Extruded parts, battery casings with extruded parts, manufacturing methods of extruded parts, extrusion tools

Abstract

The present invention discloses an extrusion (10) having the following features: - the extrusion (10) is formed by extruding at least one polymer melt (80), wherein the polymer melt (80) has two melt tips (82, 83), the melt tips forming two material inner edges (22, 23) of the extrusion (10) in the solidified state of the polymer melt (80); - the two material inner edges (22, 23) are materially connected and define a linear joint (40) of the extrusion (10), wherein the joint (40) is arranged within a connection region (60) of the extrusion (10); and - the extrusion (10) has at least one fiber grid (70), the fiber grid being arranged within the connection region (60) of the extrusion (10) and connected to the extrusion (10) such that the fiber grid (70) bridges the two material inner edges (22, 23). The present invention also discloses a battery housing with an extrusion (10) for a traction battery. The present invention also discloses a traction battery having such a battery casing. The present invention also discloses a method and an extrusion tool for manufacturing an extrusion (10).

Description

[0001] This invention relates to an extrusion piece and a battery casing with the extrusion piece for automotive traction batteries. The invention also relates to a method for manufacturing the extrusion piece using an extrusion tool. Finally, the invention relates to an extrusion tool for manufacturing the extrusion piece.

[0002] Extruded parts with through-holes, such as battery casings made of plastic, can be manufactured entirely without tools (i.e., without post-extrusion manufacturing steps) using conventional extrusion tools. However, extruded parts manufactured in this way exhibit reduced stability within the through-hole region. This is because, during the extrusion manufacturing process, as the core of the extrusion tool is circulated, the melt front of the polymer melt deforms on the core, causing two melt fronts (formed by the circulation of one melt front of the polymer melt on the core) to meet and weld together, moving away from the core along the flow direction of the polymer melt (or its melt front). The linear joint defined by these two connected melt fronts is weakened.

[0003] The two molten fronts had already partially cooled at the point of contact, thus reducing the joint strength.

[0004] Another challenge with extrusions made by extruding polymer melts containing fibrous materials such as glass fibers or carbon fibers is the general orientation of the fibers in the region at the melt tip during extrusion, such that the longitudinal elongation of the fibers is parallel to the melt tip and therefore parallel to the seam of the extrusion. Consequently, the fibers do not contribute to the stability of the extrusion within its through-hole region. In particular, the fibers do not contribute to the stability of the extrusion's seam.

[0005] Therefore, the existing manufacturing method involves inserting through-holes into the extruded part after the extrusion process is complete. These through-holes can be inserted by stamping, drilling, or cutting. Consequently, this extrusion manufacturing process is complex and expensive. Furthermore, the component being manufactured is subject to severe contamination during the insertion of the through-holes, requiring laborious and complete removal from the component.

[0006] Larger extrusions must be formed from multiple polymer melts because the melt tips maintain their plasticity only along a limited deformation path during extrusion. The stability of the resulting extrusion is reduced along the contact line of the respective polymer melt tips, i.e., along the seam of the extrusion. For these reasons, the extrusion seam of extrusions formed from multiple polymer melts is also weakened.

[0007] The purpose of this invention is to provide an extruded part with improved stability.

[0008] The solution of the present invention to achieve the above-mentioned objective is an extrusion having the features of claim 1. Advantageous technical solutions to the extrusion are described in the dependent claims of claim 1.

[0009] Specifically, the solution of the present invention to achieve the above-mentioned objective is an extrusion for a traction battery, wherein the extrusion is formed by extruding at least one polymer melt, wherein the polymer melt has two melt tips, the melt tips forming two material inner edges of the extrusion in the solidified state of the polymer melt. These two material inner edges are materially joined and define a linear joint of the extrusion, wherein the joint is arranged in a connecting region of the extrusion. The extrusion of the present invention has at least one fiber grid arranged in the connecting region of the extrusion and connected to the extrusion such that the fiber grid bridges the two material inner edges.

[0010] Preferably, the extrusion is constructed as a battery casing for a vehicle traction battery.

