With Peak Detection Of Current Or Voltage (e.g., Delta-v Or Delta-i Utilized, Etc.) Patents (Class 320/148)
  • Patent number: 10320207
    Abstract: A battery management system (BMS) connected to a battery is disclosed. The battery management system includes a battery status component configured to detect one or more parameters of the battery; a timer component configured to compute an amount of time needed to recharge the battery based on one or more of the parameters of the battery; and a scheme initiation component configured to determine an optimal time to begin charging based on the amount of time needed to recharge the battery.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: June 11, 2019
    Assignee: FARADAY & FUTURE INC.
    Inventors: Phillip John Weicker, Omourtag Alexandrov Velev, Anil Paryani
  • Patent number: 10276898
    Abstract: A pack for containing and recharging an e-cigarette includes: a re-chargeable pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a second connector which is electrically connectable to an e-cigarette contained within the pack; and a second recharging mechanism for re-charging the e-cigarette when the e-cigarette is electrically connected to the second connector. The first recharging mechanism includes a first protection circuit module and the second re-charging mechanism includes a second protection circuit module, wherein the protection modules protect the pack and e-cigarette against excessive voltage or current during re-charging.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: April 30, 2019
    Assignee: Nicoventures Holdings Limited
    Inventor: David Leadley
  • Patent number: 10110053
    Abstract: A unique method for charging a battery includes comparing a parameter to a limit, wherein the parameter relates to previous charging of the battery; determining a current state of the battery; and performing a next charging cycle based on the comparison and/or the current state of the battery. A unique system includes a vehicle, a battery, and a charging system for charging the battery. The charging system includes a controller for determining whether the battery is in short term storage or long term storage; starting a new charge cycle after a first amount of reduction in the charge of the battery if the battery is in short term storage; and starting the new charge cycle after a second amount of reduction in the charge of the battery if the battery is in long term storage.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: October 23, 2018
    Assignee: Club Car LLC
    Inventors: Matthew S Brackx, Paul W McLeod, Robert H Edwards, Russell William King
  • Patent number: 10067197
    Abstract: Systems and methods for assessing voltage threshold detection circuitry of individual battery cells within a battery pack supplying power to a vehicle are disclosed. One example system comprises, a plurality of battery cells within a battery pack, a plurality of voltage threshold detecting circuits detecting voltage of the plurality of battery cells, a voltage of a first battery cell of the plurality of battery cells coupled to a first voltage threshold detecting circuit of the plurality of voltage threshold detecting circuits, and a network that selectively couples a second battery cell to the first voltage detecting circuit while the first battery cell is coupled to the first voltage detecting circuit.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: September 4, 2018
    Assignee: A123 Systems LLC
    Inventors: Paul W. Firehammer, John H. Floros
  • Patent number: 10033219
    Abstract: The present disclosure relates to an energy supply device for providing an output voltage and an output current. The device includes a first operating state, a second operating state, a measuring assembly, and a signal generator. The measuring assembly is configured to sense a current amplitude of the output current of the energy supply device. The signal generator is configured to produce the output voltage and the output current. The signal generator is further configured to reduce a voltage amplitude of the output voltage of the energy supply device in the first operating state to change to the second operating state if the sensed current amplitude falls below a first current threshold value and to increase a voltage amplitude of the output voltage of the energy supply device in the second operating to change to the first operating state if the sensed current amplitude exceeds a second current threshold value.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 24, 2018
    Assignee: Phoenix Contact GmbH Co. KG
    Inventors: Jochen Zeuch, Hartmut Henkel
  • Patent number: 9985697
