An off-grid photovoltaic energy storage inverter system

Abstract

The present invention relates to the field of photovoltaic energy storage technology, and specifically to an off-grid photovoltaic energy storage inverter system, comprising a base and a photovoltaic assembly, wherein the photovoltaic assembly comprises an inverter unit, two movable plates, a plurality of first cylinders, a plurality of second cylinders, two support blocks, two solar photovoltaic panels, a first fixed block, a second fixed block and a connecting unit, wherein the inverter unit is arranged above the base, and the two first cylinders are fixedly connected to the base and are sequentially distributed inside the base, and the solar photovoltaic panels convert solar energy into electrical energy, which is then supplied to the load through the inverter unit. When movement is required, the first fixed block and the second fixed block are separated through the connecting unit, and the two solar photovoltaic panels are rotated and lowered, and at the same time, the first cylinder is started to drive the two movable plates closer together, and the second cylinder is started to drive the support block downward to reduce the overall volume, thereby ensuring the area of ​​the photovoltaic array while being foldable and foldable for easy movement.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic energy storage, and in particular to an off-grid photovoltaic energy storage inverter system. Background Art

[0002] As the most abundant and clean renewable energy, solar energy has unique advantages and huge potential for development and utilization. When there is sunlight during the day, the photovoltaic inverter can be connected to the grid to generate electricity or off-grid to provide electricity to local loads to meet the electricity demand of local loads. The existing photovoltaic energy storage inverter system mainly includes a photovoltaic array, a controller, a battery pack, an inverter and a load. When there is sunlight, the photovoltaic array converts solar energy into electrical energy and inputs it into the DC bus. After being inverted into AC power by the inverter, it supplies power to the load and charges the battery pack at the same time. When there is no sunlight, the battery pack is discharged to the DC bus through the boost circuit and then inverted into AC power by the inverter to supply power to the load. At the same time, the battery pack also supplies power to the AC inverter. However, due to the large fluctuations in the energy generated by the photovoltaic array, the stability of the bus power cannot be guaranteed.

[0003] In the existing technology, the first energy storage battery group and the second energy storage battery group are used as energy storage units. Different control strategies are adopted for the photovoltaic array, battery group and load according to different light intensity periods and different load requirements. Flexible scheduling is achieved to realize the self-control of the photovoltaic energy storage inverter system, improve the power stability of the busbar, enhance the photovoltaic utilization rate and the safety and service life of the energy storage battery group.

[0004] However, in the aforementioned prior art, the photovoltaic energy storage inverter system is provided with a photovoltaic array, a controller, a battery pack, an inverter and a load. At the same time, in order to improve the efficiency of solar charging, the photovoltaic array is usually set to be larger, resulting in the entire photovoltaic energy storage inverter system being large in size and inconvenient to move. Summary of the Invention

[0005] The purpose of the present invention is to provide an off-grid photovoltaic energy storage inverter system, which solves the problem that the photovoltaic energy storage inverter system in the prior art is provided with a photovoltaic array, a controller, a battery pack, an inverter and a load. At the same time, in order to improve the efficiency of solar charging, the photovoltaic array is usually set larger, resulting in the entire photovoltaic energy storage inverter system being large in size and inconvenient to move.

[0006] To achieve the above-mentioned object, the present invention provides an off-grid photovoltaic energy storage inverter system, comprising a base and a photovoltaic module;

[0007] The photovoltaic assembly includes an inverter unit, two movable plates, multiple first cylinders, multiple second cylinders, two support blocks, two solar photovoltaic panels, a first fixed block, a second fixed block and a connecting unit. The inverter unit is arranged above the base. The two first cylinders are fixedly connected to the base and are sequentially distributed inside the base. The output ends of the two first cylinders are respectively fixedly connected to the corresponding movable plates. The two movable plates are symmetrically distributed on both sides of the base. Multiple second cylinders are respectively arranged inside the corresponding movable plates. The output ends of multiple second cylinders are respectively fixedly connected to the corresponding support blocks. The two solar photovoltaic panels are respectively rotatably connected to the corresponding support blocks and are located on one side of the support block. The first fixed block and the second fixed block are respectively fixedly connected to the corresponding solar photovoltaic panels. The first fixed block and the second fixed block are connected through the connecting unit.

[0008] The inverter unit includes a controller, a battery pack and an inverter. The controller, the battery pack and the inverter are all fixedly connected to the base and are sequentially distributed above the base.

