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7626365 |
Charging system and method
The invention concerns a method ( 200 ) and system ( 100 ) for charging a battery ( 110 ). The method includes the steps of receiving ( 212 ) an input power supply signal ( 300 ), monitoring ( 216...
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7622929 |
Pulse-discharge battery testing methods and apparatus
A method for evaluating the conditions a battery comprises applying a discharge pulse to the battery and monitoring a response of the battery to the discharge pulse. In some embodiments a measure...
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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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7557541 |
Method and apparatus for charging a rechargeable battery with non-liquid electrolyte
The object of the invention is a method for charging a rechargeable battery having non-liquid electrolyte, which battery has an internal resonance frequency. The charging process contains at least...
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7471067 |
Battery remaining capacity detection method and power supply apparatus
A battery remaining capacity detection method calculates a remaining capacity of a battery having the possibility that a memory effect occurs by using correlation between an voltage V 0 and the...
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7339354 |
Rechargeable battery charging method and apparatus
A method and an apparatus for charging a lithium-ion based rechargeable battery in a short time is provided. A terminal voltage of the rechargeable battery is compared with a predetermined first...
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7218077 |
Systems and methods for signal generation using limited power
A signal generator provides an output signal having a series of pulses and a pulse repetition rate. The signal generator includes an energy storage circuit and a switch control circuit. The energy...
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7026791 |
Electrochemical treatment method to reduce voltage delay and cell resistance in lithium/silver vanadium oxide cells
It is known that reforming implantable defibrillator capacitors at least partially restores and preserves their charging efficiency. An industry-recognized standard is to reform implantable...
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6930468 |
Discharge methodologies for optimizing the performance of lithium/silver vanadium oxide cells
It is known that reforming implantable defibrillator capacitors at least partially restores and preserves their charging efficiency. An industry-recognized standard is to reform implantable...
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6271648 |
Method of preconditioning a battery to improve cold temperature starting of a vehicle
A method of preconditioning a battery 34 of a hybrid electric vehicle 10 to improve cold temperature starting of vehicle 10. The method utilizes the vehicle's electric starter/generator 16 to...
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6118275 |
Method and apparatus for measuring battery capacity using voltage response signal based on pulse current
A method of measuring battery capacity using a voltage response signal based on a pulse current, where the method includes the steps of: measuring a voltage response signal based on a pulse current...
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6100664 |
Sub-miniature high efficiency battery charger exploiting leakage inductance of wall transformer power supply, and method therefor
A battery charger (100) suitable for sub-miniaturization and connection to a wall transformer power supply (20) to charge a battery (30). The battery charger (100) features a switch (130) that...
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6037751 |
Method and apparatus for charging batteries
A method and apparatus for efficiently charging lead-acid batteries applies small voltage steps to probe the charging efficiency of a battery being charged. The application of a voltage step causes...
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6008625 |
Use of double cells to power an implantable medical device
A power source including two alkali metal/transition metal oxide cells discharged in parallel to power an implantable medical device is described. The first cell powers the medical device in both a...
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5694023 |
Control and termination of a battery charging process
A method and an apparatus for adjusting the process of charging a battery so as to charge the battery as rapidly as possible while avoiding overheating of or damage to the battery. The method...
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5654622 |
Secondary battery charging method and apparatus which controls protecting voltage level of battery protecting circuit
A secondary battery is connected to a protecting circuit. The protecting circuit interrupts charging of the secondary battery when the battery voltage of the secondary battery reaches a first...
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5633574 |
Pulse-charge battery charger
This pulse-charge battery charger charges Nickel-Cadmium and Nickel-metal hydride batteries having one or more cells and used with cellular telephones and camcorders. A battery is lowered into a...
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5621297 |
Process and apparatus for charging a battery
A process for charging a cell is disclosed. In this process, a discharged cell is connected to a charger. Discharge pulses are periodically withdrawn from the cell. Charging pulses are provided by...
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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...
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5600226 |
Methods of controlling the application and termination of charge to a rechargeable battery
As a substantially constant charge current is applied to a battery, the voltage is periodically measured and the slope of the voltage characteristic is calculated. The minimum slope of the bottom...
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5600227 |
Electrical storage battery charger and conditioner
The present invention provides a charging, discharging and conditioning method and apparatus that provides an improved method of breaking in new rechargeable batteries and reconditioning old...
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5561360 |
Battery cycle life improvements through bifurcated recharge method
A two part battery recharge method first introduces stepped charge current to the battery to restore a majority of energy to a deeply discharged battery. Thereafter, relatively low frequency...
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5523668 |
NiCd/NiMH battery charger
A battery charging system and method of operating the system is provided which can charge either NiCd and/or NiMH batteries with significant permanent recombinant capacity sufficient to permit cell...
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5508598 |
Method for quick charging of rechargeable batteries
A device for quick charging of batteries, whereby the charging current of the battery is directed in constant current impulses. Several charging current strengths of varying strengths, are brought...
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5500583 |
Methods for extending the cycle life of solid, secondary electrolytic cells during recharge of the electrolytic cells
Disclosed are methods for extending the cycle life of solid, secondary electrolytic cells employing a solid electrolyte which methods comprise (a) charging the discharged electrolytic cell at a...
