Pole assembly and end cover assembly

Abstract

The utility model discloses a pole assembly and an end cover assembly, the pole assembly comprises a pole, a pressing piece and an insulation sealing piece, and the pressing piece sleeves the pole; the insulating sealing element is partially located between the pressing element and the pole, and the pressing element and the pole clamp and fix the insulating sealing element; the first end of the insulation sealing piece is located on the side, away from the pole, of the pressing piece. According to the pole assembly, the problem of insulation failure caused by movement and dislocation of the insulating part of the existing pole assembly is solved, and the insulativity of the pole assembly is improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a pole assembly and an end cap assembly. Background Art

[0002] The battery cover assembly consists of the cover, connector, and terminal assembly. The terminal assembly includes a seal, insulator, structural component, and terminal. The structural component is integrally molded with the aluminum sheet. The seal and insulator are assembled and secured to the terminal via the structural component, achieving insulation and sealing of the terminal. The insulator and seal are located between the terminal and the structural component. During assembly, the insulation can easily shift and misalign, leading to insulation failure. Utility Model Content

[0003] The embodiments of the present application provide a pole assembly and a cover plate assembly to solve the problem of insulation failure caused by the displacement of insulating parts in the existing pole assembly.

[0004] In a first aspect, an embodiment of the present application provides a pole assembly, comprising:

[0005] pole;

[0006] The pressing piece is sleeved on the pole;

[0007] an insulating seal, wherein the insulating seal is partially located between the pressing member and the pole, and the pressing member and the pole clamp and fix the insulating seal;

[0008] Wherein, the first end of the insulating seal is located on a side of the pressing member facing away from the pole.

[0009] Optionally, a first protrusion is provided on a side of the pressing member facing away from the pole, and the first end extends to a side of the first protrusion facing away from the core package.

[0010] Optionally, a plurality of through holes are provided on the pressing member, and the plurality of through holes are arranged at intervals along the circumference of the pressing member, and the insulating sealing member fills the through holes.

[0011] Optionally, the through holes are arranged at equal intervals along the circumference of the pressing member.

[0012] Optionally, the pole and the insulating seal, the insulating seal filling the pit;

[0013] And / or, a side surface of the pressing member in contact with the insulating seal is provided with a plurality of pits, and the insulating seal fills the pits.

[0014] Optionally, the second end of the insulating seal extends to a side of the pressing member close to the core package.

[0015] Optionally, the end surface of the second end is tilted, and the end surface is configured to fit with the cover assembly.

[0016] Optionally, the inclination angle of the end face is a, where 0°<a≤100°.

[0017] Optionally, a buckling portion is provided on a side of the insulating seal close to the core package, and the buckling portion is configured to be buckled and connected with a buckling fitting portion on the cover assembly.

[0018] Optionally, the hardness of the insulating seal is HS, wherein 20HA≤HS≤95HA.

[0019] Optionally, an anti-torsion portion is provided on the pole, and the anti-torsion matching portion is provided on the insulating seal, and the anti-torsion portion is engaged with the anti-torsion matching portion.

[0020] Optionally, the insulating seal is integrally injection molded.

[0021] In a second aspect, an embodiment of the present application further provides an end cap assembly, comprising a cover plate assembly and the above-mentioned pole assembly, wherein the pole assembly is mounted on the cover plate assembly.

[0022] The pole assembly and end cover assembly provided in the embodiments of the present application include a pole, a pressing piece and an insulating seal. The pressing piece is sleeved on the pole, and the sealing insulating piece is partially located between the pressing piece and the pole. The sealing insulating piece is clamped and fixed by the pressing piece and the pole. The first end of the insulating seal extends to the side of the pressing piece away from the pole. The insulating seal increases the creepage distance and improves the insulation effect, overcomes the problem of insulation failure caused by the movement and dislocation of the insulating piece in the existing pole assembly, and improves the insulation performance of the pole assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0024] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0025] Figure 1 A three-dimensional view of the cover assembly provided in an embodiment of the present application.

[0026] Figure 2 A top view of the cover assembly provided in an embodiment of the present application.

[0027] Figure 3 This is an exploded view of the cover assembly provided in an embodiment of the present application.

[0028] Figure 4 for Figure 2 Middle AA section view.

[0029] Figure 5 for Figure 4 A partial enlarged view of the first form at B in the middle.

[0030] Figure 6 for Figure 4 A partial enlarged view of the second form at B in the middle.

[0031] Figure 7 for Figure 4 A partial enlarged view of the third form at B in the middle.

[0032] Figure 8 for Figure 4 A partial enlarged view of the fourth form at B in the middle.

[0033] Figure 9 This is a partial enlarged view of the assembled compression piece, pole and insulating seal.

[0034] Figure 10 A three-dimensional diagram of the first form of the pressing member provided in an embodiment of the present application.

[0035] Figure 11 A stereoscopic view of the second form of the pressing member provided in an embodiment of the present application.

[0036] Figure 12 A three-dimensional diagram of the third form of the pressing member provided in an embodiment of the present application.

[0037] Figure 13 A cross-sectional view of a compression member provided in an embodiment of the present application.

[0038] Figure 14 A cross-sectional view of a compression member provided in an embodiment of the present application having an extension portion.

[0039] Figure 15 A three-dimensional diagram of a first form of a pole provided in an embodiment of the present application.

[0040] Figure 16 A three-dimensional diagram of the second form of the pole provided in an embodiment of the present application.

[0041] Figure 17 This is a cross-sectional view of the third form of the pole provided in an embodiment of the present application.

[0042] Figure 18 This is a cross-sectional view of the fourth form of the pole provided in an embodiment of the present application.

[0043] Figure 19 This is a labeled diagram of the pole provided in an embodiment of the present application.

[0044] 10. End cover assembly;

[0045] 100, pole assembly; 110, pole; 111, first metal layer; 1111, second groove; 112, second metal layer; 1121, third groove; 113, first flange; 114, second flange; 115, joint surface; 1151, first horizontal section; 1152, curved section; 1153, second horizontal section; 116, anti-torsion portion; 117, assembly protrusion;

[0046] 120, pressing member; 121, first groove; 122, first horizontal portion; 123, vertical portion; 124, second horizontal portion; 125, first protrusion; 126, through hole; 127, extension portion;

[0047] 130. Insulating seal; 131. First insulating portion; 1311. First insulator portion; 1312. Second insulator portion; 1323. Third insulator portion; 1324. Fourth insulator portion; 1325. Fifth insulator portion; 132. Sealing portion; 1327. First sealing sub-portion; 1328. Second sealing sub-portion; 1329. Third sealing sub-portion; 133. Second insulating portion; 1331. Sixth insulator portion; 1332. Seventh insulator portion; 134. Section; 135. Snap-fit portion; 136. Snap-fit portion; 140. Recess;

[0048] 200 , cover assembly; 210 , mounting hole; 211 , first mounting sub-hole; 212 , second mounting sub-hole; 220 , second protrusion; 230 , metal part; 240 , plastic part. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0050] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The present invention provides a terminal assembly 100 for use in a battery. The terminal assembly 100 may be a negative electrode assembly. The terminal assembly 100 includes a terminal 110, a pressing member 120, and an insulating seal 130.

