AC combiner cabinet and energy storage container

Abstract

The present application relates to the technical field of energy storage systems and proposes an AC junction box and energy storage container, comprising: a main circuit breaker having multiple input terminals and multiple output terminals, the multiple output terminals extending along a first direction to a wiring area at the bottom of the AC junction box; multiple sub-circuit breakers arranged in sequence in a horizontal direction to form a circuit breaker unit, and multiple circuit breaker units arranged in parallel and at intervals in a vertical direction; one end of each circuit breaker busbar is connected to an output terminal of a sub-circuit breaker, and the other end forms an output terminal in the wiring area at the bottom of the AC junction box; multiple circuit breaker busbars are arranged in intervals and connected one-to-one with multiple output terminals of multiple sub-circuit breakers; each main busbar is connected to a corresponding input terminal of the main circuit breaker and to a corresponding input terminal of each sub-circuit breaker. This can at least avoid the problem of wiring inconvenience caused by reducing the size of the AC junction box.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage systems, and in particular to an AC combiner cabinet and an energy storage container. Background Art

[0002] Energy storage containers are highly integrated energy storage system solutions, typically housed in standard containers. They integrate core components such as battery packs, a battery management system (BMS), an energy management system (EMS), a power storage converter system (PCS), a thermal management system, and firefighting equipment. The AC combiner cabinet is a core component of the PCS, enabling power conversion, distribution, and system integration.

[0003] In the existing technology, due to the increasing demand for miniaturization and energy storage capacity of energy storage containers, the space required for battery packs is getting larger and larger, and the size of energy storage conversion systems is getting smaller and smaller. In particular, there are more and more restrictions on width. How to reduce the size of the AC combiner cabinet has become a problem that needs to be solved in energy storage containers. Summary of the Invention

[0004] Based on this, it is necessary to address the problems in the above-mentioned background technology and provide an AC junction box and energy storage container, which can at least reduce the size of the AC junction box, and while reducing the size of the AC junction box, form a wiring area at the bottom of the AC junction box through copper busbar connection, so as to avoid the problem of wiring inconvenience caused by the reduction of the size of the AC junction box.

[0005] To solve the above technical problems and other problems, according to some embodiments, one aspect of the present application provides an AC combiner cabinet, comprising: a main circuit breaker having a plurality of input terminals and a plurality of output terminals, the plurality of output terminals extending along a first direction to a wiring area at a lower portion of the AC combiner cabinet;

[0006] There are multiple sub-circuit breakers, and the multiple sub-circuit breakers are arranged in sequence in the horizontal direction to form a circuit breaker unit. There are multiple circuit breaker units, and the multiple circuit breaker units are arranged in parallel and at intervals in the vertical direction;

[0007] There are multiple circuit breaker copper bars, one end of each circuit breaker copper bar is connected to an output terminal of a sub-circuit breaker, and the other end forms an output terminal in the wiring area at the bottom of the AC combiner cabinet. The multiple circuit breaker copper bars are arranged at intervals and are connected to the multiple output terminals of the multiple sub-circuit breakers in a one-to-one correspondence;

[0008] There are multiple main copper bars, each of which is connected to a corresponding input terminal of the main circuit breaker and a corresponding input terminal of each sub-circuit breaker.

[0009] In some embodiments, the circuit breaker copper bar includes: a first circuit breaker copper bar, a second circuit breaker copper bar, and a third circuit breaker copper bar;

[0010] One end of the first circuit breaker copper bar is connected to the sub-circuit breaker in the first target circuit breaker unit, and the other end of the first circuit breaker copper bar extends along the first direction to the wiring area at the bottom of the AC combiner cabinet to form an output terminal;

[0011] The first target circuit breaker unit is a circuit breaker unit in a wiring area close to the lower portion of the AC combiner cabinet, and the first direction is a vertical direction close to the bottom surface of the AC combiner cabinet.

[0012] In some embodiments, the second circuit breaker copper busbar has a connecting portion extending along a first direction, a first bending portion extending along a second direction, and a second bending portion extending along a third direction, and the second circuit breaker copper busbar is connected to a sub-circuit breaker in a second target circuit breaker unit;

[0013] The second target circuit breaker unit is a circuit breaker unit that is not blocked by the main circuit breaker in the extension direction of the copper busbar, the second direction is horizontal and close to the backplane of the AC combiner cabinet, and the third direction is horizontal and away from the backplane of the AC combiner cabinet.

[0014] In some embodiments, the third circuit breaker copper busbar includes a connection portion extending along a first direction, a first bending portion extending along a second direction, a second bending portion extending along a third direction, and a third bending portion extending along a fourth direction, and the third circuit breaker copper busbar is connected to a sub-circuit breaker in a third target circuit breaker unit;

[0015] The third target circuit breaker unit is a circuit breaker unit blocked by the main circuit breaker in the extension direction of the copper busbar, and the fourth direction is a horizontal direction close to the side plate of the AC combiner cabinet.

