Combined cabinet connecting structure and energy storage converter cabinet

Abstract

The utility model discloses a cabinet combination connecting structure and an energy storage converter cabinet, and relates to the technical field of energy storage, the cabinet combination connecting structure comprises an annular plate, a sealing ring and a fixing assembly, the annular plate is arranged between a first cabinet body and a second cabinet body which are adjacent, one end of the annular plate is fixedly connected with the first cabinet body in a sealing mode, and the other end of the annular plate abuts against the second cabinet body through the sealing ring; the second cabinet body is further provided with a placement groove and a first containing groove, the sealing ring can abut against the interior of the placement groove after cabinet combination, the deformation part of the sealing ring can be contained in the first containing groove, and the fixing assembly is used for locking the two cabinet bodies; and the energy storage converter cabinet connects a plurality of cabinet bodies by using the combined cabinet connecting structure. According to the utility model, the cabinet combination connecting structure is arranged between the adjacent cabinet bodies, so that all the cabinet bodies can jointly form a channel for a bus to pass through, the channel has better sealing performance due to the arrangement of the sealing ring, and a gap is reserved between the two adjacent cabinet bodies due to the design of the annular plate, so that the heat dissipation of the cabinet bodies can be facilitated.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a cabinet connection structure and an energy storage converter cabinet. Background Art

[0002] The Power Conversion System (PCS) consists of power, control, protection, monitoring and other software and hardware. Its main functions include power smoothing, information exchange, protection, etc. The energy storage converter and booster integrated cabin (or energy storage converter cabinet) arranges multiple PCS cabinets outside the box, so the heat dissipation of the components inside the PCS cabinet and the protection in harsh environments are important factors affecting the reliability of the equipment.

[0003] Among them, multiple PCS cabinets are connected by combining cabinets, and a channel for the busbar to pass through needs to be opened between the multiple PCS cabinets. The channel can be formed by connecting the channel holes opened on the side panels of the multiple PCS cabinets in series; when two adjacent channel holes are connected in series, it is necessary to ensure that the channel after series connection has dustproof, rainproof and other functions, that is, to ensure the sealing of the channel, and at the same time, the heat dissipation problem of each PCS cabinet must also be considered.

[0004] Therefore, in view of the above background, an efficient combination solution is urgently needed to solve the sealing problem of the channel after the PCS cabinets are connected and the heat dissipation problem of each PCS cabinet. Utility Model Content

[0005] In view of this, the purpose of the present application is to provide a cabinet connection structure and an energy storage converter cabinet, which are used to solve the sealing problem of the channel after the PCS cabinets are connected and the heat dissipation problem of each PCS cabinet in the prior art.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a cabinet connection structure, which is arranged between two adjacent cabinets, the two adjacent cabinets are respectively a first cabinet and a second cabinet, the first cabinet has a first side panel facing the second cabinet, the second cabinet has a second side panel facing the first cabinet, a first channel hole is provided on the first side panel, a second channel hole is provided on the second side panel, the first channel hole and the second channel hole are arranged opposite to each other along a first direction, and the first direction is the arrangement direction of the first cabinet and the second cabinet;

[0008] The cabinet connection structure comprises an annular plate, a sealing ring and a fixing assembly;

[0009] The annular plate is arranged between the first side plate and the second side plate, and the annular plate is sleeved on the outer periphery of the first channel hole;

[0010] An annular groove is formed on one side of the annular plate facing the second side plate;

[0011] One end of the sealing ring is installed in the annular groove, and the other end of the sealing ring protrudes from the annular plate along the first direction and is arranged toward the second side plate;

[0012] The second side plate is provided with a placement groove for placing the other end of the sealing ring, and the placement groove is sleeved on the outer periphery of the second channel hole;

[0013] The contour of the placement groove away from the outer side of the second channel hole is consistent with the outer peripheral contour of the sealing ring;

[0014] A first accommodating groove is further provided on the inner side of the placement groove close to the second channel hole, and the first accommodating groove is communicated with the placement groove to accommodate at least a part of the deformed portion of the sealing ring after it abuts against the placement groove;

[0015] The fixing assembly is used to fix the first side plate and the second side plate so that the annular plate is located between the first side plate and the second side plate and the sealing ring is located between the annular groove and the placement groove.

