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| Number | Title | Issue Date |
| 8035353 | Battery recharge prevention principle for short battery voltage dips The present invention relates to a method and circuit configuration (100) for preventing any needless battery recharge at each short battery voltage dip. Such a circuit configuration (100) comprises a detector means (200) for detecting a voltage... | 10/11/2011 |
| 7880442 | Charging control device for a storage battery One of first through fourth target state of charge levels, which are set at values that increase gradually over time, is selected on the basis of an ON/OFF state of a specific current consumer installed in the vehicle and a state of charge immediately preceding an e... | 02/01/2011 |
| 7692409 | Generator controller A generator controller, in its various embodiments, displays genset fault messages, a genset elapsed time hour meter, service countdown reminder, monitors battery voltage changes over multiple periods of time to establish and display the “battery level,” uses th... | 04/06/2010 |
| 7671568 | Method of charging a lithium-ion battery comprising a negative electrode The present invention relates to a method for charging a lithium-ion accumulator with a negative electrode at an operating potential larger than 0.5 volts relatively to the Li+/Li pair, which comprises a first charging step at a constant voltage between 2 volts and ... | 03/02/2010 |
| 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 |
| 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 |
| 7345455 | Staggered backup battery charging system A battery backup system includes a control device including a power sensing device, a discharge circuit, a charging circuit, and a plurality of battery packs. A lower threshold is established representative of a minimum acceptable effective energy capacity. Each bat... | 03/18/2008 |
| 7317299 | Method of calculating aging factor of battery for hybrid vehicle Disclosed herein is a method of calculating the aging factor of a battery for a hybrid vehicle. The method includes the steps of detecting a first actual SOC value of the battery during operation of the vehicle; storing the first SOC value; initializing accumulated ... | 01/08/2008 |
| 7274172 | Drive state detection circuit A drive state detection circuit is disclosed that detects a drive state of plural parts driven by alternating currents. The drive state detection circuit comprises current detecting parts to detect alternating current detection signals of the respective alternating ... | 09/25/2007 |
| 7190171 | Detecting method and detecting apparatus for detecting internal of rechargeable battery, rechargeable battery pack having said detecting apparatus therein, apparatus having said detecting apparatus therein, program in which said detecting method is incorporated, and medium in which said program is stored A detecting method for detecting internal resistance of an inspective rechargeable battery when said inspective rechargeable battery is charged by the constant current-constant voltage charging regime, said detecting method comprising at least a step (a) wherein an ... | 03/13/2007 |
| 7183726 | Cold cathode fluorescent lamp drive apparatus and method A cold cathode fluorescent lamp drive apparatus for lighting a cold cathode fluorescent lamp is disclosed. The cold cathode fluorescent lamp drive apparatus includes an abnormal current holding unit that is configured to hold an abnormal current that flows in the co... | 02/27/2007 |
| 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 |
| 7126312 | Method and apparatus for balancing multi-cell lithium battery systems A method and apparatus of the present invention are designed to equalize cell-to-cell imbalances in a multi-cell lithium battery system. A time-to-balance parameter is calculated for each cell at the beginning of charge, and balancing occurs for each cell having a p... | 10/24/2006 |
| 7109684 | Secondary cell charger and charging method An equipment and method for charging a secondary battery are provided to quickly and surely charge a secondary battery (secondary batteries) while preventing the secondary battery (batteries) from overcharging or insufficient charging. Special charging voltage E | 09/19/2006 |
| 7030590 | Apparatus for refreshing batteries Battery charger (10) may include a power source circuit (22) for charging rechargeable batteries (58) when a battery pack (50) is connected directly to the battery charger or is connected thereto with an adapter (30) interposed the... | 04/18/2006 |
| 6965216 | Method and apparatus for ameliorating electrolyte stratification during rapid charging An apparatus and method for recharging a rechargeable lead acid battery. The apparatus supplies an overcharge current to the battery during and before completion of recharging of the battery to ameliorate stratification of the battery. ... | 11/15/2005 |
| 6404164 | Method of battery chemistry identification through analysis of voltage behavior A method of identifying battery chemistry of a battery in an electronic device monitors voltage behavior of the battery in response to a stimulus. The method can be performed in the electronic device while the device is in normal operation without affecti... | 06/11/2002 |
| 6320354 | Method and apparatus for battery charging A battery charging circuit comprises a recharge input and a recharge output with a switching element electrically coupled in series between the recharge input and output. A recharge controller controls a conducting state of the switching element. When in ... | 11/20/2001 |
| 6316909 | Electronic device, control method for electronic device, recharge-rate estimating method for secondary battery, and charging control method for secondary battery A first circuit having a first coil electrically charges a second circuit having a second coil through electromagnetic coupling of the two coils. When data signals are to be transferred between the first and second circuits, signal transfer is started onl... | 11/13/2001 |
| 6137270 | Buzzer driving device To prevent an erroneous operation of a buzzer upon fall of a source voltage, a buzzer driving device connectable with a direct current source (1) comprises a charging/discharging circuit (3) which is connected with the direct-current source (1) via a swit... | 10/24/2000 |
