111results about "Hybrid capacitors" patented technology

A method for the synthesis of compounds of the formula C-LixM1-yM'y(XO4)n, where C represents carbon cross-linked with the compound LixM1-yM'y(XO4)n, in which x, y and n are numbers such as 0<=x<=2, 0<=y<=0.6, and 1<=n<=1.5, M is a transition metal or a mixture of transition metals from the first period of the periodic table, M' is an element with fixed valency selected among Mg<2+>, Ca<2+>, Al<3+>, Zn<2+> or a combination of these same elements and X is chosen among S, P and Si, by bringing into equilibrium, in the required proportions, the mixture of precursors, with a gaseous atmosphere, the synthesis taking place by reaction and bringing into equilibrium, in the required proportions, the mixture of the precursors, the procedure comprising at least one pyrolysis step of the carbon source compound in such a way as to obtain a compound in which the electronic conductivity measured on a sample of powder compressed at a pressure of 3750 Kg.cm<-2 >is greater than 10<-8 >S.cm<-1>. The materials obtained have excellent electrical conductivity, as well a very improved chemical activity.

According to an aspect of the invention, a motor drive circuit includes a first energy storage device configured to supply electrical energy, a bi-directional DC-to-DC voltage converter coupled to the first energy storage device, a voltage inverter coupled to the bi-directional DC-to-DC voltage converter, and an input device configured to receive electrical energy from an external energy source. The motor drive circuit further includes a coupling system coupled to the input device, to the first energy storage device, and to the bi-directional DC-to-DC voltage converter. The coupling system has a first configuration configured to transfer electrical energy to the first energy storage device via the bi-directional DC-to-DC voltage converter, and has a second configuration configured to transfer electrical energy from the first energy storage device to the voltage inverter via the bi-directional DC-to-DC voltage converter.

An aerosol delivery device is provided that includes a substrate configured to carry an aerosol precursor composition, and a resonant transformer including a transmitter coupling device and a resonant receiver coupling device that is positioned in proximity to the substrate. The aerosol delivery device also includes a pulse width modulation (PWM) inverter configured to drive the resonant transformer. The PWM inverter includes a bridge circuit coupled to the transmitter coupling device, and a PWM controller embodied as an integrated circuit and configured to output a PWM signal to the bridge circuit configured to drive the transmitter coupling device to generate an oscillating magnetic field and induce an alternating voltage in the resonant receiver coupling device when exposed to the oscillating magnetic field. The alternating voltage causes the resonant receiver coupling device to generate heat and thereby vaporize components of the aerosol precursor composition.

An object of the present invention is to provide an energy storage device excellent in input/output characteristics at low temperatures, a module thereof and a vehicle using the module. The present invention provides an energy storage device comprising: a positive electrode having a region where a reaction accompanied by charge exchange occurs; a negative electrode having a region where a reaction accompanied by charge exchange occurs; a separator electrically separating the positive and negative electrodes and allowing mobile ions to pass therethrough; an electrolytic solution having an aprotic nonaqueous solvent comprising the mobile ions; and a region in at least one of the positive and negative electrodes where a charge adsorbing/desorbing reaction occurs.

This hybrid powered automobile has generators driven by the engine and a battery, and also includes a controller that selects the motive power in compliance with regulations on noise and NOx. The controller of the hybrid powered automobile selects whether the vehicle is to be driven by the electricity of the generators driven by the engine or by the electricity of the battery. When the battery charge level is lower than a specified level, the engine is operated in a range where the engine produces a minimum amount of NOx and the mileage does not deteriorate. When the vehicle is traveling in areas where release of exhaust emissions is permitted, the engine is operated to generate electricity to recharge the battery. The control of switching the motive power between the engine and the battery is performed by receiving a signal transmitted from a traffic light equipment elected on the road.

The invention discloses a hybrid super capacitor and a manufacture method thereof, belonging to novel energy storage elements and the technical field of manufacture thereof. A negative active material of the hybrid super capacitor is one or more of polymorphs TiO2-B of nano TiO2 or TiO2, and a positive active material thereof is one or more of carbon nano tube, carbon nano fiber, graphite, conductive carbon black, nickel hydroxide, manganese hydrate or molybdenum hydroxide. The hybrid super capacitor manufactures electrodes by adopting positive and negative active materials, a binder and a conductive agent as raw materials, and assemblies the electrodes into a simulative battery in a glove box so as to manufacture the hybrid super capacitor. The manufacture method provided by the invention has adjustability, simple manufacture process and easy operation, and the assembled hybrid super capacitor has the characteristics of high capacitance, low potential, stable performance, charge and discharge with large current, long cycle life, low cost, easy implementation for mechanized and large-scale production and the like.