[0016] In a specific possible implementation manner, the depth of the first receiving groove is consistent with that of the placement groove.

[0017] In a specific possible implementation scheme, a second accommodating groove is provided on the side of the annular plate facing the second side plate, the second accommodating groove is located on the outer side of the annular groove away from the first channel hole, and the second accommodating groove is connected to the annular groove to accommodate a partially deformed portion of the sealing ring after it abuts against the placement groove.

[0018] In a specific possible implementation manner, the first accommodating groove is integrally formed with the placement groove, and the second accommodating groove is integrally formed with the annular groove.

[0019] In a specific embodiment, the fixing assembly includes a stud and a nut;

[0020] The stud is disposed between the first receiving groove and the second passage hole;

[0021] One end of the stud is fixed to the second side plate, and the other end of the stud extends along the first direction and is arranged toward the first side plate;

[0022] The first side plate is provided with a stud hole, and the stud hole is arranged between the annular plate and the first channel hole;

[0023] The stud is coaxially arranged with the stud hole, and the stud is locked by the nut after passing through the stud hole, so as to fix the first side plate and the second side plate.

[0024] In a specific possible implementation manner, there are a plurality of fixing components, a plurality of stud holes, and the fixing components and the stud holes are arranged in a one-to-one correspondence.

[0025] In a specific possible implementation manner, the plurality of fixing components are evenly arranged.

[0026] In a specific embodiment, in the plurality of fixing assemblies, the length of at least two of the studs extending along the first direction is greater than the length of the other studs extending along the first direction.

[0027] In a specific possible implementation manner, a first positioning surface is provided on the outer periphery of the annular plate on one side facing the second side plate;

[0028] The second side plate is provided with a positioning groove, the positioning groove is sleeved on the outer periphery of the placement groove, and the outer peripheral surface of the positioning groove is set as the second positioning surface;

[0029] The side of the annular plate facing the second side plate can be embedded in the positioning groove and the first positioning surface matches the second positioning surface.

[0030] Compared with the prior art, the above technical solution has the following beneficial effects:

[0031] In the cabinet connection structure, an annular plate is provided, and after the cabinets are combined, the annular plate is located between two adjacent cabinet bodies, so that a gap is left between the two adjacent cabinet bodies, which can facilitate the heat dissipation of the cabinet bodies; moreover, one side of the annular plate is sleeved on the outer periphery of the first channel hole of the first cabinet body, and the other side of the annular plate is sealed and connected to the second side plate of the second cabinet body by providing a sealing ring, and the sealing ring is sleeved on the outer periphery of the second channel hole on the second side plate, so that the channel formed by the first channel hole, the annular plate and the second channel hole can be sealed, and has better dustproof and rainproof functions; in addition, by providing a placement groove and a first accommodating groove, the deformation direction of the sealing ring after being compressed can be guided, and most of the deformed part of the sealing ring can enter the first accommodating groove instead of entering between the annular plate and the second side plate, so as to avoid the existence of a gap between the annular plate and the second side plate, and the sealing ring contacts the outside world through the gap. This design is conducive to extending the service life of the sealing ring, improving the sealing of the entire channel, and ensuring the connection stability between the annular plate and the second side plate after the cabinets are combined.

[0032] In a second aspect, the present application provides an energy storage converter cabinet, comprising a plurality of cabinets and a cabinet connection structure as described in any one of the first aspects, and a cabinet connection structure is provided between each two adjacent cabinets.

