Friday, 9 September 2016

The Tesla And Solar City Merger

Elon Musk, CEO of Tesla [NASDAQ:TSLA], plans to buy his cousin’s company, Solar City [NASDAQ:SCTY]. That has generated a lot of head-scratching in financial circles about how it will work out. Some facts commonly cited: Tesla is the most successful and biggest electric car company the world has ever seen. Solar City is America’s biggest residential solar company. Both companies lose money. Both are deeply dependent on billions of dollars in taxpayer subsidies, and both are at the epicenter of dreams to ‘green’ the highways and the grid.

Strip away debate about operational synergies and the sustainability of subsidies and you find a single technological article-of-faith animating believers in the companies’ conjoined vision: the idea that fantastically better batteries are in the imminent future. The battery pack is by far the most expensive component in a Tesla. In a conventional car, there is no equivalent component so expensive and dominant. Fantastically better batteries are key to a future in which electric vehicles (EVs) can make a serious dent in displacing oil in transportation systems.

Similarly, the utopian vision of distributed rooftop solar is fundamentally dependent on the belief that fantastically better and cheaper batteries will soon be available to do the obvious: keep the lights, TVs and PCs lit when the sun goes down in order to dispense with the ‘old’ utility grid wherein 70 percent of the electrons derive from burning shale gas and coal. Batteries — far better than anything that exists today — are vital if rooftop solar is to make a serious dent in displacing hydrocarbons and grids used in today’s electrical systems.

Thursday, 8 September 2016

Residential Battery Storage Not Yet

Australian homeowners may be flocking to energy storage in droves. But one of the country’s biggest engineering consultancies doesn’t see the financial sense in it.

Victoria-based Aurecon, which has operations across Africa, Asia, Australasia and the Middle East, and which has been associated with major renewable energy projects such as the Kogan Creek Solar Boost plant, says the financial impact of adding batteries to residential PV is “negative."

“Aurecon has modeled multiple scenarios with a Tesla Powerwall lithium-ion battery coupled with a 4-kilowatt rooftop PV system,” said Victor Young, the company’s market director for energy, oil and gas. “Adding batteries increases the cost of power even in the most favorable circumstance of a zero feed-in tariff from the network provider.”

As it happens, the Powerwall might not be the best battery on the Australian market, on a cost per total warranted kilowatt-hours basis. That honor currently goes to the Redflow ZCell zinc-bromide residential flow battery, according to SolarQuotes.

However, said Young: “The advertised higher cost of current-generation flow batteries does not encourage us to expect that the return on investment for this type of battery would be better.”

This article is comes from

LiFePo4 Batteries Will Enhance Energy Density

Recently, new energy vehicle power battery materials Summit held in Hefei, Huazhong University of Science and Technology [microblogging] Dean of Materials Science and Engineering, made a speech and said that Huang Yunhui, lithium iron phosphate and lithium-rich nanotechnology and application of technical and other means which will greatly enhance the practical energy density, lithium iron phosphate and implementation costs 2 yuan / watts no problem. Undoubtedly, this view if provoked uproar uniform gathered people in the industry's attention.

Huang Yunhui keynote address at the forum, said, currently made of lifePo4 batteries is about 100Wh / kg. Now to develop reach 250,260Wh / kg the next generation, the next step it will have an energy density of more than 300Wh / kg. To achieve such high specific energy of lithium iron phosphate batteries, on the one hand to consider the issue from the material itself, on the other hand, should be considered from the technical preparation of the battery.

Materials Science and Materials Engineering Dean Huazhong University of Science Huang Yunhui, said lithium iron phosphate lithium enriched by nanotechnology and other means and technical applications, which will greatly enhance the practical energy density, lithium iron phosphate and implement two yuan / watt the following costs when there is no problem.

Huang Yunhui said lifePo4 batteries system is currently made about 100Wh / kg. Now we want to develop reach 250,260Wh / kg the next generation, the next step it will have an energy density of more than 300Wh / kg. To achieve such high specific energy of lithium iron phosphate batteries, on the one hand to consider the issue from the material itself, on the other hand, should be considered from the technical preparation of the battery.

