Air-cooled string type boost converter integrated machine

Abstract

The application belongs to the technical field of energy storage cabinets, and particularly relates to a forced air cooling group string type voltage boosting and current conversion integrated machine, which comprises a cabinet main frame, a PCS assembly area, a transformer area, a high-voltage area and a low-voltage area. The cabinet main frame is a 20-foot standard container. The PCS assembly area comprises 24 PCS units. The 24 PCS units are divided into two groups. Each group comprises upper PCS components and lower PCS components, and the two groups are installed in a mirror image relationship. The 24 PCS units are reasonably divided into two groups, and an up-down distribution and mirror image symmetry layout mode is adopted. The limited space inside the 20-foot standard container is fully utilized. The whole machine adopts an optimized double-air-duct heat dissipation structure. Combined with the collaborative layout of the PCS bus area and the air duct baffle, efficient forced air cooling heat dissipation is realized, and the temperature rise problem in a compact space is solved.

Description

Technical Field

[0001] This application belongs to the field of energy storage cabinet technology, specifically relating to an air-cooled string boost converter integrated machine. Background Technology

[0002] With the rapid development and globalization of the energy storage industry, the demand for energy storage equipment exports is increasing. In the international transportation and deployment of energy storage equipment, adapting to standard container specifications has become a key factor in reducing logistics costs. Currently, mainstream 5MW boost converter systems on the market generally adopt 40-foot or non-standard container designs, resulting in large product footprints, high transportation costs, and difficulty in meeting the cost control requirements of the international market. Meanwhile, existing 20-foot centralized energy storage systems lack independent control capabilities for cluster-level power modules, leading to circulating current losses between battery clusters and affecting system efficiency. Furthermore, the subsequent maintenance of existing systems requires complete system shutdown, increasing maintenance costs and reducing system availability. Although there have been attempts to develop 20-foot air-cooled string boost converter systems, the compact space makes PCS layout difficult, and air cooling cannot meet the heat dissipation requirements of the devices, resulting in unresolved temperature rise issues. Additionally, the 20-foot container size limit presents technical challenges for PCS assembly, combiner cabinet design, and transformer installation. Utility Model Content

[0003] The technical problem to be solved by this application is to provide an air-cooled string boost converter integrated machine.

[0004] This application provides an air-cooled string step-up converter integrated unit, including a main cabinet frame, a PCS assembly area, a transformer area, a high-voltage area, and a low-voltage area. The main cabinet frame is a 20-foot standard container. The PCS assembly area includes 24 PCS units, which are divided into two groups. Each group includes an upper PCS component and a lower PCS component, and the two groups are installed in a mirror relationship.

[0005] Optionally, the PCS assembly area further includes a PCS mounting frame, PCS components, and a busbar assembly component. The PCS mounting frame includes a main beam frame, a PCS busbar area, a connecting channel, and an air duct.

[0006] Optionally, the main beam frame is composed of horizontal beams and vertical beams. The horizontal beams include a first horizontal beam, a second horizontal beam, a third horizontal beam, a fourth horizontal beam, and a fifth horizontal beam. The first horizontal beam is provided with mounting holes for fixing to the bottom surface of the main frame of the cabinet. The second horizontal beam is provided with a top beam frame mounting hole, a PCS first mounting hole, and a frame hoisting hole.

[0007] Optionally, the third crossbeam is an upper PCS mounting support, with first folded edges on both sides, first tying holes on the first folded edges, first mounting holes on the third crossbeam, and a limiting folding plate.

[0008] Optionally, the fourth and fifth crossbeams are lower PCS mounting supports. The fourth crossbeam has two second folded edges downward, and the second folded edges have second wire binding holes. The mounting surface has a second PCS mounting hole and a limiting fold plate. The fifth crossbeam has two folded edges, and the folded edges have third wire binding holes and a limiting fold plate.

[0009] Optionally, the PCS busbar area is a closed cabinet with a busbar passage on the right side. After the two sets of PCS are combined in the cabinet, they are connected to the transformer from the right side through the busbar. The busbar cabinet has two double doors at the front and back, each with a grid. The top of the busbar area is sloping.

[0010] Optionally, the PCS busbar area has a first cable passage hole at the top, a second cable passage hole on the left side of the busbar area, and a structural waterproof cable passage channel.

[0011] Optionally, the connection channel includes a channel support and a channel cover, and the connection channel is installed from the inside of the PCS busbar junction area to the outside of the busbar passage channel.

