With Detection Of Current Or Voltage Differential (e.g., Slope, Etc.) Patents (Class 320/161)
  • Patent number: 10209312
    Abstract: A method and apparatus for evaluating CEW performance, in particular by evaluating a battery pack condition state via direct or indirect means. A two-tier load test for a CEW battery pack and an indirect wireless spark analysis tool are disclosed.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: February 19, 2019
    Inventor: Ivo Foldyna
  • Patent number: 10164252
    Abstract: A composite anode active material includes a metal silicide core, a silicon shell, and a metal nitride and a carbon material that are dispersed in at least one surface of the silicon shell.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: December 25, 2018
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Jeeeun Yang, Heechul Jung, Jinsoo Mun
  • Patent number: 10099308
    Abstract: A method and apparatus provides welding-type power and preferably includes a removable battery or other energy storage device, a converter connected to the battery, and a controller. The controller may have a CV and/or a CSC and/or an AC weld control module, and/or an ac auxiliary control module. The converter is a boost converter, a buck converter, a cuk converter, a forward converter, an inverter, a bridge converter, and/or a resonant converter. The controller may include a battery charging control module, and may have one or more charging schedules, and/or data for stored charge, thermal information, expected life of the battery, maximum amp-hour charge for the battery, maximum charging current and/or feedback. The battery charging schedules may include at least 3 phases, such as a phase of increasing voltage and a phase of decreasing current, a substantially constant power phase. The controller can wirelessly provide data to a display or pda.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: October 16, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Bernard J. Vogel, Richard W. Beeson
  • Patent number: 9979208
    Abstract: A tool discharges one battery pack and a charger simultaneously charges another battery pack to provide for continuous and circular operation of the tool. Tool system includes a tool and a lithium based battery pack having a nominal voltage of at least 56 volts for supplying power to the tool. A heat absorbing device is associated with the battery pack and includes a phase-change material.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: May 22, 2018
    Assignee: Chevron (HK) Limited
    Inventors: Dezhong Yang, Qichun Zhang, Haishen Xu, Junya Duan, Hao Du
  • Patent number: 9796291
    Abstract: A controller may include input channels configured to receive charge acceptance values of an auxiliary battery and an SOC of a traction battery. The controller may also include output channels configured to provide threshold signals to set a voltage threshold of an auxiliary bus coupled with the auxiliary battery and deriving power from the traction battery. The controller may include control logic configured to generate the threshold signals such that during a next charging event, a voltage of the auxiliary battery achieves a desulfation value. The controller logic may generate the threshold signals in response to the acceptance falling below a predetermined sulfation value and the SOC being above an SOC threshold.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: October 24, 2017
    Assignee: Ford Global Technologies, LLC
    Inventor: David Anthony Symanow
  • Patent number: 9672988
    Abstract: A high-voltage pulse discharge capacitor of an elongated structure comprises a capacitor body. The capacitor body comprises several high-voltage capacitor parallel units and a high-voltage capacitor core pack. The several high-voltage capacitor parallel units are mutually connected in parallel. The high-voltage capacitor parallel units connected in parallel are then connected as a whole with the high-voltage capacitor core pack in parallel. The high-voltage capacitor parallel unit comprises two capacitor core packs. The two capacitor core packs are mutually connected in parallel. The capacitor core packs connected in parallel are wrapped with a PP film and purple copper foil at an outer side integrally. The purple copper foil is connected to axial faces located at a head and a tail of a combination integral of the two capacitor core packs.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: June 6, 2017
    Assignee: Gyrk International Technology Co., Ltd.
    Inventor: Hai Wang
  • Patent number: 9612291
    Abstract: A system and method for more accurately measuring an internal resistance of a battery for a vehicle are provided. The method includes measuring, by a controller, current-voltage pairs for the battery and calculating a correlation between current and voltage in the measured current-voltage pairs. In addition, the internal resistance of the battery is measured using the current-voltage pairs having the correlation equal to or greater than a preset threshold.
