With Detection Of Current Or Voltage Amplitude Patents (Class 320/162)
  • Patent number: 10291052
    Abstract: In accordance with an embodiment, a bypass charging circuit includes a pair of transistors having current carrying terminals commonly connected to form a node. An input of a comparator is coupled to the node through a switch and to a resistor. Another input terminal of the comparator is coupled for receiving a reference voltage. Optionally, a transistor may be connected to the bypass charging circuit. In accordance with another embodiment a method is provided in which bypass charging transistors are coupled to first input of a comparator in response to closing a switch. A voltage is generated at the first input of the comparator in response to closing the switch and the voltage is compared with a reference voltage. In response to the comparison, a status indicator signal is generated to indicate the presence of a low-impedance failure in one or both of the bypass charging transistors.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: May 14, 2019
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: James A. Meacham, II, Karttikeya Shah
  • Patent number: 10284004
    Abstract: A charging system and a method are provided. The charging system includes a power supply device, a charging module and a battery module. The charging module is detachably connected with the power supply device, and connected with the battery module. The charging module includes a power converting unit, a voltage regulator and a charging controller. When the power supply device and the charging module are connected with each other, the power converting unit of the charging module is in the backward direction and uses the electric power of the battery module to pre-charge a bus capacitor. If the voltage of the bus capacitor is higher than or equal to a first threshold value because of pre-charge, the voltage of an adjusting terminal of the charging module is adjusted. Consequently, the charging system is in a normal working mode.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: May 7, 2019
    Assignee: DELTA ELECTRONICS (THAILAND) PUBLIC COMPANY LIMITED
    Inventors: Hao Sun, Jinfa Zhang, Yueyong Meng, Shuanggang Li
  • Patent number: 10282796
    Abstract: An energy storage system includes a battery and an energy storage controller. The battery is configured to store electrical energy purchased from a utility and to discharge the stored electrical energy for use in satisfying a building energy load. The energy storage controller is configured to generate a cost function including multiple demand charges. Each of the demand charges corresponds to a demand charge period and defines a cost based on a maximum amount of the electrical energy purchased from the utility during any time step within the corresponding demand charge period. The controller is configured to modify the cost function by applying a demand charge mask to each of the multiple demand charges. The demand charge masks cause the controller to disregard the electrical energy purchased from the utility during any time steps that occur outside the corresponding demand charge period when calculating a value for the demand charge.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: May 7, 2019
    Assignee: Johnson Controls Technology Company
    Inventors: Mohammad N. ElBsat, Michael J. Wenzel, Robert D. Turney
  • Patent number: 10277052
    Abstract: A controller for controlling power delivery to a battery includes a first terminal that provides a first signal to enable a bypass path to deliver power from an interface to charge the battery, and includes a second terminal that provides a second signal to enable a conversion circuit to convert input power received at the interface to output power to charge the battery. The controller also includes circuitry that determines whether a first adapter or a second adapter is connected to the interface, generates the second signal if the second adapter is connected to the interface, generates the first signal and a request if the first adapter is connected to the interface, and provides the request to the first adapter through the interface. The request includes information indicative of a target level and an instruction that causes the first adapter to provide power at the target level to the interface.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: April 30, 2019
    Assignee: O2Micro Inc.
    Inventor: Guoxing Li
  • Patent number: 10252627
    Abstract: This disclosure relates to the field of electric vehicles (EV) that run, at least in part, on an electric motor. Included on the EV is an on board charger (OBC) responsible for charging a battery supply based on electronic power received from a source. The OBC is configured to detect certain voltage or current characteristics during a charging operation of the battery supply, and adjust allowed operational limits for the OBC accordingly.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: April 9, 2019
    Assignees: Hyundai Motor Company, KIA Motors Corporation
    Inventor: Ryan Miller
  • Patent number: 10237830
    Abstract: Methods, systems, and devices, including machine-readable media, for dynamic battery power management are disclosed. In some implementations, an electronic device that is powered by a battery senses a voltage provided by the battery and an electric current provided by the battery. The electronic device determines a present state of the battery. The electronic device determines a current limit for the electronic device based on the sensed voltage and electric current and the determined present state of the battery. The electronic device manages power use of the electronic device to maintain electric current draw from the battery at or below the electric current limit.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: March 19, 2019
    Assignee: Google LLC
    Inventors: Liang Jia, Srikanth Lakshmikanthan, Eklavya Singh, Enrique Romero Pintado
  • Patent number: 10211651
    Abstract: Provided is method of controlling an SOC value and an SOH value of an entire battery pack system in which two or more battery packs are connected in parallel. The method includes: an individual SOC value and SOH value calculation operation for calculating the SOC value and the SOH value of each of the two or more battery packs connected in parallel.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 19, 2019
    Assignee: LG Chem, Ltd.
