Introduce the differences between batteries and fuel power cells.battery 18650 rechargeable

　　1. Fuel power cells are an energy conversion device that requires energy (fuel) input during operation to produce electrical energy. A regular battery is an energy storage device that must first store electrical energy into the battery. It can only output electrical energy during operation, and does not input energy or generate electrical energy during operation. This is the essential difference between fuel power batteries and regular batteries.

　　Once the technical performance of a fuel power cell is determined, the electrical energy it can generate is only related to the supply of fuel. As long as the fuel is supplied, electrical energy can be generated, and its discharge characteristics are continuous. After determining the technical performance of ordinary batteries, they can only output electrical energy within their rated range, and must be recharged repeatedly before being reused. Their discharge characteristics are intermittent.

　　3. The mass and volume of the fuel power cell body are not large, but a fuel power cell requires a set of fuel storage devices or fuel conversion devices and auxiliary equipment to obtain hydrogen. The mass and volume of these fuel storage devices or fuel conversion devices and auxiliary equipment far exceed that of the fuel power cell itself. During the working process, the fuel will gradually be consumed with the appearance of fuel power cell electricity, The mass gradually decreases (referring to limited fuel in vehicles). Ordinary batteries do not have any other auxiliary equipment. After the technical performance is determined, whether fully charged or discharged, the mass and volume of the battery remain basically unchanged.

　　4. Fuel power cells convert chemical energy into electrical energy, and ordinary batteries also convert chemical energy into electrical energy. This is their common feature. However, when electrical energy is present in fuel power cells, the reactants participating in the reaction are continuously consumed and no longer reused after the reaction. Therefore, it is required to continuously input reactants. The active substance of a regular battery changes with the charging and discharging of the battery, and the active substance undergoes reversible chemical changes repeatedly. The active substance is not consumed, as long as some electrolyte and other substances are added.

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