Socket of high-voltage interlocking connector and high-voltage interlocking connector

Abstract

The present application relates to a socket of a high voltage interlock connector and a high voltage interlock connector, the socket comprising: a socket housing for being mounted to a fixed part, the socket housing having a housing front portion facing a plug to be paired, a housing rear portion facing the fixed part to be mounted, and a mounting portion between the housing front portion and the housing rear portion, the socket shell is mounted to the fixing part through the mounting part; an inner sheath accommodated in the socket housing; an electromagnetic shielding member located between the socket housing and the inner sheath to shield electromagnetic radiation interference; the high-voltage pin header is arranged in the inner sheath to be connected with a high-voltage cable; and an interlock terminal mounted in the inner sheath and serving as part of a low-voltage loop of the high-voltage interlock connector, in which the electromagnetic shield is formed as a one-piece component. By providing the integrated shielding piece, the problem of electromagnetic shielding leakage in the high-voltage interlocking connection process of the socket is solved, and the safety of a new energy vehicle using the high-voltage interlocking connector is ensured.

Description

Technical Field

[0001] The present application relates to a high-voltage interlock connector for a vehicle, and in particular to a socket of the high-voltage interlock connector. Background Art

[0002] There are many high-voltage interlock connections (generally called hazardous voltage interlock circuits, or HVIL) involved in new energy vehicles. High-voltage interlock is a safety feature that uses a low-voltage circuit to monitor the integrity of the high-voltage circuit, that is, to monitor the electrical integrity of the vehicle's high-voltage components, electrical lines, connectors, and covers through a low-voltage circuit to ensure that, for example, a high-voltage connector that has been unplugged is no longer energized after being unplugged, thereby avoiding the risk of electric shock to people who may come into contact with the high-voltage components of the electric vehicle.

[0003] The high-voltage interlock connector is an indispensable component in new energy vehicles. When the high-voltage power plug-in is loose or not properly connected, the continuity between the interlocking terminals on the low-voltage side can be quickly detected to determine whether the connection of the high-voltage power connector is reliable. Once the vehicle controller detects the disconnection of the low-voltage interlock terminal, it is determined that the high-voltage circuit is disconnected. At this time, the fault can be transmitted to the vehicle controller through a feedback signal to cut off the high-voltage supply, thereby bringing safety protection to vehicle users and related personnel.

[0004] In existing high-voltage interlocking connectors, electromagnetic leakage is often found at the AC connector, which greatly reduces the electromagnetic shielding effect of the device and may even become a safety hazard in severe cases.

[0005] Therefore, it is necessary to provide a high-voltage interlock connector that can enhance the electromagnetic shielding effect of the high-voltage interlock connector, especially to improve the electromagnetic shielding effect of the socket part thereof. Utility Model Content

[0006] The present application aims to provide a high-voltage interlocking connector capable of enhancing the electromagnetic shielding effect of the high-voltage interlocking connector, in particular to improve the electromagnetic shielding effect of the socket part of the high-voltage interlocking connector.

[0007] To achieve the above-mentioned objectives, the present application provides a socket of a high-voltage interlocking connector, comprising: a socket shell for being installed to a fixed component, the socket shell having a shell front facing a plug to be paired, a shell rear facing the fixed component to be installed, and a mounting portion located between the shell front and the shell rear, the socket shell being installed to the fixed component through the mounting portion; an inner sleeve accommodated in the socket shell; an electromagnetic shielding member located between the socket shell and the inner sleeve to shield electromagnetic radiation interference; a high-voltage pin row installed in the inner sleeve to be connected to a high-voltage cable; and an interlocking terminal installed in the inner sleeve and serving as a part of a low-voltage circuit of the high-voltage interlocking connector, wherein the electromagnetic shielding member is formed as an integral component.

[0008] Optionally, the electromagnetic shielding element is made of metal material.

[0009] Optionally, the socket shell and the inner sheath are made of insulating material.