[0016] In some embodiments, the connection portion and the bending portion of the circuit breaker copper busbar are fixedly connected, and the first target circuit breaker, the second target circuit breaker and the third target circuit breaker respectively form multiple rows of output connection points arranged in parallel and at intervals in the wiring area at the bottom of the AC combiner cabinet.

[0017] In some embodiments, the invention further comprises an insulating sleeve, wherein the insulating sleeve is sleeved on a non-fixed connection position of the circuit breaker copper bar;

[0018] The first bending portion extending along the second direction includes a plurality of first sub-bending portions, each of which has a different vertical length and is arranged alternately in a cycle, so that both sides of the fixed connection are insulating sleeves;

[0019] The second bent portions extending along the third direction have different lengths in the vertical direction and are arranged alternately in a cycle, so that both sides of the fixed connection are provided with insulating sleeves;

[0020] The third bent portions extending along the fourth direction have different lengths in the horizontal direction, so as to form output connection points spaced apart in the horizontal direction in the wiring area at the bottom of the AC combiner cabinet.

[0021] In some embodiments, further comprising a plurality of insulating mounting brackets and a plurality of insulating posts;

[0022] The main circuit breaker and the sub-circuit breaker are fixed on the multiple insulating mounting frames, and the circuit breaker copper busbar is fixed on the insulating mounting frames and / or other circuit breaker copper busbars through the multiple insulating columns.

[0023] In some embodiments, the side wall of the AC combiner cabinet is formed with a wiring hole, and the external cables are connected to the copper busbar in the wiring area through the wiring hole;

[0024] The wiring hole is located at a position corresponding to the wiring area at the bottom of the AC combiner cabinet.

[0025] In some embodiments, a control cabinet circuit breaker is further included;

[0026] The control cabinet circuit breaker is arranged in a position close to the side wall of the first target circuit breaker unit, and the output end of the control cabinet circuit breaker extends to the wiring area at the bottom of the AC combiner cabinet through the first circuit breaker copper busbar.

[0027] In some embodiments, a cooling air duct is further included, wherein the cooling air duct includes:

[0028] An air inlet duct is located at the bottom of the AC combiner cabinet, and a plurality of openings corresponding to the positions of the circuit breakers are formed above the air inlet duct;

[0029] An air outlet duct is located at the top of the AC combiner cabinet, and a plurality of openings corresponding to the positions of the circuit breakers are formed below the air outlet duct;

[0030] A plurality of sub-cooling air ducts are formed between the plurality of openings of the air inlet air duct and the plurality of openings of the air outlet air duct, and each sub-cooling air duct is used to cool a plurality of sub-circuit breakers and circuit breaker copper bars on its path.

[0031] In some embodiments, the air inlet of the air inlet duct is connected to the air outlet of the air-cooling air conditioner, and the air outlet of the air outlet duct is connected to the air inlet of the air-cooling air conditioner.

[0032] In some embodiments, an air guide plate group is formed at each opening position of the air inlet duct, and each air guide plate group includes a plurality of air guide plates arranged at intervals.

[0033] In some embodiments, the closer the air guide plates in each air guide plate group are to the air inlet of the air inlet duct, the shorter the length is, and the closer the air guide plates at the same position in multiple air guide plate groups are to the air inlet of the air inlet duct, the shorter the length is, so that the amount of cold air discharged from each opening of the air outlet duct is the same.

[0034] Another aspect of the present application provides an energy storage container, comprising: a control cabinet; an air-cooled air conditioner; and an AC combiner cabinet as in any of the above embodiments.

[0035] In some embodiments, the air outlet of the air-cooled air conditioner is also connected to the air inlet of the control cabinet through a pipe, the air outlet duct also includes a control cabinet air outlet duct, the control cabinet air outlet duct includes a control cabinet air outlet, and the control cabinet air outlet is connected to the air inlet of the air-cooled air conditioner.

[0036] In the above-described embodiment, the AC combiner cabinet and energy storage container are connected to the circuit breaker via special-shaped copper busbars, and a cooling air duct is formed within the AC combiner cabinet. This can at least reduce the size of the AC combiner cabinet. Furthermore, while reducing the size of the AC combiner cabinet, the copper busbars are connected, and a wiring area is formed at the bottom of the AC combiner cabinet. This avoids the problem of wiring inconvenience caused by the reduced size of the AC combiner cabinet. It also avoids the problem of abnormal heat dissipation in the AC combiner cabinet due to the denser arrangement of the circuit breaker and copper busbars after the size of the AC combiner cabinet is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0038] Figure 1 Schematic diagram of an AC combiner cabinet provided in one embodiment of the present application Figure 1 ;

[0039] Figure 2 Schematic diagram of an AC combiner cabinet provided in one embodiment of the present application Figure 2 ;

[0040] Figure 3 Schematic diagram of an AC combiner cabinet provided in one embodiment of the present application Figure 3 ;

[0041] Figure 4 Schematic diagram of an AC combiner cabinet provided in one embodiment of the present application Figure 4 ;

[0042] Figure 5This is a schematic diagram of an air inlet duct provided in one embodiment of the present application.

