Heavy-current connector

Abstract

The utility model provides a large-current connector, and belongs to the technical field of vehicle equipment. The high-current connector is used for being electrically connected with an external wire harness and comprises a connecting terminal and a connecting piece body, a connecting cavity is formed in the connecting piece body, the connecting terminal is arranged on one side wall of the connecting cavity, part of the connecting terminal is located in the connecting cavity, a wire penetrating hole is formed in the side wall, opposite to the connecting terminal, in the connecting cavity, and an external wire harness penetrates through the wire penetrating hole to be welded to the connecting terminal. The high-current connector can reduce contact resistance and reduce cost.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle equipment, in particular to a high-current connector. Background Art

[0002] A vehicle's thermal management system typically includes independently installed components such as the air conditioning unit, condenser, water pump, cooler, electric heater, compressor, and piping. For new energy vehicles, components like the compressor and electric heater are typically driven by a high-voltage platform, with each part equipped with a quick-plug connector that connects to the high-voltage line. Existing quick-plug connectors typically interlock external wiring harness connectors with board-mounted connectors, with the current path being a reed connection between the female and male terminals. This arrangement results in high contact resistance and high cost. Utility Model Content

[0003] The purpose of the utility model is to provide a high-current connector, which can reduce contact resistance and lower costs.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] High-current connector for electrical connection to external wiring harness, including:

[0006] Connecting terminals;

[0007] The connector body has a connecting cavity inside, the connecting terminal is arranged on one of the side walls of the connecting cavity, and part of the connecting terminal is located in the connecting cavity. A wire threading hole is provided on the side wall of the connecting cavity opposite to the connecting terminal, and the external wiring harness passes through the wire threading hole and is welded to the connecting terminal.

[0008] As a further technical solution, in the direction from the threading hole to the connecting terminal, the side wall of the threading hole is configured as an inwardly retracted inclined guide surface.

[0009] As a further technical solution, there are multiple wire threading holes, which are spaced apart on the connector body, and at least two of the wire threading holes have different diameters. The connecting terminal and the connecting terminal are both arranged corresponding to the wire threading holes.

[0010] As a further technical solution, the plurality of threading holes are spaced apart along the length direction of the connector body, and among the plurality of threading holes, the centers of the threading holes with the same diameter are on the same horizontal line.

[0011] As a further technical solution, the connector body further includes a plurality of partition plates, which are spaced apart in the connection cavity. When the plurality of connection terminals are located in the connection cavity, a partition plate is provided between two adjacent connection terminals.

[0012] As a further technical solution, the high-current connector further includes a top plate and a bottom plate, and the connection cavity penetrates the connector body in the height direction;

[0013] The top plate is detachably arranged at the top opening of the connecting cavity, and the bottom plate is detachably arranged at the bottom opening of the connecting cavity.

[0014] As a further technical solution, at least one connecting column is provided on the upper end surface of the connector body, and correspondingly, a connecting hole is provided on the top plate, and the top plate is detachably connected to the connecting column through the connecting hole.

[0015] As a further technical solution, a first abutting protrusion is provided in the middle of the top plate. When the top plate is connected to the connecting column, the first abutting protrusion abuts against the inner wall of the top end of the connecting cavity.

[0016] As a further technical solution, two opposite side walls of the connector body are provided with snap-fitting protrusions, and two snap hooks are correspondingly provided on the bottom plate, and the two snap hooks are snap-fitted to the two snap-fitting protrusions in a one-to-one correspondence.

[0017] As a further technical solution, a second abutting protrusion is provided in the middle of the bottom plate. When the buckle is engaged with the corresponding engaging protrusion, the second abutting protrusion abuts against the inner wall of the bottom end of the connecting cavity.

[0018] Compared with the existing technology, the high current connector provided by the utility model has the following technical advantages:

[0019] Because the external wiring harness can be directly threaded through the wire holes and welded to the connection terminals, the external wiring harness end connectors can be eliminated, thereby reducing production and operating costs. Furthermore, because the external wiring harness is directly welded to the connection terminals, the contact resistance between the external wiring harness and the connection terminals can be reduced, thereby improving the current flow capacity between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a partial structural diagram of a high current connector provided by an embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of a high current connector provided by an embodiment of the present utility model;

[0022] Figure 3This is a front view of a high current connector provided by an embodiment of the utility model;

[0023] Figure 4 It is a cross-sectional view of a high-current connector provided by an embodiment of the present utility model.

[0024] In the picture:

[0025] 100, connecting terminal; 200, connecting member body; 210, threading hole; 220, partition plate; 230, connecting column; 240, snap-fit protrusion;

[0026] 300, top plate; 310, first abutting protrusion;

[0027] 400, bottom plate; 410, buckle; 420, second abutting protrusion. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] Combine Figures 1 to 4 As shown, the high-current connector provided in this embodiment is applied to an automotive integrated thermal management system. This high-current connector can reduce contact resistance and lower costs. Specifically, the high-current connector is used to electrically connect to an external wiring harness and includes a connecting terminal 100 and a connector body 200. The connector body 200 has a connecting cavity disposed therein. The connecting terminal 100 is disposed on one of the side walls of the connecting cavity, with a portion of the connecting terminal 100 located within the cavity. A wire threading hole 210 is provided on the side wall of the connecting cavity opposite the connecting terminal 100. The external wiring harness passes through the wire threading hole 210 and is welded to the connecting terminal 100.