[0012] Optionally, the air duct includes a first air duct and a second air duct. The first air duct includes a first air duct baffle, a second air duct baffle, a third air duct baffle, an eighth air duct baffle, a top of the confluence area, a sixth air duct baffle, and a seventh air duct baffle. The second air duct includes a side wall of the PCS confluence area, a fourth air duct baffle, a fifth air duct baffle, a sixth air duct baffle, an air duct assembly, and a seventh air duct baffle.

[0013] Optionally, the air duct assembly includes a first air duct assembly and a second air duct assembly. The first air duct assembly is provided with air duct mounting holes and two rows of holes on its side, namely the first air duct mounting hole and the second air duct mounting hole. When the second air duct assembly is installed using the first air duct mounting hole, it is in the air duct usage state; when the second air duct assembly is installed using the second air duct mounting hole, it is in the shipping and transportation state.

[0014] The beneficial effects of this application are as follows: by rationally dividing the 24 PCS units into two groups and adopting a vertically distributed, mirror-symmetrical layout, the limited space inside a 20-foot standard container is fully utilized, significantly reducing the overall size of the unit while meeting the 5MW power rating, thus reducing transportation and deployment costs; each PCS unit has cluster-level independent control capabilities, effectively eliminating inter-cell circulating currents and improving the overall system efficiency and safety; at the same time, the whole unit adopts an optimized dual-airflow cooling structure, combined with the coordinated layout of the PCS busbar area and airflow baffles, to achieve efficient air cooling and solve the temperature rise problem in a compact space; in addition, the modular design supports independent maintenance of a single PCS unit without the need for the entire unit to be shut down, greatly improving system availability and ease of operation and maintenance, while also having a high degree of integration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the air-cooled string boost converter integrated machine provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the PCS assembly area provided in an embodiment of this application; Figure 3 This is a schematic diagram of the PCS mounting frame provided in the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the PCS component provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the first crossbeam provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the second crossbeam provided in an embodiment of this application; Figure 7 This is a structural schematic diagram of the third crossbeam provided in an embodiment of this application; Figure 8 This is a structural schematic diagram of the fourth crossbeam provided in an embodiment of this application; Figure 9 This is a structural schematic diagram of the fifth crossbeam provided in an embodiment of this application; Figure 10 This is a first-view structural schematic diagram of the PCS busbar provided in an embodiment of this application; Figure 11 This is a structural schematic diagram of the PCS busbar region from a second perspective, provided in an embodiment of this application. Figure 12 This is a schematic diagram of the connection channel provided in an embodiment of this application; Figure 13 This is an exploded structural diagram of the air duct assembly provided in the embodiments of this application; Figure 14 This is a schematic diagram of the rear structure of the air duct assembly provided in an embodiment of this application.

[0016] In the diagram: 1. Main cabinet frame; 2. PCS assembly area; 3. Transformer area; 4. High voltage area; 5. Low voltage area; 6. PCS assembly; 7. PCS mounting frame; 8. Busbar assembly assembly; 9. Upper PCS assembly; 10. Lower PCS assembly; 11. First PCS assembly; 12. Second PCS assembly; 13. Third PCS assembly; 14. Fourth PCS assembly; 15. Main beam frame; 16. Connecting channel; 17. Air duct; 18. P CS busbar area; 19. First crossbeam; 20. Second crossbeam; 21. Third crossbeam; 22. Fourth crossbeam; 23. Fifth crossbeam; 24. Mounting hole; 25. Reinforcing rib; 26. Top beam frame mounting hole; 27. Frame hoisting hole; 28. PCS first mounting hole; 29. ​​Limiting folding plate; 30. First wire binding hole; 31. First mounting hole; 32. First folded edge; 33. Second folded edge; 34. Second wire binding hole; 35. PCS second mounting hole; 36. 37. Third fold edge; 38. Fourth fold edge; 39. Third cable tie hole; 40. PCS third mounting hole; 41. Busbar cable passage; 42. Double door; 43. Grid; 44. Top of the busbar area; 45. First cable passage hole; 46. Second cable passage hole; 47. Structural waterproof cable passage; 48. Passage support; 49. Passage cover plate; 50. First air duct; 51. Second air duct; 52. First air duct baffle; 53. Second air duct baffle; 54. Third air duct baffle 54. Fourth duct baffle; 55. Fifth duct baffle; 56. Sixth duct baffle; 57. Duct assembly; 58. Seventh duct baffle; 59. First duct assembly; 60. Second duct assembly; 61. Protective cover; 62. First duct mounting hole; 63. Second duct mounting hole; 64. Eighth duct baffle; 65. Duct mounting hole; 66. Folding plate; 67. Drain outlet; 68. Handle; 69. Second duct mounting hole; 70. PCS manifold sidewall. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] like Figure 1-14 As shown, the air-cooled string step-up converter provided in this application includes a main cabinet frame 1, a PCS assembly area 2, a transformer area 3, a high-voltage area 4, and a low-voltage area 5. The main cabinet frame 1 is a 20-foot standard container. The PCS assembly area 2 includes 24 PCS units, which are divided into two groups. Each group includes an upper PCS component 9 and a lower PCS component 10, and the two groups are installed in a mirror relationship.

