Charging terminal and charging device

Abstract

The utility model discloses a charging terminal and a charging device. The charging terminal comprises a matching part which is cylindrical and is used for matching with a columnar matching terminal; and the welding part is used for being welded on a cable so as to be electrically connected with the cable. The matching part is an integrated stamping part, the welding part is an integrated cold heading part, and the front end of the welding part is welded, riveted or crimped to the rear end of the matching part. According to the utility model, at least one part of the charging terminal is the cold heading piece, and the cold heading piece not only is low in manufacturing cost, but also can bear larger charging current.

Description

Technical Field

[0001] The utility model relates to a charging terminal and a charging device comprising the charging terminal. Background Art

[0002] In the prior art, the charging terminals for electric vehicle charging stations are typically integrated machined parts. While machined terminals have a high current-carrying capacity, they are expensive to manufacture and lack a competitive advantage. To reduce costs, stamped charging terminals were initially adopted, but these have poor current-carrying capacity. However, to shorten charging times, electric vehicle charging currents are increasing, reaching as high as 1000A. Existing stamped charging terminals are unable to meet this requirement. Utility Model Content

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, a charging terminal is provided. The charging terminal comprises a cylindrical mating portion configured to mate with a cylindrical mating terminal; and a welding portion configured to be welded to a cable for electrical connection. The mating portion is a one-piece stamped part, and the welding portion is a one-piece cold-headed part. The front end of the welding portion is welded, riveted, or crimped to the rear end of the mating portion.

[0005] According to an exemplary embodiment of the present invention, the mating part is a copper part or a copper alloy part, and the welding part is an aluminum part, a copper part, a copper alloy part or an aluminum alloy part.

[0006] According to another exemplary embodiment of the present invention, a plurality of elastic arms are formed on the peripheral wall of the mating portion, and the plurality of elastic arms are spaced apart in the circumferential direction of the mating portion for electrically contacting the mating terminals inserted into the mating portion.

[0007] According to another exemplary embodiment of the present invention, a plurality of windows are formed on the peripheral wall of the mating portion, and the plurality of elastic arms are respectively suspended in the plurality of windows; the rear end of the elastic arm is connected to the rear side of the window, and the front end of the elastic arm slightly protrudes into the inner cavity of the mating portion to electrically contact the inserted mating terminal.

[0008] According to another exemplary embodiment of the present invention, the mating portion has two splicing edges extending along its axial direction, a protrusion is formed on one of the two splicing edges, and a groove engaged with the protrusion is formed on the other to splice the two splicing edges together.

[0009] According to another exemplary embodiment of the present application, the protrusion and the groove are dovetail-shaped, T-shaped or omega-shaped.

[0010] According to another exemplary embodiment of the present application, two protrusions are formed on one of the joint edges of the mating portion, and the two protrusions are close to the front end and the rear end of the mating portion respectively; two grooves are formed on the other joint edge of the mating portion, and the two grooves are close to the front end and the rear end of the mating portion respectively.

[0011] According to another exemplary embodiment of the present application, the welding portion has a cylindrical front end and a flat rear end, the cylindrical front end of the welding portion is welded to the rear end of the mating portion, and the flat rear end of the welding portion is adapted to be welded to the conductor of the cable.

[0012] According to another aspect of the present application, a charging terminal is provided. The charging terminal comprises: a mating portion in a cylindrical shape, configured to mate with a mating terminal in a cylindrical shape; and a welding portion, configured to be welded to a cable to be electrically connected with the cable, the mating portion is an integral cold heading part, the welding portion is an integral cold heading part, and a front end of the welding portion is welded, riveted or crimped to a rear end of the mating portion.

[0013] According to an exemplary embodiment of the present application, the mating portion is a copper part or a copper alloy part, and the welding portion is an aluminum part, a copper part, a copper alloy part or an aluminum alloy part.

