Patents Issued in April 26, 2007
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Publication number: 20070090765Abstract: A mercury vapor discharge fluorescent lamp having a barrier layer and a phosphor layer. The barrier layer comprises yttria-coated alumina particles. The barrier layer is preferably at least 11 weight percent yttria. Preferably the yttrium-coated alumina particles are provided in an aqueous suspension and are then substantially separated from the dissolved salts therein before being combined into a coating suspension for coating the lamp.Type: ApplicationFiled: October 25, 2005Publication date: April 26, 2007Inventors: Istvan Deme, Judit Szigeti, Gabor Sajo
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Publication number: 20070090766Abstract: A load driver circuit includes an output transistor configured to drive a load. The circuit further includes a power supply, and a power supply evaluation circuit configured to sense a characteristic of the power supply, and generate a control signal in response thereto. In addition, a controller circuit is provided and is configured to drive the output transistor with a pulse width modulation signal coupled to the control terminal, wherein a duty cycle of the pulse width modulation signal is a function of the control signal of the power supply evaluation circuit.Type: ApplicationFiled: October 25, 2005Publication date: April 26, 2007Inventors: Christopher LaGrave, Raymond Notarantonio, Robert Beier
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Publication number: 20070090767Abstract: A lighting system having one three-phase AC-to-DC converter, each connected to a plurality of DC-powered electronic ballasts for operating lamps. The three-phase AC-to-DC converter uses six rectifier diodes connected in a full-wave bridge configuration, does not contain a line frequency energy storage capacitor and is typically designed to operate more than one DC-powered electronic ballast. The AC-to-DC converter may be installed in a three-pole circuit breaker case so it can be mounted in a standard breaker panel. The three-phase AC-to-DC converter provides DC power with a low level of ripple to power the DC-powered electronic ballasts. The DC-powered electronic ballasts are connected to the three-phase AC-to-DC converter using two power wires plus a protective ground. Each of the DC-powered electronic ballasts contains a filter circuit connected between the power switching circuitry and the DC power input to prevent electromagnetic interference EMI.Type: ApplicationFiled: April 6, 2006Publication date: April 26, 2007Applicant: American Electrolier, Inc.Inventor: Victor Roberts
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Publication number: 20070090768Abstract: The lighting device for a discharge lamp supplies HF pulse voltage from an HF power source circuit to an external electrode and lights an external electrode type fluorescent lamp 13 using rare gas. The fluorescent lamp 13 includes rare gas having a pressure of 120 torr or higher, and is supplied with a lamp current having a frequency in a range from 24 kHz to 34 kHz. The lighting device drives the fluorescent lamp 13 with high luminance and without flickering even under a light control is applied. Further, with the lighting device for a discharge lamp according to the embodiment of the present invention, the drive frequency of the fluorescent lamp 13 is selected from a frequency band ranging from 24 kHz to 34 kHz, in which an audible noise is not generated, in a high ratio light control mode including 100%. The drive frequency of the discharge lamp fluorescent lamp 13 is selected from a lower frequency band ranging from 20 kHz to 24 kHz, in a low ratio light control mode.Type: ApplicationFiled: June 11, 2004Publication date: April 26, 2007Applicant: Harison Tobhiba Lighting CorporationInventors: Toshiaki Shiba, Eiiji Abe
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Publication number: 20070090769Abstract: A HID dimming method and apparatus are provided. The method includes generating a dc waveform during a reduced power dimming mode of operation of the HID lamp, the reduced power dimming mode being less than the full power rating of the lamp, and driving the lamp with the dc waveform to generate a dimmed lamp output. An ac waveform may be utilized to drive the lamp during the full power mode of operation.Type: ApplicationFiled: October 24, 2005Publication date: April 26, 2007Inventors: Byron Collins, George Kiefer
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Publication number: 20070090770Abstract: A step voltage controlling device and method for High Intensity Discharge (HID) light dimming applications includes an autotransformer, voltage sensing block, current sensing block, pulse forming block, microprocessor control unit (MCU) block and plural three switch blocks which allows an instantaneous variation of the voltage applied to the load which is controlled to be synchronized with the load current zero crossing point.Type: ApplicationFiled: December 15, 2004Publication date: April 26, 2007Applicant: POWER CONTROL TECHNOLOGIES, INC.Inventor: Adrian Ionescu