[0011] The extrusion of the present invention exhibits high stability, particularly in its joining region. This is because a fiber grid is provided in the joining region of the extrusion to bridge the two inner edges of the materials. By strategically placing the fiber grid in the extrusion tool, the fiber orientation of the fiber grid in the extrusion tool can be specifically influenced so that the fibers of the extrusion bridge the two inner edges of the materials. For this purpose, the fibers of the fiber grid have longitudinal extension, which is at least partially perpendicular to the seam of the extrusion.

[0012] This improves the stability of extrusions with through holes within the through hole region. It also improves the stability of extrusions made from at least two polymer melts.

[0013] The fiber grid is a separate component that is bonded to the polymer melt during the manufacturing process of the extrusion, wherein the bond can be a form-fit and / or a material-bonded bond. The fiber grid may also be referred to as a fiber grid pad or a fiber grid insert.

[0014] The connecting region of the extrusion is the extrusion region adjacent to the inner edge of the material. Furthermore, both the inner and outer surfaces of the extrusion, adjacent to the inner edge of the material where it connects to the material, belong to the connecting region of the extrusion.

[0015] Linear joints can have straight sections and curved sections.

[0016] The fibers of the fiber grid are preferably constructed as glass fibers and / or carbon fibers.

[0017] The polymer melt preferably comprises polyamide and / or polypropylene and / or polycarbonate and / or polyethylene, or a mixture of the above plastics. More preferably, the polymer melt is composed of polyamide and / or polypropylene and / or polycarbonate and / or polyethylene, or a mixture of the above plastics.

[0018] The polymer melt preferably contains a fibrous material disposed within a matrix material (polyamide and / or polypropylene and / or polycarbonate and / or polyethylene, or a mixture of the above plastics). The fibrous material of the polymer melt preferably contains glass fibers and / or carbon fibers.

[0019] The extrusion is formed, for example, by extruding a polymer melt having two melt tips that, in the solidified state of the polymer melt, form two material inner edges of the extrusion, wherein these two melt tips are formed by a circulating tool core. The two material inner edges are materially joined and define a linear joint of the extrusion, wherein the joint is arranged within a connecting region of the extrusion. The extrusion has at least one fiber grid arranged within the connecting region of the extrusion and connected to the extrusion such that the fiber grid bridges the two material inner edges.

[0020] Further illustratively, the extrusion is formed, for example, by extruding two polymer melts, wherein a first polymer melt has a first melt front and a second polymer melt has a second melt front, the melt fronts forming two inner material edges of the extrusion in the solidified state of the polymer melts. These two inner material edges are materially joined and define a linear joint of the extrusion, wherein the joint is arranged within a connecting region of the extrusion. The extrusion has at least one fiber grid arranged within the connecting region of the extrusion and connected to the extrusion such that the fiber grid bridges the two inner material edges.

[0021] The connection of the material joint of the inner edges of the at least two materials is preferably achieved by welding the inner edges of the at least two materials together.

[0022] Preferably, the extruder is constructed such that at least 50% of the fibers of the fiber grid have a certain longitudinal extension, which is transverse to the seam and forms an angle of 45° to 90° with the seam.

[0023] This construction scheme for extruded parts further enhances their stability.

[0024] In this invention, the 90° angle formed by the seam and the longitudinal extension of the fiber should be understood as the longitudinal extension of the fiber being perpendicular to the seam of the extrusion.

[0025] Preferably, 50% to 90% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of 45° to 90° with the seam. Fiber grids with this structure can achieve good stability of the extruded component within the connection area.

[0026] More preferably, 50% to 90% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of 60° to 90° with the seam. Fiber grids with this structure can achieve further improved stability of the extruded component within the connection area.

[0027] More preferably, 70% to 90% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of 60° to 90° with the seam. Fiber grids with this structure can achieve further improved stability of the extruded component within the connection area.

[0028] More preferably, 70% to 90% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of 75° to 90° with the seam. Fiber grids with this structure can achieve further improved stability of the extruded component within the connection area.

