Large-current metal bar charging socket

Abstract

The utility model discloses a large-current metal bar charging socket, which solves the problem that a wire harness type charging socket cannot meet the requirement of high current bearing. Comprising a shell, a connecting terminal and a metal bar, the connecting terminal is fixed in the shell, the metal bar is inserted into the shell from the outside of the shell and is connected with the connecting terminal, the tail end of the connecting terminal is provided with a flat guide connecting plate, the connecting position of the guide connecting plate and the connecting position of the metal bar are attached and contacted in parallel, and the metal bar and the guide connecting plate are fixedly connected through a locking piece. The metal row serves as a conducting medium, the cross section area of the metal row is large and continuous, compared with a thin wire in a traditional wire harness, the metal row can bear larger current, the metal row is attached to the guide connecting plate of the connecting terminal in parallel and is fixedly connected with the guide connecting plate through the locking piece, a stable current conduction path is formed, and the service life of the wire harness is prolonged. Current fluctuation caused by poor contact is reduced, the stability of a current circulation surface is kept, and the current stability in the charging process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy charging equipment, in particular to a high-current metal busbar charging socket. Background Art

[0002] The increasing popularity of new energy devices, especially new energy vehicles, has posed a rapid charging challenge to charging infrastructure. To meet the growing demand for fast charging, charging sockets, as the key link connecting electric vehicles to the power grid, must have high current carrying capacity and excellent current stability. However, traditional wiring harness charging sockets have difficulty meeting the demand for fast charging due to their inherent technical and physical limitations. For example, the cross-sectional area of the wires in the wiring harness directly affects its current carrying capacity. Larger currents require thicker wires to reduce resistance and heat generation, but this increases the size and weight of the wiring harness, hindering portability and installation. Moreover, the connection between the wiring harness and the metal terminals will inevitably affect the change in cross-sectional area. Excessive changes may sacrifice some electrical performance, increase resistivity, and thus reduce charging efficiency. Therefore, even under ideal conditions, the wiring harness may not be able to provide a completely stable current output. Summary of the Invention

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a high-current metal busbar charging socket to solve the problem that the wiring harness type charging socket cannot meet the high current carrying capacity.

[0004] The technical solution of the utility model includes a shell, a connecting terminal and a metal bar, the connecting terminal is fixed in the shell, the metal bar is inserted into the shell from the outside of the shell and connected to the connecting terminal, the end of the connecting terminal has a flat conductive plate, the conductive plate is parallel and in contact with the connecting position of the metal bar, and the metal bar and the conductive plate are fastened together by a locking piece.

[0005] The above technical solution uses a metal busbar as a conductive medium. The metal busbar has a large and continuous cross-sectional area and can carry a larger current than the thin wires in traditional wiring harnesses. In addition, by parallelly attaching the metal busbar to the conductive plate of the connection terminal and fastening it with a locking piece, a stable current conduction path is formed, reducing current fluctuations caused by poor contact, maintaining a stable current flow surface, and ensuring current stability during the charging process.

[0006] In one possible design, the shell includes a back cover frame, the metal bar passes through the back cover frame, the back cover frame is adapted to fit the shape of the connection position between the conductive plate and the metal bar, a fastening hole is opened on the back cover frame, the fastening hole is opposite to the locking operation position of the locking member, and a hole cover is removably installed on the fastening hole.

[0007] With the above design, the shape of the rear cover frame not only provides support for the metal bar, but also ensures that the metal bar and the conductive plate maintain precise parallel fit, thereby enhancing the stability and reliability of the connection; the fastening holes facilitate the operation of the locking parts, ensuring a tight connection between the metal bar and the conductive plate.

[0008] In a possible design, the locking member is a stud, a nut ring is integrally formed on the guide plate, and the stud passes through the metal row, the guide plate and the nut ring for threaded connection.

[0009] With the above design, the integrated nut ring helps to reduce the use of additional parts, simplifies the assembly process, and makes on-site installation faster and more convenient.