[0051] In this embodiment, the terminal 110 is cylindrical in shape, and has a mounting protrusion 117 on its side, projecting away from the axis of the terminal 110. The diameter of the mounting protrusion 117 is larger than the diameters of other locations on the terminal 110. Along the axis of the terminal 110, the mounting protrusion 117 is located in the middle region of the terminal 110. For example, there is a certain distance between the upper surface of the mounting protrusion 117 and the upper surface of the terminal 110, and a certain distance between the lower surface of the mounting protrusion 117 and the lower surface of the terminal 110.

[0052] In this embodiment, see Figure 5 , a first groove 121 is formed on the side of the pressing piece 120 facing the pole 110. The first groove 121 is adapted to the assembly protrusion 117. The pressing piece 120 is sleeved on the pole 110, and the assembly protrusion 117 at least partially extends into the first groove 121. The upper side wall of the first groove 121 on the pressing piece 120 is located above the upper surface of the assembly protrusion 117. The lower side wall of the first groove 121 on the pressing piece 120 is located below the lower surface of the assembly protrusion 117. There is a certain distance between the side of the pressing piece 120 facing the pole 110 and the side surface of the pole 110. The pressing piece 120 is made of metal material and has high structural strength. The metal material can be aluminum material, stainless steel material or a composite material of aluminum material and stainless steel material.

[0053] In this embodiment, see Figure 5 The insulating seal 130 is disposed between the pole 110 and the compression member 120. The compression member 120, pole 110, and insulating seal 130 are assembled and fixed. The insulating seal 130 performs both insulating and sealing functions. The insulating seal 130 has a first end and a second end. The first end is located on the side of the compression member 120 facing away from the pole 110. The insulating seal 130 extends from the side closest to the pole 110 to the side facing away from the pole 110, thereby increasing the creepage distance.

[0054] Exemplarily, the insulating seal 130 includes a first insulating portion 131, a sealing portion 132 and a second insulating portion 133. The first insulating portion 131, the sealing portion 132 and the second insulating portion 133 are arranged in sequence along the axial direction of the pole 110. The sealing portion 132 is located between the first insulating portion 131 and the second insulating portion 133. The sealing portion 132 is in contact with a side of the assembly protrusion 117 close to the electrode assembly and / or a side facing away from the electrode assembly. One side of the insulating seal 130 is in contact with the pole 110, and the other side is in contact with the pressing member 120. The side wall of the first groove 121 on the pressing member 120 and the surface of the pole 110 are provided with an insulating seal 130. The first insulating portion 131 is farther away from the core package than the second insulating portion 133. The end of the first insulating portion 131 facing away from the sealing portion 132 is the first end, and the end of the second insulating portion 133 facing away from the sealing portion 132 is the second end. The first end of the first insulating portion 131 extends to a side surface of the pressing member 120 facing away from the pole 110 .

[0055] In the embodiment of the present application, the insulating seal 130, the pole 110 and the pressing piece 120 are assembled and fixed, and the structural stability is good. Along the radial direction of the pole 110, the sealing portion 132 is located between the pressing piece 120 and the pole 110. The pressing piece 120 and the pole 110 function to fix the pressing piece 120 and limit the radial movement of the pressing piece 120 along the pole 110. Along the axial direction of the pole 110, the sealing portion 132 is located between the first insulating portion 131 and the second insulating portion 133. The first insulating portion 131 and the second insulating portion 133 limit the axial movement of the sealing portion 132 along the pole 110, avoiding the sealing portion 132 from falling off or misaligned, thereby improving the sealing reliability of the insulating seal 130. Moreover, the pole 110 and the pressing piece 120 are insulated by the first insulating portion 131 and the second insulating portion 133, and the insulation effect is good. The first end of the first insulating portion 131 extends to the side of the pressing member 120 facing away from the pole 110 . The first insulating portion 131 has a large creepage distance, which improves insulation and has a good insulation effect, thereby improving the reliability of the pole assembly 100 .

[0056] In some embodiments, see Figure 5The pole 110 includes a first metal layer 111 and a second metal layer 112. The first metal layer 111 has a first metal body and a first flange portion 113 arranged on the side of the first metal body. The first flange portion 113 is integrally formed with the first metal body. The first flange portion 113 is made of the same material as the first metal body. The second metal layer 112 has a second metal body and a second flange portion 114 arranged on the side of the second metal body. The second metal body and the second flange portion 114 are integrally formed. The second metal body and the second flange portion 114 are made of the same material. Both the first metal body and the second metal body are cylindrical structures. The first metal layer 111 and the second metal layer 112 are bonded together, and the first flange portion 113 and the second flange portion 114 are bonded together to form an assembly protrusion 117. The second metal layer 112 is closer to the electrode assembly than the first metal layer 111.

[0057] The first insulating part 131 is adhered to the side of the first metal layer 111, the second insulating part 133 is adhered to the side of the second metal layer 112, and the sealing part 132 is sealed and connected to a side of the first flange part 113 facing away from the electrode assembly and / or a side of the second flange part 114 close to the electrode assembly.

[0058] In the embodiment of the present application, an insulating sealing surface is formed on the upper surface of the first flange portion 113 and / or the lower surface of the second flange portion 114 of the pole 110 by the pressing member 120 and the insulating seal 130. The pressing member 120 and the insulating seal 130 apply opposite forces to the first flange portion 113 and the second flange portion 114 respectively, so that the first flange portion 113 and the second flange portion 114 are pressed and fit together. The fitting force between the first metal layer 111 and the second metal layer 112 is increased. The pressing member 120 limits the upward or downward movement of the pole 110, thereby improving the mechanical properties of the pole 110. Even if the pole 110 moves, the pressing member 120 is always present to press the insulating seal 130, thereby ensuring the sealing effect of the pole 110. The pole assembly 100 has fewer parts, a simple structure, and good sealing and insulation effects.

[0059] In some embodiments, the insulating seal 130 is integrally injection-molded. Exemplarily, the insulating seal 130 includes a first insulating portion 131, a sealing portion 132, and a second insulating portion 133, all integrally formed using a nano-injection molding process. This completely fills the gap between the terminal 110 and the compression member 120, ensuring a tight seal.

