Photovoltaic energy storage cabinet

Abstract

The utility model provides a photovoltaic energy storage cabinet. The photovoltaic energy storage cabinet comprises a cabinet body, a cabinet door, an electrical module, an energy storage battery pack and a radiator. One transverse side of the cabinet body is open and hollow. The cabinet door is movably connected to the opening end of the cabinet body and used for opening and closing the opening of the cabinet body. The cabinet door is provided with an air outlet communicated with the interior of the cabinet body. The energy storage battery pack is arranged in the cabinet body and used for storing electric energy and supplying power. The electrical module is arranged at the position, corresponding to the air outlet, in the cabinet body and located on one side of the energy storage battery pack. The electrical module is electrically connected with the energy storage battery pack and is electrically connected with an external photovoltaic module, and the electrical module is used for controlling the photovoltaic module to charge the energy storage battery pack and converting direct current output by the energy storage battery pack into alternating current, so that the photovoltaic energy storage cabinet simultaneously has the functions of solar charging, electric energy storage, conversion of the direct current into the alternating current and the like. And the radiator is arranged at the air outlet of the cabinet door and is arranged corresponding to the electrical module, so that heat generated by the electrical module during working can be conveniently dissipated out of the cabinet body in time.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, in particular to a photovoltaic energy storage cabinet. Background Art

[0002] At present, ships' electricity supply is mainly guaranteed by diesel generators, which not only increases economic costs and causes pollution of river and sea water, but also increases the failure rate caused by frequent starting and stopping of generators.

[0003] With the widespread adoption of photovoltaic power generation and energy storage technologies, their advantages in reliability, accessibility, cost, and environmental friendliness are becoming increasingly apparent. To effectively utilize solar energy to power ships, equipment with energy storage and inverter capabilities is required.

[0004] Existing energy storage systems primarily separate the energy storage battery from electrical modules such as photovoltaic inverters for structural design, forming two sets of electrical cabinets. These cabinets are then connected and fixed by cable during on-site installation. This design significantly increases the workload for handling, transfer, transportation, and on-site installation of the energy storage system. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic energy storage cabinet with integrated energy storage, inversion and other functions.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present application, the present application provides a photovoltaic energy storage cabinet, comprising:

[0008] The cabinet body has an open side and a hollow interior;

[0009] A cabinet door is provided at the open end of the cabinet body and is movably connected to the cabinet body for opening and closing the opening of the cabinet body; the cabinet door is provided with an air outlet communicating with the interior of the cabinet body;

[0010] An energy storage battery pack is arranged in the cabinet, and is used for storing electrical energy and supplying power;

[0011] an electrical module disposed inside the cabinet and on one side of the energy storage battery module, the electrical module being disposed corresponding to the air outlet; the electrical module being electrically connected to the energy storage battery pack and being configured to be electrically connected to an external photovoltaic module; the electrical module being configured to control the photovoltaic module to charge the energy storage battery pack and to convert the direct current outputted by the energy storage battery pack into alternating current;

[0012] A radiator is provided at the air outlet of the cabinet door and is used to dissipate the heat generated by the electrical module to the outside of the cabinet.

[0013] In some embodiments, a vent is provided on the cabinet door corresponding to the energy storage battery pack, for dissipating heat generated by the energy storage battery pack out of the cabinet;

[0014] The photovoltaic energy storage cabinet includes a heat dissipation window arranged at the vent, and the heat dissipation window includes a window frame and a plurality of window blades. The window frame is fixed on the cabinet door, and the window frame is passed through at both ends perpendicular to the cabinet door and communicates with the vent; a plurality of window blades are connected to the window frame at vertical intervals, and two adjacent window blades and the window frame enclose the heat dissipation port.

[0015] In some embodiments, each of the window blades is inclined outward from top to bottom, or each of the window blades extends in a horizontal direction; or,

[0016] Each window blade is rotatably connected to the window frame, and the window blade can rotate relative to the window frame to adjust its own inclination angle.

[0017] In some embodiments, a partition is provided in the cabinet, the partition extending in the transverse direction, and the partition is used to separate the interior of the cabinet in the longitudinal direction to form an electrical cavity and a battery cavity, the electrical cavity is used to accommodate the electrical module, and the battery cavity is used to accommodate the energy storage battery pack;

[0018] There is a gap between the partition plate and the bottom surface of the cabinet body for cables to pass through.

[0019] In some embodiments, the electrical module includes a photovoltaic inverter, which is connected to the inner side of the cabinet, and there is a gap between the photovoltaic inverter and the bottom surface of the cabinet; the photovoltaic inverter includes a control module and an inverter module, the input end of the control module is electrically connected to the photovoltaic component, the output end of the control module is electrically connected to the input end of the energy storage battery pack, and the control module is used to control the photovoltaic component to charge the energy storage battery pack; the input end of the inverter module is electrically connected to the output end of the energy storage battery pack, the output end of the inverter module is electrically connected to the electrical device, and the inverter module is used to convert the direct current output of the energy storage battery pack into alternating current;

[0020] The electrical module further includes a DC circuit breaker, which is arranged on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the DC circuit breaker is electrically connected to the input end of the control module.

[0021] In some embodiments, the electrical module further includes a surge protector, which is disposed on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the surge protector is electrically connected to an input terminal of the control module;

[0022] The electrical module further includes an AC circuit breaker, which is disposed on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the AC circuit breaker is electrically connected to the output end of the inverter module;

[0023] The DC circuit breaker, the surge protector and the AC circuit breaker are distributed at intervals in the transverse direction at the lower portion of the partition.

