To Determine Ampere-hour Charge Capacity Patents (Class 324/427)
  • Patent number: 10440805
    Abstract: The invention provides a radiation irradiation device that can appropriately manage the residual capacity of a battery without being influenced by the internal resistance of the battery. The radiation irradiation device includes a radiation generating part that generates radiation; a battery part that supplies electric power to the radiation generating part; and a residual capacity calculation part that calculates the residual capacity of the battery part. The residual capacity calculation part calculates the residual capacity of the battery part on the basis of a current flowing into the battery part, an internal resistance of the battery part, and a voltage of the battery part.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: October 8, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Ryo Imamura
  • Patent number: 10393813
    Abstract: A method is provided for determining capacity of a battery. The method includes: defining a model for a battery, where the model relates terminal voltage of the battery to charged capacity of the battery; taking a plurality of voltage measures of the battery, where the voltage measures are taken through a range of states of charge and the range excludes the battery being fully charged and fully discharged; determining the parameters of the model by fitting the plurality of voltage measures to the model; determining an incremental capacity curve for the battery by taking derivative of the model; and quantifying a peak of the incremental capacity curve to thereby determine a capacity of the battery.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: August 27, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Jing Sun, Huei Peng, Caihao Weng
  • Patent number: 10393817
    Abstract: A method for determining a reference energy profile has comparing a first course and a second course. The first course describes an energy absorption of a first battery during a first charge cycle. The second course describes the energy absorption of the first or a second battery during a second charge cycle which follows after the first charge cycle. The comparison is performed for a plurality of time intervals. The method has determining a deviation between the first and the second course for each of the plurality of time intervals. In addition, the method has determining an amount of electrical energy based on the deviation for each of the time intervals, wherein the amount of electrical energy describes a preset default value of the reference energy profile for an amount of energy to be fed to a battery to be formed during a formation process of the battery to be formed for each of the time intervals.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 27, 2019
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Maximilian Bruch, Stephan Lux, Matthias Vetter
  • Patent number: 10386422
    Abstract: The invention pertains to a method of determining the State of Health (SoH) and/or State of Charge (SoC) of a rechargeable battery during use of said battery, the method comprising the steps of: generating a first excitation signal within a first selected frequency range, generating a second excitation signal within a second selected frequency range, applying said first and second excitation signals on said rechargeable battery, measuring the response signal for each of said two excitation signals, and then calculate the Electrochemical Impedance (El) as the ratio between the excitation signals and respective response signals, and then determine the SoH and/or SoC of the rechargeable battery by comparing the calculated El to a circuit model for the battery and/or determining the SoH and/or SoC of the rechargeable battery by directly evaluating characteristics of the El. The invention also pertains to a battery management system configured for executing the steps of the method according to the invention.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: August 20, 2019
    Assignee: LITHIUM BALANCE A/S
    Inventors: Andreas Elkjaer Christensen, Rasmus Rode Mosbaek
  • Patent number: 10371753
    Abstract: In some variations, a method of real-time monitoring of battery capacity comprises correlating electrode open-circuit voltage with electrode state of charge for a selected electrode; compiling a look-up table to correlate the electrode open-circuit voltage with the electrode capacity at different values of the active-material capacity; during real-time operation, identifying first and second times at which battery terminal voltages are approximated as battery open-circuit voltages; and calculating battery capacity based on the difference in battery open-circuit voltages at the first and second times, current integration, and the look-up table. No reference electrode is needed, and a complete battery charge/discharge is not necessary to determine the capacity. This technique can therefore be implemented on-board and in real time to provide reliable capacity estimation even as the battery ages.
