Patents Issued in June 21, 2007
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Publication number: 20070138971Abstract: An AC-to-DC voltage converter as power supply for lamp converts an AC input voltage to a constant DC voltage at predetermined value set by potentiometer. The converter includes input power supply 210, input protection circuit 201, EMI filter 202, rectifier 203, filter 204, converter 206, output filter 214, lamp 211, start circuit 208, control circuit 209, biasing circuit 212, sampling circuit 207, output protection circuit 200, feedback and dimming circuit 205 and input monitor circuit 213. This version is a flyback converter; versions from other topologies etc are also provided. The converter has feedback function that can regulate output voltage at predetermined value. The converter has dimming function and can adjust lamp brightness for conformability. The output constant brightness decreases peoples' eyes fatigue to minimum level.Type: ApplicationFiled: February 15, 2007Publication date: June 21, 2007Inventor: Liang Chen
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Publication number: 20070138972Abstract: The invention relates to a ballast for a high-pressure discharge lamp, in particular for a motor vehicle headlight lamp or a projection lamp, which ballast is, according to the invention, in the form of a Class E converter.Type: ApplicationFiled: July 23, 2004Publication date: June 21, 2007Applicant: Patent-Treuhand-Gesellschaft Fur Elektrisch Gluhlampen MBHInventor: Bernhard Siessegger
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Publication number: 20070138973Abstract: An improvement to a digital integrated circuit of the type having a functional circuit that is susceptible to damage from an electrostatic discharge. An electrostatic discharge protection element is placed in series with the functional circuit and disposed upstream in a normal direction of current flow from the functional circuit. The electrostatic discharge protection element includes at least one of a resistive choke that exhibits thermal runaway and an inductive choke.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Inventors: William Loh, Choshu Ito, Jau-Wen Chen
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Publication number: 20070138974Abstract: An interface (12) for a lamp operating device (13) has two input-side terminals (1, 2) for the connection of bus lines or for connection with a button or switch, an evaluation logic (3) for the processing of signals present at the input-side terminals (1, 2) and for the generation of output-side signals for the control of the lamp operating device (3), and at least one electrical isolation element (4) to electrically decouple the input-side terminals (1, 2) from the lamp operating device (13). Thereby, the evaluation logic (3) is arranged on that side of the electrical isolation element (4) which is towards the input-side terminals (1, 2), and is supplied with voltage via the input-side terminals (1, 2) of the interface (12).Type: ApplicationFiled: June 23, 2004Publication date: June 21, 2007Inventor: Reinhold Juen
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Publication number: 20070138975Abstract: In a discharge lamp lighting apparatus, a power supplied to a discharge lamp La through a DC-DC converter 1 and an inverter 2 is controlled depending on detection results of a lamp voltage detection unit 6 and a lamp current detection unit 7, and in an electrode heating period an alternation time of an output to the discharge lamp when starting actuation of the discharge lamp is set longer than an alternation time in a steady lighting period, and the alternation time in the electrode heating period is increased depending on lowering of a supply power or current to the discharge lamp. Thus, even when a lamp current is suddenly changed, the discharge lamp is prevented from going off at the time of polarity inversion without lowering a life.Type: ApplicationFiled: December 22, 2004Publication date: June 21, 2007Applicant: MATSUSHITA ELECTRIC WORKS, LTD.Inventors: Kazutoshi Suganuma, Takashi Kanbara, Toshifumi Tanaka
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Publication number: 20070138976Abstract: A dielectric barrier discharge lamp drive circuit having a thickness so that sufficient mechanical strength of a glass plate is obtained and a relatively large illumination area. The drive circuit is driven at low voltage and reduces apparent current. The drive circuit applies a high frequency power to a flat panel discharge lamp (19) with a reactor (32). In a lighted state, a state close to a series resonance of the inductance of the reactor and an electrostatic capacity of the glass plate (11, 12) is set. The inductance value of the reactor is selected so that the frequency of the high frequency power is slightly smaller than the series resonance frequency, and the impedance of the load as viewed from an AC source (31) is set to the rated impedance. A high light emitting efficiency is obtained in such a configuration when Xe (xenon) gas that does not cause environmental problems is used as the discharge gas.Type: ApplicationFiled: January 7, 2005Publication date: June 21, 2007Applicant: LECIP CORPORATIONInventor: Makoto Noda
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Publication number: 20070138977Abstract: A detector circuit monitors the phase relationship between the lamp voltage and the excitation voltage, and if one or more conditions are met, triggers the open lamp protection process in a discharge lamp system. The detection circuit can be incorporated into a lamp voltage feedback circuit and implemented on the integrated circuit level with less cost and circuit complexity.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Applicant: Monolithic Power Systems, Inc.Inventors: Yuancheng Ren, Kaiwei Yao, Wei Chen
