Direct current charging socket convenient and fast to plug

Abstract

The utility model discloses a direct current charging socket convenient and fast to plug. The direct-current charging socket comprises a plug head part and a plug seat part, wherein a high-voltage interlocking pin is arranged in the middle of a reversing shell of the plug head part, and a protective cover is hinged to a rear port of the high-voltage interlocking pin; a PCBA board is welded to the inner end of a high-voltage interlocking elastic piece of the bayonet socket part. The inner end of a multi-hole signal plug is welded to the upper end of the PCBA board, and the outer end of the multi-hole signal plug extends out of the front wall of the front mounting plate. The plugging head part and the plugging seat part are assembled respectively and then plugged oppositely, an inner plugging ring of the rear mounting plate is connected with a reversing shell in a sleeving manner, a high-voltage interlocking pin is inserted into a high-voltage interlocking elastic sheet to form a high-voltage interlocking loop, a protective cover is opened by rotating, a power jack part is attached to a connecting lug and is fixedly connected through a rear-mounted screw, and the protective cover is closed by rotating. And the connecting screw holes of the protective cover and the rear mounting plate are fixed through common screws. According to the utility model, the product structure is optimized, the assembly process is simplified, the assembly time is reduced, and the intelligent large-scale production is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of charging sockets, and in particular to a convenient and quick-plug DC charging socket. Background Technology

[0002] The development of new energy electric vehicles is currently rapid. Electric vehicles often use high-power AC charging sockets. In the past, charging sockets on the market were assembled as a whole, consisting of a front mounting plate, a rear mounting plate, an adapter tail cover, and adapter terminals. Various terminals, sockets, sealing rings, and PCB boards were installed in these three components, and the wires and power wires were designed to exit later. The drawbacks of this design are: firstly, the connection and wiring structures are complex, the assembly process is complicated, it consumes a lot of time, and the assembly efficiency is low; secondly, subsequent use, maintenance, and repair require complete disassembly and assembly, which is inconvenient and involves a large workload. Utility Model Content

[0003] To address one or more of the aforementioned problems, this utility model provides a convenient and quick-connect DC charging socket.

[0004] According to one aspect of the present invention, a convenient quick-plug DC charging socket includes:

[0005] The connector section has a front and rear open insertion cavity at the upper end of the commutation housing. The insertion cavity has symmetrical power cable connection ears at both ends and a high voltage interlocking pin in the middle. The rear port of the commutation housing is hinged with a protective cover.

[0006] The plug-in socket includes several power plug-in components, a front mounting plate, a rear mounting plate, and a PCBA board located in the cavity surrounded by the two mounting plates. The inner end of the high-voltage interlock spring is welded to the PCBA board and the axial open end extends outward to the rear wall of the rear mounting plate. The inner end of the multi-hole signal plug is welded to the upper end of the PCBA board and the outer end extends outward to the front wall of the front mounting plate.

[0007] After the connector and socket are assembled and plugged in, the inner ring of the rear mounting plate is connected to the reversing housing. The high-voltage interlock pin is inserted into the high-voltage interlock spring to form a high-voltage interlock circuit. Rotate to open the protective cover, the power socket fits into the connecting ear and is fixed by the rear mounting screw. Rotate to close the protective cover, and the connecting screw holes of the protective cover and the rear mounting plate are fixed by a common screw.

[0008] In some implementations, one end of a patch copper busbar is laser-welded to the rear end of several signal terminals of the connector, and the other end of the patch copper busbar is welded to a PCBA board.

[0009] In some embodiments, the first threaded member passes through the fixing screw hole of the rear lug of the rear mounting plate and the front lug of the front mounting plate connecting the panel.

[0010] In some embodiments, the grounding socket of the plug-in part is riveted to the rear mounting plate, and the copper busbar is integrally injection molded to connect to the rear mounting plate. One end of the copper busbar is bushed with the grounding socket and the other end is connected to the grounding copper busbar through a first threaded part. The other end of the grounding copper busbar is connected to the body sheet metal through a second threaded part.

[0011] In some embodiments, the heat-conducting sheet of the connector is integrally injection molded to the rear mounting plate, and an ultra-thin wall layer or a bonding connection is provided between the upper end of the heat-conducting sheet and the temperature detection groove of the rear mounting plate. The lower end of the heat-conducting sheet protrudes from the power through hole of the rear mounting plate to connect to the power socket component.

