Circuit board group and inverter

Abstract

The embodiment of the utility model relates to the technical field of inverters, and discloses a circuit board group and an inverter, the circuit board group comprises a first circuit board, a second circuit board and a connecting sheet, the first circuit board is provided with a first connecting part; the second circuit board is provided with a second connecting part, and the first connecting part is matched with the second connecting part in an inserted mode and electrically connected with the second connecting part; the connecting piece comprises a plate body, a first welding part and a second welding part, the first welding part is arranged on the first side wall of the plate body, the second welding part is arranged on the second side wall of the plate body, the first side wall and the second side wall are adjacently arranged, the first welding part is welded and fixed with the first circuit board, and the second welding part is welded and fixed with the second circuit board. By means of the mode, the area of the first circuit board or the second circuit board covered by the connecting piece can be reduced, and wiring design of the circuit boards is facilitated.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of inverters, and in particular to a circuit board assembly and an inverter. Background Art

[0002] For a circuit board group with multiple circuit boards, it is usually necessary to splice and fix the multiple circuit boards. Currently, two circuit boards are generally fixed by screws and connecting plates. Specifically, a connecting plate is set between the two circuit boards, one end of the connecting plate is screwed and fixed to one of the circuit boards by a screw, and the other end of the connecting plate is screwed and fixed to the other circuit board by a screw, thereby achieving splicing and fixation between the two circuit boards.

[0003] During the implementation of the embodiments of the present utility model, the inventors discovered that: since it is necessary to ensure the stability of the fixation between the two circuit boards, the connecting pieces are generally made of metal and fixed with screws. The connecting pieces need to be stacked on the circuit boards, resulting in the inability to route circuits in the area covered by the connecting pieces, which is not conducive to the circuit design of the circuit boards. Utility Model Content

[0004] The main technical problem solved by the embodiments of the present utility model is to provide a circuit board group and an inverter. Compared with the method of using screws to splice and fix two circuit boards, the area covered by the connecting piece on the first circuit board and the second circuit board can be reduced, thereby facilitating the wiring design of the circuit boards.

[0005] To solve the above technical problems, a technical solution adopted in an embodiment of the present invention is as follows: providing a circuit board assembly, comprising a first circuit board, a second circuit board and a connecting piece, wherein the first circuit board is provided with a first connecting portion; the second circuit board is provided with a second connecting portion, the first connecting portion and the second connecting portion are plugged into and matched with each other, and the first connecting portion and the second connecting portion are electrically connected; the connecting piece comprises a plate body, a first welding portion and a second welding portion, the first welding portion is provided on a first side wall of the plate body, the second welding portion is provided on a second side wall of the plate body, the first side wall and the second side wall are adjacently arranged, the first welding portion is welded and fixed to the first circuit board, and the second welding portion is welded and fixed to the second circuit board. In this embodiment, by providing the first welding portion on the first side wall of the plate body and the second welding portion on the second side wall of the plate body, and the first side wall and the second side wall are adjacently arranged, the first welding portion is fixed to the first circuit board and the second welding portion is fixed to the second circuit board. Compared with the prior art method of splicing and fixing two circuit boards using screws and connecting pieces, the connecting piece in the present application occupies a smaller area of ​​the circuit board, thereby facilitating the wiring design of the circuit boards.

[0006] In some embodiments, the first circuit board is provided with a first soldering hole, the first soldering portion is provided through the first soldering hole, and the first soldering portion is welded and fixed to the first circuit board; and / or the second circuit board is provided with a second soldering hole, the second soldering portion is provided through the second soldering hole, and the second soldering portion is welded and fixed to the second circuit board. In this embodiment, by providing soldering holes, passing the soldering portion through the soldering holes and then welding and fixing it to the circuit board, the connection strength between the soldering portion and the circuit board can be improved.

[0007] In some embodiments, there are multiple first soldering portions, each of which is spaced apart on the first sidewall and is welded and fixed to the first circuit board; and / or there are multiple second soldering portions, each of which is spaced apart on the second sidewall and is welded and fixed to the second circuit board. In this embodiment, by providing multiple soldering portions for soldering and fixing to the circuit board, the stability of the connection between the connecting piece and the circuit board can be improved.

