Casing material for power storage device, production method therefor, and power storage device
AssigneeDai Nippon Printing Co., Ltd.
InventorsDaisuke Yasuda, Makoto Amano, Takanori Yamashita
Life of this patent
Estimating the term…
Abstract
A casing material for a power storage device, including a laminate that includes, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The heat-fusible resin layer includes a single layer or a plurality of layers. The heat-fusible resin layer includes at least one layer having a hardness of at least 70 MPa from a cross-section in the lamination direction of the laminate, measured using a nanoindentation method using an indentation load of 100 μN.
Claims28
A power storage device outer packaging material which comprises a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer in this order,
- the heat-sealable resin layer comprising a resin containing a polyolefin backbone,
- the heat-sealable resin layer including a single layer or multiple layers,
- the heat-sealable resin layer including at least one layer having a hardness of 70 MPa or more as measured from a cross-section in a lamination direction of the laminate under a load of indentation of 100 μN in a nanoindentation method.
A method for producing a power storage device outer packaging material, comprising the step of laminating at least a base material layer, a barrier layer and a heat-sealable resin layer in this order to obtain a laminate,
- the heat-sealable resin layer comprising a resin containing a polyolefin backbone,
- the heat-sealable resin layer including a single layer or multiple layers,
- the heat-sealable resin layer including at least one layer having a hardness of 70 MPa or more as measured from a cross-section in a lamination direction of the laminate under a load of indentation of 100 μN in a nanoindentation method.
A power storage device outer packaging material which comprises a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer in this order,
- the barrier layer comprising aluminum alloys or stainless steel,
- the heat-sealable resin layer including a single layer or multiple layers,
- the heat-sealable resin layer including at least one layer having a hardness of 70 MPa or more as measured from a cross-section in a lamination direction of the laminate under a load of indentation of 100 μN in a nanoindentation method.
Dependencies are inferred from the claim text.