Compact group string type converter integrated cabinet

Abstract

The utility model discloses a compact string type converter integrated cabinet, which relates to the field of electric energy storage equipment, and is characterized in that a support frame is provided with two bearing layers, and each bearing layer can be used for providing support; a suspended support is arranged on each bearing layer, the bottoms of the PCS modules are supported by the suspended supports, and air inlet spaces are reserved for the bottoms of the PCS modules by the suspended supports; the distance between every two vertically adjacent supporting layers is larger than the height of the PCS module, an air outlet space is formed above the PCS module, and a power distribution cabinet is arranged on one supporting layer; according to the utility model, a double-layer layout structure is adopted, the PCS modules can be placed on the two supporting layers, and when the total number of the PCS modules is equal, the size of the whole supporting frame in the length direction can be reduced, the occupied area of the supporting frame is reduced, and the space utilization rate is higher.

Description

Technical Field

[0001] The utility model relates to the field of electric energy storage equipment, and further relates to a compact string converter integrated cabinet. Background Art

[0002] With the rapid development of the energy storage industry, the demand for large-scale ground energy storage products is increasing. As an important component of the ground energy storage system, the demand for integrated converters and boosters in the market is also rising. The PCS integrated cabinet is an indispensable part of the integrated converter and booster that adopts string-type integrated PCS (Power Conversion System).

[0003] As an important component of the string-type converter and booster, the PCS integrated cabinet is placed outdoors together with the converter and booster. Due to the limited land area of ​​the ground energy storage project site, sufficient distance needs to be reserved between the equipment to meet the needs of personnel maintenance, passage, and equipment exhaust and heat dissipation. At present, the PCS integrated cabinet structure design in the string-type converter and booster on the market is diverse, and most of them adopt a single-row and parallel arrangement. This arrangement of PCS single machine is relatively simple for the integrated cabinet structure design, but it also brings many disadvantages such as increased cabinet length, increased manufacturing costs, and increased transportation costs of the booster.

[0004] For those skilled in the art, how to reduce the floor space occupied by a compact string converter integrated cabinet is a technical problem that needs to be solved at present. Utility Model Content

[0005] The core of this utility model is to provide a compact string converter integrated cabinet, which reduces the overall space occupation through the design of double-layer placement space. The specific scheme is as follows:

[0006] A compact string converter integrated cabinet comprises a support frame and a supporting layer, wherein the support frame is provided with at least two supporting layers; a suspended bracket is arranged on each supporting layer, a PCS module is installed on the suspended bracket, and the bottom of the PCS module is supported by the suspended bracket; the distance between two upper and lower adjacent supporting layers is greater than the height of the PCS module, the suspended bracket reserves an air intake space for the bottom of the PCS module, and an air outlet space is provided above the PCS module; one of the supporting layers is provided with a power distribution cabinet;

[0007] The power distribution cabinet is arranged on the supporting layer of the lowest layer, the top plate of the power distribution cabinet is provided with a first installation hole for allowing the cables of the PCS module of the upper layer to pass through, and the side wall of the power distribution cabinet is provided with a second installation hole for allowing the cables of the PCS module of the same layer to pass through;

[0008] An air guide cover is installed on the support frame or the supporting layer, and the PCS module placed on the lower supporting layer is provided with the air guide cover, and the air guide cover is used to guide the airflow discharged from the PCS module so that the airflow is discharged obliquely downward.

[0009] Optionally, the power distribution cabinet includes a DC cabinet and an AC cabinet, and the first installation hole position and the second installation hole position are respectively set as a DC hole position and an AC hole position.

[0010] Optionally, the suspended bracket includes a support frame and a limit plate, the support frame includes a bottom plate, a vertical plate, a horizontal support plate and a rib plate, the bottom plate is fixedly assembled on the supporting layer, the bottom of the vertical plate is vertically fixed to the bottom plate, and the top is fixed to the horizontal support plate, and the rib plate is vertically fixed to the bottom plate, the vertical plate and the horizontal support plate respectively; the vertical plate is provided with a plurality of notches for air to pass through;

[0011] The limiting plate is supported by the two transverse supporting plates and positions the two sides of the PCS module.

[0012] Optionally, one PCS module is supported and limited by two of the limiting plates, and sliding bars for slidingly contacting and cooperating with the limiting plates are respectively arranged on both sides of the bottom surface of the PCS module.

