Terminal, electric connection assembly and electric connection device

Abstract

The utility model discloses a terminal, an electric connection assembly and an electric connection device. The terminal comprises an electric contact part which is used for being in electric contact with a mating terminal; and the electric connection part is used for being electrically connected with the aluminum wire. The electric contact part and the electric connection part are connected into a whole, the electric contact part is a copper part or a copper alloy part, and the electric connection part is an aluminum part or an aluminum alloy part. In each exemplary embodiment of the utility model, the terminal comprises an electric contact part made of copper or copper alloy and an electric connection part made of aluminum or aluminum alloy. The electric contact part made of the copper or the copper alloy can be in reliable and stable electric contact with the matched terminal, and the electric connection part made of the aluminum or the aluminum alloy can be in reliable and stable electric connection with the aluminum wire, so that the problem of electrochemical corrosion between the copper terminal and the aluminum wire can be effectively avoided.

Description

Technical Field

[0001] This utility model relates to a terminal, including an electrical connection assembly of the terminal and an electrical connection device including the terminal. Background Technology

[0002] In current technologies, to improve the charging speed of new energy vehicles, the charging current needs to be increased to over 600A, and may even reach 1000A in the future. To increase the current-carrying capacity and reduce heat generation of copper conductors, the cross-sectional size of the copper conductors needs to be increased, which leads to a sharp rise in cost. To reduce costs, existing technologies use aluminum conductors instead of traditional copper conductors. However, the electrical connection between aluminum conductors and copper terminals presents some insurmountable technical problems, such as electrochemical corrosion between the copper and aluminum materials. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a terminal is provided. The terminal includes: an electrical contact portion for electrical contact with a mating terminal; and an electrical connection portion for electrical connection with an aluminum wire. The electrical contact portion and the electrical connection portion are integrally connected; the electrical contact portion is made of copper or a copper alloy, and the electrical connection portion is made of aluminum or an aluminum alloy.

[0005] According to an exemplary embodiment of the present invention, the electrical contact portion has at least one elastic arm for making electrical contact with the mating terminal.

[0006] According to another exemplary embodiment of the present invention, the electrical contact portion has at least one pair of elastic arms, each pair of elastic arms being used to clamp a mating terminal inserted between them for electrical contact with the mating terminal.

[0007] According to another exemplary embodiment of the present invention, the electrical contact portion includes a peripheral wall surrounding an insertion cavity, on which an elastic arm is formed, the elastic arm being used for electrical contact with a mating terminal inserted into the insertion cavity.

[0008] According to another exemplary embodiment of the present invention, the electrical contact portion is columnar or tongue-shaped and adapted to be inserted into the mating terminal of the female type to make electrical contact with the contact spring of the mating terminal.

[0009] According to another exemplary embodiment of the present invention, the electrical contact portion of the terminal is an integral stamped part; and / or the electrical connection portion of the terminal is an integral stamped part.

[0010] According to another exemplary embodiment of the present invention, the electrical connection portion of the terminal is adapted to be soldered to the connection end of the aluminum wire.

[0011] According to another exemplary embodiment of the present invention, the electrical connection portion of the terminal has a flat weld portion adapted to be welded to the connection end of the aluminum wire.

[0012] According to another exemplary embodiment of the present invention, the electrical connection portion of the terminal is adapted to be crimped onto the connection end of the aluminum wire.

[0013] According to another exemplary embodiment of the present invention, the electrical connection portion of the terminal has a U-shaped crimp portion, which is adapted to be crimped onto the connection end of the aluminum wire.

[0014] According to another exemplary embodiment of the present invention, the U-shaped crimping portion includes a pair of first crimping wings, which are used to crimp onto the connecting end of the aluminum wire.

[0015] According to another exemplary embodiment of the present invention, the U-shaped crimping portion further includes a pair of second crimping wings, which are used to crimp onto the outer insulation layer of the aluminum wire.

[0016] According to another exemplary embodiment of the present invention, the electrical connection portion of the terminal is adapted to be welded, crimped, heat-fused, riveted, or bolted to the connection end of the aluminum wire.

