With Voltage Compensation Patents (Class 320/143)
  • Patent number: 10784852
    Abstract: A pulse generator has a galvanically isolated output, in particular for a consumption meter. A control output of a control unit of the pulse generator is coupled to an input of an opto-isolator of the pulse generator in order to output at the output of the opto-isolator an output current controlled by the control unit. The opto-isolator is connected to a field-effect transistor in such a way that the output current from the opto-isolator charges a capacitor via a rectifying component, which blocks the capacitor from discharging via the opto-isolator. The voltage drop across the capacitor is the gate voltage of the field-effect transistor. The field-effect transistor switches the output of the pulse generator directly or indirectly.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 22, 2020
    Assignee: Diehl Metering GmbH
    Inventor: Stefan Nickl
  • Patent number: 10714963
    Abstract: Provided are a charging system, charging method, and device, said charging system comprising a battery; a first rectifier, configured to output a first voltage with a first pulsating waveform; a switch unit, configured to modulate the first voltage; a transformer, configured to output a second voltage with a second pulsating waveform; a second rectifier, configured to output a third voltage with a third pulsating waveform, and the third voltage is configured to be applied to the battery charge the battery; a first current sampling circuit, configured to sample current to obtain a current sampling value; and a control unit configured to output the control signal to the switch unit, adjust the amplification factor of the operational amplifier, and adjust a duty ratio of the control signal according to the current sampling value, such that the third voltage meets a charging requirement of the battery.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 14, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen Tian, Jialiang Zhang
  • Patent number: 10644530
    Abstract: Provided are a charging system, charging method, and device, said charging system comprising a battery; a first rectifier, configured to output a first voltage with a first pulsating waveform; a switch unit, configured to modulate the first voltage; a transformer, configured to output a second voltage with a second pulsating waveform; a second rectifier, configured to output a third voltage with a third pulsating waveform, and the third voltage is configured to be applied to the battery charge the battery; a first current sampling circuit, configured to sample current to obtain a current sampling value; and a control unit configured to output the control signal to the switch unit, adjust the amplification factor of the operational amplifier, and adjust a duty ratio of the control signal according to the current sampling value, such that the third voltage meets a charging requirement of the battery.
    Type: Grant
    Filed: January 7, 2017
    Date of Patent: May 5, 2020
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Chen Tian, Jialiang Zhang
  • Patent number: 9966776
    Abstract: An electrical arrangement includes a high-voltage battery and a number of electrical utility arrangements connected to the battery via a main switch and a downstream back-up capacitor. A discharge circuit is connected to the capacitor and has a discharge path with an ohmic discharge resistor. In normal mode no current flows in the discharge resistor. Opening the main switch effects a transition from normal mode to special mode, while the discharge path is energized and electrical energy stored in the capacitor is converted into thermal energy by the discharge resistor. The discharge circuit has a voltage converter between the high-voltage side of the capacitor and the discharge path. The voltage converter has a first semiconductor switch for discharging the capacitor clock-controlled such that an electrical output voltage at the discharge path constantly has a rated value so long as a capacitor voltage at the capacitor is above the rated value.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 8, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Wilhelm Berg, Tobias Pröll
  • Patent number: 9871390
    Abstract: A battery protection IC applied to a battery charging system is provided, where the battery charging system includes a charger and a switch, the switch is coupled between the charger and a battery when the battery is put into the battery charging system, and the battery protection IC includes a voltage divider, a comparator and a controller. The voltage divider is coupled to a first node of the switch, and is utilized for dividing a voltage of the first node to generate a divided voltage, whereat least one resistor of the voltage divider is formed by two different types of fuses. The comparator is utilized for comparing the voltage with a reference voltage to generate a comparison result. The controller is utilized for generating a control signal according to the comparison result, where the control signal is utilized for switching on or switching off the switch.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: January 16, 2018
    Assignee: Silergy Corp.
    Inventor: Chien-Han Wu
  • Patent number: 9866121
    Abstract: The invention relates to an apparatus and method for tracking energy consumption. An energy tracking system comprises at least one switching element, at least one inductor and a control block to keep the output voltage at a pre-selected level. The switching elements are configured to apply the source of energy to the inductors. The control block compares the output voltage of the energy tracking system to a reference value and controls the switching of the switched elements in order to transfer energy for the primary voltage into a secondary voltage at the output of the energy tracking system. The electronic device further comprises an ON-time and OFF-time generator and an accumulator wherein the control block is coupled to receive a signal from the ON-time and OFF-time generator and generates switching signals for the at least one switching element in the form of ON-time pulses with a constant width ON-time.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: January 9, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Horst Diewald, Johann Zipperer, Peter Weber, Anton Brauchle
  • Patent number: 9728989
    Abstract: Methods and apparatus for charging a battery in an electronic device In one exemplary method for charging the battery in the electronic device includes detecting a charging input from a plurality of external devices, and when detecting the charging input, charging the battery with power supplied from the external devices using a plurality of charging modules.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: August 8, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Soo-Hyung Kim
  • Patent number: 9419448
    Abstract: The novel cell balancing approach being disclosed minimizes the number of controlled active devices to enable Li-ion cell balancing in a battery arrangement. This is accomplished through a network of passive components associated with each cell. The network of passive components forms a bandpass filter. This allows selective charging of a cell purely based on the frequency components of a variable switching frequency controller.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: August 16, 2016
    Assignee: Cree Fayetteville, Inc.
