A high voltage direct current connector

Abstract

The utility model relates to a kind of high-voltage direct-current connectors, including connector main body, X safety capacitor, Y safety capacitor, positive pole copper bar, negative pole copper bar, ground copper bar and installation slot, the X safety capacitor, Y safety capacitor, positive pole copper bar, negative pole copper bar and ground copper bar are all installed on installation slot, the installation slot is installed on connector main body, the X safety capacitor is respectively connected with positive pole copper bar and negative pole copper bar, the Y safety capacitor is respectively connected with ground copper bar and positive pole copper bar, the Y safety capacitor is respectively connected with ground copper bar and negative pole copper bar, the positive pole copper bar, negative pole copper bar and ground copper bar are all for folding piece structure, for tightly fitting installation slot and connector main body.Positive pole copper bar, negative pole copper bar and ground copper bar are all set to folding piece structure, can save the space of motor controller, reduce the space of internal filter, realize smaller electric control volume, higher power density.

Description

Technical Field

[0001] This utility model relates to the field of high voltage DC connector technology, and in particular to a high voltage DC connector. Background Technology

[0002] The motor controller is a core component in the design of electric and hybrid power systems, primarily responsible for DC-to-AC conversion and controlling motor torque and speed. In recent years, with market development, the switching frequency of motor controller power modules has been continuously increasing, while customer requirements for EMC (Electronic Mobility Compatibility) of motor controllers have also been rising, making the EMC issues of the entire controller system more prominent.

[0003] Currently, some high-voltage DC connectors lack electromagnetic compatibility (EMC) capabilities, while others only have a grounded shield, resulting in limited EMC. To ensure good EMC capabilities (differential and common-mode interference), most controllers incorporate complex, multi-stage filter structures, occupying significant internal space and increasing material, manufacturing, and installation costs.

[0004] Utility model patent CN210123877U discloses a controller bus input device, including a fixed base, a positive copper busbar, a negative copper busbar, an X capacitor, and two Y capacitors. The positive copper busbar is mounted on the fixed base, the negative copper busbar is mounted on the fixed base, the X capacitor is mounted on the fixed base and its two terminals are respectively connected to the positive copper busbar and the negative copper busbar; and the two Y capacitors are mounted on the fixed base, one Y capacitor's two terminals are respectively connected to the positive copper busbar and the ground wire, and the other Y capacitor's two terminals are respectively connected to the negative copper busbar and the ground wire. The positive and negative copper busbars in this patent are both straight sheets, resulting in a large overall size, and there is still room for size reduction.

[0005] Therefore, providing a high-voltage DC connector that can improve electromagnetic compatibility and reduce size is an urgent problem to be solved. Utility Model Content

[0006] The purpose of this invention is to overcome the defects of the existing technology and provide a high-voltage DC connector.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] According to one aspect of this utility model, a high-voltage DC connector is provided, comprising a connector body, an X-type safety capacitor, a Y-type safety capacitor, a positive copper busbar, a negative copper busbar, a grounding copper busbar, and a mounting slot. The X-type safety capacitor, Y-type safety capacitor, positive copper busbar, negative copper busbar, and grounding copper busbar are all mounted on the mounting slot, which is mounted on the connector body. The X-type safety capacitor is connected to both the positive and negative copper busbars, and the Y-type safety capacitor is connected to both the grounding and positive copper busbars. The positive, negative, and grounding copper busbars are all folded structures for tightly fitting the mounting slot and the connector body.

[0009] As a preferred technical solution, the cross-sections of the positive copper busbar, the negative copper busbar, and the grounding copper busbar are all L-shaped.

[0010] As a preferred technical solution, the connector further includes a connecting part, which is installed on the positive copper busbar, the negative copper busbar and the grounding copper busbar.

[0011] As a preferred technical solution, both the X safety capacitor and the Y safety capacitor include pins, which are mounted on the connection parts of the corresponding positive copper busbar, negative copper busbar and ground copper busbar.

[0012] As a preferred technical solution, the mounting slot includes an X-safety capacitor mounting slot and a Y-safety capacitor mounting slot, wherein the X-safety capacitor is installed in the X-safety capacitor mounting slot and the Y-safety capacitor is installed in the Y-safety capacitor mounting slot.

[0013] As a preferred technical solution, the positive copper busbar and the negative copper busbar are respectively installed on both sides of the X safety capacitor mounting slot, and the grounding copper busbar is installed on both sides of the Y safety capacitor mounting slot.

[0014] As a preferred technical solution, the X safety capacitor and the Y safety capacitor are perpendicular to each other.

[0015] As a preferred technical solution, the connector further includes a grounding bushing, which is mounted on the connector body.

