To Determine Load/no-load Voltage Patents (Class 324/429)
  • Patent number: 10444263
    Abstract: Provided is a battery monitoring system that has a high level of safety even under a state in which characteristics of a reference voltage circuit are deteriorated. The battery monitoring system has a configuration in which: a reference voltage of a first battery monitoring IC is monitored by a second battery monitoring IC; and the second battery monitoring IC outputs, when detecting that the reference voltage reaches a value falling outside a predetermined range, a signal indicating an abnormality of the reference voltage to the first battery monitoring IC, and the first battery monitoring IC stops monitoring of a battery when the signal indicating the abnormality of the reference voltage is input to the first battery monitoring IC.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: October 15, 2019
    Assignee: ABLIC INC.
    Inventors: Kazuaki Sano, Toshiyuki Koike, Atsushi Sakurai, Hiroshi Mukainakano
  • Patent number: 10446885
    Abstract: A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: October 15, 2019
    Inventors: Patrick J. Clarke, John S. Whiting
  • Patent number: 10444291
    Abstract: A method determines a potential of an anode and/or a potential of a cathode in a battery cell. The method measures a current flowing through the battery cell, determines a charge transfer resistance of the battery cell, ascertains a charge transfer resistance of the anode and a charge transfer resistance of the cathode, ascertains a depth of discharge, ascertains an anode residual voltage and a cathode residual voltage from the depth of discharge from an idle voltage, ascertains an anode excess potential from the charge transfer resistance of the anode and the current and ascertains a cathode excess potential from the charge transfer resistance of the cathode and the current. The method ascertains the potential of the anode from the anode residual voltage and the anode excess potential and ascertains the potential of the cathode from the cathode residual potential and the cathode excess potential.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 15, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Olivier Cois, Thomas Dufaux, Andre Boehm
  • Patent number: 10444296
    Abstract: A control device of the present invention includes: an OCV estimating unit that estimates, based on a voltage value and a current value of a controlled device, an OCV of the controlled device; a capacity calculating unit that calculates an integrated capacity of the controlled device based on the current value of the controlled device; and a control unit that controls discharging and charging of the controlled device, and calculates a full capacity of the controlled device based on: a first SOC and a second SOC at a predetermined first OCV and a predetermined second OCV during the discharging or the charging of the controlled device; a first integrated capacity and a second integrated capacity at the first OCV and the second OCV during the discharging; and a third integrated capacity and a fourth integrated capacity at the second OCV and the first OCV during the charging.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: October 15, 2019
    Assignee: NEC Corporation
    Inventors: Junichi Miyamoto, Yuichi Imamura, Shingo Takahashi, Sho Ohtani, Hiroshi Kajitani
  • Patent number: 10401437
    Abstract: A circuit arrangement is for determining the cell voltage of an individual cell in a cell grouping of a series circuit of individual cells of an accumulator pack. Potential points are formed between electrically adjacent individual cells of the series circuit. The potentials of the potential points which follow one another in the series circuit increase in absolute value starting from a reference potential. Each potential point is connected to a measuring input of an evaluation device via a measuring resistor and a switch. In order to measure the cell voltage of an individual cell, the measuring input is connected to the reference potential via a capacitor. The evaluation device registers the charging time of the capacitor to a predefined voltage. On the basis of the registered charging time, the evaluation device determines the cell voltage of the measured individual cell.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: September 3, 2019
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Martin Schurr, Gernot Liebhard, Christian Heigemeyr, Markus Kulzer
  • Patent number: 10340702
    Abstract: Embodiments disclose an energy generation system including a photovoltaic (PV) array having a plurality of PV modules for generating direct current (DC) power, a plurality of Opti-battery packs coupled to the PV array, where each Opti-battery pack is coupled to a respective PV module and configured to receive DC power from the respective PV module, and an inverter configured to receive DC power from the plurality of Opti-battery packs and to convert the DC power to alternating current (AC) power.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: July 2, 2019
    Assignee: SolarCity Corporation
    Inventor: Sandeep Narla
  • Patent number: 10338147
    Abstract: Various embodiments of the present technology may comprise methods and apparatus for determining a relative state of charge of battery. According to various embodiments, the methods and apparatus may operate to establish continuity between the RSOC values that are computed before and after a change in the charge mode of the battery. During a constant voltage charge mode, the methods and apparatus further estimate the RSOC value according to a linear relationship between the charging current and the RSOC.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: July 2, 2019
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Yoshinobu Nishiyama
  • Patent number: 10288694
    Abstract: A secondary battery monitoring device is equipped with a resistance circuit and a detection circuit detecting an abnormality of a secondary battery, a current generation circuit generating a failure detection circuit for setting an output terminal of the resistance circuit to a failure diagnosis voltage, and a switch which permits the failure detection circuit to flow to the output terminal of the resistance circuit by switching. Further, a method for diagnosing failure of the secondary battery monitoring device is provided.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 14, 2019
    Assignee: ABLIC INC.