[0024] In some embodiments, the energy storage battery pack includes a plurality of battery packs, and the plurality of battery packs are vertically spaced apart in the cabinet; the battery packs located at the bottom layer are spaced apart from the bottom surface of the cabinet;

[0025] The electrical module also includes a busbar, which is arranged on the inner side of the cabinet and has a gap with the bottom surface of the cabinet; the busbar is electrically connected to each of the battery packs and is used to converge the output current of multiple battery packs.

[0026] In some embodiments, the photovoltaic energy storage cabinet includes a first grounding member, which is provided on the bottom surface of the cabinet and connected to the energy storage battery pack;

[0027] The photovoltaic energy storage cabinet further includes a second grounding member, which is arranged on the outer side of the cabinet body.

[0028] In some embodiments, the cabinet includes a base and a plurality of columns, wherein the plurality of columns are erected on the base at intervals along the circumferential direction; the photovoltaic inverter of the electrical module is connected and fixed to at least two adjacent columns;

[0029] The cabinet further comprises a bottom plate, which is arranged on the top of the base and has a through hole communicating with the interior of the cabinet for allowing cables to pass through; the through hole is located below the electrical module;

[0030] The bottom plate is further provided with a through hole communicating with the interior of the cabinet; the through hole is spaced apart from the through hole and is located below the electrical module.

[0031] In some embodiments, a forklift hole is provided at the lower portion of the cabinet;

[0032] The top of the cabinet is provided with a plurality of lifting rings, which are distributed at intervals along the circumference of the top of the cabinet; the center of the structure enclosed by the plurality of lifting rings deviates from the center of the cabinet in the longitudinal direction toward the direction close to the energy storage battery pack; the lifting rings are provided with lifting holes.

[0033] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0034] In this application, the electrical module and energy storage battery pack are integrated into a single cabinet, allowing the photovoltaic energy storage cabinet to simultaneously control the photovoltaic modules' charging of the energy storage battery pack, store electrical energy, and convert the DC power output by the energy storage battery pack into AC power for power supply. Furthermore, because the electrical module and energy storage battery pack are connected within the cabinet, on-site installation / disassembly requires only connecting / disconnecting the input end of the photovoltaic energy storage cabinet's electrical module to / from the external photovoltaic modules, and connecting / disconnecting the output end of the electrical module to / from the electrical devices, without having to consider the connection between the electrical module and the energy storage battery pack. This reduces the workload of on-site installation and also reduces the workload of handling, transferring, and transporting the photovoltaic energy storage cabinet.

[0035] In addition, by setting a radiator on the cabinet door corresponding to the electrical module, the heat generated by the electrical module during operation can be dissipated outside the cabinet in a timely manner to ensure that the electrical module is in a suitable temperature environment, so as to ensure the normal operation of the electrical module. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the structure of the photovoltaic energy storage cabinet in one direction in this embodiment.

[0037] Figure 2 FIG. 2 is a schematic diagram of the structure of the photovoltaic energy storage cabinet in another direction in this embodiment.

[0038] The following are the descriptions of the reference numerals:

[0039] 1. Cabinet; 11. Base; 111. Bottom longitudinal beam; 112. Bottom cross beam; 113. Forklift hole; 12. Column; 13. Bottom plate; 131. Through hole; 132. Through hole; 14. Partition; 21. Door; 31. PV inverter; 32. DC circuit breaker; 33. Surge protector; 34. AC circuit breaker; 35. Busbar; 41. Battery pack; 5. Radiator; 6. Heat dissipation window; 7. Mounting bracket; 81. First grounding piece; 82. Second grounding piece; 9. Lifting ring. DETAILED DESCRIPTION

[0040] Typical embodiments that embody 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 is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative in nature and not to limit the present invention.

[0041] In the description of this application, it should be understood that in the embodiments shown in the drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions will also change accordingly.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0043] The specific embodiments of the photovoltaic energy storage cabinet of the present application are described in detail below with reference to the accompanying drawings.

[0044] Figure 1 This is a schematic diagram of the structure of the photovoltaic energy storage cabinet in one direction in this embodiment. Figure 2 This is a schematic diagram of the structure of the photovoltaic energy storage cabinet in this embodiment in another direction.

[0045] refer to Figure 1 and Figure 2 The photovoltaic energy storage cabinet includes a cabinet body 1, a cabinet door, an electrical module, an energy storage battery pack and a radiator 5. One lateral side of the cabinet body 1 is open and the interior is hollow. The cabinet door is arranged at the open end of the cabinet body 1 and is movably connected to the cabinet body 1 for opening and closing the opening of the cabinet body 1. The cabinet door is provided with an air outlet that communicates with the interior of the cabinet body 1. The energy storage battery pack is arranged in the cabinet body 1 and is used to store electrical energy and supply power. The electrical module is arranged inside the cabinet body 1 and is located on one side of the energy storage battery pack in the longitudinal direction. The electrical module is arranged corresponding to the air outlet. The electrical module is electrically connected to the energy storage battery pack and is used to electrically connect to the external photovoltaic module. The electrical module is used to control the photovoltaic module to charge the energy storage battery pack and to convert the direct current output by the energy storage battery pack into alternating current. The radiator 5 is arranged at the air outlet of the cabinet door and is used to dissipate the heat generated by the electrical module to the outside of the cabinet body 1.

