CN209896083U

CN209896083U - Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module

Info

Publication number: CN209896083U
Application number: CN201920540767.1U
Authority: CN
Inventors: 陈国清; 朱琛; 吕俊
Original assignee: Taizhou Longi Solar Technology Co Ltd
Current assignee: Longi Green Energy Technology Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-03
Anticipated expiration: 2029-04-19

Abstract

The application discloses a photovoltaic module circuit unit, a photovoltaic module circuit and a photovoltaic module, wherein the photovoltaic module circuit unit comprises at least two first solar cell units which are respectively connected with diodes in reverse parallel, each first solar cell unit comprises at least two second solar cell units which are connected in series, each second solar cell unit comprises at least two solar cell string units which are connected in parallel, each solar cell string unit comprises a plurality of solar cells which are connected in series, and the sum of the currents of the first solar cell units is larger than the current of the whole cell; the photovoltaic module circuit comprises at least two photovoltaic module circuit units connected in series; the photovoltaic module comprises a plurality of solar battery packs, and the solar battery packs are electrically connected through a photovoltaic module circuit, so that the current of the module exceeds the current of the whole battery piece, and the power of the module is improved.

Description

Photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module

Technical Field

The utility model relates to a power generation field, concretely relates to photovoltaic power generation field especially relates to a photovoltaic module circuit unit, photovoltaic module circuit and photovoltaic module.

Background

In the existing half-chip assembly technology, the characteristics of a circuit are limited, namely the circuit is vertically symmetrical, an upper part and a lower part are connected in parallel, each part of batteries are connected in series, the assembly current is about the current of a whole battery, the current cannot exceed the current of the whole battery, and the power promotion range is limited.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a photovoltaic module circuit unit, a photovoltaic module circuit and a photovoltaic module having a module current exceeding the entire current.

In a first aspect, the utility model discloses a photovoltaic module circuit unit, including at least two respectively with the reverse parallelly connected first solar cell unit of diode, first solar cell unit includes the second solar cell unit of two at least series connections, the second solar cell unit includes two at least parallelly connected solar cell string units, solar cell string unit includes the solar cell of a plurality of series connections, the electric current sum of each first solar cell unit is greater than the electric current of whole piece battery piece.

In a second aspect, the present invention provides a photovoltaic module circuit, comprising at least two photovoltaic module circuit units connected in series.

Third aspect, the utility model discloses a photovoltaic module, including a plurality of solar cell group, a plurality of solar cell group carry out the electricity through the photovoltaic module circuit and connect.

According to the technical scheme provided by the embodiment of the application, at least two solar batteries are connected in series to form a solar battery string unit, at least two solar battery string units are connected in parallel to form a second solar battery unit, at least two second solar battery units are connected in series to form a first solar battery unit, at least two first solar battery units are connected in parallel and are connected with a diode in a reverse parallel mode, the sum of the currents of the first solar battery units is larger than the current of the whole battery piece, the assembly current exceeds the current of the whole battery piece, the assembly power is improved, and the problems that the current of the existing half-piece assembly cannot exceed the current of the whole battery piece and the assembly power is low can be solved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of a conventional photovoltaic module circuit;

fig. 2 is a schematic structural diagram of a photovoltaic module circuit according to an embodiment of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

One of the embodiments of the present invention is, please refer to fig. 2, the present invention discloses a photovoltaic module circuit, which includes at least two first solar battery cells connected in parallel with the diode 20 in reverse direction, the first solar battery cell includes at least two second solar battery cells connected in series, the second solar battery cell includes at least two solar battery string units connected in parallel, and the solar battery string units include a plurality of solar batteries 10 connected in series.

In the embodiment of the present invention, fig. 1 is a schematic circuit diagram of a conventional photovoltaic module, and a battery is taken as an example for detailed comparative description, and of course, the half-cut battery is only for convenience of description and does not limit the battery. In fig. 1, a plurality of solar cells are connected in series to form a small cell string, two adjacent small cell strings are connected in series to form a large cell string, and then two large cells are connected in series and in parallel in reverse direction with diodes, 3 diodes and 12 solar cell string units are included in fig. 1, and the current of the assembly is the current of the whole cell. Fig. 2 is a schematic circuit diagram of the photovoltaic module of this application, constitute solar cell string unit to the polylith solar cell series connection, two parallelly connected second solar cell units that constitute of solar cell string unit, two second solar cell units establish ties and constitute first solar cell unit, two first solar cell units are parallelly connected and are parallelly connected with the diode reversal, 2 diodes and 16 solar cell string units have been contained in fig. 2, the module electric current is greater than the electric current of whole piece battery, for the circuit in fig. 1, the photovoltaic module circuit of this application can promote the module electric current, thereby promote the module power. In addition, under the condition of the same number of solar cells, the voltage of the assembly can be reduced, and in the installation process of the photovoltaic assembly, more assemblies can be installed on the same inverter, so that the installation cost is reduced.

In order to adapt to the specifications of the existing cables and accessories, the current of the existing solar module usually does not exceed the current of the whole battery, but the voltage of the module is larger, and in the installation process, the number of the modules which can be installed in the same inverter is small, and more inverters are needed. The assembly current of the application exceeds the current of the whole battery, the assembly voltage can be reduced, more assemblies can be installed on the same inverter, the number of inverters used in the installation process can be reduced, and installation cost can be greatly reduced by reducing the number of inverters used for replacing cables and accessories.

Further, two first solar battery cells are connected in parallel and in anti-parallel with the diode 20, the diode 20 being located between the two first solar battery cells.

