Power device

Abstract

This invention provides a power device. The power device includes a mounting cabinet and multiple power modules. The mounting cabinet includes a top. The multiple power modules include a first group of power modules and a second group of power modules. The first group of power modules is electrically connected to the mounting cabinet, arranged adjacently, and detachably mounted on the top of the mounting cabinet to form a first array. The second group of power modules is electrically connected to the mounting cabinet, arranged adjacently, and detachably mounted on the top of the mounting cabinet to form a second array. The power modules in the first array and the power modules in the second array are arranged back-to-back.

Description

Power equipment The present invention relates to power equipment, and more particularly, to a power equipment that is convenient for transportation. With the continuous development of energy demand, the demand for power equipment has also been continuously increasing. Existing power equipment is all integrated, that is, it is pre-assembled into a main body in the factory and then the main body is directly transported to the installation site. However, general standard containers have fixed dimensions, and the external dimensions of existing power equipment occupy a relatively large floor area. A standard container can only accommodate one main body for transportation, resulting in reduced transportation efficiency and wasted transportation resources. In addition, in order to increase the output power, the existing method is to use two or more power equipment in parallel. However, this method requires the external terminals of the power equipment to be connected in parallel and converged to the transformer, and each power equipment needs to be individually packaged and transported, resulting in higher costs. During installation, enough space needs to be reserved between two or more power equipment, occupying a large floor area. During maintenance, each power equipment needs to be individually maintained, increasing the maintenance cost. On the other hand, the module configuration inside the existing power equipment is relatively compact, resulting in insufficient heat dissipation space between the modules and reduced heat dissipation efficiency. The modules of the existing power equipment are of a modular structure, and are limited by the volume and installation method of the main body, and the layout cannot be adjusted according to requirements. In view of this, it is necessary to develop a power equipment to solve the problems faced by the existing technology. The purpose of the present invention is to provide a power equipment to achieve the effects of improving transportation efficiency, saving transportation resources, and improving heat dissipation efficiency. To achieve the above object, the present case provides a power equipment, including an installation cabinet and a plurality of power modules. The installation cabinet includes a top. The plurality of power modules include a first group of power modules and a second group of power modules. The first group of power modules is electrically connected to the installation cabinet, arranged adjacent to each other and detachably installed on the top of the installation cabinet to form a first array. The second group of power modules is electrically connected to the installation cabinet, arranged adjacent to each other and detachably installed on the top of the installation cabinet to form a second array. The power modules in the first array and the power modules in the second array are arranged back to back. In one embodiment, the assembled installation cabinet and the plurality of power modules are transported as a main body. In one embodiment, each power module is disposed on the top of the installation cabinet through a mounting bracket. In one embodiment, the power modules in the first array and the corresponding power modules in the second array are arranged back to back, and the two back-to-back power modules are disposed on the top of the installation cabinet through the same mounting bracket. In one embodiment, the power modules in the first array are arranged on the front side of the top of the installation cabinet, and the power modules in the second array are arranged on the rear side of the top of the installation cabinet. The installation cabinet includes multiple sets of interfaces, and the multiple sets of interfaces include a first row of interfaces and a second row of interfaces. Among them, the first row of interfaces is arranged on the front of the installation cabinet, and each set of interfaces in the first row of interfaces corresponds to the setting of a power module in the first array. The second row of interfaces is arranged on the back of the installation cabinet, and each set of interfaces in the second row of interfaces corresponds to the setting of a power module in the second array. In one embodiment, each set of interfaces includes a first interface, a second interface, and a third interface. The installation cabinet includes a first compartment and a second compartment. The first compartment is arranged on the front side of the installation cabinet and corresponds to the first array. The second compartment is arranged on the rear side of the installation cabinet and corresponds to the second array. The first compartment includes a first DC compartment, a first AC compartment, and a first wiring compartment. The first DC compartment is adjacent to