With Dc-dc Converter (e.g., Flyback Supply, Etc.) Patents (Class 320/140)
  • Patent number: 10658918
    Abstract: A switching cell includes: a half-bridge circuit including a first electronic switch and a second electronic switch connected in series between a first input terminal and a second input terminal of an electronic converter, wherein a first capacitor is connected in parallel to the first electronic switch and a second capacitor is connected in parallel to the second electronic switch; a first inductor connected between a first output terminal of the electronic converter and an intermediate point between the first electronic switch and the second electronic switch; a second inductor and a first capacitor connected in series between a first terminal of the first inductor and the intermediate point; a switching circuit connected between the first terminal of the first inductor and a second output terminal of the electronic converter; and a third capacitance connected between the first terminal of the first inductor and the second input terminal.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: May 19, 2020
    Assignee: STMICROELECTRONICS S.R.L.
    Inventor: Osvaldo Enrico Zambetti
  • Patent number: 10608295
    Abstract: Smart batteries and smart battery systems are disclosed. A smart battery may include an energy-storage unit providing a cathode tab and an anode tab. The smart battery may also include a circuit integrated with the energy-storage unit. The circuit may be configured to provide electrical connections to the cathode tab and the anode tab of the energy-storage unit to an external device; measure a current, a voltage, a temperature, and/or an internal resistance of the energy-storage unit; control an input/output property of the energy-storage unit; and establish a data connection with the external device.
    Type: Grant
    Filed: April 5, 2016
    Date of Patent: March 31, 2020
    Assignee: Nova Greentech, Inc.
    Inventors: Song Ci, Qiangwen Wang
  • Patent number: 10587131
    Abstract: The invention concerns a measurement unit including: an electric ambient energy recovery generator; an element of capacitive storage of the electric energy generated by the generator; an electric battery; a first branch coupling an output node of the generator to a first electrode of the capacitive storage element; a second branch coupling a first terminal of the battery to the first electrode of the capacitive storage element; and an active circuit capable of transmitting a radio event indicator signal each time the voltage across the capacitive storage element exceeds a first threshold, wherein, in operation, the capacitive storage element simultaneously receives a first charge current originating from the generator via the first branch and a second charge current originating from the battery via the second branch.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 10, 2020
    Assignees: Commissariat à I'Energie Atomique et aux Energies Alternatives, STMicroelectronics (Crolles 2) SAS, STMicroelectronics SA
    Inventors: Séverin Trochut, Stéphane Monfray, Sébastien Boisseau
  • Patent number: 10541549
    Abstract: An object of the present invention is to provide a charging apparatus having high efficiency of charging a battery by inputting an alternating current voltage. A charging apparatus that charges a direct current battery includes a step-down converter unit to which a direct current voltage from a power supply is input and that converts the direct current voltage, and when a voltage of the direct current battery is between a predetermined first voltage smaller than a charge completion voltage of the direct current battery and the charge completion voltage, a variable voltage that increases from the first voltage to the charge completion voltage in accordance with charging of the direct current battery is input to the step-down converter unit.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: January 21, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Fumihiro Sato, Takae Shimada, Takuya Ishigaki, Takayuki Ouchi, Hiroyuki Shoji, Naoya Takahashi, Eigo Kishimoto
  • Patent number: 10455728
    Abstract: In some embodiments, a cooling system for an induction charger includes a thermal conditioning module in fluid communication with an induction charging assembly, which includes a dock and an induction charging module. The dock can be configured to receive a portable electronic device, such as a cell phone, that is configured to accept inductive charging from the induction charging module. The thermal conditioning module can include a fan or other fluid encouraging assembly, ducting, and a thermoelectric device (e.g., a Peltier device). A fluid, such as air, can flow from the fan and across and/or through the thermoelectric device, thereby conditioning the fluid. The conditioned fluid can be provided to the dock to at least partially offset the heat generated by the inductive charging and/or the portable electronic device.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: October 22, 2019
    Assignee: GENTHERM INCORPORATED
    Inventors: John Lofy, David Marquette
  • Patent number: 10284089
    Abstract: According to some embodiments, a bi-directional converter is configured to operate in a boost mode or a buck mode. The bi-directional converter includes a hysteresis control unit that includes a comparator that can be configured to determine whether the reference voltage has a positive slope or a negative slope in conjunction with the bi-directional converter operating in boost mode or buck mode. In addition, the comparator is configured to compare a fractional load voltage to a reference voltage so that the output load voltage corresponds to the waveform shape of the reference voltage.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Salvatore Reddiconto, Dong Yang
  • Patent number: 10164441
