METHOD FOR MANUFACTURING A PIPE TYPE BUSBAR AND A PIPE TYPE BUSBAR

Abstract

A method for manufacturing a pipe type busbar includes: preparing a first tubular member made of a first material having a hollow formed therein; preparing a second tubular member having a hollow formed therein and made of a second material different from the first material; plating the first tubular member with a third material; and bonding one surface of the first tubular member and one surface of the second tubular member. The pipe type busbar manufactured thereby has the features capable of reducing a weight and a cost by a heterogeneous material, a pipe shape, and exposing a part of a copper material.

Claims

1. A method for manufacturing a pipe type busbar, the method comprising: preparing a first tubular member made of a first material having a hollow formed therein; preparing a second tubular member having a hollow formed therein and made of a second material different from the first material; plating the first tubular member with a third material; and bonding one surface of the first tubular member and one surface of the second tubular member to one another.

2. The method of claim 1, wherein the bonding of one surface of the first tubular member and one surface of the second tubular member is by rotary friction welding (RFW).

3. The method of claim 2, wherein the first material is copper (Cu), the second material is aluminum (Al), and the third material is silver (Ag).

4. The method of claim 2, wherein the preparing of the first tubular member comprises cutting and machining the first tubular member, and wherein the preparing of the second tubular member comprises cutting the second tubular member.

5. The method of claim 4, wherein the cutting and machining of the first tubular member machines the first tubular member to form a stepped part so that a diameter of the other surface of the first tubular member is smaller than a diameter of one surface thereof.

6. The method of claim 5, wherein the diameter of one surface of the first tubular member and a diameter of one surface of the second tubular member are the same.

7. The method of claim 5, further comprising machining a welding part formed between the one surface of the first tubular member and the one surface of the second tubular member by the rotary friction welding.

8. The method of claim 7, further comprising machining an outer surface of an area having a larger diameter than the stepped part of the first tubular member.

9. The method of claim 8, wherein the third material is removed and, therefore, the first material of the first tubular member is exposed by the machining of the outer surface of the area having the larger diameter than the stepped part of the first tubular member.

10. The method of claim 9, further comprising degreasing the pipe type busbar completely machined.

11. The method of claim 9, wherein the first material is copper (Cu), the second material is aluminum (Al), and the third material is silver (Ag).

12. A pipe type busbar comprising: a first tubular member having one end made of a first material and having a hollow formed therein; and a second tubular member made of a second material different from the first material and having a hollow formed therein, wherein the one end of the first tubular member and the one end of the second tubular member are bonded by a rotary friction welding (RFW).

13. The pipe type busbar of claim 12, wherein another end of the first tubular member is formed as a stepped part having a smaller diameter than that of one end thereof, and wherein the stepped part is formed by plating a third material different from the first material on the first material.

14. The pipe type busbar of claim 13, wherein the first material is copper (Cu), the second material is aluminum (Al), and the third material is silver (Ag).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 shows a conventional rod-shaped busbar.

[0027] FIGS. 2-8 sequentially show a process of manufacturing a pipe type busbar according to the present disclosure.

DESCRIPTION OF SPECIFIC EMBODIMENTS

[0028] To fully understand the present disclosure, the operational advantages of the present disclosure, and the objects achieved by practicing the present disclosure, reference should be made to the accompanying drawings showing embodiments of the present disclosure and the contents described in the accompanying drawings.

[0029] In describing embodiments of the present disclosure, well-known technologies or repetitive descriptions that can unnecessarily obscure the gist of the present disclosure have been reduced or omitted.

[0030] FIGS. 2-8 sequentially show a process of manufacturing a pipe type busbar according to the present disclosure.

[0031] Hereinafter, a method for manufacturing a pipe type busbar, and the pipe type busbar, according to an embodiment of the present disclosure is described with reference to FIGS. 2-8.

[0032] The present disclosure is intended to reduce a weight and a cost of a busbar through a heterogeneous material other than a single copper material, and to also reduce the weight and the cost by manufacturing a pipe type busbar, unlike the conventional rod type busbar.

