A molding die for liquid silicone molding hydrogen energy battery plate

Abstract

The utility model discloses a molding die for molding a hydrogen energy battery plate with liquid silicone, comprising: an upper mold assembly, comprising a first molding surface, the first molding surface is formed with a first positioning structure; a lower mold assembly, comprising a second molding surface opposite to the first molding surface, the second molding surface is formed with a second positioning structure, the second positioning structure is used to position the hydrogen energy battery plate and cooperate with the first positioning structure to position the upper mold assembly and the lower mold assembly; a molding cavity, the first molding surface and the second molding surface are enclosed to form a molding cavity, the molding cavity comprises a first molding part for molding a first sealing silicone and a second molding part for molding a second sealing silicone. The utility model solves the problem that the bonding process of the sealing silicone often relies on manual operation, which is not only inefficient, but also difficult to ensure consistency and reliable electrical insulation performance and sealing, thereby affecting the performance and production cost of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone molding molds, in particular to a molding mold for liquid silicone molding hydrogen energy battery plates. Background Art

[0002] The hydrogen energy battery plate is one of the key components in the hydrogen fuel cell stack. The role of the hydrogen energy battery plate in the battery is to support the membrane electrode, transport hydrogen and oxygen to the membrane electrode and ensure that they can be evenly distributed and fully reacted, while collecting current, completing heat dissipation, and discharging water generated in the battery reaction.

[0003] Sealing silicone on hydrogen energy battery panels plays an important role in hydrogen fuel cells. Since liquid silicone has good electrical insulation properties, it can be used as the insulation layer in battery panels to ensure the safe operation of battery components. Figure 1 As shown, the hydrogen energy battery plate 4 includes a plate 41 and a sealing silicone 42 bonded to the plate 41. In the prior art, the bonding process of the sealing silicone often relies on manual operation, which is not only inefficient, but also difficult to ensure consistent and reliable electrical insulation performance and sealing, thereby affecting the performance and production cost of the battery. Utility Model Content

[0004] The utility model provides a molding die for molding a hydrogen energy battery plate with liquid silicone to solve the problem that the bonding process of the sealing silicone often relies on manual operation, which is not only inefficient but also difficult to ensure consistent and reliable electrical insulation performance and sealing, thereby affecting the performance and production cost of the battery.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] The embodiment of the utility model provides a forming mold for forming a hydrogen energy battery plate with liquid silicone, comprising:

[0007] An upper mold assembly includes a first molding surface, wherein the first molding surface is formed with a first positioning structure;

[0008] A lower mold assembly, comprising a second molding surface opposite to the first molding surface, the second molding surface being formed with a second positioning structure, the second positioning structure being used to position the hydrogen energy battery plate and cooperate with the first positioning structure to position the upper mold assembly and the lower mold assembly;

[0009] A molding cavity, wherein the first molding surface and the second molding surface enclose the molding cavity, and the molding cavity comprises a first molding part for molding a first sealing silicone and a second molding part for molding a second sealing silicone.

[0010] As mentioned above, in a molding mold for a liquid silicone molded hydrogen energy battery plate, the first molding part includes a first silicone groove formed around the surface of the plate, the first silicone groove is provided with a groove deepened into the groove, and the second molding part includes a second silicone groove formed around the surface of the plate.

[0011] As mentioned above, in a molding mold for a liquid silicone molded hydrogen energy battery plate, a plurality of glue outlets are provided in the molding cavity, a glue inlet is provided on the upper mold assembly, and a silicone flow channel is provided in the upper mold assembly, and the silicone flow channel connects the glue inlet with the plurality of glue outlets.

[0012] As for the above-mentioned liquid silicone molding hydrogen energy battery plate molding mold, the upper mold assembly includes:

[0013] An upper template, wherein the upper template is provided with the glue inlet, and the glue inlet passes through the upper template;

[0014] A glue separation plate, the glue separation plate is connected to a side of the upper mold plate facing the lower mold assembly, and the glue separation plate is provided with the silicone flow channel;

[0015] The upper mold core is connected to the glue separation plate and is located on the side of the glue separation plate away from the upper mold plate. The end surface of the upper mold core away from the glue separation plate is the first molding surface. The multiple glue outlets arranged on the molding cavity pass through the upper mold core and are connected to the silicone flow channel.