[0033] Compared with the prior art, the above technical solution has the following beneficial effects:

[0034] In the energy storage converter cabinet, by arranging a cabinet connection structure between adjacent cabinets, all cabinets can together form a channel for the busbar to pass through, and the channel has good sealing performance because the cabinet connection structure is provided with a sealing ring; moreover, since the annular plate in the cabinet connection structure is arranged between two adjacent cabinets, a gap is left between the two adjacent cabinets, which can facilitate the heat dissipation of each cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to make the advantages of the present application more easily understood, the present application briefly described above will be described in more detail by referring to the specific embodiments shown in the accompanying drawings. It can be understood that these drawings only depict typical embodiments of the present application and therefore should not be considered as limiting the scope of protection thereof. The present application is described and explained with additional characteristics and details through the accompanying drawings.

[0036] Figure 1 is a schematic diagram of the main structure of an energy storage converter cabinet according to an exemplary embodiment;

[0037] Figure 2 is a schematic diagram of a three-dimensional structure in which a first cabinet is connected to a second cabinet according to an exemplary embodiment;

[0038] Figure 3 is a schematic diagram of a main structural view showing a first cabinet body connected to a second cabinet body according to an exemplary embodiment;

[0039] Figure 4 is a left-side structural schematic diagram of a first cabinet according to an exemplary embodiment;

[0040] Figure 5 is a schematic diagram of a three-dimensional structure of a first cabinet according to an exemplary embodiment;

[0041] Figure 6 is a right side structural schematic diagram of a second cabinet according to an exemplary embodiment;

[0042] Figure 7 is a schematic diagram of a three-dimensional structure of a second cabinet according to an exemplary embodiment;

[0043] Figure 8 is a schematic diagram of a three-dimensional structure of an annular plate according to an exemplary embodiment;

[0044] Fig. 9 It is a schematic diagram of a front view structure showing a cabinet connection structure abutting against a second side plate according to an exemplary embodiment.

[0045] The reference numerals are as follows:

[0046] 1- First cabinet,

[0047] 11-first side plate, 111-first channel hole, 112-stud hole;

[0048] 2- The second cabinet,

[0049] 21-second side plate, 211-second channel hole, 212-placing groove, 213-first accommodating groove, 214-positioning groove, 2141-second positioning surface;

[0050] 3- Cabinet connection structure,

[0051] 31-annular plate, 311-annular groove, 312-second receiving groove, 313-first positioning surface,

[0052] 32-Seal ring,

[0053] 331-stud, 332-positioning stud, 333-nut;

[0054] 4-cover plate;

[0055] 5-Main body. DETAILED DESCRIPTION

[0056] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0057] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0058] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0059] In order to facilitate the understanding of a cabinet connection structure and energy storage converter cabinet provided by the present application, its application scenario is first explained. In the prior art, the energy storage converter cabinet arranges multiple PCS cabinets outside the box body, so the heat dissipation of the internal components of the PCS cabinet body and the protection in harsh environments are important factors affecting the reliability of the equipment. Among them, multiple PCS cabinets are connected by cabinet connection, and it is necessary to open a channel for the busbar to pass through between multiple PCS cabinets. The channel can be formed by connecting the channel holes opened on the side panels of multiple PCS cabinets in series; a cabinet connection structure is required between two adjacent channel holes for series connection. The cabinet connection structure must ensure that the channel after series connection has dustproof, rainproof and other functions, that is, to ensure the sealing of the channel, and at the same time, the heat dissipation problem of each PCS cabinet must also be considered.

[0060] To this end, the present application provides a cabinet connection structure and an energy storage converter cabinet, thereby solving the sealing problem of the channel after the PCS cabinets are connected and the heat dissipation problem of each PCS cabinet existing in the prior art.

[0061] The technical solution of this embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and implementation methods can be combined with each other if there is no conflict.

