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In the phone, whether it is assessed from a technical perspective or from price considerations, the battery is a very important position. Until now, the market is selling the mobile phones, used batteries have basically completed the battery from nickel to lithium transition. Perhaps because of the battery has just completed a revolution of nickel batteries to lithium batteries, so there is no uniform understanding of lithium batteries, in many cases, inaccurate statements and practice is quite popular. Therefore, to understand a little knowledge of lithium batteries, grasp the proper use of lithium batteries is necessary.
First, the type of lithium battery:
Currently on the market used mainly nickel-metal hydride secondary batteries (Ni-MH) and lithium-ion (Li-ion) types. Lithium ion batteries are already in volume production of liquid lithium-ion battery (LiB) and lithium ion polymer battery (LiP) two. So in many cases, the battery mark the Li-ion must be the lithium-ion battery. But not necessarily liquid lithium-ion battery, is also possible that lithium-ion polymer battery Hp Pavilion dv8000 battery(Hp dv8000 battery), Hp HSTNN-DB20 battery, Hp 395789-001 battery, Hp 396008-001 battery, Hp Pavilion dv9000 battery(Hp dv9000 battery), Hp EV087AA battery, Hp EX942AA battery, Hp Pavilion ZT3000 battery.
Lithium ion battery is the improved product. Lithium batteries have a long time ago, but lithium is a highly active (remember it in the periodic table of the position?) Of metal, it is not safe when used often in charge when burning, burst case, then there will be a modified lithium-ion batteries, lithium element added to inhibit the active ingredients (such as cobalt, manganese, etc.) so that lithium truly achieve a safe, efficient, convenient, and the old lithium batteries also will basically eliminated. As to how to distinguish them from the battery of the label can identify lithium as Li, lithium-ion battery Li-ion. Now, laptops and mobile phones using the so-called “lithium batteries”, are in fact lithium ion battery.
The basic structure of modern batteries, including cathode, anode and electrolyte three elements. As a battery, lithium ion battery also has three elements. General lithium-ion technology uses liquid or inorganic colloidal electrolyte, requiring combustible solid shell to accommodate the active ingredients, which increases battery weight and cost, also limit the size and shape flexibility. In general, liquid lithium ion battery is the minimum thickness of 6mm, a further reduction is more difficult. The so-called polymer lithium-ion batteries are three main structures in the at least one or more use of polymer materials as its main battery system.
A new generation of polymer lithium-ion polymer battery in the extent of already very high, so the shape can be of thin (the thinnest 0.5 mm), of any size and any shape of greatly improved battery design and flexible modeling , so it can meet the demand for products, made of any shape and capacity of the battery. Meanwhile, the polymer lithium ion battery unit of energy than the current lithium ion batteries in general increased by 50%, of its capacity, charge and discharge characteristics, safety, operating temperature range, cycle life and environmental performance and so are relatively large lithium-ion battery rate of increase. Currently marketed in liquid lithium-ion (LiB) battery in the case of overcharging, and thus easily lead to rupture of the fire safety valve case, it is very dangerous, so the IC circuit protection must be installed to ensure that the battery will not happen over- charge of the case. The polymer lithium-ion batteries, the batteries of this type of liquid lithium-ion batteries in terms of relatively good resistance to charge and discharge characteristics, plus the external IC circuit protection requirements may be eased. In addition, in charge, the polymer lithium-ion battery can be charged using constant current IC with the lithium ion secondary battery used CCCV (Constant Currert-Constant Voltage) charging time required for comparison, can shorten the waiting time for many.
Second, mobile phone manufacturers the application of lithium batteries
Although almost all manufacturers have in recent years tend to use lithium-ion batteries, but the world’s major mobile phone manufacturers the choice or the battery has its own characteristics and habits, for example, had the same historical period:
Easy to see that the first choice for mobile phones from LiP polymer lithium-ion batteries on this issue, Ericsson demonstrated the true nature of their pioneering mobile phone technology. According to the information I find that the current major manufacturer of polymer lithium-ion batteries in Japan SONY, Panasonic, GS and so several companies, produced in 2000 reached 21 million, of which 50% of Ericsson mobile phone package. Into the 2002, lithium-ion battery cell phone in the other cell phone manufacturers also have been widely used and popular. However, the use of polymer lithium-ion batteries, but also far from all mobile phone manufacturers to get popularity of products, extensive application also remains to be seen. On the other hand, although the numerous advantages of lithium-ion batteries, but there are shortcomings, such as charge and discharge times of high prices and less so. Lithium battery charging and discharging of the number of only 400-600 times, specially modified products, but many times 800. The NiMH rechargeable battery can reach 700 times more than some quality products to charge and discharge up to 1,200 times, such a comparison, Ni-MH battery live longer than lithium batteries. In addition, prices for nickel-hydrogen batteries is much lower than the lithium batteries. Moreover, strictly speaking, lithium batteries have the same memory effect, but its very low memory effect, basically negligible. Hence, there is no perfect battery.
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