    Inventor: Mi So Park
  • Patent number: 10193367
    Abstract: A method for determining voltages and/or power available in an electrical recharging network that includes at least one voltage generator and at least one recharging terminal i corresponding, at a first instant t1, to a predetermined reference impedance zii. At an instant t2, the method implements at least one iteration of the following acts: estimating a changing of the reference impedance zii into a modified impedance z?ii; updating a voltage of the recharging terminal i by determining a modified inverted loop impedance matrix Zloop_M?1 as a function of a reference inverted loop impedance matrix Zloop_R?1 and of a difference between the modified impedance z?ii and the reference impedance zii, delivering a voltage U?i; and verifying/updating a value of power available at the recharging terminal i as a function of a voltage U?i, a maximum power of the generator and/or a threshold voltage delivering, an available power Pdisp_i.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: January 29, 2019
    Assignee: INSTITUT MINES TELECOM
    Inventors: Fadi Abi Abdallah, Maurice Gagnaire
  • Patent number: 10177588
    Abstract: A charging circuit for providing a charging current to a battery includes a power delivery unit and a capacitive power conversion circuit. The power delivery unit converts an input power to a DC output voltage and current, and regulates the DC output current to a predetermined output current level. The capacitive power conversion circuit includes a conversion switch circuit including plural conversion switches coupled to one or more capacitors, and a conversion control circuit which operates the plural conversion switches in plural conversion periods to connect the one or more capacitors between a pair of nodes selected from plural voltage division nodes, the DC output voltage, and a ground node periodically, so that the level of the charging current is scaled-up of the predetermined output current level.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: January 8, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Tsung-Wei Huang, Shui-Mu Lin, Wei-Jen Huang, Hsien-Chih She, Teng-Cheng Chen
  • Patent number: 10177576
    Abstract: A charger circuit for providing a charging current and voltage to a battery includes a power delivery unit, a capacitive power conversion circuit and a reverse blocking switch circuit. The power delivery unit converts an input power to a DC voltage and current. The capacitive power conversion circuit includes a conversion switch circuit including plural conversion switches coupled with one or more conversion capacitors, and a conversion control circuit. The DC current is regulated to a predetermined DC current level, and the conversion control circuit controls the connections of the plural conversion capacitors such that the charging current is scaled-up of the predetermined DC current level substantially by a current scale-up factor. The reverse blocking switch circuit is coupled in series with the capacitive power conversion circuit. The body diode of the reverse blocking switch is reversely coupled to the body diode of the conversion switch.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: January 8, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Jen Huang, Shui-Mu Lin, Tsung-Wei Huang, Chih-Hua Hou
  • Patent number: 10161992
    Abstract: A power supply includes a first and second electric storage sections, a first sensor detecting a first current of charge/discharge of the first storage section, a second sensor detecting a second current of the charge/discharge of the second storage section, and a circuit module having a control section to determine a state of the first sensor, the second sensor, and/or a third sensor detecting a third current of a driving section by comparing a first current with a third current in a charge/discharge between the first storage section and the driving section, and/or a second current with the third current in a charge/discharge between the second storage section and the driving section, and by comparing the first current with the second current and the first current with the third current in the discharge of the first storage section to the second storage section and the driving section.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: December 25, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masayuki Kawamura, Hajime Fujita, Hirokazu Oguma
  • Patent number: 10153662
    Abstract: A wireless transmission device includes a coil that generates a magnetic field; and a resonant power-storage element module that is electrically coupled to a coil, is capable of storing electric power, and forms a resonant circuit corresponding to a power transmission frequency together with the coil when transmitting electric power via the coil. The resonant power-storage element module is formed by connecting a plurality of power storage elements in parallel to form a parallel group, connecting a plurality of such parallel groups in series to form a parallel-series group, and connecting a plurality of such parallel-series groups in parallel.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: December 11, 2018
    Assignee: YAZAKI CORPORATION
    Inventor: Antony Wambugu Ngahu
  • Patent number: 10148108
    Abstract: In an embodiment, a system includes a first link to couple first universal serial bus (USB) type-C control logic and electrical charger control logic of electrical charger circuitry. The first link is to provide a first data path between the first USB type-C control logic and the electrical charger control logic. The system also includes the first USB type-C control logic to receive first control data from the electrical charger control logic via the first link, and a second link to couple the first USB type-C control logic to second USB type-C control logic of a USB type-C power adapter circuitry. The second link is to provide a second data path for the first control data from the first USB type-C controller logic to the second USB type-C control logic. Other embodiments are described and claimed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 4, 2018
    Assignee: Intel Corporation
    Inventor: Don J. Nguyen
  • Patent number: 10133331
    Abstract: Various embodiments are generally directed to operation of a computing device powered with first and second sets of energy storage cells, the cells of the first set structurally optimized for higher density storage of electric power, and the cells of the second set structurally optimized for providing electric power at a high electric current level. A battery module includes a casing, a first cell disposed within the casing to store electric energy with a high density, and a second cell disposed within the casing to provide electric energy stored therein with a high current level. Other embodiments are described and claimed herein.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 20, 2018
