92results about How to "Small internal resistance" patented technology

Disclosed are a temperature sensor device using a thermopile, the total number n of thermocouples thereon can be increased without greatly increasing the internal resistance of the thermopile r, providing high output level and high S/N ratio, a highly sensitive radiation thermometer using the device, and production method of the device using organic material for thin films to form the thermopile. These provide a standardized inexpensive multi-layered thin film thermopile, a radiation thermometer with high sensitivity, and production method of these devices. The temperature sensor device is a device wherein a thermopile which is formed on a thin film thermally isolated from a substrate is place in a temperature sensing part, and the thin film is formed as a multi-layered thin film, a layered thermopile is formed on each layered thin film, the substrate functioning as a heat sink which is one junction of the reference temperature of the thermopile.

Disclosed are an inexpensive all-solid-state lithium battery and a group of batteries having a small internal resistance. The electrode active material of the battery is formed on the surface of a solid electrolyte (it may be a crystal or a glass material) containing lithium ion such as Li_3.4V_0.6Si_0.4O₄ and a Li—Ti—Al—P—O based glass material by exerting ion impact, high voltage application (e.g., about 400 V) and the like on the surface to react it. The resultant battery comprises the solid electrolyte and an electrode active material composed of a decomposition product of the solid electrolyte and provided on at least one side of the solid electrolyte. One obtainable by accumulating a plurality of the batteries serves as a group of batteries.

Disclosed is a membrane for a fuel cell, which comprises: a polymer electrolyte membrane which comprises a cross-linked anion-exchange resin having a strongly basic anion-exchange group such as a quaternary ammonium salt group, a quaternary pyridinium salt group and a quaternary imidazolium salt group; and a polymer which is attached on at least one surface of the polymer electrolyte membrane and has a weakly acidic group such as a polyacrylic acid. Also disclosed is a method for producing the membrane.

To provide a method of controlling charge and discharge of a secondary battery for automatic guided vehicle that can decide the timing of refresh charge and discharge accurately and minimize the frequency of refresh charge and discharge. The method of controlling charge and discharge of a secondary battery for automatic guided vehicle comprises a first discharge step of making the secondary battery drive an automatic guided vehicle and discharge electricity with a predetermined amount; a voltage measurement step of measuring a discharge end voltage of the secondary battery at the completion of the first discharge step; and a charge step of performing a first charge step of charging the secondary battery incompletely at a first charging current value when the discharge end voltage is higher than a preset minimum voltage, and performing a second charge step of discharging the secondary battery fully and then charging the secondary battery fully at a second charging current value smaller than the first charging current value when the discharge end voltage equals the preset minimum voltage or less.

The present invention provides a secondary cell having a rolled-up electrode unit accommodated into an outer body. While an uncoated portion of a positive electrode projects at one of axially opposite ends of the rolled-up electrode unit to form a projection, an uncoated portion of a negative electrode projects at the other end to form a projection. Each of the two projections is formed with a current collecting auxiliary portion obtained by bringing each pair of the uncoated portions into ultrasonic pressing contact with each other. An electrode tab is attached to each of the positive electrode and the negative electrode. Outer ends of the two electrode tabs project outward beyond the outer body. The two outer ends provide a pair of positive and negative electrode terminal portions.

The nonaqueous electrolyte secondary battery includes a wound electrode body in which a positive and a negative electrode plates are wound with a separator therebetween and an air gap portion is formed at the winding axis center. A negative electrode collector tab is joined to a negative electrode exposed portion on the winding start side. This collector tab is bent so as to be touched and joined to the inside bottom portion of a battery exterior can at the position corresponding to the air gap portion. In a plan view, the air gap portion of is formed in a shape having an arc portion and a chord portion. In a plan view, the negative electrode collector tab is made to be linear along the chord portion of the negative electrode exposed portion on the winding start side, and is joined to the negative electrode exposed portion at this chord portion.

A thin-type electric double layer capacitor having low internal resistance. This capacitor includes pairs of a current collector and polarizable electrode disposed opposite to each other with a separator being interposed therebetween. The current collector and polarizable electrode, each containing a thermoplastic binder resin and carbon, are made integral by compatibilization of the thermoplastic binder resins. Polarizable electrode faring with the separator is disposed on the plane as that for the current collector. In this capacitor, the glass-transition temperature of the thermoplastic binder resin contained in the current collector is lower than that of the thermoplastic binder resin contained in the polarizable electrode.

A DC-DC converter for supplying a display panel with first and second power voltages, the DC-DC converter includes: a first converting module to convert an input power voltage into the first power voltage in response to a control signal; a sensor to detect a drive current of the display panel when the first power voltage is output; and a second converting module to convert the input power voltage into the second power voltage lower than the first power voltage in response to the control signal, the second converting module including: a first inverting converter to generate the second power voltage corresponding to the input power voltage regardless of an amount of the detected drive current; and a second inverting converter to selectively generate the second power voltage corresponding to the input power voltage and according to the amount of the detected drive current.

