Relay assembly and power distribution equipment

Abstract

The utility model provides a relay assembly and power distribution equipment, and the relay assembly comprises a relay which is disposed in an accommodation cavity and is provided with a first conductive sheet and a second conductive sheet, and the first conductive sheet and the second conductive sheet are located at one surface, facing a window, of the relay; the cover body is fixed on the first conducting strip and / or the second conducting strip; the cover body is exposed out of the containing cavity through the window. When the relay is fixed in the insulation box, the cover body can be exposed out of the insulation box from the window. When the relay needs to be pulled out, a worker can directly apply a force to the cover body to pull out the relay, thereby reducing the constraint of a narrow space to the plugging operation, enabling the force to be applied to the relay more easily, enabling the operation to be simpler, and improving the disassembly and assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of relays, and in particular to a relay assembly and a power distribution device. BACKGROUND

[0002] At present, power systems such as photovoltaic energy storage systems are configured with power distribution devices to realize power control, protection, conversion and distribution. In the related art, the power distribution device usually includes a box body, a copper bar and a relay. The copper bar is fixed in the box body, and the copper bar corresponds to a power distribution branch of the power distribution device. The relay is detachably fixed in the box body, and the power connection terminals of the relay are fixed and electrically connected to the copper bar by screws. With the increase of working time, some relays may need to be repaired and replaced. At this time, the worker needs to unscrew the screws on the power connection terminals of the relay, and pull out the relay from the box body. Then, the worker inserts the replaced relay into the box body and re-installs the screws.

[0003] However, due to the large number of electronic devices inside the box body and the narrow space, the relay is easily tightly matched with the structure inside the box body, which makes it difficult for the worker to pull out the relay, and the operation is difficult, which is not conducive to the later maintenance of the device. CONTENT OF THE UTILITY MODEL

[0004] In view of the above, it is necessary to provide a relay assembly and a power distribution device to solve the above technical problems.

[0005] The first aspect of the present application provides a relay assembly for an insulating box of a power distribution device. The insulating box is provided with a receiving cavity. One side of the insulating box is provided with a window. The relay assembly comprises: a relay arranged in the receiving cavity. The relay has a first conductive sheet and a second conductive sheet. The first conductive sheet and the second conductive sheet are located on the side of the relay facing the window. A cover is fixed to the first conductive sheet and / or the second conductive sheet. The cover is exposed to the receiving cavity through the window.

[0006] In some embodiments, the cover comprises: a fixed block fixedly connected to the first conductive sheet and / or the second conductive sheet; a first cover block connected to the fixed block, the first cover block covering the first conductive sheet; and a second cover block connected to the fixed block, the second cover block covering the second conductive sheet.

[0007] In some embodiments, the first conductive sheet is provided with a first through hole for a first through-flow screw to pass through, the first through-flow screw being used to fix and electrically connect the first conductive sheet; the second conductive sheet is provided with a second through hole for a second through-flow screw to pass through, the second through-flow screw being used to fix and electrically connect the second conductive sheet; the first cover block is provided with a first communication hole aligned with the first through hole, the first communication hole being used to accommodate the first through-flow screw; and the second cover block is provided with a second communication hole aligned with the second through hole, the second communication hole being used to accommodate the second through-flow screw.

[0008] In some embodiments, the cover further comprises a fixing member, the fixing block is provided with a fixing hole, and the fixing member passes through the fixing hole and is connected to the first conductive sheet and / or the second conductive sheet.

[0009] In some embodiments, the fixing member is a fixing screw, and the first conductive sheet and / or the second conductive sheet is provided with a mounting hole for the fixing screw to connect.

[0010] In some embodiments, the cover further comprises a positioning column connected to the fixing block, the positioning column being used to mate with the insertion hole of the first conductive sheet and / or the second conductive sheet.

[0011] In some embodiments, the cover further comprises a handle block connected to the fixing block away from the first conductive sheet.

[0012] In some embodiments, the handle block is arranged to extend in a first direction, the handle block is provided with a buckle position, and the buckle position has a first spacing with the fixing block in the first direction to form a buckle space; wherein the first direction corresponds to the pulling-out direction of the relay when disassembling.

[0013] In some embodiments, the first cover block and the buckle position have a second spacing in the first direction to form a giving space; the giving space is used for other objects to enter between the first cover block and the buckle position and apply force to the buckle position in a second direction.

