Electrical box body and power conversion equipment

Abstract

The utility model discloses an electrical box body and a power conversion device, the interior of the electrical box body is used for accommodating a power conversion module, the electrical box body is characterized in that the electrical box body comprises a terminal, and at least partial area of at least one box body side wall of the electrical box body sinks towards the interior of the electrical box body and forms a first wall surface; the terminal is arranged on the first wall surface, a first end of the terminal penetrates through the first wall surface and extends into the electrical box body, and a battery cell module is arranged in the electrical box body and is electrically connected with the first end of the terminal. According to the electrical box body provided by the utility model, the sinking structure is arranged on the side wall of the electrical box body, and the terminal passes through the sinking wall surface so as to reduce the protruding amount of the terminal relative to the side wall, thereby reducing the risk of bumping in the installation, wiring and transportation processes of the electrical box body, and reducing the installation difficulty.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage device technical field, especially relates to a kind of energy storage module. BACKGROUND

[0002] Electrical cabinet is a series of single battery standard package, it is composed of several battery cells, to realize the storage of electric energy, and release electric energy when needed to meet the electric energy use demand under various working conditions, the electrical cabinet currently, the energy storage and output function of electric energy is connected by power terminal to realize, information is realized inside and outside transmission by 485 protocol or CAN protocol mode, that is, terminal is the main interactive interface of electrical cabinet and external device;But terminal length is longer, leading to the space occupation of electrical cabinet is larger.

[0003] Therefore, how to reduce the space occupation when electrical cabinet is installed, is the technical problem that the person skilled in the art is urgent to solve. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a kind of electrical cabinet with small space occupation when installation.

[0005] Another purpose of the utility model is to provide a kind of power conversion equipment containing the above-mentioned electrical cabinet.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] An electrical cabinet, inside for accommodating power conversion module, including terminal, at least one cabinet side wall of the electrical cabinet, at least partial area is sunken towards the inside of the electrical cabinet and forms first wall surface;The terminal is arranged on the first wall surface, and the first end of the terminal penetrates the first wall surface and extends into the inside of the electrical cabinet, and the electrical cabinet is provided with battery cell module in the inside and is electrically connected with the first end of the terminal.

[0008] Preferably, in the above-mentioned electrical cabinet, the first wall surface is less than the axial length of the terminal based on the sinking distance of the cabinet side wall.

[0009] Preferably, in the above-mentioned electrical cabinet, first recess is equipped on the electrical cabinet side wall, the first wall surface is enclosed in the periphery of the first recess, and the recess direction of the first recess is towards the electrical cabinet or any side surface on the first wall surface.

[0010] Preferably, in the above-mentioned electrical cabinet, the length of the first recess in the first direction is less than or equal to the length of the electrical cabinet side wall in the first direction;

[0011] The length of the first recess in the second direction is less than or equal to the length of the electrical box side wall in the second direction.

[0012] Preferably, in the above electrical box, the box side wall provided with the first wall surface is in a stepped shape, and the first wall surface comprises at least two stepped surfaces, and the terminal is arranged on a connecting surface between the two stepped surfaces.

[0013] Preferably, in the above electrical box, a part of the connecting surface is provided with a second recess recessed towards the inside of the electrical box, and the second recess comprises a second wall surface enclosing the inner cavity of the electrical box, and at least part of the terminal is arranged on the second wall surface.

[0014] Preferably, in the above electrical box, the extension distance of the second recess in the second direction is less than or equal to the extension distance of the first wall surface in the second direction.

[0015] Preferably, in the above electrical box, the connecting surface is arranged in parallel with the second direction or at an acute angle with any one of the two stepped surfaces.

[0016] Preferably, in the above electrical box, the two stepped surfaces comprise a first stepped surface and a second stepped surface, the first stepped surface is arranged on one side of the electrical box and in parallel with the first direction, and the second stepped surface is arranged in parallel with the first stepped surface or at a preset angle in any direction with respect to the first stepped surface.

[0017] Preferably, in the above electrical box, the second stepped surface is a bent plane and is provided with a protruding portion in the second direction.

[0018] Preferably, in the above electrical box, the first wall surface is a circular arc surface configuration based on the concave or convex structure of the electrical box, and the terminal passes through the circular arc surface.