    Inventors: Yasuhiro Miyamoto, Nao Otsuka, Atsushi Igarashi
  • Patent number: 10203358
    Abstract: A system for determining a voltage out-of-range high condition of a battery module is provided. A microcontroller determines first, second, and third voltage values from first, second, and third voltage sensors, respectively, coupled to first, second, and third battery cells, respectively; and determines a battery module voltage value based on a fourth signal. The microcontroller sums the first, second, and third voltage values to obtain a battery module high voltage sum value. The microcontroller generates a first control signal to induce a contactor to transition to an open operational position to electrically decouple the battery module from an electrical load, if a difference between the battery module high voltage sum value and the battery module voltage value is greater than or equal to a battery module voltage out-of-range high error value.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: February 12, 2019
    Assignee: LG Chem, Ltd.
    Inventor: Kerfegar K. Katrak
  • Patent number: 10205329
    Abstract: An intelligent charger with a diagnostic function and a charging method. The intelligent charger includes a control module, a diagnosis module, a charging module, a multi-path switch and a detection module. The control module is sequentially connected to the diagnosis module, the charging module and the multi-path switch; and the detection module is sequentially connected to an external connection terminal of a battery, the multi-path switch and the fault diagnosis module. The charging method includes a charging mode and a diagnosis mode; the diagnosis mode includes a two part function, namely fault diagnosis and lifetime detection; the fault diagnosis is detecting a fault problem which can occur in the battery and providing a prompt; and the lifetime detection is detecting the current capacity of a battery, and determining current battery life through the ratio of current capacity to rated capacity.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 12, 2019
    Assignees: XUZHOU HENGYUAN ELECTRICAL APPLIANCES CO., LTD, CHINA UNIVERSITY OF MINING AND TECHNOLOGY
    Inventors: Gongbo Zhou, Houlian Wang, Zhencai Zhu, Zhixiang Li, Wei Li, Guohua Cao
  • Patent number: 10193360
    Abstract: An uninterruptible power supply (UPS) includes a first battery set and a second battery set. The UPS includes a charging circuit to charge the battery sets using alternating current (AC) power. The UPS includes a slot receptive to insertion of different types of output modules that each include an inverter to convert direct current (DC) power from the first and second battery sets, including a first type that connects the first and second battery sets in parallel and a second type that connects the battery first and second sets in series.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 29, 2019
    Assignee: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP
    Inventors: Abhishek Banerjee, Hai Ngoc Nguyen
  • Patent number: 10145901
    Abstract: This disclosure relates to a method for the management of the electrical current supply in a motor vehicle having a combustion engine, wherein the charge state of a battery is detected and characterized as a discrete variable that indicates whether the prevailing charge state is below or above a calibrated threshold value. If the discrete variable indicates that the prevailing charge state is below the calibrated threshold value, the battery is charged using a relatively high voltage over a predetermined time period in such a manner that all cells of the battery are charged. If the discrete variable indicates that the prevailing charge state is above the calibrated threshold value, different temperature-dependent voltage set points of an electric generator in the vehicle are set in dependence upon a prevailing energy conversion efficiency level of the drivetrain that is detected and characterized as a further discrete variable.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: December 4, 2018
    Assignee: Ford Global Technologies, LLC
    Inventor: Mark Eifert
  • Patent number: 10060429
    Abstract: A conductivity sensor is provided. The sensor comprises at least one electrode being embedded in a cylindrical non-conductive body such that one end of each one of the at least one electrode is exposed to a sample volume, wherein the sensor further comprises a support body to which the cylindrical body is engagable with, which support body comprises means for attaching said support body to a frame structure in a fluid tight manner.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: August 28, 2018
    Assignee: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventors: Johan Stenbeck, Fredrik Johansson
  • Patent number: 10031188
    Abstract: A system for estimating the state of health (SOH) of a battery of an electric vehicle includes a charger recognition unit, a discharge instruction unit, and an SOH estimator. The charge recognition unit generates a charge recognition signal based on a charge state of the battery. The discharge instruction unit receives the charge recognition signal when the battery reaches at least one predetermined charge voltage value, temporarily stops charging of the battery, and discharges the battery to a certain level. Discharge is performed by operating at least one function of the electric vehicle. The SOH estimator estimates the SOH of the battery based on a voltage change measured during discharging of the battery based on the at least one predetermined current value.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: July 24, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jiho Lee, Jeongmin Shin
