A fuel cell manual adhesive line bonding tool

Abstract

The application discloses a fuel cell manual adhesive line sticking tool, and relates to the technical field of fuel cell production, which comprises an adhesive line positioning plate, adhesive line preloading grooves for positioning adhesive lines are formed in the adhesive line positioning plate, wherein adhesive line pushing-out grooves, which are in communication with the adhesive line preloading grooves, are also formed in the adhesive line positioning plate; a pressing head positioning cavity is further included, a pressing head is slidably embedded in the pressing head positioning cavity, and adhesive line pushing-out ribs for pushing the adhesive lines out of the adhesive line preloading grooves are arranged on the pressing head. The adhesive line preloading grooves are formed in the adhesive line positioning plate, the adhesive line preloading grooves are in interference fit with the adhesive lines, the adhesive lines to be stuck are embedded into the adhesive line preloading grooves for pre-positioning and fixing, the adhesive line pushing-out grooves are in clearance fit with the adhesive lines, so that the adhesive lines will not move when the adhesive lines are pushed out of the adhesive line preloading grooves into the adhesive line pushing-out grooves and the adhesive line positioning plate is removed, and the phenomenon that the adhesive lines are separated from the bipolar plates when the adhesive line positioning plate is removed is prevented.

Description

Technical Field

[0001] This invention relates to the field of fuel cell manufacturing technology, and specifically to a tooling for manually attaching adhesive lines to fuel cells. Background Technology

[0002] The hydrogen fuel cell stack is the site of electrochemical reactions and is the core component of a fuel cell system (or fuel cell engine). The hydrogen fuel cell stack is composed of multiple fuel cell cells stacked in series.

[0003] Bipolar plates and membrane electrode assemblies (MEAs) are alternately stacked, and seals are embedded between each unit. After being pressed together by components such as front and rear end plates, they are connected together by screws or other fastening methods to form a hydrogen fuel cell stack.

[0004] In existing technologies, such as the patent document with publication number CN217114454U, a device for fixing the sealing adhesive line of a fuel cell bipolar plate is disclosed. This device also discloses a flat plate with positioning holes and a sealing adhesive line groove, and a positioning rod. The positioning holes and sealing adhesive line groove are located at both ends of the flat plate, with the positioning holes located outside the sealing adhesive line groove. The positioning rod is detachably connected to the positioning holes. However, in practical applications, the adhesive line is manually pasted into the sealing groove of the bipolar plate. Due to the relatively long and complex structure of the adhesive line, significant deviations occur in the accuracy of the pasting and positioning, as well as in the control of the pre-pressure of the adhesive line. Furthermore, since the fuel cell stack consists of multiple bipolar plates with adhesive lines stacked together, misalignment of the adhesive lines can significantly affect the initial sealing performance and subsequent durability of the fuel cell stack, and may even cause leakage, preventing the vehicle from starting. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling for manually attaching adhesive lines to fuel cells, thereby solving the following technical problems:

[0006] The adhesive thread is manually attached to the sealing groove of the bipolar plate. Due to the length and complex structure of the adhesive thread, there will be significant deviations in the accuracy of the attachment and positioning, as well as in the control of the pre-pressure of the adhesive thread.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] A tooling for manually attaching adhesive lines to fuel cells includes an adhesive line positioning plate, wherein the adhesive line positioning plate has an adhesive line pre-loading groove for positioning the adhesive line, and the adhesive line positioning plate also has an adhesive line ejection groove communicating with the adhesive line pre-loading groove.

[0009] It also includes a pressure head positioning cavity, in which a pressure head is slidably embedded, and the pressure head is provided with adhesive line ejection ribs for ejecting the adhesive line from the adhesive line pre-loading groove.

[0010] Preferably, the pre-installed groove for the adhesive line is interference-fitted with the adhesive line.

[0011] Preferably, the adhesive line ejection groove is fitted with the adhesive line with a clearance.

[0012] Preferably, the pressure head positioning cavity is further provided with a pressure plate, and the pressure plate and the pressure head assembly are provided with several sets of spring mechanisms.

[0013] Preferably, the spring mechanism is arranged in four sets, which are arranged opposite to each other between the pressure plate and the pressure head, with two sets arranged on the same side.

[0014] Preferably, the pressure head is provided with limiting posts facing the pressure plate, and the spring mechanism is sleeved on the limiting posts.

[0015] Preferably, a plurality of supporting ribs are evenly distributed on the adhesive line positioning plate.