[0062] Figure 1 is a schematic diagram of the main structure of an energy storage converter cabinet according to an exemplary embodiment; Figure 2 is a schematic diagram of a three-dimensional structure in which a first cabinet is connected to a second cabinet according to an exemplary embodiment; Figure 3 is a schematic diagram of a main structural view showing a first cabinet body connected to a second cabinet body according to an exemplary embodiment; Figure 4 is a left-side structural schematic diagram of a first cabinet according to an exemplary embodiment; Figure 5 is a schematic diagram of a three-dimensional structure of a first cabinet according to an exemplary embodiment; Figure 6 is a right side structural schematic diagram of a second cabinet according to an exemplary embodiment; Figure 7 is a schematic diagram of a three-dimensional structure of a second cabinet according to an exemplary embodiment; Figure 8 is a schematic diagram of a three-dimensional structure of an annular plate according to an exemplary embodiment; Fig. 9 It is a schematic diagram of a front view structure showing a cabinet connection structure abutting against a second side plate according to an exemplary embodiment.

[0063] In an exemplary embodiment of the present application, a cabinet connection structure 3 is provided, which can be used for serial connection between two channel holes of two adjacent PCS cabinets.

[0064] like Figures 1 to 9As shown, a cabinet connection structure 3 is arranged between two adjacent cabinets. Optionally, the cabinet is a PCS cabinet, and the two adjacent cabinets are respectively a first cabinet 1 and a second cabinet 2. The first cabinet 1 has a first side panel 11 facing the second cabinet 2, and the second cabinet 2 has a second side panel 21 facing the first cabinet 1. A first channel hole 111 is opened on the first side panel 11, and a second channel hole 211 is opened on the second side panel 21. The first channel hole 111 and the second channel hole 211 are arranged opposite to each other along a first direction, and the first direction is the arrangement direction of the first cabinet 1 and the second cabinet 2.

[0065] Specifically, Figure 8 and Fig. 9 As shown, the cabinet connection structure 3 includes an annular plate 31, a sealing ring 32 and a fixing assembly. The annular plate 31 can be in a circular, square, rectangular or other shapes. In this embodiment, the annular plate 31 is in a rounded rectangular shape for example. The sealing ring 32 is adapted to the shape of the annular plate 31. In this embodiment, the sealing ring 32 is in a rounded rectangular shape for example.

[0066] In this embodiment, if Figures 3 to 5 as well as Figure 8 As shown, the annular plate 31 is arranged between the first side plate 11 and the second side plate 21, and the annular plate 31 is sleeved on the outer periphery of the first channel hole 111; an annular groove 311 is provided on the side of the annular plate 31 facing the second side plate 21, and the annular groove 311 is a rounded rectangle, which is formed on the side of the annular plate 31 facing the second side plate 21 and is recessed along the first direction and toward the side away from the second side plate 21, and the annular groove 311 is designed to assemble the sealing ring 32.

[0067] It should be noted that one side of the annular plate 31 is sealed and fixed on the first side plate 11, and the other side of the annular plate 31 is sealed and abutted against the second side plate 21 by being equipped with a sealing ring 32. After the cabinets are connected, the annular plate 31 is located between the first side plate 11 and the second side plate 21, and a gap can be left between the two adjacent cabinets.

[0068] In this embodiment, if Fig. 9As shown, the sealing ring 32 is mainly used to achieve sealing between the annular plate 31 and the second side plate 21 to ensure sealing between the first channel hole 111 and the second channel hole 211 connected in series by the cabinet connection structure 3 and the outside world. Specifically, one end of the sealing ring 32 is installed in the annular groove 311, and the other end of the sealing ring 32 protrudes from the annular plate 31 along the first direction and is arranged toward the second side plate 21; a placement groove 212 for placing the other end of the sealing ring 32 is opened on the second side plate 21, and the placement groove 212 is sleeved on the outer periphery of the second channel hole 211; the contour of the placement groove 212 away from the outer side of the second channel hole 211 is consistent with the outer peripheral contour of the sealing ring 32, so that after the sealing ring 32 is placed in the placement groove 212, the outer periphery of the sealing ring 32 is in contact with the outer side surface of the placement groove 212 away from the second channel hole 211; a first accommodating groove 213 is also provided on the inner side of the placement groove 212 close to the second channel hole 211, and the first accommodating groove 213 is connected with the placement groove 212 to accommodate at least part of the deformed part of the sealing ring 32 after it abuts against the placement groove 212.