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Publication number: 20070090771Abstract: An electronic stabilizer used for hand-held lamp is disclosed. The electronic stabilizer of the present invention comprises four circuits: a current overflow protection and current source noise absorption circuit, a voltage-enhancing rectification filtering circuit, a high-frequency oscillation circuit and a harmonic oscillation output circuit. The current overflow protection and current source noise absorption circuit can protect against current overflow and current source noises. The voltage-enhancing rectification filtering circuit may covert the AC to DC after rectifying and filtering out the current. Next, the DC is fed to the high-frequency oscillation circuit, which may convert the DC to rectangular wave signals. Then, the harmonic oscillation output circuit converts these rectangular wave signals into sine wave (near sine wave) signals. Now, the sine wave signals may light up one or more fluorescent lights and may enable these fluorescent lights to give out continuous light without any flickers.Type: ApplicationFiled: October 25, 2005Publication date: April 26, 2007Inventor: Li-Chun Lai
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Publication number: 20070090772Abstract: An exemplary balance controlling circuit (100) includes a transformer (T11), a first capacitor (C11), a second capacitor (C22), a first inductor (TC11), and a second inductor (TC12). The transformer includes two inputs (41, 42) connected to an external circuit, a grounded first output (43) and a second output (44). The second capacitor (C12) includes a first port (121) configured to connect to ground, and a second port (122) connected to the second output of the transformer. The first capacitor (C11) includes a second port (112) connected to the second output of the transformer, and a first port (111) connected to the first inductor and the second inductor. The first inductor includes a first output port (I1). The second inductor includes a second output port (I2), and a third output port (I3).Type: ApplicationFiled: October 23, 2006Publication date: April 26, 2007Inventor: Xiao-Qiang Gong
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Publication number: 20070090773Abstract: A discharge lamp lighting circuit includes a plurality of discharge lamps, a driving circuit, a control circuit, an open protection circuit, which are connected in series. The open protection circuit includes an open control circuit, a delay circuit, and a plurality of open detecting circuits connected in series. Each of the open detecting circuits is connected to a corresponding one of the discharge lamps. One terminal of the open control circuit is connected to the control circuit, and the other terminal of the open control circuit is connected to one terminal of the delay circuit and a predetermined one of the open detecting circuits. The other terminal of the delay circuit is connected to another predetermined one of the open detecting circuits and ground.Type: ApplicationFiled: June 27, 2006Publication date: April 26, 2007Inventors: Shin-Hong Chung, Kuan-Hong Hsieh
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Publication number: 20070090774Abstract: A discharge lamp driving device for driving a lamp module (23) including a plurality of lamps includes a switch circuit (21), a transformer and filter circuit (22), and a microcontroller (20). The switch circuit converts a received signal to an alternating current signal. The transformer and filter circuit is connected between the switch circuit and the lamp module, for amplifying and shaping the alternating current signal. The microcontroller connected to the switch circuit for outputting a control signal to control the switch circuit to output the alternating current signal to the lamp module. In the invention, correlative parameters and specifications of the circuit are predetermined via the microcontroller. Therefore, the structure of the whole circuit is simple.Type: ApplicationFiled: July 13, 2006Publication date: April 26, 2007Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHIH-CHAN GER, CHIA-MING CHANG
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Publication number: 20070090775Abstract: A dimming ballast control circuit for driving a ballast power switching circuit powering a gas discharge lamp. The circuit includes a driver circuit for driving high and low side switches of the ballast power switching circuit; a control circuit for driving the driver circuit including an oscillator circuit for providing an oscillating signal to control the frequency of operation of the ballast power switching circuit, the ballast power switching circuit outputting lamp powering pulsed signals; and a dimming control circuit having an input, the dimming control circuit receiving an AC lamp current feedback signal at the input, the dimming control circuit further receiving a DC input voltage reference at the input whereby the DC input voltage reference determines a desired dimming level of the lamp and the AC lamp current feedback signal maintains the lamp brightness at the desired dimming level.Type: ApplicationFiled: October 20, 2006Publication date: April 26, 2007Inventor: Thomas Ribarich
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Publication number: 20070090776Abstract: The present invention discloses a single-channel comprehensive protection circuit of a self-excitation half-bridge series resonant circuit having a single lamp output, including a DC block capacitor C3, a first partial pressure resistor R1, a second partial pressure resistor R2, a rectifying diode D1, a filter and integral capacitor C4, a release resistor R3, a diac D2, a filter capacitor C5, a filter resistor R4, wherein the method of one point of loading point A at the fluorescent lamp filament is used. The present invention normalizes the treatment of abnormal signals for over-current, over-voltage and end of lamp life state etc. in order to replace the conventional design of multi-channel and multi-point sampling for simplifying the circuit, reducing the cost and space, increasing reliability, and facilitating miniaturization development of the electronic lighting products.Type: ApplicationFiled: October 11, 2006Publication date: April 26, 2007Inventor: Haoran Zeng