    Assignee: INTEL CORPORATION
    Inventors: Tawfik M. Rahal-Arabi, Alexander B. Uan-Zo-Li, Mark MacDonald, Vivek M. Paranjape, Andy Keates, Don J. Nguyen
  • Patent number: 10074994
    Abstract: A power tool system includes at least one power tool, in particular at least one measuring tool, which has a holder for at least partial insertion of a rechargeable battery pack, and a rechargeable battery pack, in particular a rechargeable battery pack including lithium cell chemistry, for reversible insertion into the holder of the at least one power tool. The holder and the rechargeable battery pack have compatible mechanical and electrical interfaces for mechanical and electrical contact-connection of the power tool and the rechargeable battery pack.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: September 11, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Roehm, Michael Frank, Heiko Sgarz, Reiner Krapf
  • Patent number: 10073478
    Abstract: A voltage regulator includes a first transistor including a first terminal to receive an input voltage and a second transistor including a first terminal coupled to a second terminal of the first transistor. A charge pump couples to the second transistor and to an output voltage node. An amplifier receives a feedback voltage derived from the output voltage and generates a control signal to gates of the transistors. Responsive to the input voltage being more than a threshold larger than the output voltage, the amplifier maintains the second transistor off and the first transistor on such that current flows through the first transistor to the output voltage node but not the second transistor. Responsive to the input voltage being less than the threshold amount, the amplifier operates the first transistor in a triode mode and turns on the second transistor to provide current to the charge pump.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: September 11, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vadim Valerievich Ivanov, Srinivas K. Pulijala, Siva Kumar Sudani
  • Patent number: 10046662
    Abstract: Disclosed herein is an invention concerning a method for managing charging of a Li-ion battery based on at least one parameter chosen from a group consisting of a state of deterioration of the Li-ion battery and cell unbalance, the method comprising the following steps: a) determining an end-of-charge voltage value of said Li-ion battery, b) generating a control signal controlling the charging of said Li-ion battery, and c) transmitting the control signal to a charger, the control signal being generated in such a way that the Li-ion battery is charged based on the end-of-charge voltage value determined in step a), said end-of-charge voltage value being increased based on the state of deterioration of said Li-ion battery until a limit value is reached, in order to ensure a constant minimal level of required energy in said Li-ion battery is provided at a predetermined reference temperature.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: August 14, 2018
    Assignee: RENAULT s.a.s.
    Inventors: Antoine Saint-Marcoux, Masato Origuchi, Ana-Lucia Driemeyer-Franco, Daniel Boiron
  • Patent number: 10027186
    Abstract: A power supply apparatus includes an output unit that wirelessly outputs electric power to an electronic device, a communication unit that wirelessly communicates with the electronic device, a detecting unit that detect a current flowing to the output unit, and a control unit that performs a process to limit the current flowing to the output unit in a case where the current detected by the detecting unit is greater than or equal to a predetermined value set according to a predetermined magnetic field strength while the output unit outputs the electric power to the electronic device.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Iori Aikawa, Marie Tateno
  • Patent number: 10020540
    Abstract: A thin film battery comprises a glass or ceramic substrate having a coefficient of thermal expansion (“CTE”) of from about 7 to about 10 ppm/° K, a continuous metal or metal oxide cathode current collector and having a thickness of less than about 3 micrometers, the cathode current collector being superjacent to the glass or ceramic substrate, a cathode material layer comprising lithium transition metal oxides that is a continuous film having a thickness of from about 10 to about 80 micrometers, the cathode material layer being superjacent to the cathode current collector, a LiPON electrolyte layer superjacent to the cathode material layer and having a thickness of from about 0.5 to about 4 micrometers, and an anode current collector with an optional anode material. Methods of making and using the batteries are described.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: July 10, 2018
    Assignee: CYMBET CORPORATION
    Inventors: Stuart Kevin Shakespeare, Stanley Jacob Stanislowski, Matthew E. Flatland, Stephen W. Downey, Morgan J. Thoma
  • Patent number: 9960618
    Abstract: Devices having battery charge control circuits are disclosed. Such devices can include power control circuits operable to receive electrical power at a connector, and provide power to electrical components, including a charge current for a rechargeable battery; and a controller circuit configured to determine and store a maximum charge current setting based on whether a voltage at the connector falls below a predetermined limit as the charge current is increased. Corresponding methods are also disclosed.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: May 1, 2018
    Assignee: Seagate Technology LLC
    Inventors: Ashutosh Razdan, Philip Yin, Felix Markhovsky
  • Patent number: 9941723
    Abstract: Some embodiments relate to a power management system. The power management system includes a generator that provides a voltage output to a bus. The bus is adapted to be connected to a load. The power management system further includes a battery charger that is adapted to charge a battery. A generator controller operates the generator and also adjusts operating conditions of the battery charger. In some embodiments, the generator includes an internal combustion engine that drives an alternator. Embodiments are contemplated where the battery charger is adapted to receive power from a primary power source. As an example, the primary power source may be utility power or some other form of generator power.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: April 10, 2018
    Assignee: Kohler, Co.
