Pressing plate device and welding equipment
By designing a press plate device including peripheral pressure plate assembly and internal pressure plate assembly, the problem of uneven stress during the pressing process of bipolar plate is solved, and sufficient pressing of each area of the bipolar plate is achieved, reducing the phenomenon of dummy welding and improving welding yield.
Patent Information
- Application Number
- CN202421795805.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-26
AI Technical Summary
In the prior art, due to uneven stress during the pressing process of bipolar plates, some areas cannot be effectively pressed, and thus the phenomenon of dummy welding occurs, reducing the welding yield.
A press plate device is designed, including a base plate, a peripheral press plate assembly and an internal press plate assembly. The peripheral pressure plate assembly separates the edges of the bipolar plates through multiple peripheral pressure plates, and the internal pressure plate assembly presses the internal areas of the bipolar plates through multiple internal pressure plates to ensure that all areas are fully pressed.
Through uniform pressing force, the occurrence of dummy welding is reduced and the welding yield of bipolar plates is improved.
Smart Images
Figure CN222843418U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bipolar plate welding, and in particular to a plate pressing device and welding equipment. Background Art
[0002] At present, most of the metal bipolar plates of fuel cells use a pressing plate device to press the cathode plate and the anode plate, and then weld the bipolar plates on the pressing plate device. During the pressing process, the bipolar plates are usually pressed between the base plate and the pressing plate. Due to the large welding width of the bipolar plates and the limited processing accuracy of the pressing plate and the base plate, it is easy for various areas of the bipolar plates to be unevenly stressed between the base plate and the pressing plate, resulting in some areas being unable to be effectively pressed, further leading to the phenomenon of cold welding and reducing the welding yield. Utility Model Content
[0003] In view of this, the purpose of the present application is to overcome the deficiencies in the prior art and to provide a plate pressing device that can fully press each area of the bipolar plate.
[0004] The present application also provides a welding device.
[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:
[0006] According to the first aspect of the present application, the pressure plate device includes: a bottom plate, which is used to place a bipolar plate; a peripheral pressure plate assembly, which is connected to the side of the bottom plate for placing the bipolar plate, and the peripheral pressure plate assembly includes a plurality of peripheral pressure plates, which are arranged along the edge of the bipolar plate and are all used to press the edge of the bipolar plate, and the plurality of peripheral pressure plates are surrounded to form an avoidance space; an internal pressure plate assembly, which is connected to the side of the bottom plate for placing the bipolar plate, and the internal pressure plate assembly includes a plurality of internal pressure plates, which are all arranged in the avoidance space, and the shape formed by splicing the plurality of internal pressure plates is the same as the shape formed by the edge of the avoidance space, and the plurality of internal pressure plates are respectively used to press different areas inside the bipolar plate.
[0007] The pressing plate device of the present application has the following advantages:
[0008] In the above-mentioned pressing plate device, the edge of the bipolar plate can be pressed by the peripheral pressing plate assembly, and the non-edge area of the bipolar plate can be pressed by the internal pressing plate assembly. In this process, since the peripheral pressing plate assembly includes multiple peripheral pressing plates, a large-format peripheral pressing plate can be split into multiple small-area peripheral pressing plates, and different areas of the edge of the bipolar plate can be separately pressed by multiple peripheral pressing plates. In this way, the influence of the processing accuracy of the large-format peripheral pressing plate on the pressing accuracy of the edge of the bipolar plate can be reduced, and the force uniformity between the peripheral pressing plate and the edge of the bipolar plate is improved, so that the edge area of the bipolar plate is fully pressed. Similarly, since the internal pressing plate assembly includes multiple internal In this way, a large-area internal pressure plate can be split into multiple small-area internal pressure plates, and different areas inside the bipolar plate can be separately pressed by multiple internal pressure plates. In this way, the influence of the processing accuracy of the large-area internal pressure plate on the pressing accuracy of the edge of the bipolar plate can be reduced, and the force uniformity between the internal pressure plate and the inside of the bipolar plate can be improved, so that the internal area of the bipolar plate can be fully pressed. Furthermore, since the shape formed by splicing multiple internal pressure plates is the same as the shape formed by the edge of the avoidance space, in this way, all areas of the bipolar plate can be pressed by multiple peripheral pressure plates and multiple internal pressure plates, and each area of the bipolar plate can be fully pressed.
