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7612524 |
Motor vehicle battery disconnect circuit having electronic disconnects
An electronic disconnect switch module ( 12 ) in a motor vehicle has one or more pairs of high-current, high-side solid state switch devices ( 30 A, 30 B, 32 A, and 32 B). The source terminal of...
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7602151 |
Charger with output voltage compensation
A charger with output voltage compensation includes an AC/DC circuit, an output interface, a charge controller, and a compensator. The AC/DC circuit converts an AC source into a DC source. The...
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7592780 |
Battery charging apparatus
A battery charging apparatus includes a switching power source supplying a current to a battery pack, an input voltage detecting unit detecting an input voltage of the switching power source, a...
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7570026 |
Protection circuit with minimized voltage reference unevenness between charger and battery pack
A protection circuit comprising: a second circuit to be connected to a first circuit, the first circuit including: a first reference voltage generating circuit configured to generate a first...
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7570022 |
Variable battery refresh charging cycles
A refresh control system that selectively initiates a refresh charge cycle includes an energy storage device and an electric machine that is operable to charge the energy storage device. A control...
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7567062 |
Charging circuit
A charging circuit for charging a rechargeable battery ( 70 ) includes a charge management unit ( 40 ), a comparator ( 80 ) and a changeover switch ( 60 ). The changeover switch ( 60 ) includes a...
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7560902 |
Duty cycle controller for high power factor battery charger
A duty cycle controller apparatus for producing a duty cycle signal for controlling switching of switches of a battery charger having an AC input for receiving power and an output for supplying...
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7554298 |
Charger and integrated circuit having first and second charging currents
A charger of the present invention includes a charging transistor and a charging integrated circuit. The charging transistor is series-connected with a secondary battery to supply a charging...
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7550951 |
Two-step battery charger
A two-step charger includes an AC/DC power supply, a transformer, a compensator, a controller, a comparator and an isolating controller. The comparator detects whether a battery is connected to the...
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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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7541780 |
Charge controlling circuit, charge controlling method, and electronic device provided with same charge controlling circuit
A charge controlling circuit is provided in which a temperature of a main body of a portable cellular phone or an ambient temperature thereof is detected by a temperature sensor and, when the...
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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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7528581 |
Battery apparatus for controlling plural batteries and control method of plural batteries
Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the...
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7505856 |
Battery test module
A storage battery includes a battery housing and a plurality of electrochemical cells in the battery housing electrically connected to terminals of the battery. A battery test module is mounted to...
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7501794 |
System, method and semiconductor device for charging a secondary battery
A semiconductor device includes an adjustable current source that is coupled to an external battery. The semiconductor device includes a feedback control module that is responsive to a voltage...
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7486034 |
Power supply device for vehicle and method of controlling the same
A power supply device for a vehicle includes a battery serving as a first electric storage device, a battery serving as a second electric storage device, a motor generator driving a wheel, a...
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7474079 |
Battery charger with backup charging circuit
A charger capable of safely charging an apparatus even when the current limit value of an external power supply is less than the maximum charging current of the charger or when the battery voltage...
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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...
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7405539 |
Battery charger for preventing charging currents from overshooting during mode transition and method thereof
The present invention provides a battery charger and a method for preventing an overshoot charging current during a mode transition. The battery charger includes a charging regulation circuit for...
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7391183 |
System for controlling charging of secondary battery
To provide a system for controlling the charging of a secondary battery (battery), which is capable of keeping an initial charging/discharging characteristic of the battery in consideration of a...
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7378819 |
Systems and methods for regulating pulsed pre-charge current in a battery system
Systems and methods for regulating pre-charge current in a battery system, such as a battery system of an information handling system, by controlling duty cycle of the charging current provided to...
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7276881 |
Protection method, control circuit, and battery unit
A protection method for preventing battery cells from over-discharging and being overcharged, a control circuit, and a battery unit are provided. In the protection method, when a set signal “1”...
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7039534 |
Charging monitoring systems
An electronic system for the continuous monitoring of voltage charge within the electrical system of a motor vehicle having an electrical generation source and a secondary electrochemical cell or...
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6958591 |
Battery charging safety circuit for simultaneous startup and rapid surge current clamping
A safety circuit monitors a charging signal supplied by a charging circuit for charging a battery. Damage to the battery may occur when the voltage at the input terminal of the battery rises above...
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6771043 |
Power tools
Battery-powered tools may include battery 1 or battery pack BP and a drive source (e.g., motor M) for generating power using current supplied from the battery. A switch 3 may electrically...
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6734652 |
Battery charging safety circuit
A safety circuit monitors a charging signal supplied by a charging circuit for charging a battery. Damage to the battery may occur when the voltage at the input terminal of the battery rises above...
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6528972 |
Voltage detection controlled shunt and voltage division circuit for a charging device
A charging device with shunt and voltage division control by voltage detection is arranged to limit the charging current by shunting it, and further to control a main switch connected in series...