    Inventors: Eric D. Albsmeier, Richard A. Mauk, Harrison C. Chiu
  • Patent number: 9927465
    Abstract: Provided is a voltage measuring device capable of increasing the degree of freedom in the design of an RC filter (low-pass filter) while suppressing the withstand voltage limit of a capacitor. The voltage measuring device comprises: at least one divided capacitor group having a plurality of divided capacitors connected in series through measurement nodes and having one end connected to a reference node and the other end connected to a non-reference node; and at least one non-divided capacitor having one end connected to the reference node and the other end connected to a non-reference node to which the divided capacitors are not connected.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: March 27, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yasumichi Ohnuki
  • Patent number: 9893569
    Abstract: A power supply apparatus includes an output unit that wirelessly outputs electric power to an electronic device, a communication unit that wirelessly communicates with the electronic device, a detecting unit that detect a current flowing to the output unit, and a control unit that performs a process to limit the current flowing to the output unit in a case where the current detected by the detecting unit is greater than or equal to a predetermined value set according to a predetermined magnetic field strength while the output unit outputs the electric power to the electronic device.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: February 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Iori Aikawa, Marie Tateno
  • Patent number: 9864017
    Abstract: A performance deterioration detecting apparatus configured to detect a performance deterioration start state of an energy storage device. The performance deterioration start state is an initial state of deterioration in performance of the energy storage device. The apparatus includes a performance deterioration determiner configured to determine that the energy storage device is in the performance deterioration start state based on a displacement of peak position in a capacity-voltage property of the energy storage device with time. The capacity-voltage property indicates a relation between a capacity variation amount (dQ/dV) and a voltage (V).
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: January 9, 2018
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Yohei Tao, Shigeki Yamate
  • Patent number: 9862275
    Abstract: The fail safe apparatus for an eco-friendly vehicle includes: a main battery to supply driving power of a vehicle; a battery controller to manage a state of charge of the main battery; a power converter to convert power supplied from the main battery into power for charging an auxiliary battery; a motor controller to drive a motor with the power supplied from the main battery; a hybrid starter generator to start an engine and charge the main battery; and a vehicle controller to monitor a capacity voltage of any one of the power converter and the motor controller when there is an error in data communication of the battery controller and control charging and discharging of the main battery based on the monitored results.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: January 9, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jung Min Cha, Dae Ro Park
  • Patent number: 9837836
    Abstract: A charging method and a portable electronic device using the same are provided. The charging method includes following steps: detecting a battery voltage and a charging current of a battery module; determining whether the portable electronic device operates at a constant voltage (CV) charging mode; executing an impedance calculation at the CV charging mode to obtain a first battery voltage corresponding to a first predetermined current and a second battery voltage corresponding to a second predetermined current; calculating a compensation impedance according to the predetermined current and the battery voltages; setting a maximum charging voltage according to the compensation impedance and executing a CV charging to the battery module accordingly; determining whether a current variation of the charging current is larger than a threshold value; re-executing the impedance calculation; updating a setting value of the maximum charging voltage when the current variation is larger than the threshold value.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: December 5, 2017
    Assignee: ASUSTeK COMPUTER INC.
