CN-224233642-U - Modularized photovoltaic assembly

CN224233642UCN 224233642 UCN224233642 UCN 224233642UCN-224233642-U

Abstract

The utility model relates to the technical field of photovoltaic assemblies, and discloses a modularized photovoltaic assembly, which comprises a plurality of photovoltaic sub-modules distributed in an array, wherein each photovoltaic sub-module comprises a battery packaging unit, the battery packaging unit comprises a plurality of photovoltaic cells which are completely packaged and are completely interconnected, a sub-module frame is used for arranging the battery packaging unit and is provided with an interconnection circuit for being connected with the photovoltaic cells, the sub-module frame comprises a plurality of standardized plug interfaces which are connected with the interconnection circuit, the adjacent two photovoltaic sub-modules are electrically and mechanically connected through the standardized plug interfaces, a micro-optimizer is positioned on one side of the battery packaging unit and is connected with the photovoltaic cells through the interconnection circuit, and the micro-optimizer is suitable for controlling the photovoltaic cells in the battery packaging unit. The utility model can improve the flexibility of local replacement of the photovoltaic module, shorten the fault maintenance time, reduce the operation and maintenance cost and improve the reliability and stability among the photovoltaic sub-modules.

Inventors

YANG JING
LIU DONGXUE
CHANG YONG
SUN TIANGE
GONG YONGSHUAI
DONG YIXIN
LIU JIACEN

Assignees

中国长江三峡集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250606

Claims (10)

1. A modularized photovoltaic module is characterized in that, The modularized photovoltaic assembly comprises a plurality of photovoltaic sub-modules distributed in an array; Wherein each of the photovoltaic sub-modules comprises: A battery packaging unit; the battery packaging unit comprises a plurality of photovoltaic cells which are completely packaged and are completely interconnected; the photovoltaic module comprises a battery packaging unit, a submodule frame, a plurality of photovoltaic modules and a plurality of connecting modules, wherein the submodule frame is used for arranging the battery packaging unit and is provided with an interconnection circuit for connecting with the photovoltaic cells; The micro-optimizer is positioned at one side of the battery packaging unit and connected with the photovoltaic cells through an interconnection circuit, and the micro-optimizer is suitable for controlling a plurality of photovoltaic cells in the battery packaging unit.
2. The modular photovoltaic assembly of claim 1, wherein, The sub-module frame is provided with a chip groove; the photovoltaic sub-module further comprises an RFID chip which is positioned in the chip groove.
3. The modular photovoltaic assembly of claim 1, wherein, The standardized plug interface comprises a jack and a plug; The plug is a conductive contact protruding out of the side edge of the submodule frame, and the plug is made of a conductive material; The jack is a slotted hole recessed in the side edge of the submodule frame, a spring needle contact is arranged in the jack, and a metal layer is arranged on the surface of the spring needle contact; The jack and the plug are in contact with the spring needle contact through the conductive contact to realize electrical connection; The plugs of the photovoltaic sub-modules are connected with the jacks of the adjacent photovoltaic sub-modules in a plugging mode, a group of plugging connection structures are formed, and the adjacent two photovoltaic sub-modules are electrically and mechanically connected through at least one group of plugging connection structures.
4. The modular photovoltaic assembly of claim 3, wherein, The surface of the plug is provided with a first magnetic component, and the jack is internally provided with a second magnetic component; the receptacle and the plug are adapted to be magnetically aligned and secured by the first magnetic member and the second magnetic member.
5. The modular photovoltaic assembly of claim 1, wherein, The overlooking graph of the battery packaging unit is rectangular; The length of the rectangle is 5 cm-20 cm, the width is 5 cm-20 cm; the battery packaging unit includes: the photovoltaic module comprises a laminated cover plate layer, a first packaging adhesive layer, a sub-module battery layer, a second packaging adhesive layer and a back plate layer, wherein the sub-module battery layer comprises a photovoltaic cell; the standardized plug interface is positioned on the side face of the sub-module frame and is connected with the photovoltaic cells in the sub-module cell layer through the interconnection circuit.
6. The modular photovoltaic assembly of claim 5, wherein, The miniature optimizer and the standardized plug interface are respectively positioned on different sides of the battery packaging unit; Or the standardized plug interfaces are positioned on four sides of the submodule frame, and the miniature optimizer is positioned on one side of the battery packaging unit, which is close to the back plate layer.
7. The modular photovoltaic assembly of claim 6, wherein, The photovoltaic cells in the submodule cell layers are perovskite cells, crystalline silicon cells or perovskite-crystalline silicon laminated cells; The crystalline silicon battery comprises TOPCon crystalline silicon batteries, PERC crystalline silicon batteries, HJT crystalline silicon batteries or IBC crystalline silicon batteries; The perovskite-crystalline silicon laminated cell comprises a perovskite-TOPCon crystalline silicon cell, a perovskite-PERC crystalline silicon cell, a perovskite-HJT crystalline silicon cell or a perovskite-IBC crystalline silicon cell; each photovoltaic submodule comprises 1-4 photovoltaic cell pieces.
8. The modular photovoltaic assembly of claim 7, wherein, The photovoltaic cell of the sub-module cell layer is a perovskite-TOPCon crystal silicon laminated cell; The submodule battery layer comprises a perovskite battery layer and a TOPCon crystal silicon battery layer which are stacked, wherein the perovskite battery layer is close to one side of the cover plate layer, and the TOPCon crystal silicon battery layer is close to one side of the back plate layer; The standardized plug interface is simultaneously connected with the perovskite battery layer and the TOPCon crystal silicon battery layer through the interconnection circuit; each photovoltaic submodule comprises 1 perovskite-TOPCon crystal silicon laminated cell piece; the length of the rectangle is 15cm, and the width is 15cm.
9. The modular photovoltaic assembly of claim 7, wherein, The photovoltaic cell in the submodule cell layer is a perovskite cell, and the submodule cell layer is a perovskite cell layer; Each photovoltaic sub-module comprises 2 perovskite cell pieces; The standardized plug interface is connected with the perovskite battery layer through the interconnection circuit; The length of the rectangle is 10cm, and the width of the rectangle is 10cm; the thickness of the cover plate layer is 3.2mm, and the thickness of the first packaging adhesive layer is 0.5mm; The thickness of the second packaging adhesive layer is 0.5mm, and the thickness of the backboard layer is 2mm; The modular photovoltaic assembly comprises 100 photovoltaic sub-modules distributed in a 10 x 10 array.
10. The modular photovoltaic assembly of claim 3, wherein, The dimension of the plug protruding from the side edge of the sub-module frame is larger than the dimension of the jack recessed from the side edge of the sub-module frame; When the plugs and jacks of adjacent photovoltaic sub-modules are fully contacted to the greatest extent, gaps are formed between adjacent sub-module frames; the modular photovoltaic assembly further comprises: The silica gel light-transmitting layer is used for filling gaps between adjacent photovoltaic sub-modules; The width of the gap is 1 mm-2 mm, and the light transmittance of the silica gel light-transmitting layer is more than 95%.