  • Patent number: 10024922
    Abstract: A method and apparatus for receiving a selection of a first device under test. Connecting the first device under test to a load based at least on a closed high-side driver relay and a closed low-side driver relay for a first switch, from a plurality of devices under test. Closing at a first rate a high-side driver relay of a first switch based at least on the received selection. Closing at a second rate a low-side driver relay of the first switch based at least on the received selection, wherein the first rate and second rate are different.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: July 17, 2018
    Assignee: UChicago Argonne, LLC
    Inventors: David C. Robertson, Panagiotis D. Prezas, Lee K. Walker
  • Patent number: 9956892
    Abstract: An electrically powered vehicle includes a power storage device, a motor, a limitation control unit, a notification unit, and a changing unit. The motor generates traveling driving power using electric power output from the power storage device. The limitation control unit limits possible output power, which indicates electric power able to be output from the power storage device, based on a load state of the power storage device. The notification unit notifies a warning when the possible output power is smaller than a threshold value for notifying a driver of decrease of the traveling driving power. The changing unit increases, when the load state of the power storage device is high, the threshold value to be larger than the threshold value when the load state of the power storage device is low.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: May 1, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaya Yamamoto, Jun Yasue
  • Patent number: 9897661
    Abstract: Systems, methods and computer program products are described herein that can automatically determine the number of functional rechargeable batteries within an electronic device that includes a plurality of rechargeable batteries without having to open up the electronic device to inspect the batteries. In an embodiment, an external computing device or the electronic device itself determines a measure of impedance associated with the plurality of rechargeable batteries based on a first voltage level of the plurality of rechargeable batteries obtained during a discharging state thereof and a second voltage level of the plurality of rechargeable batteries obtained during a charging state thereof and then determines the number of operational rechargeable batteries within the plurality of rechargeable batteries based on the measure of impedance.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 20, 2018
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: David T. Nelson, Da Hai Hu, Hamid Shayesteh-Pour
  • Patent number: 9874595
    Abstract: An insulation detecting device includes a flying capacitor that holds a charged voltage, and a measurement and calculation unit that measures the charged voltage of the flying capacitor and calculates a ground fault resistance formed between a direct-current power supply electrically insulated from a ground, and the ground, based on the measured voltage. The flying capacitor includes one or a plurality of first capacitors, one or a plurality of second capacitors connected with the first capacitor in parallel, and a parallel cancellation switch arranged between the first capacitor and the second capacitor, and which performs parallel connection, and cancellation of the parallel connection, between the first capacitor and the second capacitor. A capacitance of the flying capacitor is variably changed by turning on or turning off of the parallel cancellation switch.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: January 23, 2018
    Assignee: YAZAKI CORPORATION
    Inventors: Yoshihiro Kawamura, Ryosuke Arigaya
  • Patent number: 9847656
    Abstract: There are provided an energy storage system and a method for driving the energy storage system, which can exactly measure discharge current by calculating measurement times of the discharge current according to the frequency of the discharge current. An energy storage system includes a battery rack, a battery management system configured to control charging and discharging of the battery rack, and a power conversion system configured to supply discharge current of the battery rack as an alternating current having a frequency to the battery management system. The battery management system is further configured to calculate measurement times of the discharge current, measure the discharge current at the calculated measurement times, and control the charging and discharging of the battery rack based on the measured discharge currents.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: December 19, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Sang-Min Ha
  • Patent number: 9753090
    Abstract: A method for determining an internal ohmic resistance of a first battery module includes measuring a first voltage intensity of the first battery module. The first battery module is connected to at least a second battery module. The at least second battery module is under a load current. A second voltage intensity of the first battery module is measured. The first battery module is disconnected from the at least second battery module to enable the measurement of the first voltage intensity and the connection of the first battery module.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 5, 2017
    Assignees: Robert Bosch GmbH, Samsung SDI Co., Ltd.