[0060] In some embodiments, see Figure 9, a plurality of pits 140 are provided on the side where the pole 110 and the insulating seal 130 are in contact. For example, pits 140 are provided on the side where the first insulating portion 131 and the second insulating portion 133 are in contact with the pole 110. The pits 140 can be formed on the surface of the pole 110 by electrochemical corrosion. The shape of the pits 140 is irregular. The bottom size of the pits 140 is larger than the size of the slot. The insulating seal 130 fills the pits 140. For example, the insulating sealing material is filled between the pressing part 120 and the insulating seal 130 by an injection molding process, and a protrusion that cooperates with the pits 140 is formed on the surface of the insulating seal 130.

[0061] In this embodiment, the recess 140 on the pole 110 cooperates with the insulating seal 130 to form a mating, undercut structure. This eliminates any gap between the sealing surface of the pole 110 and the insulating seal 130, resulting in a compact structure. This improves the seal between the pole 110 and the insulating seal 130, as well as the bonding strength between the insulating seal 130 and the pole 110.

[0062] In some embodiments, see Figure 9 , a plurality of pits 140 are provided on the side where the pressing member 120 and the insulating seal 130 are in contact. For example, pits 140 are provided at the position where the pressing member 120 is in contact with the first insulating portion 131 and the second insulating portion 133. The pits 140 can be formed on the surface of the pressing member 120 by electrochemical corrosion. The bottom size of the pits 140 is larger than the size of the notch. The insulating seal 130 fills the pits 140. For example, the insulating sealing material is filled between the pressing member 120 and the insulating seal 130 by an injection molding process, and a protrusion that matches the pits 140 is formed on the surface of the insulating seal 130.

[0063] In the embodiment of the present application, the pressing member 120 cooperates with the insulating seal 130 to form an interlocking undercut structure, thereby improving the sealing performance between the pressing member 120 and the insulating seal 130 and the bonding force between the insulating seal 130 and the pressing member 120 .

[0064] In some embodiments, see Figure 5The pressing member 120 includes a first horizontal portion 122, a vertical portion 123 and a second horizontal portion 124 connected in sequence. The first horizontal portion 122 and the second horizontal portion 124 are both annular structures. The first horizontal portion 122 and the second horizontal portion 124 have the same size. The vertical portion 123 is a cylindrical structure. The vertical portion 123 is located between the first horizontal portion 122 and the second horizontal portion 124, and the vertical portion 123 connects the first horizontal portion 122 and the second horizontal portion 124 at one end away from the pole 110. The first horizontal portion 122, the vertical portion 123 and the second horizontal portion 124 form a first groove 121. The second horizontal portion 124 is closer to the electrode assembly than the first horizontal portion 122. The first horizontal portion 122 is a certain distance from the upper surface of the first metal body, and the first horizontal portion 122 is located above the first flange portion 113. The second horizontal portion 124 is a certain distance from the lower surface of the second metal body, and the second horizontal portion 124 is located below the second flange portion 114.

[0065] For example, see Figure 3 and Figure 5 The cover plate assembly 200 includes a metal part 230 and a plastic part 240. The metal part 230 is bonded to the side of the plastic part 240 facing away from the electrode assembly. The cover plate assembly 200 is provided with a mounting hole 210. The mounting hole 210 includes a first mounting sub-hole 211 and a second mounting sub-hole 212 that are through and coaxially arranged. The first mounting sub-hole 211 is provided on the metal part 230. The side wall of the first mounting sub-hole 211 is bonded to the side of the vertical portion 123 facing away from the pole 110. The second metal body is partially located in the second mounting sub-hole 212. The upper surface of the plastic part 240 supports the bottom of the pressing member 120.

[0066] In the embodiment of the present application, the pressing member 120 is composed of a first horizontal portion 122, a vertical portion 123, and a second horizontal portion 124. The first horizontal portion 122 is located on one side of the first flange portion 113, and the second horizontal portion 124 is located on one side of the second flange portion 114. A sealing portion is formed on the opposite sides of the first flange portion 113 and the second flange portion 114. The sealing portion is symmetrical, and the force applied to the sealing portion of the terminal is uniform, thereby improving the mechanical properties and sealing performance of the terminal.

[0067] In some embodiments, the first horizontal portion 122, the vertical portion 123, and the second horizontal portion 124 are integrally formed. The pressing member 120 can be integrally formed by stamping, bending, etc. The integral molding of the pressing member 120 simplifies the processing and improves the structural strength.

[0068] In some embodiments, see Figure 6 、 Figure 7 and Figure 8, a first protrusion 125 is provided on the side of the clamping member 120 facing away from the pole 110, and the first end extends to the side of the first protrusion 125 facing away from the core package. Exemplarily, a first protrusion 125 is provided on the side of the vertical portion 123 facing away from the pole 110. The first protrusion 125 is arranged along the circumference of the vertical portion 123. The first end extends to the side of the first protrusion 125 facing away from the core package. The first end abuts against the first protrusion 125. A welding area is provided on the first protrusion 125 except for the area that is in contact with the first end. The first protrusion 125 is welded to the cover plate assembly 200. The installation operation is facilitated by welding the first protrusion 125 to the cover plate assembly 200.

[0069] In some embodiments, the first raised portion 125 is disposed at one end of the vertical portion 123 near the first horizontal portion 122. The side of the first raised portion 125 near the first horizontal portion 122 is flush with the upper surface of the first horizontal portion 122. The side of the first raised portion 125 near the second horizontal portion 124 is a welding area, and the first raised portion 125 is welded to the cover plate assembly 200.

[0070] Exemplarily, a side of the first protrusion 125 close to the second horizontal portion 124 is located above the metal member 230 , and a lower side surface of the first protrusion 125 is in contact with an upper surface of the metal member 230 around the first mounting sub-hole 211 .

[0071] In some embodiments, the first raised portion 125 is disposed at one end of the vertical portion 123 near the second horizontal portion 124. The side surface of the first raised portion 125 near the second horizontal portion 124 is flush with the lower surface of the second horizontal portion 124. The side surface of the first raised portion 125 serves as a welding area, and the first raised portion 125 is welded to the cover plate assembly 200.

[0072] Illustratively, the walls of the first mounting sub-hole 211 are stepped, with the diameter of the first mounting sub-hole 211 at one end closer to the upper surface of the metal component 230 being smaller than that at the other end. The first protrusion 125 is positioned within the first mounting sub-hole 211, with the walls of the first mounting sub-hole 211 in contact with the first protrusion 125. The sidewalls of the first mounting sub-hole 211 of the metal component 230 compress the first protrusion 125, limiting the movement of the compression member 120 and improving its mechanical properties.

