CN215300191U

CN215300191U - Gas discharge tube grounding structure and charging pile

Info

Publication number: CN215300191U
Application number: CN202120725536.5U
Authority: CN
Inventors: 冯颖盈; 姚顺; 徐金柱; 罗耀文; 王虎
Original assignee: Shenzhen Vmax Power Co Ltd
Current assignee: Shenzhen Vmax Power Co Ltd; Shenzhen VMAX New Energy Co Ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-12-24
Anticipated expiration: 2031-04-09

Abstract

The utility model discloses a gas discharge tube ground structure, fill electric pile, this gas discharge tube ground structure, including installation end and earthing terminal, still include: the connecting assembly comprises a conductive piece and an insulating piece which are fixedly connected, wherein one of the conductive piece and the insulating piece is fixedly connected with the mounting end, and the other one of the conductive piece and the insulating piece is fixedly connected with the grounding end; and the switching component is arranged on the mounting end or the grounding end and is connected with or separated from the conductive piece so as to switch the gas discharge tube to be connected with or disconnected from the grounding end. Electrically conductive piece is comparatively stable with mounting end fixed connection, and insulating part and ground connection end fixed connection are also comparatively stable, and insulating part and electrically conductive also be fixed connection moreover between, only switching components can be movable, so overall structure connects firmly, compact structure, easily installation and convenient maintenance ann tear open, the reliability is high, can be suitable for different application environment.

Description

Gas discharge tube grounding structure and charging pile

Technical Field

The utility model relates to a new forms of energy technical field that charges especially relates to gas discharge tube ground structure, fills electric pile.

Background

Along with the requirements of energy conservation and emission reduction and air pollution control, new energy vehicles are gradually commercialized in the market, electric vehicles are more the mastery force of the new energy vehicles, the charging pile is particularly important for solving the problem of charging of the electric vehicles, the charging power supply conversion module is an important component of the charging pile, and the gas discharge tube is an important device for protecting the charging power supply conversion module, so that the use of the gas discharge tube is very important.

Gas discharge tubes have traditionally been gap-type lightning protection components that have found wide use in lightning protection for communication systems. The discharge tube is commonly used for the first stage or the first two stages in the multi-stage protection circuit, plays the functions of releasing lightning instantaneous overcurrent and limiting overvoltage, and has definite advantages in lightning protection of a high-frequency signal circuit due to the fact that the inter-electrode insulation resistance of the discharge tube is large and the parasitic capacitance is small, so that the discharge tube can be applied to a charging pile to achieve a good protection effect.

Chinese patent document No. CN211830201U discloses a structure of a junction box for preventing surge in a truck scale, in which an output end of a gas discharge tube and an output end of a rectifier stack are grounded through PE, but a specific structure of grounding is not explicitly given. According to understanding, gas discharge tube's ground structure is many as shown in figure 1 on the market now, with gas discharge tube 1 welding on PCB board 2, because need be insulating between PCB board 2 and the casing 3 when charging source conversion module carries out withstand voltage test, consequently placed insulating gasket 5 between PCB board 2 and the casing 3 and played insulating effect, rethread precession earth bolt 4 passes this insulating gasket 5 and realizes switching on between PCB board 2 and the casing 3 when needs switch on ground connection, thereby realize ground connection.

Whether switch on between PCB board 2 and the casing 3 is changed only through the precession back-out of ground bolt 4 in the above-mentioned scheme, and insulating gasket 5 stability is relatively poor in this in-process, drops easily even, and structural stability is not high.

SUMMERY OF THE UTILITY MODEL

In order to solve the not high defect of gas discharge tube ground structure stability among the prior art, the utility model provides a gas discharge tube ground structure, fill electric pile.

The technical scheme of the utility model be, gas discharge tube ground structure, including fixed mounting gas discharge tube's installation end and with gas discharge tube switches on the earthing terminal of ground connection, still include:

the connecting assembly comprises a conductive piece and an insulating piece which are fixedly connected, wherein one of the conductive piece and the insulating piece is fixedly connected with the mounting end, and the other one of the conductive piece and the insulating piece is fixedly connected with the grounding end;

and the switching component is arranged on the mounting end or the grounding end and is connected with or separated from the conductive piece so as to switch the gas discharge tube to be connected with or disconnected from the grounding end.

Preferably, the switching assembly includes a ground bolt screwed to the mounting end or the ground end, and the ground bolt is screwed into or out of the mounting end or the ground end to connect or disconnect with the conductive member.

Preferably, the conductive piece is fixedly connected with the mounting end, the insulating piece is fixedly connected with the grounding end, and the switching assembly is arranged on the grounding end.

Preferably, the mounting end is a PCB, the gas discharge tube is welded to the PCB, and the conductive piece is a conductive copper bar welded to the PCB.

Preferably, the grounding end is a casing, the insulating part is provided with a positioning column which is fixedly inserted in the casing, and the insulating part is positioned between the conductive part and the grounding end.

Preferably, the insulating part is provided with a through hole, the grounding end is provided with a mounting hole, and the switching assembly sequentially penetrates through the mounting hole and the through hole and then collides with the conductive piece to conduct the gas discharge tube and the grounding end.

Preferably, the insulating part is made of plastic materials, and the insulating part and the conductive copper bar are integrally formed in an injection molding mode.

Charging pile, it includes gas discharge tube ground structure as aforementioned.

Compared with the prior art, the utility model discloses well electrically conductive piece is comparatively stable with installation end fixed connection, and insulating part and ground connection end fixed connection are also comparatively stable, and insulating part and electrically conductive also be fixed connection between, only switching module can be movable, so overall structure connects firmly, compact structure, easily installation and convenient maintenance ann tear open, and the reliability is high, can be suitable for different application environment.