    Type: Grant
    Filed: December 20, 2014
    Date of Patent: August 6, 2019
    Assignee: HRL Laboratories, LLC
    Inventors: Shuoqin Wang, John Wang, Souren Soukiazian, Jason A. Graetz
  • Patent number: 10369899
    Abstract: Set forth herein are systems and methods for determining battery heating conditions and pre-heating lead times of at least a minute or more, based on input parameters and sets of input parameters, to predictively and dynamically heat a secondary battery so that the battery has a specific power output and performance level when used in an electric or hybrid vehicle application.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: August 6, 2019
    Assignee: QuantumScape Corporation
    Inventors: Kevin Hettrich, Tomasz Wojcik
  • Patent number: 10359449
    Abstract: Described are various current measurement techniques that can compensate for drift in shunt resistance. Determining a resistance of a shunt resistor, e.g., coupled to a battery terminal, can include introducing a known signal in sync with the chop phases of a dual system chop scheme, chopping the known signal out in the main signal path, and explicitly extracting the known signal in a parallel, additional signal deprocessing path.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: July 23, 2019
    Assignee: Analog Devices Global
    Inventor: Andreas Callanan
  • Patent number: 10317475
    Abstract: A system a vehicle battery tester configured to test at least one condition of a vehicle battery and to transmit battery condition information relating to the at least one condition of the vehicle battery to a server. The system also includes the server, which is configured to receive the battery condition information from the vehicle battery tester and to transmit, to a consumer, a report generated based at least in part on the battery condition information.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: June 11, 2019
    Assignee: Johnson Controls Technology Company
    Inventors: Michael R. Carlo, Dale A. Gospodarek
  • Patent number: 10317457
    Abstract: A method of inspecting the quality of an organic light-emitting diode (OLED) and an inspecting system for performing the method are disclosed. In one aspect, the method includes applying an input voltage to the OLED, measuring an OLED voltage across the OLED and an OLED current flowing through the OLED, estimating a parameter of the OLED based at least in part on the OLED voltage and the OLED current, and extracting a physical characteristic of the OLED based at least in part on the parameter.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: June 11, 2019
    Assignees: Samsung Display Co., Ltd., Korea University Research and Business Foundation
    Inventors: Jung-Jin Yang, Won-Jun Song, Mun-Chae Yoon, Gyu-Tae Kim, Tae-Woong Yoon
  • Patent number: 10293747
    Abstract: Method and apparatus are disclosed for detecting and mitigating vehicle battery gas emission into the vehicle cabin. An example vehicle includes a battery, a vent tube coupled to the battery for venting gas outside a vehicle cabin, a gas flow sensor for determining a measured flow rate at an end of the vent tube opposite the battery, and a processor. The processor is configured for determining an expected flow rate range based on a battery characteristic, and responsive to determining that the measured flow rate is outside the expected flow rate range, initiating a protective action.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: May 21, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeff Raymond Mohr, Hanyang B. Chen, Michael J. Irby, Gabriel Jim
  • Patent number: 10295604
    Abstract: Provided are a battery state-of-charge (SOC) estimation method and a battery management system which are capable of estimating an SOC using an inexpensive processor and a small-capacity memory. The SOC estimation method includes an SOC table creation step, an SOC calculation step, an SOC comparison step, and a processing step. The battery management system includes a battery, a sensing resistor, a control switch unit, and a processor.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 21, 2019
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Hyung Seog Oh, Ju Pyo Hong, Chun Sik Chung, Yong Goo Kim, Jae Wan Kim, Chol Ho Kim, Moon Young Kim, Jun Ho Kim, Jin Sik Park
  • Patent number: 10256488
    Abstract: A fuel cell system comprises: a fuel cell stack; a turbo compressor configured to supply a cathode gas to the fuel cell stack through a cathode gas supply line; a pressure regulation valve configured to regulate a pressure of the cathode gas; and a controller, wherein the controller is configured to calculate a target rotation speed of the turbo compressor and a target opening position of the pressure regulation valve, based on a target flow rate of the cathode gas and a target pressure of the cathode gas that are determined according to a required power output of the fuel cell stack and to control the turbo compressor and the pressure regulation valve using the calculated target rotation speed and the calculated target opening position, and the controller is configured, upon increase of the required power output, to: (a) determine an acceptable overshoot level of a flow rate of the cathode gas that is to be supplied to the fuel cell stack, the acceptable overshoot level being selected from a plurality of lev
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 9, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsuo Iio, Tomio Yamanaka, Kohei Oda, Naoki Sugiyama
  • Patent number: 10228425
    Abstract: A method of estimating battery state information includes collecting battery information; partitioning the collected battery information into interval information in a predetermined range; accumulating the interval information; and estimating the battery state information based on the accumulated interval information and learning information determined in advance. A method of learning battery state information includes collecting battery information; partitioning the collected battery information into interval information in a predetermined range; accumulating the interval information; and determining learning information based on the accumulated interval information and reference information of a battery, the learning information being used to estimate the battery state information.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: SangDo Park, Kaeweon You, Sun-Jae Lee
  • Patent number: 10196053
    Abstract: A method manages a state of charge of a traction battery of a rechargeable hybrid vehicle including a hybrid power train to provide propulsion. The battery being capable of operating according to a first operating mode over a state of charge range, of which an amplitude is bounded by predefined maximum and minimum state of charge values, in which the battery supplies substantially all power necessary for propulsion, and a second operating mode, in which the state of charge of the battery is kept substantially constantly around an equilibrium state of charge value. The method includes estimating an ageing state of the battery, comparing the estimated ageing state of the battery in relation to a given ageing state threshold, and reducing the amplitude of the state of charge range linked to the first operating mode when the ageing state of the battery rises above the given ageing state threshold.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: February 5, 2019
    Assignee: RENAULT s.a.s.
