Pole and pole assembly comprising same

Abstract

The invention provides a pole and a pole assembly comprising the same, and relates to the technical field of battery accessories. The pole comprises an internal connection section, a sealing section and an external connection section; a polygonal round cake structure is arranged between the internal connection section and the sealing section so as to improve the torsion of the pole and the upper plastic; a first step is formed between the external connection section and the sealing section and used for being in sealing fit with a sealing piece. The pole assembly comprises a pole, an insulating part, a sealing part and an aluminum ring; the pole is arranged in the inner cavity of the aluminum ring, and the external section protrudes out of the bottom of the aluminum ring; the sealing piece is clamped between the aluminum ring and the sealing section; the insulating part is arranged between the aluminum ring and the pole; the aluminum ring is provided with an anti-twisting groove and an annular convex rib, so that the torsion performance and the bonding strength are improved. According to the invention, the sealing reliability, the torsion stability, the overflowing capability and the assembly precision are improved.

Description

Technical Field

[0001] This invention relates to the field of battery accessory technology, and in particular to an electrode post and a post assembly containing the electrode post, which is suitable for battery structures such as lithium-ion batteries and energy storage batteries that require high sealing performance, high torsional stability and good insulation performance. Background Technology

[0002] Terminals are key components for achieving internal and external electrical connections in batteries, and are widely used in lithium-ion batteries, energy storage batteries, and other applications. In existing technologies, terminals are mostly cylindrical structures of equal diameter, and the sealing method mainly relies on a single sealing ring. This results in problems such as insufficient sealing reliability, susceptibility to misalignment during assembly, and poor compatibility between insulation and sealing components. Furthermore, the fit between the terminals and the cover plate and insulation components is prone to loosening, leakage, and creepage, posing safety hazards that affect battery life and safety performance.

[0003] Therefore, there is an urgent need for a type of pole and pole assembly that is sealed stably, assembled reliably, and has good insulation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an electrode post and an electrode post assembly containing the same, so as to improve sealing reliability, assembly positioning accuracy and insulation safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides an electrode post, comprising a cylindrical electrode post body, wherein the electrode post body includes an inner section, a sealing section, and an outer section connected in sequence; wherein: The diameter of the inner section is smaller than the diameter of the sealing section, and a recessed area is formed between the two. The recessed area is provided with a polygonal disc structure to enhance the torque between the pole and the upper plastic. The diameter of the outer section is smaller than the diameter of the sealing section, so as to form a first step between the two, which is used to seal with the sealing element.

[0006] This invention enhances the torsional resistance between the pole and the upper plastic by setting a polygonal disc structure in the recessed area, thus preventing relative rotation during use; at the same time, the stability and reliability of the sealing structure are improved by the cooperation of the first step and the sealing element.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] As a further improvement of the present invention, the polygonal disc structure is a triangular, quadrangular, pentagonal, or hexagonal concave-convex structure.

[0009] The polygonal structure of this invention forms an interlocking groove with the upper plastic during injection molding, which further improves the torsional resistance. In addition, different numbers of angles can be selected according to the processing technology to flexibly adapt to different specification requirements.

[0010] As a further improvement of the present invention, the corners of the polygonal disc structure are rounded transition structures.

[0011] The circular arc transition of this invention can reduce stress concentration, improve structural strength, and facilitate processing and molding, while avoiding damage to the plastic during assembly.

[0012] As a further improvement of the present invention, the end of the outer segment protrudes beyond the bottom plane of the aluminum ring.

[0013] This invention exposes the welding area between the electrode post and the connecting piece through this structure, increasing the welding contact area and improving the current flow capacity. At the same time, it keeps the welding area away from the sealing element, reducing the impact of high welding temperature on sealing performance.

[0014] As a further improvement of the present invention, the inner section extends outward toward the side away from the sealing section to form a pole post top platform, so as to form a second step between the two, the step surface of the second step being flush with the upper plastic top edge.

[0015] The second step of this invention provides a positioning reference for the upper plastic, ensuring that the surface of the upper plastic is flat after injection molding, and improving the overall appearance and assembly consistency.

[0016] As a further improvement of the present invention, a positioning post is provided at the center of the end face of the outer section.

[0017] This invention achieves precise positioning before welding by cooperating with the positioning holes on the connecting piece using the positioning pin, eliminating the need for additional fixtures, simplifying the assembly process, and improving welding quality.