[0017] According to another exemplary embodiment of the present invention, the electrical contact portion is welded, heat-fused, cold-rolled, riveted, crimped, or bolted to the electrical connection portion to connect the electrical contact portion and the electrical connection portion into one unit.

[0018] According to another exemplary embodiment of the present invention, the electrical contact portion has a U-shaped rear end, the electrical connection portion has a U-shaped front end, and the U-shaped rear end of the electrical contact portion is welded or heat-fused to the U-shaped front end of the electrical connection portion to connect the electrical contact portion and the electrical connection portion into one unit.

[0019] According to another exemplary embodiment of the present invention, a first serration is formed on the electrical contact portion and a second serration is formed on the electrical connection portion. The first serration and the second serration mesh and are welded, hot-melted, or cold-rolled together to connect the electrical contact portion and the electrical connection portion into one unit.

[0020] According to another aspect of the present invention, an electrical connection assembly is provided. The electrical connection assembly includes: the aforementioned terminal; and an aluminum wire electrically connected to the electrical connection portion of the terminal.

[0021] According to another aspect of the present invention, an electrical connection device is provided. The electrical connection device includes: an insulating housing; the aforementioned terminal, inserted into the insulating housing; and an aluminum wire electrically connected to the electrical connection portion of the terminal and led out from the insulating housing.

[0022] According to an exemplary embodiment of the present invention, the electrical connection device is a connector, a charging socket, or a charging gun, and the terminal is a power terminal for transmitting charging current.

[0023] According to another aspect of the present invention, a terminal manufacturing method is provided. The terminal manufacturing method includes the following steps:

[0024] Provide a first metal plate and a second metal plate;

[0025] One side of the first metal plate and one side of the second metal plate are joined together to form a metal sheet;

[0026] The metal sheet is stamped to form a terminal strip; and

[0027] Cut the terminal strip to obtain multiple terminals.

[0028] The first metal plate is a copper plate or a copper alloy plate, and the electrical contact portion of the terminal for electrical contact with the mating terminal is made of the first metal plate.

[0029] The second metal plate is an aluminum plate, and the electrical connection portion of the terminal for electrical connection with the aluminum wire is made of the second metal plate.

[0030] According to an exemplary embodiment of the present invention, the terminal strip has a carrier section connected to the electrical connection portion of the terminal for positioning and conveying the terminal, the carrier section being made of the second metal plate.

[0031] According to another exemplary embodiment of the present invention, one side of the first metal plate and one side of the second metal plate are welded, hot-melted, or cold-rolled together.

[0032] According to another exemplary embodiment of the present invention, a first serration is formed on one side of the first metal plate and a second serration is formed on one side of the second metal plate. The first serration and the second serration mesh and are welded, hot-melted or cold-rolled together.

[0033] In the foregoing exemplary embodiments of the present invention, the terminal includes an electrical contact portion made of copper or a copper alloy and an electrical connection portion made of aluminum or an aluminum alloy. The copper or copper alloy electrical contact portion can reliably and stably make electrical contact with mating terminals, and the aluminum or aluminum alloy electrical connection portion can reliably and stably connect with aluminum wires, thereby effectively avoiding electrochemical corrosion problems between the copper terminals and the aluminum wires.

[0034] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0035] Figure 1 A perspective view of a terminal according to an exemplary first embodiment of the present invention is shown;

[0036] Figure 2 This diagram shows an exploded view of a terminal according to an exemplary first embodiment of the present invention;

[0037] Figure 3 A perspective view of a terminal according to an exemplary second embodiment of the present invention is shown;

[0038] Figure 4 An exploded view of a terminal according to an exemplary second embodiment of the present invention is shown;

[0039] Figure 5 A perspective view of a terminal according to an exemplary third embodiment of the present invention is shown;

[0040] Figure 6 An exploded view of a terminal according to an exemplary third embodiment of the present invention is shown;

[0041] Figure 7 A perspective view of a terminal according to an exemplary fourth embodiment of the present invention is shown;

[0042] Figure 8 An exploded view of a terminal according to an exemplary fourth embodiment of the present invention is shown;

[0043] Figure 9 This diagram shows an exemplary first metal plate and a second metal plate according to the present invention;

[0044] Figure 10 The display will Figure 9 The diagram shows the first and second metal plates connected together.

