Wiring structure and distribution box

Abstract

The application relates to the technical field of distribution boxes, and discloses a wiring structure and a distribution box. The wiring structure comprises a mounting seat and a cable. The mounting seat is provided with a first opening communicating with the outside world; the cable has a first end portion and a second end portion, the first end portion of the cable is detachably plugged with the mounting seat, the first end portion is provided with a first conductive terminal, the first conductive terminal is used for plugging and electrically conducting with a circuit breaker, the second end portion passes out from the first opening from the mounting seat, and the second end portion is connected with a second conductive terminal, and the second conductive terminal is used for electrically connecting with a circuit board. The application improves the structure of the cable, and the first conductive terminal and the second conductive terminal are prearranged. The cable can be directly fixed with the mounting seat through plugging, the first conductive terminal is directly plugged and connected with a conductive groove of the circuit breaker, and a series of complicated wiring steps such as on-site cutting of the cable, stripping of the wire, pressing of the terminal, locking of the screw and the like are not needed, so that the installation efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of distribution box technology, and in particular to a wiring structure and distribution box. Background Technology

[0002] Circuit breakers are electrical components used to protect circuits and electrical equipment and are closely connected to distribution boxes. They are a core component of distribution boxes and play a vital role. Currently, circuit breakers on the market are usually not installed directly on the distribution box, but are shipped as accessories. Users need to perform a series of cumbersome wiring steps on-site, such as installing the circuit breaker, cutting cables, stripping wires, crimping terminals, and tightening screws, which results in low installation efficiency. Utility Model Content

[0003] This application provides a wiring structure and a distribution box, which can effectively improve the installation efficiency of the distribution box.

[0004] In a first aspect, this application provides a wiring structure, which includes a mounting base and a cable. The mounting base has a first opening communicating with the outside; the cable has a first end and a second end, the first end of the cable being detachably plugged into the mounting base, the first end being provided with a first conductive terminal for connecting to a circuit breaker for electrical conduction, and the second end passing through the first opening from inside the mounting base, the second end being connected to a second conductive terminal for electrical connection to a circuit board.

[0005] In some embodiments, the mounting base has a receiving space, and a first opening connects the receiving space to the outside; the first end of the cable includes a snap-fit ​​protrusion that can be adapted to be installed in the receiving space, and the snap-fit ​​protrusion abuts against the bottom wall of the receiving space.

[0006] In some embodiments, the side wall of the mounting base is provided with a first clearance opening, and a first conductive terminal extends out from the first clearance opening.

[0007] In some embodiments, the wiring structure further includes a fixing cover, which is detachably connected to the mounting base. The fixing cover abuts and fixes the snap-fit ​​protrusion inside the mounting base. The side wall of the mounting base is provided with a first clearance opening, through which a first conductive terminal protrudes.

[0008] In some embodiments, the inner wall of the mounting base is provided with a first buckle, and the fixing cover is provided with a second buckle, and the first buckle and the second buckle are engaged and connected.

[0009] Secondly, this application provides a distribution box, which includes a box body, a circuit breaker, and a wiring structure as described in any one of the claims; the box body is provided with a first receiving cavity, a mounting base is disposed in the first receiving cavity, and a first opening communicates the first receiving cavity with the outside; the circuit breaker is disposed in the first receiving cavity, and the circuit breaker is provided with a conductive groove, which is plugged into and connected to a first conductive terminal.

[0010] In some embodiments, a mounting base is disposed at the bottom of a first receiving cavity, a first end is inserted into the mounting base in a first direction, and a conductive groove is provided on the side of the circuit breaker, the conductive groove is inserted into a first conductive terminal in a second direction, wherein the first direction is perpendicular to the bottom of the first receiving cavity, and the second direction is perpendicular to the first direction.

