Patents Examined by Lawrence Luk
  • Patent number: 7151358
    Abstract: A multi-battery automatic charging circuit with individual regulator is further provided with one secondary or more than one output interface to convert an AC source via a rectifier into a DC charging source, thus to supply power to an external rechargeable device or a DC load of different voltage through a tap of the circuit specific voltage; or alternatively, a primary battery, or a rechargeable battery provided with storage capacity, or any other rechargeable device generally available in the market is placed in the battery holder provided otherwise for the placement of rechargeable batteries to charge the external rechargeable device or to supply power to a DC load.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: December 19, 2006
    Inventor: Tai-Her Yang
  • Patent number: 7135838
    Abstract: A power-on method for a circuit system having a power supply terminal and a charge input terminal, comprising: coupling the power supply terminal to a battery and the charge input terminal to an adaptor; detecting a voltage of the battery; when the voltage of the battery is below a threshold, turning on a second switch such that the adaptor supplies the circuit system through the charge input terminal and the second switch to start the circuit system and charge the battery; when the voltage of the battery is above the threshold, turning off the second switch, and turning on a third switch, such that the charge input terminal is coupled to the battery through the third switch, and the circuit system is powered by the battery; and outputting a switch signal to control a first switch coupled between the adaptor and the charge input terminal for controlling charge capacity.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: November 14, 2006
    Assignee: BENQ Corporation
    Inventors: Sea-Weng Young, Chun-Chi Hsu, Wen-Bin Liu
  • Patent number: 7126310
    Abstract: An apparatus and method for charging a multiple-cell battery pack provides a balanced charge to each cell in a series by providing a cell charge monitor/regulator for (1) monitoring the charge (potential, for example) of each cell and, when a state is attained, defining a maximum cell charge, and (2) shunting further charge current to a next cell in the series via a shunt resistor that bridges the cell, and thereby bypasses further charging thereof, while directing shunted charge current to one or more next cells in the series as needed. Each of the cells is thereby charged to its fullest potential while the overall charging procedure is not unduly lengthened. The battery pack can be implanted as part of a life-saving system.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: October 24, 2006
    Assignee: Abiomed, Inc.
    Inventor: Christopher Barron
  • Patent number: 7088074
    Abstract: A system level device for battery and integrated circuit chip integration comprises at least one battery; at least one integrated circuit chip powered by the at least one battery; and a package connected to any of the at least one battery and the at least one integrated circuit chip, wherein the at least one battery connects to a pair of opposed upright ends of the package, wherein the at least one integrated circuit chip is disposed between the at least one battery and the package, and wherein the at least one integrated circuit chip lays on top of a portion of the package.
    Type: Grant
    Filed: January 2, 2002
    Date of Patent: August 8, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Louis L. Hsu, Carl J. Radens, Li-Kong Wang, Kwong Hon Wong
  • Patent number: 7084606
    Abstract: The invention herein relates to a non-polarity charging device wherein the positive/negative sensing terminals are connected to the battery. When in correct polarity, current flows from positive output clamp output to the battery positive terminal and back to the charging device through the negative output clamp, otherwise, the positive voltage flows through the negative output clamp to the battery positive terminal. Also, even when the battery voltage is below the sensor reading threshold, the manual switch at both battery terminals force-feed electric current through the correct polarity conducting circuit, with positive voltage at the positive clamp output, supplying positive current to effect a complete charging circuit. When the polarity sensing is completed and charging begins, a current indicator circuit lights up to reflect that the charging device is functioning.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: August 1, 2006
    Assignee: Iwei Technology Co., Ltd.