    Inventors: Edgar Cilio, Washington Cilio
  • Patent number: 9270136
    Abstract: A charging control circuit includes a charging module, a switch element, a load detecting element, and an adjusting element. According to the power consumption of a chargeable battery of an electronic device, the load detecting element issues a load range signal. According to the load range signal, the adjusting element issues a control voltage to the switch element. According to the control voltage, the switch element is turned on, and the magnitude of a control current from the switch element is correspondingly adjusted. By the charging module, a charging current corresponding to the control current is provided to charge the chargeable battery. Consequently, the magnitude of the charging current is controlled according to the operating situation of the electronic device, and the charging speed is changed.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: February 23, 2016
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Tsung-Wen Hsueh, Yi-Guang Chen, Yu Yen Shih
  • 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: 8766566
    Abstract: A battery temperature rise causing system has a converting unit for converting voltage of electric power held in one of a rechargeable battery and an accumulator and applies the converted voltage to the other one, and a control unit controlling the converting unit to alternately perform first transfer of electric power from the battery to the accumulator and second transfer of electric power from the accumulator to the battery while changing the first transfer for the second transfer each time the battery voltage reaches a lower limit and changing the second transfer for the first transfer each time the battery voltage reaches an upper limit, and to increase temperature of the battery due to heat generated by electric current flowing through the battery during the electric power transfer.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: July 1, 2014
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Hiroyasu Baba, Kunio Iritani, Masao Tokunaga
  • Patent number: 8698458
    Abstract: A method of charging a battery pack, the battery pack including at least one battery cell. The method includes comparing a battery cell voltage to a first voltage; comparing the battery cell voltage to a second voltage that is greater than the first voltage; and controlling a current amplifying unit coupled to the at least one battery cell to amplify a current from a charger to the at least one battery cell if the battery cell voltage is between the first voltage and the second voltage.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: April 15, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Youngu Kim
  • Patent number: 8482229
    Abstract: The present invention relates to a method for charging accumulation means via an external electrical network via at least a first (A) and a second (B) switching arm respectively comprising two switches (12), said method comprising a step for controlling the switches (12) of the switching arms (A, B) by transmission of pulse width modulation control signals, characterized in that the switches (12) of the second switching arm (B) are controlled by adapting the pulse width of the control signals so as to generate an alternating voltage (Vx) in phase opposition relative to the voltage at the terminals of a compensation inductance (7?) connected on the one hand to the second arm (B) and on the other hand to the neutral (N) of said network, so that the voltage (VN) between the neutral (N) of said network and ground is a direct voltage. The invention also relates to a charging device for implementing such a charging method.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: July 9, 2013
    Assignee: Valeo Systemes de Controle Moteur
    Inventors: Boris Bouchez, Luis De Sousa
  • Patent number: 8138723
    Abstract: In a remote battery charging system comprising a charging circuit there is always a voltage loss due to inherent resistances in the system from such things as connectors and conductors. These resistances create voltages losses in the system such that charging time are increased substantially. The present invention compensates for voltage losses on the system by generating a dynamic adjustment voltage over the charging period. A voltage translator circuit is used to measure charging circuit output voltage and current over a plurality of incremental time periods during the charging period an calculate a signal proportional to changes in output voltage and current over the incremental time period. The signal is then applied to the charging circuit to offset any voltage losses.
    Type: Grant
    Filed: May 26, 2008
    Date of Patent: March 20, 2012
    Inventor: Steve Carkner
  • Patent number: 8022675
    Abstract: A method and a circuit for detecting the state of supply of a load by a variable voltage, including measuring the difference between values representative of the variable supply voltage and of a voltage across the load.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 20, 2011
    Assignee: STMicroelectronics S.A.
    Inventor: Laurent Moidron
  • Patent number: 8004248
    Abstract: Various systems and methods for battery charging are disclosed herein. As just one example, a battery charger is disclosed that includes a current feedback loop that has a pulse width modulated current control output, and a voltage feedback loop that has a pulse width modulated voltage control output. In addition, the battery charger includes a transition circuit with a digital phase/frequency detector. The digital phase/frequency detector is operable to detect a duty cycle difference between the pulse width modulated current control output and the pulse width modulated voltage control output. Further, the transition circuit is operable to transition between application of a substantially current charge control to a charging node to application of a substantially constant voltage to the charging node based at least in part on the difference in duty cycle.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: August 23, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Valerian Mayega, Percy E. Neyra, Brett E. Smith
  • Patent number: 7602151
    Abstract: A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The voltage of the DC source is elevated by a transformer and used to charge a battery via the output interface. The charge controller can further increase the voltage of the output interface in order to accelerate battery charging. The compensator compensates the voltage wasted by the circuit. Therefore, the invention can overcome energy waste caused by the internal resistance in the circuit, achieving satisfactory charging effects.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: October 13, 2009
    Assignee: Asian Power Devices Inc.
