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| Number | Title | Issue Date |
| 8179100 | Battery charger using the phase shift by a pair of forward converting circuits A technique for dynamically adjusting an output voltage of forward converter circuits for a battery charging operation is provided. The technique allows for varying voltage at the charging battery by manipulating the duty cycles of two forward converter circuits. Me... | 05/15/2012 |
| 8148949 | Use of high frequency transformer to charge HEV batteries A system for charging a high voltage battery includes a low DC voltage battery, a DC-to-AC converting circuit, a controller, an AC-to-DC converting circuit and a high DC voltage battery. The low voltage battery outputs a low DC voltage signal. The DC-to-AC convertin... | 04/03/2012 |
| 8143863 | Circuits and methods for controlling a current flowing through a battery A circuit for controlling a current flowing through a battery includes a driver and a filter coupled to the driver. The driver can generate a pulse signal in a first operating mode and generate a first signal in a second operating mode to control the current through... | 03/27/2012 |
| 8143862 | Circuits and methods for battery charging A circuit for charging a battery pack includes a power converter and a charger controller. The power converter is operable for receiving an input power, and for providing a charging power for charging the battery pack. The power converter provides galvanic isolation... | 03/27/2012 |
| 8093866 | Method for managing charging of a rechargeable battery The management method comprises a charging phase and may comprise an optional prior phase of estimating the state of charge of the battery. Comparison of the absolute value of the slope of the voltage at the battery terminals with a full-charge threshold at the end ... | 01/10/2012 |
| 8004248 | Systems and methods for multi-mode battery charging 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 wid... | 08/23/2011 |
| 7969120 | Method for calculating power capability of battery packs using advanced cell model predictive techniques The present invention relates to a method and an apparatus for estimating discharge and charge power of battery applications, including battery packs used in Hybrid Electric Vehicles (HEV) and Electric Vehicles (EV). One charge/discharge power estimating method inco... | 06/28/2011 |
| 7872451 | Apparatus for charging on-vehicle battery and apparatus for controlling generating operation of on-vehicle generator An on-vehicle charging apparatus charges a battery mounted on the vehicle. In the apparatus, a generator generates electric power to output voltage for charging the battery and a controller, which is located outside the generator, outputs a pulse signal for controll... | 01/18/2011 |
| 7804278 | Topology and method for dynamic charging current allocation In one embodiment, a battery management system includes a charger controller for controlling a charging current of a battery according to a status of a load which is powered by the battery, and a counter coupled to the charger controller for determining a charging t... | 09/28/2010 |
| 7786702 | Battery conditioner and charger An apparatus for charging either a normal or a sulfated type of a storage battery includes a first charging stage, a second charging stage, and a final third charging stage. The first charging stage applies a pulsed voltage with a high peak and average voltage to th... | 08/31/2010 |
| 7755328 | Charging circuit An exemplary charging circuit (200) includes for charging a load component (210) includes a power supply unit (220), a feedback circuit, and a sampling resistor (230). The power supply unit includes a pulse width modulation circuit (22... | 07/13/2010 |
| 7602151 | Charger with output voltage compensation 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 ... | 10/13/2009 |
| 7545120 | AC-DC adapter and battery charger integration for portable information handling systems In a method and system for converting an alternating current (AC) input to a direct current (DC) output, an AC-DC adapter includes a rectifier module operable to receive the AC input and generate a first DC output. The AC-DC adapter includes a buck converter module ... | 06/09/2009 |
| 7528579 | System and method for charging batteries A high frequency battery charger includes a converter, drive logic, and control logic. The converter transforms a DC voltage into a high frequency AC voltage. The drive logic controls a conversion of the high frequency AC voltage through a train of pulses. The contr... | 05/05/2009 |
| 7477041 | Battery charging method 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 aut... | 01/13/2009 |
| 7425815 | Modulation charging circuitry for battery charging Circuitry for charging a battery includes a switch for coupling the power source to the battery. The switch is turned on and off in accordance with a periodic control signal including a plurality of periods. Each period includes a first duration during which the con... | 09/16/2008 |
| 7394225 | Pseudo constant current multiple cell battery charger configured with a parallel topology A multiple cell battery charger configured in a parallel topology provides constant current charging. The multiple cell battery charger requires fewer active components than known serial battery chargers, while at the same time preventing a thermal runaway condition... | 07/01/2008 |
| 7388348 | Portable solar energy system The portable solar energy system stores electrical energy generated by a solar panel, which is made of an array of photovoltaic cells, in a dc storage battery, and upon demand converts the dc voltage of the battery to an ac output suitable for supplying conventional... | 06/17/2008 |
| 7363175 | Query based electronic battery tester An electronic battery tester for testing a storage battery provides a test output indicative of a condition of the battery. Electronic measurement circuitry provides a measurement output related to a condition of the battery. The battery condition is determined base... | 04/22/2008 |
| 7358701 | Method and system for modeling energy transfer A method and system for modeling or simulating an application environment so as to evaluate the effect of a selected battery and charger in the application environment. Sensors are used to gather data regarding the energy consumption needs of the application environ... | 04/15/2008 |
| 7348760 | Power management topologies A wake up circuit according to one embodiment includes a comparison circuit and an output decision circuit. The comparison circuit may be adapted to receive a first signal representative of a charging current level provided to a battery via a path and a second signa... | 03/25/2008 |
