CN220652974U - Lightning protection device and inverter - Google Patents

Abstract

The embodiment of the application provides a lightning protection device and an inverter. The lightning protection grounding structure comprises a box body and a connecting piece, wherein the box body comprises a grounding part, a plurality of wall parts and a containing cavity formed by encircling the wall parts, one wall part is provided with a via hole communicated with the containing cavity, and the grounding part is arranged on one side of the wall part away from the containing cavity; the connecting piece can dismantle with the box and be connected, and the connecting piece includes connecting portion and dismouting portion, and connecting portion are arranged in passing the via hole and inserting and hold the chamber, are connected with the electrical apparatus electricity that is located holding the chamber, and connecting portion and box electricity are connected, and dismouting portion is located the outside that the box deviates from holding the chamber, therefore, when lightning protection device need carry out withstand voltage test, can dismantle the connecting piece from the box in the outside of box through this dismouting portion, and need not to open the box to can improve the dismouting efficiency of connecting piece.

Description

Lightning protection device and inverter

Technical Field

The application belongs to the technical field of lightning protection, and particularly relates to a lightning protection device and an inverter.

Background

The lightning protection device is mainly arranged at a power inlet wire of electrical equipment which is easy to be struck by lightning, such as a distribution box, a distribution cabinet and a photovoltaic inverter, so as to protect the equipment from being damaged by lightning. At present, the lightning protection device can comprise a box body and a connecting piece, and the electric appliance and the ground wire inside the box body are connected through the connecting piece, so that the grounding is realized.

In general, in order to ensure safe and reliable operation of the lightning protection device, the lightning protection device needs to perform a voltage withstand test to detect whether the lightning protection device can withstand a predetermined voltage under normal working conditions, and when performing the voltage withstand test, the connecting piece needs to be removed to insulate the inside and the outside of the box body.

However, since the connecting piece in the existing lightning protection device is usually installed inside the box body, when the connecting piece needs to be disassembled, the cover plate of the box body needs to be opened first to remove the connecting piece, so that the disassembly and assembly efficiency is low.

Disclosure of Invention

The embodiment of the application provides a lightning protection device and dc-to-ac converter, can improve the dismouting efficiency of connecting piece.

On the one hand, the embodiment of the application provides a lightning protection device, which comprises a box body and a connecting piece, wherein the box body comprises a grounding part, a plurality of wall parts and a containing cavity formed by encircling the wall parts, one wall part is provided with a via hole communicated with the containing cavity, and the grounding part is arranged on one side of the wall part away from the containing cavity; the connecting piece is detachably connected with the box body, and the connecting piece comprises a connecting part and a dismounting part, wherein the connecting part is used for penetrating through the through hole and inserting into the accommodating cavity, is electrically connected with an electric device in the accommodating cavity, and is electrically connected with the box body, and the dismounting part is located outside the box body deviating from the accommodating cavity.

In some embodiments, the wall portion formed with the via hole includes a wall body and a conductive seat, the conductive seat is penetrating and disposed on the wall body along a thickness direction of the wall body, the via hole is formed on the conductive seat, the connection portion is electrically connected with the wall body through the conductive seat, and a length of the via hole along the thickness direction of the wall body is greater than a thickness of the wall body.

In some embodiments, the conductive seat includes a seat body and an end cover, the via hole is formed in the seat body, the end cover is disposed on a side of the seat body away from the accommodating cavity along a thickness direction of the wall portion, and encloses with the seat body to form a sealing cavity, and the dismounting portion is disposed in the sealing cavity.

In some embodiments, the end cap is threadably coupled to the seat body.

In some embodiments, the conductive mount further comprises a seal ring disposed circumferentially around the end cap and between the end cap and the mount body.

In some embodiments, the outer periphery of the conductive seat is formed with a step portion including a first step surface and a second step surface, the first step surface being held against a side of the wall body facing away from the accommodation chamber, the second step surface extending into the accommodation chamber.

In some embodiments, the lightning protection device further comprises an adapter disposed in the receiving cavity and insulated from the case, and the connection portion is electrically connected to the electrical device through the adapter.

In some embodiments, the lightning protection device further comprises an insulating support member sleeved around the outer periphery of the connection portion, the insulating support member being located between the wall portion and the adapter member.