    Abstract: An apparatus for charging a plurality of series connected battery cells, includes a first and second input terminals for providing a charging voltage to the plurality of series connected battery cell. A transformer includes a primary side associated with the charging voltage and a secondary side includes a plurality of portions. Each of the plurality of portions is connected across at least one of the plurality of series connected battery cell. A switch in series between each of the plurality of portions of the secondary side and the at least one of the plurality of series connected battery cells increases an impedance between the portion of the secondary side and the associated one of the plurality of series connected battery cells in a first state and decreases the impedance between the portion of the secondary side and the associated one of the plurality of series connected battery cells in a second state.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: December 25, 2018
    Assignee: INTERSIL AMERICAS LLC
    Inventors: Zaki Moussaoui, Tony Allen
  • Patent number: 10107862
    Abstract: A fuel gauge system for measuring the amount of current in a battery is provided. The fuel gauge system includes a first resistive element connected in series to the battery, a second resistive element connected in series to the first resistive element, a first switch connected in parallel to the second resistive element to control a current flowing in the second resistive element, a second switch connected in series to the second resistive element to control the current flowing in the second resistive element, a controller configured to output a first switching signal to the first switch and output a second switching signal to the second switch, and a fuel gauge circuit configured to measure a battery current flowing in the first resistive element and the second resistive element.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: October 23, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kudo Ryotaro, Dong Jin Keum, Byung Chul Jeon, Jin Sub Choi
  • Patent number: 9985454
    Abstract: Disclosed is a power source device having a standby power-cutoff function, which is to be used to charge a battery. The power source device comprises: a micro-USB connector (24) for connecting to the power source unit (20) of a smartphone when the battery of the smartphone or the like is to be charged; and a power generation unit (32) supplying DC charging power to the smartphone (20) from an AC input power source. The present invention includes: a control unit (33) having at least one microprocessor for controlling the overall operation and functioning of a power source device (30); a power supply/cutoff unit (34) supplying/cutoff the AC input power to the power generation unit (32) according to the control of the control unit (33); and a current-sensing unit (CT) connected so as to monitor the current from the power supply/cutoff unit (34), provide the control unit (33) with the current, and provide an indication of the charging state of the battery.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 29, 2018
    Assignee: MILPROS CO., LTD.
    Inventor: Chang-Ho Kim
  • Patent number: 9939828
    Abstract: A direct current (DC)-DC converting circuit includes a voltage converter generating a regulation current in response to a driving signal and generating an output voltage and an output current; an output voltage regulator regulating the output voltage and outputting a first control signal; a voltage limiter limiting a voltage value of the first control signal below a threshold value; a current sensor sensing an intensity of the regulation current and generating a second control signal having a voltage value corresponding to a value of the sensed intensity; and a driving signal generator generating the driving signal based on the first and second control signals, the first control signal having the voltage value below the threshold value.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: April 10, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sungwoo Moon, Myeonglyong Ko, Dongjin Keum, Kyunggoo Moh, Pyungwoo Yeon, Youso Cheon
  • Patent number: 9829968
    Abstract: An electronic device is provided including: An electronic device comprising: a charging circuit including a battery coupled to a first end of an inductor, a first switch coupling a second end of the inductor to ground, and a second switch coupled to the second end of the inductor; and a controller configured to alternately close the first switch and the second switch in accordance with a duty cycle D, and increase a voltage transmitted to at least one system from the battery by using the inductor.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: November 28, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kuchul Jung, Kisun Lee
  • Patent number: 9825547
    Abstract: A multi-level DC-DC converter device includes an inverter, a 3-winding high-frequency transformer, a first full-bridge rectifier, a second full-bridge rectifier, a selective circuit and a filter circuit. A first winding at a primary side of the high-frequency transformer connects with the inverter while a second winding and a third winding of at a secondary side of the high-frequency transformer connect with the first full-bridge rectifier and the second full-bridge rectifier. The selective circuit connects with DC output ports of the first full-bridge rectifier and the second full-bridge rectifier, thereby operationally selecting two serially-connected full-bridge rectifiers or single full-bridge rectifier to output two voltage levels performed as a multi-level output voltage. The filter circuit connects between the selective circuit and a load for filtering harmonics and outputting a DC voltage.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 21, 2017
    Assignee: Ablerex Electronics Co., Ltd.
