Soteria Battery Innovation Group, Inc.

Sateria Battery Innovation Group, Inc.

Carl C Hu

Brian G Morin

Drew J Pereira

Improvements in the structural components and physical characteristics of lithium battery articles are provided. Standard lithium ion batteries, for example, are prone to certain phenomena related to short circuiting and have experienced high temperature occurrences and ultimate firing as a result. Structural concerns with battery components have been found to contribute to such problems. Improvements provided herein include the utilization of thin metallized current collectors (aluminum and/or copper, as examples), high shrinkage rate materials, materials that become nonconductive upon exposure to high temperatures, and combinations thereof. Such improvements accord the ability to withstand certain imperfections (dendrites, unexpected electrical surges, etc.) within the target lithium battery through provision of ostensibly an internal fuse within the subject lithium batteries themselves that prevents undesirable high temperature results from short circuits. Battery articles and methods of use thereof including such improvements are also encompassed within this disclosure.

Lithium storage device with improved safety architecture

Energy storage device having thin current collector

Energy storage device having a current collector with inherent current limitations

A lithium battery cell with an internal fuse component and including needed tabs which allow for conductance from the internal portion thereof externally to power a subject device is provided. Disclosed herein are tabs that exhibit sufficient safety levels in combination with the internal fuse characteristics noted above while simultaneously displaying pull strength to remain in place during utilization as well as complete coverage with the thin film metallized current collectors for such an electrical conductivity result. Such tabs are further provided with effective welds for the necessary contacts and at levels that exhibit surprising levels of amperage and temperature resistance to achieve the basic internal fuse result with the aforementioned sufficient conductance to an external device. With such a tab lead component and welded structure, a further improvement within the lithium battery art is provided the industry.

Battery connections and metallized film components in energy storage devices having internal fuses

Battery with metallized film current collector having low internal resistance

A constrained, wound lithium-ion battery cell with an internal fuse component that exhibits significant improvements in terms of life-cycle times is provided. Disclosed herein are lithium-ion battery structures and configurations utilizing at least one thin metallized film current collector that provides safety features with low thermal runaway potential, low internal resistance, with a simplified manner of providing external electrical conductivity simultaneously. The provision of a highly constrained and wound structure thereof unexpectedly allows for extended charge/discharge cycle life that is significantly improved in comparison with previous wound lithium-ion battery devices. A range of shear and compression forces accords such results, with such forces permissible through various pathways, including winding curvatures, number of windings within the cell housing, hardness of housing, and structural geometries therein. Encompassed herein is also a method of providing long cycle life results for such specific devices.

Long cycle-life wound lithium-ion battery cells having metallized film current collectors

Improvements in the structural components and physical characteristics of lithium battery articles are provided. Standard lithium ion batteries, for example, are prone to certain phenomena related to short circuiting and have experienced high temperature occurrences and ultimate firing as a result. Structural concerns with battery components have been found to contribute to such problems. Improvements provided herein include the utilization of thin metallized current collectors (aluminum and/or copper, as examples), high shrinkage rate materials, materials that become nonconductive upon exposure to high temperatures, and combinations thereof. Such improvements accord the ability to withstand certain imperfections (dendrites, unexpected electrical surges, etc.) within the target lithium battery through provision of ostensibly an internal fuse within the subject lithium batteries themselves that prevents undesirable high temperature results from short circuits. Battery articles and methods of use thereof including such improvements are also encompassed.

A lithium battery cell with an internal fuse component without any welded tabs present for conductance from the internal portion thereof externally to power a subject device is provided. Disclosed herein are lithium ion (liquid electrolyte) battery configurations utilizing thin metallized film current collectors as conducting tabs that provide full electrical conductivity from one pole to another throughout the internal portions of the battery with sufficient space for liquid electrolyte flow as well. Such thin metallized film current collectors thus provide both safety features with low electrical charge runaway potential, low internal resistance, and high thermal conductivity with a simplified manner of providing external electrical conductivity simultaneously.

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Taylors, SC, United States of America

Carl C Hu