In some embodiments, the adapter comprises an insulating plate, a wire and a nut, the wire is arranged on the insulating plate and is electrically connected with the nut, the insulating plate is provided with a second via hole along the thickness direction of the wall part, the nut is fixedly arranged on one side, away from the dismounting part, of the insulating plate along the thickness direction of the wall part, and the connecting part penetrates through the second via hole and is in threaded connection with the nut.

In some embodiments, the detachable portion abuts against the wall portion on a side of the wall portion, which is close to the accommodating chamber, in a thickness direction of the wall portion.

On the other hand, the embodiment of the application also provides an inverter, which comprises the lightning protection device of any one of the above.

The embodiment of the application provides a lightning protection device and an inverter. The lightning protection device comprises a box body and a connecting piece, wherein the box body comprises a grounding part, a plurality of wall parts and a containing cavity formed by encircling the wall parts, one wall part is provided with a via hole communicated with the containing cavity, and the grounding part is arranged on one side of the wall part away from the containing cavity; the connecting piece can be dismantled with the box and be connected, the connecting piece includes connecting portion and dismouting portion, the connecting portion passes the box and inserts and hold in the chamber, and be used for being connected with the power consumption device electricity that is arranged in holding the chamber, thereby can lead the box with the electric current of power consumption device, and realize the ground connection through the grounding part of box, and, because the dismouting portion of connecting piece is located the outside that the box deviates from and holds the chamber, therefore, when lightning protection device need carry out withstand voltage test, can dismantle the connecting piece from the box in the outside of box through this dismouting portion, and need not to open the box, thereby can improve the dismouting efficiency of connecting piece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described, and it is possible for a person skilled in the art to obtain other drawings according to these drawings without inventive effort.

FIG. 1 is a schematic diagram of the structure of a housing of a lightning protection device provided in some embodiments of the present application;

FIG. 2 is a cross-sectional view of a lightning protection device provided in some embodiments of the present application at a connector along the thickness of a wall;

FIG. 3 is an exploded view of a lightning protection device provided in some embodiments of the present application;

FIG. 4 is a schematic illustration of an assembly of a conductive mount and a connector provided in some embodiments of the present application;

fig. 5 is a schematic structural view of the lightning protection device according to some embodiments of the present application, with a wall portion of the housing removed.

Reference numerals illustrate:

a case 10; a wall portion 101; a wall body 1011; a conductive mount 1012; a seat body 1013; end cap 1014; seal cavity 1015; a step 1016; a first step surface 1017; a second step surface 1018; a housing chamber 102; a via 103; a connecting member 20; a connection portion 201; a detachable portion 202; an adapter 30; an insulating plate 301; a nut 302; insulating support 40.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to explain the present application and are not configured to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

In order to solve the problems in the prior art, the embodiment of the application provides a lightning protection device and an inverter.

Fig. 1 is a schematic structural diagram of a box body of a lightning protection device according to some embodiments of the present application, and fig. 2 is a cross-sectional view of the lightning protection device according to some embodiments of the present application at a connecting piece along a thickness direction of a wall portion.

As shown in fig. 1 and fig. 2, in one aspect, an embodiment of the present application provides a lightning protection device, including a box 10 and a connecting piece 20, where the box 10 includes a grounding portion, a plurality of wall portions 101, and a receiving cavity 102 formed by enclosing the wall portions 101, one wall portion 101 is provided with a via hole 103 communicating with the receiving cavity 102, and the grounding portion is disposed on a side of the wall portion 101 facing away from the receiving cavity 102; the connecting piece 20 is detachably connected with the box body 10, the connecting piece 20 comprises a connecting portion 201 and a dismounting portion 202, the connecting portion 201 is used for penetrating through the through hole 103 and being inserted into the accommodating cavity 102 and is electrically connected with an electric device located in the accommodating cavity 102, the connecting portion 201 is electrically connected with the box body 10, and the dismounting portion 202 is located on the outer side, deviating from the accommodating cavity 102, of the box body 10.

The case 10 has a housing chamber 102, and the housing chamber 102 can be used to house external electrical devices such as transformers, switching devices, and the like. The grounding part is arranged at one side of the wall part 101 away from the accommodating cavity 102, alternatively, the grounding part can be arranged at any one of a plurality of wall parts 101, and can be arranged at any position of the wall parts 101; alternatively, when the wall portion 101 includes a wall plate and a support leg, the ground portion may be provided on the support leg. Alternatively, the plurality of wall portions 101 of the case 10 may be made of a metal material, or the wall portion 101 of the case 10 in which the ground portion is provided, the wall portion 101 in which the via hole 103 is provided, and the wall portion 101 located therebetween may be made of a metal material, and the remaining wall portions 101 may be made of an insulating material. Alternatively, the grounding portion may be grounded by a ground wire, a ground steel pin, a ground post, and any other structure that may be grounded.