    Abstract: A circuit device includes a driver that performs drive control of a resonant circuit and a signal output unit having an input node NAIN to which a resonance signal (AIN) from the resonant circuit is input, an output node NAOUT that outputs an output signal (AOUT) that is based on the resonance signal and a switch element that is provided between the input node NAIN and the output node NAOUT, the driver controlling at least one of a first drive current in an ON period of the switch element and a second drive current in an OFF period of the switch element.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: May 29, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Norikazu Tsukahara
  • Patent number: 9966770
    Abstract: A charging apparatus includes a power conversion circuit for charging a battery, and a charging control circuit. The battery has a battery net voltage. The charging control circuit includes a conversion control circuit, a sensing circuit and a determining circuit. The conversion control circuit controls the power conversion circuit to generate plural pairs of DC output voltage levels and DC output current levels, wherein each DC output voltage level and its corresponding DC output current level are a voltage-current pair. The sensing circuit senses the DC output voltage levels and/or the DC output current levels. The determining circuit determines the battery net voltage according to plural voltage-current pairs.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: May 8, 2018
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Wei-Hsu Chang, Ta-Yung Yang, Pei Yu Chiang
  • Patent number: 9893396
    Abstract: A process for conditioning an electrochemical cell system comprising at least two electrochemical cells comprises selecting from the fuel electrodes of the electrochemical cells groups comprising: a charged group and a reset group. The process also comprises holding the fuel electrodes within the charged group at a predetermined state of charge associated with a set concentration of metal fuel ions in solution in the ionically conductive medium. The process further comprises resetting the fuel electrodes within the reset group. An electrochemical cell system includes a plurality of fuel electrodes and one or more controllers configured to regulate the concentration of reducible metal fuel ions in solution with an ionically conductive medium by maintaining a predetermined state of charge of at least one of the fuel electrodes, and initiate a charging, discharging, or resetting process on at least one other fuel electrode. Other features and embodiments are also disclosed.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: February 13, 2018
    Assignee: FLUIDIC INC.
    Inventors: Todd Trimble, Sergey Puzhaev, Joel Hayes, Ramkumar Krishnan, Cody A. Friesen
  • Patent number: 9829942
    Abstract: A power supply apparatus includes a wireless power supply unit that wirelessly supplies power to an electronic device, a wireless communication unit that wirelessly communicates with the electronic device, a detection unit that detects a change of a position of the electronic device, and a control unit that controls, based on a result detected by the detection unit, a frequency of a communication between the wireless communication unit and the electronic device.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: November 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsuya Nakano
  • Patent number: 9634509
    Abstract: A method and an apparatus for rapid charging in an electronic device are provided. In a method for charging a battery of an electronic device, an operation environment of the electronic device is determined. A charging current corresponding to the operation environment of the electronic device is set. Battery charging is started using the set charging current. The battery is charged using a maximum allowed charging current, such that a battery charging time may be reduced.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 25, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Chul-Eun Yun, Ki-Sun Lee, Chul-Woo Park, Ku-Chul Jung, Young-Hee Ha
  • Patent number: 9501050
    Abstract: A battery powered thermostat senses a battery voltage drop to a low-battery voltage level. At that point, the thermostat microprocessor provides a LOW BATTERY alert message, visible on the thermostat display. If the occupant fails to replace the power cells or does not notice the LOW BATTERY message, when the battery voltage drops further the microprocessor alters the thermostat set points. This reduces the number of heating or cooling cycles per day, and reduces the number of actuations of the latching relays in the thermostat, conserving remaining battery life. At a further drop in battery voltage the set points are changed additionally. Additional functions, such as second level heat, second level cooling, and fan speed, are disabled. The change in heat or cooling cycles induces the occupant to check the thermostat where he or she will notice the LOW BATTERY message.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: November 22, 2016
    Assignee: International Controls and Measurements Corp.