    Inventor: I-Chang Chang
  • Patent number: 7068011
    Abstract: The present invention relates to a series charger with separate detection of batteries which includes a charging control device for converting the inputted AC power into DC power so as to charging four batteries in series connection. The charging control device further provides a reference voltage source to a control IC which is connected with a current detector for measuring the current value of the batteries. Each of the series-connected batteries is parallel-connected with a switch element. A one-way diode is interposed between the positive end of the batteries and each of the switch elements. Besides, the control IC provides ??V to the positive terminal of the respective charging circuit of the batteries for detecting the end-point voltage thereof. When each of the batteries is fully charged, the respective switch element is switched in a close circuit so that the charging current continues to flow downward for further charging operation.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: June 27, 2006
    Inventor: Fu-I Yang
  • Patent number: 7061207
    Abstract: An electric circuit for equalizing voltages between serially arranged cells. The circuit is operable to generate AC voltages at amplitudes dependent on the DC voltages of the received cells. The AC voltages are all connected to an inductive coupling circuit. The inductive coupling allows higher-voltage cells to induce a recharging current flow in lower voltage cells and so equalize the cell voltages. The circuit also operates to ensure that cell voltages are maintained in equilibrium during charging or discharging of received cells, irrespective of the individual charging and discharging characteristics of the cells. The circuit thus prevents individual cells in a battery from being over-charged or over-discharged and allows more efficient use of the full capacity of a battery without risking damage to the individual cells. The cell equalizing circuit is thus especially useful for rechargeable cells, such as lithium-ion cells, which are sensitive to damage by over-charging and over-discharging.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: June 13, 2006
    Assignee: H2EYE (International ) Limited
    Inventors: Sanjay Patel, Chris D Shelton, Lawrence S Tyson
  • Patent number: 7045989
    Abstract: A plurality of charging devices 30 may be connected to a computer 10, 110 via a network 60. When computer 10 receives chewing information from a charging device 30 before performing a charging operation, computer 10 may compute the optimal charging period based upon the charging information. Parameters defining the optimal charging period may be transmitted to the respective charging devices 30. Each charging device 30 may perform the battery charging operation based upon the transmitted parameters. Thus, a network system can manage and control the charging operations for the plurality of charging devices in order to optimize charging period, optimize the number of charging devices 30 and battery packs 50 in use and maximize battery life.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: May 16, 2006
    Assignee: Makita Corporation
    Inventors: Kazuyuki Sakakibara, Katsutoshi Tanaka
  • Patent number: 7023179
    Abstract: In the case of charging by a charging apparatus having a plurality of input terminals to which external power sources for charging a secondary battery are inputted, it is prevented that a current of the inputted power source is outputted to the outside from the other input terminals for charging which are not used. If there are inputs from a plurality of input terminals, the input power sources are controlled so that the battery is optimally charged. pnp-type transistors Q1 and Q2 are arranged between two input terminals of a terminal 11 for an external power adaptor and a terminal 12 for a holder and a secondary battery E1, respectively. When a control IC 13 detects an input power voltage of one of the transistors, the transistor on the detected side is turned on. If the control IC 13 detects both input power voltages, a priority is allocated under predetermined conditions and the secondary battery E1 is charged by the power source of the higher priority.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: April 4, 2006
    Assignee: Sony Corporation
    Inventors: Tamiji Nagai, Kazuo Yamazaki, Tadahisa Yamamoto
  • Patent number: 7019492
    Abstract: A hand-held, manually-operated battery charger is disclosed having a generator that creates a voltage when a handle is turned by a user. A bridge rectifier is connected to the output of the generator and converts the voltage to a DC voltage, regardless of whether the handle is turned clockwise or counterclockwise. A supercapacitor stores the DC voltage. The charger also includes a connection port that is adapted to receive a connection cord. The connection cord receives the voltage from the supercapacitor and provides the voltage to a battery-charging port of a battery-operated device. The charger also includes a superbright LED that also receives the voltage from the supercapacitor. Voltage is switched between the connection port and the LED, such that the voltage is diverted to the connection port when the connection cord is attached thereto and is diverted to the LED when the connection cord is not attached.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: March 28, 2006
    Assignee: Innovative Solutions & Technologies, LLC
    Inventors: Wendal E. Baker, Michael J. Lely
  • Patent number: 7012433
    Abstract: An electronic battery tester, comprising first and second connectors configured to electrically couple to terminals of the battery, a microprocessor configured to test the battery using the first and second connectors, a memory containing a set of locked instructions for the microprocessor, an input configured to receive a software unlocking key, and the microprocessor configured to execute the set of locked instructions in response to the software unlocking key corresponding a predetermined software unlocking key.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: March 14, 2006
    Assignee: Midtronics, Inc.
    Inventors: Clark E. Smith, Kevin I. Bertness, Stephen J. McShane
  • Patent number: 7012403
    Abstract: A charger with a replaceable signal for a car includes a casing and a circuit board. The casing is provided with a current taking plug at a lateral side thereof. The circuit board is disposed in the casing and electrically connected to the current taking plug for rectifying and transformed an input power. It is characterized in that the casing at a proper position thereof is provided with a signal socket to electrically connect with the circuit board and a stopper being located therein; a signal line at an end thereof has a signal plug being detachably inserted into the signal socket and the stopper has an engaging piece for engaging with the signal plug and allowing the signal line fixedly joined to the casing laterally and the signal line at a another end thereof has a connector. Once the connector of the signal line is connected to an output/input port of a personal electric product and the current taking plug is inserted to a lighter device in a car, a recharging circuit can be performed.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: March 14, 2006
    Inventor: Steve Han Shi Hwang
  • Patent number: 7012402
    Abstract: A wireless microphone is provided with a recharging circuit which determines if a battery in the microphone is a rechargeable type and can be safely recharged. The recharging circuitry in the microphone, which could also be included in other handheld wireless devices, determines if a battery is in a charged state where it is difficult to distinguish rechargeable and non-rechargeable batteries. If so the battery is discharged until the battery reaches a charged state where non-rechargeable batteries can be readily distinguished from rechargeable batteries.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: March 14, 2006
    Assignee: Sabine, Inc.
