CN107529323B

CN107529323B - Electric control box

Info

Publication number: CN107529323B
Application number: CN201710817191.4A
Authority: CN
Inventors: 樊超; 江金源; 黄福豪; 梁荣鑫; 王健; 张羽; 尤英帅; 邹加富
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-09-12
Filing date: 2017-09-12
Publication date: 2021-12-17
Anticipated expiration: 2037-09-12
Also published as: CN107529323A

Abstract

The invention discloses an electric cabinet, relates to the field of electric control equipment, and aims to improve the heat dissipation performance of the existing electric cabinet. The electric cabinet comprises a cabinet body, wherein a plurality of surfaces inside and outside the cabinet body are provided with radiating fins. According to the electric cabinet provided by the technical scheme, the arrangement positions of the radiating fins are arranged on the surfaces of the electric cabinet, so that the radiating performance of the electric cabinet is better, and the radiating requirement of electrical components in the electric cabinet can be met on the premise of not using a fan.

Description

Electric control box

Technical Field

The invention relates to the field of electric control equipment, in particular to an electric control box.

Background

The electric cabinet is used for installing electrical components and is of a cabinet body structure. In the prior art, the electric cabinet comprises a sheet metal part (or an integral sheet metal injection molding part) and a radiator which are assembled together through mechanical connection.

The inventor finds that at least the following problems exist in the prior art: the existing electric cabinet has the defects of complex structural process, high cost, poor heat dissipation performance and poor grounding performance due to mechanical connection between the radiator and the sheet metal part.

Disclosure of Invention

One of the purposes of the invention is to provide an electric cabinet, which is used for improving the heat dissipation performance of the existing electric cabinet.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides an electric cabinet which comprises a cabinet body, wherein a plurality of surfaces inside and outside the cabinet body are provided with radiating fins.

In alternative embodiments, the heat sink fins are selected from one or more of the following: tree fins and rib fins.

In an alternative embodiment, the heat radiating fins are integrally extruded with the case body.

In an alternative embodiment, the tree fin includes a trunk portion having a root connected to the box body and a branch portion connected to the trunk portion.

In alternative embodiments, the branch portion includes two or more layers.

In an alternative embodiment, the tree fin further comprises a top portion connected to the tip of the trunk portion, the top portion having a plane with a size larger than the tip of the trunk portion.

In an alternative embodiment, said tree fin is plural, said top of each said tree fin being flush.

In an alternative embodiment, the tree fins are formed in rows on an outer surface of the box body.

In an alternative embodiment, the rib-type fins are formed in rows on the inner and/or outer surface of the tank body.

In an alternative embodiment, the case body includes a U-shaped body including a bottom and sides and a case cover attached to the sides of the U-shaped body.

In an alternative embodiment, the heat dissipation fins are located on the outer surface of the bottom of the U-shaped body and are integrally extruded with the U-shaped body.

In an alternative embodiment, the heat dissipation fins are also formed on the outer surface of the case cover and are integrally extruded with the case cover.

In an alternative embodiment, the heat dissipation fins include tree-shaped fins and rib-shaped fins; the tree-shaped fins are formed on the outer surface of the bottom of the U-shaped body, and the rib-shaped fins are formed on the inner surface and the outer surface of the side part and the outer surface of the box cover.

In an optional embodiment, the tree-shaped fins are multiple in number, the tree-shaped fins located at the edges are provided with concave parts, the concave parts can be spliced with concave parts corresponding to the other electric control boxes to form concave grooves for penetrating guide rails, and the two electric control boxes can be connected together side by side through the guide rails.

In an alternative embodiment, the tree-shaped fins are multiple in number, and the tree-shaped fins at the edges are provided with mounting structures through which the electric cabinet can be mounted together with the ground or other components.

In an alternative embodiment, at least one of said ribbed fins on the inner surface of said side portion is provided with a female structure capable of coupling with a coupling member by which the two U-shaped bodies can be coupled together.

