A European integrated charging socket

Abstract

The utility model belongs to the field of new energy automobile charging socket, concretely relates to a European standard integrated charging socket, including insulating shell, the tail cover of pressing plate and the AC contact column, DC contact column of cover buckle in both inner cavities, the side wall of AC contact column is provided with the convex limit along, and the first connecting assembly that cooperates with AC contact column includes the barb clamping portion that sets in the petal shape of the inner surface of tail cover of pressing plate and the sleeve that sets in the outer surface of tail cover of pressing plate, the convex limit along of AC contact column forms the abutment limit with barb clamping portion, the sleeve is provided with the sealing plug that is surrounded the wire in ring shape. The utility model adopts the closure shell cavity that is formed by the buckling of insulating shell and tail cover of pressing plate, and AC contact column passes barb clamping portion, and barb clamping portion is opened after AC contact column inserts, when the convex limit along on AC contact column passes barb clamping portion, forms limit, need not carry out ultrasonic welding, has simplified the installation procedure, improved assembly efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle charging sockets, specifically relating to a European standard integrated charging socket. Background Technology

[0002] Most existing charging sockets for European standard new energy vehicles do not integrate signal processing, requiring separate installation of signal and power ports. This results in numerous components, a complex structure, and significant assembly difficulties. With the rapid development of new energy electric vehicles, automakers are placing higher demands on the cost and assembly efficiency of downstream components.

[0003] Existing charging sockets do not have a quick-connect function. During assembly, the wires need to be pre-threaded through the tail cover and pressure plate, and then ultrasonic welding is performed. This causes inconvenience to welding and subsequent installation procedures.

[0004] Most existing European standard charging sockets have wires connected to the end, which is costly and has limited current carrying capacity. Currently, connecting aluminum busbars to the end of charging sockets is gradually becoming a trend.

[0005] Existing charging sockets typically have a single wire led out from the PE line and screwed onto the vehicle body using a copper lug terminal to achieve grounding. However, the current market demand is for simplified wiring, with the PE line grounded through the socket itself. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a European standard integrated charging socket, which features signal integration, quick plug-in, compatibility with large-size aluminum busbars, and common grounding of PE and fixed points.

[0007] The specific technical solution adopted in this utility model is as follows:

[0008] A European standard integrated charging socket includes an insulating shell, a pressure plate tail cover, and AC and DC contact posts fitted into the inner cavities of both. The insulating shell has through holes for the AC and DC contact posts to pass through. The pressure plate tail cover has a connecting assembly for connecting the AC and DC contact posts. The side wall of the AC contact post has a raised limiting edge. The first connecting assembly that mates with the AC contact post includes a petal-shaped barbed snap-fit ​​part on the inner surface of the pressure plate tail cover and a sleeve on the outer surface of the pressure plate tail cover. The raised limiting edge of the AC contact post and the barbed snap-fit ​​part form an abutment limiting. The AC connecting wire passes through the sleeve and is electrically connected to the AC contact post. A sealing plug that wraps around the wire in a ring shape is provided inside the sleeve.

[0009] The DC contact post is equipped with a second connecting component, which includes an aluminum busbar, a cable protection shell, and a cable screw. The DC contact post has an internal threaded hole at its tail end, and the aluminum busbar has a through hole. The aluminum busbar is fixedly connected to the DC contact post by means of the cable screw, and the cable protection shell is fastened to the end of the aluminum busbar.

[0010] The cable protection shell is connected to the groove on the aluminum busbar by means of a snap fastener. The cable protection shell is also provided with a protective push plate. The protective push plate is connected to the notch on the upper side of the cable protection shell by means of a snap fastener. The protective push plate covers the nut side of the cable screw.

[0011] The AC contact post passes through an AC circuit board with a through hole, and the protruding limiting edge of the AC contact post abuts against the AC circuit board to form an electrical connection. The DC contact post passes through a DC circuit board with a through hole, and the DC contact post is provided with a protruding ring structure, which abuts against the DC circuit board to form an electrical connection. The AC circuit board and the DC circuit board are respectively provided with surface mount resistors as temperature sensors.

