Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1991-02-15
1993-04-20
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 8, 307 66, H02J 704, H02J 714
Patent
active
052046109
ABSTRACT:
A latching automatic dual battery switch employs a first comparator to determine that a condition requiring engagement of a secondary battery exists. For example, a primary battery voltage is below a predetermined threshold, current drawn from the primary battery exceeds a predetermined threshold or ambient temperature is below a predetermined threshold. Engagement of an ignition switch is detected and used to clock the output of the comparator to a trigger circuit. The trigger circuit activates the triggerable switch on the leading edge of a signal generated by the detector circuit to connect a secondary battery or power source in parallel with the primary power source. The trigger circuit is leading edge activated so that conditions immediately prior to engagement of the ignition switch determine if the secondary battery is engaged. This avoids engaging the secondary battery as a result of a load surge dragging down the voltage after activation of an ignition switch. In addition, when the ignition switch is released, a timing circuit is engaged to limit the additional time during which the secondary battery is switched in the circuit. The automatic engagement of the secondary battery eliminates the need for manually switching to an emergency backup and manually disengaging the emergency backup after a vehicle is started.
REFERENCES:
patent: 3165639 (1960-08-01), Hughes
patent: 3475221 (1969-10-01), Jordan et al.
patent: 3607403 (1971-09-01), Arrance
patent: 3823358 (1974-07-01), Rey
patent: 4239839 (1980-12-01), McDowall et al.
patent: 4447504 (1984-05-01), Goebel
patent: 4709202 (1987-11-01), Koenck et al.
patent: 4770954 (1988-09-01), Noordenbos
patent: 4883728 (1989-11-01), Witehira
patent: 5002840 (1991-03-01), Klebenow et al.
An Intelligent Two-In-One SLI Battery, Batteries International, Oct. 1990, pp. 12-13.
Buick Dealer Service Bulletin re: Special Policy (Power Reserve Battery System Conversion), Oct. 1985.
Publication re: Exide Switch. (Date unavailable).
Dougherty Thomas J.
Klassen Ronald C.
Pierson John R.
Globe-Union Inc.
Hickey R. J.
LandOfFree
Long lived dual battery with automatic latching switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Long lived dual battery with automatic latching switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long lived dual battery with automatic latching switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1528167