    Inventors: Wen-Jung Chiang, Kuo-Fang Huang, Wen-Chung Chen
  • Patent number: 9780656
    Abstract: A switched-mode power regulator circuit has four solid-state switches connected in series and a capacitor and an inductor that regulate power delivered to a load. The solid-state switches are operated such that a voltage at the load is regulated by repetitively (1) charging the capacitor causing a current to flow in the inductor and (2) discharging the capacitor causing current to flow in the inductor. The power regulator circuit may be configured to operate with zero current switching at frequencies in the range of 100 MHz, enabling it to be fabricated on a unitary silicon die along with the load that it powers.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: October 3, 2017
    Assignee: Empower Semiconductor, Inc.
    Inventors: David Lidsky, Timothy Alan Phillips
  • Patent number: 9755439
    Abstract: A battery state control circuit is provided for connection to multiple rechargeable batteries, the multiple batteries being connected in series, for connection to a primary coil connected in series to the multiple batteries, and for connection to multiple secondary coils to which electrical energy stored in the primary coil is transferred, the multiple secondary coils being connected in parallel to the multiple batteries, respectively. The battery state control circuit includes an adjustment unit to adjust the energy amount stored in the primary coil, in accordance with a state of at least one of the multiple batteries.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: September 5, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Norifumi Yamamoto, Akira Nakamura
  • Patent number: 9515506
    Abstract: A short-circuiting arrangement for capacitors of a high voltage converter are provided, the capacitors each having two connection terminals, the arrangement including a short-circuiting wire configured to be moved along while in sliding contact with the connection terminals and including a short-circuiting section with electrically conductive material connected to a ground potential and a probing section with electrically conductive material and a voltage evaluating unit electrically connected to the short-circuit section and the probing section and configured to detect, as the probing section and short-circuiting section are connected to the respective connection terminals, the voltage across the capacitor, compare the voltage with a discharge threshold and halt or move the short-circuiting wire based on the detected voltage.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: December 6, 2016
    Assignee: ABB TECHNOLOGY LTD
    Inventor: Christer Sjöberg
  • Patent number: 9515521
    Abstract: A detector arrangement included in an electric circuit arrangement which includes a stand by shut down and which comprises a first power supply (1) which is connected to mains voltage and which converts the mains voltage to a first voltage adapted for an electric motor (5) included in the electric circuit, the first power supply being, by means of a supply conductor (3) across a switch (4) by which the electric circuit may be closed or opened, is connected with its positive pole (2) to said motor, and the motor is, by means of a return conductor (6), connected to the negative pole (7) of said first power supply, as well as a control circuit (15) which, on the one hand, is connected via a first signal conductor (16), to the first power supply and, on the other hand, to an included second power supply (1 1) which feeds the control circuit with a second voltage which is substantially lower than the first voltage and which, with its negative pole, is connected to the return conductor, and detector means for regis
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: December 6, 2016
    Assignee: Isaberg Rapid AB
    Inventor: Arne Edvardsson
  • Patent number: 9481048
    Abstract: The invention relates to a method and an apparatus for converting the energy of an energy storage (2) for operating an arc (6), wherein a power unit (3) and an input and/or output device (5) for setting the current for operating the arc (6) is used to convert energy, as well as an appropriate welding device. In order to be able to provide the user with information on the state of energy storage (2), the time remaining for operating the arc (6) using the set current is calculated depending on a determined capacity of the energy storage (2) and a value for the current set on the input and/or output device (5), and said time is displayed on a corresponding display unit (27).