[0043] Description of reference numerals:

[0044] 101. Main circuit breaker; 102. Sub-circuit breaker; 104. Main copper busbar; 105. First circuit breaker copper busbar; 106. Second circuit breaker copper busbar; 107. Third circuit breaker copper busbar; 108. Connecting portion extending along the first direction; 109. First bending portion extending along the second direction; 110. Second bending portion extending along the third direction; 111. Third bending portion extending along the fourth direction; 112. Connection area; 11 3. Control cabinet circuit breaker; 114. Circuit breaker unit; 201. Fixed connection; 202. Insulation column fixing; 203. Insulation mounting bracket; 204. Insulation column; 301. Air inlet duct; 302. Air outlet duct; 303. Sub-cooling duct; 401. Air outlet of air conditioner; 402. Air inlet of air conditioner; 304. Air guide plate group; 403. AC junction box; 404. Control cabinet; 405. Air-cooled air conditioner. DETAILED DESCRIPTION

[0045] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0047] In the case of using “including,” “having,” and “comprising” described herein, another component may be added unless a clear limiting term such as “only,” “consisting of,” etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as having one number.

[0048] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this application.

[0049] In this application, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to direct connection or indirect connection through an intermediate medium, internal communication between two elements, or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0050] Energy storage containers are highly integrated energy storage system solutions, typically housed in standard containers. They integrate core components such as battery packs, a battery management system (BMS), an energy management system (EMS), a power storage converter system (PCS), a thermal management system, and firefighting equipment. The AC combiner cabinet is a core component of the PCS, enabling power conversion, distribution, and system integration.

[0051] In the existing technology, due to the increasing demand for miniaturization and energy storage capacity of energy storage containers, the space required for battery packs is getting larger and larger, and the size of energy storage conversion systems is getting smaller and smaller. In particular, there are more and more restrictions on width. How to reduce the size of the AC combiner cabinet has become a problem that needs to be solved in energy storage containers.

[0052] This application proposes an AC combiner cabinet 403, please refer to Figure 1-2 The AC combiner cabinet 403 includes a main circuit breaker 101 , a sub-circuit breaker 102 , a circuit breaker copper busbar, and a main copper busbar 104 .

[0053] The main circuit breaker 101 has a plurality of input terminals and a plurality of output terminals. The plurality of output terminals extend along a first direction to a wiring area 112 at the bottom of the AC combiner cabinet 403 .

[0054] For example, please refer to Figure 1-Figure 2 , this application takes a three-phase circuit breaker as an example, where the main circuit breaker 101 and the sub-circuit breaker 102 both have three input terminals and three output terminals.

[0055] Here, there is no restriction on the number of input terminals and output terminals of the circuit breaker, and the type of circuit breaker can be selected according to actual needs.

[0056] There are multiple sub-circuit breakers 102, and the multiple sub-circuit breakers 102 are arranged in sequence in the horizontal direction to form a circuit breaker unit 114. There are multiple circuit breaker units 114, and the multiple circuit breaker units 114 are arranged in parallel and in intervals in the vertical direction.

[0057] Here, the number of sub-circuit breakers 102 in each circuit breaker unit 114 and the number of circuit breaker units 114 may be set according to the actual size of the AC combiner cabinet 403 .

[0058] In this way, the present application arranges the sub-circuit breakers 102 , which were originally arranged in a single row at intervals in the horizontal direction, into multiple rows, thus saving a large amount of horizontal space.

[0059] Among them, there are multiple circuit breaker copper bars, one end of each circuit breaker copper bar is connected to an output terminal of a sub-circuit breaker 102, and the other end forms an output terminal in the wiring area 112 at the bottom of the AC combiner cabinet 403. Multiple circuit breaker copper bars are arranged at intervals and are connected one-to-one with multiple output terminals of multiple sub-circuit breakers 102.

[0060] Here, multiple circuit breaker copper bars arranged at intervals are connected to multiple sub-circuit breakers, which ensures that insulation spacing is maintained between each circuit breaker copper bar and makes it easier for workers to identify the sub-circuit breakers corresponding to the copper bars during wiring.

[0061] For details, please refer to Figure 1 The circuit breaker copper bar includes: a first circuit breaker copper bar 105, a second circuit breaker copper bar 106 and a third circuit breaker copper bar 107.

[0062] One end of the first circuit breaker copper busbar 105 is connected to the sub-circuit breaker 102 in the first target circuit breaker unit, and the other end of the first circuit breaker copper busbar 105 extends along the first direction to the wiring area 112 at the bottom of the AC combiner cabinet 403 to form an output terminal.