[0016] As in the above-mentioned liquid silicone molding hydrogen energy battery plate molding mold, the glue inlet is arranged in the middle of the upper mold plate, the silicone flow channel extends from the middle to the surroundings, and the extended end of the silicone flow channel passes downward through the glue separation plate.

[0017] As mentioned above, in the molding mold for forming a liquid silicone hydrogen energy battery plate, the silicone flow channel includes a straight flow channel and a winding flow channel.

[0018] According to the liquid silicone molding hydrogen energy battery plate molding mold described in the claim, the end of the silicone flow channel is inclined downward along its extension direction and penetrates the glue separation plate.

[0019] As in the above-mentioned forming mold for forming a liquid silicone hydrogen energy battery plate, the upper mold assembly also includes an upper insulation plate, the upper insulation plate is connected between the upper mold core and the glue separation plate, and the upper insulation plate is provided with a plurality of through holes.

[0020] As for the above-mentioned liquid silicone molding hydrogen energy battery plate molding mold, the lower mold assembly includes:

[0021] Next template;

[0022] The lower mold core is connected to a side of the lower mold plate facing the upper mold assembly, and an end surface of the lower mold core facing away from the lower mold plate is the second molding surface.

[0023] As in the above-mentioned liquid silicone molding hydrogen energy battery plate molding mold, the lower mold assembly also includes a lower insulation plate, and the lower insulation plate is connected between the lower mold plate and the lower mold core.

[0024] The utility model has at least the following beneficial effects:

[0025] 1. Liquid silicone covers the surface of the hydrogen energy battery panel and is integrated with the hydrogen energy battery panel to achieve integration with the sealing rubber, thereby improving the electrical insulation performance, sealing performance and production efficiency of the battery panel.

[0026] 2. The design of silicone flow channels and multiple silicone outlets can improve the filling efficiency of liquid silicone, reduce the generation of bubbles and gaps, and ensure the close combination of silicone and solar panels.

[0027] 3. The silicone flow channel consists of a straight flow channel and a winding flow channel. This design helps to optimize the flow characteristics of liquid silicone.

[0028] 4. The end of the silicone runner is tilted downward along its extension direction and penetrates the glue separation plate. This tilted design helps the liquid silicone to form a good flow angle at the end of the runner and reduce flow resistance. The tilted runner end helps to exhaust air and reduce the possibility of bubbles during injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a hydrogen energy battery panel;

[0030] Figure 2 This is a schematic diagram of the structure of an embodiment of the utility model;

[0031] Figure 3 This is an exploded view of an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the upper mold core of the utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the lower mold core of the utility model;

[0034] Figure 6 This is a schematic diagram of the structure of the glue separation plate of the utility model;

[0035] Figure 7 for Figure 6 Cross-sectional view of AA. DETAILED DESCRIPTION

[0036] The utility model provides the following description with reference to the accompanying drawings to help fully understand the various embodiments of the utility model as defined by the claims and their equivalents. The description includes various specific details to help understanding, but these details should be regarded as exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the utility model.

[0037] In the description of the present invention, descriptions of orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to 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 invention.

[0038] It will be understood that when one element (eg, a first element) is “connected” to another element (eg, a second element), the element may be directly connected to the other element or an intervening element (eg, a third element) may be present between the element and the other element.

[0039] The embodiment of the utility model provides a molding die for molding a hydrogen energy battery plate 4 with liquid silicone, comprising:

[0040] The upper mold assembly 1 includes a first molding surface 101, and the first molding surface 101 is formed with a first positioning structure 102;

[0041] The lower mold assembly 2 includes a second molding surface 201 opposite to the first molding surface 101, and the second molding surface 201 is formed with a second positioning structure 202, and the second positioning structure 202 is used to position the hydrogen energy battery plate 4 and cooperate with the first positioning structure 102 to position the upper mold assembly 1 and the lower mold assembly 2;

[0042] The molding cavity 3 , the first molding surface 101 and the second molding surface 201 enclose the molding cavity 3 , and the molding cavity 3 includes a first molding portion 301 for molding the first sealing silicone 42 and a second molding portion 304 for molding the second sealing silicone 42 .

