Thin-Film Thermal Charger Application

altNextreme Thermal Solutions (Durham, NC) and Infinite Power Solutions (Denver, CO) have developed a thermal charger with the ability to continuously recharge the IPS THINERGY ™ Micro-Energy Cell (MEC) using an eTEG thermoelectric power generator from Nextreme. The prototype thermal charger uses an array of 16 HV14 modules in power generation mode to provide the 4.1 volts of electricity needed to charge the MEC to a fully charged state in approximately 20 minutes. Four HV14 power generators can replace one AA battery. Nextreme’s eTEG™ HV14 has demonstrated output power levels of >16 mW at ΔT of 70°C and >45mW at T of 120°C. With modules measuring 1.8 mm x 1.5 mm, the eTEG HV14 has corresponding output power densities of ~ 0.6 and 1.6 W/cm². Nextreme’s eTEG devices generate electricity via the Seebeck Effect, where an electrical current is produced from a temperature gradient across the device.

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