[0029] More preferably, 70% to 90% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of 85° to 90° with the seam. Fiber grids with this structure can achieve further improved stability of the extruded component within the connection area.

[0030] More preferably, 80% of the fibers in the fiber grid have a certain longitudinal extension, which forms an angle of approximately 90° with the seam. This structure of the fiber grid allows for further improved stability of the extruded component within the connection area.

[0031] Preferably, the extruder is constructed such that the at least one fiber grid abuts the inner surface of the extruder.

[0032] This type of extrusion exhibits improved bending stability. Particularly when the extrusion is constructed as a shell, this structure provides high stability even when the shell bends due to internal overpressure.

[0033] The feature that the fiber grid is adjacent to the inner surface of the extruder should be understood as the fiber grid being surrounded and / or penetrated by the material of the extruder, wherein the outer surface of the fiber grid coincides with or is arranged opposite to the inner surface of the extruder.

[0034] Preferably, the extruder is constructed such that the at least one fiber grid is adjacent to the outer surface of the extruder.

[0035] This type of extrusion exhibits improved bending stability. Particularly when the extrusion is constructed as a shell, this structure provides high stability even when the shell bends due to internal negative pressure.

[0036] The feature that the fiber grid is adjacent to the outer surface of the extruder should be understood as the fiber grid being surrounded and / or penetrated by the material of the extruder, wherein the outer surface of the fiber grid coincides with or is arranged opposite to the outer surface of the extruder.

[0037] Preferably, the extruder is constructed such that the fiber grid is embedded in a material matrix, wherein the matrix material is bonded to the polymer melt material.

[0038] This type of extrusion structure offers further enhanced stability. By embedding the fiber material within the matrix material, forces can be better transferred from the extrusion to its fibers within the component, also known as an organic board. Extrusions with this structure enhance the penetration of the plastic material into the fiber grid, thereby improving the stability of the extrusion.

[0039] Preferably, the matrix material comprises polyamide and / or polypropylene and / or polycarbonate and / or polyethylene, or a mixture of the above plastics. More preferably, the matrix material is composed of polyamide and / or polypropylene and / or polycarbonate and / or polyethylene, or a mixture of the above plastics.

[0040] Another object of the present invention is to provide a battery casing that has high stability and low manufacturing cost.

[0041] The solution of the present invention to achieve the above-mentioned objective is a battery housing having the features of claim 6. More specifically, the solution of the present invention to achieve the above-mentioned objective is a battery housing for a traction battery, wherein the battery housing has at least one extrusion member as previously described in this specification.

[0042] The extrusion member is preferably constructed as a battery casing, which in turn is constructed as a battery upper casing or a battery lower casing. More preferably, the battery casing has a first extrusion member constructed as a battery upper casing and a second extrusion member constructed as a battery lower casing.

[0043] Another object of the present invention is to provide a traction battery that has high stability and low manufacturing cost.

[0044] The solution of the present invention to achieve the above-mentioned objective is a traction battery having the features of claim 7. More specifically, the solution of the present invention to achieve the above-mentioned objective is a traction battery for an automobile, wherein the traction battery has a battery housing as previously described in this specification, wherein at least one battery module is accommodated in the internal space of the battery housing.

[0045] Another object of the present invention is to provide a method for manufacturing extrusions using an extrusion tool, wherein the method enables the manufacturing of extrusions with greater stability and lower cost.

[0046] The solution of the present invention to achieve the above-mentioned objective is a method for manufacturing an extruded part having the features of claim 8. Advantageous technical solutions are described in the dependent claims of claim 8.

[0047] More specifically, the solution of the present invention to achieve the above-mentioned objective is a method for manufacturing extruded parts using an extrusion tool, wherein the method comprises the following steps:

[0048] - Place at least one polymer melt into the bottom die of the extrusion tool in the open position;

[0049] - Place the fiber grid in the extrusion tool;

[0050] - Close the extrusion tool so that the punch of the extrusion tool comes into contact with the at least one polymer melt, and the polymer melt is shaped by applying pressure with the punch, and the fiber grid is surrounded from both sides by the two melt front ends of the at least one polymer melt and connected to the polymer melt.

