Detection Of Current And Voltage Amplitude Patents (Class 320/164)
  • Patent number: 10884063
    Abstract: The present invention relates to a battery management system, which includes: at least one cell group configured to include first and second battery cells connected in parallel between first and second bus bars; a plurality of first and second measurement terminals positioned on the first and second bus bars; a plurality of third and fourth measurement terminals positioned at positions on the first bus bar, which correspond to one of ends of each of the first and second battery cells, respectively; a cell voltage measuring unit configured to measure a cell voltage of the cell group by using the first and second measurement terminals; a voltage drop measuring unit configured to measure an error voltage corresponding to a resistance value of the first bus bar by using the third and fourth measurement terminals; and a battery management unit configured to calculate a corrected cell voltage by using the cell voltage and the error voltage.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: January 5, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yoonsuk Jeon, Gooyun Jung
  • Patent number: 10770914
    Abstract: A system for generator-based charging of a battery module may include the battery module, a sensor located adjacent the battery module, a generator controller comprising a processor and a non-transitory memory device storing instructions. The battery modules include one or more battery types, such as lithium ion batteries. The generator controller analyzes one or more sensor signals received from the sensor, the signals associated with battery conditions including temperature, a current, a voltage, a state of charge, a state of health and the like. The generator controller calculates a generator current value for use in charging the battery module. Next, the generator controller may generate a control signal comprising a command that may cause the generator to provide a charging current having the current value. The control signal is generated using a first control loop associated with a battery voltage and a second control loop associated with a battery current.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: September 8, 2020
    Assignee: C.E. Niehoff & Co.
    Inventor: Dimitar Delevski
  • Patent number: 10744660
    Abstract: An integrally formed rigid razor blade made of martensitic stainless steel includes a cutting edge portion, a base portion, and a bent portion. The cutting edge portion extends along a cutting edge portion axis and has a cutting edge at one end. The base portion extends along a base portion axis. The bent portion is intermediate the cutting edge portion and the base portion. The blade has a concave face and an opposed convex face. An average radius of curvature of the concave face of the bent portion is between 0.4 millimeters and 1 millimeter.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: August 18, 2020
    Assignee: BIC VIOLEX S.A.
    Inventors: Vasileios Davos, Vassilis Papachristos, Dimitrios Efthimiadis, Panagiotis Zafiropoulos, Nikolaos Skounakis, Ioannis Komianos, Michalis Karoussis, Anastasios Papageorgiou
  • Patent number: 10692674
    Abstract: At least some embodiments are directed to an electronic device port system comprising a first device configured to negotiate power supply contracts from a power source via a universal serial bus (USB) cable. The system also comprises a second device configured to negotiate power supply contracts from the power source via the USB cable when the first device is unable to negotiate power supply contracts from the power source. The second device is configured to activate a switch after the second device negotiates a power supply contract with the power source. The switch is configured to permit the provision of power from the power source to a battery system of the electronic device per the negotiated power supply contract.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: June 23, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Deric Wayne Waters
  • Patent number: 10656218
    Abstract: A leakage current detection apparatus and detection method thereof for detecting a leakage current generated when a tested circuit is in a standby state are provided. The leakage current detection apparatus includes a capacitor, a pre-charge circuit, a discharge current generator and a detection result generator. The pre-charge current is provided to pre-charge the capacitor during a first time interval. The discharge current generator generates a discharge current according to the leakage current when the tested circuit is in a standby state and during a second time interval, and the capacitor is discharged accordingly. The leakage detection result is generated in the second time interval by comparing a voltage value on a detection end and a voltage value of a preset reference voltage.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 19, 2020
    Assignee: Winbond Electronics Corp.
    Inventor: Ju-An Chiang
  • Patent number: 10554061
    Abstract: A charging system that includes a switching control circuit coupled to four series-coupled MOSFET transistors; a flying capacitor coupled across two of the four series-coupled MOSFET transistors; and node between the two of the four series coupled transistors that couples to an output inductor to form a buck regulator is presented. Embodiments of the charging system can have increased efficiency, can reduce the size and inductance of the output inductor, and can be produced with a low voltage process.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 4, 2020
    Assignee: Integrated Device Technology, Inc.
