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1. WO2018152659 - BACK-CONTACT SOLAR CELL STRING AND PREPARATION METHOD THEREFOR, MODULE AND SYSTEM

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Publication Number WO/2018/152659
Publication Date 30.08.2018
International Application No. PCT/CN2017/000515
International Filing Date 10.08.2017
IPC
H01L 31/0224 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength, or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02Details
0224Electrodes
H01L 31/05 2014.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength, or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
04adapted as photovoltaic conversion devices
042PV modules or arrays of single PV cells
05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
H01L 31/18 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength, or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
CPC
H01L 31/022441
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
02Details
0224Electrodes
022408for devices characterised by at least one potential jump barrier or surface barrier
022425for solar cells
022441Electrode arrangements specially adapted for back-contact solar cells
H01L 31/0516
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
04adapted as photovoltaic [PV] conversion devices
042PV modules or arrays of single PV cells
05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
0504specially adapted for series or parallel connection of solar cells in a module
0516specially adapted for interconnection of back-contact solar cells
H01L 31/0682
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
04adapted as photovoltaic [PV] conversion devices
06characterised by at least one potential-jump barrier or surface barrier
068the potential barriers being only of the PN homojunction type, e.g. bulk silicon PN homojunction solar cells or thin film polycrystalline silicon PN homojunction solar cells
0682back-junction, i.e. rearside emitter, solar cells, e.g. interdigitated base-emitter regions back-junction cells
H01L 31/18
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
H01L 31/1804
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
31Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
18Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
1804comprising only elements of Group IV of the Periodic System
Y02E 10/547
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
10Energy generation through renewable energy sources
50Photovoltaic [PV] energy
547Monocrystalline silicon PV cells
Applicants
  • 泰州中来光电科技有限公司 JOLYWOOD (TAIZHOU) SOLAR TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 林建伟 LIN, Jianwei
  • 刘志锋 LIU, Zhifeng
  • 季根华 JI, Genhua
  • 章康平 ZHANG, Kangping
  • 刘勇 LIU, Yong
Agents
  • 北京金之桥知识产权代理有限公司 BEIJING GOLDEN BRIDGE IP AGENCY CO., LTD.
Priority Data
201710103098.724.02.2017CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) BACK-CONTACT SOLAR CELL STRING AND PREPARATION METHOD THEREFOR, MODULE AND SYSTEM
(FR) CHAÎNE DE CELLULES SOLAIRES À CONTACT ARRIÈRE ET SON PROCÉDÉ DE PRÉPARATION, MODULE ET SYSTÈME
(ZH) 一种背接触太阳能电池串及其制备方法和组件、系统
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Abstract
(EN) Disclosed are a back-contact solar cell string and a preparation method therefor, a module and a system. The back-contact solar cell string comprises back-contact solar cells and conductive members (50) for electrically connecting the back-contact solar cells. Segmented emitter electrodes (20) in emitter p+ areas (10) and segmented base electrodes (21) in base n+ areas (11) are arranged on back surfaces of the back-contact solar cells. Emitter metal wire electrodes (40) are arranged on the segmented emitter electrodes (20). Base metal wire electrodes (41) are arranged on the segmented base electrodes (21). Cell slices extend in opposite directions from the emitter metal wire electrodes (40) and the base metal wire electrodes (41). The emitter metal wire electrodes (40) of the back-contact solar cells, and the base metal wire electrodes (41) of the adjacent back-contact solar cells are electrically connected by means of the conductive members (50). The solar cell string and the preparation method therefor, the module and the system are simple to operate and do not require a high-precision alignment welding device, thereby reducing the transverse transmission loss, between electrodes, of carriers, increasing fill factors of cells and reducing a short-circuit current of the module and thus reducing the module packaging loss.
(FR) L'invention concerne une chaîne de cellules solaires à contact arrière et son procédé de préparation, un module et un système. La chaîne de cellules solaires à contact arrière comprend des cellules solaires à contact arrière et des éléments conducteurs (50) pour connecter électriquement les cellules solaires à contact arrière. Des électrodes émettrices segmentées (20) dans des zones p + émettrices (10) et des électrodes de base segmentées (21) dans des zones n + de base (11) sont agencées sur des surfaces arrière des cellules solaires à contact arrière. Des électrodes à fil métallique émettrices (40) sont disposées sur les électrodes émettrices segmentées (20). Des électrodes à fil métallique de base (41) sont disposées sur les électrodes de base segmentées (21). Des tranches de cellules s'étendent dans des directions opposées à partir des électrodes à fil métallique émettrices (40) et des électrodes à fil métallique de base (41). Les électrodes à fil métallique émettrices (40) des cellules solaires à contact arrière, et les électrodes à fil métallique de base (41) des cellules solaires à contact arrière adjacentes sont électriquement connectées au moyen des éléments conducteurs (50). La chaîne de cellules solaires et son procédé de préparation, le module et le système sont simples à utiliser et ne nécessitent pas de dispositif de soudage à alignement de haute précision, réduisant ainsi la perte de transmission transversale, entre des électrodes, de porteuses, augmentant les facteurs de remplissage de cellules et réduisant un courant de court-circuit du module et réduisant ainsi la perte d'emballage de module.
(ZH) 一种背接触太阳能电池串及其制备方法和组件、系统，包括背接触太阳能电池和用于背接触太阳能电池电连接的导电件(50)，背接触太阳能电池的背表面设置了发射极p+区域(10)的发射极分段电极(20)和基极n+区域(11)基极分段电极(21)，发射极分段电极(20)上设置有发射极金属丝电极(40)，基极分段电极(21)上设置有基极金属丝电极(41)，发射极金属丝电极(40)和基极金属丝电极(41)反向延伸出电池片，背接触太阳能电池的发射极金属丝电极(40)与相邻背接触太阳能电池的基极金属丝电极(41)通过导电件(50)电连接。该太阳能电池串及制备方法和组件、系统操作简单、无需高精度的对准焊接设备，减少了载流子在电极之间的横向传输损耗，提高了电池的填充因子，降低了组件的短路电流从而降低了组件封装损耗。
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