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: November 1, 2016
    Assignee: Fronius International GmbH
    Inventors: Christian Magerl, Jürgen Binder, Walter Stieglbauer, Bernhard Artelsmair
  • Patent number: 9444351
    Abstract: A normally-off bidirectional switch having two gates is connected to a transformer. The transformer has a first winding and a second winding. A first gate bias power supply configured to use power generated at the first winding to supply power for driving one of the gates of the bidirectional switch and a second gate bias power supply configured to use power generated at the second winding to supply power for driving the other gate of the bidirectional switch are provided.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: September 13, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Tatsuo Morita
  • Patent number: 9425638
    Abstract: An inductive power transfer device is provided for recharging cordless appliances. The device includes a plurality of inductors arranged in an array and connected with a power supply via switches which are selectively operable to activate the respective inductors. The inductors serve as the primary coil of a transformer. The secondary coil of the transformer is arranged in the appliance. When the appliance is arranged proximate to the power transfer device with the respective coils in alignment, power is inductively transferred from the device to the appliance via the transformer.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: August 23, 2016
    Inventor: Anthony Sabo
  • Patent number: 9348388
    Abstract: The disclosed embodiments provide a power management system that supplies power to components in an electronic device. The power management system includes a system microcontroller (SMC) and a charger. During operation, the power management system accepts power from at least one of a power adapter and a solar panel. Next, the power management system supplies the power to components in the electronic device without using a converter circuit between the solar panel and the power management system.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 24, 2016
    Assignee: Apple Inc.
    Inventors: Kisun Lee, Manisha P. Pandya, Shimon Elkayam
  • Patent number: 9331504
    Abstract: The disclosure relates to a method for charging a battery having at least one battery cell. A first connection of a charging device is connected to a first pole of the at least one battery cell by a rectifying device. The rectifying device is set up such that charging current can flow. The disclosure further relates to a charging device, a battery, and a motor vehicle, which are configured to carried out the method.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 3, 2016
    Assignee: Robert Bosch GmbH
    Inventor: Stefan Butzmann
  • Patent number: 9318780
    Abstract: A wirelessly rechargeable battery is provided having coils oriented off major battery axes to facilitate good coupling with power transmitter magnetic fields. A magnetic core may house charging electronics for a compact form factor. A wireless power transmitter that produces fields to maximize coupling with receiver coils.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: April 19, 2016
    Assignee: PowerbyProxi Limited
    Inventors: Daniel Robertson, Kunal Bhargava, Thushari Gomes
  • Patent number: 9300326
    Abstract: A charging circuit using a switch mode power supply to charge a battery from a connected external power adapter may periodically turn off the switch mode power supply and disconnect its input terminal from the switch mode power supply. A load may be connected to the input terminal. The input terminal is monitored for voltage collapse, indicating whether or not the power adapter is connected.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 29, 2016
    Assignee: QUALCOMM Incorporated
    Inventors: Thomas J O'Brien, Christian G Sporck
  • Patent number: 9236797
    Abstract: A system includes: a first converter for receiving a pre-stage input DC voltage from a power source, and providing a pre-stage output DC voltage including a first DC voltage or a second DC voltage; a modulator the modulator controlling the first converter; a second converter, coupled to the first converter; and a controller, the controller controlling an operation mode of the second converter and notifying the modulator about the operation mode of the second converter. The modulator and the controller receive an external voltage indication signal indicating whether the pre-stage output DC voltage is the first DC voltage or the second DC voltage. The modulator controls the first converter to output the pre-stage output DC voltage based on the voltage indication signal. The modulator notifies the controller about whether the pre-stage output DC voltage reaches a target level.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: January 12, 2016
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ke-Horng Chen, Chun-Yu Hsieh, Chih-Yu Yang, Chao-Jen Huang
  • Patent number: 9136754
    Abstract: The described technology relates generally to a power supply, a display device including the same, and a driving method thereof to reduce power consumption of the display device. Embodiments include a power source voltage controller sensing a panel current flowing in the display panel and controlling a feedback voltage according to the panel current and the power source voltage, and a DC-DC converter generating a power source voltage according to the feedback voltage to respectively supply it to the plurality of light emitting elements.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: September 15, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Keun Ahn, Shingo Kawashima
  • Patent number: 9041322