[0046] In this application, the electrical module and energy storage battery pack are integrated into a single cabinet 1, enabling the photovoltaic energy storage cabinet to simultaneously control the photovoltaic components to charge the energy storage battery pack, store electrical energy, and convert the DC power output by the energy storage battery pack into AC power for power supply. Furthermore, because the electrical module and energy storage battery pack are connected within the cabinet 1, on-site installation / disassembly requires only connecting / disconnecting the input end of the photovoltaic energy storage cabinet's electrical module to / from the external photovoltaic components, and connecting / disconnecting the output end of the electrical module to / from the electrical devices. This eliminates the need to consider the connection between the electrical module and the energy storage battery pack, reducing the workload of on-site installation and also reducing the workload of handling, transferring, and transporting the photovoltaic energy storage cabinet.

[0047] In addition, by setting a radiator 5 on the cabinet door corresponding to the electrical module, the heat generated by the electrical module during operation can be dissipated to the outside of the cabinet 1 in a timely manner to ensure that the electrical module is in a suitable temperature environment, so as to ensure the normal operation of the electrical module.

[0048] The photovoltaic module mentioned above refers to a device that converts solar energy into electrical energy and includes at least one photovoltaic panel. Specifically, photovoltaic panels convert light energy into electrical energy through the photoelectric effect, where sunlight strikes the panel, stimulating electron flow and generating an electric current.

[0049] refer to Figure 1 and Figure 2 The cabinet 1 is in the shape of a rectangular parallelepiped, and has three directions: length, width, and height. The horizontal direction mentioned above refers to the width direction of the cabinet 1, and the vertical direction refers to the length direction of the cabinet 1.

[0050] One lateral side of the cabinet body 1 is open and the interior is hollow, forming a receiving cavity.

[0051] In this embodiment, the cabinet 1 includes a base 11 and a plurality of columns 12 .

[0052] The base 11 is used to support the entire cabinet 1 and is used to be connected and fixed to an external support surface. Specifically, it is connected and fixed to the external support surface by fasteners to facilitate quick installation and removal. The external support surface here can be the ground, the deck of a ship, or any other flat surface.

[0053] The base 11 includes two bottom longitudinal beams 111 and two bottom transverse beams 112. The two bottom longitudinal beams 111 are spaced apart in the transverse direction and extend in the longitudinal direction. The two bottom transverse beams 112 are spaced apart in the longitudinal direction and extend in the transverse direction. The two bottom longitudinal beams 111 and the two bottom transverse beams 112 are connected end to end to form a rectangular frame structure.

[0054] In this embodiment, the bottom longitudinal beam 111 may be a channel steel, a square tube steel, or an I-beam, etc. The bottom transverse beam 112 may be a channel steel, a square tube steel, or an I-beam, etc.

[0055] A plurality of columns 12 are erected on the base 11 at intervals along the circumferential direction. For example, the number of columns 12 can be six, and three columns 12 are provided at intervals along the longitudinal direction at each of the lateral ends of the base 11. Among them, among the three columns 12 located at the same lateral end of the base 11, two columns 12 are located at the top of the longitudinal ends of the base 11, and the remaining column 12 is located in the middle of the base 11 in the longitudinal direction. It should be noted that the middle of the base 11 in the longitudinal direction here does not specifically refer to the exact center position of the base 11 in the longitudinal direction, but refers to an area within a certain length range including the exact center position of the base 11 in the longitudinal direction, excluding the two end portions of the base 11 in the longitudinal direction.

[0056] For example, the number of the columns 12 can also be four. In this case, two columns 12 are respectively provided at the lateral ends of the base 11. The two columns 12 located at the same lateral end of the base 11 are arranged at the top of the longitudinal ends of the base 11.

[0057] Exemplarily, the number of the columns 12 can also be five. In this case, two columns 12 are provided at one lateral end of the base 11, and three columns 12 are provided at the other lateral end. The specific distribution form is described above.

[0058] Exemplarily, the number of columns 12 can also be seven or more. In this case, seven or more columns 12 are distributed on the base 11 at intervals along the circumference. However, it should be noted that the two lateral ends of the base 11 are the first end and the second end respectively, and the first end of the base 11 is located on the opening side of the cabinet 1. Among them, two or three columns 12 are set at the first end of the base 11, and reference is made to the above for the distribution form of the columns 12. Among all the columns 12 located on the second end of the base 11, two of the columns 12 correspond one-to-one to the two columns 12 located on the first end of the base 11, or three of the columns 12 correspond one-to-one to the three columns 12 located on the first end of the base 11, and the straight line where the corresponding two columns 12 are located extends horizontally, and the remaining columns 12 can be arbitrarily distributed at the longitudinal ends or the second end of the base 11.

[0059] In this embodiment, the column 12 can be channel steel or square tube steel.

[0060] The cabinet 1 further includes a bottom plate 13, which is disposed on the top of the base 11. The bottom plate 13 extends horizontally.

[0061] In this embodiment, the bottom plate 13 is provided with a through hole 131, which can communicate with the interior of the cabinet 1 for passing cables. In addition, the through hole 131 can also serve as a drainage channel to effectively drain the water in the cabinet 1 to the outside of the cabinet 1.

