Abstract

A back-passivated solar battery and a manufacturing method therefor. The manufacturing method comprises: after an antireflective film is prepared on a silicon chip, first, forming a back surface field provided with a hollow pattern; then, forming a back-passivated layer; and then, forming a positive electrode. By way of forming the back surface field prior to the back-passivated layer, the step of laser grooving is omitted and the damage of the laser grooving to the silicon chip is avoided. The back surface field is a hollow structure which reduces the contact area with the back-passivated layer and reduces the erosion degree of the back surface field on the back-passivated layer, so as to enable the back-passivated layer to better play a passivating role, thereby reducing the carrier recombination of the back surface of the battery, all of which can ultimately improve the conversion efficiency of the back-passivated solar battery.

IPC Classes  ?

• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• H01L 31/068 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices characterised by at least one potential-jump barrier or surface barrier the 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
• H01L 31/0224 - Electrodes

Abstract

A back contact solar battery and a method of preparing a back contact solar battery. The method of preparing a back contact solar battery comprises: providing a first mould slide boat that comprises a first film growing area and a first shielding area that are arranged alternatively and a second mould slide boat that comprises a second film growing area and a second shielding area that are arranged alternatively, the first film growing area being corresponding to the second shielding area, and the second film growing area being corresponding to the first shielding area; and then forming, on a surface, with a passivation layer, of a monocrystalline silicon substrate by using the mould slide boats, a first doped amorphous silicon indication area and a second doped amorphous silicon indication area that are of opposite doping types and are arranged in a crossed manner. By means of the preparing method, a fork shaped structure of a back field of a back contact solar battery is implemented simply at a low cost, and no additional manufacturing process of forming a passivation layer is required, thereby simplifying the method of preparing a back contact solar battery.

IPC Classes  ?

• H01L 31/0224 - Electrodes
• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof

Abstract

A solar battery and manufacturing method therefor. The method comprises: providing a semiconductor substrate (201); forming an aluminium back-surface field (204) and a passivation layer (205) on the back surface of the semiconductor substrate (201), wherein the aluminium back-surface field (204) comprises a grid-like aluminium back-surface field (206) and at least one main back-surface field (207) which is perpendicular to the grid-like aluminium back-surface field (206), and the passivation layer (205) is located in the gap between the grid-like aluminium back-surface field (206) and the main back-surface field (207). The aluminium back-surface field (204) of the solar battery formed by the method for manufacturing a solar battery is a hollow aluminium back-surface field comprising: the grid-like aluminium back-surface field (206) and the at least one main back-surface field (207) which is perpendicular to the grid-like aluminium back-surface field (206). The hollow aluminium back-surface field (204) can reduce the contact area between the aluminium back-surface field (204) and the semiconductor substrate (201), and can improve the energy conversion efficiency of the solar battery. In addition, the passivation layer (205) which is formed in the gap between the grid-like aluminium back-surface field (206) and the main back-surface field (207) functions to protect the solar battery, and improves the quality of the solar battery.

IPC Classes  ?

• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• H01L 31/0216 - Coatings
• H01L 31/0224 - Electrodes
• H01L 31/068 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices characterised by at least one potential-jump barrier or surface barrier the 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

Abstract

A method for manufacturing an IBC solar cell and an IBC solar cell. In the method, first conductive finger regions are formed by using a laser ablation process or a laser etching process, second conductive finger regions are formed by using a screen printing process, and multiple steps of screen printing of a barrier layer, etching, secondary screen printing of the barrier layer, diffusion, glass layer removing, cleaning and the like are not needed, so that the method for manufacturing an IBC solar cell is simplified, the production efficiency is improved, and the production cost is reduced. In addition, the second conductive finger regions of the provided IBC solar cell are combined with a silicon wafer substrate to form an emitter of the cell, and boron does not need to be doped into the emitter, so that the boron-oxygen recombination action at the second conductive finger regions is relatively weak, the light-induced degradation action is smaller, and therefore, the conversion efficiency of the cell is higher.

IPC Classes  ?

• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• H01L 31/068 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices characterised by at least one potential-jump barrier or surface barrier the 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

Abstract

A quartz crucible and a fabrication method thereof, and a P-type silicon ingot and a fabrication method thereof. The fabrication method comprises: successively performing slip casting, demolding, drying, and sintering on the crucible raw material, to obtain a quartz crucible, the crucible raw material comprising high-purity inorganic gallium salt and high-purity quartz sand, and the weight ratio of gallium in the crucible raw material to the high-purity quartz sand being 3.7-370g:1000kg. The content of gallium in the obtained quartz crucible is 0.296g-29.6g/100kg by weight. The electrical resistivity of a P-type silicon ingot fabricated by using the quartz crucible as a container can be improved.