[0009] In which, the connecting unit includes a first clamping block, a first spring, two sliding rods and a first pulling block, the first fixed block has a groove, the second fixed block has a first limiting groove, the two ends of the first spring are respectively movably connected to one end of the first clamping block and the inner side wall of the groove, the first clamping block and the first limiting groove are adapted to each other, the two sliding rods are both slidably connected to the first fixed block, one end of the two sliding rods passes through the first fixed block and is fixedly connected to one end of the first clamping block, the two sliding rods are symmetrically distributed on both sides of the spring, and the first pulling block is fixedly connected to the two sliding rods and is located at the other end of the two sliding rods.

[0010] In which, the connecting unit also includes a second clamping block, a connecting rod, a second spring and a second pulling block, the first clamping block has a second limiting groove, the second clamping block and the second limiting groove are adapted to each other, one end of the connecting rod passes through the second fixed block and is fixedly connected to the second clamping block, the two ends of the second spring are respectively movably connected to the inner top wall of the first limiting groove and the top of the second clamping block, the second spring is sleeved on the outside of the connecting rod, and the other end of the connecting rod is fixedly connected to the second pulling block.

[0011] The off-grid photovoltaic energy storage inverter system further includes a protection component, which is arranged on the photovoltaic component.

[0012] In which, the protection component includes two cover plates, two magnets, multiple hinges and two handles. The two cover plates are respectively connected to the corresponding support blocks through the corresponding hinges. The two handles are respectively fixedly connected to the corresponding cover plates and are located above the cover plates. The two magnets are respectively fixedly connected to the corresponding cover plates and are located at one end of the cover plates.

[0013] In which, the protection component also includes multiple first baffles and multiple second baffles, the multiple first baffles are respectively fixedly connected to the corresponding support blocks and are located on one side of the corresponding support blocks, and the multiple second baffles are respectively fixedly connected to the corresponding movable plates and are located on one side of the movable plates.

[0014] The present invention provides an off-grid photovoltaic energy storage inverter system, wherein the base supports the inverter unit, the support block supports the solar photovoltaic panel, the connecting unit connects the first fixed block and the second fixed block, the solar photovoltaic panel converts solar energy into electrical energy, and then supplies power to the load through the inverter unit. When movement is required, the first fixed block and the second fixed block are separated by the connecting unit, and the two solar photovoltaic panels are rotated and lowered. At the same time, the first cylinder is started to drive the two movable panels closer together, and the second cylinder is started to drive the support block downward to reduce the overall volume. Through the above-mentioned structural arrangement, the photovoltaic array area is ensured while the system can be folded and stored for easy movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0016] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0017] Figure 2 It is a cross-sectional view of the entire first embodiment of the present invention.

[0018] Figure 3 The present invention Figure 2 AA line section view.

[0019] Figure 4 The present invention Figure 2 A magnified view of the local structure at point B.

[0020] Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0021] Figure 6 It is a cross-sectional view of the entire second embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0023] Figure 8 It is a cross-sectional view of the entire second embodiment of the present invention.

[0024] Figure 9 The present invention Figure 8 CC line cross-sectional view.

[0025] 101-base, 102-movable plate, 103-first cylinder, 104-second cylinder, 105-support block, 106-solar photovoltaic panel, 107-first fixed block, 108-second fixed block, 109-controller, 110-battery pack, 111-inverter, 112-first clamping block, 113-first spring, 114-sliding rod, 115-first pulling block, 116-groove, 117-first limiting groove, 118-second clamping block, 119-connecting rod, 120-second spring, 121-second pulling block, 122-second limiting groove, 201-cover, 202-magnet, 203-hinge, 204-handle, 205-first baffle, 206-second baffle, 301-expansion block, 302-bolt, 303-first threaded hole, 304-second threaded hole. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] First embodiment:

[0028] See also Figures 1 to 4 ,in Figure 1 is a schematic diagram of the overall structure of the first embodiment of the present invention, Figure 2 is a cross-sectional view of the entire first embodiment of the present invention, Figure 3 The present invention Figure 2 AA line section view, Figure 4 The present invention Figure 2The present invention provides an off-grid photovoltaic energy storage inverter system, comprising a base 101 and a photovoltaic assembly. The photovoltaic assembly includes an inverter unit, two movable plates 102, a plurality of first cylinders 103, a plurality of second cylinders 104, two support blocks 105, two solar photovoltaic panels 106, a first fixed block 107, a second fixed block 108, and a connecting unit. The inverter unit includes a controller 109, a battery pack 110, and an inverter 111. The connecting unit includes a first clamping block 112, a first spring 113, two sliding rods 114, and a first pull block 115. The first fixed block 107 has a groove 116, and the second fixed block 108 has a first limiting groove 117. The connecting unit also includes a second clamping block 118, a connecting rod 119, a second spring 120, and a second pull block 121.