[0019] Compared with existing technologies, the air-cooled string boost converter provided in this application, by rationally dividing 24 PCS units into two groups and adopting a vertically distributed, mirror-symmetrical layout, makes full use of the limited space inside a 20-foot standard container. While meeting the 5MW power level, it significantly reduces the overall size of the unit, thereby reducing transportation and deployment costs. Each PCS unit has cluster-level independent control capabilities, effectively eliminating inter-cell circulating currents and improving the overall system efficiency and safety. At the same time, the unit adopts an optimized dual-airflow 17 heat dissipation structure, combined with the coordinated layout of the PCS combiner area 18 and the airflow 17 baffle, to achieve efficient air cooling and solve the temperature rise problem in a compact space. In addition, the modular design supports independent maintenance of a single PCS unit without the need for the entire unit to be shut down, greatly improving system availability and ease of operation and maintenance, while also having a high degree of integration.

[0020] It should be noted that the upper PCS component 9 includes a first PCS component 11 and a second PCS component 12 that are mirror-symmetric; the lower PCS component 10 includes a third PCS component 13 and a fourth PCS component 14 that are mirror-symmetric.

[0021] In one possible implementation, the PCS assembly area 2 also includes a PCS mounting frame 7, a PCS component 6, and a busbar assembly component 8. The PCS mounting frame 7 includes a main beam frame 15, a PCS busbar area 18, a connecting channel 16, and an air duct 17.

[0022] Specifically, the PCS assembly area 2 adopts a modular structural design, using the PCS mounting frame 7 as the core support carrier, integrating four major functional modules: the main beam frame 15, the PCS busbar area 18, the connecting channel 16, and the air duct 17, to achieve a compact layout with high density and high reliability. Specifically, the main beam frame 15 consists of multiple horizontal and vertical beams, providing a stable mounting base for the 24 PCS components 6 in the upper and lower layers. It also ensures precise positioning of the PCS units in the front-to-back and left-to-right directions and facilitates wiring through the setting of limiting folds, wire ties, and multi-level mounting holes. The PCS busbar area 18 adopts a closed cabinet structure with double doors and a grid 42, internally completing the current convergence of the two sets of PCS before unified output, avoiding the complex external connections between traditional dual busbar cabinets, simplifying installation and improving safety. The connecting channel 16 adopts a prefabricated design, where the transformer is hoisted first and then the channel support 47 and cover plate are installed, effectively solving the problem of spatial interference between the transformer and the junction area. The air duct 17, through the independent isolation design of the first air duct 49 and the second air duct 50, completely separates the air outlet path of the bottom PCS from the air inlet path of the top PCS. With the air duct component 57 with switchable mounting holes, the size is narrowed in the transportation state and unfolded in the use state to form an efficient heat dissipation channel, taking into account both the transportation compliance of the 20-foot container and the temperature control performance under operating conditions.

[0023] In one possible implementation, the main beam frame 15 consists of horizontal beams and vertical beams. The horizontal beams include a first horizontal beam 19, a second horizontal beam 20, a third horizontal beam 21, a fourth horizontal beam 22, and a fifth horizontal beam 23. The first horizontal beam 19 is provided with mounting holes 24 for mounting and fixing to the bottom surface of the cabinet main frame 1, and is also provided with reinforcing ribs 25. The second horizontal beam 20 is provided with a top beam frame mounting hole 26, a PCS first mounting hole 28, and a frame hoisting hole 27.

