Wilson Greatbatch Technologies, Inc.

Wilson Greatbatch Ltd.

Greatbatch Ltd.

Kenneth L Grubb

Dominick J Frustaci

William M Paulot

Paul T Hallifax

Xiangyang Steve Dai

Philip S Wutz

David R Ciurzynski

Gary Freitag

Mark J Roy

Kenneth B Talamine

Brian D Panzer

Lou Serpe

Harvey A Hornung, Ii

Harvey Hornung, Ii

Xiangyang Dai

A new weld configuration is used to obtain a robust and consistent resistance weld between the tabs of an anode current collector and the casing of an electrochemical cell. This is done by adding a resistive transferable electrode tip between at least one of the welding electrodes, preferably the movable welding electrode, and the stacked parts that are being joined together. The purpose of the transferable electrode tip is to generate a sufficient amount of heat during the welding process so that the stacked parts are joined together without adding any product functionality. In one embodiment of the present invention, the transferrable electrode tip is a stainless-steel ball, the stacked anode current collector tabs are of nickel, and the cell casing is of stainless-steel.

Transferable electrode tip for resistance welding an anode tab to the casing of an electrochemical cell

The present invention is directed to an electrochemical cell having plate electrodes housed inside a mating 'clamshell' casing. When mated together, the casing components are form-fitting with respect to the internal battery structure so as to reduce the overall size of the electrochemical package. A header assembly containing both a glass-to-metal seal opening for a terminal lead and an electrolyte fill opening is used in conjunction with the clamshell casing. The electrolyte fill opening is constructed with an elongated opening with at least two different radii. A first and second sealing element is welded within the electrolyte fill opening at different depths within the header to block the flow of electrolyte and form a hermetic seal.

Dual weld plug for an electrochemical cell

A pin to plate joint and method of making the joint comprising a plate comprising an entry side and an exit side with the plate defining cutouts, and the pin movable through the plate from the entry side to the exit side and in doing so pushes tab members at angles to the exit side of the plate at bends. The bends in the plate define an opening in the plate, and flow spaces are defined between the pin sidewall and the bends in the plate, with the tab members being heated to form melted tab material and flowing the melted tab material into the flow spaces and cooling, forming a pin to plate joint.

Pin to thin plate joint and method for making the joint

An electrochemical cell having plate electrodes housed inside mating 'clam shell' casing components. is described. When mated together, the casing components are form fitting with respect to the internal battery structure so as to reduce the overall size of the electrochemical package. A one-piece header containing both a glass-to-metal seal opening for a terminal lead and an electrolyte fill opening is used in conjunction with the clam shell casing.

Method for providing a one-piece header assembly for hermetic battery terminal feedthrough, fill and closure designs

A bonding pad for connecting an electrical energy storage device to an implantable medical device, is described. The bonding pad comprises at least two contact surface, one have a channel for receiving the terminal lead of the electrical storage device, the other being relatively planar for contact to the medical device. That way, the channel provide for increased surface area contact with the terminal lead for a more robust connection while the opposite, planar contact surface provides flexibility for contact to a lead of the medical device.

Wire bonding surface for connecting an electrical energy storage device to an implantable medical device

A bonding pad for connecting an electrical energy storage device to an implantable medical device, is described. The bonding pad comprises at least two contact surfaces, one have a channel for receiving the terminal lead of the electrical energy storage device, the other being relatively planar for contact to the medical device. That way, the channel provides for increased surface area contact with the terminal lead for a more robust connection while the opposite, planar contact surface provides flexibility for contact to a lead of the medical device.

Wire bonding surface

The present invention is directed to an electrochemical cell having plate electrodes housed inside mating &ldquo;clam shell&rdquo; casing components. Also, the present casing design allows for indentation structures in the casing components by virtue of them being stamped metal parts. Such indentations are not possible with traditional cylindrical and prismatic casing designs. When mated together, the casing components are form-fitting with respect to the internal battery structure so as to reduce the overall size of the electrochemical package. This provides the cell with the greatest amount of energy per unit size.

Electrochemical cell having a casing of mating portions

The present invention is directed to an electrochemical cell having plate electrodes housed inside mating &ldquo;clam shell&rdquo; casing components. When mated together, the casing components are form-fitting with respect to the internal battery structure so as to reduce the overall size of the electrochemical package. A one piece header containing both a glass-to-metal seal opening for a terminal lead and an electrolyte fill opening is used in conjunction with the clam shell casing.

Growing community of inventors

Snyder, NY, United States of America

Kenneth L Grubb