[0019] Preferably, in the above electrical box, the box side wall provided with the first wall surface is the side wall with smaller area on the electrical box.

[0020] Preferably, in the above electrical box, the area of the first wall surface extending in the second direction is used to arrange the terminal, and the axis of the terminal is arranged within a preset angle range, and the preset angle range is an angle range from perpendicular to parallel with respect to the second direction.

[0021] Preferably, in the above electrical box, a protective cover is further included, the protective cover is assembled on the box side wall, and the projection of the protective cover in at least one direction covers the terminal.

[0022] Preferably, in the above electrical box, the protective cover is a U-shaped plate structure and is fastened to the side wall of the box, the protective cover covers the entire first wall surface, and the closed end of the U-shaped structure is aligned with the corresponding side wall of the electrical box.

[0023] A power conversion device comprising the electrical box and the power conversion module according to any one of the above embodiments; the power conversion module is arranged in the electrical box, and the power conversion module comprises one or more of an inverter circuit, a rectifier circuit and a battery module.

[0024] As can be seen from the above technical solutions, the electrical box provided by the utility model has the following advantages: the first wall surface is arranged on at least one side wall of the box and is sunken downward, the first end of the terminal passes through the first wall surface and extends into the interior of the electrical box, and the interior of the electrical box can be electrically connected with the first end of the terminal after the power conversion module is arranged in the interior of the electrical box, so that the electrical energy can be supplied. The terminal is arranged on the first wall surface and can be horizontally or obliquely inserted into the interior of the electrical box by virtue of the sunken structure of the first wall surface relative to the side wall of the electrical box, so that the protruding amount of the terminal relative to the side wall is reduced, the space occupied by the terminal in the electrical box is reduced, the assembly and transportation convenience of the electrical box is improved, and the risk of damage to the electrical box is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the drawings needed in the following description or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The structure schematic diagram of the energy storage module provided by the present disclosure is shown in the figure.

[0027] Figure 2 The structure schematic diagram of the terminal and the first wall surface in an embodiment of the present utility model is shown in the figure.

[0028] Figures 3-5 The structure setting schematic diagram of the first recessed part is shown in the figure.

[0029] Figure 6 The schematic diagram of the box side wall with a stepped configuration is shown in the figure.

[0030] Figure 7 The structure schematic diagram of the second stepped surface arranged obliquely is shown in the figure.

[0031] Figure 8 The structure schematic diagram of the protruding part arranged on the second stepped surface is shown in the figure.

[0032] Figure 9 Structure diagram for setting second recess on connecting surface;

[0033] Figures 10-12 Structure diagram for different forms of second recess on connecting surface;

[0034] Figures 13-15 Structure diagram for first wall surface being circular arc structure;

[0035] Figure 16 Structure diagram for connecting multiple electrical cabinets;

[0036] Figure 17 Structure diagram for electrical cabinet with protective cover;

[0037] Figure 18 Structure diagram for internal structure of electrical cabinet.

[0038] Wherein, 10 - cabinet side wall; 20 - power conversion module; 30 - terminal; 40 - first wall surface; 50 - first recess; 610 - first step surface; 620 - second step surface; 6210 - convex part; 630 - connecting surface; 640 - electrical cabinet panel; 70 - second recess; 710 - second wall surface; 80 - protective cover. DETAILED DESCRIPTION

[0039] The utility model discloses a kind of electrical cabinets with small space occupation during installation.

[0040] Another core of the utility model discloses a kind of power conversion equipment containing the above electrical cabinet.

[0041] In order to make the personnel in this technical field better understand the utility model scheme, the present disclosure is explained below with reference to the drawings, and besides, the implementation shown below does not limit the utility model content recorded in claim in any way.The entire content of the constitution represented in the following embodiment is not limited to the solution of the utility model recorded in claim necessary.

[0042] In order to reduce the space occupation of the household electrical box, the back side is usually installed against the wall. The commonly used terminal is the MC4 terminal with a long strip structure. If the terminal is arranged at the top of the electrical box, the terminal is exposed outside the electrical box and protrudes from the top of the electrical box during transportation and use, which has a high risk of collision and damage. Moreover, the wiring of the parallel adjacent terminals of the electrical box is also exposed and has a risk. If the terminal is arranged at the side of the electrical box, a certain gap is required for connection during the parallel use of multiple electrical boxes, which increases the site occupation of the electrical box. The use of right-angle terminals can reduce the risk of collision and damage of the electrical box, but the cost is much higher than that of the MC4 terminal, which increases the product development and production cost of the electrical box.