[0024] Specifically, the main beam frame 15 serves as the load-bearing skeleton of the PCS installation frame 7, achieving a refined division of structural functions through the scientific division of beam levels. The first beam 19, located at the bottom, has mounting holes 24 connecting to the bottom surface of the main frame 1, ensuring the entire PCS installation frame 7 is firmly anchored to the 20-foot container floor. The second beam 20, located at the top, integrates top beam frame mounting holes 26 for connection to the top of the container, enhancing overall rigidity. It also features PCS first mounting holes 28 for fixing upper-level PCS units and frame lifting holes 27, facilitating the overall lifting into the container after PCS pre-assembly at the factory, significantly improving assembly efficiency and precision. The third, fourth, and fifth beams 23 serve as mounting supports for the upper and lower PCS components 10, respectively, and, in conjunction with limiting flanges and multi-directional mounting holes 24, achieve precise positioning and reliable fixing of the PCS units in the vertical and horizontal directions.

[0025] In one possible implementation, the third crossbeam 21 is an upper PCS mounting support, with first folded edges 32 on both sides, first wire binding holes 30 on the first folded edges 32, and the third crossbeam 21 has first air duct mounting holes 62 and a limiting folding plate 29.

[0026] Specifically, the third crossbeam 21 serves as a key mounting support for the upper PCS module 9, and its structure is optimized to balance installation stability, wiring standardization, and assembly precision. The first folded edges 32 on both sides not only enhance the structural rigidity of the crossbeam but also provide first cable tying holes 30 for orderly bundling and guiding the control and power cables of the upper PCS unit, preventing messy cables from interfering with the heat dissipation duct 17 or affecting maintenance operations. The first mounting holes 62 on the body of the third crossbeam 21 are used to precisely fix the bottom mounting points of the PCS module, ensuring that the equipment is shock-resistant and prevents loosening during operation. At the same time, the limiting folding plate 29 provides physical restraint for the PCS module 6 in the front-back or left-right directions, preventing displacement during transportation vibration or operating conditions and improving system reliability.

[0027] In one possible implementation, the fourth crossbeam 22 and the fifth crossbeam 23 serve as mounting supports for the lower PCS. The fourth crossbeam 22 has two downward-facing second folded edges 33, each with a second wire-tying hole 34. The mounting surface has a second PCS mounting hole 35 and a limiting plate 29. The fifth crossbeam 23 has two folded edges, namely a third folded edge 36 and a fourth folded edge 37, each with a third wire-tying hole 38. The third folded edge 36 faces downward, and the fourth folded edge 37 faces upward. The second folded edge 37 can limit the installation of the PCS in the front-back direction. The fifth crossbeam 23 has a limiting plate 29 for limiting the PCS installation in the left-right direction. The fifth crossbeam 23 also has a third PCS mounting hole 39.

[0028] Specifically, the fourth crossbeam 22 and the fifth crossbeam 23 work together to form a stable mounting platform for the lower PCS component 10, with a refined structural design that balances load-bearing, limiting, and wiring functions. The fourth crossbeam 22 extends downward with two second folded edges 33, which not only enhances the bending stiffness of the crossbeam but also provides second cable ties 34 on the folded edges, facilitating the neat laying of cables from the lower PCS units along the structural edge and preventing cables from drooping and obstructing the air duct 17 or affecting maintenance space. Its mounting surface integrates the second PCS mounting hole 35 for fixing the bottom of the PCS module, and works with the limiting fold plate 29 to achieve precise positioning and anti-displacement constraint in the left and right directions. The fifth crossbeam 23 also has two folded edges with third cable ties 38 on them, further optimizing the cable management path, and using the limiting fold plate 29 to laterally limit the PCS component 6, ensuring that multiple PCS units maintain installation consistency and operational stability even in a compact layout.

[0029] In one possible implementation, the PCS combiner area 18 is a closed cabinet with a busbar passage 40 on the right side. After the two sets of PCS combine in the cabinet, they are connected to the transformer through the busbar on the right side. The combiner cabinet has two double doors 41 at the front and back, each with a grid 42. The top 43 of the combiner area is a slope.

[0030] Specifically, the PCS busbar area 18 is a closed cabinet with a busbar cable passage 40 on the right side, enabling short-path access of the output current from the two sets of PCS to the transformer, reducing impedance and interference. The front and rear double doors 41 with grilles 42 facilitate maintenance and provide ventilation and heat dissipation. The top features a sloping design to prevent condensation buildup and provides space for the air duct 17 and wiring. This structure efficiently integrates electrical busbars, maintenance accessibility, and thermal management functions within a 20-foot container, supporting high power density and high availability for the entire unit.

[0031] In one possible implementation, the PCS busbar 18 has a first cable pass-through hole 44 at the top, a second cable pass-through hole 45 on the left side of the busbar, and a structural waterproof cable pass-through channel 46.

