dell battery tips

According to foreign reports, Axiom Capital executive director and senior equity research analyst Gordon - Johnson that the world is facing solar battery panels capacity is serious excess , this may lead to solar panels and photovoltaic companies stock price fell.

Johnson pointed out to the end of 2011, global production capacity of solar battery panels from 2010 to about 40 GW (gigawatt) increased to 61 GW up and down. On the other hand, even the most optimistic estimates, only 20 GW of demand this year, Johnson says.

Therefore, he predicted the profitability of the PV sector will drop substantially, recommended investors sell shares of solar energy. He told CNBC: “We are in a structural oversupply in the market, the price is still much to fall, and we think this will put pressure on corporate profits, the PV, they will have a downward revision in the second quarter results . ”

Although prices have dropped, Johnson does not think that demand will rise. He said it was because of the lack of flexibility of the industry’s needs in the short term will not change. Solar technology is a long-term investment, investors will be waiting for prices to be reduced to a minimum and stabilized only after the investment money to come.

Although the nuclear crisis in Japan raise everyone’s optimism for clean energy, solar energy demand would not be a raise, said Johnson case. Because nuclear power is baseload power, can provide continuous low marginal cost of energy, while solar power is the peak load, intermittent electricity is provided, and a higher marginal cost.

Johnson said: “I think this is a great misunderstanding of the investment community. Can not use solar energy to replace nuclear power, you can not use intermittent power to replace baseload power, understand the utility of any such person will tell you.

Baltimore gas electricity supplier Constellation Energy recently announced it would invest Astrum Solar company, the amount of investment was not disclosed. Which will provide for the construction of Baltimore’s public value of about U.S. $ 1 million solar battery panels.

Astrum as the East Coast’s largest provider of residential solar battery panels, one will be installed this year, about 2,000 residential solar systems. Each household, the average installation price of solar systems panels for the $ 30,000 each, could generate 10KW.

Home solar battery panels can help reduce peak electricity grid pressure, such as using air conditioning and charging for electric vehicles. This is to reduce the burden on the local network part of the plan.

Rental and maintenance of solar panels to make solar energy companies highly profitable. Google recently invested $ 280 million to the residential solar panel suppliers SolarCity. Largest supplier of solar panels SunRun company also won a General Electric’s “ecomagination” challenge, to get an unknown number of investments.

Burke to a study by the University of California, installed the solar battery panels of the housing prices an average of 17,000 dollars.

Sanyo “eneloop” rechargeable batteries new versions, “Pro” version of advertised capacity of greater power for flash and other big occasions, SANYO press release issued earlier that with “XX” version is the same, the capacity of at least 2400mAh, called the 1900mAh battery than the general version of the 25% higher, on July 21 this year in Japan.

 ”Plus” version is advertised safe, low temperature, suitable for children to use toys and other situations, with the thermistor in the battery (PTC Thermistors), causing the battery to prevent improper use of temperature, is expected this year in Japan on December 1 .

 There were also released previously only heard of the “Qi” wireless charger, July 21 is expected to market wireless battery charging carrying case N-WL01S-W/-K (white and black), can put III or IV into two cells, with the Panasonic Qi wireless charging plate QE-TM101-W/-K (white and black) is expected in the June 24 listing.

Many and photographic equipment concerned all need the support of the nimh batteries, such as external flash, and so on. And in the product line fields have been leading company in Japan sanyo announced yesterday, officially launched the new news upgrade eneloop pro nimh batteries, the specific time to market in July 21.

It is reported, the new black eneloop battery than the older version of the pro eneloop battery capacity, up 25% to reach 2400 mAh, performance is very good, can make the flash and other accessories efficient work. And it is inherited the product of “generation before very slowly power generation” characteristic, and even after a year after leaving can maintain about 75% of the electricity, single weight for 30 g.

In addition, they also for retail its new eneloop battery of plus. This kind of product more emphasis on the use of high security, built-in PTC can prevent misuse Coefficient responds as required by the battery Temperature to rise.

Research on new batteries such as fuel cells and solar batteries, Massachusetts Institute of Technology has been at the forefront of the world. Recently, MIT Materials Science and Engineering, a research team published their results: in a few minutes to complete the “Charge” lithium-ion batteries.

 The lithium battery and the existing difference is: ordinary lithium-ion battery or lithium polymer batteries are solid-state electrolyte, which electrolyte is a lithium-ion battery black mud-like liquid mixture. The internal structure of the cell, half of electrolyte “mud” as positive, the other half of the different components of the “mud” as negative, between the two films separated by a one-ion. Its “charge” is very simple, as long as the discharge end of the mud-like electrolyte removed, replaced with a new electrolyte to complete the whole process only takes a few minutes.

 Because of this battery with a lithium-ion batteries and the advantages of lead-acid battery: the electrolyte used in lithium-ion batteries cheaper than traditional “charge” time is short; liquid mixing of the electrolyte lead-acid batteries than the pure and corrosive liquid and easy to carry And acid are weak, unit lead-acid battery energy density is much larger than the weight on edge. It is expected to replace the position of lead-acid battery vehicles and promote the development of new electric vehicles, or as an alternate energy power plants. MIT News Office described the prospects that the application of the battery analogy: “The batteries ‘charge’ as it is now using natural gas as fuel for cars is as easy as filling, quick and easy. “

May 31 , HPand the U.S. Consumer Product Safety Commission said on Friday that HP will expand its voluntary recall of laptop batteries size of the fire due to overheat Risk.

