| 主权项 |
1. A bistable piezoelectric cantilever vibration energy generating device comprising:
a spherical composite structure comprising one or more partial separations of multiple layers, the spherical composite structure comprising:
a beam bracket,a shell, the shell being spherical, a bottom of the shell having a circular opening, the beam bracket and the shell fixed to a base respectively, the beam bracket comprising:
a support bar,a fixed ball, anda piezoelectric cantilever beam, the fixed ball fixedly connected to the piezoelectric cantilever beam, the support bar supporting the fixed ball, the support bar fixedly connected to the fixed ball, the piezoelectric cantilever beam having twenty-five beams and divided into four layers, the four layers comprising:
a first layer having a beam,a second layer, third layer and the fourth layer that have eight beams respectively, the piezoelectric cantilever beam of different layers being in a circular uniform distribution, the support bar being a support structure of the beam bracket, the support bar provided in fixed ball and in the side far away with the piezoelectric cantilever beam of the first layer, the support bar fixedly connected to the fixed ball through the circular opening at the bottom of the shell, anda bistable piezoelectric cantilever vibrator structure comprising:the piezoelectric cantilever beam, anda permanent magnet, the piezoelectric cantilever beam comprising a first protective layer, a lead, a first piezoelectric layer, a base layer, a second protective layer, a second piezoelectric layer and an electrode, an order of the layers being the first protective layer, the first piezoelectric layer, the base layer, the second piezoelectric layer, and the second protective layer, the layers pasted together, the first protective layer and the first piezoelectric layer completely pasted together, the first piezoelectric layer and the base layer incompletely pasted together and separated at the end of the piezoelectric cantilever beam, the second protective layer and the second piezoelectric layer completely pasted together, the second piezoelectric layer and the base layer incompletely pasted together and separated at the end of the piezoelectric cantilever beam, the length of the separation section being about 20% to about 50% of a total length of the second piezoelectric layer, the first mass pasted on the surface of the first protective layer of the piezoelectric cantilever beam, a second mass pasted on the surface of the second protective layer of the piezoelectric cantilever beam, the lead linked from the electrode, electric charge generated by deformation of the piezoelectric cantilever beam gathering on the electrodes, the lead booting out the electric charge from the electrode and producing the electric current, the permanent magnets comprising: a first permanent magnet, and a second permanent magnet, an aspect of the first mass that keeps away from a fixed side of the cantilever pasted with a first permanent magnet, the second permanent magnet disposed opposite with the first permanent magnet, the first permanent magnet and the second permanent magnet being rectangular magnets and mutually exclusive, the second permanent magnet fixed to an inner wall of the shell, wherein: the piezoelectric cantilever beam is a symmetrical structure capable of facilitating to paste and obtain a piezoelectric area, a length of the first protective layer is equal to a length of the second protective layer, a width of the first protective layer is equal to a width of the second protective layer, a length of the first piezoelectric layer is equal to a length of the second piezoelectric layer, a width of the first piezoelectric layer is equal to a width of the second piezoelectric layer, a length of the first piezoelectric layer is equal to a length of the base layer, a width of the first piezoelectric layer is equal to a width of the base layer, a length and width of the first protective layer are greater than a length and width of the first piezoelectric layer, multiple bistable piezoelectric vibrators of the bistable piezoelectric cantilever vibrator structure that are mutually symmetrical with each other have same parameters, the multiple bistable piezoelectric vibrators of the bistable piezoelectric cantilever vibrator structure that are adjacent to each other have the different parameters, lengths of beams of the piezoelectric cantilever beam on the first layer is equal to lengths of beams of the piezoelectric cantilever beam on the third layer, widths of beams of the piezoelectric cantilever beam on the first layer is equal to widths of beams of the piezoelectric cantilever beam on the third layer, lengths of beams of the piezoelectric cantilever beam on the second layer are equal to lengths of beams of the piezoelectric cantilever beam on the forth layer, widths of beams of the piezoelectric cantilever beam on the second layer are equal to widths of beams of the piezoelectric cantilever beam on the forth layer, length of beam of the piezoelectric cantilever beam on the first layer is different with lengths of beams of the piezoelectric cantilever beam on the third layer, widths of beams of the piezoelectric cantilever beam on the first layer is different with widths of beams of the piezoelectric cantilever beam on the third layer, the multiple piezoelectric cantilever vibrators of the bistable piezoelectric cantilever vibrator structure on the same layer are connected in series, and the multiple piezoelectric cantilever vibrators of the bistable piezoelectric cantilever vibrator structure on the different layer are connected in parallel. |