    Inventors: Weidong Pan, Michael P Muench, Andrew S Kadah, Eric Christopher Wood
  • Patent number: 9365121
    Abstract: A method and system for controlling charge and discharge of a battery are provided. The method includes detecting a battery temperature using a temperature sensor and determining, by a controller, a state of charge (SOC) of the battery, a first maximum discharging power value, and a first maximum charging power value that correspond to the battery temperature. The controller selects a lowest SOC from among at least one SOC to use a maximum discharging power equal to the determined first maximum discharging power value and resets the first maximum charging power value to a second maximum charging power value that corresponds to the selected lowest SOC. Further, the controller is configured to perform a charge and a discharge of the battery with the reset second maximum charging power value at the detected battery temperature.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: June 14, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jinwook Kim, Suk Hyung Kim
  • Patent number: 9331582
    Abstract: A power converter (such as a battery charger) includes a cable configured to deliver a source voltage and current to a load, where the cable is anticipated to drop some voltage as the load current increases. The power converter also includes a regulator having a feedback-adjusting transistor configured to gradually compensate for the dropped cable voltage as the load current increases. The transistor has a gate capacitance and a resistance forming an integrator configured to filter a volt-second product of an output waveshape of the converter to derive an average voltage correlated to the load current as the load current increases. The regulator is configured to increase a gate voltage of the transistor through a threshold region of the transistor and gradually turn the transistor on. The transistor is configured to apply an adjusting resistance coupled to a feedback sensing node of the regulator to increase the source voltage to compensate for the cable voltage drop and improve the load voltage regulation.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 3, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Ulrich B. Goerke
  • Patent number: 9293934
    Abstract: Embodiments of the present invention provide a battery charging method, related to the field of electronic technologies and invented to shorten the charging time. The method includes: determining, by a mobile terminal, a specification parameter of a battery to be charged; determining, by the mobile terminal, a charging parameter corresponding to the specification parameter according to the determined specification parameter; and charging, by the mobile terminal, the battery to be charged according to the determined charging parameter. Embodiments of the present invention also provide a corresponding mobile terminal. The present invention is applicable to charging of a mobile terminal.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: March 22, 2016
    Assignee: Huawei Device Co., Ltd.
    Inventor: Shunhai Xu
  • Patent number: 9287727
    Abstract: Systems and methods comprise setting a digital-to-analog converter of a charger to a set voltage. The set voltage is a maximum voltage allowable for a battery type. An output voltage of the charger is determined when the charger is operating at the set voltage. An offset voltage is determined by comparing the output voltage to the set voltage. A cutoff voltage of a battery is determined using the offset voltage and the open circuit voltage. Charger voltage is adaptively adjusted in response to the cutoff voltage, and the adjusting prevents an over potential to the battery.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: March 15, 2016
    Assignee: iControl Networks, Inc.
    Inventors: Ken Egan, Jim Kitchen
  • Patent number: 9276419
    Abstract: The present invention refers to a robot, a docking system and a docking method therefor. The docking system comprises a first circuit located in a robot. The first circuit comprises a power storage unit for supplying power to the robot and a first main control unit for controlling the movement of the robot. The docking system further comprises a first group of terminals electrically connected with the first circuit, and a second circuit located in a docking station. The second circuit comprises a power supplying unit. The docking system further comprises a second group of terminals electrically connected with the second circuit. The power storage unit or the power supplying unit provides a detection power. The detection power generates a detection current when it flows across a detection circuit. The detection circuit is constructed by the first circuit and the second circuit through the first group of terminals docking with the second group of terminals.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: March 1, 2016
    Assignee: Positec Power Tools (Suzhou) Co., Ltd.