[0011] In some embodiments, the bottom of the circuit breaker is provided with a fastening groove, the fastening groove having a first fastening side and a second fastening side, the first fastening side being close to the conductive groove; the distribution box also includes a mounting bracket, the mounting bracket being disposed at the bottom of the first receiving cavity, the circuit breaker being detachably connected to the mounting bracket; the mounting bracket is provided with a third fastening side and a fourth fastening side, the third fastening side being close to the mounting base, the first fastening side engaging with the third fastening side, and the second fastening side engaging with the fourth fastening side.

[0012] In some embodiments, the housing is provided with a first positioning part at the bottom of the first receiving cavity, and the mounting bracket is provided with a second positioning part, the first positioning part and the second positioning part being connected in cooperation.

[0013] In some embodiments, the housing further includes a positioning partition, which is disposed at the bottom of the first receiving cavity, between the mounting bracket and the mounting base, and is connected to the circuit breaker.

[0014] In some embodiments, there are multiple mounting bases arranged along a third direction, which is perpendicular to the first direction and the second direction, respectively; and / or, there are multiple positioning partitions arranged along a third direction, with a mounting base corresponding to each of two adjacent positioning partitions.

[0015] In some embodiments, the back of the enclosure is provided with a second receiving cavity, and a first opening is located inside the second receiving cavity, the first opening connecting the first receiving cavity and the second receiving cavity; the distribution box also includes a main board assembly and a back plate, the main board assembly is located inside the second receiving cavity and is fixedly connected to the enclosure, the main board assembly is electrically connected to a second conductive terminal; the back plate is connected to the enclosure to cover the second receiving cavity.

[0016] The beneficial effects of this application's embodiments are as follows: This application improves the cable structure by pre-setting the first and second conductive terminals, and by setting a mounting base on the enclosure. In this way, during installation, the cable can be directly fixed to the enclosure by plugging it in, and the conductive groove of the circuit breaker can be directly plugged into the first conductive terminal, thus completing the installation of the circuit breaker and the cable. This eliminates the need for users to perform a series of cumbersome wiring steps on-site, such as cutting cables, stripping wires, crimping terminals, and tightening screws, greatly improving installation efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is an exploded view of the distribution box according to an embodiment of this application; Figure 2 This is a schematic diagram of the cables in the distribution box according to an embodiment of this application; Figure 3 This is a schematic diagram of the distribution box of this application before the cables and mounting base are assembled; Figure 4 This is a schematic diagram of the fixed cover and mounting base of the distribution box in the embodiment of this application before assembly; Figure 5 yes Figure 4 A magnified schematic diagram of part A in the middle; Figure 6 This is a schematic diagram of the distribution box before the circuit breaker and cables are assembled according to an embodiment of this application; Figure 7 This is a schematic diagram of the circuit breaker and mounting bracket of the distribution box in the embodiment of this application before assembly; Figure 8 This is a schematic diagram of the mounting bracket and the box body of the distribution box according to an embodiment of this application before assembly; Figure 9 This is an exploded view of the distribution box in an embodiment of this application from another perspective; Figure 10 This is a schematic diagram of the back of the distribution box in the embodiment of this application, omitting the back plate; The reference numerals in the detailed embodiments are as follows: 100. Distribution box; X, first direction; Y, second direction; Z, third direction; 10. Housing; 11. First receiving cavity; 12. Mounting base; 121. First opening; 122. First clearance opening; 123. First latch; 124. Accommodation space; 13. First positioning part; 14. Second receiving cavity; 20. Cable; 21. First end; 211. First conductive terminal; 212. Snap-fit ​​protrusion; 22. Second end; 221. Second conductive terminal; 30. Circuit breaker; 31. Conductive groove; 32. Snap-fit ​​groove; 321. First snap-fit ​​side; 322. Second snap-fit ​​side; 40. Fixed cover; 41. Second buckle; 50. Mounting bracket; 51. Third snap-fit ​​side; 52. Fourth snap-fit ​​side; 53. Second positioning part; 60. Positioning partition; 70. Motherboard components; 80. Back panel. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] Please see Figure 2 , Figure 3 and Figure 5This application provides a wiring structure, which includes a mounting base 12 and a cable 20. The mounting base 12 has a first opening 121 connecting its interior to the outside; the cable 20 has a first end 21 and a second end 22. The first end 21 of the cable 20 is detachably plugged into the mounting base 12. The first end 21 is provided with a first conductive terminal 211, which is used to connect with a circuit breaker 30 for electrical conduction. The second end 22 extends out of the mounting base 12 through the first opening 121 and is connected to a second conductive terminal 221, which is used to connect with a circuit board.

