Method and system for dispensing pelletized fuel for use with a fuel cell
View Patent ↗Representative embodiments provide for a fuel activation device including a fuel storage chamber configured to store a plurality of fuel pellets arranged as a stack. A fuel dispensing device is configured to transport a fuel pellet to a fuel activation chamber. A spring is configured to advance the fuel pellets toward the fuel dispensing device as one or more fuel pellets are removed from the stack. A fuel initiator is configured to activate a release of hydrogen gas from the transported fuel pellet. The fuel activation device is configured to provide the hydrogen gas to a fuel cell through a gas vent. A method is provided including providing a plurality of fuel pellets arranged as a spring-loaded stack, transporting a fuel pellet from the stack, activating a release of hydrogen gas from the transported fuel pellet, and providing the hydrogen gas to a fuel cell.
1. A fuel pellet package for use with a fuel activation device for a fuel cell, the fuel pellet package comprising:
a packaging;
a hermetically sealed envelope supported within the packaging;
a plurality of fuel pellets, each including hydrogen releasable by the fuel activation device, wherein the fuel pellets are arranged as a stack within the hermetically sealed envelope; and
a first spring configured to exert a first force coupled to the fuel pellets.
2. The fuel pellet package of claim 1 , and wherein the packaging and the hermetically sealed envelope are each configured to be selectively openable in response to a predefined action.
3. The fuel pellet package of claim 2 , and wherein the predefined action includes usably coupling the fuel pellet package with the fuel activation device.
4. The fuel pellet package of claim 2 , and wherein the predefined action includes usably coupling the fuel pellet package with a pellet dispensing device of the fuel activation device.
5. The fuel pellet package of claim 1 , and further comprising a desiccant configured to absorb moisture away from the plurality of fuel pellets.
6. The fuel pellet package of claim 1 , and further comprising a layer of passivating material disposed between each of adjacent ones of the plurality of fuel pellets, the passivating material configured to prevent moisture from releasing the hydrogen from the fuel pellets.
7. The fuel pellet package of claim 1 , and wherein the first spring is further configured to advance the fuel pellets in a predefined direction in response to a removal of a fuel pellet from the stack.
8. The fuel pellet package of claim 1 , and further comprising a second spring configured to exert a second force coupled to the fuel pellets in a direction substantially opposite to that of the first force, and wherein the first spring and the second spring are each further configured to advance the fuel pellets in respective predefined directions in response to a removal of a fuel pellet from the stack.
9. The fuel pellet package of claim 1 , and wherein each of the fuel pellets is configured to release the hydrogen as a gas in response to contact with an activation liquid.
10. The fuel pellet package of claim 9 , and wherein each of the fuel pellets is further configured such that the activation liquid is acidic water.
11. The fuel pellet package of claim 1 , and wherein each of the fuel pellets is configured to release the hydrogen as a gas in response to providing electrical energy to an electrically conductive outer coating of the fuel pellet.
12. The fuel pellet package of claim 1 , and wherein each of the fuel pellets is configured to release the hydrogen as a gas in response to heating the fuel pellet.
13. The fuel pellet package of claim 1 , and wherein each of the fuel pellets includes at least one of NaBH4, CaH4, or a zeolite.