    Inventor: Holger Fink
  • Patent number: 9742218
    Abstract: A charging control unit is used in a system having an engine, an electric power generator, and a battery charged by electric power generated by the electric power generator and being capable of executing stop control for prohibiting the engine from restarting in a state where the engine is stopped.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: August 22, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kohei Tochigi, Koji Ito, Michihiro Miyashita
  • Patent number: 9735567
    Abstract: A semiconductor device is provided for measuring a voltage of each of plural unit cells series-coupled in multi-stage and configuring an assembled battery. The semiconductor device includes two terminals coupled to two nodes which are electrodes of a unit cell and coupled with other unit cells, and a voltage measurement circuit which measures the inter-terminal voltage between the two terminals. The device also includes a down-convert level shifter circuit which converts the inter-terminal voltage into a low-potential-side inter-terminal voltage based on a ground potential, and a comparator circuit which compares the converted low-potential-side inter-terminal voltage with a predetermined reference voltage.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: August 15, 2017
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Yoshitaka Muramoto, Junko Kimura, Hirohiko Hayakawa
  • Patent number: 9705161
    Abstract: A battery module includes a battery block, a cover member, a circuit board, a wiring member, and a first connection member. The battery block includes a plurality of battery cells, and has a terminal surface. Terminals of the plurality of battery cells are arranged on the terminal surface. The cover member is arranged on or above the terminal surface of the battery block. The circuit board overlaps the cover member, and includes a voltage detection circuit for detecting terminal voltages of the plurality of battery cells. The wiring member overlaps the cover member, and is electrically connected to the terminals of the plurality of battery cells. The first connection member electrically connects the circuit board to the wiring member.
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: July 11, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Yoshitomo Nishihara, Yasuhiro Asai, Tsuyoshi Watanabe
  • Patent number: 9525300
    Abstract: An electricity storage system includes: an electricity storage unit (10, 11) that is subjected to charging and discharging; a voltage sensor (20, 20a) that detects a voltage value of the electricity storage unit; and a controller (30) that terminates the charging of the electricity storage unit when the detected voltage value reaches a charging termination voltage value. The controller calculates a voltage drop, which is associated with interruption of constant current charging, on the basis of the detected voltage value while the constant current charging is performed in the electricity storage unit, and sets the charging termination voltage value in accordance with the amount of voltage drop.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: December 20, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Koji Aridome
  • Patent number: 9407098
    Abstract: Some embodiments provide a system that determines a battery chemistry for a battery in a peripheral device. During operation, the system determines a first voltage of the battery at a first time and a second voltage of the battery at a second time. The first voltage and the second voltage are then compared to one or more predetermined battery usage profiles to determine the battery chemistry.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: August 2, 2016
    Assignee: Apple Inc.
    Inventors: Marco Sebastiani, Louis W. Bokma, Nima Parivar
  • Patent number: 9252766
    Abstract: A no-load detecting circuit and the method thereof are disclosed. The no-load detecting circuit may be applied in switching mode power supplies or other circuits. The no-load detecting circuit comprises: a variable resistance circuit coupled in series to a load of the switching mode power supply; and a first comparison circuit coupled to the variable resistance circuit to receive the voltage across the variable resistance circuit, wherein based on the comparison of the voltage across the variable resistance circuit and a first threshold, the first comparison circuit generates a no-load detecting signal indicative of the load status; wherein the equivalent resistance of the variable resistance circuit varies based on the varying of the load of the switching mode power supply.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 2, 2016
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Yuancheng Ren, En Li, Naixing Kuang, Yike Li
  • Patent number: 9194917
