A high-voltage connector and a charging device for a new energy vehicle

Abstract

This utility model discloses a high-voltage connector and a charging device for new energy vehicles, comprising: a terminal body, an access channel for inserting a conductor along an extension path A, and the terminal body having at least two rows of spring contacts spaced apart along the extension path A, wherein each row of spring contacts has at least two spring contacts arranged vertically opposite each other. Each spring contact includes a starting end connected to the terminal body and a clamping end extending along the extension path A away from the starting end in a cantilever-like structure. The clamping ends of each row of spring contacts are respectively arranged close to each other, and the clamping ends of the two rows of spring contacts are arranged in a close relative position to clamp the same conductor. This application provides a stable and reliable clamping effect on the conductor, reduces the risk of contact failure, and has high current-carrying connection stability. This utility model relates to the field of electrical connector technology.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and more specifically to a high-voltage connector and a charging device for new energy vehicles. Background Technology

[0002] High-voltage connectors are the most commonly used electrical connection components in high-voltage wiring harnesses of new energy vehicles. Their function is to bridge the transmission gap between high-voltage wiring harnesses, thereby enabling current flow and allowing the circuit to perform its intended function. Terminals are indispensable components in high-voltage connectors.

[0003] Connector terminals come in a wide variety of forms and structures, depending on the application, frequency, power, and environment. However, regardless of the type of connector terminal, it is essential to ensure smooth, continuous, and reliable current flow.

[0004] The high-voltage circuits of existing new energy vehicles generally use single-row or single-point contact terminals. Due to vibration, thermal cycling and tolerance accumulation, the contact resistance is prone to increase, resulting in fretting wear or even ablation. Utility Model Content

[0005] To address the shortcomings and defects of existing technologies, a high-voltage connector is provided that provides stable and reliable clamping effect on conductors, reduces the risk of contact failure, and has high current-carrying connection stability for use in charging devices for new energy vehicles.

[0006] A high-voltage connector, comprising: The terminal body has an access channel for inserting a conductor along the extension path A. Furthermore, the terminal body is provided with at least two rows of spring contacts spaced apart along the extension path A. Each row of spring contacts has at least two spring contacts arranged vertically opposite each other. Each spring contact includes a starting end connected to the terminal body and a clamping end extending along the extension path A away from the starting end in a cantilever-like structure. The clamping ends of each row of spring clips are respectively positioned close to each other. The clamping ends of the two rows of spring clips are arranged close to each other to clamp the same conductor.

[0007] With the above structure, the multi-contact high-voltage connector terminal of this utility model for new energy vehicles has the following advantages compared with the prior art: The two rows of spring contacts are arranged symmetrically so that the clamping ends are positioned close to each other. The clamping ends of the two rows of spring contacts clamp the same conductor, which ensures stable and reliable clamping effect on the conductor, reduces the risk of contact failure, and provides high stability of current-carrying connection. Furthermore, by shortening the distance between the two clamping ends, the longitudinal assembly space requirement is reduced.

[0008] As an improvement of this utility model, the terminal body is formed into a sheet structure by stamping, and the left and right sides are brought close together and fixed by bending to form a rectangular tubular structure.

[0009] As an improvement of this utility model, the left and right sides of the terminal body are connected by a dovetail groove block fitting structure.

[0010] As an improvement of this utility model, the left and right sides of the terminal body are fixed by laser welding.

[0011] As an improvement of this utility model, eight spring contacts are arranged along the width direction on the upper and lower side walls of the terminal body in each row.

[0012] As an improvement of this utility model, the access channel is a through structure, the conductor passes through the front end of the access channel, and a copper busbar passes through the rear end of the access channel, with a rivet nut connected to the copper busbar.

[0013] As an improvement of this utility model, the terminal body is provided with longitudinally extending and laterally extending reinforcing limiting ribs, which protrude into the access channel and contact the surface of the conductor.

[0014] A charging device for new energy vehicles includes a high-voltage connector as described in any one of the above descriptions. It also includes a housing, which is provided with a receiving groove, and the tail end of the receiving groove is provided with an inwardly converging positioning block; The terminal body is inserted from the front end of the receiving groove until it abuts against the positioning block, so as to enter the preset assembly position. A fixing structure is also provided between the terminal body and the housing to fix the terminal body.

[0015] As an improvement of this utility model, the upper and lower walls of the receiving groove are respectively provided with limiting grooves. The terminal body is provided with a limiting block protruding from the surface. The limiting groove allows the limiting part to travel within it, thus serving a guiding function.

