Electrical power system for hybrid vehicles
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.
1. A vehicle electrical control system comprising:
a battery having modules connected in series, providing a high voltage output, and all connected in parallel, providing a low voltage output;
a switch system comprising:
electrical contacts selectively connecting the high voltage output to a high voltage bus and a low voltage bus;
a switch selectively electrically connecting the battery to both the high voltage bus and the low voltage bus or only the low voltage bus.
2. The control system of claim 1 wherein the modules include battery cells in a series cell connection, the series-connected cells being equally arranged in each of the modules.
3. The control system of claim 2 including an ignition module controlling the switch and 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 including an ignition module controlling the switch and wherein the ignition module connects the high voltage output 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 is a high/low voltage switch connected to the high and low voltage output and a low voltage switch connected to the low voltage output.
6. The control system of claim 5 wherein the switch 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 includes a change-over switch.
8. The system of claim 7 wherein the switch 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 including an ignition module controlling the switch and wherein the ignition module connects the high voltage output 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 output 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 modules connected in series for high voltage electrical output to a high voltage harness and all being connected in parallel for electrical output to a low voltage harness;
a switch system including an ignition module selectively electrically connecting the battery through the low voltage output to a low voltage bus via a single switch.
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.
15. The control system of claim 14 wherein the high/low voltage switch has a high/low voltage solenoid and the single switch has a low voltage connector solenoid, the ignition module controlling the high/low voltage solenoid and low voltage solenoid such that the high/low voltage switch is in electrical communication with a hybrid vehicle electrical system and the single 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 switch system includes 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 single switch is disconnected from the hybrid vehicle electrical system.