1150results about "Hybrid capacitor terminals" patented technology

Thin-film micro-electrochemical energy storage cells (MEESC) such as microbatteries and double-layer capacitors (DLC) are provided. The MEESC comprises two thin layer electrodes, an intermediate thin layer of a solid electrolyte and optionally, a fourth thin current collector layer; said layers being deposited in sequence on a surface of a substrate. The MEESC is characterized in that the substrate is provided with a plurality of through cavities of arbitrary shape, with high aspect ratio. By using the substrate volume, an increase in the total electrode area per volume is accomplished.

To provide a sheet-like power storage device which can be curved or bent in at least one axis direction. A power storage device includes a power storage element including a plurality of flexible sheet-like positive electrodes each having one end portion fixed to a positive electrode tab; a plurality of flexible sheet-like negative electrodes each having one end portion fixed to a negative electrode tab; and a plurality of flexible sheet-like separators. The positive electrodes and the negative electrodes are alternately stacked so as to overlap with each other with the separator interposed therebetween. The power storage element is sealed in a flexible exterior body.

An electrical storage device of the present invention is characterized in that a positive electrode, a negative electrode, a lithium electrode, and an electrolyte capable of transferring lithium ion is included, the lithium electrode is arranged to be out of direct contact with the negative electrode, and lithium ion can be supplied to the negative electrode by flowing a current between the lithium electrode and the negative electrode through an external circuit. With the above characteristic, problems such as non-uniform carrying of lithium ion to the negative electrode, shape-change of a cell, and temperature increase of an electrolytic solution under incomplete sealing of a cell and the like can be easily solved. A using method of the electrical storage device is characterized in that, by using the lithium electrode as a reference electrode, the positive electrode potential and negative electrode potential can be measured, and the potential of the positive or negative electrode can be controlled when the electrical storage device is charged or discharged. Therefore, the potentials of the positive electrode and negative electrode can be monitored, thereby it can be easily determined whether deterioration of the electrical storage device is caused by the positive electrode or the negative electrode. Also, it is possible to control the device with the potential difference between the negative electrode and reference electrode, that is, the negative potential. In addition, when characteristics deteriorate such as the internal resistance increase, an appropriate amount of lithium ion can be supplied to the negative electrode and / or positive electrode by the lithium electrode.

The energy content of supercapacitor is determined by its capacitance value and working voltage. To attain a high capacitance and a high voltage, several pieces of electrodes and separators are spirally wound with edge sealing to form a bipolar supercapacitor in cylindrical, oval or square configuration. While the winding operation effectively provides a large surface area for high capacitance, the bipolar packaging instantly imparts a unitary roll a minimum working voltage of 5V on using an organic electrolyte. The bipolar roll is a powerful building block for facilitating the assembly of supercapacitor modules. Using containers with multiple compartments, as many bipolar rolls can be connected in series, in parallel or in a combination of the two connections to fabricate integrated supercapacitors with high energy density as required by applications.

There is provided an organic electrolyte capacitor having electrodes on current collectors that have holes penetrating the front and rear surfaces, in which electrode materials formed an the through-holes of the current collectors seldom fall off and high energy density and high power density can be obtained. The organic electrolyte capacitor includes positive electrodes, negative electrodes and an electrolyte capable of transferring lithium ions, in which the positive electrodes contain a substance capable of carrying lithium ions and / or anions reversibly as a positive electrode active material, the negative electrodes contain a substance capable of carrying lithium ions as a negative electrode active material, the positive and negative electrodes possess the positive or negative electrode active material layers on an electrode substrate that has conductive layers made of conductive materials on current collectors, which have through-holes, and the negative electrodes carry lithium electrochemically.

Assembled battery (80) includes two battery cells (20A, 20B) arranged in parallel, which are accommodated in single parallel-arranged module (50). Inter-battery airflow passage (65) is formed between parallel-arranged modules so as to allow cooling air to pass therethrough. Pressure contact members (60) each have hollow portion (61) formed by solid portion (66) and thin wall portion (61a) and are arranged in layers. Hollow portion (61) forms a cooling air passage. Cooling air supplied to the cooling air passage is sent to battery cell (20B) on the rear side, and directed and supplied toward the central part of battery cell (20B). Solid portions (66) in area A hold electrode tab (25) therebetween while pressure contact members (60) are in contact with each other in area B.

An ultracapacitor energy storage cell pack including an ultracapacitor assembly including a plurality of ultracapacitors, each ultracapacitor including opposite ends with connection terminals protruding therefrom for directly connecting the ultracapacitors end-to-end in series; and a plurality of interconnections for mechanically and electrically interconnecting the ultracapacitors end-to-end in series without the connection terminals from adjacent ultracapacitors contacting each other, preventing mechanical stress in the connection studs.