[0016] As a preferred technical solution, the grounding bushing and the grounding copper busbar are connected.

[0017] As a preferred technical solution, the connector further includes a sealing ring, which is mounted on the connector body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this utility model, the positive copper busbar, negative copper busbar, and grounding copper busbar are all set as folded structures. The X safety capacitor and Y safety capacitor are connected to the positive copper busbar, negative copper busbar, and grounding copper busbar respectively. The X safety capacitor and Y safety capacitor are installed on the connector body, which can save space in the motor controller, reduce the space of the internal filter, and achieve a smaller electronic control volume and higher power density.

[0020] 2. This utility model sets the positive copper busbar, negative copper busbar and grounding copper busbar as L-shaped flap structures, which fits the connector better, reduces the overall size of the connector, reduces the design complexity of the internal structure and the investment in early research and development, and saves costs.

[0021] 3. This utility model has connecting parts on the positive copper busbar, negative copper busbar and grounding copper busbar for placing the pins of the positive copper busbar, negative copper busbar and grounding copper busbar.

[0022] 4. This utility model directly welds the safety capacitor to the copper busbar, eliminating the need to weld the capacitor to the printed circuit board and then tighten it with screws. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the rear structure of this utility model;

[0026] Figure 4 This is an assembly diagram of the present invention;

[0027] 1. Connector body; 2. X safety capacitor; 3. Y safety capacitor; 4. Sealing ring; 5. Electrical control housing; 6. Fastening screw; 11. Positive copper busbar; 12. Negative copper busbar; 13. Grounding copper busbar; 14. Grounding bushing; 31. First Y safety capacitor; 32. Second Y safety capacitor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0029] Example 1

[0030] like Figures 1-4As shown, a high-voltage DC connector includes a connector body 1, an X-type safety capacitor 2, a Y-type safety capacitor 3, a positive copper busbar 11, a negative copper busbar 12, a grounding copper busbar 13, and a mounting slot. The X-type safety capacitor 2, the Y-type safety capacitor 3, the positive copper busbar 11, the negative copper busbar 12, and the grounding copper busbar 13 are all mounted on the mounting slot, which is mounted on the connector body 1. The X-type safety capacitor 2 is connected to the positive copper busbar 11 and the negative copper busbar 12 respectively. The Y-type safety capacitor 3 is connected to the grounding copper busbar 13 and the positive copper busbar 11 respectively. The positive copper busbar 11, the negative copper busbar 12, and the grounding copper busbar 13 are all folded structures for tightly fitting the mounting slot and the connector body 1.

[0031] In this embodiment, the connector consists of a high-voltage DC connector body 1, an X-safety capacitor 2, a Y-safety capacitor 3, and a sealing ring 4. The high-voltage connector body 1 is an integral injection-molded structure, specifically including a positive copper busbar 11, a negative copper busbar 12, a grounding copper plate 13, and a grounding screw bushing 14. The X-safety capacitor 2 and the Y-safety capacitor 3 are installed in the mounting slots of the high-voltage DC connector. The Y-safety capacitor 3 includes a first Y-safety capacitor 31 and a second Y-safety capacitor 32. The pins of the X-safety capacitor 2 are soldered to the positive copper busbar 11 and the negative copper busbar 12, respectively. The two pins of the first Y-safety capacitor 31 are soldered to the positive copper busbar 11 and the grounding copper busbar 13, respectively. The two pins of the second Y-safety capacitor 32 are soldered to the negative copper busbar 12 and the grounding copper busbar 13, respectively. Soldering slots are provided at the soldering points of the positive copper busbar 11, the negative copper busbar 12, and the grounding copper busbar 13.

[0032] After the X-safety capacitor 2 and Y-safety capacitor 3 are installed on the high-voltage connector body and soldered, they are then fixed with adhesive.

[0033] The cross-sections of the positive copper busbar 11, the negative copper busbar 12, and the grounding copper busbar 13 are all L-shaped.

[0034] The connector also includes a connecting part, which is mounted on the positive copper busbar 11, the negative copper busbar 12 and the grounding copper busbar 13.

[0035] Both the X safety capacitor 2 and the Y safety capacitor 3 include pins, which are installed on the connection parts of the corresponding positive copper busbar 11, negative copper busbar 12 and ground copper busbar 13.

[0036] The mounting slot includes an X-safety capacitor mounting slot and a Y-safety capacitor mounting slot. The X-safety capacitor 2 is installed in the X-safety capacitor mounting slot, and the Y-safety capacitor 3 is installed in the Y-safety capacitor mounting slot.