[0008] In some embodiments, there are multiple connecting pieces, each spaced apart along a first direction, with the first soldering portion of each connecting piece being fixed to the first circuit board, and the second soldering portion of each connecting piece being fixed to the second circuit board. The first direction is parallel to the first side wall and the second side wall, with the first side wall facing the first circuit board and the second side wall facing the second circuit board. In this embodiment, by providing multiple connecting pieces, each of the connecting pieces is fixed to the first circuit board and the second circuit board, thereby improving the stability of the fixation between the first circuit board and the second circuit board.

[0009] To address the aforementioned technical issues, another technical solution employed in an embodiment of the present invention is to provide an inverter comprising a bottom case, a top cover, and the aforementioned circuit board assembly. The bottom case is provided with a receiving cavity, in which the circuit board assembly is housed. The top cover is removably mounted to the bottom case and covers the receiving cavity. In this embodiment, the circuit board assembly is protected by placing the circuit board assembly within the receiving cavity and covering the cavity with the top cover.

[0010] In some embodiments, the bottom shell is provided with at least one ventilation hole, which connects the accommodating cavity with the outside world. By providing the ventilation hole, outside air can enter the accommodating cavity through the ventilation hole, which can facilitate heat dissipation of the circuit board assembly or other components in the accommodating cavity.

[0011] In some embodiments, the bottom housing is provided with a mounting slot, with both ends of the vent opening communicating with the accommodating cavity and the mounting slot, respectively. The inverter includes a protective cover that covers the end of the mounting slot distal to the vent opening. The protective cover is provided with multiple through-holes, and the protective cover is spaced from the vent opening so that the through-holes communicate with the vent opening through the mounting slot. In this embodiment, the protective cover acts as a filter, filtering at least some dust, flying insects, ants, and the like from entering the accommodating cavity, thereby protecting the circuit board assembly or other components within the accommodating cavity. Furthermore, the protective cover can be removed for easy cleaning and replacement.

[0012] In some embodiments, the top cover includes a first cover body and a second cover body, both of which are detachably mounted to the bottom shell, and the first cover body and the second cover body together cover the accommodating cavity. In this embodiment, by dividing the top cover into the first cover body and the second cover body, when it is necessary to inspect and repair components within the accommodating cavity, the corresponding cover body can be opened based on the location of the component to be inspected, without having to open the entire top cover, which is very convenient.

[0013] In some embodiments, one of the first cover and the second cover is provided with an inserting portion, and the other is provided with an inserting hole, and the inserting portion is inserted into the inserting hole to achieve positioning between the first cover and the second cover. In this embodiment, by inserting the inserting portion into the inserting hole, positioning between the first cover and the second cover is achieved, facilitating the installation and fixation of the second cover.

[0014] In some embodiments, the inverter further includes a communication board housed within the housing cavity, electrically connected to the circuit board assembly, and configured to establish communication connections with other devices. In this embodiment, establishing communication connections with other devices via the communication board enables the inverter to operate in conjunction with the other devices.

[0015] The beneficial effects of the embodiments of the present invention are as follows: different from the prior art, in the embodiments of the present invention, a first connecting portion is provided on the first circuit board and a second connecting portion is provided on the second circuit board, the first connecting portion and the second connecting portion are plugged into and matched with each other and the two are electrically connected, thereby realizing an electrical connection between the first circuit board and the second circuit board; the connecting piece includes a board body, a first welding portion and a second welding portion, and the first welding portion is provided on the first side wall of the board body and the second welding portion is provided on the second side wall of the board body, and the first side wall and the second side wall are provided adjacent to each other, the first welding portion is fixed to the first circuit board and the second welding portion is fixed to the second circuit board, thereby realizing splicing and fixing between the first circuit board and the second circuit board. Compared with the method of splicing and fixing two circuit boards by using screws and connecting pieces in the prior art, the connecting piece in the present application occupies a smaller area of ​​the circuit board, thereby facilitating the wiring design of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic structural diagram of a circuit board assembly provided in an embodiment of the present utility model;

[0018] Figure 2 It is a structural schematic diagram of the connecting piece provided in an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the circuit board assembly provided in an embodiment of the present utility model;

[0020] Figure 4 yes Figure 3 Magnified view of the area shown in part A;

[0021] Figure 5 It is a structural diagram of the inverter provided in an embodiment of the present utility model;

[0022] Figure 6 Schematic diagram of the exploded structure of the inverter provided in the embodiment of the present utility model;

[0023] Figure 7 yes Figure 6 Enlarged view of the area shown in part B;

[0024] Figure 8 yes Figure 6 Magnified view of the area shown in part B.