[0051] The advantage of the method of the present invention is that it can manufacture extrusions with high stability, particularly in the joint region, wherein manufacturing costs are significantly reduced due to the toolless manufacturing of the extrusions. This is because a fiber grid is provided in the joint region of the extrusion to bridge the two inner edges of the materials. By strategically placing the fiber grid in the extrusion tool, the fiber orientation of the fiber grid in the extrusion tool can be strategically influenced so that the fibers of the extrusion bridge the two inner edges of the materials. For this purpose, the fibers of the fiber grid have longitudinal extension, which is at least partially perpendicular to the seam of the extrusion.

[0052] This improves the stability of extrusions with through holes within the through hole region. It also improves the stability of extrusions made from at least two polymer melts.

[0053] The extruded component is preferably constructed as a battery casing, which is further constructed as a battery upper casing or a battery lower casing.

[0054] Preferably, the fiber grid is placed in the extrusion tool in such an orientation that at least 50% of the fibers of the fiber grid have a certain longitudinal extension, which is transverse to the seam to be formed in the extrusion and forms an angle of 45° to 90° with the seam.

[0055] Preferably, the fiber grid is placed in the extrusion tool in such an orientation that 50% to 90% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of 45° to 90° with the seam to be formed in the extrusion.

[0056] Preferably, the fiber grid is placed in the extrusion tool in such an orientation that 50% to 90% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of 60° to 90° with the seam to be formed in the extrusion.

[0057] More preferably, the fiber grid is placed in the extrusion tool in such an orientation that 70% to 90% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of 60° to 90° with the seam to be formed in the extrusion.

[0058] More preferably, the fiber grid is placed in the extrusion tool in such an orientation that 70% to 90% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of 75° to 90° with the seam to be formed in the extrusion.

[0059] More preferably, the fiber grid is placed in the extrusion tool in such an orientation that 70% to 90% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of 85° to 90° with the seam to be formed in the extrusion.

[0060] More preferably, the fiber grid is placed in the extrusion tool in such an orientation that 80% of the fibers of the fiber grid have a certain longitudinal extension, which forms an angle of approximately 90° with the seam to be formed in the extrusion.

[0061] Preferably, the method is designed such that the fiber grid is placed in the extrusion tool such that the fiber grid is adjacent to the core of the die, thereby positioning the core between the polymer melt and the fiber grid.

[0062] This design method enables extruded components with at least one through-hole to exhibit high stability, particularly within the through-hole region. This is because the fiber grid contributes to the stability of the extruded component in the area where the joint to be formed connects the through-holes.

[0063] The result of this feature, in which the core is arranged between the polymer melt and the fiber grid, is that the fiber grid is arranged downstream of the core in terms of the flow direction of the polymer melt or its front end.

[0064] Preferably, the fiber grid is positioned on the inner surface of the extrusion member using this method. More preferably, the fiber grid is positioned on the outer surface of the extrusion member using this method. Even more preferably, one fiber grid is positioned on the outer surface of the extrusion member and another fiber grid is positioned on the inner surface of the extrusion member using this method.

[0065] More preferably, the method is designed such that at least two polymer melts are placed in the bottom die of an extrusion tool in the open position.

[0066] A fiber grid is placed between the two polymer melts. The extrusion tool is then closed so that the punch of the extrusion tool comes into contact with the two polymer melts, and the polymer melts are shaped by applying pressure with the punch. The fiber grid is enveloped by the first melt front end of the first polymer melt and the second melt front end of the second polymer melt and is connected to these polymer melts.

[0067] This design method enables the production of large-area extrusions that require the use of more than one polymer melt, and these large-area extrusions also exhibit high stability, particularly in their joint areas.

[0068] Another object of the present invention is to provide an extrusion tool for manufacturing extrusions, wherein the extrusion tool is capable of manufacturing extrusions with greater stability and lower cost.