[0009] According to the pressure plate device of the first aspect of the present application, the plurality of peripheral pressure plates include two first peripheral pressure plates and a plurality of second peripheral pressure plates, the two first peripheral pressure plates are used to be respectively arranged at both ends of the bipolar plate along the first direction, and a plurality of second peripheral pressure plates are arranged along the first direction between one ends of the two first peripheral pressure plates along the second direction, and a plurality of second peripheral pressure plates are arranged along the first direction between the other ends of the two first peripheral pressure plates along the second direction;
[0010] The first direction and the second direction are perpendicular to each other.
[0011] According to the pressure plate device of the first aspect embodiment of the present application, the peripheral pressure plate assembly also includes two connecting rods, each of the connecting rods having two ends respectively connected to the two first peripheral pressure plates, and one of the connecting rods is arranged at one end of the two first peripheral pressure plates along the second direction, and the other connecting rod is arranged at the other end of the two first peripheral pressure plates along the second direction, each of the second peripheral pressure plates is provided with a connecting through hole extending along the first direction, and each of the connecting rods is passed through any plurality of connecting through holes.
[0012] According to the pressure plate device of the first aspect of the present application, the peripheral pressure plate assembly also includes a plurality of elastic members, each of the second peripheral pressure plates is provided with a mounting through hole on the side away from the avoidance space along the second direction, each of the mounting through holes is provided with an elastic member, and the elastic member is at least partially exposed outside one end of the second peripheral pressure plate close to the bipolar plate in a natural state.
[0013] According to the pressure plate device of the first aspect embodiment of the present application, the first peripheral pressure plate is a U-shaped pressure plate, the openings of the two U-shaped pressure plates are arranged opposite to each other, and among the multiple second peripheral pressure plates between the two U-shaped pressure plates, the number of the second peripheral pressure plates at one end along the second direction is the same as the number of the second peripheral pressure plates at the other end along the second direction.
[0014] According to the pressure plate device of the first aspect of the present application, a positioning hole is provided at both ends of at least one diagonal of the bottom plate, and the pressure plate device also includes a plurality of elastic positioning components, each of which is arranged in one of the positioning holes, and the elastic positioning components are at least partially exposed on one side of the bottom plate for placing the bipolar plate in a natural state.
[0015] According to the pressure plate device of the first aspect of the present application, the elastic positioning assembly includes a positioning member and an elastic connecting member, the elastic connecting member is arranged in the positioning hole, and the two ends of the elastic connecting member are respectively connected to the base plate and the positioning member, and one end of the positioning member away from the elastic connecting member is at least partially exposed to the side of the base plate for placing the bipolar plate in a natural state.
[0016] According to the pressure plate device of the first aspect embodiment of the present application, among the multiple internal pressure plates, there are one first internal pressure plate, two second internal pressure plates and two third internal pressure plates, the two second internal pressure plates are arranged relative to the edge of the avoidance space along one of the diagonals of the avoidance space, the two third internal pressure plates are arranged relative to the edge of the avoidance space along the other diagonal of the avoidance space, and each of the second internal pressure plates is spaced apart from one of the third internal pressure plates along the second direction, and the first internal pressure plate is arranged between the two second internal pressure plates and the two third internal pressure plates.
[0017] According to the pressure plate device of the first aspect of the present application, the side surface of each of the outer pressure plates close to the avoidance space is a slope, the side surface of each of the inner pressure plates close to the outer pressure plates is a slope, and the two adjacent side surfaces of any two adjacent inner pressure plates are slopes.
[0018] The welding equipment according to the second embodiment of the present application includes: the pressing plate device as described above.