[0014] According to another exemplary embodiment of the present application, a plurality of separation grooves are formed on the peripheral wall of the mating portion, the plurality of separation grooves are distributed at intervals in the circumferential direction of the mating portion and extend along the axial direction of the mating portion to the front end face of the mating portion, so that the peripheral wall of the mating portion is divided into a plurality of cantilever portions for electrically contacting the mating terminal inserted into the mating portion.

[0015] According to another exemplary embodiment of the present application, the extension length of the separation groove and the cantilever portion in the axial direction of the mating portion is greater than half of the axial length of the mating portion and less than the axial length of the mating portion.

[0016] According to another exemplary embodiment of the present application, the welding portion has a cylindrical front end and a flat rear end, the cylindrical front end of the welding portion is welded to the rear end of the mating portion, and the flat rear end of the welding portion is adapted to be welded to the conductor of the cable.

[0017] According to another aspect of the present application, a charging device is provided. The charging device comprises: a housing; and the aforementioned charging terminal arranged in the housing.

[0018] According to one exemplary embodiment of the present application, the charging device further comprises a cable, one end of which extends into the housing and is welded to the flat rear end of the welding portion of the charging terminal.

[0019] According to another exemplary embodiment of the present application, the charging device is a charging base or a charging gun.

[0020] In the aforementioned various exemplary embodiments according to the present application, at least a portion of the charging terminal is a cold heading part, which not only has low manufacturing cost, but also can bear a larger charging current.

[0021] Other objects and advantages of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating the principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 1 shows a perspective view of a charging terminal according to an exemplary first embodiment of the present application, viewed from the front side;

[0023] Figure 2 Fig. 2 shows an exploded view of the charging terminal according to the exemplary first embodiment of the present application, viewed from the front side;

[0024] Figure 3 Fig. 3 shows a perspective view of the charging terminal according to the exemplary first embodiment of the present application, viewed from the rear side;

[0025] Figure 4 Fig. 4 shows an exploded view of the charging terminal according to the exemplary first embodiment of the present application, viewed from the rear side;

[0026] Figure 5 Fig. 5 shows a perspective view of a charging terminal according to an exemplary second embodiment of the present application, viewed from the front side;

[0027] Figure 6 Fig. 6 shows an exploded view of the charging terminal according to the exemplary second embodiment of the present application, viewed from the front side;

[0028] Figure 7 Fig. 7 shows a perspective view of the charging terminal according to the exemplary second embodiment of the present application, viewed from the rear side;

[0029] Figure 8 Fig. 8 shows an exploded view of the charging terminal according to the exemplary second embodiment of the present application, viewed from the rear side. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall concept of the present invention and should not be construed as limiting the present invention.

[0031] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.

[0032] According to one general technical concept of the present invention, a charging terminal is provided. The charging terminal comprises a cylindrical mating portion for mating with a cylindrical mating terminal; and a welding portion for welding to a cable to electrically connect the two. The mating portion is a one-piece stamped part, and the welding portion is a one-piece cold-headed part. The front end of the welding portion is welded, riveted, or crimped to the rear end of the mating portion.

[0033] According to another general technical concept of the present invention, a charging terminal is provided. The charging terminal includes: a cylindrical mating portion for mating with a cylindrical mating terminal; and a welding portion for welding to a cable to electrically connect the cable; the mating portion is a one-piece cold-headed component; the welding portion is a one-piece cold-headed component; and the front end of the welding portion is welded, riveted, or crimped to the rear end of the mating portion.

[0034] According to another general technical concept of the present invention, a charging device is provided, comprising: a housing; and the aforementioned charging terminal disposed in the housing.

[0035] First embodiment

[0036] Figures 1 to 4 The first embodiment of the charging terminal according to the present invention is shown. Figure 1 A perspective schematic diagram showing a charging terminal 1 according to a first exemplary embodiment of the present invention when viewed from the front side; Figure 2 An exploded schematic diagram showing a charging terminal 1 according to a first exemplary embodiment of the present invention as viewed from the front side; Figure 3 A perspective schematic diagram showing a charging terminal 1 according to a first exemplary embodiment of the present invention when viewed from the rear side;

[0037] Figure 4 The figure shows an exploded schematic view of a charging terminal 1 according to a first exemplary embodiment of the present invention when viewed from the rear side.

