Switch box and energy storage system

Abstract

The utility model discloses a switch box and an energy storage system, and belongs to the technical field of electrical equipment, and the switch box comprises a box body which is provided with an accommodation cavity; the box cover is connected with the box body and covers and seals the accommodating cavity; the supporting piece is arranged in the containing cavity and connected with the box body; the first connecting piece is arranged on the box cover, and the first connecting piece is configured to be connected with the supporting piece so that the box cover can be fixed to the box body; the supporting piece is arranged in the containing cavity, the inner surface of the box body serves as a supporting piece connecting foundation, and then the box cover and the box body are fixed through connection of the first connecting piece and the supporting piece, so that the sealing gasket is pressed between the box cover and the box body to form sealing, and a step of the box body does not need to serve as the connecting foundation; therefore, the requirement for sealing switch boxes of different specifications can be met.

Description

Technical Field

[0001] This application belongs to the technical field of electrical equipment, and particularly relates to a switch box and an energy storage system. Background Art

[0002] The energy storage industry is undergoing a trend change from air cooling to liquid cooling, and the waterproof sealing requirements for boxes such as switch boxes are also getting higher and higher.

[0003] Currently, the conventional solution is to set a gasket on the box cover, and use connection structures such as riveting or bolts to fasten the step of the box cover and the box body. Through the fastening force between the box cover and the box body, the gasket is compressed and deformed, so as to form a sealing interface. However, this connection structure cannot meet the requirements for sealing switch boxes of different specifications. Summary of the Utility Model

[0004] Utility Model Purpose: The embodiments of this application provide a switch box, aiming to solve the technical problem that the connection structure of the current switch box cannot meet the sealing requirements of switch boxes of different specifications; another purpose of this application is to provide an energy storage system.

[0005] Technical Solution: The switch box described in the embodiments of this application includes:

[0006] A box body, having a receiving cavity;

[0007] A box cover, connected to the box body, and the box cover seals the receiving cavity;

[0008] A support member, disposed in the receiving cavity and connected to the box body;

[0009] A first connecting member, disposed on the box cover, and the first connecting member is configured to be connected to the support member so as to fix the box cover on the box body.

[0010] In some embodiments, the box body includes an inner wall, and the support member includes:

[0011] A bracket, connected to the inner wall;

[0012] A support column, disposed on the bracket, and the first connecting member is connected to the support column.

[0013] In some embodiments, the support member further includes a sealing ring, the sealing ring is disposed on the support column and is penetrated by the first connecting member, and the sealing ring seals the connection between the box cover and the support column.

[0014] In some embodiments, a groove is provided on a side of the support column away from the bracket, the groove is disposed around the outer periphery of the first connecting member, and at least a part of the sealing ring is disposed in the groove.

[0015] In some embodiments, the bracket includes:

[0016] A bearing plate, connected to the inner wall, and the support column is connected to the bearing plate;

[0017] A plurality of support plates, located on a side of the bearing plate away from the box cover and connected to the bearing plate, the support plates extend in a direction from the bearing plate to the inner bottom surface of the box body and abut against the inner wall.

[0018] In some embodiments, the box body includes:

[0019] A first body, enclosing the accommodation cavity;

[0020] A stepped portion, connected to the first body, and the stepped portion surrounds and forms an opening communicating with the accommodation cavity;

[0021] The box cover includes:

[0022] A second body, covering the opening, and a first connecting member connects the second body and the support member;

[0023] A flanging, connected to the second body and surrounding the outer periphery of the stepped portion.

[0024] In some embodiments, the stepped portion includes:

[0025] A first folded edge, connected to the first body and disposed opposite to the second body;

[0026] A second folded edge, located on a side of the first body away from the flanging and connected to the first folded edge, the second folded edge extends in a direction from the first folded edge to the second body, and the second folded edge is sealingly connected to the second body.

[0027] In some embodiments, the switch box further includes a sealing gasket, and the sealing gasket is disposed between the second body and the second folded edge.

[0028] In some embodiments, the switch box further includes a second connecting member, and the second connecting member is located between the flanging and the second folded edge and connects the second body and the first folded edge.