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Publication number: 20070138978Abstract: A light fixture converts source light from one or more solid state light emitting elements to a virtual light source output. An optical element receives and diffuses light from the solid state emitters to form a processed light for the virtual source output. The optical element forms light that is relatively uniform, for example having a substantially Lambertian distribution and/or having a maximum-to-minimum intensity ratio of 2 to 1 or less over the optical area of the virtual source. In the examples, the diffuse optical processing element comprises a cavity having at least one diffusely reflective surface, and the emitting elements supply light into the cavity at locations that result in reflection and diffusion before emission through an aperture of the cavity. The aperture or a downstream processing element appears as the virtual source of the processed light from the cavity.Type: ApplicationFiled: November 2, 2006Publication date: June 21, 2007Inventors: Jack Rains, Don May, David Ramer
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Publication number: 20070138979Abstract: An LED illumination unit, a projection display device using the LED illumination unit, and a method of operating the LED illumination unit are provided. The LED illumination unit includes a light source with a plurality of LEDs, and a lighting control unit which sequentially turns on the LEDs for lighting time sections which are assigned for each LED in a cyclic time period. The lighting control unit includes a driving signal modulator which generates a modulation signal for turning on at least one of the LEDs with a lighting duty that is shorter than the lighting time section for the at least one of the LEDs. The method includes sequentially turning on a plurality of LEDs of the LED illumination unit for lighting time sections which are assigned for each LED in a cyclic time period. At least one of the LEDs is turned on with a lighting duty that is shorter than its lighting time section.Type: ApplicationFiled: December 19, 2006Publication date: June 21, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sachiyo Yamada, Tsutomu Nishida
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Publication number: 20070138980Abstract: A linear accelerator having cast dielectric composite layers integrally formed with conductor electrodes in a solventless fabrication process, with the cast dielectric composite preferably having a nanoparticle filler in an organic polymer such as a thermosetting resin. By incorporating this cast dielectric composite the dielectric constant of critical insulating layers of the transmission lines of the accelerator are increased while simultaneously maintaining high dielectric strengths for the accelerator.Type: ApplicationFiled: November 14, 2006Publication date: June 21, 2007Inventors: David Sanders, Stephen Sampayan, Kirk Slenes, H.M. Stoller
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Publication number: 20070138981Abstract: The invention relates to an apparatus for controlling an energy flow between a solar energy source and an electric motor. An electrical circuit having an energy flow control device is arranged between the input side and the output side. In accordance with one aspect of the invention, the circuit has an energy store, which is connected to the energy flow control device. This energy flow control device is designed to pass energy stored in the energy store to the motor in the event of a predetermined first voltage threshold of the energy store being exceeded. The invention also relates to a solar energy source having a corresponding apparatus and to a method for controlling an energy flow.Type: ApplicationFiled: November 27, 2006Publication date: June 21, 2007Inventors: Franz Roecker, Prasit Sakwilawan
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Publication number: 20070138982Abstract: A device for the feeding of auxiliary operating facilities for a fuel-electrically driven vehicle with a combustion engine is stated, which device comprises a generator driven by the combustion engine and a rectifier connected with a generator on the AC voltage side, wherein the rectifier on the DC voltage side is connected with a first and a second connection of a DC voltage circuit. Alternatively, first and second rectifiers connected with the generator on the AC voltage side can be provided, wherein the first rectifier is connected on the DC voltage side with a first and a second connection of a first DC voltage circuit and the second rectifier on the DC voltage side with a first and a second connection of a second DC voltage circuit.Type: ApplicationFiled: February 16, 2007Publication date: June 21, 2007Applicant: ABB SCHWEIZ AGInventors: Beat Guggisberg, Vishal Bisen
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Publication number: 20070138983Abstract: A three-phase direct-current motor is controlled by cyclically repeating three first switching states. In each of the three first switching states, one of the three phases of the direct-current motor is periodically switched over between a first and a second input voltage, whereas the two other phases are continuously connected to the first input voltage.Type: ApplicationFiled: December 8, 2004Publication date: June 21, 2007Inventors: Pietro De Filippis, Ralf Hochhausen, Jorg Seyfarth
