Abstract: A bifacial photovoltaic module has components that are arranged to maximize the efficiency of a module for both front and back surfaces. An opaque portion is disposed on back surfaces of modules and aligned with horizontal support bars of a multiple-module system. Junction boxes are arranged at opposing ends of the opaque portion and couple adjacent modules in the system.

Abstract: An electrode has a band-shaped core and an electrode mixture layer carried by the core to form a spiral electrode assembly with a gas generating electrode and a separator for an alkaline secondary battery. The electrode in the spiral shape has a first circumference portion, an intermediate portion, and an outermost circumference portion. The first circumference portion is a starting portion for winding into the spiral shape. The intermediate portion is a second and following circumferences of the spiral shape. The outermost circumference portion has an inner surface only which faces the gas generating electrode. The electrode mixture layer includes a reactant that develops a reaction consuming gas generated from the gas generating electrode. An amount of the reactant in the first circumference portion is more than those in the intermediate portion and/or the outermost circumference portion.

Abstract: An all solid battery includes a multilayer chip in which plurality of internal electrodes are alternately exposed to two side faces. A thickness SE of a solid electrolyte layer is 1 ?m or more and 50 ?m or less in an intersection portion in which two internal electrodes next to each other connected to different external electrodes overlap with each other. Thicknesses EL1 and EL2 of the two internal electrodes are 1 ?m or more and 200 ?m or less. In one of two non-intersection portions, a length EM from one of the pair of external electrodes contacting the one of the two non-intersection portions to an internal electrode spaced from the one of the pair of external electrodes in a distance direction is 50 ?m or more and 800 ?m or less. EM/(SE+EL1/4+EL2/4) is 20 or less.

Abstract: A method for manufacturing photovoltaic module includes: providing solar cells and a solder strip; applying insulating adhesive on rear surface of the solar cells; laying the solar cells along a first direction; placing the solder strip on the solar cells so that, along the first direction, one end of the solder strip abuts against a positive busbar of one solar cell, and is bonded to the insulating adhesive, and the other end of the solder strip abuts against a negative busbar of another solar cell adjacent thereto, and is bonded to the insulating adhesive; curing the insulating adhesive by irradiation with an ultraviolet lamp, so that the solar cells form a solar cell string; arranging the solar cell strings along a second direction, and connecting to form a photovoltaic cell pack; providing and laminating front packaging structure, the photovoltaic cell pack, and back packaging structure to form the photovoltaic module.

Abstract: Methods of fabricating solar cell emitter regions with differentiated P-type and N-type region architectures, and resulting solar cells, are described. In an example a solar cell includes a first emitter region of a first conductivity type disposed on a first dielectric region, the first dielectric region disposed on a surface of a substrate. A second dielectric region is disposed laterally adjacent to the first and second emitter region. The second emitter region of a second, different, conductivity type is disposed on a third dielectric region, the third dielectric region disposed on the surface of the substrate, over the second dielectric region, and partially over the first emitter region. A first metal foil is disposed over the first emitter region. A second metal foil is disposed over the second emitter region.

Abstract: Disclosed are an electrolytic reduction system of a vanadium electrolyte and a method for producing the electrolyte. The electrolytic reduction system includes a separating device and an electrolytic tank. The separating device is configured to separate a mixture consisting of a vanadium pentoxide (V2O5) solid and a sulfate acid solution, thereby obtaining a vanadium solution from a liquid discharging port of the separating device and a vanadium solid from a solid discharging port. The vanadium solution includes pentavalent vanadium ions. The electrolytic tank connects to the liquid discharging port of the separating device to contain the vanadium solution. In the method for producing the vanadium electrolyte, other chemical reagents are unnecessarily to be added into the mixture, and the vanadium solution is subjected to an electrolytic reduction process, such that the pentavalent vanadium ions are reduced to tetravalent vanadium ions and trivalent vanadium ions in the electrolytic tank.

Abstract: A method for manufacturing negative electrode active material including the steps of manufacturing a pellet by extruding a mixture of lithium metal and negative electrode active material, immersing the pellet in an electrolyte comprising an SEI film-forming additive, and manufacturing the pellet into powder form by grinding, washing and drying same. A negative electrode and a lithium rechargeable battery manufactured using the lithium-active material powder has an SEI film that is uniformly formed by having lithium uniformly doped in the negative electrode. During initial charging, the SEI film is stably formed, and thus an effect is achieved whereby the initial efficiency of the lithium rechargeable battery is improved.

Abstract: An electrode plate stacking apparatus for a prismatic secondary battery is provided.

Abstract: Disclosed herein are methods for using cracked film lithography (CFL) for patterning transparent conductive metal grids. CFL can be vacuum- and Ag-free, and it forms more durable grids than nanowire approaches.

Abstract: Aspects of the disclosure provide a solar device and a method for making the solar device. The solar device can include solar cells configured to form a solar cell string with at least a string terminal, and an insulated interconnector including two conductive ends configured to connect the string terminal to peripheral circuitry of the solar device. The method can include disposing the solar cells to form a solar cell string with at least a string terminal, and disposing an insulated interconnector with two conductive ends to connect the string terminal to peripheral circuitry of the solar device.