[0019] The welding equipment of the present application has the following advantages:
[0020] In the above-mentioned welding equipment, since the above-mentioned pressing plate device can make each area of the bipolar plate be fully pressed together, the above-mentioned welding equipment can reduce the phenomenon of cold welding during the welding process to improve the welding yield of the bipolar plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the three-dimensional structure of the pressing plate device in the present application is shown;
[0023] Figure 2 A schematic diagram of the exploded structure of the pressing plate device in the present application is shown;
[0024] Figure 3 A schematic cross-sectional view of the pressing plate device in the present application is shown;
[0025] Figure 4 Shows Figure 3 A schematic diagram of the enlarged structure at A in the middle;
[0026] Figure 5 A schematic cross-sectional view of the peripheral pressure plate assembly in the present application is shown;
[0027] Figure 6 Shows Figure 5 A schematic diagram of the enlarged structure at B in the middle;
[0028] Figure 7 A schematic diagram of the exploded structure of the peripheral pressure plate assembly in the present application is shown;
[0029] Figure 8 A schematic structural diagram of the internal pressure plate assembly in the present application is shown.
[0030] Description of main component symbols:
[0031] 100-bottom plate; 110-positioning hole;
[0032] 200-peripheral pressure plate assembly; 210-avoidance space; 220-first peripheral pressure plate; 230-second peripheral pressure plate; 231-connection through hole; 232-installation through hole; 240-connecting rod; 250-elastic member;
[0033] 300 - internal pressure plate assembly; 310 - first internal pressure plate; 320 - second internal pressure plate; 330 - third internal pressure plate;
[0034] 400 - elastic positioning component; 410 - positioning member; 420 - elastic connecting member. DETAILED DESCRIPTION
[0035] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0039] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0040] Reference Figure 1 as well as Figure 2 As shown, the pressure plate device involved in the embodiment of the present application includes: a base plate 100, a peripheral pressure plate assembly 200 and an internal pressure plate assembly 300.
[0041] Specifically, the base plate 100 is used for placing the bipolar plate; the peripheral pressure plate assembly 200 is connected to the side of the base plate 100 for placing the bipolar plate, and the peripheral pressure plate assembly 200 includes multiple peripheral pressure plates, which are arranged along the edge of the bipolar plate and are all used to press the edge of the bipolar plate, and the multiple peripheral pressure plates are surrounded to form an avoidance space 210; the internal pressure plate assembly 300 is connected to the side of the base plate 100 for placing the bipolar plate, and the internal pressure plate assembly 300 includes multiple internal pressure plates, which are all arranged in the avoidance space 210, and the shape formed by the multiple internal pressure plates is the same as the shape formed by the edge of the avoidance space 210, and the multiple internal pressure plates are respectively used to press different areas inside the bipolar plate.
[0042] In the above-mentioned pressing plate device, the edge of the bipolar plate can be pressed by the peripheral pressing plate assembly 200, and the non-edge area of the bipolar plate can be pressed by the internal pressing plate assembly 300. In this process, since the peripheral pressing plate assembly 200 includes multiple peripheral pressing plates, a large-format peripheral pressing plate can be split into multiple small-area peripheral pressing plates, and different areas of the edge of the bipolar plate can be separately pressed by multiple peripheral pressing plates. In this way, the influence of the processing accuracy of the large-format peripheral pressing plate on the pressing accuracy of the edge of the bipolar plate can be reduced, and the force uniformity between the peripheral pressing plate and the edge of the bipolar plate is improved, so that the edge area of the bipolar plate is fully pressed. Similarly, since the internal pressing plate assembly 300 includes Including multiple internal pressure plates, so that a large-area internal pressure plate can be split into multiple small-area internal pressure plates, and different areas inside the bipolar plate can be separately pressed by multiple internal pressure plates. In this way, the influence of the processing accuracy of the large-area internal pressure plate on the pressing accuracy of the edge of the bipolar plate can be reduced, and the force uniformity between the internal pressure plate and the inside of the bipolar plate is improved, so that the internal area of the bipolar plate can be fully pressed. Furthermore, since the shape formed by splicing the multiple internal pressure plates is the same as the shape formed by the edge of the avoidance space 210, in this way, all areas of the bipolar plate can be pressed by multiple peripheral pressure plates and multiple internal pressure plates, and each area of the bipolar plate can be fully pressed.
[0043] Reference Figure 7 As shown, among the multiple peripheral pressure plates, there are two first peripheral pressure plates 220 and multiple second peripheral pressure plates 230, the two first peripheral pressure plates 220 are used to be respectively arranged at the two ends of the bipolar plate along the first direction, and a plurality of second peripheral pressure plates 230 are arranged along the first direction between one end of the two first peripheral pressure plates 220 along the second direction, and a plurality of second peripheral pressure plates 230 are arranged along the first direction between the other ends of the two first peripheral pressure plates 220 along the second direction; wherein the first direction and the second direction are perpendicular to each other.