[0014] The second aspect of the present application provides a power distribution device, comprising a box body, an insulating box and a relay assembly, wherein the insulating box is arranged in the box body, the insulating box is provided with a receiving cavity, the insulating box is provided with a box cover, the box cover covers the cavity opening of the receiving cavity, and the box cover is provided with a window; the relay assembly comprises: a relay arranged in the receiving cavity, the relay having a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet being located on a side of the relay facing the window; a cover fixed to the first conductive sheet and / or the second conductive sheet; and the cover is exposed to the receiving cavity through the window.

[0015] When the relay is fixed in the insulation box, the cover can be exposed outside the insulation box from the window. When the relay needs to be pulled out, the staff can directly apply force to the cover to pull out the relay, reducing the constraints of narrow space on plugging operation, making it easier to apply force to the relay, making the operation simpler, and improving the disassembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 An exploded view of the power distribution device provided by the present application.

[0017] Figure 2 An exploded view of the cover, relay and insulation box provided by the present application.

[0018] Figure 3 An exploded view of the relay assembly and insulation box provided by the present application.

[0019] Figure 4 An exploded view of the relay assembly provided by the present application.

[0020] Figure 5 A structural schematic view of the relay assembly provided by the present application.

[0021] Figure 6 A cross-sectional schematic view of the relay assembly provided by the present application.

[0022] Explanation of main element symbols

[0023] 100, cover; 10, fixed block; 11, fixed hole; 12, fixing piece; 121, fixed screw; 13, positioning column; 14, reinforcing piece; 20, first covering block; 21, first communication hole; 30, second covering block; 31, second communication hole; 40, first connecting plate; 41, second blocking block; 50, handle block; 51, buckle position; 511, buckle space; 60, second connecting plate; 61, first blocking block; 62, accommodation space; 70, third connecting plate; 200, relay; 201, main body; 202, first conductive; 2021, first via hole; 2022, mounting hole; 2023, insertion hole; 203, second conductive piece; 2031, second via hole; 204, first overflow screw; 205, second overflow screw; 300, box body; 301, accommodating cavity; 302, box cover; 400, insulation box; 401, box cover; 402, window; 403, accommodating cavity; 500, copper bar assembly; 501, first copper bar; 502, second copper bar; 600, relay assembly. DETAILED DESCRIPTION

[0024] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified. And / or", the association relationship of the associated objects is described, which means that there can be three kinds of relationships, for example, A and / or B can represent the following cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural.

[0025] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an element disposed therebetween. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there can be an element disposed therebetween. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "including", "provided with" and their any variants in the specification and claims of the present application and the above description are intended to cover non-exclusive inclusion.

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0028] The embodiments of the present application first provide a relay assembly, which is applied to a power distribution device. The power distribution device is used to be electrically connected with an external power source, which can be a commercial power, an energy storage power source, a generator, a photovoltaic assembly, etc. to distribute the electric energy of the external power source to a load, which can be a household power grid or an electrical equipment.

[0029] Figure 1 An exploded view of the power distribution device provided in the present application. Figure 2 An exploded view of the cover, relay and insulation box provided in the present application.

[0030] As shown in Figure 1 and Figure 2 , the power distribution device comprises a box body 300, an insulation box 400, a copper bar assembly 500 and a relay assembly 600. The insulation box 400 is arranged in the box body 300, the insulation box 400 is provided with a receiving cavity 403, and one side of the insulation box 400 is provided with a window 402. The copper bar assembly 500 is arranged in the receiving cavity 403. The relay assembly 600 is arranged and fixed in the receiving cavity 403, the relay assembly 600 is electrically connected with the copper bar assembly 500, and the relay assembly 600 is partially exposed outside the receiving cavity 403 through the window 402.

[0031] For example, the box body 300 is made of metal material, the box body 300 has a containing cavity 301, and the insulation box 400 is received and fixed in the containing cavity 301. The box body 300 is also provided with a box cover 302, which is used to fix the box cover 302 on the box body 300 and close the containing cavity 301.

[0032] The insulation box 400 is made of insulating material, and the insulation box 400 is also provided with a box cover 401 arranged at the cavity opening of the receiving cavity 403 to shield the receiving cavity 403. The box cover 401 is provided with a window 402, and the window 402 penetrates the box cover 401, so that part of the structure in the insulation box 400 can be exposed outside the window 402. Among them, the relay assembly 600 can be inserted into or pulled out of the insulation box 400 through the window 402.

[0033] The copper bar assembly 500 corresponds to the power distribution branch of the power distribution device, and the copper bar assembly 500 is used to establish electrical connection between the relay assembly 600 and the power distribution branch. The copper bar assembly 500 has a plurality of copper bar assemblies 500, and the number of copper bar assemblies 500 can be configured according to the number of power distribution branches.

[0034] Figure 3 An exploded view of the relay assembly and the insulation box provided in the present application.

