of the external positioning tool of the electrolytic cell according to the embodiment of the present application Figure 2 ; Figure 3is a structure schematic diagram of the outer positioning tool of the electrolytic cell in the embodiment of the present application Figure 3 ; Figure 4 is a structure schematic diagram of the positioning assembly in the embodiment of the present application Figure 5 is a structure schematic diagram of the second positioning member in the embodiment of the present application Figure 6 is a schematic diagram of the electrolytic cell installed in the outer positioning tool of the electrolytic cell in the embodiment of the present application Figure 1 ; Figure 7 is a schematic diagram of the electrolytic cell installed in the outer positioning tool of the electrolytic cell in the embodiment of the present application Figure 2 .

[0019] The figure mark: positioning platform 100, jack 101, pad 200, positioning assembly 300, third positioning member 310, mounting surface 311, first positioning member 320, second positioning surface 321, second positioning member 330, third positioning surface 3301, first extension 331, second extension 332, guide rail sliding block structure 340, electrolytic cell 400. DETAILED DESCRIPTION

[0020] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0021] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0022] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, above, below, within and the like are understood to include the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0023] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0024] Referring to Figures 1 to 3 The embodiment of the present application provides an external positioning tool of an electrolytic cell, which is used for quick positioning and stack assembly of the electrolytic cell 400. The external positioning tool of the electrolytic cell comprises a positioning platform 100, a pad 200 and a plurality of sets of positioning assemblies 300.

[0025] The positioning platform 100 serves as a reference of the whole tool, and the remaining parts are arranged on the positioning platform 100. The pad 200 is placed on the top surface of the positioning platform 100, the top surface of the pad 200 is a first positioning surface, the first positioning surface is parallel to the horizontal surface, and the plurality of sets of positioning assemblies 300 are detachably arranged on the positioning platform 100. The positioning assemblies 300 surround the pad 200, and the positioning assemblies 300 comprise first positioning members 320 and second positioning members 330. The first positioning members 320 have second positioning surfaces 321, the second positioning surfaces 321 are perpendicular to the first positioning surface, and all the second positioning surfaces 321 and the first positioning surface combine to form a positioning space for positioning the electrolytic cell 400. The second positioning members 330 are slidingly arranged on the first positioning members 320. During the sliding process of the second positioning members 330 from the top of the first positioning members 320 to the bottom, the second positioning members 330 can flatten the side surface of the cell core of the positioned electrolytic cell 400 into a plane.

[0026] During the assembly of the electrolytic cell 400, according to the height of the electrolytic cell 400 protruding from the bottom of the electrolytic cell 400 when the electrolytic cell 400 is locked after being assembled, the pad 200 with appropriate height and size is selected to avoid the interference between the positioning platform 100 and the bolts of the electrolytic cell 400. Part of the positioning assemblies 300 are first arranged on the positioning platform 100, so that the first positioning surface of the first positioning members 320 arranged on the positioning platform 100 can be used for positioning the adjacent two sides of the accessories of the electrolytic cell 400. After the pile of the accessories of the electrolytic cell 400 is completed, the remaining positioning assemblies 300 of the positioning platform 100 are assembled, so that the formed positioning space can position and limit the electrolytic cell 400. Then, the second positioning members 330 on the same side of the cell core of the electrolytic cell 400 are driven to act. During the sliding process of the second positioning members 330 from the top of the first positioning members 320 to the bottom, the second positioning members 330 can flatten the side surface of the cell core of the positioned electrolytic cell 400 into a plane.

[0027] The external positioning tool of the electrolysis of the application makes the assembly process of the whole electrolytic cell 400 simple, the initial positioning is limited by the first positioning member 320, and the positioning accuracy of the stacking of the electrolytic cell 400 is ensured by the sliding and pressing of the second positioning member 330, which can effectively solve the problem of large cumulative error in the existing assembly process, and avoid the sealing failure of the cell core of the electrolytic cell 400 due to mispositioning. The external positioning tool of the application can effectively reduce the mispositioning and sealing problem of the electrolytic cell 400 assembly in the stacking process, and improve the reliability and stability of the product.

[0028] In the embodiment shown in the application, the positioning space is rectangular, specifically, the side of the positioning space includes a first side, a second side, a third side and a fourth side, and a group of positioning assemblies 300 are arranged on the opposite first side and third side, and two groups of positioning assemblies 300 are arranged on the opposite second side and fourth side. The positioning assemblies 300 arranged on the first side and the third side are located on the central axis of the first side, and the positioning assemblies 300 arranged on the second side and the fourth side are close to the first side or the third side.

[0029] Most of the electrode slots are rectangular, so a group of positioning assemblies 300 are arranged on the short side, and the positioning assemblies 300 are arranged on the midpoint of the short side, and at least two groups of positioning assemblies 300 are arranged on the long side. In this way, accurate positioning can be achieved while reducing the number of parts of the positioning tool, making the positioning and assembly process simpler and ensuring that there will be no omissions or other negligence. Through reasonable configuration, the assembly of the electrolytic cell 400 is more efficient and accurate.

