NOVEMBER 6TH, 2009
By ADMIN
At present the majority of laptop batteries are based on industry-standard batteries, generally divided into cylindrical and square.
Cylindrical-shaped batteries are bigger than AAA batteries, while the square batteries are roughly equivalent to the size of a Zippo lighter.
The current capacity of the mainstream batteries: cylindrical for the 3.6 ~ 3.7V/2000 ~ 2200mAh, square for the 3.6 ~ 3.7V/1800 ~ 2000mAh, so the Laptop battery in the end used how many batteries can be inferred according to the above figures, such as the IBM ThinkPad T40/T41 standard battery is 10.8V/4400mAh, then the number of batteries is 6, three-string, and two parallel, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two sets of series after the batteries in parallel and then get 2 x 2200mAh = 4400mAh.
The IBM ThinkPad T40/T41 enlarge battery is 10.8/6600mAh, then the batteries number is 9, using a three-string, and three parallel way, namely: the three energy-saving core series to be 3 X 3.6V = 10.8V, the two groups after the batteries in series and then parallel to be 3 x 2200mAh = 6600mAh.
Generally speaking, the difference between the enlarge battery and standard battery is that an increase of the number of batteries connected in parallel to increase capacity.
FEBRUARY 17TH, 2009
By ADMIN
Lithium-ion battery security features
Lithium-ion dell laptop battery has been very widely used in people’s daily lives, so it should definitely be the safety performance of lithium-ion batteries are the first assessment indicators. For lithium-ion battery safety performance assessment indicators, the international community provides for very strict standards, a qualified Li-ion batteries in the safety performance should meet the following conditions.
(1) Short Circuit: No fire, not explosion
(2) Overcharge: No fire, not explosion
(3) hot box test: no fire, not explosion (150 ℃ thermostat 10min)
(4) needle puncture: No explosion (Ф3mm nail penetration with batteries)
(5) the impact of flat-panel: no fire, not explosion (10kg weights since 1M height batteries)
(6) burning: No explosion (gas flame barbecue batteries)
Lithium-ion latitude d510 battery safety features are how to achieve the?
Lithium-ion batteries in order to ensure safe and reliable use, the experts had a very strict and careful design of the battery safety in order to achieve security assessment battery indicator.
(1) divide 135 ℃ Automatic shutdown protection
Adopting international advanced Celgard2300PE-PP-PE three-tier composite membrane. The battery temperature reached 120 ℃, the composite membrane on both sides of the PE film hole closed, the battery internal resistance increases, the battery internal temperature down, the battery temperature reached 135 ℃, when, PP film hole closed, the battery internal circuit, the battery is no longer warming, to ensure safe and reliable latitude d520 battery.
(2) add to the electric fluid additives
Overcharge the battery, the battery voltage higher than 4.2V under the conditions of electric and electro-hydraulic fluid additives in other polymeric material, the battery internal resistance of mates increased, the formation of large area internal battery circuit, the battery is no longer warming.
(3) the battery cover composite structure
The battery cover the use of explosion-proof structure notch, battery temperature, the battery internal activation generated by the process part of the gas expansion, the battery internal pressure increased, the pressure reaches a certain degree of notch rupture deflated.
(4) a variety of environmental abuse trial
For the misuse of tests, such as external short circuit, overcharge, acupuncture, flat shock, burning and so on, examining the safety performance of the battery. At the same time, the battery temperature shock test and vibration, drops, shocks and other mechanical properties test, inspect the battery in the actual use of environmental performance under the circumstances.
Lithium-ion latitude d600 battery are a new type of green environmental protection battery
“Care for the environment, the protection of the Earth” is our bounden duty of every individual. How the U.S. environmental philosophy reflected in the action then?
As a battery consumers should buy, the use of new green battery; as the battery manufacturers should be the production of new green battery. Only through the concerted efforts of everyone to create, protect our natural beauty and harmony.
New type of battery is the green environmental protection in recent years have been put into use or are being developed for a class of high-performance, non-polluting batteries. Has been substantial use of lithium-ion batteries, nickel metal hydride batteries and are promoting the use of mercury-free alkaline manganese dioxide batteries are being developed, as well as lithium or lithium ion plastic batteries, fuel cells, electrochemical energy storage supercapacitor are new green areas of the dell 312-0068. In addition, the current has been widely applied to the use of solar photovoltaic conversion of solar cells (also known as photovoltaic power generation), also fall into this category.
