초록 ▼

An electrochemical cell including an alkali metal anode and a cathode, one of the anode or cathode being connected to a structure for making electrical connection from a load to the cell, the other of the anode or cathode having main and alternate portions, a main terminal connected to the main anod

An electrochemical cell including an alkali metal anode and a cathode, one of the anode or cathode being connected to a structure for making electrical connection from a load to the cell, the other of the anode or cathode having main and alternate portions, a main terminal connected to the main anode or cathode portion for making electrical connection between a load and the cell, and an alternate terminal connected to the alternate anode or cathode portion for making electrical connection between a load and the cell, so that the main anode or cathode portion first is discharged with the alternate portion held in reserve, whereupon when the main portion reaches end of life the alternate anode or cathode portion is discharged. The main and alternate anode or cathode portions are insulated from each other, and the anode preferably is of lithium. There is also provided a voltage responsive switch means in combination with the cell and connected electrically between a load and the main and alternate terminals for connecting the main terminal initially to the load and then disconnecting the main terminal and connecting the alternate terminal to the load when the main portion reaches end of life. The cell can be provided with a casing of electrically conductive material with one of the anode or cathode being connected to the casing for making electrical connection to the load through the casing.

대표청구항 ▼

In an electrochemical cell for use with an implantable medical device and including an alkali metal anode and a cathode within an elongated conductive casing having spaced-apart substantially parallel side walls, one of said anode and cathode being operatively connected to said casing for making ele

In an electrochemical cell for use with an implantable medical device and including an alkali metal anode and a cathode within an elongated conductive casing having spaced-apart substantially parallel side walls, one of said anode and cathode being operatively connected to said casing for making electrical connection from a load to the cell, the other of said anode and cathode having main and alternate portions, main terminal means electrically insulated from said casing and operatively connected to said main portion for making electrical connection from a load to the cell, alternate terminal means electrically insulated from said casing and operatively connected to said alternate portion for making electrical connection from a load to the cell, so that the main portion first is discharged with the alternate portion held in reserve whereupon when the main portion reaches end of life the alternate portion is discharged, said main and alternate portions together comprising an elongated body located generally centrally of said casing sidewalls, means for insulating said main and alternate portions from each other, and each of said main and alternate portions having a current collector therein disposed in a plane substantially parallel to said side walls and connected to a corresponding one of said main and alternate terminal means.