[0044] It should be noted that the first direction is Figure 1 The direction indicated by x is the length direction of the bipolar plate, and the second direction is Figure 1 The direction indicated by y is the width direction of the bipolar plate.
[0045] In this embodiment, since the two first peripheral pressure plates 220 are used to be respectively arranged at the two ends of the bipolar plate along the first direction, the two end edges of the bipolar plate in the length direction can be pressed together by the two first peripheral pressure plates 220, that is, the two short side edges of the bipolar plate are pressed together. Since a plurality of second peripheral pressure plates 230 are arranged along the first direction between one ends of the two first peripheral pressure plates 220 along the second direction, and a plurality of second peripheral pressure plates 230 are arranged along the first direction between the other ends of the two first peripheral pressure plates 220 along the second direction, therefore, the two sides of the bipolar plate in the width direction can be pressed together by the plurality of second peripheral pressure plates 230, that is, the two long side edges of the bipolar plate are pressed together, thereby realizing the pressing of the edges of the bipolar plate.
[0046] Continue to refer to Figure 7 As shown, the peripheral pressure plate assembly 200 also includes two connecting rods 240, and the two ends of each connecting rod 240 are respectively connected to the two first peripheral pressure plates 220, and one of the connecting rods 240 is arranged at one end of the two first peripheral pressure plates 220 along the second direction, and the other connecting rod 240 is arranged at the other end of the two first peripheral pressure plates 220 along the second direction, and each second peripheral pressure plate 230 is provided with a connecting through hole 231 extending along the first direction, and each connecting rod 240 is passed through any multiple connecting through holes 231.
[0047] In this embodiment, at one end of the two first peripheral pressure plates 220 along the second direction, multiple second peripheral pressure plates 230 can be connected in series between the two peripheral pressure plates through one of the connecting rods 240. Similarly, at the other end of the two first peripheral pressure plates 220 along the second direction, multiple second peripheral pressure plates 230 can be connected in series between the two peripheral pressure plates through another connecting rod 240, so as to fix the multiple second peripheral pressure plates 230. At the same time, the number of second peripheral pressure plates 230 connected in series on each connecting rod 240 can be increased or decreased according to the size of the bipolar plate to improve the applicability of the above-mentioned pressure plate device.
[0048] Specifically, in the above-mentioned embodiment, in order to accurately set the two first peripheral pressure plates 220 at the two ends of the bipolar plate along the length direction, positioning pins or other positioning structures can be set between the first peripheral pressure plates 220 and the bottom plate 100 to achieve positioning of the first peripheral pressure plates 220.
[0049] Reference Figure 5 , Figure 6 as well as Figure 7As shown, the peripheral pressure plate assembly 200 also includes a plurality of elastic members 250, each second peripheral pressure plate 230 is provided with a mounting hole 232 on one side away from the avoidance space 210 along the second direction, and an elastic member 250 is provided in each mounting hole 232, and the elastic member 250 is at least partially exposed outside one end of the second peripheral pressure plate 230 close to the bipolar plate in a natural state.
[0050] Specifically, each second peripheral pressing plate 230 can rotate around the connecting rod 240 connected thereto.
[0051] It should be noted that, generally speaking, when the pressure plate assembly is pressed onto the bipolar plate, pressure is usually applied to the pressure plate assembly by a pressure source such as an air pump, an air cylinder or a hydraulic cylinder, so that the pressure plate assembly presses the bipolar plate.
