An integrated power conversion device

Abstract

The utility model relates to the technical field of energy storage, disclose an integrated electric energy conversion equipment, including the cabinet, at least one baffle is equipped in the cabinet, the baffle makes the cabinet formed the first accommodating cavity and second accommodating cavity of upper and lower arrangement, be equipped with MPPT controller in the first accommodating cavity, be equipped with parallel and off -grid controller in the second accommodating cavity, the electric row subassembly is located in the second accommodating cavity, and with MPPT controller and parallel and off -grid controller respectively electricity is connected, the electric row subassembly includes a plurality of terminal, the terminal includes at least one first terminal that is configured to be accessed for load, at least one second terminal that is configured to be accessed for generator, at least one third terminal that is configured to be accessed for energy storage device and at least one fourth terminal that is configured to be accessed for power grid. The utility model has the advantages of supporting multiple different energy conversion into electric energy.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to an integrated power conversion device. Background Technology

[0002] With the development of renewable energy applications, hybrid power supply systems integrating photovoltaic power generation, battery energy storage, and grid-connected / off-grid switching have become an important solution for remote areas, regions with unstable power grids, and scenarios with high reliability requirements. This system utilizes photovoltaics to achieve clean energy utilization, uses energy storage devices to smooth out fluctuations and provide short-term backup power, and relies on grid-connected / off-grid switching controllers to ensure seamless power supply during grid failures, thereby significantly improving energy self-sufficiency and power supply continuity. However, photovoltaic power supply is limited by solar radiation intensity and weather conditions. During periods of continuous rain, dust storms, or insufficient solar radiation in winter, power generation will decrease significantly. In such cases, the power supply time relying solely on energy storage devices is limited by battery capacity and cannot support long-term high-load operation. Especially under extreme weather conditions or during prolonged peak electricity demand periods, relying solely on photovoltaics and energy storage devices may not be able to meet the continuous and stable power supply needs. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose an integrated power conversion device that supports the conversion of multiple different energy sources into electrical energy.

[0004] The technical solution adopted by this utility model to solve its technical problem is to provide an integrated power conversion device, comprising:

[0005] The cabinet has at least one partition inside, which forms a first accommodating cavity and a second accommodating cavity arranged vertically inside the cabinet. The first accommodating cavity is equipped with an MPPT controller, and the second accommodating cavity is equipped with an on-grid / off-grid controller.

[0006] A busbar assembly is disposed within the second accommodating cavity and electrically connected to the MPPT controller and the grid-connected / off-grid controller, respectively. The busbar assembly includes multiple terminals, including at least one first terminal configured for load access, at least one second terminal configured for generator access, at least one third terminal configured for energy storage device access, and at least one fourth terminal configured for grid access.

[0007] In the aforementioned integrated power conversion device, the second accommodating cavity is provided with a plurality of fixing rods spaced apart along the length of the cabinet. The two ends of the fixing rods are detachably connected to the two sides of the cabinet, and the fixing rods have a plurality of mounting holes spaced apart along their own length. The conductive bus assembly is detachably connected to the mounting holes by fasteners.

[0008] In the aforementioned integrated power conversion device, a horizontally arranged first mounting plate is detachably provided in the middle of the second accommodating cavity, the grid-connected controller is detachably mounted on the first mounting plate, and there is a gap between the first mounting plate and the side wall of the cabinet for the conductive busbar assembly to pass through.

[0009] In the aforementioned integrated power conversion device, a limiting rod is provided in the second accommodating cavity above the first mounting plate. The two ends of the limiting rod are detachably connected to the two sides of the cabinet, and the vertical distance between the limiting rod and the first mounting plate is adapted to the height of the grid-connected controller.

[0010] In the aforementioned integrated power conversion device, a terminal block is detachably provided at the bottom of the second accommodating cavity. The terminal block is electrically connected to the MPPT controller and is configured as the access terminal for the photovoltaic panel.

[0011] In the aforementioned integrated power conversion device, a vertically arranged second mounting plate is provided in the second accommodating cavity. The two ends of the second mounting plate are detachably connected to the two sides of the cabinet, and at least one circuit breaker is detachably provided on the second mounting plate.

