Electrical connection assembly and charging seat

Abstract

To effectively avoid the problem of electrochemical corrosion, prolong the service life of the product, and improves the electrical connection performance of the product.SOLUTION: An electrical connection assembly includes a power transmission component (1) including an aluminum bar (10) having a first connection end (11) and a terminal (2) having a second connection end (21). The first connection end of the aluminum bar and the second connection end (21) of the terminal are directly welded to each other to electrically connect the aluminum bar and the terminal. In some embodiments, the first connection end of the aluminum bar and the second connection end of the terminal are also fixed to each other through a connection piece or riveted to each other through a riveting structure, so as to improve the reliability of the electrical connection between the aluminum bar and the terminal.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202323147989.2, filed on November 21, 2023, with the China National Intellectual Property Administration, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to an electrical connection assembly and a charging pedestal including the electrical connection assembly.

Background Art

[0003] In the prior art, a charging pedestal in a new energy vehicle usually includes a terminal and a wire electrically connected to the terminal. Currently, the charging current requirement for the entire vehicle has increased to 600 A and will further increase to 1000 A in the future. Currently, conventional wires cannot meet the energization requirements of the entire vehicle. In order to improve the current - carrying capacity of the wire, an aluminum bar is usually used in the prior art instead of the conventional wire. One end of the aluminum bar is fixed to the terminal by a bolt. However, in the prior art, the terminal is usually a copper terminal, so electrochemical corrosion may occur at the electrical contact surface between the aluminum bar and the copper terminal, thereby reducing the product's service life and electrical connection performance.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention is made to overcome or mitigate at least one aspect of the above - mentioned difficulties.

Means for Solving the Problems

[0005] According to one aspect of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes a power transmission component including an aluminum bar having a first connection end portion, and a terminal having a second connection end portion. The first connection end portion of the aluminum bar and the second connection end portion of the terminal are directly welded to each other to electrically connect the aluminum bar and the terminal.

[0006] According to an exemplary embodiment of the present invention, the first connection end portion of the aluminum bar and the second connection end portion of the terminal are directly welded to each other by ultrasonic welding, brazing, or friction welding.

[0007] According to another exemplary embodiment of the present invention, the electrical connection assembly further includes a connection piece passing through the first connection end portion of the aluminum bar and the second connection end portion of the terminal to fix the first connection end portion of the aluminum bar and the second connection end portion of the terminal to each other.

[0008] According to another exemplary embodiment of the present invention, a first connection hole is formed in the first connection end portion of the aluminum bar, a second connection hole corresponding to the first connection hole is formed in the second connection end portion of the terminal, and the first connection end portion of the aluminum bar and the second connection end portion of the terminal are also fixed to each other by a connection piece passing through the first connection hole and the second connection hole.

[0009] According to another exemplary embodiment of the present invention, the connection piece includes a bolt and a nut. The bolt passes through the first connection hole and the second connection hole and is screwed with the nut.

[0010] According to another exemplary embodiment of the present invention, the second connection end portion of the terminal is flat and has two opposite surfaces in the thickness direction of the second connection end portion. One surface of the second connection end portion of the terminal is welded to the first connection end portion of the aluminum bar, the nut is disposed on the other surface of the second connection end portion of the terminal, and is at least partially riveted to the second connection hole.

[0011] According to another exemplary embodiment of the present invention, a riveting structure is also formed at the first connection end of the aluminum bar and the second connection end of the terminal, and the first connection end of the aluminum bar and the second connection end of the terminal are also riveted to each other by the riveting structure.

[0012] According to another exemplary embodiment of the present invention, the riveting structure includes a riveting hole formed at the first connection end of the aluminum bar and a riveting post formed at the second connection end of the terminal. The riveting post is riveted to the riveting hole so as to rivet the first connection end of the aluminum bar and the second connection end of the terminal to each other.