[0062] The bottom plate 13 is also provided with a through hole 132, which is spaced apart from the through hole 131. The through hole 132 can communicate with the interior of the cabinet 1 for air intake in the entire cabinet 1, and can also serve as a drainage channel to effectively discharge the water in the cabinet 1 to the outside of the cabinet 1.

[0063] There are multiple through holes 132 , which are distributed at intervals along the circumferential direction around the through hole 131 to improve air intake and drainage effects.

[0064] The cabinet 1 further comprises a top frame connected to the tops of the plurality of columns 12. The structure of the top frame may be the same as that of the bottom frame.

[0065] The cabinet body 1 also includes side panels, two end panels and a top panel. The side panels extend longitudinally, and the two end panels are arranged at the longitudinal ends of the side panels. The end panels are vertically connected to the side panels, and the top panel is connected to the tops of the side panels and the two end panels. The structure formed by the side panels, the two end panels and the top panel covers and is fixed to the periphery of the structure formed by the plurality of columns 12. The side panels are located on the side of the base 11 that is laterally away from the open end of the cabinet body 1, the two end panels are located on both longitudinal sides of the base 11, and the top panel is located on the top of the top frame. The side panels, the two end panels and the top panel work together to provide dustproof and waterproof functions.

[0066] In this embodiment, a partition 14 is provided within the cabinet 1. This partition 14 extends transversely and serves to separate the interior of the cabinet 1 longitudinally into an electrical chamber and a battery chamber. Furthermore, the partition 14 prevents heat exchange between the electrical and battery chambers to a certain extent. Specifically, the partition 14's transverse ends are fixedly connected between the two central columns 12. In this case, the through-holes 131 and 132 on the bottom plate 13 are both provided to correspond to the electrical chambers.

[0067] There is a gap between the partition 14 and the bottom surface of the cabinet 1 for allowing cables to pass through to facilitate the routing of cables inside the cabinet 1. In addition, the wind entering the electrical cavity through the through hole 132 can also enter the battery cavity through the gap between the partition 14 and the bottom surface of the cabinet 1.

[0068] refer to Figure 1 and Figure 2 The cabinet door is arranged at the opening end of the cabinet body 1 and is movably connected to the cabinet body 1 for opening and closing the opening of the cabinet body 1 to open and close the battery cavity and / or electrical cavity of the cabinet body 1.

[0069] In this embodiment, the cabinet door can be a double-door configuration. That is, the cabinet door includes two door bodies 21, which are longitudinally distributed outside the open end of the cabinet body 1. When both door bodies 21 extend longitudinally, the two door bodies 21 are on the same plane. The distance between the two ends of the two door bodies 21 that are separated from each other is consistent with the distance between the longitudinal outer sides of the two uprights 12 located at the longitudinal ends of the open end of the cabinet body 1. The ends of the two door bodies 21 that are close to each other abut against each other, so as to improve the effect of the two door bodies 21 cooperating to close the opening of the cabinet body 1, thereby improving the waterproof and dustproof effect of the photovoltaic energy storage cabinet.

[0070] One longitudinal end of the two door bodies 21 is rotatably connected to the cabinet body 1. One of the door bodies 21 is provided corresponding to the electrical cavity and is used to open and close the electrical cavity; the other door body 21 is provided corresponding to the battery cavity and is used to open and close the battery cavity.

[0071] For example, when two uprights 12 are provided at the open end of the cabinet 1, the ends of the two doors 21 facing away from each other are rotatably connected to the two uprights 12 at the longitudinal ends in a one-to-one correspondence. In this case, when the two doors 21 are rotated to extend longitudinally, the ends of the two doors 21 that are close to each other abut against each other, thereby improving the sealing effect of the cabinet 1 opening.

[0072] In the case where three columns 12 are provided at the open end of the cabinet body 1, the setting position of the column 12 located in the middle is determined according to the abutment point when the two door bodies 21 are both extended in the longitudinal direction. The two door bodies 21 can be rotatably connected to the two columns 12 located at the end in a one-to-one correspondence. In this case, when the two door bodies 21 are rotated to extend in the longitudinal direction, the ends of the two door bodies 21 that are close to each other abut against the lateral outer sides of the column 12 located in the middle to limit the rotation range of the door bodies 21. Alternatively, the two door bodies 21 can also be rotatably connected to the column 12 located in the middle. In this case, when the two door bodies 21 are rotated to extend in the longitudinal direction, the ends of the two door bodies 21 that are away from each other abut against the lateral outer sides of the two columns 12 located at the two longitudinal ends to limit the rotation range of the door bodies 21. Alternatively, the two door bodies 21 are respectively the first door body 21 and the second door body 21, wherein the end of the first door body 21 facing away from the second door body 21 is rotatably connected to the column 12 located at the longitudinal end, and when the first door body 21 is rotated to extend longitudinally, it can abut against the lateral outer side of the column 12 located in the middle to limit its continued rotation; the end of the second door body 21 close to the first door body 21 is rotatably connected to the column 12 located in the middle, and when the second door body 21 is rotated to extend longitudinally, it can abut against the lateral outer side of the column 12 located at the longitudinal end to limit its continued rotation.

[0073] In other embodiments, the cabinet door may be a single door, enabling simultaneous opening and closing of the electrical and battery compartments. In this case, one end of the cabinet door is rotatably connected to a column 12 located at a longitudinal end, and the cabinet door can be rotated until its other end abuts against the lateral outer side of another column 12 located at the longitudinal end, thereby restricting further rotation.