[0013] Optionally, a baffle can be detachably installed on the support frame, and each supporting layer is respectively provided with the baffle to block and limit the front and rear sides of the PCS module placed on the supporting layer; and each PCS module is fixed by bolts.

[0014] Optionally, two baffles are arranged on the rear side of each supporting layer where the PCS modules are placed, and one baffle is arranged on the front side;

[0015] A cable cover is provided on the front side of the PCS module.

[0016] Optionally, the top of the support frame has no upper cover, so as to provide an open space for the top air outlet of the uppermost PCS module.

[0017] Optionally, heat insulation cotton is bonded to the surface of the supporting layer.

[0018] The utility model provides a compact string converter integrated cabinet, wherein a support frame is provided with two supporting layers, each supporting layer can be used to provide support; a suspended bracket is arranged on each supporting layer, the bottom of a PCS module is supported by the suspended bracket, and the suspended bracket reserves an air intake space for the bottom of the PCS module; a distance between two upper and lower adjacent supporting layers is greater than a height of the PCS module, an air outlet space is provided above the PCS module, and a distribution cabinet is provided on one supporting layer; the utility model adopts a double-layer layout structure, PCS modules can be placed on both supporting layers, and when the total number of PCS modules is equal, the size of the entire supporting frame in the length direction can be reduced, the floor area of ​​the supporting frame can be reduced, and the space utilization rate is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is an overall axonometric schematic diagram of an embodiment of the compact string converter integrated cabinet of the utility model;

[0021] Figure 2 It is an overall axonometric schematic diagram from another perspective of an embodiment of the compact string converter integrated cabinet of the utility model;

[0022] Figure 3 It is an overall front view of an embodiment of the compact string converter integrated cabinet of the utility model;

[0023] Figure 4 It is an overall side view of an embodiment of the compact string converter integrated cabinet of the utility model;

[0024] Figure 5 It is an overall top view of an embodiment of the compact string converter integrated cabinet of the utility model;

[0025] Figure 6 This is an overall front view of an embodiment of a compact string converter integrated cabinet of the utility model with a converter installed;

[0026] Figure 7 This is an overall side view of an embodiment of a compact string converter integrated cabinet of the utility model with a converter installed;

[0027] Figure 8 This is an upper plan view of an embodiment of a compact string converter integrated cabinet of the utility model, in which a converter is installed;

[0028] Fig. 9 This is a top view of the lower floor of an embodiment of the compact string converter integrated cabinet of the utility model;

[0029] Fig.10 It is an axonometric diagram of an embodiment of a suspended bracket;

[0030] Fig.11 It is an axonometric diagram of an embodiment of a support frame;

[0031] Fig.12 This is an axonometric schematic diagram of an embodiment of an air guide cover.

[0032] The figure includes:

[0033] Support frame 1, supporting layer 2, distribution cabinet 21, first mounting hole 22, second mounting hole 23, suspended bracket 3, support frame 31, bottom plate 311, vertical plate 312, horizontal support plate 313, rib plate 314, limit plate 32, air guide cover 4, baffle 5. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the compact string converter integrated cabinet of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Combination Figure 1 , Figure 2 As shown, the utility model provides a compact string-type converter integrated cabinet, including a support frame 1 and a supporting layer 2. The support frame 1 is a load-bearing structure and can be placed on the ground or other locations. The support frame 1 has a certain load-bearing capacity, and the support frame 1 can provide space for the installation and placement of other structures. The support frame 1 is installed with at least two supporting layers 2. The supporting layer 2 and the support frame 1 can be two independent components that are assembled and formed later, or they can be integrally processed, that is, the supporting layer 2 is a part of the support frame 1. The supporting layers 2 are distributed in an upper and lower interval, and different supporting layers 2 have different height positions. It should be noted that the support frame 1 is installed with two supporting layers 2, that is, at least two supporting layers 2 are arranged on the support frame 1, and a larger number of supporting layers 2 can also be arranged. The supporting layer 2 plays the role of spacing support, and can be a solid plate, or a plurality of through holes can be provided. The utility model is mainly combined with Figure 1 , Figure 2 The structure with two supporting layers 2 shown in the figure is used for explanation, but it does not mean that only two supporting layers 2 can be provided.

