Brændselscelle forsyner smartphones

Brændselscelle forsyner smartphones

ROHM lancerede på Electronica 2012 ultrakompakt og let hydrogen brændselscelle, der kan bruges til forsyning f.eks. smartphones og lignende (in english).

ROHM, together with Kyoto-based Aquafairy Corp. and Kyoto University, have co-developed compact, lightweight, high-power hydrogen fuel cells designed to power smartphones and other portable devices.

These fuel cells overcome the drawbacks of dry cells, lithium-ion cells, and direct methanol fuel cells, significantly reducing weight and increasing output power while providing a higher level of safety, making it possible to provide power in places where AC power is not available or cannot be used.

Fuel cells can be made smaller, lighter, and more efficient than conventional storage and rechargeable cells, and thus are expected to drive expansion into new markets and applications. In fact, there is already extensive use of fuel cells using methanol and hydrogen.

However, methanol fuel cells have several disadvantages that prevent widespread acceptance. Unlike hydrogen fuel cells, it is difficult to increase power output. And hydrogen fuel cells require the use of cylinders, making them harder to handle and hinder efforts towards greater miniaturization.

ROHM, together with Aquafairy, has recently succeeded in solidifying calcium hydride in a sheet configuration using proprietary technologies, generating approximately 4.5 liters of hydrogen from a sheet less than 3cc in volume (measuring 38 x 38 x 2mm), providing a power output of 5Whr.

The hydrogen fuel cells are compact and can operate at ambient temperatures, making them suitable for use in smartphone chargers, tablet PCs, as power sources outdoors and in remote areas, and in emergency backup power supplies. In addition, they emit no carbon dioxide or hazardous gases and can be disposed of as general waste.

ROHM, Aquafairy, and Kyoto University will continue to work on assessing reliability and making further improvements, with production targeted for April 2013.

In addition to expanding its lineup of hydrogen fuel cells for smartphone chargers, ROHM and Aquafairy, in collaboration with Kinkei System Corp., are also developing fuel cells for powering seismometers in remote areas that prevent the use of traditional power supplies. Compared with conventional lead batteries, the cells reduce weight by 1/4 with same capacity, making it possible to provide 400Whr from a device that weighs only 3kg.
www.rohm.com/eu

29/11 2012
  • RECOM powerdesigns integreres nu i CELUS designplatformen

    RECOM powerdesigns integreres nu i CELUS designplatformen

    power ›En række af RECOM's powerdesigns bliver nu en del af CELUS designplatformen, hvor de indgår i 37 af CELUS's såkaldte CUBO's, der kan beskrives som digitale datablade (in english)
  • Ultrakompakt 600W AC/DC-strømforsyning

    Ultrakompakt 600W AC/DC-strømforsyning

    power ›Vox Power har udvidet sin EIRE-familie af single-output AC/DC-strømforsyninger med EIRE600, der er kompakt 600 W-strømforsyning, som måler blot 5 × 3 tommer og har en ekstremt lav profil på 1,1 tommer (in english).
  • 3,300 V SiC MOSFET-modul til industrielt udstyr

    3,300 V SiC MOSFET-modul til industrielt udstyr

    power ›Toshiba lancerer ny 3,300 V SiC MOSFET-modul til industrielt udstyr, der kan hånterere høje peak-strømme, hvilket er med til at forøge systempålideligheden.
  • Navitas og NVIDIA samarbejder om 800 V til 12 V power-delivery board

    Navitas og NVIDIA samarbejder om 800 V til 12 V power-delivery board

    power ›Navitas og NVIDIA udvikler 24 kW power-delivery board, der i ét trin kan konvertere 800 VDC direkte til 12 VDC og dermed eliminere 50 V IBC powertrinnet, hvilket booster systemeffektiviteten og reducerer boardstørrelsen (in english).
  • Rohde & Schwarz afholder power-seminarer

    Rohde & Schwarz afholder power-seminarer

    t-og-m ›Rohde & Schwarz afholder henholdsvis den 3. november (Aalborg) og 4. november (Sønderborg) heldagsseminarer, der fokuserer på forskellige testaspekter med relation til powerelektronik.
  • Microchip og Navitas samarbejder om 800V referencedesign

    Microchip og Navitas samarbejder om 800V referencedesign

    power ›Microchip og Navitas udvikler 800V-til-6V referencedesign, der kombinerer digital powerkontrol og hardwarebaseret sikkerhed, der kan accelerere udviklingen af højeffektive OCP (Open Compute Project) rack power applikationer.
  • Lavspændings GaN FETs til AI datacentre og robotløsninger

    Lavspændings GaN FETs til AI datacentre og robotløsninger

    aktive-komponenter-og-embedded-sw ›Renesas udvider porteføljen af GaN-komponenter med første 100V E-mode GaN, der bl.a. vil være oplagt at bruge i datacentre og forskellige typer af robotter (in english).
  • 650V GaN med dobbeltsidet køling

    650V GaN med dobbeltsidet køling

    power ›Med sigte på brug i bl.a. AI datacentre præsenterer Renesas industriens første 650V GaN i en 8x8 mm pakning med dobbeltsidet køling (in english).