    Inventors: Gianni Borinato, Jiaofeng Tian
  • Patent number: 9248838
    Abstract: A method and a system for making a one-time change to a primary departure schedule of a battery-electric vehicle for charging or pre-climate operations without affecting the future departure times of the primary departure schedule. The system can be a vehicle including an ECU, a memory, a battery, a charger connected to an external power source, a BMS, an HVAC and a display. The method may include receiving an alternate departure date and time different from the primary departure schedule, deactivating the charging or pre-climate operations based on the primary departure schedule and activating charging or pre-climate operations based on the alternate departure date and time. The method and system may also include receiving an immediate charge mode designation, deactivating the charging or pre-climate operations based on the primary schedule and immediately activating the charging operations without affecting the primary departure schedule.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: February 2, 2016
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Hidetoshi Kusumi, Hisanori Ito
  • Patent number: 9184601
    Abstract: According to an embodiment, a charge-discharge control device includes a receiving unit, a selecting unit, and a group controller. The receiving unit receives feasibility information. The selecting unit selects, of electric power devices that send the feasibility information indicating disallowance of simultaneously belonging to a plurality of charging groups, one electric power device as a representative device of the charging group to which belongs that electric power device; and selects, of electric power devices that send the feasibility information indicating disallowance of simultaneously belonging to a plurality of discharging groups, one electric power device as a representative device of the discharging group to which belongs that electric power device. Via the selected representative device, the group controller controls the other electric power devices belonging to the charging group or the discharging group to which belongs the selected representative device.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: November 10, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Nishibayashi, Keiichi Teramoto, Kotaro Ise, Yasuyuki Tanaka
  • Patent number: 9054396
    Abstract: The present invention provides a quick charge method belonging to the field of the battery and particularly relates to a quick charge method for lithium ion battery and polymer lithium ion battery.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: June 9, 2015
    Assignee: GUANGZHOU FULLRIVER BATTERY NEW TECHNOLOGY CO., LTD
    Inventors: Dingbo Cheng, Shengcheng Tang, Shihua Zeng
  • Patent number: 9035618
    Abstract: A battery pack, and a method of controlling the battery pack are disclosed. The battery pack detects consumption current when a load is not turned on, and shuts off power when a load is turned off or in stand-by mode, thereby preventing consumption current of the load from flowing.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: May 19, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Myung-Jun Lee
  • Patent number: 8994323
    Abstract: A charging circuit includes a power path control unit which switches a first switch connected between a system connection terminal and a battery connection terminal on while not charging, and switches the first switch on and a second switch connected between an external power supply input terminal and the system connection terminal on while charging so as to supply power to a system and charge a battery. A voltage difference between the external power supply input terminal and the battery connection terminal is detected, a current flowing between the external power supply input terminal and the system connection terminal is detected, and it is determined that an external power supply is disconnected based on the detection results of the voltage differences and the current.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Junji Nishida
  • Patent number: 8988045
    Abstract: The method for charging or discharging a battery comprises measurement of the voltage at the terminals of the battery and comparison of the measured voltage with an end of charging or discharging voltage threshold. The method also comprises measurement of a temperature representative of the temperature of the battery and measurement of the current flowing in the battery to form a pair of measurements. The voltage threshold is then determined according to the pair of measurements. Charging or discharging of the battery is stopped when the voltage threshold is reached.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: March 24, 2015
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Jean-Marie Klein, Arnaud Delaille, Sylvie Genies
  • Patent number: 8952650
    Abstract: A charging control method of a master device receiving an operating power from an auxiliary battery device or an internal battery, the auxiliary battery device including a battery having a first power supply and a first power supply output port for outputting the first power supply, is provided. The method includes converting a second power supply to the first power supply upon detecting the second power supply at an input port of the master device in order to provide the converted first power supply as an operating power of the master device and/or a charging power of the internal battery, and detecting a connection with the auxiliary battery device upon detecting the first power supply at the input port in order to provide the first power supply as the operating power of the master device and/or the charging power of the internal battery without voltage drop.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyangbok Lee
  • Patent number: 8912761
    Abstract: A PM-ECU executes a program including: a step (S104) of estimating pre-charge SOC(1) when a plug-in charge is started (YES in S100), a step (S108) of calculating an integrated value of charging current when integration permitting conditions are satisfied (YES in S104, YES in S106), a step (S112) of setting a final integrated value when the charge is completed, a step (S116) of estimating post-charge SOC(2) when an ignition switch is turned on (YES in S114), a step (S122) of calculating a full-charge capacity of this cycle when calculation conditions are satisfied (YES in S120), a step (S128) of calculating a new full-charge capacity when the full-charge capacity of this cycle is within a specified range (YES in S124), and a step (S130) of updating the full-charge capacity by setting the new full-charge capacity as the current full-charge capacity when the new full-charge capacity is within a specified range (YES in S128).
