Automobile non-shielding fast charging connector

Abstract

The utility model relates to the technical field of electric connectors, in particular to an automobile non-shielding fast-charging connector, which comprises a socket assembly, a plug assembly and a locking bolt, the socket assembly comprises a socket shell, a high-voltage copper column assembly and a low-voltage assembly are fixedly arranged in the socket shell, the plug assembly comprises a plug shell, and the locking bolt is arranged in the plug shell. The plug shell is provided with a bolt installation cavity and a cable installation cavity which are communicated in a crossed mode, a high-voltage copper bar assembly and a low-voltage male terminal assembly are fixedly installed in the bolt installation cavity, and a turning cover is arranged at the top of the bolt installation cavity. The electric connector is high in safety performance, safe connection between terminals is effectively guaranteed, safe connection between the socket assembly and the plug assembly is guaranteed, and the safety performance of the electric connector is improved. Non-specialized personnel are prevented from easily opening the electric connector and touching electrified elements by mistake, the plug-in mounting and use are convenient, the professional personnel can conveniently maintain and adjust, the high-voltage interlocking function is realized, the high-voltage interlocking is effectively ensured to be removed during maintenance, and the safe operation of the maintenance personnel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to an automotive non-shielded fast-charging connector. Background Art

[0002] Electrical connectors are widely used for internal electrical connections in automobiles. Automobile non-shielded fast-charging connectors include sockets and plugs. The socket is connected to the battery pack, and the plug is connected to the charging terminal to achieve the super-fast charging function of the automobile battery pack. The battery pack electrical connector needs to ensure a completely reliable electrical connection state, and it is not allowed to be easily disconnected during the charging process of the battery pack. Some existing electrical connectors are not safe enough and may have power outages, or during operation, the high-voltage interlock may still be connected, and maintenance personnel may accidentally touch live components, posing a risk of electric shock. Some electrical connectors have too many terminal components and high manufacturing costs. With the relaxation of EMC requirements, shielding function is no longer a mandatory requirement, especially for quick connectors that connect the charging station to the battery. Utility Model Content

[0003] In order to overcome the deficiencies of the above-mentioned existing problems, the utility model provides an automotive non-shielded fast charging connector.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a non-shielded fast-charging connector for automobiles, comprising a socket assembly, a plug assembly and a locking bolt, the socket assembly comprising a socket shell, a high-voltage copper column assembly and a low-voltage assembly are fixedly installed in the socket shell, the plug assembly comprises a plug shell, the plug shell is provided with a cross-connected bolt installation cavity and a cable installation cavity, a high-voltage copper busbar assembly and a low-voltage male terminal assembly are fixedly installed in the bolt installation cavity, and a flap is provided on the top, the cable assembly is inserted in the cable installation cavity, and its head is electrically connected to the high-voltage copper busbar assembly, the high-voltage copper busbar assembly is fixedly connected to the high-voltage copper column assembly through the high-voltage terminal bolt, the locking bolt passes through the flap and the plug shell and is fixedly connected to the socket shell, a low-voltage short-circuit terminal is provided at the bottom of the flap, and the low-voltage short-circuit terminal is electrically connected to the upper end of the low-voltage male terminal assembly.

[0005] According to another embodiment of the utility model, the cable assembly further includes a copper busbar, a wire, a wire clip, a wire cover, a retaining ring and a wire sealing ring, the wire clip, the wire cover, the retaining ring and the wire sealing ring are sleeved on the wire, and the copper busbar is welded to the wire.

[0006] According to another embodiment of the utility model, the copper busbar further includes: the copper busbar is an integral forged structure, and a high-voltage copper busbar assembly is integrally formed therewith; the high-voltage copper column assembly includes two high-voltage copper columns; and the high-voltage terminal bolt passes through the connection hole of the high-voltage copper busbar and is fixedly connected to the high-voltage copper column.

[0007] According to another embodiment of the utility model, further comprising: a temperature sensing hole is provided on the high-voltage copper column, and a temperature sensor or a thermistor is fixedly installed in the temperature sensing hole.

