The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2006
Filed:
Oct. 05, 2001
Tsuyoshi Okawa, Fukushima, JP;
Mamoru Hosoya, Kanagawa, JP;
Junji Kuyama, Kanagawa, JP;
Yuzuru Fukushima, Miyagi, JP;
Tsuyoshi Okawa, Fukushima, JP;
Mamoru Hosoya, Kanagawa, JP;
Junji Kuyama, Kanagawa, JP;
Yuzuru Fukushima, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A cell in which liquid leakage or destruction may be prevented as the apparent energy density per unit volume of the cell is maintained. The cell uses, as a cathode active material, a compound of an olivinic crystal structure having the formula LiFeMPO, where M is at least one selected from the group of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05≦x≦1.2 and 0≦y≦0.8. By adjusting the amount of the electrolyte solution, the amount of the void in the container is set so as to be not less than 0.14 cc and not more than 0.3 cc per 1 Ah of the cell capacity.