CN211557192U

CN211557192U - Photovoltaic system

Info

Publication number: CN211557192U
Application number: CN202020652604.5U
Authority: CN
Inventors: 谢先格; 黄猛; 张宁波; 黄毅翔; 刘秤明
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-09-22
Anticipated expiration: 2030-04-26

Abstract

The utility model relates to a photovoltaic system, it includes: a photovoltaic module comprising a transmitting coil; and a power receiving module including a receiving coil, the transmitting coil and the receiving coil configured to wirelessly transmit power, the power receiving module and the photovoltaic module each being provided separately. The utility model provides a transmitting coil among the photovoltaic module and receiving coil among the power receiving module adopt wireless power transmission's mode, the photovoltaic module surface need not to set up the cable, installation or change photovoltaic module can not cause the damage to the cable, very big promotion the convenience of photovoltaic module dismouting, and photovoltaic module and power receiving module separately set up separately respectively, no matter damage or other problems appear in photovoltaic module or power receiving module, can change alone, can not cause the damage to another part, the maintenance cost is reduced.

Description

Photovoltaic system

Technical Field

The utility model relates to a photovoltaic field especially relates to a photovoltaic system.

Background

At present, the global demand for energy is rapidly increased, the traditional fossil energy is greatly consumed and is nearly exhausted, and meanwhile, the problem of environmental pollution caused by the fossil energy is extremely severe. Solar energy is a renewable clean energy and occupies a great position in the field of new energy. The most convenient way of utilizing solar energy is to convert light into electricity, and photovoltaic is a short for a solar photovoltaic power generation system, is a power generation system which directly converts solar radiation energy into electric energy by utilizing the photovoltaic effect of a solar cell semiconductor material, can independently operate and can be operated in a grid-connected mode, and has the advantages of safety, reliability, no pollution and the like.

The integrated terminal box of dual-glass photovoltaic module among the correlation technique and draw forth the end, through terminal box and draw forth end transmission electric power, the subassembly cost is higher, and because the wire rod exposes to the sun and causes the reliability to descend, the wire rod can not be changed alone, can only change monoblock dual-glass photovoltaic module for later stage system maintenance cost increases.

Disclosure of Invention

Some embodiments of the utility model provide a photovoltaic system for alleviate the problem that the maintenance cost is high.

Some embodiments of the utility model provide a photovoltaic system, it includes:

a photovoltaic module comprising a transmitting coil; and

a power receiving module comprising a receiving coil, the transmitting coil and the receiving coil configured for wireless power transfer, the power receiving module and the photovoltaic assembly each being separately disposed.

In some embodiments, the photovoltaic module comprises a first plate, a first packaging layer, a cell layer, a second packaging layer, the transmitting coil, a third packaging layer and a second plate which are sequentially arranged and integrally packaged.

In some embodiments, the photovoltaic module further comprises a bypass diode electrically connected to the cell layer.

In some embodiments, the bypass diode is disposed on a side of the second board away from the first board, or the bypass diode is disposed between the battery layer and the first encapsulation layer, or the bypass diode is disposed between the battery layer and the second encapsulation layer.

In some embodiments, the photovoltaic system further comprises a mounting member and a bus bar, the photovoltaic module and the power receiving module are arranged on the mounting member, the mounting member is provided with a wire slot, the bus bar is arranged in the wire slot, and the power receiving module is electrically connected with the bus bar.

In some embodiments, the mount comprises a tube, the interior of which forms a wireway that receives the busbar.

In some embodiments, the mounting member is provided with a first fastener, the photovoltaic module is provided with a second fastener, and the first fastener is matched with the second fastener.

In some embodiments, the photovoltaic system further comprises a connecting member, the second fastener is provided with a first hole, the first fastener is provided with a second hole, and the connecting member is in threaded connection with the first hole and the second hole.

In some embodiments, the tube includes a first tube and a second tube arranged side by side, the photovoltaic module is disposed between the first tube and the second tube, and the power receiving module is disposed between the first tube and the second tube and below the photovoltaic module.

In some embodiments, at least two photovoltaic modules are arranged along the length extension direction of the first pipe and the second pipe, and a power receiving module is arranged below each photovoltaic module.

In some embodiments, an interior of at least one of the first and second tubular members forms a wireway that houses the bus bar.

In some embodiments, the first and second catches are configured as mating crosses.