[0013] According to another exemplary embodiment of the present invention, a stepped portion is formed inside the riveting hole, a flange portion is formed at the top of the riveting post, and the flange portion is pressed against the stepped portion in the axial direction of the riveting hole so as to axially connect the riveting post and the riveting hole.

[0014] According to another exemplary embodiment of the present invention, the terminal also has a cylindrical fitting end for fitting with a mating terminal, and the cylindrical fitting end and the second connection end are respectively arranged at both ends of the terminal.

[0015] According to another exemplary embodiment of the present invention, the terminal is an integral stamped terminal.

[0016] According to another exemplary embodiment of the present invention, the first connection end of the aluminum bar has an upper surface and a bottom surface on opposite sides in the thickness direction of the first connection end, the second connection end of the terminal is flat and has an upper surface and a bottom surface on opposite sides in the thickness direction of the second connection end, the bottom surface of the first connection end of the aluminum bar is welded to the upper surface of the second connection end of the terminal, and both the upper surface and the bottom surface of the first connection end of the aluminum bar and the upper surface and the bottom surface of the second connection end of the terminal are flat surfaces perpendicular to the thickness direction of the aluminum bar.

[0017] According to another exemplary embodiment of the present invention, the width of the first connection end portion of the aluminum bar is equal to the width of the main body of the aluminum bar, and the two surfaces in the width direction of the first connection end portion of the aluminum bar are flush with the two surfaces in the width direction of the main body of the aluminum bar.

[0018] According to another exemplary embodiment of the present invention, the width of the first connection end portion of the aluminum bar is smaller than the width of the main body of the aluminum bar, and the first connection end portion of the aluminum bar is offset toward one side in the width direction of the aluminum bar.

[0019] According to another exemplary embodiment of the present invention, the power transmission component further includes an insulating layer wound around the main body of the aluminum bar, and the first connection end portion of the aluminum bar is exposed from the insulating layer.

[0020] According to another aspect of the present invention, a charging pedestal is provided. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminals of the electrical connection assembly are installed in the housing, and the aluminum bar of the power transmission component extends from the housing.

[0021] In the above-described exemplary embodiment according to the present invention, the first connection end portion of the aluminum bar and the second connection end portion of the terminal are directly welded to each other, thereby effectively avoiding the problem of electrochemical corrosion, extending the service life of the product, and improving the electrical connection performance of the product.

[0022] In the above-described exemplary embodiment according to the present invention, the first connection end portion of the aluminum bar and the second connection end portion of the terminal are also fixed to each other by a connecting piece or riveted to each other by a riveting structure, thereby further improving the reliability of the electrical connection between the aluminum bar and the terminal.

[0023] The above and other features of the present invention will become more apparent by describing its exemplary embodiments in detail with reference to the accompanying drawings.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Modes for Carrying Out the Invention

[0025] Referring to the accompanying drawings, exemplary embodiments of the present disclosure will be described in detail below. In the drawings, like reference numerals refer to like elements. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.

[0026] In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown schematically in order to simplify the drawings.

[0027] According to a general concept of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes a power transmission component including an aluminum bar having a first connection end, and a terminal having a second connection end. The first connection end of the aluminum bar and the second connection end of the terminal are directly welded to each other to electrically connect the aluminum bar and the terminal.

[0028] According to another general concept of the present invention, a charging pedestal is provided. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminal of the electrical connection assembly is installed in the housing, and the aluminum bar of the power transmission component extends from the housing.

[0029] First Embodiment FIGS. 1 and 2 show an electrical connection assembly according to a first embodiment of the present invention. Among them, FIG. 1 shows an explanatory perspective view of the electrical connection assembly according to the first embodiment of the present invention. FIG. 2 shows an explanatory exploded view of the electrical connection assembly according to the first embodiment of the present invention.

