A power connector capable of transmitting transient ultra-large current

Abstract

A power connector capable of transmitting transient ultra-large current, in which a plurality of plug copper bars are fixed in the plug housing, and socket copper bars corresponding to the plug copper bars are fixed in the socket housing; the power connector includes a plurality of anti-offset sleeves, the anti-offset sleeves are square tube-shaped, and the inside of each anti-offset sleeve is used to accommodate a single plug copper bar and the corresponding single socket copper bar; connection holes are provided on the plug copper bar, the socket copper bar and the anti-offset sleeve. When the plug is connected to the socket, a bolt penetrates through the connection hole and is screwed with a nut to press the plug copper bar, the socket copper bar and the anti-offset sleeve together. The present invention solves the problems of tremor, bending or movement between electrical connectors caused by electromagnetic force when the power connector passes through transient ultra-large current, and avoids disconnection or short-circuit phenomena of electrical connectors. The power connector of the present invention can withstand and transmit transient high voltage and ultra-large current, ensure that the working current can be normally transmitted, and does not show phenomena such as overheating and burning.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and particularly to a power connector capable of transmitting transient ultra-large current. Background Art

[0002] Among existing connectors, there are many power connectors for transmitting current. Power connectors are generally used for power supply of small devices, and the working current does not exceed 1000A. In this case, the electromagnetic force generated due to transient mutation of current is very small and will not cause tremor or movement of the electrical connectors inside the power connector.

[0003] With the development of electromagnetic devices and laser devices, the required magnitude of instantaneous current release is getting larger and larger. The current passing through the link basically exceeds the level of ten thousand amperes, and the voltage also reaches the level of ten thousand volts. In this case, the electromagnetic force generated due to the mutation of transient ultra-large current will increase sharply, which will have a non-negligible impact on the electrical connectors inside the power connector. When the passing current is alternating current, the electrical connectors will vibrate under the action of electromagnetic force; when the passing current is direct current, the electrical connectors will bend or move under the action of electromagnetic force. Once the electrical connectors vibrate, bend or move, in the case of less serious consequences, it will cause the disconnection of the electrical connectors; in the case of more serious consequences, it will cause a short circuit between the electrical connectors. These are all problems that have never been considered before in the design and production of existing power connectors. Therefore, it is necessary to specifically design a connector capable of transmitting transient ultra-large current to ensure the normal operation of electrical equipment. Summary of the Invention

[0004] In order to overcome the deficiencies in the background art, the present invention discloses a power connector capable of transmitting transient ultra-large current, and its purpose is to: reduce the impact of electromagnetic force on electrical connectors and ensure the normal operation of electrical equipment.

[0005] To achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0006] A power connector capable of transmitting transient ultra-large current includes a plug and a socket. The plug includes a plug housing, and the socket includes a socket housing. A plurality of plug copper bars are fixed in the plug housing, and socket copper bars corresponding to the plug copper bars are fixed in the socket housing;

[0007] The power connector further includes a plurality of anti-deviation sleeves. The anti-deviation sleeves are square tube-shaped, and the interior of each anti-deviation sleeve is used to accommodate a single plug copper bar and its corresponding single socket copper bar; Connecting holes for bolt penetration connection are provided on the plug copper bar, socket copper bar and anti-deviation sleeve. When the plug is connected to the socket, the bolt penetrates the connecting hole and is screwed with a nut to press the plug copper bar, socket copper bar and anti-deviation sleeve together;

[0008] An insulating partition board for isolating adjacent anti-deviation sleeves is provided on the socket housing.

[0009] Further improving the technical solution, an avoidance hole is provided on the surface of the anti-deviation sleeve facing the bolt head. The bolt head passes through the avoidance hole, the bolt rod part penetrates through the connection hole, and is screwed with a nut to press the plug copper row, the socket copper row and the anti-deviation sleeve together.

[0010] Further improving the technical solution, before connection, a disc spring and a washer are sleeved on the bolt rod part.

[0011] Further improving the technical solution, the material of the anti-deviation sleeve is copper alloy or stainless steel.

[0012] Further improving the technical solution, the socket housing is mainly composed of an inner core, an insulating sheath, a sliding insulating sleeve, a threaded connection sleeve and a cable compression sleeve; the inner core includes an inner core body made of a rod-shaped insulator, and a plurality of socket copper rows of different lengths are fixed in the inner core body. The rear end of the socket copper row is connected to the cable; the insulating sheath is composed of two semi-circular insulating sleeves. When the plug is connected to the socket, the two semi-circular insulating sleeves surround the front part of the inner core body for isolating each anti-deviation sleeve from the outside; the inner core and the insulating sheath are installed inside the sliding insulating sleeve and are slidably connected to the sliding insulating sleeve; a threaded connection sleeve is sleeved on the front part of the sliding insulating sleeve, and the threaded connection sleeve is provided with an internal thread for screwing with the plug housing; a cable compression sleeve is screwed on the rear part of the sliding insulating sleeve, and the cable compression sleeve is used for tightening the cable.