[0018] Secondly, the present invention provides an electrode assembly, including the electrode, an insulating component, a sealing component, and an aluminum ring; wherein: The electrode post is placed in the inner cavity of the aluminum ring, and the outer section protrudes from the electrode post mounting hole of the aluminum ring and extends out of the bottom plane of the aluminum ring. The sealing element is sleeved on the outside of the sealing section and clamped between the aluminum ring and the bottom plane of the sealing section to achieve a seal; The insulating element is disposed between the aluminum ring and the pole post.

[0019] This invention forms a multi-layered sealing and insulation structure through the cooperation of aluminum rings, seals and poles, thereby improving the overall sealing performance, insulation and assembly stability of the assembly.

[0020] As a further improvement of the present invention, the insulating component is a plastic component, a ceramic component, or a bakelite component.

[0021] This invention allows for the selection of different insulation materials based on the application scenario, balancing cost and performance requirements and improving design flexibility.

[0022] As a further improvement of the present invention, after riveting, the top of the aluminum ring has several anti-torsion grooves along the circumferential direction, and the insulating part has anti-torsion protrusions at corresponding positions.

[0023] The anti-torsion groove and anti-torsion protrusion of this invention cooperate to effectively prevent relative rotation between the insulating component and the aluminum ring, thereby improving the overall torsional performance of the assembly.

[0024] As a further improvement of the present invention, after riveting, the outer circumferential surface of the aluminum ring has annular ribs.

[0025] The present invention embeds an annular rib into the insulating component, which enhances the bonding strength between the insulating component and the aluminum ring, prevents the insulating component from falling off, and improves the structural reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a three-dimensional structural schematic diagram (a) of the pole assembly of the present invention; Figure 2 This is a three-dimensional structural schematic diagram (II) of the pole assembly of the present invention; Figure 3 This is a front cross-sectional view of the pole assembly of the present invention; Figure 4 This is a top view of the pole assembly of the present invention; Figure 5 This is a three-dimensional structural schematic diagram of the pole of the present invention; Figure 6 This is a front view of the pole of the present invention; Figure 7 yes Figure 6 Cross-sectional view along the CC direction; Figure 8 This is a three-dimensional structural diagram of the aluminum ring in the electrode assembly of the present invention; Figure 9 This is a top view of the aluminum ring in the pole assembly of the present invention; Figure 10 This is a front view of the pole assembly of the present invention before the aluminum ring is riveted; Figure 11 This is a front view of the aluminum ring after riveting in the pole assembly of the present invention; Figure 12 This is a three-dimensional structural diagram (a) of the upper plastic in the pole assembly of the present invention; Figure 13 This is a three-dimensional structural diagram (II) of the upper plastic in the pole assembly of the present invention; Figure 14 This is a top view of the upper plastic component in the pole assembly of the present invention; Figure 15 yes Figure 14 Sectional view along line AA; Figure 16 This is a schematic diagram of one side of the connecting piece in the pole assembly of the present invention; Figure 17 This is a schematic diagram of the other side of the connecting piece in the pole assembly of the present invention; Figure 18 This is a front view comparing the weldable areas of the connecting piece in the pole assembly of this invention with those of the connecting piece in the prior art; Figure 19 This is a bottom view comparing the weldable areas of the connecting piece in the pole assembly of this invention with those of the connecting piece in the prior art.

[0028] In the picture: 100. Apply plastic; 101. Polygonal round hole; 102. Back protrusion; 103. Matching groove; 200, pole; 201. Top platform of the pole column; 202. Inscribed section; 203. Multi-faceted circular disc structure; 204. Sealed section; 205. External segment; 206. Positioning post; 300. Sealing ring; 400, aluminum ring; 401. Anti-torsion groove; 402. Circular rib; 403. Clip-on fixing of steps; 700, Connecting piece; 701. Positioning round hole; 702. Connect the convex hull; 703. Weldable areas; 704. Existing weldable areas. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention. Example 1

[0030] like Figures 1-19 As shown, the present invention provides an electrode post 200, including a cylindrical electrode post 200 body, the electrode post 200 body including an inner section 202, a sealing section 204 and an outer section 205 connected in sequence; wherein: The diameter of the inner section 202 is smaller than the diameter of the sealing section 204, and a recessed area is formed between the two. A polygonal disc structure 203 is provided in the recessed area to enhance the torque between the pole post 200 and the upper plastic 100; The diameter of the outer section 205 is smaller than the diameter of the sealing section 204, so as to form a first step between the two, which is used to seal with the seal.