the first AC compartment, and the first wiring compartment is connected and arranged on the top of the first DC compartment and the first AC compartment. The second compartment includes a second DC compartment, a second AC compartment, and a second wiring compartment. The second DC compartment is adjacent to the second AC compartment, and the second wiring compartment is connected and arranged on the top of the second DC compartment and the second AC compartment. The first compartment and the second compartment are arranged to be interconnected or separated. In one embodiment, multiple sets of DC busbars and multiple sets of DC cables are respectively arranged in the first DC compartment and the second DC compartment. The first end of each set of DC cables is electrically connected to a set of DC busbars, enters the first wiring compartment or the second wiring compartment from bottom to top, and the second end of each set of DC cables is reserved in the first wiring compartment or the second wiring compartment. After the power module is installed, the second end of each set of DC cables respectively passes through the first interface in a set of interfaces and is electrically connected to the DC terminal of the power module. In one embodiment, multiple sets of AC terminals and multiple sets of AC cables are respectively arranged in the first AC compartment and the second AC compartment. The first end of each set of AC cables is electrically connected to a set of AC terminals, enters the first wiring compartment or the second wiring compartment from bottom to top, and the second end of each set of AC cables is reserved in the first wiring compartment or the second wiring compartment. After the power module is installed, the second end of each set of AC cables passes through the second interface of a set of interfaces and is electrically connected to the AC terminal of the power module. In one embodiment, control boxes and multiple sets of control cables are respectively arranged in the first AC compartment and the second AC compartment. The first end of each set of control cables is electrically connected to the control box, enters the first wiring compartment or the second wiring compartment from bottom to top, and the second end of each set of control cables is reserved in the first wiring compartment or the second wiring compartment. After the power module is installed, the second end of each set of control cables passes through the third interface of a set of interfaces and is electrically connected to the control board of the power module. In one embodiment, the number of power modules in the first array is equal to the number of power modules in the second array. In one embodiment, the installation cabinet includes a bottom structure and a transportation plate. The transportation plate is connected to the bottom structure for transportation. When the power device is transported to the site, the transportation plate is removed, and the bottom structure is fixed to the base installed at the site. In one embodiment, the power device includes a plurality of first air ducts and second air ducts. The plurality of first air ducts are located on the top side of the plurality of power modules, and the second air ducts are located on the bottom side of the plurality of power modules. Cold air enters the plurality of power modules through the second air ducts, and hot air is discharged from the plurality of power modules through the plurality of first air ducts. In one embodiment, the plurality of first air ducts include a front air duct, a middle air duct, and a rear air duct. The front air duct is disposed corresponding to the front side of the first array, the middle air duct is located between the first array and the second array, and the rear air duct is disposed corresponding to the rear side of the second array. In one embodiment, the mounting bracket has a height such that at least part of the second air duct is formed between the installation cabinet and the plurality of power modules. In one embodiment, at least part of the second air duct is located between the first array and the second array. The mounting bracket includes a partition. The partition is separated between the middle air duct and the second air duct. In one embodiment, by adjusting the height of the mounting bracket, the volume of the second air duct is adjusted. In one embodiment, by adjusting the position of the partition, the volume of the second air duct is adjusted. The beneficial effect of the present invention is that the present invention provides a power device. By detachably installing the power modules in a double-row array on the top of the installation cabinet, the effect of increasing the total output power is achieved. The main body is formed by the plurality of power modules and the installation cabinet for transportation, improving the transportation efficiency of the power device and saving transportation resources. Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different ways, all of which do not depart from the scope of the present invention, and the descriptions and drawings therein are essentially for illustrative purposes and not for limiting the present invention. For example, if the following content of this disclosure describes a first feature being disposed on or above a second feature, it means that it includes embodiments where the above-mentioned first feature and the above-mentioned second feature are in direct contact, and also includes embodiments where additional features can be disposed between the above-mentioned first feature and the above-mentioned second feature, such that the above-mentioned first feature and the above-mentioned second feature may not be in direct contact. Additionally, the same reference symbols and / or labels may be used in different embodiments of this disclosure. These repetitions are for the purpose of simplification and clarity and are not used to define the relationship between each embodiment and / or the described external structure. Furthermore, for the convenience of describing the relationship between a component or feature part in the drawings and another (plural) component or (plural) feature part, spatial relative terms such as "upper", "lower", "left", "right" and similar terms may be used. Except for the orientations shown in the drawings, the spatial relative terms are used to cover different orientations of the device during use or operation. The device may also be positioned otherwise (for example, rotated 90 degrees or in other orientations), and the descriptions of the spatial relative terms used are interpreted accordingly. In addition, when a component is referred to as being "connected to" or "coupled to" another component, it may be directly connected to or coupled to the other component, or there may be intervening components. Although the numerical ranges and parameters in the broad scope of this disclosure are approximate values, the numerical values are stated as precisely as possible in specific examples. Additionally, it can be understood that although terms such as "first", "second", "third", etc. may be used in the claims to describe different components, these components should not be limited by these terms. In embodiments, these components described correspondingly are represented by different component symbols. These terms are used to distinguish different components. For example: The first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component without departing from the scope of the embodiment. The term "and / or" used in this way includes any or all combinations of one or more of the related listed items. Except in the operating / work examples, or unless explicitly specified, all numerical ranges, amounts, values, and percentages (such as those percentages of angles, time durations, temperatures, operating conditions, quantity ratios, and the like) disclosed herein should be understood to be modified by the term "about" or "substantially" in all embodiments. Accordingly, unless indicated to the contrary, the numerical parameters stated in this disclosure and the appended claims are approximate values that can vary as needed. For example, each numerical parameter should be interpreted at least according to the number of significant digits stated and by applying ordinary rounding principles. Ranges may be expressed in this document as from one endpoint to the other endpoint or between two endpoints. All ranges disclosed herein include the endpoints unless otherwise specified. FIG. 1 schematically shows a perspective view of a power device according to a first embodiment of the present invention, and FIG. 2 is an exploded view of the power device shown in FIG. 1, in which the cables of the installation cabinet are hidden. As shown in FIGS. 1 and 2, the power device 100 includes an installation cabinet 1 and a plurality of power modules 2. The installation cabinet 1 includes a top 1a. The plurality of power modules 2 includes a first group of power modules 2a and a second group of power modules 2b. The first group of power modules 2a is electrically connected to the installation cabinet 1, arranged adjacent to each other and detachably installed on the top 1a of the installation cabinet 1 to form a first array X. The second group of power modules 2b is electrically connected to the installation cabinet 1, arranged adjacent to each other and detachably installed on the top 1a of the installation cabinet 1 to form a second array Y. The power modules 2 in the first array X and the power modules 2 in the second array Y are arranged back to back. Through the configuration of multiple groups of power modules 2 such as the first group of power modules 2a and the second group of power modules 2b, the effect of increasing the total output power is achieved. In this embodiment, the assembled installation cabinet 1 and the plurality of power modules 2 are transported as a main body, and the size of the main body is, for example but not limited to, a hexahedron structure with a length of 2910 mm, a width of 1974 mm, and a height of 2350 mm. Two main bodies can be accommodated in a general standard container and transported to the assembly site, thereby improving the transportation efficiency of the power device 100 and saving transportation resources. FIG. 3 is a perspective view of the mounting bracket of the power device shown in FIG. 1. As shown in FIGS. 1 to 3, the power device 100 further includes a plurality of mounting brackets 3. Each power module 2 is disposed on the top 1a of the installation cabinet 1 through a mounting bracket 3. In this embodiment, one power module 2 in the first array X and the corresponding one power module 2 in the second array Y are arranged back to back, and the two back-to-back arranged power modules 2 are disposed on the top 1a of the installation cabinet 1 through the same mounting bracket 3. In this embodiment, the number of power modules 2 in the first array X is 8, and the number of power modules 2 in the second array Y is also 8. In one embodiment, the number of power