[0013] Further improving the technical solution, the inner core body extends forward, and its extension part forms an insulating partition board for isolating adjacent anti-deviation sleeves.

[0014] Further improving the technical solution, two socket copper rows of different lengths are fixed in the inner core body. A ferrule is provided at the rear end of the socket copper row. For the longer socket copper row, its ferrule is offset and coaxially arranged with the ferrule on the shorter socket copper row. The ferrule on the shorter socket copper row is coaxially arranged with the cable compression sleeve; the cable is a coaxial cable for transmitting positive and negative voltage. One of the socket copper rows is connected to the positive pole of the coaxial cable through the ferrule, and the other socket copper row is connected to the negative pole of the coaxial cable through the ferrule.

[0015] Further improving the technical solution, the sliding insulating sleeve is composed of an inner layer and an outer layer. The inner layer is an insulating layer, and the outer layer is a coating layer. A slide rail is provided in the coating layer; the inner core body is provided with a chute corresponding to the slide rail, and the inner core body is slidably connected to the sliding insulating sleeve along the slide rail.

[0016] Further improve the technical solution. A front sealing ring is installed at the front of the sliding insulating sleeve, and the front sealing ring is used for sealing between the sliding insulating sleeve and the plug housing; a rear sealing ring is installed at the rear of the sliding insulating sleeve, and the rear sealing ring is used for sealing between the sliding insulating sleeve and the cable.

[0017] Further improve the technical solution. The plug is connected to the power distribution cabinet, and a flange for connecting to the power distribution cabinet is provided on the plug housing; an external thread screwed to the threaded connection sleeve and a positioning keyway are also provided on the plug housing; the socket is connected to the electrical equipment through a cable, and a positioning key corresponding to the positioning keyway is provided on the sliding insulating sleeve.

[0018] Due to the adoption of the above technical solution, compared with the background technology, the present invention has the following beneficial effects:

[0019] The present invention solves the problems of tremor, bending or movement between electrical connectors caused by electromagnetic force when the power connector passes through a transient super-large current, and avoids the phenomenon of disconnection or short circuit of the electrical connectors. At the same time, it can also be connected to a coaxial cable to eliminate the electromagnetic force generated in the positive and negative cables.

[0020] The power connector of the present invention can withstand and transmit transient high voltage and super-large current, ensure that the working current can be normally transmitted (the contact resistance is stable), and does not appear phenomena such as overheating and burning, providing stable and reliable voltage and current for the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of the plug.

[0022] Figure 2 It is a schematic structural diagram of the coaxial cable.

[0023] Figure 3 It is a schematic structural diagram of the socket.

[0024] Figure 4 It is a schematic structural diagram of the anti-deviation sleeve when the plug and the socket are connected.

[0025] In the figure: 1. Anti-deviation sleeve; 2. Plug copper bar; 3. Plug housing; 31. External thread; 4. Bolt; 5. Butterfly gasket; 6. Coaxial cable; 61. Inner conductor; 62. Outer conductor; 63. Cable protection sleeve; 7. Nut; 8. Sliding insulating sleeve; 81. Insulating layer; 82. Coating layer; 9. Insulating sheath; 10. Inner core body; 101. Insulating partition board; 11. Socket copper bar; 111. Ferrule; 12. Threaded connection sleeve; 13. Cable compression sleeve; 14. Front sealing ring; 15. Rear sealing ring. DETAILED DESCRIPTION OF THE INVENTION

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention. For example, although the specification describes the power connector capable of transmitting transient ultra-large current of the present invention when it is in a horizontal state in combination with the drawings, this does not prevent the use of the power connector capable of transmitting transient ultra-large current of the present invention in other directions. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0027] It should be noted that in the description of the present invention, the terms "front" and "rear" indicating directions are relative to the plugging direction of the plug and the socket. The designated term "front" refers to the plugging direction of the plug and the socket. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0028] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] A power connector capable of transmitting transient ultra-large current is used for connecting a laser-powered device to a power distribution cabinet. The power distribution cabinet needs to provide high-voltage and large-current direct current to the laser-powered device through this power connector. The power connector includes a plug, a socket, and an anti-offset sleeve 1. The plug includes a plug housing 3, and the socket includes a socket housing.