[0045] Figure 11This shows a perspective view of another exemplary first metal plate and second metal plate according to the present invention;

[0046] Figure 12 The display will Figure 11 The diagram shows the first and second metal plates connected together.

[0047] Figure 13 Displayed through stamping Figure 10 or Figure 12 An exemplary schematic diagram of a terminal strip made from a metal sheet is shown.

[0048] Figure 14 Displayed through stamping Figure 10 or Figure 12 Another exemplary schematic diagram of a terminal strip made from a metal sheet is shown. Detailed Implementation

[0049] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0050] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0051] According to a general technical concept of this utility model, a terminal is provided. The terminal includes: an electrical contact portion for electrical contact with a mating terminal; and an electrical connection portion for electrical connection with an aluminum wire. The electrical contact portion and the electrical connection portion are connected as a single unit, wherein the electrical contact portion is made of copper or a copper alloy, and the electrical connection portion is made of aluminum or an aluminum alloy.

[0052] According to another general technical concept of this utility model, an electrical connection assembly is provided. The electrical connection assembly includes: the aforementioned terminal; and an aluminum wire electrically connected to the electrical connection portion of the terminal.

[0053] According to another general technical concept of this utility model, an electrical connection device is provided. The electrical connection device includes: an insulating shell; the aforementioned terminal, inserted into the insulating shell; and an aluminum wire, electrically connected to the electrical connection portion of the terminal and led out from the insulating shell.

[0054] According to another overall technical concept of this utility model, a terminal manufacturing method is provided. The terminal manufacturing method includes the following steps: providing a first metal plate and a second metal plate; connecting one side of the first metal plate and one side of the second metal plate together to form a metal sheet; stamping the metal sheet to form a terminal strip; and cutting the terminal strip to obtain a plurality of terminals. The first metal plate is a copper plate or a copper alloy plate, and the electrical contact portion of the terminal for electrical contact with a mating terminal is made of the first metal plate; the second metal plate is an aluminum plate, and the electrical connection portion of the terminal for electrical connection with an aluminum wire is made of the second metal plate.

[0055] First Embodiment

[0056] Figure 1 and Figure 2 A first embodiment according to the present invention is shown. In this embodiment, Figure 1 A perspective view of a terminal according to an exemplary first embodiment of the present invention is shown;

[0057] Figure 2 This diagram shows an exploded view of a terminal according to an exemplary first embodiment of the present invention.

[0058] like Figure 1 and Figure 2 As shown, in an exemplary embodiment of this utility model, a terminal 1 is disclosed. The terminal 1 includes an electrical contact portion 11 and an electrical connection portion 12. The electrical contact portion 11 is used for electrical contact with a mating terminal (not shown). The electrical connection portion 12 is used for electrical connection with an aluminum wire (not shown). The electrical contact portion 11 and the electrical connection portion 12 are connected as a single unit; the electrical contact portion 11 is made of copper or a copper alloy, and the electrical connection portion 12 is made of aluminum or an aluminum alloy.

[0059] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one elastic arm 111 for making electrical contact with the mating terminal.

[0060] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one pair of elastic arms 111, each pair of elastic arms 111 being used to clamp the mating terminal inserted between them for electrical contact with the mating terminal.

[0061] like Figure 1 and Figure 2As shown, in the illustrated embodiment, the electrical contact portion 11 includes a peripheral wall 110 surrounding the insertion cavity, and an elastic arm 111 is formed on the peripheral wall 110. The elastic arm 111 is used to make electrical contact with the mating terminal of the insertion cavity of the electrical contact portion 11.

[0062] However, the present invention is not limited to the embodiments shown in the figures. For example, in another exemplary embodiment of the present invention, terminal 1 can be a male terminal, and electrical contact portion 11 can be columnar or tongue-shaped and adapted to be inserted into the female mating terminal to make electrical contact with the contact spring (not shown) of the mating terminal.

[0063] like Figure 1 and Figure 2 As shown in the illustrated embodiment, the electrical contact portion 11 of the terminal is a one-piece stamped part. The electrical connection portion 12 of the terminal is also a one-piece stamped part. This improves manufacturing efficiency and reduces production costs.

