ENERGÍA SOLAR FOTOVOLTAICA

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Resultados 116 resultados LastUpdate Última actualización 28/05/2020 [00:54:00] pdf PDF xls XLS

Solicitudes publicadas en los últimos 15 días / Applications published in the last 15 days



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CIGS BASED THIN-FILM SOLAR CELLS ON METAL SUBSTRATE

NºPublicación: EP3655996A1 27/05/2020

Solicitante:

TATA STEEL NEDERLAND TECH BV [NL]

WO_2019016325_PA

Resumen de: WO2019016325A1

This invention relates to Cu(In,Ga)Se2(CIGS)-based thin-film solar cells and a method to produce such solar cells. The (CIGS)-based thin-film solar cell comprises a mild steel substrate (1) having a thickness of between 0.025 and 3.0 mm coated on at least one side with a nickel layer (2) on top thereof and a chromium layer (3) on top of the nickel layer to form a coated mild steel substrate (4), the nickel and chromium layers jointly forming a barrier layer, wherein the coated mild steel substrate is further coated with a CIGS-based solar cell comprising: a) a molybdenum back contact layer (5) b) a CIGS active layer (6) c) an n-type semiconductor layer such as a CdS or a ZnS layer (7) d) a transparent conductive oxide (TCO) layer (8), wherein the nickel layer thickness is between 0.25 and 5.5 µm, and the chromium layer thickness is between 0.01 and 0.30 µm.

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PEROVSKITE SOLAR BATTERY AND TANDEM SOLAR BATTERY INCLUDING SAME

NºPublicación: EP3657554A1 27/05/2020

Solicitante:

LG ELECTRONICS INC [KR]

KR_20190010197_A

Resumen de: EP3657554A1

The present invention relates to a perovskite solar battery and a tandem solar battery including the same and, more particularly, to a perovskite solar battery, which can ensure reliability and large area uniformity, and a tandem solar battery. According to the present invention, provided are the perovskite solar battery and the tandem solar battery including the same, the perovskite solar battery facilitating reliability and a band gap control by respectively applying a p-type Si thin film layer and an n-type Si thin film layer to a hole transport layer and an electron transport layer, and thus a lifespan and light conversion efficiency can increase.

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METHOD FOR CONTROLLING THE ORIENTATION OF A SOLAR TRACKER BASED ON MAP MODELS

NºPublicación: EP3657294A1 27/05/2020

Solicitante:

NEXTRACKER INC [US]

CN_107710098_A

Resumen de: WO2017001791A1

The invention relates to a method for controlling the orientation of a single-axis solar tracker (1) that can be oriented about an axis of rotation (A), in which successive control phases are carried out in a repeated manner. According to the invention, the following successive steps are performed in each control phase: a) observing the cloud cover above the solar tracker (1); b) comparing the cloud cover observed with cloud cover models stored in a database, each cloud cover model being associated with an orientation set point value for the solar tracker; c) matching the cloud cover observed with a cloud cover model; and d) controlling the orientation of the solar tracker by applying the orientation set point value to the cloud cover model selected in step c). The present invention is suitable for use in the field of solar trackers.

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STABILIZED SHINGLED SOLAR CELL STRINGS AND METHODS FOR THEIR PRODUCTION

NºPublicación: EP3655998A1 27/05/2020

Solicitante:

MEYER BURGER SWITZERLAND AG [CH]

KR_20200030093_A

Resumen de: WO2019016118A1

The present invention is directed to solar cell strings comprising (i) a string of solar cells (3a, 3b) shingled in string direction, resulting in positive and negative electrode overlap, (ii) an interconnect (5a, 5b) for electrically connecting the positive and negative electrodes of the shingled solar cells, and (iii) an adhesive foil (6) spanning at least part of the string and positioned on (a) the top (sun facing) sides of the at least two shingled solar cells, and/or (b) the bottom (far) sides of the at least two shingled solar cells, or on (c) the top side of one solar cell and on the bottom side of the overlapping solar cell, in which case the adhesive foil comprises the interconnect and connects the overlap in order to mechanically connect and position the shingled solar cells. In addition, the present invention relates to a method for producing such solar cell strings.