[0029] Correspondingly, an energy storage system according to an embodiment of the present application includes:

[0030] An energy storage cabinet;

[0031] A battery module, disposed in the energy storage cabinet for storing electric energy;

[0032] A liquid cooling module, disposed in the energy storage cabinet for cooling the battery module;

[0033] The above-mentioned switch box is disposed in the energy storage cabinet and connected to the battery module.

[0034] Beneficial effects: In the switch box according to the embodiment of the present application, the support member is disposed in the accommodating cavity, and the inner surface of the box body is relied on as the connection basis of the support member. Then, the fixing of the box cover and the box body is realized through the connection between the first connecting member and the support member, so that the sealing gasket is pressed between the box cover and the box body to form a seal, without using the step of the box body as the connection basis, thereby meeting the requirements for connecting switch boxes of different specifications to achieve sealing; at the same time, since the support member is disposed in the accommodating cavity, the formation of a protruding structure on the outer side of the box body is avoided, and the occupied space of the box body can be saved.

[0035] The energy storage system according to the embodiment of the present application includes the above-mentioned switch box, and thus can have all the technical features and beneficial effects of the above-mentioned switch box. Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

[0037] Figure 1 It is a cross-sectional view of the switch box provided by the embodiment of the present application;

[0038] Figure 2 is Figure 1 the enlarged view at A in

[0039] Figure 3 It is a perspective view of the box body provided by the embodiment of the present application;

[0040] Figure 4 is Figure 3 the enlarged view at B in

[0041] Figure 5 It is a schematic diagram of another connection manner between the bracket and the box body provided by the embodiment of the present application;

[0042] Figure 6 It is a schematic diagram of the structure of the second connecting member and the first folded edge provided by the embodiment of the present application;

[0043] Reference numerals: 1, box body; 10, inner wall; 100, accommodation cavity; 11, first body; 12, step portion; 121, first folded edge; 122, second folded edge; 2, box cover; 21, flanging; 22, second body; 3, support member; 31, bracket; 311, bearing plate; 312, support plate; 3121, ear plate; 313, support stud; 314, nut; 32, support column; 321, groove; 322, first screw hole; 323, second screw hole; 33, sealing ring; 34, bearing stud; 4, first connecting member; 41, screw; 5, gasket; 6, second connecting member. Detailed implementation manners

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0045] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "height", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 should not be construed as a limitation to the present application. In the description of the present application, "a plurality of" means two or more, and "at least one" means one, two or more, unless otherwise specifically defined. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical. For example, within the range of an included angle of 80° - 100°, it is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel. For example, within the range of 10° of complete parallelism, it is considered parallel.

[0046] As a preamble to the embodiments of the present application, the existing switch box includes a box body and a box cover. A sealing gasket is pasted on the box cover, and a connecting structure such as riveting or bolts is used to fasten the box cover to the step of the box body. The sealing gasket is compressed and deformed by the fastening force between the box cover and the box body, thereby realizing the sealing between the box cover and the box body. The conventional method of the step is to form a hem perpendicular to the inner wall of the box body at the opening of the box body. This hem contacts the sealing gasket to form a sealing interface. After the bolt passes through the box cover and the hem, it is locked by a nut. In order to cooperate with the installation of the bolt, the width of the step, that is, the width of the hem, needs to be able to satisfy the settings of both the sealing gasket and the bolt at the same time. The hem sizes of different specifications of switch boxes are different. When the width of the hem is relatively narrow, it is impossible to accommodate the setting of the bolt. Therefore, it is necessary to extend the width of the hem. If the hem is folded and extended outward from the box body, the hem is likely to interfere with the components around the switch box, increasing the space required for the layout of the switch box; if the hem is folded and extended inward, the wider the hem is, the more it will block the opening of the box body, which will affect the assembly of the internal components of the switch box. For example, when using a tool to install a screw, since the screw is installed from top to bottom, if the screw installation position is just below the hem, the tool will be blocked by the hem, hindering the installation operation. In order to avoid the obstruction of the hem, it is necessary to reduce the width of the hem, but after the width of the hem is reduced, it is impossible to connect with the bolt.

[0047] In view of this, the embodiments of the present application provide a switch box, aiming to solve at least one of the above technical problems.

[0048] Please refer to Figure 1 and Figure 2 The switch box of the embodiments of the present application includes a box body 1, a box cover 2, a support member 3 and a first connecting member 4. The box body 1 has a receiving cavity 100 for assembling various components of the switch box; the box cover 2 is connected to the box body 1 and covers the receiving cavity 100 to form a seal for the receiving cavity 100 and protect the components in the receiving cavity 100.

