IP Library › Granted Patent US 12,438,238
Granted Patent B1
US 12,438,238 · App. 17/659,100 · Granted Oct 7, 2025

Inter-cell connection materials

Inventors: Qingcheng Zeng (San Jose, CA); Tobias Zeilinger (Palo Alto, CA); Kenzo Nagai (Fremont, CA); Donald G. Dafoe (San Jose, CA)
Assignee: Stacked Energy, Inc.
H01M50/502H01M10/0525H01M10/0585
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Quick Facts
Patent No.
US 12,438,238
App. No.
17/659,100
Granted
Oct 7, 2025
Kind
B1
Abstract

Batteries according to embodiments of the present technology may include a first battery cell including a first current collector. The batteries may include a second battery cell including a second current collector. The second battery cell may be vertically aligned with the first battery cell, and the second current collector may be positioned adjacent the first current collector. The first battery cell and the second battery cell may be electrically coupled together so the first battery cell and the second battery cell transfer current through the cells between the first current collector and the second current collector. The batteries may also include a patterned coupling material disposed between the first battery cell and the second battery cell and joining the first current collector with the second current collector.

Claims (12)

1. A stacked battery comprising:

a first battery cell comprising a cathode current collector;

a second battery cell disposed on the first battery cell, wherein the second battery cell comprises an anode current collector; and

an adhesive foil positioned between and electrically coupling the cathode current collector of the first battery cell with the anode current collector of the second battery cell,

wherein the adhesive foil comprises a metal material characterized by alternating sections including a set of first sections extending parallel to the anode current collector or the cathode current collector, and a set of second sections extending orthogonally to the anode current collector or the cathode current collector.

2. The stacked battery of claim 1 , wherein the alternating sections define a series of trenches along a length of the metal material, and wherein an adhesive is disposed within each trench of the series of trenches.

3. The stacked battery of claim 2 , wherein the adhesive comprises a non-conductive adhesive.

4. The stacked battery of claim 1 , wherein each section of the set of first sections alternates between being positioned adjacent the cathode current collector and the anode current collector.

5. The stacked battery of claim 1 , wherein each section of the set of first sections is in electrical contact with either the cathode current collector of the first battery cell or the anode current collector of the second battery cell.

6. The stacked battery of claim 1 wherein a subset of sections of the set of first sections is characterized by a length greater than a length of each section of the set of second sections.

7. The stacked battery of claim 1 , wherein the metal material comprises at least one metal selected from a group consisting of aluminum, copper, and titanium.

8. The stacked battery of claim 1 , wherein the stacked battery is characterized by an area greater than about 0.25 m 2 .

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 10, 2024
From: APPLE INC.
To: STACKED ENERGY, INC.
Reel/Frame 069543/0126 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 4, 2024
From: ZENG, QINGCHENG; ZEILINGER, TOBIAS; NAGAI, KENZO; DAFOE, DONALD G.
To: APPLE INC.
Reel/Frame 069510/0237 →
SECURITY INTEREST Recorded Nov 8, 2024
From: STACKED ENERGY, INC.
To: APPLE INC.
Reel/Frame 069209/0540 →
Continuity (2)
Division 16108498 · Aug 22, 2018
Provisional Application 62561534 · Sep 21, 2017
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