dell battery tips

   Why lithium battery charge and discharge process of temperature control is much the designers need to consider one aspect, that is, limit the battery temperature to extend battery life and technology is an important factor? This is because of the time in high-temperature lithium-ion battery charge and discharge, there will be an explosion hazards; at low temperatures when the charge-discharge will cause damage batteries. To restrict the limits of the battery temperature can be extended battery life, especially the prohibition of the following charge at 0 ℃. At 0 ℃ following rechargeable battery anode to promote the metal plating on the number, which may cause an internal short circuit, produce heat and battery instability and insecurity. There are a lot of battery charger battery temperature measurement devices to ensure that no charge in the limit temperature.

University of Chicago researchers said, they synthesized a new polymer plastic materials can be low-cost conditions, the performance of solar cells will be greatly enhanced.

Department of Chemistry, University of Chicago Professor Lu Ping Yu, who has committed such a polymer plastic material. He said that the key to this technology is to improve the photoelectric conversion rate, in the past of similar material in many photoelectric conversion rate of 5% to 6%, and while the new material photoelectric conversion rates have increased to 8%, and the recent also expected to improve.

According to introduction, this result has been the United States, California, a solar energy company to buy, and in the second half of this year is expected to translate into products.

Compared to traditional silicon solar cells, such as the basic polymer plastic solar cells a new type of low cost, easy to manufacture, so has the prospect of a much broader market.

Market research firm Fujitsu recently published energy-related economic system in the Japanese market survey results. According to the results of the survey predicted that the solar system in Japan’s market will shrink. 2007 (April 2007 ~ March 2008), Japan solar cell system-related sales of ¥ 148,700,000,000, and the year 2016 is expected to be reduced to ¥ 114,300,000,000.

Because raw materials do not use silicon or silicon to reduce the use of solar energy battery systems market continues to grow, the system average price there was a downward trend, and residential needs in the area of stagnant growth in the increasingly fierce price competition, so Fujitsu economic forecasts, according to the amount of calculation The solar cell market will shrink. And organic solar cells, it is estimated that by 2016 annual sales in Japan will reach 08 years of about 2.4 times, that is, ¥ 5,500,000,000. This line of non-silicon solar cells are expected to grow, so by the terms of the number of prediction markets will take the cross.

Will be driving hybrid lithium-ion rechargeable battery market growth

Fujitsu economic forecasts, after 2010, the Japanese lithium-ion rechargeable battery market is subject to the field of hybrid vehicle demand, the scale will be expanded. 2016 annual sales in Japan will reach 07 years of about 2.9 times, that is, ¥ 110,800,000,000.

LED lighting in 2011 will exceed the inverter fluorescent

Fujitsu economic forecasts 2015 annual lighting equipment (commercial inverter fluorescent lamp and LED lighting) Japan’s domestic sales will increase to 07 the year of about 2.6-fold, about ¥ 41,900,000,000. LED lighting market than the original prediction of the formation of the faster, the main manufacturers are expanding investment in equipment. Fujitsu economic think, LED lighting in Japan’s domestic market size in 2011 will exceed the inverter fluorescent lamp.

February 12 afternoon, the power of the Force Group Connaught Connaught solar power companies with Thailand’s largest solar manufacturer Solartron reached cooperation intentions.
Under the cooperation intention, power Connaught Solartron electricity in 2009 will provide 10MW cells, the first sign of 5MW cells, the ability of its component assembly 1 / 3, Connaught power cells will fill a gap in the Southeast Asian market. Introduction of electricity, according to Leno, 10MW cells to the total value of around 44 million U.S. dollars.

It is learned that this cooperation involves wafers, cells, battery components and systems engineering installation, cooperation will focus on film batteries, photovoltaic systems, solar lighting systems, this is the first time in Shandong Province for the export cells.

Connaught force main products for the solar power cells. An engineering capacity of 50MW, are Jinan City, Shandong Province and key projects. The project in July 2008 formally put into production, the product fills a gap in Shandong Province, the short term to meet the design production capacity, conversion rates, in retaining its position as the international forefront.

By the financial crisis as a larger trade, weak demand in U.S. and European markets, the ability to actively deal with Connaught, will be turning their attention to emerging markets, and achieve results.

It is said that our goal is to Connaught power: “to create the world’s most competitive solar cell OEM (OEM production) manufacturers.”

Lithium-ion battery (Li-ion Batteries) was first invented by the Japanese Sony Corporation and successfully commercialize a new type of battery, which for the negative electrode carbon materials for lithium-containing compounds for the cathode. When charging batteries, the batteries have a lithium-ion cathode generation, after generation of lithium-ion electrolyte to the anode exercise, as the carbon anode was layered structure, it has a lot of microporous, reaching negative electrode of lithium ion on the embedded The microporous carbon layer, the embedded lithium-ion more the higher the charge capacity. Similarly, when the batteries discharge, the embedded carbon in the anode layer of lithium-ion extrusion, and sports back to cathode. Back to cathode of lithium-ion more higher discharge capacity. Lithium-ion battery with a voltage higher than the energy of large, long cycle life, safety and good performance characteristics.

Rio Tinto announced the new can be said a few days ago, the company one of the main products TPS105-180W Monocrystalline Solar Module recently through the International Electrotechnical Commission IEC61215 (ground with crystalline silicon PV modules - Design to identify and stereotypes) certification.