[0012] The back end of the surface mount temperature sensor is soldered onto a PCBA board, and the front end enters the temperature detection slot. The gap between the surface mount temperature sensor and the temperature detection slot is bonded together with thermally conductive silicone.

[0013] In some implementations, the high-voltage interlocking pin is integrally injection molded into the interlocking groove at the center of the protective cover; two high-voltage interlocking springs are integrally injection molded symmetrically connected to both sides of the interlocking seat.

[0014] In some embodiments, a common screw passes through the first through hole of the protective cover and the second through hole of the connecting lug at the upper end of the straight connecting tube and is screwed into the connecting screw hole of the fixing lug of the inner insert ring.

[0015] Alternatively, the first through hole is the inner hole of the first bushing integrally injection molded and connected to the protective cover, the second through hole is the inner hole of the second bushing integrally injection molded and connected to the connecting lug, and the connecting screw hole is the inner hole of the internal threaded sleeve integrally injection molded and connected to the fixing lug.

[0016] In some embodiments, a rear sealing ring groove is provided at the rear end of the inner wall of the direct connection pipe. When the protective cover is rotated and closed, the first sealing ring inside the protective cover fits against the rear end face of the direct connection pipe.

[0017] In some embodiments, an inner rotating block is provided in the middle of one end face of the protective cover, and the inner rotating block and the hinge seat on one side of the straight connecting pipe are rotatably connected by a hinge shaft.

[0018] In some implementations, the power cable is any one of aluminum wire, copper wire, and aluminum busbar, and the connector lug is a copper wire lug.

[0019] This convenient and quick-connect DC charging socket divides the socket into a connector section and a socket section. A multi-port signal plug integrates low-voltage signal output. The cable only needs to be assembled at the connector section. Both sections are assembled separately, then plugged in, and finally tightened with screws to complete the assembly. Its advantages are: First, this design optimizes the product structure, simplifies the assembly process, and reduces assembly time. The connector and socket sections can be assembled on different assembly lines, facilitating intelligent mass production and improving assembly efficiency. Second, during maintenance, only the connector or socket section needs to be separated for targeted repairs of the respective modules, eliminating the need for overall disassembly and reducing workload. Third, the high-voltage interlock pins and springs ensure that the high-voltage interlock pins are the first to open and the last to close, effectively improving the socket's safety. Fourth, the hinged protective cover facilitates disassembly and maintenance. Fifth, this design eliminates the signal harness, simplifying assembly and connection, and effectively reducing the device's size. Attached Figure Description

[0020] Figure 1 A three-dimensional schematic diagram of a convenient and quick-connect DC charging socket according to one embodiment of the present invention;

[0021] Figure 2 for Figure 1 A three-dimensional schematic diagram of the connector shown;

[0022] Figure 3 for Figure 2 A three-dimensional schematic diagram of the protective cover shown;

[0023] Figure 4 for Figure 1 A three-dimensional schematic diagram of the connector shown;

[0024] Figure 5 for Figure 4 A three-dimensional schematic diagram of the mounting plate after the connector portion has been removed;

[0025] Figure 6 for Figure 5 The diagram shows the installation of the heat-conducting plate.

[0026] Figure 7 for Figure 1 The diagram shown is a right-side view of a convenient and quick-connect DC charging socket.

[0027] Figure 8 for Figure 7 The diagram shows a cross-sectional view (AA) of a convenient and quick-connect DC charging socket.

[0028] Figure 9 for Figure 7 The diagram shows a BB cross-sectional view of a convenient and quick-connect DC charging socket.

[0029] Plug part 01, insertion cavity 010, high voltage interlocking pin 011, reversing shell 1, direct connection tube 10, steering tube 11, hinge shaft 12, hinge seat 13, front slot 14, connecting ear seat 15, front end cover 2, protective cover 3, inner rotating block 31, interlocking groove 32, first sealing ring 33, tail cover 5.

[0030] Socket 02, high voltage interlock spring 021, power socket 022, heat-conducting plate 023, multi-hole signal plug 024, grounding socket 025, interlock socket 026, adapter copper busbar 027, PCBA board 4, surface mount temperature sensor 41, front mounting plate 6, rear mounting plate 7, inner ring 70, temperature detection slot 71, ultra-thin wall layer 72, thermally conductive silicone 73, fixing ear 74;

[0031] Post-installation screw 03; Common screw 04;

[0032] Power cable 05, connector ear 051;

[0033] Signal terminal 06, surface mount copper busbar 061;

[0034] First threaded part 07. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0036] Figures 1 to 9 A convenient quick-connect DC charging socket according to one embodiment of the present invention is schematically shown. As shown, the convenient quick-connect DC charging socket includes:

[0037] The connector part 01 has a front and rear open insertion cavity 010 at the upper end of the commutation housing 1. The insertion cavity 010 has symmetrical connecting ears 051 for power cables 05 at both ends and a high voltage interlocking pin 011 in the middle. The rear port of the commutation housing 1 is hinged with a protective cover 3.

