Linear variable coil density vibration energy harvesting device, rail vehicle and energy harvesting method

Abstract

The invention relates to a linear variable coil density vibration energy harvesting device, a rail vehicle and an energy harvesting method, and the device comprises a housing, and a permanent magnet,a multi-turn induction coil and a coil density adjustment structure which are disposed in the housing, and the permanent magnet and the induction coil are located in a first cavity. The coil density adjusting structure comprises a plurality of movable blocking pieces, a plurality of elastic pieces in a compressed state and an adjusting blocking piece fixed to the permanent magnet, the adjusting blocking piece is matched with the movable blocking pieces to change the coil density, and the permanent magnet does the motion of cutting the plane of the induction coil. Compared with the prior art, kinetic energy generated by a vehicle is converted into electric energy and stored, the electric energy can serve as a distributed power supply of vehicle-mounted monitoring equipment, extra energy does not need to be consumed, and the energy recovery process is not easily affected by the environment; the coil density adjusting structure in the housing can make full use of existing coils, so that the density of the coils around the permanent magnet is always high in the moving process of the permanent magnet, and maximization of output electric energy is achieved.

Description

technical field [0001] The invention relates to the technical field of linear rail vehicle energy harvesting, in particular to a linear variable coil density vibration energy harvesting device, a rail vehicle and an energy harvesting method. Background technique [0002] The existing power supply schemes for linear rail vehicles mainly include hard-wire power supply and shaft-end motor power generation. For heavy-duty freight trains that need to be unmarshalled frequently and have a long marshalling, the power supply cables may be thousands of meters long, with hundreds of connection points, and the resistance of the wires and the contact resistance at the terminals Great impact on power supply. In addition, based on the maintenance system of freight trains, the hard-wired car-end connection cannot guarantee high reliability, and the reliability of the vehicle's power supply will be greatly reduced due to this. The power generation of the shaft end motor essentially increa...

AI Technical Summary

Problems solved by technology

In addition, based on the maintenance system of freight trains, the hard-wired car-end connection cannot guarantee high reliability, and the reliability of the vehicle's power supply will be greatly reduced due to this

Shaft-end motor power generation essentially increases the resistance of the train running, so that the train needs to consume more electric energy during operation, resulting in additional consumption of traction power

[0003] For energy harvesting of linear rail vehicles, additional energy consumption is required at present, and it is not possible to achieve continuous energy supply only by using its own characteristics

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