[0025] Figure Numbers

[0026]

[0027] DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "inside", "outside", "vertical", "horizontal", etc. used in this specification indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in this specification are intended only to describe specific embodiments and are not intended to limit the present invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0030] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] As inverters become more powerful, their internal circuit boards are becoming increasingly complex, with an increasing number of electronic components. This makes circuit board routing design increasingly challenging. To address this issue, many inverter circuit boards are designed and manufactured as modules, with each module placed on a separate circuit board. These modules are then joined and fixed together to form a circuit board assembly.

[0032] In the prior art, two circuit boards are spliced ​​and fixed using screws and connecting pieces. Specifically, one end of the connecting piece is screwed to one circuit board, and the other end is screwed to the other circuit board, thereby achieving splicing and fixing the two circuit boards. The connecting piece is usually made of metal to ensure the stability of the fixation between the two circuit boards. However, this method results in the connecting piece and screws occupying a large area of ​​the circuit board. The circuit board routing needs to avoid the area covered by the connecting piece or screws, which is not conducive to the circuit board routing design.

[0033] In order to solve the above problems, the present application provides a circuit board group and an inverter, by setting a first welding part and a second welding part on the connecting piece, the first welding part is welded and fixed to the first circuit board, and the second welding part is welded and fixed to the second circuit board, thereby realizing splicing and fixing between the first circuit board and the second circuit board. Compared with the fixing method using screws and connecting pieces, the area of ​​the circuit board occupied by the connecting piece can be reduced, which is conducive to the routing design of the circuit board.

[0034] The specific structure and functions of this application are described in detail below.

[0035] See also Figure 1 、 Figure 2 and Figure 3 The circuit board assembly 1 includes a first circuit board 11, a second circuit board 12, and a connecting piece 13. The first circuit board 11 is provided with a first connecting portion 111, and the second circuit board 12 is provided with a second connecting portion 121. The first connecting portion 111 and the second connecting portion 121 are plugged together to form an electrical connection, thereby achieving an electrical connection between the first circuit board 11 and the second circuit board 12. Figure 2 The connecting piece 13 includes a plate body 131, a first welding portion 132 and a second welding portion 133. The plate body 131 has a first side wall 1311 and a second side wall 1312 arranged adjacent to each other. The first welding portion 132 is arranged on the first side wall 1311, and the second welding portion 133 is arranged on the second side wall 1312. The first welding portion 132 is welded and fixed to the first circuit board 11, and the second welding portion 133 is welded and fixed to the second circuit board 12, thereby realizing the splicing and fixation between the first circuit board 11 and the second circuit board 12. In this embodiment, by arranging the first welding portion 132 on the first side wall 1311 of the plate body 131, and arranging the second welding portion 133 on the second side wall 1312 of the plate body 131, and the first side wall 1311 and the second side wall 1312 are arranged adjacent to each other, the first welding portion 132 is fixed to the first circuit board 11, and the second welding portion 133 is fixed to the second circuit board 12. Compared with the method of splicing and fixing two circuit boards using screws and connecting pieces in the prior art, the connecting piece 13 in this application occupies a smaller area of ​​the circuit board, thereby facilitating the wiring design of the circuit board; in addition, by plugging and matching the first connecting portion 111 and the second connecting portion 121, while realizing the electrical connection between the first circuit board 11 and the second circuit board 12, the stability of the fixation between the first circuit board 11 and the second circuit board 12 can also be improved.

[0036] In some embodiments, the first circuit board 11 is a power board, and the second circuit board 12 is a control board. It is understood that in other embodiments, the first circuit board 11 may also be a control board, and the second circuit board 12 may be a power board.

[0037] In some embodiments, one of the first connection portion 111 and the second connection portion 121 is a female socket, and the other is a male end, and the male end is plugged into the female socket to achieve electrical connection between the first connection portion 111 and the second connection portion 121 .

