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| Number | Title | Issue Date |
| 7928736 | Method of estimating state of charge for battery and battery management system using the same The battery management system (BMS) measures a state of charge (SOC) of a battery by using a total amount of charge corresponding to a total amount of discharge accumulation. The BMS, outputting a SOC of a battery to an engine control unit (ECU), includes a sensor, ... | 04/19/2011 |
| 7888944 | Power gauge for accurate measurement of load current According to one exemplary embodiment, a power gauge for accurately measuring current consumed by a load coupled to a power source includes a current sense resistor having a first terminal coupled to the power source and a second terminal coupled to the load. The po... | 02/15/2011 |
| 7420374 | Battery with remaining electrical power display function and method of the same This invention provides an electronic device that has a battery with a power storage unit and a display module, a power detector and a display control module. The power storage unit is for storing electrical power and the display module is placed on the surface of t... | 09/02/2008 |
| 7375497 | State of charge tracking system for battery systems A battery control module for a battery system comprises a voltage measuring module that measures battery and a current measuring module that measures battery current. A state of charge (SOC) module communicates with the current and voltage measuring modules and esti... | 05/20/2008 |
| 7370219 | Power sharing between portable computer system and peripheral device A method and apparatus that allows for controlling operating time of a portable computer system and a peripheral device. A portable computing system that includes a rechargeable power supply and that includes a connection mechanism for coupling to a peripheral devic... | 05/06/2008 |
| 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 |
| 7355376 | Battery status indicator compensating for battery voltage recovery A method for determining a recovery voltage in a battery includes detecting a transient increased current draw event drawing current from the battery, the transient increased current draw event starting at a start time and ending at an end time; and in response to d... | 04/08/2008 |
| 7324902 | Method and apparatus for generalized recursive least-squares process for battery state of charge and state of health A method for determining a voltage based or current based state of charge (SOC) and state of health (SOH) of a battery system is provided. The method includes: providing a model of the battery system including an equivalent circuit having both low frequency and high... | 01/29/2008 |
| 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 |
| 7295129 | Battery operated device with a battery life indicator A countdown timer for high performance flashlights and similar battery-operated devices that is initialized with a runtime figure equal to the life expectancy of installed linear depletion-curve cells, that is always on and visible, that counts down whenever the fla... | 11/13/2007 |
| 7259572 | Method and apparatus for detecting impedance A method and apparatus for detecting an impedance across a pair of terminals. A sensing circuit is AC coupled to the terminals which produces an output related to a time constant associated with the impedance. ... | 08/21/2007 |
| 7253680 | Amplifier system with current-mode servo feedback A system and method for compensating an amplifier apparatus for low frequency and/or DC components of an externally applied input signal as well as for any voltage offsets contributed by the amplifier circuitry. Band-limited servo feedback is applied to predetermine... | 08/07/2007 |
| 7248053 | One time operating state detecting method and apparatus A method and apparatus for detecting a change in an electrical property between contacts. A one-time operating state detection device includes a member coupling a pair of contacts and a detector for detecting a change in the coupling between the pair of contacts whe... | 07/24/2007 |
| 7245107 | System and method for battery charge control based on a cycle life parameter A charging and discharging strategy for a rechargeable battery pack is disclosed. The strategy involves monitoring and learning the battery pack's condition (a cycle life parameter) in terms of its progression through its life cycle. The life cycle parameter may be ... | 07/17/2007 |
| 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 |
| 7236346 | Semiconductor apparatus and method of charging desired number of capacitors A capacitor charging semiconductor apparatus including a plurality of serially connected capacitors to be charged. A direct current source is applied to the plurality of capacitors. A plurality of bypass transistors is provided to bypass charge current supplied to t... | 06/26/2007 |
| 7218125 | Apparatus and method for performing a four-point voltage measurement for an integrated circuit A method and apparatus for determining a voltage, such as a bias voltage, supplied by an integrated circuit. A nominal terminating resistor is connected across a first and a second input/output pads from which the voltage is supplied. The voltage is measured across ... | 05/15/2007 |
| 7216044 | Battery state diagnosing device and battery state diagnosing method A battery state diagnosing device applies load to a battery from a load applying section, measures input and output characteristics of the battery, and diagnoses a state of the battery by plugging a result of measurement into a mathematical expression obtained by a ... | 05/08/2007 |
| 7211987 | Electric device with intelligent battery system therein A computer provided with an intelligent battery 52 for charging/discharging, the intelligent battery 52 supplying power to a main system unit, wherein the intelligent battery 52 includes: a voltage measuring circuit 70 for measuring a bat... | 05/01/2007 |
