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1.发明公开公开(公告)号：US20240363790A1
公开(公告)日：2024-10-31
申请号：US18765993
申请日：2024-07-08
发明人： Gang CHEN , Wenli XU , Kaifu QIU , Yongqian WANG , Xinqiang YANG
CPC分类号： H01L31/1868 , H01L31/0516
摘要： A solar cell includes a silicon substrate, a first doped region, and a second doped region. The first doped region includes a first passivated contact region on the silicon substrate and a second passivated contact region on the first passivated contact region. The first passivated contact region includes a first doped layer, a first passivation layer, and a second doped layer. The second passivated contact region includes a second passivation layer and a third doped layer. The second doped region includes a third passivation layer. Each of the first and third passivation layers includes a porous structure. One of the first and second doped regions is a P-type doped region, the other of the first and second doped regions is an N-type doped region, and a hole density of a corresponding passivation layer in the P-type doped region is greater than that in the N-type doped region.
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公开(公告)号：US20240339551A1
公开(公告)日：2024-10-10
申请号：US18580499
申请日：2022-06-28
发明人： Loris BARRAUD , Pierre PAPET
IPC分类号： H01L31/05
CPC分类号： H01L31/0516
摘要： An interdigitated back contact photovoltaic device includes a substrate having a structured layer with first and second doped structures. The substrate is divided, by a virtual axis in a first portion and a second portion. The first portion and second portion includes, arranged on the first-type structures and second type structures, electrical contacts that are aligned according to parallel first and second columns defining alternating negative and positive polarities. Each electrical contact of the columns of the first portion has a polarity opposite that of the electrical contacts of facing collinear columns of the second portion. The first and second portions include at least one non-rectangular corner. Also disclosed are resized photovoltaic devices that are the photovoltaic devices separated in two halves, and to modules that include the resized photovoltaic devices, as well as a method to realize the photovoltaic devices, the resized photovoltaic devices and the photovoltaic modules.
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公开(公告)号：US11984522B2
公开(公告)日：2024-05-14
申请号：US16623872
申请日：2018-05-07
IPC分类号： H01L31/068 , H01L31/05 , H01L31/18
CPC分类号： H01L31/0682 , H01L31/0516 , H01L31/186
摘要： A backside contact solar cell has, on a first main surface of a crystal silicon substrate, a p-type region having a p-conductive type and an n-type region having an n-conductive type, and a positive electrode formed on the p-type region and a negative electrode formed on the n-type region, wherein the positive electrode includes a laminated conductor of a first electric conductor which is formed on the p-type region and which includes a group III element and a second electric conductor which is laminated on the first electric conductor and which has a lower content ratio of the group III element than the first electric conductor, and the negative electrode includes the second electric conductor formed on the n-type region. In this way, a low-cost backside contact solar cell has a high photoelectric conversion efficiency.
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公开(公告)号：US20240145607A1
公开(公告)日：2024-05-02
申请号：US18405720
申请日：2024-01-05
发明人： RICHARD HAMILTON SEWELL , MATTHIEU MINAULT REICH , ANDREA R. BOWRING , ARBAZ SHAKIR , RYAN REAGAN , MATTHEW MATSUMOTO
CPC分类号： H01L31/0504 , H01L31/0516 , H01L31/188
摘要： Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a string of solar cells includes a plurality of back-contact solar cells, wherein each of the plurality of back-contact solar cells includes P-type and N-type doped diffusion regions. A plurality of conductive wires is disposed over a back surface of each of the plurality of solar cells, wherein each of the plurality of conductive wires is substantially parallel to the P-type and N-type doped diffusion regions of each of the plurality of solar cells. One or more of the plurality of conductive wires adjoins a pair of adjacent solar cells of the plurality of solar cells and has a relief feature between the pair of adjacent solar cells.
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公开(公告)号：US20240088306A1
公开(公告)日：2024-03-14
申请号：US18091260
申请日：2022-12-29
发明人： Yuncheng CAO , Yingli GUAN , Shiliang HUANG , Zhiqiu GUO , Jianghai DU
IPC分类号： H01L31/02 , H01L31/0224 , H01L31/0236 , H01L31/05 , H01L31/068 , H01L31/18
CPC分类号： H01L31/0201 , H01L31/022441 , H01L31/02366 , H01L31/0516 , H01L31/0682 , H01L31/1804
摘要： Disclosed is solar cell, a photovoltaic module, and a method for manufacturing a photovoltaic module. The solar cell includes a substrate, first busbars and second busbars arranged on the substrate, first fingers connected to the first busbars, and second fingers connected to the second busbars. The first busbars and the second busbars have opposite polarities. The first fingers have a same polarity as the first busbars, and the second fingers have a same polarity as the second busbars. The substrate is provided with busbar pits. At least part of the first and second busbars are located in the busbar pits. Depths of the busbar pits range from 30 μm to 50 μm. Along a thickness direction of the substrate, ratios of the depths of the busbar pits to heights of the first busbars and/or the second busbars range from 10:3 to 6:5.