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Power Battery Safety: PACK and BMS Is Sticking Point

Benefit from the domestic policies of new energy vehicles and power lifePo4 batteries industry's strong support, in 2015 the new energy automobile production and sales surge, battery power shortage, dividend policy to benefit the whole industry chain. Industry insiders estimate that 2016 will usher in the first year of battery development. Battery long-term trend is no doubt, but safety is the primary criterion for consumer choice of products. Recently the Ministry of Industry "halt" Three lithium battery, a series of pure electric VW Golf 5561 due to "battery management system problems," recalls other incidents occurred, once again sparked public concern about the safety performance of the battery.

For the safety of the battery, in addition to battery materials technology road dispute, the industry generally believe that the role PACK battery and BMS in safeguarding security irreplaceable. Power Battery PACK product consists of three parts, namely the battery pack, BMS and holder shell (covering thermal management, structural design, high pressure control, security management, etc.). Wherein, BMS is known as electric vehicle power battery system "brain", and motive power batteries, vehicle control system together constitute the three core technology of electric vehicles.

No battery management battery pack is a bomb. BMS, ie, the battery management system is the core power battery pack, balanced load power, service life, safety, etc., are required BMS to control and optimization in the new energy automotive industry chain, industry value BMS is very important. Public information, BMS prevent over charge, avoid over discharge, temperature control and maintain the battery pack voltage and temperature balance, remaining battery capacity and predict the remaining mileage and other features. Meanwhile, BMS also has real-time monitoring and adjustment of the battery state management capacity, ability to work synchronized with a plurality of parallel subsystems. Through BMS can accurately measure the condition of the battery pack for solar powered portable generator, the battery will not overcharge and discharge protection, balancing a battery pack each battery charge, as well as analysis and calculation The battery pack and convert endurance understandable information to ensure battery safe operation.

The power of storage battery pack and battery management system was listed as key research tasks, "BMS charging infrastructure protection needs for the response rate of 100%" is listed as one of the operational safety ,and technical aspects of interconnection of electric vehicle infrastructure assessment indicators. Although BMS is very important for electric cars, but because of the relatively low proportion of the cost of the vehicle, the vehicle for a long time without the attention of enterprises, the lack of design and production experience,portable solar power generator  product BMS should do fine and stronger domestic business journey in the field of power battery BMS is still a long way to go, but because of the sudden outbreak of new energy automobile production and sales, the rapid expansion of downstream applications market is not growing enough to BMS industry time.Until 2020 years, the market of vehicle battery power will reach 120 billion yuan. Wherein, BMS system used by passenger cars account for about 10% -16%, commercial vehicles accounted for about 3% -5%, when the domestic electric vehicle market will reach 17 billion yuan BMS.

Solar Car Far Away From Us ?

How Solar Car Work?

Solar vehicle is solar energy into electricity to drive the car.The whole car like a big portable solar power generator. GaAs thin film solar battery technology conversion rate of 31.6%, this is the world's highest level, which also made a solar car provided technical backing. Gallium arsenide thin film solar cell technology will continue to improve the conversion rate. According to reports, in good sunlight conditions where annual solar energy can reach tens of thousands of kilometers; and in poor sunlight conditions where the amount of sun throughout the year to be driven about 20,000 kilometers.

Sun a Few Hours Is Enough?

Solar car appeared to be mainly rely on natural sunlight to provide energy, if a sunny day, don't worry about lack of energy. In SolarA computing models, vehicle weight of 1.2 tons and a maximum of 7.5 m2 body surface area stretched after laying; sunny day in the light for 5-6 hours, can generate approximately 8-10 degrees.

No Sunshine How To Work?

When solar power is insufficient, you can still take advantage of charging pile charged. In addition, under conditions of sunshine, the solar car will side with while charging by storage lifePo4 batteries pack, continue to add capacity, increase mileage, maximum mileage up to 350 kilometers, an increase of 10% -15% higher than conventional electric vehicles.

Intelligent management system relies on large data analysis and calculation - "Solar radiation cloud computing" to provide information. In such a "cloud computing", supported by mobile phones and dashboard will inform the user how many days in charge, in addition to the vehicle can be obtained in the course of its own energy through solar energy generator, so if there is no rain for a long time, in theory, can not enable legacy electric vehicle charging.

