Secondary battery, electronic device, and method for manufacturing secondary battery
AssigneeNingde Amperex Technology Limited
InventorsRui LI, Lin LI, Peipei GUO, Zhiqi HUANG
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Abstract
A secondary battery includes a housing and an electrode assembly. The housing includes a packaging film. The packaging film is wrapped around to enclose the electrode assembly. The housing further includes an adhesive layer. The packaging film is coated with the adhesive layer on a surface facing away from the electrode assembly. The adhesive layer includes a resin compound. A tensile elongation at break of the packaging film is φ1, and a tensile elongation at break of a part of the housing coated with the adhesive layer is φ2, wherein φ2<φ1.
Claims20
A secondary battery, comprising a housing and an electrode assembly, wherein the housing comprises a packaging film, and the packaging film is wrapped around to enclose the electrode assembly,
- wherein the housing further comprises an adhesive layer, the packaging film is coated with the adhesive layer on a surface facing away from the electrode assembly;
- and the adhesive layer comprises a resin compound, a tensile elongation at break of the packaging film is φ1, and a tensile elongation at break of a part of the housing coated with the adhesive layer is φ2, wherein φ2<φ1.
Dependencies are inferred from the claim text.