[0073] In some embodiments, see Figure 6 、 Figure 7 and Figure 8The first raised portion 125 is located near the middle of the vertical portion 123. The upper surface of the first raised portion 125 is spaced a certain distance from the upper surface of the first horizontal portion 122, and the lower surface of the first raised portion 125 is spaced a certain distance from the lower surface of the second horizontal portion 124. The distance between the upper surface of the first raised portion 125 and the upper surface of the first horizontal portion 122 is greater than the distance between the lower surface of the first raised portion 125 and the lower surface of the second horizontal portion 124. The side surface of the first raised portion 125 serves as a welding area.

[0074] For example, see Figure 6 and Figure 7 The wall of the first mounting sub-hole 211 is stepped, and the first protrusion 125 and the side surface of the compression member 120 below the first protrusion 125 are in contact with the wall of the first mounting sub-hole 211. The side of the first protrusion 125 near the first horizontal portion 122 is flush with the upper surface of the metal member 230. The side wall of the mounting hole 210 on the cover assembly 200, through which the pole assembly 100 is mounted, has a step corresponding to the side wall of the first protrusion 125 and the vertical portion 123 below the first protrusion 125, facilitating the installation of the compression member 120 and limiting its movement.

[0075] In some embodiments, see Figure 10 、 Figure 11 and Figure 12 The pressing member 120 is provided with a plurality of through holes 126 , which are spaced apart along the circumference of the pressing member 120 . The through holes 126 are communicated with the first groove 121 , and the insulating sealing member 130 fills the through holes 126 .

[0076] In the embodiment of the present application, a through hole 126 is provided in the compression member 120, which extends through the inside and outside of the compression member 120. Accordingly, the portion of the insulating seal 130 located within the through hole 126 connects to the insulating seal 130 on the inside and outside of the compression member 120. This improves the connection stability between the insulating seal 130 and the compression member 120, improves the twisting, pushing, and pulling between the insulating seal 130 and the compression member 120, and reduces the probability of the compression member 120 becoming uneven due to material deformation.

[0077] In some embodiments, the through holes 126 are arranged at equal intervals along the circumference of the pressing member 120. For example, four through holes 126 are provided, and the four through holes 126 are respectively arranged at quadrant points of the circle where the pressing member 120 is located.

[0078] In the embodiment of the present application, the through holes 126 are arranged at equal intervals along the circumference of the pressing member 120, and the pressing member 120 is evenly subjected to the force of the insulating seal 130 in the circumferential direction. The insulating seal 130 and the pressing member 120 have strong anti-twisting ability.

[0079] In some embodiments, see Figure 10 A through hole 126 is defined on the vertical portion 123 , and the through hole 126 extends along the radial direction of the pressing member 120 .

[0080] In the embodiment of the present application, the through hole 126 extends along the radial direction of the pressing member 120 , thereby improving the anti-torsion capability of the pressing member 120 and limiting the axial movement of the pressing member 120 .

[0081] In some embodiments, see Figure 11 and Figure 12 A through hole 126 is defined in the first horizontal portion 122, extending axially along the compression member 120. For example, the through hole 126 can be provided on the side of the first horizontal portion 122 facing away from the vertical portion 123. Alternatively, the through hole 126 can be provided at the junction of the first horizontal portion 122 and the vertical portion 123. This improves the torsional resistance of the compression member 120.

[0082] In some embodiments, see Figure 13 Along the axial direction of the pressing member 120, the height of the first horizontal portion 122 is h1, and the height between the opposite sides of the first horizontal portion 122 and the second horizontal portion 124 is H, which satisfies at least one of the following conditions: 0.1 mm ≤ h1 ≤ 2 mm; 2h1 < H ≤ 2h1 + 5. The value of h1 can be 0.1 mm, 0.5 mm, 0.8 mm, 1.3 mm, 1.6 mm, 2 mm, or other unspecified values.

[0083] In the embodiment of the present application, the first horizontal portion 122 of the pressing member 120 is associated with the overall size of the pressing member 120 and is reasonably designed to avoid the pressing member 120 being too large, resulting in a high volume utilization rate of the battery.

[0084] In some embodiments, along the axial direction of the pressing member 120, the height of the first horizontal portion 122 is h1, where 5 MPa / mm≤P / h1≤5000 MPa / mm, and P is the strength of the pressing member 120. The value of P / h1 can be 5 MPa / mm, 150 MPa / mm, 400 MPa / mm, 700 MPa / mm, 1000 MPa / mm, 1400 MPa / mm, 1900 MPa / mm, 2200 MPa / mm, 2700 MPa / mm, 3100 MPa / mm, 3500 MPa / mm, 3900 MPa / mm, 4100 MPa / mm, 4600 MPa / mm, 4800 MPa / mm, 5000 MPa / mm, or other values not specified.

[0085] In the embodiment of the present application, the strength of the pressing member 120 is correlated with the height of the first horizontal portion 122. The material of the pressing member 120 can be selected based on the height of the first horizontal portion 122, or the height of the first horizontal portion 122 can be designed based on the material of the pressing member 120. This ensures that the size and strength of the pressing member 120 meet the design requirements.

[0086] In some embodiments, 2.5 N / mm 3 ≤HB / h1≤4000N / mm 3 HB is the hardness of the pressing member 120. The value of HB / h1 can be 2.5N / mm 3 , 50N / mm 3 , 90N / mm 3 , 140N / mm 3 , 280N / mm 3 、350N / mm 3 , 400N / mm 3 , 560N / mm 3 、690N / mm 3 , 800N / mm 3 , 960N / mm 3 , 1300N / mm 3 , 1800N / mm 3 , 2600N / mm 3 、3200N / mm 3 、3400N / mm 3 、3500N / mm 3 、3900N / mm 3 、3910N / mm 3 , 4000N / mm 3 Or other unspecified values.

[0087] In the embodiment of the present application, the hardness of the pressing member 120 is correlated with the height of the first horizontal portion 122. The material of the pressing member 120 can be selected based on the height of the first horizontal portion 122, or the height of the first horizontal portion 122 can be designed based on the material of the pressing member 120. This ensures that the size and hardness of the pressing member 120 meet the design requirements.

[0088] In some embodiments, see Figure 5 and Figure 14 The pressing member 120 further includes an extension portion 127 , which is disposed at an end of the second horizontal portion 124 away from the vertical portion 123 , and extends toward a side away from the first horizontal portion 122 .

