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US 11,777,163 B2Granted
Battery cell
AssigneeHonda Motor Co., Ltd.
InventorsTakuya Taniuchi, Masahiro Ohta, Toshiyuki Ariga
Life of this patent
Estimating the term…
Abstract
To reduce influence of external force on a current collection tab lead and a current collection tab in a laminated cell type battery. A single film of an exterior body contacts and covers a top surface, a bottom surface, and two side surfaces of a battery perpendicular to an end surface of the battery from which a current collection tab and a current collection tab lead are provided to extend, covers the end surface of the battery from which the current collection tab and the current collection tab lead protrude, and is folded in from both short sides of the end surface such that triangular pyramid-shaped spaces are formed on both sides. A reinforcement member is arranged in and joined to each triangular pyramid-shaped space.
Claims27
A battery cell comprising:
- a battery;
- an exterior body housing the battery;
- a current collection tab and a current collection tab lead that are provided to extend from one end surface of the battery;
- the exterior body comprising:
- a first portion contacting and covering a top surface, a bottom surface, and two side surfaces of the battery perpendicular to the one end surface from which the current collection tab and the current collection tab lead are provided to extend;
- a second portion covering the one end surface of the battery, from which the current collection tab and the current collection tab lead protrude, folded in from both short sides of the one end surface such that triangular pyramid-shaped spaces are formed on the both sides, and folded from both long sides of the one end surface such that the second portion is entirely formed in a triangular prism shape to cover the one end surface;
- and a third portion provided to further extend in an axial direction from the one end surface-covering second portion and having upper and lower surfaces joined to hold the current collection tab and the current collection tab lead between the upper and lower surfaces;
- and
- a reinforcement member provided in and joined to each triangular pyramid-shaped space,
- wherein the reinforcement member is a four-sided body opening on one side, the four-sided body having three surfaces including one triangular surface to be joined to the one end surface, from which the current collection tab and the current collection tab lead extend, in the triangular pyramid-shaped space and two surfaces to be joined to two surfaces of the exterior body forming the triangular pyramid-shaped space without being joined to the one end surface upon folding,
- wherein the reinforcement member has a folded-back portion at a position of the reinforcement member corresponding to an outer opening of the triangular pyramid-shaped space formed in the exterior body and the folded-back portion is folded back to an outside of the exterior body.
8 more elements
A battery cell comprising:
- a battery;
- an exterior body housing the battery;
- a current collection tab and a current collection tab lead that are provided to extend from one end surface of the battery;
- the exterior body comprising:
- a first portion contacting and covering a top surface, a bottom surface, and two side surfaces of the battery perpendicular to the one end surface from which the current collection tab and the current collection tab lead are provided to extend;
- a second portion covering the one end surface of the battery, from which the current collection tab and the current collection tab lead protrude, folded in from both short sides of the one end surface such that triangular pyramid-shaped spaces are formed on the both sides, and folded from both long sides of the one end surface such that the second portion is entirely formed in a triangular prism shape to cover the one end surface;
- and a third portion provided to further extend in an axial direction from the one end surface-covering second portion and having upper and lower surfaces joined to hold the current collection tab and the current collection tab lead between the upper and lower surfaces;
- and
- a reinforcement member provided in and joined to each triangular pyramid-shaped space,
- wherein the reinforcement member is a hollow four-sided body having four surfaces defining four surfaces in the triangular pyramid-shaped space,
- wherein the reinforcement member has a folded-back portion at a position of the reinforcement member corresponding to an outer opening of the triangular pyramid-shaped space formed in the exterior body and the folded-back portion is folded back to an outside of the exterior body.
8 more elements
A battery cell comprising:
- a battery;
- an exterior body housing the battery;
- a current collection tab and a current collection tab lead that are provided to extend from one end surface of the battery;
- the exterior body comprising:
- a first portion contacting and covering a top surface, a bottom surface, and two side surfaces of the battery perpendicular to the one end surface from which the current collection tab and the current collection tab lead are provided to extend;
- a second portion covering the one end surface of the battery, from which the current collection tab and the current collection tab lead protrude, folded in from both short sides of the one end surface such that triangular pyramid-shaped spaces are formed on the both sides, and folded from both long sides of the one end surface such that the second portion is entirely formed in a triangular prism shape to cover the one end surface;
- and a third portion provided to further extend in an axial direction from the one end surface-covering second portion and having upper and lower surfaces joined to hold the current collection tab and the current collection tab lead between the upper and lower surfaces;
- and
- a reinforcement member provided in and joined to each triangular pyramid-shaped space,
- wherein the reinforcement member is a frame body including six frames along six sides of the triangular pyramid-shaped space.
7 more elements
Dependencies are inferred from the claim text.