Power supply unit for electric motor vehicle

Details Power supply unit for electric motor vehicle Power supply unit for electric motor vehicle

1995-06-07

1996-06-18

Maples, John S.

Chemistry: electrical current producing apparatus, product, and

Cell support for removable cell

For plural cells

429100, 180 685, H01M 210

Patent

active

055276377

ABSTRACT:
A main switch with a low withstand voltage usable to prevent a leak current from flowing from a floated running power supply by way of the main switch even when the insulation between the main switch and the body grounding is reduced. A running power supply for supplying power to a running motor, which includes a plurality of batteries connected in series to each other, is kept in the floating state with respect to the body grounding. Moreover, there is provided a step-down DC-DC converter of an input-output insulation type. A diode and a main switch are provided from a battery constituting part of the running power supply in this order to supply a starting power or starting signal to the DC-DC converter for starting the DC-DC converter. Thus, power is supplied to the input side of the DC-DC converter from the running power supply, to obtain a step-down accessary power supply VB.

REFERENCES:
patent: 3623917 (1971-11-01), Chassoux
patent: 4136382 (1979-01-01), Ricci
patent: 4443523 (1984-04-01), Hasenauer

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