[0064] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal is adapted to be soldered to the connection end of the aluminum wire.

[0065] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal has a flat solder portion 120, which is adapted to be soldered to the connection end of the aluminum wire.

[0066] like Figure 1 and Figure 2 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 can be welded, heat-fused, cold-rolled, riveted, crimped, or bolted to the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0067] like Figure 1 and Figure 2 As shown in the illustrated embodiment, the electrical contact 11 has a U-shaped rear end 112 and the electrical connection 12 has a U-shaped front end 122. The U-shaped rear end 112 of the electrical contact 11 is welded or heat-fused to the U-shaped front end 122 of the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0068] like Figure 1 and Figure 2 As shown, in another exemplary embodiment of this utility model, an electrical connection assembly is also disclosed. The electrical connection assembly includes: a terminal 1 and an aluminum wire (not shown). The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal.

[0069] like Figure 1 and Figure 2As shown, in another exemplary embodiment of this utility model, an electrical connection device is also disclosed. The electrical connection device includes: an insulating shell (not shown), a terminal 1, and an aluminum wire. The terminal 1 is inserted into the insulating shell. The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal and led out from the insulating shell.

[0070] like Figure 1 and Figure 2 As shown in the illustrated embodiment, the electrical connection device can be a connector, a charging socket, or a charging gun, and the terminal is a power terminal used to transmit charging current.

[0071] Second Embodiment

[0072] Figure 3 and Figure 4 A first embodiment according to the present invention is shown. In this embodiment, Figure 3 A perspective view of a terminal according to an exemplary second embodiment of the present invention is shown;

[0073] Figure 4 An exploded view of a terminal according to an exemplary second embodiment of the present invention is shown.

[0074] like Figure 3 and Figure 4 As shown, in an exemplary embodiment of this utility model, a terminal 1 is disclosed. The terminal 1 includes an electrical contact portion 11 and an electrical connection portion 12. The electrical contact portion 11 is used for electrical contact with a mating terminal (not shown). The electrical connection portion 12 is used for electrical connection with an aluminum wire (not shown). The electrical contact portion 11 and the electrical connection portion 12 are connected as a single unit; the electrical contact portion 11 is made of copper or a copper alloy, and the electrical connection portion 12 is made of aluminum or an aluminum alloy.

[0075] like Figure 3 and Figure 4 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one elastic arm 111 for making electrical contact with the mating terminal.

[0076] like Figure 3 and Figure 4 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one pair of elastic arms 111, each pair of elastic arms 111 being used to clamp the mating terminal inserted between them for electrical contact with the mating terminal.

[0077] like Figure 3 and Figure 4 As shown, in the illustrated embodiment, the electrical contact portion 11 includes a peripheral wall 110 surrounding the insertion cavity, and an elastic arm 111 is formed on the peripheral wall 110. The elastic arm 111 is used to make electrical contact with the mating terminal of the insertion cavity of the electrical contact portion 11.

[0078] However, the present invention is not limited to the embodiments shown in the figures. For example, in another exemplary embodiment of the present invention, terminal 1 can be a male terminal, and electrical contact portion 11 can be columnar or tongue-shaped and adapted to be inserted into the female mating terminal to make electrical contact with the contact spring (not shown) of the mating terminal.

[0079] like Figure 3 and Figure 4 As shown in the illustrated embodiment, the electrical contact portion 11 of the terminal is a one-piece stamped part. The electrical connection portion 12 of the terminal is also a one-piece stamped part. This improves manufacturing efficiency and reduces production costs.

[0080] like Figure 3 and Figure 4 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal is adapted to be soldered to the connection end of the aluminum wire.

[0081] like Figure 3 and Figure 4 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal has a flat solder portion 120, which is adapted to be soldered to the connection end of the aluminum wire.

[0082] like Figure 3 and Figure 4 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 can be welded, heat-fused, cold-rolled, riveted, crimped, or bolted to the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0083] like Figure 3 and Figure 4 As shown in the illustrated embodiment, a first serration 113 is formed on the electrical contact portion 11, and a second serration 123 is formed on the electrical connection portion 12. The first serration 113 and the second serration 123 mesh and are welded, heat-fused, or cold-rolled together to connect the electrical contact portion 11 and the electrical connection portion 12 into one unit.