    Type: Grant
    Filed: March 7, 2015
    Date of Patent: April 4, 2017
    Assignee: Hyundai Motor Company
    Inventors: Woo Suk Sung, Do Sung Hwang
  • Patent number: 9499066
    Abstract: In the case of a method for determining a charge acceptance ICA of a rechargeable battery, the battery is computationally split up into a predetermined number n of compartments i having a respective maximum charge capacitance Ci, which are connected in parallel via resistances Ri, and the charge acceptance ICA of the battery is determined on the basis of the charge capacitance C1 and the resistance R1 of the compartment adjacent to the battery terminals. The invention also relates to a method for charging a rechargeable battery.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: November 22, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Urs Christen, Paolo Romano, Eckhard Karden
  • Patent number: 9490723
    Abstract: A power adaptor system and method is provided. The adaptor system includes a system side and a power adaptor. The power adaptor method includes steps of: transforming an AC voltage to a DC voltage; the power adaptor generating a periodic signal and outputting a combined signal according to the DC voltage and the periodic signal; the system side retrieving a determination signal corresponding to the periodic signal according to the combined signal; and the system side selecting an operating mode according to the determination signal.
    Type: Grant
    Filed: November 10, 2012
    Date of Patent: November 8, 2016
    Assignee: QUANTA COMPUTER INC.
    Inventors: Tai-Hsin Chu, Yu-An Huang, Wei-Ting Lu, Tsung-Lin Chan, Hsin-Wei Chen, Chih-Kuo Hung, Zih-Chiang Wang, Hung-Chang Tsai
  • Patent number: 9407104
    Abstract: A charger for recharging the batteries of a portable electronic device even when no external power source is available. A battery or cell is installed within the charger, and when no access is available to a fixed power source into which the charger can be plugged, the internal battery or cell can be used to recharge the electronic device. The internal battery can be a primary battery or a secondary battery. In the latter case, the internal battery can be maintained in a charged state by means of circuitry which, when the charger is plugged into the external power source, charges the internal battery as well as the battery of the electronic device. The external power source can be either an AC power wall socket, in which case the charger includes AC/DC voltage conversion circuits, or a car lighter socket, or the DC output of a conventional wall charger.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: August 2, 2016
    Assignee: Tower Semiconductor Ltd.
    Inventors: Dror Manor, Amnon Saar, Guy Weinstein, Daniel Breiting
  • Patent number: 9379568
    Abstract: A method and apparatus for controlling charge of a low-voltage battery are provided. The method includes assigning, by a controller, a preset voltage for the low-voltage battery based on an operating mode of a vehicle and a charge state of a high-voltage battery. In addition, the controller compares the preset voltage with a present charge voltage of the low-voltage battery and increases the present charge voltage with a first slope until the present charge voltage becomes equal to the preset voltage when the preset voltage is greater than the present charge voltage. The operating mode comprises drive modes that include a first drive mode and a second drive mode, a fuel cell stop mode, and an emergency mode. The first drive mode is divided into a plurality of stages based on the charge state of the high-voltage battery.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: June 28, 2016
    Assignee: Hyundai Motor Company
    Inventors: Kyu Il Lee, Kyung Won Suh, Seon Hak Kim
  • Patent number: 9371005
    Abstract: The present invention relates to an electric vehicle, and to a method for managing the charging of an auxiliary battery for an electric vehicle. The electric vehicle according to the present invention comprises: a high voltage battery for driving the electric vehicle; an auxiliary battery for supplying a plurality of electronic loads with driving power; a converter converting the voltage of the high voltage battery to a voltage required by the electronic loads via PWM switching; and a current detection unit for detecting the output current of the converter wherein the converter includes a converter control unit for reducing the output voltage of the converter when the energy required by the loads, based on the current detected by the current detection unit, is greater than the rated capacity of the converter. Accordingly, energy supplied to the loads can be handled by the converter and the auxiliary battery so as to enable the safe operation of an electric vehicle system.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: June 21, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Won Jin Oh, Sun Yong Kim
  • Patent number: 9174545
    Abstract: Provided is a vehicle charging device (170) that uses a power source (101) outside of a vehicle (160) to charge a battery (115) installed in the vehicle (160). A charger (114) charges the battery (115). A voltage measurement unit (111) measures the input voltage corresponding to the input current in the charger (114). A current measurement unit (112) measures the input current (Ic) in the charger (114). A control unit (113) changes the input currents (Ic) of the charger (114) into a plurality of values, and controls the input current (Ic) when the input voltage (Vc) has changed, according to the corresponding relationship between the input currents (Ic), when each has been changed, and the measured input voltages (Vc).