[0038] The plug-in socket 02 includes several power plug-in components 022, a front mounting plate 6, a rear mounting plate 7, and a PCBA board 4 disposed in the cavity surrounded by the two mounting plates. The high-voltage interlock spring 021 has its inner end welded to the PCBA board 4 and its axial open end extending outward from the rear wall of the rear mounting plate 7. The multi-hole signal plug 024 has its inner end welded to the upper end of the PCBA board 4 and its outer end extending outward from the front wall of the front mounting plate 6.

[0039] After the connector part 01 and the connector base part 02 are assembled and plugged in, the inner ring 70 of the rear mounting plate 7 is connected to the reversing shell 1. The high voltage interlock pin 011 is inserted into the high voltage interlock spring 021 to form a high voltage interlock circuit. Rotate to open the protective cover 3. The power socket part 022 fits into the connecting ear 051 and is fixedly connected by the rear mounting screw 03. Rotate to close the protective cover 3. The connecting screw hole of the protective cover 3 and the rear mounting plate 7 is fixed by the common screw 04.

[0040] This convenient and quick-connect DC charging socket consists of a connector section 01 and a socket section 02. A multi-port signal plug 024 integrates low-voltage signal output. The cable only needs to be assembled at the connector section 01. Both sections are assembled separately, then plugged in, and finally tightened with screws 03 to complete the assembly. Its advantages are: firstly, this design optimizes the product structure, simplifies the assembly process, and reduces assembly time. The connector section 01 and socket section 02 can be assembled on different assembly lines, facilitating intelligent mass production. First, it improves assembly efficiency; second, during maintenance, only the connector part 01 or the connector part 02 needs to be separated for targeted repair of the corresponding module, without the need for overall disassembly and assembly, making disassembly and assembly simple and reducing workload; third, the high-voltage interlocking pin 011 and high-voltage interlocking spring 021 are set to ensure that the high-voltage interlocking pin 012 is the first to disconnect and the last to close, effectively improving the safety protection of the socket; fourth, the hinged protective cover 3 is set for easy disassembly and maintenance; fifth, this setting eliminates the signal harness, making assembly and connection easier and effectively reducing the size of the equipment.

[0041] Furthermore, several signal terminals 06 are fixedly connected to the front mounting plate 6 via signal tubes, and the middle section is fitted onto the PCBA board 4 with equal diameter. One end of a surface-mount copper busbar 061 is laser-welded to the rear end of the signal terminals 06, and the other end of the surface-mount copper busbar 061 is welded to the PCBA board 4, achieving wireless low-voltage signal output. The beneficial effects are: the welding structure is robust, and the signal output is stable and reliable.

[0042] Furthermore, the first threaded component 07 passes through the fixing screw holes of the rear ear plate of the rear mounting plate 7 and the front ear plate of the front mounting plate 6, and the second threaded component is threaded to the body sheet metal through the connecting through hole of the panel. Its advantages are: this connection structure is highly integrated and compact overall.

[0043] Furthermore, the grounding socket 025 of the plug-in portion 02 passes through the grounding through hole of the front mounting plate 6 and is riveted to the rear mounting plate 7 at the rear end. The adapter copper busbar 027 is integrally injection molded and connected to the rear mounting plate 7. One end of the adapter copper busbar is located in the grounding through hole and is bushed to the grounding socket 025, while the other end is connected to the grounding copper busbar through the first threaded part 07. The other end of the grounding copper busbar is connected to the vehicle body sheet metal through the second threaded part, thus realizing the grounding function. Its beneficial effects are: this structure can achieve a good grounding structure, and at the same time, the sealing protection level of the grounding structure is high.

[0044] Furthermore, the heat-conducting plate 023 of the plug-in portion 02 is integrally injection molded and connected to the rear mounting plate 7, and an ultra-thin wall layer 72 is provided between the upper end of the heat-conducting plate 023 and the temperature detection groove 71 of the rear mounting plate 7 or they are bonded together. The lower end of the heat-conducting plate 023 protrudes out of the power through hole of the rear mounting plate 7 and is sleeved with the power plug-in component 022.

