Battery charger

Patent · Mon Jan 13 23:00:00 EST 1986

OSTI ID:6130066

Jurjans, O

This patent describes a battery charge composed of a number of interrelated components. The first component is a means for developing DC voltage from AC line voltage. An integral part of the system is a switching means, including a transformer and a pair of field effect transistors connected in half-bridge configuration, for chopping DC voltage to produce pulse trains. The secondary winding of the transformer is split and is connected between the gate and source of the respective FETs. A step-down transformer of the system converts the pulse trains from high-voltage low-current pulse trains to low-voltage high-current pulse trains and a rectifying means for converting this final pulse output to an output DC voltage and charging current (DC) which is coupled by an output means to a battery which is to be charged. A modality for supplying an output voltage reference signal representing a predetermined output voltage as well as supplying an overload voltage reference signal representative of an excessive overload caused by a battery to be charged is included. A control means responsive to output voltage and overload signal for controlling the operation of FETs is vital to the system also.

• Assignee: Jetronic Ind., Inc., Philadelphia, PA
• Patent Number(s): US 4564800
• OSTI ID: 6130066
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALTERNATING CURRENT
BATTERY CHARGERS
BATTERY CHARGING
CONTROL SYSTEMS
CURRENTS
DESIGN
ELECTRIC BATTERIES
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRONIC CIRCUITS
EQUIPMENT
FIELD EFFECT TRANSISTORS
PULSE CIRCUITS
SEMICONDUCTOR DEVICES
SIGNALS
TRANSFORMERS
TRANSISTORS