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| Number | Title | Issue Date |
| 7940028 | Thermal energy transfer system for a power source utilizing both metal-air and non-metal-air battery packs A power source comprised of a metal-air battery pack and a non-metal-air battery pack is provided, wherein thermal energy from the metal-air battery pack is used to heat the non-metal-air battery pack. In one aspect, a thermal energy transfer system is provided that... | 05/10/2011 |
| 7719238 | System for controlling charge/discharge of secondary battery, and battery controller In a charging/discharging control system for controlling an allowable power level of a secondary battery at the time of charging/discharging operations, excessive discharging or recharging of the secondary battery is prevented, and excessive suppression of the charg... | 05/18/2010 |
| 7429436 | Method for determining state of charge of lead-acid batteries of various specific gravities In accordance with various embodiments, there is a method for determining the state of charge of a battery. Various embodiments include the steps of determining the specific gravity of the battery and measuring an open circuit voltage of the battery at rest. The ope... | 09/30/2008 |
| 7417406 | Electronic apparatus that determines a characteristic of a battery An electronic apparatus which detects when a battery having a different characteristic is mixed in a plurality of batteries accommodated therein. An average voltage V1 per battery of plural batteries connected in series and an average voltage V2 per ba... | 08/26/2008 |
| 7402982 | Energy storage type feeder voltage compensation apparatus and method of controlling feeder voltage An energy saving type feeder voltage compensation apparatus improved in availability at low temperatures, wherein when a secondary battery is lower in temperature than a predetermined value, an output voltage output to a feeder side is made equal to or higher than a... | 07/22/2008 |
| 7358704 | Critical state estimation system and method for secondary cells For estimation of a critical state of a performance under a working condition of a secondary cell, in consideration of an internal resistance of the cell, a variable data provider provides variable data on the performance, including a first data on a variant of the ... | 04/15/2008 |
| 7327122 | Battery heating circuit A battery delivers its rated capacity when the battery is below a temperature when the available battery capacity is limited. The battery includes a heating element, a temperature sensor, and a switch operatively connected to the heating element and temperature sens... | 02/05/2008 |
| 7285936 | Charging system for battery-set An object is to provide a charging system in which a battery can be charged in a fully charged state or close to the fully charged state while preventing performance deterioration of a battery due to heat generated during charge. A charging system 1 for a bat... | 10/23/2007 |
| 7144646 | Method and apparatus for multiple mode control of voltage from a fuel cell system A fuel cell system determines each of a battery charging current error, a battery voltage error, and a stack current error. The fuel cell system regulates current through a series pass element in response to a greater of the determined errors. Thus, the fuel cell sy... | 12/05/2006 |
| 7129675 | System and method for battery charging A method for charging a lead acid storage battery to advantageously extend its life is described. The termination of a charging process is based upon an evaluation of the first derivative (dv/dt) and second derivative (d2v/dt2) of the applied charging voltage. By ut... | 10/31/2006 |
| 7106027 | Battery changers Battery pack (50) may include rechargeable batteries (55) and first temperature sensor TM1 for detecting the temperature of batteries (55). Battery charger (10) may include power source circuit (32) for supplying charging cu... | 09/12/2006 |
| 7098666 | Method and system for battery state of charge estimation by using measured changes in voltage A method (20 or 30) and system (40) for estimating a battery state of charge can include a memory (48) for storing at least one among an impedance value, a plurality of values for V drop 0-1, or a plurality of values for V d... | 08/29/2006 |
| 7061209 | Battery chargers Battery pack (10) may include rechargeable battery cells (12). Battery charger (20) may include power source circuit (100). Power source circuit (100) may be connected with an external power source and battery cells (12). Th... | 06/13/2006 |
| 7030592 | Battery charger amusement device A battery charger amusement has a receptacle adapted to receive a rechargeable battery and an electronic circuit communicating information stored within the device that is independent of charge status. The battery charger can include a motion actuator so as to move ... | 04/18/2006 |
| 7019494 | Methods of charging lithium sulfur cells Disclosed is a method of charging a lithium-sulfur electrochemical cell wherein the lithium-sulfur cell comprises a cathode comprising an electroactive sulfur-containing material, an anode comprising lithium, and a nonaqueous electrolyte. ... | 03/28/2006 |
| 7012407 | Charging and discharging control circuit and charging type power supply unit The invention provides: a charging and discharging control circuit which includes a charging and discharging control terminal having a test function as well and which is capable of conducting switch over among a normal application state, a charging and discharging p... | 03/14/2006 |
| 6954051 | Battery charger and charging method The charging method includes the steps of charging a battery pack, sensing voltage of the battery pack, calculating voltage change rate, detecting a first inflection point based on the voltage change rate so long as a voltage step is not detected, detecting a second... | 10/11/2005 |
| 6928381 | Battery overtemperature control system and method A control system and method for a battery charger. The system includes a processor that receives inputs from a battery current sensor and temperature sensors within the batteries. The processor terminates and resumes charging in response to measured battery temperat... | 08/09/2005 |
| 6904342 | Control apparatus for energy storage device in motor vehicle A control apparatus for use in a vehicle for controlling an energy storage device adapted to discharge electric power that varies with a temperature is provided. The control apparatus includes a temperature sensor that measures a temperature associated with the ener... | 06/07/2005 |
| 6791300 | Battery charger and charging method The charging method includes the steps of charging a battery pack, sensing voltage of the battery pack, calculating voltage change rate, detecting a first inflection point based on the voltage change rate so long as a voltage step is not detected, detecting a second... | 09/14/2004 |