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Publication number: 20070090777Abstract: In a lamp driving apparatus, backlight assembly and liquid crystal display device using the same, the lamp driving module is mounted on the substrate and provides lamps with power voltage. Sensors are disposed on the substrate to face the lamps, and detect operation state of the lamps to output sensing signals. Voltage cut-off module is disposed on the substrate and compares the sensing signals with a predetermined reference signal. The voltage cut-off module provides the lamp driving module with voltage cut-off signal when at least one of the sensing signals has an amplitude smaller than the reference signal. The deterioration of the lamps may be prevented, and the life expectancy of lamps except broken lamps may be increased.Type: ApplicationFiled: September 27, 2006Publication date: April 26, 2007Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Dong-Hoon KIM, Jong-Dae PARK, Jae-Ho JUNG
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Publication number: 20070090778Abstract: A signal processing circuit (1) comprises a first signal generator (10) which generates a DC-level (DL). A second signal generator (11) generates an AC-signal (AS) which is not related to the DC-level (DL). A combining circuit (12) combines the DC-level (DL) and the AC-signal (AS) into a combined signal (CS). And a common processing circuit (13) processes the combined signal (CS).Type: ApplicationFiled: May 17, 2004Publication date: April 26, 2007Applicant: KONINKLIJE PHILIPS ELECTRONICS N.V.Inventors: Hock Goh, Chun Wu
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Publication number: 20070090779Abstract: A frequency control circuit including a control circuit for setting a set value, an adding circuit for adding the set value per unit time and effecting counting based on the adding result, and a signal output circuit for outputting an alternating signal of a cycle corresponding to the time necessary for the count result by the adding circuit to reach a target value. The control circuit sets the set value as a value which does not correspond to a submultiple of the target value, and the adding circuit starts the counting of a next cycle when the count result reaches the target value. The control circuit further sets an initial value of the counting of the next cycle in accordance with a value of a portion of the adding results, exceeding the target value when the count result reaches the target value.Type: ApplicationFiled: October 24, 2006Publication date: April 26, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Akio Atsuta, Shinichi Yamashita
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Publication number: 20070090780Abstract: A circuit for a series motor for a power tool is disclosed, wherein reliable switching is achieved by means of two electronic switches, without the use of a mechanically disconnecting switch. To this end, two electronic switches, preferably triacs, are preferably connected in series to each other, the voltage drop across the triacs being continuously monitored by a monitoring circuit. A check for faults can be carried out before switching on the power tool. Alternatively, a fusible cutout can be tripped by means of a protective switch connected in parallel thereto.Type: ApplicationFiled: October 13, 2006Publication date: April 26, 2007Inventors: Christof Kress, Martin Beichter
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Publication number: 20070090781Abstract: A barrier movement operator includes an A.C. motor having a rotatable rotor connected to a barrier for movement thereof. A sensing apparatus generates motor signals representing an operational variable of the motor. The movement of the barrier is controlled by a controller, which responds to the motor signals by selectively stopping rotation of the rotor or reversing the rotation of the rotor. A power control arrangement provides energizing power to the motor by receiving AC power input substantially in the form of a sine wave and conducts portions of successive cycles of the sine wave of the received AC power to the motor to enhance the sensed operational variable to torque characteristic of the motor.Type: ApplicationFiled: November 30, 2006Publication date: April 26, 2007Applicant: THE CHAMBERLAIN GROUP, INC.Inventors: Robert Keller, Colin Willmott
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Publication number: 20070090782Abstract: The invention relates to a control apparatus of an electric power steering apparatus structured such as to apply a steering assist force generated by a n-phase motor to a steering system of a vehicle, the control apparatus is provided with at least (n?1) numbers of current detecting means for detecting a current Im in each of phases of the motor, a current command value calculating means for outputting a current command value Imref in each of the phases, and n numbers of current control means, and the control apparatus executes a current control of each of the phases by the current control means having the current command value Imref in each of the phases and the current Im in each of the phases as an input.Type: ApplicationFiled: November 24, 2004Publication date: April 26, 2007Inventors: Shuji Endo, Yuho Aoki, Hideyuki Kobayashi, CaoMinh Ta