In some embodiments, the transmit coil comprises an electromagnetic induction transmit coil and the receive coil comprises an electromagnetic induction receive coil.

Based on the technical scheme, the utility model discloses following beneficial effect has at least:

in some embodiments, a transmitting coil in the photovoltaic module and a receiving coil in the power receiving module adopt a wireless power transmission mode, a cable is not required to be arranged on the outer surface of the photovoltaic module, the cable cannot be damaged when the photovoltaic module is installed or replaced, the convenience of the disassembly and assembly of the photovoltaic module is greatly improved, the photovoltaic module and the power receiving module are separately arranged, the photovoltaic module and the power receiving module can be independently replaced no matter the photovoltaic module or the power receiving module is damaged or has other problems, another part cannot be damaged, and the maintenance cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic view of a photovoltaic module in a photovoltaic system provided in accordance with some embodiments of the present invention prior to installation over a power receiving module;

fig. 2 is a schematic front view of a photovoltaic module provided according to some embodiments of the present invention;

fig. 3 is a schematic rear view of a photovoltaic module provided in accordance with some embodiments of the present invention;

fig. 4 is a schematic cross-sectional view of a photovoltaic module provided according to some embodiments of the present invention.

The reference numbers in the drawings illustrate the following:

1-a photovoltaic module; 11-a transmitting coil; 12-a first plate; 13-a first encapsulation layer; 14-a battery piece; 15-a second encapsulation layer; 16-a third encapsulation layer; 17-a second plate; 18-a second snap;

2-a power receiving module; 21-a receiving coil;

3-a bypass diode;

4-a mounting member; 41-a first tube; 42-a second tubular; 43-a first catch;

5-connecting piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the invention.

As shown in fig. 1, some embodiments provide a photovoltaic system including a photovoltaic module 1 and a power receiving module 2.

The photovoltaic module 1 comprises a transmitting coil 11.

The power receiving module 2 includes a receiving coil 21, the transmitting coil 11 and the receiving coil 21 are configured to transmit power wirelessly, and the power receiving module 2 and the photovoltaic module 1 are separately provided.

The wireless power transmission includes converting the generated power into radio waves by the photovoltaic module 1, transmitting the radio waves, and collecting and converting the radio waves into power by the power receiving module 2.

In the related art, the junction box is arranged on the photovoltaic assembly and comprises a cable, the cable is used for being connected with a bus, no matter the photovoltaic assembly, the junction box or the cable has problems, the photovoltaic assembly and the junction box arranged on the photovoltaic assembly need to be replaced together, the maintenance cost is high, if the photovoltaic assembly or the junction box is replaced independently, the photovoltaic assembly and the junction box need to be disassembled, the junction box is disassembled, the photovoltaic assembly can be damaged, power loss and even fire hazard are caused, and in the process of disassembling and assembling the photovoltaic assembly and the junction box, the wiring terminals between the photovoltaic assembly and the junction box are difficult to separate, or the wiring terminals are prone to being broken due to aging of the wiring terminals in the.

In some embodiments of the present disclosure, the transmitting coil 11 in the photovoltaic module 1 and the receiving coil 21 in the power receiving module 2 adopt a wireless power transmission mode, the outer surface of the photovoltaic module 1 does not need to be provided with any cable connected with the power receiving module 2 or a bus, the photovoltaic module 1 is installed or replaced without causing damage to any cable, the convenience of dismounting and mounting the photovoltaic module 1 is greatly improved, and the photovoltaic module 1 is not provided with a junction box, so that the cost of the junction box is saved, furthermore, the photovoltaic module 1 and the power receiving module 2 are separately arranged, no matter the photovoltaic module 1 or the power receiving module 2 is damaged or has other problems, the photovoltaic module can be replaced independently, no damage is caused to another part, and the maintenance cost is reduced.

In some embodiments, as shown in fig. 4, the photovoltaic module 1 further comprises a first plate 12, a first encapsulant layer 13, a cell layer 14, a second encapsulant layer 15, a third encapsulant layer 16, and a second plate 17.

The first plate 12, the first packaging layer 13, the battery layer 14, the second packaging layer 15, the transmitting coil 11, the third packaging layer 16 and the second plate 17 are sequentially arranged and integrally packaged.

In some embodiments, the first plate 12 and the second plate 17 are made of glass materials, and the photovoltaic module 1 is a dual-glass photovoltaic module having excellent properties such as high insulation, good weather resistance, long service life, and PID resistance.