[0043] As shown in Figure 1 and Figure 18 , the electrical box provided by the present disclosure is used to accommodate the power conversion module inside the box structure. It should be noted that the power conversion module 20 can be one or a combination of a battery, an inverter, and a PCS. The size of the electrical box is selected according to the number of power conversion modules 20 required by the working condition, so as to accommodate the required power conversion modules 20 and provide sufficient internal wiring space.

[0044] The electrical box includes a terminal 30 arranged through the wall surface structure of the box. Specifically, the electrical box is arranged with a first wall surface 40 structure in at least one side wall 10 of the box, at least partially sunken towards the inside of the electrical box, and the first wall surface 40 is based on the sunken structure of the side wall 10 of the electrical box for the installation of the terminal 30. It should be noted that the side wall 10 here specifically refers to the four side walls of the rectangular box in the circumferential direction, i.e., excluding the mounting surface arranged against the wall and the front decorative surface facing the user, the other four side wall structures. The first wall surface 40 can be arranged on one side wall, or can be arranged on all four side walls, and then the arrangement and installation of the terminal 30 can be selected at any position on a single or multiple side walls according to the needs.

[0045] The terminal 30 is arranged on the first wall surface 40, as shown in Figure 1 and Figure 2As shown, specifically, the first end of the terminal 30 passes through the first wall surface 40 and extends into the interior of the electrical box to be arranged, and the second end of the terminal 30 is exposed for external electrical component connection. After the power conversion module 20 is arranged in the interior of the electrical box, the first end of the terminal 30 can be electrically connected to realize power supply. The terminal 30 arranged on the first wall surface 40 can be inserted horizontally or obliquely into the interior of the electrical box by virtue of the sinking structure of the first wall surface 40 relative to the side wall 10 of the electrical box, which can reduce the protrusion of the terminal 30 relative to the side wall compared with the original vertical insertion structure of the electrical box side wall 10, thereby reducing the space occupation of the terminal 30 to the electrical box, improving the assembly and transportation convenience of the electrical box, and reducing the risk of damage.

[0046] Further, in order to arrange the terminal 30 in a safer manner, preferably, the sinking distance of the first wall surface 40 based on the side wall 10 of the electrical box in the first direction is greater than the axial length of the terminal 30. At this time, the terminal 30 is arranged in a form that the axis is parallel to the side wall 10 of the box. Since the MC4 terminal 30 is relatively long, about 6-10 cm, and is arranged in a form parallel to the side wall 10 of the box, the terminal 30 has a larger volume area embedded in the side wall 10 of the box under the condition of a certain sinking distance, thereby improving the safety of arrangement. Compared with the prior art in which the terminal 30 is arranged perpendicular to the first wall surface 40, in the present disclosure, on this basis, the sinking distance of the first wall surface 40 based on the side wall 10 of the electrical box in the vertical direction perpendicular to the plane of the first direction and the second direction is only slightly greater than the diameter of the terminal 30, so that the terminal 30 can be installed in a form of being completely embedded in the side wall 10 of the box. At this time, the terminal 30 can be embedded in the side wall 10 of the box with the smallest volume occupation, thereby reducing the risk of damage to the terminal 30 and having a safer assembly structure.