[0049] The support member 3 is arranged in the receiving cavity 100 and is connected to the box body 1. The first connecting member 4 is arranged on the box cover 2. The first connecting member 4 is configured to be connected to the support member 3 so that the box cover 2 is fixed to the box body 1.

[0050] The first connector 4 passes through the box cover 2 and connects to the support member 3, securing the box cover 2 to the box body 1 and squeezing the sealing gasket 5 to achieve a sealed switch box. The provision of the support member 3 avoids the need for a step as a connection base between the box body 1 and the box cover 2, thus eliminating the need for a specific step width. This allows the box cover 2 to be secured to the box body 1 by the first connector 4 in conjunction with the support member 3, even when the step widths of switch boxes of varying specifications vary. This allows the box cover 2 and the box body 1 to be fully squeezed against the sealing gasket 5 to achieve a seal. Furthermore, the support member 3 uses the inner surface of the box body 1 as a connection base, fully utilizing the existing space within the box body 1, avoiding interference with switch box components and improving space resource utilization.

[0051] Please combine Figure 1 and Figure 2 In some embodiments, the box body 1 includes an inner wall 10, and the support member 3 includes a bracket 31 and a support column 32. The bracket 31 is connected to the inner wall 10. The inner wall 10 can be selected as the inner side wall or the inner bottom wall of the box body 1 based on the distribution of components in the box body 1. It only needs to ensure that the support member 3 and the components are spaced apart. The support column 32 is disposed on the bracket 31, and the first connecting member 4 is connected to the support column 32. The support column 32 is perpendicular to the box cover 2 and is close to the box cover 2 to shorten the required length of the first connecting member 4.

[0052] In this embodiment, inner wall 10 is selected to be the inner side wall of box body 1, so that support member 3 is as far away from the components in box body 1 as possible, while also shortening the distance between support member 3 and box cover 2, thereby reducing the size of support member 3. First connecting member 4 includes a screw 41. A first screw hole 322 is provided on the side of support column 32 away from bracket 31. Screw 41 passes through box cover 2 and is threaded into first screw hole 322, driving box cover 2 to press against box body 1.

[0053] Please combine Figure 1 and Figure 2 In some embodiments, the support member 3 further includes a sealing ring 33, which is disposed on a side of the support column 32 away from the bracket 31. The first connector 4 passes through the sealing ring 33 and is connected to the support column 32. The sealing ring 33 seals the connection between the box cover 2 and the support column 32. The sealing ring 33 is compressed between the box cover 2 and the support column 32, thereby blocking the gap between the first connector 4 and the box cover 2, thereby achieving a seal between the box cover 2 and the support column 32 at the position of the first connector 4.

[0054] Please combine Figure 2 、 Figure 3 and Figure 4, in some embodiments, a groove 321 is provided on the side of the support column 32 away from the bracket 31. The groove 321 is arranged around the outer periphery of the first connecting member 4, and at least a part of the sealing ring 33 is arranged in the groove 321. The plug-in fit between the sealing ring 33 and the groove 321 plays a role in limiting the sealing ring 33. At the same time, the sealing ring 33 can be fixed in the groove 321 by means of back glue to further limit the offset of the sealing ring 33. A part of the sealing ring 33 is located outside the support column 32, which can ensure that the lid 2 can effectively contact the sealing ring 33 after being fixed, forming extrusion on the sealing ring 33, so that the sealing ring 33 is deformed to seal the gap therebetween.

[0055] Please refer to Figure 2 , in some embodiments, the support member 3 further includes a bearing stud 34. The bearing stud 34 is located on the side of the bracket 31 facing the lid 2 and is connected to the bracket 31. A second screw hole 323 is provided on the side of the support column 32 close to the bracket 31. The bearing stud 34 is threadedly connected to the second screw hole 323 so that the support column 32 is fixed on the bracket 31 and the detachable connection between the support column 32 and the bracket 31 is realized, thereby facilitating the replacement of the support column 32 with different specifications to cooperate with the first connecting member 4. In some other embodiments, the support column 32 can also be fixed to the bracket 31 by welding to simplify the connection structure.