[0030] As shown in FIGS. 1 and 2, in an exemplary embodiment of the present invention, an electrical connection assembly is disclosed. The electrical connection assembly includes a power transmission component 1 and a terminal 2. The power transmission component 1 includes an aluminum bar 10 having a first connection end 11. The terminal 2 has a second connection terminal 21. The first connection end 11 of the aluminum bar 10 and the second connection end 21 of the terminal 2 are directly welded to each other to electrically connect the aluminum bar 10 and the terminal 2.

[0031] As shown in FIGS. 1 and 2, in an exemplary embodiment of the present invention, the first connection end 11 of the aluminum bar 10 and the second connection end 21 of the terminal 2 may be directly welded to each other by ultrasonic welding, brazing, friction welding, or other suitable methods.

[0032] As shown in FIGS. 1 and 2, in the illustrated embodiment, the terminal 2 also has a cylindrical fitting end 22, and the cylindrical fitting end 22 and the second connection end 21 are disposed at both ends of the terminal 2, respectively. The cylindrical fitting end 22 of the terminal 2 is used for fitting with a mating terminal (not shown).

[0033] As shown in FIGS. 1 and 2, in the illustrated embodiment, the terminal 2 is an integral stamped copper terminal. However, the present invention is not limited to the illustrated embodiment. For example, the terminal 2 may be a machined terminal.

[0034] As shown in FIGS. 1 and 2, in the illustrated embodiment, the first connection end 11 of the aluminum bar 10 has an upper surface and a bottom surface on opposite sides in the thickness direction of the first connection end 11, the second connection end 21 of the terminal 2 is flat, and has an upper surface and a bottom surface on opposite sides in the thickness direction of the second connection end 21. The bottom surface of the first connection end 11 of the aluminum bar 10 is welded to the upper surface of the second connection end 21 of the terminal 2, and both the upper surface and the bottom surface of the first connection end 11 of the aluminum bar 10 and the upper surface and the bottom surface of the second connection end 21 of the terminal 2 are flat surfaces perpendicular to the thickness direction of the aluminum bar 10.

[0035] As shown in FIGS. 1 and 2, in the illustrated embodiment, the width of the first connection end portion 11 of the aluminum bar 10 is smaller than the width of the main body of the aluminum bar 10, and the first connection end portion 11 of the aluminum bar 10 is offset toward one side in the width direction of the aluminum bar 10.

[0036] As shown in FIGS. 1 and 2, in the illustrated embodiment, the power transmission component 1 further includes an insulating layer 12 wound around the main body of the aluminum bar 10, and the first connection end portion 11 of the aluminum bar 10 is exposed from the insulating layer 12.

[0037] As shown in FIGS. 1 and 2, in another exemplary embodiment of the present invention, a charging pedestal is also disclosed. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminal 2 of the electrical connection assembly is installed in the housing, and the aluminum bar 10 of the power transmission component 1 extends from the housing.

[0038] Second Embodiment FIGS. 3 to 6 show an electrical connection assembly according to a second embodiment of the present invention. Among them, FIG. 3 shows an explanatory perspective view of the electrical connection assembly according to the second embodiment of the present invention. FIG. 4 shows an explanatory exploded view of the electrical connection assembly according to the second embodiment of the present invention. FIG. 5 shows a longitudinal sectional view of the electrical connection assembly according to the second embodiment of the present invention. FIG. 6 shows an exploded sectional view of the electrical connection assembly according to the second embodiment of the present invention.

[0039] As shown in FIGS. 3 to 6, in an exemplary embodiment of the present invention, an electrical connection assembly is disclosed. The electrical connection assembly includes a power transmission component 1 and a terminal 2. The power transmission component 1 includes an aluminum bar 10 having a first connection end portion 11. The terminal 2 has a second connection terminal 21. The first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 are directly welded to each other to electrically connect the aluminum bar 10 and the terminal 2.

[0040] As shown in FIGS. 3 to 6, in an exemplary embodiment of the present invention, the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 may be directly welded to each other by ultrasonic welding, brazing, friction welding, or other suitable methods.

