Implantable current collector ID matrix identifier
First Claim
1. An electrical energy storage device, which comprises:
- a) a first electrode comprising an electrode active material contacted to a support portion of a current collector, wherein the current collector has an exposed tab provided with unique identifying marks;
b) a second, counter electrode;
c) a separator disposed between the first and second electrodes to prevent direct contact between them when they are in electrical association with each other;
d) a casing housing the first and second electrodes; and
e) a first terminal connected to the current collector of the first electrode and a second, opposite polarity terminal connected to the second electrode.
4 Assignments
0 Petitions
Accused Products
Abstract
A cell including a cathode having a second cathode active material of a relatively high energy density but of a relatively low rate capability sandwiched between two current collectors and with a first cathode active material having a relatively low energy density but of a relatively high rate capability in contact with the opposite sides of the current collectors, is described. In this type of cell construction, it is important that the weight ratio of the first and second cathode active materials is within a strict tolerance. Further, it is important to be able to track and record this information, as well as other data, for each cell built in a production facility. Marking the current collectors and the cell casing with identifying I.D. matrixes that are read and recorded during cell manufacture does this.
15 Citations
23 Claims
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1. An electrical energy storage device, which comprises:
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a) a first electrode comprising an electrode active material contacted to a support portion of a current collector, wherein the current collector has an exposed tab provided with unique identifying marks;
b) a second, counter electrode;
c) a separator disposed between the first and second electrodes to prevent direct contact between them when they are in electrical association with each other;
d) a casing housing the first and second electrodes; and
e) a first terminal connected to the current collector of the first electrode and a second, opposite polarity terminal connected to the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable medical device powered by an electrochemical cell, the cell comprising:
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a) a current collector comprising a support portion and a tab provided with unique identifying marks, wherein the support portion of the current collector comprises opposed first and second major faces contacted with silver vanadium oxide and fluorinated carbon, respectively, while the tab remains exposed;
b) a second, counter electrode;
c) a separator disposed between the first and second electrodes to prevent direct contact between them when they are in electrical association with each other;
d) a casing housing the first and second electrodes; and
e) a first terminal connected to the current collector of the first electrode and a second, opposite polarity terminal connected to the second electrode. - View Dependent Claims (14, 15)
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16. A method for providing an electrochemical cell, comprising the steps of:
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a) providing a current collector having a support portion intended to be contacted by an electrode active material and a tab;
b) providing unique identifying marks on the current collector tab;
c) contacting an electrode active material to the support portion of the current collector while leaving the tab exposed, thereby providing a first electrode;
d) providing a second, counter electrode;
e) disposing a separator between the first and second electrodes housed inside a casing with the current collector of the first electrode connected to a first terminal and the second electrode connected to a second terminal; and
f) activating the first and second electrodes with an electrolyte filled into the casing. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification