公开(公告)号：US20220013852A1

公开(公告)日：2022-01-13

申请号：US17295192

申请日：2019-03-20

申请人： Envision AESC Japan Ltd.

发明人： Masanori Suenaga ,  Yasukazu Iwasaki ,  Shuuto Kikuchi

IPC分类号： H01M50/325

摘要： When the pressure in the battery case is increased, the gas discharge flow rate is secured sufficiently. This battery case (30) is a battery case in which a battery (2) is housed in a housing (10). The battery case (30) includes a gas discharge mechanism (G). The gas discharge mechanism (G) includes a gas discharge port (51) that opens in a wall plate (43) that covers a periphery of the housing (10), and a lid part (35m). The lid part (35m) is disposed to cover the gas discharge port (51) from inside the wall plate (43), and is fixed on the housing (10) side.

公开(公告)号：US10770716B2

公开(公告)日：2020-09-08

申请号：US16308136

申请日：2016-06-08

申请人： Envision AESC Japan Ltd.

发明人： Manabu Nishijima ,  Fumihiro Kawamura ,  Masanori Suenaga ,  Yuji Muroya

IPC分类号： H01M4/131 ,  H01M4/13 ,  H01M4/133 ,  H01M4/134 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/056 ,  H01M10/0566 ,  H01M10/0567 ,  H01M10/0569 ,  H01M10/052 ,  H01M4/02 ,  H01M10/42

摘要： A flat stacked type non-aqueous electrolyte secondary battery includes: a positive electrode comprising a a positive electrode active material formed on a surface of a positive electrode current collector, a negative electrode comprising a negative electrode active material formed on a surface of a negative electrode current collector, and an electrolyte layer, wherein a ratio of a rated capacity to a pore volume of the negative electrode active material layer is 1.12 Ah/cc or more, a ratio of a battery area to a rated capacity is 4.0 cm2/Ah or more, and a rated capacity is 30 Ah or more, and the electrolyte layer contains an electrolyte solution containing an electrolyte salt dissolved and a value obtained by dividing a weight of an electrolyte salt in pores in the negative electrode active material layer by a weight of the negative electrode active material is 0.031 or more.