[0063] The first target circuit breaker unit is the circuit breaker unit close to the wiring area 112 at the bottom of the AC combiner cabinet 403 , and the first direction is a vertical direction close to the bottom surface of the AC combiner cabinet 403 .

[0064] For details, please refer to Figure 1 The second circuit breaker copper bus 106 has a connecting portion 108 extending along the first direction, a first bending portion 109 extending along the second direction, and a second bending portion 110 extending along the third direction. The second circuit breaker copper bus 106 is connected to the sub-circuit breaker 102 in the second target circuit breaker unit 114.

[0065] Among them, the second target circuit breaker unit is the circuit breaker unit that is not blocked by the main circuit breaker 101 in the extension direction of the copper busbar, the second direction is horizontal and close to the backplane of the AC combiner cabinet 403, and the third direction is horizontal and away from the backplane of the AC combiner cabinet 403.

[0066] In this way, through the shape formed by the connecting portion 108 of the second circuit breaker copper busbar 106 extending along the first direction, the first bent portion 109 extending along the second direction, and the second bent portion 110 extending along the third direction, the second circuit breaker copper busbar 106 utilizes the thickness direction of the AC combiner cabinet 403 to make the copper busbar cross the sub-circuit breaker 102 below the second target circuit breaker unit 114, forming a wiring terminal in the wiring area 112, thereby avoiding the problem that after multiple rows of circuit breakers are formed, it is difficult for workers to connect the wiring terminals of the circuit breakers due to the dense arrangement of the circuit breakers.

[0067] For details, please refer to Figure 1 The third circuit breaker copper bus 107 includes a connecting portion 108 extending along the first direction, a first bending portion extending along the second direction, a second bending portion 110 extending along the third direction, and a third bending portion 111 extending along the fourth direction. The third circuit breaker copper bus 107 is connected to the sub-circuit breaker 102 in the third target circuit breaker unit 114.

[0068] The third target circuit breaker unit is a circuit breaker unit blocked by the main circuit breaker 101 in the extending direction of the copper busbar, and the fourth direction is a horizontal direction close to the side panel of the AC combiner cabinet 403 .

[0069] Here, due to the obstruction of the main circuit breaker 101, the third circuit breaker copper busbar 107 cannot extend directly downward to the wiring area 112. A third bending portion 111 extending along the fourth direction needs to be provided so that the third circuit breaker copper busbar 107 crosses the main circuit breaker 101 or the sub-circuit breaker 102 in the thickness direction and also needs to cross the main circuit breaker 101 in the width direction to form a wiring terminal in the wiring area 112.

[0070] Here, due to the dense arrangement of the main circuit breaker and the sub-circuit breakers, the main circuit breaker blocks the copper busbar path of some sub-circuit breakers extending downward through the copper busbar to the wiring area. Even if the blocked copper busbar is directly extended to the copper busbar of the main circuit breaker, it is still inconvenient to perform wiring. The present application uses the third bending portion to allow the copper busbar to bypass the main circuit breaker and extend to the wiring area, which facilitates the wiring of the main circuit breaker and the wiring of the sub-circuit breakers in the third target circuit breaker unit, thereby ensuring the applicability of the AC junction box 403.

[0071] Specifically, the connection part and the bending part of the circuit breaker copper busbar are fixedly connected, and the first target circuit breaker, the second target circuit breaker and the third target circuit breaker respectively form multiple rows of output connection points arranged in parallel and at intervals in the wiring area 112 at the bottom of the AC combiner cabinet 403.

[0072] In this way, the present application forms all output connection points at the lower part of the AC combiner cabinet 403. While reducing the width of the AC combiner cabinet 403 by setting multiple rows of circuit breakers, the setting of copper busbars will not increase the difficulty of wiring, thereby ensuring the applicability of the AC combiner cabinet 403.

[0073] Furthermore, the positions of the multiple rows of output connection points formed in the wiring area 112 at the bottom of the AC junction box 403 can correspond to the positions of the sub-circuit breakers 102. For example, the top circuit breaker unit 114 can be set so that its corresponding multiple output connection points can be formed at the position closest to the backplane, and the bottom circuit breaker unit 114 can be set so that its corresponding multiple output connection points can be formed at the position farthest from the backplane. In this way, the problem of staff having difficulty in matching multiple output connection points with circuit breakers is avoided.

[0074] As an example, when multiple rows of sub-circuit breakers are formed in the AC combiner cabinet 403, multiple rows of output connection points are also formed at the wiring terminals of the AC combiner cabinet. The number of rows of output connection points corresponds to the number of rows of sub-circuit breakers, and the arrangement of the output connection points in each row is the same as the arrangement of the sub-circuit breakers. For example, when there are three three-term sub-circuit breakers arranged in intervals in a row of sub-circuit breakers, among the output connection points in a row corresponding to the row of sub-circuit breakers, the first three output connection points correspond to the three output connection points of the first three-term sub-circuit breaker, the 4th to 6th output connection points correspond to the output connection points of the second three-term sub-circuit breaker, and the last three output connection points correspond to the three output connection points of the third three-term sub-circuit breaker.

