Electrical energy storage element, method and apparatus for producing said electrical energy storage element
First Claim
1. An electrical energy storage element in which a plurality of electrochemical cells that are each formed with a cathode (20) and an anode (50) as electrodes and with an electrolyte (30) are arranged stacked above one another and are enclosed at one side by a cover plate (10) formed from an electrically conductive material, and at the opposite side by a base plate (12) formed from an electrically conductive material, wherein the base plate (12) is coated with a cathode (20) or an anode (50) and the cover plate (10) is coated in a complementary manner with an anode (50) or a cathode (20);
- and the anodes (50) and cathodes (20) are each formed at oppositely disposed surfaces of an electrically conductive carrier film (70) having an outer peripheral margin which is free of electrode material and which connects adjacent electrochemical cells to one another in a hermetically sealed manner with respect to the environment by a sealing and bonding agent, each electrically conductive carrier film individually contacted with electrically insulated wires that are led through said sealing and bonding agent;
wherein the anodes are formed from a lithium titanate (LTO) having a spinel structure and the high-voltage cathodes are formed from a lithium nickel manganate (LNMO) having a spinel structure or from lithium phosphates (LP) in an olivine structure, and a respective separator layer (40) is present between the electrolytes (30) and an electrode of an electrochemical cell with a gel-like electrolyte (30) and no separator layer (40) is present with a solid electrolyte.
1 Assignment
0 Petitions
Accused Products
Abstract
In the electrical energy storage element in accordance with the invention, a plurality of electrochemical cells that are each formed with a cathode and an anode as electrodes and an electrolyte are arranged stacked above one another. They are enclosed at one side by a top plate formed from an electrically conductive material, in particular aluminum, and at the oppositely disposed side by a base plate formed from an electrically conductive material, in particular aluminum. The base plate is coated by a cathode or by an anode and the cover plate is coated in a complementary manner by an anode or by a cathode. The anodes and cathodes are each formed at oppositely disposed surfaces of an electrically conductive carrier film which preferably comprises aluminum, copper, steel or an electrically conductive plastic. An outer peripheral margin is present at the carrier film that is free of electrode material and connects adjacent electrochemical cells to one another in a hermetically sealed manner with respect to the environment by means of a sealing and bonding agent. The anodes comprise a lithium titanate (LTO) having a spinel structure and the high-voltage cathodes are formed from a lithium nickel manganate (LNMO) having a spinel structure or from lithium phosphates (LP) in an olivine structure. With a gel electrolyte, a respective separator layer is present between the electrolyte and an electrode of an electrochemical cell and with a solid electrolyte no separator layer is present.
-
Citations
12 Claims
-
1. An electrical energy storage element in which a plurality of electrochemical cells that are each formed with a cathode (20) and an anode (50) as electrodes and with an electrolyte (30) are arranged stacked above one another and are enclosed at one side by a cover plate (10) formed from an electrically conductive material, and at the opposite side by a base plate (12) formed from an electrically conductive material, wherein the base plate (12) is coated with a cathode (20) or an anode (50) and the cover plate (10) is coated in a complementary manner with an anode (50) or a cathode (20);
- and the anodes (50) and cathodes (20) are each formed at oppositely disposed surfaces of an electrically conductive carrier film (70) having an outer peripheral margin which is free of electrode material and which connects adjacent electrochemical cells to one another in a hermetically sealed manner with respect to the environment by a sealing and bonding agent, each electrically conductive carrier film individually contacted with electrically insulated wires that are led through said sealing and bonding agent;
wherein the anodes are formed from a lithium titanate (LTO) having a spinel structure and the high-voltage cathodes are formed from a lithium nickel manganate (LNMO) having a spinel structure or from lithium phosphates (LP) in an olivine structure, and a respective separator layer (40) is present between the electrolytes (30) and an electrode of an electrochemical cell with a gel-like electrolyte (30) and no separator layer (40) is present with a solid electrolyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- and the anodes (50) and cathodes (20) are each formed at oppositely disposed surfaces of an electrically conductive carrier film (70) having an outer peripheral margin which is free of electrode material and which connects adjacent electrochemical cells to one another in a hermetically sealed manner with respect to the environment by a sealing and bonding agent, each electrically conductive carrier film individually contacted with electrically insulated wires that are led through said sealing and bonding agent;
Specification