    Abstract: The disclosure provides a method for transmitting data between a control device and at least one measurement device via a bus system. The method includes recording first measurement data relating to at least one measurement variable with the at least one measurement device with a first measurement data resolution within a first measurement cycle, transmitting the recorded first measurement data to the bus system at a first measurement frequency within the first measurement cycle. The method further includes recording second measurement data relating to the at least one measurement variable with the at least one measurement device with a second measurement data resolution within a second measurement cycle. The second measurement data resolution is less than the first measurement data resolution. The method also includes transmitting the recorded second measurement data to the bus system at a second measurement frequency within the second measurement cycle.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: November 24, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Christoph Brochhaus
  • Patent number: 9091739
    Abstract: A method for detecting SOC and SOH of a storage battery includes: calculating an SOC value of the storage battery with use of an SOC calculation unit based on a measured voltage value or a measured current value of the storage battery and calculating an SOH value of the storage battery with use of an SOH calculation unit based on the SOC value; further calculating a new SOC value with use of the SOC calculation unit based on the SOH value and calculating a new SOH value with use of the SOH calculation unit based on the new SOC value, these further calculations of SOC value and SOH value being repeated a prescribed n times of at least one so as to obtain an nth calculated SOC value and an nth calculated SOH value; outputting the nth calculated SOH value as an SOH output value and outputting the nth calculated SOH value as an SOC output value; and storing the SOH output value into a memory.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: July 28, 2015
    Assignee: THE FURUKAWA ELECTRIC CO., LTD
    Inventors: Noriyasu Iwane, Koji Fujimura
  • Patent number: 9014942
    Abstract: An idling stop device installed in a vehicle includes a microcomputer, a detector, a storage, and a controller. The microcomputer automatically stops an engine of the vehicle when a prescribed stopping condition is satisfied, and automatically activates a starter motor of the engine when a prescribed activating condition is satisfied. The detector detects whether a drive voltage of the microcomputer, which is obtained by dropping a voltage of a battery of the vehicle is less than a threshold value. The storage stores, irrespective of a state of the microcomputer, information indicating that the detector has detected that the drive voltage is less than the threshold value. The controller drops an increasing speed of a current for driving the starter motor when the microcomputer activates the stator motor under the condition that the information is stored in the storage.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 21, 2015
    Assignee: Fujitsu Ten Limited
    Inventors: Ryoh Izumoto, Motoki Komiya, Yuichiro Shimizu, Yoshinori Shibachi
  • Patent number: 9007068
    Abstract: A method is provided for current-based detection of an electrical fault in an electrical network of a motor vehicle, the network having at least: one battery, one pulse-controlled inverter, one d.c. voltage converter, and an intermediate circuit associated with the pulse-controlled inverter. The method includes: detecting magnitudes of each a battery current, a d.c. voltage converter current, and an intermediate circuit current; comparing current magnitudes according to provided equations; and checking based on the comparison of whether a specifiable deviation has been exceeded. An alternative method for voltage-based detection of an electrical fault in an electrical network of a motor vehicle includes: detecting magnitudes of each a battery voltage, a d.c. voltage converter voltage, and an intermediate circuit voltage; comparing voltage magnitudes according to provided equations; and checking based on the comparison of whether a specifiable deviation has been exceeded.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: April 14, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Beqir Pushkolli, Ulrich Klein
  • Patent number: 8994334
    Abstract: The battery state-of-charge calculation device (100) is provided with a SOCV calculation unit (5) which outputs a first state of charge calculated based on voltage data, a SOCI calculation unit (6) which outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit (12) which calculates an impedance voltage value based on an effective state of charge and the current data, a static determination unit (7) which determines that the impedance voltage value remains static for a predetermined time or longer in a range identified by a predetermined threshold value and outputs the determination result; and a SOC decision unit (20) which, based on the determination result, outputs the first state of charge as the effective state of charge where the impedance voltage value is static and outputs the second state of charge as the effective state of charge where the impedance voltage value is not static.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: March 31, 2015
    Assignees: Mitsubishi Heavy Industries, Ltd., Kyushu Electric Power Co., Inc.