[0075] In this way, when the staff is wiring, they only need to determine which connection point of the sub-circuit breaker is connected based on the location of the output connection point. There is no need to use the structure diagram of the AC combiner cabinet or find the path of the copper busbar to determine which connection point of which sub-circuit breaker the connection point corresponds to.

[0076] In one embodiment, the row of output connection points farthest from the backplane can be set to have the shortest length and be farthest from the bottom, while the row of output connection points closest to the backplane can be set to have the longest length and be closest to the bottom, which makes it easier for staff to perform wiring.

[0077] As an example, when multiple rows of sub-circuit breakers are formed in the AC junction box 403, multiple rows of output connection points are also formed at the wiring terminals of the AC junction box. The number of rows of output connection points corresponds to the number of rows of sub-circuit breakers. The arrangement of each row of output connection points is the same as the arrangement of the sub-circuit breakers, and multiple rows of connection points can be formed. For example, when three rows of sub-circuit breakers are formed in the AC junction box 403, the output connection points of the sub-circuit breakers in the bottom row are the shortest, forming a row of connection points farthest from the backplane, and the output connection points of the sub-circuit breakers in the top row are the longest and closest to the bottom, and the output connection points of the middle row of sub-circuit breakers form the middle row of connection points. In this way, for the three rows of sub-circuit breakers in the AC junction box 403, three staggered rows of output connection points are formed in the wiring area of ​​the AC junction box 403. In this way, no matter which connection point the staff connects, it will not be affected by other output connection points, which makes it more convenient for the staff to connect.

[0078] There are multiple main copper bars 104, each of which is connected to a corresponding input terminal of the main circuit breaker and a corresponding input terminal of each sub-circuit breaker.

[0079] Here, it should be noted that the number of the main copper bars 104 is related to the number of phases of the circuit breaker. For example, if a three-phase circuit breaker is used, the number of the main copper bars 104 is three.

[0080] Among them, see Figure 2 In this application, since the sub-circuit breakers 102 are arranged in two rows, the main copper bar 104 is C-shaped. When three rows are arranged, the main copper bar 104 is E-shaped. When more rows are arranged, it is only necessary to add more transverse main copper bar 104 sections in the vertical direction. The transverse dimension of the main copper bar 104 is related to the position of the sub-circuit breakers 102. Each main copper bar 104 needs to extend horizontally to cover the corresponding position of each sub-circuit breaker 102 to facilitate the connection between the sub-circuit breakers 102 and the main copper bar 104.

[0081] Here, to ensure the insulation effect between the multiple main copper bars 104, the multiple main copper bars 104 are spaced apart in the direction away from the backplane. This ensures the longitudinal spacing of the main copper bars 104 and the spacing of the main copper bars 104 in the thickness direction of the AC combiner cabinet. The thickness of the AC combiner cabinet is further utilized to achieve the effect of enhancing the insulation distance between the main copper bars.

[0082] Please continue reading Figure 2 An insulating sleeve (not shown in the figure) is also provided in the AC combiner cabinet 403 and is sleeved on a non-fixed connection position of the circuit breaker copper busbar.

[0083] See also Figure 1-Figure 2The first bending portion 109 extending along the second direction includes a plurality of first sub-bending portions, each of which has a different vertical length and is arranged alternately in a cycle, so that both sides of the fixed connection 201 are insulating sleeves.

[0084] Please continue to see Figure 2 The vertical lengths of the second bending portions 110 extending along the third direction are different and are arranged alternately in a cycle, so that both sides of the fixed connection 201 are insulating sleeves.

[0085] In this way, both sides of the fixed connection 201 are copper bars wrapped with insulating sleeves, which avoids the problem of insulation abnormality that may occur due to the small distance between the copper bars.

[0086] Please continue reading Figure 1-Figure 2 The third bent portions 111 extending along the fourth direction have different lengths in the horizontal direction, so as to form output connection points spaced apart in the horizontal direction in the wiring area 112 at the lower portion of the AC combiner cabinet 403 .

[0087] In this way, by providing third bent portions with different lengths, overlapping of output connection points is avoided.

[0088] Optionally, when selecting the length of the third bend, the length of the third bend can be determined according to the position of the sub-circuit breaker 102 so that the position of the connection point corresponds to the position of the sub-circuit breaker 102, making it easier for workers to perform wiring.

[0089] Please continue reading Figure 1-Figure 2 , further comprising a plurality of insulating mounting frames 203 and a plurality of insulating columns.

[0090] The main circuit breaker 101 and the sub-circuit breaker 102 are fixed on a plurality of insulating mounting frames 203 , and the circuit breaker copper busbar is fixed on the insulating mounting frames 203 and / or other circuit breaker copper busbars through a plurality of insulating columns.

