Electrochemical energy storage cell and battery

Patent metadata

Field	Value
Publication number	US-12548766-B2
Application number	US-202217979821-A
Country	US
Kind code	B2
Filing date	Nov 3, 2022
Priority date	Nov 13, 2021
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

An electrochemical energy storage cell includes a first electrically insulating substrate and a first electrical conductor layer extending on an area of the first electrically insulating substrate, a second electrically insulating substrate and a second electrical conductor layer extending on an area of the second electrically insulating substrate, a first electrode layer composed of positive electrode material, a second electrode layer composed of negative electrode material, a first separator layer, a stacked arrangement of the layers: the first electrically insulating substrate—the first electrical conductor layer—the first electrode layer—the first separator layer—the second electrode layer—the second electrical conductor layer—the second electrically insulating substrate, a first electrolyte enabling an ion flow between the electrode layers, an electrode region with the stacked arrangement of the electrode layers and a supercapacitor region, a second separator layer, a second electrolyte enabling an ion flow between the supercapacitor layers.

First claim

The invention claimed is:

1 . An electrochemical energy storage cell having a layered construction, comprising at least one electrode having
a. a first electrically insulating substrate and a first electrical conductor layer extending on an area of the first electrically insulating substrate, b. a second electrically insulating substrate and a second electrical conductor layer extending on an area of the second electrically insulating substrate, c. a first electrode layer composed of a positive electrode material, d. a second electrode layer composed of a negative electrode material, e. a first separator layer, f. a stacked arrangement of the layers in order: the first electrically insulating substrate—the first electrical conductor layer—the first electrode layer—the first separator layer—the second electrode layer—the second electrical conductor layer—the second electrically insulating substrate, g. a first electrolyte enabling an ion flow between the electrode layers, and further comprising at least one supercapacitor region having h. a first supercapacitor layer of a supercapacitor material, i. a second supercapacitor layer of a supercapacitor material, j. a second separator layer, k. a second electrolyte enabling an ion flow between supercapacitor layers, wherein l. in the at least one supercapacitor region a section of the first electrical conductor layer is covered with the first supercapacitor layer and a section of the second electrical conductor layer is covered with the second supercapacitor layer, and m. in the at least one supercapacitor region the supercapacitor layers lie one above another in a stacked arrangement in order: the first electrically insulating substrate—the first electrical conductor layer—the first supercapacitor layer—the second separator layer—the second supercapacitor layer—the second electrical conductor layer—the second electrically insulating substrate.

2 . The electrochemical energy storage cell according to claim 1 , having at least one of:
a. the supercapacitor material comprises activated carbon having a specific surface area of 1000 to 3000 m 2 per gram of activated carbon, b. the supercapacitor material comprises a conductive material, graphite and/or carbon black, c. the supercapacitor material comprises a binder material, d. the supercapacitor layers are applied to the electrical conductor layers by a printing paste, the printing paste comprising a solvent.

3 . The electrochemical energy storage cell according to claim 1 having:
a. the at least one electrode region and the at least one supercapacitor region including the electrode layers, separator layers, and the supercapacitor layers are enclosed by a housing, and
b. the housing is formed from the first electrically insulating substrate and the second electrically insulating substrate.

4 . The electrochemical energy storage cell according to claim 3 , having at least one of:
a. the first and/or the second electrical conductor layer comprise(s) a region provided for tapping off electrical energy of the energy storage cell by a consumer, b. the region for tapping off electrical energy of the energy storage cell lies outside the housing, and c. the at least one supercapacitor region contacts the first and/or the second electrical conductor layer between the region provided for tapping off electrical energy and the electrode region.

5 . The electrochemical energy storage cell according to claim 1 having:
a. the at least one supercapacitor region extends on an area proportion of 10 to 50% of the electrical conductor layers.

6 . The electrochemical energy storage cell according to claim 1 having at least one of:
a. at least one of the electrode layers is a printed layer,
b. at least one of the electrical conductor layers is a printed layer, and
c. at least one of the supercapacitor layers is a printed layer.

7 . The electrochemical energy storage cell according to claim 1 having at least one of:
a. the first electrode layer comprises a metal oxide, and
b. the second electrode layer comprises metallic zinc or a metallic zinc alloy.

8 . The electrochemical energy storage cell according to claim 1 having at least one of:
a. the first electrical conductor layer is not formed over the whole area and covers a proportion of 10 to 80% of that area of the first electrically insulating substrate on which the first electrical conductor layer extends, and
b. the second electrical conductor layer is not formed over the whole area and covers a proportion of 10 to 80% of that area of the second electrically insulating substrate on which the second electrical conductor layer extends.

9 . The electrochemical energy storage cell according to claim 1 having at least one of:
each of the first electrical conductor layer and the second electrical conductor layer comprises a conductor structure having a plurality of conductor tracks crossing one another,
wherein the plurality of conductor tracks are in a parallel alignment,
the plurality of conductor tracks crossing one another enclose quadrilateral free regions, and
the plurality of conductor tracks crossing one another form a grid structure.

10 . A battery comprising at least two electrochemical energy storage cells, of which at least one electrochemical energy storage cell is configured according to claim 1 .

11 . A battery according to claim 10 that provides high-current pulses having a current intensity of 100-400 mA for a time duration of 50-250 ms.

Assignees

• Varta Microbattery Gmbh

Inventors

• Krebs Martin

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M4/42

  Alloys based on zinc · CPC title

• H01M4/131

  Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title