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Publication number: 20070090783Abstract: A method is proposed for braking a synchronous machine 1, with the armature windings (u, v, w) of the synchronous machine 1 being short-circuited, optionally by interposing at least one braking resistor. In order to keep the braking moment constant over virtually the entire speed range it is proposed that the short-circuit current is regulated by a pulse-width modulation depending on the difference between the setpoint value of the short-circuit current corresponding to the setpoint value of the braking moment and the actual value of the short-circuit current.Type: ApplicationFiled: November 12, 2004Publication date: April 26, 2007Inventors: Josef Rainer, Erwin Bernecker
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Publication number: 20070090784Abstract: After a power source is turned on, the motor stars by feeding a current to the auxiliary wiring for a first predetermined period. Then, a voltage induced in the auxiliary wiring is detected. Whether or not the detected inducted voltage is lower than a predetermined voltage is judged. The detected induced voltage is judged to be lower than the predetermined voltage when the shredder cannot cut the paper and the rotation speed of the motor is decreased. In this case, since the current is fed to the auxiliary wiring for a second predetermined period, the rotation speed of the motor is increased and an output torque is also increased, which leads to the cuttable state.Type: ApplicationFiled: October 23, 2006Publication date: April 26, 2007Inventors: Tsuneo NAGAHAMA, Yoshiaki YOKOI
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Publication number: 20070090785Abstract: A method and system for reducing audible motor noise in a system for reconstructing motor phase current from a DC bus current comprising current pulses on a DC bus in a PWM inverter motor drive system having a PWM cycle, and for controlling the motor, which forms a command voltage vector according to a space vector modulation arrangement for controlling the motor; measures the DC bus current on the DC bus supplying power to the inverter to reconstruct said motor phase current; and determines when the command voltage vector results in an inverter switching state that prevents the measuring of the DC bus current from accurately indicating motor phase current.Type: ApplicationFiled: October 25, 2006Publication date: April 26, 2007Inventor: Eddy Ho
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Publication number: 20070090786Abstract: Thin layers of fuel cells are provided on the housings of portable electrically-powered devices. The fuel cells provide electrical power for the devices. The fuel cell layers can follow contours of the device housings. some embodiments provide fuel plenums between a surface of the housing and a fuel cell layer. The fuel plenum may carry a fuel such as hydrogen gas to fuel cells of the fuel cell layer.Type: ApplicationFiled: July 21, 2005Publication date: April 26, 2007Applicant: Angstrom Power IncorporatedInventor: Gerard McLean
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Publication number: 20070090787Abstract: The present invention provides a dynamo battery charger adapted to provide amusement during the recharging process. The charger housing is shaped or constructed to represent an amusing apparatus that includes optional features that simulate actual components whereby the amusing optional features are operable when the battery charger is being actuated.Type: ApplicationFiled: October 19, 2005Publication date: April 26, 2007Inventors: Sun Yu, David Perrin
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Publication number: 20070090788Abstract: A rechargable battery with an internal microcontroller. The microcontroller contains a memory in which data regarding the environment to which the battery is exposed are stored. These data are read by a processor integral with the charger used to charge the battery. If these data indicates the battery may have been subjected to a harsh environment for an excessive period of time, the charger performs a complete state of health evaluation of the battery.Type: ApplicationFiled: October 20, 2006Publication date: April 26, 2007Inventors: Brey Hansford, Don Malackowski, Jeffrey Sollanek
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Publication number: 20070090789Abstract: A mobile communication device is provided for inserting into a charging seat. The charging seat has a reception chamber and a charging circuit with a first coupling section. The mobile communication device includes: an outer casing for inserting into the reception chamber along a predetermined direction, and a first charging port formed at a lateral side surface of the outer casing. When the outer casing is inserted into the reception chamber, the first coupling section of the charging circuit extends into the first charging port in the outer casing to permit the charging circuit to conduct a charging operation.Type: ApplicationFiled: October 23, 2006Publication date: April 26, 2007Inventors: Szu-Tsung Chang, Jun Rao, Chiung-Hsien Wu
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INDUCTIVE BATTERY CHARGER SYSTEM WITH PRIMARY TRANSFORMER WINDINGS FORMED IN A MULTI-LAYER STRUCTURE