    Inventors: Tetsuro Shigemizu, Masami Iida, Takehiko Nishida, Masazumi Ohishi, Kazuyuki Adachi, Shinji Murakami, Yoshihiro Wada
  • Patent number: 8965722
    Abstract: An apparatus for calculating a residual capacity of a secondary battery is provided. The apparatus calculates the residual capacity of energy in the secondary battery which is charged/discharged. The apparatus includes an arithmetic unit which estimates and calculates a first residual capacity based on a charge/discharge voltage corresponding to a residual capacity of the secondary battery, calculates a second residual capacity based on an integrated value of a charge/discharge current of the secondary battery, weights the charge/discharge voltage of the secondary battery with the first residual capacity or the second residual capacity according to the voltage changing rate, and combines the results of the weighting to obtain the residual capacity of the secondary battery.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: February 24, 2015
    Assignee: Denso Corporation
    Inventors: Syuuhei Yoshida, Satoru Suzuki
  • Patent number: 8958934
    Abstract: A battery pack includes: a battery unit in which a plurality of battery modules with a plurality of secondary batteries connected in series to each other is connected in parallel to each other so that output current; and a battery management unit. The battery management unit calculates a first allowable current value of each of the plurality of battery modules and calculates second allowable current values of the other battery modules based on the first allowable current value of one battery module from the plurality of battery modules. The battery management unit calculates a value corresponding to the sum of the first allowable current value used as the reference and the respective second current values as an allowable current value when each of the second allowable current values is equal to or smaller than the first allowable current value of the corresponding battery module.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: February 17, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Takehiko Nishida
  • Patent number: 8957686
    Abstract: A voltage measurement device, includes: a multiplexer that includes a plurality of input terminals at which voltage signals are inputted; a control circuit that performs voltage measurement by acquiring the voltage signal at a selected input terminal from the multiplexer; and a decision circuit that makes a decision as to whether or not an abnormality has occurred, based upon voltage values measured by the control circuit, wherein: the plurality of input terminals include input terminals at which voltage signals from a plurality of subjects of measurement are inputted, and an input terminal at which a potential for diagnosis is inputted; the control circuit, when performing voltage measurement for the plurality of subjects of measurement, measures voltages at the input terminals at which the voltage signals from the plurality of subjects of measurement are inputted, and a voltage at the input terminal at which the potential for diagnosis is inputted.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: February 17, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Masahiro Ueda, Yoshinori Aoshima, Akihiko Kudo
  • Patent number: 8941360
    Abstract: Provided are a battery state monitoring circuit and a battery device, in which, even when one secondary battery becomes an overcharged state or an overdischarged state and then a voltage detection circuit operates, power is not consumed in only the one secondary battery. The battery state monitoring circuit includes: a plurality of voltage detection circuits which are provided for a plurality of secondary batteries, respectively, for detecting voltages of the plurality of secondary batteries; and a current bypass circuit provided in each of the plurality of voltage detection circuits, for allowing an operation current of the each of the plurality of voltage detection circuits to flow into a ground terminal. Therefore, when only one secondary battery becomes an overcharged state or an overdischarged state, the battery device operates so that the power of all the secondary batteries is consumed to prevent voltages between the secondary batteries from being unbalanced.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: January 27, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Hiroshi Saito, Kazuaki Sano
  • Patent number: 8941386
    Abstract: A busbar for battery electrode post connection with a terminal for voltage detection is provided. Both ends of a length direction of a rectangular thin plate of a conductive metal are left and an elongated opening is formed in a center. Two holes through which an electrode post of one battery and an electrode post of an adjacent battery are inserted are respectively formed in the rectangular thin plates of both sides around the elongated opening of the center. A terminal for voltage detection is extended integrally to the rectangular thin plate from an edge of the rectangular thin plate. The two holes overlap in a state of where the rectangular thin plate is folded in two with respect to the elongated opening. The terminal for voltage detection can be erected from the rectangular thin plate by folding the terminal for voltage detection in a vertical direction.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 27, 2015
    Assignee: Yazaki Corporation
    Inventors: Tomohiro Ikeda, Shinichi Yanagihara, Hideki Inoue
  • Patent number: 8933702
    Abstract: A battery monitor determines an internal resistance of a battery cell of a battery having parallel connected battery strings which accounts for errors introduced by the parallel connected battery strings. When determining the internal resistance of a battery cell, the battery monitor determines a baseline intercell resistance of an intercell connecting the negative terminal of the battery cell to the positive terminal of an adjacent battery. The battery monitor then applies a momentary load across the battery cell and immediately prior to releasing the load, measures the voltage across the battery cell (loaded voltage) and the voltage across the intercell. The battery monitor then calculates the current flowing through the intercell (intercell current) by dividing the measured voltage across the intercell by the determined intercell resistance.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: January 13, 2015