[0041] As shown in FIGS. 3 to 6, in the illustrated embodiment, the electrical connection assembly further includes a connection piece 3 passing through the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 to fix the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 to each other. Thereby, the reliability of the electrical connection between the aluminum bar 10 and the terminal 2 can be further improved.

[0042] As shown in FIGS. 3 to 6, in the illustrated embodiment, a first connection hole 101 is formed in the first connection end portion 11 of the aluminum bar 10, and a second connection hole 201 corresponding to the first connection hole 101 is formed in the second connection end portion 21 of the terminal 2. The first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 are also fixed to each other by a connection piece 3 passing through the first connection hole 101 and the second connection hole 201.

[0043] As shown in FIGS. 3 to 6, in the illustrated embodiment, the connection piece 3 includes a bolt 31 and a nut 32. The bolt 31 passes through the first connection hole 101 and the second connection hole 201 and is screwed with the nut 32.

[0044] As shown in FIGS. 3 to 6, in the illustrated embodiment, the second connection end portion 21 of the terminal 2 is flat and has two opposite surfaces in the thickness direction of the second connection end portion 21. One surface of the second connection end portion 21 of the terminal 2 is welded to the first connection end portion 11 of the aluminum bar 10, and the nut 32 is disposed on the other surface of the second connection end portion 21 of the terminal 2 and is at least partially riveted to the second connection hole 201.

[0045] As shown in FIGS. 3 to 6, in the illustrated embodiment, the terminal 2 also has a cylindrical fitting end portion 22, and the cylindrical fitting end portion 22 and the second connection end portion 21 are respectively arranged at both end portions of the terminal 2. The cylindrical fitting end portion 22 of the terminal 2 is used for fitting with a mating terminal (not shown).

[0046] As shown in FIGS. 3 to 6, in the illustrated embodiment, the terminal 2 is an integral stamped copper terminal. However, the present invention is not limited to the illustrated embodiment. For example, the terminal 2 may be a machined terminal.

[0047] As shown in FIGS. 3 to 6, in the illustrated embodiment, the first connection end portion 11 of the aluminum bar 10 has an upper surface and a bottom surface on opposite sides in the thickness direction of the first connection end portion 11. The second connection end portion 21 of the terminal 2 is flat and has an upper surface and a bottom surface on opposite sides in the thickness direction of the second connection end portion 21. The bottom surface of the first connection end portion 11 of the aluminum bar 10 is welded to the upper surface of the second connection end portion 21 of the terminal 2, and both the upper surface and the bottom surface of the first connection end portion 11 of the aluminum bar 10 and the upper surface and the bottom surface of the second connection end portion 21 of the terminal 2 are flat surfaces perpendicular to the thickness direction of the aluminum bar 10.

[0048] As shown in FIGS. 3 to 6, in the illustrated embodiment, the width of the first connection end portion 11 of the aluminum bar 10 is equal to the width of the main body of the aluminum bar 10, and both surfaces in the width direction of the first connection end portion 11 of the aluminum bar 10 are flush with both surfaces in the width direction of the main body of the aluminum bar 10.

[0049] As shown in FIGS. 3 to 6, in the illustrated embodiment, the power transmission component 1 may further include an insulating layer 12 (refer to the first embodiment shown in FIGS. 1 and 2) wound around the main body of the aluminum bar 10, and the first connection end portion 11 of the aluminum bar 10 is exposed from the insulating layer 12.

[0050] As shown in FIGS. 3 to 6, in the illustrated embodiment, bolts 31 and nuts 32 are used to screw the first connection end 11 of the aluminum bar 10 and the second connection end 21 of the terminal 2 together. However, the present invention is not limited to the illustrated embodiment. For example, a plurality of bolts 31 and a plurality of nuts 32 may be used to screw the first connection end 11 of the aluminum bar 10 and the second connection end 21 of the terminal 2 together.