    Inventors: Bruno Delobel, Antoine Saint-Marcoux
  • Patent number: 10132907
    Abstract: A method for calibrating a current sensor which is configured to determine, in a vehicle's onboard power system, an electric operating current which flows through a measuring resistor, based on comparison of a voltage drop at the measuring resistor caused by the operating current and based on a rule which is dependent on the measuring resistor, including: determining an operating voltage drop brought about at the measuring resistor by the operating current; impressing a known electric calibration current into the measuring resistor, detecting an overall voltage drop brought about at the measuring resistor by the calibration current and the operating current, filtering the operating voltage drop from the overall voltage drop, such that a calibration voltage drop which is brought about by the calibration current remains, and calibrating the rule, dependent on the measuring resistor, based on the comparison of the calibration current and the calibration voltage drop.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 20, 2018
    Assignees: Continental Teves AG & Co. oHG, Continental Automotive GmbH
    Inventors: Martin Schramme, Wolfgang Jöckel
  • Patent number: 10124789
    Abstract: A current sensor fault detection system is disclosed which enables detection of a current sensor fault while the current sensor is operating and providing a current sensor output which is within a normal operating range. The current sensor is monitored by at least one controller which compares a change in battery state of charge error with a predetermined threshold. The change in battery state of charge error is a difference between a first change in battery state of charge calculated by integrating battery current with respect to a time and a second change in battery state of charge calculated based on the battery open circuit voltage during the time.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: November 13, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaoguang Chang, Xu Wang, Chuan He, Josephine S. Lee
  • Patent number: 10084324
    Abstract: Systems and methods for balancing battery cells of a battery pack are disclosed. In one example, a charge imbalance is determined while battery cells operate in a high charge resolution voltage range. The charge imbalance determined during operation in the high charge resolution voltage range may be removed when the battery cells are operated in a low charge resolution voltage range. The system and method may be particularly useful for balancing battery cells that operate in the low charge resolution voltage range for a large portion of their operating time.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: September 25, 2018
    Assignee: A123 Systems, LLC
    Inventors: Brian C. Moorhead, Brian D. Rutkowski
  • Patent number: 10074845
    Abstract: A connection unit of the present invention includes: a rail member extending in a direction where a plurality of storage elements is aligned; and a plurality of bus bar units each including an engagement portion movable along the rail member in the predetermined direction, and a bus bar fixed to electrode terminals of the storage elements adjacent to each other in the predetermined direction and connected to the engagement portion. The plurality of bus bar units engages with the rail member so as to be aligned in the predetermined direction, and the bus bar units adjacent to each other are provided so as to be movable independently along the predetermined direction. Entire assembly tolerance in the plurality of storage elements aligned in the predetermined direction can be absorbed (permitted) by adjusting distances between the independent bus bar units, thereby making it possible to easily assemble the plurality of bus bars.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: September 11, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hirotaka Watanabe
  • Patent number: 10039482
    Abstract: Aspects of the present disclosure include a sensor configured to store in memory indications of sensor use information and formulas or indications of formulas for determining the useful life of a sensor from the indications of sensor use information. A monitor connected to the sensor monitors sensor use and stores indications of the use on sensor memory. The monitor and/or sensor compute the useful life of the sensor from the indications of use and the formulas. When the useful life of the sensor is reached, an indication is given to replace the sensor.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 7, 2018
    Assignee: Masimo Corporation
    Inventors: Ammar Al-Ali, Walter M. Weber, Ryan Timothy McHale
  • Patent number: 10008883
    Abstract: Power feed device (100) supplies power to storage battery (152) mounted on vehicle (150), through power receiving unit (154) of vehicle (150). Power supply unit (104) performs preliminary supply to power receiving unit (154) while sequentially changing a frequency, and performs main supply with power larger than in the preliminary supply. Power supply-side controller (103) acquires frequency characteristics associated with power supply coil (104a), and specifies a resonance frequency based on the acquired frequency characteristics. Power supply-side controller (103) determines whether or not to supply power to power reception coil (154a) based on a frequency difference between resonance frequencies.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: June 26, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Osamu Ohashi, Tsuyoshi Nishio, Noriaki Asaoka, Masayoshi Koizumi
