Charging terminal and charging device
The charging terminal design with a copper mating part and aluminum welding part, featuring elastic arms and splicing edges, addresses high manufacturing costs and current capacity issues, enabling efficient and cost-effective electric vehicle charging.
Patent Information
- Authority / Receiving Office
- GB · GB
- Patent Type
- Applications
- Current Assignee / Owner
- TYCO ELECTRONICS (SUZHOU) CO LTD
- Filing Date
- 2025-11-20
- Publication Date
- 2026-07-22
Smart Images
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Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of Chinese Patent Application No. CN202422880084.4 filed on November 25, 2024 in the State Intellectual Property Office of China, the whole disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a charging terminal and a charging device comprising the charging terminal. Description of the Related Art In the prior art, a charging terminal of a charging dock used for an electric vehicle is usually an integral machined part. The current carrying capacity of machined terminal is high, but the manufacturing cost is high and it does not have a competitive advantage. In order to reduce costs, in the prior art, a stamped charging terminal is commonly used, but the current carrying capacity of the stamped charging terminal is poor. However, in order to shorten the charging time, the charging current of an electric vehicle is getting higher and higher, with a maximum charging current of up to 1000A. The existing stamped charging terminal cannot meet this requirement. SUMMARY OF THE INVENTION The present invention has been made to overcome or alleviate at least one aspect of the above mentioned disadvantages. According to an aspect of the present invention, there is provided a charging terminal. The charging terminal comprises: a mating part, cylindrical in shape, used or configured for mating with a columnar mating terminal; and a welding part, used or configured for welding onto a cable or having a cable welded to it or thereto or to the welding part to electrically connect with the cable. The mating part is an integral stamped part, the welding part is an integral cold heading part, and the front end of the welding part is welded, riveted or crimped to the rear end of the mating part. According to an exemplary embodiment of the present invention, the mating part is made of copper or copper alloy, and the welding part is made of aluminum, copper, copper alloy, or aluminum alloy. According to another exemplary embodiment of the present invention, multiple elastic arms are formed on the peripheral wall of the mating part, which are distributed at intervals in the circumferential direction of the mating part for electrical contact with the mating terminal inserted into the mating part. According to another exemplary embodiment of the present invention, multiple windows are formed on the peripheral wall of the mating part, and the multiple elastic arms are respectively suspended in the multiple windows; the rear end of the elastic arm is connected to the rear side edge of the window, and the front end of the elastic arm protrudes or slightly protrudes into the or an inner cavity of the mating part to make electrical contact with the inserted mating terminal. Each elastic arm may be suspended in a respective window. According to another exemplary embodiment of the present invention, the mating part has two splicing edges extending along its axal direction, a protrusion is formed on one of the two splicing edges, and a groove is formed on the other to engage with the protrusion, in order to splice the two splicing edges together. According to another exemplary embodiment of the present invention, the protrusion and the groove are in the shape of a dovetail, T or Q, or the protrusion has an enlarged head and the groove is shaped to fit or closely fit around the enlarged head to engage the enlarged head. According to another exemplary embodiment of the present invention, two protrusions are formed on one splicing edge of the mating part, and the two protrusions are respectively close to or adjacent the front and rear ends of the mating part; two grooves are formed on the other splicing edge of the mating part, and the two grooves are respectively close to or adjacent the front and rear ends of the mating part. According to another exemplary embodiment of the present invention, two protrusions are formed on one splicing edge of the mating part, and one said protrusion is close to or adjacent the front end of the mating part and the other said protrusion is close to or adjacent the rear end of the mating part; two grooves are formed on the other splicing edge of the mating part, and one said groove is close to or adjacent the front end of the mating part and the other said groove is close to or adjacent the rear end of the mating part. The grooves may be formed on the other splicing edge to engage with the respective protrusions, in order to splice the two splicing edges together. According to another exemplary embodiment of the present invention, each protrusion and each groove are in the shape of a dovetail, T or Q, or each protrusion has an enlarged head and each groove is shaped to fit or closely fit around the enlarged head to engage the enlarged head. According to another exemplary embodiment of the present invention, the welding part has a cylindrical front end and a flat rear end, the cylindrical front end of the welding part is welded to the rear end of the mating part, and the flat rear end of the welding part is suitable for welding to the conductor of the cable or having the conductor of the cable welded to it or thereto or to the flat rear end. According to another aspect of the present invention, there is provided a charging terminal. The charging terminal comprises: a mating part, cylindrical in shape, used or configured for mating with a columnar mating terminal; and a welding part, used or configured for welding onto a cable or having a cable welded to it or thereto or to the welding part to electrically connect with the cable. The mating part is an integral cold heading part, the welding part is an integral cold heading part, and the front end of the welding part is welded, riveted or crimped to the rear end of the mating part. According to an exemplary embodiment of the present invention, the mating part is made of copper or copper alloy, and the welding part is made of aluminum, copper, copper alloy, or aluminum