[0056] Please also combine with Figure 2 and Figure 4 , in some embodiments, the bracket 31 includes a bearing plate 311 and a plurality of support plates 312. The bearing plate 311 is connected to the inner wall 10 and is perpendicular to the inner wall 10. The support column 32 is located on the side of the bearing plate 311 facing the lid 2 and is connected to the bearing plate 311. The plurality of support plates 312 are located on the side of the bearing plate 311 away from the lid 2 and are connected to the bearing plate 311. Two adjacent support plates 312 are arranged at intervals. Each support plate 312 extends along the direction from the bearing plate 311 to the inner bottom wall of the box body 1, forming a structural relationship perpendicular to the bearing plate 311. Each support plate 312 abuts against the inner wall 10. When the bearing plate 311 is subjected to a downward force and has a tendency to bend downward, each support plate 312 is subjected to the reaction force of the inner wall 10 to support the bearing plate 311, stabilizing the connection between the bearing plate 311 and the inner wall 10. In this embodiment, the bearing stud 34 is vertically connected to the bearing plate 311. The support column 32 is connected to the bearing plate 311 through the cooperation of the second screw hole 323 and the bearing stud 34 and forms a relative positional relationship perpendicular to the bearing plate 311. The bearing stud 34 and the bearing plate 311 can be fixed by welding or riveting.

[0057] Please also combine with Figure 3 , Figure 4 and Figure 5In some embodiments, there are at least two support plates 312, and at least two support plates 312 are connected to an ear plate 3121. The ear plate 3121 is attached to the inner wall 10. The ear plate 3121 and the box body 1 can be welded or detachably connected. The detachable connection structure includes a support stud 313 and a nut 314. The support stud 313 is connected to the inner wall 10 and passes vertically through the ear plate 3121. The nut 314 is located on the side of the ear plate 3121 away from the inner wall 10. The nut 314 is threadedly connected to the support stud 313, pressing the ear plate 3121 against the inner wall 10 for easy connection.

[0058] Please combine Figure 2 and Figure 3 In some embodiments, the box body 1 includes a first body 11 and a step portion 12. The first body 11 encloses a receiving cavity 100. The step portion 12 is connected to the first body 11 and surrounds an opening communicating with the receiving cavity 100. Components are placed into the receiving cavity 100 through the opening. The box cover 2 includes a second body 22 and a flange 21. The second body 22 is covered on the step portion 12 to seal the opening. The first connecting member 4 connects the second body 22 and the support member 3. The flange 21 is connected to the second body 22 and surrounds the outer periphery of the step portion 12 to form a barrier for the step portion 12. The step portion 12 is located on the inner side of the flange 21, thereby preventing external impurities from entering the connection between the second body 22 and the step portion 12, thereby ensuring close contact between the second body 22 and the step portion 12.

[0059] Please combine Figure 2 and Figure 3 In some embodiments, the step portion 12 includes a first folded edge 121 and a second folded edge 122. The first folded edge 121 is connected to the first body 11 and is arranged opposite to the second body 22, that is, the first folded edge 121 and the second body 22 are parallel to each other; the second folded edge 122 is located on the side of the first body 11 away from the flange 21 and is connected to the first folded edge 121. At least a portion of the second folded edge 122 extends from the first folded edge 121 to the second body 22. The second folded edge 122 is sealed to the second body 22 to seal the opening. The first folded edge 121 and the second body 22 are in contact with each other, forming a contact surface for sealing between the box body 1 and the box cover 2. The formed contact surface is separated from the first folded edge 121, so that there is a height difference between the two, which can prevent external liquid from directly contacting the contact surface when the first folded edge 121 is in position.

[0060] Please combine Figure 2 and Figure 3, in some embodiments, the switch box further includes a gasket 5 disposed between the second body 22 and the second flange 122 and deformed by being squeezed by the second body 22 and the second flange 122, so that the gasket 5 is in close contact with the second body 22 and the second flange 122 respectively, improving the mutual sealing performance.