[0023] This application improves the structure of the cable 20 by pre-setting a first conductive terminal 211 and a second conductive terminal 221 at both ends of the cable 20. In this way, during the installation process, the first end 21 of the cable 20 can be directly fixed to the mounting base 12 by plugging, and the first conductive terminal 211 can be directly plugged into the circuit breaker. This eliminates the need for users to perform a series of cumbersome wiring steps on-site, such as cutting the cable, stripping the wire, crimping the terminals, and tightening screws, greatly improving installation efficiency.

[0024] In some embodiments, please refer to Figure 3 and Figure 5 The mounting base 12 is provided with a receiving space 124. An opening is provided above the receiving space 124. The opening is opposite to the first opening 121. The first opening 121 connects the receiving space 124 to the outside. The opening facilitates the entry of the cable 20 into the receiving space 124, while the first opening 121 is used for the second end 22 of the cable to pass through, so as to connect with the circuit board assembly.

[0025] The first end 21 of the cable 20 includes a snap-fit ​​protrusion 212, which is adaptable to be installed in the receiving space and abuts against the bottom wall of the receiving space 124. When the second end 22 of the cable 20 passes through the first opening 121, the size of the first opening 121 is smaller than the size of the snap-fit ​​protrusion 212, so the snap-fit ​​protrusion 212 abuts against the bottom wall of the receiving space 124, that is, the snap-fit ​​protrusion 212 cannot pass through the first opening 121.

[0026] In this embodiment, by providing a snap-fit ​​protrusion 212 near the first end 21 of the cable 20, it is convenient to fix the snap-fit ​​protrusion 212 to the mounting base 12. On the other hand, it reduces the length of the first end 21 of the cable 20 extending out of the snap-fit ​​protrusion 212. This can improve the structural strength of the first end 21, reduce its deformation, and make it less prone to softening and deformation, so that the first conductive terminal 211 can be plugged into the circuit breaker 30.

[0027] It is understandable that, such as Figure 3As shown, when preparing or installing the snap-fit ​​protrusion 212, the body of the cable 20 can be bent at about 90 degrees, and then the snap-fit ​​protrusion 212 is formed at the bend by means of plastic injection molding or installation of plastic body, that is, the first end 21 of the cable 20 is set perpendicular to the body of the cable 20. This allows the first end 21 of the cable 20 to extend from the side of the mounting base 12 when the cable 20 is installed in the mounting base 12, which facilitates the first conductive terminal 211 to be inserted and connected to the circuit breaker 30 on the side of the mounting base 12.

[0028] In some embodiments, please refer to Figure 5 The side wall of the mounting base 12 is provided with a first clearance opening 122, through which the first conductive terminal 211 protrudes. By providing the first clearance opening 122 for the first conductive terminal 211 to protrude, the snap-fit ​​protrusion 212 can be fully accommodated in the receiving space 124 of the mounting base 12, thereby strengthening the limiting and fixing effect of the side wall of the mounting base 12 on the snap-fit ​​protrusion 212, maintaining the stability of the first conductive terminal 211, and facilitating the subsequent plug-in connection of the first conductive terminal 211 with the circuit breaker 30.

[0029] In some embodiments, please refer to Figure 4 and Figure 5 The wiring structure also includes a fixing cover 40, which is detachably connected to the mounting base 12. The fixing cover 40 abuts and fixes the snap-fit ​​protrusion 212 inside the mounting base 12. By setting the fixing cover 40 to press the snap-fit ​​protrusion 212 into the mounting base 12, the probability of the cable 20 falling out of the mounting base 12 can be reduced, and the assembly firmness can be improved.