[0035] As shown in Figure 2 and Figure 3 , each group of copper bar assemblies 500 comprises a first copper bar 501 and a second copper bar 502, and the first copper bar 501 and the second copper bar 502 are fixed in the insulation box 400. The height of the first copper bar 501 in the first direction is lower than the height of the second copper bar 502 in the first direction. Among them, the first direction is the Z-axis direction in the figure. The first direction corresponds to the pulling-out direction of the relay assembly 600 when disassembling.

[0036] The first copper bar 501 and the second copper bar 502 have a spacing in the second direction to accommodate the relay assembly 600. One end of the first copper bar 501 exposed to the insulating box 400 through the window 402 and is provided with a first connecting hole. One end of the second copper bar 502 exposed to the insulating box 400 through the window 402 and is provided with a second connecting hole. The first connecting hole and the second connecting hole are used to cooperate with the fixing structure such as screws, bolts, pins and the like. The second direction has an included angle with the first direction, and the second direction is the X-axis direction in the figure.

[0037] In the examples of the present application, the number of copper bar assemblies 500 is 12, and the 12 copper bar assemblies 500 are arranged in two columns. Each column of copper bar assemblies 500 is arranged in sequence along the third direction. The first direction, the second direction and the third direction have an included angle, and the third direction is the Y-axis direction in the figure.

[0038] Figure 4 The exploded view of the relay assembly provided in the present application is shown.

[0039] As shown in Figure 2 , Figure 3 and Figure 4 , the relay assembly 600 includes a cover 100 and a relay 200. The cover 100 is arranged on the relay 200, and the relay 200 is installed in the insulating box 400. The cover 100 can be used as a decorative cover of the relay 200, which plays a role of covering and protecting the relay 200. The relay 200 is arranged corresponding to the copper bar assembly 500, and the relay 200 is used to connect with the corresponding copper bar assembly 500 to control the on-off of the power distribution branch and realize intelligent control of the power distribution branch.

[0040] The relay 200 has a first conductive sheet 202 and a second conductive sheet 203. The relay 200 is arranged in the accommodation cavity 402, and the first conductive sheet 202 and the second conductive sheet 203 are located on the side of the relay 200 facing the window 402.

[0041] For example, the relay 200 includes a main body 201, a first conductive sheet 202 and a second conductive sheet 203. The first conductive sheet 202 and the second conductive sheet 203 are arranged on the side of the main body 201 facing the window 402, and the first conductive sheet 202 and the second conductive sheet 203 are arranged in the second direction. When the relay 200 is installed, the main body 201 is inserted between the first copper bar 501 and the second copper bar 502 through the window 402 of the insulating box 400, and the first conductive sheet 202 and the second conductive sheet 203 are connected with the first copper bar 501 and the second copper bar 502 respectively.

[0042] In the embodiment, the first conductive sheet 202 is configured with a first overcurrent screw 204, the first overcurrent screw 204 is used to be arranged in the first conductive sheet 202 and to fix and electrically connect the first conductive sheet 202.

[0043] Specifically, the first conductive sheet 202 is provided with a first through hole 2021, the first conductive sheet 202 is overlapped on the end of the first copper bar 501, and the first overcurrent screw 204 is fixed and electrically connected to the first conductive sheet 202 and the first copper bar 501 through the first through hole 2021 of the first conductive sheet 202 and the first connecting hole of the first copper bar 501.

[0044] Specifically, the first conductive sheet 202 is provided with a first through hole 2021, the first conductive sheet 202 is overlapped on the end of the first copper bar 501, and the first overcurrent screw 204 is fixed and electrically connected to the first conductive sheet 202 and the first copper bar 501 through the first through hole 2021 of the first conductive sheet 202 and the first connecting hole of the first copper bar 501.

[0045] In the embodiment, the second conductive sheet 203 is configured with a second overcurrent screw 205, the second overcurrent screw 205 is used to be arranged in the second conductive sheet 203 and to fix and electrically connect the second conductive sheet 203.

[0046] Specifically, the second conductive sheet 203 is provided with a second through hole 2031, the second conductive sheet 203 is overlapped on the end of the second copper bar 502, and the second overcurrent screw 205 is fixed and electrically connected to the second conductive sheet 203 and the second copper bar 502 through the second through hole 2031 of the second conductive sheet 203 and the second connecting hole of the second copper bar 502.

[0047] Specifically, the first conductive sheet 202 is provided with a first through hole 2021, the first conductive sheet 202 is overlapped on the end of the first copper bar 501, and the first overcurrent screw 204 is fixed and electrically connected to the first conductive sheet 202 and the first copper bar 501 through the first through hole 2021 of the first conductive sheet 202 and the first connecting hole of the first copper bar 501.