[0008] According to another embodiment of the utility model, the socket housing and the plug housing are both injection molded parts, and a plurality of metal nuts and metal bushings for locking bolts are integrally injection molded therewith, at least one annular groove is provided on the outer circle of the metal nut and the metal bushing, and a serrated structure is provided on the outer circle of the metal nut.

[0009] According to another embodiment of the utility model, it further includes that the flip cover is hingedly connected to the plug housing, and a cantilever plate is provided on the plug housing at the hinged connection, a limiting boss is provided on the cantilever plate, and a first boss and a second boss are correspondingly provided on the flip cover at the hinged connection, when the flip cover is closed, the second boss abuts against the limiting boss, and when the flip cover is opened, the first boss abuts against the limiting boss.

[0010] According to another embodiment of the utility model, the socket housing is further provided with a mounting flange surface, a plurality of socket fixing holes are provided on the mounting flange surface, and at least one anti-mistake positioning column is provided.

[0011] According to another embodiment of the utility model, further comprising: a bolt limiting cap for preventing the high-voltage terminal bolt from falling out is fixedly installed in the bolt installation cavity.

[0012] According to another embodiment of the utility model, the low-voltage component is further provided with an independent low-voltage plug housing.

[0013] According to another embodiment of the utility model, the high voltage terminal bolt is pre-installed in the socket housing.

[0014] The beneficial effects of the utility model are that the electrical connector has high safety performance, effectively ensures safe connection between terminals, ensures safe connection between socket components and plug components, prevents non-professionals from easily opening the electrical connector and accidentally touching live components, is easy to plug in and use, and is convenient for professionals to perform maintenance and adjustments, has a high-voltage interlocking function, and effectively ensures that the high-voltage interlock is released during maintenance, ensuring safe operation of maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is an explosion schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the metal nut and the metal bushing on the socket housing;

[0019] Figure 4 It is a schematic diagram of the explosion structure of the metal nut and metal bushing on the socket housing;

[0020] Figure 5 is a schematic diagram of the bushing structure on the plug housing;

[0021] Figure 6 It is a schematic diagram of the structure of the connection between the flip cover and the plug housing;

[0022] Figure 7 It is a schematic diagram of the limiting structure at the connection between the flip cover and the plug housing;

[0023] Figure 8 is a schematic diagram of the structure of the socket housing;

[0024] Fig. 9 It is a schematic diagram of the structure of the copper busbar;

[0025] Fig.10 It is a schematic diagram of the cross-sectional structure of the copper busbar;

[0026] Fig.11 It is a partial cross-sectional schematic diagram of the utility model;

[0027] Fig.12 It is another partial cross-sectional schematic diagram of the utility model;

[0028] Fig.13 is a schematic cross-sectional view of a socket housing;

[0029] Fig.14 It is a schematic diagram of the connection structure of the low-voltage components;

[0030] Fig.15 It is a schematic diagram of the terminal connections of low voltage components;

[0031] Fig.16 It is a schematic diagram of the structure of the high voltage terminal bolt and the locking bolt;

[0032] Fig.17 This is a schematic diagram of the structure when installing the high-voltage terminal bolts;

[0033] Fig.18 It is a schematic diagram of the structure when installing the locking bolt;

[0034] In the figure, the socket housing 1, the mounting flange surface 11, the anti-mistake positioning column 12, the socket fixing hole 13, the plug housing 2, the flip cover 21, the low-voltage short-circuit terminal 211, the bolt mounting cavity 22, the cable mounting cavity 23, the first boss 24, the second boss 25, the overhanging plate 26, the limiting boss 261, the cable assembly 3, the copper bus 31, the high-voltage copper bus 311, the wire 32, the wire card 33, the wire cover 34, the retaining ring 35, the wire sealing ring 36, the high-voltage terminal bolt 4, the second anti-touch cap 41, the bolt limiting cap 42, the low-voltage male terminal assembly 5, the high-voltage copper column assembly 6, the first anti-touch cap 61, the low-voltage assembly 7, the low-voltage plug housing 71, the locking bolt 8, the metal nut 9, the metal bushing 10, the variable cross-section area a, and the welding area b. DETAILED DESCRIPTION