In an alternative embodiment, the cross-section of the concave structure is C-shaped.

In an alternative embodiment, at least one of the ribbed fins located on the inner surface of the side portion has a connecting portion for retaining a separator.

In an alternative embodiment, the connecting portion comprises a groove and a protrusion.

In an alternative embodiment, the heat dissipating fins include primary heat dissipating fins and secondary heat dissipating fins, which are formed on different surfaces of the case body.

In an alternative embodiment, the primary heat dissipation fins comprise tree-shaped fins integrally formed on the outer surface of the case body.

In an alternative embodiment, the auxiliary radiating fins include rib-type fins integrally formed on the outer or inner surface of the tank body.

In an alternative embodiment, the auxiliary heat dissipating fins further include rib-type fins integrally formed on an outer surface of the case cover.

In an alternative embodiment, the tank body is of a thermally conductive material.

In an alternative embodiment, the cross section of the electric cabinet is rectangular, and the ratio of the width to the length is golden ratio.

In an alternative embodiment, the electrical cabinet is a fanless structure.

Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:

according to the electric cabinet provided by the technical scheme, the radiating fins are arranged on the inner surface and the outer surface of the cabinet body, and the radiating fins can be arranged as many as possible, so that the radiating area of the electric cabinet is maximized, the improvement of the heat dissipation of the electric cabinet is facilitated, the heat dissipation of the electric cabinet under the condition without a fan is realized, and the noise of equipment to which the electric cabinet belongs can be reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic cross-sectional structure view of an electric cabinet according to an embodiment of the present invention;

fig. 2 is a schematic partial structural diagram of two electric cabinets connected together according to an embodiment of the present invention;

FIG. 3 is a schematic view of a partial structure of a U-shaped body of an electric cabinet according to an embodiment of the present invention;

FIG. 4 is a diagram labeled with various parameters of a tree-shaped fin.

Reference numerals: 1. a tank body; 2. a heat dissipating fin; 11. a U-shaped body; 12. a box cover; 21. a tree-shaped fin; 22. a rib-shaped fin; 211. a trunk portion; 212. a branch part; 213. a top portion; 214. a mounting structure; 215. an inner concave portion; 221. a first ribbed fin; 222. a second ribbed fin; 223. a concave structure; 224. a groove; 225. a raised portion.

Detailed Description

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 4.

The embodiment of the invention provides an electric cabinet which comprises a cabinet body 1, wherein a plurality of surfaces inside and outside the cabinet body 1 are provided with radiating fins 2.

The tank body 1 includes an inner surface and an outer surface, and a plurality of the inner surface and the outer surface are provided with heat dissipation fins 2.

This 1 of case can be in the face that can set up radiating fin 2 as much as possible setting radiating fin 2, can be favorable to improving the heat dissipation of electric cabinet with heat radiating area maximize like this, realizes its heat dissipation under the fan-free prerequisite, and can reduce the noise of the affiliated equipment of electric cabinet.

Referring to fig. 1, in the present embodiment, an electric cabinet structure having the following structure is taken as an example of the cabinet body 1, and the electric cabinet is substantially rectangular as a whole. The electric cabinet comprises a U-shaped body 11 and a lid 12, the lid 12 being substantially flat, the U-shaped body 11 being shown in fig. 3, the U-shaped body 11 comprising side portions and a bottom portion defining three openings, two of which are opposite, and two end plates being provided at the two opposite openings. The third opening is used for arranging a cover 12, see fig. 1, which cover 12 is arranged at the free end of the two side parts.

In this embodiment, all the heat dissipating fins 2 on the U-shaped body 11 are integrally formed by extrusion with the U-shaped body 11, and the heat dissipating fins 2 on the case cover 12 are integrally formed by extrusion with the case cover 12.

Optionally, the cross section of the electric cabinet is rectangular, and the ratio of the width to the length is golden ratio.

