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7624292 |
Battery power detection device
A battery power detection device is disclosed that has a reduced circuit area and is able to achieve sufficiently high detection accuracy. The battery power detection device includes a temperature...
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7620834 |
Battery voltage sag avoidance algorithm for a wireless handheld device
A method and system for power source management of a portable device. A power source used to supply electrical energy for a portable device should ideally operate with a constant terminal voltage....
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7619394 |
Capacitor charger with a modulated current varying with an input voltage and method thereof
In a capacitor charger including a transformer having a primary winding connected with an input voltage and a secondary winding for transforming a primary current flowing through the primary...
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7619392 |
Method for verifying smart battery failures by measuring input charging voltage and associated systems
A method and associated system are disclosed for verifying charging failures for smart batteries by measuring input charging voltage and associated systems. In one embodiment, a determination is...
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7619389 |
Charge control device for a secondary battery
A charge circuit 6 supplies a charging voltage (Vc) or a charging current to a secondary battery 2, 24 to 26 used for driving an appliance 21 ; a charged level setting device 5 , Sc 1 ...
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7612537 |
Galvanically isolated charge balance system
A galvanically isolated charge balance system for a multicell battery includes a balancing circuit associated with each cell; each balancing circuit including a flying capacitor; a variable...
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7612525 |
Electrical apparatus
An electrical apparatus includes an electrical apparatus main body and a battery pack. The electrical apparatus main body has a load, a manipulation switch, a power receiving electrode, a main body...
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7610124 |
Control device for motor-driven vehicle
A control device for a motor-driven vehicle, the control device includes: a zone determining unit that determines at least a normal use zone, a discharge zone, an over-discharge zone, a charge...
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7605567 |
Battery protecting circuit and battery with such protecting circuit
A protecting circuit for a battery used to power an electronic system includes a control circuit and a sensing circuit. The sensing circuit includes a tri-axial accelerometer having X, Y and Z...
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7605566 |
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...
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7605565 |
Battery pack with protection circuit
A battery pack comprises a protection circuit adapted to detect an excessive current consumption condition associated with electronic components forming the battery pack.
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7605352 |
Method for sorting positive temperature coefficient (PTC) elements
In a method for sorting PTC elements having different resistance-temperature characteristics, a predetermined voltage that allows a current to sufficiently decay is applied to each of PTC elements...
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7599717 |
Method and apparatus for displaying battery fault notifications on wireless devices
A battery pack for a mobile device, a method for processing fault notifications for a mobile device, and a mobile device for processing fault notifications are described. The battery pack having a...
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7598708 |
Battery protecting apparatus and battery protecting circuit
A battery protecting circuit is disclosed that includes a negative voltage terminal voltage detecting circuit that detects when a voltage of a negative voltage terminal decreases to less than a...
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7595610 |
Redundant battery protection system and method
An enhanced battery pack having an enhanced protection system addresses a potential weakness of the conventional protection system of a conventional battery pack. The enhanced protection system...
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7593823 |
Method and device for determining state of battery, and battery power supply system therewith
Coefficients A and B are calculated from the measured temperature and the measured state of charge. Next, a response voltage Vc is calculated by substituting the measured internal impedance X into...
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7592776 |
Energy storage device configured to discharge energy in response to unsafe conditions
A method, device and system is disclosed for rapidly and safely discharging remaining energy stored in an electrochemical battery 104 in the event of an internal short circuit or other fault. In...
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7586292 |
Low voltage cutoff circuit for an electrochemical cell
The present invention is an electrical circuit that disconnects an electrochemical cell from a load when the cell's voltage descends to a predetermined value. The present invention is also...
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7579842 |
Battery management apparatus
A battery management system includes a sensing module, a feeding module, a control module, and a common line adapted for connection to a battery when in use. In some embodiments, a battery...
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7579811 |
Battery pack, battery protection processing apparatus and control method thereof
It is aimed at stably implementing a protection function of a secondary battery mainly under software control and providing a battery pack characterized by a reduced circuit installation area,...
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7576517 |
System and method for remote monitoring of battery condition
A battery monitoring system may be configured to interface with a first battery monitoring unit and a second battery monitoring unit. The first battery monitoring unit may be configured to output...
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7573242 |
Charger system and method
Systems and methods of controlling a charging status indicator in a charging system for a device having a rechargeable power supply are provided. The charging system determines whether a device...
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7573238 |
Voltage detection device and electric vehicle including voltage detection device
A voltage detection device for accurately correcting detection errors with voltage greater than an internal reference voltage. The device includes a first switch group of switches for obtaining the...
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7570021 |
Rechargeable battery controller and method for controlling output of rechargeable battery
A rechargeable battery controller for controlling output of a rechargeable battery mounted on a vehicle having a power source including an internal combustion engine, a starter motor for starting...
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7570017 |
Rechargeable battery pack for a power tool including over-discharge protection
A battery pack for a power tool has a less-current consuming over-discharge protection. The battery pack includes a battery stack composed of a plurality of series connected secondary cells, and a...
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7564220 |
Method and electronic circuit for efficient battery wake up charging
A method for efficiently charging a battery. The method includes producing a first signal having a voltage level dependent on the voltage of the battery, comparing the voltage level of the first...