[0010] Optionally, the electromagnetic shielding component has an opening on each side, and the inner sheath has an inner sheath buckle matched with the opening, and when the inner sheath is installed in the electromagnetic shielding component, the inner sheath buckle passes through the opening and engages with the opening.

[0011] Optionally, a sealing member is further included on the mounting portion, wherein the sealing member forms a sealed connection between the socket housing and the fixing member when the socket housing is mounted to the fixing member.

[0012] Optionally, the socket shell has an opening that cooperates with the inner sleeve buckle of the inner sleeve, and when the inner sleeve, the electromagnetic shielding component and the socket shell are installed together, the inner sleeve buckle (passes through the opening of the socket shell to fix the inner sleeve, the electromagnetic shielding component and the socket shell together.

[0013] Optionally, the electromagnetic shielding member has a plurality of spring contacts extending integrally from the electromagnetic shielding member for external electrical connection.

[0014] Optionally, the spring contact piece is made by cutting and bending a portion of the electromagnetic shielding element.

[0015] Optionally, the rear portion of the socket housing has a recess, and the spring contact is fixed to a bottom edge of the recess of the socket housing when the inner sleeve, the electromagnetic shielding element and the socket housing are assembled together.

[0016] The present application also relates to a high-voltage interlock connector, which includes a socket of the high-voltage interlock connector as described above, and a plug used in conjunction with the socket, wherein the plug has a mating interlock terminal corresponding to the interlock terminal, and the interlock terminal and the mating interlock terminal form a low-voltage circuit.

[0017] According to the present application, by providing an integrated shielding component for the socket of the high-voltage interlocking connector, while ensuring the realization of the high-voltage interlocking function, the electromagnetic shielding leakage problem of the socket of the high-voltage interlocking connector during the high-voltage interlocking connection with the corresponding plug is improved, the interference of electromagnetic radiation on the vehicle's electronic components is reduced, and the safety and stability of new energy vehicles using the high-voltage interlocking connector are ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other aspects of the present application will be more clearly understood in conjunction with the accompanying drawings. It should be noted that the drawings are only schematic and are not drawn to scale. In the drawings:

[0019] Figure 1 Schematically showing a perspective view of a socket of a high voltage interlock connector according to the present application;

[0020] Figure 2 schematically shows an exploded perspective view of a socket of a high voltage interlock connector according to the present application; and

[0021] Figure 3 A perspective view schematically shows an electromagnetic shielding member of a socket of a high voltage interlock connector according to the present application. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application are described in detail below in conjunction with examples. It should be understood by those skilled in the art that these embodiments are not intended to limit the present application in any way, and the features in the various embodiments may be combined with each other. In different drawings, the same components are represented by the same reference numerals, and for the sake of brevity, some components are omitted, but this does not mean that other components are excluded. It should be understood that the size, proportional relationship and number of components of the various components in the drawings are not intended to limit the present application.

[0023] The high-voltage interlocking connector is used to connect high-voltage input and output components. Under high-frequency conditions, the high-voltage wiring harness has an antenna effect and generates radiation interference to the outside, especially when the switch is on and off. Therefore, the shielding effectiveness of the high-voltage wiring harness and connector is very important. Electromagnetic shielding covers can be made of electromagnetic shielding materials of appropriate thickness, such as metal, to use the skin effect to prevent high-frequency electromagnetic waves from entering the conductor.

[0024] The present application adopts a new electromagnetic shielding component to improve the electromagnetic shielding effect in the socket of the high-voltage interlocking connector.