[0032] Specifically, in this implementation, the PCS busbar area 18 is provided with a first cable pass-through hole 44 (located at the top) and a second cable pass-through hole 45 (located on the left side), which are used to connect the upper PCS signal / control cables and the low-voltage or communication lines on the left side, respectively, so as to realize the partitioned introduction and orderly wiring of cables with different functions; at the same time, all cable pass-through holes are integrated with structural waterproof cable pass-through channels 46, which adopt a labyrinth-type or sealing ring structure, so as to effectively block the intrusion of external environment such as rainwater and dust while ensuring the convenience of cable passing through, and meet the IP protection level requirements.

[0033] In one possible implementation, the connection channel 16 includes a channel support 47 and a channel cover 48, and the connection channel 16 is installed from the inside of the PCS busbar junction area 18 to the outside of the busbar passage channel 40.

[0034] Specifically, the connecting channel 16 adopts a split structure, consisting of a channel support 47 and a channel cover 48. During installation, the channel support 47 is first fixed from the inside of the PCS busbar junction area 18 to the outside of the busbar passage channel 40, reserving sufficient space for subsequent transformer hoisting. After the transformer is in place and the busbar connection is completed, the channel cover 48 is installed to form a closed and reliable electrical connection path. This prefabricated design effectively solves the problem of traditional integrated channels hindering transformer hoisting, taking into account both the rationality of the construction sequence and the convenience of on-site assembly, while ensuring the protection and safety of the busbar connection area, and improving the overall integration efficiency and maintainability.

[0035] In one possible implementation, the air duct 17 includes a first air duct 49 and a second air duct 50. The first air duct 49 includes a first air duct baffle 51, a second air duct baffle 52, a third air duct baffle 53, an eighth air duct baffle 64, a top of the confluence zone 43, a sixth air duct baffle 56, and a seventh air duct baffle 58. The second air duct 50 includes a PCS confluence zone sidewall 70, a fourth air duct baffle 54, a fifth air duct baffle 55, a sixth air duct baffle 56, an air duct assembly 57, and a seventh air duct baffle 58.

[0036] Specifically, the air duct system 17 is divided into a first air duct 49 and a second air duct 50, which are isolated from each other and serve the independent heat dissipation needs of the upper and lower PCS units, respectively. The first air duct 49 is formed by the top 43 of the confluence area and multiple air duct 17 baffles, guiding the air intake of the upper PCS and directional exhaust; the second air duct 50 relies on the side wall 70 of the PCS confluence area, combined with multiple air duct baffles and adjustable air duct components 57, to construct a dedicated air exhaust path for the lower PCS. Through the precise layout of the baffles, the upper and lower air ducts 17 are completely staggered in space, preventing hot air from the bottom from flowing back to the top air intake, effectively solving the thermal interference problem under the compact layout.

[0037] In one possible implementation, the air duct assembly 57 includes a first air duct assembly 59 and a second air duct assembly 60. The first air duct assembly 59 is provided with an air duct 17 mounting hole 24 and two rows of holes on its side, namely an air duct first mounting hole 62 and an air duct second mounting hole 63. When the second air duct assembly 60 is installed using the air duct first mounting hole 62, it is in the air duct 17 usage state; when the second air duct assembly 60 is installed using the air duct second mounting hole 63, it is in the shipping and transportation state.

[0038] Specifically, the air duct assembly 57 adopts a switchable installation structure, including a first air duct assembly 59 and a second air duct assembly 60. The first air duct assembly 59 has two rows of mounting holes 24 on its side: the first mounting hole 62 is used to fix the second air duct assembly 60 when the equipment is put into operation, so that the air duct 17 unfolds to form a complete and efficient heat dissipation channel, ensuring the cooling performance of the PCS unit during operation; the second mounting hole 63 is used in the shipping and transportation state to fold the second air duct assembly 60 inward and fix it, effectively reducing the overall width to meet the transportation clearance requirements of a 20-foot standard container.

[0039] In one possible implementation, the first air duct assembly 59 is provided with an air duct mounting hole 65; the side of the first air duct assembly 59 is provided with two rows of holes, namely the first air duct mounting hole 62 and the second air duct mounting hole 63. When the second air duct assembly 60 is installed using the first air duct mounting hole 62, it is in the air duct usage state; when the second air duct assembly 60 is installed using the second air duct mounting hole 63, it is in the shipping and transportation state. The back of the first air duct assembly 59 is provided with an eighth air duct baffle 64, the bottom of the first air duct assembly 59 is provided with a drain outlet 67 and a baffle 66, and the top of the first air duct assembly 59 is provided with a protective cover 61.