[0038] In some embodiments, please refer to Figure 1 and Figure 2 The first side wall 1311 and the second side wall 1312 are perpendicular, and the first circuit board 11 is parallel to the first side wall 1311, and the second circuit board 12 is parallel to the second side wall 1312, thereby making the first circuit board 11 and the second circuit board 12 perpendicular. For such a design, please refer to Figure 6 When the circuit board assembly 1 is installed in the bottom shell 2, the first circuit board 11 can be arranged parallel to the bottom plate 22, and the second circuit board 12 can be arranged close to and parallel to the side plate, so that the space inside the bottom shell 2 can be well utilized, which is conducive to saving space inside the bottom shell 2.

[0039] In some embodiments, see Figure 3 and Figure 4 The first circuit board 11 is provided with a first welding hole 112, which passes through the first circuit board 11. The first welding portion 132 passes through the first welding hole 112 and is then welded to the first circuit board 11. In this embodiment, by passing the first welding portion 132 through the first welding hole 112 and then welding it to the first circuit board 11, compared to directly welding the first welding portion 132 to one surface of the first circuit board 11, the welding material can fill the gap between the first welding portion 132 and the first welding hole 112, thereby increasing the welding area and improving the connection strength between the first welding portion 132 and the first circuit board 11.

[0040] In some embodiments, see Figure 3 and Figure 4The second circuit board 12 is provided with a second welding hole 122, which passes through the second circuit board 12. The second welding portion 133 passes through the second welding hole 122 and is then welded to the second circuit board 12. In this embodiment, by passing the second welding portion 133 through the second welding hole 122 and then welding it to the second circuit board 12, compared to the case of directly welding the second welding portion 133 to one surface of the second circuit board 12, the welding material can fill the gap between the second welding portion 133 and the second welding hole 122, thereby increasing the welding area and improving the connection strength between the second welding portion 133 and the second circuit board 12. It is worth noting that in the present application, the first welding hole 112 can be provided only on the first circuit board 11, or the second welding hole 122 can be provided only on the second circuit board 12, or the first welding hole 112 can be provided on the first circuit board 11 and the second welding hole 122 can be provided on the second circuit board 12. This is not specifically limited in this application.

[0041] In some embodiments, see Figure 2 and Figure 3 There are multiple first soldering portions 132, each of which is spaced apart on the first sidewall 1311. The first circuit board 11 is provided with multiple first soldering holes 112, each of which corresponds to each of the first soldering portions 132. A first soldering portion 132 is passed through a first soldering hole 112 and is then soldered and secured to the first circuit board 11. In this embodiment, by providing multiple first soldering portions 132, each of which is soldered and secured to the first circuit board 11, the stability of the fixation between the first circuit board 11 and the connecting piece 13 can be improved.

[0042] In some embodiments, see Figure 2 、 Figure 3 and Figure 4 , there are multiple second welding portions 133, and the multiple second welding portions 133 are spaced apart on the second side wall 1312. The second circuit board 12 is provided with multiple second welding holes 122, and the multiple second welding holes 122 correspond to the multiple second welding portions 133 one-to-one. A second welding portion 133 is welded and fixed to the second circuit board 12 after passing through a second welding hole 122. In this embodiment, by providing multiple second welding portions 133, the multiple second welding portions 133 are all welded and fixed to the second circuit board 12, which can improve the stability of the fixation between the second circuit board 12 and the connecting piece 13. It is worth noting that the number of the first welding portions 132 and the second welding portions 133 can be the same or different, and this application does not limit this.

[0043] In some embodiments, see Figure 1 、 Figure 2 and Figure 3There are multiple connecting pieces 13, and the multiple connecting pieces 13 are spaced apart along a first direction X. The first direction X is parallel to the first side wall 1311 and the second side wall 1312. The first side wall 1311 faces the first circuit board 11, and the second side wall 1312 faces the second circuit board 12. The first welding portion 132 of each connecting piece 13 is welded and fixed to the first circuit board 11, and the second welding portion 133 of each connecting piece 13 is welded and fixed to the second circuit board 12. In this embodiment, by providing multiple connecting pieces 13, the stability of the fixation between the first circuit board 11 and the second circuit board 12 can be improved.

