POWER STORAGE DEVICE,申请号US201314438047-传众专利搜索

发明名称	POWER STORAGE DEVICE
摘要	A power storage device includes a case and a pressure release valve. The pressure release valve includes arcuate portions, intersecting grooves, and arcuate grooves that are connected to the ends of the intersecting grooves and extend along the arcuate portions. When imaginary straight lines extend along the intersecting grooves and intersect the circumferential edge of the pressure release valve, a first region, which is surrounded by the imaginary straight lines and the circumferential edge of the pressure release valve, and a second region, which is surrounded by the imaginary straight lines and the circumferential edge of the pressure release valve, are defined. The part of the first region that is in contact with the arcuate portions is larger than the part of the second region that is in contact with the arcuate portions. The area of the first region is greater than the area of the second region.
申请公布号	US2015280191(A1)	申请公布日期	2015.10.01
申请号	US201314438047	申请日期	2013.11.05
申请人	KABUSHIKI KAISHA TOYOTA JIDOSHOKKI	发明人	Matsudo Akihisa;Okuda Motoaki;Tomioka Masami;Nishihara Hiroyasu;Kurita Mikiya
分类号	H01M2/12;H01M2/02	主分类号	H01M2/12
代理机构		代理人
主权项	1. A power storage device comprising: a case, which accommodates an electrode assembly; and a pressure release valve provided in the case, wherein the pressure release valve releases pressure in the case to an outside of the case, wherein the pressure release valve includes arcuate portions, which configure portions of a circumferential edge of the pressure release valve, intersecting grooves, and a plurality of arcuate grooves connected to ends of the intersecting grooves, wherein the arcuate grooves extend along the arcuate portions, when imaginary straight lines extend along the intersecting grooves, respectively, and intersect the circumferential edge of the pressure release valve, a first region, which is surrounded by the imaginary straight lines and a part of the circumferential edge of the pressure release valve, and a second region, which is surrounded by the imaginary straight lines and another part of the circumferential edge of the pressure release valve, are defined, the first and second regions are configured such that a part of the first region that is in contact with the arcuate portions is larger than a part of the second region that is in contact with the arcuate portions, and the area of the first region is greater than the area of the second region.
地址	Kariya-shi, Aichi JP