[0031] The outer segment 205 is a cylindrical structure formed by extending the self-sealing segment 204 outward. In this embodiment, the outer segment 205 is a cylindrical structure. Of course, the outer segment is not limited to a cylindrical shape, but can also be a polygonal column, such as a pentagonal column or a hexagonal column.

[0032] In this embodiment, the sealing element is a sealing ring 300.

[0033] The present invention enhances the torsional resistance between the pole post 200 and the upper plastic 100 by setting a polygonal disc structure 203 in the recessed area, avoids relative rotation during use, and improves the torsional performance of the pole post 200; at the same time, the stability and reliability of the sealing structure are improved by the cooperation of the first step and the sealing element.

[0034] It should be noted that the polygonal disc structure 203 is an irregularly shaped cylindrical structure with multiple angles. Its concave and convex parts fit into the injection-molded upper plastic 100, thereby achieving torsional resistance between the pole post 200 and the upper plastic 100. Of course, the polygonal disc structure 203 can be a triangular concave-convex structure, or it can be a square, pentagonal, or hexagonal concave-convex structure.

[0035] The multi-angled disc structure 203 of the present invention forms an interlocking groove with the upper plastic 100 during injection molding, which further improves the torsional resistance and allows for the selection of different angles according to the processing technology, flexibly adapting to different specification requirements.

[0036] like Figure 7As shown, to prevent sharp corners from causing noise damage to the upper plastic 100, the corners of the polygonal disc structure 203 are rounded. Similarly, the junction between the corners and the polygonal disc structure 203 is also rounded. This rounded transition reduces stress concentration, increases structural strength, and facilitates processing and molding, preventing damage to the upper plastic 100 during assembly.

[0037] This invention improves the torque performance of the pole post 200 and the upper plastic 100 by setting a polygonal disc structure 203 at the waist of the pole post 200; it can also be square / pentagonal / hexagonal, etc. The polygonal disc structure 203 is set in the recessed area between the inner section 202 and the sealing section 204, and the upper plastic 100 is injection molded to fill it, forming a convex-concave fit, thereby improving the torque performance; if there is no such structure, the middle recessed area is set as an ordinary circle, and the upper plastic 100 cannot form a convex-concave fit after injection molding, and it is very easy for them to rotate relative to each other.

[0038] To reduce the impact of high temperatures during welding on sealing performance, in this embodiment, the outer segment 205 is a cylindrical structure with its end protruding from the bottom plane of the aluminum ring 400. By extending the cylindrical structure at the bottom of the pole post 200, the distance between the welding area and the sealing ring 300 is increased, thereby moving the welding area away from the sealing ring 300. This reduces the impact of high temperatures during welding of the connecting piece 700 on the performance of the sealing ring 300, lowers the risk of high-temperature failure of the sealing ring 300, and maintains the original sealing performance, thus solving the problem of decreased sealing performance caused by high temperatures during welding of the connecting piece 700. Furthermore, the end of the external section 205 also protrudes from the lower plastic bottom surface of the terminal post 200 assembly. By extending a cylindrical structure, namely the external section 205, from the bottom of the terminal post 200, the external section 205 protrudes from the lower plastic. The bottom surface of this cylinder is the welding surface with the connecting piece 700. This structure effectively increases the contact area between the terminal post 200 and the connecting piece 700 (the size of the middle hole of the lower plastic clip is fixed, and the external section 205 can obtain a larger contact area by extending directly out), thereby improving the current carrying capacity of the terminal post 200 assembly.

[0039] This invention exposes the welding area between the pole post 200 and the connecting piece 700 through this structure, increasing the welding contact area and improving the flow capacity. At the same time, it keeps the welding area away from the seal, reducing the impact of high welding temperature on the sealing performance.

[0040] In this embodiment, the inner section 202 extends outward toward the side away from the sealing section 204 to form the pole post top platform 201, so as to form a second step between the two, and the step surface of the second step is flush with the top edge of the upper plastic 100.

[0041] The second step of this invention provides a positioning reference for the upper plastic 100, ensuring that the surface of the upper plastic 100 is flat after injection molding, thereby improving the overall appearance and assembly consistency.