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Junta Izumi
  • Publication number: 20140354241
    Abstract: Systems and methods are provided for charging a battery. The system, for example, includes, but is not limited to a first interface configured to receive a voltage from an AC voltage source, a matrix conversion module comprising a plurality of switches electrically connected to the first interface and configured to provide a charging voltage to the battery, and a controller communicatively connected to the matrix conversion module, wherein the controller is configured to: determine a voltage of the battery, determine an angle of the AC voltage source to initiate charging of the battery based upon the voltage of the battery, and control the plurality of switches to provide the charging voltage to the battery between the determined angle of the AC voltage source and a subsequent zero-crossing of the AC voltage source.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Inventors: MILUN PERISIC, RAY M. RANSONM, LATEEF A. KOJOUKE
  • Patent number: 8896272
    Abstract: Embodiments of the present invention include electronic circuits, systems, and methods for charging a battery. In one embodiment, the present invention includes a method, which may be implemented by an integrated circuit, comprising charging the battery using a constant current until the voltage on the battery increases to a first voltage level, and charging the battery using a constant voltage, wherein the constant voltage is set to a second voltage level. The constant current charging transitions to constant voltage charging when the voltage on the battery reaches the first voltage level, where the first voltage level is greater than the second voltage level.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: November 25, 2014
    Assignee: QUALCOMM, Incorporated
    Inventors: Shadi Hawawini, M. Abid Hussain
  • Patent number: 8884587
    Abstract: An automated power reporting system is provided in one aspect. The system includes one or more devices that can report or transmit power status information over a bus or network. A protocol component utilizes a generalized protocol to process or convert the power status information over the network in order to facilitate power management operations for a plurality of devices. In this manner, devices that send power information can interact and exploit personal computing resources in order to better help users manage limited power resources for their respective devices.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: November 11, 2014
    Assignee: Microsoft Corporation
    Inventors: Firdosh K. Bhesania, Randall Aull
  • Publication number: 20140217992
    Abstract: This invention, in some variations, provides a separator for a lithium-sulfur battery, comprising a porous substrate that is permeable to lithium ions; and a lithium-ion-conducting metal oxide layer on the substrate, wherein the metal oxide layer includes deposits of sulfur that are intentionally introduced prior to battery operation. The deposits of sulfur may be derived from treatment of the metal oxide layer with one or more sulfur-containing precursors (e.g., lithium polysulfides) prior to operation of the lithium-sulfur battery. Other variations provide a method of charging a lithium-sulfur battery that includes the disclosed separator, the charging being accomplished by continuously applying a substantially constant voltage to the lithium-sulfur battery until the battery charging current is at or below a selected current.
    Type: Application
    Filed: February 5, 2013
    Publication date: August 7, 2014
    Applicant: HRL Laboratories, LLC
    Inventors: Wen LI, Ping LIU, Jocelyn HICKS-GARNER
  • Patent number: 8796996
    Abstract: A charge control circuit includes a charge control unit that controls an operation of a charging unit that charges a rechargeable battery; and a voltage detection unit that detects a terminal voltage of the rechargeable battery, wherein when a terminal voltage of the rechargeable battery as detected by the voltage detection unit is lower than a predetermined first threshold-value voltage, being lower than a full-charge voltage which is a terminal voltage of the rechargeable battery in full charge, the charge control unit causes a constant current charging to the rechargeable battery by requesting the charging unit to supply a charging current of a predetermined first current value, causing the charging unit to supply a charging current of the first current value to the rechargeable battery, when the terminal voltage of the rechargeable battery as detected by the voltage detection unit exceeds the first threshold-value voltage but is less than the full charge voltage, the charge control unit causes the constan
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: August 5, 2014
    Assignee: Panasonic Corporation
    Inventors: Toshiyuki Nakatsuji, Tsuyoshi Morimoto
  • Patent number: 8779727
    Abstract: A charge control device includes a charge control circuit to control a charge of a secondary battery by controlling an output stage connected between a power supply and the secondary battery. The charge control circuit includes a first error amplifier to generate a first error voltage in response to a difference between a predetermined first reference voltage and a first feedback voltage. The value of the first feedback voltage is determined in accordance with a primary current supplied from the power supply to the output stage. The charge control circuit also includes a second error amplifier to generate a second error voltage in response to a difference between either one of a predetermined second reference voltage and the first error voltage, and a second feedback voltage. The value of the second feedback voltage is determined in accordance with a charge current supplied from the output stage to the secondary battery.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: July 15, 2014
    Assignee: Rohm Co., Ltd.