[0035] like Figure 1-18 It is a structural schematic diagram of the utility model, an automotive non-shielded fast charging connector, including a socket assembly, a plug assembly and a locking bolt 8, the socket assembly including a socket housing 1, a high-voltage copper column assembly 6 and a low-voltage assembly 7 are fixedly installed in the socket housing 1, the plug assembly includes a plug housing 2, the plug housing 2 is provided with a cross-connected bolt installation cavity 22 and a cable installation cavity 23, a high-voltage copper busbar assembly and a low-voltage male terminal assembly 5 are fixedly installed in the bolt installation cavity 22, and a flip cover 21 is provided on the top, the cable assembly 3 is inserted in the cable installation cavity 23, and its head is electrically connected to the high-voltage copper busbar assembly, the high-voltage copper busbar assembly is fixedly connected to the high-voltage copper column assembly 6 through the high-voltage terminal bolt 4, the locking bolt 8 passes through the flip cover 21 and the plug housing 2 and is fixedly connected to the socket housing 1, a low-voltage short-circuit terminal 211 is provided at the bottom of the flip cover 21, and the low-voltage short-circuit terminal 211 is electrically connected to the upper end of the low-voltage male terminal assembly 5.

[0036] The electrical connector has a high voltage interlocking function and is optional.

[0037] The locking bolt 8 is located between the two cable installation cavities 23. When locked, the socket assembly and the plug assembly are in a good stress state and the locking state is stable.

[0038] The connection between the socket assembly and the plug assembly is fastened with bolts, which is highly safe. Moreover, the locking bolt 8 and the high-voltage terminal bolt 4 are locked to further improve the safety factor and ensure that the socket assembly and the plug assembly will not loosen when connected.

[0039] When the socket assembly and the plug assembly are connected, it is necessary to first tighten the high-voltage terminal bolt 4 , then close the flip cover 21 , and then tighten the locking bolt 8 .

[0040] Each bolt is equipped with spring washers and flat washers to prevent the bolts from loosening and maintain the bolt connection torque. At the same time, the bolt head is coated with glue to maintain the torque and ensure the reliability of the terminal connection.

[0041] The flip cover 21 is integrated with a low voltage short-circuit terminal 211 , which automatically disconnects the high voltage interlock when the flip cover 21 is opened, and connects the high voltage interlock when the flip cover 21 is closed.

[0042] The installation direction of the plug housing 2 is at an angle of 90°-150° to meet customer customization requirements.

[0043] Preferably, the cable assembly 3 includes a copper busbar 31, a wire 32, a wire clip 33, a wire cover 34, a retaining ring 35 and a wire sealing ring 36, the wire clip 33, the wire cover 34, the retaining ring 35 and the wire sealing ring 36 are sleeved on the wire 32, and the copper busbar 31 is connected to the wire 32 by ultrasonic welding.

[0044] The copper busbar 31 is provided with a variable cross-section area a and a welding area b, and adopts a variable cross-section design and a precision forging process. The cross-sectional area of ​​the welding area is large, which meets the current carrying requirements of large-diameter copper wires. The welding area b meets the requirements of welding large-diameter copper wires or aluminum wires.

[0045] The conductor 32 can be made of 95-150 square unshielded copper wire or aluminum wire, which is particularly suitable for high current solutions, such as the application of fast charging charging station connected to the battery pack. The conductor 32 is connected to the copper bus 31 by ultrasonic welding.

[0046] Preferably, the copper busbar 31 is an integral forging structure, and a high-voltage copper busbar 311 is integrally formed with a high-voltage copper busbar assembly. The high-voltage copper column assembly 6 includes two high-voltage copper columns, and the high-voltage terminal bolt 4 passes through the connection hole of the high-voltage copper busbar 311 and is fixedly connected to the high-voltage copper column.