[0012] In the aforementioned integrated power conversion device, multiple circuit breakers are provided, including a first circuit breaker, a second circuit breaker, and a third circuit breaker. The first circuit breaker is used to connect or disconnect the circuit connected to the first terminal, the second circuit breaker is used to connect or disconnect the circuit connected to the third terminal, and the third circuit breaker is used to connect or disconnect the circuit connected to the terminal block.

[0013] In the aforementioned integrated power conversion device, a vertically arranged third mounting plate is provided in the second accommodating cavity. The two ends of the third mounting plate are detachably connected to the two sides of the cabinet, and at least one circuit breaker is detachably provided on the third mounting plate.

[0014] In the aforementioned integrated power conversion device, multiple circuit breakers are provided, including a fourth circuit breaker, a fifth circuit breaker, and a sixth circuit breaker. The fourth circuit breaker is used to connect or disconnect the circuit connected to the second terminal, and the fifth and sixth circuit breakers are respectively used to connect or disconnect the circuit connected to the fourth terminal.

[0015] In the aforementioned integrated power conversion device, the cabinet includes a front door and a rear door. The front door is provided with an air inlet, and the rear door is provided with an air outlet. The air inlet and the air outlet are respectively opposite to and connected to the first accommodating cavity; and / or an exhaust fan is detachably provided in the first accommodating cavity, with the exhaust end of the exhaust fan opposite to the air outlet.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. In this utility model, by setting a partition inside the cabinet to form an upper and lower accommodating cavity, and integrating an MPPT controller, a grid-connected controller, and a busbar assembly, a highly integrated design for the access and power conversion of multiple energy sources such as photovoltaics, energy storage, grid, and generators is achieved. This not only effectively solves the problems of low space utilization, complex wiring, and difficult maintenance caused by the dispersed installation of equipment in traditional systems, but also makes up for the lack of backup power support in the existing technology by specially configuring a generator access terminal. Thus, when photovoltaic power supply is insufficient or energy storage capacity is limited, the generator power supply can be quickly activated, significantly improving the power supply continuity and operational reliability of the system.

[0018] 2. In this utility model, the second accommodating cavity is provided with multiple fixing rods spaced apart along the length of the cabinet. The two ends of each fixing rod are detachably connected to both sides of the cabinet, and each fixing rod has multiple mounting holes spaced apart along its own length. The conductive busbar assembly is detachably connected to the mounting holes via fasteners. This design improves the flexibility and maintainability of the conductive busbar assembly installation, facilitates adjustment of the installation position according to actual wiring requirements, enhances structural stability and assembly efficiency, and helps improve the overall modularity of the equipment and the convenience of on-site installation.

[0019] 3. In this utility model, by setting a second mounting plate and a third mounting plate within the second accommodating cavity, and installing multiple circuit breakers on the second and third mounting plates, independent protection for photovoltaic, energy storage, power grid, generator, and load is achieved. This design enables each functional circuit to have independent on / off control and overload protection capabilities, which not only improves the safety and operational stability of the system, but also facilitates fault diagnosis and daily maintenance, further enhancing the practicality and operability of the equipment. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure of an integrated power conversion device according to the present invention.

[0021] Figure 2 for Figure 1 A structural diagram from another perspective.

[0022] Figure 3 This is a schematic diagram of the structure of an integrated power conversion device of this utility model, hidden behind the front door.

[0023] Figure 4 This is a schematic diagram of the structure of an integrated power conversion device of this utility model, hidden behind the front door.

[0024] Figure 5 This is a partial structural schematic diagram of an integrated power conversion device according to the present invention.

[0025] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0026] 100. Cabinet body; 101. First accommodating cavity; 102. Second accommodating cavity; 110. Front door; 111. Air inlet; 120. Rear door; 121. Air outlet; 130. Top plate; 140. Bottom plate; 150. Side plate; 200. Partition; 210. Fixing rod; 211. Mounting hole; 220. First mounting plate; 230. Limiting rod; 240. Second mounting plate; 250. Third mounting plate; 300. MPPT controller; 400. Parallel / offline grid controller; 500. Conductive busbar assembly 501, First terminal; 502, Second terminal; 503, Third terminal; 504, Fourth terminal; 510, First conductor busbar group; 520, Second conductor busbar group; 530, Third conductor busbar group; 540, Fourth conductor busbar group; 550, Fifth conductor busbar group; 600, Terminal block; 700, First circuit breaker; 710, Second circuit breaker; 720, Third circuit breaker; 730, Fourth circuit breaker; 740, Fifth circuit breaker; 750, Sixth circuit breaker; 800, Exhaust fan. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 5 As shown, in this embodiment, an integrated power conversion device includes:

