How can we use lithium batteries

How can we use lithium batteries?

With the rapid development of portableproducts, the consumption of different batteries has increased significantlyand many new types of batteries have been developed. In addition to thewell-known high-performance alkali batteries, rechargeable nickel cadmiumbatteries and nickel hydrogen batteries, lithiumbatteries have also been developed in recent years. The lithium battery has a spiral-wrapped structure anduses a very fine and highly permeable polyethylene foil separator to separatethe positive and negative electrodes.

What factors influence the lifetime of lithium batteries?

What effect does it have on the battery ifthe lithium battery is fully charged for alonger period of time?

How can the safety of lithium batteries be ensured?

What factors influence the lifetime of lithium batteries?

1. Overloading, deep loading and largeloading and unloading current

Avoid overloading the lithium battery. Any form of overload of the lithium battery can seriously impair battery powerand even explode.

Avoid a depth charge under 2V or 2.5V, asthis will damage the lithium battery quicklyand permanently. There may be internal metallisation which may cause a shortcircuit, rendering the battery unusable or uncertain.

Most lithiumbatteries have an electronic circuit in the battery pack. If the batteryvoltage is lower than 2,5 V, 4,3 V exceeds during charging or discharge or ifthe battery current exceeds a predetermined threshold, the electronic circuitdisconnects the battery.

Avoid large loading and unloading currentsas large currents overload the battery.

2. Too hot or cold environment

The temperature also has a greaterinfluence on the life of lithium batteries.An environment below the freezing point can cause the lithiumbattery to burn when the electronic product is switched on, and theoverheated environment reduces the battery capacity. Thus, if the notebook isused for a longer period without removing the battery from an external powersource, the battery will be suspended for a longer period of time from the highheat output of the notebook and will soon be destroyed.

What effect does it have on the battery ifthe lithium battery is fully charged for alonger period of time?

Too high and too low performance conditionshave a detrimental effect on the life of lithiumbatteries. The number of rechargeable cycles indicated on most of thedevices or batteries sold is based on 80% discharge as a comparative test.Experiments show that for some laptop lithiumbatteries the battery voltage often exceeds the standard voltage by 0,1Volt, i.e. from 4,1 Volt to 4,2 Volt, then the battery life is halved, and ifit is increased by 0,1 Volt, the life span is reduced to the original 1 /3; Themore fully charged the battery, the greater the loss of the battery. Thelong-term condition with little or no power means that the internal resistanceof the battery to the movement of electrons increases, thus reducing thebattery capacity. lithium batteries are bestin medium performance, in this case the battery life is longest.

How can the safety of lithium batteries be ensured?

In order to avoid a low charge or overloadof the battery by improper use, a three-fold protection mechanism is provided inthe individual lithium battery cell. One isthe use of switching elements. If the temperature in the battery increases,your resistance increases. If the temperature is too high, the power supplystops automatically; the other is the selection of the appropriate separatormaterial. When the temperature rises to a certain value, the microprocessors onthe separator dissolve automatically so that lithium ions cannot pass and theinternal reaction of the lithium batterystops; The third is to adjust a safety valve. At the time that internalpressure of the lithium battery increases toa certain value, the safety valve opens automatically to ensure the safety ofthe battery.

Sometimes, although the lithium battery itself has safety controls, butfor certain reasons the control fails, a safety valve is missing or the gas isreleased too late by the safety valve, and the internal pressure of the lithium battery will increase sharply and then itwill cause an explosion.

Under normal circumstances, the totalenergy stored by a lithium battery isinversely proportional to its safety. As the battery capacity increases, thebattery volume increases, its heat output deteriorates and the likelihood ofaccidents increases sharply. In the case of lithiumbatteries for mobile phones, the basic requirement is that theprobability of a safety accident should be less than one to one million, whichis also the lowest acceptable to the public.

For high-capacity lithium batteries, inparticular high-capacity lithiumbatteries, used in cars, it is particularly important to use aforced heat discharge.

After reading, do you have a deeperunderstanding of lithium battery? Forfurther information, please contact GuangDong Sunray Power CO.,LTD