[0033] One end of the connection terminal 100 is located within the connection cavity, while the other end abuts another connection point in the integrated thermal management system. Once the external wiring harness is welded to the connection terminal 100, the external wiring harness is electrically connected to the integrated thermal management system. Because the external wiring harness can be directly welded to the connection terminal 100 through the wire hole 210, connectors at the end of the external wiring harness can be eliminated, reducing production and operating costs. Furthermore, since the external wiring harness is directly welded to the connection terminal 100, the contact resistance between the external wiring harness and the connection terminal 100 is reduced, thereby improving the flow capacity between the two.

[0034] Furthermore, the sidewalls of threading hole 210 are configured as inwardly tapered guide surfaces, extending from threading hole 210 toward connecting terminal 100. During the threading process, these inclined guide surfaces guide the external wiring harness, allowing it to more easily pass through threading hole 210. After threading is complete, the inner diameter of threading hole 210 gradually decreases from threading hole 210 toward connecting terminal 100. This helps constrain and contain the corresponding external wiring harness on the side of threading hole 210 closest to connecting terminal 100, thereby reducing the likelihood of the external wiring harness escaping from threading hole 210 after threading is complete.

[0035] Furthermore, a plurality of wire holes 210 are provided, and the plurality of wire holes 210 are spaced apart on the connector body 200 , and at least two of the wire holes 210 have different diameters, and the connection terminals 100 are all provided corresponding to the wire holes 210 .

[0036] Because multiple wire holes 210 are provided, a high-current connector can be welded to multiple external wiring harnesses, thereby electrically connecting these external wiring harnesses to multiple components of the integrated thermal management system through the high-current connector. Furthermore, because the diameters of the multiple wire holes 210 vary, external wiring harnesses of different specifications can be electrically connected to the integrated thermal management system through the same high-current connector, thereby expanding the applicability of the high-current connector.

[0037] Preferably, in this embodiment, the plurality of threading holes 210 are spaced apart along the length of the connector body 200, and the centers of the threading holes 210 with the same diameter are on the same horizontal line. Since the plurality of threading holes 210 correspond one-to-one with the plurality of connection terminals 100, on the one hand, it is convenient to weld the plurality of external wiring harnesses to the corresponding connection terminals 100 without affecting other connection terminals. On the other hand, the plurality of threading holes 210 are spaced apart along the same direction. After the plurality of external wiring harnesses are welded to the corresponding connection terminals 100, the probability of the plurality of external wiring harnesses becoming entangled with each other outside the connector body can be reduced, thereby improving the overall aesthetics.

[0038] In some other embodiments, the plurality of threading holes 210 may be distributed in a row on the connector body 200 , or may be spaced apart according to actual needs.

[0039] Furthermore, the connector body 200 further includes a plurality of partition plates 220 , which are spaced apart in the connection cavity. When the plurality of connection terminals 100 are located in the connection cavity, a partition plate 220 is provided between each adjacent two connection terminals 100 .

[0040] Multiple partition plates 220 are arranged in parallel and spaced apart along the length of the connector body 200 within the connection cavity, thereby dividing the connection cavity into multiple accommodating cavities. The multiple connection terminals 100 are positioned one-to-one within the multiple accommodating cavities. This prevents the welding of the connection terminals 100 to the corresponding external wiring harnesses from affecting other wiring terminals and the external wiring harnesses. Furthermore, after the multiple external wiring harnesses are welded one-to-one to the multiple connection terminals 100, the connection cavity needs to be cast with a casting fluid to ensure the connection stability between the external wiring harnesses and the corresponding connection terminals 100 during welding, and to improve the sealing and waterproofing of the connection cavity. The presence of multiple partition plates 220 within the connection cavity reduces the use of casting fluid and improves the casting strength.

[0041] Preferably, the high-current connector also includes a top plate 300 and a bottom plate 400, and the connection cavity extends through the connector body 200 in the height direction, so as to facilitate welding of the external wiring harness and the corresponding connection terminal 100, as well as pouring of the casting liquid, from the top opening or the bottom opening. At the same time, when the high-current connector is actually used, there may be different installation positions. By opening the top opening or the bottom opening at the same time, an opening is added, that is, an operation position for welding or pouring is added, thereby improving the applicability of the high-current connector and facilitating its use in different installation environments. The top plate 300 is detachably mounted on the top opening of the connection cavity, and the bottom plate 400 is detachably mounted on the bottom opening of the connection cavity. When the top plate 300 or the bottom plate 400 is removed, welding or pouring can be performed. After welding or pouring is completed, the top plate 300 or the bottom plate 400 is installed to prevent leakage of the casting liquid while ensuring the structural integrity of the high-current connector.

[0042] Preferably, at least one connecting column 230 is provided on the upper end surface of the connector body 200 , and correspondingly, a connecting hole is provided on the top plate 300 , and the top plate 300 is detachably connected to the connecting column 230 through the connecting hole.