Publication number: 20070090790Abstract: There is provided a planar inductive battery charging system designed to enable electronic devices to be recharged. The system includes a planar charging module having a charging surface on which a device to be recharged is placed. Within the charging module and parallel to the charging surface is at least one and preferably an array of primary windings that couple energy inductively to a secondary winding formed in the device to be recharged. The invention also provides secondary modules that allow the system to be used with conventional electronic devices not formed with secondary windings.Type: ApplicationFiled: December 14, 2006Publication date: April 26, 2007Applicant: CITY UNIVERSITY OF HONG KONGInventor: Shu-yuen HUI -
Publication number: 20070090791Abstract: A rechargeable battery system for a portable electronic device is provided. The system includes a battery pack having a first battery and a second battery. The battery pack is preferably configured to electrically connect one of the first and second batteries to the electronic device in a first position, but requires at least partial detachment from the electronic device and reattachment of the battery pack to the electronic device in a second position, different from the first position, to electrically connect the other of the first and second batteries to the electronic device. The system further includes at least one set of charging terminals on the battery pack for charging the first and second batteries.Type: ApplicationFiled: October 21, 2005Publication date: April 26, 2007Inventors: Matthew Bartlett, Brad Sherrill
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Publication number: 20070090792Abstract: A lithium ion battery and a method of power conservation for the same are provided. A bare cell including an electrode assembly with a plurality of electrodes and a protective circuit are coupled together via the plurality of electrodes. The protective circuit includes a remaining charge control circuit that internally detects a long-term nonuse state of the lithium ion battery and blocks current between the bare cell and the protective circuit when the long-term nonuse state is detected. The method includes: detecting whether the battery is used as a power source for an external instrument; determining and recording a value of an accumulated nonuse time when the lithium ion battery was not used as a power source; and blocking an internal current and converting the battery to a long-term nonuse mode when the value of the accumulated nonuse time is above a value indicative of a predetermined time.Type: ApplicationFiled: September 20, 2006Publication date: April 26, 2007Inventors: Sesub Sim, Jongwoon Yang, Segawa Susumu
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Publication number: 20070090793Abstract: Disclosed are a multi-battery pack system, a method for controlling battery packs, and a battery pack, in which plural battery packs provided in the multi-battery pack system can be set as a master battery pack and slave battery packs by themselves. The method for controlling the battery packs constructing the multi-battery pack system includes: a first step of checking if a communication line is maintained at a first level for a first desired amount of time when an activation signal or a message of setting a master battery pack is received; and a second step of outputting signals of a second level to the communication line for a second desired amount of time when the communication line is maintained at the first level for the first desired amount of time, and setting a battery pack as a master battery pack.Type: ApplicationFiled: October 20, 2006Publication date: April 26, 2007Applicant: LG CHEM, LTD.Inventors: Yasuhito Eguchi, Shoji Tanina, Young Joon Shin, Chang Eon Jin, Jin Seok Heo
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Publication number: 20070090794Abstract: A wall outlet device includes a light device received in a housing and having one or more light members coupled to one or more chargeable batteries, and a control device having a sensing/switching device for electrically coupling to a power supply, and electrically coupled to the light members of the light device, for detecting whether the power supply is supplied to the sensing/switching device of the control device or not, and for controlling the chargeable battery to energize the light member of the light device and to light the dark environment when the power supply is not supplied to the sensing/switching device of the control device, such as when on fire.Type: ApplicationFiled: October 14, 2005Publication date: April 26, 2007Inventors: Chih Chen, Chih Chen
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Publication number: 20070090795Abstract: There is provided an accessory (300, 500) for a portable electronic device that conveniently wipes an internal user interface of the device. The accessory (300, 500), is configured for removable attachment to the portable electronic device. The portable electronic device has first and second housings (102, 104) that rotate or otherwise adjust relative to each other. In particular, the portable electronic device may be closed or opened by adjusting the position of the first and second housings (102, 104). The portable electronic device has an internal user interface (106-116) that is exposed in the open position (100) and hidden in the closed position (200). The accessory (300, 500) includes an inner wall 306, 508) capable of placement between the first and second housings (102, 104) while the device is closed.Type: ApplicationFiled: October 24, 2005Publication date: April 26, 2007Inventor: Amit Eswaraiah