[0084] like Figure 3 and Figure 4 As shown, in another exemplary embodiment of this utility model, an electrical connection assembly is also disclosed. The electrical connection assembly includes: a terminal 1 and an aluminum wire (not shown). The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal.

[0085] like Figure 3 and Figure 4As shown, in another exemplary embodiment of this utility model, an electrical connection device is also disclosed. The electrical connection device includes: an insulating shell (not shown), a terminal 1, and an aluminum wire. The terminal 1 is inserted into the insulating shell. The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal and led out from the insulating shell.

[0086] like Figure 3 and Figure 4 As shown in the illustrated embodiment, the electrical connection device can be a connector, a charging socket, or a charging gun, and the terminal is a power terminal used to transmit charging current.

[0087] Third Embodiment

[0088] Figure 5 and Figure 6 A third embodiment according to the present invention is shown. In this embodiment, Figure 5 A perspective view of a terminal according to an exemplary third embodiment of the present invention is shown;

[0089] Figure 6 This diagram shows an exploded view of a terminal according to an exemplary third embodiment of the present invention.

[0090] like Figure 5 and Figure 6 As shown, in an exemplary embodiment of this utility model, a terminal 1 is disclosed. The terminal 1 includes an electrical contact portion 11 and an electrical connection portion 12. The electrical contact portion 11 is used for electrical contact with a mating terminal (not shown). The electrical connection portion 12 is used for electrical connection with an aluminum wire (not shown). The electrical contact portion 11 and the electrical connection portion 12 are connected as a single unit; the electrical contact portion 11 is made of copper or a copper alloy, and the electrical connection portion 12 is made of aluminum or an aluminum alloy.

[0091] like Figure 5 and Figure 6 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one elastic arm 111 for making electrical contact with the mating terminal.

[0092] like Figure 5 and Figure 6 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one pair of elastic arms 111, each pair of elastic arms 111 being used to clamp the mating terminal inserted between them for electrical contact with the mating terminal.

[0093] like Figure 5 and Figure 6 As shown, in the illustrated embodiment, the electrical contact portion 11 includes a peripheral wall 110 surrounding the insertion cavity, and an elastic arm 111 is formed on the peripheral wall 110. The elastic arm 111 is used to make electrical contact with the mating terminal of the insertion cavity of the electrical contact portion 11.

[0094] However, the present invention is not limited to the embodiments shown in the figures. For example, in another exemplary embodiment of the present invention, terminal 1 can be a male terminal, and electrical contact portion 11 can be columnar or tongue-shaped and adapted to be inserted into the female mating terminal to make electrical contact with the contact spring (not shown) of the mating terminal.

[0095] like Figure 5 and Figure 6 As shown in the illustrated embodiment, the electrical contact portion 11 of the terminal is a one-piece stamped part. The electrical connection portion 12 of the terminal is also a one-piece stamped part. This improves manufacturing efficiency and reduces production costs.

[0096] like Figure 5 and Figure 6 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal is adapted to be crimped onto the connection end of the aluminum wire.

[0097] like Figure 5 and Figure 6 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal has a U-shaped crimp portion 121, which is adapted to be crimped onto the connection end of the aluminum wire.

[0098] like Figure 5 and Figure 6 As shown in the illustrated embodiment, the U-shaped crimping portion 121 includes a pair of first crimping wings 121a, which are used to crimp onto the connection end of the aluminum wire.

[0099] like Figure 5 and Figure 6 As shown in the illustrated embodiment, the U-shaped crimp portion 121 further includes a pair of second crimp wings 121b, which are used to crimp onto the outer insulation layer of the aluminum wire.

[0100] like Figure 5 and Figure 6 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 can be welded, heat-fused, cold-rolled, riveted, crimped, or bolted to the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0101] like Figure 5 and Figure 6 As shown in the illustrated embodiment, the electrical contact 11 has a U-shaped rear end 112 and the electrical connection 12 has a U-shaped front end 122. The U-shaped rear end 112 of the electrical contact 11 is welded or heat-fused to the U-shaped front end 122 of the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0102] like Figure 5 and Figure 6 As shown, in another exemplary embodiment of this utility model, an electrical connection assembly is also disclosed. The electrical connection assembly includes: a terminal 1 and an aluminum wire (not shown). The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal.

