Welding methods and apparatus for batteries
First Claim
1. 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.
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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.
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Citations
20 Claims
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1. An electrochemical cell of an implantable medical device, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of manufacturing an electrochemical cell, comprising:
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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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of manufacturing an electrochemical cell, comprising:
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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. - View Dependent Claims (20)
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Specification