The cross section size of electric cabinet designs according to the golden proportion, but case body 1 and radiating fin 2 of electric cabinet integrative extrusion, and the processing property is good, and all radiating fin 2 integrated into one piece, simple process, low cost, and grounding performance is splendid.

The heat dissipating fins 2 may have various structures, and the tree-shaped fins 21 and the rib-shaped fins 22 are used as an example in the present embodiment.

The tree fin 21 may have various structural forms, such as: the tree is formed by a trunk and single-layer or multi-layer branches, the branches can be arc-shaped and linear, and the branches on the same layer do not intersect. The curved direction of each branch can be the same or opposite if the branches are curved. The structure of the tree fin 21 used in the present embodiment will be described in detail later.

The rib-type fin 22 is a fin having a strip-like cross section. This rib type fin 22 also can increase heat radiating area, and rib type fin 22's structure is regular, does benefit to the range, the placing of whole electric cabinet.

The radiating fins 2 with different structures can be arranged according to the characteristics of the electric cabinet, the positions of the radiating fins 2 can be the inner surface or the outer surface of the electric cabinet, the radiating fins 2 can also be arranged on the inner surface and the outer surface simultaneously, and all the radiating fins 2 are mutually matched to play a better radiating effect. Above-mentioned technical scheme can improve the position that sets up of electric cabinet radiating fin 2 for the heat dispersion of electric cabinet is better, can satisfy the heat dissipation requirement of electrical components in the electric cabinet under the prerequisite that does not use the fan, realizes that the electric cabinet is no fan structure.

Referring to fig. 1, the bottom surface of the box body 1 is provided with tree-shaped fins 21, and the side surface of the box body 1 is provided with rib-shaped fins 22.

Referring to fig. 1 and 3, the outer surface of the bottom of the U-shaped body 11 is provided with tree-shaped fins 21.

The tree-shaped fins 21 correspond to the largest heat dissipation surface of the box body 11, the heat dissipation area of the tree-shaped fins 21 is large, and the heat dissipation effect of the electric cabinet can be effectively improved due to the arrangement.

The specific structure of the tree-shaped fin 21 will be described.

Referring to fig. 1, the tree fin 21 includes a trunk portion 211 and branch portions 212, the root of the trunk portion 211 being connected to the box body 1, the branch portions 212 being connected to the trunk portion 211.

Fig. 1 shows a case where a single-stage, multi-layer branch portion 212 is provided, and a plurality of branch portions 212 are formed on each trunk portion 211, and these branch portions 212 are all first-stage branch portions. It will be appreciated that the branches 212 may be arranged in multiple levels, such as second, third, or even more levels of branches on the branches 212 shown in FIG. 1. When the multi-stage branch portion 212 is provided, the size of the entire tree-shaped fin 21 is larger and the heat radiation area is also larger. The number of the branch layers, the number of the stages and the total height of the tree-shaped fins 21 can be determined according to the heat dissipation area required by the electric cabinet.

In this embodiment, the branch parts 212 include two or more layers, and fig. 1 shows three layers of branch parts 212 on each trunk part 211. Under the unchangeable prerequisite of electric cabinet overall dimension, multilayer branch of trees portion 212 can make heat radiating area bigger, and the radiating effect is better.

In this embodiment, the branches 212 are arcuate.

Referring to fig. 1, in order to make the heat dissipation area larger and to make the electric cabinet easy to place, the tree fin 21 further includes a top portion 213, the top portion 213 is connected to the tip of the trunk portion 211, and the top portion 213 has a plane having a size larger than the tip of the trunk portion 211.

The tree-shaped fins 21 are provided with the tops 213, and the radiating fins 2 outside the electric cabinet are well protected, so that a user is not easily scratched and the radiating fins 2 are not easily damaged. The tree-shaped fin 21 used outside the electric cabinet is provided with a top 213, which is convenient for installing the electric cabinet in various installation modes.