[0047] Further, as shown in Figure 1 and Figure 3 , the electrical box provided by the present disclosure is provided with a first recessed portion 50 on the side wall thereof, which is used for placing the terminal 30 to connect with the side wall of the electrical box. Meanwhile, the first wall surface 40 forms the peripheral wall of the first recessed portion 50. It should be noted that here specifically refers to the side or multiple side wall surface structure of the first wall surface 40 constituting the first recessed portion 50, and the recessed direction of the first recessed portion 50 is towards the interior of the electrical box. Specifically, as shown in Figure 3 , the first recessed portion 50 can be a through structure, and as shown in Figure 4 , the first recessed portion 50 forms a through slot type concave structure. The first recessed portion 50 can be a recessed structure based on the side wall of the electrical box, one side of which is composed of the first wall surface 40, and the bottom thereof can be parallel to Figure 3The terminal 30 can be installed through the first wall surface 40 on the plane of the side wall 10 of the electrical enclosure to achieve electrical connection with the power conversion module 20 inside the electrical enclosure. In practical applications, it can also be arranged as follows: Figure 5 As shown, the first recessed portion 50 is a semi-through groove-shaped partially recessed structure. Alternatively, the first recessed portion 50 can be a recessed structure based on one side of the first wall surface 40. In this case, a groove structure can be provided on the first wall surface 40, and one side wall of the first recessed portion 50 is an incomplete planar structure. The terminal 30 can then be embedded into the groove structure on the first wall surface 40 for installation. It should be noted that the purpose of the first recessed portion 50 is to provide a better embedded protection structure for the terminal 30. It only needs to meet the embedded protection requirements of the terminal 30 in the electrical enclosure, and it can satisfy the installation requirements of the terminal 30. Furthermore, the terminal 30 can be installed on any wall surface of the recessed structure.

[0048] Furthermore, in some embodiments of this utility model, the length of the first recess 50 in the first direction is less than or equal to the length of the electrical enclosure sidewall 10 in the first direction, and the length of the first recess 50 in the second direction may also be less than or equal to the length of the electrical enclosure sidewall 10 in the second direction. That is, on the sidewall where the first recess 50 is provided, the length of the recessed structure in both directions is not greater than the length of the electrical enclosure sidewall 10 in the corresponding directions, such as... Figure 1 As shown, the first direction and the second direction are two intersecting directions, and preferably the first direction is perpendicular to the second direction, so that the recessed part is only a sunken structure of the sidewall in a certain area, thereby reducing the space occupied by the first recessed part 50 inside the electrical box and improving the freedom of arrangement of the internal structure of the first recessed part 50.

[0049] like Figure 5 As shown, in order to improve the flexibility of terminal 30 installation, terminal 30 can be installed on the first wall surface 40 with different orientations on the first recess 50.

[0050] In some embodiments of this utility model, such as Figure 6 As shown, the electrical enclosure has a stepped configuration on the side wall where the first wall surface 40 is provided, and preferably the first wall surface 40 includes at least two stepped surfaces, namely a first stepped surface 610 and a second stepped surface 620; the two stepped surfaces can be inclined or parallel, and the terminal 30 is disposed on the connecting surface 630 between the two stepped surfaces. It should be noted that the two stepped surfaces can be adapted to the enclosure structure to form a first recess 50, and provide sufficient assembly space for the terminal 30 on the connecting surface 630. Figure 6As shown, the first stepped surface 610 is a horizontal plane, and the second stepped surface 620 is an inclined surface that forms a certain angle with the horizontal plane, and its inclined direction is along the first direction. The height of the end of the second stepped surface 620 facing the electrical enclosure panel 640 is higher than the end away from the electrical enclosure panel 640. The inclined surface of the second stepped surface 610 can accommodate the inclined installation of the terminal 30, improving the adaptability of the equipment to different installation environments.

[0051] It should be noted that the stepped configuration of the electrical enclosure sidewall described above is based on the original enclosure sidewall 10. As described above, when the electrical enclosure sidewall is provided with only two stepped surfaces, the first stepped surface 610 on the upper side is flush with the original enclosure sidewall 10, that is, the first stepped surface 610 is part of the structure of the enclosure sidewall 10, while the connecting surface 630 is the original first wall surface 40 structure, and the second stepped surface 620 corresponds to part of the first recessed portion 50 structure.

[0052] In other embodiments of this utility model, when the side wall of the electrical enclosure has more than two stepped surface structures, the first stepped surface 610 and the second stepped surface 620 can be positioned close to the side wall 10 or close to the first recess 50. Specifically, when the first stepped surface 610 and the second stepped surface 620 are positioned close to the side wall 10, the first stepped surface 610 is also part of the structure of the side wall 10, while the second stepped surface 620 is spaced apart from the first recess 50 and connected through other wall structures of the electrical enclosure. When the first stepped surface 610 and the second stepped surface 620 are positioned close to the first recess 50, the first stepped surface 610 is spaced apart from the side wall 10 and connected through other wall structures, while the second stepped surface 620 is also part of the structure of the first recess 50.