Specifically, the connection part 201 may be electrically connected to one wall part 101 of the case 10, the connection part 201 of the connection member 20 passes through the via hole 103 on one wall part 101 of the case 10 to be inserted into the receiving chamber 102 to be electrically connected to the electric device located in the receiving chamber 102, so that the electric device may discharge to the connection part 201 when the electric device is hit by lightning, and the current released by the electric device may be guided to the case 10 through the connection part 201 because the connection part 201 is electrically connected to the case 10, thereby realizing the grounding through the grounding part of the case 10. The connection member 20 is detachably connected with the case 10, alternatively, the connection member 20 may be detachably connected with the case 10 through plugging, clamping, threaded connection, hinge connection or other connection structures. It will be appreciated that, in the connector 20, any one of the detachable portion 202 and the connection portion 201 may be detachably connected to the case 10, and when the connection portion 201 is detachably connected to the case 10, the connection between the connection portion 201 and the case 10 may be released by operating the detachable portion 202, and the connection portion 201 may be detached from the case 10.

In the lightning protection device provided in the embodiment of the application, the dismounting portion 202 of the connecting piece 20 is arranged on the outer side of the box body 10 deviating from the accommodating cavity 102, so that the connecting portion 201 can be dismounted from the outer side of the box body 10 through the dismounting portion 202 without opening the box body 10, and the dismounting efficiency of the connecting piece 20 can be improved.

In addition, in the present embodiment, the dismounting portion 202 is operated to dismount the connection portion 201 on the outer side of the case 10 facing away from the accommodating chamber 102, so that the operation space when the connection portion 201 is dismounted can be increased, and the operation is facilitated, compared to the case where the cover of the case 10 is opened and the ground connection portion 201 is dismounted inside the case 10.

Alternatively, the cross-sectional shape of the via 103 may be flexibly selected according to practical situations, for example, the cross-sectional shape of the via 103 may be circular, or the cross-sectional shape of the via 103 may be square, or of course, the cross-sectional shape of the via 103 may be other shapes or some irregular shape, which is not limited in particular.

Alternatively, the connection member 20 may be a conductive body such as a screw or a threaded rod, or the connection member 20 may be another rod-shaped conductive body, which is not particularly limited in this embodiment.

With continued reference to fig. 1 and 2, in some embodiments, the wall portion 101 with the via hole 103 formed therein includes a wall body 1011 and a conductive base 1012, the conductive base 1012 is disposed on the wall body 1011 in a penetrating manner along a thickness direction of the wall body 1011, the via hole 103 is formed on the conductive base 1012, the connection portion 201 is electrically connected to the wall body 1011 through the conductive base 1012, and a length of the via hole 103 along the thickness direction of the wall body 1011 is greater than a thickness of the wall body 1011.

The length of the via hole 103 in the thickness direction of the wall portion 101 is greater than the thickness of the wall portion 101, and the via hole 103 is formed on the conductive base 1012, and therefore, at least one side of the conductive base 1012 in the thickness direction of the wall body 1011 may protrude with respect to the wall body 1011.

Since the connection portion 201 of the connection member 20 is inserted into the accommodation chamber 102 from the via hole 103, the connection portion 201 can be electrically connected to the case 10 in the process of passing through the via hole 103, and therefore, in this embodiment, by providing that the wall portion 101 formed with the via hole 103 includes the wall body 1011 and the conductive seat 1012, the via hole 103 is formed on the conductive seat 1012, and providing that the length of the via hole 103 in the thickness direction of the wall body 1011 is greater than the thickness of the wall body 1011, the contact area between the connection portion 201 and the inner wall of the via hole 103 can be increased, and the stability of the electrical connection between the connection portion 201 and the case 10 and the structural stability of the connection portion 201 can be improved.