[0047] The copper busbar 31 is an integral forging structure, which reduces the number of terminal components, facilitates assembly, and can meet the requirements of welding and overcurrent.

[0048] The head of the high-voltage terminal bolt 4 is provided with an inner torx socket, and the second anti-touch cap 41 is provided with an avoidance middle hole, so that the torx socket wrench can be inserted into the inner torx socket conveniently.

[0049] By providing the first anti-touch cap 61 and the second anti-touch cap 41 , it is prevented that the operator can easily touch the high-voltage copper bus and the high-voltage copper column that may be electrified.

[0050] Preferably, the high-voltage copper column is provided with a temperature sensing hole, in which a temperature sensor or a thermistor is fixedly installed. By providing the temperature sensor or thermistor, the temperature of the terminal is monitored to prevent overheating and ensure safe use of the electrical connector.

[0051] Preferably, the socket housing 1 and the plug housing 2 are both injection molded parts, and are integrally molded with a plurality of metal nuts 9 and metal bushings 10 for locking bolts, the outer circumferences of the metal nuts 9 and the metal bushings 10 are each provided with at least one annular groove, and the outer circumference of the metal nut 9 is provided with a serration structure. The socket housing 1 and the plug housing 2 are both made of plastic, without a metal shell, and have no shielding function.

[0052] Through the one-piece injection molding process, the position of the bushing and the housing is relatively fixed, and the bushing and the housing have a certain contact area, which prevents the customer from installing the bolts and causing the bolts to invade the housing due to excessive torque, resulting in the bolts loosening.

[0053] Preferably, the flip cover 21 is hingedly connected to the plug housing 2, and an overhanging plate 26 is provided on the plug housing 2 at the hinged connection, and a limiting boss 261 is provided on the overhanging plate 26. The hinged connection is located on the flip cover 21 and a first boss 24 and a second boss 25 are correspondingly provided. When the flip cover 21 is closed, the second boss 25 abuts against the limiting boss 261. When the flip cover 21 is opened, the first boss 24 abuts against the limiting boss 261.

[0054] The limiting boss 261 , the first boss 24 and the second boss 25 are all triangular in shape. When the flip cover 21 is turned over, the overhanging plate 26 will be deformed by force, so that the flip cover 21 switches between different states.

[0055] By setting two damping positions, it is ensured that when the flip cover 21 is closed, the second boss 25 abuts against the limiting boss 261, and the flip cover 21 cannot be easily opened, preventing non-professionals from accidentally opening the flip cover 21. When the flip cover 21 is opened, the first boss 24 abuts against the limiting boss 261, and the flip cover 21 will not close automatically, which is convenient for maintenance personnel to automatically close it during operation and to loosen or tighten the high-voltage terminal bolt 4.

[0056] Preferably, the socket housing 1 is provided with a mounting flange surface 11 , and the mounting flange surface 11 is provided with a plurality of socket fixing holes 13 and at least one anti-misalignment positioning column 12 .

[0057] The socket housing 1 has four socket fixing holes 13 which are arranged asymmetrically relative to the openings at the board ends. The anti-mistake positioning columns 12 are provided to facilitate anti-mistake identification during the insertion of the plug assembly, thereby facilitating accurate and rapid insertion.

[0058] Preferably, a bolt limiting cap 42 for preventing the high-voltage terminal bolt 4 from falling out is fixedly installed in the bolt installation cavity 22 .

[0059] By providing the bolt limiting cap 42 , the high-voltage terminal bolt 4 remains in the bolt installation cavity 22 after being loosened from the high-voltage copper column, thereby preventing the high-voltage terminal bolt 4 from being lost and facilitating the installation of the high-voltage terminal bolt 4 .

[0060] Preferably, the low-voltage component 7 is provided with an independent low-voltage plug housing 71 .

[0061] By providing an independent low-voltage plug housing 71, it is convenient for customers to assemble and disassemble in the battery pack. The low-voltage plug housing 71 is detachably connected to the socket housing 1 through a quick-fit snap-fit ​​structure. The low-voltage plug housing 71 has a secondary lock function to effectively prevent the terminal from pushing the pin.