The utility model discloses an in the embodiment, two first solar cell units are parallelly connected and are connected in parallel with the diode reverse parallel, and the diode is located between two first solar cell units, is convenient for typeset solar cell, reduces the typesetting degree of difficulty.

Further, the two first solar battery units form a mirror symmetry circuit.

The embodiment of the utility model provides an in, two first solar cell units constitute mirror symmetry circuit, are convenient for typeset solar cell, reduce the typesetting degree of difficulty.

Further, the solar cell 10 is formed by equally dividing the whole cell piece N, the number of the first solar cell units is a, the number of the solar cell string units is B, N, A and B satisfy the following relation:

AB/N＞1。

the embodiment of the utility model provides an in, improve the subassembly electric current through parallelly connected to solar wafer to half-cut solar wafer, the quantity of first solar cell unit is 2, and the quantity of solar cell cluster unit is 2 and carries out the detailed description, and the subassembly electric current is 4/3 whole battery pieces electric current this moment, has surpassed whole battery pieces electric current, thereby promotes the subassembly power. In addition, under the condition of the same number of solar cells, the voltage of the assembly can be reduced, and in the installation process of the photovoltaic assembly, more assemblies can be installed on the same inverter, so that the installation cost is reduced.

Further, the solar cells 10 are electrically connected to each other by a metal solder strip, a conductive adhesive, or a conductive polymer.

Furthermore, two adjacent solar cell string units are connected in parallel to form a second solar cell unit.

The utility model discloses an in the embodiment, two adjacent solar cells connect in parallel and constitute second solar cell unit, and the photovoltaic module circuit of being convenient for realizes netted circuit, reduces photovoltaic module's the processing degree of difficulty, promotes photovoltaic module's generated energy.

Furthermore, two adjacent second solar battery units are connected in series to form a first solar battery unit.

The utility model discloses an in the embodiment, two adjacent second solar cell units establish ties and constitute first solar cell unit, and the photovoltaic module circuit of being convenient for realizes netted circuit, reduces photovoltaic module's the processing degree of difficulty, promotes photovoltaic module's generated energy.

Further, two adjacent first solar battery cells are connected in parallel and in anti-parallel with the diode 20.

The utility model discloses an in the embodiment, two adjacent first solar cell units are parallelly connected and are connected in parallel with the diode reverse parallel, and the photovoltaic module circuit of being convenient for realizes netted circuit, reduces photovoltaic module's the processing degree of difficulty, promotes photovoltaic module's generated energy.

Another embodiment of the present invention is a photovoltaic module circuit, comprising at least two photovoltaic module circuit units connected in series.

The utility model discloses an in the embodiment, the photovoltaic module circuit can promote the subassembly electric current to promote subassembly power. In addition, under the condition of the same number of solar cells, the number of diodes can be reduced, the production and manufacturing cost can be reduced, meanwhile, the voltage of the assembly can also be reduced, and in the installation process of the photovoltaic assembly, more assemblies can be installed on the same inverter, so that the installation cost is reduced.

Another embodiment of the present invention is a photovoltaic module, comprising a plurality of solar cell sets electrically connected by a photovoltaic module circuit.

The embodiment of the utility model provides an in, establish ties at least two solar cells and constitute solar cell string unit, at least two parallelly connected second solar cell units that constitute of solar cell string unit, at least two second solar cell units establish ties and constitute first solar cell unit, and at least two first solar cell units are parallelly connected and are connected in parallel with the diode reversal, under the prerequisite of guaranteeing the solar cell reliability, and a diode can compromise at least eight solar cells, can reduce the quantity of diode, reduction in production cost.

Further, two solar cell sets are included.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A photovoltaic module circuit unit is characterized by comprising at least two first solar battery units which are respectively connected with diodes in reverse parallel, wherein each first solar battery unit comprises at least two second solar battery units which are connected in series, each second solar battery unit comprises at least two solar battery string units which are connected in parallel, each solar battery string unit comprises a plurality of solar batteries which are connected in series, and the sum of the currents of the first solar battery units is larger than the current of the whole battery piece.

2. The photovoltaic module circuit unit according to claim 1, wherein two of the first solar cell units are connected in parallel and in anti-parallel with the diode, the diode being located between the two first solar cell units.

3. The photovoltaic module circuit unit according to claim 2, wherein two of the first solar cell units constitute a mirror-symmetric circuit.

4. The circuit unit of claim 1, wherein the solar cell is formed by cutting a whole cell sheet N equally, the number of the first solar cell units is a, the number of the solar cell string units is B, and N, A and B satisfy the following relations:

AB/N＞1。

5. the photovoltaic module circuit unit according to claim 1, wherein the solar cells are electrically connected to each other by a metal solder ribbon, a conductive adhesive, or a conductive polymer.

6. The photovoltaic module circuit unit according to claim 1, wherein two adjacent solar cell string units are connected in parallel to constitute the second solar cell unit.

7. The photovoltaic module circuit unit according to claim 1, wherein two adjacent second solar cell units are connected in series to constitute the first solar cell unit.

8. The photovoltaic module circuit unit according to claim 1, wherein two adjacent first solar cells are connected in parallel and in anti-parallel with the diode.

9. A photovoltaic module circuit comprising at least two photovoltaic module circuit units according to any one of claims 1 to 8 connected in series.

10. A photovoltaic module comprising a plurality of solar cell sets electrically connected by the photovoltaic module circuit of claim 9.