In some embodiments, as shown in fig. 2 and 3, the first panel 12 is a front panel and the second panel 17 is a back panel.

In some embodiments, the first encapsulation layer 13, the second encapsulation layer 15, and the third encapsulation layer 16 are all adhesive film layers. The material forming the film layer comprises ethylene-vinyl acetate copolymer, or ethylene-butylene/octene copolymer, or polyvinyl butyral.

In some embodiments, the first encapsulant layer 13, the second encapsulant layer 15, and the third encapsulant layer 16 are all white, so as to hide the transmitting coil 11, thereby making the photovoltaic module 1 more attractive.

In some embodiments, the battery layer 14 includes more than two battery strings, each battery string being electrically connected by a bus bar. The bus bar is a conductive connecting member of a multilayer laminated structure.

In some embodiments, the battery string comprises more than two battery pieces, and the battery pieces are connected through welding strips.

In some embodiments, the cell pieces comprise crystalline silicon cell pieces.

In some embodiments, the photovoltaic system includes bypass diode 3, bypass diode 3 electrically connected to cell layer 14.

When one of the battery pieces is damaged or burnt out due to the hot spot effect and can not generate power, the bypass diode 3 plays a bypass role, so that current generated by other battery pieces flows out of the bypass diode 3, the photovoltaic system can continue to generate power, the situation that a power generation circuit is not communicated due to the problem of one battery piece is avoided, namely, the bypass diode 3 can bypass the group string with the problem, and the power loss is reduced.

For example: the battery layer 14 comprises 60 battery pieces, the 60 battery pieces are divided into three strings, three bypass diodes 3 are arranged, if one battery piece is shielded or damaged, a power generation source is changed into a load, power loss and even fire happen, and the bypass diodes 3 are used for bypassing the battery string where the problem battery piece is located, so that normal power generation of the remaining two strings is guaranteed.

In some embodiments, as shown in fig. 3, the bypass diode 3 is provided on a side of the second plate 17 remote from the first plate 12.

In the embodiment where the first plate 12 is a front plate and the second plate 17 is a back plate, the bypass diode 3 is bonded to the outer side of the back plate glass, and the bypass diode 3 is externally mounted.

In some embodiments, bypass diode 3 is disposed between battery layer 14 and first encapsulation layer 13. Alternatively, the bypass diode 3 is provided between the battery layer 14 and the second encapsulation layer 15. The bypass diode 3 is directly laminated on the battery layer 14 using a built-in chip type.

In some embodiments, the photovoltaic system includes a mount 4, and the photovoltaic module 1 and the power receiving module 2 are provided to the mount 4.

Installation part 4 is located respectively to photovoltaic module 1 and power receiving module 2, and adopts wireless power transmission between photovoltaic module 1 and the power receiving module 2, need not to set up the cable, when photovoltaic module 1 goes wrong, can directly change photovoltaic module 1, and can not be because of photovoltaic module 1 and power receiving module 2 cable junction or set up integratively, and need change photovoltaic module 1 and power receiving module 2 together, has reduced the maintenance cost.

In some embodiments, the mounting member 4 is provided with a wire casing in which the bus bar is buried, and the power receiving module 2 is electrically connected to the bus bar. The power receiving module 2 is connected with a bus buried in the wire slot, no cable is exposed, and the reliability of the cable is prevented from being reduced under the sun exposure, so that the reliability and the attractiveness of the photovoltaic system are improved.

In some embodiments, the mount 4 comprises a tube, the interior of which forms a wireway that houses the bus bar.

Because the wireless power transmission is adopted between the photovoltaic module 1 and the power receiving module 2, a cable is not required to be arranged, the power receiving module 2 is connected with a bus buried in the pipe fitting, no cable is exposed, the reliability of the cable is prevented from being reduced due to sunshine exposure, the reliability and the attractiveness of the photovoltaic system are improved, and the problem of damage to the cable in the process of disassembly and assembly is solved.

In some embodiments, the tubular comprises a square or round tube.

The pipe fitting is made of hard materials, has a protection effect on cables embedded in the pipe fitting, and has a supporting effect on the photovoltaic module 1 and the power receiving module 2 which are installed on the pipe fitting.

