System for preventing damage to a battery charger due to applica

Details System for preventing damage to a battery charger due to applica System for preventing damage to a battery charger due to applica

1980-05-06

1983-04-12

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

361246, H02J 700

Patent

active

043799892

ABSTRACT:
The electrical system of a motor vehicle is protected against damage due to voltage sources, either the own battery or an external source, connected with wrong polarity by the combination of a diode and relay switches. In one embodiment, the diode is connected to the battery so that current flows only when the battery is connected with the correct polarity. The relay coil connected in series with the diode controls contacts which connect the battery to the rest of the circuit only when current flows through the diode. Alternatively, or in conjunction with this type of circuit, a shunting diode can be provided through which current flows only when the battery is connected with incorrect polarity. When current flows through this shunting diode, it also flows through the contacts of excess current cutout which then open to disconnect the battery from the remainder of the circuit.

REFERENCES:
patent: 3307097 (1967-02-01), Brewster
patent: 3313995 (1967-04-01), Bach et al.
patent: 3659183 (1972-04-01), Carlson

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