[0062] Preferably, the high voltage terminal bolt 4 is pre-installed in the socket housing 1 .

[0063] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the appended claims, but all will fall within the scope of protection of the present invention.

Claims

1. A non-shielded fast charging connector for automobiles, characterized in that: The invention comprises a socket assembly, a plug assembly and a locking bolt (8), wherein the socket assembly comprises a socket housing (1), wherein a high-voltage copper column assembly (6) and a low-voltage assembly (7) are fixedly installed in the socket housing (1), and the plug assembly comprises a plug housing (2), wherein the plug housing (2) is provided with a bolt installation cavity (22) and a cable installation cavity (23) which are intersecting and communicating with each other, wherein a high-voltage copper busbar assembly and a low-voltage male terminal assembly (5) are fixedly installed in the bolt installation cavity (22), and a flip cover (21) is provided on the top of the bolt installation cavity (22), wherein the cable assembly (3) is inserted into the cable installation cavity (23), and the head of the cable assembly is electrically connected to the high-voltage copper busbar assembly, wherein the high-voltage copper busbar assembly is fixedly connected to the high-voltage copper column assembly (6) via a high-voltage terminal bolt (4), wherein the locking bolt (8) passes through the flip cover (21) and the plug housing (2) and is fixedly connected to the socket housing (1), wherein a low-voltage short-circuit terminal (211) is provided at the bottom of the flip cover (21), and wherein the low-voltage short-circuit terminal (211) is electrically connected to the upper end of the low-voltage male terminal assembly (5).

2. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: The cable assembly (3) comprises a copper busbar (31), a wire (32), a wire clamp (33), a wire cover (34), a retaining ring (35) and a wire sealing ring (36); the wire clamp (33), the wire cover (34), the retaining ring (35) and the wire sealing ring (36) are sleeved on the wire (32); and the copper busbar (31) and the wire (32) are connected by welding.

3. The automotive non-shielded fast charging connector according to claim 2 is characterized in that: The copper busbar (31) is an integral forging structure and is integrally formed with a high-voltage copper busbar (311) of a high-voltage copper busbar assembly. The high-voltage copper column assembly (6) comprises two high-voltage copper columns. The high-voltage terminal bolt (4) passes through a connection hole of the high-voltage copper busbar (311) and is fixedly connected to the high-voltage copper column.

4. The automotive non-shielded fast charging connector according to claim 3 is characterized in that: The high-voltage copper column is provided with a temperature sensing hole, in which a temperature sensor or a thermistor is fixedly installed.

5. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: The socket housing (1) and the plug housing (2) are both injection-molded parts, and are integrally injection-molded with a plurality of metal nuts (9) and metal bushings (10) for locking bolts. The outer circumferences of the metal nuts (9) and the metal bushings (10) are each provided with at least one annular groove, and the outer circumference of the metal nut (9) is provided with a serration structure.

6. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: The flip cover (21) is hingedly connected to the plug housing (2), and a cantilever plate (26) is provided on the plug housing (2) at the hinged connection, and a limiting boss (261) is provided on the cantilever plate (26). A first boss (24) and a second boss (25) are correspondingly provided on the flip cover (21) at the hinged connection. When the flip cover (21) is closed, the second boss (25) abuts against the limiting boss (261), and when the flip cover (21) is opened, the first boss (24) abuts against the limiting boss (261).

7. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: The socket housing (1) is provided with a mounting flange surface (11), and the mounting flange surface (11) is provided with a plurality of socket fixing holes (13) and at least one anti-misalignment positioning column (12).

8. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: A bolt limiting cap (42) for preventing the high-voltage terminal bolt (4) from falling out is fixedly installed in the bolt installation cavity (22).

9. The automotive non-shielded fast charging connector according to claim 1 is characterized in that: The low-voltage component (7) is provided with an independent low-voltage plug housing (71).

10. The automotive non-shielded fast charging connector according to claim 1, characterized in that: The high voltage terminal bolt (4) is pre-installed in the socket housing (1).

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