[0025] Figure 1 A perspective view of the socket portion of the high voltage interlock connector of the present application, Figure 2 The present invention is an exploded perspective view of the main components of the socket of the high-voltage interlock connector. The socket of the high-voltage interlock connector is used to be plugged and matched with the plug part of the high-voltage interlock connector to connect the high-voltage input and output in the electric vehicle to transmit high-voltage current and signals. The socket of the high-voltage connector mainly includes a socket shell 1, an inner sheath 2 accommodated in the socket shell 1, an electromagnetic shielding member 3 located between the socket shell 1 and the inner sheath 2, and a high-voltage pin 4 installed in the inner sheath 3. The high-voltage pin 4 is used to connect to a high-voltage cable not shown in the figure to accept high-voltage input. The socket of the high-voltage connector also includes an interlocking terminal 5 of a low-voltage circuit, which will cooperate with the low-voltage interlocking terminal in the corresponding high-voltage interlock connector plug to form a low-voltage circuit in the high-voltage interlock connector. As mentioned above, the disconnection of the low-voltage circuit is detected by the control circuit in the vehicle. The socket of the high-voltage interlock connector in the present application also includes an interlocking terminal positioning member for the interlocking terminal 5 and a pin positioning member for the high-voltage pin 4 (not shown in the figure) to fix the interlocking terminal 5 and the high-voltage pin 4 in the inner sheath 2.

[0026] In this application, for the sake of clarity, the direction of the socket facing the plug is called the front side, and the direction to be installed in the cabinet and connected to the AC harness is called the rear side. Figure 1 In the following description, the socket of the high voltage interlock connector is also referred to as the socket for simplicity.

[0027] The socket housing 1 is generally elliptical and cylindrical, having an elliptical cylindrical housing front portion 15 and a housing rear portion 16, and a mounting portion 14 located between the housing front portion 15 and the housing rear portion 16. The mounting portion 14 is in the form of a rectangular flange, but is not limited thereto, and can also be set to other shapes as needed. A plurality of mounting holes 17 (four are shown in the figure, but are not limited thereto) are provided on the mounting portion 14, which are used to mount the socket housing 1 from the rear side on, for example, a control cabinet of a vehicle, by means of, for example, bolts.

[0028] To this end, a seal 6, such as a rubber seal ring with a circular cross section, is provided in the socket, which is installed between the socket housing 1 and the cabinet to perform waterproof sealing to prevent moisture or dust from entering the cabinet. A groove (not shown) may be provided on the rear surface of the mounting portion 14, which may be an elliptical shape corresponding to the shape of the rear portion 16 of the housing and located radially outside the rear portion 16 of the housing, and the seal 6 may be installed in the groove, the depth of the groove being less than the diameter of the seal 6, so that the seal 6 may protrude from the rear surface of the mounting portion 14, and when the mounting portion 14 is installed in the cabinet, the seal 6 is deformed, thereby achieving radial sealing.

[0029] Of course, the sealing member 6 may also have a non-circular cross section, for example, a rectangular cross section, etc., but is not limited thereto.

[0030] The rear shell 16 of the socket shell 1 is provided with two openings 11 located on the short sides to cooperate with the inner sleeve buckle 21 on the inner sleeve 2 to be described later. The rear shell 16 of the socket shell 1 is also provided with a recess 12 located between the two openings 11 for cooperation with the spring contact 33 of the electromagnetic shielding component 3 to be described later.

[0031] like Figure 2 As shown, the inner sheath 2 comprises an inner sheath front section 23, an inner sheath rear section 24 slightly larger in radial dimension than the inner sheath front section 23, and an inner sheath transition section 22 located between the inner sheath front section 23 and the inner sheath rear section 24, and two inner sheath buckles 21 extending outward are provided on the short side of the inner sheath rear section 24, and the inner sheath buckles 21 are matched with the openings 11 on the socket shell 1. The front edge of the inner sheath 2 also has a fixing buckle 25 for fixing to the electromagnetic shielding member 3 and then to the socket shell 1.

[0032] The electromagnetic shielding member 3 also includes a shielding member front section 35, a shielding member rear section 36 having a radial dimension slightly larger than that of the shielding member front section 35, and a shielding member transition portion 32 located between the shielding member front section 35 and the shielding member rear section 36. The shielding member rear section 36 has two openings 31 on the short side, and the openings 31 are used to cooperate with the inner jacket buckle 21 of the inner jacket 2. When the inner jacket 2 is installed in the electromagnetic shielding member 3, the inner jacket buckle 21 protrudes through the openings 31, and the inner jacket front section 23 is located in the shielding member front section 35, the inner jacket rear section 24 is located in the shielding member rear section 36, and the inner jacket transition portion 22 abuts against the shielding member transition portion 32, and the fixing buckle 25 of the inner jacket 2 is matched to the joint portion 34 at the front edge of the electromagnetic shielding member 3.