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Publication number: 20070090796Abstract: A power adapter for powering battery-operated (also referred to as “cordless”) power tools using electricity from a standard AC electrical outlet. Cordless power tools are typically powered by a battery cartridge which is removeably attached to the power tool. The battery cartridge includes a housing which contains the battery cells and electrical connections for electrically connecting the battery cartridge to the power tool. The power adapter of the present invention replaces, at least temporarily, the battery cartridge and comprises a housing which contains a transformer for converting the alternating (AC) electrical current to the same direct current (DC) electrical power provided by the battery cartridge. The power adapter further comprises electrical connections adapted to connect to the electrical connections of the cordless power tool. The power adapter housing has substantially the same overall size and shape as the battery cartridge which it replaces.Type: ApplicationFiled: November 28, 2005Publication date: April 26, 2007Inventor: Waatani Norris
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Publication number: 20070090797Abstract: A method for charging a plurality of batteries wherein each battery includes an anode and a cathode. The method includes electrically coupling n batteries to form a string of batteries, electrically coupling n battery charger assemblies to the n batteries such that each respective battery charger assembly is coupled to an anode and a cathode of a respective battery, and charging the plurality of batteries utilizing the n battery charger assemblies.Type: ApplicationFiled: October 19, 2005Publication date: April 26, 2007Inventors: Richard Glosser, William Bonneau, Brian Meyer
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Publication number: 20070090798Abstract: The battery management system of the present invention measures a cell voltage of a battery more efficiently using a small number of elements, and measures a pack current and voltage thereof when measuring the voltages of a plurality of cells. The battery management system is coupled to the battery formed with one pack having a plurality of battery cells. The battery includes a first sub-pack having first and second batteries among the plurality of battery cells. The battery management system includes first to fourth relays and an A/D converter. The first and the second relays transmit the cell voltages in response to respective first and second control signals by being coupled to each output terminal of the first and second battery cells of the first sub-pack. The third relay transmits the cell voltage transmitted though one of the first and second relays in response to a third control signal, and the first charging unit stores the cell voltage transmitted from the third relay.Type: ApplicationFiled: October 19, 2006Publication date: April 26, 2007Inventors: Han-Seok Yun, Se-Wook Seo, Gye-Jong Lim
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Publication number: 20070090799Abstract: Disclosed is a switching circuit for balancing battery cells. The switching circuit includes plural pairs of switching means, each pair of which are connected to each other in parallel and interrupt a flow of electric current in a bi-direction in order to reduce the internal voltage applied to the switching means. According to the present invention, since the switching elements of low internal voltage can be used for the switching circuit, it is possible to constitute the switching circuit for cell balancing without use of switching elements of high internal voltage and to reduce the number of MOSFETs, thereby making it possible to design the switching circuit effectively. Since the MOSFETs having the low internal voltage and low resistance are used for the switching circuit, it is possible to reduce a loss of the electric current due to the resistance during the cell balancing, thereby improving the balancing efficiency and reducing heat generation.Type: ApplicationFiled: April 14, 2006Publication date: April 26, 2007Inventors: Dal Lee, Han Lee, Jee Kim, Eguchi Yasuhito
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Publication number: 20070090800Abstract: Power control systems and methods are provided to control when and how power is removed from devices. A power control system includes a sensing module that detects an output voltage level of a battery pack. A shutoff module initiates a shutoff routine when the output voltage level decreases to a device shutoff voltage level. The device shutoff voltage level is greater than the battery pack shutoff voltage level. A bypass module prevents the initiation of the shutoff routine when the device performs one or more operations that are known to cause high battery current spikes that will resultant in significant voltage drops from the battery pack.Type: ApplicationFiled: October 17, 2005Publication date: April 26, 2007Applicant: Paxar Americas, Inc.Inventor: Robert Schulte
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Publication number: 20070090801Abstract: In general, in the circuit to measure and diagnose the cell post voltage and internal impedance in storage battery cells and find out their aging status, the impedance voltage signal which is induced by the constant current is added to the direct current voltage on the storage battery cell post. This invention provides a much better method to discriminate the battery cell voltage 1.0 V-12 V and internal impedance voltage from the various noises on the battery cell post voltage like the induced ripple voltage, and then convert them to digital values by means of a A/D converter, and input the digital signals into a CPU. As a result, it raises the degree of accuracy in measurement of the internal impedance value of the battery.Type: ApplicationFiled: December 4, 2004Publication date: April 26, 2007Inventor: Deuk Soo KIM