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Publication number: 20070138984Abstract: A driving circuit of a fan includes a magnetic pole sensor for generating a magnetic pole sensing signal, a first waveform generator coupled to the magnetic pole sensor for generating a first waveform according to the magnetic pole sensing signal, a second waveform generator for generating a second waveform, a comparison circuit coupled to the first waveform generator and the second waveform generator for comparing the first waveform and the second waveform for generating a third waveform, a control signal generator coupled to the comparison circuit for generating a control signal according to the third waveform and an external signal, and a current generator coupled to the magnetic pole sensor and the control signal generator for outputting current to a coil of a stator of the fan according to the magnetic pole sensing signal and the control signal.Type: ApplicationFiled: February 9, 2006Publication date: June 21, 2007Inventors: Chih-Shih Yang, Kung-Ching Hung
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Publication number: 20070138985Abstract: A method for selectively operating an electric motor in one of a first pole configuration and a second pole configuration is provided. The first pole configuration has a first phase winding structure, a second phase winding structure and a third phase winding structure. The method includes energizing each of the first phase winding structure, the second phase winding structure and the third phase winding structure to operate the electric motor in the first pole configuration. The first phase winding structure is reconfigured to form a first phase, a second phase and a third phase of the second pole configuration. The first phase winding structure is energized and each of the second phase winding structure and the third phase winding structure is de-energized to operate the electric motor in the second pole configuration.Type: ApplicationFiled: December 19, 2005Publication date: June 21, 2007Inventors: Bruce Ley, Michael Barone
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Publication number: 20070138986Abstract: A high-level ECU generates a torque command value T1 according to an output request to an electric motor. A low-level ECU calculates a torque command value T2 for correcting the original torque command value T1 according to the operational state of the electric motor and, according to a final torque command value Tf that is set by combining the torque command values T1 and T2, the electric motor is controlled. The high-level ECU receives from the low-level ECU the torque command value T2 and a motor state quantity transmitted thereto and, by a comparison between an actual torque value Tj determined from the motor state quantity and the final torque command value Tf determined with the torque command value T2 reflected thereto, abnormality in electric motor control is detected.Type: ApplicationFiled: December 12, 2006Publication date: June 21, 2007Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Kutsuna, Masaki Okamura, Kenji Yamada
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Publication number: 20070138987Abstract: An oscillation frequency selecting section selects any of a first oscillation section and a second oscillation section, depending on whether a signal of a current-passage direction switching section is a forward rotation signal or a brake signal. When the second oscillation section has an oscillation frequency lower than that of the first oscillation section, noise and vibration can be reduced by, for example, selecting the first oscillation section during forward rotation, and the second oscillation section during braking.Type: ApplicationFiled: December 13, 2006Publication date: June 21, 2007Inventors: Hideki Nishino, Kiyotaka Tanimoto, Taishi Iwanaga
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Publication number: 20070138988Abstract: A centrifuge including: a rotor rotating with a sample contained therein; a rotating shaft rotatably engaged with the rotor; a motor rotating the rotor and the rotating shaft; a belt transmitting rotational force of the motor to the rotating shaft; a rotor speed detecting unit detecting a rotation speed of the rotor; a motor speed detecting unit detecting a rotation speed of the motor; and a control unit controlling the motor, wherein the control unit calculates a signal for controlling the rotation speed of the rotor on the basis of a signal from the rotor speed detecting unit and controls the motor on the basis of a signal from the motor speed detecting unit and the calculated signal.Type: ApplicationFiled: November 29, 2006Publication date: June 21, 2007Inventors: Hiroyuki TAKAHASHI, Takahiro Fujimaki, Hisanobu Oyama
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Publication number: 20070138989Abstract: A fixed-position stop control apparatus (10) includes: a move-instruction generating means (22) for generating a move instruction for each control cycle; a position loop control means (25) for position controlling a rotation shaft (61) for each control cycle according to the move instruction generated by the move-instruction generating means; and a speed loop control means (35) for speed controlling the rotation shaft according to one of a speed instruction generated by a higher level control apparatus (45) and a predetermined speed instruction, thereby switching the speed control of the rotation shaft by the speed loop control means to the position control of the rotation shaft by the position loop control means. In this fixed-position stop control apparatus, the move instruction generated by the move-instruction generating means has acceleration smaller than the acceleration corresponding to the acceleration and deceleration ability of the rotation shaft.Type: ApplicationFiled: December 12, 2006Publication date: June 21, 2007Applicant: FANUC LTDInventors: Yasusuke IWASHITA, Takahiro AKIYAMA, Masakazu NIWA