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7560900 |
Rechargeable lithium battery protection device
A rechargeable lithium battery protection device uses an external circuit to control charging or discharging a rechargeable lithium battery for preventing an overcharge or an overdischarge of the...
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7557540 |
Capacity measurement system for a battery with open circuit voltage detection
A method and system for measuring the remaining capacity of a battery with open circuit voltage detection is disclosed. The method includes the steps of measuring an open circuit voltage, obtaining...
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7554296 |
Method and apparatus for detecting charged state of secondary battery based on neural network calculation
A neural network type of apparatus is provided to detect an internal state of a secondary battery implemented in a battery system. The apparatus comprises a detecting unit, producing unit and...
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7554294 |
Battery health monitor
A battery health monitor (BHM) that operates as a battery-mountable full-spectrum alternating current (ac) impedance meter that facilitates monitoring a state-of-charge and a state-of-health of a...
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7553583 |
Systems and methods for constructing a battery pack
Methods and systems for constructing a battery, the battery including at least two energy storage sections connected in parallel to a common module power bus, the energy storage sections including...
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7551003 |
Current mirror circuit and constant current circuit having the same
A current mirror circuit includes a pair of first and second transistors having bases connected together and emitters connected to a power line, a resistor connected between the bases of the first...
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7545121 |
Auxiliary vehicle power supply
A multiple-battery charging system for enabling a vehicle with an internal-combustion engine or hybrid engine to be equipped with a plurality of electric storage batteries. The multiple-battery...
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7545119 |
Sensor incorporated into energy storage device package
A method of preventing an energy storage device failure in a power supply, includes a package deformation, indicating a gas buildup and a forthcoming failure in a package wall of the energy storage...
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7545118 |
Charge system and charger for an electric apparatus and a control method thereof
The present invention relates to a charge system comprising an electric apparatus that comprises a first rechargeable battery and an adapter for supplying power to the first rechargeable battery,...
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7541777 |
Battery protection circuit
A battery protection circuit includes an abnormal condition detection circuit having a resistor through which a current flows from a load in response to a current flowing in the load. The resistor...
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7541776 |
Method and system for operating a portable electronic device in a power-limited manner
Improved techniques to manage operation of a portable electronic device having a substantially depleted battery when power is available from an external, power-limited source are disclosed. In one...
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7541757 |
Motor vehicle
A system and method for operating an electrical supply network are disclosed. An exemplary embodiment couples a vehicle to the supply network, receives a trigger to cause a partial discharge of an...
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7538519 |
Information handling system with battery protected from non-permanent failures
In a method and system for protecting a battery being charged by an electrical device, a current flowing through a cell stack of the battery is measured. If the measured current is greater than a...
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7531989 |
Battery fuel gauge circuit
The present invention is a battery fuel gauge circuit for measuring the capacity of a battery pack. The battery fuel gauge circuit includes an amplifier circuit, a correction circuit, a plurality...
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7531988 |
Battery pack having a protection circuit
A battery pack including at least a battery cell and a protection circuit for shutting off a overcurrent discharge, comprising a discharge control switch connected between a negative terminal of...
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7525287 |
Battery pack for driving electric motor of compact engine starting device, engine starting device driven by the battery pack, and manual working machine having the engine starting device
This invention provides a battery pack for driving a compact electric motor of a compact engine starting device mounted on a working machine, comprising lithium-based secondary battery comprising...
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7525285 |
Method and system for cell equalization using state of charge
The present invention relates to an implementation of a method for cell equalization. The present invention uses other information such as the individual cell state-of-charge (SOC) estimates, and...
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7525284 |
Charging rate estimating method, charging rate estimating unit and battery system
The method for calculating charged rate of a secondary battery is intended to calculate charged rate of a secondary battery which supplies electric power to loads, and comprises the step to measure...
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7522942 |
On-vehicle radio communication apparatus
In an on-vehicle radio communication apparatus, when the battery is in a voltage discharging state, every time a predetermined period pases, a current consumption value is updated for the radio...
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7518341 |
Method for verifying smart battery failures by measuring input charging voltage and associated systems
A method and associated system are disclosed for verifying charging failures for smart batteries by measuring input charging voltage and associated systems. In one embodiment, a determination is...
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7508171 |
Protection methods, protection circuits and protective devices for secondary batteries, a power tool, charger and battery pack adapted to provide protection against fault conditions in the battery pack
In a cordless power tool system, protection methods, circuits and devices are provided to protect against fault conditions within a battery pack that is operatively attached to a power tool or...
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7508168 |
Electronic apparatus with remaining battery power indicating function
An electronic apparatus has a multiplicity of display units including an electronic viewfinder and a liquid crystal display (LCD) panel. The apparatus has various display modes. The remaining...
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7508165 |
Cell voltage equalization apparatus for combined battery pack including circuit driven by power supplied by the combined battery pack
In a combined battery pack of a plurality of battery cells, a comparison circuit compares a voltage appearing at a common connection point between two adjacent battery cells with a reference...
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7508091 |
Vehicle battery protection device
A battery protection device for preventing vehicle batteries from being drained to the point that the battery cannot start the vehicle includes an electrical meter that measures at least one...
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