[0042] In one optional embodiment of the present invention, a positioning post 206 is provided at the center of the end face of the outer segment 205. Simultaneously, a positioning circular hole 701 is provided at a corresponding position on the connecting piece 700 in the pole post 200 assembly. The positioning circular hole 701 fits into the positioning post 206 at the bottom of the pole post 200, forming a positioning. By adding the positioning circular hole 701 to the connecting piece 700 and the positioning post 206 to the bottom of the pole post 200, the connecting piece 700 does not require a jig during welding, simplifying the assembly process and improving welding quality. Positioning can be achieved through its own structure. Precise positioning before welding is achieved by the cooperation of the positioning post 206 with the positioning hole on the connecting piece 700, solving the positioning problem when welding the connecting piece 700 to the bottom of the pole post 200. It should be noted that the positioning post 206 is not limited to a cylinder; it can also be a polygonal column or a hemispherical protrusion. Example 2

[0043] like Figures 1-19 As shown, the present invention provides an electrode post 200 assembly, including an electrode post 200, an insulating component, a sealing component, and an aluminum ring 400; it should be noted that the insulating component includes an upper plastic 100 and a lower plastic (not shown in the accompanying drawings); wherein: The pole post 200 is an irregularly shaped rotating column. The structure from top to bottom consists of pole post top platform 201, inner connection section 202, polygonal disc structure 203, sealing section 204, outer connection section 205 and positioning post 206. The pole post top platform 201 is a cylindrical protrusion on the top surface of the plastic 100, and the top surface of the pole post top platform 201 has a small R-angle rounded transition structure around the entire circumference.

[0044] The inner section 202 serves to raise, position, and connect the components. Its diameter is larger than that of the top pole platform 201. The upper part of the inner section 202 is concentrically connected to the bottom surface of the pole platform 201 to form a step. The upper surface of the inner section 202 is flush with the surface of the upper plastic 100 after injection molding.

[0045] The polygonal disc structure 203 serves to fit tightly against the inner side of the upper plastic 100 to increase overall torsional strength. The upper part of the polygonal disc structure 203 is concentrically connected to the inner section 202 via a trapezoidal column. The polygonal disc structure 203 can be triangular, square, pentagonal, or hexagonal, with rounded corners, and fits tightly into the polygonal round holes on the inner side of the upper plastic 100 to improve torsional resistance. The sealing section 204 serves to directly contact and compress the sealing ring 300 and for assembly positioning. The sealing section 204 and the sealing ring 300 cooperate to form a compression seal. The diameter of the sealing section 204 is the outer diameter of the pole post 200, but the diameter of the sealing section 204 is smaller than the inner diameter of the L-shaped sealing ring 300, which facilitates assembly. The upper part of the sealing section 204 is concentrically connected to the polygonal disc structure 203 through a trapezoidal column.

[0046] The outer section 205 extends the bottom welding area, increasing the welding area and the distance between the sealing ring 300 and the welding area. This reduces the impact of high welding temperatures on the performance of the sealing ring 300. The upper part of the outer section 205 is concentrically connected to the bottom surface of the sealing section 204. The outer section 205 protrudes from the bottom surface of the aluminum ring 400, increasing the welding area with the connecting piece 700 and isolating the heat-affected zone. It should be noted that the end of the outer section 205 protrudes from the bottom plane of the lower plastic, partially exposed. This invention, through the cooperation of the aluminum ring 400, the sealing element, and the pole post 200, forms a multi-layer sealing and insulation structure, improving the overall sealing performance, insulation, and assembly stability of the assembly. In this embodiment, the outer section 205 is a cylindrical structure. However, the outer post is not limited to a cylindrical shape; it can also be a polygonal column, such as a pentagonal or hexagonal column. The positioning post 206 serves to mate with the positioning hole 701 on the connecting piece 700 to position the connecting piece 700. The diameter of the positioning post 206 is slightly smaller than the diameter of the positioning hole 701 on the connecting piece 700, and its height is slightly lower than the thickness of the connecting piece 700. The top of the positioning post 206 is concentrically connected to the bottom surface of the outer section 205. The positioning post 206 mates with the positioning hole 701 on the connecting piece 700 to achieve precise positioning before welding.