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Publication number: 20070138990Abstract: A controller for motor activation providing accurate and repeatable position changes by pressing and releasing a push button switch. Repeatable position changes are made in an advance direction by triggering a digital counter for a predetermined number of cycles of a reference clock signal. Backlash in retard motion of the motor is reduced by similarly asserting a retard motor input for an amount of time determined by another digital counter with a following advance correction made automatically after the retard signal is applied, by applying a predetermined retard-advance movement amount, as again counted by a digital counter. The advance binary amount, the retard binary amount and the retard-advance binary amount of set through binary switch inputs to respective counters to count the respective time periods (TG3, TG1, and TG2).Type: ApplicationFiled: February 8, 2007Publication date: June 21, 2007Inventors: Clarence Lewis, Dina Lewis
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Publication number: 20070138991Abstract: There is provided a pivoting apparatus of an industrial robot including: a brake 40 that is fixed to a motor shaft 30s of a motor 30 to halt the motor 30; an encoder 50 that is fixed to the motor shaft 30s to detect the pivoting angle of the motor 30; a speed reducer 60 that is coupled with the motor shaft 30s to form a communicating hollow portion, that is fixed to and coupled with a pivoting-side arm 20, and that reduces the rotation speed of the motor 30; a pipe-supporting bearing 72 that is provided in a fixed-side arm 10 and that is communicated with the communicating hollow portion; and a low-speed pivoting pipe 70 whose one end is fixed to and coupled with the pivoting-side arm 20 and the other end of which is fixed to the pipe-supporting bearing 72, and through which a cable 80 is wired.Type: ApplicationFiled: December 1, 2006Publication date: June 21, 2007Inventors: Yoshitaka Kumagai, Tomoyuki Kobayashi
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Publication number: 20070138992Abstract: A medical robotic system has a joint coupled to medical device or a slave manipulator or robotic arm adapted to hold and/or move the medical device for performing a medical procedure, and a control system for controlling movement of the joint according to user manipulation of a master manipulator. The control system includes at least one joint controller having a sliding mode control for reducing stick-slip behavior on its controlled joint during fine motions of the joint. The sliding mode control computes a distance to a sliding surface, computes a reaching law gain, and processes the distance and reaching law gain to generate a sliding mode control action that is in absolute value less that a maximum desired feedback control action. The sliding mode control action is then further processed to generate a feedback torque command for the joint motor.Type: ApplicationFiled: December 20, 2006Publication date: June 21, 2007Applicant: Intuitive Surgical INC.Inventors: Giuseppe Prisco, David Larkin
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Publication number: 20070138993Abstract: In a direct-current voltage-driven magnetic contactor, a main contact is in an open circuit condition in an attraction period of an initial period of excitation by an operating coil, and in a closed circuit condition in a subsequent holding period, and a drive circuit includes a direct-current power supply voltage detecting circuit that gives a start signal when an applied voltage of a exciting direct-current power supply exceeds a predetermined value, a first drive circuit that makes a starting semiconductor switching element perform an ON operation on receiving the start signal, and a second drive circuit that makes a current limiting semiconductor switching element perform a switching operation when a terminal voltage of a charging capacitor reaches the predetermined value.Type: ApplicationFiled: August 10, 2004Publication date: June 21, 2007Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Tetsuo Tanaka, Tarou Andou, Tsuyoshi Sekiguchi
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Publication number: 20070138994Abstract: A driving circuit of an AC fan motor has an AC to DC converter, a current detecting unit, a step-down divider, a motor driving unit, two windings each having many coils and a harmonic wave elimination unit. The AC to DC converter converts AC power to high voltage DC power. The motor driving unit is connected to the step-down divider to obtain low voltage DC power to operate. The two windings are directly connected to the AC to DC converter through the current wave detect unit to obtain the high voltage DC power. Therefore, the current wave detecting unit can response current changes of windings and then an operator can simulate present current wave of the windings to determine the present operating status of the AC fan motor.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Applicant: ADDA CORP.Inventor: Hsin-Mao Hsieh