[0029] According to this specific embodiment, the two solar photovoltaic panels 106 are rotated and lowered, and at the same time, the first cylinder 103 is started to drive the two movable plates 102 closer together, and the second cylinder 104 is started to drive the support block 105 downward to reduce the overall volume.

[0030] In which, the inverter unit is arranged above the base 101, the two first cylinders 103 are fixedly connected to the base 101 and are distributed in sequence inside the base 101, the output ends of the two first cylinders 103 are respectively fixedly connected to the corresponding movable plates 102, and the two movable plates 102 are symmetrically distributed on both sides of the base 101, and multiple second cylinders 104 are respectively arranged inside the corresponding movable plates 102, and the output ends of multiple second cylinders 104 are respectively fixedly connected to the corresponding support blocks 105, the two solar photovoltaic panels 106 are respectively rotatably connected to the corresponding support blocks 105, and are located on one side of the support block 105, the first fixed block 107 and the second fixed block 108 are respectively fixedly connected to the corresponding solar photovoltaic panels 106, and the first fixed block 107 and the second fixed block 108 are connected through the connecting unit. The base 101 supports the inverter unit, the support block 105 supports the solar photovoltaic panel 106, and the connecting unit connects the first fixed block 107 and the second fixed block 108. The solar photovoltaic panel 106 converts solar energy into electrical energy, and then supplies power to the load through the inverter unit. When it needs to be moved, the first fixed block 107 and the second fixed block 108 are separated by the connecting unit, and the two solar photovoltaic panels 106 are rotated and lowered. At the same time, the first cylinder 103 is started to drive the two movable plates 102 closer together, and the second cylinder 104 is started to drive the support block 105 downward to reduce the overall volume. This ensures the area of ​​the photovoltaic array while allowing it to be folded and stored for easy movement.

[0031] Secondly, the controller 109, the battery pack 110, and the inverter 111 are all fixedly connected to the base 101 and are sequentially arranged above the base 101. The controller 109 controls the inverter 111 and the solar photovoltaic panel 106 to convert solar energy into electrical energy when there is sunlight, inputting it into the DC bus. After being inverted into AC power by the inverter 111, it is used to power the load and simultaneously charge the battery pack 110.

[0032] At the same time, the first fixed block 107 has a groove 116, the second fixed block 108 has a first limiting groove 117, the two ends of the first spring 113 are respectively movably connected to one end of the first clamping block 112 and the inner side wall of the groove 116, the first clamping block 112 and the first limiting groove 117 are adapted to each other, the two sliding rods 114 are both slidably connected to the first fixed block 107, one end of the two sliding rods 114 passes through the first fixed block 107 and is fixedly connected to one end of the first clamping block 112, the two sliding rods 114 are symmetrically distributed on both sides of the spring, and the first pulling block 115 is fixedly connected to the two sliding rods 114 and is located at the other end of the two sliding rods 114. First, rotate the solar photovoltaic panel 106 supporting the first fixed block 107 upward 90 degrees, and then rotate the other solar photovoltaic panel 106 so that the second fixed block 108 contacts the inclined surface of the first clamping block 112, pushing the first clamping block 112 back into the groove 116, and the first spring 113 rebounds, driving the first clamping block 112 into the first limiting groove 117. At the same time, by pulling the first pulling block 115, the first clamping block 112 can be driven out of the first limiting groove 117 through the two sliding rods 114, and the separation is completed at the same time.

[0033] In addition, the first clamping block 112 has a second limiting groove 122, and the second clamping block 118 is adapted to the second limiting groove 122. One end of the connecting rod 119 passes through the second fixing block 108 and is fixedly connected to the second clamping block 118. The two ends of the second spring 120 are movably connected to the inner top wall of the first limiting groove 117 and the upper part of the second clamping block 118, respectively. The second spring 120 is sleeved on the outside of the connecting rod 119, and the other end of the connecting rod 119 is fixedly connected to the second pulling block 121. When the first clamping block 112 enters the first limiting groove 117, it pushes the inclined surface of the second clamping block 118. The second spring 120 rebounds, driving the second clamping block 118 upward, so that the second clamping block 118 enters the second limiting groove 122, and at the same time pulls the second pulling block 121, which drives the second clamping block 118 upward through the connecting rod 119. At this time, the first clamping block 112 can be removed.