[0047] The electrode post 200 is placed inside the aluminum ring 400, and the outer section 205 protrudes from the mounting hole of the electrode post 200 in the aluminum ring 400, extending beyond the bottom plane of the aluminum ring 400; for example Figure 10 and Figure 11 As shown, the aluminum ring 400 has two states: before riveting and after riveting; as... Figure 10 As shown, before riveting, the aluminum ring 400 is generally L-shaped with a circular through hole on the bottom surface. A circumferential locking step 403 is provided around the through hole to engage with the lower plastic ring to secure it. The outer diameter of the locking step 403 is slightly smaller than the mounting hole of the top cover plate pole 200 assembly, and the inner diameter is slightly larger than the outer diameter of the L-shaped sealing ring 300. Uniformly distributed anti-torsion grooves 401 are provided on its outer circumference to tightly engage with the back protrusion 102 of the upper plastic 100, increasing the overall torque of the pole 200 assembly. In this embodiment, to improve torque performance, after riveting, the top of the aluminum ring 400 has several circular anti-torsion grooves 401 along the circumferential direction, and the corresponding position on the insulating component has an anti-torsion protrusion. The anti-torsion grooves 401 engage with the anti-torsion protrusions to effectively prevent relative rotation between the insulating component and the aluminum ring 400, improving the torque performance between the aluminum ring 400 and the upper plastic 100.

[0048] It should be noted that other shaped grooves are also acceptable and will not affect functionality. However, circular grooves are more convenient for stamping. When the upper plastic 100 is injection molded, the injection molded material enters the anti-torsion groove 401 and forms an integral part with the upper plastic 100. This can effectively prevent the upper plastic 100 from rotating relative to the aluminum ring 400 in the xy axis direction, thereby improving torque performance. Without this circular groove, the upper plastic 100 is very prone to torsion in the xy axis direction relative to the aluminum ring 400.

[0049] To prevent the aluminum ring 400 from detaching from the upper plastic 100, in this embodiment, after riveting, the outer circumferential surface of the aluminum ring 400 has an annular rib 402. By setting the rib on the outside of the aluminum ring 400, the annular rib 402 is embedded in the insulating component, ensuring that the upper plastic 100 can firmly wrap the outside of the aluminum ring 400 without detaching, thereby enhancing the bonding strength between the insulating component and the aluminum ring 400, preventing the insulating component from falling off, and improving the structural reliability.

[0050] It should be further noted that in this embodiment, the annular rib 402 is a whole circle and integrally formed. Of course, it can be set as a segmented rib structure, but the forming process is more complicated and it is not the optimal embodiment.

[0051] The sealing element is fitted onto the outside of the sealing section 204 and clamped between the aluminum ring 400 and the bottom plane of the sealing section 204 to achieve a seal. During assembly, the sealing ring 300 and the pole post 200 are sequentially placed into the inner cavity of the aluminum ring 400, and then the riveting process is completed using a mold. During riveting, the opening of the aluminum ring 400 is flipped inward to form a top undercut plane, which wraps and fixes the sealing ring 300 and the pole post 200 within it. At the same time, the position of the anti-torsion groove 401 changes from the side to the top undercut plane. Simultaneously, excess material flows outward during the riveting and extrusion process, forming an annular rib 402, which serves to form a circumferential concave-convex fit with the inner side of the upper plastic 100, preventing the outer side of the upper plastic 100 from detaching from the aluminum ring 400. Figure 11 As shown, after riveting, the top of the aluminum ring 400 forms an inverted flat surface, which wraps around the sealing ring 300 and the pole post 200, and at the same time forms an annular rib 402, which fits into the groove 103 of the rib on the inner side of the upper plastic 100 to prevent it from falling off; the top of the aluminum ring 400 is also provided with multiple anti-torsion grooves 401, which cooperate with the back boss 102 of the upper plastic 100 to prevent relative rotation.

[0052] An insulating component is disposed between the aluminum ring 400 and the pole post 200. The insulating component can be made of plastic, ceramic, or bakelite, and different insulating materials can be selected according to the application scenario to balance cost and performance requirements and improve design flexibility. In this embodiment, the insulating component includes an upper plastic 100 and a lower plastic (not shown in the attached drawings). The upper plastic 100 is generally annular in shape, with polygonal circular holes 101 on the inner side of the ring. These holes tightly engage with the polygonal circular disc structure 203 of the electrode post 200 to ensure that the upper plastic 100 is stable relative to the electrode post 200 and will not twist. The back of the upper plastic 100 is provided with a back protrusion 102, which tightly engages with the anti-twist groove 401 to ensure that the upper plastic 100 is stable relative to the aluminum ring 400 and will not twist. The inner side of the outer wall of the upper plastic 100 is also provided with a groove 103 that engages with the rib, forming a circumferential fit with the annular rib 402 to prevent the outer side of the upper plastic 100 from separating from the aluminum ring 400, thus ensuring the stability of the relative position between the upper plastic 100, the aluminum ring 400, and the electrode post 200.