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Publication number: 20070138995Abstract: This method maintains a direct voltage at the input of a DC/AC voltage converter in order to maintain an asynchronous motor in a magnetised state, the input of the converter being connected to a DC supply bus of an electric vehicle, and comprises, in a free wheel mode during which the vehicle coasts and the bus is disconnected from a catenary: a) a step (76) for magnetising the motor, then b) a step (78) for operating the motor as a generator of alternating voltage, then c) a step (72) for stopping the converter when the direct voltage of the bus reaches an upper threshold, then d) a step (74) for maintaining the converter in the idle state as long as the direct voltage of the bus remains higher than a minimum direct magnetisation voltage of the asynchronous motor.Type: ApplicationFiled: November 21, 2006Publication date: June 21, 2007Applicant: ALSTOM Transport SAInventor: Pierre Chanal
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Publication number: 20070138996Abstract: A new charger wherein a reference voltage can be set therein. The charger charges a secondary battery via a DC/DC converter that has an arrangement in which a fuel cell, a solar cell or the like having a relatively large output impedance during power supply is used as an input source (Vfc) and an input power is kept constant. The secondary battery (B) is connected to a control circuit (10), and a constant power reference voltage control circuit (20) is connected between the current control circuit and an input of the charger. When the output of the charger is drooping, the constant power reference voltage control circuit reduces the reference voltage to increase the power to be supplied, thereby providing a constant power at the voltage as defined by the output voltage stabilization control of the charger. When the input power of the charger is excessive, the constant power reference voltage control circuit increases the reference voltage to set a reference value corresponding to the power to be supplied.Type: ApplicationFiled: February 14, 2005Publication date: June 21, 2007Applicant: Shindengen Electric Manufacturing Co., Ltd.Inventor: Kimiyoshi Kobayashi
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Publication number: 20070138997Abstract: A motor vehicle charging system wherein at least one diode is electrically connected between the rechargeable battery and the voltage regulator. The diode(s) is/are biased to permit current flow from the battery to the voltage regulator. The diode(s) and the battery are arranged so that the diode(s) and the battery experience substantially the same ambient temperature.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventor: Ahmed Lawahmeh
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Publication number: 20070138998Abstract: A controller and method for controlling output of a rechargeable battery that prevents the life span of the rechargeable battery from being shortened while ensuring starting of the engine. The rechargeable battery controller is mounted on a vehicle including an engine functioning as a power source. The controller includes a control unit for instructing a vehicle ECU, which is installed in the vehicle, to stop discharging the rechargeable battery when an index indicating the charged state of the rechargeable battery satisfies a discharge suspension condition. The control unit includes a monitor unit for changing the discharge suspension condition so as to continue discharging the rechargeable battery continues when the rechargeable battery is expected to supply power to the starter motor of the engine.Type: ApplicationFiled: December 15, 2006Publication date: June 21, 2007Applicant: PANASONIC EV ENERGY CO., LTD.Inventors: Kouta Togashi, Takuma Iida
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Publication number: 20070138999Abstract: When unauthorized use of a device is suspected, a recharging mechanism (e.g., recharge-circuit) of the device is disabled in order to guard against extended unauthorized use of the device. The recharging mechanism normally recharges the rechargeable-power-supply that powers the device. Consequently, normal use and enjoyment of the device can be significantly reduced by disabling the rechager. Moreover, for devices that are mainly powered by a rechargeable-power-supply (e.g., music-players, phones, Personal Digital Assistants), disabling the recharger effectively renders the device inoperable when the power of the main power-supply has run out. As such, disabling the recharger should serve as a deterrent to theft.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: Michael Lee, Jay Hamlin, Brian Lemker
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Publication number: 20070139000Abstract: An electric power supply system includes an electric power reception apparatus and an electric power supply apparatus adapted to supply electric power to the electric power reception apparatus when the electric power reception apparatus is placed on the electric power supply apparatus. The electric power supply apparatus includes a plurality of electric power supply units adapted to supply electric power by electromagnetic induction to the electric power reception apparatus. A selection unit of the electric power supply apparatus selects, from the total plurality of electric power supply units, a plurality of electric power supply units whose location corresponds to a position where the electric power reception apparatus is placed, and a control unit controls the supply of electric power such that electric power is supplied to the electric power reception apparatus from the selected plurality of electric power supply units.Type: ApplicationFiled: November 6, 2006Publication date: June 21, 2007Inventors: Yosuke Kozuma, Shinpei Nishikawa, Shinji Kimura, Yusuke Hori, Goro Mikano, Yuuki Iwasaki, Shigetoshi Onitsuka