    Inventor: Tadashi Akaho
  • Patent number: 8773078
    Abstract: A USB charging system and the method thereof are disclosed. The USB charging system includes a hub device having a charging function module and a plurality of connection ports. The charging function module dynamically distributes the charging current to the connection ports based on power supply ability of a power unit for providing the charging current to at least one chargeable device wherein the charging current is greater than USB protocol current.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: July 8, 2014
    Assignee: Genesys Logic, Inc.
    Inventors: Shun-te Yu, Wen-ming Huang, Kuang-hsien Hsu, Chieh-shiung Chang
  • Publication number: 20140159669
    Abstract: A system is provided to allow for charging of a chemical storage device without a rectifier. A gate is used in conjunction with a gate controller. The gate controller monitors input voltage and opens the gate when voltage crosses a zero crossing in a first direction. The gate monitor then closes the gate when the voltage crosses a zero crossing in a second direction. This increases the chances that the output power will have voltage in a single direction. This output power is then fed to a chemical storage device, where it can be stored and used by one or more electronic devices.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: Keme, Inc.
    Inventors: Jeffrey Rose, Jennifer Fraser
  • Patent number: 8742725
    Abstract: Provided is a secondary battery system which can accurately detect a state of a secondary battery system (such as a secondary battery state and a secondary battery system failure). The secondary battery system (6) includes dV/dQ calculation means which calculates a dV/dQ value as a ratio of a change amount dV of a battery voltage V of a secondary battery (100) against a change amount dQ of an accumulation amount Q when the accumulation amount Q of the secondary battery (100) is changed. The secondary battery system (6) detects the state of the secondary battery system (6) by using the dV/dQ value.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: June 3, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Tsujiko, Tomitaro Hara, Takuichi Arai, Tsuyoshi Yano, Daisuke Teramoto, Keiko Wasada, Sachie Yuasa
  • Publication number: 20140125133
    Abstract: Systems and methods provide LED-based emergency lighting utilizing AC-DC switch mode power conversion technology, NiMH battery technology, and emergency lighting lamps that use high power white LEDs as the emergency lighting source. A low voltage microprocessor based circuit design reduces the battery input voltage for the unit to a nominal level of 2.4VDC. The microprocessor executes a pulse charging algorithm to lower battery maintenance mode power consumption levels and extend the useful life of the battery. Brownout detection technology does not require the determination of the AC input voltage level or transmission of the brownout detection signal to the secondary side of the circuit. A rechargeable battery is charged by a charge current selectively set to a bulk charge value, a trickle charge high value, or a trickle charge low value based on sampling of the voltage of the rechargeable battery and the charge current.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Inventors: Lei Han, John Evan Lane
  • Patent number: 8687334
    Abstract: A controller 43 turns on a semiconductor switch 41 in a normal mode, and turns off the semiconductor switch 41 in a sleep mode. A bypass resistor 5 is connected in parallel to the semiconductor switch 41. A resistance value of the bypass resister 5 is so large as that in the sleep mode, a dark current is supplied to an electronic device 3 via the bypass resistor 5, and if an electric wire downstream of the bypass resistor is short-circuited, an electric current more than a permissive current is prevented from flowing to the electric wire.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: April 1, 2014
    Assignee: Yazaki Corporation
    Inventors: Keisuke Ueta, Akinori Maruyama, Yoshihide Nakamura, Yoshinori Ikuta, Hideo Suganuma
  • Patent number: 8664960
    Abstract: When a battery current is not larger than a limit current set depending on the battery temperature and is flowing continuously for a predetermined time set depending on the battery temperature or longer, a decision is made that a secondary battery is in stable state. When the secondary battery is in stabilized state, the battery voltage is considered to be equal to the open circuit voltage and SOC estimation is performed based on the open circuit voltage-SOC characteristics. When the product of the internal resistance of the secondary battery and the limit current is made substantially constant (constant voltage) by setting the limit current in association with temperature dependence of the internal resistance, estimation error can be kept within a predetermined range in the stabilized state even if SOC estimation is performed while the battery voltage is assumed as the open circuit voltage.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 4, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Tsuchiya
  • Publication number: 20140021913
    Abstract: In at least one embodiment, a vehicle includes a battery and an inductive charge plate electrically connected with the battery. The vehicle further includes at least one controller configured to, in response to detecting an authenticated charge system, cause an initiation signal to be transmitted such that the charge system initiates charging of the battery via the charge plate and cause an association signal to be intermittently or continuously transmitted such that charging of the battery via the charge plate is maintained.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Douglas Raymond Martin, William David Treharne
  • Patent number: 8598849
    Abstract: Some embodiments provide a system that monitors a battery in a portable electronic device. During operation, the system applies a pulse load to the battery and determines an impedance of the battery by measuring a voltage of the battery during the pulse load. Next, the system assesses a health of the battery based on the impedance. Finally, the system uses the assessed health to manage use of the battery in the portable electronic device.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: December 3, 2013
    Assignee: Apple Inc.