In some embodiments, the installation part 4 is provided with more than two photovoltaic assemblies 1, each photovoltaic assembly 1 is correspondingly provided with the power receiving module 2, after one photovoltaic assembly 1 goes wrong, the problematic photovoltaic assembly can be independently replaced, fixed-point disassembly and installation is realized, the disassembly and assembly mode is more convenient and faster, meanwhile, no cable connected with the power receiving module 2 exists on the outer surface of the photovoltaic assembly 1, the risk of cable aging and damage is eliminated, and the maintenance cost is reduced.

In some embodiments, the mounting member 4 is provided with a first fastener 43, the photovoltaic module 1 is provided with a second fastener 18, and the first fastener 43 is adapted to the second fastener 18.

Photovoltaic module 1 and installed part 4 are connected through the cooperation of first buckle 43 and second buckle 18.

When assembling photovoltaic module 1, the installation of photovoltaic module 1 can be realized only by aligning second fastener 18 with first fastener 43 and pressing down, and the manual alignment is not needed, so that the error is small, the efficiency is high, the phenomenon of photovoltaic module 1 dislocation is avoided, and the disassembly is convenient.

As shown in fig. 3, the second fastener 18 is disposed on the second plate in the photovoltaic module 1, and optionally, the second fastener 18 is disposed on the back plate glass. Optionally, the second fastener 18 is bonded to the outside of the back plate glass.

In some embodiments, the first clasp 43 is provided on the tube.

In some embodiments, the photovoltaic system further comprises a connector 5, the second fastener 18 is provided with a first hole, the first fastener 43 is provided with a second hole, and the connector 5 is in threaded connection with the first hole and the second hole.

In some embodiments, the second latch 18 includes a protrusion, and the first latch 43 includes a recess, and the protrusion is fittingly connected to the recess.

In some embodiments, as shown in fig. 1, the tube includes a first tube 41 and a second tube 42 arranged side by side, the photovoltaic module 1 is disposed between the first tube 41 and the second tube 42, and the power receiving module 2 is disposed between the first tube 41 and the second tube 42 and is located below the photovoltaic module 1.

In some embodiments, at least two photovoltaic modules 1 are arranged along the length extension direction of the first pipe 41 and the second pipe 42, and a power receiving module 2 is arranged below each photovoltaic module 1.

In some embodiments, each photovoltaic module 1 disposed between the first pipe 41 and the second pipe 42 is connected to the first fastener 43 on the first pipe 41 and the second pipe 42 through the second fastener 18, so that the detachment is convenient.

When maintaining photovoltaic system, if need to change middle photovoltaic module, need not to demolish all photovoltaic modules of this middle photovoltaic module one side, can directly pull down middle photovoltaic module can, use manpower sparingly and time.

In some embodiments, the interior of at least one of the first tube 41 and the second tube 42 forms a wireway that houses the bus bar. Each power receiving module 2 is connected to a bus.

In some embodiments, as shown in fig. 1, the first pipe 41 and the second pipe 42 are both provided with a first fastener 43, as shown in fig. 3, the two ends of the photovoltaic module 1 are both provided with a second fastener 18, and the second fasteners 18 at the two ends of the photovoltaic module 1 are respectively connected to the first fastener 43 on the first pipe 41 and the first fastener 43 on the second pipe 42.

Optionally, the connecting member 5 comprises a bolt, the head of which is provided with anti-slip threads, the head of the bolt being locked by a nut.

Optionally, a spring is placed between the bolt and the tube.

Optionally, a non-slip pad is placed between the bolt and the nut.

In some embodiments, the first and

second catches

43, 18 are configured as mating crosses.

In some embodiments, the first clasp 43 and the second clasp 18 are perforated in the middle to facilitate bolting.

In some embodiments, the mounting member 4 comprises a first tube 41 and a second tube 42, and the first tube 41 and the second tube 42 are provided with cross-shaped slots, and bolt holes are reserved in the middle of the cross-shaped slots. Two or more power receiving modules 2 are connected between the first pipe 41 and the second pipe 42. The power receiving modules 2 are connected in series by a bus bar in the first pipe 41 and/or the second pipe 42, and transmit generated power.

In some embodiments, the transmitter coil 11 comprises an electromagnetic induction transmitter coil and the receiver coil 21 comprises an electromagnetic induction receiver coil.

In some embodiments, the power receiving module 2 comprises a carrier, the receiving coil being provided on the carrier.

