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    PHOTOVOLTAIC MODULE WITH INCREASED RESISTANCE AGAINST POTENTIAL INDUCED DEGRADATION
    2.
    发明申请
    PHOTOVOLTAIC MODULE WITH INCREASED RESISTANCE AGAINST POTENTIAL INDUCED DEGRADATION 有权

    公开(公告)号：US20230115380A1

    公开(公告)日：2023-04-13

    申请号：US17906377

    申请日：2021-03-08

    Applicant: BOREALIS AG

    Inventor： Stefan Hellstrom ,  Francis Costa ,  Bert Broeders ,  Jeroen Oderkerk ,  Denis Yalalov

    IPC: H01L31/048 ,  H01L31/049 ,  C08L23/08

    Abstract: The present invention relates to a photovoltaic module comprising a protective front layer element, an encapsulation layer element, a photovoltaic cell element and a protective back layer element, whereby at least one of theprotective elements comprises glass; wherein the encapsulation layer element comprises a polymer composition (I) comprising at least the following components: (A) 90 to 99.8 wt.-% based on the overall weight of the polymer composition (I) of a polymer selected from a polyolefin elastomer or a polymer of ethylene (a) selected from (a1) a copolymer of ethylene which bears functional groups containing units; (a2) a copolymerof ethylene comprising one or more polar comonomer unit(s) selected from (C1-C6)-alkyl acrylate or (C1-C6)-alkyl (C1-C6)-alkyl acrylate comonomer units, and optionally bears functional groups containing units different from said polar comonomer unit(s); (a3) a copolymer of ethylene comprising one or more alpha-olefin comonomer unit(s); and optionally bears functional groups containing units different fromsaid polar comonomer unit(s) of polymer (a2); or mixtures thereof; and (b) silane group(s) containing units; (B) 0.2 to 10 wt.-% based on the overall weight of the polymer composition (I) of a copolymer of ethylene, which bears functional group containing units originating from at least one unsaturated carboxylic acid and/or its anhydrides, metal salts, esters, amides or imidesand mixtures thereof, whereby component (B) is different from component (A) Furthermore, the present invention refers to the use of an encapsulation layer element comprising polymer composition (I) according to the invention for increasing the Pmax determined after 96 h according to IEC 60904, by applying the foil method with a temperature of 85° C. and relative humidity of 60% and a potential differenceof 1500 V, of a photovoltaic module comprising besides the encapsulation layer element a protective front layer element, a photovoltaic cell element and a protective back element, whereby at least one of the protective elements comprises glass.

    Photovoltaic module with increased resistance against potential induced degradation
    5.
    发明授权
    Photovoltaic module with increased resistance against potential induced degradation 有权

    公开(公告)号：US12071558B2

    公开(公告)日：2024-08-27

    申请号：US17914675

    申请日：2021-03-08

    Applicant: BOREALIS AG

    Inventor： Stefan Hellström ,  Francis Costa ,  Bert Broeders ,  Jeroen Oderkerk

    IPC: C09D123/08 ,  C08F210/02 ,  C08K5/3492 ,  C09D7/63 ,  H01L31/048 ,  H01L31/049

    CPC classification number: C09D123/0892 ,  C08F210/02 ,  C08K5/34926 ,  C09D7/63 ,  H01L31/0481 ,  H01L31/049 ,  C08F2800/10 ,  C08F2800/20

    Abstract: The present invention relates a photovoltaic module comprising a protective front layer element, an encapsulation layer element, a photovoltaic cell element and a protective back layer element, whereby at least one of the protective elements comprises glass; wherein the encapsulation layer element comprises a polymer composition (I) comprising at least the following components: (A) 97.00 to 99.99 wt.-% based on the overall weight of the polymer composition (I) of a polymer selected from an ethylene-vinylacetate copolymer, a polyolefin elastomer or a polymer of ethylene (a) selected from (a1) a copolymer of ethylene which bears functional groups containing units; (a2) a copolymer of ethylene comprising one or more polar comonomer unit(s) selected from (C1-C6)-alkyl acrylate or (C1-C6)-alkyl (C1-C6)-alkyl acrylate comonomer units, and optionally bears functional groups containing units different from said polar comonomer unit(s); (a3) a copolymer of ethylene comprising one or more alpha-olefin comonomer unit(s); and optionally bears functional groups containing units different from said polar comonomer unit(s) of polymer (a2); or mixtures thereof; and (b) silane group(s) containing units; (B) 0.01 to 3.00 wt.-% based on the overall weight of the polymer composition (I) of a compound according to Formula (I); wherein; R1, R1′, R2 and R2′ are each independently selected from the group consisting of hydrogen, n-alkyl, iso-alkyl, alkoxy, cycloalkyl, alkenyl, halogen and mixtures thereof; X is selected from the group consisting of primary amines, secondary amines, tertiary amines, hydrogen, alkyl, alkenyl and mixtures thereof. Furthermore, the present invention refers to the use of an encapsulation layer element comprising polymer composition (I) according to the invention for increasing the Pmax determined after 96 h according to IEC 60904, by applying the foil method with a temperature of 85° C. and relative humidity of 60% and a potential difference of 1500 V, of a photovoltaic module comprising besides the encapsulation layer element a protective front layer element, a photovoltaic cell element and a protective back element, whereby at least one of the protective elements comprises glass.

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