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Method for using EAPs to collect input energy

IP.com Disclosure Number: IPCOM000130480D
Publication Date: 2005-Oct-25
Document File: 2 page(s) / 95K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for using polymers (EAPs) to collect input energy. Benefits include improved functionality and improved power performance.

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Method for using EAPs to collect input energy

Disclosed is a method for using polymers (EAPs) to collect input energy. Benefits include improved functionality and improved power performance.

Background

      Conventional battery life for wireless mobile products is a maximum of 8 hours with low energy-use programs. Improved mobile battery life is an industry requirement.

      Electroactive polymers (EAPs) have the following characteristics:

•             When the external shape changes, EAPs produce electricity.

•             Motion producing devices change shape when stimulated by electricity.

      Some EAPs use compression to generate energy. Other EAPs convert input changes in the energy to motion, such as with servo motors, actuators, and artificial muscles.

Description

      The disclosed method includes a thin layer of EAP material under the keyboard of a laptop that collects energy that is subsequently stored in a battery inside the carrying case. The battery is charged when the user types or moves the mouse, which displaces the EAP. The case continues to charge the integrated battery with or without the mobile device being docked (see Figure 1).

      When a key is depressed during typing, the EAP is compressed, changing the shape of the material and producing electricity. The same concept applies to mouses, including sticks, pads, and conventional roller mouses (see Figure 2).

      The energy generated by the EAP keyboard is not suffic...