[0053] like Figure 7 As shown, the second stepped surface 620 is an inclined surface that forms a certain angle with the horizontal plane, and its inclination direction is along the second direction. Figure 7 The second step surface 620 faces Figure 7 The height on the right is higher than the direction. Figure 7 The height on the left side can also be adjusted to the second tier facing 620 degrees. Figure 7 The height on the right side is lower than the direction. Figure 7 The height on the left side.

[0054] Furthermore, based on the above embodiments, the connecting surface 630 can be a complete plane, a bent plane, or a plane with a recessed area, as long as it can achieve the connection between the first stepped surface 610 and the second stepped surface 620. In some embodiments of this utility model, to improve the safety of the terminal 30 after assembly, such as... Figure 9As shown, the partial area on the connecting surface 630 is also provided with a second recessed part 70 recessed towards the inside of the electrical cabinet, and the side of the second recessed part 70 recessed to the inside area of the electrical cabinet comprises a second wall surface 710 to enclose the electrical cabinet and maintain the closed structure, and at least part of the terminal 30 is arranged on the second wall surface 710 to protect the terminal 30 arranged on the second wall surface 710 through the second recessed part 70, and reduce the risk of collision. It should be emphasized that the complete plane referred to in the present disclosure is a plane with a width equal to the width of the electrical cabinet in the second direction.

[0055] It should be noted that the second recessed part 70 can be larger than the installation space requirement of the terminal 30 to improve the assembly convenience of the terminal 30, and provide a handheld area through the excess area, and as Figure 11 shown, the second recessed part 70 can also be used only as a handheld part, and at this time the terminal 30 is installed in the space of the first recessed part 50 and is located outside the space of the second recessed part 70.

[0056] Further, in some embodiments of the present application, the extension distance of the second recessed part 70 in the second direction is less than or equal to the extension distance of the first wall surface 40 in the second direction, that is, when the first wall surface 40 is arranged through the side wall of the electrical cabinet in the second direction, the maximum extension distance of the second recessed part 70 is equal to the length of the side wall of the electrical cabinet in the second direction, that is Figure 12 the structure shown, at this time the second recessed part 70 is a through groove structure recessed towards the inside of the electrical cabinet; and when the extension distance of the first wall surface 40 in the second direction is less than the side wall of the electrical cabinet, the second recessed part 70 can only be arranged within the coverage range of the first wall surface 40 in the second direction without exceeding the arrangement range of the first wall surface 40, at this time the second recessed part 70 is a half-through groove structure recessed towards the inside of the electrical cabinet, or as Figure 11 shown, a one-side open pit structure.

[0057] In addition, the connecting surface 630 connecting the first stepped surface 610 and the second stepped surface 620 can be parallel to the second direction and extend in the vertical plane to form a directly bent stepped surface structure with the first stepped surface 610 and the second stepped surface 620, which can make the appearance structure of the electrical cabinet more regular and make the installation of the terminal 30 more regular. At the same time, the connecting surface 630 can also be arranged at an acute angle with any one of the first stepped surface 610 and the second stepped surface 620. It should be noted that the acute angle inclination angle between the connecting surface 630 and any one of the first stepped surface 610 and the second stepped surface 620 can realize the dust blocking treatment of the terminal 30 connection point position, and the dust falling vertically from the first stepped surface 610 will directly fall on the second stepped surface 620 due to the inclination structure of the connecting surface 630, thereby reducing the influence on the interface of the terminal 30.

[0058] In some embodiments of the utility model, in the first wall surface 40 structure of two-stage stepped surface, the first stepped surface 610 is located on one side of the electrical box and is arranged parallel to the first direction to maintain the flat structure of the electrical box side wall 10; and the second stepped surface 620 can be arranged parallel to the first stepped surface 610 to form a common regular stepped configuration; at the same time, the second stepped surface 620 can also be arranged at a preset angle in any direction with the first stepped surface 610 to improve the degree of freedom of the structural arrangement of the second stepped surface 620 and reduce the difficulty of structural arrangement.

[0059] On the basis of the above-mentioned embodiments, the second stepped surface 620 can be a complete planar structure or a folded planar structure. In a specific embodiment of the utility model, as shown in Figure 8 , the second stepped surface 620 is a reverse V-shaped structure, and the second stepped surface 620 is a folded planar structure and is provided with a protruding portion 6210 in the second direction. The arrangement of the protruding portion 6210 can make the dust or debris falling on the second stepped surface 620 fall off the second stepped surface 620 under the guidance of the inclined protruding portion 6210 on both sides of the inclined planar surface and the action of gravity, or make the dust or debris falling on the second stepped surface 620 more easily fall off. The inclined second stepped surface 620 used in the present disclosure can reduce the accumulation of dust on the second stepped surface 620 and improve the electrical insulation.

[0060] In an embodiment, as shown in Figure 13 and Figure 14 , the first wall surface 40 can also be a circular arc surface configuration based on the side wall of the electrical box and have a concave or convex structure to improve the load-bearing effect of the first wall surface 40 on debris and improve the surface cleanliness. Correspondingly, the terminal 30 is fixedly arranged through the circular arc surface. It should be noted that, as shown in Figure 15 , the first wall surface 40 can also completely cover the side wall of the electrical box to improve the installation space of the terminal 30.

[0061] Further, in the electrical box provided by the present disclosure, the box side wall 10 provided with the first wall surface 40 is a smaller area side wall of the electrical box. A conventional electrical box has a rectangular parallelepiped structure, and among the four side walls in the circumferential direction, the top wall surface and the bottom wall surface are smaller area side walls, i.e. the first wall surface 40 is arranged on the top surface or the bottom wall surface of the electrical box. At this time, two electrical boxes can be arranged in close contact without affecting the connection of the terminal 30. At the same time, when wiring is required, the span of the wire harness is small, which can reduce the wiring cost and risk.

[0062] On the basis of the above-mentioned embodiments, the region of the first wall surface 40 extending in the second direction is used to arrange the terminal 30, and the axis of the terminal 30 is arranged within a preset angle range, specifically, the preset angle range is the angle range from the perpendicular to the parallel between the axis of the terminal 30 and the second direction, so that the terminal 30 can be freely arranged within the 180° range perpendicular and parallel to the arrangement plane, and in order to improve the assembly convenience and safety of the terminal 30, the axis of the terminal 30 is preferably arranged perpendicular to the second direction, i.e. parallel to the first direction.

[0063] In order to maintain the appearance integrity of the electrical box body, provide protection for the terminal 30, and meet the requirements of convenient wiring, dust prevention and the like of the terminal 30, in some embodiments of the utility model, as shown in Figure 17 the electrical box body further comprises a protective cover 80, which is assembled and connected to the side wall of the electrical box body through a connecting mode such as a hinge, buckle or bolt, and when the protective cover 80 is in the closed protection position on the side wall, the projection of the protective cover 80 on the side wall covers and covers each terminal 30 in at least one direction on the side wall, so as to achieve protection of the terminal 30 and filling of the recessed area on the side wall for mounting the terminal 30. It should be noted that the projection of the protective cover 80 on the side wall preferably covers and covers all the recessed areas of the side wall, and when the protective cover 80 is assembled and closed for protection, it fills and sets all the recessed areas, so that the structure of the electrical box body maintains the integrity of the appearance.

[0064] On the basis of the above-mentioned embodiments, as shown in Figure 17 the protective cover 80 is preferably designed as a U-shaped plate structure, and is mounted in the side wall position of the electrical box body and covers all the first wall surfaces 40, and the closed end of the protective cover 80, i.e. the bottom of the U-shaped structure, is flush with the side wall of the electrical box body. The overall appearance of the electrical box body is still a complete cuboid structure, which can be conveniently stacked during transportation without the need to provide special protection structure for the terminal 30, thereby reducing the transportation and use cost of the energy storage module.

[0065] Further, the present disclosure also provides a power conversion device, which comprises the electrical box body provided by any one of the above-mentioned embodiments, and further comprises a power conversion module 20. Specifically, the power conversion module 20 is arranged in the electrical box body and is electrically connected with the terminal 30 arranged through the side wall 10 of the electrical box body. The power conversion module specifically comprises one or more of an inverter circuit, a rectifier circuit and a battery module. When a plurality of electrical box bodies are arranged adjacent to each other, they can be electrically connected through the terminal 30 as shown in Figure 16 .