[0012] The AC circuit board and DC circuit board are separately arranged and fixedly installed by means of support columns set on the insulating shell. The AC circuit board and DC circuit board are electrically connected by fisheye terminals.

[0013] The AC circuit board is also provided with a set of connecting pins, and the pressure plate tail cover is provided with a low-voltage plug sheath. After the pressure plate tail cover and the insulating shell are fastened together, the connecting pins are inserted into the low-voltage plug sheath to form a low-voltage plug connection plug.

[0014] The AC circuit board is provided with a torsion spring socket, and the low-voltage plug-in sheath is provided with CP contact post and PP contact post. The CP contact post, PP contact post and torsion spring socket are connected to the insulating shell by means of the fastening of the pressure plate tail cover.

[0015] It is also provided with a PE contact post, which has a shoulder that abuts against the AC circuit board. The tail end of the PE contact post is provided with a bolt hole, and the tail end of the PE contact post is connected to a PE copper busbar by means of a bolt. The other end of the PE copper busbar is provided with a through hole, and the through hole overlaps with a fixing hole of the insulating shell.

[0016] The beneficial effects of this utility model are:

[0017] This utility model uses an insulating shell and a pressure plate tail cover to form a closed cavity, and a sealing ring is set between the two to ensure sealing performance. The AC contact post is connected by a barbed snap-fit ​​part. After the AC contact post is inserted, the barbed snap-fit ​​part is opened. When the protruding limiting edge on the AC contact post passes through the barbed snap-fit ​​part, it forms a limit. Ultrasonic welding is not required, which simplifies the installation process and improves assembly efficiency. Attached Figure Description

[0018] Figure 1 This is an exploded view of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of an explosion in the middle and rear direction;

[0020] Figure 3 for Figure 1 A schematic diagram of an explosion in the lower middle direction;

[0021] Figure 4 This is a schematic diagram of the aluminum busbar and its protective casing.

[0022] Figure 5 This is a schematic diagram of the front of the socket after assembly.

[0023] Figure 6 for Figure 5 Schematic diagram of section AA;

[0024] Figure 7 This is a 3D diagram of the assembled socket;

[0025] Figure 8 for Figure 7 A schematic diagram of the rear side of the center socket;

[0026] Figure 9 This is a schematic diagram of a fisheye terminal;

[0027] In the attached diagram, 1. Insulating shell, 2. Pressure plate tail cover, 3. AC contact post, 4. DC contact post, 5. Barbed snap-fit ​​part, 6. AC connection wire, 7. Sealing plug, 8. Aluminum busbar, 9. Cable protection shell, 10. Cable screw, 11. Protective push plate, 12. AC circuit board, 13. DC circuit board, 14. Fisheye terminal, 15. Connecting pin, 16. Low voltage plug sheath, 17. Torsion spring socket, 18. CP contact post, 19. PP contact post, 20. PE contact post, 21. PE copper busbar, 22. Fixing hole. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] Specific implementation examples Figure 1As shown, this utility model is a European standard integrated charging socket, including an insulating shell 1, a pressure plate tail cover 2, and AC contact post 3 and DC contact post 4 fastened in the inner cavity of both. The insulating shell 1 is provided with through holes for the AC contact post 3 and DC contact post 4 to pass through. The pressure plate tail cover 2 is provided with a connecting assembly for connecting the AC contact post 3 and DC contact post 4. The side wall of the AC contact post 3 is provided with a raised limiting edge. The first connecting assembly that cooperates with the AC contact post 3 includes a petal-shaped barbed snap-fit ​​part 5 provided on the inner surface of the pressure plate tail cover 2 and a sleeve provided on the outer surface of the pressure plate tail cover 2. The raised limiting edge of the AC contact post 3 and the barbed snap-fit ​​part 5 form an abutment limiting. The AC connecting wire 6 passes through the sleeve and is electrically connected to the AC contact post 3. A sealing plug 7 that wraps around the wire in a ring shape is provided inside the sleeve.