[0036] Combination Figure 3 , Figure 4, a suspended bracket 3 is arranged on each supporting layer 2, the suspended bracket 3 is fixed to the supporting layer 2, the suspended bracket 3 is arranged on the upper surface of the supporting layer 2, the PCS module is installed on the suspended bracket 3, the bottom of the PCS module is supported by the suspended bracket 3, the gravity of the PCS module is pressed on the suspended bracket 3 and transmitted downward to the supporting layer 2, and the supporting layer 2 transmits gravity to the supporting frame 1. Due to the spacing of the suspended bracket 3, a certain space interval is formed between the bottom surface of the PCS module and the supporting layer 2. The PCS modules are all installed vertically, with bottom air intake and top air outlet, which meets the needs of air circulation and allows air flow to flow into the PCS module from the lower interval for cooling.

[0037] The distance between the two adjacent supporting layers 2 is greater than the height of the PCS module. When the PCS module is installed on the suspended bracket 3, there is still a certain gap between the supporting layer 2 and the PCS module below it. The suspended bracket 3 separates the air inlet at the bottom of the PCS module from the supporting layer 2, leaving air intake space at the bottom of the PCS module. There is enough distance between the top surface of the PCS module and the supporting layer 2 above it, providing air outlet space. Figure 6 , Figure 7 As shown, the airflow enters the PCS module from the bottom and is discharged from the PCS module from the top. The airflow can cool the PCS module to meet the needs of air cooling and heat dissipation.

[0038] Among the multiple supporting layers 2, one of the supporting layers 2 is provided with a distribution cabinet 21; the PCS module enters and exits the AC and DC power cables through the front junction box, and the AC and DC wiring harnesses are routed in the lower space of the PCS module. The power cables are all cables that can be used outdoors. After the power cables of all PCS modules are converged in the distribution cabinet 21, they pass through the frame circuit breaker and are then connected to the transformer end copper bus through the output copper bus.

[0039] At present, there are various structural designs of PCS integrated cabinets in string-type converters and boosters on the market, most of which are arranged in a single row in parallel. This arrangement of PCS units is relatively simple for the integrated cabinet structure design, but it also brings many disadvantages such as increased cabinet length, increased manufacturing costs, and increased transportation costs of the booster. The compact string converter integrated cabinet of the utility model utilizes the structural design of two supporting layers 2 and the height space. When the number of PCS modules is equal, the floor space of the entire rack is reduced, that is, the projection area formed on the horizontal plane is smaller, and the space utilization rate is higher.

[0040] On the basis of the above scheme, the power distribution cabinet 21 of the utility model is arranged on the lower supporting layer 2, and the power distribution cabinet 21 is located at a lower position. The power distribution cabinet 21 is shielded by the PCS module above and the supporting layer 2, thereby forming a better protection effect for the internal electrical structure.

[0041] Combination Figure 5 , Fig. 9 As shown, the top plate of the power distribution cabinet 21 is provided with a first mounting hole 22 for the cables of the upper PCS module to pass through; the first mounting hole 22 is arranged vertically, and the cables of the upper PCS module pass through the first mounting hole 22 and enter the power distribution cabinet 21 downward. The side wall of the power distribution cabinet 21 is provided with a second mounting hole 23 for the cables of the PCS module on the same layer to pass through, and the cables of the lower PCS module pass through the second mounting hole 23 and enter the power distribution cabinet 21 horizontally. The first mounting hole 22 and the second mounting hole 23 are respectively installed with cable glands, and the power cable of the PCS module on the upper part of the rack passes through the cable gland on the upper cover plate in the middle of the rack to enter the lower power distribution cabinet, and the power line of the PCS module on the lower part of the rack passes through the cable gland on the right side panel to enter the power distribution cabinet.

[0042] The power distribution cabinet 21 includes a DC cabinet and an AC cabinet. The first installation hole position 22 and the second installation hole position 23 are respectively set with a DC hole position and an AC hole position. Each PCS module leads out a DC cable and an AC cable respectively. Multiple PCSs lead out multiple DC cables and finally connect to the DC cabinet. Multiple PCSs lead out multiple AC cables and finally connect to the AC cabinet.