[0066] The terms "first", "second", "left", "right", and the like as used in the description and the claims of the utility model, and the drawings are used to distinguish different objects, and are not used to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but can include steps or units that are not listed.

[0067] The above description of disclosed embodiments enables those skilled in the art to carry out or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical cabinet, internally for housing a power conversion module (20), characterized in that, The electrical box includes a terminal (30), at least one side wall (10) of the electrical box is sunken in at least a partial region towards the inside of the electrical box and forms a first wall surface (40), the terminal (30) is arranged on the first wall surface (40), and a first end of the terminal (30) penetrates through the first wall surface (40) and extends into the inside of the electrical box, and the inside of the electrical box is used for arranging the power conversion module (20) and electrically connecting with the first end of the terminal (30).

2. The electrical enclosure of claim 1, wherein, The first wall surface (40) is sunken based on the side wall (10) by a distance less than the axial length of the terminal (30).

3. The electrical box of claim 2, wherein, The side wall (10) is provided with a first recess (50), the first wall surface (40) is surrounded by the periphery of the first recess (50), and the recess direction of the first recess (50) is towards the electrical box or any side surface on the first wall surface (40).

4. The electrical box of claim 3, wherein, The length of the first recess (50) in the first direction is less than or equal to the length of the side wall (10) in the first direction, or The length of the first recess (50) in the second direction is less than or equal to the length of the side wall (10) in the second direction.

5. The electrical box of claim 2, wherein, The side wall (10) provided with the first wall surface (40) is in a stepped shape, the first wall surface (40) includes at least two stepped surfaces, and the terminal (30) is arranged on a connecting surface (630) between the two stepped surfaces.

6. The electrical box of claim 5, wherein, Part of the connecting surface (630) is provided with a second recess (70) recessed towards the inside of the electrical box, the second recess (70) includes a second wall surface (710) surrounding the inner cavity of the electrical box, and at least part of the terminal (30) is arranged on the second wall surface (710).

7. The electrical box of claim 5, wherein, The extension distance of the second recess (70) in the second direction is less than or equal to the extension distance of the first wall surface (40) in the second direction.

8. The electrical box of claim 5, wherein, The connecting surface (630) is arranged in parallel with the second direction or at an acute angle with any one of the two stepped surfaces.

9. The electrical box of claim 5, wherein, The two stepped surfaces include a first stepped surface (610) and a second stepped surface (620), the first stepped surface (610) is arranged on one side of the electrical box and in parallel with the first direction, and the second stepped surface (620) is arranged in a structure parallel with the first stepped surface (610) or inclined at a preset angle in any direction with respect to the first stepped surface (610).

10. The electrical box of claim 9, wherein, The second stepped surface (620) is a bent plane and is provided with a protruding portion (6210) in the second direction.

11. The electrical box of claim 2, wherein, The first wall surface (40) is a circular arc surface configuration based on the concave or convex structure of the electrical box, and the terminal (30) penetrates through the circular arc surface.

12. The electrical enclosure of any of claims 1-11, wherein, The side wall (10) provided with the first wall surface (40) is a smaller side wall of the electrical box.

13. The electrical box of claim 12, wherein, The region of the first wall surface (40) extending in the second direction is used to arrange the terminal (30), and the axis of the terminal (30) is arranged within a preset angle range, which is an angle range from perpendicular to parallel to the second direction.

14. The electrical box of claim 1, wherein, Further comprising a protective cover (80) assembled on the cabinet side wall (10), and the projection of the protective cover (80) in at least one direction covers the terminal (30).

15. The electrical enclosure of claim 14, wherein, The protective cover (80) is a U-shaped plate structure and is snap-fitted on the cabinet side wall (10), the protective cover (80) covers all the first wall surface (40), and the closed end of the U-shaped structure is aligned with the corresponding side wall of the electrical cabinet.

16. A power conversion device, characterized by The electrical cabinet comprises the power conversion module (20) and the electrical cabinet as claimed in any one of claims 1-15; the power conversion module (20) is arranged in the electrical cabinet, and the power conversion module comprises one or more of an inverter circuit, a rectifier circuit and a battery module.

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