[0051] As shown in FIGS. 3 to 6, in another exemplary embodiment of the present invention, a charging pedestal is also disclosed. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminal 2 of the electrical connection assembly is installed in the housing, and the aluminum bar 10 of the power transmission component 1 extends from the housing.

[0052] Third Embodiment FIGS. 7 to 10 show an electrical connection assembly according to a third embodiment of the present invention. Among them, FIG. 7 shows an explanatory perspective view of the electrical connection assembly according to the third embodiment of the present invention. FIG. 8 shows an explanatory exploded view of the electrical connection assembly according to the third embodiment of the present invention. FIG. 9 shows a longitudinal sectional view of the electrical connection assembly according to the third embodiment of the present invention. FIG. 10 shows an exploded sectional view of the electrical connection assembly according to the third embodiment of the present invention.

[0053] As shown in FIGS. 7 to 10, in an exemplary embodiment of the present invention, an electrical connection assembly is disclosed. The electrical connection assembly includes a power transmission component 1 and a terminal 2. The power transmission component 1 includes an aluminum bar 10 having a first connection end 11. The terminal 2 has a second connection terminal 21. The first connection end 11 of the aluminum bar 10 and the second connection end 21 of the terminal 2 are directly welded to each other to electrically connect the aluminum bar 10 and the terminal 2.

[0054] As shown in FIGS. 7 to 10, in an exemplary embodiment of the present invention, the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 may be directly welded to each other by ultrasonic welding, brazing, friction welding, or other suitable methods.

[0055] As shown in FIGS. 7 to 10, in the illustrated embodiment, riveting structures 110 and 210 are also formed on the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2. The first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 are also riveted to each other by the riveting structures 110 and 210. Thereby, the reliability of the electrical connection between the aluminum bar 10 and the terminal 2 can be further improved.

[0056] As shown in FIGS. 7 to 10, in the illustrated embodiment, the riveting structures 110 and 210 include riveting holes 110 and riveting posts 210. The riveting holes 110 are formed in the first connection end portion 11 of the aluminum bar 10. The riveting posts 210 are formed in the second connection end portion 21 of the terminal 2. The riveting posts 210 are riveted to the riveting holes 110 so as to rivet the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 to each other.

[0057] As shown in FIGS. 7 to 10, in the illustrated embodiment, a stepped portion 10a is formed inside the riveting hole 110, and a flange portion 210a is formed at the top of the riveting post 210. The flange portion 210a of the riveting post 210 is pressed against the stepped portion 110a inside the riveting hole 110 in the axial direction of the riveting hole 110 so as to connect the riveting post 210 and the riveting hole 110 in the axial direction.

[0058] As shown in FIGS. 7 to 10, in the illustrated embodiment, the terminal 2 also has a cylindrical fitting end portion 22, and the cylindrical fitting end portion 22 and the second connection end portion 21 are respectively arranged at both end portions of the terminal 2. The cylindrical fitting end portion 22 of the terminal 2 is used for fitting with a mating terminal (not shown).

[0059] As shown in FIGS. 7 to 10, in the illustrated embodiment, the terminal 2 is an integral stamped copper terminal. However, the present invention is not limited to the illustrated embodiment. For example, the terminal 2 may be a machined terminal.

[0060] As shown in FIGS. 7 to 10, in the illustrated embodiment, the first connection end portion 11 of the aluminum bar 10 has an upper surface and a bottom surface on opposite sides in the thickness direction of the first connection end portion 11, the second connection end portion 21 of the terminal 2 is flat, and has an upper surface and a bottom surface on opposite sides in the thickness direction of the second connection end portion 21. The bottom surface of the first connection end portion 11 of the aluminum bar 10 is welded to the upper surface of the second connection end portion 21 of the terminal 2, and both the upper surface and the bottom surface of the first connection end portion 11 of the aluminum bar 10 and the upper surface and the bottom surface of the second connection end portion 21 of the terminal 2 are flat surfaces perpendicular to the thickness direction of the aluminum bar 10.