    Inventors: Ching-Han Li, Hsiang-Jui Hung, Wei-Chen Tu, Ming-Ting Tsai
  • Patent number: 9827868
    Abstract: A secondary battery control unit has a calculating portion identifying a parameter of an equivalent circuit based on an estimation error that is obtained by a comparison between an actual output value of a secondary battery and an equivalent output value of the equivalent circuit. Based on a predetermined amount of an infinitesimal change in the parameter and an evaluation function that is obtained using a result of the comparison, the calculating portion numerically calculates a slope of the evaluation function and renews the parameter based on the slope. As a result, the secondary battery control unit has the calculating portion capable of identifying the parameter of the equivalent circuit while reflecting effects of deterioration of the secondary battery and capable of being integrated to a vehicle-mounted microcomputer.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: November 28, 2017
    Assignee: DENSO CORPORATION
    Inventors: Yuuji Koike, Keiichi Kato, Toshiyuki Kawai
  • Patent number: 9806559
    Abstract: A reversible buck or boost converter is operable in a buck mode and in a boost mode. In the buck mode, the converter receives a supply voltage via an input terminal and generates a charging current that is supplied to a battery, thereby charging the battery. The supply voltage is also supplied through the converter to an output terminal. In a boost mode, the converter receives power form the battery and generates a supply current and voltage that is output onto the output terminal. The same single current sense resistor is used both to control the charging current in the buck mode and to control a constant current supplied to the output terminal in the boost mode. The output current is controlled to be constant, regardless of changes in the in the battery voltage and changes in the output voltage.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 31, 2017
    Assignee: Active-Semi, Inc.
    Inventors: Hong Mao, Wei-Chung Wu
  • Patent number: 9774194
    Abstract: Provided are a charge and discharge control circuit having a small circuit area and a compact battery device. A constant current circuit and an external resistor are connected to a voltage monitoring terminal so that a terminal voltage is pulled up or pulled down based on an external input. Moreover, output logic of a comparator and overcharge detection and overdischarge detection are switched based on the external input.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: September 26, 2017
    Assignee: SII Semiconductor Corporation
    Inventor: Shinya Fukuchi
  • Patent number: 9746526
    Abstract: A battery cell unit includes a battery cell and a monitoring device for monitoring the state of the battery cell. The monitoring device comprises an actuating device configured to activate an impedance spectroscopy mode provided by the battery cell unit, in which impedance spectroscopy mode measurement currents can be applied to the battery cell to perform impedance spectroscopy of the battery cell, said measurement currents flowing through the battery cell and comprising alternating currents at different frequencies. The monitoring device also comprises a sensor device designed to detect the measurement currents and the corresponding measurement voltages, each of which is a battery cell voltage arising as a response to a measurement current, such that a complex impedance of the battery cell can be determined from the measured values of the measurement currents and the measurement voltages as a function of the frequency of the measurement currents within predetermined tolerance limits.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: August 29, 2017
    Assignees: Robert Bosch GmbH, Samsung SDI Co., Ltd.
    Inventor: Holger Fink
  • Patent number: 9735454
    Abstract: An apparatus for controlling a lithium-ion battery is provided in which a power-generating element including a positive electrode element and a negative electrode element is housed in a case, wherein the case contains a compound releasing an electron toward the positive electrode element to provide a proton at an electric potential lower than a first electric potential being a positive electrode potential corresponding to a negative electrode potential at which precipitation of lithium occurs, the electric potential lower than the first electric potential being a second electric potential and being higher than a positive electrode potential corresponding to an upper limit value of working voltages of the lithium-ion battery, and the apparatus includes a controller configured to perform recovery processing of changing the lithium precipitated on the negative electrode element into a lithium ion using the proton by using a power source section supplying a power to the lithium-ion battery to bring the positive e
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: August 15, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kosuke Iwase
  • Patent number: 9728995
    Abstract: Because a rechargeable battery has an increased number of uses (e.g., cycles), the battery's internal impedance can increase and the efficiency of the battery can become degraded. This internal resistance can cause cutoff voltage thresholds and cutoff current thresholds to prematurely stop a phase of battery charging, as these cutoff values can be based on low-cycle count batteries. New cutoff values can, instead, be based on battery impedance. Use of an adjusted cutoff current threshold during a constant voltage cycle can increase the capacity of high-cycle count batteries. Use of an adjusted cutoff voltage threshold in step charging can increase the charging speed of high-cycle count batteries. These increases in efficiency by using adjusted cutoff values can increase as the battery is further high-cycle count, in comparison with low-cycle count cutoff values used with high-cycle count batteries.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: August 8, 2017
    Assignee: INTEL CORPORATION
    Inventors: Naoki Matsumura, Gang Ji, Brian C. Fritz
  • Patent number: 9721447
    Abstract: A method can include receiving power level information for a device that includes a rechargeable battery and a display; determining a power level differential based at least in part on the power level information and historical information of the device; and rendering a power level differential notice to the display.