  • Patent number: 10003108
    Abstract: A problem to be solved is to realize a reduction of a difference in temperature between battery cells. Provided is a storage battery (10) including an electrical storage unit (20) including a battery cell group having a plurality of battery cells connected in series, a temperature difference detection unit (21) that detects a difference in temperature between the plurality of battery cells, and a charging and discharging control unit (22) that executes control processing of controlling at least one of charging to the electrical storage unit (20) and discharging from the electrical storage unit (20) so that the amount of current flowing in a battery cell having a relatively low temperature among the plurality of battery cells becomes greater than the amount of current flowing in a battery cell having a relatively high temperature among the plurality of battery cells.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: June 19, 2018
    Assignee: NEC Corporation
    Inventor: Hiroshi Kajitani
  • Patent number: 9972871
    Abstract: Disclosed herein is a voltage sensing member for sensing voltage of battery cells constituting a battery module, the voltage sensing member including a plurality of conductive sensing parts connected to electrode terminal connection parts of the battery cells of the battery module, each of the conductive sensing parts having a plate strip shape, a connector for transmitting the voltage sensed by the conductive sensing parts to a battery management system (BMS), and a plurality of wires for electrically connecting the conductive sensing parts to the connector, wherein the conductive sensing parts are coupled to the electrode terminal connection parts in a surface contact manner by welding.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: May 15, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Byung O Kong, Jun Yeob Seong, Dal Mo Kang, Young Sop Eom, Ki Youn Kim
  • Patent number: 9960452
    Abstract: A method of producing a nonaqueous secondary battery includes: preparing an electrode body (S10); constructing a battery assembly with the electrode body and a nonaqueous electrolyte (S20); initially charging the battery assembly (S30); aging the battery assembly at 40° C. or higher (S40); adjusting an SOC of the battery assembly (S60), wherein, the adjusting the SOC is performed such that a residual capacity percentage of the battery assembly is 11.5% or more and 14% or less; self-discharging the battery assembly and measuring a voltage drop amount (S70); and determining a quality of the battery assembly based on the voltage drop amount (S80).
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: May 1, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukiyoshi Ueno, Junko Ohira
  • Patent number: 9897659
    Abstract: Charge state estimation device includes: current/voltage acquiring unit for acquiring a charge/discharge current value and inter-terminal voltage value of secondary battery; combined current calculating unit for calculating a combined current value from the charge/discharge current value acquired at a time t; estimation time setting unit for setting, as an estimation time for charge state estimation, the time at which the combined current value exists within a predetermined threshold range; internal resistance estimating unit for estimating the internal resistance value of secondary battery on the basis of the inter-terminal voltage values and charge/discharge current values of secondary battery at the estimation time T and at sampling time before the estimation time; and charge state estimating unit for estimating the open circuit voltage value and charge state value of the secondary battery on the basis of the inter-terminal voltage value of secondary battery at the estimation time and the internal resistan
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: February 20, 2018
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventor: Yohei Ishii
  • Patent number: 9889760
    Abstract: A distributed energy management method and system 100 are disclosed for managing a charge rate of an array of EVSEs 140 that share a common power source. In the disclosed method and system, control of the power sharing is distributed at the individual EVSE level. For example, each EVSE includes a communication device 540 and a controller 530. The communication device is used to receive a signal relating to a present current capacity utilization of the shared circuit, such as an indication of availability or unavailability of current capacity on the shared circuit. The controller is configured to generate a variable update interval, and initiate adjustment of the charge rate of the EVSE according to the variable update interval based on the present current capacity utilization as indicated by the received signal.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: February 13, 2018
    Assignee: Schneider Electric USA, Inc.