[0033] The cabinet 100 has at least one partition 200 inside, which forms a first accommodating cavity 101 and a second accommodating cavity 102 arranged vertically inside the cabinet 100. The first accommodating cavity 101 is equipped with an MPPT controller 300, and the second accommodating cavity 102 is equipped with a parallel and offline controller 400.

[0034] A busbar assembly 500, located within the second accommodating cavity 102, is electrically connected to the MPPT controller 300 and the grid-connected / off-grid controller 400, respectively. The busbar assembly 500 includes multiple terminals, including at least one first terminal 501 configured for load connection, at least one second terminal 502 configured for generator connection, at least one third terminal 503 configured for energy storage device connection, and at least one fourth terminal 504 configured for grid connection. This design achieves a high degree of integration of multiple energy sources such as photovoltaics, energy storage, grid, and generators with power conversion. It effectively solves the problems of low space utilization, complex wiring, and difficult maintenance caused by the dispersed installation of equipment in traditional systems. Furthermore, by specifically configuring a generator connection terminal, it compensates for the lack of backup power support in existing technologies. Therefore, when photovoltaic power supply is insufficient or energy storage capacity is limited, generator power can be quickly activated, significantly improving the system's power supply continuity and operational reliability.

[0035] In this embodiment, the integrated power conversion equipment is mainly used to realize the power conversion and coordinated control between photovoltaic power generation, energy storage system, power grid, generator power generation and load. It is suitable for application scenarios with unstable power grid or high requirements for power supply continuity.

[0036] like Figures 1 to 5 As shown, the integrated power conversion device includes a cabinet 100, which is rectangular and includes a front door 110, a rear door 120, a top plate 130, a bottom plate 140, and two side plates 150. These components together form a closed internal space.

[0037] Furthermore, the front door 110 is provided with an air inlet 111, and the rear door 120 is provided with an air outlet 121 arranged opposite to the air inlet 111. The air inlet 111 and the air outlet 121 are respectively opposite to and connected to the first accommodating cavity 101, thereby providing an effective air circulation path for the first accommodating cavity 101 and realizing the natural heat dissipation function of its internal components.

[0038] Furthermore, a detachable exhaust fan 800 is installed within the first accommodating cavity 101. The exhaust end of the exhaust fan 800 is opposite to the air outlet 121, and it is used to actively extract hot air from the first accommodating cavity 101 to the outside of the cabinet 100, thereby enhancing the air circulation efficiency inside the cabinet 100 and improving heat dissipation. This design is particularly suitable for high-temperature or high-load operating environments, and can effectively prevent key components such as the MPPT controller 300 from experiencing performance degradation or failure due to excessive temperature, thus ensuring the stable operation of the system.

[0039] In this embodiment, the cabinet 100 is provided with at least one horizontally arranged partition 200. This partition 200 divides the internal space of the cabinet 100 into a first accommodating cavity 101 and a second accommodating cavity 102 arranged vertically, with the space of the first accommodating cavity 101 being smaller than that of the second accommodating cavity 102. The first accommodating cavity 101, located above the partition 200, is mainly used to install the MPPT controller 300; the second accommodating cavity 102, located below the partition 200, is used to install the grid-connected / off-grid controller 400, the busbar assembly 500, and multiple circuit breakers. These components work together to realize the power conversion and protection functions of the system under different operating modes. This design, by rationally dividing the internal space of the cabinet 100 and installing key components such as the MPPT controller 300 and the grid-connected / off-grid controller 400 in separate zones, not only improves the integration and modularity of the equipment and enhances the maintainability and ease of operation of the system, but also meets the heat dissipation requirements of the MPPT controller 300 while ensuring waterproofing for other components.