[0089] For example, see Figure 5The cover plate assembly 200 includes a metal part 230 and a plastic part 240, and the metal part 230 is bonded to a side of the plastic part 240 facing away from the electrode assembly. A mounting hole 210 is provided on the cover plate assembly 200, and the mounting hole 210 includes a first mounting sub-hole 211 and a second mounting sub-hole 212 that are through and coaxially arranged. The first mounting sub-hole 211 is provided on the metal part 230, and the side wall of the first mounting sub-hole 211 has a step structure that is adapted to the vertical portion 123 and the second horizontal portion 124 of the clamping member 120. The first horizontal portion 122 is located above the metal part 230. The second mounting sub-hole 212 is provided on the plastic part 240, and the aperture of the first mounting sub-hole 211 is larger than the aperture of the second mounting sub-hole 212. The side wall of the second mounting sub-hole 212 is bonded to part of the side wall of the pole 110. An end of the extending portion 127 facing away from the first horizontal portion 122 abuts against a side surface of the plastic component 240 close to the metal component 230 .

[0090] In this embodiment of the present application, the compression member 120 includes a first horizontal portion 122, a vertical portion 123, a second horizontal portion 124, and an extension portion 127, which are connected in sequence. The extension portion 127 and the second horizontal portion 124 form a support area, which is in close contact with the metal member 230 and is welded to the metal member 230. This facilitates the assembly and fixation of the compression member 120 and the cover assembly 200, improving the laser welding yield.

[0091] In some embodiments, see Figure 14 Along the axial direction of the pressing member 120, the height of the first horizontal portion 122 is h1, the height between the opposite sides of the first horizontal portion 122 and the second horizontal portion 124 is H, and the height of the extension portion 127 is h2, and at least one of the following conditions is satisfied: 0.1mm≤h1≤2mm; 2h1<H≤2h1+5; 0<h2≤5mm. Among them, the value of h1 is 0.1mm, 0.5mm, 0.8mm, 1.3mm, 1.6mm, 2mm or other unlisted values. The value of H2 is 0.1mm, 0.9mm, 1.2mm, 1.8mm, 2.1mm, 3.5mm, 4.1mm, 4.8mm, 5mm or other unlisted values.

[0092] In some embodiments, see Figure 8The first insulating portion 131 includes a first insulator portion 1311, a second insulator portion 1312, and a third insulator portion 1313 connected in sequence. The first insulator portion 1311 and the third insulator portion 1313 are arranged vertically, and the second insulator portion 1312 is arranged horizontally. The first insulator portion 1311 is in contact with the side surface of the first metal layer 111 located above the first flange portion 113 and the end of the first horizontal portion 122. The second insulator portion 1312 is in contact with the inner side surface of the first horizontal portion 122 and the side surface of the first flange portion 113 facing away from the second flange portion 114. The third insulator portion 1313 is in contact with the inner side surface of the vertical portion 123 and the end surface of the first flange portion 113. The sealing portion 132 is in contact with the side surface of the second flange portion 114 facing away from the first flange portion 113 and the inner side surface of the second horizontal portion 124. The second insulating portion 133 is in contact with the end surface of the second flange portion 114 and the side surface of the second metal layer 112 below the second flange portion 114. The first insulating portion 131 and the sealing portion 132 clamp the first and second flange portions 113 and 114, applying opposing forces to the first and second flange portions 113 and 114 to ensure the bonding strength between the first and second metal layers 111 and 112.

[0093] See also Figure 8 The first insulating portion 131 also includes a fourth insulator portion 1314 and a fifth insulator portion 1315. The fourth insulator portion 1314 is aligned with the side of the first horizontal portion 122 facing away from the second horizontal portion 124. The fourth insulator portion 1314 is located between the third insulator portion 1313 and the fifth insulator portion 1315. The fourth insulator portion 1314 connects the third insulator portion 1313 and the fifth insulator portion 1315. The fifth insulator portion 1315 is aligned with the side of the vertical portion 123 facing away from the pole 110. The provision of the fourth insulator portion 1314 and the fifth insulator portion 1315 increases the creepage distance between the pole 110 and the cover plate assembly 200, improving the insulation performance. The first insulator portion 1311, the second insulator portion 1312, the third insulator portion 1313, the fourth insulator portion 1314, and the fifth insulator portion 1315 are integrally formed. The first insulating portion 131 can be formed by injection molding and then assembled with the pole 110 and the pressing piece 120. Alternatively, the first insulating portion 131 can be integrally formed by injection molding after the pressing piece 120 is assembled with the pole 110. The first insulating portion 131 has a simple structure and is easy to process.

[0094] In some embodiments, see Figure 6 and Figure 8 The second end of the insulating seal 130 extends to the side of the pressing member 120 close to the core package.

[0095] Exemplarily, the second insulating portion 133 includes a sixth insulator portion 1331 and a seventh insulator portion 1332, and the sixth insulator portion 1331 and the seventh insulator portion 1332 are connected. The sixth insulator portion 1331 is bonded to the second horizontal portion 124 and the second metal layer 112. The seventh insulator portion 1332 is located on the side of the second horizontal portion 124 facing away from the first horizontal portion 122, and the seventh insulator portion 1332 is bonded to the lower surface of the second horizontal portion 124. The sixth insulator portion 1331 and the seventh insulator portion 1332 are integrally formed. The sixth insulator portion 1331 and the seventh insulator portion 1332 can be formed by injection molding. The second insulating portion 133 increases the creepage distance between the pole 110 and the cover plate assembly 200, thereby improving the insulation effect.

[0096] In some embodiments, see Figure 6 The sealing portion 132 includes a first sealing sub-portion 1327, a second sealing sub-portion 1328, and a third sealing sub-portion 1329 connected in sequence. The first sealing sub-portion 1327 is in contact with the inner side surface of the first horizontal portion 122 and the side surface of the first flange portion 113 facing away from the second flange portion 114. The third sealing sub-portion 1329 is in contact with the side surface of the second flange portion 114 facing away from the first flange portion 113 and the inner side surface of the second horizontal portion 124. The second sealing sub-portion 1328 is in contact with the end surface of the first flange portion 113, the end surface of the second flange portion 114, and the inner side surface of the vertical portion 123. The first insulating portion 131 is located on the side of the first sealing sub-portion 1327 facing away from the second sealing sub-portion 1328. The second insulating portion 133 is located on the side of the third sealing sub-portion 1329 facing away from the second sealing sub-portion 1328. The first sealing sub-section 1327 and the third sealing sub-section 1329 clamp the first flange 113 and the second flange 114, applying opposing forces to the first and second flanges 113 and 114 to ensure the bonding strength between the first and second metal layers 111 and 112. The first sealing sub-section 1327, the second sealing sub-section 1328, and the third sealing sub-section 1329 are integrally formed and can be formed using an injection molding process.

