Copper piece unit for combination to form pole post

Abstract

The utility model discloses a copper spare unit for combination formation pole, including the main part of copper quality material, the main part is provided with first connecting portion, the upside of first connecting portion is provided with the plane of sticking together and a plurality of positioning plug -in post that protrude to the plane of sticking together. Adopt above -mentioned scheme, provide a kind of for combination formation pole copper spare unit of horizontal positioning, the plane of sticking together and the vertical positioning of the aluminum spare unit of the resistance of aluminum spare unit of positioning plug -in post insertion, which is inserted.

Description

Technical Field

[0001] This utility model belongs to the field of batteries for new energy vehicles, and specifically relates to a copper component unit used to assemble and form an electrode post. Background Technology

[0002] The negative electrode post of lithium batteries often uses copper-aluminum composite materials or copper-aluminum friction welding process to ensure the welding performance of the negative electrode post. To ensure the bonding strength between copper and aluminum, the industry currently uses the traditional friction welding method for copper and aluminum. Specifically, the copper and aluminum materials, which are pressed against each other, rotate at high speed and melt at the friction surface. Under pressure, they are tightly bonded together, and the melted part solidifies after cooling, thus connecting the copper and aluminum materials.

[0003] The problem with the above welding method is that there is no positioning structure between the copper and aluminum materials, resulting in poor assembly accuracy. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a copper component unit for assembling into an pole post, which is horizontally positioned by inserting an aluminum component unit with a positioning post and vertically positioned by abutting the aluminum component unit with a plane.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a main body made of copper, the main body having a first connecting part, the upper side of the first connecting part having a mating plane and a plurality of positioning pins protruding from the mating plane.

[0006] The present invention is further configured such that: a processing surface is provided on the lower side of the first connecting part, and a stamping hole is provided on the processing surface, wherein the stamping hole and the positioning pin are correspondingly arranged.

[0007] The present invention is further configured such that: the thickness of the first connecting part is h1, the depth of the punching hole is h2, and h2≤0.6*h1.

[0008] The present invention is further configured such that: the first connecting part is in the shape of a disc, and the number of positioning pins is 4-8, with each positioning pin arranged at equal intervals along the circumference of the first connecting part.

[0009] The present invention is further configured such that: the positioning post is cylindrical, and the top of the positioning post is chamfered.

[0010] The present invention is further configured such that: the first connecting part is provided with an upwardly protruding rivet ring on the outer periphery of the mating plane.

[0011] The present invention is further configured such that: the height of the positioning pin is h3, and the height of the riveting ring is h4, where h3 > h4.

[0012] The present invention is further configured such that a second connecting part is provided on the main body.

[0013] The present invention is further configured such that: the second connecting part is integrally formed on the outer periphery of the main body, a first surface is provided on the upper side of the second connecting part, a second surface is provided on the upper side of the main body, the first surface is lower than the second surface, and the height difference between the first surface and the second surface is d, where d≥0.2mm.

[0014] The present invention is further configured such that: the main body is provided with an upwardly protruding extension ring, the lower end of the extension ring is provided with an operation opening penetrating the main body, and the first connecting part is located at the upper end of the extension ring to close the upper end of the extension ring.

[0015] By adopting the above technical solution, with the cooperation of positioning pins and through holes, the aluminum and copper parts are positioned in the horizontal direction, while with the support of the mating plane, the aluminum and copper parts are positioned in the vertical direction, that is, the aluminum and copper parts have higher fitting accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the aluminum component assembly unit according to Embodiment 1 of this utility model;

[0019] Figure 3 This is a cross-sectional view of the aluminum assembly unit according to Embodiment 1 of this utility model;

[0020] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0021] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention;

[0022] Figure 6 This is a schematic diagram of the aluminum component assembly unit in Embodiment 2 of this utility model;

[0023] Figure 7 This is a cross-sectional view of the aluminum assembly unit in Embodiment 2 of this utility model;

[0024] Figure 8 for Figure 7 Enlarged view of B in the middle;

[0025] Figure 9 for Figure 7 A magnified view of C.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Main components;

[0028] 11. Second surface;

[0029] 2. First connecting part;

[0030] 21. Fitting plane; 22. Positioning pin; 23. Machined surface; 24. Punching hole; 25. Riveting ring;

[0031] 3. Extension ring;

[0032] 31. Operating opening;

[0033] 4. Second connecting part;

[0034] 41. First surface;

[0035] 5. Aluminum component unit. Detailed Implementation

[0036] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model, and the specific and direct descriptions of related structures are merely for the convenience of understanding the present utility model; the specific features do not necessarily or directly limit the scope of implementation of the present utility model. Conventional choices and substitutions made by those skilled in the art under the guidance of the present utility model should all be considered within the scope of protection claimed by this utility model.