[0030] like Figure 1 and Figure 7 , Figure 8 As shown, this utility model uses an insulating shell 1 and a pressure plate tail cover 2 to fasten together to form a closed shell cavity, and a sealing ring is set between the two to ensure sealing performance. The AC contact post 3 is connected by a barbed locking part 5. After the AC contact post 3 is inserted, the barbed locking part 5 is opened. When the protruding limiting edge on the AC contact post 3 passes through the barbed locking part 5, the petal-shaped rod of the barbed locking part 5 is supported by its own elasticity and restoring at the neck of the protruding limiting edge to form a limit. Under the pull of the AC connecting wire 6, the AC contact post 3 is restricted on the pressure plate tail cover 2. Ultrasonic welding is not required, which simplifies the installation process and improves the assembly efficiency.

[0031] like Figure 1 As shown, the sealing plug 7 can be fixed to the pressure plate tail cover 2 by secondary injection molding. After the AC contact post 3 is inserted into the sleeve, the sealing plug 7 forms a sealing fit between the two. Similarly, the DC contact post 4 is also provided with a sealing ring, which is used to form an abutment fit with the protruding sleeve on the pressure plate tail cover 2. The sealing plug 7 is formed by injection molding, which reduces the number of parts, makes the structure compact, improves assembly efficiency, and saves costs.

[0032] like Figure 3 As shown, a drainage hole is also provided at the bottom of the insulating shell 1, such as... Figure 1 As shown, the unlabeled part on the left side of the insulating shell 1 is an electronic lock, which is fixed to the insulating shell 1 by bolts.

[0033] Furthermore, such as Figure 3 and Figure 4As shown, the DC contact post 4 is equipped with a second connecting component, which includes an aluminum busbar 8, a cable protection shell 9, and a cable screw 10. The DC contact post 4 has an internal threaded hole at its tail end, and the aluminum busbar 8 has a through hole. The aluminum busbar 8 is fixedly connected to the DC contact post 4 by means of the cable screw 10, and the cable protection shell 9 is fastened to the end of the aluminum busbar 8.

[0034] The aluminum busbar 8 is fixedly connected to the DC contact post 4 by the cable screw 10, while the pressure plate tail cover 2 is clamped between the aluminum busbar 8 and the cable screw 10 to form a fixation. The cable protection shell 9 is fitted on the end of the aluminum busbar 8 for protection of the end and the hole of the cable screw 10.

[0035] like Figure 4 As shown, the cable protection shell 9 is connected to the groove on the aluminum busbar 8 by means of a snap fastener. The cable protection shell 9 is also provided with a protective push plate 11. The protective push plate 11 is connected to the notch on the upper side of the cable protection shell 9 by means of a snap fastener. The protective push plate 11 covers the nut side of the cable screw 10.

[0036] During installation, the aluminum busbar 8 is pre-attached with a cable protection shell 9 at its end, and then connected to the cable via clips located on both sides of the protection shell. Figure 4 The grooves on the left and right sides of the aluminum busbar 8 form a snap-fit ​​connection. After the snap-fit ​​is fixed, the top surface of the aluminum busbar 8 abuts against the inner top of the cable protection shell 9 to form a limit, thereby cooperating with the snap-fit ​​to form a fixed connection. The through hole on the aluminum busbar 8 after the fixed connection coincides with the preset through hole on the cable protection shell 9, which facilitates the tightening of the cable screw 10. After the cable screw 10 is tightened, it is connected by means of... Figure 4 An arched channel on the back side of the cable protection shell 9 is inserted into a sheet-like protective push plate 11. The protective push plate 11 slides into the arched channel. The protective push plate 11 has protruding buckles on both sides. The arched channel has notches on the protruding side of the cable protection shell 9 that match the buckle positions. The buckles and notches form a snap-fit ​​fit, and after the protective push plate 11 is snapped and fixed, the protective push plate 11 covers the cable screw 10, thus providing electrical protection.