[0053] like Figure 16 This is a schematic diagram of the connecting piece 700 in the pole post 200 assembly of the present invention, as shown below. Figure 17 The diagram shows a schematic of the connecting piece 700 in the prior art. The main difference is that in this invention, the connecting piece 700 has a positioning circular hole 701 on its plane, the diameter of which is slightly larger than the positioning post 206 at the bottom of the pole post 200; while in the prior art, the connecting piece 700 has a circular connecting protrusion 702 on its plane, the top surface of which contacts the bottom surface of the pole post 200 of the cover plate to form a welding area.

[0054] like Figure 18 and Figure 19 The diagram shows a comparison of the welding areas of the connecting piece 700 in this invention and the prior art. In this invention, the outer section 205 of the pole post 200 assembly extends from the inner side of the lower plastic annular buckle to the bottom surface of the lower plastic, and then fits with the connecting piece 700, resulting in a larger effective weldable area 703. In the prior art, the pole post 200 does not have an outer section 205 structure at the bottom; instead, the circular connecting protrusion 702 of the connecting piece 700 contacts the diameter of the sealing cylindrical bottom surface of the pole post 200 through the inner side of the lower plastic annular buckle. Because the circular connecting protrusion 702 itself has a certain wall thickness, and the forming of the connecting protrusion 702 involves a certain slope, the weldable area 704 of the prior art is significantly smaller than the welding area of ​​the technical solution of this invention. The area comparison of the two solutions is shown below. Figure 19 As shown.

[0055] Assembly process: First, the pole post 200 and the sealing ring 300 are placed into the inner cavity of the aluminum ring 400 and fixed by riveting with a mold; then the riveted pole post 200 assembly is placed into the injection mold and the upper plastic 100 is injection molded to complete the preparation of the pole post 200 assembly.

[0056] This invention significantly improves the sealing performance, torsional resistance, assembly positioning accuracy, and current carrying capacity of the terminal 200 module by optimizing the mating structure of the terminal 200, aluminum ring 400, and upper plastic 100. It has the advantages of compact structure, simple process, and high reliability, and is suitable for the design of terminal 200 modules for various high-performance batteries.

[0057] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electrode post, characterized in that, The electrode includes a cylindrical electrode body, which comprises an inner section, a sealing section, and an outer section connected in sequence; wherein: The diameter of the inner section is smaller than the diameter of the sealing section, and a recessed area is formed between the two. The recessed area is provided with a polygonal disc structure to enhance the torque between the pole and the upper plastic. The diameter of the outer section is smaller than the diameter of the sealing section, so as to form a first step between the two, which is used to seal with the sealing element.

2. The pole post according to claim 1, characterized in that, The polygonal disc structure is a triangular, quadrangular, pentagonal, or hexagonal concave-convex structure.

3. The pole piece according to claim 1 or 2, characterized in that, The corners of the polygonal disc structure are rounded.

4. The pole post according to claim 1, characterized in that, The end of the outer segment protrudes from the bottom plane of the aluminum ring.

5. The pole post according to claim 1, characterized in that, The inner section extends outward toward the side away from the sealing section to form a pole post top platform, thereby forming a second step between the two, the step surface of the second step being flush with the upper plastic top edge.

6. The pole post according to claim 1, characterized in that, A positioning post is provided at the center of the end face of the outer section.

7. A pole assembly, characterized in that, The pole includes any one of claims 1-6, and further includes an insulating element, a sealing element, and an aluminum ring; wherein: The electrode post is placed in the inner cavity of the aluminum ring, and the outer section protrudes from the electrode post mounting hole of the aluminum ring and extends out of the bottom plane of the aluminum ring. The sealing element is sleeved on the outside of the sealing section and clamped between the aluminum ring and the bottom plane of the sealing section to achieve a seal; The insulating element is disposed between the aluminum ring and the pole post.

8. The pole assembly according to claim 7, characterized in that, The insulating component is made of plastic, ceramic, or bakelite.

9. The pole assembly according to claim 7, characterized in that, After riveting, the top of the aluminum ring has several anti-torsion grooves along the circumferential direction, and the corresponding position on the insulating component has anti-torsion protrusions.

10. The pole assembly according to claim 7, characterized in that, After riveting, the outer circumferential surface of the aluminum ring has annular ribs.

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