[0069] The solution of the present invention to achieve the above-mentioned objective is an extrusion tool for manufacturing extruded parts having the features of claim 11. Advantageous technical solutions are described in the dependent claims of claim 11.

[0070] More specifically, the solution of the present invention to achieve the above-mentioned objective is an extrusion tool for manufacturing extrusions for traction batteries and / or for housings of traction batteries, wherein the extrusion tool has a bottom die and a punch, and wherein the bottom die of the extrusion tool has a receiving device for receiving a fiber grid.

[0071] The extrusion tool of the present invention has the advantage of producing extrusions with high stability, particularly in the joint region, where manufacturing costs are significantly reduced due to tool-less extrusion manufacturing. This is because a fiber grid is provided in the joint region of the extrusion to bridge the two inner edges of the material. By strategically placing the fiber grid in the extrusion tool, the fiber orientation of the fiber grid in the extrusion tool can be strategically influenced so that the fibers of the extrusion bridge the two inner edges of the material. For this purpose, the fibers of the fiber grid have longitudinal extension, which is at least partially perpendicular to the seam of the extrusion.

[0072] This improves the stability of extrusions with through holes within the through hole region. It also improves the stability of extrusions made from at least two polymer melts.

[0073] The extruded component is preferably constructed as a battery casing, which is further constructed as a battery upper casing or a battery lower casing.

[0074] Preferably, the extrusion tool is constructed such that the receiving device is constructed as a recess in the bottom mold.

[0075] This extrusion tool structure allows for very simple fixing or positioning of the fiber grid within the extrusion tool without the need for additional holding devices to retain the fiber grid.

[0076] More preferably, the extrusion tool is constructed such that it has a tool component adjustable between a first position and a second position along the pressing direction of the punch. Furthermore, the extrusion tool has a core that is adjustable between a first position and a second position along an extension direction transverse to the pressing direction. The tool component has a receiving port for receiving the core, wherein the core in its second position can only be inserted into the receiving port of the tool component when the tool component is in its second position.

[0077] This type of extrusion tool can be used to manufacture extruded parts with complex geometries, such as battery casings with through holes in arbitrary locations. For example, in the case of an extruded part having multiple wall segments at certain angles to each other, the through holes can be arranged on any of the wall segments, thus enabling the toolless manufacture of complex extruded parts with arbitrarily arranged through holes.

[0078] Other advantages, details, and features of the invention will become apparent from the embodiments described below. Specifically:

[0079] Figure 1A A top view of the die with a core into which the polymer melt is inserted at the start of the extrusion manufacturing process, wherein the punch of the extrusion tool and the fiber grid of the extrusion are not shown;

[0080] Figure 1Bfor Figure 1A The extrusion tool shown is viewed at a future point in the manufacturing process, with the core already surrounded by polymer melt.

[0081] Figure 1C for Figure 1A and 1B The view shown is of the extrusion tool at the end of the manufacturing process, where the extruded part has been made, and in Figure 1C In the middle, a fiber grid is shown in the connection area of ​​the extrusion;

[0082] Figure 2A A top view of the bottom die of the extrusion tool with multiple cores during the manufacturing process of the extrusion, including the polymer melt in the forming process, wherein the fiber grid of the extrusion and the punch of the extrusion tool are not shown;

[0083] Figure 2B for Figure 2A The image shows a view of the extrusion tool at a future point in the manufacturing process of the extruded part, where... Figure 2A Unlike the previous example, the fiber grid of the extrusion is shown here;

[0084] Figure 3A This is a top view of the extrusion of the present invention having multiple through holes, wherein the fiber grid of the extrusion is not shown;

[0085] Figure 3B for Figure 3A The extrusion shown is along Figure 3A The cross-sectional view of plane AA shown;

[0086] Figure 4a A top view of an extrusion tool used to manufacture an extrusion piece made of at least two polymer melts;

[0087] Figure 4b for Figure 4a The cross-sectional view of the extrusion tool shown; and

[0088] Figure 5 This is a cross-sectional view of the extrusion tool according to another embodiment of the present invention.

