Integrated replaceable national standard DC charging socket

Abstract

The utility model provides a kind of integrated replaceable national standard direct current charging socket, including front mounting plate component and rear mounting plate component, front mounting plate component and rear mounting plate component are detachably connected, first connecting cylinder is provided in front mounting plate component, first connecting cylinder is connected with rear mounting plate component, replaceable terminal assembly is installed in first connecting cylinder, replaceable terminal assembly includes terminal block and terminal head, terminal block and terminal head are detachably connected by fastener, terminal head end portion is equipped with end cover.Simultaneously provided with end face plate and drum spring, increase the end face contact area (more than 150mm2) in space when using, greatly improve current-carrying capacity.Terminal block bottom can be ultrasonically welded, various performance is more stable, can adapt larger square number cable.The integrated replaceable national standard direct current charging socket has the advantages of convenient assembly method, simplifies assembly process, shortens assembly time and reduces assembly cost, and is suitable for popularization and application.

Description

Technical Field

[0001] This utility model belongs to the field of DC charging sockets for electric vehicles, and specifically relates to an integrated replaceable national standard DC charging socket. Background Technology

[0002] Currently, the charging process for new energy vehicles involves connecting the electric vehicle's charging port to a charging station to complete the charging. The charging socket, as the interface for daily charging / discharging of electric vehicles, undergoes frequent plugging and unplugging operations. Due to environmental factors, moisture, dust, and other impurities can easily be introduced into the socket terminals during these processes. Over time, this accumulation can lead to increased internal temperature, excessive plugging and unplugging force, deformation of the terminal contact springs, and even short circuits, affecting normal charging and potentially posing a fire hazard in severe cases. Therefore, after a certain period of use, the charging socket needs to be replaced and maintained, typically requiring the replacement of the entire wiring harness and the installation of a new charging socket.

[0003] However, in actual use, the main cause of charging socket failure is wear and tear on the terminal sockets, while other components can still be used normally. Under these conditions, replacing the entire charging socket would be a huge waste, and the replacement speed would be very slow, resulting in low maintenance efficiency and high maintenance costs. The replacement process requires disconnecting and replacing the wiring harness and cable, which is labor-intensive and poses safety hazards.

[0004] Most charging sockets on the market are one-piece charging sockets. If the socket is damaged, the whole thing can only be replaced, which results in high maintenance costs and inconvenience.

[0005] The following are some types of replaceable sockets available on the market:

[0006] 1. Replace the power terminal by disassembling it from the rear of the socket. This solution requires removing the charging socket from the vehicle body for replacement, which is inconvenient and increases the cost of future maintenance.

[0007] 2. The housing is detachable, requiring the plastic outer shell to be disassembled for maintenance before replacing the power terminals. This cumbersome structure and limited space result in a weak housing structure, posing a risk with long-term use.

[0008] 3. Only replace the power terminal structure. Most of the ones on the market are bidirectional spring structures. This structure will still be corroded by moisture and dust after long-term use, which will cause heat to be generated after long-term operation and cause the product temperature to rise too high.

[0009] 4. Replacing only the power terminal structure results in limited space and fewer terminal contact surfaces, leading to weak current carrying capacity and low utilization of the charging socket.

[0010] Therefore, given the shortcomings of the above solutions in actual manufacturing and implementation, an integrated replaceable national standard DC charging socket is provided to solve the above technical problems. Utility Model Content

[0011] This utility model proposes an integrated replaceable national standard DC charging socket, which solves the problems in the prior art.

[0012] The technical solution of this utility model is implemented as follows: An integrated replaceable national standard DC charging socket includes a front mounting plate assembly and a rear mounting plate assembly, which are detachably connected. A first connecting cylinder is provided inside the front mounting plate assembly and is connected to the rear mounting plate assembly. A replaceable terminal assembly is installed inside the first connecting cylinder. The replaceable terminal assembly includes a terminal base and a terminal head, which are detachably connected by fasteners. An end cap is installed at the end of the terminal head.

[0013] Specifically, the fastener is an M4 internal hexagonal pan head screw.

