IP Library › Granted Patent US 11,021,062
Granted Patent B2
US 11,021,062 · App. 16/459,642 · Granted Jun 1, 2021

Vehicle power supply device

Inventor: Hideaki Shirahashi (Kanagawa, JP)
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
B60L3/00B60L1/00B60L3/0046B60L3/0084B60L58/10B60L58/20B60R16/03B60L2210/10B60L2240/547H02J2207/20H02J2310/48Y02T10/70Y02T10/72Y02T90/14
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Quick Facts
Patent No.
US 11,021,062
App. No.
16/459,642
Granted
Jun 1, 2021
Kind
B2
Abstract

A vehicle power supply device includes a first DC/DC converter, a DC/DC controller, a second DC/DC converter, and a vehicle controller. The first DC/DC converter converts a voltage output from a power source, and outputs the converted voltage to a first load. The DC/DC controller controls an operation of the first DC/DC converter. The second DC/DC converter operates by electric power supplied from the power source, and converts the voltage output from the power source and outputs the converted voltage to the DC/DC controller. The vehicle controller controls the DC/DC controller and the first load by supply of the voltage output from the first DC/DC converter and the voltage output from the second DC/DC converter.

Claims (17)

1. A vehicle power supply device, comprising:

a first DC/DC converter configured to convert a voltage output from a power source and output the converted voltage to a first load;

a DC/DC controller configured to control an operation of the first DC/DC converter;

a second DC/DC converter configured to operate by electric power supplied from the power source, and convert the voltage output from the power source and output the converted voltage to the DC/DC controller; and

a vehicle controller configured to control the DC/DC controller and the first load by supply of the voltage output from the first DC/DC converter and the voltage output from the second DC/DC converter,

wherein the voltage output from the first DC/DC converter is higher than the voltage output from the second DC/DC converter.

2. The vehicle power supply device according to claim 1 , further comprising a diode,

the diode including:

an anode connected to the first DC/DC converter; and

a cathode connected to the vehicle controller.

3. The vehicle power supply device according to claim 1 , further comprising

a relay configured to selectively connect and disconnect the power source and the first DC/DC converter,

wherein the second DC/DC converter is connected in parallel to the relay and the first DC/DC converter with respect to the power source.

4. The vehicle power supply device according to claim 3 ,

wherein the vehicle controller is configured to put the relay into the non-conductive state upon detecting that a voltage of the power source becomes equal to or lower than a predetermined voltage.

5. The vehicle power supply device according to claim 3 ,

wherein a second load is provided to be connected in parallel to the first DC/DC converter with respect to the relay.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 28, 2024
From: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
To: PANASONIC AUTOMOTIVE SYSTEMS CO., LTD.
Reel/Frame 066703/0177 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 2, 2019
From: SHIRAHASHI, HIDEAKI
To: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Reel/Frame 051154/0983 →
Priority Claims (1)
JP JP2017-044705 · Mar 9, 2017 · national
Continuity (2)
Continuation PCTJP2017037308 · Oct 16, 2017
Related Publication 20190322177A1 · Oct 24, 2019
Cited By (1)
US 12,381,488