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PHOTOVOLTAIC DEVICE COMPRISING AT LEAST ONE COATING LAYER ON AT LEAST ONE PHOTOVOLTAIC MODULE WITH WEAR INDICATOR

NºPublicación: EP3657551A1 27/05/2020

Solicitante:

COMMISSARIAT ENERGIE ATOMIQUE [FR]

Resumen de: EP3657551A1

L'objet principal de l'invention est un dispositif photovoltaïque (10), comportant : un ou plusieurs modules photovoltaïques (1), chaque module photovoltaïque (1) comportant une première couche (2) transparente formant la face avant, destinée à recevoir un flux lumineux, une pluralité de cellules photovoltaïques (4), un ensemble encapsulant (3) la pluralité de cellules photovoltaïques (4), et une deuxième couche (5) formant la face arrière ; au moins une couche de revêtement (7) disposée sur la première couche (2) du ou de chaque module photovoltaïque (1), le dispositif photovoltaïque (10) comportant au moins un indicateur d'usure (11) intégré dans ladite au moins une couche de revêtement (7) et visible au travers de ladite au moins une couche de revêtement (7).

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PHOTOVOLTAIC DEVICE COMPRISING AT LEAST A COATING LAYER WHICH CAN BE SANDED ON AT LEAST A PHOTOVOLTAIC MODULE

NºPublicación: EP3657552A1 27/05/2020

Solicitante:

COMMISSARIAT ENERGIE ATOMIQUE [FR]

Resumen de: EP3657552A1

L'objet principal de l'invention est un dispositif photovoltaïque (10), comportant : un ou plusieurs modules photovoltaïques (1), chaque module photovoltaïque (1) comportant une première couche (2) transparente formant la face avant, destinée à recevoir un flux lumineux, une pluralité de cellules photovoltaïques (4), un ensemble encapsulant (3) la pluralité de cellules photovoltaïques (4), et une deuxième couche (5) formant la face arrière ; au moins une couche de revêtement (7) disposée sur la première couche (2) du ou de chaque module photovoltaïque (1), ladite au moins une couche de revêtement (7, 7a, 7b) étant ponçable, le ou les matériaux de ladite au moins une couche de revêtement (7, 7a, 7b) étant différent(s) du ou des matériaux de la première couche (2) du ou de chaque module photovoltaïque (1), ladite au moins une couche de revêtement (7, 7a, 7b) comportant un matériau polymère thermodurcissable, et présentant une épaisseur comprise entre 500 µm et 2 cm.

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SOLAR CELL MODULE WITH INTERCONNECTION OF NEIGHBORING SOLAR CELLS ON A COMMON BACK PLANE

NºPublicación: EP3657553A1 27/05/2020

Solicitante:

SOLAERO TECH CORP [US]

EP_3136449_A1

Resumen de: EP3657553A1

A solar cell assembly or module comprising a plurality of solar cells mounted on a support, the support comprising a plurality of conductive vias extending from the top surface to the rear surface of the support. Each one of the plurality of solar cells is placed on the top surface with the first contact of a first polarity of the solar cell electrically connected to the first conductive via. A second contact of a second polarity of each solar cell can be connected to a second conductive via so that the first and second conductive portions form terminals of opposite conductivity type. The solar cells on the module can be interconnected to form a string or an electrical series and/or parallel connection by suitably interconnecting the terminal pads of the vias on the back side of the module.

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INTEGRATED MICRO-LENS FOR PHOTOVOLTAIC CELL AND THERMAL APPLICATIONS

NºPublicación: EP3655999A1 27/05/2020

Solicitante:

UNIV MICHIGAN REGENTS [US]
DEMETRA ENERGIA SRL [IT]

US_2019027629_A1

Resumen de: WO2019018648A1

A design for a micro-lens (i.e., a lens on the scale of micrometers) incorporates existing nanofabrication techniques and can be incorporated into High Concentrating Photovoltaic (HCPV), solar thermal collectors, and traditional flat PV systems. Using the theory of wave optics, the design is able to achieve a high numerical aperture, i.e., it can receive light over a wider range of angles. The design also reduces the distance the focal point shifts as the light source shifts; this eliminates the need for a tracking system in CPV and PV applications. Reducing the lens size also facilitates smaller, lightweight CPV systems, which makes CPV attractive for additional applications. Finally, these concentrators reduce the exchanging area of a typical flat solar thermal system where heat is received, which improves the overall system's efficiency and allows its use also during rigid winter time.