[0014] This integrated replaceable national standard DC charging socket consists of three parts: front and rear mounting plate assemblies (front mounting plate assembly and rear mounting plate assembly), replaceable terminal assembly (terminal base and terminal head), and fasteners (M4 hexagonal pan head screws). This structure facilitates replacement.

[0015] In a preferred embodiment, the terminal block is provided with a cavity, and the bottom of the terminal head is provided with a connecting end. The connecting end is configured to cooperate with the cavity, and after the connecting end is inserted into the cavity, the terminal block and the terminal head are connected and fixed by fasteners.

[0016] A drum spring is installed inside the cavity of the terminal block, and an end panel is provided at the bottom of the terminal block to increase the contact area with the cable end.

[0017] In a preferred embodiment, the rear mounting plate assembly is provided with a second connecting cylinder, which corresponds to the position of the first connecting cylinder. After the front mounting plate assembly and the rear mounting plate assembly are installed, the second connecting cylinder is connected to the first connecting cylinder.

[0018] In a preferred embodiment, the terminal block sidewall is provided with a first groove and a second groove, and the top sidewall of the second connecting cylinder is provided with a limiting ring. After the terminal block and the terminal head are installed, the limiting ring and the second groove are positioned correspondingly. A C-shaped retaining ring is installed in the second groove, and a first sealing ring is installed in the first groove. After the C-shaped retaining ring and the first sealing ring are installed, the C-shaped retaining ring is located between the limiting ring and the bottom sidewall of the terminal head, and the first sealing ring is located between the outer sidewall of the terminal head and the first retaining groove.

[0019] In a preferred embodiment, a limiting groove is provided at the top of the first connecting cylinder, and multiple limiting grooves are evenly distributed around the top of the terminal block. A limiting protrusion is provided at the bottom of the end cover, and the limiting protrusion corresponds to the limiting groove. A limiting head is provided on the inner wall of the limiting protrusion, and a limiting groove is provided on the side wall of the terminal head. The limiting head and the limiting groove are fitted together, and the end cover is locked and fixed to the first connecting cylinder and the terminal head by the limiting head entering the limiting groove.

[0020] In a preferred embodiment, the top of the end cap is provided with an insertion hole, which corresponds to the position of the limiting protrusion.

[0021] In a preferred embodiment, the end cap includes a cap cavity, the inner wall of which is provided with an anti-rotation surface, the top of the terminal head matches the shape of the cap cavity, and the terminal head is axially fixed to the end cap after the top of the terminal head is inserted into the inner cavity of the end cap.

[0022] In a preferred embodiment, the front mounting plate assembly has a first locking head on its bottom outer sidewall and the rear mounting plate assembly has a first locking hole on its sidewall. The first locking head and the first locking hole are fitted together, and the front mounting plate assembly and the rear mounting plate assembly are locked and fixed by inserting the first locking head into the first locking hole.

[0023] Specifically, a connecting cover is provided on the top of the rear mounting plate assembly, and multiple first locking holes are evenly arranged along the circumference of the connecting cover.

[0024] In a preferred embodiment, a tail cap is installed at the bottom of the second connecting cylinder, a second locking head is provided on the outer side wall of the bottom of the second connecting cylinder, and a second locking hole is provided on the side wall of the tail cap. The second locking hole and the second locking head are configured to cooperate with each other, and the second connecting cylinder and the tail cap are connected and fixed by inserting the second locking head into the second locking hole.

[0025] In a preferred embodiment, a sealing body is installed on the inner wall of the bottom of the second connecting cylinder.

[0026] In a preferred embodiment, the front mounting plate assembly also includes a charging socket signal terminal, a resistor module, a temperature sensing module, and a PCB circuit board, all of which are connected and locked to the terminal fixing plate with screws. The signal terminal is led out from a 10-pin connector.

[0027] After adopting the above technical solution, the beneficial effects of this utility model are:

[0028] 1. The assembly method is convenient, simplifies the assembly process, shortens the assembly time, and reduces the assembly cost.

[0029] This integrated replaceable charging socket is installed in three parts: replaceable terminal block assembly + screws, front mounting plate assembly, and rear mounting plate assembly.

