HP Laptop Battery Super Blog Here

Use rechargeable batteries for laptops, one of the advantages of the desktop, it can greatly facilitate a variety of environments using laptops. Introduced the first battery is nickel cadmium VGP-BPS8A VGP-BPS9A batteries (NiCd) battery but has a “memory effect”, each charge is required before the evacuation, very easy to use, and soon found himself nickel-metal hydride battery (NiMH ) replaced, NiMH not only failed to “memory effect”, but can do more per unit weight of 10% of electricity. The battery most commonly used is lithium-ion battery (Li-Ion), it is also ineffective “memory, compared to NiMH per unit of weight gain more power, the price two times higher than the NiMH . In the same weight, these three kinds battery is 1:1.2:1.9 ratios.

Notebook batteries currently used in three main categories: 1. Nickel-chromium batteries, 2. Ni-MH battery, 3. Lithium, they are generally expressed as: Ni-Cd Ni-Cd, Ni-MH Ni-MH, lithium-ion battery LI.

The purchase or replace the battery when the laptop for many users, “battery” may be unfamiliar. At the outset, batteries and batteries are two concepts. A battery is composed of several slightly bigger than your thumb, cylindrical, up to about 7.8 cm, the voltage is 3.6V small units, a professional name that is called 18650, Sanyo and Samsung is the first manufacturer in China. Batteries as a small battery, thanks to the combination series, that is, we see that the battery a. Then talk about how to determine if the battery is several nuclei: IBM ThinkPad T41 battery  IBM ThinkPad T42 battery

One way: Disconnect the battery for the number of contacts to see, there are a few tens of cores. But it is a “minister” approach. Let’s take a look at “Cao Chong” is how, “said the elephant”: the look of your battery nominal number of v, such that 14.4v, then divided by 3.6 to 4, then turned out to be four batteries together in series. And then take a look at the capacity of the battery pack, for example 4400mAh, then prove that the two aforementioned sets of batteries in series, because the battery capacity is low for 2000 — 2200mAh or more, and together the two groups can be achieved must be 4400mAh. In both cases, the battery is 4 × 2 = 8 cores.

The composition of laptop battery

Notebook battery from the shells, printed circuit boards and batteries belonging lithium ion battery. People talk about batteries in general refers to the number of batteries in the battery mAh refers to the ability of the laptop battery. Dell Inspiron 1526 battery  Dell Inspiron 5100 battery

Mainly by the protection circuit (or the secondary circuit protection), and the capacity of the circuits in two parts, the laptop battery charge and discharge management and safety.

Time Laptop Battery standby mainly by the value mAh decide. Under normal circumstances, a little more battery, the mAh value is greater than longest standby time. Battery life for notebook mainly by the charge and discharge times to measure the quality of the products is generally eligible to 500-600 times. Therefore, efficient use of laptop batteries within two years expired the 361742-001 371785-001 battery is aging, standby affect the strong decrease of the mobility of laptops.

Abstract:

Most laptops today use lithium batteries, in which over 13 inch notebooks, especially over high capacity 6-cell battery, while the 13-pad of thumb to ensure portability, Many products have chosen the 3-pin thin around the battery. To get the most battery life of portable, many manufacturers have started to develop fuel cells, I believe that sooner or later we can see the production version of the fuel cell, then you really can-office Portable Meteorologica lPA3395U-1BRS PA3399U-1BAS

With the cell phone technology, the mobile phone battery was a “regime change”. In the first NiCd and NiMH Li-ion battery, and then Li-ion polymer batteries. Greater energy density, smaller size, greater life expectancy of mobile phone batteries strong support for the development of mobile phone. The mobile phone battery following are the key technologies and important parameters to make a brief review. IBM ThinkPad R52 battery IBM ThinkPad T40 battery

Batteries mobile phone technology

The battery technology application to a large extent by decisions based electric technology development. With the continuous development of technology, batteries, NiCd and NiMH batteries gradually decreased at the same time, Li-ion battery production has risen steadily, and the Li-ion polymer batteries have started to occupy a certain market share.

