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| Number | Title | Issue Date |
| 7906940 | Circuit and method of operation for an electrical power supply A battery charging circuit comprising: a semiconductor switch having an output connected to a rechargeable battery; a battery charge controller for receiving power from an external source, and supplying output power to a portable device and the input of the semicond... | 03/15/2011 |
| 7791319 | Circuit and method of operation for an electrical power supply A battery charging circuit comprising: a semiconductor switch having an output connected to a rechargeable battery; a battery charge controller for receiving power from an external source, and supplying output power to a portable device and the input of the semicond... | 09/07/2010 |
| 7786705 | System and method for automatically synchronizing and acquiring content for battery-powered devices A time budget during which a portable device will be enabled to acquire content is established and the time budget as well as a filter is used to determine which content the portable device will acquire during a synchronization process. ... | 08/31/2010 |
| 7675269 | Circuit and method for battery charging and discharging protection A method to detect the presence of battery protection circuits in any battery powered product. The major advantage of the method is to make the battery voltage very smooth during the charging process. The proposed circuit can give a good prediction of protection swi... | 03/09/2010 |
| 7525289 | System and method for automatically synchronizing and acquiring content for battery-powered devices Various synchronization and content acquisition tasks able to be performed by a portable device are governed by reference to a budget. In operation, the budget may be adjusted as a function of a state of a battery associated with the portable device, as a function o... | 04/28/2009 |
| 7408326 | Battery pack system interface with multiple mode control states A system interface having an interface for dual battery packs provides for power up sequencing of battery packs and pack switching under the control of a host processor within associated system electronics. The host processor communicates with each battery pack via ... | 08/05/2008 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 7282890 | Voltage detector of battery assembly A voltage detector for a battery assembly having unit cells, the voltage detector includes a low voltage system circuit and a high voltage system circuit. The low voltage system circuit includes an enable pulse output unit which outputs an enable pulse to command de... | 10/16/2007 |
| 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 |
| 7205747 | System and method for monitoring a charging period in a battery charger An apparatus and method for disabling a charging counter circuitry within a battery charger is disclosed. The apparatus includes circuitry connected to a pin associated with the charging counter circuitry of the battery charger, said circuitry receiving a signal fro... | 04/17/2007 |
| 7180269 | Battery charging method The battery charging detects battery temperature and includes a temperature maintaining charging operation wherein average charging current is controlled to drive battery temperature to a holding temperature, and charging is performed while maintaining battery tempe... | 02/20/2007 |
| 7126341 | Automotive vehicle electrical system diagnostic device An automotive vehicle electrical system diagnostic apparatus includes first and second electrical connections configured to electrically couple to an electrical system of an automotive vehicle which includes a battery. Digital samples are obtained during operation o... | 10/24/2006 |
| 7106070 | Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries A broad-band technique for reducing the distributed inductance of a four-conductor Kelvin cable is disclosed. A special inductance-canceling cable section is connected in tandem with the cable section contacting the cell/battery. Connections between the two cable se... | 09/12/2006 |
| 7102329 | Method of measuring the battery level in a mobile telephone Measuring the voltage level of a mobile telephone battery during a charging operation involves disabling the charge temporarily so that the battery rapidly enters discharge mode. The discharge mode voltage is more representative of the true battery charge level, so ... | 09/05/2006 |
| 7091697 | System and method for efficiently implementing a battery controller for an electronic device A system and method for effectively managing operating power for an electronic device may include a battery pack coupled to the electronic device for supplying operating power to the electronic device. A battery controller may be configured as a single integrated-ci... | 08/15/2006 |
| 7034541 | 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... | 04/25/2006 |
| 7003410 | 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. ... | 02/21/2006 |
| 7003411 | Electronic battery tester with network communication An electronic battery tester for testing a storage battery includes test circuitry configured to provide a battery test output related to a condition of the battery. A memory stores a battery tester address of the battery tester, and communication circuitry transmit... | 02/21/2006 |