[0034] When using an off-grid photovoltaic energy storage inverter system of this embodiment, the solar photovoltaic panel 106 converts solar energy into electrical energy, and then supplies power to the load through the inverter unit. When it needs to be moved, the second pulling block 121 is pulled, and the second clamping block 118 is driven to move upward through the connecting rod 119. At this time, by pulling the first pulling block 115, the first clamping block 112 can be driven to disengage from the first limiting groove 117 through the two sliding rods 114 to complete the separation, and the two solar photovoltaic panels 106 are rotated and lowered. At the same time, the first cylinder 103 is started to drive the two movable plates 102 closer together, and the second cylinder 104 is started to drive the support block 105 downward to reduce the overall volume. Through the above-mentioned structural setting, the photovoltaic array area is ensured while being folded and stored for easy movement.

[0035] Second embodiment:

[0036] Based on the first embodiment, please refer to Figure 5 and Figure 6 ,in Figure 5 is a schematic diagram of the overall structure of the second embodiment of the present invention, Figure 6 This is a cross-sectional view of the entirety of the second embodiment of the present invention. The present invention provides an off-grid photovoltaic energy storage inverter system, further comprising a protective assembly comprising two cover plates 201, two magnets 202, a plurality of hinges 203, two handles 204, a plurality of first baffles 205, and a plurality of second baffles 206.

[0037] For this specific embodiment, when the two support blocks 105 are brought close to each other, the two magnets 202 attract each other, thereby completing the fixation and protecting the upper part. Holding the handle 204 can drive the cover plate 201 to rotate. After the two support blocks 105 are brought close to each other, the first baffle 205 is spliced ​​to close the two ends of the support block 105, and at the same time, the second baffle 206 closes the two ends of the movable plate 102.

[0038] The protection component is provided on the photovoltaic component, and protects the inverter unit and the two solar photovoltaic panels 106 inside the photovoltaic component, thereby improving safety during transportation.

[0039] Secondly, the two cover plates 201 are connected to the corresponding support blocks 105 via the corresponding hinges 203. The two handles 204 are fixedly connected to the corresponding cover plates 201 and are located above the cover plates 201. The two magnets 202 are fixedly connected to the corresponding cover plates 201 and are located at one end of the cover plates 201. The cover plates 201 are rotated above the solar photovoltaic panels 106 via the hinges 203. When generating electricity, the cover plates 201 are rotated to the sides and moved away. When the two support blocks 105 are brought together, the two magnets 202 attract each other, thereby completing the fixation and protecting the upper part. Holding the handles 204 can drive the cover plates 201 to rotate.

[0040] At the same time, the first baffles 205 are fixedly connected to the corresponding support blocks 105 and are located on one side of the corresponding support blocks 105. The second baffles 206 are fixedly connected to the corresponding movable plate 102 and are located on one side of the movable plate 102. After the two support blocks 105 are brought together, the first baffles 205 are spliced ​​to seal the two ends of the support blocks 105, and the second baffles 206 seal the two ends of the movable plate 102.

[0041] When using an off-grid photovoltaic energy storage inverter system of this embodiment, the cover plate 201 is rotated to the top of the solar photovoltaic panel 106 through the hinge 203. When the two support blocks 105 are brought close to each other, the two magnets 202 attract each other, thereby completing the fixation and protecting the upper part. Holding the handle 204 can drive the cover plate 201 to rotate. After the two support blocks 105 are brought close to each other, the first baffle 205 is spliced ​​to close the two ends of the support block 105. At the same time, the second baffle 206 closes the two ends of the movable plate 102. Through the above-mentioned structural arrangement, the internal inverter unit and the two solar photovoltaic panels 106 are protected, thereby improving safety during mobile transportation.

[0042] Third embodiment:

[0043] The off-grid photovoltaic energy storage inverter system also includes multiple locking assemblies, which are sequentially arranged on the base 101. The locking assemblies include an expansion block 301 and a bolt 302. The expansion block 301 is fixedly connected to the base 101 and is located on one side of the base 101. The expansion block 301 has a first threaded hole 303, and the movable plate 102 has a second threaded hole 304. The bolt 302 is mutually adapted with the first threaded hole 303 and the second threaded hole 304.

[0044] Based on the second embodiment, please refer to Figures 7 to 9 ,in Figure 7 is a schematic diagram of the overall structure of the second embodiment of the present invention, Figure 8 is a cross-sectional view of the entire second embodiment of the present invention, Figure 9 The present invention Figure 8 The present invention provides an off-grid photovoltaic energy storage inverter system, further comprising a plurality of locking assemblies, the locking assemblies comprising an expansion block 301 and a bolt 302 , the expansion block 301 having a first threaded hole 303 , and the movable plate 102 having a second threaded hole 304 .

