Power supply system

Patent metadata

Field	Value
Publication number	US-2020247227-A1
Application number	US-202016857529-A
Country	US
Kind code	A1
Filing date	Apr 24, 2020
Priority date	Nov 27, 2017
Publication date	Aug 6, 2020
Grant date	—

Abstract

A power supply system includes a high voltage battery, a high-voltage power distribution unit that distributes high-voltage power supply from the high voltage battery, a power conversion unit that converts high-voltage power supply supplied from the high-voltage power distribution unit to low-voltage power supply, and a low-voltage power distribution unit that distributes low-voltage power supply from the power conversion unit. The high-voltage power distribution unit branches output into at least two systems and distributes the high-voltage power supply to a drive module for driving a vehicle by power of the high-voltage power supply and to the power conversion unit.

First claim

What is claimed is:

1 . A power supply system comprising:
a high voltage battery; a high-voltage power distribution unit that distributes high-voltage power supply from the high voltage battery; a power conversion unit that converts high-voltage power supply supplied from the high-voltage power distribution unit to low-voltage power supply; and a low-voltage power distribution unit that distributes low-voltage power supply from the power conversion unit, wherein the high-voltage power distribution unit branches output into at least two systems and distributes the high-voltage power supply to a drive module for driving a vehicle by power of the high-voltage power supply and to the power conversion unit, and the high voltage battery, the high-voltage power distribution unit, the power conversion unit, and the low-voltage power distribution unit are incorporated in a high voltage battery pack disposed outside the drive module, or the high voltage battery and the high-voltage power distribution unit are incorporated in a high voltage battery pack disposed outside the drive module, and the power conversion unit and the low-voltage power distribution unit are incorporated in a converter module disposed outside the drive module and the high voltage battery pack.

2 . The power supply system according to claim 1 , further comprising
a second control unit that communicates with a first control unit included in the drive module to control power supply to the drive module.

3 . The power supply system according to claim 1 , further comprising
a low voltage battery, wherein the low-voltage power distribution unit branches into two systems and low-voltage power supply is supplied from the power conversion unit and the low voltage battery.

4 . The power supply system according to claim 1 , wherein
the high-voltage power distribution unit and the drive module that requires power of the high-voltage power supply are connected via a high-voltage cable, the low-voltage power distribution unit and a low-voltage module including a predetermined load which requires power of the low-voltage power supply are connected via a low-voltage cable, and the drive module and the low-voltage module are respectively connected to the power supply system in units of modules.

5 . The power supply system according to claim 4 , wherein
the high-voltage cable and the low-voltage cable include one power supply line, one ground line, and a communication line.

6 . The power supply system according to claim 4 , wherein
the high-voltage cable and the low-voltage cable have different specifications.

7 . The power supply system according to claim 6 , wherein
a plurality of the drive modules which require power of the high-voltage power supply use the high-voltage cable in common, and the low-voltage modules which require power of the low-voltage power supply use the low-voltage cable in common.

8 . The power supply system according to claim 4 , wherein
the high-voltage cable and the low-voltage cable are configured of a common electric wire and common connectors are provided at both ends of the electric wire, and each of the high-voltage power distribution unit and the low-voltage power distribution unit is provided with a common insertion port which is fitted to the connector.

9 . The power supply system according to claim 4 , wherein
the high-voltage cable and the low-voltage cable are configured of a common electric wire, one end of the electric wire is extended from the drive module or the low-voltage module, and a common connector is provided at the other end of the electric wire, and each of the high-voltage power distribution unit and the low-voltage power distribution unit is provided with a common insertion port which is fitted to the connector.

10 . The power supply system according to claim 1 , wherein
a plurality of units each including the power conversion unit and the low-voltage power distribution unit are provided.

11 . The power supply system according to claim 1 , further comprising
a power supply circuit which converts direct current to alternating current, wherein the power supply circuit converts the high-voltage power supply supplied from the high-voltage power distribution unit into alternating current and supplies the alternating current to the drive module.

12 . The power supply system according to claim 1 , further comprising
a non-contact charging unit.

Assignees

• Yazaki Corp

Inventors

• Kawamura Yuta
• Oda Shinya
• Ito Masahiro

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• B60R16/033 Primary

  characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) · CPC title

• H02J1/082

  DC supplies with two or more different DC voltage levels · CPC title