    Abstract: An electric power tool is included in a plurality of types of electric power tools. The plurality of types of electric power tools comprise a plurality of types of battery packs having different rated output voltages and a plurality of types of tool bodies, the housings of which are equipped with an attached part on which each of the battery packs is mounted in a freely removable manner. The attached part possessed by the plurality of types of tool bodies equipped with motors having different voltage characteristics is formed so as to be able to mount an arbitrary one of the plurality of types of battery packs having different rated output voltages. This makes it possible to widen the range of available battery packs and enhance convenience.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 26, 2015
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hidenori Shimizu, Masaaki Sakaue, Naotake Tanaka, Masaki Ikeda, Masaaki Okada
  • Patent number: 9041354
    Abstract: An energy storage system and a method of controlling the same is provided. The energy storage system may directly provide generated DC power or DC power stored in a battery to a DC load without performing a DC/AC conversion or an AC/DC conversion. Furthermore, in the case where a grid operates abnormally (e.g. power interruption) and the energy storage system functions as an uninterruptible power supply (UPS), power stored in a battery may be selectively provided to loads according to power remaining in a battery, and thus stored power may be used stably.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: May 26, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Eun-Ra Lee
  • Patent number: 9030171
    Abstract: A charging circuit for an electronic device includes a battery pack for providing a battery voltage; an adaptor coupled to an external voltage source, for providing an input voltage; and a charging module coupled to the adaptor, for charging the battery pack. The charging module includes a buck charging unit for performing buck charging on the battery pack according to a comparison result; and a boost charging unit for performing boost charging on the battery pack according to the comparison result.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: May 12, 2015
    Assignee: Wistron Corporation
    Inventor: Te-Lung Wu
  • Patent number: 9030156
    Abstract: In a power supply system provided with an assembled battery supervisory device which supervises an assembled battery composed of storage elements connected in series with one another, the system using the assembled battery is obtained which makes it possible to supply electric power to the assembled battery supervisory device, with a simple arrangement. The arrangement is such that electric power for the assembled battery supervisory device is obtained from a part of storage elements constituting the assembled battery. The cell balancer is driven based on the average consumption electric current of the assembled battery supervisory device so as to suppress a deviation in the amount of charge between those storage elements which supply electric power to the assembled battery supervisory device, and those storage elements which do not supply electric power to the assembled battery supervisory device, resulting from the average consumption electric current of the assembled battery supervisory device.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kensuke Hayashi, Keiichi Enoki, Shingo Yamaguchi, Yoshimasa Nishijima, Yuji Zushi
  • Patent number: 9000717
    Abstract: An electrical charging system having a rectifier which is supplied with energy via an input. An inverter whose alternating voltage side is connected, via phase conductors, to windings of a rotating field machine and whose direct voltage side can be connected to an energy accumulator to be charged. A first current path section passes current, supplied by the rectifier, into the charging system via the plus terminal or pole of the rectifier and the rotating field machine to the inverter. The first current path section passes the current via phase windings of the rotating field machine, such that the first current path section comprises a first switch, which can selectively interrupt the first current path section. The charging system can operate, by the first switch and at least one phase winding in the first current path section, as a step-up and step-down converter in the direction toward an energy accumulator.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 7, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Robert Januschevski, Jurgen Kett
  • Patent number: 8981730
    Abstract: Provided are a switching device for an electric vehicle and a method of controlling the switching device. The switching device includes a switch, a signal selection part, an inverter, and a controller. The switch generates a first or second switching signal according to an operation mode. The signal selection part receives the first or second switching signal, and selects the first or second switching signal according to the operation mode to output the selected switching signal. The inverter performs a direct current/alternating current conversion process on power according to the switching signal output from the signal selection part, and outputs the power. The controller determines the operation mode, and generates a control signal according to the operation mode such that the signal selection part selects the first or second switching signal.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: March 17, 2015
    Assignee: LSIS Co., Ltd.
    Inventors: Chun Suk Yang, Byung Woon Jang
  • Patent number: 8975871
    Abstract: A power management method and an electronic system using the same are provided. The electronic system includes a display device and an auxiliary device, and has dual batteries and two subsystems. By detection and control mechanisms of the subsystems, the electronic system may allow the display device to maintain in a full power state, in the case where the external power is available or the power of the auxiliary device is sufficient. On the other hand, the auxiliary device may apply to the display device, such as a notebook computer, and the battery time may also be extended since the computer has two batteries.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: March 10, 2015
    Assignee: ASUSTeK Computer Inc.