[0037] Furthermore, such as Figure 1 and Figure 2 , Figure 3 As shown, the AC contact post 3 passes through the AC circuit board 12 with a through hole, and the protruding limiting edge of the AC contact post 3 abuts against the AC circuit board 12 to form an electrical connection. The DC contact post 4 passes through the DC circuit board 13 with a through hole, and the DC contact post 4 is provided with a protruding annular structure, which abuts against the DC circuit board 13 to form an electrical connection. The AC circuit board 12 and the DC circuit board 13 are respectively provided with surface mount resistors as temperature sensors.

[0038] Existing charging sockets use separate wires for temperature sensors, with the sensor fixed to the contact piece using heat shrink tubing. This inconsistency between individual sensors leads to inaccurate temperature readings and cumbersome assembly. Socket manufacturers need to improve assembly efficiency and reduce production costs; OEMs also have higher requirements for temperature measurement accuracy.

[0039] The AC circuit board 12 has four surface mount resistors for detecting the temperature of the AC contacts (corresponding to the front terminal holes L1, L2, L3, and N of the insulating shell 1). The DC circuit board 13 uses a PCB board for signal integration and has two temperature sensors (corresponding to the front terminal holes DC+ and DC- of the insulating shell 1). The temperature sensors are thermistor surface mount resistors soldered onto the circuit board. The temperature of the AC and DC contacts is diffused to the surface mount resistors on the circuit board. The surface mount resistors are very close to the contacts, and the temperature causes a change in the internal resistance of the surface mount resistors, ensuring the accuracy of temperature measurement.

[0040] Furthermore, such as Figure 2 As shown, the AC circuit board 12 and DC circuit board 13 are separately arranged and fixedly installed by means of support columns provided on the insulating shell 1. The AC circuit board 12 and DC circuit board 13 are electrically connected by means of fisheye terminals 14.

[0041] Due to the European standard's requirements for the size of the front-end mounting port, there are mounting steps inside the AC and DC sections, preventing the AC and DC from sharing the same circuit board. This invention uses a fisheye terminal 14 to connect the AC circuit board 12 and the DC circuit board 13 together. The fisheye terminal 14 has pins at both ends and is made using an integrated stamping process. Both ends have connecting parts, resembling a fisheye, and have a certain degree of elasticity. It can form a stable plug-in fit with the pre-drilled holes on the circuit board, ensuring stable and reliable signal transmission.

[0042] Furthermore, the AC circuit board 12 is also provided with a set of connecting pins 15, and the pressure plate tail cover 2 is provided with a low-voltage plug sheath 16. After the pressure plate tail cover 2 is fastened with the insulating shell 1, the connecting pins 15 are inserted into the low-voltage plug sheath 16 to form a low-voltage plug connection plug.

[0043] The circuit structures of AC circuit board 12 and DC circuit board 13 are designed according to European standards; this application only modifies their structural positions. The hole in the middle of the low-voltage plug-in housing 16 ensures the alignment of the connecting pins 15. The low-voltage plug-in connector mates with the terminals extended from the body to achieve low-voltage signal transmission. This design is compact, has fewer parts, improves assembly efficiency, and saves costs.

[0044] Furthermore, such as Figure 3As shown, the AC circuit board 12 is provided with a torsion spring socket 17, and the low-voltage plug-in sheath 16 is provided with a CP contact post 18 and a PP contact post 19. The CP contact post 18, the PP contact post 19 and the torsion spring socket 17 are connected to the insulating shell 1 by means of the fastening of the pressure plate tail cover 2.

[0045] The torsion spring socket 17, also known as the wire spring socket, forms a tight fit with the post body after the CP contact post 18 and PP contact post 19 are inserted, preventing loosening and enabling signal conduction.

[0046] Furthermore, a PE contact post 20 is provided, which has a shoulder that abuts against the AC circuit board 12. The tail end of the PE contact post 20 has a bolt hole, and a PE copper busbar 21 is connected to the tail end of the PE contact post 20 by bolts. The other end of the PE copper busbar 21 has a through hole, which overlaps with a fixing hole 22 of the insulating shell 1. The PE copper busbar 21 allows the charging socket of this application to directly form an electrical connection with the vehicle body after the mounting bolts are tightened, avoiding the impact of separate connections on installation efficiency.