[0016] As an improvement of this utility model, the tail end of the terminal body is provided with a locking claw. An inwardly tapering stop is provided at the tail end of the receiving groove. The terminal body is in a preset assembly position. The claw is opened so that the claw stops at the tail end of the positioning block to restrict the forward movement of the terminal body. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the high-voltage connector of this utility model.

[0018] Figure 2 This is a partial cross-sectional view of the high-voltage connector of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the terminal body of this utility model.

[0020] Figure 4 This is a schematic diagram of the charging device structure of this utility model.

[0021] Figure 5 This is a partial cross-sectional view of the charging device of this utility model.

[0022] Figure 6 This is the utility model Figure 5 Enlarged schematic diagram of the structure at point B.

[0023] Figure 7 This is a partial cross-sectional view of the charging device of this utility model.

[0024] Figure 8 This is the utility model Figure 7 Enlarged schematic diagram of the structure at point C.

[0025] The figure shows: 1. Terminal body; 1.1. Fitting structure of dovetail groove block; 1.2. Reinforcing limiting rib; 1.3. Limiting block; 1.4. Claw; 2. Access channel; 3. Conductor; 4. Spring piece; 4.1. Starting end; 4.2. Clamping end; 5. Copper busbar; 5.1. Press-fit nut; 6. Housing; 6.1. Receiving groove; 6.11. Positioning block; 6.12. Limiting groove; 6.13. Stop block. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Please see Figure 1-3 As shown, A high-voltage connector, comprising: The terminal body 1 has an access channel 2 along the extension path A for inserting a conductor 3. Furthermore, the terminal body 1 is provided with at least two rows of spring contacts 4 spaced apart along the extension path A. Each row of spring contacts 4 has at least two spring contacts arranged vertically opposite each other. Each spring contact 4 includes a starting end 4.1 connected to the terminal body 1 and a clamping end 4.2 extending along the extension path A away from the starting end 4.1, forming a cantilever-like structure. The clamping ends 4.2 of each row of spring clips 4 are respectively positioned close to each other. The clamping ends 4.2 of the two rows of spring contacts 4 are arranged close to each other so as to clamp together the same conductor 3.

[0028] The two rows of spring contacts 4 are arranged symmetrically so that the clamping ends 4.2 are arranged close to each other. The clamping ends 4.2 of the two rows of spring contacts 4 are clamped together on the same conductor 3, which reduces the risk of contact failure and ensures high stability of current-carrying connection. Furthermore, by shortening the distance between the two clamping ends 4.2, the longitudinal assembly space requirement is reduced.

[0029] In some embodiments, the terminal body 1 is formed by stamping a sheet-like structure, and by bending the left and right sides to bring them close together and fix them, so as to form a rectangular tubular structure, wherein the cross-section of the access channel 2 and the conductor 3 are both rectangular structures.

[0030] The terminals are formed by stamping, which simplifies the process, reduces processing costs, and facilitates automation and large-scale mass production.

[0031] Please see Figure 1 As shown, the left and right sides of the terminal body 1 are connected by a dovetail groove block fitting structure 1.1, and the joint is fixed by a dovetail structure to make the structure stable and reliable.

[0032] The left and right sides of the terminal body 1 are fixed by laser welding. After the above improvements, the stability of the structure is further enhanced.

[0033] Please see Figure 1 , 3 As shown, eight spring contacts 4 are arranged along the width direction on the upper and lower side walls of the terminal body 1, respectively. The multi-contact spring contact 4 structure is adopted to improve the heat dissipation effect during operation, further reduce the risk of contact failure, and ensure high stability of current-carrying connection.

[0034] Please see Figure 1-3 As shown, the access channel 2 is a through structure. The conductor 3 passes through the front end of the access channel 2, and the copper busbar 5 passes through the rear end of the access channel 2. The copper busbar 5 is connected to the press nut 5.1. The above improvement has the characteristics of being beneficial to manufacturing.

[0035] The terminal body 1 is provided with a longitudinally extending and laterally extending reinforcing rib 1.2, which protrudes into the access channel 2 and contacts the surface of the conductor 3.

[0036] The terminal body 1 has 8 reinforcing limiting ribs 1.2 on the upper and lower surfaces and 2 reinforcing limiting ribs 1.2 on the left and right sides. The inner side of the reinforcing limiting ribs 1.2 is in contact with the surface of the conductor 3, which can better limit the conductor 3 and strengthen the structural strength of the terminal body 1.

[0037] Please see Figure 4-8 As shown, a charging device for new energy vehicles includes a high-voltage connector as described above, to ensure high stability of the current-carrying connection of the charging device. It also includes a housing 6, which is provided with a receiving groove 6.1, and the tail end of the receiving groove 6.1 is provided with an inwardly converging positioning block 6.11; The terminal body 1 is inserted from the front end of the receiving groove 6.1 until it abuts against the positioning block 6.11 to enter the preset assembly position. The terminal body 1 is connected to the housing 6 by plugging in, which has the characteristics of simple assembly and is suitable for automated assembly operations. A fixing structure is also provided between the terminal body 1 and the housing 6 to fix the terminal body 1.