[0033] Figure 3, a perspective view of the electromagnetic shielding member 3 in the socket of the high-voltage interlocking connector according to the present application is shown in FIG. A plurality of (e.g., 3 as shown in the figure) spring contacts 33 protruding from the surface of the rear section 36 of the shielding member are also provided on the rear section 36 of the electromagnetic shielding member 3. The spring contacts 33 are formed by partially cutting the material of the electromagnetic shielding member 3 and bending the cut sheet. The electromagnetic shielding member 3 is integrally formed from a sheet of a material having an electromagnetic shielding function, such as a metal material, and is made, for example, by various conventional processing methods such as forging. The electromagnetic shielding member 3 can be cut along three sides of a generally rectangular shape while keeping one side of the cut connected to the shielding member, and the unconnected part of the cut is bent outward to form, for example, a hook-shaped spring contact 33. Of course, the shape of the spring contact 33 can be set to other shapes other than the hook, and is not limited thereto.

[0034] The electromagnetic shielding member 3 may also be formed into an integral piece by welding or other processing of metal material sheets.

[0035] When the assembled inner sleeve 2 and electromagnetic shielding component 3 are installed into the socket shell 1, the fixing clip 25 of the inner sleeve 2 is engaged to the front edge 13 of the socket shell 1. In addition, the inner sleeve clip 21 exposed from the opening 31 of the electromagnetic shielding component 3 is engaged with the opening 11 on the rear portion 16 of the socket shell 1. At the same time, the spring contact 33 on the shielding component rear section 36 of the electromagnetic shielding component 3 is combined with the bottom edge of the recess 12 of the socket shell 1.

[0036] The socket shown in the figure is a 3-core socket, for which the cross-sections of the socket shell 1, the electromagnetic shielding member 3 and the inner sheath 2 are all elliptical. However, the present application is not limited to this, and can also be modified to other corresponding shapes according to the layout of the high-voltage pin header. The socket is also not limited to 3 cores, and can also be, for example, a 1-core, 2-core, 4-core socket, etc. The cross-sectional shapes of the socket shell 1, the electromagnetic shielding member 3 and the inner sheath 2 of the present application can also be set to other shapes such as round, square, rectangular, etc. according to specific needs, and are not limited to this.

[0037] As mentioned above, the socket includes a high-voltage pin header 4 to be connected to a high-voltage cable (not shown), the high-voltage pin header 4 is installed in the inner sheath 2 and extends through the inner sheath 2 so as to be accessible from the front side of the socket housing 1 for connection with a plug of a matching high-voltage interlock connector. The pin header positioning member of the high-voltage pin header 4 is fixed to the high-voltage pin header 4 from the front side of the socket housing 1 to position and fix the high-voltage pin header 4.

[0038] As mentioned above, the socket also includes an interlocking terminal 5 for a low-voltage circuit. The interlocking terminal 5 can be installed into the inner sleeve 2 from the rear side of the socket housing 1, and at the same time, an interlocking terminal positioning piece (not shown in the figure) is installed into the inner sleeve 2 from the front side of the socket housing 1 to position and fix the interlocking terminal 5.

[0039] Optionally, a rear end cover member may be provided on the rear side of the socket to cover and fix the high voltage pin header 4 and cables, etc.

[0040] The socket housing 1 and the inner sheath 2 , as well as the pin header fixing member and the interlocking terminal fixing member can all be made of insulating materials such as resin materials, for example, they can be formed by injection molding or the like.