    Inventors: Rui Liu, Gustavo James Mehas, Lijie Zhao, Tae Kwang Park, Zhitong Guo
  • Patent number: 10541545
    Abstract: Apparatuses and methods for removing a defective energy storage cell from an energy storage array is described. An apparatus includes an energy storage array including a plurality of energy storage cells, and a cell removal circuit coupled to the energy storage array. The cell removal circuit is configured to prevent a defective energy storage cell of the plurality of energy storage cells from causing other energy storage cells of the plurality of energy storage cells to become defective. A method includes receiving power at a charging node of an energy storage array, the energy storage array including a plurality of energy storage cells. Responsive to failure of an energy storage cell of the plurality of energy storage cells, current is provided through the defective energy storage cell, and responsive to the defective energy storage cell becoming an open circuit, discontinuing provision of the current through the defective energy storage cell.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 21, 2020
    Assignee: Micron Technology, Inc.
    Inventor: Shaun Stickel
  • Patent number: 10523046
    Abstract: An energy storage apparatus. The energy storage apparatus includes an energy storage, wherein the energy storage is connected to at least one energy source, wherein the energy storage is configured to store energy from the at least one energy source; a power supplier, wherein the power supplier is connected to an external load, wherein the power supplier is configured to provide energy from the energy storage to the external load; and a distribution regulator, wherein the distribution regulator is configured, in real-time, to operate the energy storage apparatus in a reduced power mode.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: December 31, 2019
    Assignee: NOVA LUMOS LTD.
    Inventors: Rafael Boneh, Nir Marom, David Vortman, Nir Nitzani
  • Patent number: 10516279
    Abstract: A power receiving device, which receives power from a power feed device via a removable cable, includes: a battery; a charging circuit configured to charge the battery with a bus voltage received from the power feed device via the cable; and a controller configured to communicate with the power feed device and instruct a target value of the bus voltage, wherein the controller adaptively changes the target value of the bus voltage according to a state of the power receiving device.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: December 24, 2019
    Assignee: ROHM CO., LTD.
    Inventor: Shinya Kobayashi
  • Patent number: 10483771
    Abstract: Systems and methods for hybrid energy harvesting for transaction cards are disclosed. Embodiments include a transaction card comprising a data storage device configured to supply account information to a transaction card terminal, a primary rechargeable power source to allow recharging and further to receive charging energy from the transaction card terminal during a transaction using the card, a secondary rechargeable power source configured to receive energy from the first rechargeable power source, and a power controller configured to control a flow of energy between the first and second rechargeable power sources.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: November 19, 2019
    Assignee: Capital One Services, LLC
    Inventors: David Wurmfeld, Tyler Locke
  • Patent number: 10439420
    Abstract: The present disclosure provides a charging method, a charging adapter and a charging system. The charging adapter includes a second controller and an adjusting circuit including a current detection circuit. The second controller is configured to receive a voltage value of a cell, search a threshold range table to obtain a current adjusting instruction. The current detection circuit is configured to detect a current value of a power signal outputted by the adjusting circuit. The second controller is further configured to calculate a difference between the current value detected and a current value specified by the current adjusting instruction, and send a calibration instruction to the adjusting circuit when an absolute value of the difference calculated is greater than a difference threshold. The adjusting circuit is configured to calibrate the power signal according to a current difference specified by the calibration instruction, and output a calibrated power signal.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: October 8, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Wenqiang Cheng, Fuchun Liao, Liangcai Peng, Kewei Wu
  • Patent number: 10389409
    Abstract: A method for communication between at least a first telecommunication terminal and a second telecommunication terminal includes: in the event that a charge state of the energy store of the first telecommunication terminal is below a predetermined reference charge state, transmitting a message comprising energy transmission information from the first telecommunication terminal to the second telecommunication terminal, the energy transmission information comprising a request to transmit additional energy to the energy store of the first telecommunication terminal; and increasing the charge state of the energy store of the first telecommunication terminal, or transmitting at least one message between a telecommunication network and the second telecommunication terminal, for the first telecommunication terminal.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: August 20, 2019
    Assignee: DEUTSCHE TELEKOM AG
    Inventor: Michael Kurz
  • Patent number: 10302691
    Abstract: A method for estimating insulation resistance between a terminal of a battery and an electrical ground, including: connecting a measuring circuit to one terminal of the battery, the measuring circuit including a resistance of known value and a capacitance; application of a known input signal having an input voltage; measurement of an output voltage between the ground and a point located between the resistance of known value and the capacitance; determination of a complex impedance of a dipole of the capacitance and the insulation resistance or determination of parameters of a differential equation; and determination of the insulation resistance from the parameters of the differential equation or the complex impedance.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: May 28, 2019
    Assignee: RENAULT S.A.S.