modules 2 in the first array X is equal to the number of power modules 2 in the second array Y, but this is not a limitation. In this embodiment, the power of each power module 2 is, for example but not limited to, 1.6 megawatts (MW). Through the back-to-back arrangement of 8 power modules 2 in the first array X and 8 power modules 2 in the second array Y, compared with 2 independent power devices (not shown) with a single row of 8 power modules, the volume is reduced by at least one-third and the floor area is smaller. FIG. 4 is a top view of the power device shown in FIG. 1 connected to a transformer. As shown in FIG. 4, in this embodiment, the power modules 2 in the first array X and the second array Y of the power device 100 can be directly connected to the transformer B through the connection busbar A without parallel busbar connection, and its installation method is simple, convenient and fast. In one embodiment, the power modules 2 can be transported separately in packages, saving transportation costs. As shown in FIGS. 1 to 3, in this embodiment, a plurality of mounting brackets 3 are arranged in an array and detachably disposed on the top 1a of the mounting cabinet 1. Each mounting bracket 3 includes a first guide rail 31, a second guide rail 32, and a connecting section 33. The first guide rail 31 includes a first end 31a, a second end 31b, a card slot 311, and at least one fixing hole 312. The second guide rail 32 includes a first end 32a, a second end 32b, a card slot 321, and at least one fixing hole 322. The connecting section 33 is connected between the second end 31b of the first guide rail 31 and the second end 32b of the second guide rail 32. The first end 31a of the first guide rail 31 and the first end 32a of the second guide rail 32 are respectively disposed in a direction away from the connecting section 33. The card slot 311 of the first guide rail 31 is disposed at the second end 31b, and at least one fixing hole 312 of the first guide rail 31 is disposed at the first end 31a. The power module 2 slides from the first end 31a of the first guide rail 31 toward the second end 31b, and is snapped into the card slot 311, and then the power module 2 is fixed to at least one fixing hole 312 by a bolt (not shown). The card slot 321 of the second guide rail 32 is disposed at the second end 32b, and at least one fixing hole 322 of the second guide rail 32 is disposed at the first end 32a. The power module 2 slides from the first end 32a of the second guide rail 32 toward the second end 32b, and is snapped into the card slot 321, and then the power module 2 is fixed to at least one fixing hole 322 by a bolt (not shown). Through the arrangement of the first guide rail 31 and the second guide rail 32 of the mounting bracket 3, the power module 2 is quickly fixed to the top 1a of the mounting cabinet 1. As shown in FIGS. 1 to 2, in this embodiment, the power modules 2 in the first array X are disposed on the front side of the top 1a of the mounting cabinet 1. The power modules 2 in the second array Y are disposed on the rear side of the top 1a of the mounting cabinet 1. In this embodiment, the mounting cabinet 1 includes a first side surface 1b, a second side surface 1c, a front surface 1d, and a rear surface 1e. The first side surface 1b and the second side surface 1c are respectively located on two opposite sides of the mounting cabinet 1. The front surface 1d and the rear surface 1e are respectively located on two opposite sides of the mounting cabinet 1, and are respectively connected between the first side surface 1b and the second side surface 1c. In this embodiment, the installation cabinet 1 includes multiple groups of interfaces 11 and multiple groups of cables 12. The multiple groups of interfaces 11 include a first row of interfaces and a second row of interfaces. The first row of interfaces is disposed on the front surface 1d of the installation cabinet 1, and each group of interfaces 11 in the first row of interfaces is disposed corresponding to a power module 2 in the first array X. The second row of interfaces is disposed on the back surface 1e of the installation cabinet 1, and each group of interfaces 11 in the second row of interfaces is disposed corresponding to a power module 2 in the second array Y. The multiple groups of cables 12 are reserved in the installation cabinet 1. After the power module 2 is installed on the top 1a of the installation cabinet 1, some of the cables 12 are respectively electrically connected to the multiple power modules 2 in the first array X through the interfaces 11 of the first row of interfaces, and the remaining cables 12 are respectively electrically connected to the multiple power modules 2 in the second array Y through the interfaces 11 of the second row of interfaces. By respectively disposing the multiple groups of interfaces 11 corresponding to the multiple power modules 2, the wiring path of the cables 12 is shortened and it is easy to assemble. As shown in FIGS. 1 to 2, in this embodiment, each group of interfaces 11 includes a first interface 111, a second interface 112, and a third interface 113, and each group of cables 12 includes a DC cable 121, an AC cable 122, and a control cable 123. In an embodiment, the first interface 111, the second interface 112, and the third interface 113 are, for example but not limited to, cable glands. In an embodiment, the group of interfaces 11 includes multiple cable glands (not shown). Before the power module 2 is installed in the installation cabinet 1, the multiple cable glands