[0041] When assembling the socket of the high-voltage connector according to the present application, first, the inner sheath 2 is inserted into the electromagnetic shielding component 3, so that the inner sheath clip 21 on the inner sheath 2 passes through the opening 31 on the electromagnetic shielding component 3, and the inner sheath transition portion 22 of the inner sheath 2 abuts against the shielding component transition portion 32 of the electromagnetic shielding component 3, thereby fixing the inner sheath 2 and the electromagnetic shielding component 3 relatively.

[0042] Next, the assembled inner sleeve 2 and electromagnetic shielding component 3 are inserted into the socket shell 1, so that the inner sleeve buckle 21 of the inner sleeve 2 passing through the opening 31 of the electromagnetic shielding component 3 is buckled into the opening 11 on the socket shell 1, and at the same time, the spring contact 33 of the electromagnetic shielding component 3 is combined with the bottom edge of the recess 12 of the socket shell 1, and the fixing buckle 25 of the inner sleeve 2 at the joint 34 of the front edge of the electromagnetic shielding component 3 is engaged with the front edge 13 of the socket shell 1, so as to realize the firm connection and tight fit among the electromagnetic shielding component 3, the inner sleeve 2 and the socket shell 1.

[0043] Then, the sealing member 6 is arranged in a groove (not shown in the figure) provided on the rear surface of the mounting portion 14 of the socket housing 1, surrounding the rear portion 16 of the socket housing 1, the electromagnetic shielding member 3 and the rear section 36 of the shielding member, and the rear section 24 of the inner sheath 2. Subsequently, the interlocking terminal positioning member and the pin row positioning member (not shown in the figure) are installed into the inner sheath 2 from the front side of the socket. Finally, the high-voltage pin row 4 and the interlocking terminal 5 are installed into the inner sheath 2 from the rear side of the socket and fixed to the interlocking terminal positioning member and the pin row positioning member, thereby completing the assembly of the main components of the socket of the entire high-voltage interlocking connector. After that, the socket can be installed into the cabinet and the corresponding wiring harness connection can be made.

[0044] The electromagnetic shielding component 3 in the present application can be made of various materials that can shield electromagnetic wave radiation, such as metal materials, such as silver, copper, aluminum, nickel, etc. and their alloys, but not limited to these. It can be set to have other components as needed, as long as it can achieve conductivity and electromagnetic shielding and has a certain strength.

[0045] The socket of the high-voltage interlock connector in the present application is used, for example, in the high-voltage interlock connector of new energy vehicles for high-voltage connection of various devices. It is paired with the plug of the high-voltage interlock connector. In the plug, a matching interlock terminal that is paired with the interlock terminal 5 is also provided accordingly. When the plug and the socket are connected, if the connection between the interlock terminals is disconnected, it indicates that the high-voltage connection between the plug and the socket is disconnected. At this time, no high-voltage power will be supplied to the corresponding connecting components, ensuring the safety of the vehicle.

[0046] However, the socket of the high-voltage interlock connector of the present application is not limited to this application, and can also be used in other places where high-voltage connection is required. The supply of high-voltage power is controlled by the connection signal of the low-voltage interlock terminal to achieve safety.

[0047] In the present application, the electromagnetic shielding member 3 disposed between the inner sheath 2 and the socket shell 1 is set as an integrated component, which is made of electromagnetic shielding materials such as metal materials, and the skin effect is used to prevent high-frequency electromagnetic waves from entering the conductor to interfere. Because the electromagnetic shielding member 3 is an integrated member, compared with the shielding member with gaps assembled from multiple sections, the gaps and channels where electromagnetic leakage may occur are reduced, which can greatly improve the electromagnetic shielding performance of the socket and even the entire connector, and will not cause adverse interference to the vehicle signal due to the unshielded AC harness bus, the holes between the plug and the socket shell, and the various electromagnetic leakages at the overlap position of the AC harness as in the prior art, thereby improving the safety of vehicle driving. For example, in the electromagnetic shielding EMI (LV CE 6-40MHz) test of many existing high-voltage connectors, it is shown that there is electromagnetic leakage at the AC connector, and practice has shown that the addition of the integrated shielding member in the present application can significantly improve the existing 10mm 2 The shielding performance of the AC connector is greatly improved. The integrated electromagnetic shielding component in this application blocks the electromagnetic wave leakage path, and the final LV CE test result can meet the level 3 requirements of GB / T18655-2018.