    Type: Grant
    Filed: September 20, 2015
    Date of Patent: August 1, 2017
    Assignee: Lenovo (Singapore) Pte. Ltd.
    Inventors: John Carl Mese, Russell Speight VanBlon, Arnold S. Weksler, Nathan J. Peterson, Rod D. Waltermann
  • Patent number: 9662989
    Abstract: A fault diagnostic device of a vehicle includes a starting circuit which causes a charger mounted on the vehicle to output a charging start signal and thereby activate a control unit for controlling charging of a battery mounted on the vehicle when a charging gun is connected to the charger. The control unit causes the charger to output the charging start signal when the charger is activated in response to turning on of an ignition switch, and has a fault determination function whereby, if the control unit is not input with the charging start signal, it is judged that a disconnection or power-supply short circuit has occurred in a charging start signal circuit of the starting circuit.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: May 30, 2017
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Yu Watanabe, Noriyoshi Aiba, Takashi Nonaka, Kenji Kondo, Yasuhiro Yamanaka
  • Patent number: 9641012
    Abstract: High voltage charging is aborted when it is detected that a transformer providing the high voltage charge is impaired and is providing an impedance that is too low. In one instance, a voltage for a battery that provides power to the transformer is measured when the battery is substantially unloaded and a voltage is later measured when the battery is loaded during the high voltage charge. A dynamic threshold voltage is computed based on a chosen threshold impedance representing the impedance of the transformer and based the substantially unloaded voltage and on an internal resistance of the battery. When the loaded voltage is less than the threshold voltage, then the high voltage charging is aborted.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 2, 2017
    Assignee: Medtronic, Inc.
    Inventors: Lonny Cabelka, Yanina Grinberg, Troy Jenison
  • Patent number: 9627678
    Abstract: A battery module having a controllable external heat sink and methods of operating the battery module are provided. According to an aspect of the invention, the battery module includes a battery cell, an external circuit connected to the battery cell, and a controller that controls the external circuit. The external circuit includes a first switch and a heat sink. If an internal short circuit within the battery cell is detected, the controller closes the first switch in order to generate heat in the heat sink.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: April 18, 2017
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Simon Lux, Max Von Groll
  • Patent number: 9570778
    Abstract: The present invention aims to provide an electrolyte solution for forming, for example, a secondary battery having excellent oxidation resistance and high-temperature storage characteristics; an electrochemical device such as a lithium-ion secondary battery that contains the electrolyte solution; and a module that contains the electrochemical device. The present invention provides an electrolyte solution containing a solvent and an electrolyte salt, wherein the solvent contains a fluorine-containing compound (A) represented by formula (1) shown below in an amount of 0.01 to 20% by mass, and a fluorine-containing compound (B) represented by formula (2) shown below in an amount of 10 to 80% by mass: Rf1OCOOR??(1) wherein Rf1 is a C1-C4 fluorine-containing alkyl group, and R is a C1-C4 non-fluorinated alkyl group, and Rf2OCOORf3??(2) wherein Rf2 and Rf3 are the same or different, and each is a C1-C4 fluorine-containing alkyl group.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: February 14, 2017
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Shigeaki Yamazaki, Hideo Sakata, Mayuko Taeda, Meiten Koh, Aoi Nakazono, Michiru Kagawa, Akiyoshi Yamauchi
  • Patent number: 9550431
    Abstract: An electric motor drives a drive target and generates electricity. A charge-discharge control circuit controls charging and discharging of a power storage device. A controller controls a charge-discharge control circuit. The controller obtains a calculation value of an internal resistance of the power storage device based on a measured value of an open circuit voltage of the power storage device, and a measured value of an inter-terminal voltage and a measured value of a charge-discharge current when the power storage device is charged and discharged, and obtains a correction value of the internal resistance by correcting the calculation value of the internal resistance based on the measured value of the open circuit voltage.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: January 24, 2017
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Masanori Yumura
  • Patent number: 9547046
    Abstract: A performance deterioration detecting apparatus detects an initial state of sudden deterioration in performance of an energy storage device as a performance deterioration start state, and includes: a first acquiring unit configured to acquire a first maximum variation amount as a maximum value of a capacity variation amount that is a degree of variation in current carrying capacity relative to variation in voltage of the charged or discharged energy storage device, regarding a capacity-voltage property at a first time point, indicating relation between the capacity variation amount and the voltage; a second acquiring unit configured to acquire a second maximum variation amount as a maximum value of the capacity variation amount regarding the capacity-voltage property at a second time point after the first time point; and a performance deterioration determiner configured to determine that the energy storage device is in the performance deterioration start state at the second time point if a variation amount ra
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: January 17, 2017
    Assignee: GS YUASA INTERNATIONAL LTD.