[0103] like Figure 5 and Figure 6 As shown, in another exemplary embodiment of this utility model, an electrical connection device is also disclosed. The electrical connection device includes: an insulating shell (not shown), a terminal 1, and an aluminum wire. The terminal 1 is inserted into the insulating shell. The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal and led out from the insulating shell.

[0104] like Figure 5 and Figure 6 As shown in the illustrated embodiment, the electrical connection device can be a connector, a charging socket, or a charging gun, and the terminal is a power terminal used to transmit charging current.

[0105] Fourth embodiment

[0106] Figure 7 and Figure 8 A fourth embodiment according to the present invention is shown. In this embodiment, Figure 7 A perspective view of a terminal according to an exemplary fourth embodiment of the present invention is shown;

[0107] Figure 8 This diagram shows an exploded view of a terminal according to an exemplary fourth embodiment of the present invention.

[0108] like Figure 7 and Figure 8 As shown, in an exemplary embodiment of this utility model, a terminal 1 is disclosed. The terminal 1 includes an electrical contact portion 11 and an electrical connection portion 12. The electrical contact portion 11 is used for electrical contact with a mating terminal (not shown). The electrical connection portion 12 is used for electrical connection with an aluminum wire (not shown). The electrical contact portion 11 and the electrical connection portion 12 are connected as a single unit; the electrical contact portion 11 is made of copper or a copper alloy, and the electrical connection portion 12 is made of aluminum or an aluminum alloy.

[0109] like Figure 7 and Figure 8 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one elastic arm 111 for making electrical contact with the mating terminal.

[0110] like Figure 7 and Figure 8 As shown, in the illustrated embodiment, the electrical contact portion 11 has at least one pair of elastic arms 111, each pair of elastic arms 111 being used to clamp the mating terminal inserted between them for electrical contact with the mating terminal.

[0111] like Figure 7 and Figure 8 As shown, in the illustrated embodiment, the electrical contact portion 11 includes a peripheral wall 110 surrounding the insertion cavity, and an elastic arm 111 is formed on the peripheral wall 110. The elastic arm 111 is used to make electrical contact with the mating terminal of the insertion cavity of the electrical contact portion 11.

[0112] However, the present invention is not limited to the embodiments shown in the figures. For example, in another exemplary embodiment of the present invention, terminal 1 can be a male terminal, and electrical contact portion 11 can be columnar or tongue-shaped and adapted to be inserted into the female mating terminal to make electrical contact with the contact spring (not shown) of the mating terminal.

[0113] like Figure 7 and Figure 8 As shown in the illustrated embodiment, the electrical contact portion 11 of the terminal is a one-piece stamped part. The electrical connection portion 12 of the terminal is also a one-piece stamped part. This improves manufacturing efficiency and reduces production costs.

[0114] like Figure 7 and Figure 8 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal is adapted to be crimped onto the connection end of the aluminum wire.

[0115] like Figure 7 and Figure 8 As shown, in the illustrated embodiment, the electrical connection portion 12 of the terminal has a U-shaped crimp portion 121, which is adapted to be crimped onto the connection end of the aluminum wire.

[0116] like Figure 7 and Figure 8 As shown in the illustrated embodiment, the U-shaped crimping portion 121 includes a pair of first crimping wings 121a, which are used to crimp onto the connection end of the aluminum wire.

[0117] like Figure 7 and Figure 8 As shown in the illustrated embodiment, the U-shaped crimp portion 121 further includes a pair of second crimp wings 121b, which are used to crimp onto the outer insulation layer of the aluminum wire.

[0118] like Figure 7 and Figure 8 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 can be welded, heat-fused, cold-rolled, riveted, crimped, or bolted to the electrical connection 12 to connect the electrical contact 11 and the electrical connection 12 into one unit.