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公开(公告)号：US11876146B2
公开(公告)日：2024-01-16
申请号：US18333238
申请日：2023-06-12
发明人： Shigeng Chen , Yonggang Wu , Yong Yang , Qifei Ge , Zhuozhen Han
IPC分类号： H01L31/18 , H01L31/048 , H01L31/05
CPC分类号： H01L31/1876 , H01L31/0481 , H01L31/0512 , H01L31/0516 , H01L31/1804
摘要： A method for fabricating a photovoltaic (PV) module, including: (1) covering a polymer material on the side of the crystalline silicon solar cell attached with a solder ribbon followed by heating to allow bonding of the solder ribbon to the crystalline silicon solar cell, so as to obtain a solar cell module; (2) assembling several solar cell modules into a solar cell string, and connecting multiple solar cell strings to form a solar cell array; (3) laying sealing plates respectively on the front and back sides of the solar cell array to form a stacked body; and (4) subjecting the stacked body to lamination achieve an ohmic contact between the solder ribbon and the grid line, and transformation of the polymer material into a filler layer. This application further provides a PV module fabricated by such method, a solar cell module and a solar cell string.
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7.发明授权公开(公告)号：US11810985B2
公开(公告)日：2023-11-07
申请号：US17585780
申请日：2022-01-27
申请人： KANEKA CORPORATION
发明人： Junichi Nakamura
IPC分类号： H01L31/0224 , H01L31/05 , H01L31/18
CPC分类号： H01L31/022458 , H01L31/0508 , H01L31/0516 , H01L31/1884
摘要： A method for manufacturing a solar cell comprising forming a series of transparent electrode layer material films on electroconductive semiconductor layers on the reverse surface side of a substrate; forming metal electrode layers on the transparent electrode layer material films; forming insulation layers covering the entirety of the metal electrode layers except for a first non-insulation region, and insulation layers covering the entirety of the metal electrode layers excluding a second non-insulation region; and forming patterned transparent electrode layers and leaving the insulation layers using an etching technique in which the insulation layers are masks. In the insulation layer formation, the first non-insulation region positioned on a first straight line extending in a first direction is formed in the insulation layers, and the second non-insulation region positioned on a second straight line, different from the first straight line, extending in the first direction is formed in the insulation layers.
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公开(公告)号：US11791431B2
公开(公告)日：2023-10-17
申请号：US17951076
申请日：2022-09-22
申请人： Zhejiang Aiko Solar Energy Technology Co., Ltd. , Guangdong Aiko Solar Energy Technology Co., Ltd. , Tianjin Aiko Solar Energy Technology Co., Ltd.
IPC分类号： H01L31/05
CPC分类号： H01L31/0516 , H01L31/0512
摘要： A back contact solar cell string includes at least two cell pieces, each cell piece including P-type doped regions and N-type doped regions that are alternately arranged, the P-type doped regions including positive electrode thin grid lines, and the N-type doped regions including negative electrode thin grid lines; and a plurality of conductive wires connected to the positive electrode thin grid lines and the negative electrode thin grid lines. The conductive regions configured for electrical connection between each conductive wire and the positive electrode thin grid lines or the negative electrode thin grid lines and insulation regions configured for insulating connection between each conductive wire and the negative electrode thin grid lines or the positive electrode thin grid lines are alternately disposed at joints between each conductive wire and the positive electrode thin grid lines, and at joints between each conductive wire and the negative electrode thin grid lines.
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9.发明公开公开(公告)号：US20230327046A1
公开(公告)日：2023-10-12
申请号：US18333238
申请日：2023-06-12
发明人： Shigeng CHEN , Yonggang WU , Yong YANG , Qifei GE , Zhuozhen HAN
IPC分类号： H01L31/18 , H01L31/05 , H01L31/048
CPC分类号： H01L31/1876 , H01L31/0516 , H01L31/0481 , H01L31/0512 , H01L31/1804
摘要： A method for fabricating a photovoltaic (PV) module, including: (1) covering a polymer material on the side of the crystalline silicon solar cell attached with a solder ribbon followed by heating to allow bonding of the solder ribbon to the crystalline silicon solar cell, so as to obtain a solar cell module; (2) assembling several solar cell modules into a solar cell string, and connecting multiple solar cell strings to form a solar cell array; (3) laying sealing plates respectively on the front and back sides of the solar cell array to form a stacked body; and (4) subjecting the stacked body to lamination achieve an ohmic contact between the solder ribbon and the grid line, and transformation of the polymer material into a filler layer. This application further provides a PV module fabricated by such method, a solar cell module and a solar cell string.
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公开(公告)号：US20230327035A1
公开(公告)日：2023-10-12
申请号：US18022691
申请日：2020-11-04
IPC分类号： H01L31/05 , H01L31/0216
CPC分类号： H01L31/0508 , H01L31/0516 , H01L31/02164
摘要： An interconnection piece (200) and a solar cell assembly, which relate to the technical field of photovoltaics and which ensure the normal interconnection of cell pieces, while also inhibiting the degree of deformation of back contact cells during welding. The interconnection piece (200) includes a flexible insulation substrate (210) and a plurality of structural welding strips (220) that are spaced apart on the flexible insulation substrate (210). Each structural welding strip (220) is provided with two welding portions and a connecting portion (221) located between the two welding portions. The connecting portions (221) are connected to two welding portions, respectively. At least part of each connecting portion (221) is located in the flexible insulation substrate (210), and the two welding portions extend out of the flexible insulation substrate (210). The solar cell assembly includes the interconnection piece (200) mentioned above.
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