Patent application number | Description | Published |
20080238244 | Optimized Energy Conversion Device - A variable capacitance device including at least one first fixed electrode and a second electrode free to move with respect to the fixed electrode, each electrode including a body and protuberances projecting from at least one face of the body. Each electrode is arranged such that the faces of each electrode provided with the protuberances are facing each other, the distance separating the two faces facing each other being greater than the sum of the heights of a protuberance from the fixed electrode and a protuberance from the mobile electrode. The electrodes are capable of moving with respect to each other in two parallel planes along at least one main direction. | 10-02-2008 |
20100072859 | DEVICE FOR CONVERTING MECHANICAL IMPACT ENERGY INTO ELECTRICAL ENERGY WITH OPTIMISED EFFICIENCY - Device for converting mechanical energy from the impact of objects into electrical energy, comprising a frame, a membrane suspended on said frame by at least a first and second longitudinal end, said membrane being intended to be impacted by said objects in a direction substantially transverse to a mid-plane of the membrane, said membrane comprising a core made from material for transducing mechanical energy into electrical energy, extending from the first longitudinal end to the second longitudinal end, and at least one electrode on a first face of the core and at least one electrode on a second face of the core, said electrodes extending from the first to the second longitudinal end. | 03-25-2010 |
20100079037 | ELECTROACTIVE POLYMER TRANSDUCER - An electroactive polymer transducer comprising a membrane formed of an approximately rectangular electroactive polymer portion surrounded by two electrodes, at least two points of the membrane being connected to rigid supports, and comprising at least one deformable element for limiting the deformations that the membrane may undergo, the limiting element having a meandering form and being connected to the membrane in several approximately distributed points. | 04-01-2010 |
20100095762 | RADIO FREQUENCY TRANSMITTING/RECEIVING ANTENNA WITH MODIFIABLE TRANSMITTING-RECEIVING PARAMETERS - Radio transmitting and receiving slot antenna, comprising a transmitting and receiving portion, means for connection to a transmitting and/or receiving circuit, said transmitting and receiving portion being formed of two volumes of liquid delimiting a slot, and means to modify the shape of said volumes of liquid and to modify the width of the slot, said means to modify the shape of said volume of liquid using electrostatic forces, the liquid being electrically conductive, and a control unit controlling the means to deform the volumes of fluid. | 04-22-2010 |
20100133954 | METHOD AND DEVICE FOR CONVERTING MECHANICAL ENERGY INTO ELECTRICAL ENERGY - A method for converting mechanical energy into electrical energy by at least one piezoelectric element and at least one variable capacitor. The method: a) mechanically deforms the piezoelectric element; b) recovers charges produced by the deformation of the piezoelectric element; c) transfers the charges from the piezoelectric element to the capacitor; d) modifies the capacitance of the capacitor; and e) recovers at least some of the electrical energy. A device for converting mechanical energy into electrical energy includes a piezoelectric element and a variable capacitor. The piezoelectric element is capable of transferring charges to the capacitor. | 06-03-2010 |
20100264870 | ELECTRICAL CONVERTER WITH VARIABLE CAPACITOR - A system for converting energy at a first voltage to a second voltage, including at least one source of voltage, a discharge switch, a variable capacitor, and a collection mechanism, connected in parallel, a charge switch between the discharge switch and the source, a transfer switch between the variable capacitor and the collection mechanism, and a controller to execute a control such that: a) during a first operation, the charge switch is closed to charge the variable capacitor, while the discharge switch and the transfer switch remain open; b) during a subsequent operation, the discharge switch is closed for a short instant while the charge switch remains open, allowing at least partial discharge of the variable capacitor. | 10-21-2010 |
20100295415 | ENERGY RECOVERING DEVICE WITH A LIQUID ELECTRODE - An energy recovery device including: at least one capacitor with variable capacitance, the capacitor including a fixed electrode, a dielectric layer, and a liquid electrode; and a mechanism to inject an electric charge into the capacitor and to remove the electric charge therefrom, including a charge injection electrode forming a portion of the second face positioned upstream from the fixed electrode in the direction of displacement of the liquid electrode, and a charge removal electrode forming a portion of the second face positioned downstream from the fixed electrode in the direction of displacement of the liquid electrode. | 11-25-2010 |
20110138838 | DEVICE FOR VARYING THE PRESSURE OF A PNEUMATIC FLUID THROUGH DISPLACEMENT OF LIQUID DROPLETS AND HEAT PUMP USING SUCH A DEVICE - A heat pump comprising at least two devices for displacement of droplets of liquid by electro-wetting, where one comprises a control unit such that it forms a compressor ( | 06-16-2011 |
20110234043 | FLEXIBLE DIELECTRIC VARIABLE CAPACITANCE SYSTEM - A variable capacitance system including a first electrode, a second electrode, and a layer of elastically deformable dielectric material positioned between the first and the second electrode. An electret forms with the first electrode a first capacitor, and the electret forms with the second electrode a second capacitor. Capacitances of the first and second capacitors vary with deformation of the dielectric layer. The first electrode, the second electrode, and the first electret follow deformations of the dielectric layer and a deformation of the dielectric layer causes an inverse variation of capacitances of the first and of the second capacitor. The first electrode includes slots in which the electret is located, wherein the edge of the slots forms with the electret located inside the slots the first capacitor, wherein the electret is made on or in the dielectric layer. | 09-29-2011 |