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METHOD FOR PRODUCING PERT SOLAR CELLS

NºPublicación: EP3655995A1 27/05/2020

Solicitante:

INTERNATIONAL SOLAR ENERGY RES CENTER KONSTANZ E V [DE]

CN_110870082_A

Resumen de: WO2019015827A1

The invention relates to a method for producing PERT solar cells (10), having the steps of providing an n-doped or p-doped silicon substrate (1), carrying out a first doping process, by means of which at least one side of the silicon substrate (1) is doped or at least one doped layer is applied to one side of the silicon substrate (1), in order to create a first doped side, precipitating at least one substance (5) passivating or masking the surface at least on the first doped side of the PERT solar cell (10), carrying out a second doping process, by means of which at least the other side of the silicon substrate (1), opposite the first doped side, is doped, or a doped layer is applied thereto, wherein, after carrying out said steps, the edges (11, 12) of the PERT solar cell (10) are wet chemical etched, wherein, during the wet chemical etching, the other side of the PERT solar cell (10), opposite the first doped side, is protected by a water cover (4) and the first doped side of the PERT solar cell is protected by the substance (5) passivating or masking the surface and sintered by a high temperature treatment before the wet chemical etching of the edges (11, 12).

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Photovoltaic module

NºPublicación: EP3655997A1 27/05/2020

Solicitante:

TNO [NL]

US_2020161487_A1

Resumen de: NL2019318B1

A photovoltaic module having one or more photovoltaic cells (2) positioned in a space between a front sheet (4) and a back sheet (5), the space being filled with an encapsulant material (6). The photovoltaic module (1) has a plurality of ribbons (3) providing an electrical interconnection ofthe one or more photovoltaic cells (2). A single visible-light absorbing layer (7) is present having a pattern which includes partial areas aligned with the plurality of ribbons (3). The partial areas have a width (w + e) which is equal to a width (w) of the associated ribbon (3) plus a symmetrically applied extension width (e). The extension width (e) and height (h) are determined according to the equation: 2h w + e < tan(90 _ s-m— 1(1/nE)) wherein n5 is the refractive index ofthe encapsulant material (6). The single visible-light absorbing layer (7) is provided on an internal face ofthe front sheet (4). [Fig. 6A]

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PACKAGING FOR SOLAR ROOF TILES

NºPublicación: EP3656053A1 27/05/2020

Solicitante:

TESLA INC [US]

CN_111095786_A

Resumen de: WO2019018355A1

One embodiment provides a solar roof tile module. The module includes a plurality of solar roof tiles positioned side by side and one or more tile spacers. The tiles are electrically and mechanically coupled to each other. A tile spacer is positioned between two adjacent solar roof tiles, thereby preventing water leakage. A solar roof tile can include a front cover, a back cover, and a plurality of photovoltaic strips positioned between the front and back covers. Each photovoltaic strip includes a first edge busbar located on an edge of a first surface and a second edge busbar located on an opposite edge of a second surface, and the photovoltaic strips are arranged in such a way that the first edge busbar of a photovoltaic strip overlaps with a second edge busbar of an adjacent photovoltaic strip, thereby forming a serial connection among the photovoltaic strips.

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PHOTOVOLTAIC STRING COMBINER BOX WITH PROTECTION FUNCTIONS

NºPublicación: WO2020099157A1 22/05/2020

Solicitante:

EATON INTELLIGENT POWER LTD [IE]

Resumen de: WO2020099157A1

A photovoltaic string combiner box (PVB) with protection functions comprises a plurality of input connections (10, 20, 30) respectively having first and second input terminals (11, 12, 21, 22, 31, 32) to connect a plurality of photovoltaic strings (1, 2, 3) to the combiner box (PVB), a plurality of disconnectors (16, 26, 36) respectively arranged in each of current lines (13, 23, 33). The photovoltaic string combiner box (9) further comprises a plurality of controllable switches (42, 44, 46) being connected to the plurality of input connections (10, 20, 30) to short-circuit a respective one of the first and second input terminals (11, 12, 21, 22, 31, 32). A controllable network (40) is arranged in a common current line (50) to provide a nearly currentless operating of the disconnectors (16, 26, 36).