[0010] In a possible design, a sealing cover is installed in the fastening hole, the sealing cover covers the locking member, and the sealing cover is elastically pressed into contact with the hole wall of the fastening hole to form a seal.

[0011] With the above design, the sealing cover effectively isolates external damage such as moisture and dust, reduces oxidation and corrosion of the locking parts, enhances the environmental adaptability of the connection position between the guide plate and the metal busbar, and ensures a safe and stable connection position.

[0012] In a possible design, the housing further includes a front panel and a terminal bracket that are separated from each other. The terminal bracket is connected between the rear cover frame and the front panel, and the connecting terminal is installed on the terminal bracket.

[0013] With the above design, the separate setting of the front panel, terminal bracket and rear cover frame makes the replacement or repair of individual parts easier, without the need to disassemble the entire charging socket, reducing the difficulty of maintenance operations, especially in the scenario where the charging socket is set up at the same time as another charging base, which improves the flexibility of disassembly.

[0014] In a possible design, a plurality of lugs are integrally provided on the periphery of the terminal bracket, and the lugs are threadedly connected to the front panel for fixation.

[0015] With the above design, the lugs provide an appropriate number of fixing points, making the connection between the terminal holder and the front panel more stable, allowing for quick removal and reinstallation, and facilitating on-site maintenance and component replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of a specific embodiment of the utility model;

[0017] Figure 2 This is an exploded diagram of a specific embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing according to a specific embodiment of the present utility model;

[0019] Figure 4 It is a cross-sectional view of a specific embodiment of the present utility model.

[0020] Among them, 1, housing; 11, rear cover frame; 111, fastening hole; 112, hole cover; 113, sealing cover; 12, front panel; 13, terminal bracket; 131, lug;

[0021] 2. Connecting terminal; 21. Conducting plate; 22. Nut ring;

[0022] 3. Metal busbar;

[0023] 4. Locking parts. DETAILED DESCRIPTION

[0024] like Figures 1-4 The high-current metal busbar charging socket shown in the figure comprises a housing 1, connecting terminals 2, and a metal busbar 3. The connecting terminals 2 are fixed within the housing 1. The metal busbar 3 is inserted into the housing 1 from the rear and connected to the connecting terminals 2. The end of the connecting terminal 2 has a flat conductive plate 21, which mates with the metal busbar 3 at its connection point, parallel to the conductive plate 21. The metal busbar 3 and conductive plate 21 are secured together by a locking member 4. Both the conductive plate 21 and the metal busbar 3 are plate-like structures, with the conductive plate 21 having a rectangular cross-section and the metal busbar 3 having a rounded rectangular cross-section. Both have relatively smooth flat surfaces, which closely contact each other to form a contact surface, maximizing the contact area and ensuring a current flow cross-section that meets high current transmission requirements. Furthermore, the conductive plate 21 and the metal busbar 3 have through-holes. The locking member 4 penetrates the through-holes to secure the conductive plate 21 and the metal busbar 3, ensuring close contact and stable connection under high current transmission. In addition, in order to accommodate the connection space required by the metal busbar 3 , the conductive plate 21 is eccentrically arranged relative to the central axis of the connecting terminal 2 , thereby providing a larger space for the connection of the metal busbar 3 .

[0025] The housing 1 includes a rear cover frame 11, through which the metal bar 3 extends. The rear cover frame 11 is adapted to fit the shape of the connection point between the conductor plate 21 and the metal bar 3, forming a roughly cylindrical shape. A fastening hole 111 is formed in the rear cover frame 11, extending from the inside to the outside. Fastening hole 111 must be positioned directly opposite the locking position of the locking member 4. A removable hole cover 112 is mounted on the fastening hole 111 and is attached to the rear cover frame 11 via a snap-fit mechanism. During installation, hole cover 112 is removed, the metal bar 3 is installed, the locking member 4 is tightened, and finally, hole cover 112 is sealed. Removing hole cover 112 allows for convenient and simple installation or maintenance of the connection point.

