Electrical power system for hybrid vehicles

Patent metadata

Field	Value
Publication number	US-2015283964-A1
Application number	US-201414244077-A
Country	US
Kind code	A1
Filing date	Apr 3, 2014
Priority date	Apr 3, 2014
Publication date	Oct 8, 2015
Grant date	—

Abstract

A modular battery and power control system provides a range of electrical power to high voltage and low voltage power demand systems in a hybrid vehicle. The modular battery and power control system provides a dual voltage modular battery pack that provides both a high voltage output and a low voltage output. The modular battery pack is selectively connected to high voltage and low voltage demand systems by a switch system. The switch system is controlled by an ignition switch module which determines the electrical demands of the hybrid vehicle.

First claim

What is claimed is:

1 . A vehicle electrical control system comprising:
a battery having battery cells connected to provide a high voltage output to a high voltage harness and a low voltage output to a low voltage harness; a switch system comprising:
electrical contacts that selectively connect a high voltage bus to at least one of the high voltage harness and the low voltage harness;
a solenoid;
an ignition module configured to control the solenoid to selectively electrically connect the battery to at least one of the high voltage bus and a low voltage bus.

2 . The control system of claim 1 wherein the battery cell connection is a series cell connection, the series-connected cells being equally arranged to form a plurality of modules, each of the modules being connected together in series for electrical communication to the high voltage harness and being connected together in parallel for electrical communication to the low voltage harness.

3 . The control system of claim 2 wherein the ignition module is configured to determine one of a run key position that supplies a high voltage and a low voltage power demand and an accessory key position that supplies only a low voltage power demand.

4 . The control system of claim 2 wherein the ignition module connects the high voltage harness to a DC/DC converter that supplies a low voltage power demand when the ignition module is actuated to a run key position.

5 . The control system of claim 4 wherein the switch system includes a high/low voltage switch connected to the high and low voltage harnesses and a low voltage switch connected to the low voltage harness.

6 . The control system of claim 5 wherein the solenoid has a high/low voltage solenoid and a low voltage connector solenoid, the ignition module controlling the high/low voltage solenoid and the low voltage solenoid such that the high/low voltage switch is in electrical communication with a hybrid vehicle electrical system and the low voltage switch is disconnected from the hybrid vehicle electrical system.

7 . The control system of claim 4 wherein the switch system is a change-over switch.

8 . The system of claim 7 wherein the solenoid is a single change-over switch solenoid, the ignition module controlling the single change-over switch solenoid such that the high/low voltage switch is in electrical communication with a hybrid vehicle electrical system and the low voltage switch is disconnected from the hybrid vehicle electrical system.

9 . The control system of claim 2 wherein the ignition module connects the high voltage harness to a high voltage electrical power demand when the ignition module is actuated to a run key position.

10 . The control system of claim 9 wherein the ignition module disconnects the high voltage harness from the high voltage electrical power demand when the ignition module is actuated to an accessory key position.

11 . A vehicle electrical control system comprising:
a battery having battery cells in a series cell connection, the series-connected cells being arranged to form modules connected together in series for high voltage electrical connection to a high voltage harness and being connected together in parallel for electrical connection to a low voltage harness; a switch system including a solenoid, and an ignition module configured to control the solenoid to selectively electrically connect the battery to at least one of the high voltage bus and the low voltage bus.

12 . The control system of claim 11 wherein the ignition module is configured to determine one of a run key position that supplies a high voltage and a low voltage power demand and an accessory key position that supplies only a low voltage power demand.

13 . The control system of claim 11 wherein the ignition module connects the high voltage harness to a DC/DC converter that supplies a low voltage power demand when the ignition module is actuated to a run key position.

14 . The control system of claim 13 wherein the switch system includes a high/low voltage switch connected to the high and low voltage harnesses and a low voltage switch connected to the low voltage harness.

15 . The control system of claim 14 wherein the solenoid has a high/low voltage solenoid and a low voltage connector solenoid, the ignition module controlling the high/low voltage solenoid and the low voltage solenoid such that the high/low voltage switch is in electrical communication with a hybrid vehicle electrical system and the low voltage switch is disconnected from the hybrid vehicle electrical system.

16 . The control system of claim 13 wherein the switch system is a change-over switch.

17 . The system of claim 16 wherein the solenoid is a single change-over switch solenoid, the ignition module controlling the single change-over switch solenoid such that the high/low voltage switch is in electrical communication with a hybrid vehicle electrical system and the low voltage switch is disconnected from the hybrid vehicle electrical system.

Assignees

• Ford Global Tech Llc

Inventors

• Janarthanam Suriyaprakash A

Classifications

• B60L50/16

  with provision for separate direct mechanical propulsion · CPC title

• B60L50/51

  characterised by AC-motors · 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

• B60L50/66

  Arrangements of batteries · CPC title

• B60L2210/10

  DC to DC converters · CPC title