Fuel power battery is an energy conversion device that must have energy (fuel) input during operation to produce electrical energy. An ordinary battery is an energy storage device. Electric energy must be stored in the battery first. It can only output electric energy during operation. Do not input energy during operation, and there will be no electrical energy. This is the essential difference between fuel power batteries and ordinary batteries.

       Once the technical performance of the fuel power cell is determined, the electrical energy it can only be related to the supply of fuel. As long as fuel is supplied, electrical energy can appear, and its discharge characteristics are continuous. After the technical performance of an ordinary battery is determined, it can only output electrical energy within its rated range, and it must be reused after repeated charging, and its discharge characteristics are intermittent.

       The mass and volume of the fuel power battery body are not large, but the fuel power battery 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 are It is far beyond the fuel power battery itself. During the operation, the fuel will gradually be consumed with the emergence of the fuel power battery's electrical energy and gradually reduce its mass (referring to the limited fuel on board the vehicle). Ordinary batteries do not have other auxiliary equipment. After the technical performance is determined, the mass and volume of the battery will remain basically unchanged whether it is fully charged or discharged.

       Fuel power batteries convert chemical energy into electrical energy, and ordinary batteries also convert chemical energy into electrical energy. This is their common feature. However, when fuel power batteries appear, the reaction substances participating in the reaction are constantly consumed after the reaction. No reuse is required, therefore, continuous input of reaction substances is required. The active substances of ordinary batteries change with the charging and discharging of the battery. The active substances undergo reversible chemical changes. The active substances are not consumed, as long as some electrolytes and other substances are added.

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