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6476311 |
Portable multiple power supply comprising solar cell
The present invention relates to a type of portable emergency power supply for use when storage batteries of mobile appliances such as cellular telephones, radios, camcorders, laptops and mini...
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6426608 |
Automobile and power supply system therefor
In an automobile power supply where plural voltages can be supplied, a plurality of batteries and a DC/DC converter are assumed to be unnecessary, and it is possible to operate even when the...
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6404151 |
Electric vehicle drive
An electric vehicle drive has an electric machine which can be alternatively driven as a motor or as a generator and has a d.c. connection to which a supply voltage can be applied, from a first...
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6362603 |
Battery charging apparatus
A battery charging apparatus comprising a controller to control on-off controllable switch elements of an AC power source output short circuit and including a first control section to control the...
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6353305 |
Battery charger where the charge current rate is set by a switch modulated with a variable duty cycle
A battery charging circuit, a method of charging a battery and a battery-powered electronic device employing the circuit or the method. In one embodiment, the battery charging circuit includes a...
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6275161 |
Method and apparatus for automotive battery condition indication
The present invention concerns a system and an apparatus for monitoring the electrical condition of an automotive battery [2] in use. The main purpose of this invention is to monitor and indicate...
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6255804 |
Method for charging a battery with maximum power tracking
Apparatus and attendant methodology for extracting maximum power from an energy source, such as a photo voltaic panel, an array of photo voltaic panels, or a windmill and delivering that power to a...
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6218811 |
Output variable charging circuit and charger incorporating same
An output variable charging circuit has a charging control circuit for controlling charging characteristics so as to satisfy a predetermined charging condition; and a charging characteristic...
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6211649 |
USB cable and method for charging battery of external apparatus by using USB cable
A USB cable according to the present invention has a USB connector connected with a USB port of a PC (Personal Computer), a phone connector connected with a connector of an external connector such...
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6194875 |
Controller for DC-DC converter
A DC--DC converter generates a system output current and a battery charging current. The converter has an output transistor connected between an AC adapter, which provides a supply current, and a...
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6181111 |
Permanent magnet alternator system for battery charging
A battery charging system may include a permanent magnet alternator. The system uses controlled rectifiers to supply charging output from an alternator to the battery, to control the charging...
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6163136 |
Transistor driven wall charger
A battery charger to recharge a battery comprises a transistor switch coupled with a cable loss compensator. Additionally, the battery charger includes a comparator, a current limiter, and a...
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6157173 |
Circuit and method for sharing current between a portable device and a battery charger
A power accessory for apportioning electrical current between an electronic device and a rechargeable battery used in connection with the device includes two current limiting circuits. The first...
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6104170 |
Method and circuit for preventing oscillations in a battery charger
Method and circuitry for clamping outputs of inactive error amplifiers in battery chargers eliminate delays and prevent oscillatory tendencies. By clamping the output of, for example, an inactive...
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6040685 |
Energy transfer and equalization in rechargeable lithium batteries
A method of charging a rechargeable lithium battery which comprises charging the battery with a charging current; sampling a charging voltage of the battery during charging to recognize potential...
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5990663 |
Charge/discharge control circuit and charging type power-supply unit
To enhance the performance as well as the reliability and safety of a charge/discharge control circuit and a charging type power-supply unit using it, a charge/discharge control circuit 102 is made...
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5969507 |
Battery life extender apparatus
Apparatus for extending the battery life of a seasonal-use battery. The apparatus is an improvement in a seasonal-use device having a battery charging system, wherein the battery charging system...
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5929604 |
Battery-discharge-protection system for electronic accessories used in vehicles containing a battery
The present invention measures the energy consumption of battery-powered telephone devices to prevent the inadvertent deep discharge of a vehicle's battery by prolonged use of said devices when the...
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5920181 |
Battery protection system and process for charging a battery
A battery protection system (20) controls a process for charging a battery pack (15). A hysteresis comparator (54) senses a charging current flowing through the battery pack (15) and switches off a...
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5903137 |
Battery pack with single charge inhibit/regulator transistor
A battery pack for use in a portable computing system includes a transistor that is used both for inhibiting charging of the batteries within the system and for limiting the voltage across the...
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5889387 |
Battery charging unit
A battery charging circuit, particularly useful in a laptop computer system, includes a voltage input terminal coupled to a dc voltage. A first switch couples the voltage input terminal to an...
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5883495 |
Bidirectional current control circuit suitable for controlling the charging and discharging of rechargeable battery cells
A bidirectional current control circuit suitable for use in controlling the charging and discharging of rechargeable battery cells includes two serially connected metal oxide semiconductor field...
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5872445 |
Power supply device having low internal power consumption and electronic appliances using said power supply device
A power supply device includes a secondary battery and a charger, and can further utilize an external D.C. power supply. A switch is interposed between a negative electrode of the secondary battery...
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