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Publication number: 20070139001Abstract: The invention relates to a battery comprising an electrically non-conductive substrate (1) on which it is arranged, in addition to at least one cathode (4), one anode (6), and a separator/electrolyte layer (5) in the form of layers or films that are pre-formed from an electrochemically active or activatable material and optionally a polymer matrix and/or other auxiliary substances, in a corresponding sequence on the substrate (1). The layer thickness of each electrode layer is 10 ?m. The inventive battery also comprises at least one current diverter (7) and at least one battery contact (2, 2a, 2b) that are respectively in electrical contact with an electrode. Said battery is characterised in that it comprises at least one first covering layer (8, 16, 17, 21) consisting of a first, electrically insulating material that is stable in relation to the used electrolyte and electrode material and has been deposited from the gas phase or in the form of a liquid or viscous paste.Type: ApplicationFiled: October 4, 2004Publication date: June 21, 2007Inventor: Robert Hahn
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Publication number: 20070139002Abstract: A battery charger for a personal electronic device comprising: a housing, a battery energy storage unit, a battery charging circuit, an electric power converting circuit, at least one power input portion and at least one power output portion. The at least one power input portion includes a plug or socket for connecting to a socket of A.C. source, and a D.C. socket that can be connected to a computer through a USB interface for charging the battery charger. The power output portion has an interface able to connect to a mobile phone or electronic device for charging the latter. The power output portion can also design as a socket, and disposited at the same position on the housing with the D.C. socket of power input portion. The battery charger can be connected to a personal miniature electronic device, such as a mobile phone, a digital camera or an MP3 player, for charging the device by using the battery energy storage unit as an energy source.Type: ApplicationFiled: July 12, 2006Publication date: June 21, 2007Inventors: Mo-Lin Chao, Ching-Cheng Kao
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Publication number: 20070139003Abstract: Described is a system and, in particular, to a wearable battery system for a terminal. The system may include a battery and a harness holding the battery in proximity to a body of a wearer of the harness. The battery and harness are worn underneath an outer garment thereby preventing a temperature of the battery from reaching an ambient temperature of an environment in which the wearer is located.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventor: Chris Paul
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Publication number: 20070139004Abstract: A charger comprises a first charging terminal that contacts one of positive and negative terminals of a rechargeable battery to charge the battery; and a second charging terminal that is opposite in polarity to the first charging terminal electrically connected to a charging circuit. The first charging terminal has a nip portion that is formed by bending a metal plate in a folding manner such that parts of the metal plate are opposed. A temperature sensor is disposed in the nip portion. The temperature sensor disposed in the nip portion detects the battery temperature through the intermediary of the metal plate of the first charging terminal in contact with the terminal of the rechargeable battery.Type: ApplicationFiled: September 26, 2006Publication date: June 21, 2007Inventor: Eiji Satsuma
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Publication number: 20070139005Abstract: A power supply device and a method for controlling the power supply device in which a fusion checking process for the cathode side relay and the anode side relay is easily performed within a short period of time. A battery ECU (controller) measures a first voltage between a high potential output terminal and an anode terminal of the rechargeable battery when a cathode side relay arranged between the high potential output terminal and a cathode terminal of the rechargeable battery and an anode side relay arranged between a low potential output terminal and the anode terminal of the rechargeable battery are open to determine whether or not a cathode side relay is fused. The battery ECU also measures a second voltage between the low potential output terminal and the cathode terminal of the rechargeable battery to determine whether or not the anode side relay is fused.Type: ApplicationFiled: December 15, 2006Publication date: June 21, 2007Applicant: PANASONIC EV ENERGY CO., LTD.Inventor: Ken OSAWA
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Publication number: 20070139006Abstract: A multi battery pack system is composed of a plurality of battery packs. The master battery pack receives a total voltage from each slave battery pack and calculates a target total voltage using its total voltage and total voltages of all slave battery pack whenever a predetermined time period passes, sends the calculated target total voltage to each slave battery pack, compares the target total voltage with its total voltage, and then connects or disconnects its cell group and output terminals according to the comparison result. The slave battery packs include at least one slave battery pack, which sends its total voltage according to a request of the master battery pack, receives a target total voltage from the master battery pack, compares the target total voltage with its total voltage, and then connects or disconnects its cell group and output terminals according to the comparison result.Type: ApplicationFiled: December 15, 2006Publication date: June 21, 2007Applicant: LG CHEM. LTD.Inventors: Eguchi YASUHITO, Tanina SHOJI, Dal-Hoon LEE, Sang-Hoon LEE, Jee-Ho Kim
