Soft hybrid-electric vehicle power supply circuit

Electrical transmission or interconnection systems – Plural load circuit systems – Selectively connected or controlled load circuits

Reexamination Certificate

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Details

C307S009100, C307S010100, C180S065100

Reexamination Certificate

active

07030511

ABSTRACT:
A soft hybrid-electric vehicle power supply circuit (14) is provided. The circuit includes a load sensor (19), which generates a load signal. A high-voltage bus (26) supplies a high voltage for a high-voltage load (30) and a low-voltage bus (28) is electrically coupled to and supplying a low-voltage to a low-voltage load (32). A converter circuit (24) is electrically coupled to the high-voltage bus (26), the low-voltage bus (28), and a high-voltage load (30). The converter circuit (24) maintains a predetermined minimum voltage level on the high-voltage load (30) by switching between the high-voltage bus (26) and the low-voltage bus (28) in response to the load signal. A method of maintaining the predetermined minimum voltage level is also provided.

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patent: 5796175 (1998-08-01), Itoh et al.
patent: 5998884 (1999-12-01), Kitamine et al.
patent: 6177734 (2001-01-01), Masberg et al.
patent: 6191558 (2001-02-01), Arai et al.
patent: 6304056 (2001-10-01), Gale et al.
patent: 6365983 (2002-04-01), Masberg et al.

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