Lithium-ion battery has the following advantages:
- High voltage, voltage of single battery go up to 3.6-3.9V,and it is 3 times than a Ni-Cd, Ni-H batteries ,such as Dell inspiron 6000 battery .
- Larger specific energy , at present real energy is 100-125Wh/kg and 240-300Wh / L (2 times higher than Ni-Cd, 1.5 times higher than Ni-MH), the future, as technological development, specific energy up to 150Wh/kg and 400 Wh / L
- Long cycle life, in general, Lithium-ion battery can reach more than 500 times, or even 1000 times or more. For a small electrical current discharge, the battery will double the lifespan of electrical appliances competitiveness.
- Safety performance is good, and pollution-free, no memory effect. like the Dell inspiron 6400 battery . As the predecessor of Li-ion batteries, the formation of lithium dendrite easy to short-circuit reduce its application areas: Li-ion does not contain cadmium, lead, mercury and other elements of the environment pollution: Some processes (such as sintered) and Ni-Cd batteries there is a major drawback for the “memory effect”, seriously hindered the use of batteries, but Li-ion does not exist at this problem.
- Self-discharge is small, after full of electricity at room temperature Lithium-ion battery is storaged for a month ,the self-discharging rate is about 10%, much lower than Ni-Cd of 25-30%, Ni, MH 30-35%.
- Can quickly charge and discharge,for one thing ,the Fujifilm np-40 . 1C charging capacity can reach more than 80% of the nominal capacity.
- Operating temperature range is high, operating temperature is -25 ~ 45 ° C, with the electrolyte and the positive improvements, it is hoped to broaden the -40 ~ 70 ° C.
Lithium-ion batteries also exist some disadvantages, such as:
- Battery costs are higher.take the Fujifilm np-100 battery for example. it mainly reflected in the price of LiCoO2 cathode materials for high-(Co resources to small), electrolyte purification system difficult.
- Not high-current discharge. As the organic electrolyte system, and other reasons, the battery internal resistance is big ,compared to other type of batteries. Therefore, I demand a smaller discharge current density, the discharge current at 0.5C below normal, only suitable for small and medium-current electrical use.
- Iit need to protect line control.
- Overcharge protection: Battery over charging would undermine the positive structure, for one thing ,the Dell inspiron e1505 battery . which affects the performance and life; the same time, the overcharge to the electrolyte decomposition, excessive internal pressure caused by leakage and other problems; and therefore must be under constant pressure 4.1V-4.2V charge;
- Over-discharge protection: over-discharge recovery of active substances will cause difficulties, they also need protection circuit control.
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China’s lithium-ion battery standard
China’s current Laptop battery safety standards for lithium-ion batteries contain safety requirements or product specifications are as follows:
1.GB/T18287-2000 “cell phone use lithium-ion battery general norms”; 2.GB/T19521.11-2005 “Li-ion battery pack hazardous properties of dangerous goods inspection and safety standards” 3.GB/Z18333.1-2001 “Electric road vehicles lithium-ion batteries “; 4.YD1268.1-2003″ mobile phones and lithium battery safety requirements and test methods “; 5.SJ/T11169-1998″ Lithium Battery Standard “(eqvUL1642: 1995); 6. QB/T2502-2000 “general standards for lithium ion nikon d40X vertical-grip“; 7.QC/T743-2006 “electric vehicles using lithium-ion batteries”; 8.SN/T1414.3-2004 “import and export of battery safety test methods Part 3: Lithium ion batteries. ”
The above criteria, the first three as the national standard, the former two for a recommended national standard, but GB/T19521.11 Chapter 4 and Chapter 5 for the mandatory elements, the third criterion for the guidance of technical documents; after 5 respectively, post and telecommunications, electronics, light industry, automobile, commodity inspection industry nikon d60 vertical-grip standards, post and telecommunications industry standards YD1268.1 mandatory standard, the other four are recommended standards.
Electronics industry standard SJ/T11169 the technical content of the 1995 edition with the UL1642 standard equivalent.