    Inventors: Lionel Cordesses, Michel Mensler, Sid-Ali Randi, Daniel Chatroux, Sebastien Carcouet
  • Patent number: 10135278
    Abstract: The present disclosure provides a charging method and a charging system. The charging system includes a charging adapter and a mobile terminal, the charging adapter includes a second controller and an adjusting circuit, and the mobile terminal includes a cell detection circuit and a cell. The cell detection circuit acquires a voltage value of the cell, and sends the voltage value of the cell to the second controller, the second controller searches a threshold range table for a current adjusting instruction matched with a threshold range containing the voltage value of the cell, and sends the current adjusting instruction to the adjusting circuit, and the adjusting circuit performs a current adjustment according to the current adjusting instruction and outputs a power signal after the current adjustment, in which the threshold range table records threshold ranges and current adjusting instructions having a one-to-one mapping relation with threshold ranges.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: November 20, 2018
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Jialiang Zhang, Wenqiang Cheng, Fuchun Liao, Liangcai Peng, Kewei Wu
  • Patent number: 10135285
    Abstract: An electrical system for low-power charging of personal electronic devices is made available at each passenger seat in a vehicle using wireless power technology. Alternating current is delivered by conductors behind the sidewall panels or under the floor of the vehicle body to the passenger area. Electrical power is transferred from these conductors using transmit coils attached outboard of the sidewall panels or below the floor to receive coils attached to passenger seats near the transmit coils. The electrical current induced in the receive coils is made available via electrical power charging circuits at a convenient location for each seat via conventional charging ports. Transmit and receive coils are designed and configured to permit different seating configurations without the need for rewiring by placement and design of larger transmit and receive coils or by using track-mounted transmit and receive coils or a combination of these.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: November 20, 2018
    Assignee: The Boeing Company
    Inventor: Loren Thomas Ayotte
  • Patent number: 10116155
    Abstract: A battery charging circuit has a first switching circuit and a second switching circuit which are coupled in parallel. A control circuit has a plurality of feedback control loops, a logic integrated circuit, a first logic circuit and a second logic circuit, wherein the plurality of feedback control loops provides a plurality of feedback control signals, the logic integrated circuit provides a logic integrated signal based on the plurality of feedback control signals, the frequency dividing circuit provides a first frequency dividing signal and a second frequency dividing signal based on the logic integrated signal, the first logic circuit controls the first switching circuit based on the first frequency dividing signal and a first duration signal, the second logic circuit controls the second switching circuit based on the second frequency dividing signal and a second duration signal.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 30, 2018
    Assignee: Chengdu Monolithic Power Systems Co., Ltd.
    Inventors: Min Xu, Qiming Zhao
  • Patent number: 10111287
    Abstract: An electrical circuit, in some embodiments, comprises a control circuit having a plurality of switches and an electrical load having a plurality of load components. A first of the plurality of switches is configured to control a first of the plurality of load components. A second of the plurality of switches is configured to control a second of the plurality of load components synchronously with the first of the plurality of switches.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: October 23, 2018
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Andrew Niles, Kevin Joseph O'Connor
  • Patent number: 10110039
    Abstract: A system according to examples of the present disclosure includes a battery charger electrically coupled to a battery and a battery charging circuit. The battery charging circuit includes an operational amplifier having a negative input to receive a pre-bias voltage, a positive input, an output, and a voltage offset. The battery charging circuit also includes a charge controller having an analog-to-digital converter to receive a voltage output from the output of the operational amplifier and a voltage supply to supply a voltage input into the positive input of the operation amplifier to cancel the voltage offset of the operational amplifier. In the example, the voltage output of the charge controller is a function of the voltage input of the charge controller.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: October 23, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Thomas Sawyers, Jon G Lloyd
  • Patent number: 9985427
    Abstract: An electronic circuit arrangement may include a first and a second electrical supply line for connecting an electronic device with a rechargeable battery. The first electrical supply line may be connected at one end with the rechargeable electric battery and at the other end with the electronic device for supplying electric energy. At least two switching elements may be provided in the first electrical supply line, which each may be switchable between an open state, in which the respective switching element electrically interrupts the first supply line, and a closed state. The electronic circuit arrangement may include a protective circuit arrangement and a reset circuit arrangement.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: May 29, 2018
    Assignee: ECOM INSTRUMENTS GMBH
    Inventor: Norbert Sack
