Patent application number | Description | Published |
20100060252 | POWER SUPPLY APPARATUS SUPPLYING POWER STORED IN POWER STORAGE UNIT TO LOAD AND POWER SUPPLY SYSTEM INCLUDING POWER SUPPLY APPARATUS - A power supply apparatus converting electric power stored in a first power storage unit into a prescribed voltage for supply to a load includes: a power storage unit-side terminal coupled to the first power storage unit; a second power storage unit; a load-side terminal coupled to the load; a converter unit for increasing output voltage of the first power storage unit to a first voltage and outputting the first voltage to the load-side terminal at a time of discharging of the first power storage unit; a step-up circuit for increasing the output voltage of the first power storage unit and supplying the increased voltage to the second power storage unit; and a backflow prevention circuit arranged between the second power storage unit and the load-side terminal to allow current to flow from the second power storage unit to the load-side terminal and block current flowing from the load-side terminal to the second power storage unit. | 03-11-2010 |
20100117602 | SECONDARY BATTERY PROTECTION CIRCUIT - A secondary battery protection circuit has: a first switch that permits or inhibits charging of a secondary battery by switching a charge conductor between a conducting and a non-conducting state; a voltage detection portion that monitors the voltage of the secondary battery to output an error signal when the voltage is an overvoltage; and a first current path that has one end connected to the positive-side conductor and the other end connected to the negative-side conductor, and through which a current corresponding to the supplied electric power passes. The first current path, other than during charging of the secondary battery, is kept in a non-conducting state and, when the error signal is outputted while the first current path is in a conducting state, is irreversibly brought into a non-conducting state by a current of a predetermined amount or more passing therethrough. The first switch, when the first current path is in a conducting state, permits charging and, when the first current path is in a non-conducting state, inhibits charging. Thus, other than during charging, electric power consumption associated with overcharge protection is reduced, and once an overcharged state occurs, charging never again takes place. | 05-13-2010 |
20100253148 | ELECTRIC POWER SUPPLY SYSTEM - An electric power supply system is provided for feeding an output of a DC power source to a load at high efficiency and, without complicated controlling, for allowing for interchange of electric power among a commercial power system, a DC power source and a load. | 10-07-2010 |
20110107123 | POWER CONTROL SYSTEM FOR DISTRIBUTING POWER TO POWER DEMANDING FACILITY - A power control system includes a distribution unit distributing power supplied from a power system to a plurality of power demanding facilities, and a measurement unit measuring a value of running power between the power system and the distribution unit. A power control instruction is transmitted to a power demanding facility in the event of the condition of TLP05-05-2011 | |
Patent application number | Description | Published |
20120280242 | SEMICONDUCTOR FILM AND PHOTOELECTRIC CONVERSION DEVICE - There is provided a semiconductor film formed on a surface of a substrate and containing a crystalline substance, wherein the semiconductor film has a central region including a center of a surface of the semiconductor film and a peripheral region located around the central region, and a crystallization ratio in the peripheral region of the semiconductor film is higher than a crystallization ratio in the central region. There is also provided a photoelectric conversion device including the semiconductor film. | 11-08-2012 |
20130000721 | SUBSTRATE FOR PHOTOELECTRIC CONVERSION DEVICE, PHOTOELECTRIC CONVERSION DEVICE USING THE SUBSTRATE, AND METHOD FOR PRODUCING THE SUBSTRATE AND DEVICE - A photoelectric conversion device includes a substrate and a transparent, electrically conductive film covering at least a portion of a major surface of the substrate and having an irregular geometry on a surface thereof closer to a semiconductor layer. Furthermore, the photoelectric conversion device includes a first conduction type semiconductor layer covering at least a portion of the irregular geometry of the transparent, electrically conductive film, and a light absorption layer covering the first conduction type semiconductor layer. The irregular geometry has a bump having a maximum height equal to or larger than 50 nm and equal to or smaller than 1200 nm. The bump has a surface having a submicron recess having local peaks having a spacing equal to or larger than 2 nm and equal to or smaller than 25 nm. | 01-03-2013 |
20130081685 | PHOTOELECTRIC CONVERSION DEVICE - A photoelectric conversion device including a substrate and a pin type photoelectric conversion layer disposed on the surface of the substrate is provided. The pin type photoelectric conversion layer includes a first pin type photoelectric conversion layer formed by stacking a p type semiconductor layer, an i type semiconductor layer serving as an amorphous semiconductor layer and an n type semiconductor layer. The first pin type photoelectric conversion layer includes the first portion located on a part of the surface of the substrate and the second portion located on another part of the surface of the substrate. The first portion is higher in concentration of at least one impurity element selected from oxygen, nitrogen and carbon than the second portion. The first portion is less in thickness than the second portion. | 04-04-2013 |
20130180567 | THIN-FILM SOLAR CELL AND METHOD OF FABRICATING THIN-FILM SOLAR CELL - A thin-film solar cell includes a cell having a transparent electrode layer, a photoelectric conversion layer, and a back electrode layer stacked on a transparent insulation substrate. A plurality of cells are connected in series to constitute a cell string. A bus bar is arranged on the back electrode layer of an end cell constituting the cell string. The thin-film solar cell has a photoelectric conversion layer on a series-connection direction end of the transparent electrode layer. In plan view, a series-connection direction end of the back electrode layer at an end of the cell string and the series-connection direction end of the transparent electrode layer at the end of the cell string do not overlap, while the bus bar and the transparent electrode layer at the end cell constituting the cell string overlap at least partially. A method of fabricating the thin-film solar cell is provided. | 07-18-2013 |
20140248733 | METHOD OF MANUFACTURING PHOTOELECTRIC CONVERSION DEVICE - The present invention provides a method of manufacturing a photoelectric conversion device for forming a semiconductor layer on a substrate by the plasma CVD method. The method includes a first plasma processing step in which a processing temperature reaches a first temperature; a second plasma processing step in which the processing temperature reaches a second temperature; a temperature regulating step of lowering the processing temperature to a third temperature lower than the first temperature and the second temperature after the first plasma processing step and before the second plasma processing step; and a temperature raising step of raising the processing temperature from the third temperature to the second temperature. The first plasma processing step, the temperature regulating step, the temperature raising step, and the second plasma processing step are carried out within the same reaction chamber. | 09-04-2014 |