[0045] The rear end of the surface-mount temperature sensor 41 is soldered to the PCBA board 4, and the front end enters the temperature detection slot 71. The gap between the surface-mount temperature sensor 41 and the temperature detection slot 71 is bonded together by thermally conductive silicone 73. The beneficial effect of this setup is that it enables reliable temperature detection and ensures stable operation.

[0046] Furthermore, the high-voltage interlock pin 011 is integrally injection molded and connected to the interlock groove 32 in the center of the protective cover 3; two high-voltage interlock springs 021 are integrally injection molded and symmetrically connected on both sides of the interlock seat 026, with the PCBA board 4 welded to their rear ends and the front ends symmetrically positioned at both ends of the insertion interface. The interlock seat 026 is inserted into the interlock groove 32, and the high-voltage interlock pin 011 is inserted into and fits against the high-voltage interlock springs 021 on both sides. The beneficial effect is that this setting ensures high installation and positioning accuracy of the high-voltage interlock structure.

[0047] Furthermore, the reversing housing 1 includes a direct connection pipe 10 and at least two steering pipes 11. The direct connection pipe 10 has an open insertion cavity 010 at both ends, and the lower end of the direct connection pipe 10 is vertically connected to several parallel steering pipes 11. The ends of two power cables 05 are located inside the steering pipes 11, and their connecting ears 051 are symmetrically arranged in the insertion cavity 010. The upper end of the direct connection pipe 10 is provided with a connecting ear seat 15, and a common screw 04 passes through the first through hole of the protective cover 3 and the second through hole of the connecting ear seat 15 and is screwed into the connecting screw hole of the fixing ear seat 74 of the inner insert ring 70. Preferably, the first through hole is the inner hole of the first bushing integrally injection molded and connected to the protective cover 3, the second through hole is the inner hole of the second bushing integrally injection molded and connected to the connecting ear seat 15, and the connecting screw hole is the inner hole of the internal threaded sleeve integrally injection molded and connected to the fixing ear seat 74. Its beneficial effects are: the connection structure occupies little space, while the connection is tight and adaptable to stress shrinkage deformation over a long period of time.

[0048] Furthermore, the front end of the inner wall of the direct connector 10 is provided with a front slot 14 with an annular groove structure. The inner ring 70 of the rear mounting plate 7 is inserted into the front slot 14. The front end cover 2 is inserted into the inner groove wall of the front slot 14. A second sealing ring is provided in the sealing groove of the front end cover 2 and the front slot 14. The rear end of the inner wall of the direct connector 10 is provided with a rear sealing ring groove. When the protective cover 3 is rotated and closed, the first sealing ring 33 in the protective cover 3 fits against the rear end face of the direct connector 10. Its beneficial effect is that the connection structure has high sealing performance and protects the internal electronic components from contamination and interference by external objects.

[0049] Furthermore, an inner rotating block 31 is provided in the middle of one end face of the protective cover 3. The inner rotating block 31 and the hinge seat 13 on one side of the straight connecting pipe 10 are rotatably connected by a hinge shaft 12. The beneficial effects are: this setting allows for smooth opening, convenient operation, and effectively improves assembly efficiency.

[0050] The power cable 05 can be any of aluminum wire, copper wire, or aluminum busbar, and the connecting ear 051 is a copper wire ear. A locating post is sleeved inside the ear hole of the connecting ear 051, and the rear mounting screw 03 passes through the threaded hole at the rear end of the power socket 022, connecting the connecting ear 051 and the locating post. The beneficial effects are: the locating post improves installability and assembly accuracy.

[0051] The two parallel cavities of the steering tube 11 are respectively fitted with cable holders and the ends are snapped into the tail cover 5. The two power cables 05 pass through the tail cover 5 and are connected to the cable holders.