[0043] Combination Fig.10 , Fig.11 As shown, the suspended bracket 3 provided by the utility model includes a support frame 31 and a limit plate 32. The support frame 31 includes a bottom plate 311, a vertical plate 312, a horizontal support plate 313 and a rib plate 314. The bottom plate 311 and the horizontal support plate 313 are horizontal plates, and the vertical plate 312 and the rib plate 314 are vertical plates. The bottom plate 311 is fixedly assembled on the supporting layer 2. The bottom plate 311 can be fixed by bolts or welding. The bottom of the vertical plate 312 is vertically fixed to the bottom plate 311, and the top is fixed to the horizontal support plate 313. The rib plate 314 is vertically fixed to the bottom plate 311, the vertical plate 312 and the horizontal support plate 313 respectively; wherein the bottom plate 311, the vertical plate 312 and the horizontal support plate 313 can be formed by bending the same plate sheet metal. The vertical plate 312 is provided with a number of gaps for air to pass through. By reducing the obstruction of air through these gaps, the air resistance can be effectively reduced, so that the air can flow into the PCS module more smoothly.

[0044] Combination Fig.10 The limit plate 32 is supported by two horizontal support plates 313 and positions the two sides of the PCS module; the suspended bracket 3 includes two symmetrically arranged support frames 31, and the two ends of the limit plate 32 are supported by the two support frames 31, respectively, supporting the left and right sides of the PCS module, providing a more stable support effect. At the same time, the limit plate 32 protrudes vertically upward to set a retaining rib, which can provide a limit for the left and right sides of the PCS module, so that several PCS modules in the same row are arranged in an array.

[0045] A PCS module is supported and limited by two limit plates 32, and slide bars for sliding contact and cooperation with the limit plates 32 are respectively arranged on both sides of the bottom surface of the PCS module. The limit plates 32 can have different forms. For the limit plate 32 arranged between the two PCS modules, a curved blocking platform is formed by bending a plate, which can limit the two PCS modules respectively, and two flat support plates are formed on the left and right sides respectively to support the two PCS modules respectively; because the distance between the slide bar structure arranged below the left and right sides of the PCS module and the edge is different, the width of the two flat support plates of the limit plate 32 is different to ensure the support of the slide bar. For the limit plate 32 that only needs one PCS module at the end, a bending structure formed by bending a plate can be used.

[0046] Combination Figure 6 , Figure 7 As shown, a baffle 5 is detachably mounted on the support frame 1, and each supporting layer 2 is provided with a corresponding baffle 5, which is used to block and limit the PCS module placed on the supporting layer 2 from the front and rear sides, respectively. Each baffle 5 is fixed to each PCS module by bolts to ensure a stable connection. The baffle 5 extends horizontally, and the two ends of the baffle 5 are respectively fixed to the support frame 1. Each PCS module is respectively fixed to the baffle 5 by bolts, which can fix the PCS module in the front and rear directions, and cooperate with the left and right limits of the limit plate 32 to position the four sides of the PCS module.

[0047] Specifically, two baffles 5 are arranged on the rear side of the PCS module placed on each supporting layer 2 of the utility model, and one baffle 5 is arranged on the front side; the two baffles 5 on the rear side are arranged one high and one low, respectively forming two fixing points on the rear side of the PCS module, and one fixing point is formed on the front side of the PCS module through one baffle 5. A cable cover is arranged on the front side of the PCS module, and the cable cover is located in the space below the front baffle 5. In order to avoid the cable cover, only one baffle 5 is arranged on the front side.

[0048] The support frame 1 or the support layer 2 is provided with an air guide 4, which is used to guide the airflow discharged from the PCS module so that the airflow is discharged diagonally downward. Generally speaking, the PCS module placed on the top support layer 2 does not need to be provided with an air guide 4 so that the airflow is discharged upward, while the PCS modules placed on the other lower support layers 2 need to be provided with an air guide 4. Figure 5 , Figure 6 , Figure 7 As shown, an air guide 4 is respectively provided at the three sides of the entire support frame 1, and the air guide 4 is used to guide the hot air flow discharged from the PCS module at the lower layer, so as to reduce the hot air flow being directly discharged upward and being sucked into the PCS module at the upper layer, thereby affecting the heat dissipation effect of the PCS module at the upper layer. Fig.12As shown, the air guide cover 4 is provided with an arc-shaped curved panel, and two baffles are respectively arranged at its two ends. Its core function is to separate the airflows of the upper and lower PCS modules to prevent the hot airflow discharged from the lower PCS module from entering the upper PCS module.

[0049] Combination Figure 6 , Figure 7 , Figure 8 As shown, there is no upper cover on the top of the support frame 1, so that the top of the PCS module on the uppermost layer provides an open space for air outlet, and the hot air flow discharged by the upper PCS module blows vertically upward; the upper PCS module and the lower PCS module are not provided with side walls to block them, and can freely exchange air with the outside world.

