Methods and systems for delivering electric energy

1. A dispenser for dispensing charged battery units into a tank of an electrically powered apparatus and comprising:

a dispensing container for accommodating a plurality of charged battery units;

a conduit having a first end coupled to the dispensing container and a second end adapted to be coupled to a tank to be filled; and

a dispensing mechanism for selectively dispensing battery units to the tank through said conduit in essentially random order and orientation, the dispensing mechanism comprising means for communicating individually with each battery unit dispensed to retrieve an identification code of the battery unit, and a metering unit for monitoring and controlling the number and or state of battery units dispensed in order to transfer a user defined amount of energy to said electrically powered apparatus, said metering unit being configured to store the identification codes of the battery units dispensed; and

an output unit between the dispensing container and the conduit, capable of allowing battery units to enter the conduit from the dispensing containing, and comprising a diverter for removing faulty battery units, wherein the metering unit is functionally connected to the output unit for operating the output unit and controlling the dispensing process.

2. The dispenser according to claim 1 , wherein said dispensing container comprises a silo and said conduit is coupled to the bottom of the silo, wherein the conduit is configured such that battery units are conveyed through the conduit at least partly by gravity.

3. The dispenser according to claim 1 , wherein said conduit comprises a flexible hose.

4. The dispenser according to claim 1 , wherein said dispensing mechanism is arranged to transfer battery units through said conduit by means of pneumatic conveying.

5. The dispenser according to claim 1 , wherein said metering unit is configured to dispense a known number of battery units into the tank and or a known amount of stored electric energy.

6. The dispenser according to claim 1 , wherein said means for communicating is additionally configured to retrieve information on the state of the battery unit or information stored in the battery units, said information comprising one or more of the following: charge level, charge cycle, voltage level of the battery unit, unique identity of the battery unit.

7. The dispenser according to claim 1 , and comprising a battery unit recharging system.

8. The dispenser according to claim 7 , wherein said recharging system is integrated into said dispensing container and comprises a plurality of electric contact pads for making electrical contact with said battery units.

9. The dispenser according to claim 8 , wherein said recharging system is configured to send programming signals and deliver charging power to battery units via said electric contact pads.

10. The dispenser according to claim 7 and comprising a recharging container separate from said dispensing container, wherein said charging system is integrated into said charging container and comprises a plurality of electric contact pads for making electrical contact with said battery units, the dispenser further comprising a transfer mechanism for transferring charged batteries from the charging container to the dispensing container.

11. The dispenser according to claim 1 and comprising an extraction mechanism for extracting battery units from a tank.

12. The dispenser according to claim 11 , wherein said extraction mechanism utilizes at least part of said conduit.

13. The dispenser of claim 11 , wherein said metering unit is configured to detect and record unique identities of extracted battery units.

14. The dispenser according to claim 1 , said dispensing container being configured to contain at least 1000 battery units.

15. The dispenser according to claim 1 , and comprising a point-of-sale system coupled to said metering system to control the metering system and or reconcile financial charging information in accordance with dispensed battery units.

16. A method of providing electric energy to an electric vehicle, the vehicle comprising a tank for storing a plurality of battery units, the method comprising:

locating the vehicle in close proximity to a battery unit dispenser;

coupling the tank to the dispenser via one or more battery unit transfer conduits;

extracting depleted battery units from the tank via the or at least one conduit;

dispensing charged battery units into the tank via the or at least one conduit in essentially random order and orientation;

communicating individually with each battery unit dispensed to retrieve an identification code of the battery unit; and

performing metering of the extracted and dispensed battery units for the purpose of financial charging, said metering comprising storing the identification codes of the battery units dispensed, wherein the extraction and dispensing of battery units is controlled by a vehicle user so that, in conjunction with said step of metering, a user defined amount of available electric energy is added to the tank, and wherein said step of dispensing comprises removing faulty battery units.

17. The method of claim 16 , wherein the method is carried out at a roadside service station.

18. The method of claim 16 and comprising delivering the extracted battery units to a charging system, and subsequently recharging the depleted battery units.

19. The method of claim 16 , wherein said step of dispensing comprises selecting a battery unit type from a plurality of available battery unit types, and dispensing the selected battery unit type.