Monday, 18 May 2015

A huge changed has been occured at the Grid the way

Currently, large power plants generated most power and provided to consumers. Electric energy storage offers a double-way flow of power that makes some obvious advantages for support of the power grid. For example, storage is particularly useful for offsetting the intermittent nature of wind and solar photovoltaics, which don’t produce power on demand as a fossil fuel power plant does.

Having a battery behind the meter provides a great deal of flexibility in  energy using manage for an individual consumer. Consumers are allowed to cut their electric bills by reducing how much power they consume during peak hours when waste a high power costs, which is usual situation in many states such as California.

Houses with rooftop solar panels on the top and batteries can actually use energy from their solar systems during power outages and, with The right amount of storage, have sufficient power to last for days if the grid is out. And with enough storage, they can disconnect from the grid indefinitely – a development utilities fear.

Some states have net metering, programs in which utilities purchase the excess electricity from solar panels that’s fed into the grid. In combination with net metering, behind-the-meter storage creates the opportunity for customers to buy power from the grid when prices are low and then sell stored energy from batteries when prices are high. This practice, known as arbitrage, has led to concerns at utilities which have levied large additional charges for equipment installations in some places.

Commercial and industrial customers stand to benefit from behind-the-meter storage as well. They can reduce their usage during times of peak demand and cut so-called demand charges – fees for maximum power usage – that can dominate how much they pay for energy.

Custom battery packs





Monday, 27 April 2015

2016 BYD Tang: Plug-In Hybrid SUV Is First Of Four To Come

It's been more than six years since fabled investor Warren Buffet bought 10 percent of BYD Autos, one of the few independent Chinese automakers.
At that time, the company had big plans to become China's largest producer of plug-in electric vehicles--and then export them to the U.S.

While the Chinese market for plug-ins has developed more slowly than expected, BYD has persevered with a new range of plug-in hybrids.
It has been selling its compact Qin plug-in hybrid sedan for a year, and is now taking orders for its second model, the Tang plug-in hybrid compact SUV.
The BYD Tang retails for about 300,000 yuan (roughly $48,000 at today's exchange rate).
BYD Qin plug-in hybrid sedan, unveiled at Beijing International Automotive Exhibition, April 2012BYD Qin plug-in hybrid sedan, unveiled at Beijing International Automotive Exhibition, April 2012
And, according to a report by Bloomberg, more plug-in hybrid SUV models are on the way--including two this year alone, to be named after China's revered Song and Yuan dynasties.
A further SUV, the Ming, will follow at a later date, according to a presentation given by the company last week.
BYD was the first company in the world to launch a production plug-in hybrid; its F3DM in 2008 was two years ahead of the 2011 Chevrolet Volt.


Wednesday, 22 April 2015

Do not kill your battery! Electronic products Battery cold literacy

Today's electronic products no longer use the 5th battery to be replaced, the charge is brought more convenience and more serious cell phone addiction, but the correct way to use your battery it? The following article will reveal the dark side of your battery.

cold knowledge: new phone's battery charge in the end should be how long?
I am sure you have heard of such a legend: the first time to buy a new phone on charge must be charged 10 hours, so as to be expanded to the maximum capacity of the battery, the battery will be durable. Is it true?
Generally speaking, this view is held by parents' generation of people, that's them, a lot of old electronic products using a nickel-cadmium batterythat is characterized by "memory effect", that no long-term complete charge and discharge will allow the battery to leave a "habit" lead to a decline in the efficiency of the battery.
But today's electronic products already do not use nickel-cadmium type batteries, but all replaced by a lithium battery, lithium batteries, however, and no so-called "memory effect", with electronic products are now after the device is fully charged automatically cut off the power supply, So you dash for longer does not make sense.
So the answer to this question is that the new phone or, old phone or, full, please unplug it.
 cold knowledge II: battery run out before charging must take it?
Many people are used to the electronic products before charging the battery completely run out, in the off state began to charge, in fact, this is influenced by the nickel-cadmium battery memory effect.
For lithium batteries, there is another phenomenon called cell activity:a new lithium battery and can not play all the utility you want to use for some time after most of the lithium-ion activated in order to achieve the best results, and thorough discharge is the biggest killer inhibitory activity.
In general, the best power electronics products is 20% to 90%, so the phone at around 20% power to trouble charging it.
 cold knowledge Three: You can use the phone while charging it?
The problem is the party most likely to encounter a lot of phones, because the lack of electricity, often connected to the power supply after continued use, but it actually is a very dangerous move.
In playing the game, call these processes, the phone will have a serious fever, while charging the phone will also promote fever, when both simultaneously, it may cause the battery to overheat explosion, the explosion occurred once, maybe you would never the opportunity to use a mobile phone.
 summary
Although there are some very small daily problems, but if you pay attention, it will greatly shorten the battery life, which is why someone with a cell phone can also spend one day a year, six months before you have your cell phone hanging spank bottles.
Love is not only a mobile phone handset battery charge is responsible for your own life, oh.