[0043] Before closing the mold, first distinguish the hydrogen energy battery panels 4 that need to be molded with different sealing silicone rubbers 42, such as sealing silicone rubbers 42 with protrusions or sealing silicone rubbers 42 with planar structures, and place the hydrogen energy battery panels 4 in the first molding part 301 or the second molding part 304 in the molding cavity 3 according to the position of the second positioning structure 202, and then close the mold according to the positions of the first positioning structure 102 and the second positioning structure 202, and then inject liquid silicone. At this time, the liquid silicone covers the surface of the hydrogen energy battery panel 4 and is integrated with the hydrogen energy battery panel 4. Finally, after the liquid silicone is shaped, take out the hydrogen energy battery panel 4.

[0044] In some embodiments, the first molded portion 301 includes a first silicone groove 302 formed around the surface of the electrode plate 41 , the first silicone groove 302 is provided with a groove 303 that is deepened toward the groove, and the second molded portion 304 includes a second silicone groove 305 formed around the surface of the electrode plate 41 .

[0045] The first molding part 301 forms a first silicone groove 302 around the surface of the pole plate 41 of the hydrogen energy battery plate 4, which is used to receive liquid silicone and form a first type of sealing silicone 42 area. The first silicone groove 302 is provided with grooves 303, which are deepened and opened inwardly, increasing the filling space of silicone and forming a convex structure of the sealing silicone 42. The second molding part 304 also forms a second silicone groove 305 around the surface of the pole plate 41, which is used to receive liquid silicone and form a second type of sealing silicone 42 area to achieve comprehensive sealing of the battery plate.

[0046] In some embodiments, a plurality of glue outlets 306 are provided in the molding cavity 3 , a glue inlet 103 is provided on the upper mold assembly 1 , a silicone flow channel 104 is provided in the upper mold assembly 1 , and the silicone flow channel 104 connects the glue inlet 103 with the plurality of glue outlets 306 .

[0047] The upper mold assembly 1 is provided with silicone flow channels 104, which start from the glue inlet 103 and are distributed along the designed path to ensure that the liquid silicone can flow evenly to various parts of the molding cavity 3. The molding cavity 3 is provided with multiple glue outlets 306, which are connected to the silicone flow channels 104 and distributed in different areas of the molding cavity 3 to achieve uniform filling of the first and second silicone grooves 305 with liquid silicone. Through the design of the silicone flow channels 104 and multiple glue outlets 306, the filling efficiency of the liquid silicone can be improved, the generation of bubbles and gaps can be reduced, and the close combination of the silicone and the battery panel can be ensured.

[0048] Further, the upper mold assembly 1 comprises:

[0049] An upper template 105, wherein the upper template 105 is provided with a glue inlet 103, and the glue inlet 103 runs through the upper template 105;

[0050] A glue separation plate 106, which is connected to a side of the upper mold plate 105 facing the lower mold assembly 2, and is provided with a silicone flow channel 104;

[0051] The upper mold core 108 is connected to the glue dividing plate 106 and is located on the side of the glue dividing plate 106 away from the upper mold plate 105. The end face of the upper mold core 108 away from the glue dividing plate 106 is the first molding surface 101. The multiple glue outlets 306 provided on the molding cavity 3 pass through the upper mold core 108 and are connected to the silicone flow channel 104.

[0052] The upper mold assembly 1 is composed of three main parts: an upper mold plate 105, a glue distribution plate 106 and an upper mold core 108. The upper mold plate 105 is provided with a glue inlet 103, which runs through the upper mold plate 105 and serves as a channel for injecting liquid silicone into the mold. The glue distribution plate 106 is connected to the side of the upper mold plate 105 facing the lower mold assembly 2, and is provided with a silicone flow channel 104, which is used to distribute liquid silicone from the glue inlet 103 to multiple glue outlets 306 of the upper mold core 108. The upper mold core 108 is connected to the glue distribution plate 106 and is located on the side of the glue distribution plate 106 facing away from the upper mold plate 105. The end face of the upper mold core 108 facing away from the glue distribution plate 106 constitutes a first molding surface 101, which corresponds to the second molding surface 201 of the lower mold assembly 2 to form a molding cavity 3. The plurality of glue outlets 306 on the molding cavity 3 penetrate the upper mold core 108 and are connected to the silicone flow channel 104 , ensuring that the liquid silicone can be evenly filled into each part of the molding cavity 3 .