| 6998847 | Electronic battery tester with data bus for removable module An electronic battery tester is provided for testing storage batteries. Battery test circuitry is configured to couple to the storage battery and measure a condition of the battery. A removable module is configured to couple to the battery tester to add increased fu... | 02/14/2006 |
| 6980912 | Method and apparatus for use with a portable power source An apparatus (10) having a portable power source (11) can make use of a plurality of differing charge depleted threshold values (and, in a preferred embodiment, corresponding visual charge-remaining indicators) to determine what level of charge remains... | 12/27/2005 |
| 6950030 | Battery charge indicating circuit A voltage indicator circuit for indicating a charge state of a power supply, such as a battery pack, is disclosed. The voltage indicator circuit includes a voltage divider circuit that connects to a plurality of series connected light sources, such as light emitting... | 09/27/2005 |
| 6906523 | Method and apparatus for testing cells and batteries embedded in series/parallel systems A “three-point” measurement technique effectively removes system effects to determine impedance, admittance, resistance, or conductance of an individual cell, battery, or interconnecting conductor embedded in a series or series-parallel electrochemical battery o... | 06/14/2005 |
| 6366051 | System for automatically charging the battery of a remote transmitter for use in a vehicle security system A system for automatically charging a battery of a remote keyless entry transmitter includes a voltage monitoring circuit having a first microprocessor which monitors battery voltage and which causes the transmitter to send an RF signal to a receiver in t... | 04/02/2002 |
| 6344733 | Portable jump-starting battery pack with charge monitoring system 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 th... | 02/05/2002 |
| 6291968 | System for automatically charging the battery of a remote transmitter for use in a vehicle security system A system for automatically charging a battery of a remote keyless entry transmitter includes a voltage monitoring circuit having a first microprocessor which monitors battery voltage and which causes the transmitter to send an RF signal to a receiver in t... | 09/18/2001 |
| 6091230 | Voltage recovery method for a zinc-air battery A method of recovering and restoring the voltage in a zinc-air battery that has dropped below a first threshold. The method includes the steps of decoupling essentially all loads from the zinc-air battery and permitting the voltage to stabilize, sampling ... | 07/18/2000 |
| 5883497 | Battery fuel gauge A power supply system, for example, for use with a portable personal computer, includes a smart battery pack and a charging system. The smart battery pack is provided with a dedicated microcontroller for controlling the charging level of the battery charg... | 03/16/1999 |
| 5847546 | System and apparatus for generating a continuosly variable reference signal for controlling battery cell charging A power supply system, for example, for use with a portable personal computer, includes a smart battery pack and a charging system. The smart battery pack is provided with a dedicated microcontroller for controlling the charging level of the battery charg... | 12/08/1998 |
| 5831416 | Apparatus and method for charging batteries A battery charging apparatus (12) includes a voltage regulator arrangement (14), a charging transistor (16), a switching transistor (18), and preferably an operational status indicating arrangement (20). The voltage regulator arrangement (14) receives an ... | 11/03/1998 |
| 5783930 | Self-oscillating buck mode battery charger A self-oscillating buck mode battery charger apparatus 10. The apparatus 10 includes a main switching transistor 22, a first control transistor 34 and a second control transistor 36. The control transistors 34 and 36 are arranged such that neither control... | 07/21/1998 |
| 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 |
| 5694022 | Variable pulse recharging battery pack A battery pack for an electrical device contains rechargeable batteries for supplying power to the electrical device and a transformerless pulse charging circuit. The pulse charging circuit generates a pulse charging current from received AC current, and ... | 12/02/1997 |
| 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 |
| 5677614 | Battery charger using a car battery as a power source In a battery charger of the type using a car battery as a power source for charging a rechargeable batter, when a low voltage state of the car battery continues for a first predetermined period of time, charging of the rechargeable battery will be interru... | 10/14/1997 |
| 5663629 | Battery charger which detects the battery charging status A secondary battery is charged to a full charge state without overcharging. A current detection circuit detects a charging current state supplied to the battery to control the turn-on and the turn-off of a switch in accordance with an output of the curren... | 09/02/1997 |
| 5644210 | Charging control method and circuit of recharging battery A charging control method and circuit of a rechargable battery, able to achieve full charging of the battery by turning on/off of the battery during a given time control circuit of a recharging battery includes: a battery voltage sensing unit connected to... | 07/01/1997 |
