Abstract: A secondary battery includes an electrode assembly and a pocket. The electrode assembly includes a plurality of electrode plates and a separator including a first separator layer and a second separator layer. The plurality of electrode plates include a first outermost electrode plate, a second outermost electrode plate, a first second-to-outermost electrode plate, and a second second-to-outermost electrode plate. The first outermost electrode plate and the second outermost electrode plate are located on two opposite sides of the plurality of electrode plates in the first direction. The first outermost electrode plate and the first second-to-outermost electrode plate are located on two opposite sides of the first separator layer. The second outermost electrode plate and the second second-to-outermost electrode plate are located on two opposite sides of the second separator layer. The pocket includes a first sidewall extending in the first direction.

Abstract: A battery cell includes a first electrode assembly, a second electrode assembly and a housing. In a thickness direction of the battery cell, the first electrode assembly includes a first surface and a second surface opposite to the first surface, the second electrode assembly includes a third surface and a fourth surface opposite to the third surface. A housing includes an accommodation cavity configured to accommodate the first electrode assembly and the second electrode assembly, the accommodation cavity includes a bottom wall, and the first surface and the third surface are both opposite to the bottom wall. The battery cell further includes: a first adhesive layer, including a first bonding side and a second bonding side. The first bonding side is bonded to both the second surface and the fourth surface, and the second bonding side is bonded to the housing.

Abstract: A battery cell includes a first electrode assembly, a second electrode assembly and a housing. In a thickness direction of the battery cell, the first electrode assembly includes a first surface and a second surface opposite to the first surface, the second electrode assembly includes a third surface and a fourth surface opposite to the third surface. A housing includes an accommodation cavity configured to accommodate the first electrode assembly and the second electrode assembly, the accommodation cavity includes a bottom wall, and the first surface and the third surface are both opposite to the bottom wall. The battery cell further includes: a first adhesive layer, including a first bonding side and a second bonding side. The first bonding side is bonded to both the second surface and the fourth surface, and the second bonding side is bonded to the housing.