[0016] The beneficial effects of this invention are:

[0017] (1) The present invention uses a pre-installed groove for adhesive wire on the adhesive wire positioning plate. The pre-installed groove is interference-fitted with the adhesive wire, and the adhesive wire to be bonded is embedded into the pre-installed groove for pre-positioning and fixing. The adhesive wire ejection groove is clearance-fitted with the adhesive wire, so that when the adhesive wire is pushed out from the pre-installed groove to the ejection groove, the adhesive wire will not move when the adhesive wire positioning plate is removed, thus preventing the adhesive wire from detaching from the bipolar plate when the adhesive wire positioning plate is removed.

[0018] (2) Before pasting the glue wire, which is pre-positioned and fixed in the glue wire pre-loading groove, to the glue wire positioning plate, the present invention first places the glue wire positioning plate on the bipolar plate, and then places the pressure head positioning cavity on the glue wire positioning plate. By driving the pressure head to move towards the glue wire positioning plate, the glue wire ejection rib on the pressure head passes through the glue wire pre-loading groove and pushes the glue wire into the glue wire ejection groove. Then, the pressure head positioning cavity and the glue wire positioning plate are removed, so that the glue wire is pasted on the bipolar plate, realizing the connection between the glue wire and the bipolar plate. There is no need for manual connection between the glue wire and the bipolar plate. The glue wire pasting and positioning accuracy is higher, and there will be no deviation. The fuel cell stack production quality is higher. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of a manual adhesive bonding tool for fuel cells according to the present invention;

[0021] Figure 2 This is an exploded structural diagram of a fuel cell manual adhesive wire pasting fixture according to the present invention;

[0022] Figure 3 This is a schematic diagram of the bipolar plate in a manual adhesive bonding tooling for fuel cells according to the present invention;

[0023] Figure 4 This is a schematic diagram of the adhesive line positioning plate in a fuel cell manual adhesive line bonding tooling of the present invention;

[0024] Figure 5 This is a cross-sectional structural schematic diagram of the adhesive line positioning plate in a fuel cell manual adhesive line bonding tooling of the present invention;

[0025] Figure 6 This is a cross-sectional view of the adhesive line positioning plate after the adhesive line is assembled in a fuel cell manual adhesive line bonding fixture of the present invention.

[0026] Figure 7 This is a schematic diagram of the adhesive line ejection rib in a fuel cell manual adhesive line bonding tooling of the present invention.

[0027] In the diagram: 1. Bipolar plate; 2. Adhesive line; 3. Adhesive line positioning plate; 4. Pressure head; 5. Pressure head positioning cavity; 6. Spring mechanism; 7. Pressure plate; 8. Support rib; 9. Adhesive line pre-loading groove; 10. Adhesive line ejection groove; 11. Adhesive line ejection rib. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figures 1-2 As shown, the present invention is a manual adhesive wire bonding fixture for fuel cells, including an adhesive wire positioning plate 3. The adhesive wire positioning plate 3 has an adhesive wire pre-loading groove 9 for positioning the adhesive wire 2, and an adhesive wire ejection groove 10 communicating with the adhesive wire pre-loading groove. It should be noted that, in this embodiment, the adhesive wire pre-loading groove 9 on the adhesive wire positioning plate 3 is specifically designed to be interference-fitted with the adhesive wire 2, so that the adhesive wire to be bonded is embedded into the adhesive wire pre-loading groove 9 for pre-positioning and fixing. The adhesive wire ejection groove 10 is clearance-fitted with the adhesive wire 2, so that when the adhesive wire 2 is pushed out of the adhesive wire pre-loading groove 9 to the adhesive wire ejection groove 10, the adhesive wire 2 will not move when the adhesive wire positioning plate 3 is removed, thus preventing the adhesive wire 2 from detaching from the bipolar plate 1 when the adhesive wire positioning plate 3 is removed.

[0031] It also includes a pressure head positioning cavity 5, in which a pressure head 4 is slidably embedded. The pressure head 4 is provided with adhesive line ejection ribs 11 for ejecting the adhesive line 2 from the adhesive line pre-loading groove 9. It can be explained that before pasting the adhesive line 2, which is pre-positioned and fixed in the adhesive line pre-loading groove 9, to the adhesive line positioning plate 3, the adhesive line positioning plate 3 is first placed on the bipolar plate 1, and then the pressure head positioning cavity 5 is placed on the adhesive line positioning plate 3. By driving the pressure head 4 to move towards the adhesive line positioning plate 3, the adhesive line ejection ribs 11 on the pressure head 4 pass through the adhesive line pre-loading groove 9 and push the adhesive line 2 into the adhesive line ejection groove 10. Then, the pressure head positioning cavity 5 and the adhesive line positioning plate 3 are removed, so that the adhesive line 2 is pasted on the bipolar plate 1, realizing the connection between the adhesive line 2 and the bipolar plate 1. In this embodiment, there is no need for manual connection of the adhesive line 2 and the bipolar plate 1. The pasting and positioning accuracy of the adhesive line 2 is higher, and there will be no deviation. The production quality of the fuel cell stack is higher.