[0037] Example 1:

[0038] like Figures 1-4 As shown, this utility model discloses a copper component unit for assembling to form an pole post, including a main body 1 made of copper material, a first connecting part 2 provided on the top of the main body 1, a fitting plane 21 and a plurality of positioning pins 22 protruding from the fitting plane 21 on the upper side of the first connecting part 2.

[0039] Specifically, by placing the aluminum component unit 5 to be assembled flat on the mating plane 21, and setting through holes on the aluminum component unit 5 corresponding to the positioning pin 22, so that the positioning pin 22 passes through the through holes on the aluminum component unit 5 facing upward, and then using a riveting method to fix the aluminum component unit 5 to the first connecting part 2 to form a copper-aluminum composite pole.

[0040] Therefore, with the cooperation of the positioning pin 22 and the through hole, the aluminum part unit 5 and the copper part unit are positioned in the horizontal direction, while with the support of the mating plane 21 on the aluminum part unit 5, the aluminum part unit 5 and the copper part unit are positioned in the vertical direction, that is, the mating accuracy of the aluminum part unit 5 and the copper part unit is higher.

[0041] To improve the connection strength and current carrying capacity of the copper component unit and the aluminum component unit 5, ultrasonic welding will be performed to weld at the mating plane 21. Alternatively, the connection between the copper component unit and the aluminum component unit 5 can be achieved by laser welding on the outer periphery of the mating plane 21.

[0042] The copper components are made by stamping, which reduces costs.

[0043] Specifically, a machining surface 23 is provided on the lower side of the first connecting part 2, and a punching hole 24 is provided on the machining surface 23. The punching hole 24 and the positioning pin 22 are correspondingly arranged. Therefore, the punch of the stamping device is on the machining surface 23 side and the die is on the mating plane 21 side, so that the punch and die punch and perform a convex-concave fit, so that the punch punches into the first connecting part 2 to form the punching hole 24, and correspondingly, part of the first connecting part 2 is punched out to form the positioning pin 22.

[0044] Preferably, the thickness of the first connecting part 2 is h1, and the depth of the punching hole 24 is h2, h2≤0.6*h1, so that the punching forms a suitable depth of punching hole 24 to ensure the connection strength of the positioning insert 22.

[0045] Specifically, the first connecting part 2 is arranged in a disc shape, and the number of positioning pins 22 is 4-8. In this embodiment, 4 pins are used. Each positioning pin 22 is arranged at equal intervals along the circumference of the first connecting part 2. In addition, the positioning pins 22 are cylindrical, and the top of the positioning pins 22 is chamfered.

[0046] Therefore, the disc-shaped first connecting part 2, the circumferentially equally spaced positioning pins 22, the cylindrical positioning pins 22, and the chamfer on the top of the positioning pins 22 can achieve smooth cooperation between the aluminum part unit 5 and the copper part unit.

[0047] In addition, the main body 1 is provided with an upwardly protruding extension ring 3, and the lower end of the extension ring 3 is provided with an operation opening 31 that penetrates the main body 1. The first connecting part 2 is located at the upper end of the extension ring 3 to close the upper end of the extension ring 3.

[0048] Therefore, when assembling the copper component unit onto the battery top cover, the main body 1 is positioned by abutting against the bottom of the battery top cover, while the extension ring 3 extends upward through the battery top cover to allow the aluminum component unit 5 to extend outward. In addition, the first connecting part 2 is provided at the top of the extension ring 3 to close the top of the extension ring 3 to ensure sealing, so that the assembled battery top cover is absolutely sealed at the top of the extension ring 3 to prevent leakage. The operating opening 31 allows the ultrasonic welding head to be inserted and fitted to the processing surface 23 for ultrasonic welding.

