# US 2016/0254516 A1 · Battery Stack Having Interleaved Anode and Cathode

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- Number: US 2016/0254516 A1
- Document ID: US20160254516A1
- Status: Published application
- Kind: A1
- Application number: 15/152,166
- Filed: 2016-05-11
- Published: 2016-09-01
- Earliest claimed: 2013-01-31
- Assignees: Pacesetter, Inc.
- Applicants: Pacesetter, Inc.
- Inventors: Russell Bruch
- Web page: https://patentgrep.com/patent/US20160254516A1

## CPC

- H01M 10/045: {Cells or batteries with folded plate-like electrodes}
- H01M 6/46: of flat cells
- H01M 50/533: characterised by the shape of the leads or tabs
- H01M 50/534: characterised by the material of the leads or tabs
- H01M 50/54: Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
- H01M 2220/30: Batteries in portable systems, e.g. mobile phone, laptop
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y10T 29/49108: Electric battery cell making
- Y10T 29/4911: including sealing
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A cathode element is formed as a continuous single element with a plurality of cathode leaves connected by cathode bridges. An anode element is similarly formed as a continuous single element with a plurality of anode leaves connected by anode bridges. The cathode element and anode element can be aligned and interleaved at spaces between adjacent leaves. The resulting battery pre-stack can then be folded along its bridges in alternating directions to form a battery stack whose layers alternate between an anode and cathode, and which requires minimal components and minimal or no welds.

## Claims

### Claim 1

A battery stack comprising:
a plurality of cathode leaves connected in series via a plurality of cathode bridges, wherein a cathode slit is disposed between adjacent cathode leaves at each cathode bridge; and
a plurality of anode leaves connected in series via a plurality of anode bridges, wherein an anode slit is disposed between adjacent anode leaves at each anode bridge, and
wherein the cathode leaves are interleaved with the anode leaves such that each cathode slit receives an anode bridge, and each anode slit receives a cathode bridge, and the anode leaves and cathode leaves are folded together such that the anode leaves and cathode leaves are stacked in an alternating manner to form the battery stack.

### Claim 2 (depends on 1)

The battery stack of claim 1, wherein the plurality of cathode leaves comprise a continuous cathode element, and
wherein the plurality of anode leaves comprise a continuous anode element.

### Claim 3 (depends on 1)

The battery stack of claim 1, wherein at least one of the cathode bridges and at least one of the anode bridges are disposed on a same side of the battery stack.

### Claim 4 (depends on 1)

The battery stack of claim 1, wherein a first anode leaf defines a first end of the battery stack, and
wherein a second anode leaf defines a second end of the battery stack opposite the first end.

### Claim 5 (depends on 1)

The battery stack of claim 1, further comprising:
a cathode tab integrally connected with one of the plurality of cathode leaves; and
an anode tab integrally connected with one of the plurality of anode leaves.

### Claim 6

The battery stack of 1, wherein each of the cathode slits defines a spacing between adjacent cathode leaves, and
wherein each of the anode slits defines a spacing between adjacent anode leaves.

### Claim 7 (depends on 6)

The battery stack of claim 6, wherein each of the cathode bridges traverses a corresponding cathode slit, and
wherein each of the anode bridges traverses a corresponding anode slit.