    Assignee: Liebert Corporation
    Inventors: Edward W. Deveau, Xiaoquan Bie
  • Patent number: 8878558
    Abstract: A load testing machines includes: six resistance units; six cooling fans; insulators between the resistance units and the cooling fans; and connection cables, in which: each of the resistance units includes a plurality of steps of resistor groups arranged in a z-direction and each formed of a plurality of rod-shaped resistors parallel to a x-direction connected together in series arranged at predetermined intervals in a y-direction; the six cooling fans face the resistance units, respectively, in the z-direction; the connection cables are cables used for serially and detachably connecting resistor groups next to each other in the y-direction of two resistance units next to each other in the y-direction with an interval of not smaller than a second distance in between; and the insulators each have a size corresponding to the rated voltage of a target power supply of a power supply load test to be conducted using a resistance unit group.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 4, 2014
    Assignee: Tatsumi Corporation
    Inventor: Toyoshi Kondo
  • Patent number: 8860422
    Abstract: The invention relates to an evaluation circuit for detecting the voltage in battery cells of a battery system which are preferably connected in series. The evaluation circuit includes serially connected resistors, the number of which is equal to the number of battery cells for which the voltage is to be detected. One of the resistors is associated with each of the battery cells.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: October 14, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Stefan Butzmann
  • Patent number: 8810200
    Abstract: A load system includes a power supply input unit for load test of an external power supply, a charging circuit or a charger to which electric power from the power supply is supplied via the power supply input unit, a plurality of loads to which the electric power from the charging circuit or the charger is supplied, and a control circuit that switches selectively and connects the plurality of loads to the charging circuit or the charger. The plurality of loads is a plurality of storage batteries as a load resistance. The control circuit is configured to switch selectively and connect the plurality of storage batteries to the charging circuit or the charger such that the storage battery connected to the charging circuit or the charger among the plurality of storage batteries is charged by the charging circuit or the charger.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: August 19, 2014
    Assignee: Tatsumi Corporation
    Inventor: Toyoshi Kondo
  • Patent number: 8803478
    Abstract: A battery pack is provided. The battery pack includes first battery cells, a second battery cell coupled to one of the first battery cells, a voltage sensing and balancing circuit for measuring voltages of the first battery cells and for maintaining voltage balance between the first battery cells, a controller that includes an analog-to-digital (A/D) converter, and an analog switch for measuring a voltage value of the second battery cell and for transferring the measured voltage value to the A/D converter. The controller is for controlling charging and discharging of the first and second battery cells. The analog switch includes a flying capacitor, a first switch unit for transferring a voltage between the second battery cell and the flying capacitor, a second switch unit for transferring a voltage of the flying capacitor to the A/D converter, and a first diode for protecting a voltage source from a surge current.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: August 12, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jongwoon Yang, Susumu Segawa
  • Patent number: 8779784
    Abstract: Provided is an insulation resistance measuring circuit including: a source resistor unit including a first source resistor connected between a positive terminal of a battery and a second source resistor and the second source resistor connected between a negative terminal of the battery and the first source resistor; a voltage sensing unit sensing a voltage of the first source resistor as a first voltage and sensing a voltage of the second source resistor as a second voltage; and an insulation resistance measuring unit measuring an insulation resistance of the battery through a value obtained by dividing a difference between the first and second voltages by a sum between the first and second voltages.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 15, 2014
    Assignee: SK Innovation Co., Ltd.
    Inventors: Jeong Hwan Yang, Ki Seok Choi, Jae Hwan Lim
  • Publication number: 20140159737
    Abstract: A battery remaining amount detection unit includes: a voltage measurement section configured to measure a voltage of a battery; an open-circuit voltage calculation section configured to calculate an estimated open-circuit voltage; and a remaining amount detection section configured to detect a remaining amount of the battery from the estimated open-circuit voltage, in which the open-circuit voltage calculation section is configured to calculate a first voltage change amount as a voltage change amount from a no-load voltage when no load is applied to the battery and a closed-circuit voltage when a load is applied to the battery, and the open-circuit calculation section is configured to calculate the estimated open-circuit voltage based on the closed-circuit voltage of the battery and the first voltage change amount.
