DE202021100822U1 - Solar cell module and solar cell module system - Google Patents

Abstract

Solar cell module (2000)
with one or more solar cells (2121, ...., 2124, 2221, ..., 2224),
with a front-side encapsulation layer (2002),
with a backside encapsulation layer (2003),
wherein the solar cells are arranged between the front-side encapsulation layer (2002) and the rear-side encapsulation layer (2003), and
wherein the solar cells (2121, ...., 2124, 2221, ..., 2224), the front-side encapsulation layer (2002) and the rear-side encapsulation layer (2003) form a laminate,
with a solar cell module frame (2900), wherein the laminate is held in the solar cell module frame (2900),
with an indicator (2910) for solar cell module data,
wherein the indicator (2910) is integrated into the solar cell module frame (2900).

Description

The present invention relates to a solar cell module.

In the WO 2015/001413 A1 A solar cell module is disclosed which comprises several solar cell series circuits (English: solar cell strings), each solar cell series circuit having several solar cells connected in series. The solar cells are arranged between a front-side encapsulation layer and a rear-side encapsulation layer.

The laminate of the front-side encapsulation layer, solar cells and rear-side encapsulation layer is typically held in a solar cell module frame which increases the mechanical stability of the solar cell module.

For regulatory reasons, it is provided that the solar cell modules are provided with information relating to the solar cell module data. These solar cell module data are regularly printed on an adhesive label that is stuck to the back of the laminate.

Proceeding from this, the present invention is based on the object of specifying a solar cell module which can be produced with less effort and in an automated manner.

This problem is solved with the subject matter of the main claim. Advantageous refinements are given in the subclaims.

What is proposed is a solar cell module with one or more solar cells, with a front-side encapsulation layer, with a rear-side encapsulation layer, the solar cells being arranged between the front-side encapsulation layer and the rear-side encapsulation layer, and with the solar cells, the front-side encapsulation layer and the rear-side encapsulation module forming a laminate with a solar cells Laminate is held in the solar cell module frame, with an indicator for solar cell module data, the indicator being integrated into the solar cell module frame.

In a first embodiment, the indicator is printed on the solar cell module frame. A printing process can be integrated into an automated process for manufacturing a solar cell module with little effort. In addition, the solar cell module frame offers a precisely defined printing surface, so that the printing result can be expected to remain the same over several production cycles.

Another embodiment provides that the indicator is integrated into the solar cell module frame by means of laser engraving. A laser engraving can remain recognizable for years, especially under harsh environmental conditions such as weather and UV radiation.

Furthermore, in one embodiment, the indicator can include a QR code. A QR code can simplify automated reading of the indicator, for example using a mobile phone and / or smartphone.

Furthermore, it can be provided that the indicator comprises an RFID tag or NFC transponder. Reading out the RFID tag or the NFC transponder can be possible from a greater distance than reading out a QR code. This can prove to be advantageous, for example, when the solar cell module data of a solar cell module which is attached to a house roof and which is difficult to reach have to be read out.

In addition, a configuration of the solar cell module can provide that a rear side glass or a rear side reinforcement is arranged on the side of the rear side encapsulation layer facing away from the front side encapsulation layer. The rear side glass or the rear side reinforcement can further increase the mechanical resistance of the solar cell module.

Furthermore, in configurations of the solar cell module, a front side glass can be arranged on the side of the front side encapsulation layer facing away from the rear side encapsulation layer. The front glass can on the one hand protect the solar cell module from environmental influences and on the other hand optimize the coupling of light into the solar cells.

In refinements, the solar cell module is set up to generate electricity both when light passes through the front-side encapsulation layer and when light passes through the rear-side encapsulation layer. This can allow the solar cell module to be used in a variety of orientations. Corresponding solar cell modules can also be referred to as bifacial solar cell modules. In the case of bifacial solar cell modules in particular, the advantage of integrating the indicator into the solar cell module frame is evident. Since no area is required for the adhesive label on the back of the solar cell module, more area is available through which light can be received for conversion into electricity. In particular, the laminate can be free from an adhesive label.

It can further be provided that the indicator cannot be detached from the solar cell module frame in a non-destructive manner. This can contribute to the counterfeit security of the indicator.

Furthermore, a solar cell module system comprising a solar cell module described above, a data memory for storing solar cell module data and a read-out unit is proposed, the read-out unit being set up to read out the indicator (2910) of the solar cell module (2000), to retrieve the associated solar cell module data from the data memory, and the Display solar cell module data.

