Lithium Batteries with High-Capacity Current Collectors for High Specific Power

"Boundless' PowerCoreTM High-Power Multi-Functional Battery Panel (HPMFBP) offers unique and innovative solutions for high-power applications such as advanced missile defense systems and HEVs. Boundless' patented structural battery technology is based ondual-function carbon composite anodes. High specific power and high power density is achieved by the following means:¿ Battery active material is spread in very thin layers relative to the thickness of the bulk current collector, yielding low resistive losses and minimizing heat generation at high discharge rates.¿ Battery electrodes are constructed in a corrugated configuration and spread out within a large volume, forming cooling channels adjacent to heat sources.¿ Carbon composite electrodes are used for structural support as well as for energy storage, enabling high ratios of current collector to active material without excessive mass. The carbon composite is also highly thermally conductive and simplifiesthermal management.¿ Replacing the inert structure with a structural battery allows the battery mass to be discounted to account for structural utility, further enhancing effective specific power.Thermal imaging of lithium-ion cells done in Phase I demonstrated temperatures >90oC for a spiral design versus <28oC for a flat cell design, thus proving feasibility of this approach."