Further, the via 103 may include a first hole section and a second hole section, where a dimension of the first hole section along at least one of a length direction and a width direction of the wall body 1011 is greater than a dimension of the second hole section in a corresponding direction, the first hole section is located at a side of the second hole section away from the accommodating cavity 102 along a thickness direction of the wall body 1011, the ground connection portion 201 may pass through the second hole section and be inserted into the accommodating cavity 102, and the dismounting portion 202 of the connection member 20 may be located in the first hole section and abut against an end portion of the first hole section of the second hole Duan Kaojin, so that the dismounting portion 202 of the connection member 20 may be protected to some extent by the first hole section. The dimension of the first hole section in at least one of the length direction and the width direction of the wall body 1011 is larger than the dimension of the second hole section in the corresponding direction, that is, the dimension of the first hole section in the length direction of the wall body 1011 may be larger than the dimension of the second hole section in the length direction of the wall portion 101; alternatively, the dimension of the first hole section in the width direction of the wall body 1011 is larger than the dimension of the second hole section in the width direction of the wall body 1011; alternatively, the dimension of the first hole section in the length direction of the wall portion 101 is larger than the dimension of the second hole section in the length direction of the wall portion 101, and at the same time, the dimension of the first hole section in the width direction of the wall body 1011 is larger than the dimension of the second hole section in the width direction of the wall body 1011.

Alternatively, the conductive base 1012 may be connected to the wall body 1011 by a welding process, and in particular, the conductive base 1012 may be welded to the wall body 1011 circumferentially along the circumference of the via hole 103, thereby improving the conductive effect between the conductive base 1012 and the wall body 1011 and the sealing performance of the lightning protection device.

Fig. 3 is an exploded view of a lightning protection device provided in some embodiments of the present application.

As shown in fig. 3, in some embodiments, the conductive seat 1012 includes a seat body 1013 and an end cap 1014, the via 103 is formed in the seat body 1013, the end cap 1014 is covered on a side of the seat body 1013 away from the accommodating cavity 102 along a thickness direction of the wall portion 101, and forms a seal cavity 1015 with the seat body 1013, and the detachable portion 202 is located in the seal cavity 1015.

Alternatively, the end cap 1014 may include a cap plate and a side plate circumferentially disposed around the cap plate, the side plate being located on a side of the cap plate adjacent to the seat body 1013 in a thickness direction of the wall portion 101, an end of the side plate adjacent to the accommodation chamber 102 in the thickness direction of the wall portion 101 may be connected to an end of the seat body 1013 distant from the accommodation chamber 102 in the thickness direction of the wall portion 101, or the side plate may be circumferentially disposed around an outer peripheral side of the seat body 1013 in a circumferential direction of the via hole 103 so as to form a seal chamber 1015 with the seat body 1013; it will be appreciated that when the via 103 comprises a first hole section and a second hole section, and the attachment and detachment portion 202 of the connector 20 is located in the first hole section and abuts against the end of the first hole section of the second hole Duan Kaojin, the side plate of the end cap 1014 can be inserted into the first hole section of the via 103 and abut against the inner wall of the first hole section, thereby forming a sealed cavity 1015 at the first hole section; of course, when the via 103 includes a first hole section and a second hole section, and the attaching and detaching portion 202 of the connector 20 is located in the first hole section and abuts against the end of the first hole section of the second hole Duan Kaojin, the cap 1014 may also include only a cover plate directly attached to the end of the seat body 1013 away from the accommodation chamber 102 in the thickness direction of the wall 101 on the side close to the accommodation chamber 102 in the thickness direction of the wall 101 to form the seal chamber 1015 at the first hole section. The specific structure of the end cap 1014 and the connection manner with the seat body 1013 are not particularly limited, and the end cap 1014 and the seat body 1013 may be enclosed to form the sealing cavity 1015 for accommodating the detachable portion 202 of the cavity 102.

In the present embodiment, by providing the conductive holder 1012 including the holder body 1013 and the end cap 1014, the end cap 1014 is provided to cover a side of the holder body 1013 away from the accommodation chamber 102 in the thickness direction of the wall portion 101 to enclose the holder body 1013 to form the seal chamber 1015, and by providing the detachable portion 202 of the connection member 20 in the seal chamber 1015, the connection member 20 can be protected and the sealing performance of the lightning protection device can be improved.

In some embodiments, the cap 1014 is threadably coupled to the housing body 1013, which may improve the strength of the coupling of the cap 1014 to the housing body 1013, further improving the sealing performance of the lightning protection device.

Alternatively, the side plate of the cap 1014 may be circumferentially disposed around the outer peripheral side of the seat body 1013 in the circumferential direction of the via 103, at which time an internal thread may be formed on the side plate and an external thread may be formed on the outer peripheral side of the seat body 1013, so that the threaded connection of the cap 1014 and the seat body 1013 is achieved by engagement of the internal and external threads.

