CN217788073U

CN217788073U - Shielding bus for direct current charger

Info

Publication number: CN217788073U
Application number: CN202221810092.6U
Authority: CN
Inventors: 吴春晖; 徐国永; 蒋晓玲; 曾为波; 朱永进; 孙宝李
Original assignee: Jiyi Power Technology Shanghai Co ltd
Current assignee: Jiyi Power Technology Shanghai Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-11-11
Anticipated expiration: 2032-07-14

Abstract

The application relates to a shielding bus for a direct current charger, which comprises a central conductor, wherein the central conductor is coated with an insulating layer, the surface of the insulating layer is provided with a grounding layer, a shielding ring network is arranged in the insulating layer, the central conductor penetrates through the shielding ring network, the shielding ring network is positioned between the grounding layer and the central conductor, and the shielding ring network extends to a port of the grounding layer; the central conductor is used for passing current, the insulating layer is used for improving the insulating property of the surface of the central conductor, the grounding layer is used for reliable grounding, the safety is improved, the shielding ring network can reduce the discharging phenomenon at the port of the central conductor and the port of the grounding layer, and the occurrence probability of accidents is reduced.

Description

Shielding bus for direct current charger

Technical Field

The application relates to the field of buses, in particular to a shielding bus for a direct current charger.

Background

When connecting electrical equipment such as charging piles and the like and corresponding power distribution equipment, buses are generally used because of large carried current, and the buses are used for collecting, distributing and transmitting electric energy.

The existing bus bars mostly adopt bare wires or stranded wires with rectangular or circular sections, and then an insulating layer is wrapped outside the bare wires or stranded wires to improve the insulating property.

Fill electric pile and use comparatively extensive battery charging outfit as new energy automobile field now, the operational environment is abominable when outdoor application, has the problem that can discharge between the port of bus and ground plane, and this probability that can improve the electric pile operation in the accident that fills, the electrical insulation performance of bus still remains to be improved.

SUMMERY OF THE UTILITY MODEL

In order to restrain partial discharge phenomena generated by a bus and a grounding layer port inside a charging pile, the application provides a shielding bus for a direct-current charger.

The application provides a shielding bus for direct current charging adopts following technical scheme:

the utility model provides a direct current charger is with shielding generating line, includes central conductor, and the central conductor cladding has the insulating layer, the surface of insulating layer is provided with the ground plane, be provided with the shielding looped netowrk in the insulating layer, the central conductor passes the shielding looped netowrk, the shielding looped netowrk is located the ground plane with between the central conductor, the shielding looped netowrk extends to the port department of ground plane.

By adopting the technical scheme, the central conductor is used for passing current, the insulating layer is used for improving the insulativity of the surface of the central conductor, the grounding layer is used for reliable grounding, the safety is improved, the shielding ring network can reduce the discharge phenomenon at the port parts of the central conductor and the grounding layer, and the occurrence probability of accidents is reduced.

Preferably, the edge of the shielding ring network is provided with a crimping fillet, and the crimping fillet is rolled along the direction far away from the central conductor.

Through adopting above-mentioned technical scheme, the stability that shielding looped netowrk position can be promoted at the in-process that the insulating layer was moulded plastics to the turn-up fillet, and do benefit to and promote shielding performance, further reduce the probability that discharges and take place.

Preferably, the edge of the edge is turned to form an opening.

Through adopting above-mentioned technical scheme, the opening can provide the outflow passageway for the bubble in the turn-up fillet at the in-process that the insulating layer was moulded plastics, reduces the quantity of the bubble in the insulating layer.

Preferably, the angle of the opening is 90 °.

By adopting the technical scheme, the optimal stability of the position of the shielding ring network and the optimization of the bubble channel can be realized through the 90-degree opening.

Preferably, a ground pillar is electrically connected between the shielding ring network and the ground layer.

Through adopting above-mentioned technical scheme, the ground connection pillar can promote the stability of shielding looped netowrk at the in-process that the insulating layer was moulded plastics, can also realize the electric connection between shielding looped netowrk and the ground plane.