You Can Buy in Three Years?

Electric cars many years ago as a "future technology", to be honest, it can not be considered to achieve the degree of popularity. Easy of use, safety of the vehicle, are the focus of consumer concerns. At more realistic plug-in hybrid car was started, solar car looks more distant, more like the next achievable "sci-fi future" because of the cost of solar cars from the perspective of consumers and positioning considerations, the first solar car price is not low.

In addition, with the increasingly widespread application of portable solar power generator storage technology, not just the car, from the satellite has been applied to the spacecraft altitude long-endurance unmanned aerial vehicles, as well as common clothing, backpacks, electronics, and mobile devices such as the need for local power as long as there is sun shadow Hina, the mass production and use of such thin-film solar chip assembly will also have to reduce costs.

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Sunday, 22 November 2015

Vibration power: can generate power any where, will become the IoT ace

Small power plants, "only a few centimeters square, press the button and small vibration force during operation of the machine can be converted to electricity, to achieve energy self-sufficiency of things.

"IoT (Internet of Things)," there is a major weakness, and that is power.

Although the sensor can be set up in all places of the world, via the Internet to gather information, but if there is no electricity to start the machine, everything is on paper. Connect wires for all sensors is not realistic, its built-in battery will lead to rising costs.

The technology is expected to solve this problem is to "vibration generation." This technology can be longitudinal shaking car and train travel occurs on a regular basis of the vibration motor of air-conditioning equipment, etc. to convert into energy. In Japan, the vibration power generation industry groups Affairs Bureau, while Keiji Takeuchi also NTT Data Business Institute senior manager noted that "in addition to the general impression of the vibration, as well as methods using human pressing or pedaling forces."

Previous generation efficiency of this technique is very low, but now the "broadband" and other improvements to break this bottleneck. Various types of rock can be efficiently converted into electricity. If the popularity of this technology, "small power" will appear in the world, play a supporting role for IoT will achieve energy self-sufficiency.

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Monday, 10 August 2015

Anesco and OXIS to Release Lithium Sulfur Battery Storage by 2016

National energy efficiency solutions company, Anesco is now working with the award-winning battery technology company, OXIS Energy, in order to advance the growing renewables market in the UK.

The collaboration will demonstrate the outstanding strengths of OXIS Lithium Sulfur technology and calls on Anesco’s expertise as a leader in the field of battery storage for commercial and residential renewable installations. The new battery storage units will be available for installation from 2016.

Developed in the UK, OXIS’ Lithium Sulfur technology offers many advantages, including enhanced safety and reliability, improved environmental impact and ease of install as it is the lightest battery technology available.

Adrian Pike, Anesco CEO, said “We’re delighted to be working with OXIS. The team has developed this innovative technology right here in the UK and we believe it has fantastic potential. As a company, we are always focused on bringing the latest technologies and methods of best practice to our customers and continue to be first to introduce and model how such innovations can work.”

He added: “Storing energy and alleviating the strain placed on the grid, particularly at peak times, is a critical part of creating an electricity network that will support the needs of customers - both homeowners and businesses - as we decarbonise the UK electricity network. The design of effective storage solutions supports the growth in new technologies, such as renewables, by providing the flexibility needed to be able to match generation to supply.”

According to Huw Hampson-Jones, CEO of OXIS, “The development of effective energy storage solutions remains a key driver in achieving grid parity. As the OXIS technology becomes commercially available, it will contribute significantly to grid parity of renewable installations such as solar PV and is a major shift in how energy is produced and consumed, as it reduces CO2 emissions whilst reducing electricity bills at the same time."

He added: “Storage systems using lithium ion technology, such as the much publicised Tesla Powerwall, are limited by a technology that only achieves small incremental improvements each year.  Such manufacturers will want to improve performance, safety and cost of their products, so we expect that they will also switch to OXIS’s technology in the next few years.”

This project complements the increasing number of customers adopting the revolutionary Lithium Sulfur technology – including Electric Vehicles, Defence and Marine applications.

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