[0091] Here, it should be noted that the insulating column fixing portion 201 and the insulating sleeve on the copper busbar can exist at the same time, so the position of the insulating column does not need to be staggered like the fixed connection portion 201 .

[0092] Please continue reading Figure 1-Figure 2 The side wall of the AC combiner cabinet 403 is formed with wiring holes, and external cables are connected to the copper busbars in the wiring area 112 through the wiring holes.

[0093] The wiring holes are located at positions corresponding to the wiring area 112 at the lower portion of the AC combiner cabinet 403 .

[0094] Please continue reading Figure 1-Figure 2 The AC combiner cabinet 403 further includes a control cabinet circuit breaker 113 .

[0095] The control cabinet circuit breaker 113 is disposed in the first target circuit breaker unit 114 near the side wall, and the output end of the control cabinet circuit breaker 113 extends to the wiring area 112 at the bottom of the AC combiner cabinet 403 through the first circuit breaker copper busbar 105 .

[0096] Here, in order to facilitate connection between the control cabinet and the control cabinet, the control cabinet circuit breaker 113 needs to be set in the bottom row closest to the control cabinet. Therefore, the copper busbar of the control cabinet circuit breaker 113 needs to extend the output end through the first circuit breaker copper busbar 105 to the wiring area 112 at the bottom of the AC junction box 403.

[0097] See also Figure 3-Figure 4 The AC combiner cabinet 403 also includes a cooling air duct.

[0098] The cooling air duct includes: an air inlet duct 301, located at the bottom of the AC junction box 403, and having multiple openings corresponding to the positions of the circuit breakers formed above the air inlet duct 301; an air outlet duct 302, located at the top of the AC junction box 403, and having multiple openings corresponding to the positions of the circuit breakers formed below the air outlet duct 302; multiple sub-cooling air ducts 303 are formed between the multiple openings of the air inlet duct 301 and the multiple openings of the air outlet duct 302, and each sub-cooling air duct 303 is used to cool the multiple sub-circuit breakers 102 and the circuit breaker copper busbars on its path.

[0099] The air inlet of the air inlet duct 301 is connected to the air outlet of the air-cooling air conditioner 405 , and the air outlet of the air outlet duct 302 is connected to the air inlet of the air-cooling air conditioner 405 .

[0100] In this way, the problem of abnormal heat dissipation of the AC combiner cabinet 403 due to the denser arrangement of circuit breakers and copper busbars after the size of the AC combiner cabinet 403 is reduced is avoided.

[0101] Please continue reading Figure 3 A wind guide plate group 304 is formed at each opening position of the air inlet duct 301, and each wind guide plate group 304 includes a plurality of wind guide plates arranged at intervals.

[0102] Among them, the closer the air guide plate in each air guide plate group 304 is to the air inlet of the air inlet duct 301, the shorter the length of the air guide plate is, and the closer the air guide plates at the same position in multiple air guide plate groups 304 are to the air inlet of the air inlet duct 301, the shorter the length of the air guide plates is, so that the amount of cold air discharged from each opening of the air outlet duct 302 is the same.

[0103] Here, due to the influence of wind pressure and wind speed, the present application provides a plurality of wind guide plates at the opening of the wind guide channel so that the amount of air blown out from each opening of the wind guide channel is the same.

[0104] See also Figure 3-Figure 5 For example, each group of air guide plates corresponds to a cooling opening, and each cooling opening has the same size. There are multiple air guide plates in each group of air guide plates. The closer the air guide plates are to the air inlet of the air guide channel, the shorter the length of the air guide plates is, and the farther they are from the bottom of the air guide channel; for a single air guide plate at the same position of multiple groups of air guide plates, the closer the air guide plates are to the air inlet of the air guide channel, the shorter the length of the air guide plates is, and the farther they are from the bottom of the air guide channel. The above-mentioned air guide plates have a higher wind speed and a lower wind pressure closer to the air inlet, and a lower wind speed and a higher wind pressure farther away from the air inlet. Therefore, the position farther away from the air inlet requires a longer air guide plate to obtain sufficient air volume. In this way, the same amount of air is intercepted by each air guide plate group 304, which ensures the cooling effect of the air guide channel on the AC junction cabinet 403, and the air volume of each cooling channel corresponding to each cooling opening is more uniform.

[0105] As an example, see Figure 5 Three air guide plates can form one air guide plate group 304. The air guide plate group 304 closest to the air inlet is group 1, and the air guide plate groups 304 farthest from the air inlet are group 9. Within each group, the air guide plate closest to the air inlet is the first air guide plate, and the air guide plate farthest from the air inlet is the third air guide plate. For example, within group 1, the length of the first air guide plate is less than the length of the second air guide plate, which is less than the length of the third air guide plate. For another example, comparing group 1 and group 2, the length of the first air guide plate in group 1 is less than the length of the first air guide plate in group 2; the length of the second air guide plate in group 1 is less than the length of the second air guide plate in group 2; and the length of the third air guide plate in group 1 is less than the length of the third air guide plate in group 2.

