Welding methods and apparatus for batteries
AssigneeMedtronic, Inc.
InventorsHailiang Zhao, Kurt Casby
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention provide an electrochemical cell including an electrode assembly having one or more of the electrodes being coupled to a feedthrough assembly. The one or more electrodes each include a connection tab. The connection tab extends a distance from separation material between the one or more electrodes (e.g., anode and cathode). The connection tab is provided to contact (e.g., electrically connected) a feedthrough pin of the feedthrough assembly by laser welding. The feedthrough pin with respect to the connection tab is oriented in at least one position lying within a 90 degree orientation on the connection tab. The feedthrough pin is coupled to the connection tab by laser welding.
Claims20
An electrochemical cell of an implantable medical device, comprising:
- a battery coil having an electrode assembly, the electrode assembly having one or more electrodes, each of the one or more electrodes having a tab extending therefrom;
- and
- a battery header having a first feedthrough assembly, the first feedthrough assembly having a first feedthrough pin extending therefrom, the first feedthrough pin laser welded to a first tab extending from a first electrode of the one or more electrodes.
A method of manufacturing an electrochemical cell, comprising:
- providing a battery coil having an electrode assembly, the electrode assembly having one or more electrodes, each of the one or more electrodes having a tab extending therefrom;
- providing a battery header having a first feedthrough assembly, the first feedthrough assembly having a first feedthrough pin extending therefrom;
- joining the battery coil with the battery header so as to form a joined unit whereby the first feedthrough pin of the battery header extends across a first tab of the battery coil;
- and
- coupling the first feedthrough pin to the first tab by laser welding at a point where the first feedthrough pin contacts the first tab.
A method of manufacturing an electrochemical cell, comprising:
- providing an battery coil having an electrode assembly, the electrode assembly having one or more electrodes, each of the one or more electrodes having a tab extending therefrom;
- providing a battery header having a first feedthrough assembly, the first feedthrough assembly having a feedthrough pin extending therefrom;
- joining the battery coil with the battery header so as to form a joined unit whereby a first feedthrough pin of the battery header extends across a first tab of the battery coil and at least one of a coupling and a second feedthrough pin;
- providing a platform for the joined unit, the platform having a plurality of securing members, a heat sink, and a shield;
- positioning the joined unit on the platform so that the first tab contacts the heat sink;
- securing the joined unit to the platform using one or more securing members;
- positioning the shield so as to protect the battery coil during coupling of the first feedthrough pin and the first tab;
- and
- coupling the first feedthrough pin to the first tab by laser welding at a point where the first feedthrough pin contacts the first tab.
Dependencies are inferred from the claim text.