[0038] As Figures 1 to 4 shown in one exemplary embodiment of the present application, a charging terminal 1 is disclosed. The charging terminal 1 comprises a mating portion 11 and a soldering portion 12. The mating portion 11 is a hollow cylinder for mating with a cylindrical mating terminal (not shown). The soldering portion 12 is for soldering to a cable (not shown) for electrical connection with the cable. The mating portion 11 is an integral stamping, and the soldering portion 12 is an integral cold heading, and the front end of the soldering portion 12 is soldered, riveted or crimped to the rear end of the mating portion 11.

[0039] As Figures 1 to 4 shown in the illustrated embodiment, the mating portion 11 can be a copper or copper alloy piece, and the soldering portion 12 can be an aluminum, copper, copper alloy or aluminum alloy piece.

[0040] As Figures 1 to 4 shown in the illustrated embodiment, a plurality of elastic arms 111 are formed on the peripheral wall of the mating portion 11, and the plurality of elastic arms 111 are spaced apart in the circumferential direction of the mating portion 11 for electrical contact with the mating terminal inserted into the mating portion 11.

[0041] As Figures 1 to 4 shown in the illustrated embodiment, a plurality of windows 112 are formed on the peripheral wall of the mating portion 11, and the plurality of elastic arms 111 are respectively suspended in the plurality of windows 112. The rear end of the elastic arm 111 is connected to the rear side of the window 112, and the front end of the elastic arm 111 slightly protrudes into the inner cavity of the mating portion 11 for electrical contact with the inserted mating terminal.

[0042] As Figures 1 to 4 shown in the illustrated embodiment, the mating portion 11 has two splice edges 110 extending in the axial direction thereof, and a protrusion 11a is formed on one of the two splice edges 110, and a groove 11b engaging with the protrusion 11a is formed on the other of the two splice edges 110 to splice the two splice edges 110 together.

[0043] As Figures 1 to 4 shown in the illustrated embodiment, the protrusion 11a and the groove 11b on the splice edge 110 are dovetail-shaped, T-shaped or Ω-shaped. In this way, the two splice edges 110 can be prevented from disengaging in the circumferential direction of the mating portion 11.

[0044] As Figures 1 to 4 shown in the illustrated embodiment, two protrusions 11a are formed on one of the splice edges 110 of the mating portion 11, and the two protrusions 11a are respectively close to the front end and the rear end of the mating portion 11. Two grooves 11b are formed on the other of the splice edges 110 of the mating portion 11, and the two grooves 11b are respectively close to the front end and the rear end of the mating portion 11.

[0045] As Figures 1 to 4 As shown, in the illustrated embodiment, the welding portion 12 has a columnar front end 121 and a flat rear end 122, the columnar front end 121 of the welding portion 12 is welded to the rear end of the mating portion 11, and the flat rear end 122 of the welding portion 12 is suitable for welding to the conductor of the cable.

[0046] like Figures 1 to 4 As shown, in another exemplary embodiment of the present invention, a charging device is also disclosed. The charging device includes a housing (not shown) and a charging terminal 1. The charging terminal 1 is disposed in the housing.

[0047] like Figures 1 to 4 As shown, in the illustrated embodiment, the charging device further includes a cable (not shown), one end of which extends into the housing and is welded to the flat rear end 122 of the welding portion 12 of the charging terminal 1 .

[0048] like Figures 1 to 4 As shown, in the illustrated embodiment, the charging device is a charging stand or a charging gun.