[0119] like Figure 7 and Figure 8As shown in the illustrated embodiment, a first serration 113 is formed on the electrical contact portion 11, and a second serration 123 is formed on the electrical connection portion 12. The first serration 113 and the second serration 123 mesh and are welded, heat-fused, or cold-rolled together to connect the electrical contact portion 11 and the electrical connection portion 12 into one unit.

[0120] like Figure 7 and Figure 8 As shown, in another exemplary embodiment of this utility model, an electrical connection assembly is also disclosed. The electrical connection assembly includes: a terminal 1 and an aluminum wire (not shown). The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal.

[0121] like Figure 7 and Figure 8 As shown, in another exemplary embodiment of this utility model, an electrical connection device is also disclosed. The electrical connection device includes: an insulating shell (not shown), a terminal 1, and an aluminum wire. The terminal 1 is inserted into the insulating shell. The aluminum wire is electrically connected to the electrical connection portion 12 of the terminal and led out from the insulating shell.

[0122] like Figure 7 and Figure 8 As shown in the illustrated embodiment, the electrical connection device can be a connector, a charging socket, or a charging gun, and the terminal is a power terminal used to transmit charging current.

[0123] However, the present invention is not limited to the embodiments shown in the figure. For example, the electrical connection portion 12 of terminal 1 can also be heat-fused, riveted or bolted to the connection end of the aluminum wire.

[0124] Examples of terminal manufacturing methods

[0125] Figures 9 to 14 Display manufacturing Figures 1 to 8 The method for manufacturing the terminal shown. Wherein, Figure 9 This diagram shows an exemplary first metal plate 11' and second metal plate 12' according to the present invention; Figure 10 The display will Figure 9 A schematic diagram showing the first metal plate 11' and the second metal plate 12' connected together; Figure 11 This shows a perspective view of another exemplary first metal plate 11' and second metal plate 12' according to the present invention; Figure 12 The display will Figure 11 A schematic diagram showing the first metal plate 11' and the second metal plate 12' connected together;

[0126] Figure 13 Displayed through stamping Figure 10 or Figure 12An exemplary schematic diagram of a terminal strip 10 made from a metal sheet 10' is shown. Figure 14 Displayed through stamping Figure 10 or Figure 12 Another exemplary schematic diagram of the terminal strip 10 made from the metal sheet 10' shown.

[0127] like Figures 9 to 14 As shown, in an exemplary embodiment of this utility model, a terminal manufacturing method is also disclosed. The terminal manufacturing method includes the following steps:

[0128] S10: See also Figure 9 and Figure 11 A first metal plate 11' and a second metal plate 12' are provided;

[0129] S20: See also Figure 10 and Figure 12 One side of the first metal plate 11' and one side of the second metal plate 12' are connected together to form a metal plate 10';

[0130] S30: See also Figure 13 and Figure 14 Stamping metal sheet 10' to form a terminal strip 10; and

[0131] S40: See also Figure 13 and Figure 14 Cut the terminal strip 10 to obtain multiple terminals 1.

[0132] like Figures 9 to 14 As shown in the illustrated embodiment, the first metal plate 11' is a copper plate or a copper alloy plate, the electrical contact portion 11 of the terminal 1 for electrical contact with the mating terminal is made of the first metal plate 11', the second metal plate 12' is an aluminum plate, and the electrical connection portion 12 of the terminal 1 for electrical connection with the aluminum wire is made of the second metal plate 12'.

[0133] like Figures 9 to 14 As shown, in the illustrated embodiment, the terminal strip 10 has a carrier strip portion 13 connected to the electrical connection portion 12 of the terminal 1 for positioning and conveying the terminal 1, and the carrier strip portion 13 is made of a second metal plate 12'.

[0134] like Figures 9 to 14 As shown, in the illustrated embodiment, one side of the first metal plate 11' and one side of the second metal plate 12' are welded, hot-melted, or cold-rolled together.

[0135] like Figures 9 to 14As shown in the illustrated embodiment, a first serration 113 is formed on one side of the first metal plate 11', and a second serration 123 is formed on one side of the second metal plate 12'. The first serration 113 and the second serration 123 mesh and are welded, hot-melt welded, or cold-rolled together. This can improve the bonding strength between the first metal plate 11' and the second metal plate 12'.