  • Patent number: 9859738
    Abstract: A battery system controller is provided which is used for a battery system including a generator, electrical loads, a lead storage battery, a high performance storage battery which has higher-power and higher-energy density, and an opening and closing switch which switches the generator and the lead storage battery, and the high performance storage battery to an electrically conducting state or an interrupted state, a terminal voltage of the high performance storage battery being controlled so as to be lower than a terminal voltage of the lead storage battery. The battery system controller includes a control unit which allows the opening and closing switch to switch from an electrically conducting state to an interrupted state on the condition that charging current flowing to the high performance storage battery is smaller than a determination value, the larger an internal resistance of the lead storage battery, the smaller the determination value is set.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: January 2, 2018
    Assignee: DENSO CORPORATION
    Inventors: Naoki Katayama, Shigenori Saito
  • Patent number: 9780661
    Abstract: Switch mode power supplies and integrated circuits are presented to provide a DC output voltage signal using high and low side switches, with a switching control circuit to turn off the high side switch and engage an active shunt circuit to provide a reduced voltage to continue converter operation to accommodate high input voltage transients when the DC input voltage exceeds a threshold voltage without requiring an oversized low side switch for improved efficiency through reduced switching and conduction losses in normal operation.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: October 3, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sombuddha Chakraborty, Yogesh Kumar Ramadass
  • Patent number: 9740261
    Abstract: A method of power delivery. Port controllers each include a state machine, an IO pin, a receptacle supply pin receiving power from a receptacle, and a gate driver pin coupled to a control node of a power path switch each having an output coupled to a load. The state machines implement a dead-battery control (DBC) algorithm upon sensing a DB condition. The DBC algorithm pulls up the IO pin, starts a timer for T1, and monitors the IO pin for T1. If the IO pin is pulled low, the port controller is reset for a pulled low period, the DBC algorithm is then restarted or its IO pin is monitored until not pulled low for T1. One port controller pulls its IO pin low for an assertion period to claim priority over the other port controller, and closes its associated power path switch to exclusively provide power to the load.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: August 22, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Deric Wayne Waters, Roy Alan Hastings
  • Patent number: 9660305
    Abstract: A method of controlling a high-temperature storage battery connected to an electric power system, an apparatus for controlling the storage battery, and an electric power control system reside in that, when the temperature of the storage battery is equal to or lower than a reference temperature, charging and discharging the storage battery with charging and discharging electric power, which is the sum of charging and discharging electric power based on a preset process of operating the storage battery and charging and discharging electric power corresponding to charging and discharging cycles each of a continuous charging time of 1 hour or shorter and a continuous discharging time of 1 hour or shorter, for thereby supplying thermal energy to the storage battery.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: May 23, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Tetsuya Hatta, Akihiro Kai
  • Patent number: 9485818
    Abstract: Current spikes may occur when dynamically shortening a light emitting diode chain. These current spikes can be avoided by using a voltage control loop to regulate the output of the LED driver just prior to the transition period. Specifically, regulation of the LED driver is switched from a current control loop (e.g., a control loop regulating the output current of the led driver) to a voltage control loop (e.g., a control loop regulating the output voltage of the led driver) just before the LED chain is shortened. The voltage control loop then reduces the voltage of the LED driver to a target voltage prior to shortening the LED chain, thereby allowing the LED chain to be shortened without eliciting a current spike.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: November 1, 2016
    Assignee: Infineon Technologies AG
    Inventors: Maurizio Galvano, Roberto Penzo, Paolo Milanesi
  • Patent number: 9419458
    Abstract: Discharge is stopped when a voltage of a battery becomes smaller than a defined value or a remaining capacity of the battery reaches 0, and further, when power to a system cannot be maintained, the system is automatically shut down to be put into a shutdown state. When it is determined that the voltage of the battery or an SOC from a battery monitor 11 is smaller than the defined value, a discharge control switch 22 is turned off. A voltage Vx corresponding to a voltage between terminals T1 and T2 is input to an A/D port of a controller 21 and a value thereof is monitored. When it is determined that the voltage Vx input to the A/D port is smaller than a defined value, the controller 21 turns off a switch circuit 12 to turn off power to the battery monitor 11.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: August 16, 2016
    Assignee: Sony Corporation
    Inventor: Eiji Kumagai
  • Patent number: 9417288