| 6020720 | Fast charging method and apparatus for secondary cells A fast charging method and apparatus for secondary cells, especially for lithium ion cells. The charging process has two charging phases. In the first charging phase, a constant current is supplied to the secondary cell from a charging apparatus whilst mo... | 02/01/2000 |
| 5994872 | Apparatus for charging energy storage means from a multiphase power source A battery charger which supplies charging current for a high voltage, high current battery in accordance with a charge profile which preferably includes both a charge pulse sequence as well as a discharge pulse sequence. Charging power is obtained from a ... | 11/30/1999 |
| 5955869 | Battery pack and a method for monitoring remaining capacity of a battery pack A battery pack and a method of monitoring remaining capacity of a battery pack. With this method, two different procedures are used to estimate that remaining capacity. In a first procedure, data generated on the battery pack is used to estimate remaining... | 09/21/1999 |
| 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 |
| 5773955 | Battery charger apparatus A battery charger which supplies charging current for a high voltage, high current battery in accordance with a charge profile which preferably includes both a charge pulse sequence as well as a discharge pulse sequence. Charging power is obtained from a ... | 06/30/1998 |
| 5760570 | Rechargeable battery apparatus The invention provides a rechargeable battery apparatus wherein, when secondary batteries having different terminal voltages are used in parallel connection, a back current is prevented and a loss which is produced in a diode for prevention of back curren... | 06/02/1998 |
| 5760568 | Method and apparatus for charging a battery and for determining a voltage of the battery during charging The invention is related to a charging device (1) in which the charging current (Ich) used for charging a battery (2) is chopped according to a certain duty cycle (η). A certain charging voltage reference value (Vch), which equals t... | 06/02/1998 |
| 5739673 | Control device for the charging of at least one battery A battery-charger uses a fuzzy logic microprocessor. The use of fuzzy logic makes it easier to take account of the diversity of the types of batteries to be charged and to control the state of the batteries charged while, at the same time, producing a bat... | 04/14/1998 |
| 5739672 | Method and apparatus for charging batteries Batteries are charged using sequences of charge and discharge pulses in which a controller adjusts charge rate and/or terminates the charge process based on measurements taken during the preceding charge cycle and an internally computed algorithmic logic ... | 04/14/1998 |
| 5731685 | Battery management system A battery management chip which controls charging and discharging currents of a rechargeable battery. Another significant teaching of the presently preferred embodiment is a battery manager integrated circuit which includes an on-chip bandgap voltage refe... | 03/24/1998 |
| 5726554 | Charging a battery having a nominal critical terminal voltage A battery pack of a computer system includes a battery having a nominal critical terminal voltage that may not be exceeded without hazardous failure of the battery. The battery pack includes a controller for routing power from an external power source to ... | 03/10/1998 |
| 5726555 | Battery charger capable of displaying necessary charging time In a battery charger for use in charging a secondary battery, a display unit displays a necessary charging time which is left until completion of charging operation. The battery charger adopts a constant-voltage and constant current control method. A memo... | 03/10/1998 |
| 5723971 | Apparatus for charging a battery for a charge time determined based on the depth of discharge A charging apparatus for a rechargeable storage battery is disclosed which charges the battery at a constant current. The charging apparatus monitors a variation in voltage of the battery during charge and finds a minimum value thereof to estimate the amo... | 03/03/1998 |
| 5703466 | Charging control apparatus A charging control apparatus for controlling a charging current supplied to a secondary battery has a pre-charge secondary battery status decision circuit for determining a discharged status of the secondary battery when it starts being charged, and a cha... | 12/30/1997 |
| 5691620 | Battery charging method A voltage at the time of full charging of a battery being charged is set to be larger for a lithium ion battery than for a nickel cadmium battery. Charging of the battery is then carried out using a constant current circuit and a fixed voltage circuit. If... | 11/25/1997 |
| 5642032 | Charging method for a battery assembly including a plurality of secondary batteries A charging apparatus charges a battery assembly including a plurality of secondary batteries. After the charging apparatus detects a full charge level, the apparatus stops charging. Then, when the charge level of the battery assembly falls below a predete... | 06/24/1997 |
| 5631539 | Process and apparatus for charging lithium cells or the like A process for charging one or more lithium containig electrochemical cells which exhibit a plurality of characteristics with respect to time while either being charged with or while discharging energy, wherein the charging process includes an unpetrify ph... | 05/20/1997 |
| 5606240 | Battery charger A battery charger has a battery capacity detector for detecting the remaining battery capacity and a timer setter for controlling the timer setting that determines the battery charging time based on the results from the battery capacity detector. The batt... | 02/25/1997 |
| 5596259 | Method of charging a secondary battery A charging apparatus charges a secondary battery, while controlling an output voltage of the charging apparatus to maintain the effective charging voltage at a substantially constant predetermined value at which the secondary battery is actually charged. ... | 01/21/1997 |
| 5519302 | Battery charger which suspends charging according to a voltage drop and restarts charging according to battery temperature By sensing battery voltage and temperature, a battery charger fully charges a battery even when a load is attached during charging. A control circuit suspends charging by detecting a change in battery voltage near a peak voltage. A charge restart section ... | 05/21/1996 |
