DC to DC battery charger
Patent
·
OSTI ID:6781393
A DC to DC battery charger is described for a vehicle comprising: adapter plug means for making electrical connections to a first battery through a cigarette lighter socket in the vehicle; means of making electrical connections to a second battery to be charged; a DC to AC converter and an AC to DC rectifier for elevating the voltage from the first battery to a voltage above that of the second battery; integrated circuit means for generating a pulse width modulated current as a function for the charged condition of the second battery; transistor switch means supplied with the pulse width modulated current for developing a charging voltage; a choke coil and a capacitor serially connected to the transistor switch means; and a diode connected across the choke coil and the capacitor whereby the capacitor is charged during pulses of current from the transistor switch means through the choke coil. The choke coil reverses polarity at the termination of the pulses of current and continues to charge the battery through the diode. The DC rectified voltage is controlled by the integrated circuit means for regulating current through the choke coil.
- Assignee:
- A.G. Busch and Co., Inc., Chicago, IL
- Patent Number(s):
- US 4638236
- OSTI ID:
- 6781393
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
33 ADVANCED PROPULSION SYSTEMS
330300 -- Advanced Propulsion Systems-- Electric-Powered Systems
BATTERY CHARGERS
BATTERY CHARGING
CAPACITORS
CONDUCTOR DEVICES
CONNECTORS
DC TO DC CONVERTERS
DESIGN
ELECTRIC BATTERIES
ELECTRIC COILS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
EQUIPMENT
INTEGRATED CIRCUITS
INVERTERS
MICROELECTRONIC CIRCUITS
OPERATION
PULSE TECHNIQUES
RECTIFIERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SWITCHING CIRCUITS
TRANSISTOR SWITCHING CIRCUITS
VEHICLES
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
33 ADVANCED PROPULSION SYSTEMS
330300 -- Advanced Propulsion Systems-- Electric-Powered Systems
BATTERY CHARGERS
BATTERY CHARGING
CAPACITORS
CONDUCTOR DEVICES
CONNECTORS
DC TO DC CONVERTERS
DESIGN
ELECTRIC BATTERIES
ELECTRIC COILS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
EQUIPMENT
INTEGRATED CIRCUITS
INVERTERS
MICROELECTRONIC CIRCUITS
OPERATION
PULSE TECHNIQUES
RECTIFIERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SWITCHING CIRCUITS
TRANSISTOR SWITCHING CIRCUITS
VEHICLES