20110248602 | ACOUSTIC RESONATOR COMPRISING AN ELECTRET AND METHOD OF PRODUCING SAID RESONATOR, APPLICATION TO SWITCHABLE COUPLED RESONATOR FILTERS - Acoustic resonator comprising an electret, and method of producing said resonator, application to switchable coupled resonator filters. | 10-13-2011 |
20120091828 | MICROMECHANICAL DEVICE FOR AMPLIFYING A VIBRATING MOVEMENT - An apparatus for amplifying a vibratory movement includes a micromechanical device having an interface for fixedly joining it to a vibrating member; a mass mounted to be mobile in at least one degree of freedom relative to the interface; a spring capable of exerting a return force between the mobile mass and the interface; an orientation-detecting member for detecting the orientation of the shift of the interface according to said degree of freedom; and a coupling member for coupling the mobile mass to the interface. The coupling member is configured to couple the mobile mass to the interface when an orientation of shift of the interface is opposite that of the mobile mass and to uncouple the mobile mass from the interface before a change in orientation of the interface and when the orientation of shift of the interface is identical to that of the mobile mass. | 04-19-2012 |
20120273904 | MINERAL ELECTRET-BASED ELECTROMECHANICAL DEVICE AND METHOD FOR MANUFACTURING SAME - This device includes a dielectric stack including at least one electret layer ( | 11-01-2012 |
20140015488 | Battery with Individual Cell Management - The invention relates to a battery comprising a plurality of modules arranged in series, characterised in that a module comprises a cell and a cell switch arranged in series with the cell, and in that a circuit for controlling the cell switch is electrically fed directly by at least one cell of a module of the battery. | 01-16-2014 |
20140079970 | DIFFERENTIAL VOLTAGE MEASUREMENT CIRCUIT - A voltage measurement circuit including a current mirror having an input branch in series with a first resistive element between first and second nodes of application of said voltage, and having an output branch providing a current representative of said voltage. | 03-20-2014 |
20140109950 | Photovoltaic Energy Generation Device with Individual Management of the Cells - Photovoltaic energy generation device comprising several modules ( | 04-24-2014 |
20140109951 | Device for Generating Photovoltaic Energy with Blocks of Cells - Photovoltaic energy generation device, characterized in that it comprises at least one brick ( | 04-24-2014 |
20140111026 | Photovoltaic Energy Generation Device - Photovoltaic energy generation device comprising several cells ( | 04-24-2014 |
20140287278 | Battery Having a Brick Architecture Including Cells Arranged in Series or in Parallel - Battery comprising several cells disposed in several modules ( | 09-25-2014 |
20140345296 | MODULE FOR WARMING AND, ALTERNATELY, FOR COOLING - A module for warming and, alternately, for cooling, this module comprising an electrocaloric capacitor, an electrical energy storage device and a controllable circuit for transferring electrical energy between the electrocaloric capacitor and the energy storage device. The controllable circuit comprising an inductor connected between the electrocaloric capacitor and the storage device and at least one controllable switch. There is further included a unit programmed to control the switch so as to cause the transfer circuit to toggle successively into the following states and in the following order: an energy recovery state, a disabled state in which it electrically isolates the electrocaloric capacitor and the energy storage device, an energy release state and the disabled state, and each time to maintain the transfer circuit in the disabled state for a duration greater than a predetermined threshold. | 11-27-2014 |
20140361626 | COMBINED CONTROL OF TWO VOLTAGE SOURCES - Electrical management system comprising a first voltage source linked to a load and a second voltage source at lower voltage, characterized in that the second voltage source and/or an associated charger can be arranged in series with the first voltage source and the load. | 12-11-2014 |
20140368214 | ELECTRIC CABLE WEAR CONTROL SYSTEM - A system including: a cable including: a core capable of transporting at least one useful electric signal; a sheath surrounding said core; at least one conductive wear detection strand embedded in the sheath and substantially extending along the entire length of the cable; and at least one reference conductive element which is not connected to said at least one wear detection strand and substantially extends along the entire cable length; and a control unit capable of measuring the capacitance or the resistance formed between said at least one strand and the reference conductive element. | 12-18-2014 |
20150035408 | ELECTROSTATIC DEVICE AND METHOD FOR RECOVERING MECHANICAL ENERGY BY TRIBOELECTRIC EFFECT - A device for recovering energy including a first assembly and a second assembly facing each other, the first assembly including a first conductive element and a first dielectric element carried by the first conductive element, and the second assembly including a second conductive element. The first dielectric element is arranged between the first conductive element and the second conductive element. The device further includes a mechanism ensuring that the first dielectric element comes into contact with the second conductive element. A material of the first dielectric element and the material of the second conductive element have different triboelectric affinities. | 02-05-2015 |