Currently awaiting approval issued safety standards for lithium-ion nikon d80 vertical-grip contain safety requirements or product specifications are:
1.GB / T ××××- 200 × / IEC62133: 2002 “containing alkaline or other non-acid batteries and battery electrolytes – Portable sealed batteries and battery safety requirements”; 2.GB/T18287-200 × “mobile phone use lithium-ion fujitsu lifebook c2320 battery and battery universal norms”; 3.SJ / T × × × -200 × “mobile power systems for portable computers General Specification.”
The first two national standard, the third for the electronics industry standard, all three are recommended standards. The first is applicable to all types of alkaline batteries for portable applications, including lithium-ion battery; the second revised version of standards GB/T18287-2000 standards for lithium-ion fujitsu lifebook c2330 battery for mobile phones; third standard applies notebook computer lithium-ion batteries.
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Safety standards in three areas
Recently, the Laptop battery Ministry of Information Industry set up the Electronic Product Safety Standards Working Group to prepare to carry out the work safety standards for lithium-ion batteries, and put forward to develop safety standards for lithium-ion batteries for portable work objectives, combined with the status quo of China’s standards for lithium-ion batteries, the proposed safety standards for the future carry out the work of the following several measures in order to obtain greater effectiveness.
1. To national standards in the form of a unified nation-wide safety standards for lithium-ion canon eos 500d vertical-grip.
Lithium-ion battery as a ubiquitous product, unified its safety standards are not only fully protect the interests of consumers needs, but also reduce the cost of doing business, standardize the industry development requirements. Taking into account the lithium-ion battery production, marketing and other areas across the national economy, a unified security standard form should no doubt be the highest level of national standards. In order to maintain safety standards and that the unity should take the following measures: on the existing state and industry standards, they should be integrated canon eos 1000d vertical-grip technical content to include or an alternative manner; in the future with the development of lithium-ion battery, through the standard way of amendments to update their safety requirements will no longer be the development of other safety standards.
2. According to the product of lithium-ion battery standard, the standard level of adherence to the “moderate” principle.
Fur products and standards are inter-relationship between the different nature of the product accordingly, requires different standards, the current lithium-ion battery roughly divided into two major fujitsu lifebook c2240 battery energy-and power-type products, two products in materials, design structure, etc. There is a certain the differences in the same security context, as well as its standard test method requirements are likely to be different.
Commonly referred to as belonging to the former category of portable battery products, including mobile phones, laptop computers, digital cameras and video cameras use lithium-ion batteries, electric tools, electric bicycles and electric vehicles using lithium-ion battery products grouped into the latter category, the proposed difference to develop fujitsu p250 battery safety standards for lithium-ion batteries for portable and power-based lithium-ion battery safety standards.
Standards should be appropriate means to seek and establish product safety and performance of the best combination, if it is not simply focus on safety, of course, the more stringent requirements as possible, but the overall technical level of the product restrictions, the better the security often means more poor electrical performance level, a typical example is the current charge GB/T18287-2000 the 3C to 10V over-voltage charging requirements, unless the significant expense of capacity or life, or the current lithium-ion batteries used in mobile phones simply can not achieve this has been does not prove the necessary safety requirements. From the application point of view, it is obviously not worth the candle, and do not meet the standard within a certain range to create a basic principle of the best products.
3. To enact a specific safety standards for lithium-ion fujitsu fpcbp65 , fujitsu fpcbp65ap batteries, the standard covering the product design and manufacturing processes, and establish the appropriate oversight authentication mechanisms.
Lithium-ion battery safety standards and product specifications should be separated from the development, its benefits are standard in a more flexible way to fit the needs of product development. In the widely used under the facilitation of the electrical properties of lithium-ion battery upgrade is almost with each passing day, compared to its security requirements is relatively fixed, respectively, standard-setting will enable the two to move in the form of sub-objects to meet the changing needs of their own, so as to avoid in the past all of the requirements of product standards of the general canonical form of the shortcomings of time-consuming fujitsu lifebook c2000 battery amendments.