Referring to fig. 1, the tree fins 21 are plural, and the top 213 of each tree fin 21 is flush. The structure is convenient for subsequent arrangement and placement of the electric cabinet.

The structure ensures that the external radiating fins 2 of the electric cabinet are well protected, and the electric cabinet is not easy to scratch a user and damage the radiating fins 2. The tree-shaped fins 21 have larger heat dissipation areas, the tree branch parts 212 at the roots of the fins are more favorable for heat dissipation, the heat dissipation effect of the tree-shaped fins is better than that of the traditional heat dissipation fins 2, and the auxiliary heat dissipation of the additional side heat dissipation fins 2 is greatly improved compared with the heat dissipation performance of the existing electric cabinet. The 360-degree dead-angle-free heat dissipation design of the all-aluminum electric cabinet can be realized. The tree-shaped fins 21 are simple and attractive, and the shape matched with the golden ratio of the whole electric cabinet is more attractive.

Referring to fig. 2, the tree-shaped fins 21 are plural, and the tree-shaped fins 21 are formed in rows on the outer surface of the bottom of the U-shaped body 11, and all the tree-shaped fins 21 can be formed by one-time extrusion molding. The heights of the tree fins 21 are the same. The structure not only enables the whole structure of the electric cabinet to be clean and tidy, has proper proportion, does not have a protruding tip, and can not scratch operators and other parts.

Alternatively, the tree fin 21 is plural, and the top 213 of each tree fin 21 is flush.

Alternatively, the root of the trunk portion 211 is thicker than the tip thereof. The tree-shaped fin 212 of the structure is stable and reliable in structure. Alternatively, the trunk portion 211 is tapered in size from the root to the tip.

Specifically, the distance L between two adjacent tree parts 211 is 10mm-15 mm. Such as 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, etc.

Optionally, the thickness D of the branch portion 212 is 0.6mm-1.2 mm. For example 0.6mm, 0.7mm, 1.0mm, 1.13mm, 1.14mm, 1.2mm, etc.

Optionally, the distance H between two adjacent branch parts 212 is 5mm-7mm, such as 5mm, 6mm, 7 mm.

Referring to fig. 1, tree-shaped fins 21 are formed in rows on the outer surface of the box body 1.

Above-mentioned technical scheme, electric cabinet whole heat dispersion is better than ordinary electric cabinet heat dispersion, and main radiating fin adopts novel tree-shaped fin 21, and side radiating fin 2 and panel radiating fin 2 assist the heat dissipation. The tree fin 21 is composed of a top 213, a branch 212, and a trunk 211. The trunk portion 211 is perpendicular to the surface of the box body 1, and serves as a main trunk of the tree-shaped fin 21 to perform a main heat dissipation task, and the trunk portion 211 is thick to thin from the bottom to the top 213. The branch portion 212 starts to grow from the bottom surface, spreads to both sides, and spreads in a certain arc. The number of layers of the branch parts 212 is determined by the specific situation, the higher the heat dissipation requirement, the higher the number of layers of the branch parts 212 is, and fig. 1 shows a three-layer branch part 212 structure. The top 213 is perpendicular to the stem 211 and parallel to the heat dissipating bottom.

In the present embodiment, the rib-type fins 22 are formed in rows on the inner surface and/or the outer surface of the tank body 1.

The following will be described in detail with reference to the positions of the heat dissipating fins 2 on the box body 1.

Referring to fig. 1, in the present embodiment, the box body 1 includes a U-shaped body 11, and a box cover 12, the box cover 12 is disposed on the U-shaped body 11, and the U-shaped body 11 includes a bottom and a side.

Referring to fig. 1, the heat dissipating fins 2 are located on the outer surface of the bottom of the U-shaped body 11 and are integrally extruded with the U-shaped body 11.