[0074] In this embodiment, an air outlet is provided on the cabinet door. When the cabinet door is closed to the open end of the cabinet body 1, the air outlet can communicate with the interior of the cabinet body 1 and is used to dissipate heat inside the cabinet body 1 to the outside of the cabinet body 1. Specifically, the air outlet is provided on the door body 21 corresponding to the electrical cavity. The air outlet can communicate with the interior of the electrical cavity and can dissipate heat inside the electrical cavity to the outside to ensure a suitable temperature inside the electrical cavity.

[0075] The cabinet door is provided with a vent, which can communicate with the interior of the cabinet 1 when the cabinet door is closed to the open end of the cabinet body 1, and is used to dissipate the heat inside the cabinet 1 to the outside of the cabinet 1. Specifically, the vent is provided on the door body 21 corresponding to the battery cavity, and the air outlet can communicate with the interior of the battery cavity, thereby dissipating the heat inside the battery cavity to the outside to ensure the temperature inside the battery cavity is appropriate.

[0076] In this embodiment, the energy storage battery pack is used to store electrical energy and provide power. The energy storage battery pack is arranged in the cabinet 1. Specifically, the energy storage battery pack is arranged in the battery cavity.

[0077] The energy storage battery group includes a plurality of battery packs 41, and the plurality of battery packs 41 are distributed in the cabinet 1 along the vertical intervals. Specifically, the photovoltaic energy storage cabinet includes a mounting frame 7, and a plurality of accommodating spaces are formed inside the mounting frame 7, and the plurality of accommodating spaces are distributed vertically, and each accommodating space is used to accommodate a battery pack 41. The battery pack 41 is detachably connected to the mounting frame 7 to prevent the battery pack 41 from falling off the mounting frame 7. One side of the mounting frame 7 is open. The mounting frame 7 is installed in the battery cavity with its opening facing the opening of the cabinet 1, so as to facilitate the removal of the battery pack 41 from the mounting frame 7 for maintenance and the like, or to facilitate the installation of the battery pack 41 on the mounting frame 7. The outer periphery of the mounting frame 7 is fixed to at least two adjacent columns 12, so that the columns 12 bear a portion of the force of the mounting frame 7 that accommodates the plurality of battery packs 41.

[0078] The battery pack 41 at the bottom layer is spaced apart from the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the battery pack 41 .

[0079] In this embodiment, the electric energy of a single battery pack 41 is 5 KWh, and it has a relatively small heat generation.

[0080] In this embodiment, the electrical module is located within the cabinet 1, and the electrical module is positioned corresponding to the air outlet. Specifically, the electrical module is located within the electrical cavity. In this case, the air outlet facilitates the dissipation of heat generated by the electrical module during operation outside the cabinet 1, ensuring that the electrical module is maintained at a suitable temperature environment to ensure normal operation of the electrical module. In this case, the partition 14 also serves to prevent the heat generated within the electrical cavity by the photovoltaic inverter 31 during operation from affecting the safety of the energy storage battery pack within the battery cavity.

[0081] The electrical module is spaced apart from the bottom surface of the cabinet 1 in the vertical direction to prevent water from entering the cabinet 1 and damaging the electrical module. At this time, the through hole 131 and the through hole 132 on the bottom plate 13 are both located below the electrical module.

[0082] The electrical module is electrically connected to the energy storage battery pack, and the electrical module is electrically connected to the external photovoltaic module, and is used to control the photovoltaic module to charge the energy storage battery pack and to convert the direct current output by the energy storage battery pack into alternating current.

[0083] In this embodiment, the electrical module includes a photovoltaic inverter 31, which is connected to the inside of the cabinet 1. A gap is formed between the photovoltaic inverter 31 and the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the photovoltaic inverter 31. Specifically, the photovoltaic inverter 31 is connected and fixed to at least two adjacent columns 12. That is, the columns 12 in this embodiment serve as the main load-bearing members of the cabinet 1, used to install and fix the photovoltaic inverter 31.

[0084] The photovoltaic inverter 31 is electrically connected to the energy storage battery pack. It controls the photovoltaic modules to charge the energy storage battery pack and converts the DC power output from the energy storage battery pack into AC power. In this embodiment, the photovoltaic inverter 31 includes a control module and an inverter module, each electrically connected to the energy storage battery pack. The energy storage battery pack has an input and an output.

[0085] Specifically, the input end of the control module is electrically connected to the photovoltaic component, and the output end of the control module is electrically connected to the input end of the energy storage battery pack, so that the photovoltaic component can charge the energy storage battery pack. In this embodiment, the input end of the control module is electrically connected to the external photovoltaic component through a cable to receive photovoltaic current. The output end of the control module is electrically connected to the energy storage battery pack through a cable to transmit current to the energy storage battery pack to charge the energy storage battery pack. Among them, the cable connected to the input end of the control module can pass through the electrical cavity through the through hole 131 and be electrically connected to the photovoltaic component, and the cable connected to the output end of the control module can pass through the gap between the partition 14 and the bottom plate 13 from the electrical cavity into the battery cavity and be electrically connected to the energy storage battery pack, thereby optimizing the cable layout inside the photovoltaic energy storage cabinet.