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: November 3, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Tsuyoshi Nishio
  • Patent number: 9059593
    Abstract: Disclosed herein is a charge controlling system, including: a control apparatus; and a plurality of battery units connected to the control apparatus, wherein the control apparatus includes an acquisition section configured to acquire sensor information from at least one of the battery units, and a control section configured to set a magnitude of charge current for each of the battery units in response to the sensor information, and the battery units individually include a battery, a charge controlling section configured to charge the battery with the charge current of the magnitude set by the control section, and a sensor for acquiring the sensor information.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: June 16, 2015
    Assignee: Sony Corporation
    Inventor: Yoshihito Ishibashi
  • Patent number: 9030168
    Abstract: A power conversion device includes: a DC/DC convertor (5) that performs DC/DC conversion on an output voltage of a direct-current power supply (for example, a solar battery module (1)); and a DC/AC invertor (6) that performs DC/AC conversion on an output voltage of the DC/DC convertor (5). The output power of the DC/AC invertor (6) is controlled such that the charge and discharge of a storage device (for example, a storage battery (3)) connected to a connection point between an output end of the DC/DC convertor (5) and an input end of the DC/AC invertor (6) are controlled.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: May 12, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Ryo Iwai, Yukihiro Shimizu, Shunsuke Nishi, Masaki Eguchi
  • Patent number: 9030151
    Abstract: The present disclosure provides a solar cell pack and a method for balancing currents of solar cell modules. The solar cell pack includes a first solar cell module, a second solar cell module, a first balancer, a sampler and a controller. A negative pole of the first solar cell module is electrically connected to a positive pole of the second solar cell module. The first balancer is electrically connected to the first and the second solar cell modules in order to balance the current flowing through the both solar cell modules. An input terminal of the sampler is electrically connected to the first and the second solar cell modules. An output terminal of the sampler is electrically connected to an input terminal of the control unit. An output terminal of the control unit is electrically connected to an input terminal of the first balancer.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: May 12, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Guisong Huang, Jie Huang
  • Patent number: 9007035
    Abstract: A charge control circuit supplies power from an external power source to a first common node and charges a second common node. A regulator circuit is coupled between the external power source and the first common node, and a transistor is coupled between the first common node and the second common node. A current sensing and control device senses the current from the first common node to the second common node and generates a first control signal. A first voltage sensing and control device senses a voltage at the first common node, and generates a conduction control signal to control the transistor. A second voltage sensing and control device senses a voltage at the second common node, and generates a second control signal. The regulator circuit provides system power to the first common node according to the first control signal and the second control signal.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: April 14, 2015
    Assignee: Richtek Technology Corporation
    Inventor: Nien-Hui Kung
  • Patent number: 8994323
    Abstract: A charging circuit includes a power path control unit which switches a first switch connected between a system connection terminal and a battery connection terminal on while not charging, and switches the first switch on and a second switch connected between an external power supply input terminal and the system connection terminal on while charging so as to supply power to a system and charge a battery. A voltage difference between the external power supply input terminal and the battery connection terminal is detected, a current flowing between the external power supply input terminal and the system connection terminal is detected, and it is determined that an external power supply is disconnected based on the detection results of the voltage differences and the current.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Junji Nishida
  • Patent number: 8988045
    Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: March 24, 2015
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Jean-Marie Klein, Arnaud Delaille, Sylvie Genies
  • Patent number: 8972765
    Abstract: The present disclosure is directed to a system including a power source connected to at least two electrical buses, and a battery connected to each one of the electrical buses. Each battery is charged by the power source and is connected to a load via one of the electrical buses. A battery error signal generator generates a battery error signal for each battery by finding a difference between a sensed battery voltage and a reference voltage. A reference control signal generator generates a reference control signal for each battery based on the battery error signals for each battery. A power sensor produces a sensed power signal between the power source and each battery connected to each of the two electrical buses. The reference control signal and the sensed power signal for each battery controls a power output value from the power source to each battery.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: March 3, 2015