[0048] Figure 5 The structure schematic diagram of the relay assembly is provided.Figure 6 A cross-sectional view of a relay assembly is provided.

[0049] As shown in Figure 5 and Figure 6 , the cover 100 is fixed to the first conductive sheet 202 and / or the second conductive sheet 203. The cover 100 is exposed to the receiving cavity 403 through the window 402.

[0050] Thus, when the relay 200 is fixed in the insulating box 400, the cover 100 can be exposed to the insulating box 400 from the window 402. When the relay 200 needs to be pulled out, the staff can directly apply force to the cover 100 to pull out the relay 200, reducing the constraints of narrow space on plugging and unplugging operations, making it easier to apply force to the relay 200, and making the operation simpler and improving the disassembly efficiency.

[0051] In some embodiments, the cover 100 includes a fixed block 10, a first cover block 20, and a second cover block 30. The fixed block 10 is fixedly connected to the first conductive sheet 202 and / or the second conductive sheet 203. The first cover block 20 is connected to the fixed block 10, and the second cover block 30 is connected to the fixed block 10. The first cover block 20 covers the first conductive sheet 202, and the second cover block 30 covers the second conductive sheet 203.

[0052] For example, the fixed block 10 is located on the side of the first conductive sheet 202 away from the first copper bar 501. The first cover block 20 is located on the side of the first conductive sheet 202 facing the window 402 and covers the first power connection section of the first conductive sheet 202. The second cover block 30 is located on the side of the second conductive sheet 203 facing the window 402 and covers the second power connection section of the second conductive sheet 203.

[0053] Thus, the fixed block 10, the first cover block 20, and the second cover block 30 can cover and protect the first conductive sheet 202 and the second conductive sheet 203 from the window 402, reducing the interference of external factors of the insulating box 400 on the relay 200.

[0054] As shown in Figure 3 , Figure 5 and Figure 6 , in some embodiments, the first cover block 20 is provided with a first communication hole 21. The first communication hole 21 is used to accommodate the first overcurrent screw 204. The first cover block 20 covers one end of the first conductive sheet 202 close to the first through hole 2021, and the first communication hole 21 is aligned with the first through hole 2021.

[0055] The second cover block 30 is provided with a second communication hole 31. The second communication hole 31 is used to accommodate the second overcurrent screw 205. The second cover block 30 covers one end of the second conductive sheet 203 close to the second through hole 2031, and the second communication hole 31 is aligned with the second through hole 2031.

[0056] In the embodiment, the installation mode of the relay 200 can be that the main body 201 of the relay 200 is inserted between the first copper bar 501 and the second copper bar 502 from the window 402 of the insulating box 400, the first through hole 2021 of the first conductive sheet 202 is aligned with the first connecting hole of the first copper bar 501, the second through hole 2031 of the second conductive sheet 203 is aligned with the second connecting hole of the second copper bar 502, then the first through-flow screw 204 is screwed between the first conductive sheet 202 and the first copper bar 501 through the first communication hole 21, and the second through-flow screw 205 is screwed between the second conductive sheet 203 and the second copper bar 502 through the second communication hole 31.

[0057] In the embodiment, the disassembly mode of the relay 200 can be that the first through-flow screw 204 is unscrewed from the first conductive sheet 202, the second through-flow screw 205 is unscrewed from the second conductive sheet 203, and the main body 201 of the relay 200 is pulled out from between the first copper bar 501 and the second copper bar 502. The insertion direction and the pulling-out direction in the above disassembly and assembly process are opposite, and both the insertion direction and the pulling-out direction are parallel to the first direction.

[0058] It can be understood that, in the process of screwing the first through-flow screw 204 between the first conductive sheet 202 and the first copper bar 501 through the first communication hole 21, the first cover block 20 accommodates the first through-flow screw 204 through the first communication hole 21 and limits the first through-flow screw 204, so as to prevent the first through-flow screw 204 from falling off during the screwing process.

[0059] In the process of screwing the second through-flow screw 205 between the second conductive sheet 203 and the second copper bar 502 through the second communication hole 31, the second cover block 30 accommodates the second through-flow screw 205 through the second communication hole 31 and limits the second through-flow screw 205, so as to prevent the second through-flow screw 205 from falling off during the screwing process.

[0060] In this way, the first through-flow screw 204 and the second through-flow screw 205 can be prevented from falling off during the installation process, and the installation difficulty of the relay 200 is reduced.

