Nissan desenvolve um sistema de recarga solar com baterias

[ruimegas]

Nissan desenvolve um sistema de recarga solar com baterias usadas de LEAF?s. (Nissan desarrolla un sistema de recarga solar con baterías usadas del Leaf)

"El fabricante japonés de automóviles Nissan y 4R Energy Corporation han desarrollado de forma conjunta un dispositivo de recarga para vehículos eléctricos que combina un sistema de generación de energía solar con unas baterías de litio de alta capacidad, provenientes de los vehículos de la marca japonesa, dándoles un segundo uso.


Nissan está trabajando en qué hacer con las baterías de sus vehículos eléctricos una vez que han alcanzado el final de su vida útil para tareas de automoción. Cuando llega este punto, las baterías aún tienen un gran porcentaje de capacidad de carga. Nissan estima que es probable que la batería retenga el 80% de su capacidad original, y su uso sea viable en otros mercados como el almacenamiento energético.

Con este nuevo sistema de carga se genera la electricidad a través de los paneles solares instalados en las instalaciones de la empresa y se almacenará en baterías de ión de litio, las cuales son el equivalente a cuatro unidades del Nissan Leaf. Así, la corporación ha instalado siete puntos de recarga, entre los que se encuentran tres de carga rápida y cuatros estándar y señaló que la electricidad total que puede ser generada y almacenada podría recargar aproximadamente 1.800 unidades del Nissan Leaf al año.




El sistema consta de:

* solar power generating system with 40 kW maximum output (Solar Frontier);
* Power conditioner, rated power output: 40 kW (10 kW×4) (Sanyo Denki Co., Ltd.);
* 95 kWh storage battery (AESC);
* Grid management unit with rated power output of 200 kW (Sanyo Denki Co., Ltd.);
* 3 quick chargers (50 kW); and
* 4 regular chargers (3.3 kW).

Nissan ha subrayado que este nuevo dispositivo permite recargar los vehículos eléctricos a través de un sistema completo de energías renovables, lo que deriva en que este tipo de coches tenga unas emisiones cero de dióxido de carbono (CO2) también al ser cargado.

"

Em: http://www.forococheselectricos.com/201 ... carga.html

[ruimegas]

"A NEW, GREEN, LEAF OF LIFE FOR NISSAN EV BATTERIES

Innovative system for storing excess energy from solar panels by using end-of-life Nissan LEAF batteries
Prototype solar power generation system installed at Nissan's Global HQ
Total energy generated and stored equivalent to fully charging 1,800 LEAFs per year
When a conventional car reaches the end of its life through accident damage or just old age, major components are usually crushed and melted down for scrap.

The Nissan LEAF's battery is expected to be far too valuable for this fate however, and Nissan is already planning how to give the batteries a ‘second life' in the power generation industry.

Besides reusing the battery, the new use for it will allow excess power from renewable sources such as solar and wind generation to be stored and then released at peak times, reducing the need for conventional power stations to be kept on standby.

A fully charged battery in a LEAF holds enough energy to power a three-bedroom home for around three days (8kW/day). It has massive potential to store electricity generated by solar and then release it when the sun isn't shining, or give the ability to use wind power even when there is no wind.

"The Nissan LEAF has only just been launched, but we have to think now about how we will dispose of the car when it comes to the end of its life," said Jerry Hardcastle, Vice President, Vehicle Design & Development, Nissan Technical Centre Europe. "Although the LEAF is designed to last as long as any conventional car, some batteries will become available from accident-damaged cars sooner and we must manage the use of the parts now."

While a used engine has limited scope to be reused, the battery second life usage is expected to give them - and therefore the LEAF - a significant resale value.

The first large-scale demonstration of renewable generation and battery storage using LEAF batteries has been built at Nissan's global headquarters. A joint venture established by Nissan and Sumitomo Corporation, called 4R Energy, has started tests using solar panels and second-life lithium ion batteries previously used in Nissan LEAFs.