Preferably, the shielding ring network includes a first shielding net and a second shielding net, the first shielding net is located at one port of the ground layer, and the second shielding net is located at the other port of the ground layer.

By adopting the technical scheme, the two ports of the grounding layer are independently protected, the shielding ring network does not need to extend to the middle part of the grounding layer, and the consumption of materials is reduced.

Preferably, the ground pillar includes a first ground pillar and a second ground pillar, the first ground pillar is fixedly connected between the first shielding mesh and one port of the ground layer, and the second ground pillar is fixedly connected between the second shielding mesh and the other port of the ground layer.

By adopting the technical scheme, the grounding strut can improve the stability of the shielding ring network in the injection molding process of the insulating layer, and can also realize the electrical connection between the shielding ring network and the grounding layer.

Preferably, the insulating layer is provided with a mounting ring corresponding to the position of the first shielding net, the insulating layer is provided with a mounting plate corresponding to the position of the second shielding net, the first grounding post is located in the mounting ring, and extends out of the side surface of the mounting ring, and the second grounding post is located in the mounting plate, and extends out of one side of the mounting plate.

Through adopting above-mentioned technical scheme, the mounting panel can enough play the effect of installation fixed center conductor with the collar, can also do benefit to the ground connection that realizes the shielding looped netowrk.

Preferably, a portion of the insulating layer located at an end of the center conductor is a tapered end portion.

Through adopting above-mentioned technical scheme, the stability of being connected between other devices in the cone tip does benefit to promotion and the cabinet that charges.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) First shielding net and second shielding net can avoid the production of breakdown current, have improved insulating ability and shielding effect, reduce the cabinet that charges and probably produce the probability of accident because of point discharge for the operation of filling electric pile gets safer, steady.

(2) The edges of the first shielding net and the second shielding net are turned-edge fillets, the opening angle is 90 degrees, bubbles generated in the injection molding process of the insulating layer are reduced, and the insulating property is more stable.

Drawings

Fig. 1 is a schematic half-section structure view of a shielded bus for a dc charger in an embodiment of the present application;

fig. 2 is a schematic view of the overall structure of the first shielding net and the first grounding pole;

fig. 3 is a schematic view of the overall structure of the second shielding net and the second grounding pole.

Reference numerals are as follows: 1. a center conductor; 2. an insulating layer; 3. a mounting ring; 4. mounting a plate; 5. a first shielding mesh; 6. a second shielding mesh; 7. a first ground post; 8. a second ground post; 9. a ground plane.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a shielded bus for a direct current charger. Referring to fig. 1, the shield bus for the dc charging includes a central conductor 1, and the cross section of the central conductor 1 is circular and is a solid column. One end of the central conductor 1 is bent to 90 degrees and is connected with an electric module in the direct current charging pile. The other end of the central conductor 1 is connected to a cable connector.

The outside of the central conductor 1 is wrapped with an insulating layer 2, and the part of the insulating layer 2 positioned at the end part of the central conductor 1 is a tapered end part. The insulating layer 2 is injection molded from bisphenol a epoxy resin material. One end of the insulating layer 2 is provided with a mounting ring 3 formed by injection molding, the mounting ring 3 is annular and is provided with a screw hole for mounting, and the mounting ring 3 surrounds the central conductor 1. The other end of the insulating layer 2 is provided with a mounting plate 4 formed by injection molding, the mounting plate 4 is plate-shaped and is provided with a screw hole for mounting, and the mounting plate 4 is positioned on one side of the central conductor 1.