[0069] It should be noted that, in the process of placing the sealing ring 32 into the placement groove 212, since the outer periphery of the sealing ring 32 is in contact with the outer side surface of the placement groove 212 away from the second channel hole 211, and a first receiving groove 213 is also provided on the inner side of the placement groove 212 close to the second channel hole 211, when the sealing ring 32 is squeezed and deformed, the above-mentioned structural design will guide most of the deformed part of the sealing ring 32 into the first receiving groove 213.

[0070] In this embodiment, if Fig. 9 As shown, the main function of the fixing assembly is to lock the cabinet connection structure 3 with two adjacent cabinets. Specifically, the fixing assembly is used to fix the first side plate 11 and the second side plate 21 so that the annular plate 31 is located between the first side plate 11 and the second side plate 21 and the sealing ring 32 is located between the annular groove 311 and the placement groove 212.

[0071] It should be noted that after the cabinet connection structure 3 is locked with the two adjacent cabinets through the fixing assembly, the side of the annular plate 31 facing the second side plate 21 is sealed against the second side plate 21 by being equipped with a sealing ring 32, and the sealing ring 32 can be located between the annular groove 311 and the placement groove 212.

[0072] With the above structural design, in the cabinet connection structure 3, by setting the annular plate 31, and after the cabinets are connected, the annular plate 31 is located between the two adjacent cabinets, so that a gap is left between the two adjacent cabinets, which can facilitate the heat dissipation of the cabinets; moreover, one side of the annular plate 31 is sleeved on the outer periphery of the first channel hole 111 of the first cabinet 1, and the other side of the annular plate 31 is sealed and connected to the second side plate 21 of the second cabinet 2 by setting a sealing ring 32, and the sealing ring 32 is sleeved on the outer periphery of the second channel hole 211 on the second side plate 21, so that the channel formed by the first channel hole 111, the annular plate 31 and the second channel hole 211 can be sealed, and has good dust and rainproof functions; in addition, by setting the placement The groove 212 and the first accommodating groove 213 can guide the deformation direction of the sealing ring 32 after being compressed, and make most of the deformed part of the sealing ring 32 enter the first accommodating groove 213 instead of entering between the annular plate 31 and the second side plate 21 (that is, avoid the deformed part of the sealing ring 32 from entering the position on the annular plate 31 and the second side plate 21 that is located on the periphery of the placement groove 212), thereby avoiding a large gap between the annular plate 31 and the second side plate 21, and the sealing ring 32 contacts the outside through the gap. This design is beneficial to prolonging the service life of the sealing ring 32, improving the sealing performance of the entire channel, and ensuring the connection stability between the annular plate 31 and the second side plate 21 after the cabinets are combined.

[0073] It is worth noting that if the deformed portion of the sealing ring 32 enters between the annular plate 31 and the second side plate 21, the deformed portion will contact the outside world through the larger gap between the annular plate 31 and the second side plate 21, causing the sealing ring 32 to be easily aged, affecting its service life and sealing performance; in addition, after the deformed portion of the sealing ring 32 enters between the annular plate 31 and the second side plate 21, the gap between each adjacent two cabinets will be different when the cabinets are combined, resulting in uneven heat dissipation and affecting the overall heat dissipation effect. Moreover, the sealing ring 32 is flexible, and after the sealing ring 32 ages, it is also easy to cause the stability of the two adjacent cabinets after the cabinets are combined.