[0061] As shown in FIGS. 7 to 10, in the illustrated embodiment, the width of the first connection end portion 11 of the aluminum bar 10 is equal to the width of the main body of the aluminum bar 10, and both surfaces in the width direction of the first connection end portion 11 of the aluminum bar 10 are flush with both surfaces in the width direction of the main body of the aluminum bar 10.

[0062] As shown in FIGS. 7 to 10, in the illustrated embodiment, the power transmission component 1 may further include an insulating layer 12 (see the first embodiment shown in FIGS. 1 and 2) wound around the main body of the aluminum bar 10, and the first connection end portion 11 of the aluminum bar 10 is exposed from the insulating layer 12.

[0063] As shown in FIGS. 7 to 10, in the illustrated embodiment, the riveting post 210 and the riveting hole 110 are used to rivet the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 to each other. However, the present invention is not limited to the illustrated embodiment. For example, a plurality of riveting posts 210 and a plurality of riveting holes 110 may be used to rivet the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 to each other.

[0064] As shown in FIGS. 7 to 10, in another exemplary embodiment of the present invention, a charging pedestal is also disclosed. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminal 2 of the electrical connection assembly is installed in the housing, and the aluminum bar 10 of the power transmission component 1 extends from the housing.

[0065] Fourth Embodiment FIGS. 11 and 12 show an electrical connection assembly according to a fourth embodiment of the present invention. Among them, FIG. 11 shows an explanatory perspective view of the electrical connection assembly according to the fourth embodiment of the present invention. FIG. 12 shows an explanatory exploded view of the electrical connection assembly according to the fourth embodiment of the present invention.

[0066] As shown in FIGS. 11 and 12, in an exemplary embodiment of the present invention, an electrical connection assembly is disclosed. The electrical connection assembly includes a power transmission component 1 and a terminal 2. The power transmission component 1 includes an aluminum bar 10 having a first connection end portion 11. The terminal 2 has a second connection terminal 21. The first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 are directly welded to each other to electrically connect the aluminum bar 10 and the terminal 2.

[0067] As shown in FIGS. 11 and 12, in an exemplary embodiment of the present invention, the first connection end portion 11 of the aluminum bar 10 and the second connection end portion 21 of the terminal 2 may be directly welded to each other by ultrasonic welding, brazing, friction welding, or other suitable methods.

[0068] As shown in FIGS. 11 and 12, in the illustrated embodiment, the terminal 2 also has a cylindrical fitting end portion 22, and the cylindrical fitting end portion 22 and the second connection end portion 21 are disposed at both end portions of the terminal 2, respectively. The cylindrical fitting end portion 22 of the terminal 2 is used for fitting with a mating terminal (not shown).

[0069] As shown in FIGS. 11 and 12, in the illustrated embodiment, the terminal 2 is an integral stamped copper terminal. However, the present invention is not limited to the illustrated embodiment. For example, the terminal 2 may be a machined terminal.

[0070] As shown in FIGS. 11 and 12, in the illustrated embodiment, the first connection end portion 11 of the aluminum bar 10 has an upper surface and a bottom surface on opposite sides in the thickness direction of the first connection end portion 11, the second connection end portion 21 of the terminal 2 is flat, and has an upper surface and a bottom surface on opposite sides in the thickness direction of the second connection end portion 21. The bottom surface of the first connection end portion 11 of the aluminum bar 10 is welded to the upper surface of the second connection end portion 21 of the terminal 2, and both the upper surface and the bottom surface of the first connection end portion 11 of the aluminum bar 10 and the upper surface and the bottom surface of the second connection end portion 21 of the terminal 2 are flat surfaces perpendicular to the thickness direction of the aluminum bar 10.

[0071] As shown in FIGS. 11 and 12, in the illustrated embodiment, the width of the first connection end portion 11 of the aluminum bar 10 is equal to the width of the main body of the aluminum bar 10, and both surfaces in the width direction of the first connection end portion 11 of the aluminum bar 10 are flush with both surfaces in the width direction of the main body of the aluminum bar 10.

