Asahi Glass Company, Limited

Tomonori Aoki

Katsuji Ikeda

Yoshihiro Hozumi

Manabu Suhara

Takeshi Kawasato

Kazuya Hiratsuka

Makoto Inoue

Masami Kashihara

Makato Inoue

An electrochemical device comprises a pair of electrodes having electrode layers formed on strip-like collectors except on their strip-like portions along a longitudinal side of the strip-like collectors; strip-like separators insulating these; two collector plates connected to the strip-like portions; a case accommodating these; a lid for sealing the case; a pair of terminals connected to the collector plates and being connectable to an outside of the case. The pair of terminals is respectively connected to the lid and the case, and the pair of electrodes are wound interposing the separators therebetween, and the strip-like portions are located on both end surfaces. The electrochemical device has high volume density and low internal resistance and it can be manufactured in short time.

Electrochemical device comprising a pair of electrodes and an electrolyte

An electric double layer capacitor comprises a first electrode,comprising a belt-like electricity collecting material,having both surfaces on which electrode layers,are formed leaving belt-like portions in a side of the belt-like electricity collecting material,along its longitudinal direction, a second electrode,having the same structure as the first electrode,belt-like separators,to electrically insulate the first and second electrodes,a post-like winding core,on which the first and second electrodes,and the separators,are wound to thereby form a cylindrically wound element,a first electricity collecting plate,in contact with the belt-like portion,a second electricity collecting plate,in contact with the belt-like portion,wherein the belt-like portions,are located at opposing positions in the wound element,both ends of the winding core,are respectively in contact with the first and second electricity collecting plates,to determine the relative positions in axial directions of the first and second electricity collecting plates,and the electricity collecting plates,are electrically insulated. In the capacitor, tab-like electricity collecting leads are not required, manufacture is easy to shorten a time for manufacturing, and the capacity density per volume is high.

Electric double layer capacitor

Growing community of inventors

Yokohama, Japan

Tomonori Aoki