[0043] In this embodiment, two connecting posts 230 are provided, corresponding to two opposing side walls of the connector body 200. Two corresponding connecting holes are provided on the top plate 300, and the cross-sectional area of the connecting posts 230 gradually decreases from the lower end surface of the connector body 200 to the upper end surface of the connector body 200. After the connecting holes are fitted over the corresponding connecting posts 230, the top plate 300 is pressed downward to create an interference fit between the inner walls of the connecting holes and the outer walls of the connecting posts 230, thereby connecting the top plate 300 to the upper end surface of the connector body 200 and covering the top opening.

[0044] Furthermore, a first abutment protrusion 310 is provided in the middle of the top plate 300. When the top plate 300 is connected to the connecting column 230, the first abutment protrusion 310 abuts the inner wall of the top end of the connecting cavity. This improves the strength and stability of the connection between the top plate 300 and the upper end surface of the connector body 200. Furthermore, the first abutment protrusion 310 occupies a certain amount of space within the connecting cavity, which can reduce the use of casting fluid and further reduce costs.

[0045] Preferably, two opposing side walls of the connector body 200 are provided with engaging protrusions 240, and two corresponding buckles 410 are provided on the bottom plate 400. The two buckles 410 are engaged with the two engaging protrusions 240 in a one-to-one manner. By engaging the buckles 410 with the corresponding engaging protrusions 240, the bottom plate 400 is connected to the upper end surface of the connector body 200 and covers the bottom opening.

[0046] Furthermore, a second abutment protrusion 420 is provided in the middle of the base plate 400. When the latch 410 is engaged with the corresponding engagement protrusion 240, the second abutment protrusion 420 abuts against the inner wall of the bottom end of the connection cavity. This improves the connection strength and stability when the base plate 400 is connected to the lower end surface of the connector body 200. Furthermore, the second abutment protrusion 420 occupies a certain amount of space within the connection cavity, which can reduce the use of casting fluid and further reduce costs.

[0047] In addition, in order to improve the safety of the high-current connector, in this embodiment, the connector body 200 , the top plate 300 and the bottom plate 400 are all configured as plastic parts.

[0048] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. High current connector, used for electrical connection with external wiring harness, characterized in that: include: Connecting terminal (100); A connector body (200) is provided with a connecting cavity inside, the connecting terminal (100) is provided on one of the side walls of the connecting cavity, and part of the connecting terminal (100) is located in the connecting cavity, and a threading hole (210) is provided on the side wall of the connecting cavity opposite to the connecting terminal (100), and the external wiring harness passes through the threading hole (210) and is welded to the connecting terminal (100).

2. The high current connector according to claim 1, characterized in that: In the direction from the threading hole (210) to the connecting terminal (100), the side wall of the threading hole (210) is configured as an inwardly contracted inclined guide surface.

3. The high current connector according to claim 1, characterized in that: There are a plurality of threading holes (210), and the plurality of threading holes (210) are arranged at intervals on the connector body (200), and at least two of the threading holes (210) have different diameters. The connecting terminal (100) and the connecting terminal (100) are both arranged corresponding to the threading holes (210).

4. The high current connector according to claim 1, characterized in that: The plurality of threading holes (210) are spaced apart along the length direction of the connector body (200), and the centers of the threading holes (210) with the same diameter are on the same horizontal line.

5. The high current connector according to claim 3, characterized in that: The connector body (200) further comprises a plurality of partition plates (220), wherein the plurality of partition plates (220) are arranged at intervals in the connection cavity. When the plurality of connection terminals (100) are located in the connection cavity, the partition plates (220) are arranged between two adjacent connection terminals (100).

6. The high current connector according to claim 1, characterized in that: The high-current connector further comprises a top plate (300) and a bottom plate (400), and the connection cavity penetrates the connector body (200) along the height direction; The top plate (300) is detachably arranged at the top opening of the connecting cavity, and the bottom plate (400) is detachably arranged at the bottom opening of the connecting cavity.

7. The high current connector according to claim 6, characterized in that: The upper end surface of the connector body (200) is provided with at least one connecting column (230), and correspondingly, the top plate (300) is provided with a connecting hole, and the top plate (300) is detachably connected to the connecting column (230) through the connecting hole.

8. The high current connector according to claim 7, characterized in that: A first abutting protrusion (310) is provided in the middle of the top plate (300). When the top plate (300) is connected to the connecting column (230), the first abutting protrusion (310) abuts against the inner wall of the top end of the connecting cavity.

9. The high current connector according to claim 6, characterized in that: The two opposite side walls of the connector body (200) are provided with snap-fitting protrusions (240), and the bottom plate (400) is correspondingly provided with two snap-fitting buckles (410), and the two snap-fitting buckles (410) are snap-fitted to the two snap-fitting protrusions (240) in a one-to-one correspondence.

10. The high current connector according to claim 9, characterized in that: A second abutting protrusion (420) is provided in the middle of the bottom plate (400), and when the buckle (410) is engaged with the corresponding engaging protrusion (240), the second abutting protrusion (420) abuts against the inner wall of the bottom end of the connecting cavity.

Images