    Inventors: Kevin M. Jefferies, Benjamin W. Edwards, Matthew L. White, Konstantin A. Filippenko, Richard K. Weiler
  • Patent number: 9886535
    Abstract: Systems and methods for making real-time predictions about an arc flash event on an electrical system are disclosed. An analytics server is communicatively connected to a data acquisition component. The analytics server comprises a virtual system modeling engine configured to create a virtual system model reflecting current network topology of the electrical system; an analytics engine configured to monitor predicted output data from the virtual system model and real-time output data from the electrical system acquired by the data acquisition component and update the virtual system model when a difference between the real-time output data and the predicted output data exceeds a threshold; and an arc flash simulation engine configured to forecast at least one aspect of and arc flash event based on the virtual system model.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: February 6, 2018
    Assignee: POWER ANALYTICS CORPORATION
    Inventors: Branislav Radibratovic, Kevin Meagher
  • Patent number: 9871275
    Abstract: A battery-state estimation device obtains, at a first timing, a first resistance value corresponding to a first open circuit voltage of a lithium-ion secondary battery and a second resistance value corresponding to a second open circuit voltage, which is higher than the first open circuit voltage, of the lithium-ion secondary battery. Further, the battery-state estimation device obtains, at a second timing which is different from the first timing, a third resistance value corresponding to the first open circuit voltage and a fourth resistance value corresponding to the second open circuit voltage. The battery-state estimation device determines presence or absence of lithium deposition in the lithium-ion secondary battery, based on a magnitude relation between a first variation amount of the third resistance value with respect to the first resistance value and a second variation amount of the fourth resistance value with respect to the second resistance value.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: January 16, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Tatsuya Ishibashi, Hiroshi Tenmyo
  • Patent number: 9863972
    Abstract: A physical quantity sensor includes: a sensor element which detects predetermined physical quantity; a driving circuit which generates a driving signal of the sensor element; and an AGC circuit which controls the driving signal at a constant level according to a reference voltage, based on an output signal of the sensor element, in which the reference voltage is variable.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: January 9, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Takehiko Shindo, Masahiro Oshio
  • Patent number: 9846200
    Abstract: After charging or discharging is stopped, a reference timing (t0) is set, and a first timing (t1) at which battery voltage (V) changes by a unit amount (N) with respect to the reference timing (t0), and a second timing (t2) at which the battery voltage changes by twice more than the unit amount with respect to the reference timing (t0) are select and set. The ratio of the time difference (t2?t1) between the first and the second timing to the time difference (t1?t0) between the reference and the first timing is found as a voltage change parameter (R) corresponding to the rate of change of the change speed of the voltage battery. An estimation device considers the change rate determined by the parameter is considered to be unchanged during an electrical current non-passage, and estimates a stable open circuit voltage at an object timing in future after the second timing.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: December 19, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Naoto Migita, Yohei Ishii, Akihiko Yamada
  • Patent number: 9846839
    Abstract: A system for utilizing a neural network to make real-time predictions about the health, reliability, and performance of a monitored system are disclosed. The system includes a data acquisition component, a power analytics server and a client terminal. The data acquisition component acquires real-time data output from the electrical system. The power analytics server is comprised of a virtual system modeling engine, an analytics engine, an adaptive prediction engine. The virtual system modeling engine generates predicted data output for the electrical system. The analytics engine monitors real-time data output and predicted data output of the electrical system. The adaptive prediction engine can be configured to forecast an aspect of the monitored system using a neural network algorithm.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: December 19, 2017
    Assignee: POWER ANALYTICS CORPORATION
    Inventors: Adib Nasle, Ali Nasle
  • Patent number: 9812743
    Abstract: Provided is a battery state monitoring circuit and a battery device capable of predicting a state of charge of a secondary battery with high accuracy. The battery state monitoring circuit includes a pseudo-equivalent circuit of the secondary battery, and causes a current flowing through a sense resistor to flow to the pseudo-equivalent circuit of the secondary battery, to thereby measure a pseudo-open circuit voltage of the secondary battery.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: November 7, 2017