[0030] 2. The integrated replaceable charging socket only requires replacement of the terminal head and screws when damaged, making it easy to operate, requiring fewer replacement parts, and facilitating future disassembly and maintenance. The screws are designed with internal hexagonal Torx sockets to prevent non-professionals from disassembling them and causing safety accidents.

[0031] 3. The replaceable terminal part is designed with a sealing ring, which forms a sealed area for the non-replaceable part, providing dust and water protection for the non-replaceable part, thereby extending the service life of the socket;

[0032] 4. The replaceable terminal contacts adopt a combination of end-face contact and spring contact, which increases the end-face contact area (greater than 150mm2) and provides 360° radial contact with the drum spring, greatly improving current carrying capacity. The bottom of the terminal block can be ultrasonically welded, resulting in more stable performance and compatibility with larger cross-sectional area cables, thus improving the utilization rate of the charging socket.

[0033] 5. Both the terminal head and terminal base are designed with anti-rotation function to fix the position of the terminal base and the installation position of the terminal head, making screw connections easy to install and disassemble.

[0034] 6. The signal terminals adopt integrated wiring, and the low-voltage terminals inside the socket are integrated with PCB board and led out by 10 pins, eliminating the traditional assembly work such as low-voltage terminal crimping and wire pulling, thus improving assembly efficiency. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of this utility model;

[0037] Figure 2 This is a top view of the structure of this utility model;

[0038] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0039] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0040] Figure 5 This is a partial cross-sectional view of the present invention.

[0041] Figure 6 This is a partial structural cross-sectional view of the present invention;

[0042] Figure 7 This is a schematic diagram of the end cap structure of this utility model;

[0043] Figure 8 This is a schematic diagram of the front mounting plate assembly structure of this utility model;

[0044] Figure 9 This is a schematic diagram of the front mounting plate assembly structure of this utility model.

[0045] In the diagram, 1. Sealing cap; 2. Platform; 3. Front mounting plate assembly; 4. Rear mounting plate assembly; 5. Cable; 6. End cap; 7. Terminal head; 8. Second sealing ring; 9. Fastener; 10. First sealing ring; 11. C-shaped retaining ring; 12. End panel; 13. Tail cap; 14. Sealing body; 15. Ring groove; 16. First connecting cylinder; 17. Terminal seat; 18. Second connecting cylinder; 19. Limiting ring; 20. Second groove; 21. Limiting protrusion; 22. Point locking head; 23. Limiting groove; 24. Limiting slot; 25. Anti-rotation surface; 26. First locking head; 27. Connecting cover; 28. Drum spring; 29. ​​First groove; 30. First locking hole; 31. Second locking head; 32. Second locking hole; 33. Insertion hole. Detailed Implementation

[0046] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] Example: Figure 1 Figure 2 As shown, an integrated replaceable national standard DC charging socket includes a front mounting plate assembly 3 and a rear mounting plate assembly 4, which are detachably connected. A first connecting cylinder 16 is provided inside the front mounting plate assembly 3 and is connected to the rear mounting plate assembly 4. A replaceable terminal assembly is installed inside the first connecting cylinder 16. The replaceable terminal assembly includes a terminal base 17 and a terminal head 7, which are detachably connected by a fastener 9. An end cap 6 is installed at the end of the terminal head 7.

[0048] The front mounting plate assembly 3 is fixedly mounted with a platform 2, and the platform 2 is hinged with a sealing plate 1, which is used to close the port of the front mounting assembly 3.

[0049] In this embodiment, fastener 9 is an M4 internal hexagonal pan head screw.

[0050] This integrated replaceable national standard DC charging socket consists of three parts: front and rear mounting plate assemblies 4 (front mounting plate assembly 3 and rear mounting plate assembly 4), replaceable terminal assembly (terminal base 17 and terminal head 7), and fasteners 9 (M4 internal hexagonal Torx pan head screws).

