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.

公开(公告)号：US11043717B2

公开(公告)日：2021-06-22

申请号：US16308073

申请日：2016-06-08

申请人： Envision AESC Japan Ltd.

发明人： Manabu Nishijima ,  Fumihiro Kawamura ,  Yuji Muroya ,  Yoshiaki Nitta

IPC分类号： H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/133 ,  B32B27/32 ,  H01M50/116 ,  H01M50/411 ,  H01M50/449 ,  H01M10/052 ,  H01M50/40 ,  H01M10/058 ,  H01M50/403 ,  H01M50/463 ,  H01M4/02 ,  H01M10/42

摘要： A non-aqueous electrolyte secondary battery with improved cycle durability includes a power generating element including a positive electrode obtained by forming a positive electrode active material layer containing a positive electrode active material on a surface of a positive electrode current collector, a negative electrode obtained by forming a negative electrode active material layer containing a negative electrode active material on a surface of a negative electrode current collector, and a separator, a ratio of a rated capacity to a pore volume of the separator being 1.55 Ah/cc or more, a ratio of a battery area to a rated capacity being 4.0 cm2/Ah or more, and a rated capacity being 30 Ah or more, wherein a variation in porosity in the separator is 4.0% or less.

公开(公告)号：US10476110B2

公开(公告)日：2019-11-12

申请号：US16308005

申请日：2016-06-08

申请人： Envision AESC Japan Ltd.

发明人： Fumihiro Kawamura ,  Manabu Nishijima ,  Yuji Muroya ,  Yoshiaki Nitta

IPC分类号： H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0585 ,  H01M10/42 ,  H01M10/0525 ,  H01M4/02

摘要： A non-aqueous electrolyte secondary battery has improved battery durability, a high capacity, a high density, and a large area and includes a power generating element including a positive electrode in which a positive electrode active material layer containing a positive electrode active material is formed on a surface of a positive electrode current collector, a negative electrode in which a negative electrode active material layer containing a negative electrode active material is formed on a surface of a negative electrode current collector, and a separator, a ratio of a rated capacity to a pore volume of the negative electrode active material layer being 1.12 Ah/cc or more, a ratio of a battery area to a rated capacity being 4.0 cm2/Ah or more, and a rated capacity being 30 Ah or more, wherein a variation in porosity in the negative electrode active material layer is 6.0% or less.