[0061] It can be understood that, in the process of unscrewing the first through-flow screw 204 from the first conductive sheet 202, the first cover block 20 accommodates the first through-flow screw 204 through the first communication hole 21, so as to prevent the first through-flow screw 204 from falling off after being unscrewed.

[0062] In the process of unscrewing the second through-flow screw 205 from the second conductive sheet 203, the second cover block 30 accommodates the second through-flow screw 205 through the second communication hole 31, so as to prevent the second through-flow screw 205 from falling off after being unscrewed.

[0063] In this way, the first overcurrent screw 204 and the second overcurrent screw 205 can be prevented from falling during disassembly, and the difficulty of disassembling the relay 200 is reduced.

[0064] By arranging the cover 100 on the relay 200, the relay 200 can be conveniently plugged and unplugged, and the screw structure of the relay 200 can be accommodated and limited during disassembly, thereby reducing the difficulty of disassembling the relay 200 and facilitating the later maintenance of the equipment.

[0065] In some embodiments, the fixing block 10 is in a cylindrical shape as a whole, and the fixing block 10 is arranged to extend in a first direction. The fixing block 10 is used to connect one end of the first conductive sheet 202 to form a first end, and the other end of the fixing block 10 forms a second end. The second end of the fixing block 10 is provided with a first connecting plate 40 arranged to extend in a second direction.

[0066] For example, the first connecting plate 40 is integrally formed with the fixing block 10, and the length of the first connecting plate 40 in the second direction is greater than the outer diameter of the fixing block 10, so that both ends of the first connecting plate 40 extend out of both sides of the fixing block 10, one end of the first connecting plate 40 is connected to the first cover block 20, and the other end of the first connecting plate 40 is connected to the second cover block 30.

[0067] The first connecting plate 40 establishes a fixed connection between the first cover block 20, the second cover block 30 and the fixing block 10 on the one hand, and covers the area between the fixing block 10 and the second cover block 30 on the other hand, that is, covers the part of the first conductive sheet 202 and the second conductive sheet 203 close to each other, reduces the exposed area of the first conductive sheet 202 and the second conductive sheet 203, and protects the first conductive sheet 202 and the second conductive sheet 203.

[0068] As shown in FIGS. 1 and 2, Figure 5 and Figure 6 In some embodiments, the cover 100 further includes a fixing member 12. The fixing block 10 is provided with a fixing hole 11, and the fixing member 12 is arranged to pass through the fixing hole 11 and is connected to the first conductive sheet 202 and / or the second conductive sheet 203.

[0069] In the example of the present application, the fixing member 12 passes through the fixing hole 11 and is connected to the first conductive sheet 202. The fixing member 12 is a fixing screw 121, and the first conductive sheet 202 is provided with a mounting hole 2022 for connecting the fixing screw 121. In this way, the fixing block 10 is detachably connected to the first conductive sheet 202 through the fixing screw 121.

[0070] Specifically, the fixing hole 11 is a blind hole, the fixing hole 11 forms a hole opening through the second end of the fixing block 10 along the first direction, and the length of the fixing hole 11 is greater than the length of the fixing member 12. The fixing member 12 is threaded into the hole bottom of the fixing hole 11 and the mounting hole 2022 of the first conductive sheet 202, and is connected with the fixing nut to enable the fixing block 10 to be fixedly connected with the first conductive sheet 202.

[0071] When it is required to fix the cover body 100 to the relay 200, the fixing hole 11 of the fixing block 10 can be aligned with the mounting hole 2022 of the first conductive sheet 202, and then the fixing member 12 is threaded into the first conductive sheet 202 through the fixing hole 11. When it is required to disassemble the cover body 100 from the relay 200, the fixing member 12 can be screwed out of the first conductive sheet 202, and the fixing block 10 and the first conductive sheet 202 can be separated. In this way, the cover body 100 and the relay 200 are conveniently disassembled and assembled, and the relay 200 is conveniently maintained.

[0072] During the process of threading the fixing member 12 into the first conductive sheet 202 through the fixing hole 11, the fixing block 10 limits the fixing member 12 through the fixing hole 11 to prevent the fixing member 12 from falling during the threading process. During the process of screwing the fixing member 12 out of the first conductive sheet 202, the fixing block 10 accommodates the fixing member 12 through the fixing hole 11 to prevent the fixing member 12 from falling after being screwed out. In this way, the fixing member 12 can be prevented from falling during the disassembly and assembly process, and the difficulty of disassembly and assembly of the cover body 100 is reduced.

[0073] It should be noted that the fixing member 12 in the embodiment is in the form of a screw structure, and in other embodiments, the fixing member 12 can also be in the form of a bolt, a pin, or the like, or be connected through clamping, interference fit, or the like, as long as the fixing block 10 and the first conductive sheet 202 can be fixedly connected, and the present application does not limit this.