Do you know the real reason for the lithium battery performance degradation it?

Li-ion battery has now been widely used in mobile devices, but the battery life is not long, 500 charging cycles will lose about 1/5 of capacity. In order to study the reasons for the lithium battery degradation, the US Pacific Northwest National Laboratory scientist using a powerful microscope to observe the success of the real-time status of the lithium battery charge and discharge.

The researchers found that when using the battery creates pressure and cause rupture electrode. In addition, for each charge and discharge cycle will leave traces of lithium electrode in addition to these "death" of lithium which can no longer play a role in the future of charging, and will cause a decline in battery capacity. The researchers also observed in the solid electrolyte interphase layer is formed on the electrode surface, which can "clog" the battery and affect its ability to charge.
Lithium who want to solve these problems, the use of alternative methods is one of the elements. In the future, magnesium, aluminum, or copper and other metals could become cheaper and stable alternative, however, the performance of these batteries is still not up to the level of lithium batteries.

Monday, 13 April 2015

Battery Tests Show Some Lithium-Ion Cells Last Over 5x Longer

Researcher Andreas Gutsch from the Karlsruhe Institute of Technology said at the PV Symposium in Germany recently that some lithium-ion cells working in storage systems experienced up to 30% capacity loss after 1,000 cycles, while some cells have a better capacity after 5,000 cycles. In other words, there can be quite a lot of variation in lithium-ion cell performance.

lithiumionbatteryger

Testing conditions did not allow him to reveal the names of cell manufacturers. The cells were not easy to obtain for testing and he could not disclose that specific information. However, his test results did reveal that cells from China that were tested had the performance that decreased most rapidly. Cells from Japan and Germany did the best, while ones from South Korea and the US were in the middle of the performance range.

One battery type that was specifically mentioned was the Tesla battery. This battery was found to last 400 cycles and was indicated to have the ability to power a car for about 200,000 kilometers (124,000 miles): 400 cycles multiplied by 500 km per full charge. That said, Elon Musk has stated that Tesla has a Model S in the lab with 500,000 miles (805,000 kilometers) on it, and without excess degradation. So, it seems the tests have been conducted very differently or something funky is going on.

Gutsch previously noted that some energy storage battery types might have safety issues, such as thermal runaway. According to his research, safety standards for some batteries have not been met.

He does believe batteries will eventually be a great way to store electricity, though.

All, or most of us lay people are on a learning curve when it comes considering how to evaluate the best batteries for consumer technology performance. To engineers, it may not be surprising at all that there could be such a range in cell performance. It may be fairly dismaying to lay persons to find this out, though we may notice that some of our consumer devices (like smartphones and other rechargeables) have poor to very poor battery lives, with variation being rather large.

Battery storage for a home or business is quite another matter.


Source:http://cleantechnica.com/2015/03/27/battery-storage-test-shows-lithium-ion-cells-last-5x-longer/

China's BYD ramps up 'leccycar battery production in challenge to Tesla

Warren Buffett-backed Chinese car manufacturer BYD is aiming to compete with Tesla Motors by tripling its production of batteries for electric cars over the next three years.

BYD will produce an additional six gigawatt-hours' worth of batteries per year over the next three years, said company spokesperson Matthew Jurjevich, adding that with the support of consumer demand these production increases could be continued beyond the three years of increase scheduled.