[0052] In the present embodiment, when the pressure plate assembly is pressurized to press the bipolar plate, the elastic member 250 will be subjected to pressure from the bipolar plate, so that the elastic member 250 shrinks and is completely located in the mounting through hole 232. At this time, the elastic member 250 has elastic potential energy that drives the second peripheral pressure plate 230 to move away from the bipolar plate, so that the second peripheral pressure plate 230 has a tendency to move away from the bipolar plate. Since the mounting through hole 232 is arranged on the side of the second peripheral pressure plate 230 away from the avoidance space 210 along the second direction, that is, the mounting through hole 232 is arranged away from the interior of the bipolar plate, the shrinking elastic member 250 can make the second peripheral pressure plate 230 move along the side away from the avoidance space 210 in the second direction toward the direction away from the bipolar plate, so that the second peripheral pressure plate 230 rotates relative to the connecting rod 240, so that the second peripheral pressure plate 230 moves along the side close to the avoidance space 210 in the second direction toward the direction close to the bipolar plate, thereby achieving compression of the bipolar plate.
[0053] Specifically, each second peripheral pressing plate 230 is provided with a plurality of mounting through holes 232 , and the plurality of mounting through holes 232 are arranged at intervals along the first direction.
[0054] Reference Figure 7 As shown, the first peripheral pressure plate 220 is a U-shaped pressure plate, the openings of the two U-shaped pressure plates are arranged opposite to each other, and among the multiple second peripheral pressure plates 230 between the two U-shaped pressure plates, the number of the second peripheral pressure plates 230 at one end along the second direction is the same as the number of the second peripheral pressure plates 230 at the other end along the second direction.
[0055] In this embodiment, since the first peripheral pressure plate 220 is a U-shaped pressure plate, the openings of the two U-shaped pressure plates are arranged opposite to each other, so that the two short sides of the bipolar plate can be pressed together by the two U-shaped pressure plates, and each U-shaped pressure plate can extend at both ends along the second direction to the two long sides of the bipolar plate to ensure that the four diagonals of the bipolar plate can be pressed together. At the same time, among the multiple second peripheral pressure plates 230 between the two U-shaped pressure plates, since the number of the second peripheral pressure plates 230 at one end along the second direction is the same as the number of the second peripheral pressure plates 230 at the other end along the second direction, the force uniformity of the two long sides of the bipolar plate can be improved.
[0056] Reference Figure 2 as well as Figure 3 As shown, a positioning hole 110 is provided at both ends of at least one diagonal line of the base plate 100, and the pressure plate device also includes a plurality of elastic positioning components 400, each elastic positioning component 400 is arranged in a positioning hole 110, and the elastic positioning component 400 is at least partially exposed on one side of the base plate 100 for placing the bipolar plate in a natural state.
[0057] In this embodiment, since the elastic positioning assembly 400 is at least partially exposed to the side of the base plate 100 for placing the bipolar plate in a natural state, the bipolar plate can be fixed to the base plate 100 by multiple elastic positioning assemblies 400. At the same time, after the welding of the bipolar plate is completed, the elastic positioning assembly 400 can be contracted and enter the positioning hole 110 by external force, so that the bipolar plate is separated from the elastic positioning assembly 400, thereby improving the efficiency of removing the bipolar plate from the above-mentioned pressure plate device and improving the production efficiency of bipolar plate welding.
[0058] Specifically, in the present embodiment, the first peripheral pressing plate 220 is positioned by being connected to the elastic positioning assembly 400 .
[0059] Reference Figure 3 as well as Figure 4 As shown, the elastic positioning assembly 400 includes a positioning member 410 and an elastic connecting member 420. The elastic connecting member 420 is arranged in the positioning hole 110, and the two ends of the elastic connecting member 420 are respectively connected to the base plate 100 and the positioning member 410. One end of the positioning member 410 away from the elastic connecting member 420 is at least partially exposed to the side of the base plate 100 for placing the bipolar plate in a natural state.
[0060] In the present embodiment, since one end of the positioning member 410 away from the elastic connecting member 420 is at least partially exposed to the side of the base plate 100 for placing the bipolar plate in a natural state, the bipolar plate can be connected to the positioning member 410 to fix the bipolar plate on the base plate 100. Since the two ends of the elastic connecting member 420 are respectively connected to the base plate 100 and the positioning member 410, after the welding of the bipolar plate is completed, the elastic connecting member 420 can be contracted by external force, so that the positioning member 410 is contracted into the positioning hole 110, so that the bipolar plate is separated from the positioning member 410, thereby improving the efficiency of removing the bipolar plate from the above-mentioned pressing plate device and improving the production efficiency of bipolar plate welding.