[0040] Furthermore, the partition 200 is rectangular, and its external dimensions are adapted to the internal cross-sectional area of ​​the cabinet 100. After installation, it can form a good sealing fit with the internal structure of the cabinet 100, thereby effectively preventing the liquid in the first accommodating cavity 101 from flowing into the second accommodating cavity 102, and playing a good role in isolation and protection.

[0041] In this embodiment, the second accommodating cavity 102 is provided with a plurality of fixing rods 210 spaced apart along the length of the cabinet 100. These fixing rods 210 are horizontally arranged, and their two ends are detachably connected to both sides of the cabinet 100 by fasteners. Each fixing rod 210 has a plurality of mounting holes 211 spaced apart along its length to provide mounting positions for the conductive busbar assembly 500. This design enables flexible positioning and stable installation of the conductive busbar assembly 500. Conductive busbar assemblies 500 of different specifications or sizes can be fixed using appropriate mounting hole 211 positions according to actual wiring requirements, effectively improving the adaptability and assembly flexibility of the equipment. Simultaneously, the fixing rods 210 and the cabinet 100 are detachably connected, facilitating quick disassembly and installation during maintenance or replacement of the conductive busbar assembly 500, thus improving the maintainability and modularity of the equipment.

[0042] Furthermore, the cross-section of the fixing rod 210 is U-shaped. This design not only improves the bending resistance of the fixing rod 210 itself, but also plays a certain guiding and limiting role during the installation of the conductive busbar assembly 500, thereby improving installation efficiency and assembly accuracy.

[0043] Furthermore, the mounting holes 211 are equidistantly distributed along the length of the fixing rod 210, and the mounting holes 211 are oblong holes. This design allows the busbar assembly 500 to be finely adjusted within a certain range to accommodate different specifications or installation errors, thereby improving assembly efficiency and system maintainability.

[0044] In this embodiment, a horizontally arranged first mounting plate 220 is detachably provided in the middle of the second accommodating cavity 102 for mounting and disconnecting the controller 400. One or both sides of the first mounting plate 220 have gaps between them and the side wall of the cabinet 100, allowing the conductive busbar assembly 500 to pass through. This design not only ensures the flexibility of wiring and installation of the conductive busbar assembly 500, but also effectively improves the utilization rate of the internal space of the cabinet 100, making the overall structure more compact and rational.

[0045] Furthermore, the first mounting plate 220 has a U-shaped structure and extends along the depth direction of the cabinet 100. Two crossbeams are spaced apart along the depth direction inside the cabinet 100, and the first mounting plate 220 is detachably snapped onto the two crossbeams for initial fixation. This design not only enhances the load-bearing capacity of the first mounting plate 220 but also facilitates its rapid positioning, installation, and disassembly, improving the modularity and maintainability of the equipment.

[0046] Furthermore, L-shaped connecting brackets are detachably provided on both sides of the cabinet 100. One end of each connecting bracket is detachably connected to the inner wall of the cabinet 100 via fasteners, and the other end is detachably connected to the first mounting plate 220 via fasteners. This design further enhances the structural stability and load-bearing capacity of the first mounting plate 220, thereby improving the robustness of the grid-connected controller 400 installation and its operational reliability. Simultaneously, the L-shaped connecting bracket structure also helps to distribute the installation load, avoid localized stress concentration, and improve the overall structural strength and service life of the equipment.

[0047] In this embodiment, a limiting rod 230 is provided within the second accommodating cavity 102, located above the first mounting plate 220. The two ends of the limiting rod 230 are detachably connected to both sides of the cabinet 100 via fasteners, and the vertical distance between the limiting rod 230 and the first mounting plate 220 is adapted to the height of the grid-connected controller 400. This design allows the limiting rod 230 to work in conjunction with the first mounting plate 220, effectively limiting the height of the grid-connected controller 400 during installation. This prevents vertical displacement or shaking of the inverter during transportation, installation, or operation, thereby improving its installation stability and structural reliability. Furthermore, the detachable connection of the limiting rod 230 facilitates adjustment or replacement according to different inverter specifications, enhancing the equipment's versatility and adaptability.

[0048] Furthermore, the limiting rod 230 is provided with a groove extending along its own length, and multiple through holes that penetrate the groove and are equidistantly arranged along the length of the limiting rod 230. This design allows the limiting rod 230 to also be used as a cable tie rod.