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Publication number: 20070139007Abstract: A battery management system is provided. A voltage of a first battery cell is charged to a capacitor. Then, the voltage of the capacitor is measured, the measured voltage being the voltage of the first battery cell. Subsequently, a voltage of a second battery cell is again charged to the capacitor while the capacitor holds the voltage of the first battery cell. The voltage of the capacitor is then measured, the measured voltage being the voltage of the second battery cell. With such a scheme, the time for discharging the capacitor may be removed, and accordingly, a period for measuring a voltage of the battery cell may become shorter.Type: ApplicationFiled: December 19, 2006Publication date: June 21, 2007Inventors: Gye-Jong Lim, Han-Seok Yun, Se-Wook Seo
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Publication number: 20070139008Abstract: Methods and systems are disclosed for charge current adjustment to enhance battery cycle life thereby allowing batteries to be charged quickly without accelerating the aging process of the battery. As the charge capacity of the battery degrades over time, the charge current for the battery charging cycles is also reduced so that the effective charge rate for the battery is adjusted to account for the reduction in charge capacity. In this way, battery capacity life is enhanced by avoiding an accelerated charge rate as the battery capacity drops over the operational life of the battery. The methods and systems disclosed are useful for battery-powered information handling systems, as well as other devices where fast charging and long cycle life is desirable, such as cell phones, personal digital assistants (PDAs), electric vehicles and/or any other battery powered devices.Type: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Inventors: Stephen Sterz, Ligong Wang
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Publication number: 20070139009Abstract: A charge method for charging a battery is provided. The method involves, in a first charge stage, applying a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the battery; in a second charge stage following the first charge stage, applying a second power having a second charge current in pulse form with the first frequency and a second charge voltage to charge the battery; in a third charge stage following the second charge stage, applying a third charge power having a third charge current in pulse form with the first frequency and a third charge voltage to charge the battery; in a fourth charge stage following the third charge stage, applying a fourth charge power having a fourth charge current in pulse form with the first frequency and a fourth charge voltage to charge the battery.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventor: Sheng-Chan Lin
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Publication number: 20070139010Abstract: A system for charging a battery is described. The system includes a direct current (DC) power source configured to supply a DC power source output signal, a converter configured to convert the DC power source output signal into a converter output signal, a battery coupled to the converter and having a plurality of terminals, and a controller configured to receive a measure of a terminal charge across the terminals and configured to adjust a power that charges the battery based on the terminal charge.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: William Bonneau, Sherrill Thomas, Brian Meyer
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Publication number: 20070139011Abstract: A charge circuit having multi charge stages for charging at least one battery includes: a first current generating circuit for generating a first charge power having a first charge current in pulse form with a first frequency and a first charge voltage to charge the at least one battery; a voltage generating circuit connected to the first current generating circuit for controlling the first charge power having a first charge current in pulse form with a first frequency and a first charge voltage; a voltage control circuit connected to the voltage generating circuit for generating a first constant voltage and/or a second constant voltage; and a second current generating circuit connected to the voltage generating circuit for generating a variant power comprising a variant current in pulse form with a second frequency wherein a charge voltage included in the variant power varies with the second frequency.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventor: Sheng-Chan Lin
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Publication number: 20070139012Abstract: A fast charge configuration for a power supply includes a serial connection to a pair of batteries each having an output that is half that required by the device, such as the electric vehicle, in which the batteries are to be used.Type: ApplicationFiled: October 31, 2006Publication date: June 21, 2007Applicant: AeroVironment, Inc.Inventor: Larry Hayashigawa
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Publication number: 20070139013Abstract: The present invention relates to a state of charge (SOC) compensation method of a battery and a battery management system using the SOC compensation method. The charge and discharge current of the battery is used to calculate a first SOC and a first voltage corresponding to the first SOC, the charge and discharge current of the battery, the battery pack voltage, and an internal resistance of the battery are used to calculate a rheobasic voltage of the battery, an integration error corresponding to a difference between the first voltage and the rheobasic voltage is calculated, and a SOC compensation factor corresponding to the error is added to or subtracted from the first SOC to determine a more accurate SOC of the battery.Type: ApplicationFiled: December 19, 2006Publication date: June 21, 2007Inventors: Se-Wook Seo, Han-Seok Yun, Gye-Jong Lim