The invention relates to a plastic-wood composite material and provides a hickory nut shell ecologic wood composite material and a preparation method thereof. The hickory nut shell ecologic wood composite material is prepared from following components including, by weight, 50-60 parts of a thermoplastic high-molecular resin, 40-50 parts, or 30-40 parts, of hickory nut shell powder, 10-20 parts of wood powder, 8-10 parts of light calcium carbonate, 10-14 parts of a compatilizer, 2-4 parts of a thermal stabilizer, 2-4 parts of a lubricant, 2-3 parts of a plasticizer, and 1-3 parts of an antioxidant and an ultraviolet stabilizer. A comprehensive technology comprising deep process of raw materials and extrusion moulding and the like is employed. Deep process waste of wild hickories and waste plastic resources are employed. The composite material in the invention has dual-characteristics, which exist in common plastic-wood, of wood and plastic, is better in mechanical performances and is more rigid, durable, wear-resistant and weather-resistant. The method is simple and convenient, is low in manufacturing cost, can be recovered and recycled, can save energy resources and can protects environment.

This is to provide an all solid state secondary battery which can be produced by an industrially employable method capable of mass-production and has excellent secondary battery characteristics.

This is an all solid state secondary battery comprising a laminated material,

• • wherein the laminated material comprises a plurality of cell units and optionally a collector layer(s) constituting one of or both of an uppermost layer and a lowermost layer of the laminated material, wherein each of the cell units comprises a positive active material layer, an ion-conductive inorganic-material layer and a negative active material layer which are continuously arranged in this order, and is laminated so that the positive active material layer and the negative active material layer of adjacent cell units face each other, wherein (a) the laminated material is a product of co-firing, (b) each of the layer is in a sintered state, or (c) at least the ion-conductive inorganic-material layer is formed from a calcined powder of the ion-conductive inorganic-material.

An enhancement mode JFET as a switching device in a buck-boost converter circuit combined with a single rectifier diode and an inductor. A control circuit coupled to the gate of the JFET switches the JFET between a current conducting state and a current blocking state. The ratio of converter output voltage to converter input voltage is determined by the ratio of JFET current blocking time to the sum of JFET conduction time and JFET blocking time. This pulse width modulation scheme is thus used to adjust the dc output voltage level.

The electrochemical element includes an electrode assembly accommodated in a case with an electrolyte. The electrode assembly is formed into a flat shape by winding positive and negative electrodes with a separator interposed therebetween. The positive electrode includes an exposed positive current collector portion uncoated with an active material and formed in one end in the width direction of a strip-shaped positive current collector, and a positive lead is attached to the exposed positive current collector portion. The negative electrode includes an exposed negative current collector portion uncoated with an active material and formed in the other end in the width direction of a strip-shaped negative current collector, and a negative lead is attached to the exposed current collector portion. The exposed positive current collector portion on the one end is pressed and welded, and the exposed negative current collector portion on the other end is pressed and welded to form the electrode assembly. This implements a current collection structure for providing stable conductive connection with high quality in a simple manner for an electrochemical element requiring high power.

The invention relates to a ball-hinged coupling mechanism of a locator based on a three-dimensional force sensor, wherein a three-dimensional force sensor is arranged on a locator; a ball-hinged coupling unit is connected with the three-dimensional force sensor; a process ball head is hinged in the ball-hinged coupling unit; two laser tracker targets are symmetrically arranged on an upper surface of the ball-hinged coupling unit along a diameter direction; and a data wire of the three-dimensional force sensor is led out by a wiring hole of the three-dimensional force sensor on the side. The coupling mechanism integrates the ball-hinged coupling and the three-dimensional force sensor with the locator, achieves quick and accurate coupling of the plane and the locator and coordination control of the locator, not only improves production efficiency, but also reduces assembly stress greatly.

To produce active material particles for a lithium ion secondary battery, which have favorable surface smoothness, with which the cycle characteristics can be improved while an increase in the internal resistance of an active material layer is suppressed, and with which decomposition of the electrolyte can be suppressed even at a high voltage.

Active material particles (X) for a lithium ion secondary battery are contacted with a composition containing a compound (a) having a metal element (M) selected from the group consisting of Li, Mg, Ca, Sr, Ba, Pb, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Cu, Zn, Al, In, Sn, Sb, Bi, La, Ce, Pr, Nd, Gd, Dy, Er and Yb and a composition containing a fluoropolymer (b) having repeating units represented by —[CF₂—CR¹, R²]— (wherein each of R¹ and R² is H, F or —CF₃), followed by heating.

