BATTERY SAVING CIRCUIT

• US 20090283389A1
• Filed: 05/16/2008
• Published: 11/19/2009
• Est. Priority Date: 05/16/2008
• Status: Abandoned Application

• Current Assignee: Tyco Electronics Brasil LTDA (TE Connectivity Limited)
• Original Assignee: Tyco Electronics Brasil LTDA (TE Connectivity Limited)
• Inventors: De Oliveira, Elias Gomes, Venancio, Cesar, Da Silva, Wilson Nogueira
• Application Number:
  US12/122,335
• Publication Number:
  US 20090283389A1
• Time in Patent Office: Days
• US Class Current: 200/61.58R
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: H02J 2310/46 for ICE-powered road vehicles
• CPC Class Codes: H02J 9/002 in which a reserve is maintained in an energy source by disconnecting non-critical loads, e.g. maintaining a reserve of charge in a vehicle battery for starting an engine
• CPC Class Codes: Y02T 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

A battery saving circuit is provided for protecting and maintaining the charge within a battery of a vehicle. The vehicle includes a power source, a battery, a plurality of electrical loads, and an ignition switch that includes an off position wherein the power source is not operating. The battery saving circuit includes at least one save switch configured to be electrically connected between the battery and a sub-set of the plurality of electrical loads of the vehicle. The at least one switch is operatively connected to the ignition switch of the vehicle such that the sub-set of electrical loads are always electrically disconnected from the battery when the ignition switch is in the off position.

Claims

1. A battery saving circuit for protecting and maintaining the charge within a battery of a vehicle, wherein the vehicle includes a power source, a battery, a plurality of electrical loads, and an ignition switch that includes an off position wherein the power source is not operating, said battery saving circuit comprising:

at least one save switch configured to be electrically connected between the battery and a sub-set of the plurality of electrical loads of the vehicle, the at least one switch being operatively connected to the ignition switch of the vehicle such that the sub-set of electrical loads are always electrically disconnected from the battery when the ignition switch is in the off position.

2. The battery saving circuit according to claim 1, wherein the sub-set of the plurality of electrical loads of the vehicle is a single electrical load.

3. The battery saving circuit according to claim 1, wherein the sub-set of the plurality of electrical loads of the vehicle comprises more than one electrical load, the at least one save switch comprising a plurality of save switches, each save switch corresponding to a different electrical load of the sub-set of electrical loads, each save switch being configured to be electrically connected between the corresponding electrical load and the battery for electrically connecting and disconnecting the electrical load from the battery.

4. The battery saving circuit according to claim 1, wherein the save switch comprises a rating of less than approximately 60 Amperes.

5. The battery saving circuit according to claim 1, wherein the save switch comprise a relay that is configured to be electrically connected to the ignition switch such that switching of the ignition switch from the off position to an on position energizes the relay to thereby close the save switch such that the at least one electrical load of the subset of electrical loads is electrically connected to the battery.

6. The battery saving circuit according to claim 1, further comprising a fuse configured to be electrically connected between the battery and at least one electrical load of the sub-set of electrical loads.

7. The battery saving circuit according to claim 1, wherein the vehicle further comprises a fuse box electrically connected between the battery and at least some of the plurality of electrical loads of the vehicle, wherein the save switch is configured to be electrically connected to the fuse box such that the battery saving circuit is electrically connected between the battery and the sub-set of the electrical loads of the vehicle.

8. The battery saving circuit according to claim 1, wherein the vehicle further comprises a fuse box electrically connected between the battery and at least some of the plurality of electrical loads of the vehicle, wherein the save switch comprises an electrical input and an electrical output that are configured to be electrically connected to the fuse box in place of a fuse such that the save switch is electrically connected between the battery and at least one electrical load of the sub-set of electrical loads for electrically connecting and disconnecting the at least one electrical load from the battery.

9. The battery saving circuit according to claim 1, wherein the sub-set of the plurality of electrical loads of the vehicle comprises an electrical load that, without the battery saving circuit, would use intermittent or continuous electrical power from the battery when the ignition switch is in the off position.

10. The battery saving circuit according to claim 1, wherein the sub-set of the plurality of electrical loads of the vehicle comprises an electrical load that, without the battery saving circuit, would be available to receive electrical power from the battery when the ignition switch is in the off position.

11. An electrical system for a vehicle having a power source and a plurality of electrical loads, said system comprising:

a battery;

an ignition switch operatively connected to the battery and an ignition system of the power source for selectively turning the ignition system of the power source on and off, the ignition switch having an off position wherein the power source is not operating;

a battery saving circuit for protecting and maintaining a charge within the battery, the battery saving circuit being electrically connected between the battery and a sub-set of the plurality of electrical loads of the vehicle, the battery saving circuit being operatively connected to the ignition switch of the vehicle such that the sub-set of electrical loads are always electrically disconnected from the battery when the ignition switch is in the off position.

12. The electrical system according to claim 11, wherein the sub-set of the plurality of electrical loads of the vehicle comprises more than one electrical load, the battery saving circuit comprising a plurality of save switches, each save switch corresponding to a different electrical load of the sub-set of electrical loads, each save switch being electrically connected between the corresponding electrical load and the battery for electrically connecting and disconnecting the electrical load from the battery.

13. The electrical system according to claim 11, wherein the battery saving circuit comprises a save switch electrically connected between the battery and at least one electrical load of the sub-set of electrical loads for electrically connecting and disconnecting the at least one electrical load from the battery.

14. The electrical system according to claim 13, wherein the save switch comprises a relay that is electrically connected to the ignition switch such that switching of the ignition switch from the off position to an on position energizes the relay to thereby close the save switch such that the at least one electrical load is electrically connected to the battery.

15. The electrical system according to claim 11, wherein the battery saving circuit comprises a save switch electrically connected between the battery and at least one electrical load of the sub-set of electrical loads for electrically connecting and disconnecting the at least one electrical load from the battery, the save switch having a rating of less than approximately 60 Amperes.

16. The electrical system according to claim 11, wherein the battery saving circuit comprises a save switch electrically connected between the battery and at least one electrical load of the sub-set of electrical loads for electrically connecting and disconnecting the at least one electrical load from the battery, the battery saving circuit further comprising a controller operatively connected to the ignition switch for receiving an electrical signal from the ignition switch that indicates whether the ignitions switch is at least one of on and off, the controller opening and closing the switch based on the received electrical signal.

17. The electrical system according to claim 11, wherein the battery saving circuit comprises a fuse electrically connected between the battery and at least one electrical load of the sub-set of electrical loads.

18. The electrical system according to claim 11, further comprising a fuse box electrically connected between the battery and at least some of the plurality of electrical loads of the vehicle, wherein the battery saving circuit is electrically connected to the fuse box such that the battery saving circuit is electrically connected between the battery and the sub-set of the electrical loads of the vehicle.

19. The electrical system according to claim 11, further comprising a fuse box electrically connected between the battery and at least some of the plurality of electrical loads of the vehicle, wherein the battery saving circuit includes a save switch comprising an electrical input and an electrical output that are configured to be electrically connected to the fuse box in place of a fuse such that the save switch is electrically connected between the battery and at least one electrical load of the sub-set of electrical loads for electrically connecting and disconnecting the at least one electrical load from the battery.

20. The electrical system according to claim 11, wherein the sub-set of the plurality of electrical loads of the vehicle comprises an electrical load that, without the battery saving circuit, at least one of would use intermittent or continuous electrical power from the battery when the ignition switch is in the off position, and would be available to receive electrical power from the battery when the ignition switch is in the off position.