If this rate of production increase continues to 2020, BYD would be set up to challenge Tesla Motors' $5bn Gigafactory in Nevada, which is projected to achieve an annual production capacity of 35GWh when it begins operating in 2016.

Rumours of difficulties in the development of the Tesla Gigafactory have been refuted by CEO Elon Musk. The company is, however, downsizing its Chinese operations following a bungled incursion into the market which has left its distribution centres overstocked. Tesla does not currently produce battery cells, instead sourcing them from Panasonic.

Reuters cites GTM Research as estimating the electricity storage sector growing from a $128m market in 2014 to being worth $1.5bn in the US alone by 2019.

While BYD electric cars aren't luxury models like Tesla's, BYD may be at an advantage in regularly utilising Lithium Ferrophosphate (LiFePO4) batteries in their Energy Storage Systems. LiFePO4 is a Li-ion battery technology which offers a considerably longer cycle-life than the batteries Tesla uses.

In 2010, BYD came first in Bloomberg Businessweek's Top 100. Businessweek claimed that Warren Buffett, though “legendary for his dislike of tech investments”, was persuaded by Charlie Munger “to buy a 10 per cent stake in BYD for about $230m. That was in September 2008. Today Buffett's piece is worth nearly $2bn.”

BYD recently partnered with Uber, who are running 25 of BYD's e6 models around Chicago as part of a ride-sharing venture with Green Wheels.

Thursday, 9 April 2015

About the past era of lithium aluminum battery age will come up?

Chinese American scientists have developed a high-performance aluminum battery's first commercial application, its charge faster, last longer and very cheap, just one minute using this smart phone battery is fully charged. The new battery can replace the widely used but there is still insufficient lithium ion batteries and alkaline batteries. Research published in the April 6 issue of "Nature" magazine online edition.

Because aluminum battery has a low cost, easy to burn and do not have a high charge storage capacity, etc., for decades researchers have attempted to develop an economically viable to aluminum ion batteries, but has not been successful, where the key challenge is to find the right positive materials and electrolyte materials, so that the aluminum battery is constantly charging and discharging cycles can still produce an effective voltage.

The study's lead author, professor of chemistry at Stanford University Dai said: "People try a variety of cathode materials, but the effect is unsatisfactory we accidentally discovered a new graphite material, which has excellent performance, can be used as a positive electrode of the battery. "

According to the US Science Daily website reported April 6, and the cathode is comprised of graphite researchers in experiments by aluminum anode, coupled with the ionic liquid electrolyte, placed in a flexible polymer foil-wrapped software package in the manufacture of this battery. The research collaborators Gong Ming (phonetic) said: "The electrolyte is basically a liquid salt at room temperature state, therefore, the entire system is very safe."

Dai Hongjie said: "The newly developed aluminum rechargeable batteries safer than conventional lithium-ion batteries, lithium ion batteries may explode, in order to take preventive measures, United Airlines and Delta Air Lines recently forbid civil aircraft checked chunks Lithium batteries, aluminum battery will not explode. On the other hand, is currently equipped with a lithium-ion battery charging smartphones may take several hours, but the use of this aluminum battery for a fully charged cell phone just a minute. "

Aluminum ion battery developed at the University of domestic mobile phone charger available one hour four days

In addition, the new battery life is very long. Other laboratory developed aluminum battery can charge and discharge 100 times, usually lithium-ion battery charge and discharge up to only 1000, and the new aluminum battery without any loss in capacity after 7500 charge-discharge cycles later. The researchers said, "This is the first time the development of this fast, and after thousands of charge-discharge cycles 'torture' still safe and sound after the aluminum ion batteries."

Dai Hongjie said that another feature of the new battery is its soft figure, you can also make it bent its folded, therefore, has the potential for flexible electronic devices. In addition, the battery can replace alkaline batteries will pollute the environment, but also cheaper than aluminum lithium battery. "In addition to small electronic devices, such aluminum battery can be used for renewable energy storage within the grid Dai Hongjie explained:." Grid requires a long life and can quickly charge and discharge the battery, our aluminum battery is the perfect choice . "

However, the voltage of the battery to produce new aluminum lithium battery is only half of the traditional, Dai Hongjie hope can improve the performance of the cathode material, and ultimately improve the aluminum battery voltage and increase the energy density. .