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Toshiyuki Koike, Kazuaki Sano, Atsushi Sakurai, Hiroshi Mukainakano
  • Patent number: 9797960
    Abstract: A battery charge management method and device operable to perform that method. The battery charge management method comprises the steps of determining charge delivered to or from a battery based on Coulomb counting and updating an estimated battery state of charge based on the amount of delivered charge and measuring the battery current. Then comparing the updated estimated battery state of charge with a predetermined state of charge value of less than 100%, such that each predetermined state of charge value being associated with an expected battery current for that predetermined state of charge value. The method also includes modifying the updated estimated battery state of charge when the updated estimated state of charge is greater than the predetermined state of charge value and the measured battery current is greater than the expected battery current associated with the predetermined state of charge.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: October 24, 2017
    Assignee: PowerOasis Limited
    Inventors: Stephen Barrett, Peter William Dale Bishop, Graham Ronald Johnson
  • Patent number: 9759782
    Abstract: The invention relates to a method, The method comprises measuring a first battery voltage of a battery of a device at and a first charging current after terminating a constant current charging mode and before initiating a constant voltage charging mode, producing a charging impulse on the battery, measuring a second battery voltage and a second charging current, and determining an impedance of the battery on the basis of a voltage difference between the first and the second battery voltage and a difference between the first and the second charging current. The invention further relates to an apparatus and a computer program product that perform the method.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: September 12, 2017
    Assignee: Nokia Technologies OY
    Inventors: Markku Rajamaki, Jarno Rajala
  • Patent number: 9709607
    Abstract: The disclosed embodiments provide a system that facilitates the use of an electronic device. The electronic device may be a keyboard, a mouse, a trackpad, a remote control, a mobile phone, a wireless phone, a toy, a portable media player, a game controller, and/or a camera. During operation, the system monitors a state-of-charge of a battery used to power the electronic device. Next, the system calculates a charge threshold associated with a low-battery warning for the battery based on the monitored state-of-charge. If the state-of-charge of the battery reaches the charge threshold, the system generates the low-battery warning.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: July 18, 2017
    Assignee: Apple Inc.
    Inventors: Liquan Tan, Wing Kong Low, Alda Y. Luong
  • Patent number: 9658293
    Abstract: A power supply unit comprises a battery, current and voltage detecting portions, and a remaining capacity computing portion. The remaining capacity computing portion comprises a first computing portion computing a first open circuit terminal voltage based on current and voltage values from the current and voltage detecting portions, and computing a first remaining capacity based on the first open circuit terminal voltage, a second computing portion computing a second open circuit terminal voltage based on the current and voltage values, an ohmic resistance voltage drop and a polarization resistance voltage drop, and computing a second remaining capacity based on the second open circuit terminal voltage, a third computing portion calculating a third remaining capacity based on an integrated value by integrating the current, and a main computing portion computing a real remaining capacity of the battery based on the first and/or third remaining capacity, and the second remaining capacity.
    Type: Grant
    Filed: February 23, 2013
    Date of Patent: May 23, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Yuri Kimura, Kentaro Uemura, Daiki Hamada, Hiroya Murao
  • Patent number: 9634361
    Abstract: A method for determining the internal resistance of battery cells of battery modules of a battery includes measuring a first voltage of at least one battery cell of a first battery module at a first time. The first battery module is decoupled from the battery module string in response to a control signal. The first battery module is connected to the battery module string after the first voltage measurement to enable a change in the first voltage of the at least one battery cell in response to a current flowing through the first battery module. A second voltage is measured at a second time where the first battery module is connected to the battery module string for a predefined time interval. The internal resistance is determined with reference to a difference between the first and the second voltage and the current flowing through the first battery module.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: April 25, 2017
    Assignees: Robert Boasch GmbH, Samsung SDI Co., Ltd.