[0061] Reference Figure 8 As shown, among the multiple internal pressure plates, there are included a first internal pressure plate 310, two second internal pressure plates 320 and two third internal pressure plates 330, the two second internal pressure plates 320 are arranged relative to the edge of the avoidance space 210 along one of the diagonals of the avoidance space 210, the two third internal pressure plates 330 are arranged relative to the edge of the avoidance space 210 along the other diagonal of the avoidance space 210, and each second internal pressure plate 320 is spaced apart from a third internal pressure plate 330 along the second direction, and the first internal pressure plate 310 is arranged between the two second internal pressure plates 320 and the two third internal pressure plates 330.
[0062] It should be noted that the bipolar plate has a flow field area, an oxygen inlet, an oxygen outlet, a hydrogen inlet, a hydrogen outlet, a coolant inlet and a coolant outlet, wherein the oxygen inlet and the oxygen outlet are respectively located at one of the diagonals of the flow field area along the bipolar plate, so that oxygen can flow through the flow field area. Similarly, the hydrogen inlet and the hydrogen outlet are respectively located at the other diagonal of the flow field area along the bipolar plate, so that hydrogen can flow through the flow field area. The coolant inlet and the coolant outlet are respectively located at the two ends of the flow field area along the length direction of the bipolar plate, so that the coolant can flow through the flow field area. At the same time, the oxygen inlet and the hydrogen inlet are respectively located at the two ends of the flow field area along the length direction of the bipolar plate, and the oxygen outlet and the hydrogen outlet are respectively located at the two ends of the flow field area along the length direction of the bipolar plate.
[0063] In this embodiment, the flow field area, the coolant inlet area and the coolant outlet area of the bipolar plate can be pressed together by the first internal pressure plate 310, the oxygen inlet and the oxygen outlet areas of the bipolar plate can be pressed together by the second internal pressure plate 320, and the hydrogen inlet and the hydrogen outlet areas of the bipolar plate can be pressed together by the third internal pressure plate 330.
[0064] Specifically, in the present embodiment, in order to accurately set the first internal pressure plate 310 in the flow field area, the coolant inlet area and the coolant outlet area of the bipolar plate, positioning pins or other positioning structures can be set between the first internal pressure plate 310 and the base plate 100. Similarly, in order to accurately set the second internal pressure plate 320 in the area where the oxygen inlet and the hydrogen inlet of the bipolar plate are located, positioning pins or other positioning structures can be set between the second internal pressure plate 320 and the base plate 100. In order to accurately set the third internal pressure plate 330 in the area where the hydrogen inlet and the hydrogen outlet of the bipolar plate are located, positioning pins or other positioning structures can be set between the third internal pressure plate 330 and the base plate 100.
[0065] Reference Figure 1 As shown, the side surface of each outer pressing plate close to the avoidance space 210 is a slope, the side surface of each inner pressing plate close to the outer pressing plate is a slope, and the two adjacent side surfaces of any two adjacent inner pressing plates are slopes.
[0066] In this embodiment, the outer pressure plate assembly 200 and the inner pressure plate assembly 300 are spaced apart to reserve a weld seam. Similarly, any two adjacent inner pressure plates are spaced apart to reserve a weld seam. Since the side surface of each outer pressure plate close to the avoidance space 210 is a slope, the side surface of each inner pressure plate close to the outer pressure plate is a slope, and the adjacent side surfaces of any two adjacent inner pressure plates are both slopes, this makes it easy for the welding device of the welding equipment to weld in the reserved weld seam.
[0067] The welding equipment involved in the embodiment of the present application includes: the above-mentioned pressing plate device.
[0068] In the above-mentioned welding equipment, since the above-mentioned pressing plate device can make each area of the bipolar plate be fully pressed together, the above-mentioned welding equipment can reduce the phenomenon of cold welding during the welding process to improve the welding yield of the bipolar plate.