    Type: Application
    Filed: November 15, 2013
    Publication date: June 12, 2014
    Applicant: Sony Corporation
    Inventor: Isao Suzuki
  • Patent number: 8742762
    Abstract: An accumulator control device includes a first electrical connection configured to connect the accumulator control device to a local accumulator. A second electrical connection is connected to the first electrical connection and configured to connect to a remote auxiliary electrical power supply device. A control unit is configured to measure at least one of a parameter of the accumulator and an environmental parameter and to transmit at least one of the at least one measured parameter and a value calculated using the at least one measured parameter to the remote auxiliary electrical power supply device via a communication interface.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: June 3, 2014
    Assignee: Phoenix Contact GmbH & Co. KG
    Inventors: Hartmut Henkel, Michael Heinemann, Andreas Neuendorf, Mike Wattenberg
  • Patent number: 8736232
    Abstract: A full charge capacity correction circuit including: an integrating unit that calculates an integrated current value; a capacity storing unit that stores a full charge capacity value; a first estimating unit that estimates a storage ratio, which is a ratio of a quantity of stored electricity to an actual full charge capacity, as a first storage ratio; a second estimating unit that estimates a storage ratio; a full charge capacity correction unit that estimates a new full charge capacity value, and stores the estimated new full charge capacity value; an open circuit ratio estimating unit that uses a condition in which the rechargeable battery is in an open circuit state, and estimates the storage ratio based on a terminal voltage of the rechargeable battery; and a correction control unit that uses the open circuit ratio estimating unit as the first estimating unit or the second estimating unit.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: May 27, 2014
    Assignee: Panasonic Corporation
    Inventors: Toshiyuki Nakatsuji, Tsuyoshi Morimoto
  • Patent number: 8713363
    Abstract: The invention provides a power supply system for a data storage system, the power supply system comprising: a first power supply unit for supplying power to the storage system; a second power supply unit independent from the first power supply unit for supplying power to the storage system; an auxiliary power supply; a power redundancy controller, arranged to monitor the region of an efficiency curve within which the first and/or second power supplies are operating in and control the first and second power supplies accordingly such that the either or both of the first and second power supplies are providing power at any one time, wherein in the event of failure of a power supply unit when only one of the power supply units is operating, the power redundancy controller is arranged to provide power supply to the data storage system from the auxiliary power supply.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: April 29, 2014
    Assignee: Xyratex Technology Limited
    Inventor: Tim Williams
  • Patent number: 8704483
    Abstract: A method that includes affixing a radio frequency identification tag on a storage battery at a battery manufacturing plant. The method also includes storing battery manufacturing information into the radio frequency identification tag at the battery manufacturing plant. The battery manufacturing information includes a battery algorithm suitable for use in testing the storage battery.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: April 22, 2014
    Assignee: Midtronics, Inc.
    Inventors: Kevin I. Bertness, John S. Philbrook
  • Patent number: 8648730
    Abstract: An alarm for detecting radiation and/or pollutants such as smoke, carbon monoxide or the like, the alarm comprises: an alarm circuit (12) including detection means (14) for detecting the radiation and/or pollutants, and an audible alarm (16); a power supply circuit (24) connectable to an external AC power supply for supplying standby power to the alarm circuit (12); and a battery (20) for supplying power to the audible alarm (16) when the alarm is energized. The power supply circuit (20) is configured to supply current to the alarm circuit (12) at a level less than that required to energize the audible alarm (16).
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: February 11, 2014
    Assignee: Sprue Safety Products Ltd
    Inventors: Nicholas Rutter, Stuart Hart
  • Patent number: 8639413
    Abstract: A power supply system comprises a chargeable power storage device; a charging device configured to perform external charging for charging the power storage device using alternating-current power supplied from an external power supply; an air conditioner receiving electric power from the charging device and the power storage device and air-conditioning a compartment in a vehicle; an auxiliary machinery load; and an ECU. The ECU controls at least one of the charging device and the auxiliary machinery load so as to increase the electric power output from the power storage device in a case where overcharging of the power storage device is expected when the air conditioner is intermittently operated during external charging.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: January 28, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hiroki Endo
  • Patent number: 8626679
    Abstract: Disclosed is an apparatus and method for estimating a state of charge (SOC) in a battery, the apparatus including a detector unit; a soft computing unit for calculating and outputting a battery SOC estimation value by processing a current, a voltage and a temperature detected by the detector unit using a computing algorithm, which is a fuzzy algorithm implemented as a neural network, the soft computing unit storing the battery SOC estimation value in a memory, where the fuzzy algorithm has a form expressed as F=?(P,X)W, where ? is one of a fuzzy radial function, a radial basis function, and an activation function in the neural network, P is a learning parameter, X is an input, and W is a weight to be updated during learning.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: January 7, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Il Cho, Do Youn Kim, Do Yang Jung