[0074] In some exemplary embodiments, Figure 6 and Figure 7 As shown, the depth of the first receiving groove 213 is consistent with that of the placement groove 212. Among them, the placement groove 212 and the first receiving groove 213 are both formed on the side of the second side plate 21 facing the annular plate 31 and are both recessed along the first direction and toward the side away from the annular plate 31; therefore, the depth of the placement groove 212 is the size of the placement groove 212 recessed along the first direction, and the depth of the first receiving groove 213 is the size of the first receiving groove recessed along the first direction. The depth of the placement groove 212 and the depth of the first receiving groove 213 are consistent, which is conducive to the integrated processing of the first receiving groove 213 and the placement groove 212. Of course, the depth of the first receiving groove 213 can also be greater than or less than the depth of the placement groove 212, which is not particularly limited here.

[0075] As an optional solution, the first receiving groove 213 and the placement groove 212 are made in one piece, which can simplify the processing technology.

[0076] In some exemplary embodiments, Figures 3 to 5 as well as Figure 8 As shown, a second receiving groove 312 is provided on one side of the annular plate 31 facing the second side plate 21. The second receiving groove 312 is located outside the annular groove 311 away from the first channel hole 111, and the second receiving groove 312 is communicated with the annular groove 311 to accommodate a portion of the deformed portion of the sealing ring 32 after it abuts against the placement groove 212. When the sealing ring 32 is greatly deformed after abutting against the placement groove 212, and the first receiving groove 213 is difficult to accommodate all the deformed portions of the sealing ring 32, the second receiving groove 312 can be provided to accommodate a portion of the deformed portion of the sealing ring 32.

[0077] It should be noted that the second receiving groove 312 is formed on the side of the annular plate 31 facing the second side plate 21 and is recessed along the first direction and toward the side away from the second side plate 21. The design of the second receiving groove 312 can guide the partially deformed portion of the sealing ring 32 to enter the second receiving groove 312, and can prevent the deformed portion of the sealing ring 32 from entering the second side plate 21 and the annular plate 31 at the outer periphery of the second receiving groove 312, thereby preventing a large gap from existing between the annular plate 31 and the second side plate 21, and the sealing ring 32 from contacting the outside through the gap; at the same time, the partially deformed portion of the sealing ring 32 enters the second receiving groove 312, which is also conducive to blocking the gap between the annular plate 31 and the second side plate 21, and enhancing the sealing performance between the channel for the busbar to pass through after the cabinets are combined and the outside.

[0078] As an optional solution, the depth of the second receiving groove 312 is less than the depth of the annular groove 311; wherein the depth of the second receiving groove 312 is the dimension of the second receiving groove 312 being recessed along the first direction, and the depth of the annular groove 311 is the dimension of the annular groove 311 being recessed along the first direction. This structural design can ensure that the sealing ring 32 can be stably assembled on the annular plate 31 using the annular groove 311, which is convenient for assembly.

[0079] As an optional solution, the second receiving groove 312 and the annular groove 311 are made integrally, which can simplify the processing technology.

[0080] In some exemplary embodiments, Fig. 9As shown, the fixing assembly includes a stud 331 and a nut 333; the stud 331 is arranged between the first accommodating groove 213 and the second channel hole 211; one end of the stud 331 is fixed to the second side plate 21, and the other end of the stud 331 extends along the first direction and is arranged toward the first side plate 11, wherein the fixing method of the stud 331 and the second side plate 21 can be integrally made, welded or screwed, etc.; a stud hole 112 is opened on the first side plate 11, and the stud hole 112 is arranged between the annular plate 31 and the first channel hole 111; the stud 331 is coaxially arranged with the stud hole 112, and the stud 331 is locked by the nut 333 after passing through the stud hole 112, so as to fix the first side plate 11 and the second side plate 21.

[0081] As an optional solution, there are multiple fixing components, multiple stud holes 112, and the fixing components are arranged one-to-one with the stud holes 112. Using multiple fixing components to achieve locking between the cabinet connection structure 3 and two adjacent cabinets can improve the structural stability after cabinet connection.