[0051] like Figures 3 to 6 As shown, the terminal block 17 is provided with a cavity, and the bottom of the terminal head 7 is provided with a connecting end. The connecting end is configured to cooperate with the cavity. After the connecting end is inserted into the cavity, the terminal block 17 and the terminal head 7 are connected and fixed by the fastener 9.

[0052] Specifically, the connection end is provided with a mounting cavity, and an M4 internal hexagonal pan head screw passes through the bottom thread of the mounting cavity and connects to the bottom surface of the insertion cavity of the terminal block 17.

[0053] A drum spring 28 is installed inside the insertion cavity of the terminal block 17, and an end panel 12 is provided at the bottom of the terminal block 17, which can increase the contact area with the end of the cable 5 when the cable 5 is installed.

[0054] The rear mounting plate assembly 4 is provided with a second connecting cylinder 18, which corresponds to the position of the first connecting cylinder 16. After the front mounting plate assembly 3 and the rear mounting plate assembly 4 are installed, the second connecting cylinder 18 and the first connecting cylinder 16 are connected.

[0055] The terminal block 17 has a first groove 29 and a second groove 20 on its side wall. The second connecting cylinder 18 has a limit ring 19 on its top side wall. After the terminal block 17 and the terminal head 7 are installed, the limit ring 19 and the second groove 20 are positioned correspondingly. A C-shaped retaining ring 11 is installed in the second groove 20, and a first sealing ring 10 is installed in the first groove 29. After the C-shaped retaining ring 11 and the first sealing ring 10 are installed, the C-shaped retaining ring 11 is located between the limit ring 19 and the bottom side wall of the terminal head 7, and the first sealing ring 10 is located between the outer side wall of the terminal head 7 and the first groove.

[0056] A groove 15 is provided on the side wall of the terminal head 7, and a second sealing ring 8 is installed in the groove 15. The second sealing ring 8 is an O-ring.

[0057] The top of the first connecting cylinder 16 is provided with a limiting groove. Multiple limiting grooves are evenly arranged around the top of the terminal block 17. The bottom of the end cover 6 is provided with a limiting protrusion 21. The limiting protrusion 21 corresponds to the position of the limiting groove. The inner wall of the limiting protrusion 21 is provided with a limiting head. The side wall of the terminal head 7 is provided with a limiting groove. The limiting head and the limiting groove are fitted together. The end cover 6 enters the limiting groove through the limiting head to lock and fix the end cover 6 to the first connecting cylinder 16 and the terminal head 7.

[0058] The top of the end cap 6 is provided with a socket 33, which corresponds to the position of the limiting protrusion 21.

[0059] like Figure 7As shown, the end cap 6 includes a cover cavity, and the inner wall of the cover cavity is provided with an anti-rotation surface 25. The top of the terminal head 7 matches the shape of the cover cavity. After the top of the terminal head 7 is inserted into the inner cavity of the end cap 6, the terminal head 7 and the end cap 6 are axially fixed.

[0060] like Figure 8 , Figure 9 As shown, the front mounting plate assembly 3 has a first locking head 26 on its bottom outer sidewall, and the rear mounting plate assembly 4 has a first locking hole 30 on its sidewall. The first locking head 26 and the first locking hole 30 are fitted together, and the front mounting plate assembly 3 and the rear mounting plate assembly 4 are locked and fixed by inserting the first locking head 26 into the first locking hole 30.

[0061] Specifically, the top of the rear mounting plate assembly 4 is provided with a connecting cover 27, and multiple first locking holes 30 are evenly arranged around the connecting cover 27.

[0062] The bottom of the second connecting cylinder 18 is equipped with a tail cap 13. The outer side wall of the bottom of the second connecting cylinder 18 is provided with a second locking head 31. The side wall of the tail cap 13 is provided with a second locking hole 32. The second locking hole 32 is configured to cooperate with the second locking head 31. The second connecting cylinder 18 and the tail cap 13 are connected and fixed by inserting the second locking head 31 into the second locking hole 32.

[0063] A sealing body 14 is installed on the inner wall of the bottom of the second connecting cylinder 18. In this embodiment, the sealing body 14 is a silicone sealing body 14.