alloy. According to another exemplary embodiment of the present invention, multiple partition grooves are formed on the peripheral wall of the mating part, which are distributed at intervals in the circumferential direction of the mating part and extend along the axial direction of the mating part all the way to the front end face of the mating part, so that the peripheral wall of the mating part is divided into multiple cantilever parts for electrical contact with the mating terminal inserted into the mating part. According to another exemplary embodiment of the present invention, the extension length of the partition groove and the cantilever part in the axial direction of the mating part is greater than half of the axial length of the mating part and less than the axial length of the mating part. According to another exemplary embodiment of the present invention, the welding part has a cylindrical front end and a flat rear end, the cylindrical front end of the welding part is welded to the rear end of the mating part, and the flat rear end of the welding part is suitable for welding to the conductor of the cable or having the conductor of the cable welded to it or thereto or to the flat rear end. According to another aspect of the present invention, there is provided a charging device, the charging device comprises: a housing; and the above charging terminal provided in the housing. According to an exemplary embodiment of the present invention, 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 part of the charging terminal. According to another exemplary embodiment of the present invention, the charging device is a charging dock or a charging gun. In the aforementioned exemplary embodiments according to the present invention, at least a part of the charging terminal is a cold heading component, which not only has low manufacturing cost but also can carry a large charging current. BRIEF DESCRIPTION OF THE DRAWINGS The above and other features of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings, in which: Figure 1 shows an illustrative perspective view of a charging terminal according to an exemplary first embodiment of the present invention when viewed from the front side; Figure 2 shows an illustrative exploded view of the charging terminal according to the exemplary first embodiment of the present invention when viewed from the front side; Figure 3 shows an illustrative perspective view of the charging terminal according to the exemplary first embodiment of the present invention when viewed from the rear side; Figure 4 shows an illustrative exploded view of the charging terminal according to the exemplary first embodiment of the present invention when viewed from the rear side; Figure 5 shows an illustrative perspective view of the charging terminal according to the exemplary second embodiment of the present invention when viewed from the front side; Figure 6 shows an illustrative exploded view of the charging terminal according to the exemplary second embodiment of the present invention when viewed from the front side; Figure 7 shows an illustrative perspective view of the charging terminal according to the exemplary second embodiment of the present invention when viewed from the rear side; and Figure 8 shows an illustrative exploded view of the charging terminal according to the exemplary second embodiment of the present invention when viewed from the rear. DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. 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 schematically shown in order to simplify the drawing. According to a general concept of the present invention, there is provided a charging terminal. The charging terminal comprises: a mating part, cylindrical in shape, used for mating with a columnar mating terminal; and a welding part, used for welding onto a cable to electrically connect with the cable. The mating part is an integral stamped part, the welding part is an integral cold heading part, and the front end of the welding part is welded, riveted or crimped to the rear end of the mating part. According to another general concept of the present invention, there is provided a charging terminal. The charging terminal comprises: a mating part, cylindrical in shape, used for mating with a columnar mating terminal; and a welding part, used for welding onto a cable to electrically connect with the cable. The mating part is an integral cold heading part, the welding part is an integral cold heading part, and the front end of the welding part is welded, riveted or crimped to the rear end of the mating part. According to another general concept of the present invention, there is provided a charging device, the charging device comprises: a housing; and the above charging terminal provided in the housing. First Embodiment Figures 1 to 4 show a first embodiment of a charging terminal according to the present invention. Among them, Figure 1 shows an illustrative perspective view of the charging terminal 1 according to the exemplary first embodiment of the present invention when viewed from the front side; Figure 2 shows an illustrative exploded view of the charging terminal 1 according to the exemplary first embodiment of the present invention when viewed from the front side; Figure 3 shows an illustrative perspective view of the charging terminal 1 according to the exemplary first embodiment of the present invention when viewed from the rear side; Figure 4 shows an illustrative exploded view of the charging terminal 1 according to the exemplary first embodiment of the present invention when viewed from the rear. As shown in Figures 1 to 4, in an exemplary embodiment of the present invention, a charging terminal 1 is disclosed. The charging terminal 1 includes a mating part 11 and a welding part 12. The mating part 11 is a hollow cylindrical shape, used for mating with a columnar mating terminal (not shown). The welding part 12 is used to weld to a cable (not shown) for electrical connection with the cable. The mating part 11 is an integral stamped part, and the welding part 12 is an integral cold heading part, and the front end of the welding part 12 is welded, riveted or crimped to the rear end of the mating part 11. As shown in Figures 1 to 4, in the illustrated embodiment, the mating part 11 can be a copper component or a copper alloy component, and the welding part 12 can be an aluminum component, a copper component, a copper alloy component, or an aluminum alloy component. As shown in