[0086] The input end of the inverter module is electrically connected to the output end of the energy storage battery pack, and the output end of the inverter module is electrically connected to the electrical device to provide power to the electrical device. In this embodiment, the input end of the inverter module is electrically connected to the output end of the energy storage battery pack via a cable, and the output end of the inverter module is electrically connected to the electrical device via a cable. The cable connected to the input end of the inverter module can pass through the gap between the partition 14 and the bottom plate 13 and enter the battery cavity from the electrical cavity to electrically connect to the energy storage battery pack; the cable connected to the output end of the inverter module can pass through the electrical cavity through the through hole 131 to electrically connect to the electrical device, thereby optimizing the cable layout inside the photovoltaic energy storage cabinet.

[0087] In this embodiment, the control module may be a solar controller, and the inverter module may be a photovoltaic inverter.

[0088] The electrical module also includes a DC circuit breaker 32, located on the side of the partition 14 facing the electrical cavity. A gap exists between the DC circuit breaker 32 and the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the DC circuit breaker 32. The DC circuit breaker 32 is electrically connected to the input terminal of the control module, effectively ensuring that the external photovoltaic modules safely transmit photovoltaic current to the photovoltaic inverter 31.

[0089] The electrical module also includes a surge protector 33, which is located on the side of the partition 14 facing the electrical cavity. A gap exists between the surge protector 33 and the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the surge protector 33. The surge protector 33 is electrically connected to the input of the control module and is connected in parallel with the DC circuit breaker 32. The surge protector 33 can protect the photovoltaic inverter 31 from damage caused by surge voltage or surge current during thunderstorms. It can effectively ensure that the photovoltaic components can safely transmit photovoltaic current to the photovoltaic inverter 31, thereby preventing damage to the photovoltaic inverter 31 due to lightning strikes.

[0090] The electrical module also includes an AC circuit breaker 34, located on the side of the partition 14 facing the electrical cavity. A gap exists between the AC circuit breaker 34 and the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the AC circuit breaker 34. The AC circuit breaker 34 is electrically connected to the output of the inverter module to ensure the safety of the AC circuit output powering the electrical devices.

[0091] The DC circuit breaker 32 , the surge protector 33 and the AC circuit breaker 34 are distributed at intervals in the horizontal direction at the lower part of the partition 14 to facilitate wiring and have an aesthetically pleasing arrangement, thereby optimizing the layout of the electrical module.

[0092] The electrical module also includes a busbar 35, which is arranged on the inner side of the cabinet 1. The busbar 35 is spaced from the bottom surface of the cabinet 1 to prevent water from entering the cabinet 1 and damaging the busbar 35. Specifically, the busbar 35 is arranged on the inner side of the side panel and is located below the photovoltaic inverter 31. The busbar 35 is electrically connected to the input end of the inverter module, and the busbar 35 is also electrically connected to the output end of the control module. In this embodiment, the busbar 35 is electrically connected to each battery pack 41. Specifically, the output end of each battery pack 41 is electrically connected to the busbar 35, and the busbar 35 is used to converge the output currents of multiple battery packs 41, and finally form a current to be transmitted to the inverter module. In this way, the input end of the inverter module only needs to be connected to one cable to achieve electrical connection with each battery pack 41, which is convenient for reducing the number of cables and facilitating wiring. The input end of each battery pack 41 is electrically connected to the busbar 35, so that the current delivered by the control module to the battery pack 41 can be transferred through the busbar 35 to be diverted and delivered to each battery pack 41 to charge each battery pack 41.

[0093] Among them, the cables connected between the energy storage battery group and the photovoltaic inverter 31, and between each battery pack 41 and the busbar 35 can be routed through the gap between the partition 14 and the bottom plate 13, which is convenient and simple to operate and can optimize the cable layout inside the photovoltaic energy storage cabinet.

[0094] The radiator 5 is provided at the air outlet on the cabinet door, which can promptly dissipate the heat generated by the electrical module when it is working to the outside of the cabinet 1 to ensure that the electrical module is in a suitable temperature environment, so as to ensure the normal operation of the electrical module.

[0095] In this embodiment, the radiator 5 is a fan.

[0096] The photovoltaic energy storage cabinet includes a heat dissipation window 6, which is arranged at the ventilation opening.

[0097] The heat dissipation window 6 comprises a window frame and multiple window blades. Specifically, the window frame is positioned at the vent and fixed to the cabinet door. The window frame extends through both ends, perpendicular to the cabinet door, and communicates with the vent. Multiple window blades are vertically spaced within the window frame. Adjacent window blades and the window frame together form a heat dissipation vent, which allows heat generated by the energy storage battery pack to dissipate outside the cabinet 1.

[0098] The window blades can be fixedly connected to the window frame and tilted outward from top to bottom, or extended horizontally to achieve waterproof and dustproof effects.

[0099] In other embodiments, each window blade can also be rotatably connected to the window frame, so that the window blade can rotate relative to the window frame to adjust its own inclination angle to ensure the waterproof and dustproof effect of the heat dissipation window 6. Specifically, the window blade can rotate between vertical extension and horizontal extension, that is, its rotation angle range is 0° to 90°. The window blade has a first end and a second end. When the window blade extends in the horizontal direction, the first end is located on the outside of the second end. In the process of rotating from vertical extension to horizontal extension, the first end of each window blade is lifted up and the second end is pressed down to expose and expand the heat dissipation opening between two adjacent window blades. If the heat dissipation opening between two adjacent window blades needs to be reduced, the window blade can be rotated in the direction opposite to the above-mentioned direction.

