A generator moving through a medium has a contacting surface structure relative to a frame with a spring coupled between the two. The contacting surface structure also has an electrogenerative portion coupled to the contacting surface structure and the frame, such as a piezoelectric or electromagnetic structure, although other types of structures are known within the art. The movement of the frame through the medium exerts forces upon the contacting surface structure which causes contacting surface structure movement relative to the base structure through the electrogenerative portion. The spring provides a force upon the contacting surface structure in response to the force from the fluid flow.

A piezoelectric power generator assembly includes a housing, a piezoelectric transducer located in the housing, and a piston located in the housing. The piston is movable with respect to the housing and is configured to be moved into contact with the piezoelectric transducer, and the piezoelectric transducer is configured to generate an electrical charge when contacted by the piston.

The described technology relates to an energy conversion device using a liquid, and an electrode laminate structure energy conversion apparatus using a liquid. The device includes a substrate, a first electrode formed on the substrate, and an energy conversion layer formed on the first electrode so as to cover the first electrode. The device also includes a second electrode formed on the first energy conversion layer and of which a contact state with the liquid is changed according to a movement or a state change of the liquid. An electric energy generation device having an excellent integration characteristic can be implemented by a form of the electrode structure, a device can be miniaturized by a vertical electrode structure, and a high-efficiency energy conversion device can be implemented by generating various voltages according to the number of upper electrodes and the number of lower electrodes.

The present disclosure generally relates to electrical power generation from a piezoelectric material. A piezoelectric power generator assembly is disclosed including a housing, a piezoelectric transducer located in the housing, and a piston located in the housing, wherein the piezoelectric transducer is configured to generate an electrical charge when contacted by the piston. A piezoelectric power generator assembly is also disclosed including a housing comprising a flowline located within the housing and a piezoelectric transducer located in the housing and disposed about a perimeter of the flowline, wherein the piezoelectric transducer is configured to generate an electrical charge when contacted by a fluid contained in the flowline. A subsea drilling system is disclosed including a subsea blowout preventer stack and a piezoelectric power generator assembly for powering sensors on the blowout preventer stack configured to monitor characteristics of the stack.

Disclosed are various embodiments of systems, devices and methods for generating electricity, transforming voltages and generating motion using one or more piezoelectric elements operably coupled to one or more non-piezoelectric resonating elements. In one embodiment, a non-piezoelectric resonating element is configured to oscillate and dissipate mechanical energy into a piezoelectric element, which converts a portion of such mechanical energy into electricity and therefore acts as a generator. In another embodiment, a piezoelectric element is configured to drive one or more mechanical elements operably coupled to the one or more non-piezoelectric resonating elements, and therefore acts as a motor. In still another embodiment, a piezoelectric element is operably coupled to a non-piezoelectric resonating element to form an electrical transformer. The mechanical properties of the non-piezoelectric resonating elements are typically selected to permit relatively high permissible stress and strain in comparison to the corresponding piezoelectric elements to which coupled or attached.

An energy generation device Including: a surface for supporting movement of a work material, and an energy converter. The surface is operable to induce movement of the work material relative to the surface. The energy converter is arranged to generate electrical energy based on the induced movement of the work material relative to the surface.

An energy harvester, including a cyclical impulse device, and a piezoelectric generator deformably connected to the device. A method for harvesting energy from a flowing fluid including inducing a selected flow regime, causing a cyclical impulse device to cycle based upon the flow regime, and physically deforming a piezoelectric generator with the device. A wellbore system, including a borehole in a subsurface formation, a string in the borehole, and an energy harvester disposed within or as a part of the string.

A valve including a pressurised fluid inlet and a fluid outlet, and including a fixed plate with first channels, a flap with second channels, the flap movable between: an opening position where the flap is spaced apart from the plate, the first channels and the second channels being in fluidic communication and allowing the flow of the fluid, a closing position where the flap is in contact with the plate, the first channels and the second channels not being in fluidic communication and blocking the flow of the fluid, a piezoelectric actuator acting upon the flap to move it between the closing position and opening position, the inlet is arranged in such a way that the pressurised fluid exerts a force on an active face of the flap stressing said flap to the closing position. The embodiments also relate to a system for generating electricity.

The present disclosure discloses a bionic cuttlefish-typed underwater detection robot, including a bionic cuttlefish-typed body structure, a piezoelectric energy capture device, a circuit rectification and storage assembly and a power control assembly. The bionic cuttlefish-typed body structure includes a head and a main body; the piezoelectric energy capture device includes piezoelectric ceramic elements arranged around the main body and PVDF floating belts, and an end of each piezoelectric ceramic element is connected to a spherical spoiler component, the PVDF floating belts are evenly distributed at a tail end of the main body. The present disclosure adopts piezoelectric ceramic elements with spoiler components and PVDF floating belts to generate electricity, converts wave energy and ocean current energy into electric energy, powers the power control assembly of the detection robot. It has high power generation efficiency and stable current, and realizes the autonomous operation of the underwater detection robot.

Creating and utilizing electricity and radiation via actions of hoses is detailed. Likewise described is using electricity to heat the hoses and radiation to sanitize fluid such as water of a pool or spa. Electricity may be generated by pulsation of the hoses when employed together with a water-interruption type of automatic pool cleaner, for example. Hoses alternatively or additionally may include chemicals or materials reactive to light or other radiation.