are respectively pre-blocked on the first interface 111, the second interface 112, and the third interface 113, thereby achieving the effects of waterproofing and dustproofing. During the assembly process of the power module 2, the cable glands are removed from the first interface 111, the second interface 112, and the third interface 113, so that the DC cable 121, the AC cable 122, and the control cable 123 respectively pass through the first interface 111, the second interface 112, and the third interface 113 and are electrically connected to the power module 2. FIG. 5 is a perspective view of the installation cabinet of the power device shown in FIG. 1. FIG. 6 is a perspective view of the installation cabinet of the power device shown in FIG. 5, where the top, front side plate member, left side plate member, and cable of the installation cabinet are hidden. As shown in FIGS. 1 to 6, in this embodiment, the installation cabinet 1 includes a first compartment 13 and a second compartment 14. The first compartment 13 is disposed on the front side of the installation cabinet 1 and corresponds to the first array X. The second compartment 14 is disposed on the rear side of the installation cabinet 1 and corresponds to the second array Y. The first compartment 13 includes a first DC compartment 13a, a first AC compartment 13b, and a first wiring compartment 13c. The first DC compartment 13a is adjacent to the first AC compartment 13b, and the first wiring compartment 13c is connected through a plurality of holes 130 and disposed on the top of the first DC compartment 13a and the first AC compartment 13b. The second compartment 14 includes a second DC compartment 14a, a second AC compartment 14b, and a second wiring compartment 14c. The second DC compartment 14a is adjacent to the second AC compartment 14b, and the second wiring compartment 14c is connected through a plurality of holes 140 and disposed on the top of the second DC compartment 14a and the second AC compartment 14b. In this embodiment, the first compartment 13 and the second compartment 14 are separately arranged, but not limited thereto. In one embodiment, the first compartment 13 and the second compartment 14 of the installation cabinet 1 are not separated and are connected to each other, but not limited thereto. In one embodiment, for example, a hollow partition is provided between the first compartment 13 and the second compartment 14. In one embodiment, the first compartment 13 and the second compartment 14 of the installation cabinet 1 are partially connected. For example, the first DC compartment 13a of the first compartment 13 can be connected to the second DC compartment 14a of the second compartment 14, the first AC compartment 13b of the first compartment 13 can be connected to the second AC compartment 14b of the second compartment 14, or the first wiring compartment 13c of the first compartment 13 can be connected to the second wiring compartment 14c of the second compartment 14, but not limited thereto. The connection mode of the first compartment 13 and the second compartment 14 can vary according to actual needs. FIG. 7 is a perspective view of the DC busbar of the power device shown in FIG. 6. As shown in FIGS. 1 to 7, in this embodiment, multiple sets of DC busbars 151 and multiple sets of DC cables 121 are respectively arranged in the first DC compartment 13a and the second DC compartment 14a. For example, 8 sets of DC busbars 151 are respectively arranged in the first DC compartment 13a and the second DC compartment 14a, but not limited thereto. Each set of DC busbars 151 includes a set of DC terminals 151a. The multiple sets of DC busbars 151 are arranged adjacent to each other and form a DC busbar array 151b. The first end (not shown) of a set of DC cables 121 is electrically connected to the DC terminal 151a of a set of DC busbars 151, enters the first wiring compartment 13c or the second wiring compartment 14c from bottom to top through the hole 130 or the hole 140, and the second end 121b of this set of DC cables 121 is reserved in the first wiring compartment 13c or the second wiring compartment 14c. After the power module 2 is installed on the top 1a of the installation cabinet 1, the second end 121b of this set of DC cables 121 passes through the first interface 111 in this set of interfaces 11 and is electrically connected to the DC end (not shown) of the power module 2, that is, as shown in FIG. 1, thereby realizing the transmission of direct current. As shown in FIGS. 1 to 7, in this embodiment, one side of the DC busbar array 151b faces the first side 1b, and the other side of the DC busbar array 151b faces the second side 1c. Each set of DC terminals 151a is arranged adjacent to a set of interfaces 11 located on the front 1d or the back 1e, so as to shorten the wiring path of the DC cables 121. FIG. 8 is a perspective view of the AC busbar of the power device shown in FIG. 6. As shown in FIGS. 1 to 6 and FIG. 8, in this embodiment, 3 AC busbars 152 and multiple sets of AC cables 122 are respectively arranged in the first AC compartment 13b and the second AC compartment 14b, where the 3 AC busbars 152 respectively correspond to three-phase alternating current. Multiple AC terminals are arranged on each AC busbar 152 to form multiple sets of AC terminals 152a. For example, 8 sets of AC terminals 152a are respectively arranged in the first AC compartment 13b and the second AC compartment 14b. The multiple sets of AC terminals 152a are arranged adjacent to each other and form an AC terminal array 