[0026] The locking member 4 is a stud, and a nut ring 22 is provided on one end of the conducting plate 21. The nut ring 22 and the conducting plate 21 are integrally formed. The stud extends through the through-holes of the metal busbar 3 and the conducting plate 21, and then is threadedly connected to the nut ring 22. This threaded connection between the stud and nut ring 22 provides a high-strength mechanical connection, ensuring a secure and reliable connection between the metal busbar 3 and the conducting plate 21, even under high current loads. The nut ring 22, integrally formed with the conducting plate 21, allows access to the locking member 4 by removing the hole cover 112, facilitating installation and maintenance.

[0027] To prevent foreign matter such as moisture and dust from invading the connection, a sealing cap 113 is installed within the fastening hole 111. Sealing cap 113 covers the locking member 4 and elastically compresses against the wall of the fastening hole 111 to form a seal, thereby enhancing the sealing of the connection. During installation, the locking member 4 is first tightened and installed, followed by sealing cap 113 inserted into the fastening hole 111, and finally, hole cap 112 is placed over the opening of the fastening hole 111.

[0028] The housing 1 also includes a front panel 12 and a terminal bracket 13 that are separate from each other, plus a rear cover frame 11. All three are separately arranged. The terminal bracket 13 is connected between the rear cover frame 11 and the front panel 12, and the connecting terminal 2 is installed on the terminal bracket 13. Several lugs 131 are integrally provided on the periphery of the terminal bracket 13. The lugs 131 are threadedly connected to the front panel 12 for fixation, and the rear cover frame 11 is snap-connected to the rear of the terminal bracket 13. New energy vehicles usually have two charging seats: a DC charging seat and an AC charging seat. In this case, the front panels 12 of the two charging seats are connected in one piece. In order to avoid obstructions during installation and disassembly, the terminal bracket 13 and the front panel 12 are separated, which is conducive to the convenience of the disassembly process. Moreover, the lug 131 design can provide sufficient space to ensure the appropriate distance between the charging sockets and avoid unnecessary electrical contact.

Claims

1. A high-current metal busbar charging socket, comprising a housing (1) and a connecting terminal (2), wherein the connecting terminal (2) is fixed in the housing (1), and is characterized in that: The invention also includes a metal bar (3), which is inserted from outside the housing (1) into the housing (1) and connected to the connecting terminal (2). The end of the connecting terminal (2) has a flat conductive plate (21), and the conductive plate (21) is parallel to and in contact with the connecting position of the metal bar (3). The metal bar (3) and the conductive plate (21) are fastened together by a locking member (4).

2. The high-current metal busbar charging socket according to claim 1, characterized in that: The shell (1) includes a rear cover frame (11), the metal row (3) passes through the rear cover frame (11), the rear cover frame (11) is adapted to fit the shape of the connection position between the conductive plate (21) and the metal row (3), a fastening hole (111) is opened on the rear cover frame (11), the fastening hole (111) is opposite to the locking operation position of the locking member (4), and a hole cover (112) is detachably installed on the fastening hole (111).

3. The high-current metal busbar charging socket according to claim 1 or 2, characterized in that: The locking member (4) is a stud, and a nut ring (22) is integrally formed on the guide plate (21). The stud passes through the metal row (3), the guide plate (21) and the nut ring (22) for threaded connection.

4. The high-current metal busbar charging socket according to claim 2, characterized in that: A sealing cover (113) is installed in the fastening hole (111), the sealing cover (113) covers the locking member (4), and the sealing cover (113) elastically squeezes and contacts the hole wall of the fastening hole (111) to form a seal.

5. The high-current metal busbar charging socket according to claim 1 or 2, characterized in that: The housing (1) further comprises a front panel (12) and a terminal bracket (13) which are separated from each other. The terminal bracket (13) is connected between the rear cover frame (11) and the front panel (12), and the connecting terminal (2) is mounted on the terminal bracket (13).

6. The high-current metal busbar charging socket according to claim 5, characterized in that: A plurality of lugs (131) are integrally provided at the periphery of the terminal bracket (13), and the lugs (131) are threadedly connected to the front panel (12) for fixation.

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