    Assignee: The Boeing Company
    Inventors: Matthew Joseph Krolak, Shengyi Liu
  • Patent number: 8917062
    Abstract: The present invention discloses a charge control circuit for supplying power from an external power source to a first common node and charging a second common node from the first common node. A regulator circuit is coupled between the external power source and the first common node, and a transistor is coupled between the first common node and the second common node. The present invention detects an operation parameter of the transistor and controls an internal voltage source to generate a non-predetermined voltage difference accordingly. When the sum of the voltage at the second common node and the non-predetermined voltage is equal to or higher than the reference voltage, the voltage at the first common node is regulated to a level higher than the voltage at the second common node, and the transistor is in an optimum conductive state.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: December 23, 2014
    Assignee: Richtek Technology Corporation
    Inventors: Chien-Ping Lu, Nien-Hui Kung, Li-Wei Lee, Chia-Hsiang Lin, Chen-Hsiang Hsiao, Ko-Ching Su
  • Publication number: 20140361752
    Abstract: Methods for charging batteries comprises applying a charging current to the battery, monitoring the voltages of the positive and negative electrodes during the step of applying the charging current, and determining a point during the process of applying the charging current where the negative electrode is fully charged. Monitoring comprises determining the total battery voltage from the combined voltages of the battery positive and negative electrodes. The slopes along the total battery voltage are measured to obtain a trend line of the change in the slope of the total battery voltage during charging. The trend line is monitored against a logarithm of the applied charging current to determine a point where the negative electrodes are in a state of full charge, at which point the positive electrodes are also fully charged. The charging operation is terminated once such state of fully charge has been determined.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Applicant: International Battery Corporation
    Inventor: Bill William Brecht
  • Patent number: 8796996
    Abstract: A charge control circuit includes a charge control unit that controls an operation of a charging unit that charges a rechargeable battery; and a voltage detection unit that detects a terminal voltage of the rechargeable battery, wherein when a terminal voltage of the rechargeable battery as detected by the voltage detection unit is lower than a predetermined first threshold-value voltage, being lower than a full-charge voltage which is a terminal voltage of the rechargeable battery in full charge, the charge control unit causes a constant current charging to the rechargeable battery by requesting the charging unit to supply a charging current of a predetermined first current value, causing the charging unit to supply a charging current of the first current value to the rechargeable battery, when the terminal voltage of the rechargeable battery as detected by the voltage detection unit exceeds the first threshold-value voltage but is less than the full charge voltage, the charge control unit causes the constan
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: August 5, 2014
    Assignee: Panasonic Corporation
    Inventors: Toshiyuki Nakatsuji, Tsuyoshi Morimoto
  • Patent number: 8698458
    Abstract: A method of charging a battery pack, the battery pack including at least one battery cell. The method includes comparing a battery cell voltage to a first voltage; comparing the battery cell voltage to a second voltage that is greater than the first voltage; and controlling a current amplifying unit coupled to the at least one battery cell to amplify a current from a charger to the at least one battery cell if the battery cell voltage is between the first voltage and the second voltage.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Youngu Kim
  • Patent number: 8674654
    Abstract: An apparatus and a method of monitoring a battery in an automotive vehicle are provided. An output is provided which can be a relative output as a function of minimum and maximum parameters of the battery.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: March 18, 2014
    Assignee: Midtronics, Inc.
    Inventor: Kevin I. Bertness
  • Patent number: 8598849
    Abstract: Some embodiments provide a system that monitors a battery in a portable electronic device. During operation, the system applies a pulse load to the battery and determines an impedance of the battery by measuring a voltage of the battery during the pulse load. Next, the system assesses a health of the battery based on the impedance. Finally, the system uses the assessed health to manage use of the battery in the portable electronic device.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 3, 2013
    Assignee: Apple Inc.