Alternatively, when the side plate is inserted into the first bore section of the via 103, the side plate may be externally threaded and the inner wall of the first bore section may be internally threaded, thereby effecting threaded connection of the end cap 1014 with the seat body 1013 via engagement of the internal and external threads.

In some embodiments, conductive seat 1012 further includes a seal ring disposed circumferentially around end cap 1014 and between end cap 1014 and seat body 1013, thereby improving the sealing performance of seal cavity 1015.

It will be appreciated that when the cap 1014 and the housing body 1013 are threadably coupled, the seal ring may be disposed between the side plate and the housing body 1013, or may be disposed between a side of the cover plate adjacent to the receiving chamber 102 in the thickness direction of the wall portion 101 and an end of the housing body 1013 remote from the receiving chamber 102 in the thickness direction of the wall portion 101. Optionally, the material of the seal ring includes, but is not limited to, silica gel, rubber, polyethylene, resin, polyurethane, polytetrafluoroethylene, polyetheretherketone, and the like.

Fig. 4 is a schematic diagram illustrating an assembly of a conductive socket and a connector according to some embodiments of the present application.

As shown in fig. 4, in some embodiments, the outer periphery of the conductive base 1012 is formed with a step 1016, the step 1016 includes a first step surface 1017 and a second step surface 1018, the first step surface 1017 abuts against a side of the wall body 1011 facing away from the accommodating cavity 102, and the second step surface 1018 extends into the accommodating cavity 102.

The first step surface 1017 and the second step surface 1018 may be disposed to intersect, and preferably, the first step surface 1017 and the second step surface 1018 may be perpendicular to each other. The first step surface 1017 abuts against one side of the wall body 1011 away from the accommodating cavity 102, that is, the first step surface 1017 is attached to the wall surface of one side of the wall body 1011 away from the accommodating cavity 102, on one hand, accidental falling of the seat body 1013 into the accommodating cavity 102 can be prevented, on the other hand, the contact area between the conductive seat 1012 and the wall body 1011 can be increased, and the sealing performance and the conductive stability between the conductive seat and the wall body can be improved.

Fig. 5 is a schematic structural view of the lightning protection device according to some embodiments of the present application, with a wall portion of the housing removed.

As shown in fig. 5, in some embodiments, the lightning protection device further includes an adapter 30, where the adapter 30 is disposed in the accommodating cavity 102 and insulated from the case 10, and the connection portion 201 is used to electrically connect with the electrical device through the adapter 30.

The adapter 30 is used to connect the electric device and the connection portion 201 of the connector 20 and reduce the current output from the electric device. It will be appreciated that when an electrical device is struck by lightning, it discharges a relatively large current, and therefore, if this relatively large current is directly grounded, a safety accident may be initiated. In view of this, in the present embodiment, the connection portion 201 and the electric device are connected through the adapter 30, and the current output from the electric device is reduced through the adapter 30, thereby improving the safety performance of the lightning protection device.

Alternatively, the adaptor 30 may be a PCB (Printed Circuit Board ), or the adaptor 30 may be another type of electrical component such as a current limiter, which only needs to reduce the current output by the electrical device.

With continued reference to fig. 4 and 5, in some embodiments, the lightning protection device further includes an insulating support member 40, where the insulating support member 40 is sleeved on the outer periphery of the connection portion 201, and the insulating support member 40 is located between the wall portion 101 and the adapter 30.

The insulating support 40 may be made of a material having a certain elastic cushioning effect. The insulating support 40 serves to buffer and support the connection portion 201 and the adapter 30 during the connection process, so as to prevent the adapter 30 from being deformed or even broken by the pressure from the connection portion 201.

Optionally, when the via 103 includes a first hole section and a second hole section, and the dismounting portion 202 abuts against an end portion of the first hole section of the second hole Duan Kaojin, the second hole section may further include a first sub-hole section and a second sub-hole section, the second sub-hole section is located on a side of the first sub-hole section, which is close to the accommodating cavity 102 along a thickness direction of the wall portion 101, and one end of the insulating support 40, which is close to the wall portion 101 along the thickness direction of the wall portion 101, may be inserted into the second sub-hole section and abut against an end portion of the first sub-hole section, which is close to the accommodating cavity 102 along the thickness direction of the wall portion 101, so as to improve stability of the insulating support 40. It should be clear that the length dimension of the second sub Kong Duanyan wall body 1011 is greater than the length dimension of the first sub-aperture section along the length dimension of the wall body 1011 and/or the width dimension of the second sub Kong Duanyan wall body 1011 is greater than the width dimension of the first sub-aperture section along the width dimension of the wall body 1011 so that the insulating support 40 can be inserted into the second sub-aperture section.