In general, batteries have two electrodes anode and cathode. Anode to release electrons and produce a lot of holes, the polarity is positive accumulation of cathode electronics, the polarity is negative. Pricing, the current in-house flow of the anode cathode discharge to the contrary, the current outside the cathode to the anode, the power load. Parameters common battery performance are defined as follows: If a battery is fully charged after the discharge capacity after an hour the whole space, then the current rate of 1C; to recharge a battery or batteries pieces full of tension ( 4.2 V for example), then through the discharge power is empty (eg, 3.0 V) is called a charge-discharge cycles, when the battery capacity to maintain a valid value (like amount of charge up to 80%), the battery charge and discharge cycles can increase the number of known life cycle of the battery. Dell Inspiron 1300 battery  Dell Inspiron 1420 battery

1. NiCd and NiMH batteries

NiCd batteries use cadmium as the anode, the cathode NiOOH. NiCd batteries have a life cycle longer, better temperature characteristics and high density of the battery. As a battery faster, Cd pollution material is relatively heavy environmental and density of the battery must be further enhanced, while NiCd battery is difficult to increase the capacity and will be disposed of market applications.

NiMH batteries using MH as the anode, cathode and NiOOH. NiMH battery is charged and the discharge characteristics, and cell density than nickel-cadmium batteries has increased by 30%, and are more environmentally friendly. NiMH better safety performance in itself, it was anti-overload protection and self-discharge capacity of healing, compared to Li-ion batteries, it does not require additional protection circuit and board containing PCBs. NiMH batteries have many advantages, but in the charging efficiency, battery and the density of leakage current of these areas need further improvement. 338794-001 361742-001

2. Li-ion batteries

Li-ion batteries using carbon or graphite as the anode and the metal oxides or Co / Ni / Mn cathode, organic, or an electrolyte solution to polypropylene as insulation. As the material, Li-Ion batteries must be placed under some form of cans solid, if pressure is good, and the shape is fixed.

Li-ion batteries provide 3.6V operating voltage is generally more stable performance. Its power density is very high self-discharge of the leakage current is small, large capacity and a small external. In addition, Li-ion batteries, long battery life, typically more than 400 cycles of loading and unloading, and the life cycle of work and stable performance. Figure 1 show the different life cycle of the Li-ion battery under the 1C discharge voltage and the curve of time. VGP-BPS5 VGP-BPS9A

When the Li-ion batteries in cell controlled by the field of traditional chemistry, in improving the energy density at the same time, the design of the battery and the chemical change also makes the key parameters of the battery can be improved. Li-ion battery has been applied in many system designs, it may be well positioned to meet the energy needs of the system.

Of course, Li-ion batteries is volatile and flammable material composition, and therefore the design of the battery, safety is an important criterion.

3. Li-ion polymer battery cells

Li-ion polymer batteries batteries batteries with Li-ion battery similar to the use of carbon as the anode, metal oxides as cathode, gel electrolyte membrane using the gel as an insulator. Li-ion polymer batteries have greater capacity and higher energy density. With the Li-ion batteries similar to its self-discharge of the leakage current is low. However, Li-ion polymer battery of stability is not good, so it needs to operate more stringent. A1060 M8403

Li-ion polymer battery technology to significantly improve the energy density of battery life, temperature and duration of conservation, energy efficiency of the battery is very high. Appearance, Li-ion polymer batteries using plastic containers, compared to Li-ion battery shell metal has a definite advantage, but the Li-ion polymer batteries are also easy to force expansion, so the production of materials, flexibility of error for a strict control. From a security standpoint, Li-ion polymer batteries and battery fever electrolyte leakage problem has been a real headache. Because Li-ion polymer battery is easy to develop, its reliability needs further improvement.

In short, there are many manufacturers in the continually improving Li polymer battery technology, and supply-ion batteries with the same service prices. However, the stability of the polymer has not been verified, but also be further improved and developed.