[0053] Furthermore, the glue inlet 103 is arranged in the middle of the upper mold plate 105 , and the silicone flow channel 104 extends from the middle toward the surroundings, and the extended end of the silicone flow channel 104 passes through the glue separation plate 106 downward.

[0054] The glue inlet 103 is located in the middle of the upper mold plate 105, which is conducive to the symmetrical distribution of the silicone flow channel 104 and improves the filling efficiency and uniformity of the liquid silicone. The silicone flow channel 104 extends from the middle of the glue inlet 103 to the surroundings to form one or more branches to cover the entire area of ​​the upper mold core 108. The extended end of the silicone flow channel 104 passes through the glue separation plate 106 downward and is connected to the glue outlet 306 on the upper mold core 108, completing the transmission of the liquid silicone from the glue inlet 103 to the glue outlet 306.

[0055] Furthermore, the silicone flow channel 104 includes a straight flow channel 109 and a winding flow channel 110 .

[0056] The silicone flow channel 104 is composed of a straight channel 109 and a meandering channel 110, and this design helps to optimize the flow characteristics of the liquid silicone. The straight channel 109 is a straight channel connecting the glue inlet 103 and the glue distribution plate 106. Its design is simple and can quickly transport the liquid silicone from the glue inlet 103 to the glue distribution plate 106. The meandering channel 110 is a channel extending from the straight channel 109 to each glue outlet 306 on the glue distribution plate 106. These flow channels are designed in a meandering shape, which helps to reduce the turbulence and bubbles generated during the flow of liquid silicone. The design of the meandering channel 110 can slow down the flow rate of the liquid silicone, make the silicone more stable during the flow process, reduce air mixing, and thus reduce the formation of bubbles. The design of the meandering channel 110 helps to achieve uniform filling of the liquid silicone in the molding cavity 3, ensuring that the silicone distribution in each area is consistent. The size and shape of the straight channel 109 and the meandering channel 110 are optimized and designed according to the viscosity, flow characteristics and specific requirements of the liquid silicone.

[0057] In some embodiments, the end of the silicone flow channel 104 is inclined downward along its extension direction and penetrates the silicone separation plate 106 .

[0058] The end of the silicone flow channel 104 is inclined downward along its extension direction and penetrates the glue separation plate 106. This inclined design helps the liquid silicone to form a good flow angle at the end of the flow channel and reduce flow resistance. The inclined flow channel end helps to exhaust air and reduce the possibility of bubbles during injection.

[0059] In some embodiments, the upper mold assembly 1 further includes an upper heat insulation plate 111 , which is connected between the upper mold core 108 and the glue separation plate 106 , and the upper heat insulation plate 111 is provided with a plurality of through holes.

[0060] The upper insulation board 111 is connected between the upper mold core 108 and the glue separation board 106, and plays the role of heat insulation and support. The material of the upper insulation board 111 has good heat insulation performance, which can reduce the heat transfer of the mold during the curing process of liquid silicone and maintain the uniformity of the mold surface temperature. The upper insulation board 111 is provided with a plurality of through holes, which allow the liquid silicone in the silicone flow channel 104 to flow to the glue outlet 306 on the upper mold core 108, while reducing the resistance of the upper insulation board 111 to the flow of silicone.

[0061] In some embodiments, the lower mold assembly 2 includes:

[0062] Lower template 203;

[0063] The lower mold core 204 is connected to a side of the lower mold plate 203 facing the upper mold assembly 1 , and an end surface of the lower mold core 204 facing away from the lower mold plate 203 is a second molding surface 201 .

[0064] The end surface of the lower mold core 204 facing away from the lower mold plate 203 forms a second molding surface 201, which corresponds to the first molding surface 101 of the upper mold core 108, ensuring that the liquid silicone is evenly distributed between the two molding surfaces and solidified. When the upper mold assembly 1 and the lower mold assembly 2 are closed, the space between the first molding surface 101 and the second molding surface 201 forms a molding cavity 3 for the injection and solidification of the liquid silicone.

[0065] Furthermore, the lower mold assembly 2 also includes a lower heat insulation plate 205 , which is connected between the lower mold plate 203 and the lower mold core 204 .