    Inventors: Ramesh C. Bhardwaj, Taisup Hwang, Richard M. Mank
  • Publication number: 20130307488
    Abstract: A battery management system is provided. In one embodiment, the battery management system includes a microcomputer unit that sets a charge amount of a battery to less than the total designed capacity of the battery and controls charging of the battery based on a constant current-constant voltage (CC-CV) charging method, and a current controller that controls an initial charge current applied to the battery according to the set charge amount.
    Type: Application
    Filed: July 31, 2012
    Publication date: November 21, 2013
    Applicant: Samsung SDI Co., Ltd.
    Inventor: Doosun Hwang
  • Patent number: 8519675
    Abstract: A system, a method, and an article of manufacture for determining an estimated battery cell module state indicative of a state of a battery cell module of a battery pack are provided. The method includes measuring at least one of a battery cell module voltage, a battery cell module current, and a battery cell module temperature. The method further includes determining the estimated battery cell module state of the battery cell module at a predetermined time based on an estimated battery pack state and at least one of the battery cell module voltage, the battery cell module current, and the battery cell module temperature. The method further includes storing a vector corresponding to the estimated battery cell module state in a memory.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: August 27, 2013
    Assignee: LG Chem, Ltd.
    Inventor: Gregory L. Plett
  • Patent number: 8509975
    Abstract: A vehicle comprising a chargeable/dischargeable battery, a current sensor for detecting the current from the battery, and a control unit for estimating the charged state of the battery and controlling the charging/discharging of the battery according to the charged state. In a first operation mode in which charging and discharging cycles are repeated, the control unit estimates the open-circuit voltage of the battery, and determines the charged state on the basis of the value which is obtained by correcting the open-circuit voltage according to the polarization. In a second operation mode in which either one of charging and discharging is continued, the control unit determines the charged state on the basis of the result of integration of the current detected by the current sensor. Hence, the charged and discharged amperehours are large, thereby providing a vehicle which can effectively utilize the secondary battery.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: August 13, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Junta Izumi
  • Patent number: 8502541
    Abstract: A method of evaluating battery packs is described. The method includes measuring a cell open voltage for each battery cell group in a section of battery cells; measuring a voltage under charge, or a voltage under load, or both, at a predetermined time interval for each battery cell group in the section of battery cells; determining the magnitude of the difference between the open cell voltage and the voltage under charge, or the voltage under load, or both, for each battery cell group in the section of battery cells by subtracting the voltage under charge from the cell open voltage, or subtracting the voltage under load from the cell open voltage, or both; and determining if the magnitude of the difference between the open cell voltage and the voltage under charge, or the voltage under load, or both, for each battery cell group in the section of battery cells exceeds a predetermined level.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: August 6, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Robert W. Chalfant, Jason A. Lupienski, John D. Tompkins
  • Patent number: 8493031
    Abstract: An SOC of each battery cell is periodically detected, and an SOCmin and an SOCmax are determined. Battery cells having the SOCs larger than SOCmin+? are selectively discharged. After an elapse of a preset equalization processing time period, discharge of all the battery cells is stopped. The equalization processing time period is set based on a rate of change in the SOC of the battery cell subjected to discharge and a rate of change in the SOC of the battery cell not subjected to discharge such that a magnitude relationship between the SOC of the battery cell having the SOCmin and the SOC of another battery cell is not reversed.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: July 23, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hiroya Murao, Yutaka Yamauchi, Shigeto Tamezane
  • Patent number: 8487630
    Abstract: A battery pack includes: one or two or more secondary batteries; a charge control switch that turns on/off a charging current to the secondary battery; a discharge control switch that turns on/off a discharging current from the secondary battery; a current-detecting element for detecting the charging current and the discharging current; a voltage measuring part that measures the voltage of the secondary battery; a control unit that controls the charge control switch and the discharge control unit; and a storage unit that stores an initial internal resistance of the secondary battery. The control unit measures a closed circuit voltage and a charging current during charging, and a first closed circuit voltage after a first waiting time and a second closed circuit voltage after a second waiting time. The second waiting time is longer than the first waiting time.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: July 16, 2013
    Assignee: Sony Corporation
    Inventor: Yasushi Mori
  • Patent number: 8471526
    Abstract: A protection device includes a voltage detector having N or more sub-circuits each for monitoring a specific battery cell to output a detection signal when at least one of the battery cells outputs an abnormal voltage. Each sub-circuit includes voltage dividing resistors, a reference voltage generator, and a comparator. The voltage dividing resistors generate a voltage division signal by dividing an output voltage of the battery cell. The reference voltage generator generates a reference voltage. The comparator compares the voltage division signal against the reference voltage. Each comparator is powered with voltage across the battery cell associated with the sub-circuit.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: June 25, 2013
    Assignee: Ricoh Company, Ltd.
