System and method for sealing battery separator
First Claim
1. An apparatus, comprising:
- a stack of substantially planar battery electrode layers, the stack including a first electrode layer including a first tab and a second electrode layer including a second tab, with the first tab electrically connected to the second tab;
first and second separator layers sandwiching the first electrode layer, with the edges of the first and second separator layers connected with a welded portion of the first and second separator layers, the welded portion circumscribing one or more non-tabbed edge portions of the first electrode layer defining an opening through which the first tab extends;
a seal including a film disposed over the opening and connecting the first and second separator layers about the first tab;
a battery housing including at least one feedthrough aperture;
a feedthrough conformed and sealed to the feedthrough aperture; and
electrolyte disposed in the battery housing,wherein the first and second separator layers are each adapted to melt to resist ionic transport at a predetermined melting temperature.
1 Assignment
0 Petitions
Accused Products
Abstract
One embodiment of the present subject matter includes a battery having a stack of substantially planar battery electrodes, the stack including a first electrode including a first tab, and a second electrode including a second tab, with the first tab electrically connected to the second tab. The embodiment includes a first separator layer and a second separator layer sandwiching the first electrode, with the edges of the first separator layer and the second separator connected with a weld, the first separator layer and the second separator layer defining an interior space in which the first electrode is disposed, with the first tab extending outside the interior space. The embodiment includes an battery housing having electrolyte disposed therein, the housing including at least a first aperture and a feedthrough aperture; a lid conformed and sealed to the first aperture; and a feedthrough conformed and sealed to the feedthrough aperture.
43 Citations
33 Claims
-
1. An apparatus, comprising:
-
a stack of substantially planar battery electrode layers, the stack including a first electrode layer including a first tab and a second electrode layer including a second tab, with the first tab electrically connected to the second tab; first and second separator layers sandwiching the first electrode layer, with the edges of the first and second separator layers connected with a welded portion of the first and second separator layers, the welded portion circumscribing one or more non-tabbed edge portions of the first electrode layer defining an opening through which the first tab extends; a seal including a film disposed over the opening and connecting the first and second separator layers about the first tab; a battery housing including at least one feedthrough aperture; a feedthrough conformed and sealed to the feedthrough aperture; and electrolyte disposed in the battery housing, wherein the first and second separator layers are each adapted to melt to resist ionic transport at a predetermined melting temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. An apparatus, comprising:
-
a stack of substantially planar lithium battery electrode layers, the stack including a first lithium anode layer including a lithium patch disposed on a substrate, the first lithium anode layer including a first tab, the stack including a second anode layer including a second tab, with the first tab electrically connected to the second tab; first and second separator layers sandwiching the first anode layer, with the edges of the first and second separator layers connected with a welded portion of the first and second separator layers, the welded portion circumscribing one or more non-tabbed edge portions of the first electrode layer defining an opening through which the first tab extends; a seal including a film disposed over the opening and connecting the first and second separator layers about the first tab; a cathodic battery housing including at least one feedthrough aperture; a feedthrough conformed and sealed to the feedthrough aperture, with the feedthrough electrically coupled to the first anode layer and electrically isolated from the cathodic battery housing; and electrolyte disposed in the battery housing, wherein the first and second separator layers are each adapted to melt to resist ionic transport at a predetermined melting temperature, wherein the welded portion defines an opening with the lithium patch disposed from the opening at a selected distance and wherein the apparatus is adapted to deliver from about 0.23 amp hours per cubic centimeter of battery housing volume to about 0.5 amp hours per cubic centimeter of battery housing volume. - View Dependent Claims (32, 33)
-
Specification