[0038] Please see Figure 5-6 As shown, the upper and lower walls of the receiving groove 6.1 are respectively provided with limiting grooves 6.12. The upper and lower walls are respectively provided with limiting grooves 6.12 on the left and right sides. The upper and lower surfaces of the terminal body 1 are each provided with a limiting block 1.3 protruding from the surface. The limiting groove 6.12 allows the limiting part to travel within it, serving as a guide and making the assembly of the terminal body 1 and the receiving groove 6.1 simpler and more accurate.

[0039] Please see Figure 7-8 As shown, the tail end of the terminal body 1 is provided with a claw 1.4. In some embodiments, the claw 1.4 is connected to the terminal body 1 at its tail end, and its front end is a cantilever beam structure that extends outward at an angle. An inwardly tapering stop 6.13 is provided at the tail end of the receiving groove 6.1, wherein there is a gap between the stop 6.13 and the positioning block 6.11. During assembly, the jaw 1.4 enters the gap, and the front end of the jaw 1.4 abuts against the rear end face of the stop block 6.13. The rear end of the terminal body 1 abuts against the front end face of the positioning block 6.11, thereby fixing the terminal body 1 in the preset assembly position. In some embodiments, the front end face of the positioning block 6.11 is inclined so that the claw 1.4 can retract inward to pass over the stop block 6.13 and enter the gap.

[0040] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A high-voltage connector, characterized in that, include: The terminal body (1) has an access channel (2) along the extension path A for inserting a conductor (3). Furthermore, the terminal body (1) is provided with at least two rows of spring pieces (4) spaced along the extension path A. Each row of springs (4) has at least two springs arranged opposite each other. Each spring (4) includes a starting end (4.1) connected to the terminal body (1) and a clamping end (4.2) extending along the extension path A away from the starting end (4.1) and forming a cantilever structure. The clamping ends (4.2) of each row of spring clips (4) are respectively positioned close to each other. The clamping ends (4.2) of the two rows of spring clips (4) are arranged close to each other so as to clamp together on the same conductor (3).

2. A high-voltage connector according to claim 1, characterized in that: The terminal body (1) is formed by stamping into a sheet-like structure, and by bending the left and right sides together and fixing them to form a rectangular tubular structure.

3. A high-voltage connector according to claim 2, characterized in that: The left and right sides of the terminal body (1) are connected by a dovetail groove structure (1.1).

4. A high-voltage connector according to claim 2, characterized in that: The left and right sides of the terminal body (1) are fixed by laser welding.

5. A high-voltage connector according to claim 1, characterized in that: Eight spring clips (4) are arranged along the width direction on the upper and lower side walls of the terminal body (1).

6. A high-voltage connector according to claim 1, characterized in that: The access channel (2) is a through structure. The conductor (3) passes through the front end of the access channel (2). A copper busbar (5) passes through the rear end of the access channel (2). The copper busbar (5) is connected to a press-fit nut (5.1).

7. A high-voltage connector according to claim 1, characterized in that: The terminal body (1) is provided with longitudinally extending and laterally extending reinforcing ribs (1.2), which protrude into the access channel (2) and contact the surface of the conductor (3).

8. A charging device for new energy vehicles, comprising a high-voltage connector as described in any one of claims 1-7, characterized in that: It also includes a housing (6), which is provided with a receiving groove (6.1), and the tail end of the receiving groove (6.1) is provided with an inwardly converging positioning block (6.11). The terminal body (1) is inserted from the front end of the receiving groove (6.1) until it abuts against the positioning block (6.11) to enter the preset assembly position. A fixing structure is also provided between the terminal body (1) and the housing (6) to fix the terminal body (1).

9. A charging device for new energy vehicles according to claim 8, characterized in that: The upper and lower walls of the receiving groove (6.1) are respectively provided with limiting grooves (6.12). The terminal body (1) is provided with a limiting block (1.3) protruding from the surface. The limiting groove (6.12) allows the limiting part to travel within it, thus serving a guiding function.

10. A charging device for new energy vehicles according to claim 8, characterized in that: The terminal body (1) is provided with a claw (1.4) at its tail end. An inwardly converging stop (6.13) is provided at the tail end of the receiving groove (6.1). The terminal body (1) is in a preset assembly position, and the claw (1.4) is opened so that the claw (1.4) stops at the tail end of the positioning block (6.11) to restrict the terminal body (1) from moving forward.

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