In a first embodiment of the solar cell module system, the readout unit comprises the data memory.

The data memory is advantageously arranged separately from the readout unit, the readout unit being set up to call up the data memory via a wireless connection. The data storage can be, for example, an internet server or cloud storage.

• 1 schematisch ein Solarzellenmodul ohne Solarzellenmodulrahmen in der Aufsicht;
• 2 das in 1 gezeigte Solarzellenmodul in einer schematischen Schnittansicht;
• 3 das in den 1 und 2 gezeigte Solarzellenmodul mit Solarzellenmodulrahmen in der Aufsicht.

The above and other examples are explained below with the aid of the drawings. It shows

• 1 schematically, a solar cell module without a solar cell module frame in plan view;
• 2 this in 1 Solar cell module shown in a schematic sectional view;
• 3 that in the 1 and 2 Solar cell module shown with solar cell module frame in top view.

1 shows a first solar cell module 2000 with several solar cells in series 2121 , 2122 , 2123 , 2124 ; 2221 , 2222 , 2223 , 2224 ; 2321 , 2322 , 2323 , 2324 ; 2111 , 2112 , 2113 , 2114 ; 2211 , 2212 , 2213 , 2214 and 2311 , 2312 , 2313 , 2314 . the solar cell series circuit 2121 , 2122 , 2123 , 2124 can also be seen as the first solar cells to be connected in series. The first solar cell series circuit comprises several, in particular at least two, solar cells connected in series 2121 , 2122 , 2123 and 2124 . In the 1 four solar cells per solar cell series circuit are shown. However, it is also conceivable to provide eight, ten, twelve or, in particular, twenty solar cells per solar cell series circuit. The solar cells of the first solar cell series connection are arranged in two rows. One row includes the solar cells 2121 and 2122 and the other row includes the solar cells 2123 and 2124 . The other solar cell series circuits of the solar cell module 2000 are constructed in the same way, with the solar cells being connected in series 2111 , 2112 , 2113 , 2114 ; 2211 , 2212 , 2213 , 2214 and 2311 , 2312 , 2313 , 2314 each mirror symmetrical to the solar cell series circuits 2121 , 2122 , 2123 , 2124 ; 2221 , 2222 , 2223 , 2224 and 2321 , 2322 , 2323 , 2324 are arranged. Accordingly, the solar cell module 2000 six times twenty solar cells arranged in twenty rows and six rows. It is conceivable to vary the number of lines and thus the number of solar cells per solar cell series circuit. Likewise, more or fewer solar cell series connections can be used, so that the number of rows can also differ. Embodiments can also provide that the solar cell series circuits of the lower half of the solar cell module 2000 as it is in the 1 is shown, omitted.

A first bridging element 2151 is parallel to the first solar cell series circuit 2121 , 2122 , 2123 , 2124 switched. A second bridging element is comparable 2251 parallel to the second solar cell series connection 2221 , 2222 , 2223 , 2224 switched. The bridging elements 2151 and 2251 are in the in the 1 shown example of a solar cell module 2000 designed as diodes. However, it is also conceivable, instead of the diodes, other bridging elements, e.g. B. active switches to use.

In the 2 is shown that the solar cells 2111 , ..., 2114 ; 2211 , ..., 2214 ; 2311 , ... 2314 the total of six solar cell series circuits of the solar cell module 2000 between a front-side encapsulation layer 2002 and a backside encapsulation layer 2003 are arranged. The front encapsulation layer 2002 and the backside encapsulation layer 2003 protect the solar cells 2111 , ..., 2114 ; 2211 , ... 2214 ; 2311 , ..., 2314 against harmful environmental influences, especially moisture. The combination of front-side encapsulation layer 2002 , Solar cells 2111 , ... 2114 ; 2211 , ..., 2214 ; 2311 , ..., 2314 and backside encapsulation layer can also be referred to as a laminate.

An internal electrical connector 2062 is between the front encapsulation layer 2002 and the backside encapsulation layer 2003 arranged. With the electrical internal connector 2062 are the first solar cell series connection 2121 , 2122 , 2123 , 2124 and the second solar cell series circuit 2221 , 2222 , 2223 , 2224 connected in series. In particular, the internal electrical connector connects 2062 the solar cells 2124 and 2221 together.