| 7339354 | Rechargeable battery charging method and apparatus A method and an apparatus for charging a lithium-ion based rechargeable battery in a short time is provided. A terminal voltage of the rechargeable battery is compared with a predetermined first set voltage V1 while charging the rechargeable battery with a co... | 03/04/2008 |
| 7332890 | Autonomous robot auto-docking and energy management systems and methods A method for energy management in a robotic device includes providing a base station for mating with the robotic device, determining a quantity of energy stored in an energy storage unit of the robotic device, and performing a predetermined task based at least in pa... | 02/19/2008 |
| 7327121 | Charger having output voltage regulating function A charger for a motorized tool includes a filter circuit, a rectifier circuit, a pulse width modulation (PWN) circuit, a transformer circuit, and a sensing circuit. Thus, the sensing circuit captures partial of the output voltage to compare with a reference voltage ... | 02/05/2008 |
| 7319304 | Shunt connection to a PCB of an energy management system employed in an automotive vehicle A method of coupling a shunt to a printed circuit board (PCB) of an energy management system is provided. The method includes coupling flexible electrical connectors to the shunt and soldering the flexible electrical connectors to connection points on the PCB of the... | 01/15/2008 |
| 7312596 | Device and method for equalising the charge of serially connected capacitors belonging to a double layer capacitor A device and a method are provided for equalizing the charge of the capacitors belonging to a double layer capacitor. The device includes an individual transformer associated with each individual capacitor and a flyback transformer or a spool, from which the energy ... | 12/25/2007 |
| 7310048 | Method and apparatus for sensing a current in a circuit Techniques are disclosed to sense a current in a circuit. For instance, current sense circuit according to the teachings of the present invention includes a current sense resistor coupled to an input of the current sense circuit. The current sense resistor is couple... | 12/18/2007 |
| 7301307 | Method and apparatus to charge a battery using determination of battery load current By determining charging current Ichar and then subsequently utilising that determination of charging current Ichar in relation to battery current Ibat and load current Iload as a result of operation of a phone or other ele... | 11/27/2007 |
| 7298114 | Nickel hydrogen/nickel cadmium battery charger with the function of emergency power supply A NiH/NiCd (nickel hydrogen/nickel cadmium) battery charger with the function of emergency power supply unit having a main body with a charging chamber and a charging circuit positioned within the main body to allow an electric connection to the charging chamber and... | 11/20/2007 |
| 7295936 | Electronic battery tester with relative test output An electronic battery tester for testing a storage battery determines a condition of the battery. The condition is a relative condition and is a function of a dynamic parameter of the battery and an empirical input variable. ... | 11/13/2007 |
| 7274171 | Charging circuit for secondary battery A charging circuit for a secondary battery includes a constant-voltage circuit part outputting one of a plurality of predetermined constant voltages and charges the secondary battery by applying the constant voltage thereto, a detection circuit part detecting a batt... | 09/25/2007 |
| 7268520 | Sense amplifier for use with wake-up charging current A sense amplifier adapted to amplify a voltage signal representative of a charging current provided to a rechargeable battery. The sense amplifier may include a p-type input sense amplifier and an n-type input sense amplifier, The p-type input sense amplifier may be... | 09/11/2007 |
| 7253589 | Dual-source CMOS battery charger A circuit for charging a battery by selecting among two available power sources while providing overcharging and temperature protection to the battery and managing a charging current is described. A power pass and sense circuit is arranged to provide charge voltage ... | 08/07/2007 |
| 7246015 | Alternator tester An alternator tester is provided for testing an alternator of a vehicle while the alternator is coupled to the vehicle. A sensor is configured to couple to the vehicle and sense a signal related to operation of the alternator. A memory contains data related to opera... | 07/17/2007 |
| 7245109 | Temperature sensitive power converter The present invention provides a power converter for recreational vehicle (RV) batteries that uses time and ambient temperature to control output voltage. By employing a remote temperature sensor attached to the battery post, temperature information is sent to an ou... | 07/17/2007 |
| 7235955 | Method and apparatus for preventing boosting system bus when charging a battery A controllably alternating buck mode DC-DC converter conducts cycle by cycle analysis of the direction of inductor current flow to decide whether to operate in synchronous buck mode or standard buck mode for the next successive cycle. For each cycle of the PWM wavef... | 06/26/2007 |
| 7227337 | Battery charger with dual use microprocessor A battery charger with a discrete switched regulator provides relatively high efficiency and relatively low cost. Unlike known battery chargers which incorporate switched regulator ICs, the battery charger in accordance with the present invention utilizes the microp... | 06/05/2007 |
| 7218076 | Battery charging system A battery charging system comprising: a current source; a battery; and a voltage and current regulator, which regulates voltage applied to the battery and current supplied to the battery. The battery charging system shapes the current supplied to the battery, and ma... | 05/15/2007 |
| 7208915 | Constant-current battery charger A constant-current battery charger includes a power supply for supplying a charge current to a secondary cell, and a current monitor for monitoring a charge current being supplied to the cell. A controller is included for varying the charge current in accordance wit... | 04/24/2007 |
| 7203048 | DC to DC controller with inrush current protection A DC to DC controller for controlling an inrush current from a DC to DC converter to a battery system having an internal isolating switch. The DC to DC controller is configured to control the DC to DC converter based on a state of the internal isolating switch. If t... | 04/10/2007 |
