Patent ID: 11923560
Assignee: PRIME PLANET ENERGY & SOLUTIONS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A secondary battery, comprising:
an electrode plate including
a main body portion, and
an electrode terminal portion protruding from the main body portion along a first direction; and

a separator adhered to the electrode plate, wherein
the main body portion of the electrode plate includes
a central region including a center position of the main body portion in the first direction,
a first region closer to the electrode terminal portion than the central region in the first direction, and
a second region located on a side opposite to the first region with respect to the central region in the first direction,

adhesion strength per unit area between the electrode plate and the separator in the first region is higher than adhesion strength per unit area between the electrode plate and the separator in the second region,
the central region is defined by
two peripheral edges of the main body portion opposite to each other in a second direction crossing the first direction,
a first boundary separating the central region from the first region and extending in the second direction between the two peripheral edges, and
a second boundary separating the central region from the second region and extending in the second direction between the two peripheral edges,

the first region is defined by
the two peripheral edges,
a first edge connecting the two peripheral edges, and
the first boundary, and

the second region is defined by
the two peripheral edges,
a second edge opposite to the first edge and connecting the two peripheral edges, and
the second boundary.