152b. The first end (not shown) of the multiple sets of AC cables 122 is electrically connected to the AC terminals 152a, enters the first wiring compartment 13c or the second wiring compartment 14c from bottom to top through the hole 130 or the hole 140, and the second end 122b of this set of AC cables 122 is reserved in the first wiring compartment 13c or the second wiring compartment 14c. After the power module 2 is installed on the top 1a of the installation cabinet 1, the second end 122b of this set of AC cables 122 passes through the second interface 112 of a set of interfaces 11 and is electrically connected to the AC end (not shown) of the power module 2, that is, as shown in FIG. 1, thereby realizing the transmission of alternating current. As shown in FIGS. 1 to 6 and FIG. 8, one side of the AC terminal array 152b faces the first side surface 1b, and the other side of the AC terminal array 152b faces the second side surface 1c. Each group of AC terminals 152a is disposed adjacent to a group of interfaces 11 located on the front surface 1d or the back surface 1e, shortening the wiring path of the AC cable 122. In this embodiment, a control box 153 and a group of control cables 123 are respectively disposed in the first AC compartment 13b and the second AC compartment 14b. The first end (not shown) of the group of control cables 123 is electrically connected to the control box 153, enters the first wiring compartment 13c or the second wiring compartment 14c from bottom to top through the hole 130 or the hole 140, and the second end 123b of the group of control cables 123 is reserved in the first wiring compartment 13c or the second wiring compartment 14c. After the power module 2 is installed on the top 1a of the installation cabinet 1, the second end 123b of the group of control cables 123 passes through the third interface 113 of the group of interfaces 11 and is electrically connected to the control board (not shown) of the power module 2, that is, as shown in FIG. 1, thereby realizing signal transmission. In one embodiment, the installation cabinet 1 further includes at least one protection compartment (not shown). At least one protection compartment is disposed between the first AC compartment 13b and the second side surface 1c, or between the second AC compartment 14b and the second side surface 1c. At least one protection compartment includes multiple groups of circuit breakers (not shown). The multiple groups of circuit breakers in at least one protection compartment are connected to the AC bus bar 152 in the first AC compartment 13b or the second AC compartment 14b, for protecting the circuit and avoiding overload and short circuit and other situations. In one embodiment, the multiple power modules 2 are modular modules and include standard modules (not shown), which is beneficial to rapid manufacturing and production. In one embodiment, the multiple power modules 2 further include functional modules (not shown), wherein the functional modules have additional functions, and their function configurations can be customized by customers or adjusted according to requirements to achieve diversified functions. In one embodiment, the installation cabinet 1 includes a bottom structure 16 and a transportation plate member (not shown). The transportation plate member is connected to the bottom structure 16 for transportation, thereby fixing the installation cabinet 1 and preventing collision during transportation. In one embodiment, the transportation plate member is, for example but not limited to, a wooden board, and the wooden board is detachably matched with the bottom structure 16. When the power equipment 100 is transported to the assembly site, the transportation plate member is removed, and the bottom structure 16 is fixed to the base (not shown) provided at the site, wherein the bottom structure 16 is matched with the base provided at the site, thereby realizing rapid assembly and positioning. FIG. 9 schematically shows a side view of the power device according to the second embodiment of the present invention, where the cable is hidden, and FIG. 10 is a perspective view of the installation cabinet and the installation bracket of the power device shown in FIG. 9. As shown in FIGS. 9 and 10, in this embodiment, the power device 101 includes a plurality of first air ducts 181 and second air ducts 182. The plurality of first air ducts 181 are located on the top side of the plurality of power modules 2. The second air ducts 182 are located on the bottom side of the plurality of power modules 2. The cold air enters the power module 2 through the second air ducts 182, exchanges heat with the power module 2 to form hot air, and then the hot air is discharged from the power module 2 through the first air ducts 181. Through the arrangement of the first air ducts 181 and the second air ducts 182, the cold air with sufficient heat exchange capacity enters the power module 2, thereby improving the heat dissipation efficiency. As shown in FIGS. 9 and 10, in this embodiment, the plurality of first air ducts 181 include a front air duct 181a, a middle air duct 181b, and a rear air duct 181c. The front air duct 181a is arranged corresponding to the front side of the first array X, the middle air duct 181b is located between the first array X and the second array Y, and the rear air duct 181c is arranged corresponding to the rear side of the second array Y. In this embodiment, the installation bracket 3 of the power device 101 has a height H, so that the second air ducts 182 are formed between