[0049] In this embodiment, a vertically arranged second mounting plate 240 is provided in the second accommodating cavity 102. The second mounting plate 240 is rectangular, and its two ends are detachably connected to both sides of the cabinet 100 by fasteners, for supporting and fixing electrical components such as circuit breakers.

[0050] Furthermore, at least one circuit breaker is detachably mounted on the second mounting plate 240. Preferably, multiple circuit breakers are provided to achieve independent control and protection of different functional circuits. These include a first circuit breaker 700, a second circuit breaker 710, and a third circuit breaker 720. Specifically, the first circuit breaker 700 is used to connect or disconnect the circuit connected to the first terminal 501, i.e., to control the on / off state of the load side; the second circuit breaker 710 is used to connect or disconnect the circuit connected to the third terminal 503, i.e., to control the on / off state of the energy storage device side; and the third circuit breaker 720 is used to connect or disconnect the circuit connected to the terminal block 600, i.e., to control the on / off state of the photovoltaic module access circuit. This design, by setting multiple circuit breakers on the second mounting plate 240 and independently controlling different functional circuits, not only improves the system's safety and maintainability but also facilitates fault isolation and rapid power restoration, enhancing the equipment's adaptability and operational reliability in complex operating environments.

[0051] In this embodiment, a vertically arranged third mounting plate 250 is provided in the second accommodating cavity 102. The third mounting plate 250 is rectangular, and its two ends are detachably connected to the two sides of the cabinet 100 by fasteners. It is also used to support and fix electrical components such as circuit breakers.

[0052] Furthermore, at least one circuit breaker is detachably mounted on the third mounting plate 250. Preferably, multiple circuit breakers are provided to achieve independent control and protection of different functional circuits. These include a fourth circuit breaker 730, a fifth circuit breaker 740, and a sixth circuit breaker 750. The fourth circuit breaker 730 is used to connect or disconnect the circuit connected to the second terminal 502, i.e., to control the on / off state of the generator side; the fifth circuit breaker 740 and the sixth circuit breaker 750 are respectively used to connect or disconnect the circuit connected to the fourth terminal 504, thus enabling multi-path parallel control of the grid side and meeting the power access and switching requirements under different operating modes. By setting the above-mentioned circuit breaker group on the third mounting plate 250, independent control and protection of the generator and grid access circuits are achieved, improving the system's operational flexibility and safety. In addition, by setting two independent circuit breakers to control the grid side, not only is the system's flexibility and safety during grid-connected operation improved, but redundant protection of the grid access circuit is also achieved. If one circuit fails or requires maintenance, the other circuit can continue to operate, thus ensuring the system's continuous power supply capability and operational reliability.

[0053] Furthermore, the second mounting plate 240 is located at the bottom of the second accommodating cavity 102, and the third mounting plate 250 is located at the top of the second accommodating cavity 102. This vertically distributed layout makes reasonable use of the internal space of the cabinet 100, making the arrangement of electrical components clearer and more orderly, and facilitating wiring, operation, and subsequent maintenance.

[0054] In this embodiment, the bottom of the second accommodating cavity 102 is detachably provided with a terminal block 600, which not only improves the convenience of wiring operations, but also enhances the modular design of the system, making it easier for on-site installation and subsequent maintenance.

[0055] Furthermore, the terminal block 600 is electrically connected to the MPPT controller 300 and is configured as the access terminal of the photovoltaic panel, serving as the electrical connection interface between the photovoltaic panel and the MPPT controller 300, for realizing centralized access of the DC side of the photovoltaic module.

[0056] In this embodiment, the MPPT controller 300 is responsible for converting the DC power generated by the photovoltaic panel into AC power so that it can be connected to the power grid or load.

[0057] Furthermore, the MPPT controller 300 is detachably mounted on the partition 200 via fasteners, which not only improves the modularity of the equipment but also facilitates disassembly and maintenance, allowing the MPPT controller 300 to be quickly replaced or upgraded, reducing downtime and improving the system's flexibility and reliability.

[0058] In this embodiment, the grid-connected and off-grid controller 400 has an intelligent switching function, which can automatically switch between grid-connected mode and off-grid mode to ensure that the power supply to critical loads can still be maintained in the event of a grid failure.