    Inventors: Chih-Wan Hsu, Nung-Te Huang, Yi-Wen Chiu, Hsi-Ho Hsu
  • Patent number: 8975875
    Abstract: A power management system includes a first switch, a second switch, and a controller coupled to the first and second switches. The first switch has a first transfer terminal. The second switch has a second transfer terminal. The controller controls power conversion by turning on a third switch periodically. The first and second transfer terminals and a third transfer terminal of the third switch are coupled to a common node. The resistance between the first transfer terminal and the common node, the resistance between the second transfer terminal and the common node, and the resistance between the third transfer terminal and the common node are substantially equal to zero.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: March 10, 2015
    Assignee: 02Micro, Inc.
    Inventors: Eftimie Caraghiorghiopol, Laszlo Lipcsei, Alexandru Hartular, Marian Niculae
  • Patent number: 8975862
    Abstract: In a power supply apparatus, a power source generates electric power at a predetermined source voltage. The first converter circuit converts the source voltage into a first voltage or a second voltage. The secondary battery is charged with electric power at the first voltage when the first converter circuit outputs electric power at the first voltage. The second converter circuit converts the first voltage of the electric power outputted from the first converter circuit or the secondary battery into the second voltage. The electric load device is supplied with electric power at the second voltage outputted from the second converter circuit. The direct power supply circuit directly supplies electric power at the second voltage outputted from the first converter circuit to the electric load device without passing through the second converter circuit when the first converter circuit outputs the electric power at the second voltage.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: March 10, 2015
    Assignee: Denso Corporation
    Inventors: Fumio Asakura, Kenji Ochi, Hiroshi Yoshida
  • Patent number: 8970161
    Abstract: A modulation control scheme for a series-connected dual active bridge (DAB) DC to DC converter in a maximum power point tracking charge controller used in a photovoltaic system controls operation of the converter in a forward direction power flow mode to control charging of a battery bank with electricity produced by the photovoltaic array. The modulation control scheme is also capable of operating the converter in a reverse direction power flow mode to control the flow of electricity from the battery bank to a DC load. The modulation control scheme divides the converter's operating range in each mode into five main cases of minimum root mean square (M-RMS) operating regions and seven main cases of full zero-voltage switching (F-ZVS) operating regions, as well as transition operating regions between adjacent main cases, based on applicable power level and value of voltage differential.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 3, 2015
    Inventor: Carlos Cuadros
  • Patent number: 8947054
    Abstract: A battery charger is disclosed for use with various batteries, such as automotive and marine-type batteries. In accordance with an aspect of the invention, the charging current is alternated between non-zero DC charging current levels. By alternating the charging current between non-zero DC charging levels, the battery can be charged to a higher capacity (i.e., ampere hours) faster, thus reducing the charging time and at the same time allow the rating of the battery charger to be increased. In accordance with another important aspect of the invention, the technique for alternating the charging current can be implemented in both linear and switched-mode battery chargers.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: February 3, 2015
    Assignee: Schumacher Electric Corporation
    Inventors: Thomas Finis Johnson, John S. Whiting, John F. Waldron
  • Patent number: 8866447
    Abstract: An uninterruptible power supply having efficiency power conversion has an AC to DC power conversion circuit, a battery power conversion circuit and a control circuit. The AC to DC power conversion circuit is parallelly connected to the battery power conversion circuit to convert the AC power of an AC mains into a DC power and supply the DC power to a load. When the AC mains stably supplies power, the control circuit controls to activate the AC to DC power conversion circuit and supply power to the load through the AC to DC power conversion circuit only. As there is only one power conversion between the AC mains and the load, the power conversion efficiency can be enhanced.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: October 21, 2014
    Assignee: Cyber Power Systems Inc.