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SYSTEM AND METHOD FOR COOLING PHOTOVOLTAIC PANEL WITH ATMOSPHERIC WATER

NºPublicación: WO2020099950A1 22/05/2020

Solicitante:

UNIV KING ABDULLAH SCI & TECH [SA]

Resumen de: WO2020099950A1

An integrated photovoltaic (PV) panel-water sorption layer system (100) that includes a PV panel (110) having a front face (110A) that is configured to receive solar light for generating electrical current, and a back face (110B) that is opposite to the front face (110A); and an atmospheric water harvesting device (130) attached to the back face (110B) of the PV panel (110). The atmospheric water harvesting device (130) is configured to cool down the PV panel (110) by evaporating absorbed atmospheric water based on heat received from the PV panel (110).

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SOLAR POWER GENERATOR

NºPublicación: WO2020100181A1 22/05/2020

Solicitante:

KAZU CO LTD [JP]

Resumen de: WO2020100181A1

This solar power generator comprises: a base part that has a prescribed shape, and is placed on a flat surface; a plurality of leg-shaped support parts that are individually secured at prescribed intervals on the upper surface of the base part; solar panels that are respectively provided in an inclined state to the upper ends of rotating shafts of the leg-shaped support parts; wire-like synchronization means that are endlessly connected in overall configuration so as to be wound one or more times on the outer peripheral surface of each of the rotating shafts; one driving means that is provided to the base part, and has an actuation rod in which the projecting tip end thereof is connected to some of the wire-like synchronization means via a securing means; a control unit that is provided to the base part, and controls the extending and retracting of the actuation rod of the driving means; and non-slip members that respectively secure the winding sites of the wire-like synchronization means. The rotating shafts of three or more leg-shaped support parts simultaneously rotate to a prescribed extent in the circumferential direction of the corresponding leg-shaped support part via the wire-like synchronization means using the driving force provided by the driving means. Thus, it is possible to produce a power generator at low cost, and easily assemble the power generator on site in a short time.

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PHOTOVOLTAIC DEVICE AND METHOD OF MANUFACTURING THE SAME

NºPublicación: WO2020101494A1 22/05/2020

Solicitante:

TNO [NL]

EP_3654389_A1

Resumen de: WO2020101494A1

A photovoltaic device (1) is provided with plurality of mutually subsequent photovoltaic device cells (1A,..., 1F) arranged along a direction of first device axis (D1). Each pair of a photovoltaic device cell and its successor are serially arranged through an interface region (1CD), further having a bypass function, and which extends along a second axis (D2), transverse to the first axis.

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METHOD AND DEVICE FOR TRACKING MAXIMUM POWER POINT

NºPublicación: WO2020098337A1 22/05/2020

Solicitante:

HUAWEI TECH CO LTD [CN]

CN_109713714_A

Resumen de: WO2020098337A1

Provided are a method and device for tracking a maximum power point, for increasing the conversion efficiency of a control device in a photovoltaic power generation system, and reducing loss in electricity generation capacity. The method comprises: the control device adjusts an input voltage of the control device, the input voltage being generated and transmitted to the control device by one or more of photovoltaic components; determines whether the difference between a first input power and a second input power of the control device is less than or equal to a set value, where the first input power is the input power of the control device before the input voltage of the control device is adjusted, and the second input power is the input power of the control device after the input voltage of the control device is adjusted; if yes, increases the input voltage of the control device and returns to executing the determination of whether the difference between the first input power and the second input power of the control device is less than or equal to the set value; and if not, then returns to executing the adjustment of the input voltage of the control device.

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A CONTROLLER FOR A PHOTOVOLTAIC GENERATION AND ENERGY STORAGE SYSTEM

NºPublicación: WO2020097677A1 22/05/2020

Solicitante:

UNIV MELBOURNE [AU]

Resumen de: WO2020097677A1

A controller for energy storage and photovoltaic generation system comprising a photovoltaic generator and a battery. During a first time period beginning after the photovoltaic generator stops generating energy, to gradually export energy in excess of demand to a distribution network so that the battery reaches a defined minimum stored energy by the beginning energy storage period; control relative proportions of energy generated by the photovoltaic generator in excess of demand that are stored by the battery and exported to the distribution network during the energy storage period by determining a desired charging profile that has a gradient that follows the gradient of an estimated clear-sky photovoltaic generation profile of the photovoltaic generator, and if followed will result in the battery reaching a defined maximum stored energy by the end of the energy storage period, and controlling storage of energy in the battery in accordance with the desired charging profile.

