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US 2014/0272503 A1Published application
Drop and vibration resistant electrochemical cell
AssigneeSaft
InventorsDaniel KELLEY, Bridget DEVENEY, David ADDISON
Life of this patent
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Abstract
An electrochemical cell including an electrode assembly including a winding core, a first electrode, a second electrode, and a separator, the first electrode, the second electrode, and the separator being wound around the winding core, a current collector connected to the first electrode, and a case that accommodates the wound electrode assembly and the current collector. The winding core is welded to the current collector.
Claims19
An electrochemical cell comprising:
- an electrode assembly comprising a winding core, a first electrode, a second electrode, and a separator, the first electrode, the second electrode and the separator being wound around the winding core;
- a current collector connected to the first electrode;
- and
- a case that accommodates the wound electrode assembly and the current collector,
- wherein the winding core is welded to the current collector.
2 more elements
An electrochemical cell including:
- a winding core extending in an axial direction;
- an electrode assembly including a first electrode and a second electrode wound around an outer circumference of the winding core, the wound electrode assembly having a first diameter;
- a case extending in the axial direction and having a second diameter that is greater than the first diameter, the case being configured to accommodate the wound electrode assembly;
- and
- wherein the winding core is mechanically fixed to the case.
2 more elements
A method of making an electrochemical cell, the method comprising:
- welding a current collector to a winding core of an electrode assembly;
- inserting the wound electrode assembly into a case;
- and
- disposing a material, which swells between the current collector and the case.
1 more element
Dependencies are inferred from the claim text.