[0045] According to this specific embodiment, the expansion block 301 supports the bolt 302 . When the movable plate 102 is folded, the bolt 302 is screwed into the first threaded hole 303 and the second threaded hole 304 in sequence to complete the fixation of the movable plate 102 .

[0046] Among them, a plurality of locking components are sequentially arranged on the base 101. The locking components can fix the moving plate 102 after being brought together to avoid looseness and cheapness, thereby improving the stability of the transportation process.

[0047] Next, the expansion block 301 is fixedly connected to the base 101 and is located on one side of the base 101. The expansion block 301 has a first threaded hole 303, and the movable plate 102 has a second threaded hole 304. The bolts 302 are adapted to fit into both the first threaded hole 303 and the second threaded hole 304. The expansion block 301 supports the bolts 302, which are then screwed into the first threaded hole 303 and the second threaded hole 304 in sequence to secure the movable plate 102.

[0048] When using an off-grid photovoltaic energy storage inverter system of this embodiment, the expansion block 301 supports the bolt 302. When the movable plate 102 is folded, the bolt 302 is screwed into the first threaded hole 303 and the second threaded hole 304 in sequence to complete the fixation of the movable plate 102, thereby avoiding loosening and cheapness and improving the stability of the transportation process.

[0049] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. An off-grid photovoltaic energy storage inverter system, comprising a base, characterized in that: It also includes photovoltaic modules; The photovoltaic assembly includes an inverter unit, two movable plates, a plurality of first cylinders, a plurality of second cylinders, two support blocks, two solar photovoltaic panels, a first fixed block, a second fixed block and a connecting unit, wherein the inverter unit is arranged above the base, the two first cylinders are fixedly connected to the base and are sequentially distributed inside the base, the output ends of the two first cylinders are respectively fixedly connected to the corresponding movable plates, the two movable plates are symmetrically distributed on both sides of the base, the plurality of second cylinders are respectively arranged inside the corresponding movable plates, the output ends of the plurality of second cylinders are respectively fixedly connected to the corresponding support blocks, the two solar photovoltaic panels are respectively rotatably connected to the corresponding support blocks and are located on one side of the support block, the first fixed block and the second fixed block are respectively fixedly connected to the corresponding solar photovoltaic panels, and the first fixed block and the second fixed block are connected by the connecting unit; The inverter unit includes a controller, a battery pack and an inverter, wherein the controller, the battery pack and the inverter are all fixedly connected to the base and are sequentially distributed above the base; The connecting unit includes a first clamping block, a first spring, two sliding rods and a first pulling block, the first fixing block having a groove, the second fixing block having a first limiting groove, two ends of the first spring being movably connected to one end of the first clamping block and the inner side wall of the groove respectively, the first clamping block and the first limiting groove being adapted to each other, the two sliding rods being slidably connected to the first fixing block, one end of the two sliding rods passing through the first fixing block and being fixedly connected to one end of the first clamping block, the two sliding rods being symmetrically distributed on both sides of the spring, and the first pulling block being fixedly connected to the two sliding rods and being located at the other end of the two sliding rods; The connecting unit also includes a second clamping block, a connecting rod, a second spring and a second pulling block. The first clamping block has a second limiting groove, the second clamping block and the second limiting groove are adapted to each other, one end of the connecting rod passes through the second fixing block and is fixedly connected to the second clamping block, the two ends of the second spring are respectively movably connected to the inner top wall of the first limiting groove and the upper part of the second clamping block, the second spring is sleeved on the outside of the connecting rod, and the other end of the connecting rod is fixedly connected to the second pulling block.

2. The off-grid photovoltaic energy storage inverter system according to claim 1, characterized in that: The off-grid photovoltaic energy storage inverter system further includes a protection component, which is disposed on the photovoltaic component.

3. The off-grid photovoltaic energy storage inverter system according to claim 2, characterized in that: The protective assembly includes two cover plates, two magnets, multiple hinges and two handles. The two cover plates are respectively connected to the corresponding support blocks through the corresponding hinges. The two handles are respectively fixedly connected to the corresponding cover plates and are located above the cover plates. The two magnets are respectively fixedly connected to the corresponding cover plates and are located at one end of the cover plates.

4. The off-grid photovoltaic energy storage inverter system according to claim 3, characterized in that: The protection assembly also includes multiple first baffles and multiple second baffles. The multiple first baffles are respectively fixedly connected to the corresponding support blocks and are located on one side of the corresponding support blocks. The multiple second baffles are respectively fixedly connected to the corresponding movable plates and are located on one side of the movable plates.

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