[0059] Furthermore, the grid-connected controller 400 is detachably mounted on the first mounting plate 220 by fasteners, which not only improves the modularity of the equipment, but also facilitates disassembly and maintenance, allowing the grid-connected controller 400 to be quickly replaced or repaired when needed, thereby enhancing the reliability and ease of operation of the system.

[0060] In this embodiment, the busbar assembly 500 is used to realize efficient power transmission and distribution among the MPPT controller 300, the grid-connected controller 400, the circuit breaker group and external access devices (such as loads, energy storage devices, power grids, generators, etc.).

[0061] Furthermore, the busbar assembly 500 is composed of multiple independent busbars, which are independently arranged and connected according to functional requirements. This can avoid electrical interference between different circuits and meet the requirements of high current transmission, thereby improving the safety and stability of system operation.

[0062] Furthermore, the busbar is made of a metal material with good electrical conductivity, such as copper or aluminum. Preferably, the busbar assembly 500 is composed of multiple independent copper busbars, which has advantages such as excellent electrical conductivity, high mechanical strength, and strong corrosion resistance.

[0063] Furthermore, the busbar assembly 500 includes a first busbar group 510, a second busbar group 520, a third busbar group 530, a fourth busbar group 540, and a fifth busbar group 550 that are detachably connected to the mounting holes 211 of the fixing rod 210 via fasteners, for installation, commissioning, and subsequent maintenance.

[0064] Specifically, the first busbar group 510 includes multiple output busbars and input busbars. The output busbars are located at the output end of the first circuit breaker 700 and are detachably connected to the mounting hole 211 of the fixing rod 210 via fasteners. The output busbars include a first terminal 501 configured for load access to achieve electrical connection with the load. The input busbars are located at the input end of the first circuit breaker 700 and are detachably connected to the fixing plate or fixing seat on the back side of the grid-connected controller 400 via fasteners. The input busbars are electrically connected to the grid-connected controller 400.

[0065] Furthermore, the second busbar group 520 includes multiple output busbars and input busbars. The output busbars are located at the output end of the fourth circuit breaker 730 and are detachably connected to the mounting hole 211 of the fixing rod 210 via fasteners. The output busbars also include a second terminal 502 configured for connection to a generator to achieve electrical connection with the generator. The input busbars are located at the input end of the fourth circuit breaker 730 and are detachably connected to the fixing plate or fixing seat on the back side of the grid connection / off-grid controller 400 via fasteners. The input busbars are also electrically connected to the grid connection / off-grid controller 400.

[0066] Furthermore, the third busbar group 530 includes multiple output busbars and input busbars. The output busbars are located at the output end of the second circuit breaker 710 and are detachably connected to the mounting hole 211 of the fixing rod 210 via fasteners. The output busbars include a third terminal 503 configured for access to an energy storage device to achieve electrical connection with the energy storage device. The input busbars are located at the input end of the second circuit breaker 710 and are detachably connected to the fixing plate or fixing seat on the back side of the grid-connected controller 400 via fasteners. The input busbars are electrically connected to the grid-connected controller 400.

[0067] Furthermore, the fourth busbar group 540 includes multiple output busbars and input busbars. The output busbars are located at the output end of the fifth circuit breaker 740 and are detachably connected to the mounting hole 211 of the fixing rod 210 via fasteners. The output busbars also include a fourth terminal 504 configured for connection to the power grid to achieve electrical connection with the power grid. The input busbars are located at the input end of the fifth circuit breaker 740 and are detachably connected to the fixing plate or fixing seat on the back side of the grid-connected controller 400 via fasteners. The input busbars are also electrically connected to the grid-connected controller 400.

[0068] Furthermore, the fifth busbar group 550 includes multiple output busbars and input busbars. The output busbars are located at the output end of the sixth circuit breaker 750 and are detachably connected to the mounting hole 211 of the fixing rod 210 via fasteners. The output busbars also include a fourth terminal 504 configured for connection to the power grid to achieve electrical connection with the power grid. The input busbars are located at the input end of the sixth circuit breaker 750 and are detachably connected to the fixing plate or fixing seat on the back side of the grid-connected controller 400 via fasteners. The input busbars are also electrically connected to the grid-connected controller 400.

