A piezoelectric assembly, comprising: at least two piezoelectric components, each of the at least two piezoelectric components comprising: a main body portion having a set edge, a first surface, and a second surface opposite the first surface, main body portions of the at least two piezoelectric components being stacked, and a connecting portion protruding from the set edge of the main body portion and having a first surface and a second surface opposite the first surface; the first surface of the main body portion and the first surface of the connecting portion being a positive electrode of each of the at least two piezoelectric components, the second surface of the main body portion and the second surface of the connecting portion being a negative electrode of each of the at least two piezoelectric components, first surfaces of connecting portions of the at least two piezoelectric components face a same direction; the connection portions of the at least two piezoelectric components are staggered along the set edge, characterized in that a positive circuit board is coupled to the positive electrode of each of the at least two piezoelectric components, wherein the positive circuit board is coupled to the first surface of the connecting portion; and in that a negative circuit board is coupled to the negative electrode of each of the at least two piezoelectric components, wherein the negative circuit board is coupled to the second surface of the connecting portion. at least two piezoelectric components, each of the at least two piezoelectric components comprising: a main body portion having a set edge, a first surface, and a second surface opposite the first surface, main body portions of the at least two piezoelectric components being stacked, and a connecting portion protruding from the set edge of the main body portion and having a first surface and a second surface opposite the first surface; the first surface of the main body portion and the first surface of the connecting portion being a positive electrode of each of the at least two piezoelectric components, the second surface of the main body portion and the second surface of the connecting portion being a negative electrode of each of the at least two piezoelectric components, first surfaces of connecting portions of the at least two piezoelectric components face a same direction; the connection portions of the at least two piezoelectric components are staggered along the set edge, characterized in that a main body portion having a set edge, a first surface, and a second surface opposite the first surface, main body portions of the at least two piezoelectric components being stacked, and a connecting portion protruding from the set edge of the main body portion and having a first surface and a second surface opposite the first surface; the first surface of the main body portion and the first surface of the connecting portion being a positive electrode of each of the at least two piezoelectric components, the second surface of the main body portion and the second surface of the connecting portion being a negative electrode of each of the at least two piezoelectric components, first surfaces of connecting portions of the at least two piezoelectric components face a same direction; the connection portions of the at least two piezoelectric components are staggered along the set edge, characterized in that a positive circuit board is coupled to the positive electrode of each of the at least two piezoelectric components, wherein the positive circuit board is coupled to the first surface of the connecting portion; and in that a negative circuit board is coupled to the negative electrode of each of the at least two piezoelectric components, wherein the negative circuit board is coupled to the second surface of the connecting portion.