Battery fluid dispenser integrated into battery charging connector

• US 20050258802A1
• Filed: 05/18/2004
• Published: 11/24/2005
• Est. Priority Date: 05/18/2004
• Status: Abandoned Application

• Current Assignee: Aerovironment
• Original Assignee: Aerovironment
• Inventors: Buchanan, William D., Dickinson, Blake E.
• Application Number:
  US10/848,872
• Publication Number:
  US 20050258802A1
• Time in Patent Office: Days
• US Class Current: 320/112
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• CPC Class Codes: H01M 50/609 Arrangements or processes for filling with liquid, e.g. electrolytes
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A watering connection is integrated with a battery charging connector to form an integrated charging and watering connector. The integrated charging and watering connector selectively couples fluid from a fluid supply and a charging voltage from a battery charger to one or more batteries of a battery pack. At an appropriate time, such as after charging or equalization of the batteries of the battery pack, the charger transmits a control signal to a fluid supply control valve. The control signal opens the control valve, thereby allowing cells of the batteries of the battery pack to be replenished. Check valves coupled to the cells of the batteries of the battery pack can be used to halt the filling of cells. Alternatively, a fluid level detector monitors the fluid level in the cells. If not adequately filled, the fluid level detector transmits a sense signal back to the charger. The charger then issues a control signal to open the fluid supply control valve. Fluid is then allowed to fill the cells until the fluid level detector determines that the cells are adequately filled.

Claims

1. An integrated electrical and watering connector for use in a battery charging and watering system, comprising:

a first half having a fluid inlet port and an electrical input port; and

a second half having a fluid outlet port and an electrical output port, wherein, when the first and second halves are connected, the fluid inlet port of the first half is configured to receive fluid and direct the received fluid to the fluid outlet port of the second half, and the electrical input port is in electrical contact with the electrical output port.

2. The integrated electrical and watering connector of claim 1 wherein the fluid outlet port of the second half of the connector is configured so that it can be coupled to a fluid receiving port of a fluid distribution system of one or more batteries, and the electrical output port is configured so that it can be electrically coupled to electrical terminals of the one or more batteries.

3. The integrated electrical and watering connector of claim 2 wherein the fluid inlet port is configured so that it can selectively receive fluid for replenishing fluid in cells of the one or more batteries.

4. The integrated electrical and watering connector of claim 3 wherein the electrical input and output ports, when in electrical contact with one another, are configured so that a charging voltage can be selectively coupled to the electrical terminals of the one or more batteries.

5. The integrated electrical and watering connector of claim 1, further comprising a check valve coupled to the fluid inlet port.

6. The integrated electrical and watering connector of claim 1, further comprising a check valve coupled to the fluid outlet port.

7. The integrated electrical and watering connector of claim 1 wherein said fluid is a fluid selected from the group consisting of water, tap water, purified water, distilled water, deionized water, acid and electrolyte.

8. A method of charging and watering one or more batteries, comprising:

electrically coupling electrical terminals of one or more batteries to a first electrical port of a first half of an integrated charging and watering connector;

coupling a fluid distribution section between a fluid inlet port of said one or more batteries and a fluid outlet port of the first half of the connector;

connecting a second half of the connector to the first half of the connector so that, when connected, the fluid outlet port of the first half is coupled to a fluid inlet port of the second half, and a second electrical port of the second half is in electrical contact with the first electrical port of the first half.

9. The method of claim 8, further comprising applying a charging voltage to the second electrical port of the second half of the connector so that the charging voltage is coupled through the connector to the terminals of said one or more batteries.

10. The method of claim 9, further comprising applying the charging voltage to equalize cells of the one or more batteries.

11. The method of claim 8, further comprising:

selectively allowing fluid to enter the fluid inlet port of the second half of the connector; and

directing the fluid entering the fluid inlet port through the fluid outlet port of the second half of the connector and into cells of the one or more batteries.

12. The method of claim 11 wherein selectively allowing fluid to enter the fluid inlet port of the second half of the connector depends on whether a fluid supply control valve coupled to the fluid inlet port is open or closed.

13. The method of claim 12, further comprising measuring the fluid level of cells of the one or more batteries.

14. The method of claim 13, further comprising generating a fluid level sense signal indicative of the fluid level of cells of the one or more batteries.

15. The method of claim 14 wherein a value of the fluid level sense signal is used to determine whether the fluid supply control valve is open or closed.

16. The method of claim 10, further comprising:

selectively allowing fluid to enter the fluid inlet port of the second half of the connector; and

directing the fluid entering the fluid inlet port through the fluid outlet port of the first half of the connector and into cells of the one or more batteries.

17. The method of claim 16 wherein selectively allowing fluid to enter the fluid inlet port of the second half of the connector depends on whether a fluid supply control valve coupled to the fluid inlet port of the second half of the connector is open or closed.

18. The method of claim 8 wherein said fluid is a fluid selected from the group consisting of water, tap water, purified water, distilled water, deionized water, acid and electrolyte.

19. The method of claim 8, further comprising allowing fluid to be dispensed into cells of said one or more batteries.

20. The method of claim 19 wherein allowing fluid to be dispensed is performed after said one or more batteries is fully charged and/or equalized.

21. The method of claim 19 wherein allowing fluid to be dispensed is performed after a predetermined portion of a charging or equalization cycle.

22. An integrated battery charging and watering system, comprising:

a battery charger;

one or more batteries; and

a connector including a first half and a second half, the first half having an electrical distribution port electrically coupled to the battery charger and a fluid inlet port configured to selectively receive fluid from a fluid supply, and the second half having an electrical receiving port electrically coupled to terminals of the one or more batteries and a fluid outlet port configured to selectively distribute fluid to cells of the one or more batteries.

23. The integrated battery charging and watering system of claim 22, further comprising a fluid supply control valve coupled between the fluid supply and the fluid inlet port of the first half of the connector.

24. The integrated battery charging and watering system of claim 23, further comprising a fluid level detector configured to sense the fluid level in the cells of the one or more batteries.

25. The integrated battery charging and watering system of claim 24, further comprising:

a first sense line coupled between a sense output of the fluid level detector and the second half of the connector; and

a second sense line coupled between the first half of the connector and the charger,

wherein when the first and second sense lines are electrically coupled to one another when the first and second halves of the connector are connected.

26. The integrated battery charging and watering system of claim 25, further comprising a control signal line coupled between the charger and a control input of the fluid supply control valve.

27. The integrated battery charging and watering system of claim 26 wherein a value of the control signal transmitted to the control input determines whether the fluid supply control valve is open or closed.

28. The integrated battery charging and watering system of claim 27 wherein the value of the control signal depends on a sense received from the fluid level detector.

29. The integrated battery charging and watering system of claim 22 wherein said fluid selected from the group consisting of water, tap water, purified water, distilled water, deionized water, acid and electrolyte.