The vast majority of the safety of lithium-ion battery is difficult to simulate from the current safety standards, the internal short circuit caused by defects, only the lithium-ion fujitsu lifebook c2310 battery design and manufacturing process quality control system fully integrated into the product of internal short circuit can only effectively eliminate the risk, and it in the industrial sector in a large number of security incidents lithium-ion batteries are summarized and reached consensus. Therefore, improving the structure of existing safety standards, will expand its content to the upstream product design and production processes are fully and effectively to protect the safety of lithium-ion batteries needed. This, in turn has brought the standard implementation of operational problems, the proposed new forms of standards based on lithium-ion batteries to carry out mandatory safety certification, in addition to testing the final product, the authentication methods should also include product design and process review, supervision of the manufacturing process content and reference to quality system certification practices, establish a regular review and random sampling of the system, so will ensure that the maximum nikon d40 vertical-grip could be carried through standard content and implementation.
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Lithium-ion Laptop battery safety
Standards should be appropriate means to seek and establish product safety and performance of the best combination, if it is not simply focus on safety, of course, the more stringent requirements as possible, but the overall technical level of the product restrictions, the better the security often means more poor electrical performance levels canon eos 350d vertical-grip.
Lithium-ion battery performance level is the most advanced and fastest growing commercial chemical power, and become mobile phones, laptop computers, digital cameras and other high-end portable consumer electronics products matching the power of choice. But its structure and principles of weakness, frequent occurrence in recent years, lithium-ion battery explosion wounding or recall of products due to security risks and other incidents, lithium-ion canon eos 400d vertical-grip safety has become a hot topic in national life, with the attendant safety standards for lithium-ion battery and related work has also become the focus of attention of various parties.
China Li-ion batteries to be coordination between the various standards
Current domestic and international basic safety standards for lithium-ion batteries are in line with detection-based standard, that standard provides short-circuit, over canon eos 450d vertical-grip charge, over discharge, vibration, shock, extrusion, impact (drop), hot-box, low atmospheric pressure, temperature cycling and other electrical , mechanical and environmental aspects of the pilot project, to simulate the battery in normal use and foreseeable misuse of the time of application, to ensure that products in these cases, security. This standard form has the advantage of clear criteria, operability is good, just for the finished battery to carry out laboratory testing to determine whether you can meet the standards, the disadvantage is that can not be fully effective in protecting the product quality and reliability, because the security of a product performance is an integral aspect of product design and manufacturing processes formed and established, the current standard of evaluation subjects with this biased, in addition to safety tests are destructive tests fujitsu lifebook c2210 battery, can only be conducted using samples taken, this method itself There are also a certain degree of risk probability.
Contrast to the standard can be seen at home and abroad, China’s safety standards for lithium-ion batteries lack of overall planning, basic fragmented. On the one hand between the state and industry standards of 2, as well as a lack of coordination between various industry standards, there is a certain cross-standard objects fujitsu lifebook c2220 battery, repeating the other hand, there is no uniform standard of guiding ideology, both simple safety standards, including the electrical properties have , environmental performance and safety performance applicable to all the demands of the general norms such as the nature of standards. In contrast, the same organization within the system of foreign ideas and standards in the work of inter-relations are more unified, coordinated, such as the IEC for the safety of their products a separate standard-setting, other criteria such as product specification electrical properties of the total, and other requirements, safety requirements direct reference to safety standards; IEEE are developed for different purposes, including security requirements, respectively, including general specifications of products fujitsu lifebook c2230 battery.
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The so-called direct methanol fuel Dell vostro 1500 battery (Direct Methanol Fuel Cell) belongs to the proton exchange membrane fuel cell (PEMFC) in one of the categories, the direct use of aqueous solutions of methanol as fuel and steam supply source, through the restructuring of devices without having to re-methanol, gasoline and and then remove the hydrogen such as natural gas for power generation. Compared to proton exchange membrane fuel akku (PEMFC), direct methanol fuel cell (DMFC) low temperature of Health electricity, fuel components and battery low-risk features such as simple structure, so that direct methanol fuel laptop battery (DMFC) portable electronics applications may be mainstream.