    Abstract: A process for performing an auto-test of a fully discharged battery (130) of an electronic appliance including a battery charger (160), said process involving the steps of: performing (210) an initialization phase; charging (220) said battery (130) with a predetermined constant current during a predefined period allowing stabilization of said current (Icurrent); detecting (230) the voltage of said battery after said predefined period, said battery being still in charge; testing (240) whether said sensed voltage is comprised within a predetermined range of threshold values (V1, V2), and reporting a battery failure when said sensed value is outside said range. The invention is particularly adapted to the auto-test of a backup battery made of Electric double layer capacitors or any fully discharged backup battery.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: August 16, 2016
    Assignee: ST-Ericsson SA
    Inventor: Christophe Belet
  • Patent number: 9339659
    Abstract: An external charger for a battery in an implantable medical device (implant), and technique for charging batteries in multiple implants using such improved external charger, is disclosed. During charging, values for a parameter measured in the implants are reported from the implants to the external charger. The external charger infers from the magnitudes of the parameters which of the implants has the highest (hot) and lowest (cold) coupling to the external charger. The intensity of the magnetic charging field is optimized for the cold implant to ensure that it is charged with a maximum (fastest) battery charging current. The duty cycle of the magnetic charging field is also optimized for the hot implant to ensure that it does not exceed a power dissipation limit. As a result, charging is optimized to be fast for all of the implants, while still safe from a tissue heating perspective.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: May 17, 2016
    Assignee: Boston Scientific Neuromodulation Corporation
    Inventors: Rafael Carbunaru, Jordi Parramon, Robert Ozawa, Jess Shi, Joey Chen, Md. Mizanur Rahman
  • Patent number: 9257893
    Abstract: A universal serial bus (USB) power supply is disclosed as including a main body (12) and a cable (24) releasably connectable with each other, the main body (12) being releasably connectable to a direct current (DC) power source and having a USB receptacle (20) electrically connectable with the DC power source. The cable (24) includes a USB plug (26) releasably connectable with the USB receptacle (20) to establish electrical connection and data communication there-between and a connector (30) electrically connected with the USB plug (26). The power supply is operable in a detached mode in which the main body (12) is out of connection with the cable (24) and in an attached mode in which the main body (12) is releasably connected with the cable (24). The power supply is adapted, when in the attached mode, to automatically change the voltage of a DC power output from the connector (30).
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: February 9, 2016
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Chung Fai Norman Tse, Shu Hung Henry Chung, Yau Chung John Chan
  • Patent number: 9235224
    Abstract: A voltage regulating device includes a power supply adapter, a voltage and current signal processing module, a control module, and a voltage regulating module. The power supply adapter supplies voltage to an electronic device. The voltage and current signal processing module detects the current and voltage supplied by the power supply adapter, and calculated the desired voltage adapted for the electronic device according to the detected current and voltage and a preset voltage for the electronic device. The control module generates a control signal according to the calculated desired voltage. The voltage regulating module regulates the voltage supplied by the power supply adapter according to the control signal, to cause the voltage supplied by the power supply adapter to adapt for the electronic device. As a result, the voltage regulating device can regulate the voltage supplied by the power supply adapter to adapt for the electronic device, which can be used conveniently.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 12, 2016
    Assignee: MINWA ENERGY AUTO SWITCH TECHNOLOGY COMPANY LIMITED
    Inventor: Hak Wah Lau
  • Patent number: 9167853
    Abstract: A USB charger for electronic cigarettes, comprising a USB interface configured for connecting with a power supply and a load end configured for connecting with a load, wherein, the USB charger for electronic cigarettes further comprises a voltage comparison unit, a benchmark circuit, a sampling circuit, a current detecting element, a state indicating unit, and a low voltage difference linear regulator connected between the USB interface and the load end; the benchmark circuit is connected between an output end of the low voltage difference linear regulator and an input end of the voltage comparison unit; and the state indicating unit is connected with an output end of the voltage comparison unit; the USB charger for electronic cigarettes of the present invention achieves advantages effects of being safer and improving users' experiences.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: October 27, 2015
    Inventor: Zhiyong Xiang
  • Patent number: 9160037
    Abstract: Disclosed are an apparatus and method for estimating an available time of a battery relatively accurately in consideration of a driving pattern of a user. The apparatus for estimating an available time of a battery includes a current measuring unit for measuring an output current of the battery, a SOC estimating unit for estimating SOC (State Of Charge) of the battery, and a controller for estimating an available time of the battery by using a measured current value obtained by the current measuring unit, an estimated SOC value obtained by the SOC estimating unit and an entire capacity of the battery.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 13, 2015
    Assignee: LG Chem, Ltd.