[0030] In some embodiments, please refer to Figure 5 The mounting base 12 is provided with a first buckle 123, and the fixing cover 40 is provided with a second buckle 41. The first buckle 123 and the second buckle 41 are fastened together, so that the fixing cover 40 is fixedly connected to the mounting base 12, pressing the first end 21 into the mounting base 12. Furthermore, the first buckle 123 is provided on the inner wall of the mounting base 12, so that when there are multiple mounting bases 12 and they are arranged adjacent to each other, the adjacent first buckles 123 will not interfere with each other.

[0031] Please see Figure 1 This application also provides an embodiment of a distribution box 100, which includes a box body 10, a circuit breaker 30, and the aforementioned wiring structure. The box body 10 is provided with a first receiving cavity 11, and the mounting base 12 of the wiring structure can be disposed on the side wall of the first receiving cavity 11 or at the bottom of the first receiving cavity 11. The circuit breaker 30 is disposed on the inner wall of the box body 10, and the circuit breaker 30 is used to connect to the first conductive terminal 211 of the cable 20.

[0032] In some embodiments, the mounting base 12 and the housing 10 are independent structures, and they can be assembled and connected by means of screwing, snap-fitting, bonding, welding, etc. In other embodiments, the mounting base 12 is integrally formed with the housing 10.

[0033] In some embodiments, please refer to Figure 4 and Figure 6 The mounting base 12 is disposed at the bottom of the first receiving cavity 11, and the cable 20 is inserted and fixed to the mounting base 12 in the first direction X. The opening of the mounting base 12 is disposed opposite to the first opening 121 in the first direction X. The circuit breaker 30 has a conductive groove 31 on its side in the second direction Y, and the conductive groove 31 is inserted and connected to the first conductive terminal 211 in the second direction Y. The first direction X is perpendicular to the bottom of the first receiving cavity 11, and the second direction Y is perpendicular to the first direction X.

[0034] In some embodiments, please refer to Figure 6 and Figure 7 The circuit breaker 30 has a locking groove 32 at its bottom. In the second direction Y, the locking groove 32 has a first locking side 321 and a second locking side 322 extending in the third direction Z. The first locking side 321 is close to the conductive groove 31. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0035] The distribution box 100 also includes a mounting bracket 50, which is disposed at the bottom of the first receiving cavity 11. The circuit breaker 30 is detachably connected to the mounting bracket 50. As an example, in the second direction Y, the mounting bracket 50 has a third engaging side 51 and a fourth engaging side 52 extending in the third direction Z. The third engaging side 51 is close to the mounting base 12. The first engaging side 321 engages with the third engaging side 51, and the second engaging side 322 engages with the fourth engaging side 52, so that the engaging slot 32 of the circuit breaker 30 is assembled and connected to the mounting bracket 50.

[0036] As an example, the installation process for distribution box 100 is as follows: Please refer to... Figures 3 to 5 The cable 20 is connected to the mounting base 12 along the first direction X. The second end 22 of the cable 20 passes through the first opening 121 until the snap-fit ​​protrusion 212 of the cable 20 connects to the mounting base 12 and is snapped and fixed within the receiving space 124. The first conductive terminal 211 extends from the first clearance opening 122. Then, the fixing cover 40 is fastened to the mounting base 12, so that the first end 21 of the cable 20 is fixed within the mounting base 12. Please refer to [link to relevant documentation]. Figure 6The mounting bracket 50 is fixed to the bottom of the first receiving cavity 11. Then, the circuit breaker 30 is brought close to the first end 21 of the cable 20 in the second direction Y, so that the conductive groove 31 is inserted and connected to the first conductive terminal 211. The first engaging side 321 of the circuit breaker 30 is then engaged and connected to the third engaging side 51 of the mounting bracket 50. Please refer to [link to relevant documentation]. Figure 7 Then, the second snap-fit ​​side 322 of the circuit breaker 30 is pressed down along the first direction X, so that the second snap-fit ​​side 322 is snapped and connected with the fourth snap-fit ​​side 52 of the mounting bracket 50. Thus, the assembly of the circuit breaker 30 and the cable 20 in the housing 10 is completed. The operation process is simple, and the cable 20 does not need to be stripped or connected.

