HIGH OUTPUT ELECTRICAL ENERGY STORAGE DEVICE

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 voltage terminals. The electric energy storage device according to the present invention comprises a positive electrode and a negative electrode for storing electrical energy, a positive electrode current terminal and a negative electrode current terminal connected to the respective positive electrode and the negative electrode to provide current thereto; and a positive electrode voltage terminal and a negative electrode voltage terminal connected to the positive electrode and the negative electrode to detect voltage between the positive electrode and the negative electrode. The device of the present invention controls charging or discharging operation by using the detected voltage as control voltage.