Self-sufficiency, making electricity from both body temperature and light, the world's first hybrid power generation device

In order to realize self-sufficiency of electric power, we call "energy and harvesting technology" a technology to harvest energy from the surrounding environment and convert it into electricity, but "CEATEC JAPAN 2011At the venue's Fujitsu booth "You can produce electricity from both heat and light"The world's first hybrid electric power generation device called the reference was exhibited.

Development of a hybrid power generation device that produces power from both light and heat: Fujitsu

"Energy · Harvesting Technology" section in the Fujitsu booth.


Prototypes of power generation devices etc are actually exhibited in reference.


What is "energy · harvesting technology" in the first place is what is said to be "environmental power generation" by technology which harvests small energy around ourselves and convert it into electricity. As self-sufficiency of electric power becomes possible, maintenance such as wiring and battery replacement becomes unnecessary, and environmentally friendly sensor network can be realized. Fujitsu is working on power generation and storage technology important for "energy · harvesting technology".


This is "prototype of all solid-state secondary battery" and "prototype of hybrid power generation device".


In the past "energy / harvesting technology", only a small amount of power could be obtained because only one environment such as light, vibration, heat, radio wave could be used, but "hybrid type power generation device" By responding to the environment more power can be generated.


Also, in conventional secondary batteries, it was unsuitable as an energy management (or simply electric storage) element for energy and harvesting due to environmental temperature tolerance and safety issues, but in "new solid-state secondary batteries" Storage is now possible.


That "it is possible to produce electricity from both heat and light" means that it can generate electricity with body temperature and indoor light, so it is assumed to be used in the medical field. Specifically, it is possible to think of a method of using such as always checking the state of the body by attaching the device to the skin of the patient, and receiving emergency service automatically in case of emergency. Moreover, it is possible to operate the device at low power for a long time by "using light with a lot of power generation during daytime and generating at body temperature at night".


"If electricity can be generated by light and body temperature, I think that it is very convenient if applied to mobile phones", but unfortunately the electricity that can be generated at present is very weak, so it can not be like charging the battery . It was likely to be realized in a very far future.