[0049] Example 2:

[0050] like Figures 5-9 As shown, this utility model discloses a copper component unit for assembling to form an pole post. Its main structure is the same as that of Embodiment 1. The difference is that the first connecting part 2 is provided with an upwardly protruding riveting ring 25 on the outer periphery of the mating plane 21.

[0051] Therefore, the positioning pin 22 only inserts the aluminum part unit 5 upwards. After the aluminum part unit 5 and the copper part unit are fixedly connected, the rivet ring 25 is riveted and the rivet ring 25 changes shape to cooperate with the battery top cover or other peripheral parts to fix the copper part unit on the battery top cover to complete the installation.

[0052] Preferably, in this embodiment, the height of the positioning pin 22 is h3, and the height of the riveting ring 25 is h4, where h3 > h4.

[0053] In addition, the main body 1 in this embodiment has a second connecting part 4 integrally formed on both opposite sides, so that the electrode tab can be directly welded to the second connecting part 4 under the action of the second connecting part 4. The traditional method is to first weld the connecting piece at the bottom of the assembled pole post, and then weld the electrode tab to the connecting piece. Compared with the transmission method, the setting of the second connecting part 4 integrally formed directly results in fewer parts and more convenient processing.

[0054] Preferably, in this embodiment, the upper side of the second connecting part 4 is provided with a first surface 41, the upper side of the main body 1 is provided with a second surface 11, the first surface 41 is lower than the second surface 11, and the height difference between the first surface 41 and the second surface 11 is d, where d≥0.2mm.

[0055] Therefore, since the first surface 41 is lower than the second surface 11, the main body 1 abuts against the bottom of the battery top cover through the second surface 11, thereby creating a certain clearance space between the second connector and the battery top cover, preventing the battery top cover plastic from melting due to high temperature generated during welding of the tabs.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A copper component unit for assembling to form an electrode post, characterized in that: It includes a main body (1) made of copper, the main body (1) being provided with a first connecting part (2), the upper side of the first connecting part (2) being provided with a mating plane (21) and a plurality of positioning pins (22) protruding from the mating plane (21).

2. The copper component unit for assembling and forming an electrode post according to claim 1, characterized in that: The first connecting part (2) has a machining surface (23) on its lower side, and a punching hole (24) is provided on the machining surface (23). The punching hole (24) and the positioning pin (22) are arranged in a corresponding manner.

3. The copper component unit for assembling an electrode post according to claim 2, characterized in that: The thickness of the first connecting part (2) is h1, and the depth of the stamping hole (24) is h2, where h2≤0.6*h1.

4. The copper component unit for assembling an electrode post according to claim 1, characterized in that: The first connecting part (2) is arranged in a disc shape, and the number of positioning pins (22) is 4-8, with each positioning pin (22) arranged at equal intervals along the circumference of the first connecting part (2).

5. The copper component unit for assembling a pole post according to claim 1, characterized in that: The positioning pin (22) is cylindrical, and the top of the positioning pin (22) is chamfered.

6. The copper component unit for assembling an electrode post according to claim 1, characterized in that: The first connecting part (2) is provided with an upward protruding rivet ring (25) on the outer periphery of the mating plane (21).

7. The copper component unit for assembling an electrode post according to claim 6, characterized in that: The height of the positioning pin (22) is h3, and the height of the riveting ring (25) is h4, where h3 > h4.

8. The copper component unit for assembling an electrode post according to claim 1, characterized in that: The main body (1) is provided with a second connecting part (4).

9. The copper component unit for assembling an electrode post according to claim 8, characterized in that: The second connecting part (4) is integrally formed on the outer periphery of the main body (1). The second connecting part (4) has a first surface (41) on its upper side, and the main body (1) has a second surface (11) on its upper side. The first surface (41) is lower than the second surface (11), and the height difference between the first surface (41) and the second surface (11) is d, where d ≥ 0.2 mm.

10. The copper component unit for assembling an electrode post according to claim 1, characterized in that: The main body (1) is provided with an upwardly protruding extension ring (3), and the lower end of the extension ring (3) is provided with an operation opening (31) that penetrates the main body (1). The first connecting part (2) is located at the upper end of the extension ring (3) to close the upper end of the extension ring (3).

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