[0049] Second embodiment

[0050] Figures 5 to 8 The second embodiment of the charging terminal according to the present invention is shown. Figure 5 A perspective schematic diagram showing a charging terminal 1 according to a second exemplary embodiment of the present invention when viewed from the front side; Figure 6 An exploded schematic diagram showing a charging terminal 1 according to a second exemplary embodiment of the present invention when viewed from the front side; Figure 7 A perspective schematic diagram showing a charging terminal 1 according to a second exemplary embodiment of the present invention when viewed from the rear side;

[0051] Figure 8 The figure shows an exploded schematic view of a charging terminal 1 according to a second exemplary embodiment of the present invention when viewed from the rear side.

[0052] like Figures 5 to 8 As shown, in an exemplary embodiment of the present invention, a charging terminal 1 is disclosed. The charging terminal 1 includes: a mating portion 11 and a welding portion 12. The mating portion 11 is in the shape of a hollow cylinder, and is used to mate with a columnar mating terminal (not shown). The welding portion 12 is used to be welded to a cable (not shown) to be electrically connected to the cable. The mating portion 11 is an integral cold heading part, the welding portion 12 is an integral cold heading part, and the front end of the welding portion 12 is welded, riveted or crimped to the rear end of the mating portion 11.

[0053] like Figures 5 to 8 As shown, in the illustrated embodiment, the mating portion 11 may be a copper part or a copper alloy part, and the welding portion 12 may be an aluminum part, a copper part, a copper alloy part or an aluminum alloy part.

[0054] like Figures 5 to 8 As shown, in the illustrated embodiment, a plurality of separation grooves 11c are formed on the peripheral wall of the mating portion 11, and the plurality of separation grooves 11c are spaced apart in the circumferential direction of the mating portion 11 and extend along the axial direction of the mating portion 11 to the front end surface of the mating portion 11, so that the peripheral wall of the mating portion 11 is divided into a plurality of cantilever portions 11d, and the plurality of cantilever portions 11d are used to make electrical contact with the mating terminals inserted into the mating portion 11.

[0055] like Figures 5 to 8 As shown, in the illustrated embodiment, the extending length of the separation groove 11 c and the cantilever portion 11 d in the axial direction of the mating portion 11 is greater than half of the axial length of the mating portion 11 and less than the axial length of the mating portion 11 .

[0056] like Figures 5 to 8 As shown, in the illustrated embodiment, the welding portion 12 has a columnar front end 121 and a flat rear end 122, the columnar front end 121 of the welding portion 12 is welded to the rear end of the mating portion 11, and the flat rear end 122 of the welding portion 12 is suitable for welding to the conductor of the cable.

[0057] like Figures 5 to 8 As shown, in another exemplary embodiment of the present invention, a charging device is also disclosed. The charging device includes a housing (not shown) and a charging terminal 1. The charging terminal 1 is disposed in the housing.

[0058] like Figures 5 to 8 As shown, in the illustrated embodiment, the charging device further includes a cable (not shown), one end of which extends into the housing and is welded to the flat rear end 122 of the welding portion 12 of the charging terminal 1 .

[0059] like Figures 5 to 8 As shown, in the illustrated embodiment, the charging device is a charging stand or a charging gun.

[0060] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle. These changes should fall within the scope of protection of the present invention.

[0061] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0062] While some embodiments of the general inventive concept have been shown and described, it is to be understood that changes can be made in these embodiments, without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

[0063] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. Additionally, any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. A charging terminal, characterized in that: include: The mating portion (11) is cylindrical and is used to mate with the columnar mating terminal; and a welding portion (12), used for welding to a cable to electrically connect to the cable, The mating portion (11) is an integral stamping part, the welding portion (12) is an integral cold heading part, and the front end of the welding portion (12) is welded, riveted or pressed to the rear end of the mating portion (11).

2. The charging terminal according to claim 1, characterized in that: The mating part (11) is a copper part or a copper alloy part, and the welding part (12) is an aluminum part, a copper part, a copper alloy part or an aluminum alloy part.