[0106] For further information, please refer to Figure 5 Each air guide plate includes a vertical portion and an inclined portion. The vertical portion can be a fixed length. The length of the vertical portion of the multiple air guide plates in group 2 should be 5%-8% longer than the length of the vertical portion of the multiple air guide plates in group 1. In this way, the air flow attenuation is compensated by the length of the vertical portion to achieve a preliminary balance of the total wind resistance of each air outlet. The inclination angle of the inclined portion can be different. Different inclination angles can compensate for the local pressure loss caused by the length difference and further reduce the air outlet flow deviation. Taking nine groups of air guide plates as an example, the inclination angles of the air guide plate groups 1-3 close to the air inlet can be 25°-40°, the inclination angles of the groups 7-9 away from the air inlet can be 15°-30°, and the inclination angles of the interrupted air guide plate groups 4-6 can be 20°-35°.

[0107] The inclination angle of the inclined portion is the angle a between the bottom end of the inclined portion and the vertical line.

[0108] See also Figure 4 In an exemplary embodiment, an energy storage container is provided, including: a control cabinet; an air-cooled air conditioner 405; and an AC combiner cabinet 403 according to any of the above embodiments.

[0109] Please continue reading Figure 4 Since the air-cooled air conditioner 405, the main control cabinet and the AC junction cabinet 403 need to be formed in the same space, the present application reduces the thickness of the control cabinet and integrates the air-cooled air conditioner 405 into the position corresponding to the control cabinet on the door, so that after the door is closed, the energy storage container forms a regular rectangular parallelepiped, and there is no need to set up the air conditioner outdoor unit in other positions.

[0110] Specifically, the air-conditioning outlet 401 of the air-cooled air conditioner 405 is also connected to the air inlet of the control cabinet through a pipe. The air outlet duct 302 also includes the control cabinet air outlet duct. The control cabinet air outlet duct includes the control cabinet air outlet. The control cabinet air outlet is connected to the air-conditioning inlet 402 of the air-cooled air conditioner 405.

[0111] See also Figure 3-Figure 4 The air outlet duct of the control cabinet and the air outlet duct 302 of the AC combiner cabinet 403 can be integrated together and both are connected to the air inlet 402 of the air conditioner.

[0112] In the above-described embodiment, the AC combiner cabinet 403 and the energy storage container are connected to the circuit breaker via special-shaped copper busbars, and a cooling air duct is formed within the AC combiner cabinet 403. This can at least reduce the size of the AC combiner cabinet 403. Furthermore, while reducing the size of the AC combiner cabinet 403, the copper busbars are used for connection, and a wiring area 112 is formed at the bottom of the AC combiner cabinet 403. This avoids wiring difficulties caused by the reduced size of the AC combiner cabinet 403, and also avoids abnormal heat dissipation from the AC combiner cabinet 403 due to the denser arrangement of the circuit breaker and copper busbars after the size of the AC combiner cabinet 403 is reduced.

[0113] Please note that the above embodiments are for illustrative purposes only and are not intended to limit the present application.

[0114] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0115] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An AC combiner cabinet, characterized in that: include: A main circuit breaker having a plurality of input terminals and a plurality of output terminals, wherein the plurality of output terminals extend along a first direction to a wiring area at a lower portion of the AC combiner cabinet; There are multiple sub-circuit breakers, and the multiple sub-circuit breakers are arranged in sequence in the horizontal direction to form a circuit breaker unit. There are multiple circuit breaker units, and the multiple circuit breaker units are arranged in parallel and at intervals in the vertical direction; There are multiple circuit breaker copper bars, one end of each circuit breaker copper bar is connected to an output terminal of a sub-circuit breaker, and the other end forms an output terminal in the wiring area at the bottom of the AC combiner cabinet. The multiple circuit breaker copper bars are arranged at intervals and are connected to the multiple output terminals of the multiple sub-circuit breakers in a one-to-one correspondence; There are multiple main copper bars, each of which is connected to a corresponding input terminal of the main circuit breaker and a corresponding input terminal of each sub-circuit breaker; The AC combiner cabinet further includes a cooling air duct, which includes: An air inlet duct is located at the bottom of the AC combiner cabinet, and a plurality of openings corresponding to the positions of the circuit breakers are formed above the air inlet duct; An air outlet duct is located at the top of the AC combiner cabinet, and a plurality of openings corresponding to the positions of the circuit breakers are formed below the air outlet duct; A plurality of sub-cooling air ducts are formed between the plurality of openings of the air inlet duct and the plurality of openings of the air outlet duct, and each sub-cooling air duct is used to cool a plurality of sub-circuit breakers and circuit breaker copper bars on its path; Wherein, an air guide plate group is formed at each opening position of the air inlet duct, and each air guide plate group includes a plurality of air guide plates arranged at intervals; Among them, the closer the air guide plates in each air guide plate group are to the air inlet of the air inlet duct, the shorter the length is, and the closer the air guide plates at the same position in multiple air guide plate groups are to the air inlet of the air inlet duct, the shorter the length is, so that the amount of cold air discharged from each opening of the air outlet duct is the same.