[0030] The plug housing 3 is arranged on the power distribution cabinet. For the convenience of fixing, a flange for connecting to the power distribution cabinet is provided on the plug housing 3. As Figure 1As shown in the figure, two plug busbars 2 are fixed inside the plug housing 3. The two plug busbars 2 are arranged with one long and one short to stagger the distance and prevent short circuits. At the rear ends of the two plug busbars 2, there are foot-shaped connecting plates, which are used to connect the positive and negative plates in the power distribution cabinet. Since the current passing through is large, it is required that the conductive contact surfaces between the foot-shaped connecting plates and the positive and negative plates are large and the contact is stable and reliable. Therefore, two connecting holes are provided on each of the foot-shaped connecting plates and the positive and negative plates, and they are crimped through a bolt 4 and nut 7 connection pair. An external thread 31 for connecting to the socket is also provided on the plug housing 3. When not connected to the socket, in order to avoid the risk of electric shock caused by the exposed plug busbars 2, a protective cover with an internal thread (not shown in the figure) can be screwed onto the plug housing 3 to achieve electric shock protection.

[0031] Inside the socket housing, a coaxial cable 6 is connected, and the other end of the coaxial cable 6 is connected to the laser-powered device. As Figure 2 shown, the coaxial cable 6 is composed of an inner conductor 61, an outer conductor 62, and inner and outer protective sleeves 63. The inner conductor 61 is connected to the positive pole, and the outer conductor 62 is connected to the negative pole. Due to the coaxial arrangement, the sudden change of the transient super-large current in the inner conductor 61 will not generate electromagnetic force on the outer conductor 62. Similarly, the sudden change of the transient super-large current in the outer conductor 62 will not generate electromagnetic force on the inner conductor 61. Therefore, using the coaxial cable 6 can avoid the generation of electromagnetic force, prevent the tremor and jitter of the inner conductor 61 of the cable, and is conducive to the stable transmission of electric energy.

[0032] As Figure 3 shown, the socket housing is mainly composed of an inner core, an insulating sheath 9, a sliding insulating sleeve 8, a threaded connecting sleeve 12, and a cable compression sleeve 13. Among them, the inner core includes an inner core body 10 made of a rod-shaped insulator. Inside the inner core body 10, two socket busbars 11 of different lengths are fixed. At the rear end of the socket busbar 11, there is a ferrule 111. For the longer socket busbar 11, its ferrule 111 is offset and coaxially arranged with the ferrule 111 on the shorter socket busbar 11. The ferrule 111 on the shorter socket busbar 11 is coaxially arranged with the cable compression sleeve 13. The ferrule 111 on the shorter socket busbar 11 is sleeved on the inner conductor 61 of the coaxial cable 6 and tightened to connect the positive pole of the power supply; the ferrule 111 on the longer socket busbar 11 is sleeved on the outer conductor 62 of the coaxial cable 6 and tightened to connect the negative pole of the power supply. Such a design, on the one hand, is to avoid the bending of the coaxial cable 6 inside the socket housing, resulting in unreliable connection; on the other hand, it is to stagger the distance and prevent short circuits between the positive and negative poles. In order to prevent inter-electrode discharge and at the same time reduce the short-circuit risk, the inner core body 10 extends forward, and its extension part forms an insulating partition plate 101 for isolating adjacent anti-offset sleeves 1.

[0033] The insulating sheath 9 is composed of two semi-circular insulating sleeves. When the plug is connected to the socket, the two semi-circular insulating sleeves surround the front part of the inner core 10, which is used for isolating the anti-offset sleeve 1 from the outside and preventing the occurrence of electric leakage. The inner core and the insulating sheath 9 are installed inside the sliding insulating sleeve 8 and are slidably connected to the sliding insulating sleeve 8. Such a design is to facilitate the connection between the plug copper row 2 and the socket copper row 11. Before the connection between the plug copper row 2 and the socket copper row 11, the sliding insulating sleeve 8 is slid backward to expose the socket copper row 11 on the inner core; after the connection between the plug copper row 2 and the socket copper row 11, two semi-circular insulating sleeves are surrounded around the connection part, and then the sliding insulating sleeve 8 is slid forward to cover the insulating sheath 9.