Disclosed is a secondary battery having a novel structure in which a jelly-roll type electrode assembly (“jelly-roll”) in which a cathode including a cathode active material coated portion on at least one surface of a cathode current collector, an anode including an anode active material coated portion on at least one surface of an anode current collector, and a separator disposed therebetween are wound and an electrolyte are accommodated in a battery case, and at least one of a cathode lead coupled to a cathode uncoated portion and an anode lead coupled to an anode uncoated portion includes a first metal layer used for coupling with an electrode uncoated portion and/or coupling with a battery case and a second metal layer having a relatively lower resistance than that of the first metal layer, wherein the first and second metal layers are coupled to each other.

Present invention relates to an electric double-layer capacitor having positive and negative electrodes containing nonporous carbon as an electrode active material. In the nonporous carbon, multiple layers of graphene having an average interplanar spacing d₀₀₂ of 0.350 to 0.380 nm have been grown well. The positive and negative electrodes are impregnated with an electrolyte solution. The nonporous carbon is obtained by activating easily graphitizable carbon, which in turn is obtained by calcining needle coke or pitch made infusible. The elctrolyte solution is either a liquid electrolyte having a planar molecular structure or an electrolyte solution consisting of a liquid electrolyte dissolved in an organic solvent.

Provided is a non-aqueous secondary battery that uses a lithium-containing metal oxide that contains manganese as a positive electrode active material, and wherein a small internal resistance and a high electric capacity can be maintained even after high-temperature storage or charge and discharge at high temperatures, by suppressing elution of manganese from the positive electrode active material. Specifically provided is a non-aqueous electrolyte secondary battery with a negative electrode capable of intercalating and deintercalating lithium ions, a positive electrode with a lithium-containing compound as the positive electrode active material, and a non-aqueous electrolyte that has lithium salt dissolved in an organic solvent. Said non-aqueous electrolyte secondary battery is characterized by the lithium-containing compound being a lithium-containing metal oxide compound that contains manganese and by the non-aqueous electrolyte containing a fluorosilane compound indicated by general formula (1). (In the formula, R¹ to R³ independently represent an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, an aryl group having 6 to 8 carbon atoms, or a fluorine atom, and R⁴ represents an alkylene group having 1 to 8 carbon atoms or an alkylene group having 4 to 8 carbon atoms and having an ether group.)

The present invention discloses:

a membrane for fuel cell, comprising:

• • a solid polymer electrolyte membrane composed of a crosslinked ion exchange resin, and
  • a polymer having a weight-average molecular weight of 5,000 to 1,000,000 and having a charge group of polarity opposite to that of the ion exchange group of the ion exchange resin, which polymer is adhered onto at least one surface of the solid polymer electrolyte membrane in an amount of 0.0001 to 0.5 mg/cm² preferably in a state that, when the membrane for fuel cell is immersed in a 50 mass % aqueous methanol solution of 30° C., there is substantially no difference in the adhesion amount of the polymer before and after the immersion; and

a membrane-electrode assembly for fuel cell, comprising:

the above-mentioned membrane for fuel cell, and

a catalyst electrode layer bonded to the membrane for fuel cell, which catalyst electrode layer contains an ion exchange resin having the same polarity as the crosslinked ion exchange resin composing the solid polymer electrolyte membrane, and a catalyst substance.

The invention relates to a polyethylene heat shrinkable film gravure printing process which comprises the following steps of: (1) unwinding a polyethylene heat shrinkable film; (2) carrying out unwinding drawing; (3) carrying out inking by a drop roller; (4) scraping ink by a scraper; (5) carrying out gravure printing; (6) drying ink; (7) cooling a printed object; (8) carrying out multiple color class overprinting, wherein the steps (3), (4), (5), (6) and (7) are sequentially repeated; (9) carrying out winding drawing; (10) winding; (11) checking the quality; (12) stripping; (13) sealing and cutting; and (14) carrying out finished product packaging to obtain a finished product, wherein when the step (6) is implemented, the ink printed on the surface of the polyethylene heat shrinkable film is dried by modes of feeding hot blast by an air blower and circulating the hot blast by a drying box and related equipment comprises an air energy heating device, the air blower, an external heating box, a suction fan and the drying box with an effect of an air chipper. The polyethylene heat shrinkable film gravure printing process is used for carrying out gravure printing on the polyethylene heat shrinkable film.

The purpose of the present invention is to provide a lithium-ion secondary battery with small internal resistance, excellent load characteristics and low reduction in capacitance due to repeated discharge and charge.

The lithium-ion secondary battery of the present invention attaining the above purpose comprises a positive electrode, negative electrode and electrolyte; said positive electrode and negative electrode are configured by binding an active material layer, including an electrode active material and a binder, to a collector; the binder used for at least one of the positive electrode or negative electrode includes polymer particles; and the polymer particles satisfy the following properties:

• • swelling degree in the electrolyte of a sheet-like molded body, obtained by pressure molding of only the polymer particles, is 5 to 50%, and lithium ion conductivity of the sheet-like molded body swollen by the electrolyte is 1×10⁻⁴ S·cm or more.