Multi-dimensional broadband vibration energy collection device

The invention discloses a multi-dimensional broadband vibration energy collecting device. The vibration energy collecting device comprises a three-dimensional frame, a piezoelectric energy collecting device, a fixing rod and an external wire. The piezoelectric energy collecting device is composed of a fixed ball and six piezoelectric cantilever beams. The two piezoelectric cantilever beams form a group and are symmetrically and fixedly mounted on the two sides of the fixed ball; the three groups of piezoelectric cantilever beams are respectively distributed along an X axis, a Y axis and a Z axis; one end of the fixing rod is fixedly connected to the fixing ball, and the other end of the fixing rod is fixedly connected to the three-dimensional frame and used for supporting the piezoelectric energy collecting device in the three-dimensional frame; one end of the external wire is connected with the piezoelectric cantilever beam, and the other end extends out of the three-dimensional frame and is used for leading