[0034] The sliding insulating sleeve 8 consists of an inner layer and an outer layer. The inner layer is the insulating layer 81, and the outer layer is the covering layer 82. The insulating layer 81 can be made of materials such as ceramics, and the covering layer 82 can be made of engineering plastics or other non-conductive materials. In order to achieve sliding connection, a slide rail (not shown in the figure) is provided inside the covering layer 82, and a chute corresponding to the slide rail is provided on the inner core 10 (not shown in the figure), and the inner core 10 is slidably connected to the sliding insulating sleeve 8 along the slide rail. A threaded connection sleeve 12 is sleeved on the front part of the sliding insulating sleeve 8. The threaded connection sleeve 12 is provided with internal threads. During connection, the threaded connection sleeve 12 is screwed with the external threads 31 of the plug housing 3. In order to achieve angular plugging of the upper and lower socket housings and the plug housing 3, five-key positioning grooves are also provided on the plug housing 3, and five keys corresponding to the five-key positioning grooves are provided on the sliding insulating sleeve 8. External threads are provided at the rear part of the sliding insulating sleeve 8, and internal threads are provided on the cable compression sleeve 13. The cable compression sleeve 13 is screwed with the external threads of the sliding insulating sleeve 8 for tightening the cable. In order to ensure waterproofness, a front sealing ring 14 is installed at the front part of the sliding insulating sleeve 8, and the front sealing ring 14 is used for sealing between the sliding insulating sleeve 8 and the plug housing 3; a rear sealing ring 15 is installed at the rear part of the sliding insulating sleeve 8, and the rear sealing ring 15 is used for sealing between the sliding insulating sleeve 8 and the cable.

[0035] Such as Figure 4As shown in the figure, the anti-deviation sleeve 1 is in the shape of a square tube. The internal space of each anti-deviation sleeve 1 is used to accommodate a single plug copper row 2 and the corresponding single socket copper row 11. Four connection holes for the bolt 4 to pass through and connect are provided on the plug copper row 2, the socket copper row 11 and the anti-deviation sleeve 1. When the plug and the socket are connected, the bolt 4 passes through the connection holes and is screwed with the nut 7 to press the plug copper row 2, the socket copper row 11 and the anti-deviation sleeve 1 together. The main function of the anti-deviation sleeve 1 is to hoop the plug copper row 2 and the socket copper row 11 together. When subjected to electromagnetic force impact, it can prevent the tremor and jitter between the plug copper row 2 and the socket copper row 11, thereby reducing the looseness of the bolt 4 and nut 7 connection pair caused by the tremor and jitter, and improving the safety of power transmission. Another function of the anti-deviation sleeve 1 is to improve the connection rigidity between the plug copper row 2 and the socket copper row 11. When subjected to the electromagnetic force impact generated by other conductors, its anti-movement performance and anti-bending performance are enhanced, avoiding short circuits caused by excessive movement or bending.

[0036] Generally, in order to facilitate the smooth insertion of the plug copper row 2 and the socket copper row 11, a certain gap needs to be left inside the anti-deviation sleeve 1. If a tight connection between the plug copper row 2, the socket copper row 11 and the anti-deviation sleeve 1 is to be achieved, a relatively large torque needs to be applied to the bolt 4 and nut 7 to deform the anti-deviation sleeve 1, thereby achieving a tight connection. However, once the anti-deviation sleeve 1 is deformed, it is not conducive to the re-insertion of the plug copper row 2 and the socket copper row 11 next time. Therefore, the technical solution is further improved. An avoidance hole is provided on the surface of the anti-deviation sleeve 1 facing the head of the bolt 4. The head of the bolt 4 passes through the avoidance hole, the rod part of the bolt 4 passes through the connection hole, and is screwed with the nut 7 to press the plug copper row 2, the socket copper row 11 and the anti-deviation sleeve 1 together. In this way, a tight connection between the plug copper row 2, the socket copper row 11 and the anti-deviation sleeve 1 is achieved, and the anti-deviation sleeve 1 is not deformed, which can perfectly solve the above problems. In this embodiment, the material of the anti-deviation sleeve 1 is stainless steel, or other materials such as copper alloy and other metal materials that take into account conductivity and certain rigidity can also be used.

[0037] When powered on, heat will be generated due to the tiny contact resistance between the plug copper row 2 and the socket copper row 11. This cold shrinkage change will damage the pre-tightening force of the bolt 4 and nut 7 connection pair itself, causing the bolt 4 to loosen. Therefore, before connection, a disc spring washer 5 and a washer are sleeved on the rod part of the bolt 4. After connection, the disc spring washer 5 can absorb the cold shrinkage change and prevent the bolt 4 from loosening.