As shown in fig. 5, in some embodiments, the adaptor 30 includes an insulating plate 301, a wire and a nut 302, the wire is disposed on the insulating plate 301 and is electrically connected with the nut 302, the insulating plate 301 is provided with a second via hole 103 along the thickness direction of the wall portion 101, the nut 302 is fixedly disposed on a side of the insulating plate 301 away from the dismounting portion 202 along the thickness direction of the wall portion 101, and the connection portion 201 passes through the second via hole 103 and is in threaded connection with the nut 302.

The insulating plate 301 may be made of a series of insulating materials such as silica gel, rubber, etc. The insulating plate 301 is provided with the second via hole 103 along the thickness direction of the wall portion 101, the nut 302 is fixedly arranged on one side of the insulating plate 301 away from the dismounting portion 202 along the thickness direction of the wall portion 101, and the through hole of the nut 302 can be aligned with the second via hole 103, so that the connecting portion 201 can pass through the second via hole 103 and be in threaded connection with the nut 302, and stability of the connecting portion 201 is improved. Meanwhile, since the wire can achieve the electrical connection of the electric device with the nut 302, when the connection part 201 is screw-connected with the nut 302, it can simultaneously achieve the electrical connection with the nut 302, so that the current of the electric device can be guided to the case 10. It will be appreciated that when the connection portion 201 is screwed with the nut 302 to achieve current conduction, other portions of the nut 302 than the portion provided with the screw thread may be coated with an insulating layer to avoid current interference between the nut 302 and other devices in the receiving chamber 102.

Alternatively, the insulating plate 301 may be fixedly connected to the case 10 through a connection structure such as a screw, so as to avoid the position of the insulating plate 301 from moving.

Optionally, the position of the second via hole 103 on the insulating board 301 may be flexibly selected in practical applications, so that the layout of the wires on the insulating board 301 may be more flexible, for example, the second via hole 103 may be formed in the middle of the insulating board 301.

In some embodiments, the detachable portion 202 abuts against the wall portion 101 on a side of the wall portion 101 in the thickness direction thereof, which is close to the accommodating chamber 102.

Specifically, the detachable portion 202 may abut against an outer side of the wall portion 101 facing away from the accommodating chamber 102 on a side of the wall portion 101 in the thickness direction thereof, which is close to the accommodating chamber 102. When the wall portion 101 formed with the via hole 103 includes the wall body 1011 and the conductive seat 1012, a side of the attaching/detaching portion 202 close to the accommodating chamber 102 in the thickness direction of the wall portion 101 may abut against a side of the conductive seat 1012 away from the accommodating chamber 102 in the thickness direction of the wall portion 101. When the via 103 includes a first hole section and a second hole section, the detachable portion 202 may abut against one side of the first hole section of the second hole Duan Kaojin.

In this embodiment, the connection portion 201 is screwed with the nut 302 of the adaptor 30, and the detachable portion 202 is disposed to abut against the wall portion 101 on a side of the wall portion 101, which is close to the accommodating cavity 102 in the thickness direction of the wall portion 101, so that the connection portion 201 and the insulating plate 301 can be further limited in the thickness direction of the wall portion 101, and the two can be prevented from being moved in the thickness direction of the wall portion 101.

Further, when the detachable portion 202 abuts against the wall portion 101 along the thickness direction of the wall portion 101, the connecting member 20 may further include a spring pad disposed between the detachable portion 202 and the wall portion 101, so as to play a role in damping and buffering, and prevent the connecting member 20 from loosening.

Further, the connecting piece 20 may further include a flat pad, where the flat pad and the elastic pad are stacked, and the flat pad is located between the dismounting portion 202 and the wall portion 101, so that the dismounting portion 202 can be supported, the pressure applied to the dismounting portion 202 can be uniformly distributed, and the service life of the connecting piece 20 is prolonged.

On the other hand, the embodiment of the application also provides an inverter, which comprises the lightning protection device of any one of the above.