    Inventor: Junichi Kanno
  • Patent number: 8471520
    Abstract: A power delivery rate from a renewable power source to a load is managed by determining, by processing circuitry, a change in a power generation rate, determining, by the processing circuitry, whether the change in the power generation rate exceeds a limit, and then, adjusting, by control circuitry, a power transfer rate to or from a power storage device, such that the adjusting is sufficient to prevent the power delivery rate from exceeding the limit.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: June 25, 2013
    Assignee: Xtreme Power Inc.
    Inventors: Carlos James Coe, Aeron Neils Hurst, Mark Isaac Hardin, Matthew Clayton Such, Richard Thomas Jennings
  • Patent number: 8465859
    Abstract: A current sensor includes a magnetic balance sensor and a switching circuit. The magnetic balance sensor includes a feedback coil which is disposed near a magnetic sensor element varying in characteristics due to application of an induction field caused by measurement current and which produces a canceling magnetic field canceling the induction field. The switching circuit switches between magnetic proportional detection and magnetic balance detection. The magnetic proportional detection is configured to output a voltage difference as a sensor output. The magnetic balance detection is configured to output, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized by the voltage difference.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: June 18, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Masatoshi Murata, Manabu Tamura, Shinji Mitsuya, Hiroyuki Hebiguchi
  • Publication number: 20130099720
    Abstract: Systems and methods for controlling a hybrid power architecture to provide fuel or energy savings. Recharge time of an energy storage device (ESD) is reduced through the application of a controlled potential and ESD recharge time management over the life of the hybrid system through manipulation of the ESD charge state window of operation. Fuel or energy savings is achieved by controlling the partial-state-of-charge (PSOC) window of the ESD based on a recharge resistance profile of the ESD and by controlling a charging potential applied to the ESD based on a recharge current and/or the estimated recharge resistance profile of the ESD.
    Type: Application
    Filed: July 13, 2012
    Publication date: April 25, 2013
    Inventors: Christopher James Chuah, Herman Lucas Norbert Wiegman, Donald Wayne Whisenhunt, JR., Roger Neil Bull, Kalyan Bukkasamudram, Connor Brady, Mark Gotobed
  • Patent number: 8419644
    Abstract: The present application discloses a cordless charger for a wearable patient monitor. When a patient (10) is diagnosed with a heart condition, or suspected heart condition, they are prescribed a patient monitoring system. The system includes monitors (12) that the patient (10) wears to collect the data of interest. Each day, the patient swaps the monitor (12) he or she is wearing with a fully charged monitor (12) from a cordless charger (14). In this manner, a fresh monitor (12) is always available for monitoring the patient (10). The cordless charger (14) includes a battery (50) that powers the processes of the charger and recharges batteries (34) of the monitors (12). Data from the monitors can be either offloaded to the charger memory (70), or transmitted to a remote database (32) via the patient's Bluetooth enabled cellular phone (30) or other like device.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: April 16, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Jacco C. Eerden
  • Patent number: 8415926
    Abstract: Some embodiments provide a system that monitors a battery in a portable electronic device. During operation, the system applies a pulse load to the battery and determines an impedance of the battery by measuring a voltage of the battery during the pulse load. Next, the system assesses a health of the battery based on the impedance. Finally, the system uses the assessed health to manage use of the battery in the portable electronic device.
    Type: Grant
    Filed: October 19, 2009
    Date of Patent: April 9, 2013
    Assignee: Apple Inc.
