Method and device for making electric energy storage assemblies
AssigneeBatscap
InventorsOlivier Caumont, Fabrice Le Driant, Philippe Mando
Life of this patent
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Abstract
The invention relates to a method for making an electric energy storage assembly (1) including a cylindrical coil member (10) having a current collecting section at each end thereof, wherein the method comprises the step of radially coating at least one current collecting section at the end thereof from the center to the periphery of the end of the collecting section. The invention also relates to a device for implementing said method and to a storage assembly obtained by said method.
Claims36
A process for manufacturing an electric energy storage assembly comprising a cylindrical coil element comprising at least two electrodes and at least one separator wound together in turns, each electrode overlapping at a respective axial end of the coil element to form a current-collecting section on which at least one current-collecting piece connected electrically to a cover is intended to be welded, said cover closing off a casing accommodating the coil element, wherein the process comprises a radial crushing step of an end of at least one current-collecting section,
- wherein the radial crush step is carried out by application of least one roller comprising at least one rotating ball compressing the end of said at least one current-collecting section from the centre to the periphery of the end of said at least one current-collecting section.
A manufacturing device for an electric energy storage assembly comprising a cylindrical coil element comprising at least two electrodes and at least one separator wound together in turns, each electrode overlapping at a respective axial end of the coil element to form a current-collecting section on which at least one current-collecting piece connected electrically to a cover is intended to be welded, said cover closing off a casing accommodating the coil element, wherein the device comprises radial coating crushing means of an end of at least one current-collecting section at its end, from the centre to the periphery of the end of said at least one collecting section,
- wherein the radial crushing means comprise at least one roller comprising at least one rotating ball for crushing by compression the end of said at least one current-collecting section from the centre to the periphery of the end of said at least one collecting section.
Dependencies are inferred from the claim text.