    Inventor: Jian Wang
  • Patent number: 8810208
    Abstract: The apparatus for charging an energy storage system (ESS) from an AC line voltage includes a boost stage for converting the AC line voltage to a first ESS charging voltage; an isolation stage, coupled to the boost stage, for converting the first ESS charging voltage to a second ESS charging voltage with the second ESS charging voltage less than the first ESS charging voltage, the isolation stage removing a common mode current between the ESS and the boost stage; a configurator, responsive to a control signal, to set a direct communication of the first ESS charging voltage to the ESS in a bypass mode and to open the direct communication of the first ESS charging voltage to the ESS in an isolation mode; and a controller, coupled to the configurator, for setting the modes responsive to a battery voltage, a peak of the AC line voltage, and a total leakage current at an input of the AC line voltage, the controller asserting the control signal to the configurator.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: August 19, 2014
    Assignee: Tesla Motors, Inc.
    Inventors: Jean-Pierre Krauer, Nicholas Robert Kalayjian, Troy A. Nergaard
  • Patent number: 8810207
    Abstract: Communications systems and methods for transmitting communications between a charge system and an AC adapter are disclosed. In one embodiment, a communication system comprises an AC adapter disconnect switch that is switchable between coupling and decoupling an AC adapter DC output voltage to the charge system and a charge controller configured to modulate the AC adapter disconnect switch between coupling and decoupling to provide a communication signal to the AC adapter.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: August 19, 2014
    Assignee: Texas Instruments Incorporated
    Inventors: Brian Ashley Carpenter, David Alexander Grant, Garry Trevor Tomlins, Ben A. Dowlat
  • Patent number: 8810209
    Abstract: A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced. Optionally, an electromagnetic interference filter may be placed between the charge storage components.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 19, 2014
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, George Soliman Mankaruse, Hongwei Liu, Perry Jarmuszewski
  • Patent number: 8779730
    Abstract: A method and a device to discharge cell capacitors in a cell based voltage source converter. Each cell has switching elements in half bridge or full bridge configuration and a capacitor in parallel to the half or full bridge. Each cell has two terminals, whereof at least one is between two switching elements. The converter has AC and DC terminals, with the possibility to connect each of the terminals to ground, via a further switching element. A resistor is implemented into at least one of the ground connections. To discharge to capacitors, the switching elements in the respective cells are configured such, that the capacitor is in parallel connection to the terminals. The capacitors are thus discharged via the resistor to ground.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 15, 2014
    Assignee: ABB Technology AG
    Inventors: Ying Jiang-Häfner, Lars Döfnäs, Erika Siljeström
  • Patent number: 8773065
    Abstract: A charger converting electric power from an external power supply into charging power for a power storage device converts AC power on a power line into charging power for an auxiliary battery. A CHR connects or disconnects a path between the charger and the power storage device. A DC/DC converter converts DC power on a power line connected to a smoothing capacitor into charging power for the auxiliary battery and outputs the power onto a power line. An ECU discharges the smoothing capacitor even if the voltage on the power line is lower than a determination voltage by causing the DC/DC converter to operate to charge the auxiliary battery in a discharging mode where the CHR is set OFF.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Wanleng Ang
  • Patent number: 8773077
    Abstract: A controller for a battery charger that includes a power converter has parametric sensors for providing a sensed Vin signal, a sensed Vout signal and a sensed Iout signal. A battery current regulator (BCR) is coupled to receive the sensed Iout signal and an Iout reference, and outputs a first duty cycle control signal. An input voltage regulator (IVR) receives the sensed Vin signal and a Vin reference. The IVR provides a second duty cycle control signal. A processor receives the sensed Iout signal and utilizes a Maximum Power Point Tracking (MPPT) algorithm, and provides the Vin reference to the IVR. A selection block forwards one of the first and second duty cycle control signals as a duty cycle control signal to the power converter. Dynamic switching between the first and second duty cycle control signals maximizes the power delivered to the battery.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 8, 2014
    Assignees: University of Central Florida Research Foundation, Inc., Advanced Power Electronics Corporation (APECOR Corp.)