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Publication number: 20070090802Abstract: The present invention relates to a battery management system for securely maintaining battery charging capacity and precisely measuring a battery pack voltage. The battery management system, which is coupled to a battery including a plurality of battery cells as one battery pack, includes a sensing stabilization unit, a relay, a battery pack voltage measurement signal generating unit, and an analog/digital (A/D) converter. The sensing stabilization unit includes a first and a second signal lines electrically coupled to a first and a second terminals of the battery, respectively, and maintains a stable potential difference between the first and second signal lines. The relay is turned on in response to a control signal, and transmits the potential difference between the first and second signal lines.Type: ApplicationFiled: October 19, 2006Publication date: April 26, 2007Inventor: Se-Wook Seo
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Publication number: 20070090803Abstract: The battery management system (BMS) measures a state of charge (SOC) of a battery by using a total amount of charge corresponding to a total amount of discharge accumulation. The BMS, outputting a SOC of a battery to an engine control unit (ECU), includes a sensor, state of health (SOH) and SOC measurers, a total amount of charge (TAC) determiner, and an output unit. The sensor detects a pack current and a pack voltage of the battery. The SOH measurer outputs a SOH of the battery by using the pack current and voltage. The SOC measurer measures a SOC of the battery by using the pack current and a TAC of the battery. The TAC determiner accumulates a total amount of discharge accumulation by using the pack current, determines a TAC corresponding to the total amount of discharge accumulation, and delivers the determined TAC to the SOC measurer. The output unit outputs the SOC and SOH to the ECU.Type: ApplicationFiled: October 19, 2006Publication date: April 26, 2007Inventors: Han-Seok Yun, Se-Wook Seo, Gye-Jong Lim
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Publication number: 20070090804Abstract: Residual charge in a battery is measured based on a discharge voltage from the battery. A device for measuring the residual charge in the battery includes a fluctuation width amplifier configured to amplify a fluctuation width of a discharge voltage from the battery in excess of a threshold voltage. The device includes a display module configured to display the discharge voltage amplified by the fluctuation width amplifier. The discharge voltage amplified by the fluctuation width amplifier corresponds to the residual charge in the battery. The residual charge in the battery may be determined based on the discharge voltage and the application load data due to an operative application program.Type: ApplicationFiled: September 12, 2006Publication date: April 26, 2007Applicant: LG Electronics Inc.Inventors: Young Kim, Sun Park
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Publication number: 20070090805Abstract: A charged state detecting apparatus for a secondary battery is provided, which can suppress deterioration in the accuracy of detecting a charged state, such as an SOC, the deterioration being caused by variation of a polarization state of a battery. The charged state detecting apparatus stabilizes an amount of polarization of the battery, stops power generation upon confirmation of the stabilization of the polarization amount, and sufficiently alters the current of the battery to sample a required number of data pairs of voltage and current of the battery. Using these data pairs, the charged state detecting apparatus detects a charged state, such as the SOC, of the battery.Type: ApplicationFiled: October 26, 2006Publication date: April 26, 2007Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Satoru Mizuno, Atsushi Hashikawa, Shoji Sakai, Kenji Ueda, Katsunori Tanaka, Takeshi Sada, Akira Kato, Masahiro Sou
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Publication number: 20070090806Abstract: One embodiment relates to a method of pre-set discharging of a battery in a portable device which is connected to external power. The battery is charged until a fully-charged level is reached, and the time at the fully-charged level is tracked. The charging of the battery is halted after a maximum full-charge time period is elapsed. The charging is restarted after a pre-set charge level is reached. Other embodiments are also disclosed.Type: ApplicationFiled: October 17, 2005Publication date: April 26, 2007Inventors: Cary Hoffer, Memphis-Zhihong Yin, Cynthia Head
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Publication number: 20070090807Abstract: A method of preventing deep discharge of the battery pack (1?) with series-connected cell groups (2a, 2b) by polarity reversal of an individual weakest cell (3), includes a difference measurement step which is repeated over time for detecting an event indicative of a probable reversal of polarity in which the change over time of the voltage difference between two cell groups (2a, 2b) having identical numbers of cells is checked to determine if the change in the voltage difference has exceeded an amount corresponding to a difference threshold value which reliably distinguishes a fast polarity reversal of an individual weakest cell (3) in exactly one cell group (2a, 2b) from the slow fluctuation of the voltage difference between two cell groups (2a, 2b) during an ordinary discharge characteristic curve without polarity reversal of an individual weakest cell (3); and a battery pack (1?) and a battery-powered hand-held power tool (7) with a monitoring circuit (5?) for implementing the method.Type: ApplicationFiled: October 11, 2006Publication date: April 26, 2007Inventor: Bernd Ziegler