    Inventor: Holger Fink
  • Patent number: 9625529
    Abstract: A battery pack management system provides information such as remaining capacity and/or run time to empty for a battery. A time taken for a battery voltage to drop a threshold amount is measured and used to determine a remaining capacity of the battery. The time may be associated with a temperature and current of the battery. The remaining capacity of a battery is calculated by monitoring a discharge of the battery. For example, current drawn from the battery is monitored over a period of time and an initial amount by which the battery has been discharged is calculated. Compensation of this initial amount is carried out in order to take into account factors such as temperature, self-discharge rate and age of the battery.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: April 18, 2017
    Assignees: STMicroelectronics, Inc., STMicroelectronics International N.V.
    Inventors: K. R. Hariharasudhan, Frank J. Sigmund
  • Patent number: 9588144
    Abstract: An apparatus and method make use of a single shunt and two or more instrumentation amplifiers, switchably measuring voltages at the shunt. This permits current measurement. At times each instrumentation amplifier has its input shorted, which permits zeroing out many sources of offset in the signal path of that amplifier. Dynamic range is several orders of magnitude better than known current measurement approaches, permitting coulometry.
    Type: Grant
    Filed: April 25, 2015
    Date of Patent: March 7, 2017
    Assignee: Sendyne Corporation
    Inventor: Victor Marten
  • Patent number: 9575128
    Abstract: Adaptive estimation techniques to create a battery state estimator to estimate power capabilities of the battery pack in a vehicle. The estimator adaptively updates circuit model parameters used to calculate the voltage states of the ECM of a battery pack. The adaptive estimation techniques may also be used to calculate a solid-state diffusion voltage effects within the battery pack. The adaptive estimator is used to increase robustness of the calculation to sensor noise, modeling error, and battery pack degradation.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick Frost, Brian J. Koch, Damon R. Frisch, Brett B. Stawinski, Patricia M. Laskowsky, Kurt M. Johnson, Robert C. Baraszu
  • Patent number: 9566853
    Abstract: A vehicle includes a motor serving as a driving source for running the vehicle, and a high-power assembled battery and a high-capacity assembled battery each capable of supplying an electric power to the motor and placed in a luggage space. The high-power assembled battery is capable of charge and discharge with a current relatively larger than that in the high-capacity assembled battery. The high-capacity assembled battery has an energy capacity relatively larger than that of the high-power assembled battery and has a higher dependence of battery characteristic on temperature than that of the high-power assembled battery. The high-capacity assembled battery is placed over the high-power assembled battery in the vehicle.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: February 14, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tsuyoshi Hayashi, Kenji Kimura, Takurou Nakayama, Nobuyoshi Fujiwara, Akihiro Sato, Hirotaka Watanabe
  • Patent number: 9531200
    Abstract: The present invention relates to a battery conditioning apparatus for conditioning a battery. The apparatus includes a pulse generator circuit for generating pulses to be applied to the battery. A loading circuit is provided for loading the battery. The apparatus also includes a controller for controlling the pulse generator circuit and loading circuit to concurrently apply the pulses to and load the battery.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: December 27, 2016
    Assignee: MEGAPULSE AUSTRALIA PTY LTD
    Inventor: Rosario Naddei
  • Patent number: 9481260
    Abstract: An industrial vehicle includes a battery that includes battery cells including a battery liquid and connected in series, an battery liquid shortage detection unit detecting a shortage of the battery liquid by detecting a voltage value between the battery cells, an battery liquid-shortage time calculation unit calculating a battery liquid-shortage time, which is a cumulative time of the shortage of the electrolyte detected by the battery liquid shortage detection unit, a memory storing the battery liquid-shortage time calculated by the battery liquid-shortage time calculation unit, and a communication controller attaching time information to the battery liquid-shortage time stored in the memory and outputting the battery liquid-shortage time with the time information to a management server, at a predetermined timing.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: November 1, 2016
    Assignee: Komatsu Ltd.
    Inventor: Feng Hua
  • Patent number: 9461379
    Abstract: A charger and a method for charging a battery pack having a plurality of battery cells is presented. The method includes measuring the voltage of the battery cell(s), comparing the voltage measurement(s) of the cell(s) to a target charge voltage value and if the voltage measurement(s) of the cell(s) is not greater than or equal to the target charge voltage value than setting a current for the battery pack based on the voltage measurement(s) of the cell(s).
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: October 4, 2016
    Assignee: Black & Decker Inc.