[0061] Please refer to Figure 6 , in some embodiments, the switch box further includes a second connecting member 6 located between the flange 21 and the second flange 122 and connecting the second body 22 and the first flange 121. The first flange 121 provides a connection basis for the second connecting member 6. That is to say, when the widths of the first flanges 121 corresponding to each inner side wall of the box body 1 are different, if the width of the first flange 121 allows the arrangement of the second connecting member 6, the connection between the second body 22 and the support member 3 can be replaced by the second connecting member 6. If the width of the first flange 121 is relatively narrow, the connection structure of the first connecting member 4 and the support member 3 can be adopted, and finally a combination form of the first connecting member 4 and the second connecting member 6 is formed, increasing the diversity of the connection between the box cover 2 and the box body 1 and the adaptability to different working conditions. The second connecting member 6 can adopt a connection structure in which a bolt is matched with a nut 314, which is a conventional technical means in the art and will not be elaborated here.

[0062] Correspondingly, an energy storage system provided by an embodiment of the present application includes an energy storage cabinet and a battery module, a liquid cooling module and the switch box of the above embodiment disposed in the energy storage cabinet. The battery module is used to store electric energy, which can be a lithium-ion battery, a lead-acid battery, etc.; the liquid cooling module is used to absorb the heat generated by the battery module during charging and discharging to realize the cooling of the battery module; the switch box is connected to the battery module and can be used to connect and disconnect the power supply, load and other electrical equipment.

[0063] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] The switch box provided by the embodiments of the present application has been introduced in detail above, and specific examples have been used to elaborate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A switch box, characterized in that, Comprising: A box body (1) having a receiving cavity (100); A box cover (2) connected to the box body (1), the box cover (2) covering and sealing the receiving cavity (100); A support member (3) disposed within the receiving cavity (100) and connected to the box body (1); A first connecting member (4) disposed on the box cover (2), the first connecting member (4) being configured to be connected to the support member (3) so that the box cover (2) is fixed to the box body (1).

2. The switch box according to claim 1, characterized in that, The box body (1) includes an inner wall (10), and the support member (3) includes: A bracket (31) connected to the inner wall (10); A support column (32) disposed on the bracket (31), the first connecting member (4) being connected to the support column (32).

3. The switch box according to claim 2, wherein The support member (3) further includes a sealing ring (33), the sealing ring (33) being disposed on the support column (32) and passed through by the first connecting member (4), the sealing ring (33) sealingly connecting the box cover (2) and the support column (32).

4. The switch box according to claim 3, characterized in that, A groove (321) is provided on a side of the support column (32) away from the bracket (31), the groove (321) being disposed around the outer periphery of the first connecting member (4), and at least a part of the sealing ring (33) is disposed within the groove (321).

5. The switch box according to claim 2, characterized in that, The bracket (31) includes: A bearing plate (311) connected to the inner wall (10), the support column (32) being connected to the bearing plate (311); A plurality of support plates (312) located on a side of the bearing plate (311) away from the box cover (2) and connected to the bearing plate (311), the support plates (312) extending along a direction from the bearing plate (311) to the inner bottom surface of the box body (1) and abutting against the inner wall (10).

6. The switch box according to claim 1, characterized in that, The box body (1) includes: A first body (11) enclosing the receiving cavity (100); A step portion (12) connected to the first body (11), the step portion (12) surrounding and forming an opening communicating with the receiving cavity (100); The box cover (2) includes: A second body (22) covering and sealing the opening, the first connecting member (4) connecting the second body (22) and the support member (3); A flanging (21) connected to the second body (22) and surrounding the outer periphery of the step portion (12).

7. The switch box according to claim 6, characterized in that, The step portion (12) includes: A first folded edge (121) connected to the first body (11) and disposed opposite to the second body (22); A second folded edge (122) located on a side of the first body (11) away from the flanging (21) and connected to the first folded edge (121), the second folded edge (122) extending along a direction from the first folded edge (121) to the second body (22), the second folded edge (122) being sealingly connected to the second body (22).

8. The switch box according to claim 7, characterized in that, The switch box further includes a sealing gasket (5), the sealing gasket (5) being disposed between the second body (22) and the second folded edge (122).

9. The switch box according to claim 7, characterized in that, The switch box further includes a second connecting member (6), the second connecting member (6) is located between the flanging (21) and the second folding edge (122), and connects the second body (22) and the first folding edge (121).

10. An energy storage system, characterized in that, Comprising: Energy storage cabinet; Battery module, arranged in the energy storage cabinet for storing electric energy; Liquid cooling module, arranged in the energy storage cabinet for cooling the battery module; The switch box according to any one of claims 1 to 9, arranged in the energy storage cabinet and connected to the battery module.

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