Drawings

The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a prior art grounding arrangement for a gas discharge tube;

FIG. 2 is a schematic view of the overall structure of the present embodiment;

FIG. 3 is a front view of the present embodiment;

fig. 4 is an exploded view of the present embodiment.

1. A gas discharge tube; 2. a PCB board; 3. a housing; 31. mounting holes; 4. a ground bolt; 5. an insulating spacer; 6. a conductive copper bar; 61. a pin; 62. a positioning column; 7. an insulating member; 71. and a through hole.

Detailed Description

Gas discharge tube ground structure mainly used new energy automobile fills electric pile, as shown in fig. 1, generally weld gas discharge tube 1 on PCB board 2 on the existing market, because need be insulating between PCB board 2 and the casing 3 when charging source conversion module carries out withstand voltage test, consequently placed insulating gasket 5 between PCB board 2 and the casing 3 and played insulating effect, rethread precession earth bolt 4 passes this insulating gasket 5 and realizes switching on between PCB board 2 and the casing 3 when needs switch on ground, thereby realize ground connection.

Whether switch on between PCB board 2 and the casing 3 is changed only through the precession back-and-forth motion of earth bolt 4 in the above-mentioned scheme, and insulating gasket 5 stability is relatively poor in this in-process, drops easily even, and structural stability is not high, and the impedance between gas discharge tube and the casing is great moreover, therefore this embodiment proposes a gas discharge tube ground structure, including the fixed mounting the installation end of gas discharge tube and with the earthing terminal that the gas discharge tube switches on ground, still include:

The switching assembly is connected to the grounding bolt on the mounting end or the grounding end in a threaded manner, and the grounding bolt is screwed in and out of the mounting end or the grounding end so as to be connected with or separated from the conductive piece.

In one embodiment, the conductive member is fixedly connected to the mounting end, the insulating member 7 is fixedly connected to the ground end, and the switching element is disposed on the ground end. Specifically, the installation end is PCB board 2, gas discharge tube 1 weld in on the PCB board 2, electrically conductive copper bar 6 for with PCB board 2 welded electrically conductive, the earthing terminal is the casing 3 of PE material, be equipped with on the insulating part 7 and peg graft and be fixed in reference column 62 in the casing 3 also is equipped with in the casing 3 with this reference column 62 complex recess (not shown in the figure), just insulating part 7 is located between electrically conductive and the earthing terminal to play the effect of normal isolated PCB board 2 and casing 3.

In order to improve the connection stability between the conductive copper bar 6 and the insulator 7, the insulator 7 is made of plastic, and the insulator 7 is formed by injection molding the conductive copper bar 6 integrally. Meanwhile, the insulating member 7 is provided with a through hole 71, the grounding end is provided with a mounting hole 31, and the switching assembly sequentially penetrates through the mounting hole 31 and the through hole 71 and then collides with the conductive member to conduct the gas discharge tube 1 and the grounding end.

During the installation, weld gas discharge tube 1 on PCB board 2 earlier, simultaneously with integrative injection moulding's conductive copper bar 6 and insulating part 7 through reference column 62 grafting be fixed in inside casing 3, mounting hole 31 is just right with through-hole 71 this moment, pin 61 and PCB board 2 welded fastening with conductive copper bar 6 upper end again, at last with earthing bolt 4 threaded connection in mounting hole 31, and through earthing bolt 4 precession screw-out realization in mounting hole 31 with conductive copper bar 6's butt or break away from, and then switch insulating or switch on between gas discharge tube 1 and the casing 3.

Because electrically conductive piece and mounting end fixed connection are comparatively stable, insulating part 7 is also comparatively stable with ground connection end fixed connection, and also be fixed connection between insulating part 7 and the electrically conductive piece moreover, only the switching component can be moved about, so overall structure connects firmly, compact structure, easily installation and convenient maintenance ann tear open, the reliability is high, can be suitable for in the application environment of difference, the impedance is less between gas discharge tube and the casing moreover.

The embodiment of the invention also discloses a charging pile for charging a new energy automobile, which comprises the grounding structure of the gas discharge tube.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Gas discharge tube ground structure, including fixed mounting gas discharge tube's installation end and with gas discharge tube switches on the earthing's earthing terminal, its characterized in that still includes:

2. The gas discharge tube grounding structure of claim 1, wherein the switching assembly comprises a grounding bolt screwed to the mounting or grounding end, the grounding bolt being screwed in and out of the mounting or grounding end to connect or disconnect the grounding bolt to or from a conductive member.

3. The gas discharge tube grounding structure of claim 1, wherein the conductive member is fixedly connected to the mounting end, the insulating member is fixedly connected to the grounding end, and the switching member is disposed on the grounding end.

4. The gas discharge tube grounding structure of claim 3, wherein the mounting end is a PCB board, the gas discharge tube is soldered on the PCB board, and the conductive member is a conductive copper bar soldered on the PCB board.

5. The grounding structure of claim 3, wherein the grounding terminal is a housing, the insulating member has a positioning post inserted and fixed in the housing, and the insulating member is located between the conductive member and the grounding terminal.

6. The grounding structure of claim 5, wherein the insulating member has a through hole, the grounding terminal has a mounting hole, and the switching member sequentially passes through the mounting hole and the through hole and then collides with the conductive member to conduct the gas discharge tube to the grounding terminal.

7. The grounding structure of claim 4, wherein the insulator is made of plastic, and the insulator and the copper bar are integrally injection-molded.

8. Charging pole, characterized in that it comprises a gas discharge tube grounding structure according to any of claims 1 to 7.