Referring to fig. 1, the heat radiating fins 2 are also formed on the outer surface of the case cover 12 and are integrally press-molded with the case cover 12.

In the present embodiment, the heat radiation fins 2 include tree-shaped fins 21 and rib-shaped fins 22; tree-shaped fins 21 are formed on the outer surface of the bottom of the U-shaped body 11, and rib-shaped fins 22 are formed on the inner and outer surfaces of the side portions and the outer surface of the case cover 12.

Referring to fig. 1 and fig. 2, in order to neatly, firmly arrange a plurality of electric cabinets, tree-shaped fin 21's quantity is a plurality of, and tree-shaped fin 21 that is located the edge is equipped with interior concave part 215, and interior concave part 215 can be pieced together with the interior concave part 215 that another electric cabinet corresponds the position and form the concave groove that is used for alternating the guide rail, can link together two electric cabinets side by side through the guide rail. Through the concave groove, a plurality of independent electric cabinets can be connected together, so that each electric cabinet is not easy to shift, and the stability of the position of the electric cabinet after being placed is ensured. Above-mentioned technical scheme, outside tree-shaped fin 21 can be used to the electric cabinet and transversely assembles, assembles the figure and decide according to the in service behavior, can infinitely assemble.

Referring to fig. 1 and 2, in order to make the connection of the two electric cabinets more stable, the outer surface of the cabinet body 1 is also provided with an inner recess 215. Specifically, the ribbed fins of the outer surface of the sides of the U-shaped body 11 are formed with internal recesses 215. As will be described in more detail below.

The two recesses 215 form, for example, dovetail grooves, the cross section of the rail also being dovetail-shaped, the rail being inserted into the dovetail grooves to connect the two electrical cabinets together.

In some cases, it may be necessary to mount the electric cabinet on the ground or other components, and optionally, referring to fig. 3, in this embodiment, the tree-shaped fins 21 are plural in number, and the tree-shaped fins 21 at the edge are provided with mounting structures 214, so that the electric cabinet can be mounted with the ground or other components through the mounting structures 214.

The mounting structure 214 supports multiple mounting means such as back-hanging mounting, rivet mounting, bolting, and pin-and-socket mounting. The mounting structure 214 may be a hole, recess, or the like. After the installation structure 214 is arranged, when the electric cabinet is installed, parts such as lifting lugs and installation seats do not need to be welded on the electric cabinet. Therefore, the mounting structure 214 is directly formed at the edge of the tree-shaped fin 21, so that the step of welding a lifting lug or a mounting seat before the electric cabinet is mounted in the prior art can be omitted, the mounting process of the electric cabinet is simplified, and the use convenience of the electric cabinet is improved.

For the sake of convenience of distinction, the ribbed fin 22 provided on the inner surface of the U-shaped body 11 is referred to as a first ribbed fin 221, and the ribbed fin 22 provided on the outer surface of the U-shaped body 11 is referred to as a second ribbed fin 222.

Referring to fig. 1 and 3, the first ribbed fin 221 has a size smaller than that of the second ribbed fin 222. Adopt above-mentioned structure setting, can guarantee the radiating effect on the one hand, on the other hand then can guarantee the inside installation space of U-shaped body 11.

Referring to fig. 1, the heights of the second rib-type fins 222 provided on the outer surface of the tank body 1 are the same.

Referring to fig. 1, the first ribbed fins 221 provided on the inner surface of the box body 1 have various heights, and the first ribbed fins 221 are not flush, so that on one hand, the wires are arranged and fixed conveniently, and on the other hand, part of the first ribbed fins 221 can be used as connecting parts with other parts (such as a partition plate and other U-shaped bodies 11). Referring to fig. 1, the portion of the first rib-type fin 221 having an extremely small size is also referred to as a micro fin.

Referring to fig. 1, in the present embodiment, at least one of the first ribbed fins 221 located on the inner surface of the side portion is provided with a concave structure 223 capable of being coupled with a coupling member by which the two U-shaped bodies 11 can be coupled together.