[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A pressing plate device, characterized in that: include: A bottom plate, the bottom plate is used for placing the bipolar plate; A peripheral pressing plate assembly, the peripheral pressing plate assembly is connected to a side of the bottom plate for placing the bipolar plate, the peripheral pressing plate assembly includes a plurality of peripheral pressing plates, the plurality of peripheral pressing plates are arranged along the edge of the bipolar plate and are all used to press the edge of the bipolar plate, and the plurality of peripheral pressing plates are surrounded to form an escape space; An internal pressure plate assembly, wherein the internal pressure plate assembly is connected to one side of the bottom plate for placing the bipolar plate, and the internal pressure plate assembly includes a plurality of internal pressure plates, wherein the plurality of internal pressure plates are all arranged in the avoidance space, and a shape formed by splicing the plurality of internal pressure plates is the same as a shape formed by the edge of the avoidance space, and the plurality of internal pressure plates are respectively used to press different areas inside the bipolar plate.
2. The pressing plate device according to claim 1, characterized in that: The plurality of peripheral pressing plates include two first peripheral pressing plates and a plurality of second peripheral pressing plates, wherein the two first peripheral pressing plates are respectively arranged at two ends of the bipolar plate along the first direction, and a plurality of second peripheral pressing plates are arranged along the first direction between one ends of the two first peripheral pressing plates along the second direction, and a plurality of second peripheral pressing plates are arranged along the first direction between the other ends of the two first peripheral pressing plates along the second direction; The first direction and the second direction are perpendicular to each other.
3. The pressing plate device according to claim 2, characterized in that: The peripheral pressure plate assembly also includes two connecting rods, each of which has two ends connected to the two first peripheral pressure plates respectively, and one of the connecting rods is arranged at one end of the two first peripheral pressure plates along the second direction, and the other connecting rod is arranged at the other end of the two first peripheral pressure plates along the second direction, each of the second peripheral pressure plates is provided with a connecting through hole extending along the first direction, and each of the connecting rods is passed through any plurality of the connecting through holes.
4. The pressing plate device according to claim 3, characterized in that: The peripheral pressure plate assembly also includes a plurality of elastic members, each of the second peripheral pressure plates is provided with a mounting through hole on one side away from the avoidance space along the second direction, an elastic member is provided in each mounting through hole, and the elastic member is at least partially exposed outside one end of the second peripheral pressure plate close to the bipolar plate in a natural state.
5. The pressing plate device according to claim 2, characterized in that: The first peripheral pressure plate is a U-shaped pressure plate, and the openings of the two U-shaped pressure plates are arranged opposite to each other. Among the multiple second peripheral pressure plates between the two U-shaped pressure plates, the number of the second peripheral pressure plates at one end along the second direction is the same as the number of the second peripheral pressure plates at the other end along the second direction.
6. The pressing plate device according to any one of claims 1 to 5, characterized in that: The base plate is provided with a positioning hole at both ends along at least one diagonal line thereof, and the pressure plate device further comprises a plurality of elastic positioning components, each of which is arranged in one of the positioning holes, and the elastic positioning components are at least partially exposed on one side of the base plate for placing the bipolar plate in a natural state.
7. The pressing plate device according to claim 6, characterized in that: The elastic positioning assembly includes a positioning member and an elastic connecting member, the elastic connecting member is arranged in the positioning hole, and the two ends of the elastic connecting member are respectively connected to the base plate and the positioning member, and one end of the positioning member away from the elastic connecting member is at least partially exposed to the side of the base plate for placing the bipolar plate in a natural state.
8. The pressing plate device according to any one of claims 2 to 5, characterized in that: Among the multiple internal pressure plates, there are a first internal pressure plate, two second internal pressure plates and two third internal pressure plates, the two second internal pressure plates are arranged relative to the edge of the avoidance space along one of the diagonals of the avoidance space, the two third internal pressure plates are arranged relative to the edge of the avoidance space along the other diagonal of the avoidance space, and each of the second internal pressure plates is spaced apart from one of the third internal pressure plates along the second direction, and the first internal pressure plate is arranged between the two second internal pressure plates and the two third internal pressure plates.
9. The pressing plate device according to any one of claims 2 to 5, characterized in that: The side surface of each of the outer pressure plates close to the avoidance space is an inclined surface, the side surface of each of the inner pressure plates close to the outer pressure plates is an inclined surface, and the two adjacent side surfaces of any two adjacent inner pressure plates are both inclined surfaces.
10. A welding device, characterized in that: include: A pressing plate device as claimed in any one of claims 1 to 9.