2. The AC combiner cabinet according to claim 1, characterized in that: The circuit breaker copper bar comprises: a first circuit breaker copper bar, a second circuit breaker copper bar and a third circuit breaker copper bar; One end of the first circuit breaker copper bar is connected to the sub-circuit breaker in the first target circuit breaker unit, and the other end of the first circuit breaker copper bar extends along the first direction to the wiring area at the bottom of the AC combiner cabinet to form an output terminal; The first target circuit breaker unit is a circuit breaker unit in a wiring area close to the lower portion of the AC combiner cabinet, and the first direction is a vertical direction close to the bottom surface of the AC combiner cabinet.

3. The AC combiner cabinet according to claim 2, characterized in that: The second circuit breaker copper busbar has a connecting portion extending along a first direction, a first bending portion extending along a second direction, and a second bending portion extending along a third direction, and the second circuit breaker copper busbar is connected to a sub-circuit breaker in a second target circuit breaker unit; The second target circuit breaker unit is a circuit breaker unit that is not blocked by the main circuit breaker in the extension direction of the copper busbar, the second direction is horizontal and close to the backplane of the AC combiner cabinet, and the third direction is horizontal and away from the backplane of the AC combiner cabinet.

4. The AC combiner cabinet according to claim 3, characterized in that: The third circuit breaker copper bar comprises a connecting portion extending in a first direction, a first bending portion extending in a second direction, a second bending portion extending in a third direction, and a third bending portion extending in a fourth direction, wherein the third circuit breaker copper bar is connected to a sub-circuit breaker in a third target circuit breaker unit; The third target circuit breaker unit is a circuit breaker unit blocked by the main circuit breaker in the extension direction of the copper busbar, and the fourth direction is a horizontal direction close to the side panel of the AC combiner cabinet.

5. The AC combiner cabinet according to claim 4, characterized in that: The connection portion and the bent portion of the circuit breaker copper bus are fixedly connected, and the first target circuit breaker, the second target circuit breaker and the third target circuit breaker respectively form multiple rows of output connection points arranged in parallel and at intervals in the wiring area at the bottom of the AC combiner cabinet.

6. The AC combiner cabinet according to claim 4, characterized in that: It also includes an insulating sleeve, which is sleeved on a non-fixed connection position of the circuit breaker copper bar; The first bending portion extending along the second direction includes a plurality of first sub-bending portions, each of which has a different vertical length and is arranged alternately in a cycle, so that both sides of the fixed connection are insulating sleeves; The second bent portions extending along the third direction have different lengths in the vertical direction and are arranged alternately in a cycle, so that both sides of the fixed connection are provided with insulating sleeves; The third bent portions extending along the fourth direction have different lengths in the horizontal direction, so as to form output connection points spaced apart in the horizontal direction in the wiring area at the bottom of the AC combiner cabinet.

7. The AC combiner cabinet according to claim 1, characterized in that: Also included are a plurality of insulating mounting brackets and a plurality of insulating posts; The main circuit breaker and the sub-circuit breaker are fixed on the multiple insulating mounting frames, and the circuit breaker copper busbar is fixed on the insulating mounting frames and / or other circuit breaker copper busbars through the multiple insulating columns.

8. The AC combiner cabinet according to claim 1, characterized in that: The side wall of the AC combiner cabinet is formed with a wiring hole, and the external cables are connected to the copper busbar in the wiring area through the wiring hole; The wiring hole is located at a position corresponding to the wiring area at the bottom of the AC combiner cabinet.

9. The AC combiner cabinet according to claim 2, characterized in that: Also includes control cabinet circuit breakers; The control cabinet circuit breaker is arranged in a position close to the side wall of the first target circuit breaker unit, and the output end of the control cabinet circuit breaker extends to the wiring area at the bottom of the AC combiner cabinet through the first circuit breaker copper busbar.

10. The AC combiner cabinet according to claim 1, characterized in that: The air inlet of the air inlet duct is connected to the air outlet of the air-cooling air conditioner, and the air outlet of the air outlet duct is connected to the air inlet of the air-cooling air conditioner.

11. An energy storage container, characterized in that: include: Control cabinet; Air-cooled air conditioner; The AC combiner cabinet according to any one of claims 1 to 10.

12. The energy storage container according to claim 11, characterized in that: The air outlet of the air-cooled air conditioner is also connected to the air inlet of the control cabinet through a pipe. The air outlet duct also includes a control cabinet air outlet duct. The control cabinet air outlet duct includes a control cabinet air outlet. The control cabinet air outlet is connected to the air inlet of the air-cooled air conditioner.

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