A power storage device having a small thickness is manufactured. A manufacturing method of the power storage device includes: forming a first layer and a second layer over a first substrate; forming a first insulating layer, a positive electrode and a negative electrode over the second layer; forming a solid electrolyte layer over the first insulating layer, the positive electrode, and the negative electrode; forming a sealing layer to cover the solid electrolyte layer; forming a planarization film and a support over the sealing layer; separating the first layer and the second layer from each other so that the second layer, the positive electrode, the negative electrode, the solid electrolyte layer, the sealing layer, the planarization film, and the support are separated from the first substrate; attaching the separated structure to a second substrate which is flexible; and separating the support from the planarization film.

A package case is structured by a plurality of substantially identical and flat frames stacked on one another. Flat laminate cells (accumulator cells) are individually accommodated in the frames and stacked on one another, so that the number of flat laminate cells (accumulator cells) can readily be changed simply by increasing / decreasing the number of frames to be stacked to meet energy needs and the like. The accumulator device is segmented using the plurality of flat frames, so that externally applied impacts can readily be dispersed and the impact transmitted to the flat laminate cells (accumulator cells) can be reduced without reinforcing the accumulator device 1 with more than necessary strength.

A wound electric double-layer capacitor suppresses electrochemical reaction on polarized electrode layers, reduces characteristic degradation, and has high reliability. The capacitor has a capacitor element formed by winding positive and negative electrodes with a separator interposed between them, a metal case for storing the capacitor element and an electrolyte for driving, and a sealing member for sealing an opening of the metal case. In the positive and negative electrodes, positive and negative electrode lead wires are coupled to exposed parts of current collectors having polarized electrode layers on their both surfaces, respectively. The negative electrode is wound at least one extra turn from the winding end of the positive electrode of the capacitor element, and hence a part where the polarized electrode layers formed in the negative electrode face each other through the separator is formed on the outermost periphery of the capacitor element.

An electric energy storage component having coil windings and at least one connector. A plate of the connector is in contact with the coil windings. The plate of the connector has a surface which is provided with a terminal wherein the shape thereof is essentially that of a revolution. The plate also forms a series of bosses extending in a raised manner along a surface of the plate opposite to that containing the terminal. The terminal has at least one inner recess and at least one boss which penetrates into the recess.

A composite electrode and a method for manufacturing the same are disclosed. By using a composite electrode that includes a porous support made of ceramic or metal and a conductive polymer or a metal oxide formed on a surface of the porous support, a capacitor or secondary cell that provides increased charge / discharge capacity and increased energy / output density, as well as high-temperature stability and high reliability, can be manufactured.

The present invention provides a highly reliable energy storage device capable of preventing a reaction current from flowing in a carbon nanotube electrode by ionizing a catalyst metal or a substrate metal to cause the metal to flow out to an electrolytic solution. An energy storage device of the present invention includes: at least a pair of electrode bodies that are a cathode and an anode; and an electrolytic solution. At least one of the electrode bodies is configured such that a layer of carbon nanotubes is formed on an electric conductor. A coupling region where one ends of the carbon nanotubes are coupled to and electrically connected to the electric conductor and a non-coupling region where ends of the carbon nanotubes are not coupled to the electric conductor are formed on a surface of the electric conductor. The carbon nanotubes having one ends connected to the coupling region are toppled to cover a surface of the non-coupling region.

In an electrochemical cell including a cathode 7, an anode 6, electrolyte 10, a hollow container 1 accommodating these members, and terminals extending from the inside to the outside of the hollow container 1, the terminals include a plurality of inner terminals 5a formed on the inner surface of the hollow container 1, a cathode outer terminal 5b1 formed on the outer surface of the hollow container 1, and an inner layer wire 5c formed on the inner layer of the hollow container 1 for commonly connecting the plurality of inner terminals 5a to the cathode outer terminal 5b1.

A mesoporous carbon material formed on an electrode surface in an energy storage device, and a method of forming the same are disclosed. The mesoporous carbon material acts as a high surface area ion intercalation medium for the energy storage device, and is made up of CVD-deposited carbon fullerene “onions” and carbon nanotubes (CNTs) that are interconnected in a fullerene / CNT hybrid matrix. The fullerene / CNT hybrid matrix is a high porosity material that is capable of retaining lithium ions in concentrations useful for storing significant quantities of electrical energy. The method, according to one embodiment, includes vaporizing a high molecular weight hydrocarbon precursor and directing the vapor onto a conductive substrate to form a mesoporous carbon material thereon.

A capacitor assembly is provided with a plurality of wound capacitor elements aligned horizontally in a longitudinally extended housing, whereby the largest capacitor element solely occupies a tier in the housing, another tier in the housing is solely occupied by two of the capacitor elements, and wherein the capacitor elements are configurable to provide various capacitance values.

When an electrode material having a weight-average mesopore / macropore specific surface area within a specific range is used, there arises an expansion of a cell caused by the generation of decomposed gas from a component of electrolyte solution during the pre-doping process of lithium ions. A potential drop upon the pre-doping process is adjusted so as to reduce or suppress the expansion of the cell. Specifically, since the pre-doping speed is increased, the negative electrode can speedily reach the potential by which an SEI component made of lithium alkyl carbonate can be produced on the surface of the negative electrode. Consequently, the absolute amount of the gas produced by the decomposition of the electrolyte solution can be reduced, whereby the expansion of the electric storage device can be reduced.