[0072] As shown in FIGS. 11 and 12, in the illustrated embodiment, the power transmission component 1 further includes an insulating layer 12 (refer to the first embodiment shown in FIGS. 1 and 2) wound around the main body of the aluminum bar 10, and the first connection end portion 11 of the aluminum bar 10 is exposed from the insulating layer 12.

[0073] As shown in FIGS. 11 and 12, in another exemplary embodiment of the present invention, a charging pedestal is also disclosed. The charging pedestal includes a housing and the above-described electrical connection assembly. The terminal 2 of the electrical connection assembly is installed in the housing, and the aluminum bar 10 of the power transmission component 1 extends from the housing.

[0074] In the above-described exemplary embodiments of the present invention, a new innovative design structure is provided, one of which is the direct ultrasonic welding of the aluminum bar and the charging terminal to solve the problem of electrochemical corrosion. In addition, based on the above-described technical solution, one or more screwing, riveting, or other forms of fixing can be further added to improve the reliability of the connection between the aluminum bar and the terminal.

[0075] The wiring harness from the current electric vehicle charging port to the battery pack is connected by copper or aluminum wires, but the cross-sectional area of the copper or aluminum wires is limited by the market to 120 mm 2 so it is impossible to further increase the cross-sectional area of the copper or aluminum wires. Since the cross-sectional area of the aluminum bar can reach 400 mm 2 using the aluminum bar can increase the cross-sectional area of the conductor, thereby further improving the charging current and shortening the charging time.

[0076] The present invention relates to an aluminum bar connection design for a charging pedestal. At present, all the aluminum bars and terminals inside the charging pedestals in the market are screw-connected. One solution of this application is to directly weld the charging terminal and the aluminum bar before installing them on the charging pedestal, and the welded connection is highly reliable.

[0077] It should be understood by those skilled in the art that the above embodiments are intended to be illustrative rather than limiting. For example, numerous modifications may be made by those skilled in the art to the above embodiments, and the various features described in the various embodiments may be freely combined with each other as long as they do not conflict in structure or principle.

[0078] Although some exemplary embodiments have been shown and described, it will be understood by those skilled in the art that various changes or modifications may be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure is defined in the claims and their equivalents.

[0079] As used herein, an element described in the singular and preceded by the word "a" should be understood not to exclude a plurality of such elements or steps, unless it is explicitly stated otherwise. Furthermore, the description of "one embodiment" of the present invention is not intended to exclude the existence of additional embodiments that incorporate the same described features. In addition, unless otherwise explicitly stated, an embodiment "comprising" or "having" an element or elements with a particular property may include additional such elements that do not have that property.

Claims

1. a power transmission component (1) comprising an aluminum bar (10) having a first connection end (11); A terminal (2) having a second connection end (21); 1. An electrical connection assembly comprising: the first connection end (11) of the aluminum bar (10) and the second connection end (21) of the terminal (2) are directly welded to each other to electrically connect the aluminum bar (10) and the terminal (2); Electrical connection assembly.

2. the first connecting end (11) of the aluminum bar (10) and the second connecting end (21) of the terminal (2) are directly welded to each other by ultrasonic welding, brazing or friction welding; The electrical connection assembly of claim 1 .

3. a connecting piece (3) passing through the first connecting end (11) of the aluminum bar (10) and the second connecting end (21) of the terminal (2) to fix the first connecting end (11) of the aluminum bar (10) and the second connecting end (21) of the terminal (2) to each other; The electrical connection assembly of claim 1 further comprising:

4. A first connection hole (101) is formed in the first connection end (11) of the aluminum bar (10), and a second connection hole (201) corresponding to the first connection hole (101) is formed in the second connection end (21) of the terminal (2); The first connection end (11) of the aluminum bar (10) and the second connection end (21) of the terminal (2) are also fixed to each other by the connection piece (3) passing through the first connection hole (101) and the second connection hole (201).