[0097] In some embodiments, see Figure 7The first insulating portion 131 is in contact with the side surface of the first metal layer 111 above the first flange portion 113 and the end of the first horizontal portion 122. The sealing portion 132 is in contact with the inner side surface of the first horizontal portion 122 and the side surface of the first flange portion 113 facing away from the second flange portion 114. The sealing portion 132 is also in contact with the inner side surface of the vertical portion 123 and the end surface of the first flange portion 113. The second insulating portion 133 is in contact with the side surface of the second flange portion 114 facing away from the first flange portion 113 and the inner side surface of the second horizontal portion 124. The second insulating portion 133 is also in contact with the end surface of the second flange portion 114 and the side surface of the second metal layer 112 below the second flange portion 114. The second insulating portion 133 and the sealing portion 132 clamp the first flange portion 113 and the second flange portion 114 , and apply opposite forces to the first flange portion 113 and the second flange portion 114 to ensure the bonding force between the first metal layer 111 and the second metal layer 112 .

[0098] In some embodiments, see Figure 7 The end surface 134 of the second end is tilted, such as the end surface 134 of the second insulating portion 133 facing away from the pole 110, and the end surface 134 is configured to fit the cover assembly 200. Correspondingly, a side wall of the second mounting sub-hole 212 close to the first mounting sub-hole 211 is tilted.

[0099] In the embodiment of the present application, the contact area between the second insulating portion 133 and the plastic component 240 is large, and the second insulating portion 133 and the plastic component 240 are tightly fitted, thereby improving the high-voltage insulation performance.

[0100] In some embodiments, see Figure 7 The inclination angle of end face 134 is a, where 0°<a≤100°. The value of a can be 10°, 18°, 25°, 33°, 39°, 45°, 51°, 60°, 72°, 83°, 91°, 100°, or other unspecified values. The inclination angle of end face 134 is rationally designed to facilitate processing and ensure contact between second insulating portion 133 and plastic component 240.

[0101] In some embodiments, see Figure 8 A buckling portion 135 is provided on a side of the insulating seal 130 close to the core package, and the buckling portion 135 is configured to be buckled and connected with the buckling fitting portion 136 on the cover assembly 200.

[0102] Exemplarily, a snap-fit portion 135 is provided on a side of the second insulating portion 133 facing away from the compression member 120. This snap-fit portion 135 is configured to snap-fit with a snap-fit portion 136 on the cover assembly 200. The snap-fit portion 135 is a first groove and / or protrusion provided on the compression member 120, while the snap-fit portion 133 is a protrusion and / or first groove provided on the plastic member 240. The second insulating portion 133 and the plastic member 240 form a mutually interlocking structure, improving high-voltage insulation performance.

[0103] In some embodiments, the hardness of the insulating seal 130 is HS, where 20HA ≤ HS ≤ 95HA. HS can be 20HA, 31HA, 35HA, 57HA, 64HA, 77HA, 84HA, 90HA, 95HA, or other unspecified values. The hardness of the first insulating portion 131 and the second insulating portion 133 is the same as that of the sealing portion 132. The hardness of the first insulating portion 131 and the second insulating portion 133 is the same and greater than the hardness of the sealing portion 132.

[0104] In the embodiment of the present application, the hardness range of the insulating seal 130 is set to 20HA to 95HA to meet the mechanical performance requirements and sealing insulation of the insulating seal 130.

[0105] In some embodiments, see Figure 5 , an anti-torsion portion 116 is provided on the pole 110, and an anti-torsion matching portion is provided on the insulating seal 130, and the anti-torsion portion 116 is embedded in the anti-torsion matching portion. The anti-torsion portion 116 is a protrusion structure provided on the surface of the pole 110, such as a plurality of protrusion structures, and the plurality of protrusion structures are arranged at intervals along the circumference of the pole 110. Correspondingly, the anti-torsion matching portion is a first groove structure provided on the insulating seal 130, and the plurality of first groove structures are embedded in the protrusion structure. As a variation, the anti-torsion portion 116 is a first groove structure, and the anti-torsion matching portion is a protrusion structure. Alternatively, the anti-torsion portion 116 includes a first groove structure and a protrusion structure, and the anti-torsion matching portion includes a protrusion structure and a first groove structure.

[0106] The anti-torsion portion 116 on the pole 110 and the anti-torsion matching portion on the insulating seal 130 form a chimeric structure to prevent the pole 110 and the insulating seal 130 from rotating relative to each other. The pole 110 has a good anti-torsion effect and improves the mechanical properties of the pole 110.

[0107] In some embodiments, a traceability code is provided on the end surface of the electrode post 110 near the electrode assembly. This code can be a QR code or a barcode. Scanning the code with a barcode scanner provides basic information about the electrode post. This information includes binding information between the electrode post 110 and the cover plate assembly 200, manufacturer information, production batch information, and more. This facilitates traceability of information about the electrode post 110.

[0108] In some embodiments, see Figure 16 and 17 The hardness of the second metal layer 112 is greater than that of the first metal layer 111. For example, the first metal layer 111 is an aluminum metal layer, and the second metal layer 112 is a copper metal layer.

[0109] Exemplarily, the pole 110 is a composite structure in which a copper plate and an aluminum plate are compounded together by special processes such as rolling, sintering, and friction welding before cold heading. That is, before the pole 110 is cold headed, the aluminum metal layer is already compounded on the copper metal layer, and the copper-aluminum composite is an integral structure, in which the copper metal layer and the aluminum metal layer are inseparable. During the cold heading process, the copper-aluminum composite structure is placed in the cold heading equipment, and the cold heading forming process of the pole 110 can be performed. The bonding surface 115 of the first metal layer 111 and the second metal layer 112 is a copper-aluminum bonding surface 115. The copper-aluminum bonding surface 115 of the pole 110 after cold heading is the original bonding surface 115 of the copper-aluminum composite structure, which is the bonding surface 115 that is deformed after cold heading. The manufacturing process is simple, which reduces the process cost and improves the production efficiency of the pole 110.

[0110] In the embodiment of the present application, the hardness of the second metal layer 112 is greater than that of the first metal layer 111. Correspondingly, the hardness of the second flange portion 114 is greater than that of the first flange portion 113. While meeting the strength requirements of the electrode 110, the second metal layer 112 is a copper metal layer, the same material as the current collector inside the battery, which facilitates welding of the electrode 110 to the current collector. The first metal layer 111 is an aluminum metal layer, the same material as the busbar, which facilitates welding of the electrode 110 to the busbar. The welding operation of the electrode 110 is easy.