[0082] As an optional solution, multiple fixing components are evenly arranged to facilitate connection stability after cabinets are combined.

[0083] As an optional solution, in the plurality of fixing components, the length of at least two studs extending along the first direction is greater than the length of other studs extending along the first direction. Among them, at least two studs with longer lengths can be used as positioning studs 332, that is, there are at least two positioning studs 332 in the plurality of stud groups; when merging cabinets, after two adjacent cabinets are close to each other, the assembly of at least two positioning studs 332 with corresponding stud holes 112 can ensure that other studs and their corresponding stud holes 112 can be accurately assembled together, which is conducive to improving the efficiency of cabinet merging.

[0084] It should be noted that, since the stud is arranged between the first receiving groove 213 and the second channel hole 211, the stud hole 112 is arranged between the annular plate 31 and the first channel hole 111, and the stud is locked by the nut 333 after passing through the stud hole 112, it can be known that the fixing component is on the inner side of the sealing ring 32. In order to ensure the sealing between the channel and the outside world after the cabinets are combined, the connection between the fixing component and the cabinet body also needs to be sealed, but since the fixing component is on the inner side of the sealing ring 32, the sealing effect of the sealing ring 32 can ensure the sealing between the connection between the fixing component and the cabinet body and the outside world, and then the fixing component is arranged on the inner side of the sealing ring 32 to reduce the sealing requirements of the connection between the fixing component and the cabinet body.

[0085] In some exemplary embodiments, Figures 3 to 9As shown, the outer periphery of the side of the annular plate 31 facing the second side plate 21 is provided with a first positioning surface 313; the second side plate 21 is provided with a positioning groove 214, the positioning groove 214 is sleeved on the outer periphery of the placement groove 212, and the outer peripheral surface of the positioning groove 214 is set as the second positioning surface 2141; the side of the annular plate 31 facing the second side plate 21 can be embedded in the positioning groove 214 and the first positioning surface 313 is matched with the second positioning surface 2141. The positioning and assembly by matching the first positioning surface 313 with the second positioning surface 2141 can ensure that the studs and their corresponding stud holes 112 can be accurately assembled together, which is conducive to improving the efficiency of cabinet merging.

[0086] As an optional solution, at least part of the first positioning surface 313 is an inclined surface or an arc surface that gradually converges toward the geometric center of the annular plate 31 along the first direction, and at least part of the second positioning surface 2141 is an inclined surface or an arc surface that gradually converges toward the geometric center of the positioning groove 214 along the first direction, and the first positioning surface 313 and the second positioning surface 2141 match after the cabinets are combined. Among them, the first positioning surface 313 and the second positioning surface 2141 are designed with inclined surfaces or arc surfaces, and can be assembled with guidance using the inclined surfaces or arc surfaces, which can further improve the efficiency of cabinet combination.

[0087] In some exemplary embodiments, Figures 1 to 3 As shown, after the cabinets are combined, a passage hole is reserved on the side of the outermost cabinet away from the adjacent cabinet, and the passage hole can be temporarily blocked by the cover plate 4 so that when additional cabinets are installed later, the cabinets can be connected through this passage hole according to the above embodiments.

[0088] In the exemplary embodiment of the present application, an energy storage converter cabinet is also provided, such as Figure 1 As shown, the energy storage converter cabinet is divided into a main body 5 and a PCS cabinet group arranged on one side of the main body 5. The PCS cabinet group includes a plurality of cabinets and any one or more cabinet connection structures 3 as in the above embodiments, and a cabinet connection structure 3 is respectively arranged between each two adjacent cabinets.

[0089] In the energy storage converter cabinet, by arranging a cabinet connection structure 3 between adjacent cabinets, all cabinets can together form a channel for the busbar to pass through, and the channel has good sealing performance because the cabinet connection structure 3 is provided with a sealing ring 32; and, because the annular plate 31 in the cabinet connection structure 3 is arranged between two adjacent cabinets, a gap is left between the two adjacent cabinets, which can facilitate the heat dissipation of each cabinet.

