Abstract:
PROBLEM TO BE SOLVED: To further reduce circuit scales and power consumption in a comparison operation amplification circuit and an AD conversion circuit. SOLUTION: A sample and hold circuit 503, regarding a differential analog signal pair to be A/D converted, outputs output signal pairs in time division in a hold mode by using a plurality of sample and hold circuits and a signal selection circuit. In A/D conversion adopting no holding system, the comparison operation amplification circuit 501 outputs a plurality of amplified output signal pairs in time division by amplifying a difference between each output signal pair and each differential reference signal pair by each differential amplification circuit while switching a plurality of output signal pairs supplied in time division by the signal selection circuit so that a plurality of differential reference signal pairs may be processed in time division. A digital data acquisition part 6 acquires digital data by respectively binarizing the differences of the plurality of amplified output signal pairs supplied in time division. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a positive electrode material capable of suppressing a decomposition reaction of an electrolyte even in a high-temperature environment; and to provide a positive electrode and a battery using it. SOLUTION: Positive electrodes 21 and negative electrodes 22 are stacked by interposing electrolyte layer 24 therebetween. The positive electrode 21 contains this positive electrode material having a coating part containing phosphazene at least in a part of a surface of a positive electrode active material. Thereby, the stability of the positive electrode 21 is improved and the decomposition reaction of the electrolyte is suppressed even in a high-temperature environment. A mass ratio of the phosphazene constituting the coating part to the positive electrode active material (phosphazene : positive electrode active material) is preferably in the range of 0.5:99.5 to 10:90. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a battery which can suppress bulging by both overcharge and over-discharge. SOLUTION: Counter arrangement of a positive electrode 21 and a negative electrode 22 is carried out through a separator 23. An electrolyte layer 24 becomes gelatinous including an electrolyte and a high-molecular weight compound. The positive electrode 21 includes a composite oxide containing a lithium and a nickel. Therefore, the bulging of the battery by the over-discharge is suppressed. Moreover, the separator 23 is formed by uniaxial stretching. Consequently, the bulging of the battery by the overcharge is suppressed. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electrolyte and a battery capable of improving cycle characteristics after preservation at high temperature. SOLUTION: A cathode 21, an anode 22 and an electrolyte 24 are housed in a film-shaped sheathing member 30. The electrolyte 24 contains polymeric compound and electrolyte liquid in which the polymeric compound is retained, and gelatinized. The electrolyte liquid contains a solvent containing γ-valerolactone to within a range of not lower than 0.5 wt% and not higher than 10 wt%, and vinyl ethylenecarbonate to within a range of not lower than 0.5 wt% and not higher than 5 wt%. By this, the cycle characteristics, after preservation at a high temperature is improved, without lowering the initial characteristics. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enable to determine the quality as a product in the stage of composition of the positive active material and reveal the composition condition. SOLUTION: The composition of the positive active material as expressed by the composition Li x Fe 1-y M y PO 4 (where, M is at least one kind out of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B, and Nb, and 0.05≤x≤1.2, 0≤y 3 (PO 4 ) 2 .nH 2 O (n is the hydration number which is 0 to 8) and Li 3 PO 4 , and a firing process for firing a mixed material obtained in the mixing process, and the half-value width of the maximum diffraction peak of the mixed material in the X-ray diffraction using the CuKα line is 1.0° or less. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a latch circuit and an A/D converter which can secure a bandwidth, reduce an area and power of subsequent stage circuits, and obtain a high accuracy and a high-speed operation. SOLUTION: Latch circuits 130-1 to 130-5 have a plurality of input transistor pairs converting a plurality of different differential input voltage signals into differential currents to be outputted, and include a circuit in which transistors NT131 to NT133 are connected to a first terminal (drain end) of NT134 to NT136 so that a positive electrode polarity/negative polarity of the differential current signals are alternately synthesized and transition portions of the differential input voltage signals are synthesized to generate one folding differential voltage signal. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress deterioration of property of a nonaqueous electrolyte secondary battery and reduce the amount of generated gas. SOLUTION: The nonaqueous electrolyte secondary battery is formed by sealing a winding type electrode element 1 with a sheath material 2. The winding electrode element 1 is formed by winding a positive electrode and a negative electrode each having gel electrolyte layers formed on both sides thereof while interposing a separator between the positive electrode and the negative electrode. The positive electrode consists of a positive electrode collector and a positive electrode mixture layer formed on the both sides of the positive electrode collector. The negative electrode consists of a positive electrode collector and a negative electrode mixture layer formed on the both sides of the negative electrode collector. The positive electrode mixture layer consists of a lithium transition metals composite oxide, a binding agent, a conductive agent, poly (oxy-ethylene) or poly (oxy-propylene). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery having excellent high-temperature storage characteristics by suppressing a deterioration of battery characteristics even if stored in the high temperature and to provide a method for manufacturing the same. SOLUTION: The nonaqueous electrolyte battery can dope lithium/dedope the lithium, has a positive electrode 2 having a positive active material containing a lithium carbonate, a negative electrode 3 having a negative active material which can dope and dedope the lithium, and a solid electrolyte 4 having a nonaqueous solvent added with a carbamate or the like and an electrolyte salt. Thus, a decomposition of the solid electrolyte 4 by heat is suppressed by the lithium carbonate contained in the positive active material and a gas generation by heating is suppressed by the carbamate or the like added to the solid electrolyte 4. Accordingly, the deterioration of the battery characteristics due to storage in high temperatures is suppressed. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a folding circuit and an analog-digital converter which have good small signal response, can reduce a load of a clock signal, and can avoid an area increase. SOLUTION: A reference voltage generation circuit 120 which generates a plurality of different voltages as reference voltages and a plurality of amplifiers 140 which convert the reference voltages, an analog input voltage and a difference voltage into a difference current to output them are included. Output edges of the amplifiers are connected with each other, the amplifier is formed with a differential amplifier having a cascade output transistor and a switch that becomes on-state in synchronization with a control clock is provided between both sources of the cascade transistor. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To reduce variation of a parasitic capacitance caused on a connection wiring when a plurality of resistors are series-connected in an interpolation circuit. SOLUTION: An A/D converter circuit includes a plurality of folding amplifiers for generating and outputting positive-phase signals having a different phase, respectively, and negative-phase signals thereof, the interpolation circuit for generating a plurality of interpolation signals of the same phase and reverse phase from an output of the folding amplifiers, a plurality of comparators for inputting the interpolation signal generated by this interpolation circuit, and an encoder circuit 6 for encoding the output from these comparators. The interpolation circuit divides the plurality of resistors to each predetermined number, juxtaposes a plurality of resistor strings in which the predetermined number of resistors are series-connected on a straight line, connects the resistors at one end of each resistor string with each other for every two strings, respectively, and connects the resistors at the other end of each resistor string with each other for every two strings in a different combination from the combination of the two strings, respectively, thereby connecting the plurality of resistors annularly. COPYRIGHT: (C)2008,JPO&INPIT