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 Tech of the Week
Each week we feature special technologies. Take a moment to view the other Tech of the Week articles, you may find one that meets a present need.
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 Tech of the Week

Unique battery fast-charge technology


The Evgentech technology allows batteries of various chemistries and sizes to take in power at a much higher rate than existing methodologies, without causing the expected damage seen with conventional accelerated charging paradigms. Battery-related innovations have been great in recent years: devices that use batteries (including vehicles) have become more efficient in power use; new battery form factors and improved chemistries have resulted in larger capacities and longer operation. However, charging times have not similarly improved and have actually gotten longer with larger capacities. The Evgentech charging technology addresses this innovation gap by providing a fast-charging methodology that operates by creating the conditions necessary to allow the battery to charge substantially more quickly without damage. While applications broadly include the world of batteries, immediate applications are commercial (equipment an organization must buy in multiples to ensure adequate availability while units experience downtime when charging), military, and aviation applications. Other possible applications include regenerative braking (most batteries cannot absorb regenerative charges quickly enough, and the power is wasted), and utulity-scale batteries that charge from solar and wind installations.

Evgentech technology recharges batteries in about one-tenth the time of conventional methods.

The Evgentech technology recharges batteries in up to one-tenth the time of conventional methods by creating conditions within the battery that allow power input into the battery as fast as the battery can accept the charge. This “ecosystem” approach allows efficient fast charging while at the same time reducing heat formation, overvoltage and the attendant battery damage expected from fast charging methodologies.

Conventional fast charging (e.g., pulse charging) technology “pushes” a charge into a battery at a set rate, albeit using one or more sophisticated algorithms, regardless of the battery’s ability to absorb the charge. This results in wasted power, excess heat, and damage to the battery being recharged. Moreover, the inherent battery damage resulting from all known conventional fast charging methodologies limits their application.

Rather than relying on algorithms that create charging pulse and charging/discharging patterns that seek to reduce the inevitable damage that results from fast charging, the Evgentech charging technology creates the optimum conditions for battery fast charging. These conditions allow the necessary redox reaction kinetics to exist so that charging occurs not only faster, but more efficiently and with minimal side reactions (i.e., damage). The combination of circuit configuration, waveform, and battery positioning allow each battery to charge in its chemical “sweet spot.” This “ecosystem” approach to charging allows the battery to actively participate in the charging process — not merely be the passive recipient of charge. Evgentech’s team is aware of no potential other solutions based on a reconceptualization of the way power is input into batteries.

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