[0044] In the embodiment of the present utility model, a first connecting portion 111 is provided on the first circuit board 11, and a second connecting portion 121 is provided on the second circuit board 12. The first connecting portion 111 and the second connecting portion 121 are plugged into each other, and the first connecting portion 111 and the second connecting portion 121 are electrically connected to achieve electrical connection between the first circuit board 11 and the second circuit board 12; the connecting piece 13 includes a plate body 131, a first welding portion 132 and a second welding portion 133. By setting the first welding portion 132 on the first side wall 1311 of the plate body 131, the second welding portion 133 is connected to the first side wall 1311 of the plate body 131. The connecting portion 133 is arranged on the second side wall 1312 of the plate body 131, and the first side wall 1311 and the second side wall 1312 are arranged adjacent to each other. The first welding portion 132 is fixed to the first circuit board 11, and the second welding portion 133 is fixed to the second circuit board 12, thereby realizing the splicing and fixation between the first circuit board 11 and the second circuit board 12. Compared with the method of splicing and fixing two circuit boards with screws and connecting plates in the prior art, the connecting plate 13 in the present application occupies a smaller area of ​​the circuit board, which can facilitate the wiring design of the circuit board.

[0045] The present invention also provides an embodiment of an inverter 100, see Figure 5 and Figure 6 Inverter 100 includes a bottom case 2, a top cover 3, and the aforementioned circuit board assembly 1. The bottom case 2 is provided with a receiving cavity 21, within which the circuit board assembly 1 is housed and secured. The top cover 3 is removably mounted to the bottom case 2 and covers the receiving cavity 21, thereby protecting the circuit board assembly 1 within the bottom case 2.

[0046] In some embodiments, see Figure 6The bottom shell 2 includes a bottom plate 22, two first side plates 23, and two second side plates 24. The bottom plate 22 is generally square in shape, and the two first side plates 23 and the two second side plates 24 extend from the edges of the bottom plate 22 in a direction perpendicular to the bottom plate 22. The two first side plates 23 are arranged opposite to each other along the second direction Y, and the two second side plates 24 are arranged opposite to each other along the first direction X, so that the bottom plate 22, the two first side plates 23, and the two second side plates 24 together enclose the aforementioned accommodating cavity 21. The top cover 3 is detachably mounted on one end of the two first side plates 23 and the two second side plates 24 away from the bottom plate 22, thereby covering the accommodating cavity 21. The first circuit board 11 is fixed to the bottom plate 22, and the first circuit board 11 is roughly parallel to the bottom plate 22, and the second circuit board 12 is roughly parallel to the first side plate 23, and the second circuit board 12 is located at one end of the first circuit board 11 close to one of the first side plates 23, thereby saving space in the accommodating cavity 21; in addition, the second circuit board 12 is located at the edge of the first circuit board 11, which can reduce the impact of the second circuit board 12 on the routing of the first circuit board 11, thereby facilitating the routing design of the first circuit board 11.

[0047] In some embodiments, see Figure 6 and Figure 7 At least one ventilation hole 231 is provided on the first side plate 23, and the ventilation hole 231 connects the accommodating cavity 21 with the outside so that outside air can enter the accommodating cavity 21 through the ventilation hole 231, so as to dissipate heat for the circuit board group 1 or other components in the accommodating cavity 21.

[0048] Furthermore, when there are multiple ventilation holes 231 , the multiple ventilation holes 231 may be distributed in a mesh shape on the first side plate 23 .

[0049] In some embodiments, both first side panels 23 are provided with the aforementioned ventilation holes 231, thereby providing multiple channels for outside air to enter the accommodating chamber 21, which is beneficial for improving the heat dissipation efficiency of the circuit board assembly 1 or other components within the accommodating chamber 21. It is understood that in other embodiments, not shown in the figures, ventilation holes 231 may be provided on only one first side panel 23, or on the second side panel 24, or on both the first side panel 23 and the second side panel 24, which can also achieve gas exchange between the accommodating chamber 21 and the outside world, thereby achieving the effect of heat dissipation of the circuit board assembly 1 or other components within the accommodating chamber 21.