[0089] In the following description, the same reference numerals denote the same components or features; therefore, a description of a component with reference to one drawing also applies to other drawings, thus avoiding repetition. Furthermore, features described in connection with one embodiment can also be used individually in other embodiments.

[0090] Figure 1A This is a top view of the bottom die 100 of the extrusion tool, which has a core 101. Figure 5 This is a cross-sectional view of the extrusion tool. (See image.) Figure 1AAs shown, polymer melt 80 is placed into bottom mold 101, and the polymer melt can be deformed by applying pressure with punch 110 of extrusion tool. By applying pressure to polymer melt 80 with punch 110, polymer melt 80 undergoes extrusion deformation, causing the melt tip 81 of polymer melt 80 to diffuse in the flow direction indicated by arrow 90. Core 101 protrudes from the surface of bottom mold 100, so that the melt tip 81 of polymer melt 80 necessarily circulates around core 101.

[0091] from Figure 1B It can be seen Figure 1A The extrusion tool shown is at a future point in the manufacturing process of the extruded part 10, where the polymer melt 80 has further deformed and has surrounded the core 101. As the core 101 is circulated by the polymer melt 80, two melt fronts 82, 83 are formed downstream of the core 101 along the flow direction of the melt fronts, which come into contact with each other and are thus welded together in the subsequent process of manufacturing the extruded part 10.

[0092] This state is Figure 1C As shown, the extrusion process has ended. As illustrated, the two melt fronts 82 and 83 are welded together to form the inner edges 22 and 23 of the extruded part 10, respectively. The inner edges 22 and 23 are welded together to form a linear joint 40. Figure 1C As shown, a fiber grid 70 is arranged in the connection area 60 of the extrusion 10, wherein the fiber grid 70 bridges the inner edges 22 and 23 of the material. That is, the corresponding fibers of the fiber grid 70 extend transversely to the extension direction of the joint 40.

[0093] Therefore, the method of manufacturing the extrusion 10 using an extrusion tool can produce an extrusion 10 with high stability. The method includes placing at least one polymer melt 80 in the bottom die 100 of the extrusion tool in the open position. A fiber grid 70 is also placed in the extrusion tool. By closing the extrusion tool to bring the punch 110 of the extrusion tool into contact with the polymer melt 80, pressure is applied to the polymer melt 80 to shape it, such that the fiber grid 70 is surrounded from both sides by the two melt front ends 82, 83 of the polymer melt 80 and connected to the polymer melt 80.

[0094] In this manufacturing process, an extrusion 10 is formed by deforming at least one polymer melt 80. The two melt tips 82, 83 of the polymer melt 80 form the two material inner edges 22, 23 of the extrusion 10 in the solidified state of the polymer melt 80. The material inner edges 22, 23 are joined together by welding, and define a linear seam 40 of the extrusion 10. The seam 40 is arranged within a connection region 60 of the extrusion 10, wherein the connection region 60 includes the immediate proximity of the material inner edges 22, 23. The extrusion 10 has a fiber grid 70, and the extrusion 10 may also have multiple fiber grids 70. The fiber grids 70 are arranged within the connection region 60 of the extrusion 10 and are connected to the extrusion in such a way that the fiber grids 70 bridge the two material inner edges 22, 23. The fiber grids 70 may also extend over the entire surface of the extrusion 10. In this process, each fiber of the fiber grid 70 extends transversely to the extension direction of the joint 40, so that each fiber of the fiber grid 70 bridges the inner edges 22 and 23 of the two materials.

[0095] The extrusion 10 is preferably constructed as a battery casing 10. The fiber grid 70 preferably abuts the inner surface of the extrusion 10. The fiber grid 70 may also abut the outer surface of the extrusion 10. To further improve the stability of the extrusion 10, two fiber grids 70 may be provided, arranged on both sides of the extrusion 10, with one fiber grid abutting the inner surface of the extrusion 10 and the other fiber grid 70 abutting the outer surface of the extrusion 10.