Figures 1 to 4, in the illustrated embodiment, multiple elastic arms 111 are formed on the peripheral wall of the mating part 11, and the multiple elastic arms 111 are distributed at intervals in the circumferential direction of the mating part 11 for electrical contact with the mating terminal inserted into the mating part 11. As shown in Figures 1 to 4, in the illustrated embodiment, multiple windows 112 are formed on the peripheral wall of the mating part 11, and the multiple elastic arms 111 are respectively suspended in the multiple windows 112. The rear end of the elastic arm 111 is connected to the rear side edge of the window 112, and the front end of the elastic arm 111 slightly protrudes into the inner cavity of the mating part 11 to make electrical contact with the inserted mating terminal. As shown in Figures 1 to 4, in the illustrated embodiment, the mating part 11 has two splicing edges 110 extending along its axial direction. A protrusion Ila is formed on one of the two splicing edges 110, and a groove 11b is formed on the other to engage with the protrusion Ila, in order to splice the two splicing edges 110 together. As shown in Figures 1 to 4, in the illustrated embodiment, the protrusions Ila and grooves 11b on the splicing edge 110 are in the shape of a dovetail, T, or Q. In this way, it can prevent the two splicing edges 110 from being detached in the circumferential direction of the mating part 11. As shown in Figures 1 to 4, in the illustrated embodiment, two protrusions Ila are formed on one splicing edge 110 of the mating part 11, and the two protrusions Ila are respectively close to the front and rear ends of the mating part 11. There are two grooves 11b formed on the other splicing edge 110 of the mating part 11, which are respectively close to the front and rear ends of the mating part 11. As shown in Figures 1 to 4, in the illustrated embodiment, the welding part 12 has a cylindrical front end 121 and a flat rear end 122. The cylindrical front end 121 of the welding part 12 is welded to the rear end of the mating part 11, and the flat rear end 122 of the welding part 12 is suitable for welding to the conductor of the cable. As shown in Figures 1 to 4, 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 set in the housing. As shown in Figures 1 to 4, in the illustrated embodiment, the charging device further comprises a cable (not shown), one end of which extends into the housing and is welded to the flat rear end 122 of the welding part 12 of the charging terminal 1. As shown in Figures 1 to 4, in the illustrated embodiment, the charging device is a charging dock or a charging gun. Second Embodiment Figures 5 to 8 show a second embodiment of the charging terminal according to the present invention. Among them, Figure 5 shows an illustrative perspective view of the charging terminal 1 according to the exemplary second embodiment of the present invention when viewed from the front side; Figure 6 shows an illustrative exploded view of the charging terminal 1 according to the exemplary second embodiment of the present invention when viewed from the front side; Figure 7 shows an illustrative perspective view of the charging terminal 1 according to the exemplary second embodiment of the present invention when viewed from the rear side; Figure 8 shows an illustrative exploded view of the charging terminal 1 according to the exemplary second embodiment of the present invention when viewed from the rear. As shown in Figures 5 to 8, in an exemplary embodiment of the present invention, a charging terminal 1 is disclosed. The charging terminal 1 includes a mating part 11 and a welding part 12. The mating part 11 is a hollow cylindrical shape, used for mating with a columnar mating terminal (not shown). The welding part 12 is used to weld to a cable (not shown) for electrical connection with the cable. The mating part 11 is an integral cold heading component, and the welding part 12 is an integral cold heading component, and the front end of welding part 12 is welded, riveted, or crimped to the rear end of mating part 11. As shown in Figures 5 to 8, in the illustrated embodiment, the mating part 11 can be a copper component or a copper alloy component, and the welding part 12 can be an aluminum component, a copper component, a copper alloy component, or an aluminum alloy component. As shown in Figures 5 to 8, in the illustrated embodiment, multiple partition grooves 11c are formed on the peripheral wall of the mating part 11, which are distributed at intervals in the circumferential direction of the mating part 11 and extend along the axial direction of the mating part 11 all the way to the front end face of the mating part 11, so that the peripheral wall of the mating part 11 is divided into multiple cantilever parts lid, which are used to make electrical contact with the mating terminal inserted into the mating part 11. As shown in Figures 5 to 8, in the illustrated embodiment, the extension length of the partition groove 11c and the cantilever part lid in the axial direction of the mating part 11 is greater than half of the axial length of the mating part 11 and less than the axial length of the mating part 11. As shown in Figures 5 to 8, in the illustrated embodiment, the welding part 12 has a cylindrical front end 121 and a flat rear end 122. The cylindrical front end 121 of the welding part 12 is welded to the rear end of the mating part 11, and the flat rear end 122 of the welding part 12 is suitable for welding to the conductor of the cable. As shown in Figures 5 to 8, 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 set in the housing. As shown in Figures 5 to 8, in the illustrated embodiment, the charging device further comprises a cable (not shown), one end of which extends into the housing and is welded to the flat rear end 122 of the welding part 12 of the charging terminal 1. As shown in Figures 5 to 8, in the illustrated embodiment, the charging device is a charging dock or a charging gun. It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle. Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents. As used herein, an element recited in the singular and proceeded with the word "a" or "an" should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to "one embodiment" of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments "comprising" or "having" an element or a plurality of elements having a particular property may include additional such elements not having that property.