Claims

1. An integrated power conversion device, characterized in that, include: A cabinet (100) is provided with at least one partition (200) inside the cabinet (100). The partition (200) forms a first accommodating cavity (101) and a second accommodating cavity (102) arranged vertically inside the cabinet (100). An MPPT controller (300) is provided in the first accommodating cavity (101), and an on-grid / off-grid controller (400) is provided in the second accommodating cavity (102). A busbar assembly (500) is disposed in the second accommodating cavity (102) and electrically connected to the MPPT controller (300) and the grid-connected / off-grid controller (400) respectively. The busbar assembly (500) includes a plurality of terminals, including at least one first terminal (501) configured for load access, at least one second terminal (502) configured for generator access, at least one third terminal (503) configured for energy storage device access, and at least one fourth terminal (504) configured for power grid access.

2. The integrated power conversion device according to claim 1, characterized in that, The second accommodating cavity (102) is provided with a plurality of fixing rods (210) spaced apart along the length of the cabinet (100). The two ends of the fixing rods (210) are detachably connected to the two sides of the cabinet (100), and the fixing rods (210) have a plurality of mounting holes (211) spaced apart along their own length. The conductive bus assembly (500) is detachably connected to the mounting holes (211) by fasteners.

3. An integrated power conversion device according to claim 2, characterized in that, The second accommodating cavity (102) is detachably provided with a horizontally arranged first mounting plate (220) in the middle, the on-grid controller (400) is detachably mounted on the first mounting plate (220), and there is a gap between the first mounting plate (220) and the side wall of the cabinet (100) for the conductive busbar assembly (500) to pass through.

4. An integrated power conversion device according to claim 3, characterized in that, The second accommodating cavity (102) is provided with a limiting rod (230) located above the first mounting plate (220). The two ends of the limiting rod (230) are detachably connected to the two sides of the cabinet (100), and the vertical distance between the limiting rod (230) and the first mounting plate (220) is adapted to the height of the grid controller (400).

5. An integrated power conversion device according to claim 1, characterized in that, The bottom of the second accommodating cavity (102) is detachably provided with a terminal block (600), which is electrically connected to the MPPT controller (300) and is configured as the access terminal of the photovoltaic panel.

6. An integrated power conversion device according to claim 5, characterized in that, The second accommodating cavity (102) is provided with a vertically arranged second mounting plate (240), the two ends of the second mounting plate (240) are respectively detachably connected to the two sides of the cabinet (100), and at least one circuit breaker is detachably provided on the second mounting plate (240).

7. An integrated power conversion device according to claim 6, characterized in that, The circuit breaker is provided in multiple parts, including a first circuit breaker (700), a second circuit breaker (710) and a third circuit breaker (720), wherein the first circuit breaker (700) is used to connect or disconnect the circuit connected to the first terminal (501), the second circuit breaker (710) is used to connect or disconnect the circuit connected to the third terminal (503), and the third circuit breaker (720) is used to connect or disconnect the circuit connected to the terminal block (600).

8. An integrated power conversion device according to claim 1, characterized in that, The second accommodating cavity (102) is provided with a vertically arranged third mounting plate (250), the two ends of the third mounting plate (250) are respectively detachably connected to the two sides of the cabinet (100), and at least one circuit breaker is detachably provided on the third mounting plate (250).

9. An integrated power conversion device according to claim 8, characterized in that, The circuit breaker is provided in multiple parts, including a fourth circuit breaker (730), a fifth circuit breaker (740) and a sixth circuit breaker (750), wherein the fourth circuit breaker (730) is used to connect or disconnect the circuit connected to the second terminal (502), and the fifth circuit breaker (740) and the sixth circuit breaker (750) are respectively used to connect or disconnect the circuit connected to the fourth terminal (504).

10. An integrated power conversion device according to claim 1, characterized in that, The cabinet (100) includes a front door (110) and a rear door (120). The front door (110) is provided with an air inlet (111), and the rear door (120) is provided with an air outlet (121). The air inlet (111) and the air outlet (121) are respectively opposite to and connected to the first accommodating cavity (101); and / or an exhaust fan (800) is detachably provided in the first accommodating cavity (101), and the exhaust end of the exhaust fan (800) is opposite to the air outlet (121).

Images