[0100] In this embodiment, the outer periphery of the cabinet body 1 is enclosed by side panels, two end panels, and a top panel, and the opening of the cabinet body 1 is enclosed by a cabinet door, which can prevent dust, rainwater, and the like from entering the interior of the photovoltaic energy storage cabinet to a certain extent. In addition, a radiator 5 is provided at the air outlet on the cabinet body 1, which can also prevent dust, rainwater, and the like from entering the interior of the photovoltaic energy storage cabinet to a certain extent. A heat dissipation window 6 is provided at the vent on the cabinet door, wherein the window blades of the heat dissipation window 6 are designed to tilt outward from top to bottom or extend horizontally, which can also prevent dust, rainwater, and the like from entering the interior of the photovoltaic energy storage cabinet to a certain extent. In other words, the cabinet body 1, cabinet door, radiator 5, and heat dissipation window 6 work together to ensure that the photovoltaic energy storage cabinet has an IP54 waterproof and dustproof rating.

[0101] The photovoltaic energy storage cabinet includes a first grounding member 81, which is located on the bottom surface of the cabinet body 1 and is connected to the energy storage battery pack. This grounding member 81 is used to ground the energy storage battery pack, effectively ensuring its safe operation. Specifically, the first grounding member 81 is located on the bottom plate 13 and corresponds to the electrical cavity.

[0102] The photovoltaic energy storage cabinet also includes a second grounding member 82, which is disposed on the outer side of the cabinet body 1. The first grounding member 81 is used to ground the cabinet body 1 to ensure the grounding safety of the cabinet body 1. Specifically, the first grounding member 81 is disposed on the outer side of the bottom beam 112 near the electrical cavity.

[0103] refer to Figure 1 and Figure 2 In this embodiment, a forklift hole 113 is provided at the bottom of the cabinet body 1 for use with a forklift to facilitate the transport and transfer of the photovoltaic energy storage cabinet. Specifically, the forklift hole 113 is provided on the bottom crossbeam 112, and the axis of the forklift hole 113 extends longitudinally. This prevents uneven loading when lifting the photovoltaic energy storage cabinet.

[0104] The top of the cabinet 1 is provided with a plurality of lifting rings 9, which are spaced apart along the circumference of the top of the cabinet 1. The lifting rings 9 are provided with lifting holes for cooperating with lifting tools to realize the lifting, transportation and installation of the photovoltaic energy storage cabinet.

[0105] In this embodiment, the center of the structure enclosed by the multiple lifting rings 9 deviates from the center of the cabinet body 1 in the longitudinal direction toward the energy storage battery pack. In this way, when the photovoltaic energy storage cabinet is hoisted by the lifting device, the force center of the photovoltaic energy storage cabinet is biased toward the side of the energy storage battery pack with a heavier weight, so that the force center of the photovoltaic energy storage cabinet is closer to the center of gravity of the photovoltaic energy storage cabinet in the longitudinal direction, preventing the photovoltaic energy storage cabinet from being overloaded due to the deviation of the center of gravity during lifting, thereby improving the hoisting stability of the photovoltaic energy storage cabinet and ensuring the hoisting safety of the photovoltaic energy storage cabinet.

[0106] For example, the intersection of the centerline of the cabinet 1 and its top plane is point A. For example, if there are four lifting rings 9, these four lifting rings 9 are arranged in an array across the top of the cabinet 1. The intersection of the two diagonals of the rectangular structure formed by the four lifting rings 9 is point B, which is also the center point of the rectangular structure formed by the four lifting rings 9. Point B is located longitudinally on the side of point A that is closer to the energy storage battery pack.

[0107] It can be seen from the above technical solution that the present invention has at least the following advantages and positive effects:

[0108] In this application, the electrical module and energy storage battery pack are integrated into a single cabinet, allowing the photovoltaic energy storage cabinet to simultaneously control the photovoltaic components to charge the energy storage battery pack, store electrical energy, and convert the DC power output by the energy storage battery pack into AC power for power supply. Furthermore, because the electrical module and energy storage battery pack are connected within the cabinet, on-site installation / disassembly requires only connecting / disconnecting the input end of the photovoltaic energy storage cabinet's electrical module to / from the external photovoltaic components, and connecting / disconnecting the output end of the electrical module to / from the electrical devices, without having to consider the connection relationship between the electrical module and the energy storage battery pack. This reduces the workload of on-site installation and also reduces the workload of handling, transferring, and transporting the photovoltaic energy storage cabinet.

[0109] In addition, by setting a radiator on the cabinet door corresponding to the electrical module, the heat generated by the electrical module during operation can be dissipated outside the cabinet in a timely manner to ensure that the electrical module is in a suitable temperature environment, so as to ensure the normal operation of the electrical module.

[0110] Furthermore, the photovoltaic energy storage cabinet also has a current-converging function. That is, by providing a busbar between the input of the inverter module and the output of each battery pack in the battery group, the current output by each battery pack is converged, ultimately converging into a single current path for transmission to the inverter module. Furthermore, the input of each battery pack is also electrically connected to the output of the control module via the busbar, allowing the current transmitted from the control module to the battery pack to be transferred via the busbar, thereby splitting the single current into multiple current paths, which are then transmitted to each battery pack to charge them.