[0111] In some embodiments, see Figure 19 Along the axis direction of the pole 110 , the cross-sectional area of the first metal layer 111 is S1 , and the cross-sectional area of the second metal layer 112 is S2 , wherein S1 > S2 .

[0112] In the embodiment of the present application, the hardness of the second metal layer 112 is greater than the hardness of the first metal layer 111, and the density of the second metal layer 112 is greater than the density of the first metal layer 111. The cross-sectional area of the second metal layer 112 is set to be smaller than the cross-sectional area of the first metal layer 111, thereby reducing the amount of metal material used in the second metal layer 112, achieving the purpose of lightweight configuration, and also reducing the cost of the pole 110.

[0113] In some embodiments, see Figure 17 and Figure 18The bonding surface 115 between the first metal layer 111 and the second metal layer 112 includes a first horizontal segment 1151, a curved segment 1152, and a second horizontal segment 1153, which are coaxially arranged and sequentially connected. The first horizontal segment 1151 is annular, and the second horizontal segment 1153 is circular. The curved segment 1152 is located between the first horizontal segment 1151 and the second horizontal segment 1153, and the curved segment 1152 smoothly transitions between the first horizontal segment 1151 and the second horizontal segment 1153. The second horizontal segment 1153 is closer to the electrode assembly than the first horizontal segment 1151, and the curved segment 1152 bends away from the second horizontal segment 1153.

[0114] In the embodiment of the present application, the bonding surface 115 between the first metal layer 111 and the second metal layer 112 is a curved surface. The increased area of the bonding surface 115 between the first metal layer 111 and the second metal layer 112 improves the bonding strength between the first metal layer 111 and the second metal layer 112. The increased area of the bonding surface 115 is conducive to reducing the interface resistance of the bonding surface 115. In addition, the pole 110 is formed by stamping, piercing, and extrusion, and the bonding surface 115 is a curved surface, which minimizes damage to the bonding surface 115 during the processing and improves the structural performance of the pole 110.

[0115] In some embodiments, see Figure 17 A second groove 1111 is provided on a side of the first metal layer 111 facing away from the second metal layer 112 , and the second groove 1111 is coaxially arranged with the first metal layer 111 .

[0116] In the embodiment of the present application, by setting a second groove 1111 on the surface of the first metal layer 111, it is beneficial to position and shape the first flange portion 113 on the side of the first metal layer 111, ensuring that the first flange portion 113 is coaxial with the first metal layer 111, thereby improving the sealing effect.

[0117] In some embodiments, see Figure 18 The bottom of the second groove 1111 on the first metal layer 111 is closer to the electrode assembly than the first horizontal section 1151. The second groove 1111 is deeper, which reduces the material of the first metal layer 111 and reduces the cost of the electrode 110.

[0118] In some embodiments, see Figure 19 The bottom of the second groove 1111 is circular, the diameter of the bottom of the second groove 1111 is D1, the opening of the second groove 1111 is circular, the diameter of the opening of the second groove 1111 is D2, wherein D2>D1. The second groove 1111 adopts an expanded structure, which is conducive to the processing and forming of the second groove 1111.

[0119] In some embodiments, see Figure 19The angle β formed between the groove wall and the groove bottom of the second metal second groove 1111 is 90°≤β<180°. For example, β can be 90°, 100°, 112°, 125°, 137°, 148°, 156°, 163°, 179°, or other unspecified values. The sidewalls of the second groove 1111 are cylindrical or conical, which facilitates the processing and shaping of the second groove 1111.

[0120] In some embodiments, see Figure 18 A third groove 1121 is provided on the side of the second metal layer 112 facing away from the first metal layer 111. The third groove 1121 is coaxially arranged with the second metal layer 112. By forming the third groove 1121 on the second metal layer 112, the material of the second metal layer 112 is reduced, thereby reducing the weight of the pole 110 and reducing the cost of the pole 110.

[0121] In some embodiments, see Figure 18 , along the axial direction of the pole 110, the projection of the second groove 1111 falls within the projection of the third groove 1121. The diameter of the notch of the third groove 1121 is larger than the diameter of the groove bottom of the third groove 1121, and the third groove 1121 adopts a flared structure. The diameter of the notch of the second groove 1111 is larger than the diameter of the groove bottom of the second groove 1111, and the second groove 1111 adopts a flared structure. The groove bottom diameter of the third groove 1121 is larger than the notch diameter of the second groove 1111. This is conducive to controlling the flatness and planarity of the annular surface of the first metal layer 111 and reducing the outer collapse angle of the third groove 1121.

[0122] In some embodiments, see Figure 19 The protrusion distance of the first flange portion 113 and / or the second flange portion 114 in a direction perpendicular to the axis of the pole 110 is L1, where 0.5 mm ≤ L1 ≤ 3.5 mm. The value of L1 can be 0.5 mm, 0.9 mm, 1.5 mm, 2.2 mm, 2.9 mm, 3.5 mm, or other unspecified values. The protrusion distance refers to the distance between the side of the first flange portion 113 and / or the second flange portion 114 facing away from the center of the pole 110 and the side of the first flange portion 113 and / or the second flange portion 114 closer to the center of the pole 110 in a direction perpendicular to the axis of the pole 110.

[0123] In the embodiment of the present application, the distance between the side of the first flange portion 113 and / or the second flange portion 114 facing away from the pole 110 and the side of the pole 110 is reasonably designed to ensure that the first flange portion 113 and the second flange portion 114 can extend into the first groove 121, satisfying the assembly relationship between the pole 110, the pressing member 120 and the insulating seal 130.

[0124] In some embodiments, see Figure 19Along the axial direction of the pole 110, the distance between the opposite sides of the first flange portion 113 and the second flange portion 114 is t1, where 0.2 mm < t1 < 5 mm. The distance between the opposite sides of the first flange portion 113 and the second flange portion 114 is the distance between the side of the first flange portion 113 facing away from the second flange portion 114 and the side of the second flange portion 114 facing away from the first flange portion 113. The value of t1 can be 0.3 mm, 0.8 mm, 1.5 mm, 2.2 mm, 3.8 mm, 4.7 mm, or other unspecified values.

[0125] In some embodiments, see Figure 19 , the distance between the opposite sides of the first flange portion 113 and the second flange portion 114 is t1, and the thickness of the second flange portion 114 is t2, wherein 0.01*t1<t2<0.9*t1. The thickness of the second flange portion 114 refers to the distance between the side of the second flange portion 114 away from the first flange portion 113 and the side close to the first flange portion 113 along the axis of the pole 110. The value of T2 can be 0.06*t1, 0.11*t1, 0.17*t1, 0.24*t1, 0.29*t1, 0.36*t1, 0.44*t1, 0.53*t1, 0.65*t1, 0.72*t1, 0.86*t1 or other unlisted values. While meeting the structural strength of the second flange portion 114, the thickness design space of the second flange portion 114 is relatively large.