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5481174 |
Method of rapidly charging a lithium ion cell
A battery charger for lithium ion cells closely monitors cell voltage, and charge time, so as to avoid the over-application of charge to the cell. Charge pulses (104) are followed by a first rest...
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5307000 |
Method and apparatus for charging, thawing, and formatting a battery
A method and an apparatus for rapidly charging a battery. The preferred charging method comprises applying one or more charging pulses (C1, C2), separated by a waiting period (CW1), with the last...
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5304914 |
Process for charging a battery
A process for charging a cell is disclosed. In this process, a discharged cell is connected to a charger. Discharge pulses are periodically withdrawn from the cell. Charging pulses are provided by...
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5302472 |
Method of operating metal-halogen battery
A method of operating a metal-halogen battery such as a zinc-bromine battery, intended to prevent dendrite from formation on an electrode during charging the battery. The method comprises the step...
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5266881 |
Universal high current battery charger
A high current battery charger of the driven blocking oscillator type includes a three-winding transformer. The primary winding is connected in series with the collector-emitter path of a switching...
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5225762 |
Battery management system
A battery charger providing a fast charge while the output voltage of the battery does not exceed a reference voltage. The battery charger providing a self-discharge interval after the output...
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4956597 |
Method and apparatus for charging batteries
A method and apparatus for charging batteries of the type characterized by entry into a gassing phase just prior to reaching full charge, are disclosed. Means are provided for periodically applying...
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4947124 |
Method for charging a nickel-cadmium accumulator and simultaneously testing its condition
A method for charging and simultaneously testing the condition of a nickel-cadmium accumulator wherein the charging cycle includes intervening measuring phases with discharging phases of relatively...
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4847546 |
Solar panel output enhancement circuit
A circuit for operation with solar panels exhibiting constant current and variable voltage characteristics. The power output of the panels is maximized by the circuit through the use of a step-down...
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4829225 |
Rapid battery charger, discharger and conditioner
An improved method and device for rapidly charging a battery by providing a charge pulse to the battery, followed immediately by a depolarization pulse created by allowing the battery to discharge...
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4774449 |
Transformerless battery charger in combination with a battery, and method of charging a battery
A transformerless battery charger having a circuit for connecting the battery to an A.C. power source to supply charging current to the battery including: an inductive impedance in series with the...
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4746852 |
Controller for battery charger
A controller for a battery charger terminates battery charging operation as a function of a time derivative of measured battery voltage. The controller has analog and digital embodiments. A...
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4740739 |
Battery charging apparatus and method
A battery charger and associated method for charging a DC battery utilizes a step-down transformer with high leakage reactance, and means for rectifying and regulating the step-down transformer...
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4736150 |
Method of increasing the useful life of rechargeable lithium batteries
The cycle life of rechargeable lithium batteries is significantly prolonged y applying to the battery as a charging mode a current interrupted at intervals of 1 milliseconds to 9 seconds in a...
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4731573 |
Method for charging electrical storage batteries
Apparatus and method for charging electrical storage batteries including an electrical source providing a forward flow of charging current of selected value and cyclical wave generator for cycling...
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4730153 |
Process of charging an electrochemical generator having zinc negative electrodes and an electrochemical generator for putting the process into practice
This invention relates to a process for charging a reversible electrochemical generator consisting of a plurality of cells, which are electrically in series, comprising a zinc negative electrode...
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4728877 |
Method and apparatus for improving electrochemical processes
An electrochemical process and apparatus utilizing a positive and negative electrode. A current is periodically provided in a first direction between the electrodes through the electrolyte of the...
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4700122 |
Power supply filtering with rechargeable battery element
A combined electrical filter and interrupted energy source for a space satellite or other DC powered apparatus. The disclosed filter battery preferably employs an array of nickel-cadmium cells each...
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4413221 |
Method and circuit for determining battery capacity
The capacity of a battery is determined while charging the battery by measuring the time it takes the battery voltage to decrease to a selected voltage level during discharging intervals...
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4385269 |
Battery charger
A battery charger is provided which supplies pulses of charging current to a battery and discharges the battery between each charging pulse. The change in the battery terminal voltage over a...
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4355275 |
Battery charger with current pulse regulation
A battery charger device characterized by a pair of cigarette lighter plugs having their negative contacts coupled together by a conductor and having their positive contacts coupled together by a...
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4253054 |
Phase controlled rectifier circuit for rapidly charging batteries
An improved battery charger circuit for rapidly charing a battery by increasing the rate of battery charge acceptance through periodic battery discharge during the charging process includes a pair...
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4211969 |
High efficiency circuit for rapidly charging batteries
An improved battery charger circuit for rapidly charging batteries by increasing the rate of battery charge acceptance through periodic battery discharge pulses during the charging process includes...
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4016473 |
DC powered capacitive pulse charge and pulse discharge battery charger
A battery charger receives electrical power from an external source of direct current electrical power. The power is received through a first inductor which supplies it to a second node. First...
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3881145 |
Pulse generating device for radar transmitting system
In a radar transmitting system including a charge and discharge circuit and a pulse generating circuit which is initiated by discharging of the charge and discharging circuit, a semiconductor...
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