[0030] In some other embodiments, the cell core of the electrolytic cell 400 can also be other shapes, and some can be circular, so the arrangement position of the positioning assembly 300 on the positioning platform 100 can be adjusted according to the shape and size of the electrolysis, so that the external positioning tool of the electrolytic cell of the application can adapt to the assembly of electrolytic cells 400 of different sizes.

[0031] As shown in some other embodiments, Figure 4 and Figure 5 As shown in some other embodiments, the second positioning member 330 is formed with a third positioning surface 3301, the third positioning surface 3301 is divided into two halves and located on the two sides of the first positioning member 320, and the third positioning surface 3301 is coplanar with the second positioning surface 321. After the cell core is stacked, the third positioning surface 3301 of the second positioning member 330 cooperates with the second positioning surface 321 to reposition and correct the cell core of the electrolytic cell 400 during the process of sliding from the top to the bottom of the first positioning member 320, so that the same side of the cell core is adjusted to a plane. The arrangement of the third positioning surface 3301 can increase the contact area with the cell core, thereby improving the positioning efficiency and accuracy of the same side.

[0032] Some other embodiments, as shown in Figure 4 The second positioning member 330 is connected to the first positioning member 320 through the guide rail and slider structure 340. The guide rail and slider structure 340 includes a linear rail and a slider that are matched with each other. The linear rail is fixed to the first positioning member 320, and the second positioning member 330 is fixed to the slider. The guide rail and slider structure 340 is a standard part in the prior art, and thus is not described in detail. The second positioning member 330 is connected to the first positioning member 320 through the guide rail and slider structure 340, so that the second positioning member 330 slides more smoothly, and the repositioning accuracy of the second positioning member 330 during the press fitting process is more accurate.

[0033] In addition, it should be noted that the width of the first positioning member 320 and the second positioning member 330 can be adjusted when there is a slight deviation in the width of the core of the electrolytic cell 400, so as to further increase the size of the positioning space.

[0034] Some other embodiments, as shown in Figure 5 The second positioning member 330 includes a third positioning surface 3301 and a second extension part 332. The third positioning surface 3301 is provided in two pieces, and the two third positioning surfaces 3301 are fixed to the two sides of the second extension part 332. The third positioning surface 3301 is connected to the side surface of the first positioning member 320 through the guide rail and slider structure 340.

[0035] The third positioning surface 3301 and the second extension part 332 make the second positioning member 330 in the shape of U, and the two groups of guide rail and slider structures 340 make the second positioning member 330 slide more smoothly and stably on the first positioning member 320.

[0036] Some specific embodiments, as shown in Figures 1 to 3 The positioning assembly 300 further includes a third positioning member 310. The second positioning member 330 is fixed to the third positioning member 310, and the third positioning member 310 is inserted into the positioning platform 100.

[0037] At present, the installation part of the outer positioning member of the mainstream electrolytic cell 400 positioning tool mainly adopts a plate. If the plate is too high, it will be twisted and deformed. When the electrolytic cell 400 is assembled, the top opening will be in the shape of a horn, which cannot guarantee the positioning accuracy and perpendicularity. Therefore, a reinforcing rib frame is usually designed on the top to rigidly position the tool, so as to alleviate the horn-shaped opening on the top. However, the reinforcing rib on the top will cause the positioning tool to be twisted and deformed.

[0038] To solve the above problems, the third positioning member 310 is a column, and the bottom of the column-shaped third positioning member 310 is preliminarily positioned by the insertion hole 101 reserved in the base, so that the third positioning member 310 can be quickly inserted and mounted on the positioning platform 100, and the adjustment and disassembly are facilitated.

[0039] As shown in FIG. 1, the third positioning member 310 is provided with a mounting surface 311 perpendicular to the first positioning surface on one side, and the first positioning member 320 is detachably fixed to the mounting surface 311, so that the first positioning member 320 is quickly positioned and fixed.

[0040] In some other embodiments, the first positioning member 320 is connected to the third positioning member 310 by a bolt, so that the first positioning member 320 is more convenient to disassemble, wherein the third positioning member 310 is provided with a long slot on the side away from the mounting surface 311, the long slot penetrates the mounting surface 311, and the bolt is threadedly connected to the side of the first positioning member 320 away from the second positioning surface 321 through the long slot.

[0041] When the existing electrolytic cell 400 is assembled, the outer positioning mechanism needs to be installed in advance around the electrolytic cell 400. When the electrolytic cell 400 is stacked, the over-positioning around the electrolytic cell 400 leads to difficulties in installation engineering due to the cumulative error of the bipolar plate.

[0042] The outer positioning tool structure of the electrolytic cell is simple, the assembly process of the electrolytic cell 400 is simplified, the stacking outer positioning technology can replace the traditional inner hole fine positioning method, the processing difficulty and cost are reduced, the positioning process time is greatly shortened, the positioning precision is improved, the cumulative error of the electrolytic cell 400 during pressing is reduced, and the overall assembly precision is improved.