[0033] First, as shown in FIG. 2, a first tubular member 110 and a second tubular member 120 are prepared.

[0034] In other words, the first tubular member 110 and the second tubular member 120 are prepared and are or have a hollow, respectively. A first material of the first tubular member, according to the embodiment of the present disclosure, is a copper (Cu) material, and the first tubular member 110 is provided as a copper pipe. A second material of the second tubular member is an aluminum (Al) material, and the second tubular member 120 is provided as an aluminum pipe.

[0035] As shown in FIG. 3, the second tubular member 120 is cut to fit the specification, i.e., size, of the busbar in order to prepare the cut second pipe type material 121. It can be seen that a first hollow O1 is formed.

[0036] In addition, as shown in FIG. 4, the first tubular member 110 is cut to fit the specification, i.e., size, of the busbar to prepare the machined first pipe type material 111. It can be seen that the first tubular member 110, machined as shown in FIG. 5, also has a hollow O2 formed therein.

[0037] As shown, the machined first pipe type material 111, made of the copper material, is machined to be formed with a stepped part 111-1. The machined first pipe type material 111 has a diameter of one end corresponding to a diameter of the cut second pipe type material 121 and a diameter of the other end smaller than that of the one end.

[0038] Then, a surface of the machined first pipe type material 111 is plated with a third material. The third material of the plated first pipe type material 112 may be silver (Ag).

[0039] One end of the thus prepared plated first pipe type material 112 and one end of the cut second pipe type material 121 are bonded to one another.

[0040] According to the present disclosure, the bonding between heterogeneous materials is performed by rotary friction welding (RFW).

[0041] The rotary friction welding is a welding method of a solid-state pressure welding manner, which fixes one of the first tubular member and the second tubular member. The method rubs both ends while rotating the other tubular member at high speed and bonds them by applying momentary mechanical pressure when the friction surfaces reach a temperature sufficient for bonding due to friction heat.

[0042] Therefore, the bonded busbar 101 is manufactured as shown in FIG. 6. Further, as shown in FIG. 6, a welded portion is formed to be larger than the diameters of the first tubular member 110 and the second tubular member 120.

[0043] Next, a primarily machined busbar 102 is manufactured by machining the welded portion to have the same diameter as the diameters of the first tubular member 110 and the second tubular member 120.

[0044] Through this machining, the third material, by plating, is removed, and as shown, a part 100-1 of a first material is exposed.

[0045] As described above, after the primary machining, as shown in FIG. 8, a secondary machining is performed in the form of the final pipe type busbar 100.

[0046] The secondary machining machines the bonded area of the plated first pipe type material 112 so that the third material, by plating, is removed and a shape required for the pipe type busbar is machined.

[0047] A groove for insertion into the component to be connected is machined in this machined part.

[0048] The busbar 100, completely machined, is degreased to complete manufacturing. The completed busbar 100 may be classified into the first material part 100-1, a second material part 100-2, and a third material part 100-3.

[0049] The first material part 100-1 is a machined part made of a copper material i.e., the first material, which is a part inserted into the component to be connected and corresponds to a contact part to require stability.

[0050] Therefore, the present disclosure can secure more electrical stability by exposing the copper material to the contact part.

[0051] In addition, the second material, part 100-2, can be made of an aluminum material, i.e., the second material, which contributes to reducing the weight. The third material, part 100-3, can be separately made of a silver material, i.e., the third material, thereby implementing the stable connection and being protected from physical damage such as abrasion.

[0052] In addition, it is possible to form a hollow (O) penetrating the busbar 100 in the longitudinal direction, thereby reducing the weight and the cost.

[0053] As described above, the present disclosure has been described with reference to the illustrative drawings but is not limited to the described embodiments. It should be apparent to those having ordinary skill in the art that various modifications and changes can be made without departing from the spirit and scope of the present disclosure. Therefore, these modifications or changes should be said to belong to the claims of the present disclosure, and the scope of the present disclosure should be interpreted based on the appended claims.