Photovoltaic market development in view of the current situation, the company is listed after the business focus from amorphous silicon to crystalline silicon cell battery transition, and in Leshan-building industrial park to develop photovoltaic crystalline silicon battery business. January 15, 2009 corporate announcements to produce the first batch of silicon. We believe that, with the company Leshan Industrial Park building and crystalline silicon cell production line, crystalline silicon battery business will be the company’s enormous contribution to revenue. We continue to maintain the company’s profit forecasts in 2008 and 2009 EPS (earnings per share) were 0.46 yuan, 1.06 yuan, maintaining a “buy” rating unchanged.

1, cathode comprising:
a, cobalt acid lithium: live * cathode material, lithium-ion source, in order to improve lithium battery source.
b, conductive agents: improve cathode conductive films *, compensation cathode material live * * electronic conductivity.
Cathode films enhance absorption of liquid electrolyte, an increase of reaction interface to reduce polarization.
c, PVDF binder: will cobalt acid lithium, conductive agents and aluminum foil or aluminum net bonded together.
d, cathode lead: made from aluminum foil or aluminum strip.

2, negative electrode composed of:

a, graphite: Negative live * substances, constitutes a negative reaction of the main substances; mainly divided into natural graphite and artificial
Graphite two broad categories.
b, conductive agents: improve cathode conductive films *, compensation anode material live * * electronic conductivity.
Depth and improve the utilization rate of reaction.
To prevent the emergence of dendrites.
The use of conductive material liquid absorption capacity, improve reaction interface, reducing the polarization.
(Available under the graphite particle size distribution with or without choice).
c, additives: Reduce non-reversible reaction, improve adhesion, improve slurry viscosity, slurry to prevent precipitation.
d, water * Adhesives: The graphite, conductive agents, additives and copper foil or copper mesh bonded together.
e, cathode lead: from copper or nickel belt made.

Second, the ingredients Objective:

Ingredients are in fact the slurry process of the various components in accordance with the standard mixing ratio, modulation into a slurry, in order to facilitate uniform coating to ensure the most consistent * tablets. Ingredients generally includes five processes, namely: pre-processing of raw materials, mixing, wetting, dispersion and flocculation.

Battery technology is still the constraints of a purely electric vehicle industry bottlenecks, in the car battery than the power, specific energy, cycle number, the length of time spent charging the key indicators are the existence of bottlenecks, this point in the core technology and it is basically the same as the on the hybrid can be observed.

Three kinds of hybrid vehicle batteries, lead acid batteries because of serious environmental pollution, has already quit the mainstream of application; nickel-metal hydride batteries, although the mainstream of current business, but the main indicators of laboratory data were lower than the lithium batteries, and the theory basically non-existent room; lithium batteries despite the superior performance, but security can not be guaranteed, and the relatively high costs have also hindered its business. Letter Day Fan Kai Securities analyst Yu says that the poor battery performance so that pure electric vehicles in the mileage has a lot of constraints, in addition to some practical problems - has not yet completed the exclusive use of pure electric vehicle battery charging station.

Although fuel cell vehicles are truly “zero emissions”, but farther away from us. Sheng Wang told reporters that the current fuel cell vehicles using hydrogen energy mainly batteries, not only for the technology is demanding, but also because of hydrogen use, all aspects of a very large investment required.

Days congenial Gu analysts also said that the current high cost of fuel cells - the use of platinum as a catalyst for proton exchange membrane expensive prices of the same, hydrogen Preparation, sealing, storage and transportation difficulties. It is reported that Beijing Olympic Games, manufacturers have provided the cost of fuel cell passenger car to reach 350 yuan / vehicles, and hybrid passenger cars in the same period, compared with the cost of more than 100 million.

  Defined in accordance with the relevant Development and Reform Commission, the new energy automotive three core technology as the vehicle energy systems, drive systems and control systems; investment securities analyst with Wang Sheng Liu’s words, is the vehicle batteries, electric motors and electric control system. Battery technology which is particularly crucial, Donghai Securities auto industry analyst Chao told reporters that the reason why prices of new energy automobiles, that is because the composition of the high power battery; a cost of 260,000 yuan of the Toyota Prius, the battery cost 8 million in total vehicle costs 1 / 3.

This relationship between the middle and lower reaches, people can not help but think of a few years ago, starting near the LCD TV industry. Panel flat-panel TVs are the most important cost, and there was complete control over foreign companies in this market, resulting in the lower reaches of the brand manufacturers should therefore have no right to speak - then Skyworth Digital (00751, HK) Wang Dian-fu, chairman of the board’s respect, “80% of the profits have been earned away panel factory.”

The views of researchers have confirmed this conjecture. Gu congenial days analyst pointed out that the current industry trends are, automatic control technology, computer technology and power electronic technology has developed very sophisticated, automotive electronic control, and modular trend is very obvious, and the whole enterprise has become more like a Service type industry. Control system controls the automotive supplier industry chain research and development and technical direction of the highest profits.

Another researcher who declined to be named put it more bluntly, he said that the current status quo is that vehicle manufacturers do not have their own core of things. As a core component of hybrid vehicle power batteries and electric control system, basic to rely on imports, independent core technology is not high; in fact a lot of vehicle manufacturers is not in the “production” of new energy vehicles, but in the “assembly” of new energy automobiles . He said that if the car manufacturers should not self-owned core technology, is bound to be constrained by battery manufacturers, the cost of the problem can not be resolved.

Industry researchers generally believe that hybrids are the next few years the development of new energy automotive mainstream.

Orders for Hybrid Electric Vehicle Industry Chain broadly divided into three segments: the upper reaches of non-ferrous metals have raw materials, middle reaches of the car has power battery materials suppliers and battery manufacturers, car manufacturers have downstream. Control of core technology, so that manufacturers will be the middle reaches of the battery The biggest beneficiaries of the development of the industry; and vehicle manufacturers in this industry hardly feast to share anything.