|
Match
|
Document |
Document Title |
|
|
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...
|
|
|
7525290 |
Charge control device for executing a plurality of charge stages
A battery is charged in a number of states, with a change from a third charge stage to a fourth charge stage (e.g., final stage) is executed when a battery voltage reaches a change voltage or when...
|
|
|
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...
|
|
|
7456610 |
Battery charging apparatus for charging a plurality of batteries
A battery charging apparatus having a plurality of charging units connected in series. A charging unit has a series switch connected in series with a rechargeable battery, and a parallel switch...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
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...
|
|
|
5617009 |
Rechargeable battery charging circuit which sets supplemental charging capacity according to ambient temperature
A battery charging circuit performs rapid charging without over-charging followed by supplementary charging to insure a fully charged rechargeable battery. The amount of supplementary charging is...
|
|
|
5467007 |
Charging apparatus
A charging apparatus capable of charging a secondary battery so that a utilization time thereof is not shortened is disclosed. When a microcomputer 63 judges that a voltage of the secondary battery...
|
|
|
5350995 |
Battery charger for charging both a frequently and infrequently used battery
A battery charger used to charge a battery has a voltage detector for detecting a voltage across a battery, a memory for storing detected voltage values, and a comparator for comparing a presently...
|
|
|
5331268 |
Method and apparatus for dynamically charging a battery
A charger (302) determines the voltage baseline of a battery (306) and establishes a voltage range based on the voltage baseline of battery (306). Once the rapid charge rate has terminated and the...
|
|
|
5319298 |
Battery maintainer and charger apparatus
A current limited, voltage regulated, battery maintainer and charger apparatus includes a circuit for monitoring and maintaining a 12 volt storage battery, determining the presence of forward...
|
|
|
5311113 |
Method of setting peak-timer of electric charger
A method for charging a storage battery includes providing an electric charger having a rapid charge voltage level and a trickle charge voltage level, a total-timer for measuring a total time which...
|
|
|
5307001 |
Battery charging method and apparatus
A battery charger employing the gassing point of a lead-acid battery to determine the end of charge time and voltage. A charging level sensor takes two voltage samples of a predetermined time...
|
|
|
5302887 |
Charging apparatus
A charging apparatus includes a microcomputer which turns a transistor on so as to supply a charging current from a constant current source to a battery pack incorporating a secondary battery. The...
|
|
|
5296797 |
Pulse modulated battery charging system
A pulse width modulated battery charging system that applies constant current at a set voltage acceptable to the battery under charge and applied by a 90% duty cycle pulse until approximately two...
|
|
|
5291117 |
Method and an apparatus for charging a battery
The present invention relates to a method and apparatus for controlling the charging of multi-cell batteries, for example, NiCd cells. The battery is connected to a battery charger for impressing a...
|
|
|
5237259 |
Charging method for secondary battery
A method of charging a secondary battery by means of a constant voltage power source for supplying a limited current. The method includes a first step of charging the secondary battery until a...
|
|
|
5218286 |
Multichannel battery charger
A battery charger includes a microcontroller for simultaneously and independently charging the batteries of a number of battery powered devices. The battery charger includes a constant current...
|
|
|
5202617 |
Charging station for electric vehicles
A charging station for electric vehicles which have rechargeable batteries is provided. The charging station comprises a power section controlled by a fast acting power controller, a power...
|
|
|
5196780 |
Ni-Cad battery charger circuit
An analog, low-cost nickel-cadmium battery charger including a fast charging current circuit and a slow charging current circuit, both of which are controlled by a comparator circuit which compares...
|
|
|
5184059 |
Expanded battery capacity identification scheme and apparatus
A battery charging system (10) includes a charging path (50) for charging batteries (14) which have a variety of different charging parameters requiring different optimum charging algorithms (58)....
|
|
|
5172045 |
Battery charger for mobile apparatus
A battery charger includes a switching circuit (8) for supplying the current to the timer (3) from the secondary battery (6). The battery charger also includes a detecting circuit (7) for...
|
|
|
5150033 |
Flat plate sealed lead-acid battery charging system and method
A preferred protective current limiter comprises a positive temperature coefficient (PTC) resistor which automatically assumes a relatively high impedance state quickly enough to prevent venting of...
|
|
|
5013992 |
Microprocessor controlled battery charger
A battery charger 10 includes a microprocessor device 12 coupled to a voltage to frequency converter 18 for determining a magnitude of a voltage potential appearing across a battery under charge....
|
|
|
4779035 |
End of charge detector
A method and apparatus for detecting the end of charge of a battery includes the steps of periodically changing, for a predetermined time period, the magnitude of charging current to a battery or...
|
|
|
4716353 |
Battery charger
A battery charging system including a plurality of transformers each having a primary winding, a secondary winding, and a tertiary windings, the primary windings being connected in series forming a...
|
|
|
4710694 |
Microprocessor controlled battery charger
A microprocessor controlled battery charger utilizes a high frequency switching circuit and a means to read the voltage of the battery plus a timer in the circuit wherein the microprocessor is...
|
|
|
4647834 |
Battery charger
This invention relates to a battery charger which includes a timer which becomes energized upon a battery approaching a fully charged condition and the timer then commences a preset timed...
|
|
|
4639655 |
Method and apparatus for battery charging
A method and apparatus are disclosed for charging series connected batteries, particularly nickel cadmium. The means and method described are used for charging single or multiple batteries. In the...
|
|
|
4609861 |
Circuit arrangement for rapidly charging a battery
A quick battery charger according to the present invention comprises a circuit for detecting the voltage of the battery (3), a constant-current charging circuit, a constant-voltage charging...
|
|
|
4609860 |
Battery charger having automatic deep discharge mode
A battery charger for recharging nickel cadmium batteries includes trickle charge, fast charge and deep charge modes. A control circuit responsive to the terminal voltage of the battery includes a...
|
|
|
4554500 |
Battery charging apparatus and method
A battery charging apparatus and method is disclosed. The battery charger includes a programmable two level constant current source having an inhibit input. A clock signal is fed to counting stages...
|
|
|
4551666 |
Quick charging apparatus
A quick charging apparatus capable of performing, in addition to normal charging operation for a secondary battery, a quick charging in the battery only a relatively small amount of energy required...
|
|
|
4513238 |
Automatic battery charger with thermal control
There is disclosed herein a battery charger, such as for use with compact low voltage batteries of the type used in consumer electronic products. The charger can sense both voltage and temperature...
|
|
|
4494062 |
Circuit assembly for charging an accumulation battery with pulsating direct current
The charging device contains a two-part conductor bar (18', 18"), the two parts of which can be connected by means of a contact pair (32). When the contact pair is closed, the conductor bar...
|