[0040] Furthermore, the second air duct assembly 60 has a second air duct mounting hole 69 on its side, a handle 68 at its bottom, and a protective cover 61 at its top.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0042] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A wind-cooled string boost converter integrated machine, characterized in that, The cabinet includes a main frame (1), a PCS assembly area (2), a transformer area (3), a high-voltage area (4), and a low-voltage area (5). The main frame (1) is a 20-foot standard container. The PCS assembly area (2) includes 24 PCS units. The 24 PCS units are divided into two groups. Each group includes an upper PCS component (9) and a lower PCS component (10). The two groups are installed in a mirror relationship. The PCS assembly area (2) also includes a PCS mounting frame (7), a PCS component (6) and a busbar assembly component (8). The PCS mounting frame (7) includes a main beam frame (15), a PCS busbar area (18), a connecting channel (16) and an air duct (17). The main beam frame (15) is composed of horizontal beams and vertical beams. The horizontal beams include a first horizontal beam (19), a second horizontal beam (20), a third horizontal beam (21), a fourth horizontal beam (22), and a fifth horizontal beam (23). The first horizontal beam (19) is provided with mounting holes (24) for mounting and fixing on the bottom surface of the cabinet main frame (1). The second horizontal beam (20) is provided with a top beam frame mounting hole (26), a PCS first mounting hole (28), and a frame hoisting hole (27).

2. The air-cooled string boost converter integrated machine according to claim 1, characterized in that, The third crossbeam (21) is an upper PCS mounting support, with first folded edges (32) on both sides, first wire tying holes (30) on the first folded edges (32), first mounting holes (31) on the third crossbeam (21), and a limiting folding plate (29).

3. The air-cooled string boost converter integrated machine according to claim 1, characterized in that, The fourth crossbeam (22) and the fifth crossbeam (23) are the lower PCS mounting supports. The fourth crossbeam (22) has two second folded edges (33) downwards. The second folded edges (33) have second wire tying holes (34). The mounting surface has a second PCS mounting hole (35) and a limiting folding plate (29). The fifth crossbeam (23) has two folded edges. The folded edges have third wire tying holes (38) and a limiting folding plate (29).

4. The air-cooled string boost converter integrated machine according to claim 1, characterized in that, The PCS busbar area (18) is a closed cabinet with a busbar passage (40) on the right side. After the two sets of PCS are combined in the cabinet, they are connected to the transformer through the busbar on the right side. The PCS busbar area (18) has two double doors (41) at the front and back, and each door is equipped with a grid (42). The top (43) of the busbar area is a slope.

5. The air-cooled string boost converter integrated machine according to claim 4, characterized in that, The top of the PCS busbar (18) is provided with a first wire passage hole (44), the left side of the busbar is provided with a second wire passage hole (45), and the PCS busbar (18) is provided with a structural waterproof wire passage channel (46).

6. The air-cooled string boost converter integrated machine according to claim 1, characterized in that, The connecting channel (16) includes a channel support (47) and a channel cover (48). The connecting channel (16) is installed from the inside of the PCS busbar junction area (18) to the outside of the busbar crossing channel (40).

7. The air-cooled string boost converter integrated machine according to claim 1, characterized in that, The air duct (17) includes a first air duct (49) and a second air duct (50). The first air duct (49) includes a first air duct baffle (51), a second air duct baffle (52), a third air duct baffle (53), an eighth air duct baffle (64), a top of the confluence area (43), a sixth air duct baffle (56), and a seventh air duct baffle (58). The second air duct (50) includes a side wall of the PCS confluence area (18), a fourth air duct baffle (54), a fifth air duct baffle (55), a sixth air duct baffle (56), an air duct assembly (57), and a seventh air duct baffle (58).

8. The air-cooled string boost converter integrated machine according to claim 7, characterized in that, The air duct assembly (57) includes a first air duct assembly (59) and a second air duct assembly (50). The first air duct assembly (59) is provided with an air duct (17) mounting hole (24) and two rows of holes on the side, namely the first air duct mounting hole (62) and the second air duct mounting hole (63). When the second air duct assembly (50) is installed using the first air duct mounting hole (62), it is in the air duct (17) usage state; when the second air duct assembly (50) is installed using the second air duct mounting hole (63), it is in the shipping and transportation state.

Images