    Inventors: Yohei Tao, Shigeki Yamate
  • Patent number: 9542883
    Abstract: A device and a method for controlling brightness of an OLED display device are disclosed. The method for controlling brightness of an OLED display device includes the steps of forwarding external brightness control information in a PWM signal or a brightness control data, selecting and normalizing either the PWM signal or the brightness control data into an external brightness adjusting gain, analyzing a received video data to detect a peak brightness value, multiplying the peak brightness value by the external brightness adjusting gain to produce a final peak brightness value, adjusting the R/G/B maximum gamma voltage values according to the final peak brightness value, and generating R/G/B reference gamma voltage sets by using the R/G/B maximum gamma voltage values adjusted thus.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 10, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Jae Lee, Jin-Hyoung Kim, Jae-Sung Son
  • Patent number: 9490645
    Abstract: A battery balancing circuit, system and method are disclosed. The battery balancing circuit comprises a plurality of individual batteries, a plurality of first switches, a plurality of second switches, a first control element, a second control element and a transformer. By controlling the first switch and the second switch to be turned on and controlling the first control element and the second control element to be selectively turned on, when the energy in the individual battery is excessive, the excessive energy in the individual battery is transferred to the buffering battery pack; and when the energy in the individual battery is insufficient, the individual battery absorbs energy from the buffering battery pack. In this way, the balance among individual batteries in the battery pack is accomplished and the service life of the battery pack is prolonged.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: November 8, 2016
    Assignee: DONGGUAN POWERWISE TECHNOLOGY CO.
    Inventor: Daming Shi
  • Patent number: 9485701
    Abstract: A method for assigning a tracking area (TA) is disclosed. A mobility state of a wireless transmit/receive unit (WTRU) is determined and the TA is assigned based on the determined mobility state. Also disclosed is a method for accessing a closed subscriber group (CSG) TA. A CSG TA identifier is received at a WTRU and is stored. A CSG TA broadcast is received and the broadcast CSG TA is accessed if an identifier of the broadcast CSG TA matches the stored CSG TA identifier. Also disclosed is a method for changing a mobility state of a WTRU. A current mobility state of the WTRU is determined and a predetermined metric of the WTRU is examined. The predetermined metric is evaluated to determine if the metric has crossed a threshold and the mobility state is changed based on the evaluated metric.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: November 1, 2016
    Assignee: InterDigital Technology Corporation
    Inventors: Peter S. Wang, Rajat P. Mukherjee, Jin Wang, Shankar Somasundaram, James M. Miller, Ulises Olvera-Hernandez
  • Patent number: 9478983
    Abstract: This disclosure describes techniques for operating a corded electronic device in which a battery and a power control unit manage power draw from an external power source electrically coupled to the corded electronic device using a physical cord, such as a universal serial bus (USB) cable. The power control unit automatically supplements an electrical current continuously drawn by the corded electronic device from the external power source with an electrical current from the battery, when needed. Moreover, the power control unit operates to limit the current drawn from the external power source and the physical cord so as to ensure the current does not exceed any limitations or requirements associated with the external power source or the physical cord.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: October 25, 2016
    Assignee: Honeywell Scanning & Mobility
    Inventors: Ryan Kather, Adam Clifford, Runhong Deng
  • Patent number: 9455578
    Abstract: An algorithm and a direct current (DC) microgrid charge/discharge system with the algorithm are provided that noticeably increases charge/discharge voltage during charging and discharging by connecting a plurality of secondary batteries in series, compared to a single battery, that increases power conversion efficiency of a DC-to-DC (DC/DC) converter for charge/discharge power control by setting an appropriate voltage of a DC microgrid to be about twice a maximum voltage of a battery group, that enables charging and discharging to be stably performed regardless of a change in the battery group by adding a linear constant current source, that increases power conversion efficiency of the DC microgrid charge/discharge system by configuring a DC energy storage system (ESS) used for both charging and discharging with a combination of a typical electrolytic condenser and a super condenser or a group of the secondary batteries, and that simplifies the DC microgrid charge/discharge system.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: September 27, 2016
    Assignees: HBL CORPORATION, LG CNS CO., LTD.