Claims

1. A European standard integrated charging socket, comprising an insulating shell (1), a pressure plate end cover (2), and AC contact posts (3) and DC contact posts (4) fastened within the inner cavities of the two, wherein the insulating shell (1) is provided with through holes for the AC contact posts (3) and DC contact posts (4) to pass through, and the pressure plate end cover (2) is provided with a connecting assembly for connecting the AC contact posts (3) and DC contact posts (4), characterized in that: The AC contact post (3) has a raised limiting edge on its side wall. The first connecting component that cooperates with the AC contact post (3) includes a petal-shaped barbed snap-fit ​​part (5) on the inner surface of the pressure plate tail cover (2) and a sleeve on the outer surface of the pressure plate tail cover (2). The raised limiting edge of the AC contact post (3) and the barbed snap-fit ​​part (5) form an abutment limiting. The AC connecting wire (6) passes through the sleeve and is electrically connected to the AC contact post (3). A sealing plug (7) that wraps around the wire in a ring shape is provided inside the sleeve.

2. The European standard integrated charging socket according to claim 1, characterized in that: The DC contact post (4) is equipped with a second connecting component, which includes an aluminum busbar (8), a cable protection shell (9), and a cable screw (10). The DC contact post (4) has an internal threaded hole at its tail end, and the aluminum busbar (8) has a through hole. The aluminum busbar (8) is fixedly connected to the DC contact post (4) by means of the cable screw (10), and the cable protection shell (9) covers the end of the aluminum busbar (8).

3. The European standard integrated charging socket according to claim 2, characterized in that: The cable protection shell (9) is connected to the groove on the aluminum busbar (8) by means of a snap fastener. The cable protection shell (9) is also provided with a protective push plate (11). The protective push plate (11) is connected to the notch on the upper side of the cable protection shell (9) by means of a snap fastener. The protective push plate (11) covers the nut side of the cable screw (10).

4. The European standard integrated charging socket according to claim 1, characterized in that: The AC contact post (3) passes through the AC circuit board (12) with a through hole. The protruding limiting edge of the AC contact post (3) abuts against the AC circuit board (12) to form an electrical connection. The DC contact post (4) passes through the DC circuit board (13) with a through hole. The DC contact post (4) is provided with a protruding ring structure, and abuts against the DC circuit board (13) to form an electrical connection. The AC circuit board (12) and the DC circuit board (13) are respectively provided with thermistor chip resistors as temperature sensors.

5. A European standard integrated charging socket according to claim 4, characterized in that: The AC circuit board (12) and DC circuit board (13) are separately arranged and fixedly installed by means of support columns set on the insulating shell (1). The AC circuit board (12) and DC circuit board (13) are electrically connected by means of fisheye terminals (14).

6. The European standard integrated charging socket according to claim 4, characterized in that: The AC circuit board (12) is also provided with a set of connecting pins (15), and the pressure plate tail cover (2) is provided with a low-voltage plug-in sheath (16). After the pressure plate tail cover (2) and the insulating shell (1) are fastened together, the connecting pins (15) are inserted into the low-voltage plug-in sheath (16) to form a low-voltage plug-in connector.

7. A European standard integrated charging socket according to claim 6, characterized in that: The AC circuit board (12) is provided with a torsion spring socket (17), and the low-voltage plug-in sheath (16) is provided with a CP contact post (18) and a PP contact post (19). The CP contact post (18), the PP contact post (19) and the torsion spring socket (17) are connected by the fastening of the pressure plate tail cover (2) and the insulating shell (1).

8. A European standard integrated charging socket according to claim 4, characterized in that: A PE contact post (20) is also provided. The PE contact post (20) is provided with a shoulder that abuts against the AC circuit board (12). The tail end of the PE contact post (20) is provided with a bolt hole. The tail end of the PE contact post (20) is connected to a PE copper busbar (21) by means of a bolt. The other end of the PE copper busbar (21) is provided with a through hole, and the through hole overlaps with a fixing hole (22) of the insulating shell (1).

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