4. The electrical connection assembly of claim 3.

5. The connection piece (3) includes a bolt (31) and a nut (32), and the bolt (31) passes through the first connection hole (101) and the second connection hole (201) and is screwed into the nut (32).

5. The electrical connection assembly of claim 4.

6. the second connection end (21) of the terminal (2) is flat and has two opposite faces in a thickness direction of the second connection end (21), one face of the second connection end (21) of the terminal (2) is welded to the first connection end (11) of the aluminum bar (10), and the nut (32) is disposed on the other face of the second connection end (21) of the terminal (2) and is at least partially riveted into the second connection hole (201); 6. The electrical connection assembly of claim 5.

7. a riveting structure (110, 210) is also formed on the first connection end (11) of the aluminum bar (10) and the second connection end (21) of the terminal (2), and the first connection end (11) of the aluminum bar (10) and the second connection end (21) of the terminal (2) are also riveted to each other by the riveting structure (110, 210); The electrical connection assembly of claim 1 .

8. The riveting structure (110, 210) comprises: a riveting hole (110) formed in the first connecting end (11) of the aluminum bar (10); a riveting post (210) formed on the second connection end (21) of the terminal (2); Equipped with the riveting post (210) is riveted into the riveting hole (110) so as to rivet together the first connection end (11) of the aluminum bar (10) and the second connection end (21) of the terminal (2); 8. The electrical connection assembly of claim 7.

9. a step portion (110a) is formed on the inside of the riveting hole (110), a flange portion (210a) is formed on the top of the riveting post (210), and the flange portion (210a) is pressed against the step portion (110a) in the axial direction of the riveting hole (110) so as to axially connect the riveting post (210) and the riveting hole (110); 9. The electrical connection assembly of claim 8.

10. The terminal (2) also has a cylindrical mating end (22) for mating with a mating terminal, and the cylindrical mating end (22) and the second connection end (21) are disposed at both ends of the terminal (2), respectively. The electrical connection assembly of claim 1 .

11. The electrical connection assembly of claim 10, wherein the terminal (2) is a one-piece stamped terminal.

12. The first connection end (11) of the aluminum bar (10) has a top surface and a bottom surface that are opposite in a thickness direction of the first connection end (11), and the second connection end (21) of the terminal (2) is flat and has a top surface and a bottom surface that are opposite in a thickness direction of the second connection end (21); the bottom surface of the first connection end (11) of the aluminum bar (10) is welded to the top surface of the second connection end (21) of the terminal (2), and both the top and bottom surfaces of the first connection end (11) of the aluminum bar (10) and the top and bottom surfaces of the second connection end (21) of the terminal (2) are flat surfaces perpendicular to the thickness direction of the aluminum bar (10); The electrical connection assembly of claim 1 .

13. The width of the first connection end (11) of the aluminum bar (10) is equal to the width of the main body of the aluminum bar (10), and the two faces in the width direction of the first connection end (11) of the aluminum bar (10) are flush with the two faces in the width direction of the main body of the aluminum bar (10). The electrical connection assembly of claim 1 .

14. The width of the first connection end (11) of the aluminum bar (10) is smaller than the width of the main body of the aluminum bar (10), and the first connection end (11) of the aluminum bar (10) is biased toward one side in the width direction of the aluminum bar (10). The electrical connection assembly of claim 1 .

15. The power transmission component (1) further comprises an insulating layer (12) wrapped around a body of the aluminum bar (10), and the first connection end (11) of the aluminum bar (10) is exposed from the insulating layer (12).

15. The electrical connection assembly of any one of claims 1 to 14.

16. Housing and The electrical connection assembly according to any one of claims 1 to 15. A charging base comprising: The terminals (2) of the electrical connection assembly are mounted in the housing and the aluminum bar (10) of the power transmission component (1) extends from the housing. Charging base.

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