[0048] The present application has been described in detail above in conjunction with specific embodiments. Obviously, the above description and the embodiments shown in the accompanying drawings should be understood as exemplary and do not constitute a limitation to the present application. For those skilled in the art, various modifications or changes can be made to the present application without departing from the spirit of the present application, and these modifications or changes do not depart from the scope of the present application.

Claims

1. A socket of a high voltage interlock connector, characterized in that: include: A socket housing (1) for being mounted to a fixed component, the socket housing (1) comprising a housing front portion (15) facing a plug to be matched, a housing rear portion (16) facing the fixed component to be mounted, and a mounting portion (14) located between the housing front portion (15) and the housing rear portion (16), the socket housing (1) being mounted to the fixed component via the mounting portion (14); An inner sheath (2) accommodated in the socket housing (1); An electromagnetic shielding member (3) located between the socket housing (1) and the inner sheath (2) for shielding electromagnetic radiation interference; A high-voltage pin header (4) installed in the inner sheath (2) to be connected to a high-voltage cable; and an interlock terminal (5) installed in the inner sheath (2) and serving as part of a low-voltage circuit of a high-voltage interlock connector, Wherein, the electromagnetic shielding element (3) is formed as an integrated component.

2. The socket of the high-voltage interlock connector according to claim 1, characterized in that: The electromagnetic shielding component (3) is made of metal material.

3. The socket of the high voltage interlock connector according to claim 1, characterized in that: The socket shell (1) and the inner sheath (2) are made of insulating material.

4. The socket of the high voltage interlock connector according to claim 1, characterized in that: The electromagnetic shielding component (3) has an opening (31) on both sides respectively, and the inner sheath (2) has an inner sheath buckle (21) that matches the opening (31); when the inner sheath (2) is installed in the electromagnetic shielding component (3), the inner sheath buckle (21) passes through the opening (31) and engages with the opening (31).

5. The socket of the high voltage interlock connector according to claim 1, characterized in that: It also comprises a sealing member (6) located on the mounting portion (14), wherein the sealing member (6) forms a sealed connection between the socket housing (1) and the fixing member when the socket housing (1) is mounted on the fixing member.

6. The socket of the high voltage interlock connector according to claim 1, characterized in that: The socket shell (1) has an opening that matches with an inner sleeve buckle (21) of the inner sleeve (2); when the inner sleeve (2), the electromagnetic shielding component (3) and the socket shell (1) are installed together, the inner sleeve buckle (21) passes through the opening of the socket shell (1) to fix the inner sleeve (2), the electromagnetic shielding component (3) and the socket shell (1) together.

7. The socket of the high voltage interlock connector according to any one of claims 1 to 6, characterized in that: The electromagnetic shielding member (3) has a plurality of spring contacts (33) extending integrally from the electromagnetic shielding member (3) for external electrical connection.

8. The socket of the high voltage interlock connector according to claim 7, characterized in that: The spring contact piece (33) is made by cutting and bending a part of the electromagnetic shielding element (3).

9. The socket of the high voltage interlock connector according to claim 7, characterized in that: The rear portion (16) of the socket housing (1) has a notch (12), and the spring contact (33) is fixed to the bottom edge of the notch (12) of the socket housing (1) when the inner sleeve (2), the electromagnetic shielding member (3) and the socket housing (1) are assembled together.

10. A high voltage interlocking connector, characterized in that: It comprises a socket of a high-voltage interlocking connector according to any one of claims 1 to 9, and a plug used in conjunction with the socket, the plug having a mating interlocking terminal corresponding to the interlocking terminal (5), the interlocking terminal (5) and the mating interlocking terminal forming a low-voltage circuit.

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