There are provided a cluster of thin sheet graphite crystals or the like which is useful as an electrode material for lithium ion batteries, hybrid capacitors and the like, and a method for efficiently producing the same at high productivity. The method is one for producing a cluster of thin sheet graphite crystals composed of aggregates in such a state that thin sheet graphite crystals extend from the inside toward the outside, comprising charging a powdery and/or particulate material of an organic compound pre-baked to an extent of containing remaining hydrogen in a graphite vessel, and subjecting the powdery and/or particulate material together with the vessel to hot isostatic pressing treatment (HIP treatment) using a compressed gas atmosphere under the predetermined conditions.

A drive device having at least one electric motor that inputs and outputs motive power includes: a plurality of capacitors; a plurality of relays for capacitors that connects and disconnects the motor and the capacitors; and a relay control device that controls the relays for capacitors. The relay control device controls the plurality of relays for capacitors so that during a system start-up, a part of the plurality of relays for capacitors are connected, that is, a partially-on-state is established, after a first predetermined condition is satisfied during the partially-on-state, the part of relays for capacitors are disconnected and a remaining part of the plurality of relays for capacitors are connected, and after a second predetermined condition is satisfied during the remainder-on-state, all the plurality of relays for capacitors are connected.

Graphene that is formed from graphene oxide and has high conductivity and a method for forming the graphene are provided. A power storage device with high charge discharge capacity and favorable electric properties such as high reliability and high durability and a method for fabricating the power storage device are provided. Chemical reduction and thermal reduction are performed on graphene oxide in this order to form graphene. In the method for fabricating the power storage device including at least a positive electrode, a negative electrode, an electrolytic solution, and a separator, graphene of one or both of a positive electrode and a negative electrode is formed by the forming method of graphene.

The disclosure describes a charge device capable of charging electricity storage cells while eliminating a voltage variation among the electricity storage cells without a need for at least a circuit section playing a role in voltage equalization among the electricity storage cells to be designed to have a large current capacity, and describes a charge-discharge device constructed by additionally equipping a discharging function with the charge device. Provided are a charge device and a charge-discharge device each of which comprises a convertor, an input circuit, and a multi-stage voltage doubler rectifier circuit. An element in the convertor configured to be applied with a rectangular waveform voltage is connected to the multi-stage voltage doubler rectifier circuit via the input circuit to thereby realize a voltage equalization function, and an output section of the convertor is connected to the multi-stage voltage doubler rectifier circuit to thereby realize a charging-discharging function.

The invention relates to a mechanical preparation method of an aromatic polyimide porous material. The method comprises the following steps: placing two monomers of benzenetricarboxaldehyde and aromatic diamine in a mortar; dropwise adding dimethylformamide and an acetic acid solution; grinding at the room temperature for 1 to 4 hours; then washing and drying to obtain the porous material. By adopting a mechanical synthesis method, a dehydration condensation reaction is carried out between an aldehyde group and an amine group to produce the aromatic polyimide porous material; the aromatic polyimide porous material has application potentials on the aspects of gas storage and separation, supercapacitors, catalyst carriers and sensors.

A method for manufacturing electrical components of the energy-accumulating electrostatic or electrochemical type, consisting in winding at least two layers of a film on a support made of an electrically nonconducting material that has a substantially polygonal cross-section, by providing a preset number of film turns until a predefined thickness is reached, and forming a first layer; arranging respective spacers at the corners of the polygon in which the contour of the wound film is inscribed; and winding more turns of film around the first layer and around the spacers inserted at the corners, to form a second layer. A machine by means of which the method is performed comprises a rotatingly mounted frame on which the support is fixed for winding of the layer of film.

A circuit for the limitation of over-voltages in energy storage modules having a series circuit of energy storage elements connected between a first potential and a second potential includes voltage-limiting elements associated with combinations of the energy storage elements. Where “M” is the maximum number of directly interconnected energy storage elements of a predetermined combination, wherein for M≧2 a voltage-limiting element is connected in parallel with each combination and a respective voltage-limiting element is connected in parallel with a first energy storage element connected to the first potential and with an n^th energy storage element connected to the second potential. For M>2 a respective voltage-limiting element is connected in parallel with each sub-combination of at least two directly interconnected energy storage elements of the combination having an energy storage element connected to the first potential or to the second potential.

The present invention generally relates to lithium based energy storage devices. According to the present invention there is provided a lithium energy storage device comprising: at least one positive electrode; at least one negative electrode; and an ionic liquid electrolyte comprising an anion, a cation counterion and lithium mobile ions, wherein the anion comprises a nitrogen, boron, phosphorous, arsenic or carbon anionic group having at least one nitrile group coordinated to the nitrogen, boron, phosphorous, arsenic or carbon atom of the anionic group.