[0066] The lower heat insulation board 205 is connected between the lower mold plate 203 and the lower mold core 204 to play the role of heat insulation and support. The material of the lower heat insulation board 205 has good heat insulation performance, which can reduce the heat transfer of the mold during the curing process of liquid silicone and maintain the uniformity of the mold surface temperature.

[0067] The terms and words used in the above description and claims are not limited to the literal meanings, but are only used by the applicant to enable a clear and consistent understanding of the utility model. Therefore, it should be clear to those skilled in the art that the above description of various embodiments of the utility model is provided only for illustration, and not for limiting the utility model as defined by the attached claims and their equivalents.

Claims

1. A liquid silicone molding hydrogen energy battery plate molding mold, characterized in that: include: An upper mold assembly (1) comprises a first molding surface (101), wherein the first molding surface (101) is formed with a first positioning structure (102); A lower mold assembly (2) comprises a second molding surface (201) opposite to the first molding surface (101), the second molding surface (201) being formed with a second positioning structure (202), the second positioning structure (202) being used to position the hydrogen energy battery plate and cooperate with the first positioning structure (102) to position the upper mold assembly (1) and the lower mold assembly (2); A molding cavity (3), wherein the first molding surface (101) and the second molding surface (201) enclose the molding cavity (3), and the molding cavity (3) comprises a first molding portion (301) for molding a first sealing silicone and a second molding portion (304) for molding a second sealing silicone.

2. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 1 is characterized in that: The first molding part (301) comprises a first silicone groove (302) formed around the surface of the electrode plate, the first silicone groove (302) is provided with a groove (303) that is deepened toward the groove, and the second molding part (304) comprises a second silicone groove (305) formed around the surface of the electrode plate.

3. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 1, characterized in that: The molding cavity (3) is provided with a plurality of glue outlets (306), the upper mold assembly (1) is provided with a glue inlet (103), the upper mold assembly (1) is provided with a silicone flow channel (104), and the silicone flow channel (104) connects the glue inlet (103) with the plurality of glue outlets (306).

4. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 3 is characterized in that: The upper mold assembly (1) comprises: An upper template (105), wherein the upper template (105) is provided with the glue inlet (103), and the glue inlet (103) runs through the upper template (105); A glue separation plate (106), the glue separation plate (106) being connected to a side of the upper mold plate (105) facing the lower mold assembly (2), the glue separation plate (106) being provided with the silicone flow channel (104); An upper mold core (108), the upper mold core (108) is connected to the glue separation plate (106) and is located on the side of the glue separation plate (106) away from the upper mold plate (105), the end surface of the upper mold core (108) away from the glue separation plate (106) is the first molding surface (101), and the multiple glue outlets (306) provided on the molding cavity (3) pass through the upper mold core (108) and are connected to the silicone flow channel (104).

5. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 4, characterized in that: The glue inlet (103) is arranged in the middle of the upper mold plate (105), and the silicone flow channel (104) extends from the middle toward the surroundings, and the extended end of the silicone flow channel (104) passes downward through the glue separation plate (106).

6. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 5, characterized in that: The silica gel flow channel (104) comprises a straight flow channel (109) and a winding flow channel (110).

7. A forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 5 or 6, characterized in that: The end of the silicone flow channel (104) is inclined downward along its extension direction and penetrates the silicone separation plate (106).

8. A forming mold for forming a liquid silicone hydrogen energy battery plate according to any one of claims 4 to 6, characterized in that: The upper mold assembly (1) further comprises an upper heat insulation plate (111), wherein the upper heat insulation plate (111) is connected between the upper mold core (108) and the glue separation plate (106), and the upper heat insulation plate (111) is provided with a plurality of through holes.

9. A forming mold for forming a liquid silicone hydrogen energy battery plate according to any one of claims 1 to 6, characterized in that: The lower mold assembly (2) comprises: Lower template (203); A lower mold core (204), the lower mold core (204) is connected to a side of the lower mold plate (203) facing the upper mold assembly (1), and the end surface of the lower mold core (204) facing away from the lower mold plate (203) is the second molding surface (201).

10. The forming mold for forming a liquid silicone hydrogen energy battery plate according to claim 9, characterized in that: The lower mold assembly (2) further comprises a lower heat insulation plate (205), wherein the lower heat insulation plate (205) is connected between the lower mold plate (203) and the lower mold core (204).

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