Referring to fig. 1, there is at least one first ribbed fin 221 provided with a female structure 223 able to be coupled with a coupling member by means of which the U-shaped bodies 11 of the two tank bodies 1 can be coupled together. The concave structure 223 is, for example, a thread groove, and the connecting member is, for example, a bolt or the like. So can make the electrical components connecting wire between two electric cabinets all be located inside the electric cabinet, avoid the connecting wire between two electric cabinets to expose, guarantee electrical equipment's safety.

In this embodiment, the cross-section of the concave structure 223 is C-shaped. If two U-shaped bodies 11 are connected by bolts, the concave structure 223 can be formed by integrally forming a groove with a smooth inner wall and then processing an internal thread.

Referring to fig. 1, in order to facilitate layering of the internal space of the electric cabinet and improve the utilization rate of the internal space of the electric cabinet, at least one first rib-shaped fin 221, which is located on the inner surface of the side portion, has a connecting portion for clamping the partition plate. The connection portion may be a groove 224 or a protrusion 225. Referring to fig. 2, in this embodiment, the protrusion 225 is generally H-shaped in cross-section, which is well suited for forming a sliding connection with the partition to facilitate adjustment of the position of the partition.

The heat dissipation function of each heat dissipation fin 2 will be described in detail below.

Referring to fig. 1, in the present embodiment, the heat dissipation fins 2 include primary heat dissipation fins and auxiliary heat dissipation fins, which are formed on different surfaces of the box body 1.

Alternatively, the primary heat dissipation fins include tree-shaped fins 21 integrally formed on the outer surface of the tank body 1.

Alternatively, the auxiliary radiating fins include rib-type fins 22 integrally formed on the outer or inner surface of the tank body 1.

Referring to fig. 1, in this embodiment, the box body 1 includes a U-shaped body 11 and a box cover 12, a tree-shaped fin 21 is located on an outer surface of a bottom of the U-shaped body 11, an area of a bottom surface corresponding to the tree-shaped fin 21 is the largest, and a heat dissipation area of the tree-shaped fin 21 is large and serves as a main heat dissipation fin. The rib-type fins 22 located on the outer surface of the side portion of the U-shaped body 11 are arranged in alignment as a whole. The ribbed fins 22 on the inner surface of the sides of the U-shaped body 11 include larger sized fins for connection with other components and smaller sized micro fins. That is, the rib-type fins 22 on the inner surface of the side part are used as the auxiliary heat dissipation fins, and part of the fins are also used as the connecting parts, so that the number of the connecting parts required to be arranged can be greatly reduced, the utilization rate of the internal space of the electric cabinet can be improved, and the wire fixing and wiring are facilitated.

The auxiliary heat dissipating fins further include rib-type fins 22 provided on the surface of the case cover 12. Ribbed fins 22 on the outer surface of the cover 12 are also integrally formed with the cover 12.

In this embodiment, the case body 1 is made of a heat conductive material. Specifically, the U-shaped body 11 is made of a heat conductive material, and the lid 12 is also made of a heat conductive material. The fins and parts supported by the fins are integrally extruded and formed, and the fins and the parts supported by the fins are made of the same material.

According to the technical scheme, the cross section of the electric cabinet is designed according to the golden ratio, and tree-shaped fins 21 are adopted outside the electric cabinet, so that the heat dissipation performance is good; the main radiating fins adopt novel tree-shaped fins 21, the side surfaces adopt rib-shaped fins 22 for auxiliary radiating, and the overall radiating performance of the electric cabinet is better than that of a common electric cabinet. All the radiating fins 2 are integrally formed, the electric cabinet is good in processing performance, simple in process, low in cost and excellent in grounding performance.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The electric cabinet is characterized by comprising a cabinet body (1), wherein a plurality of surfaces inside and outside the cabinet body (1) are provided with radiating fins (2); the cross section of the electric cabinet is rectangular, and the ratio of the width to the length is golden;