the installation cabinet 1 and the plurality of power modules 2. Through the arrangement of the first air ducts 181 and the second air ducts 182, the hot air is discharged from the top of the power module 2, and the cold air enters from the bottom side of the power module 2, thereby improving the heat dissipation efficiency. Further, by adjusting the height H of the installation bracket 3, the volume of the second air ducts 182 is adjusted, and then the air intake volume of the cold air is adjusted to meet the heat dissipation requirements. As shown in FIGS. 9 and 10, in this embodiment, at least a part of the second air duct 182 is located between the first array X and the second array Y. The mounting bracket 3 includes a partition 301 and a plurality of columns 302. The plurality of columns 302 are respectively arranged corresponding to the second ends 31b of the first guide rail 31 or the second ends 32b of the second guide rail 32, and extend in a direction away from the first guide rail 31 or the second guide rail 32. The partition 301 is arranged on the plurality of columns 302 and is spaced from the first guide rail 31 and the second guide rail 32. When the plurality of power modules 2 are respectively mounted on the first guide rail 31 and the second guide rail 32, the partition 301 is separated between the middle air duct 181b and the second air duct 182. By separating the middle air duct 181b and the second air duct 182 through the partition 301, the hot air in the middle air duct 181b is prevented from sinking to the second air duct 182, so that the cold air and the hot air are isolated, thereby improving the heat dissipation efficiency. Further, by adjusting the setting position of the partition 301 (such as the height of the column 302), the volume of the second air duct 182 is adjusted, and then the air intake of the cold air is adjusted to meet the heat dissipation requirements. The second air duct 182 includes the space formed by the mounting bracket 3, the top of the installation cabinet 1 and the power module 2, and the space formed by the partition 301 and the power module 2, and all parts of the second air duct 182 are connected. In summary, the present invention provides a power device, and the power modules of the double-row array are detachably mounted on the top of the installation cabinet, achieving the effect of increasing the total output power. The plurality of power modules and the installation cabinet form a main body for transportation, improving the transportation efficiency of the power device and saving transportation resources. The above specifically shows and describes the exemplary embodiments of the present utility model. It should be understood that the present utility model is not limited to the disclosed embodiments. On the contrary, the present utility model intends to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. 100, 101: Power equipment 1: Installation cabinet 1a: Top 1b: First side 1c: Second side 1d: Front 1e: Rear 11: Interface 111: First interface 112: Second interface 113: Third interface 12: Cable 121: DC cable 121b: Second end 122: AC cable 122b: Second end 123: Control cable 123b: Second end 13: First compartment 13a: First DC compartment 13b: First AC compartment 13c: First wiring compartment 130: Hole 14: Second compartment 14a: Second DC compartment 14b: Second AC compartment 14c: Second wiring compartment 140: Hole 151: DC busbar 151a: DC terminal 151b: DC busbar array 152: AC busbar 152a: AC terminal 152b: AC terminal array 153: Control box 16: Bottom structure 181: First air duct 181a: Front air duct 181b: Middle air duct 181c: Rear air duct 182: Second air duct 2: Power module 2a: First group of power modules 2b: Second group of power modules 3: Mounting bracket 301: Partition 302: Column 31: First guide rail 31a: First end 31b: Second end 311: Card slot 312: Fixing hole 32: Second guide rail 32a: First end 32b: Second end 321: Card slot 322: Fixing hole 33: Connection section A: Connection busbar B: Transformer X: First array Y: Second array Figure 1 schematically shows a perspective view of the power equipment according to the first embodiment of the present invention. Figure 2 is an exploded view of the power equipment shown in Figure 1, where the cables of the installation cabinet are hidden. Figure 3 is a perspective view of the mounting bracket of the power equipment shown in Figure 1. Figure 4 is a top view of the power equipment shown in Figure 1 connected to a transformer. Figure 5 is a perspective view of the installation cabinet of the power equipment shown in Figure 1. Figure 6 is a perspective view of the installation cabinet of the power equipment shown in Figure 5, where the top, front panel, left panel and cables of the installation cabinet are hidden. Figure 7 is a perspective view of the DC busbar of the power equipment shown in Figure 6. Figure 8 is a perspective view of the AC busbar of the power equipment shown in Figure 6. Figure 9 schematically shows a side view of the power equipment according to the second embodiment of the present invention, where the cables are hidden. Figure 10 is a perspective view of the installation cabinet and mounting bracket of the power equipment shown in Figure 9. 100: Power equipment 1: Installation cabinet 1a: Top 1b: First side 1c: Second side 1d: Front 1e: Rear 11: Interface 16: Bottom structure 12: Cable 121: DC cable 122: AC cable 123: Control cable 2: Power module 2a: First set of power modules 2b: Second set of power modules 3: Mounting bracket X: First array