    Inventors: Ramesh C. Bhardwaj, Taisup Hwang, Richard M. Mank
  • Patent number: 8598850
    Abstract: Embodiments of the present invention generally comprise devices and methods for optimizing rechargeable battery life. One or more embodiments of the invention comprise a device for interrupting the charging status of a rechargeable battery, comprising: a plug, an outlet, a switch, and a controller for controlling the switch state dependent on at least one of: amount of time the switch is in the open state, and amount of time the switch is in the closed state.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: December 3, 2013
    Assignee: Perumala Corporation
    Inventor: Madhavan Pisharodi
  • Patent number: 8581547
    Abstract: A system for charging a battery includes a battery pack having at least two lithium ion cells. A controller detects a rate of change of voltage with respect to a state of charge (dV/dSOC) of the battery pack based on a calculated dV/dSOC that represents the battery pack as a whole, without calculating dV/dSOC individually on a cell-by-cell basis. Charging is terminated when dV/dSOC reaches a predetermined value.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: November 12, 2013
    Assignee: A123 Systems LLC
    Inventor: C. Michael Hoff
  • Patent number: 8558512
    Abstract: An electrical generator has an engine that provides a mechanical output that is converted to electrical current by an alternator. The engine is started by a battery-powered motor starter. The battery is charged during running of the electrical generator by a portion of the electrical current output by the alternator. The battery is charged according to a charging profile based on the temperature of the battery at start up of the electrical generator.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 15, 2013
    Assignee: Generac Power Systems, Inc.
    Inventors: Robert Iles, Alan Dietrich, Steven Wilcox, Greg Wischstadt, David Thimmesch
  • Patent number: 8552679
    Abstract: A method is described wherein DC power is converted into battery charging power by means of an inductor carrying a current which is controlled by a power controller during an adjustable part of a pulse width period. The pulse width period is made adjustable in order to influence the power consumption of the controller which consumes a substantial amount of the total power consumed for controlled DC-DC conversion. Several additional features are provided to improve the efficiency and to further reduce the power consumed by both the converter and the power controller, which provides new uses for a variety of products and appliances having solar cells, such as road studs.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 8, 2013
    Assignee: Intivation Holding B.V.
    Inventors: Anne Jurjen Osinga, Menno Kardolus, Jan Wanner, Jacobus Harmen Schijffelen
  • Patent number: 8502541
    Abstract: A method of evaluating battery packs is described. The method includes measuring a cell open voltage for each battery cell group in a section of battery cells; measuring a voltage under charge, or a voltage under load, or both, at a predetermined time interval for each battery cell group in the section of battery cells; determining the magnitude of the difference between the open cell voltage and the voltage under charge, or the voltage under load, or both, for each battery cell group in the section of battery cells by subtracting the voltage under charge from the cell open voltage, or subtracting the voltage under load from the cell open voltage, or both; and determining if the magnitude of the difference between the open cell voltage and the voltage under charge, or the voltage under load, or both, for each battery cell group in the section of battery cells exceeds a predetermined level.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: August 6, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Robert W. Chalfant, Jason A. Lupienski, John D. Tompkins
  • Patent number: 8502503
    Abstract: A circuit includes multiple battery modules and protection circuits respectively coupled to the battery modules. Each protection circuit includes a controller and a shunt circuit. The controller is coupled to one of the battery modules and detects a fault associated with the battery module. The shunt circuit is coupled to the battery module and the controller, and shunts a current around the battery module if the fault associated with the battery module is detected by the controller.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: August 6, 2013
    Assignee: O2Micro Inc.