the box body (1) comprises a U-shaped body (11) and a box cover (12), the U-shaped body (11) comprises a bottom and side parts, and the box cover (12) is connected with the side parts of the U-shaped body (11); the radiating fins (2) comprise tree-shaped fins (21) and rib-shaped fins (22); the tree-shaped fins (21) are formed on the outer surface of the bottom of the U-shaped body (11) and are integrally extruded with the U-shaped body (11), the rib-shaped fins (22) are formed on the inner surface and the outer surface of the side parts and are integrally extruded with the U-shaped body (11), and the rib-shaped fins (22) are also formed on the outer surface of the box cover (12) and are integrally extruded with the box cover (12); the tree-shaped fins (21) are multiple in number, the tree-shaped fins (21) located on the edges are provided with inner concave parts (215), the inner concave parts (215) can be spliced with inner concave parts (215) in corresponding positions of another electric cabinet to form concave grooves for penetrating guide rails, and the two electric cabinets are connected together side by side through the guide rails so as to realize splicing of the electric cabinets;

at least one of the ribbed fins (22) on the inner surface of the side portion is provided with a female structure (223) connected to a connecting member by which the two U-shaped bodies (11) are connected together.

2. The electrical cabinet according to claim 1, characterized in that the tree-shaped fins (21) comprise a trunk portion (211) and branch portions (212), the root of the trunk portion (211) being connected to the cabinet body (1), the branch portions (212) being connected to the trunk portion (211).

3. The electrical cabinet according to claim 2, wherein the branch portion (212) comprises two or more layers.

4. The electric cabinet according to claim 2, characterized in that the tree-shaped fin (21) further comprises a top portion (213), the top portion (213) being connected to the tip of the trunk (211), the top portion (213) having a plane with a size larger than the tip of the trunk (211).

5. The electric cabinet according to claim 4, characterized in that said tree-shaped fins (21) are plural, said top (213) of each tree-shaped fin (21) being flush.

6. The electric cabinet according to claim 1, characterized in that the tree-shaped fins (21) are formed in rows on the outer surface of the cabinet body (1).

7. The electric cabinet according to claim 1, characterized in that the rib-type fins (22) are formed in rows on the inner and/or outer surface of the cabinet body (1).

8. The electric cabinet according to claim 1, characterized in that the tree-shaped fins (21) are plural in number, and the tree-shaped fins (21) at the edge are provided with mounting structures (214), through which the electric cabinet can be mounted with the ground or other components.

9. The electrical cabinet according to claim 1, characterized in that the cross-section of the concave structure (223) is C-shaped.

10. The electric cabinet according to claim 1, wherein at least one of the rib-type fins (22) located on the inner surface of the side portion has a connecting portion for holding a partition.

11. The electrical cabinet according to claim 10, wherein the connecting portion comprises a groove (224), a protrusion (225).

12. The electric cabinet according to claim 1, characterized in that the heat dissipating fins (2) comprise primary heat dissipating fins and secondary heat dissipating fins formed on different surfaces of the cabinet body (1).

13. The electric cabinet according to claim 12, characterized in that said primary heat dissipating fins comprise tree-shaped fins (21) integrally formed on the outer surface of said cabinet body (1).

14. The electric cabinet according to claim 12, characterized in that the auxiliary radiating fins comprise rib-type fins (22) integrally formed on the outer or inner surface of the cabinet body (1).

15. The electric cabinet according to claim 14, wherein the auxiliary heat dissipating fins further comprise rib-type fins (22) integrally formed on an outer surface of the cabinet cover (12).

16. The electric cabinet according to claim 1, characterized in that the cabinet body (1) is of a heat conducting material.

17. The electrical cabinet of claim 1, wherein the electrical cabinet is a fanless structure.