[0052] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A convenient and quick-plug DC charging socket, characterized in that, include: The connector part (01) has a front and rear open insertion cavity (010) on the upper end of the reversing shell (1) of the connector part (01). The insertion cavity (010) has symmetrically arranged connecting ears (051) for power cables (05) at both ends and a high-voltage interlocking pin (011) in the middle. The rear port of the reversing shell (1) is hinged with a protective cover (3). The plug-in portion (02) includes several power plug-in components (022), a front mounting plate (6), a rear mounting plate (7), and a PCBA board (4) located in the cavity surrounded by the two mounting plates. The high-voltage interlock spring (021) is welded to the PCBA board (4) at its inner end and its axial open end extends outward from the rear wall of the rear mounting plate (7). The multi-hole signal plug (024) is welded to the upper end of the PCBA board (4) at its inner end and its outer end extends outward from the front wall of the front mounting plate (6). The connector part (01) and the connector base part (02) are assembled and then plugged in. The inner ring (70) of the rear mounting plate (7) is connected to the reversing shell (1). The high voltage interlock pin (011) is inserted into the high voltage interlock spring (021) to form a high voltage interlock circuit. The protective cover (3) is opened by rotating. The power socket part (022) fits into the connecting ear (051) and is fixedly connected by the rear mounting screw (03). The protective cover (3) is closed by rotating. The connecting screw holes of the protective cover (3) and the rear mounting plate (7) are fixed by the common screw (04).

2. The convenient and quick-plug DC charging socket according to claim 1, characterized in that, The connector (02) has several signal terminals (06) at the rear end of which are laser-welded to one end of a patch copper busbar (061), and the other end of the patch copper busbar (061) is welded to a PCBA board (4).

3. The convenient and quick-connect DC charging socket according to claim 1, characterized in that, The first threaded part (07) passes through the fixing screw hole of the rear ear plate of the rear mounting plate (7) and the front ear plate of the front mounting plate (6) connecting the panel.

4. A convenient and quick-connect DC charging socket according to claim 3, characterized in that, The grounding socket (025) of the plug-in part (02) is riveted to the rear mounting plate (7), and the adapter copper bus (027) is integrally injection molded to the rear mounting plate (7). One end of the adapter is bushed with the grounding socket (025), and the other end is connected to the grounding copper bus through the first threaded part (07). The other end of the grounding copper bus is connected to the body sheet metal through the second threaded part.

5. A convenient and quick-connect DC charging socket according to claim 1, characterized in that, The heat-conducting sheet (023) of the plug-in part (02) is integrally injection molded to the mounting plate (7), and an ultra-thin wall layer (72) or a close-fitting connection is provided between the upper end of the heat-conducting sheet (023) and the temperature detection groove (71) of the mounting plate (7). The lower end of the heat-conducting sheet (023) protrudes out of the power through hole of the mounting plate (7) and is sleeved with the power plug-in part (022). The back end of the surface mount temperature sensor (41) is soldered to the PCBA board (4) and the front end enters the temperature detection groove (71). The gap between the surface mount temperature sensor (41) and the temperature detection groove (71) is bonded together by thermally conductive silicone (73).

6. A convenient and quick-connect DC charging socket according to claim 1, characterized in that, The high-voltage interlocking pin (011) is integrally injection molded and connected to the interlocking groove (32) in the center of the protective cover (3); the two high-voltage interlocking springs (021) are integrally injection molded and symmetrically connected to both sides of the interlocking seat (026).

7. A convenient and quick-connect DC charging socket according to claim 1, characterized in that, The common screw (04) passes through the first through hole of the protective cover (3) and the second through hole of the connecting lug (15) at the upper end of the straight connecting pipe (10) and is screwed into the connecting screw hole of the fixing lug (74) of the inner insert ring (70); Alternatively, the first through hole is the inner hole of the first bushing integrally injection molded and connected to the protective cover (3), the second through hole is the inner hole of the second bushing integrally injection molded and connected to the connecting ear (15), and the connecting screw hole is the inner hole of the internal thread sleeve integrally injection molded and connected to the fixing ear (74).

8. A convenient and quick-connect DC charging socket according to claim 7, characterized in that, The inner wall of the direct connection pipe (10) is provided with a rear sealing ring groove. When the protective cover (3) is rotated and closed, the first sealing ring (33) inside the protective cover (3) fits against the rear end face of the direct connection pipe (10).

9. A convenient and quick-connect DC charging socket according to claim 7, characterized in that, The protective cover (3) has an inner rotating block (31) in the middle of one end face. The inner rotating block (31) and the hinge seat (13) on one side of the straight connecting pipe (10) are rotatably connected by a hinge shaft (12).

10. A convenient and quick-connect DC charging socket according to claim 7, characterized in that, The power cable (05) is any one of aluminum wire, copper wire and aluminum busbar, and the connecting ear (051) is a copper wire ear.

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