[0064] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An integrated replaceable national standard DC charging socket, characterized in that, Includes a front mounting plate assembly (3) and a rear mounting plate assembly (4), the front mounting plate assembly (3) and the rear mounting plate assembly (4) are detachably connected, the front mounting plate assembly (3) is provided with a first connecting cylinder (16), the first connecting cylinder (16) is connected to the rear mounting plate assembly (4), the first connecting cylinder (16) is provided with a terminal block (17) and a terminal head (7), the terminal block (17) and the terminal head (7) are detachably connected by a fastener (9), and an end cap (6) is installed at the end of the terminal head (7).

2. The integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The terminal block (17) is provided with a cavity, and the bottom of the terminal head (7) is provided with a connecting end. The connecting end is configured to cooperate with the cavity. After the connecting end is inserted into the cavity, the terminal block (17) and the terminal head (7) are connected and fixed by fasteners (9).

3. The integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The rear mounting plate assembly (4) is provided with a second connecting cylinder (18), which is positioned corresponding to the first connecting cylinder (16). After the front mounting plate assembly (3) and the rear mounting plate assembly (4) are installed, the second connecting cylinder (18) and the first connecting cylinder (16) are connected.

4. The integrated replaceable national standard DC charging socket according to claim 3, characterized in that, The terminal block (17) has a first groove (29) and a second groove (20) on its side wall. The second connecting cylinder (18) has a limit ring (19) on its top side wall. After the terminal block (17) and the terminal head (7) are installed, the limit ring (19) and the second groove (20) are positioned correspondingly. A C-shaped retaining ring (11) is installed in the second groove (20). A first sealing ring (10) is installed in the first groove (29). After the C-shaped retaining ring (11) and the first sealing ring (10) are installed, the C-shaped retaining ring (11) is located between the limit ring (19) and the bottom side wall of the terminal head (7). The first sealing ring (10) is located between the outer side wall of the terminal head (7) and the first groove.

5. An integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The first connecting cylinder (16) is provided with a limiting groove (23) at the top. Multiple limiting grooves are evenly arranged around the top of the terminal block (17). The end cover (6) is provided with a limiting protrusion (21) at the bottom. The limiting protrusion (21) corresponds to the limiting groove. The inner wall of the limiting protrusion (21) is provided with a limiting head. The side wall of the terminal head (7) is provided with a limiting groove. The limiting head and the limiting groove are configured to cooperate. The end cover (6) enters the limiting groove through the limiting head to lock and fix the end cover (6) with the first connecting cylinder (16) and the terminal head (7).

6. The integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The end cap (6) is provided with a socket (33) on the top, and the socket (33) corresponds to the position of the limiting protrusion (21).

7. An integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The end cap (6) includes a cover cavity, and the inner wall of the cover cavity is provided with an anti-rotation surface (25). The top of the terminal head (7) matches the shape of the cover cavity. After the top of the terminal head (7) is inserted into the inner cavity of the end cap (6), the terminal head (7) is axially fixed to the end cap (6).

8. An integrated replaceable national standard DC charging socket according to claim 1, characterized in that, The front mounting plate assembly (3) has a first clip head (26) on its bottom outer sidewall, and the rear mounting plate assembly (4) has a first clip hole (30) on its sidewall. The first clip head (26) and the first clip hole (30) are fitted together, and the front mounting plate assembly (3) and the rear mounting plate assembly (4) are locked and fixed by inserting the first clip head (26) into the first clip hole (30).

9. An integrated replaceable national standard DC charging socket according to claim 3, characterized in that, The bottom of the second connecting cylinder (18) is equipped with a tail cap, and the outer side wall of the bottom of the second connecting cylinder (18) is provided with a second clip (31). The side wall of the tail cap is provided with a second clip hole (32). The second clip hole (32) and the second clip (31) are configured to cooperate with each other. The second connecting cylinder (18) and the tail cap are connected and fixed by inserting the second clip (31) into the second clip hole (32).

10. An integrated replaceable national standard DC charging socket according to claim 9, characterized in that, A sealing body (14) is installed on the inner wall of the bottom of the second connecting cylinder (18).

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