Terminal and method of manufacturing the same, electrical connection assembly, and electrical connection device

Abstract

The application discloses a terminal, a manufacturing method thereof, an electric connection assembly and an electric connection device. The terminal comprises an electric contact part for electrically contacting with a counter terminal and an electric connection part for electrically connecting with an aluminum wire. The electric contact part and the electric connection part are connected as a whole. The electric contact part is made of copper or copper alloy, and the electric connection part is made of aluminum or aluminum alloy. In the foregoing exemplary embodiments of the application, the terminal comprises the electric contact part made of copper or copper alloy and the electric connection part made of aluminum or aluminum alloy. The electric contact part made of copper or copper alloy can reliably and stably electrically contact with the counter terminal, and the electric connection part made of aluminum or aluminum alloy can reliably and stably electrically connect with the aluminum wire, so that the electrochemical corrosion problem between the copper terminal and the aluminum wire can be effectively avoided.

Description

Technical Field

[0001] This invention relates to a terminal and a method for manufacturing the same. Furthermore, this invention also relates to an electrical connection assembly including 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. Summary of the Invention

[0003] The purpose of this invention 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, 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.

[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 invention, the electrical contact portion has at least one pair of resilient arms, each pair of resilient 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 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 a one-piece stamped part; and / or the electrical connection portion of the terminal is a one-piece 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 solder portion adapted to be soldered 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 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 crimp portion includes a pair of first crimping wings for crimping onto the connection end of the aluminum wire.

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

[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 method for manufacturing a terminal 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, wherein 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 terminal and the aluminum wire.

[0034] Other objects and advantages of the 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 An exploded view of a terminal according to an exemplary first embodiment of the present invention is shown;

[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 11 A perspective view of another exemplary first metal plate and second metal plate according to the present invention is shown;

[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 the present invention 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 the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention 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 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, 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 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.

[0053] According to another general technical concept 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.

[0054] According to another general technical concept of the present invention, a terminal manufacturing method is provided. The terminal manufacturing method includes the following steps: providing a first metal plate and a second metal plate; joining 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. Wherein, Figure 1 A perspective view of a terminal according to an exemplary first embodiment of the present invention is shown; Figure 2 An exploded view of a terminal according to an exemplary first embodiment of the present invention is shown.

[0057] like Figure 1 and Figure 2 As shown, in an exemplary embodiment of the present invention, 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.

[0058] 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.

[0059] 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.

[0060] like Figure 1 and Figure 2 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.

[0061] However, the present invention is not limited to the illustrated embodiments. 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] like Figure 1 and Figure 2 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 may 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.

[0066] 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.

[0067] like Figure 1 and Figure 2 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This 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.

[0068] like Figure 1 and Figure 2 As shown, in another exemplary embodiment of the present invention, 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.

[0069] 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.

[0070] Second Embodiment

[0071] Figure 3 and Figure 4 A first embodiment according to the present invention is shown. Wherein, Figure 3 A perspective view of a terminal according to an exemplary second embodiment of the present invention is shown; Figure 4 An exploded view of a terminal according to an exemplary second embodiment of the present invention is shown.

[0072] like Figure 3 and Figure 4 As shown, in an exemplary embodiment of the present invention, 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] However, the present invention is not limited to the illustrated embodiments. 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.

[0077] like Figure 3and 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.

[0078] 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.

[0079] 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.

[0080] like Figure 3 and Figure 4 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 may 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.

[0081] 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.

[0082] like Figure 3 and Figure 4 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This 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.

[0083] like Figure 3 and Figure 4 As shown, in another exemplary embodiment of the present invention, 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.

[0084] 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.

[0085] Third Embodiment

[0086] 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; Figure 6 An exploded view of a terminal according to an exemplary third embodiment of the present invention is shown.

[0087] like Figure 5 and Figure 6 As shown, in an exemplary embodiment of the present invention, 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] However, the present invention is not limited to the illustrated embodiments. 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] like Figure 5 and Figure 6 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 may 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.

[0098] 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.

[0099] like Figure 5 and Figure 6 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This 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.

[0100] like Figure 5 and Figure 6 As shown, in another exemplary embodiment of the present invention, 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.

[0101] like Figure 5 and Figure 6As 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.

[0102] Fourth embodiment

[0103] Figure 7 and Figure 8 A fourth embodiment according to the present invention is shown. Figure 7 A perspective view of a terminal according to an exemplary fourth embodiment of the present invention is shown; Figure 8 An exploded view of a terminal according to an exemplary fourth embodiment of the present invention is shown.

[0104] like Figure 7 and Figure 8 As shown, in an exemplary embodiment of the present invention, 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] However, the present invention is not limited to the illustrated embodiments. 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.

[0109] like Figure 7 and Figure 8As 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] like Figure 7 and Figure 8 As shown, in an exemplary embodiment of the present invention, the electrical contact 11 may 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.

[0115] like Figure 7 and Figure 8 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.

[0116] like Figure 7 and Figure 8 As shown, in another exemplary embodiment of the present invention, an electrical connection assembly is also disclosed. This 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.

[0117] like Figure 7 and Figure 8As shown, in another exemplary embodiment of the present invention, 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.

[0118] 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.

[0119] 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.

[0120] Examples of terminal manufacturing methods

[0121] 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 A perspective view of a first metal plate 11' and a second metal plate 12' according to another exemplary invention is shown; Figure 12 The display will Figure 11 A schematic diagram showing the first metal plate 11' and the second metal plate 12' connected together; Figure 13 Displayed through stamping Figure 10 or Figure 12 An 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.

[0122] like Figures 9 to 14 As shown, in an exemplary embodiment of the present invention, a terminal manufacturing method is also disclosed. The terminal manufacturing method includes the following steps:

[0123] S10: See also Figure 9 and Figure 11 A first metal plate 11' and a second metal plate 12' are provided;

[0124] S20: See also Figure 10 and Figure 12One 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';

[0125] S30: See also Figure 13 and Figure 14 Stamping metal sheet 10' to form a terminal strip 10; and

[0126] S40: See also Figure 13 and Figure 14 Cut the terminal strip 10 to obtain multiple terminals 1.

[0127] 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'.

[0128] 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'.

[0129] 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.

[0130] like Figures 9 to 14 As 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'.

[0131] 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 invention.

[0132] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention.

[0133] While some embodiments of the general concept of the invention 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 the invention, the scope of which is defined by the claims and their equivalents.

[0134] 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 the invention.

Claims

1. A terminal, characterized in that, 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, pressed 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, characterized 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, characterized 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.

20. A method for manufacturing a terminal, characterized in that, Includes the following steps: A first metal plate (11') and a second metal plate (12') are provided; One side of the first metal plate (11') and one side of the second metal plate (12') are joined together to form a metal plate (10'); Stamping the metal sheet (10') to form a terminal strip (10); and Cut the terminal strip (10) to obtain a plurality of terminals (1). The first metal plate (11') is a copper plate or a copper alloy plate, and 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 part (12) of the terminal (1) for electrical connection with the aluminum wire is made of the second metal plate (12').

21. The terminal manufacturing method according to claim 20, characterized in that: The terminal strip (10) has a carrier strip (13) connected to the electrical connection portion (12) of the terminal (1) for positioning and conveying the terminal (1), the carrier strip (13) being made of the second metal plate (12').

22. The terminal manufacturing method according to claim 20, characterized in that: 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.

23. The terminal manufacturing method according to claim 20, characterized in that: 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-melted or cold-rolled together.

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