Energy recovering device with a liquid electrode

An energy recovery device comprising:nat least one capacitor with variable capacitance, the capacitor comprising a single fixed electrode, a dielectric layer, and at least one liquid electrode;a device, which includes an injection electrode that injects an electric charge into the liquid electrode and a removal electrode that removes an electric charge from the liquid electrode; anda mobile element positioned opposite to the fixed electrode relatively to the dielectric layer and capable of moving away from the fixed electrode and moving closer thereto, the liquid electrode being interposed between the dielectric layer and the mobile element, the liquid electrode being deformed by displacement of the mobile element.

An energy recovery device comprising:nat least one capacitor with variable capacitance, the capacitor comprising a single fixed electrode, a dielectric layer, and at least one liquid electrode; anda device, which includes an injection electrode that injects an electric charge into the liquid electrode and a removal electrode that removes an electric charge from the liquid electrode,wherein the liquid electrode is mobile along a direction parallel to the fixed electrode, andwherein the injection electrode is positioned upstream or facing the fixed electrode, and the removal electrode is positioned downstream from the fixed electrode.

An energy recovery device comprising:nat least one capacitor with variable capacitance, the capacitor comprising a single fixed electrode, a dielectric layer, and at least one liquid electrode; anda device, which includes an injection electrode that injects an electric charge into the liquid electrode and a removal electrode that removes an electric charge from the liquid electrode,wherein the liquid electrode is mobile along a direction parallel to the fixed electrode, andwherein the energy recovery device recovers energy of waves of an expanse of water, the waves forming the liquid electrode, including a plurality of fixed electrodes covered with a dielectric layer and positioned side by side defining passages for the waves, and a plurality of injection electrodes each associated with a fixed electrode positioned on the dielectric layer of the fixed electrode so that tops of the waves move away from the injection electrode and move closer thereto while moving along the fixed electrode, the device also including an electric contact point with the expanse of water.

A method for recovering energy applying including at least one capacitor with variable capacitance, the capacitor including a single fixed electrode, a dielectric layer, and at least one liquid electrode, and a device for injecting an electric charge into the liquid electrode and removing and electric charge from the liquid electrode, the method comprising:napplying mechanical action of the liquid electrode so as to vary the capacitance between the liquid electrode and the fixed electrode;measuring the capacitance of the capacitor and detecting instants when the capacitance is maximum and minimum;injecting a charge in the liquid electrode when the value of the capacitance is maximum; andremoving the charge form the liquid electrode when the value of the capacitance is minimum, and recovering the generated electrical energy,wherein the detecting the instant when the capacitance of the capacitor is maximum and the instant when the capacitance is minimum is obtained by injecting a residual charge into the capacitor and by measuring potential difference between the fixed electrode and the liquid electrode.

A method for recovering energy applying including at least one capacitor with variable capacitance, the capacitor including a single fixed electrode, a dielectric layer, and at least one liquid electrode, and a device for injecting an electric charge into the liquid electrode and removing and electric charge from the liquid electrode, the method comprising:napplying mechanical action of the liquid electrode so as to vary the capacitance between the liquid electrode and the fixed electrode;measuring the capacitance of the capacitor and detecting instants when the capacitance is maximum and minimum;injecting a charge in the liquid electrode when the value of the capacitance is maximum;removing the charge form the liquid electrode when the value of the capacitance is minimum, and recovering the generated electrical energy; anda preliminary selecting the bias voltage so that the velocity of the liquid electrode is close to zero at the removal electrode.