3. The charging terminal according to claim 1, wherein: A plurality of elastic arms (111) are formed on the peripheral wall of the mating portion (11), and the plurality of elastic arms (111) are spaced apart in the circumferential direction of the mating portion (11) and are used for electrically contacting a mating terminal inserted into the mating portion (11).

4. The charging terminal according to claim 3, characterized in that: A plurality of windows (112) are formed on the peripheral wall of the mating portion (11), and the plurality of elastic arms (111) are respectively suspended in the plurality of windows (112); The rear end of the elastic arm (111) is connected to the rear side of the window (112), and the front end of the elastic arm (111) slightly protrudes into the inner cavity of the mating portion (11) to electrically contact the inserted mating terminal.

5. The charging terminal according to claim 1, characterized in that: The mating portion (11) has two splicing edges (110) extending along its axial direction, a protrusion (11a) is formed on one of the two splicing edges (110), and a groove (11b) engaged with the protrusion (11a) is formed on the other, so as to splice the two splicing edges (110) together.

6. The charging terminal according to claim 5, characterized in that: The protrusion (11a) and the groove (11b) are in a swallowtail shape, a T shape or an Ω shape.

7. The charging terminal according to claim 5, characterized in that: Two protrusions (11a) are formed on a splicing edge (110) of the mating portion (11), and the two protrusions (11a) are respectively close to the front end and the rear end of the mating portion (11); Two grooves (11b) are formed on the other splicing edge (110) of the mating portion (11), and the two grooves (11b) are respectively close to the front end and the rear end of the mating portion (11).

8. The charging terminal according to claim 1, wherein: The welding portion (12) has a columnar front end (121) and a flat rear end (122), the columnar front end (121) of the welding portion (12) is welded to the rear end of the matching portion (11), and the flat rear end (122) of the welding portion (12) is suitable for welding to the conductor of the cable.

9. A charging terminal, characterized in that: include: The mating portion (11) is cylindrical and is used to mate with the columnar mating terminal; and a welding portion (12), used for welding to a cable to electrically connect to the cable, The mating portion (11) is an integral cold-forged part, the welding portion (12) is an integral cold-forged part, and the front end of the welding portion (12) is welded, riveted, or pressed to the rear end of the mating portion (11).

10. The charging terminal according to claim 9, characterized in that: The mating part (11) is a copper part or a copper alloy part, and the welding part (12) is an aluminum part, a copper part, a copper alloy part or an aluminum alloy part.

11. The charging terminal according to claim 9, characterized in that: A plurality of separation grooves (11c) are formed on the peripheral wall of the mating portion (11), and the plurality of separation grooves (11c) are spaced apart in the circumferential direction of the mating portion (11) and extend along the axial direction of the mating portion (11) to the front end surface of the mating portion (11), so that the peripheral wall of the mating portion (11) is divided into a plurality of cantilever portions (11d), and the plurality of cantilever portions (11d) are used to electrically contact the mating terminals inserted into the mating portion (11).

12. The charging terminal according to claim 11, characterized in that: The extension length of the separation groove (11c) and the cantilever portion (11d) in the axial direction of the mating portion (11) is greater than half the axial length of the mating portion (11) and less than the axial length of the mating portion (11).

13. The charging terminal according to claim 9, characterized in that: The welding portion (12) has a columnar front end (121) and a flat rear end (122), the columnar front end (121) of the welding portion (12) is welded to the rear end of the matching portion (11), and the flat rear end (122) of the welding portion (12) is suitable for welding to the conductor of the cable.

14. A charging device, characterized in that: include: case; and The charging terminal (1) according to any one of claims 1 to 13 is arranged in the housing.

15. The charging device according to claim 14, characterized in that: Also includes: A cable, one end of which extends into the housing and is welded to the flat rear end (122) of the welding portion (12) of the charging terminal (1).

16. The charging device according to claim 14, wherein: The charging device is a charging base or a charging gun.

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