BATTERY RECHARGEABLE PIEZOELECTRIC SYSTEM AND VEHICLE HAVING THE SAME

摘要

A battery rechargeable piezoelectric system according to an embodiment of the present invention is a piezoelectric system for charging a battery of a vehicle, which includes a piezoelectric unit provided in at least one region of the vehicle and having a polycrystalline structure including a plurality of single crystalline piezoelectric devices. The single crystalline piezoelectric devices are laminated in a height direction to form the piezoelectric unit, and compressed or extended according to an external force applied to the piezoelectric unit to generate electrical energy and to charge the battery with electrical energy. According to an embodiment of the present invention, when the piezoelectric unit including the single crystalline piezoelectric devices is mounted on the vehicle and the external force is applied to the vehicle, a greater amount of electrical energy is generated as compared with a conventional piezoelectric unit so that the charging efficiency of the battery provided in the vehicle can be improved. Accordingly, cost can be reduced and the required time can be shortened.