[0074] It can be understood that in the example of the present application, the fixing member 12 is threaded into the fixing hole 11 and connected to the first conductive sheet 202, so that the fixing block 10 is fixed to the first conductive sheet 202 through the fixing member 12, and the cover body 100 is fixed to the first conductive sheet 202; in other embodiments, the fixing member 12 can also be threaded into the fixing hole 11 and connected to the second conductive sheet 203, so that the fixing block 10 is fixed to the second conductive sheet 203 through the fixing member 12, and the cover body 100 is fixed to the second conductive sheet 203. That is, the second conductive sheet 203 is provided with the mounting hole 2022, and the fixing block 10 is detachably connected with the second conductive sheet 203 through the fixing screw 121, and the present application does not limit this. Figure 4 and Figure 6As shown, in some embodiments, the cover 100 further comprises positioning posts 13 connected to the fixing block 10 and extending in the first direction. The positioning posts 13 are configured to be inserted into the first conductive sheet 202 and / or the second conductive sheet 203.

[0075] By inserting the positioning posts 13 into the first conductive sheet 202 and / or the second conductive sheet 203, the relative positions between the fixing block 10 and the first conductive sheet 202 and / or the second conductive sheet 203 can be positioned, the connection strength of the fixing block 10 can be improved, the risk of the cover 100 being separated from the relay 200 can be reduced, and the installation efficiency of the cover 100 can be improved.

[0076] In the exemplary embodiments of the present application, the first conductive sheet 202 is provided with insertion holes 2023, and the positioning posts 13 are configured to be inserted into the insertion holes 2023 of the first conductive sheet 202. Specifically, one end of the positioning post 13 is fixedly connected to the first connecting plate 40, and the other end of the positioning post 13 is inserted into the first conductive sheet 202. The positioning posts 13 are provided in plurality, and the plurality of positioning posts 13 are circumferentially and interval distributed around the fixing block 10. The first conductive sheet 202 is provided with a plurality of insertion holes 2023, and the positions of the plurality of insertion holes 2023 correspond to the position distribution of the plurality of positioning posts 13. The plurality of positioning posts 13 can be respectively inserted into the corresponding insertion holes 2023, and the positioning effect can be further improved.

[0077] In some embodiments, the cover 100 further comprises reinforcing sheets 14 configured to strengthen the connection strength between the fixing block 10 and the positioning posts 13. As shown, the reinforcing sheets 14 are arranged between the fixing block 10, the positioning posts 13 and the first connecting plate 40, and the reinforcing sheets 14, the fixing block 10, the positioning posts 13 and the first connecting plate 40 are integrally formed. It can be understood that the overall rigidity of the cover 100 can be strengthened by the reinforcing sheets 14, and the risk of damage to the cover 100 during disassembly can be reduced.

[0078] As shown in FIGS. 1 and 2, Figure 3 and Figure 6 As shown, in some embodiments, the cover 100 further comprises a handle block 50 connected to the fixing block 10 away from the first conductive sheet 202, so that the handle block 50 is exposed to the window 402. When the relay 200 needs to be pulled out, the staff can directly apply force to the handle block 50 to pull out the cover 100 and the relay 200 as a whole.

[0079] In some embodiments, the handle block 50 extends in the first direction and is located on the side of the fixing block 10 close to the first cover block 20. As shown, the handle block 50 is connected to the fixing block 10 through the first connecting plate 40, the handle block 50 is located on the end of the first connecting plate 40 close to the first cover block 20, and the handle block 50 and the first connecting plate 40 are integrally formed.

[0080] It can be understood that, in the examples of the present application, the first conductive sheet 202 is provided with the insertion hole 2023, and the positioning column 13 is used to be inserted into the insertion hole 2023 of the first conductive sheet 202. In other embodiments, the second conductive sheet 203 can be provided with the insertion hole 2023, and one end of the positioning column 13 is fixedly connected to the first connecting plate 40, and the other end of the positioning column 13 is inserted into the insertion hole 2023 of the second conductive sheet 203, and the present application does not limit this.

[0081] In some embodiments, the handle block 50 is provided with the buckle position 51, and the buckle position 51 has a first spacing with the fixed block 10 in the first direction to form a hand buckling space 511. Among them, the first spacing can be the minimum distance of the buckle position 51 and the first connecting plate 40 in the first direction. For example, the buckle position 51 is located at one end of the handle block 50 away from the first connecting plate 40, and the buckle position 51 protrudes in the direction close to the second cover block 30.