Direct methanol fuel cell is a proton exchange membrane fuel cell as a variant of the use of methanol directly rather Needless to pre-restructuring. Methanol at the anode into carbon dioxide, proton and electron, as the standard proton exchange membrane fuel Dell vostro 1400 battery , as protons through the proton exchange membrane and oxygen in the cathode reaction of electrons through the external circuit to reach the cathode, and doing work.
The expectations of the Dell latitude d830 battery operating temperature is 120 ℃, it is slightly higher than the standard proton exchange membrane fuel cell, its efficiency is about 40%. The disadvantage is that when low-temperature methanol is converted to hydrogen and carbon dioxide than when the conventional proton exchange membrane fuel cells need more platinum catalyst. However, this increase in costs can be due to easy access to liquid fuels and will be able to work on the revitalization Needless to dwarfs. The use of direct methanol fuel Dell latitude d820 battery technology is still in its early years of development, it has successfully demonstrated can be used as mobile phones and laptop computers power supply, the future for a specific end-user also has the potential to use.
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Plastic Solar Cells
Solar energy has become Dell Inspiron 1526 Battery widely recognized throughout the world of clean energy, but also how to improve the efficiency of its approach by which to reduce the cost of solar cells have become a topic of wide discussion, and now our neighbors South Korea on a new breakthrough in this regard .
Not long ago, South Korean researchers have used the principles of plant photosynthesis, have developed a plastic as the material to solar cells, batteries cost far less than the ordinary solar cells. At present, this plastic solar cells, photovoltaic energy conversion rate has reached 6.5%, nearly 7% of the commercial standard. Since the Dell Inspiron 1720 Battery of plastic as the main material, so the use of polysilicon as the material costs than the ordinary solar cells is much lower.
Moreover, unlike in the past can only absorb visible light in sunlight the solar cell is different because it uses two overlapping laminated solar cell structure, and this addition to the battery can absorb visible light, but also can absorb near-infrared, which greatly improved of solar Dell Inspiron 6400 Battery energy utilization. Thereby reducing the cost basis to achieve efficiency improvements.
The new technology can reduce the amount of platinum in photovoltaic cells
Israeli scientists have developed a new technology Dell Latitude D420 Battery for battery in the platinum nano-particles can be solar energy into electricity, thus reducing the production of photovoltaic cells use platinum, which means the cost of solar panels will be reduced.
Israel Bar-Ilan University, Nanotechnology Research Institute, Professor Arie Zaban said the cost of solar technology an important factor in the successful application in order to obtain widespread use, solar cells must be less than the cost of the use of natural energy and produce electricity.
The use of platinum nanoparticles can reduce the amount of apple A1175 , apple A1185 platinum and therefore significantly reduce the cost of solar energy production.
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Light Funnel
Latest Discovery HP Battery and Innovation: “Light Funnel” generating Apple Battery capacity than conventional silicon cells increased 3-4 times
Several times to track the new concentrator photovoltaic systems have been known as the Nobel laureate Lee is “the perfect combination of theory and practice of China’s environmental protection cause and the use of new energy sources will have a profound impact.” News today from the Ordos City, Inner Mongolia Autonomous Region Development and Reform Commission was informed that the introduction of the system construction of 205 kilowatts desert demonstration power plant end of this month will be fully grid with compaq presario x1000 battery.
With the widely used flat compared to a fixed PV systems, with the same amount of silicon cells, the actual output power can be increased 3-4 times, so that our country is expected to rely on new technologies with independent intellectual property rights to address the high cost apple a1021 of solar power disruption The worldwide problem.
Two years ago, was the University of Cambridge Corpus Christi College Senior Fellow, is currently professor of China University of Technology Dr. Chen Yingtian home should be days of Anhui New Energy Co., Ltd. to jointly develop a new multiple condenser tracking photovoltaic apple a1036 power generation system, two prototype has been in the Institute of Theoretical Physics, stable and reliable operation, etc. for over a year. The system is also installed on the roof of the Shanghai World Expo.