Optionally, the inverter further includes an inverter body disposed in the accommodation chamber and insulated from the case 10, and a ground terminal of the inverter body is electrically connected with the connection part 201 of the lightning protection device to output current to the connection part 201 when struck by lightning.

The embodiment of the application provides a lightning protection device and an inverter. The lightning protection device comprises a box body 10 and a connecting piece 20, wherein the box body 10 comprises a grounding part, a plurality of wall parts 101 and a containing cavity 102 formed by enclosing the wall parts 101, one wall part 101 is provided with a through hole 103 communicated with the containing cavity 102, and the grounding part is arranged on one side of the wall part 101 away from the containing cavity 102; the connecting piece 20 is detachably connected with the case 10, the connecting piece 20 includes a connecting portion 201 and a dismounting portion 202, the connecting portion 201 penetrates through the case 10 and is inserted into the accommodating cavity 102 and is used for being electrically connected with an electric device located in the accommodating cavity 102, so that the electric device can be led to the case 10 to achieve grounding through the grounding portion of the case 10, and since the dismounting portion 202 of the connecting piece 20 is located on the outer side of the case 10 away from the accommodating cavity 102, when the lightning protection device needs to perform a voltage withstand test, the connecting piece 20 can be dismounted from the case 10 through the dismounting portion 202 from the outer side of the case 10 without opening the case 10, so that the dismounting efficiency of the connecting piece 20 can be improved.

In the foregoing, only the specific embodiments of the present application are described, and it will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, which are not repeated herein. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, which are intended to be included in the scope of the present application.

Claims (11)

1. A lightning protection device, comprising:

the box body comprises a grounding part, a plurality of wall parts and a containing cavity formed by encircling the wall parts, wherein one wall part is provided with a via hole communicated with the containing cavity, and the grounding part is arranged at one side of the wall part, which is away from the containing cavity;

the connecting piece, with the box can dismantle the connection, the connecting piece includes connecting portion and dismouting portion, connecting portion is used for passing the via hole and inserts hold in the chamber, and with be located hold the electrical apparatus electricity in the chamber and be connected, just connecting portion with the box electricity is connected, the dismouting portion is located the box deviates from hold the outside in chamber.

2. The lightning protection device according to claim 1, wherein the wall portion in which the via hole is formed includes a wall body and a conductive seat penetrating through the wall body in a thickness direction of the wall body, the via hole is formed on the conductive seat, the connection portion is electrically connected to the wall body through the conductive seat, and a length of the via hole in the thickness direction of the wall body is larger than a thickness of the wall body.

3. The lightning protection device according to claim 2, wherein the conductive seat comprises a seat body and an end cover, the via hole is formed in the seat body, the end cover is provided on a side of the seat body away from the accommodating cavity in a thickness direction of the wall portion, the end cover and the seat body enclose a sealing cavity, and the dismounting portion is located in the sealing cavity.

4. The lightning protection device according to claim 3 wherein the end cap is threadably connected to the base body.

5. The lightning protection device according to claim 3 wherein the conductive mount further comprises a seal ring circumferentially disposed about the end cap and positioned between the end cap and the mount body.

6. The lightning protection device according to claim 2, wherein a stepped portion is formed on the outer periphery of the conductive base, the stepped portion includes a first stepped surface and a second stepped surface, the first stepped surface abuts against a side of the wall body facing away from the accommodating cavity, and the second stepped surface extends into the accommodating cavity.

7. The lightning protection device according to any one of claims 1 to 6 further comprising an adapter disposed in the housing and insulated from the case, the connection portion being for electrical connection with the electrical device through the adapter.

8. The lightning protection device of claim 7, further comprising an insulating support member disposed around the periphery of the connection portion, the insulating support member being disposed between the wall portion and the adapter member.

9. The lightning protection device according to claim 7, wherein the adapter comprises an insulating plate, a wire and a nut, the wire is disposed on the insulating plate and electrically connected with the nut, the insulating plate is provided with a second via hole along a thickness direction of the wall portion, the nut is fixedly disposed on a side of the insulating plate away from the dismounting portion along the thickness direction of the wall portion, and the connecting portion passes through the second via hole and is in threaded connection with the nut.

10. The lightning protection device according to claim 9, wherein the detachable portion abuts against the wall portion on a side of the wall portion in a thickness direction thereof, the side being closer to the accommodation chamber.

11. An inverter comprising a lightning protection device according to any one of claims 1 to 10.