    Inventors: Yu-Chi Lai, Sheng-Fa Chi
  • Patent number: 7504803
    Abstract: A charging method and device for a rechargeable battery to make more stable and faster full charging possible. One embodiment of a charging method for the rechargeable battery includes charging the battery by applying a constant current, and then charging the battery by applying a constant current pulse having uniform pulse width. The charging method further includes charging the battery by applying or interrupting the constant current and then applying the dynamic constant current pulse based on a voltage across terminals of the battery.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: March 17, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Kyu-Woong Cho
  • Patent number: 7477041
    Abstract: The battery charging method uses a pulsed current alternately taking first and second amplitudes during first and second periods (t1, t2). At least one of the parameters, amplitude and duration, of the current during the first period (t1) is automatically servo-controlled as a function of a first value of the slope (P1) of the voltage (U), measured at the terminals of the battery to be charged. The first slope value (P1) is calculated at least at the end of the first period (t1). Likewise, a second value of the slope (P2) of the voltage (U) can be calculated at least at the end of the second period (t2) and at least one of the parameters of the current during the second period (t2) can be automatically servo-controlled as a function of the second slope value (P2). The different parameters of the pulsed charging current are thus continuously servo-controlled as a function of the voltage slope to keep the slope (P) within a range comprised between 1 mV/s and 6 mV/s.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: January 13, 2009
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Murielle Le Gall, Daniel Benchetrite, Olivier Bach
  • Patent number: 7339354
    Abstract: A method and an apparatus for charging a lithium-ion based rechargeable battery in a short time is provided.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: March 4, 2008
    Assignee: Sony Corporation
    Inventor: Akira Sanpei
  • Publication number: 20030111980
    Abstract: The present invention provides a battery charger of mobile phone capable of charging a battery rapidly and fully, by charging the battery rapidly with pulse up to a predetermined level of the charging capacity of the battery, and then by charging with constant voltage until the battery is fully charged, and a charging method for the same; the battery charger comprising: a main control means, which controls pulse voltage charging and constant voltage charging based on the charging state of the battery; a constant voltage charging control means, which controls charging of the battery with constant voltage under control of the above main control means; a pulse charging control means, which detects charging voltage of the battery and controls charging of the battery with pulse voltage based on the detected charging voltage under control of the above main control means; and a charging means, which charges the battery by outputting pulse voltage or constant voltage after DC power has been applied under control of t
    Type: Application
    Filed: December 19, 2002
    Publication date: June 19, 2003
    Applicant: SK Teletech Co., Ltd.
    Inventor: Seung-Won Lee
  • Patent number: 6344733
    Abstract: A battery pack includes a lead-acid battery and a charger port and an electronic switch connected between the two, the switch being controlled by a microcontroller which is connected to each of the battery and the charger port for separately monitoring the voltages thereat.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: February 5, 2002
    Assignee: Snap-on Technologies, Inc.
    Inventors: Matthew M. Crass, Robert W. Iverson
  • Patent number: 6286109
    Abstract: A method and apparatus for controlling heat generation within a battery-powered portable computer. One aspect is directed to a computer including a battery, a battery charging circuit operatively connected to the battery to charge the battery at a charging rate, and a temperature detection and control circuit, coupled to the battery charging circuit, that detects a temperature within the computer and provides a control signal to the battery charging circuit having a control value based on the temperature detected. The battery charging circuit is responsive to the control value of the control signal to alter the charging rate. Another aspect is directed to a method for controlling heat dissipation within a portable electronic device having a battery and a battery charging circuit.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: September 4, 2001
    Assignee: Digital Equipment Corporation
    Inventor: Scott L. Pirdy
  • Patent number: 5929606
    Abstract: A universal battery pack which contains an integral DC-DC switching power converter, with an asymmetric ripple-suppression topology which suppresses ripple at the power output terminals during discharging.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: July 27, 1999
    Assignee: Compaq Computer Corporation
    Inventor: Richard A. Faulk
  • Patent number: 5861733
    Abstract: In a battery charger in which an output voltage and an output current from the battery charger are compared with a reference voltage, respectively, and an error voltage is fed back, so that, in an initial charging period, constant-current charging is performed and, after a battery voltage reaches a constant value, constant-voltage charging is performed, an adder 11 for adding a voltage Vg which is proportional to a charging current of a battery 9, to the reference voltage Vr which is to be compared with the output voltage of the battery charger 20 is disposed, and the output voltage V of the battery charger 20 is controlled while feeding back an error voltage obtained as a result of a comparison of the added value output from the adder 11 with the output voltage V of the battery charger 20.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 19, 1999
    Assignee: Kyocera Corporation
    Inventor: Shozo Yoshikawa