Little knowledge laptop batteries
Time : 2009/10/16 Hits : 929 Font : Small In Large [back]
Most electronic products research and development personnel believe that future mobile devices will be used mainly lithium battery-powered, so they will be the main focus of the battery R & D are concentrated in the lithium-related chemical experiments. At present the application of lithium-ion batteries have been better than the nickel-metal hydride batteries, and their scope of application is still expanding.
Although the lithium-ion battery technology is constantly improving, but now lithium-ion batteries are still immature. Every six months, researchers will be in the lithium-ion batteries on the introduction of new metals and chemical substances to improve energy storage density of batteries or extend battery life, but to extend the battery life must go through several years of experiments be aware of the new metals or chemical substances can be able to play a role.
Usually charge and discharge lithium-ion battery can be 300-500 times. More suitable for lithium-ion battery is not fully charged, not suitable for rechargeable battery completely exhausted, so frequent a full charge and discharge should be avoided. Although the lithium-ion batteries have no memory effect, but some lithium-ion batteries have been engineers called the existence of a number of memory problems, because the frequent short period of time the battery charging does not take full power, the battery's own power detection device (usually the laptop computer batteries have the device) will not completely filled according to the capacity to adjust. However, if after charging and discharging every 30 times, to conduct a complete charge and discharge, we can solve this problem. The best way is to let the battery has been used when the mobile device can not start to conduct a complete charge. If you ignore this, then the capacity of lithium-ion batteries also will be gradually reduced.
The aging of lithium-ion battery is also a user-friendly neglected. Lithium-ion battery life is usually 2-3 years, and the computing time from the lithium-ion battery production line from the moment out of date. With the oxidation of the battery, the battery capacity will be gradually reduced. When the battery capacity reduced to a certain point, the battery can no longer continue to be used, although it is the battery still be able to store a certain amount of power. Part of the laptop and cell phone batteries by adding a certain amount of cobalt to solve this problem.
Lithium-ion battery capacity and temperature, charge status is directly related to a higher temperature or high power lithium-ion battery will allow a permanent attenuation of power. Many users may find that the temperature rise when the battery power will be significantly improved, but when the temperature is restored, but it will affect battery life. Lithium-ion batteries in terms of volume attenuation is no way to recover after.
If possible, users should try to ensure that the battery when not in use, electricity at around 40%. The appropriate amount of power can guarantee the protection of the battery within the normal operation of the system to extend battery life. The greatest impact on battery life is that the battery is fully charged and in high-temperature environment, conservation, the most typical example is the battery on the phone or in a separate car. In the use of laptop computer users also need to pay attention, many users were accustomed to the battery on the laptop at the same time plug in the power house. This battery power has been maintained at 100%, while the work of Shi You will make notebook battery temperature exceeds 45 ° C.
I propose the use of laptop users to plug in the power laptop computers where the battery from the notebook out of the demolition. However, there are some laptop makers opposed to this approach, saying that the battery be removed and, after easily lead to dust or other debris into the notebook. JS is actually very happy that a lot of money in the collection of the cost of a new, after you replace the battery.
In the notebook without using up time, should try to unplug the power from your notebook. Although the lithium-ion battery will not charge excessive, but the plug in the power caused by heat, but the battery life will lead to decay.
Part of the lithium-ion rechargeable batteries because of frequent short-duration, resulting in the voltage of each batteries have been below 2.5V, then the battery's internal protection circuit will open, the battery would be no way to use. Now use normal charger there is no way to recharge it. Some battery analyzers for lithium-ion batteries can be an instant high pressure to re-activate the battery. However, if the voltage drops below 1.5V batteries and maintained for some time, it is best to do right piece of battery charging, this is very dangerous. In order to prevent that from happening, we recommend that users not in the lithium-ion battery is fully the case of no power to save, but should allow a certain degree of power within the battery, before being used again in the future is full of.
All the personal computers (including a number of other electronic devices) has a power-off state of the battery to ensure the maintenance of some of the data within the system. Usually the battery is a small, non-rechargeable lithium batteries. Such as personal computer BIOS settings, the current time and date, Plug and Play devices resource allocation, and so information is through the battery to maintain its data is not lost. Continuing to connect the host power supply case, the battery can usually use the 5-7 years time, and save the battery alone, then to maintain only about 1-2 years. If the piece of the battery power is used up, will lead to time and date, BIOS settings, and data loss. Because of this the battery is not charging, so users need to replace one.
Brief guide
1, to avoid frequent full charge and discharge, so that the battery is too easily lead to fatigue. Many times not fully charge and discharge than in a complete charge and discharge more conducive to extend the life of lithium-ion battery. As the lithium-ion battery itself does not have the memory effect and therefore do not fully charge and discharge will not result in reduced battery capacity. Laptop battery life is too short mainly because of the battery working conditions at higher temperatures.
2, part of the lithium-ion battery has an internal battery capacity detect circuit, it is best able to not fully charge and discharge 30 times after a full charge and discharge. If you ignore this, the battery detection circuit will be considered within the capacity of the battery has been reduced, and subsequently adjusted accordingly.
3, try to make lithium-ion batteries stored in the cooler environment. In order to extend the service life of lithium-ion battery, do not use the battery when the battery should be maintained at about 40% of the electricity.
4, when used in a notebook then the power will be removed and the battery. (Although some notebook manufacturers do not recommend users to demolish the battery in order to avoid dust or other debris into the laptop inside.)
5, try not to buy lithium-ion batteries in advance, it should be used only when needed to buy. Also in the time of purchase to pay attention to the battery production date, production date earlier not to buy batteries, although they may be discounted.
6, if you have the extra lithium-ion battery, it is best stored in the refrigerator so the battery cooler location, but needs attention, do not freeze the battery. Also save the battery should be kept inside for about 40% of the electricity.