IPC Classes  ?

• C03B 20/00 - Processes specially adapted for the production of quartz or fused silica articles
• C30B 28/06 - Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient

Abstract

Provided are a heterojunction solar battery and a preparation method therefor. The heterojunction solar battery comprises a TCO (50), and a gate electrode (60) formed on the TCO (50), wherein the gate electrode (60) partially extends into the TCO (50). The preparation method for a heterojunction solar battery comprises: providing an underlayment (10), and forming a TCO (50) above the underlayment (10); and forming a gate electrode (60) on the TCO (50), wherein in the step of forming the gate electrode (60) on the TCO (50), the gate electrode (60) partially extends into the TCO (50). By partially extending the gate electrode (60) into the inside of the TCO (50), the contact area between the gate electrode (60) and the TCO (50) is increased, and the contact resistance is reduced. Meanwhile, by the lateral contact between the gate electrode (60) and the TCO (50), the carrier transport is improved to a certain extent, and thus the filling factor of the solar battery is increased and the energy conversion efficiency of the battery is improved.

IPC Classes  ?

• H01L 31/0224 - Electrodes
• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof

Abstract

A coating structure for a crucible, a fabrication method thereof, and a crucible comprising same. The coating structure (200) comprises an isolation layer (210) and an induction layer (220), the isolation layer (210) is coated on the surface of a crucible substrate (100), and the induction layer (220) is coated on the surface of the isolation layer (210). The coating structure uses the two layer structure, namely, the isolation layer (210) and the induction layer (220). The induction layer (220) is arranged to carry the silicon melt long crystal, improve the effect of the silicon melt long crystal, and ensure the quality of a polycrystalline silicon ingot; the isolation layer (210) is arranged to isolate the formed polycrystalline silicon ingot from the crucible main body to prevent the impurities in the crucible main body from dispersing towards the polycrystalline silicon ingot and prevent the crucible from being adhered to the polycrystalline silicon ingot, so that the polycrystalline silicon ingot is easily demolded, thereby ensuring the quality of the fabricated polycrystalline silicon ingot.

IPC Classes  ?

• C30B 28/06 - Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient
• C30B 29/06 - Silicon

Abstract

An all-glass solar cell assembly, comprising a first panel (10), a second panel (20), and a cell unit (30) arranged between the two. Part of the region of the first panel (10) extends to exceed the border of the second panel (20), and a junction box (40) connected to the cell unit (30) is arranged in the exceeding region. By enabling the first panel (10) to be larger than the second panel (20), the junction box (40) thus can be arranged in an exceeding region, which allows the junction box (40) to be fixed on the first panel (10) and to form an integral structure with an all-glass solar cell assembly, increasing the degree of convenience during installation.

IPC Classes  ?

• H01L 31/048 - Encapsulation of modules
• H01L 21/04 - Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer

Abstract

Provided are a solar cell sheet and a heat treatment process thereof. The heat treatment process includes: a) sifting from solar cell sheets after printed and sintered cell sheets with conversion efficiency lower than 18% and filling factor thereof higher than 70%; b) performing low temperature annealing on the sifted cell sheets; c) sifting from the cell sheets after low temperature annealing cell sheets with decreased filling factor; d) re-sintering the sifted cell sheets; and e) sifting from the re-sintered cell sheets cell sheets with conversion efficiency lower than 18% and returning back to b) until most or all of the sifted meet demands. The low temperature annealing and re-sintering processes proceed cyclically, low temperature annealing can repair the defects in the substrate material, and the re-sintering process can repair the defects generated from low temperature annealing, and the two processes cooperate with each other and sifting can be performed repeatedly, greatly reducing the number of low efficient sheets and improving economic benefits.

IPC Classes  ?

• H01L 31/18 - Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• H01L 31/06 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices characterised by at least one potential-jump barrier or surface barrier

Abstract

A charging control method and a system for a photovoltaic vehicle are used to control a photovoltaic cell (1) and a generator (2) to charge a battery (3). The method includes: detecting the voltage of the photovoltaic cell (1) (S103); judging whether the voltage of the photovoltaic cell (1) is lower than the charging voltage of the battery (3) (S104); if no (S1042), controlling the photovoltaic cell (1) to charge the battery (3) (S105); if yes (S1041), controlling the generator (2) to charge the battery (3) (S108). When the quantity of electricity generated by the photovoltaic cell (1) is large, the photovoltaic cell (1) is used to charge the battery (3); when the quantity of electricity generated by the photovoltaic cell (1) can not meet the charging requirement of the battery (3), the generator (2) is used to charge the battery (3). The method and the system can reduce oil consumption and the usage cost of the vehicle, and ensure that the vehicle can work normally under any circumstance.