The insulating layer 2 is provided with a shielding ring net in a mould during injection molding, and the shielding ring net comprises a first shielding net 5 and a second shielding net 6. As shown in fig. 1 and 2, the first shielding mesh 5 is configured as a ring-shaped stainless steel mesh and surrounds one end of the central conductor 1, and the edge of the first shielding mesh 5 is a turned round angle, and the turned round angle is turned outwards to form an opening with an angle of 90 °. The position of the first shielding mesh 5 corresponds to the position of the mounting ring 3. The embedded first ground post 7 that is provided with of collar 3, first ground post 7 are the column and one end extends to the side of collar 3, the side of first ground post 7 perpendicular to first shielding net 5, first shielding net 5 just electrically conducts through riveting or welded fastening with first ground post 7.

As shown in fig. 1 and 3, the second shielding mesh 6 surrounds the other end of the center conductor 1. The second shielding net 6 is constructed in the same manner as the first shielding net 5. The embedded second ground post 8 that is provided with in mounting panel 4, second ground post 8 are the side that column and one end extend to mounting panel 4, and second ground post 8 perpendicular to second shielding net 6's side, second shielding net 6 just electrically conducts through riveting or welded fastening with second ground post 8.

Returning to fig. 1, the outside of the insulating layer 2 is covered with a grounding layer 9, the grounding layer 9 can be a sprayed zinc layer, and both ends of the grounding layer 9 can be sprayed with steel grit.

The implementation principle of the shielded bus for the direct current charger in the embodiment of the application is as follows: the opening can let the bubble in the turn-up fillet flow out at the in-process of moulding plastics, reduces the bubble quantity in insulating layer 2, and the taper tip can make things convenient for direct current charger to be connected with other electric module or cable with the shielded bus. The ground plane 9 can be electrically connected to the first shielding mesh 5 through the first ground stud 7, the ground plane 9 can be electrically connected to the second shielding mesh 6 through the second ground stud 8, and the shielding mesh network can play a role of shielding, thereby playing a role of suppressing partial discharge between the central conductor 1 and the port of the ground plane 9.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a direct current charger is with shielded bus which characterized in that: including central conductor (1), central conductor (1) cladding has insulating layer (2), the surface of insulating layer (2) is provided with ground plane (9), be provided with the shielding looped netowrk in insulating layer (2), central conductor (1) passes the shielding looped netowrk, the shielding looped netowrk is located ground plane (9) with between central conductor (1), the shielding looped netowrk extends to the port department of ground plane (9).

2. The shielding bus for the direct current charger according to claim 1, characterized in that: the edge of the shielding ring net is provided with a crimping fillet, and the crimping fillet is rolled along the direction far away from the central conductor (1).

3. The shielding bus for the direct current charger according to claim 2, characterized in that: and an opening is formed after the edge curling round corner is curled.

4. The shielding bus for the direct current charger according to claim 3, characterized in that: the angle of the opening is 90 deg..

5. The shielding bus for the direct current charger according to claim 1, characterized in that: and a grounding strut is electrically connected between the shielding ring network and the grounding layer (9).

6. The shielding bus for the direct current charger according to claim 5, characterized in that: the shielding looped network comprises a first shielding net (5) and a second shielding net (6), the first shielding net (5) is located at one port of the grounding layer (9), and the second shielding net (6) is located at the other port of the grounding layer (9).

7. The shielded bus bar for the direct-current charger according to claim 6, wherein: the grounding support column comprises a first grounding support column (7) and a second grounding support column (8), the first grounding support column (7) is fixedly connected between the first shielding net (5) and one port of the grounding layer (9), and the second grounding support column (8) is fixedly connected between the second shielding net (6) and the other port of the grounding layer (9).

8. The shielded bus bar for the direct-current charger according to claim 7, wherein: insulating layer (2) correspond to the position of first shielding net (5) is provided with collar (3), insulating layer (2) correspond to the position of second shielding net (6) is provided with mounting panel (4), first earthing rod (7) are located in collar (3), and in the side of collar (3) stretches out, second earthing rod (8) are located in mounting panel (4), and in stretch out on one side of mounting panel (4).

9. The shielding bus for the direct current charger according to claim 1, characterized in that: the part of the insulating layer (2) at the end part of the central conductor (1) is a tapered end part which is reduced.