    Inventor: William Densham
  • Patent number: 8482262
    Abstract: A storage battery system includes a battery module including nonaqueous electrolyte secondary batteries. The storage battery system further includes a temperature sensor which measures a temperature of the battery module, a voltmeter which measures a voltage of each of the nonaqueous electrolyte secondary batteries and a charge control unit which controls a maximum end-of-charge voltage V1 (V) of the nonaqueous electrolyte secondary batteries to fall within the range defined in formula (1) given below when the temperature of the battery module is not lower than 45° C. and is not higher than 90° C.: 0.85×V0?V1?0.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: July 9, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi, Yuji Sato
  • Patent number: 8471528
    Abstract: To provide a secondary battery controlling apparatus and a controlling method that can keep a storage amount of a secondary battery used for supply and demand control of a power system not close to 100% or 0%. The present invention is a power supply and demand controlling apparatus of a small-scaled power system 1 including distributed power supplies 31, 32, . . .
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: June 25, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Koji Toba, Mari Tanaka, Takenori Kobayashi, Yoshihiro Ogita, Akinori Nishi, Ryoichi Ichikawa
  • Patent number: 8471520
    Abstract: A power delivery rate from a renewable power source to a load is managed by determining, by processing circuitry, a change in a power generation rate, determining, by the processing circuitry, whether the change in the power generation rate exceeds a limit, and then, adjusting, by control circuitry, a power transfer rate to or from a power storage device, such that the adjusting is sufficient to prevent the power delivery rate from exceeding the limit.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: June 25, 2013
    Assignee: Xtreme Power Inc.
    Inventors: Carlos James Coe, Aeron Neils Hurst, Mark Isaac Hardin, Matthew Clayton Such, Richard Thomas Jennings
  • Publication number: 20130154544
    Abstract: A secondary battery state detecting apparatus for detecting a state of a secondary battery installed in a vehicle is provided, which includes a current detecting unit that detects an electric current flowing to the secondary battery, a voltage detecting unit that detects a voltage of the secondary battery, and a determining unit that determines, in a case where an external device is directly connected to terminals of the secondary battery and the secondary battery is charged or discharged without passing through the current detecting unit, whether or not an irregular charging-discharging has occurred, in accordance with a change in a current value and a voltage value detected by the current detecting unit and the voltage detecting unit.
    Type: Application
    Filed: February 18, 2013
    Publication date: June 20, 2013
    Applicants: Furukawa Automotive Systems Inc., Furukawa Electric Co., Ltd.
    Inventors: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
  • Publication number: 20130154574
    Abstract: A charge acceptance limit determination apparatus includes a voltage measuring unit that measures a voltage of a secondary battery, a current measuring unit that measures an electric current flowing through the secondary battery, and a determining unit that determines whether or not the secondary battery has reached a charge acceptance limit in accordance with a position on a current-voltage plane of a voltage value and a current value that are measured by the voltage measuring unit and the current measuring unit.
    Type: Application
    Filed: February 18, 2013
    Publication date: June 20, 2013
    Applicants: FURUKAWA AUTOMOTIVE SYSTEMS INC., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Furukawa Electric Co., Ltd., Furukawa Automotive Systems Inc.
  • Patent number: 8456136
    Abstract: A method and apparatus for battery gauging in a portable terminal are provided. In the battery gauging method, it is determined in a low-power mode whether a listening interval occurs for detecting the presence of a received signal. The remaining battery capacity is detected if the listening interval occurs. An interrupt signal is transmitted to the second processor, operating in a low-power mode, if the remaining battery capacity is less than or equal to a threshold. Upon receipt of the interrupt signal, the second processor wakes up to interrupt the power of the portable terminal.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: June 4, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Kyu Kim, Dong-Yoon Oh