    Inventor: Kyu-Ha Park
  • Patent number: 9153999
    Abstract: Embodiments of the present invention include circuits and methods for sensing resistance. In one embodiment the present invention includes a method comprising detecting a voltage at an input of a regulator received from a power adapter, determining a maximum current capability of the power adapter, and charging a battery coupled to an output of the regulator using said detected voltage and said maximum current as inputs to said regulator. In one embodiment, the detected voltage is used to configure a voltage used to determine if or when a voltage received from a power adapter drops below some threshold.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: October 6, 2015
    Assignee: QUALCOMM, Incorporated
    Inventors: Shadi Hawawini, M. Abid Hussain, Georgios K. Paparrizos, Sridhar Kotikalapoodi
  • Patent number: 9093855
    Abstract: A portable device charger is disclosed, which is able to charge portable devices whether it is connected to an external power supply or not. The charger connects to household AC power as well as USB DC power, and further has a photovoltaic cell. It manages the input power from these three sources to charge a portable device and/or recharge the charger's battery, by supplementing the input power with battery power if the device demands more power than the input source, and charging the battery with remaining power if the device demands less power than is provided by the input source. The charger turns off the AC/DC converter and draws no power from the AC source if the battery is full and there is no attached device.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: July 28, 2015
    Assignee: Powerstick.com Inc.
    Inventor: Zuohang Zhu
  • Patent number: 9041343
    Abstract: A system for protecting a power consuming circuit, the system comprising two terminals for receiving power and two terminals for providing received power. Between one of the receiving terminals and a providing terminal, a transistor is provided which is controlled by a Zener diode and to break the connection between one of the receiving terminals and a providing terminal, if a voltage over the providing terminals or the receiving terminals exceeds the breakdown voltage of the Zener diode.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: May 26, 2015
    Assignee: Secop GmbH
    Inventor: Rune Thomsen
  • Patent number: 9035623
    Abstract: Circuitry and techniques to measure, at the battery's terminals, characteristic(s) of the charging signal applied to the battery/cell during the recharging operation and, in response to feedback data which indicates the charging signal is out-of-specification, control or instruct the charging circuitry to adjust characteristic(s) of the recharging signal (e.g., the amplitude of the voltage of and/or current applied to or removed from the battery during the charging operation). For example, a rechargeable battery pack comprising a battery, and controllable switch(es), a current meter and voltmeter, all of which are fixed to the battery. Control circuitry generates control signal(s) to adjust a current and/or voltage of the charging signal using the feedback data from the current meter and/or voltmeter, respectively.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: May 19, 2015
    Assignee: Qnovo Inc.
    Inventors: Fred Berkowitz, Nadim Maluf, Mark Gurries, Miroslav Zmrzli, David Bruce Koons
  • Patent number: 9018919
    Abstract: Various embodiments of a battery detector are provided. In one aspect, a battery detector of a portable electronic device is applied to a battery module without an identification (ID) terminal. When the portable electronic device receives a direct current (DC) voltage provided by an external transformer to conduct a startup procedure, the battery detector detects whether the battery module is connected to the portable electronic device or not, and prevents the portable electronic device from conducting erroneous operations.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: April 28, 2015
    Assignee: MStar Semiconductor, Inc.
    Inventors: Cheng-Yi Li, Kun-Wei Tseng, Yi-Wei Wang
  • Patent number: 9018921
    Abstract: A control circuit for use in a battery charger circuit that includes a switching voltage regulator, with the control circuit having a constant current charging mode and a constant voltage charging mode. A switcher controller is provided which configured to control a state of a top side switching transistor and a low side transistor of the switching voltage regulator in response to at least one error signal. A power path transistor switch is disposed intermediate an output of the switching voltage regulator and a first node for receiving a first terminal of a battery to be charged.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: April 28, 2015
    Assignee: National Semiconductor Corporation
    Inventor: Sanjay Gurlahosur
  • Patent number: 9007035
    Abstract: A charge control circuit supplies power from an external power source to a first common node and charges a second common node. A regulator circuit is coupled between the external power source and the first common node, and a transistor is coupled between the first common node and the second common node. A current sensing and control device senses the current from the first common node to the second common node and generates a first control signal. A first voltage sensing and control device senses a voltage at the first common node, and generates a conduction control signal to control the transistor. A second voltage sensing and control device senses a voltage at the second common node, and generates a second control signal. The regulator circuit provides system power to the first common node according to the first control signal and the second control signal.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: April 14, 2015
    Assignee: Richtek Technology Corporation
    Inventor: Nien-Hui Kung
  • Patent number: 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: 8981733
    Abstract: In one embodiment the present invention includes a system and method of charging a battery using a switching regulator. In one embodiment, a switching regulator receives an input voltage and input current. The output of the switching regulator is coupled to a battery to be charged. The switching regulator provides a current into the battery that is larger than the current into the switching regulator. As the voltage on the battery increases, the current provided by the switching regulator is reduced. The present invention may be implemented using either analog or digital techniques for reducing the current into the battery as the battery voltage increases.