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AIR PURIFICATION ENERGY-SAVING STREET LAMP AND CONTROL METHOD THEREFOR

NºPublicación: WO2020098319A1 22/05/2020

Solicitante:

XINGHUI LIGHTING ENG GROUP CO LTD [CN]

CN_109488969_A

Resumen de: WO2020098319A1

The present invention provides an air purification energy-saving street lamp and a control method therefor. The control method for the air purification energy-saving street lamp comprises the following steps: providing a solar power supply device, controlling the angle of a solar panel in the solar power supply device at different time, and using a storage battery in the solar power supply device to store electrical energy; providing a street lamp main body structure, monitoring an ambient luminance, a vehicle volume, and a pedestrian volume, turning on a light source when it is detected that the luminance is less than or equal to a preset luminance, and increasing the luminance of the light source when the vehicle volume is greater than or equal to a preset vehicle volume and the pedestrian volume is greater than or equal to a preset pedestrian volume; and providing a purification device, adsorbing PM2.5 by means of a filter layer in the purification device, comparing the concentration of PM2.5 in the air before and after purification, calculating an actual purification efficiency, and replacing the filter layer when the actual purification efficiency is less than a preset purification efficiency. The control method for the air purification energy-saving street lamp according to the present invention is able to integrate the illumination function, the purification function, and the energy-saving function.

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PHOTOVOLTAIC APPARATUS FOR PREPARATION FOR DISASTERS AND METHOD FOR MANAGING PHOTOVOLTAIC APPARATUS

NºPublicación: WO2020101118A1 22/05/2020

Solicitante:

BUM IL ELECTRICITY CO LTD [KR]
PARK DONG CHEOL [KR]

Resumen de: WO2020101118A1

The present invention relates to a photovoltaic apparatus for protection against disasters and a method for managing a photovoltaic apparatus. The photovoltaic apparatus comprises a solar panel comprising solar cells and a storage battery storing generated power. The solar panel is installed on the farmland or in the greenhouse and is for protection against disasters by using a sensor and a control unit. The storage battery, on which the solar panel of the photovoltaic apparatus is installed, is charged with the generated power, and by the storage battery, electricity is provided to a device that uses electricity. The solar panel is installed above plants on the farmland or in the greenhouse, and also, an angle-detecting sensor is installed on the solar panel, detects an inclination angle of the solar panel, and transmits the inclination angle to the control unit, and when the angle is greater than a specific inclination, the control unit determines that a disaster occurs and sends signals to an alarming device which then triggers an alarm. The present invention has remarkable effects in that a sensor is installed in a light-collecting panel of a solar cell to quickly respond to disasters, and by controlling the light-collecting panel of a solar cell installed on the farmland or in the greenhouse, solar photovoltaic energy is utilized and also, the growth of plants located thereunder is promoted.

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SPACE SEPARATION-TYPE BUS STOP HAVING FINE DUST REDUCTION SYSTEM

NºPublicación: WO2020101130A1 22/05/2020

Solicitante:

KLES INC [KR]

Resumen de: WO2020101130A1

The present invention relates to a system for reducing fine dust at a stop, which prevents passengers waiting at a public transportation stop in a heavy-traffic area from being exposed to emissions from vehicles and fine dust and, more specifically, to a space separation-type bus stop having a fine dust reduction system, comprising: a stop main body having a rear surface, left and right side surfaces, and a ceiling; an outer surface part including a fence for reducing fine dust and harmful gases, a sensor for measuring the degree of air pollution, a passenger flow sensor for measuring and monitoring the number of passengers, walking speeds, and position patterns when the passengers are not moving, and a plurality of diffusers for discharging purified air; and an air purification unit provided in the stop main body to purify air, wherein external air is introduced into the main body by using a blower by passing through an air inlet and a pre-filter, and the introduced air is purified through a filter device part and discharged through the diffusers, the air purification unit having a controller for controlling air purification and discharge at one side of the inner surface of the main body. As described above, the space separation-type bus stop having a fine dust reduction system according to the present invention discharges purified air to the inside of the stop to reduce fine dust inside the stop, thus protecting passengers waiting to board at the stop from air pollution gen

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OUTPUT VOLTAGE SUPPRESSION CIRCUIT AND SOLAR POWER GENERATION SYSTEM

NºPublicación: WO2020100198A1 22/05/2020

Solicitante:

