An intelligent speaker adapted to recover vibration energy to generate electrical power is provided, including a housing, a speaker module, a main board, a power generation module, and a battery module. The speaker module is disposed in the first chamber formed by the housing. The main board disposed in the first chamber transmits an audio signal to the speaker module, wherein the speaker module transmits a main sound wave based on the audio signal. The power generation module is disposed in the first chamber and is vibrated in response to the main sound wave to generate an induction current. The battery module is disposed in the first chamber. The battery module is coupled to the main board to supply the electrical power to the main board, wherein the power generation module is coupled to the battery module and changes the battery module by the induction current.

A vibration energy harvester includes a proof mass that is a magnetic array or a coil array. The magnetic array has multiple magnets. The coil array has one or more coils. The vibration energy harvester includes an enclosed chamber. The enclosed chamber has the other of the coil array or the magnetic array that is not the proof mass. The one or more copper coils and the multiple magnets are configured to generate the electrical energy from a relative movement between the one or more copper coils and the multiple magnets. The vibration energy harvester includes a liquid suspension that suspends the proof mass within the enclosed chamber.

Magnets are configured to generate absorption force for holding a movable member at each of first and second positions. A power generator includes a mover configured to move in conjunction with the movable member. The power generator is configured to convert kinetic energy of the mover into electrical energy. When an operator moves in a direction in which a first pressing part approaches a second holding part while the movable member is at the first position, a spring member is compressed by the first pressing part and the second holding part. The spring member then generates restoring force for moving the movable member to the second position. When the operator moves in a direction in which a second pressing part approaches a first holding part while the movable member is at the second position, the spring member is compressed by the second pressing part and the first holding part. The spring member then generates restoring force for moving the movable member to the first position.

Magnets are configured to generate absorption force for holding a movable member at each of first and second positions. A power generator includes a mover configured to move in conjunction with the movable member. The power generator is configured to convert kinetic energy of the mover into electrical energy. When an operator moves in a direction in which a first pressing part approaches a second holding part while the movable member is at the first position, a spring member is compressed by the first pressing part and the second holding part. The spring member then generates restoring force for moving the movable member to the second position. When the operator moves in a direction in which a second pressing part approaches a first holding part while the movable member is at the second position, the spring member is compressed by the second pressing part and the first holding part. The spring member then generates restoring force for moving the movable member to the first position.

The disclosure relates to the field of vehicle energy recovery devices, and particularly discloses a vehicle shock absorber capable of generating electricity which includes a shock absorber body, a piston rod and a bearing spring. The shock absorber body includes an inner cylinder and an outer cylinder, and an oil storage chamber communicated with an inner cavity of the inner cylinder is formed between the inner cylinder and the outer cylinder. Both ends of the bearing spring are respectively connected to an upper end of the piston rod and the outer cylinder. A bottom end of the piston rod is connected to a piston in sliding fit with the inner cylinder, and a coil is sealedly disposed in the piston. Opposite sides inside the oil storage chamber are each provided with a permanent magnet with an opposite magnetic pole, and the coil is connected to an electrode lead.

The disclosure relates to the field of vehicle energy recovery devices, and particularly discloses a vehicle shock absorber capable of generating electricity which includes a shock absorber body, a piston rod and a bearing spring. The shock absorber body includes an inner cylinder and an outer cylinder, and an oil storage chamber communicated with an inner cavity of the inner cylinder is formed between the inner cylinder and the outer cylinder. Both ends of the bearing spring are respectively connected to an upper end of the piston rod and the outer cylinder. A bottom end of the piston rod is connected to a piston in sliding fit with the inner cylinder, and a coil is sealedly disposed in the piston. Opposite sides inside the oil storage chamber are each provided with a permanent magnet with an opposite magnetic pole, and the coil is connected to an electrode lead.

A method of mechanical-to-electrical energy conversion utilizes a mechanical spring in combination with a rapid-action variable inductance magnetic flux switch to convert a spring-loaded mechanical energy into a change in magnetic flux captured by an electrical coil element within the magnetic flux switch. The change in coil inductance and magnetic flux induces a current to flow through the electrical coil in the form of a a pulse of electrical energy that may be stored. The electrical coil is coupled to the mechanical spring so that each time the spring is released, the coil moves with respect to a magnetic core and a change in flux is created. The application of an external mechanical force (such as human locomotion) functions to compress and subsequently unlock the mechanical switch, allowing for the electrical energy associated with the application of aperiodic forces to be harvested.

A power generation device includes a first magnetic body including a side surface that makes contact with or separates from the first side surface of the yoke, a second magnetic body including a side surface that makes contact with or separates from the second side surface of the yoke, and a magnet including a first magnetic pole face and a second magnetic pole face that has a magnetic pole different from a magnetic pole of the first magnetic pole face. The first magnetic pole face is attracted to the attraction surface of the first magnetic body, the second magnetic pole face is attracted to the attraction surface of the second magnetic body, and at least one of the first magnetic body and the second magnetic body rotates in a state of being attracted to the magnet.

A power generation device includes a first magnetic body including a side surface that makes contact with or separates from the first side surface of the yoke, a second magnetic body including a side surface that makes contact with or separates from the second side surface of the yoke, and a magnet including a first magnetic pole face and a second magnetic pole face that has a magnetic pole different from a magnetic pole of the first magnetic pole face. The first magnetic pole face is attracted to the attraction surface of the first magnetic body, the second magnetic pole face is attracted to the attraction surface of the second magnetic body, and at least one of the first magnetic body and the second magnetic body rotates in a state of being attracted to the magnet.

A device transducing fluid dynamic energy into electrical energy, usable as a flow meter or energy harvester, includes a mechanical interaction element with a fluid flow, which is brought into oscillation or vibration by the fluid flow, by way of one or more elastic suspension elements; a magnetic induction electromotive force generator, dynamically connected to the mechanical interaction element by the fluid flow, which crosses an electric conductor, moved in the magnetic field by the oscillating or vibrating motion of the mechanical interaction element, thus generating an induced current in the conductor; and a collection unit for the electrical signal generated by induction. The mechanical interaction element is suspended to oscillate around an axis transversal to the flow direction and corresponding to a transversal axis half way along the mechanical interaction element.