[0038] The parts not described in detail are prior art. Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power connector capable of transmitting transient ultra-large current, comprising a plug and a socket. The plug includes a plug housing, and the socket includes a socket housing, and is characterized in that: A plurality of plug busbars are fixed inside the plug housing, and a plurality of socket busbars corresponding to the plug busbars are fixed inside the socket housing; The power connector further includes a plurality of anti-deviation sleeves. The anti-deviation sleeves are square tube-shaped. The interior of each anti-deviation sleeve is used to accommodate a single plug busbar and its corresponding single socket busbar; connection holes for bolt penetration connection are provided on the plug busbar, the socket busbar, and the anti-deviation sleeve. When the plug and the socket are connected, the bolt penetrates through the connection holes and is screwed with a nut to press the plug busbar, the socket busbar, and the anti-deviation sleeve together; An insulating partition plate for isolating adjacent anti-deviation sleeves is provided on the socket housing.

2. The power connector capable of transmitting transient super-large current according to claim 1, wherein: An avoidance hole is provided on one side of the anti-deviation sleeve facing the bolt head. The bolt head passes through the avoidance hole, the bolt rod portion penetrates through the connection hole, and is screwed with a nut to press the plug busbar, the socket busbar, and the anti-deviation sleeve together.

3. A power connector capable of transmitting transient super-large current according to claim 1 or 2, characterized in that: Before connection, a disc spring washer and a washer are sleeved on the bolt rod portion of the bolt.

4. The power connector capable of transmitting transient super-large current according to claim 1, wherein: The material of the anti-deviation sleeve is copper alloy or stainless steel.

5. The power connector capable of transmitting transient super-large current according to claim 1, characterized in that: The socket housing is mainly composed of an inner core, an insulating sheath, a sliding insulating sleeve, a threaded connection sleeve, and a cable compression sleeve; the inner core includes an inner core body made of a rod-shaped insulator, and a plurality of socket busbars of different lengths are fixed inside the inner core body. The rear end of the socket busbar is connected to the cable; the insulating sheath is composed of two semi-circular insulating sleeves. When the plug and the socket are connected, the two semi-circular insulating sleeves surround the front part of the inner core body for isolating each anti-deviation sleeve from the outside; the inner core and the insulating sheath are installed inside the sliding insulating sleeve and are slidably connected to the sliding insulating sleeve; a threaded connection sleeve is sleeved on the front part of the sliding insulating sleeve. The threaded connection sleeve is provided with an internal thread for screwing with the plug housing; a cable compression sleeve is screwed on the rear part of the sliding insulating sleeve, and the cable compression sleeve is used to tighten the cable.

6. The power connector capable of transmitting transient super-large current as claimed in claim 5, characterized in that: The inner core body extends forward, and its extension forms an insulating partition plate for isolating adjacent anti-deviation sleeves.

7. The power connector capable of transmitting transient super-large current according to claim 5, wherein: Two socket busbars of different lengths are fixed inside the inner core body. A ferrule is provided at the rear end of the socket busbar. For the longer socket busbar, its ferrule is offset and is coaxially arranged with the ferrule on the shorter socket busbar. The ferrule on the shorter socket busbar is coaxially arranged with the cable compression sleeve; the cable is a coaxial cable for transmitting positive and negative bipolar voltages. One of the socket busbars is connected to the positive pole of the coaxial cable through a ferrule, and the other socket busbar is connected to the negative pole of the coaxial cable through a ferrule.

8. The power supply connector capable of transmitting transient ultra-large current according to claim 5, characterized in that: The sliding insulating sleeve is composed of an inner layer and an outer layer. The inner layer is an insulating layer, and the outer layer is a covering layer. A slide rail is provided inside the covering layer; the inner core body is provided with a chute corresponding to the slide rail, and the inner core body is slidably connected to the sliding insulating sleeve along the slide rail.

9. The power connector capable of transmitting transient super-large current according to claim 5, characterized in that: at A front sealing ring is installed at the front part of the sliding insulating sleeve. The front sealing ring is used for sealing between the sliding insulating sleeve and the plug housing; a rear sealing ring is installed at the rear part of the sliding insulating sleeve. The rear sealing ring is used for sealing between the sliding insulating sleeve and the cable.

10. A power connector capable of transmitting transient ultra-large current as described in claim 5, characterized in that: The plug is connected to the power distribution cabinet. A flange for connecting to the power distribution cabinet is provided on the plug housing; an external thread for screwing with the threaded connection sleeve and a positioning keyway are also provided on the plug housing; the socket is connected to the electrical equipment through a cable. A positioning key corresponding to the positioning keyway for plugging is provided on the sliding insulating sleeve.

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