[0037] The positive copper busbar 11 and the negative copper busbar 12 are respectively installed on both sides of the X safety capacitor mounting slot, and the grounding copper busbar 13 is installed on both sides of the Y safety capacitor mounting slot.

[0038] The X safety capacitor 2 and the Y safety capacitor 3 are perpendicular to each other.

[0039] The connector also includes a grounding bushing 14, which is mounted on the connector body 1.

[0040] The grounding bushing 14 is connected to the grounding copper busbar 13.

[0041] The connector also includes a sealing ring 4, which is mounted on the connector body 1.

[0042] In this embodiment, the functions of each component are as follows:

[0043] Connector body 1: Ensures energy transfer, transmitting electrical energy back and forth between the electronic control unit and the battery pack.

[0044] X-Safety Capacitor 2: A capacitor connected between the positive and negative terminals to suppress differential mode interference.

[0045] Y-type safety capacitor 3: Y-type capacitors are capacitors that are connected across the positive and negative terminals and ground respectively. They usually appear in pairs to suppress common-mode interference.

[0046] Positive copper busbar 11: Transmits positive current.

[0047] Negative copper busbar 12: Transmits negative current.

[0048] Grounding screw bushing 14: When the screw is tightened, the surface of the bushing contacts the housing, thereby grounding.

[0049] Grounding copper busbar 13: connected to the grounding bushing, thereby grounding.

[0050] Sealing ring 4: Ensures a seal between the connector and the electrical control housing.

[0051] The aforementioned high-voltage connector is installed at the DC input of the motor controller housing. Positive and negative copper busbars enable DC transmission, and sealing ring 4 provides a seal. Safety capacitor 2 (X-type) is connected to the positive and negative copper busbars via pin soldering, suppressing differential-mode interference during electrical control operation. Safety capacitor 3 (Y-type) is connected to both the positive / grounded and negative / grounded copper busbars via pin soldering, suppressing common-mode interference during electrical control operation. This improves the electromagnetic compatibility of the entire system.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A high-voltage DC connector, characterized in that, The connector includes a connector body (1), an X-type safety capacitor (2), a Y-type safety capacitor (3), a positive copper busbar (11), a negative copper busbar (12), a grounding copper busbar (13), and a mounting slot. The X-type safety capacitor (2), the Y-type safety capacitor (3), the positive copper busbar (11), the negative copper busbar (12), and the grounding copper busbar (13) are all mounted on the mounting slot, which is mounted on the connector body (1). The X-type safety capacitor (2) is connected to the positive copper busbar (11) and the negative copper busbar (12) respectively. The Y-type safety capacitor (3) is connected to the grounding copper busbar (13) and the positive copper busbar (11) respectively. The Y-type safety capacitor (3) is connected to the grounding copper busbar (13) and the negative copper busbar (12) respectively. The positive copper busbar (11), the negative copper busbar (12), and the grounding copper busbar (13) are all folded structures for tightly fitting the mounting slot and the connector body (1).

2. A high-voltage DC connector according to claim 1, characterized in that, The cross-sections of the positive copper busbar (11), negative copper busbar (12), and grounding copper busbar (13) are all L-shaped.

3. A high-voltage DC connector according to claim 1, characterized in that, The connector also includes a connecting part, which is mounted on the positive copper busbar (11), the negative copper busbar (12), and the grounding copper busbar (13).

4. A high-voltage DC connector according to claim 3, characterized in that, Both the X safety capacitor (2) and the Y safety capacitor (3) include pins, which are mounted on the connection parts of the corresponding positive copper busbar (11), negative copper busbar (12) and ground copper busbar (13).

5. A high-voltage DC connector according to claim 1, characterized in that, The mounting slot includes an X-safety capacitor mounting slot and a Y-safety capacitor mounting slot. The X-safety capacitor (2) is installed in the X-safety capacitor mounting slot, and the Y-safety capacitor (3) is installed in the Y-safety capacitor mounting slot.

6. A high-voltage DC connector according to claim 5, characterized in that, The positive copper busbar (11) and the negative copper busbar (12) are respectively installed on both sides of the X safety capacitor mounting slot, and the grounding copper busbar (13) is installed on both sides of the Y safety capacitor mounting slot.

7. A high-voltage DC connector according to claim 5, characterized in that, The X safety capacitor (2) and the Y safety capacitor (3) are perpendicular to each other.

8. A high-voltage DC connector according to claim 1, characterized in that, The connector also includes a grounding bushing (14) which is mounted on the connector body (1).

9. A high-voltage DC connector according to claim 8, characterized in that, The grounding bushing (14) and the grounding copper busbar (13) are connected.

10. A high-voltage DC connector according to claim 1, characterized in that, The connector also includes a sealing ring (4), which is mounted on the connector body (1).

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