Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1975-03-05
1977-02-01
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 22, 320 35, 320 37, H02J 700
Patent
active
040063968
ABSTRACT:
Battery charging apparatus for charging batteries having different optimum charging rates, and wherein there is included in the same housing with the battery an electrical element having a characteristic related to a predetermined charging rate of the battery. Terminals are provided on the housing for the battery and the electrical element, for connection to the charging apparatus, and the charging apparatus utilizes the value of the characteristic of the element to control the supply of charging current to the battery. The electrical element provided with the battery may be a resistor, and the charging apparatus connects the resistor in a circuit to develop a control potential which is utilized to control the charging current. This control potential operates through a regulator to control the current through a resistance which is connected to the base of a transistor which controls the charging current. The current through the resistance controls the potential developed thereacross to provide a control potential at the base of the transistor to thereby control the charging current. An improved timer including four IC comparators may be utilized to control the length of time charging current is applied to the battery. Also, if the battery includes a heat sensitive element, such as a thermistor, circuitry is provided for sensing the presence and value of the thermistor and supplying a suitable rapid charge current to the battery. A pair of light emitting diodes are connected to the charging circuit to indicate when charging current is supplied to the battery.
REFERENCES:
patent: 3382425 (1968-05-01), Legatti
patent: 3667026 (1972-05-01), Bogut et al.
patent: 3767995 (1973-10-01), Kaminski et al.
Gillman James W.
Hickey Robert J.
Motorola Inc.
Parsons Eugene A.
Southard Donald B.
LandOfFree
Universal battery charging apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Universal battery charging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal battery charging apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1093300