[0050] In some embodiments, see Figure 6 and Figure 7The surface of the first side plate 23 facing away from the accommodating cavity 21 is provided with a mounting groove 232, and both ends of all the ventilation holes 231 respectively connect the accommodating cavity 21 and the mounting groove 232. The inverter 100 also includes a protective cover 4, which is installed on the surface of the first side plate 23 facing away from the accommodating cavity 21, and the protective cover 4 covers one end of the mounting groove 232 facing away from the ventilation holes 231. The protective cover 4 is provided with a plurality of through holes 41, and the protective cover 4 is spaced apart from the plurality of through holes 231. The plurality of through holes 41 are all connected to the mounting groove 232, and the plurality of through holes 41 are also connected to the outside world, so that the outside air can pass through the through holes 41, the mounting groove 232 and the ventilation holes 231 in sequence and then enter the accommodating cavity 21, thereby dissipating the heat of the circuit board group 1 or other components in the accommodating cavity 21. In the present application, by setting up a protective cover 4, the protective cover 4 can play a filtering role. The protective cover 4 can block at least part of the external dust, flying insects, ants, etc. from entering the accommodating cavity 21, thereby protecting the circuit board group 1 or other components in the accommodating cavity 21.

[0051] In some embodiments, the protective cover 4 is detachably mounted on the first side plate 23 . Therefore, when dust accumulates on the protective cover 4 , the protective cover 4 can be removed for cleaning.

[0052] In some embodiments, see Figure 6 The inverter 100 further includes a communication board 5, which is housed in the accommodating cavity 21. The communication board 5 is electrically connected to the circuit board assembly 1. The communication board 5 is also configured to establish a communication connection with other devices (not shown). The communication board 5 establishes a communication connection with other devices in ways including but not limited to cables, Bluetooth, networks, etc., so that the inverter 100 can cooperate with other devices to operate.

[0053] In some embodiments, the inverter 100 also includes a wire group 7, which includes multiple wires, some of which are used to connect the communication board 5 and the circuit board group 1, and some of which are used to pass through one of the second side panels 24 in the bottom shell 2 and extend to the outside world, thereby connecting with other devices.

[0054] Further, see Figure 6 and Figure 8 The second side plate 24 is provided with a threading hole 241 , through which the wire can extend to the outside.

[0055] In some embodiments, the inverter 100 further includes a protective coil 8, which is made of plastic material. The protective coil 8 is clamped in the wire hole 241 on the second side plate 24, and the wire passes through the inside of the protective coil 8 to reduce the risk of the wire being scratched by the second side plate 24, thereby reducing the risk of short circuit between the wires.

[0056] For the above mentioned top cover 3, see Figure 5 and Figure 6The top cover 3 includes a first cover body 31 and a second cover body 32. Both the first cover body 31 and the second cover body 32 are detachably mounted on the bottom shell 2, and the first cover body 31 and the second cover body 32 together cover the accommodating cavity 21. In this embodiment, by dividing the top cover 3 into the first cover body 31 and the second cover body 32, when it is necessary to inspect and repair the components in the accommodating cavity 21, the corresponding cover body can be opened according to the location of the component to be inspected, without having to open the entire top cover 3, which is very convenient.

[0057] Further, see Figure 6 The inverter 100 further includes a separator 6, which is disposed within the accommodating chamber 21 and between the two second side panels 24. The separator 6 divides the accommodating chamber 21 into a first cavity 211 and a second cavity 212. The circuit board assembly 1 is accommodated within the first cavity 211, and the communication board 5 is accommodated within the second cavity 212. The aforementioned threading hole 241 is disposed on a second side panel 24 adjacent to the second cavity 212. The first cover 31 covers the first cavity 211, and the second cover 32 covers the second cavity 212. Therefore, when the circuit board assembly 1 needs to be inspected and repaired, only the first cover 31 needs to be opened. Alternatively, when the communication board 5 needs to be repaired, only the second cover 32 needs to be opened, without having to open the entire top cover 3, which is very convenient. In addition, when assembling the inverter 100, in order to avoid damage caused by touching the circuit board group 1 during the wiring process, the wiring operation needs to be performed in the second cavity 212. Therefore, when wiring the wires, it is only necessary to open the second cover 32, and there is no need to open the entire top cover 3. The operation is convenient and can protect the circuit board group 1 to avoid damage caused by accidental collision with the circuit board group 1.

[0058] In some embodiments, see Figure 6 One of the first cover body 31 and the second cover body 32 is provided with a plug-in portion 321, and the other is provided with a plug-in hole 311. The plug-in portion 321 is plugged into the plug-in hole 311, thereby realizing the positioning between the first cover body 31 and the second cover body 32, facilitating the installation and fixation of the second cover body 32; in addition, it can also reduce the arch or dislocation of the first cover body 31 relative to the second cover body 32 in the third direction Z, thereby improving the aesthetics of the inverter 100, wherein the third direction Z is perpendicular to the second cover body 32.