IPC Classes  ?

• H02J 7/14 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
• H02J 7/35 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
• B60L 8/00 - Electric propulsion with power supply from forces of nature, e.g. sun or wind

Abstract

The present invention relates to the field of automobile technology and discloses an electric power generating device for automobiles. Said electric power generating device for automobiles comprises a photovoltaic cell module, and the bottom surface of said photovoltaic cell module is mounted on a surface of an automobile, and the shape of said photovoltaic cell module conforms to the shape of the automobile surface where it is mounted. The power lead of said photovoltaic cell module is connected to an electric power-using device of the automobile. In an electric power generating device for automobiles that has this structure, the photovoltaic cell module is mounted on a surface of the automobile. So long as there is sunlight, the photovoltaic cell module can absorb solar energy and convert solar energy into electrical energy, regardless of whether the automobile is being driven or is parked, and supply this electrical energy to electric power-using equipment, to drive mechanisms, or to another electric power-using device of the automobile.

IPC Classes  ?

• B60L 8/00 - Electric propulsion with power supply from forces of nature, e.g. sun or wind

Abstract

A solar cell panel (20) mounting member includes: a bottom member (11) provided with a first connecting member (111) which is used for fixing said mounting member, a standing pole (12) set on the upper surface of the bottom member (11), an upper cover (14) set at the top of the standing pole (12). Said upper cover (14) cooperates with the bottom member (11) for engaging with the frame (21) of the solar cell panel (20), so as to fix said solar cell panel (20). Said mounting member can fix the solar cell panel safely and effectively.

IPC Classes  ?

• E04D 13/00 - Special arrangements or devices in connection with roof coveringsRoof drainage
• E04D 13/18 - Roof covering aspects of energy collecting devices, e.g. including solar panels
• H01L 31/04 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof adapted as photovoltaic [PV] conversion devices

Goods & Services

Batteries for lighting; Battery chargers; Electric conductors; Electronic chips for the manufacturer of integrated circuits; Galvanic batteries; Glass covered with an electrical conductor; Integrated circuits; Photovoltaic solar modules for production of electricity; Plates for batteries; Printed circuits; Semi-conductors; Silicon wafers; Solar batteries; Solar cells; Solar panels for production of electricity; Solar wafers

Goods & Services

Batteries for lighting; Battery chargers; Electric conductors; Electronic chips for the manufacturer of integrated circuits; Galvanic batteries; Glass covered with an electrical conductor; Integrated circuits; Photovoltaic solar modules for production of electricity; Plates for batteries; Printed circuits; Semi-conductors; Silicon wafers; Solar batteries; Solar cells; Solar panels for production of electricity; Solar wafers

Goods & Services

Batteries for lighting; Battery chargers; Electric conductors; Electronic chips for the manufacturer of integrated circuits; Galvanic batteries; Glass covered with an electrical conductor; Integrated circuits; Photovoltaic solar modules for production of electricity; Plates for batteries; Printed circuits; Semi-conductors; Silicon wafers; Solar batteries; Solar cells; Solar panels for production of electricity; Solar wafers

Goods & Services

Wafers [silicon slices]; Glass covered with an electrical conductor; Semi-conductors; Integrated circuits; Printed circuits; Electric conductors; Plates for batteries; Solar batteries; Galvanic cells; Battery chargers; Chips [integrated circuits]; Batteries for lighting; Solar Cells; Solar Modules; Solar Panels.

Goods & Services

Wafers [silicon slices]; Glass covered with an electrical conductor; Semi-conductors; Integrated circuits; Printed circuits; Electric conductors; Plates for batteries; Solar batteries; Galvanic cells; Battery chargers; Chips [integrated circuits]; Batteries for lighting; Solar Cells; Solar Modules; Solar Panels.

Goods & Services

Wafers [silicon slices]; Glass covered with an electrical conductor; Semi-conductors; Integrated circuits; Printed circuits; Electric conductors; Plates for batteries; Solar batteries; Galvanic cells; Battery chargers; Chips [integrated circuits]; Batteries for lighting; Solar Cells; Solar Modules; Solar Panels.