[0050] The hot air flow of the lower PCS module is directly blown upward to the supporting layer 2, and heat insulation cotton is bonded to the surface of the supporting layer 2 to reduce the heat transfer upward.

[0051] The compact string converter integrated cabinet of the utility model has a smaller overall length, thereby making the converter and booster integrated machine smaller in length. For customers, the whole machine occupies a smaller area, and projects with the same capacity requirements require a smaller land area, which is more economical and friendly. For suppliers, the manufacturing and transportation costs are reduced.

[0052] The compact string converter integrated cabinet of the utility model divides the PCS into two parts, upper and lower, and can meet the requirements of PCS with bottom air inlet and top air outlet structure and PCS with bottom air inlet and upper front and rear air outlet arranged side by side. The upper and lower PCS are both installed vertically, and the upper and lower space structure designs meet the PCS air inlet and exhaust heat dissipation requirements. The compact string converter integrated cabinet of the utility model has a compact overall structure, a reasonable design, a reasonable PCS power line routing, and a higher space utilization rate.

[0053] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A compact string converter integrated cabinet, characterized in that: The invention comprises a support frame (1) and a supporting layer (2), wherein the support frame (1) is provided with at least two supporting layers (2); a suspended bracket (3) is arranged on each supporting layer (2), a PCS module is installed on the suspended bracket (3), and the bottom of the PCS module is supported by the suspended bracket (3); the distance between two upper and lower adjacent supporting layers (2) is greater than the height of the PCS module, the suspended bracket (3) reserves an air intake space at the bottom of the PCS module, and an air outlet space is provided above the PCS module; and one of the supporting layers (2) is provided with a power distribution cabinet (21); The power distribution cabinet (21) is arranged on the bottommost supporting layer (2), the top plate of the power distribution cabinet (21) is provided with a first installation hole (22) for allowing cables of the PCS module on the upper layer to pass through, and the side wall of the power distribution cabinet (21) is provided with a second installation hole (23) for allowing cables of the PCS module on the same layer to pass through; An air guide hood (4) is installed on the support frame (1) or the supporting layer (2), and the PCS module placed on the lower supporting layer (2) is provided with the air guide hood (4), and the air guide hood (4) is used to guide the airflow discharged by the PCS module so that the airflow is discharged obliquely downward.

2. The compact string converter integrated cabinet according to claim 1, characterized in that: The power distribution cabinet (21) comprises a DC cabinet and an AC cabinet, and the first installation hole position (22) and the second installation hole position (23) are respectively provided with a DC hole position and an AC hole position.

3. The compact string converter integrated cabinet according to claim 1, characterized in that: The suspended bracket (3) comprises a support frame (31) and a limit plate (32); the support frame (31) comprises a bottom plate (311), a vertical plate (312), a horizontal support plate (313) and a rib plate (314); the bottom plate (311) is fixedly assembled on the supporting layer (2); the bottom of the vertical plate (312) is vertically fixed to the bottom plate (311) and the top is fixed to the horizontal support plate (313); the rib plate (314) is vertically fixed to the bottom plate (311), the vertical plate (312) and the horizontal support plate (313) respectively; the vertical plate (312) is provided with a plurality of notches for air to pass through; The limiting plate (32) is supported by the two transverse supporting plates (313) and positions the two sides of the PCS module.

4. The compact string converter integrated cabinet according to claim 3, characterized in that: A PCS module is supported and limited by two limit plates (32), and two sides of the bottom surface of the PCS module are respectively provided with slide bars for sliding contact and cooperation with the limit plates (32).

5. The compact string converter integrated cabinet according to claim 1, characterized in that: The support frame (1) is provided with a detachable baffle (5), and each supporting layer (2) is provided with a corresponding baffle (5) for blocking and limiting the front and rear sides of a PCS module placed on the supporting layer (2); and each PCS module is fixed by bolts.

6. The compact string converter integrated cabinet according to claim 5, characterized in that: Two baffles (5) are arranged on the rear side of each supporting layer (2) on which the PCS modules are placed, and one baffle (5) is arranged on the front side; A cable cover is provided on the front side of the PCS module.

7. The compact string converter integrated cabinet according to claim 1, characterized in that: The top of the support frame (1) has no upper cover, so as to provide an open space for the top of the PCS module on the uppermost layer to discharge air.

8. The compact string converter integrated cabinet according to claim 1, characterized in that: Heat insulation cotton is bonded to the surface of the supporting layer (2).

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