Controlled battery charging system
Patent
·
OSTI ID:5775620
This patent describes a controlled battery charging system for charging a battery having terminals. It comprises: a transformer having a primary coil connected to a source of alternating current, and a secondary coil having output leads and a center tap, full wave rectifier means connected to the output leads to the secondary coil, the rectifier means including a pair of gate controlled rectifiers having direct current output leads, a battery charging circuit connected to the output leads to the rectifiers and having output means electrically contacting the terminals of a battery to be charged, a unijunction relaxation oscillator circuit connected to the rectifiers to trigger the gate controlled rectifiers into conduction to produce a DC charging current in the charging circuit, an electronic current limiting control circuit comprising a current limiting amplifier having a positive input, a negative input, and an output, a resistive line connected to center tap, a negative input lead connecting the center tap to the negative input of the current limiting amplifier, voltage input means connected to the positive input for supplying a voltage to the current limiting amplifier more positive than a voltage supplied to the negative input, voltage supply means connecting the current limiting amplifier to the battery charging circuit, and control means connecting the output of the current limiting amplifier to the unijunction relaxation oscillator circuit operative to turn off the DC charging circuit when the charging current exceeds a predetermined current value.
- Assignee:
- Perma-Charger, Inc., Hermitage, TN (United States)
- Patent Number(s):
- US 5029266; A
- Application Number:
- PPN: US 7-469307
- OSTI ID:
- 5775620
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
24 POWER TRANSMISSION AND DISTRIBUTION
240100 -- Power Systems-- (1990-)
25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
AC SYSTEMS
BATTERY CHARGING
CONTROL SYSTEMS
DESIGN
ELECTRIC BATTERIES
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
EQUIPMENT
POWER SYSTEMS
RECTIFIERS
TRANSFORMERS
240100 -- Power Systems-- (1990-)
25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
AC SYSTEMS
BATTERY CHARGING
CONTROL SYSTEMS
DESIGN
ELECTRIC BATTERIES
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
EQUIPMENT
POWER SYSTEMS
RECTIFIERS
TRANSFORMERS