ELECTRIC POWER SOURCE SWITCHING APPARATUS, VEHICLE CONTROL APPARATUS, AND ELECTRIC POWER SOURCE SWITCHING METHOD

Title:

ELECTRIC POWER SOURCE SWITCHING APPARATUS, VEHICLE CONTROL APPARATUS, AND ELECTRIC POWER SOURCE SWITCHING METHOD

Document Type and Number:

WIPO Patent Application WO/2024/070194

Kind Code:

A1

Abstract:

Provided is an electric power source switching apparatus that is capable of inhibiting damage to a semiconductor switch even when there is a difference between the output voltages of a first electric power source and a second electric power source.　This electric power supply switching apparatus (1) comprises a first semiconductor switch (3a) that is connected to a first electric power supply source (2a), a second semiconductor switch (3b) that is connected to a second electric power supply source (2b), and a switch control device (7) that controls driving voltages (Vga, Vgb) of the first semiconductor switch and the second semiconductor switch.　When switching from one electric power supply source to the other electric power supply source among the first electric power supply source (2a) and the second electric power supply source (2b), the switch control device (7) provides an intermediate state in which the semiconductor switch that is connected to the electric power supply source supplying electric power after switching is kept in a non-saturated state, and changes the retention time of the intermediate state in accordance with a voltage difference between voltages (Va, Vb) that are outputted by the first electric power supply source and the second electric power supply source.

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Inventors:

NAKANO HIROSHI (JP)
KANEKAWA NOBUYASU (JP)
FUKUDA TAKAO (JP)
JUMONJI KENTARO (JP)

Application Number:

PCT/JP2023/028026

Publication Date:

April 04, 2024

Filing Date:

July 31, 2023

Export Citation:

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Assignee:

HITACHI ASTEMO LTD (JP)

International Classes:

H02J1/00; H02J7/00

Domestic Patent References:

WO2013076877A1

2013-05-30

Foreign References:

JP2019514328A	2019-05-30
JP2008067369A	2008-03-21

Attorney, Agent or Firm:

SHIN-YU INTERNATIONAL PATENT FIRM (JP)

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