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Battery Japan: View from Nissan, Honda and Toyota (part 4)

Future goals for battery development include a reduction in cost and improvement in performance (input, output, compact and light weight). Toyota believes that NI-MH batteries have a distinct cost advantage, but lithium ion have a much greater volume advantage for application in EVs and PHVs. Accordingly, they have launched the Prius with a NI-MH battery and will launch their next PHV, at the end of the year, with a lithium ion battery.

Battery Japan: View from Nissan, Honda and Toyota (part 3)

Nissan outlined a few differences between their HEV and EV batteries:

  • Capacity is 33 Ah (EV) versus 4 Ah (HEV)
  • Anode material is graphite (EV) and hard carbon (HEV)
  • Total energy is 24 kWh (EV) versus 1.4 kWh (HEV)

Nissan cited an original blended compound cathode (LMO based) as well as laminated type cell structures for giving a good balance of long life, low cost and reliability, however, they did acknowledge that continued challenges exist in adapting vehicle and battery performance optimisations for real-world driving habits and conditions.

Battery Japan: View from Nissan, Honda and Toyota (part 2)

2011 Battery Japan, the 2nd International Rechargeable Battery Expo

Nissan: New Nissan electric powered vehicles and battery technologies

Takeshi Miyamoto of Nissan introduced several electrification concepts put to use in the new Nissan Leaf. These included an innovative brake by wire system, charger, inverter, motor, reduction gear, battery pack and electrical steering and air conditioning. Among the technologies applied to the new Leaf were a specially designed platform, which included features such as a battery mounted frame (separate from the vehicle’s external frame) multi-load paths, and frame-integrated inverter mounts - all providing enhanced safety and collision support.

Battery Japan: View from Nissan, Honda and Toyota (part 1)

Honda: Vehicle electrification technologies and the challenges of batteries

Hirohisa Ogawa of Honda Research and Development sees conventional power sources and gasoline hybrids remaining dominant until around 2016, with global sales at around 60 million units. However, it is expected that market share for these two categories will drop considerably starting around 2030 as new regulations and competing technologies come into effect. By 2050, Honda expects market share of conventional power source and gasoline hybrids to drop to under 5 million.

Honda sees the largest innovation potential over time for the electrification of vehicles, especially with hybrids, followed by innovations with clean diesel. Gasoline internal combustion engines (ICEs) were viewed as having a low technological innovation over time.

China's Hydropower Push in the 12th Five-Year Program period (2011-2015) (part 1)

Three Gorges hydro project

But the investment of hydropower projects are mostly ceased for several reasons, such as the unsettled debate on the position of water power. The aftereffect of no progress in hydropower (hydroelectric power) in China results in the partial reasons for the shortage of electricty and severe drought these years.

But Chinese hydroelectric power generation has reached a turning point now. In Beijing, China Electricity Council issued the electric power industry research report for the 12th Five-year Plan. Wei Zhaofeng, vice chairman of China Electricity Council, said that the development of hydroelectric power (hydropower) has become a priority, and that large and medium-sized hydropower projects will be granted approval.

These developments will be helpful to raise the share of non-fossil energy (alternative power) in Chinese large energy consumption.

China to accelerate building new hydropower projects in the 12th Five-Year Program period (2011-2015) (part 2)

Construction of new hydropower projects was ceased in China in the latter of the past five years (11th Five-Year Program period, 2006-2010) due to the unsettled debate on the position of water power. Meanwhile, new projects of reservoirs were ceased for a long time. The severe drought in China these years also stimulates the central government.

hydro-power in China

China will invest much money to develop its water power generation during the 12th Five-Year Program period (2011-2015), meanwhile further enhancing its wind energy, solar energy, and biomass power


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