The first bridging element 2151 and the second bridging element 2251 are on that of the front encapsulation layer 2002 remote side of the rear-side encapsulation layer 2003 arranged and having one on top of the front-side encapsulation layer 2002 remote side of the rear-side encapsulation layer 2003 arranged electrical external connector 2072 electrically connected to each other. By providing the external electrical connector 2072 and the internal electrical connector 2062 can be the number of lead-throughs required 2081 , 2082 , 2085 , 2086 through the backside encapsulation layer 2003 be reduced. In the 2 are four such implementations 2081 , 2082 , 2085 , 2086 shown. However, it is also conceivable to lead two electrical connections through only a single bushing. For example, the implementation 2081 , 2082 can be summarized in a single implementation.

The solar cell module 20000 has one on top of the front side encapsulation layer 2002 remote side of the rear-side encapsulation layer 2003 arranged junction box 2091 on, the first bridging element 2151 and the second bridging element 2251 in the junction box 2091 are arranged.

Next, the solar cell module 2000 a bridging element 2351 on, which is parallel to the solar cell series circuit 2321 , 2322 , 2323 , 2324 is switched. The bridging element 2351 is with another electrical external connector 2073 with the second bridging element 2251 connected. Next is the solar cell series circuit 2321 , 2322 , 2323 , 2324 by means of an internal electrical connector 2063 with the second solar cell series circuit 2221 , 2222 , 2223 , 2224 electrically connected. The electrical internal connector 2063 is in turn between the front-side encapsulation layer 2002 and the backside encapsulation layer 2003 arranged.

Finally, the solar cell module 2002 connections 2071 and 2074 with which it can be connected to a power grid. The connections 2071 and 2074 are also using the junction box 2091 provided. To protect the laminate, there is a front side glass on the side of the front side encapsulation layer facing away from the rear side encapsulation layer 2001 arranged. Likewise, on the front-side encapsulation layer 2002 remote side of the rear-side encapsulation layer 2003 a back glass or a back reinforcement 2004 be arranged. In that case, the first bridging element can in particular 2151 and / or the second bridging element 2251 and / or the third bridging element 2351 on that of the backside encapsulation layer 2003 facing away from the rear side glass or the rear side reinforcement 2004 be arranged.

The solar cell module 2000 further instructs the solar cell series circuit 2111 , 2112 , 2113 , 2114 on, which can also be referred to as the third solar cell series circuit. The third solar cell series circuit 2111 , ..., 2114 is with the first solar cell series circuit 2121 , ... 2124 connected in parallel. In the in the 1 The embodiment shown is the parallel connection by means of electrical internal connectors which are located between the front-side encapsulation layer 2002 and the backside encapsulation layer 2003 are arranged, realized.

In the in the 1 The illustrated embodiment, the solar cells are half cells. In principle, however, it is also conceivable to use full cells or quarter cells as solar cells for the solar cell module shown 2000 to use. In principle, multiple divided cells can also be used.

The solar cell module 2000 knows how in the 2 and 3 is shown a solar cell module frame 2900 on. The solar cells 2111 , ...., 2114 , 2211 , ...., 2214 , 2311 , ..., 2314 , 2121 , ...., 2124 , 2221 , ...., 2224 , 2321 , ..., 2324 , the backside encapsulation layer 2003 and the front encapsulation layer 2002 form a laminate. The laminate is in the solar cell module frame 2900 held. Next, the solar cell module 2000 an indicator 2900 for solar cell module data. In the In the 1 to 3 The embodiment shown is the indicator 2910 on the front side 2931 in the solar cell module frame 2900 integrated. However, it is also conceivable to use the indicator 2910 on an outside 2932 or a rear side of the solar cell module frame 2900 to arrange. The arrangement of the indicator 2910 on the front side it can allow this even when the solar cell module is installed 2000 can be read or read out quickly. If the indicator 2910 on an outside 2932 of the solar cell module frame 2900 is arranged, a more visually appealing impression of the solar cell module can result 2000 surrender. When attaching the indicator 2910 on the outside 2932 of the solar cell module frame 2900 can be the part of the solar cell module frame that is visible from the front and / or rear 2900 be minimized. This can maximize the area of the solar cell module that can be used to generate electricity 2000 in relation to the total area of the solar cell module 2000 enable.

The integration of the indicator 2910 In the solar cell module frame, the effort for the production of the solar cell module 2000 compared to conventional solar cell modules, in which the indicator is stuck to the back of the laminate as an adhesive label.