[0096] The fiber grid 70 can be constructed such that the fiber material is embedded in a material matrix, wherein the matrix material is bonded to or in conjunction with the polymer melt 80 or the polymer melt 80 material.

[0097] exist Figure 2A and 2B The manufacturing process of another extrusion 10 is schematically shown in the figure. Figure 2A A top view of the bottom die 100 of the extrusion tool, having multiple cores 101, 102, during the manufacturing process of the extruded part 10, including the polymer melt 80 in the forming process. Figure 2A The fiber grid 70 of the extruded part 10 and the punch 110 of the extrusion tool are not shown. Figure 2B As shown in the image.

[0098] As shown in the figure, the extrusion tool has five cores 101 and 102. The diameter of the first core 101 is larger than that of the other four cores 102. Figure 2A In the middle, the extrusion tool is in the extrusion process earlier than Figure 2B The time point. As shown in the figure, at Figure 2AIn this state, the melt tip 81 of the polymer melt 80 is still a certain distance away from the cores 101 and 102. During the subsequent extrusion process, the polymer melt 80 surrounds the cores 101 and 102, such that downstream of the respective cores 101 and 102, the corresponding melt tips 82 and 83 of the polymer melt 80 connect and form the inner material edges 22 and 23 of the extruded part 10. Figure 2B As shown, the fiber grid 70 has a certain size such that the fiber grid 70 covers the entire area of ​​the extruder 10 used to form the through hole 14 in the extruder 10.

[0099] Figure 3A and 3B An extrusion 10 manufactured in the manner described above is shown, wherein FIG. 10 is a top view of the extrusion, and wherein... Figure 3B for Figure 3A The extrusion 10 is shown as a cross-sectional view along section AA. The extrusion 10 has three wall sections: a first wall section 11, a second wall section 12, and a third wall section 13. Wall sections 11, 12, and 13 are at an angle to each other. As shown, a through-hole 14 is constructed in the second wall section 12, formed by circulating the core 101. Other pores created by circulating the polymer melt 80 through the core 102 are not included. Figure 3B As shown in the image.

[0100] Figure 4a and 4b Another extrusion tool for manufacturing the extruded part 10 is shown in the figure. Figure 4a This is a top view of the extrusion tool. Figure 4b for Figure 4a The figure shows a cross-sectional view of the extrusion tool along plane AA. As shown, two polymer melts 80 are placed into the bottom die 100 of the extrusion tool. A fiber grid 70 is arranged between the two polymer melts 80, such that through the deformation of the two polymer melts 80, the front end 82 of the first melt and the front end 83 of the second melt come into contact within the area of ​​the fiber grid 70. Subsequently, the melt front ends 82 and 83, which are materially connected, form the inner material edges 22 and 23 of the finished extrusion 10, which in turn form the seam 40 of the extrusion.

[0101] like Figure 4b As shown, the bottom mold 100 has a receiving device 103 in the form of a recess 103 for inserting the fiber grid 70. Thus, the fiber grid 70 is fixedly positioned in the bottom mold 100 during the manufacturing process of the extrusion 10.

[0102] Figure 5 This is a cross-sectional view of the extrusion tool. As previously described, the extrusion tool has a die 100 and a punch 110. The polymer melt 80, arranged between the die 100 and the punch 110, is deformed by pressing the punch 110 down in the pressing direction P. Figure 5As shown, the extrusion tool has a tool component 120 that is adjustable between a first position and a second position along the pressing direction P of the punch 110. It can also be seen from the figure that a movable core 101 is arranged in the bottom die 101, which is adjustable between a first position and a second position along an extension direction R transverse to the pressing direction P. Figure 5 In the extrusion tool shown, the core 101 is in a second orientation, and the tool component 120 is in a second position. The tool component 120 has a receiving port 121 for receiving the core 101, wherein the core 101 in its second orientation can only be fed into the receiving port 121 of the tool component 120 when the tool component 120 is in its second position.