    Inventors: Jeong Moog Kim, Hwan Hee Lee, Tae Hyoung Ryu, Dong Hoon Shin, Cheol Kyu Han
  • Patent number: 9403441
    Abstract: A load-managing electricity service (LMES) system for managing and controlling electricity-consuming loads supplied by a common distribution transformer. The LMES system includes: a communicative distribution transformer (CDT) sensor that includes a transceiver, a sensing circuit and a processor configured to determine whether a power load of the transformer exceeds an upper threshold. The LMES system also includes a load-control device (LCD) configured to communicate with the CDT sensor, and to selectively decrease or increase the power load of the distribution transformer by managing the electricity-consuming leads at consumer premises.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: August 2, 2016
    Assignee: Cooper Technologies Company
    Inventors: Nicholas Ashworth, Robert J. Cox, Joseph E. Childs
  • Patent number: 9368970
    Abstract: One embodiment provides a charge/discharge instruction apparatus, including: a charge/discharge instruction unit which instructs a charge/discharge determination apparatus to perform a charge/discharge control of a battery; a charge/discharge information storage unit which stores charge/discharge information for charging/discharging the battery; a control unit which controls an access request to the battery based on the stored charge/discharge information and contents of the charge/discharge control; a generating unit which generates a communication message concerned with the access request controlled by the control unit; and a communication unit which transmits the communication message concerned with the access request to the charge/discharge determination apparatus.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: June 14, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki Nishibayashi, Keiichi Teramoto, Kotaro Ise
  • Patent number: 9342127
    Abstract: An electronic apparatus that selectively uses as a power source one of a battery and an external power source to be powered therefrom, the electronic apparatus includes: a charging unit that charges the battery through the external power source; a power status determining unit that determines whether the external power source can drive the electronic apparatus; a history storage unit that stores a history of determination results of the power status determining unit; and a charging control unit that sets, to a maximum capacity of the battery, an upper limit of battery remaining power if the history indicates that the external power source can not drive for at least part of a specific past period, or sets the upper limit to a given value lower than the maximum capacity if the history indicates that the external power source can drive throughout the specific past period.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: May 17, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Nobutaka Ishidera
  • Patent number: 9306244
    Abstract: A bidirectional interface circuit includes a first current mirror circuit that copies a first reference current to generate a first current sunk from a first output terminal, a second current mirror circuit that copies a second reference current to generate a second current sunk from a second output terminal, an interception switch that is connected between the first output terminal and the second output terminal, a first comparator that outputs an upper state signal based on a comparison result of a voltage of the first output terminal and a first threshold voltage, a third current mirror circuit that copies one of a third reference current and a fourth reference current to supply a third current flowing to a third output terminal, and a second comparator that outputs a lower state signal based on a comparison result of a voltage of the second output terminal and a second threshold voltage.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: April 5, 2016
    Assignee: Fairchild Korea Semiconductor LTD
    Inventors: Jin-Tae Kim, Chenghao Jin, GwanBon Koo
  • Patent number: 9279859
    Abstract: This application relates a method and a control circuit for determining a charge current of a battery connected to a modulated load, wherein a current limited power source is connected in parallel to the modulated load and the battery for supplying a load dependent current up to a predetermined current limit to the modulated load and the battery. The control circuit comprises means for measuring a current flowing through the battery; means for indicating an overload condition of the current limited power source; and means for determining the charge current of the battery. The means for indicating an overload condition are configured to indicate an overload condition when a sum of a current drawn by the modulated load and a current flowing into the battery exceeds the predetermined current limit of the current limited power source.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: March 8, 2016
    Assignee: Dialog Semiconductor GmbH
    Inventors: Klaus Strohmayer, Stephan Dobretsberger
  • Patent number: 9248752
    Abstract: A charging control system that controls charging of a plurality of vehicles that run on electricity includes: an assignment unit that assigns an order of priority relating to charging to the plurality of vehicles based on a predetermined index; a receiving unit that receives electric power demands that are requested from an electric power supply side; and a control unit that selects from among the plurality of vehicles in the order of highest priority charging-object vehicles in which the ON/OFF setting for turning charging ON and OFF is to be set to ON, and sets the ON/OFF setting of charging-object vehicles to the ON setting. The control unit changes the number of charging-object vehicles in response to changes in electric power demands over time.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: February 2, 2016
    Assignees: NEC CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Ryosuke Kuribayashi, Hitoshi Yano, Koji Kudo, Kazuhiko Ogimoto, Kazuto Kataoka, Takashi Ikegami