Description

Modularized photovoltaic assembly Technical Field The utility model relates to the technical field of photovoltaic modules, in particular to a modularized photovoltaic module. Background At present, the photovoltaic module adopts an integral packaging design (for example, 60 or 72 batteries are packaged in series into a 1903mm multiplied by 1134mm or 2278mm multiplied by 1134mm module), the batteries are connected in series through welding strips, and the edges of the batteries are intensively output through a junction box. If the components are locally hot spots, hidden cracks or aged, the whole components are required to be disassembled and replaced, the operation and maintenance cost is high (accounting for 30% -40% of the total cost of the system), a fault area cannot be rapidly positioned, secondary damage is easily caused in the disassembly process, the maintenance efficiency is low, the compatibility is poor, and the efficiency loss (> 5%) of the system is caused by mismatching of current-voltage characteristics when new and old components are mixed. In the prior art, the internal part of the component is usually divided into a plurality of substrings and diodes are arranged in parallel, but only partial short circuits can be isolated, and damaged units cannot be replaced. The traditional assembly has high operation and maintenance cost and serious resource waste due to the inseparable rigid structure. Therefore, there is a need for a modular solution supporting locally replaced and compatible photovoltaic modules. Disclosure of utility model In view of the above, the utility model provides a modularized photovoltaic module to solve the problems of incapability of partially replacing photovoltaic module units, high operation and maintenance cost and serious resource waste in the related art. In a first aspect, the present utility model provides a modular photovoltaic module comprising: The modularized photovoltaic assembly comprises a plurality of photovoltaic sub-modules distributed in an array; wherein each photovoltaic sub-module comprises: the battery packaging unit comprises a plurality of photovoltaic cells which are completely packaged and are completely interconnected; The photovoltaic module comprises a sub-module frame, a photovoltaic module and a plurality of connecting modules, wherein the sub-module frame is used for arranging a battery packaging unit and is provided with an interconnection circuit for connecting with a photovoltaic cell; The micro-optimizer is positioned at one side of the battery packaging unit and connected with the photovoltaic cells through the interconnection circuit, and the micro-optimizer is suitable for controlling a plurality of photovoltaic cells in the battery packaging unit. According to the modularized photovoltaic module, on the first hand, through arranging the photovoltaic sub-modules distributed in the array, each photovoltaic sub-module can be partially disassembled and replaced, the limit of a non-detachable rigid structure of the traditional module is broken through, the local replacement flexibility of the photovoltaic module is improved, the fault maintenance time is shortened to be within 10 minutes, the fault maintenance time is greatly shortened, and therefore operation and maintenance cost is reduced, on the second hand, the electrical connection and the mechanical connection between two adjacent photovoltaic sub-modules are realized through the standardized plug interface, the plug and play electrical connection between the two photovoltaic sub-modules can be realized, the plug life of the standardized plug interface is long, the reliability is high, the reliability and the stability between the photovoltaic sub-modules can be improved, and on the third hand, the photovoltaic cells in each photovoltaic sub-module can be independently tracked by adopting independent MPPT control and integrated DC-DC conversion, the problem of the maximum power point is solved, the efficiency of each photovoltaic sub-module is improved, the efficiency of the photovoltaic sub-module is further improved, the whole photovoltaic module can be automatically monitored, and the fault state of the whole photovoltaic module can be automatically monitored, and the real-time system can be reduced. Therefore, the modularized photovoltaic module provided by the utility model can improve the flexibility of local replacement of the photovoltaic module, shorten the fault maintenance time and reduce the operation and maintenance cost, and simultaneously can improve the reliability and stability among the photovoltaic sub-modules, improve the efficiency of each photovoltaic sub-module, further improve the overall efficiency of the photovoltaic module and reduce the attenuation of the overall efficiency of a system of the photovoltaic module. In an alternative embodiment, the sub-module frame is provided with a chip recess; the photovoltaic sub-module further comprises an RFID ch