Abstract: A hydrogen power supply module includes a hydrogen production unit, a fuel cell unit, and a hydrogen flow channel. The hydrogen flow channel is in communication with the hydrogen production unit and the fuel cell unit, and a solid-state reactant is stored in the hydrogen production unit. A liquid-state reactant reacts with the solid-state reactant to produce hydrogen when the liquid-state reactant comes into contact with the solid-state reactant, and the hydrogen flows into the fuel cell unit via the hydrogen flow channel. A life preserver having the hydrogen power supply module is also provided.

Abstract: A hydrogen production device includes a reaction unit and a hydrogen collection unit. The reaction unit includes a first region, a second region and a barrier layer. The first region stores a solid-state reactant, the second region stores a liquid-state reactant, and the barrier layer separates the first region from the second region. When the barrier layer forms an opening, the solid-state reactant comes into contact and reacts with the liquid-state reactant to produce hydrogen gas. The hydrogen collection unit has at least one gas vent to lead the hydrogen gas to flow into a hydrogen acceptor via the gas vent. The hydrogen gas is allowed to flow through the hydrogen collection unit, and the liquid-state reactant is prevented from entering the hydrogen collection unit.

Abstract: A battery device for a notebook computer includes a control circuit, a rechargeable battery unit, and a fuel cell unit. The control circuit includes a transmission interface adapted to be electrically connected to the notebook computer. The rechargeable battery unit is electrically connected to the control circuit and includes a plurality of battery cells. The fuel cell unit is electrically connected to the control circuit. A volume of the fuel cell unit is substantially integral multiple of a volume of the battery cell.

Abstract: A precaution hose is a hollow cylindrical body made of waterproof material with a length thereof being cut as the actual need. Two seal plates are attached to the two ends of the cylindrical body respectively. A valve is mounted to the cylindrical body. The seal plates are touched to the edges of a gap thereof tightly and the cylindrical body is filled with the liquid till being full completely so that a lower part of the cylindrical body can press against the floor due to an inner liquid pressure to keep the floodwater out.