Reporters on the demonstration power plant to see, from octahedral reflector surrounded condenser or “light funnel” and the ordinary photovoltaic cells constitute a discrete unit of electricity. Smooth and slick as the diamond-like funnel of light in the sun shine. According to reports, this new condenser surface and the tracking method can be more effective to accept solar energy, even if it is cloudy, cell fixation can also be achieved according to set procedures for accurately tracking the movement of the sun with apple A1078 , apple A1079. Compared with the conventional tracking mode, the new device greatly improved the reliability and accuracy, and more suitable for field application.
June 8 this year, to begin the comparative experiment showed that the new multiple concentrating photovoltaic power generation system to track the average power generation volume is flat with an area of 2.5-4 times the fixed cells can be reduced by 70%% At this high energy consumption, high pollution of the apple A1148 silicon cells use. According to reports, demonstration power plant electricity price will be at 3 yuan / kilowatt-hour or so, an ordinary flat-panel technology, cost of power generation 50%%.
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Subject collision pacemaker cell
This unique pattern formed by the nano- compaq presario b1200 battery invention is the result of collisions of many different disciplines need materials science, energy storage, and chemistry expertise. In addition to Linhardt, the paper’s authors also include materials science and engineering Pulickel M. Ajayan, Professor and engage in chemical research, Professor Omkaram Nalamasu.
The researchers used ionic liquid, essentially a liquid salt, as the battery electrolyte. It is noteworthy that the ionic liquid does not contain water, which means that there is no such cells can be frozen or evaporated material. No water in this material, which makes the paper energy storage device can in compaq presario m2000 battery extreme temperature conditions work properly.
In addition can be used in a lot of small-scale hand-held electrical devices, the paper batteries extremely light weight makes these cells into the vehicle, aircraft or ships an ideal choice. It can also be made into different shapes, such as car doors, which is likely to raise a number compaq presario r3000 battery of important new engineering invention. Shaijumon professor added: "Since the vast majority of cell components of paper, so it is also environmentally friendly."
At the same time paper also has a high biocompatibility, so this new pattern the battery / super capacitor with a mixture of implantable devices as a power supply potential. The research team did not add electrolytes to produce the paper battery, and a testament to human sweat, blood and urine of naturally occurring electrolytes can be used to activate the battery. Pushparaj says: "so that you can use such a cell as a small-scale devices like pacemakers such power, while not yet common household compaq presario v2000 battery will be those harmful chemical substances into the human body."
Create the paper batteries are inexpensive materials, but now the team have not yet found a cheap, mass production of the device can approach. Their ultimate goal is to be able, as the printing press to produce a roll as a roll.
Professor Ajayan said: "When we overcome this technology, we basically have the compaq presario v4000 battery ability to print batteries and super capacitors of. We believe that this technology is the current energy market, as well as the electronics industry needs, people are always constantly the pursuit of smaller, lighter power supply. What we in this paper batteries can be applied to any kind of electrical appliances. "
The research team has applied for patent protection for the invention. At present they are committed to advancing the efficiency of the device compaq presario v5000 battery, and to explore different production technologies.
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New high-end batteries
Sailing’s New high-end latitude c610 battery for Volkswagen cars matching
Recently, Sailing Co., Ltd. developed a new self-environmental protection, high-security cell 58043 (C6) products have technological breakthroughs, and will produce high-end Volkswagen cars for matching.
At present, Germany’s Volkswagen TL82506 new standard, is the world’s recognized lead-acid latitude c640 battery the most difficult test. Recently, FAW-Volkswagen representatives developed for the sailing 58043 (C6) cell products were environmentally friendly batteries, security TL82506 Standard Test recognition. After three days of intense and orderly trial, sailing developed 58043 (C6) cells have withstood the tilt, inverted, building pressure and ignition tests, fully meet the new Volkswagen TL82506 standards.