The indicator 2910 can in particular on the solar cell module frame 2900 be printed. in the present case is the indicator 2910 by means of laser engraving in the solar cell module frame 2900 integrated. This enables permanent readability even if the solar cell module frame is weathered 2900 be made possible.

The indicator includes a QR code 2912 , with which the solar cell module data can be read out by machine. The solar cell module data can in particular include information on electrical power (nominal, maximum) and / or on electrical voltage (nominal, maximum, minimum) and / or on current (nominal, maximum). The solar cell module data can also indicate whether and according to which standards the solar cell module 2000 has been specified. Typically, the solar cell module data can also include information about the manufacturer and / or the time of manufacture (eg, date of manufacture, batch number, serial number) and / or the place of manufacture. In particular, the indicator can contain data that are listed in the standards IEC 61370-1 or UL 61730-1. In addition, the solar cell module data can also contain mechanical information about the solar cell module 2000 include. It is conceivable that the solar cell module data are encoded directly as a QR code. However, the QR code can also contain an indication of where the relevant data can be accessed, for example on a server or in the cloud. The solar cell module data for several solar cell modules can also be provided as separate files, for example as a download or in the form of a USB stick, and the QR code can allow a link to be made from the solar cell module at hand 2000 to the associated solar cell module data.

Alternatively, it is also conceivable that the indicator 2910 has an RFID tag or an NFC transponder instead of or in addition to a QR code.

Alternatively or in addition, the indicator 2910 also a section 2911 that can be read without technical aids.

In summary, several variants of a solar cell module are proposed. Variants of the solar cell module are characterized by an indicator with higher resistance to harsh environmental influences. In addition, the manufacturing outlay for the solar cell modules described can be reduced compared to known solar cell modules.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2015/001413 A1 [0002]

Claims (13)

Solar cell module (2000) with one or more solar cells (2121, ...., 2124, 2221, ..., 2224), with a front-side encapsulation layer (2002), with a backside encapsulation layer (2003), wherein the solar cells are arranged between the front-side encapsulation layer (2002) and the rear-side encapsulation layer (2003), and wherein the solar cells (2121, ...., 2124, 2221, ..., 2224), the front-side encapsulation layer (2002) and the rear-side encapsulation layer (2003) form a laminate, with a solar cell module frame (2900), wherein the laminate is held in the solar cell module frame (2900), with an indicator (2910) for solar cell module data, wherein the indicator (2910) is integrated in the solar cell module frame (2900). Solar cell module (2000) according to Protection claim 1 wherein the indicator (2910) is printed on the solar cell module frame (2900). Solar cell module (2000) according to Protection claim 1 , wherein the indicator (2910) is integrated into the solar cell module frame (2900) by means of laser engraving. Solar cell module (2000) according to one of the Protection claims 1 to 3 wherein the indicator (2910) comprises a QR code (2912). Solar cell module (2000) according to one of the Protection claims 1 to 4th wherein the indicator (2910) comprises an RFID tag or NFC transponder. Solar cell module (2000) according to one of the Claims 1 to 5 wherein a rear side glass (2004) or a rear side reinforcement (2004) is arranged on the side of the rear side encapsulation layer (2003) facing away from the front side encapsulation layer (2002). Solar cell module (2000) according to one of the Protection claims 1 to 6th wherein a front side glass (2001) is arranged on the side of the front side encapsulation layer (2002) facing away from the rear side encapsulation layer (2003). Solar cell module (2000) according to one of the Protection claims 1 to 7th wherein the solar cell module (2000) is set up to generate electricity both when light passes through the front-side encapsulation layer (2002) and when light passes through the rear-side encapsulation layer (2003). Solar cell module (2000) according to one of the Protection claims 1 to 8th wherein the indicator (2910) cannot be detached from the solar cell module frame (2900) in a non-destructive manner. Solar cell module (2000) according to one of the Protection claims 1 to 9 , the laminate being devoid of any adhesive label. Solar cell module system comprising a solar cell module (2000) according to one of Protection claims 1 to 10 , a data memory for storing solar cell module data, a read-out unit, the read-out unit being set up to - read out the indicator (2910) of the solar cell module (2000), - retrieve the associated solar cell module data from the data memory, and - display the solar cell module data. Solar cell module system according to Claim to protection 11 , wherein the read-out unit comprises the data memory. Solar cell module system according to Claim to protection 11 , wherein the data memory is arranged separately from the read-out unit, the read-out unit being set up to call up the data memory via a wireless connection.

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