| 7208914 | Apparatus and method for predicting the remaining discharge time of a battery A method and apparatus for predicting the remaining discharge time of a battery are provided. The method includes measuring a dynamic parameter of the battery, obtaining a discharge current of the battery, measuring a voltage of the battery and obtaining a temperatu... | 04/24/2007 |
| 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 |
| 7205746 | Battery cover assembly having integrated battery condition monitoring A battery cover assembly having integrated battery condition monitoring for measuring electrical current passing to and from a battery post, including an electrically conductive collar for connecting to a post of a battery, and an electrically conductive terminal fo... | 04/17/2007 |
| 7202632 | Battery management apparatus When impedance calculating conditions are satisfied after a system is started, the impedance of a battery is calculated using the current of the battery, a time variation in open circuit voltage thereof, a time variation in terminal voltage thereof, a time variation... | 04/10/2007 |
| 7202576 | Uninterruptible power supply systems and enclosures One embodiment of the invention provides a UPS including a precharge circuit and a battery pack sensor electrically coupled to the precharge circuit. The sensor senses the presence of an extra battery pack. The precharge circuit includes: a first precharge contact; ... | 04/10/2007 |
| 7199489 | Battery communication system An uninterrupted power supply (“UPS”) system is disclosed which uses a battery communication system to communicate to a UPS processor information concerning the status of a battery pack in an array of parallel coupled battery packs. The battery packs provide bac... | 04/03/2007 |
| 7196523 | Battery charge/discharge monitoring circuit and method A circuit for monitoring charge/discharge of a battery is disclosed. The circuit may comprise first and second terminal capacitors disposed for first and second terminals of a current detection resistor connected to a battery. The first and second terminal capacitor... | 03/27/2007 |
| 7193421 | Method and device for determining the state of a vehicle battery A method and a device for determining the state of a vehicle battery in which the battery voltage is measured and information regarding the state of the vehicle battery is derived from the measured battery voltage by means of an integration procedure. A variable wei... | 03/20/2007 |
| 7193391 | Method for cell balancing for lithium battery systems A rechargeable multiple cell battery pack has an application associated therewith that draws power from the battery pack. While the battery pack is in operation, voltage, current, state-of-charge (SOC), and impedance data are collected on a per-cell basis and an alg... | 03/20/2007 |
| 7176806 | Physical key to facilitate an inactive mode for a state-of-charge indicator within a battery The invention provides a system and battery including a state-of-charge indicator (SOCI) to monitor and display the amount of charge within the battery. The SOCI is capable of operating in a hibernate mode, an active mode, and/or a sleep mode. The battery may be man... | 02/13/2007 |
| 7173438 | Measuring capacitance A method for determining capacitance includes alternately charging a capacitor to a first voltage and discharging the capacitor to a second voltage, generating an output signal having a frequency that is a function of a time period, and determining the capacitance b... | 02/06/2007 |
| 7161486 | Electrostatic sensors A sensor 10 comprises an array of electrostatic sensor elements 12, each centred at a respective sensing position 14. Each element produces a respective output signal at 16. The outputs 16 can be used to drive respective pixels of ... | 01/09/2007 |
| 7154276 | Method and apparatus for measuring a parameter of a vehicle electrical system An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a ... | 12/26/2006 |
| 7148655 | Electronic equipment, display control method, recording medium and program A communication portion of a video camera receives expected power information of a printer from the printer, and also receives battery power information from a battery pack. When a microcomputer judges that there is any shift to a state where the power consumption a... | 12/12/2006 |
| 7135791 | Electric tightening device A controller compares a minimum value of power source voltage which decreases in association with starting current generated upon start of a motor with a threshold value in a storing unit. When the minimum value is less than the threshold value, the controller notif... | 11/14/2006 |
| 7136762 | System for calculating remaining capacity of energy storage device The remaining capacity of a battery obtained by integrating current and that obtained from the estimated open circuit voltage of the battery are weighted with a weight which varies depending on the operating conditions of the battery as needed and the weighted remai... | 11/14/2006 |
| 7129706 | Part tester and method A part tester can be configured to prevent part warranty fraud by requiring the input of unique part identifying information into a part tester prior to initiation of the testing. By configuring the tester and the information input correctly, warranty fraud can be m... | 10/31/2006 |
| 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 |
| 7124040 | Method of monitoring a fuel cell unit In a method of monitoring a fuel cell unit, at least one pair of measured values, including a measured current value and a measured voltage value (Iactual, Uactual) are determined at the outputs of the fuel cell unit. The measured voltage value... | 10/17/2006 |
| 7119686 | Theft prevention device for automotive vehicle service centers An apparatus and method for preventing theft in automotive vehicle service centers. A transmitter transmits a wireless security signal which defines a perimeter. At least one portable tool for use in automotive vehicle service centers includes a receiver configured ... | 10/10/2006 |
