With 3G networks in the accelerated process of global business, 3G users also appeared to grow substantially. Technically advanced enterprises 3G has a unique appeal, prompting users more often use a variety of multimedia services. Short period of 10 years, only to have a phone call from cells of all functions to be transformed into a variety of functions in one portable device. At the same time, the battery of mobile phones has grown complex and changes.

Early in the era of analog phones, batteries account for almost half the weight of the cell body also totaled 2 / 3 ratio. This undoubtedly affected the portability of cell phones. At that time, the batteries of mobile phones can be divided into three types: batteries nickel cadmium, nickel metal hydride and lithium-ion batteries, IBM ThinkPad T43 battery  IBM ThinkPad T60 battery.

Nickel-cadmium battery is composed of two plates, one with nickel hardware, and other materials system with cadmium, these two metals in batteries can produce reversible reaction, so that the battery can be recharged. Its greatest feature is firm, and talks long. The first “Big Brother” is the use of nickel-cadmium batteries.

Also known as green nickel-metal hydride batteries, because it contains no metal cadmium, do not pollute the environment. Its power reserve of more than nickel cadmium batteries for more than 30% to 50% of talk time and mobile phone can be extended by 30%.

Lithium-ion battery is a battery of high energy density, which, with the same size nickel-cadmium batteries, the batteries in nickel metal hydride over a larger reserve of power, lighter weight. Lithium-ion battery or a smart battery, it can be a smart charger dedicated to “speak” to achieve the shortest charging times and the highest cycle life and Dell Inspiron 8600 battery  Dell Inspiron 9200 battery capacity.

While mobile phones and small light weight to improve the performance of the development trend of mobile phone battery nickel-cadmium batteries of the transition at the beginning of the main phase of nickel metal hydride-based. With the rapid decline in the cost of lithium batteries, mainstream mobile phones currently on the market have been primarily using lithium-ion battery. Because the lithium Slim secondly, because the lithium batteries have greater capacity, greater density of power output, load faster.

In 2003, the use of lithium up to 90% (about 650 million group of demand) in 2004 increased to 94% (about 758 million group calls). Because there is no strong threat to short-term substitutes, if 2 ~ 3 years, lithium batteries can still maintain its edge in the market for mobile telephony is expected to 2005, the rate of ‘use will increase to 98%.

2, cell phone lithium battery of technological change

Lithium F3172A PB995A batteries for mobile phones mainly in liquid-based lithium-ion batteries, the recent development of lithium-ion cell phone battery should be around two main aspects:

First, the traditional liquid lithium-ion battery materials in positive and negative electrodes, electrolyte improvements. The increasing diversity of functions of mobile phone battery performance right to advance higher standards, has developed a new battery electrode materials will in future lithium-makers ion batteries for some time being competition. Currently, Japan Sanyo, and Sony took advantage of Ni, Co, Mn 3-component materials to produce high-capacity battery 4.4V, while the cathode active material Li (NiCoMn) 1/3O2 Honjo, at Japan, the company was sold, the cost of these materials LiCoO2 is approximately about half, therefore, their application will lithium batteries, especially lithium-Powered Battery to reduce the price of a degree.

Secondly, polymer lithium-ion batteries in cell phones will gradually increase the proportion of applications and will gradually replace the traditional Li-ion batteries, but before the launch of 3G, it is difficult for traditional lithium-ion batteries provide a threat.

Because lithium high energy density-ion battery, the overload condition, the increase in battery temperature, the excess energy, the PA3191U-3BRS PA3285U-2BRS battery internal pressure increases the risk of spontaneous combustion or explosion. Lithium batteries are generally liquid steel or aluminum for packaging, the battery of huge explosions.

In traditional liquid lithium-ion batteries lithium polymer developed from the battery (hereinafter referred to as poly-lithium battery), just be able to catch the performance of non traditional lithium batteries. Firstly, thank you film composite aluminum flexible packaging, as opposed to the hard shell packaging in terms of conventional lithium batteries, is not easy to explode, with more security. Secondly, poly-lithium batteries are lighter, thinner and higher capacity. Thirdly, in principle, poly-lithium battery can be designed in any shape, for cell phones and other mobile devices designed to provide excellent condition. Fourthly, the poly-electrolyte lithium battery using the gel or similar solid material, does not leak, thus reducing pollution.

This polymer lithium-ion battery energy density and load-discharge time, with lithium batteries traditional liquid are basically the same, its benefits are mainly reflected in the size and shape can be arbitrary. Poly-lithium batteries is difficult because of performance and price of ordinary lithium batteries caused by strong shocks, the current poly-lithium batteries accounted for 12% ~ 13% market share. However, as manufacturers continue to join, the price of lithium-polymer continues to decline, polymer lithium-ion battery in the current lithium-ion battery is a matter of time.