Battery stack having interleaved anode and cathode
AssigneePacesetter, Inc.
InventorRussell Bruch
Life of this patent
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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.
Claims19
A method of assembling a battery stack, the method comprising:
- preparing a cathode having a plurality of cathode leaves connected in series via a plurality of cathode bridges, wherein a slit is disposed between adjacent cathode leaves at each cathode bridge;
- preparing an anode having a plurality of anode leaves connected in series via a plurality of anode bridges, wherein a slit is disposed between adjacent anode leaves at each anode bridge;
- interleaving the plurality of cathode leaves with the plurality of anode leaves to form a pre-stack by aligning and mating the slits in the cathode with corresponding slits in the anode such that each cathode slit receives an anode bridge, and each anode slit receives a cathode bridge;
- and
- folding the pre-stack into a battery stack having alternating anode leaves and cathode leaves.
A method of assembling a battery stack, the battery stack having a cathode element with cathode portions separated from each other by slits and connected in series via a plurality of cathode bridges, and the battery stack having an anode element with anode portions separated from each other by slits and connected in series via a plurality of anode bridges, the method comprising:
- interleaving the cathode portions of the cathode element with the anode portions of the anode element by aligning and mating the slits in the cathode element with corresponding slits in the anode element to make an interleaved battery pre-stack;
- and
- folding the interleaved battery pre-stack to form the battery stack.
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.
The battery stack of 13, 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.
Dependencies are inferred from the claim text.