[0043] More importantly, through the secondary pressing of the second positioning member 330, the misalignment and sealing problems are reduced, and the accurate positioning technology can effectively reduce the misalignment and sealing problems of the electrolytic cell 400 assembly during stacking, and improve the reliability and performance of the product.

[0044] As shown in FIG. 1, the third positioning member 310 is provided with a mounting surface 311 perpendicular to the first positioning surface on one side, and the first positioning member 320 is detachably fixed to the mounting surface 311, so that the first positioning member 320 is quickly positioned and fixed. Figure 6 and Figure 7 As shown in FIG. 1, the third positioning member 310 is provided with a mounting surface 311 perpendicular to the first positioning surface on one side, and the first positioning member 320 is detachably fixed to the mounting surface 311, so that the first positioning member 320 is quickly positioned and fixed. The positioning assembly 300 on the third side and the fourth side is removed; The accessories of the electrolytic cell 400 are sequentially placed on the pad 200 for installation, and the two sides of the accessories are respectively close to the first side and the second side; After the electrolytic cell 400 is stacked, the positioning components 300 on the third and fourth sides are installed in sequence. Then, the second positioning component 330 on the same side is slidably adjusted. The same side of the core of the electrolytic cell 400 is leveled into a plane by sliding and pressing the second positioning component 330. After the electrolytic cell 400 is locked, the first positioning component 320 and the second positioning component 330 are removed, and the assembled electrolytic cell 400 is lifted away from the pad 200, thus completing the external positioning press-fit of the electrolytic cell 400.

[0045] The external positioning fixture for the electrolytic cell of this application is easy to disassemble and install, has accurate positioning, reliable structure, and high overall strength, meeting the external positioning requirements of the 400mm electrolytic cell.

[0046] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. An external positioning tool for an electrolytic cell, characterized by: include Positioning platform; A pad is placed on the positioning platform, and the top surface of the pad is the first positioning surface; Several sets of positioning components are detachably installed on the positioning platform. The positioning components surround the pad. Each positioning component includes a first positioning component and a second positioning component. The first positioning component has a second positioning surface, which is perpendicular to the first positioning surface. All the second positioning surfaces and the first positioning surface are combined to form a positioning space for positioning the electrolytic cell. The second positioning component is slidably installed on the first positioning component. During the sliding process of the second positioning component from the top to the bottom of the first positioning component, the second positioning component can flatten the side of the core of the positioned electrolytic cell into a plane.

2. An external positioning tool for an electrolytic cell as claimed in claim 1, characterised in that: The positioning space is rectangular, and the sides of the positioning space include a first side, a second side, a third side, and a fourth side. A set of positioning components is respectively provided on the first side and the third side, and two sets of positioning components are respectively provided on the second side and the fourth side. The positioning components provided on the first side and the third side are located on the central axis of the first side, and the positioning components provided on the second side and the fourth side are close to the first side or the third side.

3. An external positioning tool for an electrolytic cell as claimed in claim 2, characterised in that: The second positioning member has a third positioning surface, which is divided into two halves and located on both sides of the first positioning member. The third positioning surface is coplanar with the second positioning surface.

4. An external positioning tool for an electrolytic cell as claimed in claim 3, characterised in that: The second positioning component is slidably connected to the first positioning component via a guide rail slider structure.

5. An external positioning tool for an electrolytic cell as claimed in claim 4, characterised in that: The second positioning member includes a first extension and a second extension. The first extension is provided in two parts, and the two first extensions are respectively fixed to the two sides of the second extension. The first extension is connected to the side of the first positioning member through the guide rail slider structure.

6. The external positioning tooling for an electrolytic cell of claim 1, wherein: The positioning component further includes a third positioning element, the second positioning element is fixed to the third positioning element, and the third positioning element is inserted into the positioning platform.

7. An external positioning tool for an electrolytic cell as claimed in claim 6, characterised in that: The third positioning member is cylindrical, and one side of the third positioning member is milled with a mounting surface perpendicular to the first positioning surface. The first positioning member is detachably fixed to the mounting surface.

8. An external positioning tool for an electrolytic cell as claimed in claim 7, characterised in that: The first positioning element is connected to the third positioning element by bolts.

9. An external positioning tool for an electrolytic cell as claimed in claim 8, characterised in that: The third positioning member has a long groove on the side facing away from the mounting surface, the long groove extends through the mounting surface, and the bolt passes through the long groove and is threadedly connected to the side of the first positioning member facing away from the second positioning surface.

10. A method of assembling an electrolytic cell based on the external positioning tooling of the electrolytic cell according to any one of the preceding claims 2 to 9, characterized in that, Includes the following steps: Remove the positioning components from the third side and the fourth side; Install the electrolytic cell components onto the pad in sequence, and make the two sides of the components rest against the first side and the second side respectively. After the electrolytic cells are stacked, the positioning components on the third and fourth sides are installed in sequence. Then, the second positioning component on the same side is slidably adjusted. The same side of the core of the electrolytic cell is leveled into a plane by sliding and pressing the second positioning component. After the electrolytic cell is locked, remove the first positioning component and the second positioning component, and lift the assembled electrolytic cell away from the pad.

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