[0032] Example 2

[0033] Based on Example 1, please refer to Figures 3-4 The pressure plate 7 is also provided on the pressure head positioning cavity 5, and the pressure plate 7 and the pressure head 4 assembly are provided with several sets of spring mechanisms 6. It can be explained that when the pressure head 4 is driven to move towards the glue line positioning plate 3, by pressing the pressure plate 7, the pressure plate 7 applies a force to the pressure head 4 through the spring mechanism 6, thereby pushing the pressure head 4 to move.

[0034] In one embodiment of this example, the spring mechanism 6 is arranged in four sets, which are arranged opposite to each other between the pressure plate 7 and the pressure head 4, with two sets arranged on the same side.

[0035] As a further solution in this embodiment, please refer to Figures 5-7 Limiting posts are arranged in the direction of the pressure head 4 toward the pressure plate 7, and the spring mechanism 6 is sleeved on the limiting posts. It can be explained that when the pressure plate 7 is pressed and moved toward the pressure head 4, on the one hand, the limiting posts limit the spring mechanism 6 to avoid the phenomenon of deviation during the pressing of the spring mechanism 6, thus achieving a good limiting effect. On the other hand, by setting the limiting posts, the displacement of the spring mechanism 6 can be limited, so that the force applied to the pressure head 4 each time is consistent and uniform.

[0036] As a further embodiment, several supporting ribs 8 are evenly distributed on the adhesive line positioning plate 3; it can be explained that the supporting ribs 8 have a supporting function, so that the adhesive line positioning plate 3 is connected into a whole.

[0037] Example 3

[0038] Based on Example 2, a manual adhesive bonding fixture for fuel cells is provided, and the bonding method includes the following steps:

[0039] Step 1: Place the bipolar plate 1 on the workbench and pre-install the adhesive thread 2 into the adhesive thread pre-loading slot 9 on the adhesive thread positioning plate 3;

[0040] Step 2: Place the glue line positioning plate 3 on the bipolar plate 1, and then place the pressure head positioning cavity 5 on the glue line positioning plate 3.

[0041] Step 3: Press the pressure plate 7. The pressure plate 7 applies force to the pressure head 4 through the spring mechanism 6, which can push the pressure head 4 to move. The glue line push-out rib 11 on the pressure head 4 passes through the glue line pre-installation groove 9 and pushes the glue line 2 into the glue line push-out groove 10.

[0042] Step 4: After pre-assembly, lift the adhesive line positioning plate 3 and the pressure head positioning cavity 5. At this time, the adhesive line 2 has been pasted onto the bipolar plate 1.

[0043] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0044] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A tooling for manually attaching adhesive lines to fuel cells, comprising an adhesive line positioning plate (3), characterized in that, The adhesive line positioning plate (3) is provided with an adhesive line pre-assembly groove (9) for positioning the adhesive line (2); Among them, the glue line positioning plate (3) is also provided with a glue line ejection groove (10) that is connected to the glue line pre-installation groove; Also includes: A pressure head positioning cavity (5) is provided, in which a pressure head (4) is slidably embedded, and the pressure head (4) is provided with a glue line ejection rib (11) for ejecting the glue line (2) from the glue line pre-loading groove (9).

2. The fuel cell manual adhesive bonding fixture according to claim 1, characterized in that, The pre-installed groove (9) for the adhesive line is interference-fitted with the adhesive line (2).

3. The fuel cell manual adhesive bonding fixture according to claim 2, characterized in that, The adhesive line ejection groove (10) is fitted with the adhesive line (2) with a clearance.

4. The fuel cell manual adhesive bonding fixture according to claim 3, characterized in that, The pressure plate (7) is also provided on the pressure head positioning cavity (5), and the pressure plate (7) and the pressure head (4) assembly are provided with several sets of spring mechanisms (6).

5. The fuel cell manual adhesive bonding fixture according to claim 4, characterized in that, The spring mechanism (6) is arranged in four sets, which are arranged opposite to each other between the pressure plate (7) and the pressure head (4), with two sets arranged on the same side.

6. The fuel cell manual adhesive bonding fixture according to claim 5, characterized in that, The pressure head (4) is provided with a limiting post in the direction of the pressure plate (7), and the spring mechanism (6) is sleeved on the limiting post.

7. A manual adhesive bonding fixture for fuel cells according to any one of claims 1-6, characterized in that, Several supporting ribs (8) are evenly distributed on the adhesive line positioning plate (3).

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