[0136] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0137] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0138] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0139] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A terminal characterized by comprising: include: Electrical contact part (11) is used for electrical contact with mating terminal; and Electrical connection part (12) is used for electrical connection with aluminum wire. The electrical contact (11) and the electrical connection (12) are connected as one unit. The electrical contact (11) is made of copper or copper alloy, and the electrical connection (12) is made of aluminum or aluminum alloy.

2. The terminal according to claim 1, characterized in that: The electrical contact portion (11) has at least one elastic arm (111) for making electrical contact with the mating terminal.

3. The terminal according to claim 1, characterized in that: The electrical contact portion (11) has at least one pair of elastic arms (111), each pair of elastic arms (111) for clamping mating terminals inserted between them for electrical contact with the mating terminals.

4. The terminal according to claim 1, characterized in that: The electrical contact portion (11) includes a peripheral wall (110) surrounding the insertion cavity, on which an elastic arm (111) is formed, the elastic arm (111) being used for electrical contact with a mating terminal inserted into the insertion cavity.

5. The terminal according to claim 1, characterized in that: The electrical contact portion (11) is columnar or tongue-shaped and is adapted to be inserted into the mating terminal of the female type to make electrical contact with the contact spring of the mating terminal.

6. The terminal according to claim 1, characterized in that: The electrical contact portion (11) of the terminal is a one-piece stamped part; and / or The electrical connection part (12) of the terminal is an integral stamped part.

7. The terminal according to claim 1, characterized in that: The electrical connection portion (12) of the terminal is adapted to be soldered to the connection end of the aluminum wire.

8. The terminal according to claim 7, characterized in that: The electrical connection portion (12) of the terminal has a flat solder portion (120) adapted to be soldered to the connection end of the aluminum wire.

9. The terminal according to claim 1, characterized in that: The electrical connection portion (12) of the terminal is adapted to be crimped onto the connection end of the aluminum wire.

10. The terminal according to claim 9, characterized in that: The electrical connection portion (12) of the terminal has a U-shaped crimp portion (121) which is adapted to be crimped onto the connection end of the aluminum wire.

11. The terminal according to claim 10, characterized in that: The U-shaped crimping part (121) includes a pair of first crimping wings (121a), which are used to crimp to the connection end of the aluminum wire.

12. The terminal according to claim 11, characterized in that: The U-shaped crimping portion (121) further includes a pair of second crimping wings (121b), which are used to crimp onto the outer insulation layer of the aluminum wire.

13. The terminal according to any one of claims 1-12, characterized in that: The electrical connection portion (12) of the terminal is adapted to be welded, crimped, heat-fused, riveted or bolted to the connection end of the aluminum wire.

14. The terminal according to any one of claims 1-12, characterized in that: The electrical contact (11) is welded, heat-fused, cold-rolled, riveted, crimped or bolted to the electrical connection (12) to connect the electrical contact (11) and the electrical connection (12) into one unit.

15. The terminal according to any one of claims 1-12, characterized in that: The electrical contact (11) has a U-shaped rear end (112), and the electrical connection (12) has a U-shaped front end (122). The U-shaped rear end (112) of the electrical contact (11) is welded or heat-fused to the U-shaped front end (122) of the electrical connection (12) to connect the electrical contact (11) and the electrical connection (12) into one unit.

16. The terminal according to any one of claims 1-12, characterized in that: A first serration (113) is formed on the electrical contact portion (11), and a second serration (123) is formed on the electrical connection portion (12). The first serration (113) and the second serration (123) mesh and are welded, hot-melted or cold-rolled together to connect the electrical contact portion (11) and the electrical connection portion (12) into one unit.

17. An electrical connection assembly, characterised in that include: Terminal (1) as described in any one of claims 1-16; and An aluminum wire is electrically connected to the electrical connection portion (12) of the terminal.

18. An electrical connection device, characterised in that include: Insulating shell; The terminal (1) of any one of claims 1-16 is inserted into the insulating shell; and An aluminum wire is electrically connected to the electrical connection portion (12) of the terminal and led out from the insulating shell.

19. The electrical connection device according to claim 18, characterized in that: The electrical connection device is a connector, a charging socket, or a charging gun, and the terminal is a power terminal used to transmit charging current.

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