    Type: Grant
    Filed: May 22, 2013
    Date of Patent: March 17, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: M Abid Hussain, Kenneth C Adkins, Georgios Konstantinos Paparrizos
  • Publication number: 20150069976
    Abstract: A charging controlling system includes an input terminal, an output terminal, a battery terminal, and a switch terminal. The charging controlling system includes a coil connected to the switch terminal at a first end thereof. The charging controlling system includes a resistor connected to a second end of the coil at a first end thereof and to the battery terminal at a second end thereof. The charging controlling system includes a capacitor connected between the second end of the coil and the ground. The charging controlling system includes a diode connected to the switch terminal at a cathode thereof and to the ground at an anode thereof. The charging controlling system includes a charging controlling circuit that controls charging of the battery.
    Type: Application
    Filed: February 19, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yuji Yamanaka
  • Patent number: 8928285
    Abstract: Stated is a charging-current regulating device for charging an energy storage device for a field device, and for regulating a charging current for the energy storage device, wherein regulating the charging current for the energy storage device takes place in such a manner that a limiting value relating to an input current of the field device is not exceeded. Regulating the charging current may take place in such a manner that energy storage takes place as quickly as possible and without overloading an input protection circuit of the field device.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: January 6, 2015
    Assignee: VEGA Grieshaber KG
    Inventors: Volker Allgaier, Andreas Isenmann, Karl Griessbaum
  • Patent number: 8921746
    Abstract: An inductively-heated applicator system including a heating module and applicator or applicator pen. The heating module includes a dock for seating the applicator. The heating module includes circuitry to selectively generate an electromagnetic field to wirelessly provide energy to the applicator when it is positioned in the dock. The heating module may also include temperature control circuitry to at least one of monitor and control the temperature of the applicator. The applicator pen includes a heating element that may be heated through energy provided by the electromagnetic field. The heating element may be directly inductively heated by the electromagnetic field. The heating element may be a roller element that heats and applies the product. Alternatively, the applicator may include a secondary in which electrical power is induced when the electromagnetic field is present. In this alternative, the power may be applied to the heating element to produce resistive heat.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: December 30, 2014
    Assignee: Access Business Group International LLC
    Inventors: David W. Baarman, Richard Bylsma, Thomas Jay Leppien, Jesse C. Leverett, Steve O. Mork
  • Patent number: 8917064
    Abstract: A control circuit is provided which includes a pre-charge circuit connected in parallel with a solid state switching device of, for example, a power distribution network. The pre-charge circuit pre-charges a load capacitance at a load side of the switching device prior to activation of the switching device. The pre-charge circuit includes a threshold waveform generation circuit and an over-current detect circuit. The threshold waveform generation circuit synthesizes a maximum acceptable charging waveform for the pre-charge circuit in charging the load capacitance, and the over-current detect circuit signals an over-current fault condition upon a charging current through the pre-charge circuit exceeding the synthesized, maximum acceptable charging waveform. The pre-charge circuit includes a sense resistor coupled to a power input side of the solid state switching device, with charging current through the pre-charge circuit being monitored via the sense resistor.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: December 23, 2014
    Assignee: International Business Machines Corporation
    Inventor: Robert B. Schlak
  • Patent number: 8907635
    Abstract: A charging circuit includes a transistor, a current regulating resistor, a field effect transistor (FET) and a main controller. The transistor includes an emitter, a base and a collector, the FET includes a source, a gate and a drain. The emitter is connected to the battery charger; the drain is connected to the battery. The main controller includes a current control unit, a charge control unit and a voltage detection unit. The current control unit transmits current signals to the base of the transistor to turn on the transistor and regulate the current values of the collector, the voltage detection unit detects the voltage of the battery and controls the charge control unit according to detection result, and the charge control unit sends a command signal to the gate to switch the FET on or off.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: December 9, 2014
    Assignees: Shenzhen Futaihong Precision Industry Co., Ltd., Chi Mei Communication Systems, Inc.
