Patent ID: 9203057
Filing Date: 2015-12-01
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A battery comprising: a power generating element having a flattened shape and housed in a container, the power generating element comprising a positive electrode plate and a negative electrode plate, which are wound with a separator sandwiched therebetween, and a winding core about which the positive and negative electrode plates and the separator are wound, the winding core having flexibility and having a flattened shape; a thin-plate-shaped member having higher rigidity than the winding core; and a current collector disposed outside the power generating element, the current collector comprising a first plate and a second plate, a cross-section of the first and second plates, taken along a winding axis of the winding core, being an L-shape, the current collector further comprising a connection plate which is perpendicularly attached to the second plate, the first plate being attached to an electrode terminal, the connection plate being attached to the power generating element, wherein the winding core includes, in its sectional view cut along a line perpendicular to the winding axis of the winding core, a flat portion and bent portions, and the thin-plate-shaped member is attached to at least one of opposite end portions in a direction of the winding axis of the winding core such that the thin-plate-shaped member is attached at least to the bent portion, the thin-plate-shaped member includes, in its sectional view cut along the line perpendicular to the winding axis of the winding core, a flat portion and bent portions, the flat portion of the thin-plate-shaped member being disposed in parallel to the flat portion of the power generating element and the connection plate of the current collector, and a portion of the flat portion of the power generating element is sandwiched between the connection plate of the current collector and the flat portion of the thin-plate-shaped member.