July 19, Japan Brothers (Brother Industries Ltd) recently announced the development of a small vibrating generator Battery, used to replace the daily AA/AAA battery.

The AA model of the vibration power battery is installed in the TV remote control, which the company calls "Vibration-powered Generating Battery". Users only need to shake the remote control to get power. The Japanese brother company official said, "This new type The vibrating power battery will replace the traditional battery and reduce pollution and waste. ”

This type of generator that changes the electromagnetic induction magnetic field by vibration and shaking can only produce a very low power. It is currently suitable for use in devices such as wireless remote controls. The AA/AAA generator can provide about 100mW of power output, usually the wireless remote control requires 40~100mW.

At present, the company has developed engineering samples of two size generators of AA and AAA models. Inside the generator, there is an electromagnetic induction generator, an electric double layer storage capacitor with a capacitance of 500 mF, and an average output power of the AA model is 10 to 180 mW (frequency: 4-8 Hz).

It is reported that Japan Brothers Co., Ltd. will display this "shaking electromagnetic induction generator" at the "Techno-frontier 2010" exhibition held in Tokyo from July 21st to 23rd. Products include TV remote controls, wireless lighting and an LED flash.

AA model sample, two capacitors are packaged in a battery compartment, capacitor output voltage is 1.6V or lower

AA model sample, two capacitors are packaged in two battery compartments, and the capacitor output voltage is 3.2V or lower.

AAA model sample, two capacitors are packaged in two battery compartments, capacitor output voltage is 2.7V or lower

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Knowledge:

Electromagnetic induction (Electromagnetic induction) is a conductor placed in a variable magnetic flux that generates an electromotive force. This electromotive force is called induced electromotive force or induced electromotive force. If this conductor is closed into a loop, the electromotive force will drive electrons to flow and form an induced current (induced current). Michael Faraday is generally recognized as having discovered the sensor in 1831. The phenomenon of people, although Francesco Zantedeschi's work in 1829 may have foreseen this. Faraday finds that the electromotive force (EMF) generated on the closed loop is proportional to the rate of change of the magnetic flux on the curved surface surrounded by any such path, which means that the current will flow when the magnetic flux of the curved surface surrounded by the conductor changes. Flow in any closed conductor. This applies when the field itself changes or when the conductor moves within the field. Electromagnetic induction is the basis for the operation of generators, induction motors, transformers and most other electrical equipment.