    Inventors: Ramesh C. Bhardwaj, Taisup Hwang, Richard M. Mank
  • Patent number: 8410747
    Abstract: Fuel cell components provide fuel cells on a flexible sheet that defines a wall of a flexible plenum. An external support structure limits expansion of the plenum in response to forces exerted by a pressurized reactant. The external support structure may comprise a portion of a housing of a portable device. Cathodes of the fuel cells may be accessible from an outside of the flexible sheet and exposed to ambient air while anodes of the fuel cell are accessible from an inside of the flexible sheet and exposed to a fuel, such as hydrogen gas.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: April 2, 2013
    Assignee: Societe BIC
    Inventors: Gerard Francis McLean, Jeremy Schrooten
  • Publication number: 20130076303
    Abstract: The present invention is a control system for charging a lead-acid battery based on the knowledge of the state of charge of the battery to provide a more consistent percent return target across the range of discharge levels and life of the battery.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 28, 2013
    Applicant: LESTER ELECTRICAL OF NEBRASKA, INC.
    Inventors: Brian Beckham, Jamie Jesse
  • Publication number: 20130069594
    Abstract: Disclosed is a battery pack including: a plurality of cell modules including a plurality of battery cells; and a battery management system for transmitting a control signal on charging to at least one of the plurality of cell modules based on state information of a battery cell transmitted by the cell modules, and controlling a current supplied to the cell modules by an external charger based on the state information, wherein the cell modules are charged to a predetermined capacity of the battery cell in connection with the external charger, and are charged to full capacity of the battery cell individually according to the control signal so the battery pack is fully charged very quickly without a cell balancing process.
    Type: Application
    Filed: May 30, 2011
    Publication date: March 21, 2013
    Inventor: Eun-Ey Jung
  • Publication number: 20130038275
    Abstract: A battery charger including a converter unit, a terminal adaptor, a cable, a battery, and/or multiple power connectors. A terminal, such as an electronic device, can be connected to the converter unit using the cable or directly to the converter unit without the cable. The converter unit determines when to draw power from an external power and when to cease drawing power from the external power source by detecting a power enablement condition or a power disablement condition. The power disablement condition occurs when the terminal is fully charged, the terminal is disconnected from the converter unit, and/or a charge time of the terminal exceeds the predetermined charge time threshold. The power enablement condition occurs when the terminal is initially connected to the converter unit and/or the terminal needs to be charged. The battery supplies power to components of the converter unit and/or the terminal.
    Type: Application
    Filed: October 10, 2012
    Publication date: February 14, 2013
    Applicant: Superior Communications, Inc.
    Inventor: Superior Communications, Inc.
  • Patent number: 8362750
    Abstract: An apparatus for controlling a charging circuit is provided. The apparatus includes a first detector, a second detector, and a controller. The first detector detects a voltage level at a first time and generates a first indication value corresponding to the voltage level at the first time, where the voltage level corresponds to an output voltage of the charging circuit. The second detector detects the voltage level at a second time after the first time and generates a second indication value corresponding to the voltage level at the second time. The controller receives the first and second indication values, and generates a control signal according to the first and second indication values for turning the charging circuit on and off.
    Type: Grant
    Filed: September 7, 2008
    Date of Patent: January 29, 2013
    Assignee: Leadtrend Technology Corp.