Electricity for the new storage system is generated through solar cells (photovoltaic panels) installed at Nissan's offices, and is stored in the lithium-ion batteries. The power is then used to charge electric vehicles.

With seven charging stations (three quick charge, four normal charge) connected to the solar grid at Nissan's HQ, the total electricity that can be generated and stored is the equivalent to fully charging approximately 1,800 Nissan LEAFs annually.

That's equivalent to an annual reduction of 15.4 tons of CO2 emissions and will enable electric vehicles to be charged through a completely renewable energy source. The electricity can also be supplied to EVs regardless of the time of day or weather.

"Nissan LEAF is already zero emission from a vehicle point of view," says Hideaki Watanabe, Corporate Vice President for Global Zero Emission at Nissan. "Now, in order to maximise that potential, if we utilise the renewable energy on the electriciy side, it would really be zero emisison."

Demonstration test outline
Solar cell: Maximum power output: 40kW (Solar Frontier)
Power conditioner: Rated power output: 40kW (10kW×4) (Sanyo Denki Co., Ltd.)

Storage battery capacity: 96kWh (Automotive Energy Supply Corporation)
Grid management unit: Rated power output: 200kW (Sanyo Denki Co., Ltd.)

EV charging equipment: Quick charger: 3 (50kW×3) Regular charger:4 (3.3kW×14)"

Em: http://www.newsroom.nissan-europe.com/u ... iaid=82212

[ruimegas]

"YOKOHAMA, Japan —
Japanese automaker Nissan is testing a super-green way to recharge its Leaf electric vehicle using solar power, part of a broader drive to improve electricity storage systems.
Nissan’s Leaf went on sale late last year, but the automaker is looking ahead to about five years time when aging Leaf vehicles may offer alternative business opportunities in using their lithium-ion batteries as a storage place for electricity.
Nissan acknowledges that, once the Leaf catches on, a flood of used batteries could result as the life span of a battery is longer than an electric vehicle’s.
Electricity generation and storage are drawing attention in Japan after the March 11 earthquake and tsunami caused massive blackouts in the country’s northeast. A nuclear power plant that went into meltdown, Fukushima Daiichi, after backup generators were destroyed by the tsunami, is also renewing fears about a power crunch.
In the new charging system, demonstrated to reporters Monday, electricity is generated through 488 solar cells installed on the roof of the Nissan headquarters building in Yokohama, southwest of Tokyo.
Four batteries from the Leaf had been placed in a box in a cellar-like part of the building, and store the electricity generated from the solar cells, which is enough to fully charge 1,800 Leaf vehicles a year, according to Nissan.
Although interest is growing in renewable energy such as solar and wind power, a major challenge is the storage of electricity, which remains expensive without a breakthrough in battery technology.
Such interest is likely to keep growing in Japan because of fears about the safety of nuclear power. The Hamaoka nuclear plant is being shut down because of such concerns, and more may follow.
Other Japanese automakers, such as Toyota Motor Corp and Honda Motor Co, are working on similar projects, such as linking hybrids with solar-equipped homes as part of energy-efficient communities called “smart grids.”
Electric vehicles produce no pollution or global-warming gases but need electricity, whose production mostly relies on polluting oil or gas.
Even after a Leaf is ready to be scrapped, its battery is likely to have 80% of its capacity. On the plus side, the Leaf with its high-capacity battery can store the equivalent of two days of household electricity use, Nissan said.
“What’s important for Nissan is to show solutions through EVs, step by step,” said Corporate Vice President Hideaki Watanabe.
A joint venture with Sumitomo Corp called 4R Energy Corp plans to offer eletricity storage systems like the one at Nissan headquarters for business and public facilities as a commercial product by 2016.
Nissan also hopes to start selling such storage systems for regular homes by the fiscal year starting in April 2012. It will carry out field tests from December, 4R Energy President Takashi Sakagami said."

Em: http://steve-crane.blogspot.com/2011/07 ... rging.html