The present invention provides a means for minimizing and improving the reliability and safety of the electrochemical cells such as batteries, capacitors, or the like. The present invention involves forming one or more holes in an electrochemical cell such...

The present invention relates to an electric energy storage device such as capacitors, secondary batteries, and the like, and more particularly, to an electric energy storage device in which high output characteristics are improved through the use of volta...

The present invention is to provide a simple and inexpensive unit for voltage equalization between electric energy storage cells in electric energy storage devices in which electric energy storage cell such as a battery or a capacitor are connected in seri...