    Inventors: Gary Miller, John Atkins
  • Patent number: 7012404
    Abstract: A terminal assembly for measuring electrical current passing to and from a battery post, including an electrically conductive collar for connecting to a post of a battery, and an electrically conductive terminal for receiving a connector of a load. An electrically conductive resistor having a known resistance extends between outer surfaces of the collar and the terminal. The terminal assembly is incorporated into a battery, which also includes a volt meter connected between the outer surfaces of the collar and the terminal for measuring the voltage drop across the resistor, memory for storing the known resistance of the resistor, and a processor programmed to receive the measured voltage drop from the volt meter, retrieve the known resistance from the memory, and calculate current flow through the resistor based on the measured voltage drop and the known resistance, whereby current flow to and from the battery can be measured.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: March 14, 2006
    Assignee: Microchip Technology Incorporated
    Inventor: David C. Batson
  • Patent number: 7002319
    Abstract: A cable railroad system has a load-bearing and traction cable and a large number of chairs. The chairs are provided with coupling devices with which they can be coupled to the load-bearing and traction cable. Here, the seats of the chairs are constructed with electric heating devices and also with batteries for feeding the heating devices. The system also has devices for charging up the batteries.
    Type: Grant
    Filed: July 14, 2003
    Date of Patent: February 21, 2006
    Assignee: Innova Patent GmbH
    Inventor: Christoph Hinteregger
  • Patent number: 6999290
    Abstract: An IC having inputs and outputs for a plurality of frequency bands from a high frequency band to a low frequency band is protected from electrostatic damage. A high-frequency section of the IC is provided with a protection circuit including diode-connected transistors connected by multiple stages. In addition, there are applied the transistors in which elements thereof are isolated by insulator that can prevent thyristor operation.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: February 14, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Kumiko Takikawa, Satoshi Tanaka
  • Patent number: 6982540
    Abstract: An energy management system for an electrical system of a motor vehicle subjected to a large number of loads including at least one generator, at least one storage battery, a controller of energy distribution in the system which bases such control at least on efficiency of individual components of the motor vehicle involved in power generation, energy storage and power consumption. In order to determine the overall efficiency of the energy storage unit, which comprises at least one energy store, the state of charge, the temperature of the store and the absolute magnitude of the charging and discharging currents are taken into account. In addition to mechanically driven generators, the system can possess a fuel cell and, in addition to an electrochemical energy store, further physical stores such as double-layer capacitors.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: January 3, 2006
    Assignee: VB Autobatterie GmbH
    Inventors: Gerolf Richter, Christian Rosenkranz
  • Patent number: 6977482
    Abstract: A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit is responsive to an output signal from an associated power management unit. The selector circuit is further configured to permit parallel operation of two or more of the batteries. The selector circuit may further act to independently verify power conditions and override any instructions from the PMU in certain instances to enhance power supply safety and battery life. A power supply block including the selector circuit and an electronic device including the power supply block is also provided. The selector circuit may be integrated with a charging circuit on one integrated circuit.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: December 20, 2005
    Assignee: O2Micro International Limited
    Inventors: Vlad Popescu-Stanesti, Marian Niculae, Constantin Bucur
  • Patent number: 6977486
    Abstract: Disclosed is a charging apparatus capable of easily charging a battery of a mobile communication terminal and being portable.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: December 20, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jae-Won Choi
  • Patent number: 6975096
    Abstract: A rechargeable electrochemical cell is provided having a pressure-responsive apparatus for determining a charge termination point. In particular, a reversible pressure-responsive switch may be disposed in a rechargeable cell. A sensor determines when the switch has reacted in a predetermined manner, thus indicating that the internal pressure within the cell has reached a predetermined threshold. The sensor is part of sensing circuitry that is linked to a charger having automatic charging modes depending on the status of the sensing circuit.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: December 13, 2005
    Assignee: Rovcal, Inc.
    Inventor: Aaron J. Rositch