University of Tsukuba successfully quantum-dot solar cell conversion latitude c800 battery efficiency increased to 8.54%
The International Society of solar cell technology, “EU PVSEC” on the University of Tsukuba made public to the use of quantum dot solar cell of the photoelectric conversion efficiency increased to 8.54% of the technological achievements. Quantum-dot solar cells can reach the theoretical conversion efficiency of more than 60% of well-known is the future of efficient solar cells is one candidate.
Developed by the latitude c840 battery University of Tsukuba quantum-dot solar cells are pn junction between the multiple quantum dot layers stacked quantum-dot superlattice-based products, in the 1cm square alternately superimposed on the GaAs substrate 30, and 30-layer InAs layer GaNAs super-crystal lattice structure. Its characteristics are in the GaNAs formed on InAs, in order to ease the underlying strain between the lattice can be self-generating high-3 ~ 4nm, diameter of 20 ~ 30nm multiple quantum dots.
Lead to quantum-dot superlattice structure created between combination, in the conduction band formed on micro- sony vgp-bps2a battery, so that the use of various wavelengths of light possible.
Improve the quantum-dot superlattice type of conversion efficiency of the need to address the following issues: (1) reduce the thickness of the middle layer, and strengthen the integration between the quantum dots; (2) to enable the close arrangement of quantum dots; (3) stacking more layers . The University of Tsukuba to the middle layer thickness reduced to half of the past – 20nm, so that conversion efficiency from 3.7% to 8.54%. University of Tsukuba in the future goal is to 2020 sony vgp-bps2c battery, the conversion efficiency increased to 40%.
Tags: batteries, high-end, New
Automotive Industry and Semiconductor Industry
“Rigidly adhere to silicon will not work nikon en-el8 battery.” University of Electro-Communications and Systems Engineering, Professor Xincheng one in the electronic Information Technology Industries Association (JEITA) organized the seminar “Electronic equipment and electronic components related to trends,” on the, on August 31, 2007 to do a paper entitled “Current Situation and automotive electronics Future Trends “speech.
Xincheng one had been in software nikon en-el9 battery development for the automotive manufacturers to provide support. The speech can be said that a representative of the new car manufacturers Cheng, and most of the audience – semiconductor manufacturers raised the expectations of developing automotive electronics.
Cheng said the new one, the requirements of the automotive semiconductor properties, the final analysis, heat, vibration, electromagnetic noise tolerance performance requirements. “For example, the Lexus LS460 integrated 100 micro-controllers, more than 100 motor, and through CAN (Controller Area Network) to connect. Of course, the car will be hot everywhere olympus battery and olympus blm-1 battery, producing electromagnetic noise. In this case, the semiconductor Only +70 ℃ heat resistance is not enough. electromagnetic interference must also be reduced. Of course, also need to drive in bad road conditions and will not damage the anti-vibration. ”
Cheng said the new one in order to meet these requirements, need to use silicon (Si) semiconductor materials, outside the development. “It’s always rigidly adhere to silicon is not acceptable. Hope that we actively develop silicon carbide (SiC), diamond and other semiconductor. This is evident from a vehicle’s interior trend of high-voltage power sony vgp-bps9a/b battery supply is also necessary to look at.”
Automotive electronics “hot spots” is a pilot monitoring
Xincheng a speech described the automotive industry is currently developing a number of full-vehicle semiconductor application projects. “In the monitoring, vehicle monitoring devices, observation and development has come to an end. Now is the driver to monitor hot sony vgp-bps9 battery spots.” At present, the use of cameras filming the pilot of the face, the eyelid is closed when you continue to use cold, sleepy sleepy to prevent the elimination system, the pupil can not be confirmed with the camera focus automatically when deceleration stop to prevent drink driving systems are under development (see the stations report).
In addition, the new Seiichi also traveling through the analysis of the types of voice recognition used tires, be sent to the control system to adjust the control mode of the system, and the use of the vehicle in front of the road status data and inform the master sony vgp-bps8 battery behind the vehicle system as a “hot spot” areas were introduced.
Tags: Automotive Industry, battery information, internet, life, news, Semiconductor Industry
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