| 6603288 | Battery chargers and charging methods A battery charger and a charging method capable of charging a battery are described. The current temperature of the battery is detected (in step S12) and a battery temperature increase rate is calculated based upon the detected temperature (in step S14). ... | 08/05/2003 |
| 6388427 | Battery temperature derivative charging A method of charging a nickel-hydrogen battery which includes a positive electrode, a negative electrode and an electrolyte, after the battery has been subject to discharge is disclosed the method comprising the steps of: (a) subjecting the battery to a h... | 05/14/2002 |
| 6373228 | Battery charging device Rotation of an air-blowing motor is continued also upon completion of charge; by retrieving a presumed temperature for cooling and upon detecting that a measured temperature is higher than the presumed temperature for cooling by not less than a specified ... | 04/16/2002 |
| 6313605 | Battery charger and method of charging nickel based batteries A method of charging a rechargeable battery which comprises charging the battery with a charging current; sampling conditions of the battery during charging to recognize potential adverse conditions within the battery; interrupting the charging current pe... | 11/06/2001 |
| 6165646 | Solid state rechargeable lithium battery, stacking battery, and charging method of same A solid-state secondary lithium battery with excellent charge and discharge cycle characteristics, using a negative electrode active material which shows discontinuous change of potential caused by the lithium ion insertion and extraction reactions, where... | 12/26/2000 |
| 6034510 | Secondary battery charge control device and method of using the same The voltage of each of battery block of a battery is detected by a voltage sensor. Further, the temperature of the battery is detected by a temperature sensor. These detected values are supplied to a detecting section of a battery ECU. A judging section r... | 03/07/2000 |
| 6008628 | Method for charging batteries A method for charging and monitoring a rechargeable battery is proposed. The charging method includes charging a rechargeable battery, sensing temperature of said battery, and calculating temperature change rate. The method further includes sensing voltag... | 12/28/1999 |
| 5912547 | Battery charging method and apparatus with thermal mass equalization A battery charging method in an environment of variable temperatures provides for a temperature correction to determine an onset of an overcharge phase which is detected by a discernible thermal energy output of a charging battery. The method comprises a ... | 06/15/1999 |
| 5900718 | Battery charger and method of charging batteries A battery charger and method of charging a rechargeable battery which comprises charging the battery with an initial charging current and measuring and comparing the charging temperature to an initial temperature to identify a temperature factor which eit... | 05/04/1999 |
| 5864224 | Method for charging secondary battery and charger therefor The present invention provides a method for charging a secondary battery and a charger by which it can be prevented that a secondary battery is charged at very high or low temperature, and that the secondary battery is charged for a long time. Therefore, ... | 01/26/1999 |
| 5747970 | Battery charger charging time control A circuit (103) for charging a battery (101) is connected to an input (126) for inputting a signal indicative of a temperature of the battery. A switch (108) selectively supplies power to the battery under the control of a control signal. A microcontrolle... | 05/05/1998 |
| 5744933 | Vending machine for charging a secondary battery of a mobile phone A vending machine for charging a secondary battery of a mobile phone is provided with a plurality of charging blocks, each conforming to a specification of a mobile phone and a secondary battery of the mobile phone, for charging plural kinds of secondary ... | 04/28/1998 |
| 5729116 | Shunt recognition in lithium batteries An apparatus and method of recognizing a shunt caused by formation of dendrites in a rechargeable lithium battery which comprises charging the battery with a charging current, sampling the charging current voltage of the battery at pre-determined time int... | 03/17/1998 |
| 5703465 | Method and apparatus for controlling the charging of a secondary battery using the primary differential of the battery voltage A secondary battery is charged with a large current after a time when a voltage across the secondary battery becomes equal to or greater than a decision value while the secondary battery is being charged, until a primary differential of the voltage reache... | 12/30/1997 |
| 5686808 | Universal battery charger and method Apparatus for charging a battery includes a charger main body having a docking station with a docking bed and programmable electronics, which includes an array of programming contacts exposed at the docking bed, and a docking tray mountable on the docking... | 11/11/1997 |
| 5686815 | Method and apparatus for controlling the charging of a rechargeable battery to ensure that full charge is achieved without damaging the battery In order to optimally control the charging of a rechargeable battery of one or more cells to ensure that full and rapid charge is achieved without damaging the battery, a maximum safe value (or sequence of values during the charging process) for one or mo... | 11/11/1997 |
| 5644209 | Method and device for monitoring and for dynamically balancing a storage battery pack A method and device for monitoring and balancing individual batteries in a pack. The terminals of each battery, which are connected in series, is connected to an electronic monitoring and balancing device. Each of these electronic devices are ballasted fo... | 07/01/1997 |
| 5627451 | Control method and control apparatus for secondary battery charging in constant current charging method A method for controlling a secondary battery constant current charging method and a control apparatus therefor, which measures battery voltage (V), a change in battery voltage per unit time (ƊV/Ɗt), a decrease in battery voltage (-ƊV) from a maximum va... | 05/06/1997 |
| 5606242 | Smart battery algorithm for reporting battery parameters to an external device A smart battery which provides electrical power and which reports predefined battery parameters to an external device having a power management system, includes: at least one rechargeable cell connected to a pair of terminals to provide electrical power t... | 02/25/1997 |
| 5583871 | Method for high-speed charging of secondary batteries and apparatus therefor To provide a single universal charging apparatus, capable of charging at high speed and efficiency any type of secondary battery, and capable of charging secondary batteries any arbitrary charging rate. In selecting the arbitrary amount of current from low cur... | 12/10/1996 |