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Publication number: 20070090808Abstract: A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.Type: ApplicationFiled: October 19, 2006Publication date: April 26, 2007Inventors: Paul McCabe, Bryce Gregory, Richard Day
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Publication number: 20070090809Abstract: An overvoltage protection device is adopted, which is provided with a conductive polymer that runs away thermally when the resistance value becomes V2/P or higher, given that the power consumption when actuated is P and the voltage of the secondary battery cell when fully charged is V.Type: ApplicationFiled: March 4, 2004Publication date: April 26, 2007Applicant: Tyco Electronics Raychem K.K.Inventor: Naofumi Miyasaka
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Publication number: 20070090810Abstract: Methods of and apparatus for removing heat generated by cells of a battery pack. The method and apparatus may employ one or more fan modules disposed between or next to cells of the battery pack, or one or more fans directly mounted to the battery pack or battery pack case housing the cells. Further, a motor controller isolation system operates to electricity isolate the motor controller of the electric vehicle when the battery pack is being charged. The motor controller isolation system may be integrated with the integrated battery pack and thermal and ventilation system. The integrated system, or “integrated battery unit (IBU),” is preferably manufactured in a manner that requires no, modifications to the electric vehicle in which the IBU is installed.Type: ApplicationFiled: July 20, 2005Publication date: April 26, 2007Inventors: Blake Dickinson, Larry Hayashigawa
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Publication number: 20070090811Abstract: Provided is an apparatus and method for providing a voltage reduction for single-phase voltage regulator operation in a three-phase power system. The voltage regulator includes a plurality of tap positions selectable to adjust a voltage at a load to an in-band area. The method includes determining a measured voltage and current at the voltage regulator, determining a line voltage drop between the voltage regulator and the load if the measured voltage in the OOB area above the in-band area, and utilizing the measured voltage to lower the voltage at the load if there are no available taps. The method also includes utilizing the measured voltage less the line voltage drop to determine the tap change if there are available taps.Type: ApplicationFiled: March 6, 2006Publication date: April 26, 2007Inventor: Casper Labuschagne
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Publication number: 20070090812Abstract: A control loop for a clocked switching power converter where the loop features a comparator (44) and a filter (61) in series to linearize the nonlinear response of the comparator (44). The filter (61) has poles and zeros offsetting the poles and zeros of a bridge rectifier (M1 and M2).Type: ApplicationFiled: October 24, 2005Publication date: April 26, 2007Inventor: Ahmad Dowlatabadi
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Publication number: 20070090813Abstract: A DC chopper features a setting device, which sets a required current value signal being dependent on a filtered input voltage such that an oscillation of the input filter device and an oscillation of the current are phase-opposed. The DC chopper may further have a control device, which, depending on the input voltage, supplies a control signal and adds the control signal to the actual current value signal supplied to form a controlled actual current value signal. The DC chopper may optionally have a disconnection device, which receives a switch-off signal on the input side and, depending on the switch-off signal received, supplies a ramp disconnection signal, and an adding node which adds the actual current value signal to the ramp disconnection signal to form an elevated actual current value signal.Type: ApplicationFiled: October 20, 2006Publication date: April 26, 2007Inventor: Martin Gotzenberger
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Publication number: 20070090814Abstract: A semiconductor device capable of reducing an inductance is provided. In the semiconductor device in which a rectification MOSFET, a commutation MOSFET, and a driving IC that drives these MOSFETs are mounted on one package, the rectification MOSFET, a metal plate, and the commutation MOSFET are laminated. A current of a main circuit flows from a back surface of the package to a front surface thereof. The metal plate is connected to an output terminal via a wiring in the package. Wire bondings are used for wirings for connecting the driving IC, the rectification MOSFET, and the commutation MOSFET, all terminals being placed on the same plane. For this reason, the inductance becomes small and also a power source loss and a spike voltage are reduced.Type: ApplicationFiled: October 24, 2006Publication date: April 26, 2007Inventors: Takayuki Hashimoto, Nobuyoshi Matsuura, Masaki Shiraishi, Yukihiro Satou, Tetsuya Kawashima