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Kato T.,Nissan Motor Co. | Mizutani R.,Toyota Motor Corporation | Matsumoto H.,ATSUMITEC Co. | Yamamoto K.,Division 5 Technology
2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013 | Year: 2013

This paper summarizes the trend of novel technologies used for electric vehicles (EV) and hybrid electric vehicles (HEV) based on the published papers and reports in order to predict the needs technologies for expanding EV and HEV market. At first, the relationship between energy demand situation and expanding trends of electric propulsion vehicles will be mentioned. Regarding traction motors, required performances and miniaturizing technologies by novel coil winding structures and increasing rotational speed, iron loss reduction technologies by the contrived core shapes, have been extracted and classified into the trends for each EV and HEV. In conclusion, miniaturizing technology was found to be one of the key issue of traction motor for electric propulsion vehicles. © 2013 IEEE.


Matsuda J.,Kyushu University | Yoshida K.,Nagoya University | Yoshida K.,Japan Fine Ceramics Center | Sasaki Y.,Japan Fine Ceramics Center | And 2 more authors.
Applied Physics Letters | Year: 2014

In situ transmission electron microscopy (TEM) was performed to observe the hydrogenation of Mg-Ni films in a hydrogen atmosphere of 80-100 Pa. An aberration-corrected environmental TEM with a differential pumping system allows us to reveal the Angstrom-scale structure of the films in the initial stage of hydrogenation: first, nucleation and growth of Mg2NiH4 crystals with a lattice spacing of 0.22 nm in an Mg-rich amorphous matrix of the film occurs within 20 s after the start of the high-resolution observation, then crystallization of MgH2 with a smaller spacing of 0.15 nm happens after approximately 1 min. Our in situ TEM method is also applicable to the analysis of other hydrogen-related materials. © 2014 AIP Publishing LLC.


Patent
Atsumitec Co. and Honda Corporation | Date: 2012-06-21

In the present invention, an operation knob is provided with a knob outer section that forms an outer shell, and a knob inner section into which one edge of a lever section is inserted. The knob inner section has a claw section that allows insertion when the lever section is inserted, and once the lever section has been inserted, hooks the lever section towards the inner side of the knob inner section. A groove section is formed in the lever section and extends in a direction perpendicular to the axis direction of the lever section. The knob outer section is made up of two parts, which are an outer casing and a knob cover. The knob cover is provided with protruding sections, which protrude towards the outer casing and fit into the groove section when the lever section is attached to the knob inner section.


Patent
Atsumitec Co. | Date: 2014-03-07

A power generator


Ogawa S.,Nagoya University | Uchiyama N.,ATSUMITEC Co. | Fujimoto T.,Nagoya University | Kanai T.,ATSUMITEC Co. | And 2 more authors.
Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals | Year: 2015

We introduce the spectroscopic investigation of the nano-composite materials consisted of Mg and Pd. Mg is most promising material for the application of the hydrogen storage because of the high gravimetric hydrogen storage capacity up to 7.6 mass%. In spite of the advantage of the hydrogen storage capacity, the practical use of Mg has not been established due to the slow hydro-/dehydrogenation reactions and the high temperature required to store and release the hydrogen. Nano-sized Mg such as Mg nanoparticle is expected to store the hydrogen rapidly because of the high specific surface area of the nanoparticle. Moreover, addition of Pd decreases the temperature for the hydrogen storage of Mg because of the catalytic effect for the dissociation reaction of hydrogen molecules. We have fabricated the nanoparticles composed of the both Mg and Pd by the gas evaporation method using He gas. These nanoparticles can store the hydrogen at the room temperature. After the storage of the hydrogen, the release of the hydrogen has not been observed up to 100°C. The analyses of the X-ray absorption fine structure (XAFS) have revealed that the irreversible change of the chemical state during the hydrogen storage causes the inactivation of the surface of nanoparticles and inhibits the dehydrogenation reaction of the MgH2. © 2015 The Japan Institute of Metals and Materials.

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