    Inventors: Regina G. C. Cunanan, Brian K. Wohltmann, Dustin Lee
  • Patent number: 9459328
    Abstract: An apparatus for simulating a battery is provided. The apparatus includes a power supplying unit, a state regulating unit and an impedance unit. The power supplying unit is coupled to a power terminal of a battery interface and determines whether to provide an operation voltage to the power terminal according to a device voltage provided by the power terminal. The state regulating unit is coupled to the power terminal to provide a impedance regulating signal. The impedance unit is coupled between the power terminal and a ground voltage and is coupled to the state regulating unit to receive the impedance regulating signal. The impedance unit regulates an impedance thereof according to the impedance regulating signal.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 4, 2016
    Assignee: COMPAL ELECTRONICS, INC.
    Inventor: Chih-Yang Lin
  • Patent number: 9461308
    Abstract: An electrode for a lithium ion secondary battery includes an electrode active material and a water-soluble polymer. The water-soluble polymer is a copolymer containing 1% by weight to 30% by weight of an aromatic vinyl monomer unit, 20% by weight to 60% by weight of an unsaturated carboxylic acid monomer unit, and 0.1% by weight to 5% by weight of a crosslinkable monomer unit.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: October 4, 2016
    Assignee: ZEON CORPORATION
    Inventor: Tomokazu Sasaki
  • Patent number: 9448287
    Abstract: A battery monitoring device for real-time measurement and monitoring of a battery module driving an actual load and having a plurality battery cells connected together in series, has a plurality of power and impedance calculators provided for the respective battery cells, and configured to receive voltage signals and current signals from the battery cells, respectively and to measure instantaneous power values and internal impedance characteristics of the battery cells, respectively, and a battery module state manager configured to receive output data of the power and impedance calculators via an internal bus.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: September 20, 2016
    Assignee: YOKOGAWA ELECTRIC CORPORATION
    Inventors: Syuhei Okada, Satoshi Yoshitake
  • Patent number: 9428072
    Abstract: A method for extending the life cycle of a battery includes receiving a storage mode status signal at a battery controller and incrementally adjusting a state of charge window over a period of time in response to receiving the storage mode status signal.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 30, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaoguang Chang, Josephine S. Lee, Xu Wang, Chuan He
  • Patent number: 9411398
    Abstract: An electronic apparatus is provided that includes a processor, a voltage regulator, a battery controller and an embedded controller. The voltage regulator to receive an input voltage and to provide an output voltage to the processor. The battery controller to store electronic device information and to receive battery information related to a current battery power. The embedded controller to receive the electronic device information and the battery information from the battery controller, and the embedded controller to provide power information to the processor based on the received information.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: August 9, 2016
    Assignee: INTEL CORPORATION
    Inventors: Gang Ji, Alexander B. Uan-Zo-Li, Jorge P. Rodriguez, Andy Keates, Vasudevan Srinivasan
  • Patent number: 9360531
    Abstract: Embodiments of the present invention provide an accelerated lifetime estimation device for predicting the lifetime of a secondary battery, and a method thereof. The accelerated lifetime estimation device can accurately estimate a normal lifetime of the secondary battery while reducing an evaluation time period of the secondary battery.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: June 7, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seung Bum Suh, Heekwan Chai, Jeongsoon Shin, Younghwa Ko, Bounggun Joung, Kwangki Baeg, Cheol Ho Park, Yongsic Kim, Wonseok Kim, Hoyul Baek, Jang-Woo Lee, Jake Kim, Jongman Kim, Su Dong Lee, Seung Ho Yang, Inho Jung, Joo Han Song, Kyeong-Beom Cheong
  • Patent number: 9318731
    Abstract: A battery pack includes a first battery module, the first battery module including unit batteries, a first plate, and a second plate, and a second battery module, the second battery module including unit batteries, a first plate, and a second plate. The first battery module may be stacked on the second battery module, the second plate of the first battery module may be between the first battery module and the second battery module, and the second plate of the first battery module may support the unit batteries of the first battery module and contact the first plate of the second battery module.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: April 19, 2016
    Assignees: SAMSUNG SDI CO., LTD., ROBERT BOSCH GmbH
    Inventors: Hyun-Ye Lee, Tae-Young Kim, Myung-Chul Kim, Shi-Dong Park