In some embodiments, as shown in fig. 1, the power receiving module 2 is installed on the installation member 4 in advance, and when the photovoltaic module 1 is installed, the photovoltaic module 1 can be installed on the installation member 4 only by aligning the second fastener 18 on the back panel of the photovoltaic module 1 with the first fastener 43 on the installation member 4 and pressing in the connection.

Further, holes may be formed in the second locking member 18 and the first locking member 43, and the second locking member 18 and the first locking member 43 are connected by tightening a bolt and finally locked by a nut.

When the photovoltaic module 1 works, the transmitting coil 11 is electrified to generate a magnetic field, the receiving coil 21 on the mounting piece 4 induces the magnetic field, the magnetic field is converted into electric energy, and power transmission is realized through the bus pre-buried in the mounting piece 4.

In some embodiments, utilize the electromagnetic induction principle to make the electricity that photovoltaic module 1 sent to pass through wireless power transmission to power receiving module 2, power receiving module 2 is power transmission to generating line, and the use of cooperation quick installed part reaches and saves terminal box and cable cost, installation dismantlement is convenient, bury the line entirely, organize cluster alignment, pleasing to the eye beneficial effect such as reliable.

In the description of the present invention, it should be understood that the terms "first", "second", "third", etc. are used to define the components, and are only used for the convenience of distinguishing the components, and if not stated otherwise, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.

Furthermore, the technical features of one embodiment may be combined with one or more other embodiments advantageously without explicit negatives.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims

1. A photovoltaic system, comprising:

a photovoltaic module (1) comprising an emission coil (11); and

a power receiving module (2) comprising a receiving coil (21), the transmitting coil (11) and the receiving coil (21) being configured for wireless power transfer, the power receiving module (2) and the photovoltaic assembly (1) each being separately disposed.

2. The photovoltaic system according to claim 1, characterized in that said photovoltaic module (1) comprises a first plate (12), a first encapsulating layer (13), a cell layer (14), a second encapsulating layer (15), said emitter coil (11), a third encapsulating layer (16) and a second plate (17) arranged in sequence and integrally encapsulated.

3. The photovoltaic system according to claim 2, characterized in that the photovoltaic module (1) further comprises a bypass diode (3), the bypass diode (3) being electrically connected to the cell layer (14).

4. The photovoltaic system according to claim 3, characterized in that the bypass diode (3) is arranged on the side of the second plate (17) facing away from the first plate (12), or in that the bypass diode (3) is arranged between the cell layer (14) and the first encapsulation layer (13), or in that the bypass diode (3) is arranged between the cell layer (14) and the second encapsulation layer (15).

5. The photovoltaic system according to claim 1, further comprising a mounting member (4) and a busbar, wherein the photovoltaic module (1) and the power receiving module (2) are provided on the mounting member (4), the mounting member (4) is provided with a wire groove, the busbar is provided in the wire groove, and the power receiving module (2) is electrically connected to the busbar.

6. Photovoltaic system according to claim 5, characterized in that the mounting (4) comprises a tube, the inside of which forms a raceway housing the busbar.

7. The photovoltaic system according to claim 5, characterized in that the mounting element (4) is provided with a first snap-in element (43), the photovoltaic module (1) is provided with a second snap-in element (18), and the first snap-in element (43) is adapted to the second snap-in element (18).

8. The photovoltaic system according to claim 7, further comprising a connector (5), wherein the second snap-in element (18) is provided with a first hole, wherein the first snap-in element (43) is provided with a second hole, and wherein the connector (5) is in threaded connection with the first hole and the second hole.

9. The photovoltaic system according to claim 6, characterized in that said tube comprises a first tube (41) and a second tube (42) arranged side by side, said photovoltaic module (1) being arranged between said first tube (41) and said second tube (42), said power receiving module (2) being arranged between said first tube (41) and said second tube (42) and being located below said photovoltaic module (1).

10. The photovoltaic system according to claim 9, characterized in that at least two photovoltaic modules (1) are provided along the length extension of the first and second tube (41, 42), a power receiving module (2) being provided below each photovoltaic module (1).

11. The photovoltaic system of claim 9, wherein an interior of at least one of the first and second tubes (41, 42) forms a raceway to accommodate the bus bar.

12. Photovoltaic system according to claim 7, characterized in that the first snap-in (43) and the second snap-in (18) are configured as adapted crosses.

13. The photovoltaic system according to claim 1, wherein the transmitter coil (11) comprises an electromagnetic induction transmitter coil and the receiver coil (21) comprises an electromagnetic induction receiver coil.