Abstract: Provided is a method for passivating a silicon-based semiconductor device and a silicon-based semiconductor device. The method includes the following steps: cutting, by using a cutting process, a preset region of the silicon-based semiconductor device, to form a first surface associated with the preset region; smoothing the first surface to adjust a surface appearance of the first surface, so that a height difference between a protrusion and a recess of a non-marginal region on the first surface is less than 20 nm; and passivating the smoothed first surface to form a first passivation layer on the first surface. The present application can reduce or avoid the problem of efficiency reduction caused by cutting a silicon-based semiconductor device and help to obtain a more efficient silicon-based semiconductor device.

Abstract: A battery comprising a battery element housed between a battery cover and a back plate, wherein the battery element, battery cover, and back plate have a slight curvature or contour adapted to conform to a curvature or a contour of a load-bearing platform. Further, the battery comprises flexible omnidirectional leads.

Abstract: An all solid battery includes a multilayer structure in which solid electrolyte layers and internal electrodes are alternately stacked, the plurality of internal electrodes including an electrode active material and a carbon material, the multilayer structure having a rectangular parallelepiped shape, the plurality of internal electrodes being alternately exposed to two different faces of the multilayer structure, a first cover layer provided on an upper face of the multilayer structure in a stacking direction, and a second cover layer provided on a lower face of the multilayer structure in the stacking direction. Each thickness of the plurality of internal electrodes is equal to or more than each thickness of the plurality of solid electrolyte layers. Vickers hardness of the plurality of solid electrolyte layers and Vickers hardness of the first and second cover layers are larger than Vickers hardness of the plurality of internal electrodes.

Abstract: The solar cell includes a silicon substrate, multiple first electrodes, and multiple second electrodes. The solar cell further includes a tunneling oxide layer, multiple doped polysilicon layers, and at least one barrier layer. The at least one barrier layer is arranged between every adjacent two doped polysilicon layers in the multiple doped polysilicon layers, and the multiple first electrodes are electrically connected to different doped polysilicon layers. The solar cell provided according to the present application can reduce the total thickness of the polycrystalline silicon layer, so that a thinner polycrystalline silicon layer can reduce parasitic absorption, thereby increasing short-circuit current. Moreover, the risk of slurry burning through the tunneling oxide layer is reduced by the barrier layer, while reducing metal recombination, which increases the open circuit voltage of the solar cell, thereby improving the photoelectric conversion efficiency of the solar cell.

Abstract: A system for supplying power to a portable battery pack including a battery enclosed by a wearable and replaceable pouch or skin using at least one solar panel is disclosed, wherein the pouch or skin can be provided in different colors and/or patterns. Further, the pouch or skin can be MOLLE-compatible. The battery comprises a battery element housed between a battery cover and a back plate, wherein the battery element, battery cover, and back plate have a slight curvature or contour. Further, the battery comprises flexible leads.

Abstract: The solar cell includes a substrate, a tunneling layer disposed on a first surface, and a first doped conductive layer disposed on a surface of the tunneling layer. The solar cell further includes a second doped conductive layer disposed on a surface of the first doped conductive layer, where the second doped conductive layer includes: multiple first portions and multiple second portions arranged alternately in a direction perpendicular to a predetermined direction and perpendicular to a thickness direction of the second doped conductive layer, each of the multiple first portions and the multiple second portions extends along the predetermined direction, a doping element concentration of the first doped conductive layer is lower than a doping element concentration of each of the multiple first portions, and the doping element concentration of each of the multiple first portions is lower than a doping element concentration of each of the multiple second portions.

Abstract: A variable solar panel assembly includes a conventional solar panel, a mirror panel, and a transparent solar panel. The variable solar panel assembly is configured to reflect, by the mirror panel, light passing through the transparent solar panel towards the conventional solar panel. A method for managing an angle between the mirror panel and the conventional solar panel includes determining a position of a light source relative to a position of the variable solar panel assembly and adjusting the mirror panel to reflect light from the light source towards the conventional solar panel of the variable solar panel assembly.

Abstract: Embodiments of the present disclosure provide a photovoltaic cell, a method for manufacturing the photovoltaic cell, and a photovoltaic module. The photovoltaic cell includes a substrate, and an emitter and a first passivation structure that are located on a first surface of the substrate, where the emitter is located between the substrate and the first passivation structure; a first electrode, penetrating through the first passivation structure and being in contact with the emitter; and a first eutectic, located between the first electrode and the emitter, where the first eutectic includes a material of the first electrode and a material of the emitter, and a part of the first electrode penetrates through the first eutectic and is in contact with the emitter.

Abstract: The battery pack includes cylindrical battery, a circuit board, and an exterior case including first case and second case. First case has a curved portion along an outer peripheral surface of cylindrical battery and first vertical wall connected to an end edge of the curved portion. Second case has second vertical wall connected to first vertical wall. First vertical wall has fitting protrusion protruding from opposed surface facing second vertical wall. Second vertical wall has fitting groove that is formed in opposed surface facing first vertical wall and that guides fitting protrusion. Fitting protrusion is guided into fitting groove, and first vertical wall and second vertical wall are welded together. First vertical wall has inner surface in a concave shape along a surface of cylindrical battery, and a leading end portion with opposed surface, being thicker than curved portion.

Abstract: A separator for electricity storage devices, which comprises a porous layer that contains a polyolefin resin and an ionic compound, and which is configured such that: the content of the ionic compound in the porous layer is from 5% by mass to 99% by mass (inclusive); and the degree of whiteness of this separator is more than 98.0.