[0082] It can be understood that, when the plug-in relay 200 is inserted or pulled out, the hand buckling space 511 can be used for the hand of the worker to be inserted between the buckle position 51 and the first connecting plate 40, so that the worker can easily apply force to the buckle position 51 in the first direction, thereby improving the disassembly efficiency of the relay 200.

[0083] In some embodiments, the first cover block 20 is in a cylindrical shape as a whole, and the first cover block 20 is arranged to extend in the first direction. The first cover block 20 is located on the side of the fixed block 10 away from the second cover block 30, and the first cover block 20 is spaced apart from the fixed block 10 in the second direction. The first communication hole 21 penetrates through the first cover block 20 in the first direction, and the inner hole diameter of the first communication hole 21 is greater than the maximum diameter of the first flow screw 204.

[0084] The first cover block 20 is used to connect one end of the first conductive sheet 202 to form a first end, and the first end of the first cover block 20 is flush with the first end of the fixed block 10. The other end of the first cover block 20 forms a second end. The second connecting plate 60 is arranged to extend in the second direction. The second connecting plate 60 has a spacing with the first connecting plate 40 in the first direction, and the third connecting plate 70 is connected between the second connecting plate 60 and the first connecting plate 40.

[0085] For example, the third connecting plate 70 is arranged to extend in the first direction, and the two ends of the third connecting plate 70 are connected to the first connecting plate 40 and the second connecting plate 60 respectively, so that the first cover block 20 is relatively fixed with the fixed block 10. Among them, the first connecting plate 40, the second connecting plate 60, the third connecting plate 70 and the first cover block 20 are integrally formed and fixed.

[0086] In some embodiments, the second connecting plate 60 is provided with a first blocking block 61 on a side thereof facing the first cover block 20. The first blocking block 61 extends in the first direction and is arranged around the first cover block 20. The first blocking block 61 has a spacing between an inner side thereof and an outer side of the first cover block 20. For example, the second connecting plate 60 and the first cover block 20 are integrally formed.

[0087] It can be understood that the first blocking block 61 can cover the end of the first conductive sheet 202 in cooperation with the first cover block 20, reduce the exposed area of the first conductive sheet 202, and protect the first conductive sheet 202. On the other hand, the first cover block 20 and the first blocking block 61 form a hollow portion therebetween to reduce the overall weight of the cover body 100.

[0088] In some embodiments, the first cover block 20 and the buckle 51 have a second spacing in the first direction to form a space 62. The second spacing can be the minimum distance between the buckle 51 and the second connecting plate 60 in the first direction. For example, the space 62 is formed between the third connecting plate 70 and the second connecting plate 60, and the second spacing is greater than the first spacing. The space 62 is used for other objects to enter between the first cover block 20 and the buckle 51 and apply a force to the buckle 51 in the second direction, facilitating the pulling out of the relay 200.

[0089] For example, when the relay 200 is pulled out, the space 62 can allow the hands of a worker to enter between the third connecting plate 70 and the second connecting plate 60, facilitating the worker to apply a force to the third connecting plate 70 in the second direction, so that the cover body 100 and the relay 200 can swing left and right as a whole, which is helpful for the pulling out of the relay 200.

[0090] In some embodiments, the buckle 51 is arranged on a side of the handle block 50 away from the space 62. In this way, the space 62 and the hand holding space 511 are formed on two sides of the handle block 50, respectively. When the relay 200 is pulled out, the worker can press the third connecting plate 70 by inserting the hands into the space 62, and pull the buckle 51 by inserting the hands into the hand holding space 511, which improves the force effect of the cover body 100 as a whole.

[0091] In some embodiments, the second cover block 30 is in a cylindrical shape as a whole and extends in the first direction. The second cover block 30 is arranged on a side of the fixed block 10 away from the first cover block 20, and the second cover block 30 and the fixed block 10 are spaced apart in the second direction. The second communication hole 31 penetrates the second cover block 30 in the first direction, and the inner hole diameter of the second communication hole 31 is greater than the maximum diameter of the second flow screw 205.

[0092] The second covering block 30 is used to connect one end of the second conductive sheet 203 to form a first end, and the first end of the second covering block 30 has a height difference with the first end of the fixed block 10. The other end of the second covering block 30 forms a second end. The second end of the second covering block 30 is connected to the first connecting plate 40.

[0093] In some embodiments, one side of the first connecting plate 40 facing the second covering block 30 is provided with a second blocking block 41, and the second blocking block 41 is distributed along both sides of the first connecting plate 40. The second blocking block 41 is connected to one side of the second covering block 30. For example, the first connecting plate 40, the second blocking block 41 and the second covering block 30 are integrally formed.