[0090] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0091] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0092] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A cabinet connection structure, arranged between two adjacent cabinets, the two adjacent cabinets are respectively a first cabinet and a second cabinet, the first cabinet has a first side panel facing the second cabinet, the second cabinet has a second side panel facing the first cabinet, the first side panel is provided with a first channel hole, the second side panel is provided with a second channel hole, the first channel hole and the second channel hole are arranged opposite to each other along a first direction, the first direction is the arrangement direction of the first cabinet and the second cabinet; characterized in that The cabinet connection structure comprises an annular plate, a sealing ring and a fixing assembly; The annular plate is arranged between the first side plate and the second side plate, and the annular plate is sleeved on the outer periphery of the first channel hole; An annular groove is formed on one side of the annular plate facing the second side plate; One end of the sealing ring is installed in the annular groove, and the other end of the sealing ring protrudes from the annular plate along the first direction and is arranged toward the second side plate; The second side plate is provided with a placement groove for placing the other end of the sealing ring, and the placement groove is sleeved on the outer periphery of the second channel hole; The contour of the placement groove away from the outer side of the second channel hole is consistent with the outer peripheral contour of the sealing ring; A first accommodating groove is further provided on the inner side of the placement groove close to the second channel hole, and the first accommodating groove is communicated with the placement groove to accommodate at least a part of the deformed portion of the sealing ring after it abuts against the placement groove; The fixing assembly is used to fix the first side plate and the second side plate so that the annular plate is located between the first side plate and the second side plate and the sealing ring is located between the annular groove and the placement groove.

2. The cabinet connection structure according to claim 1, characterized in that: The first accommodating groove has the same depth as that of the placing groove.

3. The cabinet connection structure according to claim 1, characterized in that: A second accommodating groove is provided on the side of the annular plate facing the second side plate. The second accommodating groove is located on the outer side of the annular groove away from the first channel hole, and the second accommodating groove is connected to the annular groove to accommodate a partially deformed portion of the sealing ring after it abuts against the placement groove.

4. The cabinet connection structure according to claim 3, characterized in that: The first accommodating groove is integrally formed with the placement groove, and the second accommodating groove is integrally formed with the annular groove.

5. The cabinet connection structure according to claim 1, characterized in that: The fixing assembly includes a stud and a nut; The stud is disposed between the first receiving groove and the second passage hole; One end of the stud is fixed to the second side plate, and the other end of the stud extends along the first direction and is arranged toward the first side plate; The first side plate is provided with a stud hole, and the stud hole is arranged between the annular plate and the first channel hole; The stud is coaxially arranged with the stud hole, and the stud is locked by the nut after passing through the stud hole, so as to fix the first side plate and the second side plate.

6. The cabinet connection structure according to claim 5, characterized in that: There are multiple fixing components, multiple stud holes, and the fixing components and the stud holes are arranged in a one-to-one correspondence.

7. The cabinet connection structure according to claim 6, characterized in that: The plurality of fixing components are evenly arranged.

8. The cabinet connection structure according to claim 6, characterized in that: In the plurality of fixing assemblies, at least two of the studs extend over a length along the first direction that is greater than a length of the other studs extend over the first direction.

9. The cabinet connection structure according to claim 1, characterized in that: A first positioning surface is provided on the outer periphery of the annular plate on one side facing the second side plate; The second side plate is provided with a positioning groove, the positioning groove is sleeved on the outer periphery of the placement groove, and the outer peripheral surface of the positioning groove is set as the second positioning surface; The side of the annular plate facing the second side plate can be embedded in the positioning groove and the first positioning surface matches the second positioning surface.

10. An energy storage converter cabinet, characterized in that: It comprises a plurality of cabinets and a cabinet connection structure as described in any one of claims 1 to 9, and a cabinet connection structure is provided between each two adjacent cabinets.

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