    Inventors: John Elmes, Rene Kersten, Michael Pepper
  • Patent number: 8768549
    Abstract: A battery-powered vehicle and a vehicle battery maintenance system that includes a battery charger that monitors energy consumption data from the vehicle battery to generate charging instructions to a charger. A central data unit (CDU) can determine whether if a vehicle electrical load is consuming too much energy and then generate instructions to the vehicle controller to limit the energy consumption. The CDU can notify an offsite central computer if the battery has not been charged according to charging instructions.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: July 1, 2014
    Assignee: Tennant Company
    Inventors: Robert J. Erko, Paul L. Groschen
  • Patent number: 8760125
    Abstract: A power distribution network includes multiple charge storage components and multiple charging circuits to control the charging and discharging of the charge storage components, which may comprise a battery and a supercapacitor. By appropriate arrangement and selection of the storage components, ripple in the power supply voltage, whose propagation to other components relying on the power distribution network may cause an audible buzz, may be significantly reduced. Additionally, appropriate arrangement and selection of the storage components, electromagnetic interference may also be significantly reduced.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: June 24, 2014
    Assignee: BlackBerry Limited
    Inventors: Lizhong Zhu, George Soliman Mankaruse, Michael Stephen Corrigan, Nagula Tharma Sangary
  • Patent number: 8742718
    Abstract: A vehicle is equipped with a main battery, an auxiliary machinery battery, a high-capacitance DC/DC converter which converts power on an electric path between the main battery and a motor-generator for traveling to supply the converted power to the auxiliary machinery battery, a low-capacitance sub power supply which converts power on an electric path between the main battery and an external power supply to supply the converted power to the auxiliary machinery battery, and a control device which controls the sub power supply. The control device determines whether or not the DC/DC converter has an abnormality, and operates the sub power supply to perform precharging when it is determined that the DC/DC converter is abnormal. An auxiliary machinery battery voltage V2 when precharging has been performed is set to a value which is higher by a predetermined voltage a than an auxiliary machinery battery voltage V1 when precharging has not been performed.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: June 3, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinobu Sugiyama, Wanleng Ang
  • Patent number: 8716980
    Abstract: An electronic device includes a secondary battery having at least one bare cell, the secondary battery including a charge/discharge switching module for placing the secondary battery in one of a charging state for charging the at least one bare cell or a discharging state for discharging the at least one bare cell; and an analog front end for generating an analog signal based on information of the secondary battery and for transmitting the analog signal out of the secondary battery; and a processor external to the secondary battery for receiving the analog signal from the analog front end and for controlling the charge/discharge switching module in accordance with the analog signal.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: May 6, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Sungbin Lim
  • Patent number: 8704494
    Abstract: An energy harvesting circuit harvests energy from a voltage source and charges a storage element with the harvested energy. The energy harvesting circuit includes an energy source, a storage capacitor to store energy output from the energy source, a power converter circuit, an energy storage element, and an enabling circuit. The enabling circuit turns the boost converter circuit on and off according to a monitored capacitance voltage of the storage capacitor. When the boost converter circuit is turned off, the storage capacitor accumulates energy output from the energy source until a reference voltage is reached, whereupon the boost converter circuit is turned on, enabling current flow from the storage capacitor to the storage element. When the storage capacitor discharges to a minimum voltage level, the boost converter circuit is turned off. The enabling circuit and a reference voltage supply are powered by the energy source.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 22, 2014
    Assignee: Maxim Integrated Products, Inc.
    Inventor: James Jason LoCascio
  • Patent number: 8692519
    Abstract: Apparatus and method for battery calibration and state of charge determination (SoC) within battery packs by detecting charge levels in a cell or cells, sending the charge level information to a controller which controls the movement of charge in the battery wherein, the controller initiates the discharge of a sub-unit to a predetermined level into the other sub-units and the charging of said sub-unit in the battery to a predetermined level from the charge held on the other sub-units to improve the accuracy and reliability of battery calibration and provide an accurate State of Charge indication from battery first use to end of life.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: April 8, 2014
    Assignee: TWS Total Produtos (Commercial Offshore de Macau) Limitada
    Inventor: Mark Wayne Huggins
  • Publication number: 20140077770
    Abstract: A power factor correction circuit controlling device has a power factor correction circuit that is connected to an AC power supply, and brings a waveform of an input current from the AC power supply close to a sine wave to correct a power factor by an on/off operation of a switching element, and a controller that controls an operation of the power factor correction circuit. The power factor correction circuit includes a current detection circuit that detects the input current, and a voltage detection circuit that detects the output voltage at the power factor correction circuit.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.
    Inventors: Yasumichi Omoto, Yoshihiro Ikushima, Yusaku Ido