[0103] Appendix Label Table

[0104]

Claims

1. An extruded part (10) having the following characteristics: - The extrusion (10) is formed by extruding at least one polymer melt (80), wherein the polymer melt (80) has two melt fronts (82, 83), and the melt fronts form two material inner edges (22, 23) of the extrusion (10) in the solidified state of the polymer melt (80). - The two inner edges (22, 23) of the materials are connected in a material-joint manner and define a linear joint (40) of the extrusion (10), wherein the joint (40) is arranged within the connection area (60) of the extrusion (10); as well as - The extrusion (10) has at least one fiber grid (70) which is arranged at least in the connection area (60) of the extrusion (10) and connected to the extrusion (10) such that the fiber grid (70) bridges the two inner edges (22, 23) of the material.

2. The extruded part (10) according to claim 1, characterized in that, At least 50% of the fibers of the fiber grid (70) have a certain longitudinal extension, which is transverse to the seam (40) and forms an angle of 45° to 90° with the seam (40).

3. The extrusion (10) according to any one of the preceding claims, characterized in that, The at least one fiber grid (70) is adjacent to the inner surface of the extruder (10).

4. The extrusion (10) according to any one of the preceding claims, characterized in that, The at least one fiber grid (70) is adjacent to the outer surface of the extruder (10).

5. The extrusion (10) according to any one of the preceding claims, characterized in that, The fiber grid (70) is embedded in a material matrix, wherein the matrix material is bonded to the polymer melt (80) material.

6. A battery housing for a traction battery, wherein the battery housing has at least one extrusion member (10) according to any one of the preceding claims.

7. A traction battery for an automobile, wherein the traction battery has a battery housing according to claim 6, wherein at least one battery module is housed in the interior space of the battery housing.

8. A method for manufacturing an extruded part (10) using an extrusion tool, wherein the method comprises the following steps: - Place at least one polymer melt (80) in the bottom die (100) of the extrusion tool in the open position; - Place the fiber grid (70) in the extrusion tool; - Close the extrusion tool so that the punch (110) of the extrusion tool comes into contact with the at least one polymer melt (80) and the polymer melt (80) is shaped by applying pressure with the punch (110) and the fiber grid (70) is surrounded from both sides by the two melt front ends (82, 83) of the at least one polymer melt (80) and connected to the polymer melt (80).

9. The method according to claim 8, characterized in that, The fiber grid (70) is placed in the extrusion tool such that the fiber grid (70) is arranged adjacent to the core (101, 102) of the bottom die (100), thereby such that the core (101, 102) is arranged between the polymer melt (80) and the fiber grid (70).

10. The method according to claim 8 or 9, characterized by the following features: - Place at least two polymer melts (80) into the bottom die (100) of the extrusion tool in the open position; - Place the fiber grid (70) between the two polymer melts (80); - Close the extrusion tool so that the punch (110) of the extrusion tool comes into contact with the two polymer melts (80) and the polymer melts (80) are formed by applying pressure with the punch (110), and the fiber grid (70) is covered by the first melt front end (82) of the first polymer melt and the second melt front end (83) of the second polymer melt and connected to the polymer melts (80).

11. An extrusion tool for manufacturing an extrusion (10) for a traction battery, wherein the extrusion tool has a die (100) and a punch (110), wherein the die (100) has a receiving device (103) for receiving a fiber grid (70), wherein the extrusion tool is characterized by the following features: - The extrusion tool has a tool component (120) that can be adjusted between a first position and a second position along the pressing direction (P) of the punch (110); - The extrusion tool has at least one core (101, 102) that can be adjusted between a first position and a second position along an extension direction (R) transverse to the pressing direction (P); - The tool component (120) has at least one receiving port (121) for receiving the core (101, 102), wherein the core (101, 102) can only be fed into the receiving port (121) of the tool component (120) in its second orientation when the tool component (120) is in its second position.

12. The extrusion tool according to claim 11, characterized in that, The receiving device (103) is constructed as a recess (103) in the bottom mold (100).

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