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:
Sep. 04, 2012
Filed:
Dec. 01, 2009
Mujeeb Ijaz, Leonard, MI (US);
Shazad M. Butt, Troy, MI (US);
Whanjin Roh, Seoul, KR;
Jonathan E. Hostler, Canton, MI (US);
Myoungshin Hong, Seongnam, KR;
Mujeeb Ijaz, Leonard, MI (US);
Shazad M. Butt, Troy, MI (US);
Whanjin Roh, Seoul, KR;
Jonathan E. Hostler, Canton, MI (US);
Myoungshin Hong, Seongnam, KR;
A123 Systems, Inc., Waltham, MA (US);
Abstract
A battery comprises a battery cell having two voltage terminals and a flexible sidewall; a wall structure against which the battery cell is located, the wall structure including a sidewall that is adjacent to the sidewall of the battery cell; and a tooth structure that extends away from the sidewall of the wall structure and towards the sidewall of the battery cell, wherein the tooth structure includes a distal end sufficiently sharp to puncture the flexible sidewall of the battery cell when the flexible sidewall of the battery cell is forced up against the tooth structure due to a build up of excess pressure inside the battery cell.