Claims

1. A power device, comprising: An installation cabinet includes a top; and multiple power modules, including a first group of power modules and a second group of power modules. The first group of power modules is electrically connected to the installation cabinet, arranged adjacently and detachably installed on the top of the installation cabinet to form a first array. The second group of power modules is electrically connected to the installation cabinet, arranged adjacently and detachably installed on the top of the installation cabinet to form a second array. The power modules in the first array and the power modules in the second array are arranged back-to-back. The power device includes multiple first air ducts and a second air duct. The multiple first air ducts are located on the top side of the multiple power modules, and the second air duct is located on the bottom side of the multiple power modules. Cold air enters the power module through the second air duct, and hot air is discharged from the power module through the first air duct.

2. The power equipment as described in claim 1, wherein the assembled mounting cabinet and the plurality of power modules are transported as a single unit.

3. The power device as claimed in claim 1, wherein each power module is mounted on the top of the mounting cabinet via a mounting bracket.

4. The power device as described in claim 3, wherein a power module in the first array and a corresponding power module in the second array are arranged back-to-back, and the two back-to-back power modules are mounted on the top of the mounting cabinet via the same mounting bracket.

5. The power device as claimed in claim 1, wherein the power module in the first array is disposed on a front side of the top of the mounting cabinet, and the power module in the second array is disposed on a rear side of the top of the mounting cabinet; the mounting cabinet includes multiple sets of interfaces, the multiple sets of interfaces including a first row of interfaces and a second row of interfaces, wherein the first row of interfaces is disposed on a front side of the mounting cabinet, and each set of interfaces in the first row of interfaces corresponds to a power module in the first array, and the second row of interfaces is disposed on a rear side of the mounting cabinet, and each set of interfaces in the second row of interfaces corresponds to a power module in the second array.

6. The power device as claimed in claim 5, wherein each set of interfaces includes a first interface, a second interface, and a third interface; and the mounting cabinet includes a first compartment and a second compartment, the first compartment being disposed on the front side of the mounting cabinet and corresponding to the first array, the second compartment being disposed on the rear side of the mounting cabinet and corresponding to the second array, wherein the first compartment includes a first DC compartment, a first AC compartment, and a first wiring compartment, the first DC compartment being adjacent to the first AC compartment, and the first wiring compartment being connected to and disposed on the top of the first DC compartment and the first AC compartment; the second compartment includes a second DC compartment, a second AC compartment, and a second wiring compartment, the second DC compartment being adjacent to the second AC compartment, and the second wiring compartment being connected to and disposed on the top of the second DC compartment and the second AC compartment, wherein the first compartment and the second compartment are either interconnected or separated.

7. The power device as described in claim 6, wherein the first DC compartment and the second DC compartment are respectively provided with: multiple sets of DC buses; and multiple sets of DC cables, wherein a first end of each set of DC cables is electrically connected to a set of DC buses, and enters the first wiring compartment or the second wiring compartment from bottom to top, and a second end of each set of DC cables is reserved in the first wiring compartment or the second wiring compartment; wherein, After the power module is installed, the second end of each set of DC cables passes through the first interface in a set of interfaces and is electrically connected to the DC terminal of the power module.

8. The power device as described in claim 6, wherein the first AC compartment and the second AC compartment are respectively provided with: multiple sets of AC terminals; and multiple sets of AC cables, wherein a first end of each set of AC cables is electrically connected to a set of AC terminals, and enters the first wiring compartment or the second wiring compartment from bottom to top, and a second end of each set of AC cables is reserved in the first wiring compartment or the second wiring compartment; wherein, After the power module is installed, the second end of each set of AC cables passes through the second interface of the set of interfaces and is electrically connected to an AC terminal of the power module.

9. The power device as described in claim 6, wherein the first AC compartment and the second AC compartment are respectively provided with: a control box; and multiple sets of control cables, a first end of each set of control cables being electrically connected to the control box, entering the first wiring compartment or the second wiring compartment from bottom to top, and a second end of each set of control cables being reserved in the first wiring compartment or the second wiring compartment; wherein, After the power module is installed, the second end of each set of control cables passes through the third interface of a set of interfaces and is electrically connected to a control board of the power module.

10. The power device as claimed in claim 1, wherein the number of power modules in the first array is equal to the number of power modules in the second array.

11. The power device as claimed in claim 1, wherein the mounting cabinet includes a bottom structure and a transport plate connected to the bottom structure for transport, wherein when the power device is transported to the site, the transport plate is removed so that the bottom structure is fixed to a base located at the site.

12. The power device as claimed in claim 1, wherein the plurality of first air ducts includes a front air duct, a middle air duct and a rear air duct, the front air duct being disposed on the front side of the first array, the middle air duct being located between the first array and the second array, and the rear air duct being disposed on the rear side of the second array.

13. The power device as claimed in claim 3, wherein the mounting bracket has a height such that the second air duct is formed at least partially between the mounting cabinet and the plurality of power modules.

14. The power device as claimed in claim 12, wherein at least a portion of the second air duct is located between the first array and the second array, wherein the mounting bracket includes a partition separating the intermediate air duct and the second air duct.

15. The power device as described in claim 13, wherein the volume of the second air duct is adjusted by adjusting the height of the mounting bracket.

16. The power device as claimed in claim 14, wherein the volume of the second air duct is adjusted by adjusting the position of the partition.

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