[0059] Further, see Figure 6 The aforementioned plug-in portion 321 is disposed on the side of the second cover 32 facing the first cover 31, and the plug-in hole 311 is disposed on the side of the first cover 31 facing the second cover 32. It is understood that in other embodiments, not shown, the aforementioned plug-in portion 321 may also be disposed on the side of the first cover 31 facing the second cover 32, and the plug-in hole 311 may be disposed on the side of the second cover 32 facing the first cover 31.

[0060] In some embodiments, see Figure 6 The inverter 100 further includes a display screen 9, which is electrically connected to the circuit board assembly 1 and the communication board 5. The first cover 31 is provided with a mounting opening 312, and the display screen 9 is mounted on the first cover 31, and the screen of the display screen 9 is exposed to the mounting opening 312 for human-computer interaction.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A circuit board assembly, characterized in that: include: A first circuit board is provided with a first connecting portion; The second circuit board is provided with a second connecting portion, the first connecting portion and the second connecting portion are plug-fitted and electrically connected; The connecting piece includes a plate body, a first welding portion and a second welding portion, wherein the first welding portion is arranged on the first side wall of the plate body, and the second welding portion is arranged on the second side wall of the plate body. The first side wall and the second side wall are arranged adjacent to each other, the first welding portion is welded and fixed to the first circuit board, and the second welding portion is welded and fixed to the second circuit board.

2. The circuit board assembly according to claim 1, wherein: The first circuit board is provided with a first welding hole, the first welding portion is passed through the first welding hole, and the first welding portion is welded and fixed to the first circuit board; and / or The second circuit board is provided with a second welding hole, the second welding portion is passed through the second welding hole, and the second welding portion is fixed to the second circuit board by welding.

3. The circuit board assembly according to claim 1, wherein: There are multiple first welding parts, and the multiple first welding parts are spaced apart and arranged on the first side wall. The multiple first welding parts are all welded and fixed to the first circuit board; and / or There are multiple second welding portions, and the multiple second welding portions are spaced apart on the second side wall. The multiple second welding portions are all welded and fixed to the second circuit board.

4. The circuit board assembly according to claim 1, wherein: There are multiple connecting pieces, and the multiple connecting pieces are spaced apart along the first direction. The first welding portion of each connecting piece is fixed to the first circuit board, and the second welding portion of each connecting piece is fixed to the second circuit board. The first direction is parallel to the first side wall and the second side wall, the first side wall faces the first circuit board, and the second side wall faces the second circuit board.

5. An inverter, characterized in that: The invention comprises a bottom shell, a top cover and the circuit board group according to any one of claims 1 to 4, wherein the bottom shell is provided with a receiving cavity, the circuit board group is received in the receiving cavity, the top cover is detachably mounted on the bottom shell, and the top cover covers the receiving cavity.

6. The inverter according to claim 5, characterized in that The bottom shell is provided with at least one ventilation hole, and the ventilation hole connects the accommodating cavity with the outside.

7. The inverter according to claim 6, characterized in that: The bottom shell is provided with a mounting groove, and the two ends of the ventilation hole are respectively connected to the accommodating cavity and the mounting groove; The inverter includes a protective cover, which covers an end of the mounting slot away from the ventilation hole. The protective cover is provided with a plurality of through holes, and the protective cover is spaced apart from the ventilation holes so that the through holes are connected to the ventilation hole through the mounting slot.

8. The inverter according to claim 5, characterized in that: The top cover includes a first cover body and a second cover body. The first cover body and the second cover body can be detachably mounted on the bottom shell, and the first cover body and the second cover body jointly cover the accommodating cavity.

9. The inverter according to claim 8, characterized in that: One of the first cover body and the second cover body is provided with an inserting portion, and the other is provided with an inserting hole. The inserting portion is inserted into the inserting hole to achieve positioning between the first cover body and the second cover body.

10. The inverter according to claim 8, characterized in that The inverter further includes a communication board, which is accommodated in the accommodating cavity. The communication board is electrically connected to the circuit board assembly and is further configured to establish a communication connection with other devices.

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