    Inventor: Fan Wu
  • Patent number: 8901894
    Abstract: A battery management method and apparatus. In one embodiment of the method, a source current is divided into Ic and Icr. Ic is transmitted to and charges a battery. A first voltage is generated that is related to Icr. The first voltage is converted into a first digital signal. A processing unit receives and processes the first digital signal in accordance with instructions stored in a memory. The transmission of Ic to the battery is interrupted in response to the processing unit processing the first digital signal. Current provided by the battery is divided into Idc and Idcr. Idc is transmitted to a device. A second voltage is generated that is related to Idcr. The second voltage is converted into a second digital signal. The processing unit receives and processes the second digital signal in accordance with instructions stored in the memory. The transmission of Idc to the battery is interrupted in response to the processing unit processing the second digital signal.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: December 2, 2014
    Assignee: Renesas Electronics America Inc.
    Inventors: Tetsuo Sato, Tsutomu Kawano, Koji Kashimoto, Takao Hidaka, Tsuyoshi Ota, Ryoji Kato
  • Patent number: 8896274
    Abstract: A charger calibrating device and a calibrating method thereof. The device comprises a control module and a processing module. The control module controls a charger to be calibrated to perform a first stage charging and a second stage charging on an electronic device. The processing module performs an adjusting process according to the second stage charging time for adjusting the high level period of the PWM signal in the charging circuit of the charger. In the adjusting process, generating an updated high level period by adding or decreasing a preset adjusting amplitude, and decrease the preset adjusting amplitude by half to generate an updated adjusting amplitude. The processing module terminates the calibrating process after repeating the aforementioned calibrating loop a preset number of times.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: November 25, 2014
    Assignee: Altek Corporation
    Inventors: Wei-Chun Lo, Pei-Shin Chen, Yueh-Chang Chen, Chao-Tsung Tsai
  • Patent number: 8890485
    Abstract: A charger circuit comprising: a charging path coupled between an input voltage and a battery; a power switch on the charging path; a switch control circuit controlling the power switch; a timer counting a charging period; and a low current control circuit issuing a signal to the switch control circuit to control the power switch such that a charging current is maintained to be a predetermined low current when the timer counts to a predetermined maximum charging period.
    Type: Grant
    Filed: October 6, 2009
    Date of Patent: November 18, 2014
    Assignee: Richtek Technology Corporation, R.O.C.
    Inventors: Nien-Hui Kung, Kwan-Jen Chu
  • Patent number: 8878541
    Abstract: A battery voltage monitoring circuit includes a first power supply terminal to be connected to the positive terminal of a battery pack having rechargeable cells connected in series; a first supply voltage sensing terminal to be connected to the positive terminal of the battery pack; a first resistor connected between the first power supply terminal and the first supply voltage sensing terminal; a second supply voltage sensing terminal to be connected to the negative terminal of a first rechargeable cell of the rechargeable cells, the first rechargeable cell being on the positive terminal side of the battery pack and connected to the positive terminal of the battery pack; a second resistor connected between the second supply voltage sensing terminal and the first power supply terminal; and a first comparator configured to compare a voltage at the first power supply terminal and a voltage at the first supply voltage sensing terminal.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: November 4, 2014
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Akihiro Nishizawa, Takashi Takeda
  • Patent number: 8847557
    Abstract: A method of determining a charger of a mobile terminal, and which includes receiving, via a controller of the mobile terminal, a connection signal indicating the charger is connected to the mobile terminal; setting, via the controller, a charging current of the charger for charging the mobile terminal and increasing the set charging current in predetermined current units; measuring, via the controller, an actual current received from the charger and applied to the mobile terminal; comparing, via the controller, the set charging current with the measured actual current; determining, via the controller, a charging sector of the charger when the set charging current is larger than the measured actual current for a first predetermined amount of time; and calculating a charging current capacity of the charger using the determined charging sector.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: September 30, 2014
    Assignee: LG Electronics Inc.
    Inventors: Jonghyun Park, Janggeun Oh