MITSUBISHI ELECTRIC CORP [JP]

Resumen de: WO2020100198A1

An output voltage suppression circuit (30) for suppressing the output voltage (Vo) of a solar power generation system (1), wherein the output voltage suppression circuit (30) is provided with a plurality of thyristors (41), a plurality of switches (42), and a plurality of switch-closing control units (43). Each of the thyristors (41) is provided between the positive electrode terminal (12) and the negative electrode terminal (13) of the corresponding solar cell module (11) from among a plurality of solar cell modules (11). Each of the switches (42) is provided between the gate of the corresponding thyristor (41) from among the plurality of thyristors (41) and the positive electrode terminal (12) of the corresponding solar cell module (11) from among the plurality of solar cell modules (11). Each of the switch-closing control units (43) switches the corresponding switch (42) from among the plurality of switches (42) from an open state to a closed state.

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ENERGY TRANSMISSION SYSTEM INCLUDING ORBITING COMPONENTS

NºPublicación: WO2020101981A1 22/05/2020

Solicitante:

POLK CHARLES WILLIAM [US]

US_2020153287_A1

Resumen de: WO2020101981A1

Methods and systems for generating energy at a platform in orbit around a planet or a moon and beaming at least a portion of the generated energy to a user receiver. One of the methods includes: generating energy at an energy generating platform in orbit around a planet to produce generated energy; transmitting at least some of the generated energy from the energy generating platform to a relay platform in orbit around the planet, the energy generating platform transmitting at least some of the generated energy using at least one laser; and relaying, using the relay platform, at least some of the generated energy received from the energy generating platform to a user receiver.

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PASTE COMPOSITION

NºPublicación: WO2020100792A1 22/05/2020

Solicitante:

TOYO ALUMINIUM KK [JP]

Resumen de: WO2020100792A1

Provided is a paste composition for a rear surface passivation type solar battery characterized in that: the paste composition comprises a silicon free glass powder, an organic vehicle, and an aluminum powder; the content of the aluminum powder relative to 100 mass% of the paste composition is 65 to 75 mass%; and other than the silicon free glass powder, the paste composition does not contain any of inorganic carbonate, inorganic oxide, inorganic carbide, inorganic nitride, inorganic nitrate, inorganic sulfate, or organic metal alkoxide.

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SOLAR CELL MODULE AND PRODUCTION METHOD THEREFOR

NºPublicación: WO2020100528A1 22/05/2020

Solicitante:

KANEKA CORP [JP]

Resumen de: WO2020100528A1

This method is for producing a solar cell module that has a solar cell string (10) including a plurality of backside bonding-type solar cells (11) and being embedded in a sealing material layer, and that has a tab wire (13) electrically connected to string-end-side edge portions of solar cells (11) located at terminal ends of the solar cell string (10). The electrical connection between the tab wire (13) and the terminal solar cells (11) is established by performing heating on a light-receiving-side sealing material (21') which will constitute a portion located closer to the light-receiving side than the solar cell string in the sealing material layer.

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METHOD FOR DETECTING SIMULATION EFFICIENCY OF SOLAR PHOTOELECTRIC MODULE

Nº publicación: WO2020097934A1 22/05/2020

Solicitante:

EXTEL ENERGY CO LTD [CN]

Resumen de: WO2020097934A1

Disclosed is a method for detecting the simulation efficiency of a solar photoelectric module, comprising the following processes: measuring the actual power generation efficiency of the solar photoelectric module in an actual use condition (S101); calculating the best power generation efficiency of the solar photoelectric module in the actual use condition according to Formula (A): Q A=S×(F/1000)×[1-C×(T-T S)] (S102); calculating the efficiency ratio of the actual power generation efficiency to the best power generation efficiency of the solar photoelectric module according to Formula (B): W A=Q/Q A ( S103); and correcting, on the basis of a correction table, the described efficiency ratio at different light intensities so as to simulate the power generation efficiency ratio of the solar photoelectric module in a standard test condition (S104). In the described formulas, Q A denotes the best power generation efficiency in the actual use condition, S denotes the rated power, F denotes the measured light intensity, C denotes the power temperature coefficient, T denotes the actual temperature, T S denotes the standard temperature, W A denotes the efficiency ratio of the actual power generation efficiency to the best power generation efficiency of the solar photoelectric module, and Q denotes the actual power generation efficiency.

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