[0037] It is understandable that the assembly order of cable 20 and mounting bracket 50 on enclosure 10 can be changed. For example, cable 20 can be installed on mounting base 12 first, and then mounting bracket 50 can be fixed to enclosure 10; or, mounting bracket 50 can be fixed to enclosure 10 first, and then cable 20 can be threaded through and fixed to mounting base 12.

[0038] In some embodiments, please refer to Figure 8 The housing 10 has a first positioning part 13 at the bottom of the first receiving cavity 11, and the mounting bracket 50 has a second positioning part 53. The first positioning part 13 and the second positioning part 53 are connected in cooperation. As an example, the first positioning part 13 is a protruding positioning post, and the second positioning part 53 is a positioning groove. By aligning and inserting the positioning groove of the mounting bracket 50 with the positioning post of the housing 10, the mounting bracket 50 can be positioned and pre-fixed on the housing 10, which facilitates further fixed connection of the mounting bracket 50 to the housing 10 by means of screwing, gluing, snapping, etc.

[0039] In some embodiments, please refer to Figure 5 The housing 10 also includes a positioning partition 60, which is located at the bottom of the first receiving cavity 11. The positioning partition 60 is connected to the circuit breaker 30, thereby positioning the circuit breaker 30 in the first receiving cavity 11 of the housing 10. This helps the circuit breaker 30 to quickly complete the alignment and insertion assembly with the cable 20, reducing assembly time and improving assembly efficiency.

[0040] In a further embodiment, such as Figure 3 As shown, the positioning partition 60 is disposed between the mounting bracket 50 and the mounting base 12. When the circuit breaker 30 approaches the cable 20 along the second direction Y, the positioning partition 60 can abut against the circuit breaker 30, which has a guiding and positioning function for the circuit breaker 30, facilitating the quick insertion and connection of the circuit breaker 30 and the cable 20 in the second direction Y.

[0041] In some embodiments, there are multiple mounting bases 12, arranged along a third direction Z, which is perpendicular to the first direction X and the second direction Y, respectively; and / or, there are multiple positioning partitions 60, arranged along a third direction Z, with one mounting base 12 corresponding to each adjacent positioning partition 60. By providing multiple mounting bases 12, multiple cables 20 and multiple circuit breakers 30 can be assembled, expanding the functional requirements of the distribution box 100. By providing one mounting base 12 corresponding to each adjacent positioning partition 60, one circuit breaker 30 can be quickly positioned and connected to one cable 20.

[0042] In some embodiments, please refer to Figure 9 and Figure 10 The back of the enclosure 10 is provided with a second receiving cavity 14, and a first opening 121 is located inside the second receiving cavity 14, connecting the first receiving cavity 11 and the second receiving cavity 14. The distribution box 100 also includes a main board assembly 70 and a back plate 80. The main board assembly 70 is located inside the second receiving cavity 14 and is fixedly connected to the enclosure 10. The main board assembly 70 is electrically connected to the second conductive terminal 221. The back plate 80 is connected to the enclosure 10 to cover the second receiving cavity 14.

[0043] After the second end 22 of the cable 20 passes through the first opening 121, the motherboard assembly 70 can be installed and fixed inside the second receiving cavity 14. Then, the second end 22 of the cable 20 is bent so that the second conductive terminal 221 is electrically connected to the motherboard assembly 70. As an example, the second conductive terminal 221 is screwed to the motherboard assembly 70. The back plate 80 is used to cover the second receiving cavity 14, which can prevent the motherboard assembly 70 from being directly exposed, reduce the probability of external debris damaging the motherboard assembly 70, and protect the motherboard assembly 70.