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Publication number: 20070139014Abstract: An electronic device (e.g., computer system, etc.) employing dynamic power management of the present invention adjusts power consumption in accordance with an analysis of parameters and events occurring over one or more time-periods. Preferably, the electronic device monitors microprocessor, operating system, peripheral and/or device-level events and adjusts run-time parameters, such as microprocessor clock frequency and voltage, to reduce power consumption with minimal perceived degradation in performance.Type: ApplicationFiled: August 8, 2006Publication date: June 21, 2007Inventors: Andrew Girson, Boris Donskoy, Nathan Tennies
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Publication number: 20070139015Abstract: The present invention relates to a state of charge (SOC) compensation method for a vehicle using electrical energy, and a battery management system using the SOC compensation method. To determine the SOC of the battery, charge and discharge current of the battery is used to calculate a first SOC of the battery and a first corresponding voltage, a rheobasic voltage is calculated, an integration error corresponding to a difference between the first voltage and the rheobasic voltage is calculated, a SOC compensation factor is added to the first SOC when the integration error is greater than a first threshold value, and a SOC compensation factor is subtracted from the first SOC when the integration error is less than a second threshold value.Type: ApplicationFiled: December 14, 2006Publication date: June 21, 2007Inventors: Se-Wook Seo, Han-Seok Yun, Gye-Jong Lim
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Publication number: 20070139016Abstract: A method for determining whether a battery is electrically and physically connected to a battery charger includes monitoring a battery charging voltage supplied by a battery charger that has superimposed a known signal on the battery charging voltage, and determining that the battery charger is connected when the known superimposed signal is present and that the battery charger is not connected when the known superimposed signal is absent.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: Joe Lambert, Brian Meyer, John Harrison, Sherrill Thomas
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Publication number: 20070139017Abstract: A system for approximating a temperature of a battery includes a sensor configured to provide a temperature measurement of the ambient air, a sensor configured to provide a voltage measurement of the battery, a sensor configured to provide a current measurement of the battery, and signal processing circuitry configured to determine an approximate battery temperature as a function of the measured ambient air temperature, the measured voltage of the battery, and the measured current of the battery.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventors: David Marchand, John Szentes, David Orr, John Bernardi
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Publication number: 20070139018Abstract: A device, system and method for a backup power supply are disclosed herein. The backup power supply may use at least one ultra capacitor to store a voltage. The backup power supply may also have a multiphase boost converter to provide a relatively constant voltage from the stored voltage and a constant changing power filter to regulate a current that is used to charge the ultra capacitor. A charging and discharging controller may be used to monitor the status of a power supply and control the charging and discharging of the ultra capacitors.Type: ApplicationFiled: December 11, 2006Publication date: June 21, 2007Applicant: RAM Technologies LLCInventor: Richard Mentelos
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Publication number: 20070139019Abstract: Power balancing techniques for a synchronous power generation system are provided. One exemplary method for balancing power in a synchronous generator system includes determining an output power characteristic of a synchronous generator driven by a prime mover and comparing the characteristic to a value derived from the output power of a plurality of synchronous generators. The method also includes providing a correction signal to the synchronous generator to modify the output power produced by that generator. A synchronous power generation system having a plurality of synchronous generators driven by a common prime mover is also provided.Type: ApplicationFiled: December 16, 2005Publication date: June 21, 2007Inventors: Herman Wiegman, Luis Garces
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Publication number: 20070139020Abstract: An information handling system includes a power converter having a first switched inductor to supply current to a load. A second switched inductor is inductively coupled to the first switched inductor. A control circuit activates the second switched inductor in response to a change in the power requirements of the load, so as to remove energy stored in the first switched inductor and thereby regulate the output voltage of the power converter when load current is stepped downwards.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Applicant: Dell Products L.P.Inventors: Brian Johnson, Daniel Jenkins