An anode material for a lithium ion device includes an active material including germanium and boron. The weight percentage of the germanium is between about 45 to 80 weight % of the total weight of the anode material and the weight percentage of the boron is between about 2 to 20 weight % of the total weight of the anode material. The active material may include carbon at a weight percentage of between 0.5 to about 5 weight % of the total weight of the anode material. Additional materials, methods of making and devices are taught.

For avoiding problems in existent non-aqueous electrolyte cells or electric double layer capacitors of a rectangular pyramidal shape that sealing at high reliability can not be attained unless a bonded portion has a margin of a certain degree in view of electrolytes contained therein, a metal layer comprising a metal ring and a brazing material having a heat expansion coefficient approximate to that of a concave vessel of a non-aqueous electrolyte cell or an electric doceble layer capacitor is disposed to the edge of the vessel, a sealing plate made of a metal having a property similar with the metal ring and having a brazing material layer at the bonded surface is also used for the sealing plate and, further, paired electrodes comprising a positive electrode and a negative electrode, a separator and an electrolyte are contained in the concave vessel, the sealing plate is placed on the vessel and seam welding is conducted by using a resistance welding method thereby capable of attaining sealing at high reliability.

The storage cell comprises a flat roll electrode that includes a strip of positive electrode having a positive electrode current collector foil and a positive electrode layer formed thereon, a strip of negative electrode having an electrode current collector foil and a negative electrode layer formed, and a strip of electrically insulated separator, the strip of positive electrode and the strip of negative electrode being wound into a flat roll configuration with the strip of electrically insulated separator sandwiched therebetween; a sealed casing that hermetically seals the flat roll electrode impregnated with an electrolyte; a positive terminal and a negative terminal each electrically insulated from the sealed casing, connected to the positive current collector foil and the negative current collector foil, respectively.

An electric double layer capacitor (EDLC) in a coin or button cell configuration having low equivalent series resistance (ESR). The capacitor comprises mesh or other porous metal that is attached via conducting adhesive to one or both the current collectors. The mesh is embedded into the surface of the adjacent electrode, thereby reducing the interfacial resistance between the electrode and the current collector, thus reducing the ESR of the capacitor.

The present invention provides an electrode comprising a carbon material obtained from an azulmic acid and a current collector and / or a binder.

The present invention relates to a power storage device including: a positive electrode having a positive-electrode current collector, a positive-electrode active material with a plurality of first projections on the positive-electrode current collector, and a first insulator on an end of each of the plurality of first projections; a negative electrode having a negative-electrode current collector, a negative-electrode active material with a plurality of second projections on a surface of the negative-electrode current collector, and a second insulator on an end of each of the plurality of second projections; a separator between the positive electrode and the negative electrode; and an electrolyte provided in a space between the positive electrode and the negative electrode and containing carrier ions. In each of the first projections and the second projections, a ratio of the height to the width is 3 or more and 1000 or less to 1, i.e. (3 to 1000):1.

A method of making an electrode structure, the electrode structure and a double layer capacitor including the electrode structure, the method comprising the steps of: forming a plurality of electrodes, each having a current collector plate, a primary coating formed on each side of the collector plate, the primary coating including conducting carbon powder and a binder, and a secondary coating formed on each primary coating, the secondary coating including activated carbon powder, a solvent and a binder; positioning a respective separator between each electrodes while stacking the electrodes such that the respective separator is juxtaposed against respective secondary coatings of adjacent electrodes that electrically insulates the adjacent electrodes, whereby forming an electrode stack; and rolling the electrode stack into a cylindrical electrode structure.

A negative electrode for a hybrid energy storage device includes a current collector; a corrosion-resistant conductive coating secured to at least one face of the current collector; a sheet comprising activated carbon adhered to the corrosion-resistant conductive coating; a tab portion extending from a side of the negative electrode; and a lug comprising a lead or lead alloy that encapsulates at least part of the tab portion.

An electrical power supply device for a motor vehicle, which includes a tray made of a heat-conducting material, in which there is positioned at least one ultra-high capacity energy storage unit liable to emit heat, the tray including at least one housing to accommodate at least one electrical energy storage unit with the presence of a heat-conducting layer made of a heat conducting adhesive or a heat-conducting resin interposed without clearance between the storage unit and the interior face of the wall of the associated housing so as to conduct the heat emitted by the unit.

A composite electrode and a method for manufacturing the same are disclosed. By using a composite electrode that includes a porous support made of ceramic or metal and a conductive polymer or a metal oxide formed on a surface of the porous support, a capacitor or secondary cell that provides increased charge / discharge capacity and increased energy / output density, as well as high-temperature stability and high reliability, can be manufactured.