[0044] Understandably, during the assembly of the distribution box 100, the mounting bracket 50, cable 20, and circuit breaker 30 can be assembled and fixed in the first receiving cavity 11 first, and then the box body 10 can be flipped over to install and fix the main board assembly 70 in the second receiving cavity 14. Then, the second conductive terminal 221 is screwed and fixed to the main board assembly 70, and finally the back plate 80 is connected to the box body 10 to complete the assembly of the distribution box 100. The main board assembly 70 may include a circuit board, and the second conductive terminal 221 is electrically connected to the circuit board of the main board assembly 70.

[0045] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A wiring structure, characterized in that, include: The mounting base has a first opening communicating with the outside world; The cable has a first end and a second end. The first end of the cable is detachably plugged into the mounting base. The first end is provided with a first conductive terminal, which is used to connect to a circuit breaker for electrical conduction. The second end extends out of the mounting base through the first opening and is connected to a second conductive terminal, which is used to connect to a circuit board for electrical connection.

2. The wiring structure according to claim 1, characterized in that, The mounting base is provided with a receiving space, and the first opening connects the receiving space to the outside. The first end of the cable includes a snap-fit ​​protrusion, which can be adapted to be installed in the receiving space, and the snap-fit ​​protrusion is limited and abuts against the bottom wall of the receiving space.

3. The wiring structure according to claim 2, characterized in that, The side wall of the mounting base is provided with a first clearance opening, and the first conductive terminal passes through the first clearance opening.

4. The wiring structure according to claim 3, characterized in that, The wiring structure also includes a fixing cover, which is detachably connected to the mounting base. The fixing cover abuts and fixes the snap-fit ​​protrusion inside the mounting base.

5. The wiring structure according to claim 4, characterized in that, The inner wall of the mounting base is provided with a first buckle, and the fixing cover is provided with a second buckle, and the first buckle and the second buckle are fastened together.

6. A distribution box, characterized in that, It includes a housing, a circuit breaker, and a wiring structure as described in any one of claims 1-5; The housing is provided with a first receiving cavity, the mounting base is disposed in the first receiving cavity, and the first opening communicates the first receiving cavity with the outside. The circuit breaker is disposed in the first receiving cavity, and the circuit breaker is provided with a conductive groove, which is plugged into and connected to the first conductive terminal.

7. The distribution box according to claim 6, characterized in that, The mounting base is disposed at the bottom of the first receiving cavity, the first end of the cable is inserted into the mounting base in a first direction, the side of the circuit breaker is provided with the conductive groove, the conductive groove is inserted into the first conductive terminal in a second direction, wherein the first direction is perpendicular to the bottom of the first receiving cavity, and the second direction is perpendicular to the first direction.

8. The distribution box according to claim 7, characterized in that, The circuit breaker is provided with a fastening groove at the bottom, the fastening groove having a first fastening side and a second fastening side, the first fastening side being close to the conductive groove; The distribution box also includes a mounting bracket, which is disposed at the bottom of the first receiving cavity. The circuit breaker is detachably connected to the mounting bracket. The mounting bracket has a third fastening side and a fourth fastening side. The third fastening side is close to the mounting base. The first fastening side is engaged with the third fastening side, and the second fastening side is engaged with the fourth fastening side.

9. The distribution box according to claim 8, characterized in that, The housing has a first positioning part at the bottom of the first receiving cavity, and the mounting bracket has a second positioning part, with the first positioning part and the second positioning part being connected in cooperation.

10. The distribution box according to claim 8, characterized in that, The enclosure also includes a positioning partition, which is disposed at the bottom of the first receiving cavity, between the mounting bracket and the mounting base, and is connected to the circuit breaker.

11. The distribution box according to any one of claims 6-10, characterized in that, The back of the housing is provided with a second receiving cavity, the first opening is located inside the second receiving cavity, and the first opening connects the first receiving cavity and the second receiving cavity; The distribution box also includes a main board assembly and a back plate. The main board assembly is located inside the second receiving cavity and is fixedly connected to the box body. The main board assembly is electrically connected to the second conductive terminal. The back plate is connected to the box body to cover the second receiving cavity.

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