 CPSC said that in 2009 and in May 2010 after the initial recall, HP has received more information about the lithium-ion batteries overheating and rupture of the report, thus enlarging the size of the recall to include more models.

The recall involves another 162,600 batteries, these batteries are manufactured in China, imported by HP.

May 27, Texas Instruments Inc. announced a battery management ICs, and its rechargeable lithium-ion battery not only extend the life of groups, but also to maximize the hybrid electric vehicles, power tools, and uninterruptible Power supply (UPS) applications, the effective energy.

 Stackable bq76PL536 battery monitor, integrated balancer and protector ADC support independent battery voltage and temperature protection, power balance and communication between the chip separation. The device can measure the battery cell voltage is smart to support the error of 1 mV accuracy, fully meet the new lithium-ion batteries of various chemical components of demand.

 In addition, bq76PL536 also against overvoltage, undervoltage and over-temperature conditions to provide comprehensive secondary protection. Exceeds the safety threshold, the device will be set independent of the failure of the normal communication channel with the alarm output. Configure or enable the protection feature without the need of external components.

 Key Features and Benefits

 • ± 1 mV typical voltage measurement error can increase the precision to determine the remaining battery capacity monitoring accuracy, the efficiency of power balance and system security;

 • for overvoltage, undervoltage and overtemperature protection integrated two-stage components without increasing the cost, can improve security;

 • contribute to monitoring of the vertical stack can be up to 192 units, IC without external isolation between the components;

 • 1 Mb / s high-speed serial peripheral interface (SPI) bus can be run between each bq76PL536, to achieve reliable communication;

 • AEC-100 production flow in automotive applications, reliability and measurement;

 • driver power balance state of charge by maintaining a balance with the capacity to expand the effective capacity, extend battery life.

May 23, a Finnish power company recently developed a new type of solar battery panels, use 3-layer nano-coating can efficiently absorb solar battery energy.

Finland Savory Solar Inc. press release said that this new type of solar battery panels there are two main technical innovation, first used a total of 3 100 nm thick layer of coating, because of reflected sunlight to reduce energy loss caused; The second is to use a “current technology”, let the water rather than directly in the heat-absorbing plate absorber plate connected with the pipe loop, thereby enhancing the energy conversion efficiency.

Savory solar energy company said performance in the tests, this new type of solar battery panels in the high temperature of 300 degrees Celsius to work, and the current requirements of solar energy products are generally only resistant to high temperature of 220 degrees Celsius.

The statement said that the next step in this enterprise R & D goal is to work these new products, increase the temperature to 550 degrees Celsius. The company also plans to Munich, Germany in June this year, the International Solar Energy Exhibition to display the products, and formally put into operation at the end of the year.

To build a large-scale solar power plants, need to occupy a lot of land. However, with the growing world population, fewer people and more conflicts more and more prominent. Neighborhood residents in order to reduce the occupation of land, construction of solar power plant is now a lot of remote areas in the wild, and the high cost of long distance power transmission. In order to solve the energy transport and land use conflicts, the French and Israeli researchers have developed a solar water system, is expected to build solar power plants in populated areas.

A few years ago, people considered the siting of solar power batteries plants, the choice is the desert, because the desert land is not worth much, but sunny. In fact, the sea conditions and more similar to the desert, it will not occupy the land, but not the surrounding buildings, mountains and other objects blocking the sun. The reason why people do not take into account before construction of solar power plants in the sea, because the traditional solar panels can not resist seawater corrosion. However, the French and Israeli researchers developed a resistance to corrosion of water floating solar power systems, solar power plants built in the sea has become a bright future together.

From the current perspective of the development electric world, mostly located in economically developed areas in coastal cities, the population of these areas is also very intensive. In these areas to build large-scale solar power plants, and residents will inevitably compete for precious land resources. However, the vast coastal areas near the mainland no one living on the sea, if the solar power plant built in the sea, and residents will compete for both land and does not require long-distance power transmission from remote areas, power, low cost, less waste of energy .

Water not only the construction of solar battery generation system on the ocean, you can also build in fresh water lakes, the best option is to reservoirs. Often a reservoir in the population centers, not just the role of reservoir water for the residents, but also for residents of hydroelectric power. The researchers can take advantage of proposed reservoir of resources for building solar power plants in the reservoir, the solar electric power plants and hydro power plants and transmission networks, can take full advantage of existing resources and reduce transmission costs, providing people with more adequate energy.

Reuters reported that in Frankfurt, informed sources said, Daimler and Renault are planning to expand cooperation and plan to develop electric vehicle batteries.

According to knowledgeable sources said Thursday they are discussing cooperation plans battery, Renault and Evonik (EVONIK) will work together to enter the lithium battery company Daimler. In response, Daimler and Evonik refused to comment, while Renault and Nissan, Nissan can not get in touch.

Renault and Daimler had previously worked together in the small car has that in April 2010 Smart (details of the picture quotes) in the Twingo and develop the equity exchange, when both sides have said it is the cooperation on electric vehicles to negotiate.
In recent years, more and more car companies are increasing the intensity and chemical enterprises, the development of electric vehicle batteries to meet more stringent environmental regulatory standards and attract more consumers, environmentalists. United States, General Motors, Ford and Chrysler said it would in March and Rob Bosch and Samsung, to develop high-energy lithium-ion batteries.

Daimler said the German manager Magaz Thursday, Daimler also in the Japanese electronics company NEC Li-ion technology interest. Nissan and NEC, Nissan has launched a lithium ion battery joint project: AESC.