The invention relates to a low-frequency
broadband electromagnetic-piezoelectric-friction combined type vibration energy collector. The energy collector comprises a shell, end covers are fixed to theupper end and the lower end of the shell correspondingly. Fixed magnets are fixedly installed on the inner surfaces of the two end covers, a movable
magnet mechanism is installed in the middle in theshell, an
induction coil is installed at the position, where the movable
magnet mechanism is located, of the
peripheral wall of the shell, and an elastic limiting mechanism and a friction power generation mechanism are sequentially arranged between the movable
magnet mechanism and the fixed magnets on the two sides respectively. According to the invention, the multi-stable vibration
system and thetwo-degree-of-freedom vibration
system are utilized to enable the vibration energy collector to respond to low-frequency vibration in a wide range; meanwhile, the piezoelectric effect and the
triboelectric effect are used for collecting collision energy, collision
energy consumption is reduced, and the vibration energy collector further has the advantages of low-frequency
broadband response capacity and efficient energy collection at the same time.