[0111] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A photovoltaic energy storage cabinet, characterized in that: include: The cabinet body has an open side and a hollow interior; A cabinet door is provided at the open end of the cabinet body and is movably connected to the cabinet body for opening and closing the opening of the cabinet body; the cabinet door is provided with an air outlet communicating with the interior of the cabinet body; An energy storage battery pack is arranged in the cabinet, and is used for storing electrical energy and supplying power; an electrical module disposed inside the cabinet and on one side of the energy storage battery module, the electrical module being disposed corresponding to the air outlet; the electrical module being electrically connected to the energy storage battery pack and being configured to be electrically connected to an external photovoltaic module; the electrical module being configured to control the photovoltaic module to charge the energy storage battery pack and to convert the direct current outputted by the energy storage battery pack into alternating current; A radiator is provided at the air outlet of the cabinet door and is used to dissipate the heat generated by the electrical module to the outside of the cabinet.

2. The photovoltaic energy storage cabinet according to claim 1, characterized in that: The cabinet door is provided with a vent corresponding to the energy storage battery pack, for dissipating heat generated by the energy storage battery pack to the outside of the cabinet; The photovoltaic energy storage cabinet includes a heat dissipation window arranged at the vent, and the heat dissipation window includes a window frame and a plurality of window blades. The window frame is fixed on the cabinet door, and the window frame is passed through at both ends perpendicular to the cabinet door and communicates with the vent; the plurality of window blades are connected to the window frame at vertical intervals, and two adjacent window blades and the window frame enclose a heat dissipation vent.

3. The photovoltaic energy storage cabinet according to claim 2, characterized in that: Each of the window blades is inclined outward from top to bottom, or each of the window blades extends in a horizontal direction; or, Each window blade is rotatably connected to the window frame, and the window blade can rotate relative to the window frame to adjust its own inclination angle.

4. The photovoltaic energy storage cabinet according to claim 1, characterized in that: A partition is provided in the cabinet, the partition extending in the transverse direction, and is used to separate the interior of the cabinet in the longitudinal direction to form an electrical cavity and a battery cavity, the electrical cavity is used to accommodate the electrical module, and the battery cavity is used to accommodate the energy storage battery pack; There is a gap between the partition plate and the bottom surface of the cabinet body for cables to pass through.

5. The photovoltaic energy storage cabinet according to claim 4, characterized in that: The electrical module includes a photovoltaic inverter, which is connected to the inner side of the cabinet, and is spaced apart from the bottom surface of the cabinet. The photovoltaic inverter includes a control module and an inverter module. The input end of the control module is electrically connected to the photovoltaic component, and the output end of the control module is electrically connected to the input end of the energy storage battery pack. The control module is used to control the photovoltaic component to charge the energy storage battery pack. The input end of the inverter module is electrically connected to the output end of the energy storage battery pack, and the output end of the inverter module is electrically connected to the electrical device. The inverter module is used to convert the direct current output of the energy storage battery pack into alternating current. The electrical module further includes a DC circuit breaker, which is arranged on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the DC circuit breaker is electrically connected to the input end of the control module.

6. The photovoltaic energy storage cabinet according to claim 5, characterized in that: The electrical module further includes a surge protector, which is disposed on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the surge protector is electrically connected to an input end of the control module; The electrical module further includes an AC circuit breaker, which is disposed on a side of the partition facing the electrical cavity, and is spaced apart from the bottom surface of the cabinet; the AC circuit breaker is electrically connected to the output end of the inverter module; The DC circuit breaker, the surge protector and the AC circuit breaker are distributed at intervals in the transverse direction at the lower portion of the partition.

7. The photovoltaic energy storage cabinet according to claim 4, characterized in that: The energy storage battery pack includes a plurality of battery packs, which are vertically spaced apart in the cabinet; the battery packs located at the bottom layer are spaced apart from the bottom surface of the cabinet; The electrical module also includes a busbar, which is arranged on the inner side of the cabinet and has a gap with the bottom surface of the cabinet; the busbar is electrically connected to each of the battery packs and is used to converge the output current of multiple battery packs.

8. The photovoltaic energy storage cabinet according to claim 1, characterized in that: The photovoltaic energy storage cabinet includes a first grounding member, which is provided on the bottom surface of the cabinet body and connected to the energy storage battery pack; The photovoltaic energy storage cabinet further includes a second grounding member, which is arranged on the outer side of the cabinet body.

9. The photovoltaic energy storage cabinet according to claim 1, characterized in that: The cabinet includes a base and a plurality of columns, wherein the plurality of columns are erected on the base at intervals along the circumferential direction; the photovoltaic inverter of the electrical module is connected and fixed to at least two adjacent columns; The cabinet further comprises a bottom plate, which is arranged on the top of the base and has a through hole communicating with the interior of the cabinet for allowing cables to pass through; the through hole is located below the electrical module; The bottom plate is further provided with a through hole communicating with the interior of the cabinet; the through hole is spaced apart from the through hole and is located below the electrical module.

10. The photovoltaic energy storage cabinet according to claim 1, characterized in that: The lower part of the cabinet is provided with a forklift hole; The top of the cabinet is provided with a plurality of lifting rings, which are distributed at intervals along the circumference of the top of the cabinet; the center of the structure enclosed by the plurality of lifting rings deviates from the center of the cabinet in the longitudinal direction toward the direction close to the energy storage battery pack; the lifting rings are provided with lifting holes.

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