[0126] In some embodiments, see Figure 19 The distance between the joint surface 115 of the first flange portion 113 and the second flange portion 114 and the end of the pole 110 away from the electrode assembly is t3, wherein 0.3mm≤t3≤5mm. The value of t3 can be 0.3mm, 1.0mm, 2.1mm, 3.3mm, 4.5mm, 5mm or other unspecified values. The distance between the joint surface 115 of the first flange portion 113 and the second flange portion 114 and the end of the pole 110 away from the electrode assembly can be set according to the size of the battery, so as to reduce the height of the pole 110 as much as possible, reduce the size proportion of the pole 110 in the height direction of the battery, increase the internal space of the battery, and improve the battery capacity design.

[0127] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4The present application also provides an end cap assembly 10, comprising any of the above-described pole assembly 100 and a cover plate assembly 200. The pole assembly 100 is mounted on the cover plate assembly 200. For example, the cover plate assembly 200 is provided with a mounting hole 210, and the pole assembly 100 is fixed within the mounting hole 210. The end cap assembly 10 in the present application has the same technical effects as the pole assembly 100 in the above-described embodiments, and will not be further described in detail in the present application.

[0128] In some embodiments, see Figure 2 and Figure 3 The pressing member 120 is welded and fixed to the side wall of the mounting hole 210 on the cover assembly 200 .

[0129] In the embodiment of the present application, the compression member 120 is welded to the cover plate assembly 200. The assembled compression member 120 and the cover plate assembly 200 provide excellent stability and structural strength. The compression member 120 limits the upper surface of the first flange portion 113 and the lower surface of the second flange portion 114 of the pole 110, resulting in a low sealing compression force and improved mechanical properties of the assembled pole assembly 100 and the cover plate assembly 200.

[0130] In some embodiments, see Figure 5 A second protrusion 220 is provided on the side of the cover plate assembly 200 facing away from the electrode assembly. The second protrusion 220 is located around the mounting hole 210. Along the axial direction of the electrode column 110, the surface of the second protrusion 220 is higher than the side of the second flange portion 114 close to the electrode assembly. The first end of the insulating seal 130 extends between the second protrusion 220 and the pressing member 120. For example, the first insulating portion 131 extends between the second protrusion 220 and the pressing member 120, and the first insulating portion 131 is in contact with the hole wall of the mounting hole 210 and the side wall of the pressing member 120.

[0131] In the embodiment of the present application, by providing the second protrusion 220, the depth of the mounting hole 210 is increased, thereby increasing the depth of the pressing member 120 in the mounting hole 210, so that the battery's electrode liquid can extend into the interior of the electrode, thereby improving the corrosion resistance of the battery.

[0132] In some embodiments, see Figure 3 and Figure 5 The cover plate assembly 200 includes a metal component 230 and a plastic component 240. The metal component 230 is located on the side of the plastic component 240 facing away from the electrode assembly and is connected to the plastic component 240. The metal component 230 is a plain aluminum sheet, and the plastic component 240 is a plastic plate. Taking a prismatic battery as an example, both the metal component 230 and the plastic component 240 are rectangular plate structures. The plastic component 240 is used to isolate the metal component 230 from the electrode assembly, improving battery safety.

[0133] An embodiment of the present application further provides a battery, comprising the end cap assembly 10 of the above embodiment.

[0134] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0135] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0136] The above is a detailed introduction to the pole assembly and end cover assembly provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pole assembly (100), characterized in that: include: Pole (110); A pressing member (120), wherein the pressing member (120) is sleeved on the pole (110); an insulating seal (130), wherein the insulating seal (130) is partially located between the pressing member (120) and the pole (110), and the pressing member (120) and the pole (110) clamp and fix the insulating seal (130); Wherein, the first end of the insulating seal (130) is located on a side of the pressing member (120) facing away from the pole (110).

2. The pole assembly (100) according to claim 1, characterized in that A first protrusion (125) is provided on a side of the pressing member (120) facing away from the pole (110), and the first end extends to a side of the first protrusion (125) facing away from the core package.

3. The pole assembly (100) according to claim 1, characterized in that The pressing member (120) is provided with a plurality of through holes (126), the plurality of through holes (126) are arranged at intervals along the circumference of the pressing member (120), and the insulating sealing member (130) fills the through holes (126).

4. The pole assembly (100) according to claim 3, characterized in that The through holes (126) are arranged at equal intervals along the circumference of the pressing member (120).

5. The pole assembly (100) according to claim 1, characterized in that A plurality of recesses (140) are provided on a side of the pole (110) that is in contact with the insulating seal (130), and the insulating seal (130) fills the recesses (140); And / or, a side surface of the pressing member (120) that is in contact with the insulating seal (130) is provided with a plurality of recesses (140), and the insulating seal (130) fills the recesses (140).

6. The pole assembly (100) according to claim 1, characterized in that The second end of the insulating seal (130) extends to a side of the pressing member (120) close to the core package.

7. The pole assembly (100) according to claim 6, characterized in that The end surface (134) of the second end is tilted, and the end surface (134) is configured to fit with the cover plate assembly (200).

8. The pole assembly (100) according to claim 7, characterized in that The inclination angle of the end surface (134) is a, wherein 0°<a≤100°.

9. The pole assembly (100) according to claim 1, characterized in that A buckling portion (135) is provided on a side of the insulating seal (130) close to the core package, and the buckling portion (135) is configured to be buckled and connected with a buckling fitting portion (136) on the cover plate assembly (200).

10. The pole assembly (100) according to any one of claims 1 to 9, characterized in that: The hardness of the insulating seal (130) is HS, wherein 20HA≤HS≤95HA.

11. The pole assembly (100) according to any one of claims 1 to 9, characterized in that: The pole (110) is provided with an anti-torsion portion (116), the insulating seal (130) is provided with an anti-torsion matching portion, and the anti-torsion portion (116) is engaged with the anti-torsion matching portion.

12. The pole assembly (100) according to any one of claims 1 to 9, characterized in that: The insulating seal (130) is integrally injection-molded.

13. An end cap assembly (10), characterized in that: include: A cover plate assembly (200) and a pole assembly (100) according to any one of claims 1 to 12, wherein the pole assembly (100) is mounted on the cover plate assembly (200).

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