Goods & Services

Optical cables; Optical fibers; Optical lenses; Optical glasses; Silicon wafers; Eye glasses; Magnifying glasses; Protective glasses; Sun glasses; Inverters; Junction boxes; Electrical distribution boxes; Electric control panels; Capacitors; Current rectifiers; Semi-conductors; Electric distribution consoles; Integrated circuits; Photovoltaic cells; Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Transistors; Printed circuits; Electric conductors; Plates for batteries; Accumulator boxes; Solar batteries; Galvanic batteries; Battery chargers; Integrated circuits, integrated circuit chips, and integrated circuit modules for encoding and decoding digital video; Batteries for lighting; Electric batteries; Luminous signs; Traffic-light apparatus as signalling devices

Goods & Services

Lamps; Projector lamps; Electric torches for lighting; Lighting apparatus for vehicles; Lights for vehicles; Water heaters; Furnaces; Portable electric heaters; Heat accumulators; Heat pumps; Solar collectors; Water purification installations; Radiators as heating; Searchlights; Street lamps; Hot plates; Heating installations; Electric heating fans

Goods & Services

(1) Motor oil; lubricating grease; fuel for domestic heating; fuel oil; mineral oil; wax for automobile, floor and furniture; candles; non-chemical additives for oils and fuels; oil for the preservation of masonry; lamp fuel; cutting fluids; household appliances, namely small electric kitchen appliances; electromechanical controls for room thermostats and water heaters; elevating work platforms; motors, namely electric machine motors and power tool motors; painting sets; dynamos; pumps, namely, heat pumps, vacuum pumps and water pumps; transmission gears for machines; carpet cleaning machines; household utensils, namely, floor washing machines; metalworking machine tools; lanterns; optical lenses; silicon wafers; inverters; junction boxes; electrical distribution boxes; electric control panels; capacitors; current rectifiers; semiconductors; electric distribution consoles; integrated circuits; photovoltaic cells used for converting sun ultra violet radiation energy directly into electricity; transistors; printed circuits; electrical conductors for electric motors, transformer and integrated circuits; plates for batteries; accumulators boxes; solar batteries used for automobiles, cameras, cellular phones, watches, household appliances, computers, street lamps, power plants and buildings; galvanic batteries used for automobiles, cameras, cellular phones, watches, household appliances, computers, street lamps, power plants and buildings; battery chargers used for automobiles, cameras, cellular phones, watches, household appliances, computers, street lamps, power plants and buildings; batteries for lighting; batteries for pocket lamps; electric batteries used for automobiles, cameras, cellular phones, watches, household appliances, computers, street lamps, power plants and buildings; luminous signs.

Goods & Services

Optical lanterns; optical goods; optical glass; wafers [silicon slices]; glass covered with an electrical conductor; inverters [electricity]; junction boxes [electricity]; distribution boxes [electricity]; control panels [electricity]; capacitors; current rectifiers; semi-conductors; distribution consoles [electricity]; integrated circuits; photovoltaic cells; electric regulating apparatus; electronic transistors; printed circuits; electric conductors; electric collectors; plates for batteries; accumulator boxes; solar batteries; galvanic cells; battery chargers; chips [integrated circuits]; armatures [electricity]; batteries for lighting; batteries for pocket lamps; electric batteries; luminous signs; traffic-light apparatus [signaling devices].

Goods & Services

[ Pure silicon sold in ingots, pure silicon sold in blocks ] Photovoltaic solar modules, solar cells, solar modules, silicon chips, silicon wafers, multi-crystalline photovoltaic cells Solar collectors for generating energy, in particular electricity

Goods & Services

[ Pure silicon sold in ingots, pure silicon sold in blocks ] Photovoltaic solar modules, solar cells, solar modules, silicon chips, silicon wafers, multi-crystalline photovoltaic cells Solar collectors for generating energy, in particular electricity

Goods & Services

[ Pure silicon sold in ingots, pure silicon sold in blocks ] Photovoltaic solar modules, solar cells, solar modules, silicon chips, silicon wafers, multi-crystalline photovoltaic cells Solar collectors for generating energy, in particular electricity

Goods & Services

Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, generating, transforming, accumulating, regulating or controlling electricity and energy; photovoltaic modules, solar cells, solar modules and solar collectors for generating energy, in particular electricity; apparatus for recording, transmission or reproduction of sound or images; data carriers of all types with and without data; entertainment apparatus for connecting to televisions; cash registers, calculating machines and data processing equipment; computers and computer software; silicon chips, silicon wafers. Building construction; installation and repair of solar modules and solar collectors. Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software.

Goods & Services

Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, generating, transforming, accumulating, regulating or controlling electricity and energy; photovoltaic modules, solar cells, solar modules and solar collectors for generating energy, in particular electricity; apparatus for recording, transmission or reproduction of sound or images; Data carriers of all types with and without data; entertainment apparatus for connecting to televisions; cash registers, calculating machines and data processing equipment; computers and computer software; silicon chips, silicon wafers. Building construction; installation and repair of solar modules and solar collectors. Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software.