    Inventors: Ming-Nan Chuang, Yi-Shan Chu
  • Patent number: 8358107
    Abstract: Power management techniques are disclosed. For instance, an apparatus may include a bidirectional voltage converter circuit, and a control module that selectively operates the bidirectional voltage converter circuit in a charging mode and a delivery mode. The charging mode converts a voltage provided by an interface (e.g., a USB interface) into a charging voltage employed by an energy storage module (e.g., a rechargeable battery). Conversely, the delivery mode converts a voltage provided by the energy storage module into a voltage employed by the interface.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: January 22, 2013
    Assignee: Intel Corporation
    Inventor: Don J. Nguyen
  • Patent number: 8339095
    Abstract: A charging device capable of appropriately grasping the charged state of a battery pack using data stored in a memory of the battery pack even when the battery pack becomes commercial as a new product. A charging device determines charged state data indicative of a charged state of a battery pack mounted thereon based on a charging current supplied and/or a charging voltage applied to the battery pack. A charge control microcomputer reads charging characteristics data from a memory of the battery pack, and generates a data table associating at least one of the charging current supplied and the charging voltage applied to the battery pack and the charged state data with each other, based on the charging characteristics data read out. The microcomputer determines charged state data indicative of a charged state of the battery pack, based on the generated data table.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: December 25, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Isao Hayashi
  • Patent number: 8310208
    Abstract: A method of developing an optimum a lithium battery charging algorithm is conducted by providing a salt dissolved in solvent permitting lithium ions to leave a cathode in large format battery cells. Charge and discharge are then measured under different C-rate conditions. Using the cathode material phase transformations to ascertain a differential curve, peaks in the differential curve are observed with all data plotted against dV/dt and V, where V represents voltage and t represents time. Areas in voltage ranges are then observed where the rate of increase is higher than in other areas. By varying the charging current, an optimum charging voltage can be ascertained and maintained.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: November 13, 2012
    Inventor: Surajit Sengupta
  • Patent number: 8278874
    Abstract: In at least one embodiment, a device for balancing a flow of electrical energy from a vehicle to an external power source is provided. The device comprises a balance circuit being configured to receive an input current signal from the power source and to transmit an output current signal to the external power source for charging a element in a vehicle. A differential resistance causes the input current signal and the output current signal to be different. A current measuring device is configured to generate an output differential signal indicating a difference between the input and output current signals. A current generating device is configured to generate a compensated current signal in response to the output differential signal and to adjust the output current signal with the compensated current signal such that the input and output current signals are generally similar to one another.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: October 2, 2012
    Assignee: Lear Corporation
    Inventors: Mark Anthony Mueller, Peter A. Hatch, David A. Hein
  • Patent number: 8249769
    Abstract: In a hybrid vehicle equipped with an engine, a planetary gear mechanism linked to the output shaft of the engine and to a driveshaft, a first motor linked the planetary gear, a second motor inputting and outputting power to and from the driveshaft, and a battery inputting and outputting electric power to and from the motors, when the battery temperature Tb is lower than the preset reference temperature Tbref, drive control prohibits the intermittent operation of the engine and controls the engine and the motors to output the torque demand to the driveshaft with warm-up control of the battery. When the battery temperature Tb is higher than or equal to the preset reference temperature Tbref and the cooling water temperature Tw is higher than or equal to the preset reference temperature Twref, drive control performs the intermittent operation of the engine and controls the engine and the motors to output the torque demand to the driveshaft.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: August 21, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takao Itoh, Koji Yamamoto
  • Patent number: 8242748
    Abstract: A method and integrated circuit for preserving a battery's charge and protecting electrical devices is disclosed. A maximum and a minimum battery voltage value at the output port are stored in a memory. A steady state battery voltage at the output port is measured and stored in the memory. A processor compares the measured steady battery voltage value to the maximum and the minimum battery voltage values. If the measured steady state battery voltage value is greater than the maximum battery voltage value, an over voltage state is reported by the processor. If the measured steady state battery voltage value is less than the minimum battery voltage value, a low battery voltage state is reported by the processor.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: August 14, 2012
    Assignee: STMicroelectronics, Inc.
    Inventors: Gary J. Burlak, Marian Mirowski
  • Patent number: 8198865
    Abstract: A method and integrated circuit for preserving a battery's charge and protecting electrical devices is disclosed. A maximum and a minimum battery voltage value at the output port are stored in a memory. A steady state battery voltage at the output port is measured and stored in the memory. A processor compares the measured steady battery voltage value to the maximum and the minimum battery voltage values. If the measured steady state battery voltage value is greater than the maximum battery voltage value, an over voltage state is reported by the processor. If the measured steady state battery voltage value is less than the minimum battery voltage value, a low battery voltage state is reported by the processor.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: June 12, 2012
    Assignee: STMicroelectronics, Inc.
    Inventors: Marian Mirowski, Gary J. Burlak