Energy harvesting apparatus utilizing electroactive material and electrode unit for deformation

An energy harvesting apparatus using an electroactive material, the energy harvesting apparatus comprising:

• an electricity generator including the electroactive material to generate a voltage due to deformation by an external stimulus;
• and
• an impact generator including a deformable and restorable material capable of repetitive deformation and restoration and configured to generate in the electricity generator a dynamic behavior based on the repetitive deformation and restoration,
• wherein a stimulus by the impact generator to the electricity generator enables energy harvest, wherein the electricity generator comprises:
• a first film layer located to face the impact generator, including the electroactive material, and manufactured in a film form;
• and
• a second film layer located on a side of the impact generator opposite to the first film layer, including the electroactive material, and manufactured in a film form,
• wherein the impact generator comprises unit impact units arranged in a lengthwise direction of the electricity generator so that a multi-point stimulus is enabled in the electricity generator, and
• each of the unit impact units comprises a deformation part capable of repetitive deformation and restoration, and a sliding part that causes friction with the second film layer by sliding according to deformation of the deformation part.

An energy harvesting apparatus using an electroactive material, the energy harvesting apparatus comprising:

• an electricity generator including the electroactive material to generate a voltage due to deformation by an external stimulus;
• an impact generator including a deformable and restorable material capable of repetitive deformation and restoration and configured to generate in the electricity generator a dynamic behavior based on the repetitive deformation and restoration;
• and
• Velcro® parts provided on facing surfaces between the electricity generator and the impact generator,
• wherein a stimulus by the impact generator to the electricity generator enables energy harvest,
• wherein the electricity generator comprises a plurality of uneven parts where spreading in a flat form and bending in a curved form are possible.

An electrode unit for deformation comprising:

• an electricity generator including an electroactive material to generate a voltage due to deformation by an external stimulus;
• and
• an electrode part electrically connected to at least one surface of the electricity generator, and including an elastically deformable material to achieve relative deformation while in contact with the electricity generator,
• wherein the electrode part comprises:
• a base layer formed of an elastically deformable material;
• and
• a stitching electrode layer formed by penetrating through a surface facing the base layer and a surface located on the opposite side at regular intervals.

An electrode unit for deformation comprising:

• an electricity generator including an electroactive material to generate a voltage due to deformation by an external stimulus;
• an electrode part electrically connected to at least one surface of the electricity generator, and including an elastically deformable material to achieve relative deformation while in contact with the electricity generator;
• and
• a stitching member for bonding that passes between the electricity generator and the electrode part to bond the electricity generator to the electrode part so as to be able to allow relative deformation between the electricity generator and the electrode part.