Claims
1. A charging terminal, comprising:a mating part (11), cylindrical in shape, used for mating with a columnar mating terminal; anda welding part (12), used for welding onto a cable to electrically connect with the cable,wherein the mating part (11) is an integral stamped part or an integral cold heading part, the welding part (12) is an integral cold heading part, and the front end of the welding part (12) is welded, riveted or crimped to the rear end of the mating part (11).
2. The charging terminal according to claim 1,wherein the mating part (11) is an integral stamped part.
3. The charging terminal according to claim 2,wherein multiple elastic arms (111) are formed on the peripheral wall of the mating part (11), which are distributed at intervals in the circumferential direction of the mating part (11) for electrical contact with the mating terminal inserted into the mating part (11).
4. The charging terminal according to claim 3,wherein multiple windows (112) are formed on the peripheral wall of the mating part (11), and the multiple elastic arms (111) are respectively suspended in the multiple windows (112);wherein the rear end of the elastic arm (111) is connected to the rear side edge of the window (112), and the front end of the elastic arm (111) slightly protrudes into the inner cavity of the mating part (11) to make electrical contact with the inserted mating terminal.
5. The charging terminal according to claim 2, 3 or 4,wherein the mating part (11) has two splicing edges (110) extending along its axialdirection, a protrusion (Ila) is formed on one of the two splicing edges (110), and a groove (11b) is formed on the other to engage with the protrusion (Ila), in order to splice the two splicing edges (110) together.
6. The charging terminal according to claim 5,wherein the protrusion (Ila) and the groove (11b) are in the shape of a dovetail, T or Q.
7. The charging terminal according to claim 5,wherein two protrusions (Ila) are formed on one splicing edge (110) of the mating part (11), and the two protrusions (Ila) are respectively close to the front and rear ends of the mating part (11);wherein two grooves (11b) are formed on the other splicing edge (110) of the mating part (11), and the two grooves (11b) are respectively close to the front and rear ends of the mating part (11).
8. A charging terminal according to claim 1,wherein the mating part (11) is an integral cold heading part.
9. The charging terminal according to claim 8,wherein multiple partition grooves (11c) are formed on the peripheral wall of the mating part (11), which are distributed at intervals in the circumferential direction of the mating part (11) and extend along the axial direction of the mating part (11) all the way to the front end face of the mating part (11), so that the peripheral wall of the mating part (11) is divided into multiple cantilever parts (lid) for electrical contact with the mating terminal inserted into the mating part (11).
10. The charging terminal according to claim 9,wherein the extension length of the partition groove (11c) and the cantilever part (lid) in the axial direction of the mating part (11) is greater than half of the axial lengthof the mating part (11) and less than the axial length of the mating part (11).
11. The charging terminal according to any preceding claim,wherein the mating part (11) is made of copper or copper alloy, and the welding part (12) is made of aluminum, copper, copper alloy, or aluminum alloy.
12. The charging terminal according to any preceding claim,wherein the welding part (12) has a cylindrical front end (121) and a flat rear end (122), the cylindrical front end (121) of the welding part (12) is welded to the rear end of the mating part (11), and the flat rear end (122) of the welding part (12) is suitable for welding to the conductor of the cable.
13. A charging device, comprising:a housing; andthe charging terminal (1) according to any preceding claim which is provided in the housing.
14. The charging device according to claim 13, further comprising:a cable, one end of which extends into the housing and is welded to the flat rear end (122) of the welding part (12) of the charging terminal (1).
15. The charging device according to claim 13 or 14, wherein the charging device is a charging dock or a charging gun.