[0094] It can be understood that the second blocking block 41 can cooperate with the second covering block 30 to cover the second conductive sheet 203 and the first conductive sheet 202, thereby reducing the exposed area of the second conductive sheet 203 and the first conductive sheet 202, and protecting the second conductive sheet 203 and the first conductive sheet 202. On the other hand, the second covering block 30 and the second blocking block 41 form a hollow part therebetween to reduce the overall weight of the cover 100.

[0095] The embodiments of the present application also provide a power distribution device.

[0096] As shown in Figure 2 , Figure 3 and Figure 4 , the power distribution device comprises a box body 300, an insulation box 400 and the relay assembly 600 in any one of the preceding embodiments. The insulation box 400 is arranged in the box body 300. The insulation box 400 is provided with a receiving cavity 403. The insulation box 400 is provided with a box cover 401. The box cover 401 is arranged at the cavity opening of the receiving cavity 403. The box cover 401 is provided with a window 402.

[0097] The relay assembly 600 comprises a relay 200. The relay 200 has a first conductive sheet 202 and a second conductive sheet 203. The relay 200 is arranged in the receiving cavity 402. The first conductive sheet 202 and the second conductive sheet 203 are located on the side of the relay 200 facing the window 402.

[0098] The cover 100 is connected to the first conductive sheet 202 and the second conductive sheet 203. The cover 100 is exposed to the receiving cavity 403 through the window 402.

[0099] The implementation principle and beneficial effects of the power distribution device provided by the embodiments of the present application can be seen from the related descriptions of the preceding embodiments, which will not be repeated here.

[0100] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A relay assembly characterized by, The utility model provides an insulating box for power distribution equipment, which is provided with a receiving cavity, and one side of the insulating box is provided with a window; the relay assembly comprises: a relay arranged in the receiving cavity, the relay having a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet being located on a side of the relay facing the window; a cover fixed to the first conductive sheet and / or the second conductive sheet, the cover being exposed to the receiving cavity through the window.

2. The relay assembly of claim 1, wherein, The cover comprises: a fixed block fixedly connected to the first conductive sheet and / or the second conductive sheet; a first covering block connected to the fixed block, the first covering block covering the first conductive sheet; a second covering block connected to the fixed block, the second covering block covering the second conductive sheet.

3. The relay assembly of claim 2, wherein, The first conductive sheet is provided with a first through hole for a first through-flow screw to pass through, the first through-flow screw being used for fixing and electrically connecting the first conductive sheet; the second conductive sheet is provided with a second through hole for a second through-flow screw to pass through, the second through-flow screw being used for fixing and electrically connecting the second conductive sheet; The first covering block is provided with a first communication hole aligned with the first through hole, the first communication hole being used for accommodating the first through-flow screw; the second covering block is provided with a second communication hole aligned with the second through hole, the second communication hole being used for accommodating the second through-flow screw.

4. The relay assembly of claim 2, wherein, The cover further comprises a fixing member, the fixed block is provided with a fixing hole, and the fixing member passes through the fixing hole and is connected to the first conductive sheet and / or the second conductive sheet.

5. The relay assembly of claim 4, wherein, The fixing member is a fixing screw, and the first conductive sheet and / or the second conductive sheet is provided with a mounting hole for the fixing screw to be connected.

6. The relay assembly of claim 2, wherein, The cover further comprises a positioning column connected to the fixed block, the positioning column being used for cooperating with a plug hole of the first conductive sheet and / or the second conductive sheet to be plugged.

7. The relay assembly of claim 2, wherein, The cover further comprises a handle block connected to a side of the fixed block away from the first conductive sheet.

8. The relay assembly of claim 7, wherein, The handle block is arranged in a first direction, the handle block is provided with a buckling position, the buckling position has a first spacing with the fixed block in the first direction to form a buckling space; wherein the first direction corresponds to a pulling-out direction of the relay when being disassembled.

9. The relay assembly of claim 8, wherein, The first covering block has a second spacing with the buckling position in the first direction to form a giving space; the giving space is used for other objects to enter between the first covering block and the buckling position and apply force to the buckling position.

10. A power distribution apparatus, comprising: The utility model provides an insulating box for power distribution equipment, which is provided with a receiving cavity, and one side of the insulating box is provided with a window; the relay assembly comprises: a relay arranged in the receiving cavity, the relay having a first conductive sheet and a second conductive sheet, the first conductive sheet and the second conductive sheet being located on a side of the relay facing the window; ​ ​ A cover is fixed to the first conductive sheet and / or the second conductive sheet, and is exposed to the receiving cavity through the window.

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