Power generation element and power generation apparatus

A power generation element comprising:

• a first magnetostrictive plate and a second magnetostrictive plate each including a magnetostrictive material;
• a magnet unit including a magnet fixed to at least one of the first magnetostrictive plate or the second magnetostrictive plate;
• a coil containing at least part of the first magnetostrictive plate and the second magnetostrictive plate therein, and
• a coupling plate configured to vibrate by receiving an external force, the coupling plate being disposed between the first magnetostrictive plate and the second magnetostrictive plate,
• wherein the first magnetostrictive plate and the second magnetostrictive plate are laid out in such a manner that stresses applied to the first magnetostrictive plate and the second magnetostrictive plate are in opposite directions to each other, and the magnet unit is disposed in such a manner that magnetic fields applied to the first magnetostrictive plate and the second magnetostrictive plate are in opposite directions to each other,
• wherein the stresses are applied from the coupling plate to the first magnetostrictive plate and the second magnetostrictive plate,
• wherein the coupling plate extends from an end of either one of the first magnetostrictive plate and the second magnetostrictive plate to an end of the other one of the first magnetostrictive plate and the second magnetostrictive plate and has a hole in which a portion of the magnet unit is inserted.