Experts predict that called ISP (FluoroSulfonylImide) of the TFSI anion is known to be a substitute material. This equipment and TFSI is different from the right and left with the non-CF3, but F. CF3 F ratio smaller, thus reducing the overall size. As mentioned above, small ions, the charge density will be larger, easier to form crystals, but the magnitude of the size of ions, most of the viscosity the easier it is to reduce the effect best. The reason is that the ionic liquid through the ionic liquid itself, the performance of the viscous resistance of promoting the charge.

Above have been saying that the negative ions, in fact, positive ions are also a number of options. For example, you can use the name EMI (1-ethyl-3-methylimidazolium) substances. In the melting point is concerned, the use of salt TFSI -18 ℃, the use of salt as a ISP -12.9 ℃, the practical application there are no major differences. The viscosity at 25 ℃ different ISPs 32.6mPa • s • s 17.9mPa until reduced by about half. In addition, ISPs in the electrolyte, the ionic conductivity reflect the performance of 9.1mS/cm increased 16.5mS/cm, has raised almost doubled. These indicators, but not as an organic solvent widely used at present, but belong to the same level of organic solvent. In this way, ISPs should be applied to the Dell FK890 battery.

In practice, the battery experiences of First Instance has achieved unexpected results: FSI and TFSI different, is not detrimental to the anode. The TFSI, there will be damage to the battery anode serious problems. And for reasons unknown.

Although still in the evaluation of the implementation stage, but not the anode corrosion, at least the performance of basic operation was confirmed. That any “rich” (Kansai University, Ishikawa), so that future performance will be constantly improved.

Make all the technology of solid coating particles, the battery

The second way to leave the organic solvent is the set of cells in the solid state. Original positive and negative is strong, then simply become a solid electrolyte can be. Osaka Prefecture University has studied the use of the class of sulphides all batteries, the solid electrolyte. For example, heating Li2S-P2S5 crystal glass after battery class, its conductivity at room temperature for more than 10-3S/cm reached. Has been achieved with the current use of the same level as the liquid electrolyte. In addition, the conductivity also increases in May are forecast to have reached a “seven times” the objective “dark horse”.

Osaka Prefecture University in April 2009, published jointly with the Toyota battery technology for all-solid coating particles. All semiconductor state thin film lithium battery type and accumulation-type. To use the car, the capacity is the decisive factor, if the University of Osaka Prefecture may improve the ability of the accumulation type launched a vigorous development. Specific approach of the negative active material, the cathode active material and solid electrolyte particles composed of three samples, respectively, according to the levels of bias of the Dell GD761 battery law is gradually changing the mixing ratio, mixing and overlapping.

The difficulty lies in the method of grain contact resistance limit. This case, if the central government of the liquid electrolyte can be used “phenomenon” wet to ensure solid contact and liquid. While the differences between solids, micro-view of a single contact. In response, industry has been taken to put pressure on the deformation of tiny particles occurs as a means to increase the contact surface of the evolution of ideas.

Osaka Prefecture University was chosen as a starting point in another direction, by the use of solid electrolyte thin film coating of electrode active material particles on the surface to reduce contact resistance. Electrode active material LiCoO2 used (cobalt oxide, lithium), the VGP-BPS9A solid electrolyte Li2S used P2S5 types of material particles coated with PLD (filing of pulsed laser ablation) method.

PLD is one of the methods of thin film deposition. Objective is to use laser ablation, so the target material sputtered thin film formed on the bottom. Here, the practice is located in the above objective, located in the lower floor. Side of the floor vibrating, so the particle flux LiCoO2, hand, and the solid electrolyte particles are deposited on the surface to form a thin film. The particles are made from ALL-strong unit and the use of coated particles avoiding manufacturing time compared to a larger unit capacity. Confirmed the effectiveness of coated particles, so that all semiconductor sony VGP-BPS2A battery state practice, a major breakthrough.