To determine which type of lithium battery, the charging temperature of the positive electrode material of the lithium battery is also different. The charging and discharging temperature requirements of lithium cobalt oxide positive electrode are relatively wider, from -20 degrees to 55 degrees. it's not a big problem. The best charging temperature for lithium iron phosphate cathode is 5 to 55 degrees, and the discharge temperature can be -20 degrees to 60 degrees.
The correct charging method for lithium batteries
The temperature range is -20 to 50 ℃
Mobile phones are equipped with protective devices when they leave. factory, and several protections are available. Protect the circuit to avoid overloading and overheating. For example, the vent can prevent excessive pressure inside the battery and the separator can prevent short circuits internal.
The main reason cell phones explode is directly related to cell phone batteries. Most cell phones these days use lithium batteries, which primarily rely on lithium ions to move between positive and negative electrodes.
Detailed information:
To charge lithium-ion batteries, a dedicated lithium-ion battery charger must be used. Charging the lithium-ion battery adopts the “constant current/constant voltage” method. Constant current charging is carried out first, and when the terminal voltage is close to the final voltage, it is replaced by constant voltage charging. For example, a battery with a capacity of 800 mA.h has an end-of-charge voltage of 4.2 V.
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Avoid charging at too high temperatures
If the temperature is higher than the specified When using lithium batteries at operating temperatures above 35°C, the Battery power will continue to decrease, which means that the duration of aliBattery life will not take as long as usual. If the device is charged at such temperatures, the damage to the battery will be greater. Even storing batteries in a hot environment will inevitably cause corresponding damage to the quality of the battery. Therefore, trying to maintain a proper operating temperature is a good way to extend the life of lithium batteries.
Avoid charging at too low temperatures
If you use lithium batteries in low temperature environments, i.e. below 4°C, You will also find that battery life is reduced. cell phones have original lithium batteries that cannot even be charged in low temperature environments. But don't worry too much, this is only a temporary situation, different from using in environmentshigh temperature conditions. Once the temperature rises and the battery molecules are heated, the battery immediately returns to its previous capacity.
Frequent use
If you want to maximize the performance of a lithium-ion battery, you should use it frequently to keep the electrons in the lithium battery in a flow state . If you do not use lithium batteries frequently, remember to cycle the lithium battery every month and perform power calibration, that is, deep discharge and a deep load.
Detailed information:
The lifespan of lithium batteries is generally 300 at 500 charge cycles. . Assuming that the power provided by a full discharge is 1Q, if the power reduction after each charge cycle is not taken into account, the lithium battery mayprovide or supplement a total of 300Q to 500Q of power over its lifespan. From this we know that if you charge 1/2 each time, you can charge it 600-1000 times; if you charge it 1/3 each time, you can charge it 900-1500 times. By analogy, if it is charged randomly, the number of times is uncertain. In short, no matter how you charge it, the total amount of electricity added is 300Q to 500Q, which is constant.
So we can also understand this: the lifespan of a lithium battery is related to the total charging capacity of the battery, and has nothing to do with the number of charging times . There is little difference in the impact of deep discharge, deep charge and shallow discharge on the life of lithium batteries. Well, some MP3 manufacturers claim in their propaganda: "A certain model of MP3 uses a powerful lithium battery thatcan be recharged over 1,500 times. » This is only to deceive consumers and lead them to ignorance.
In fact, surface discharge and surface charge are more beneficial for lithium batteries. Only when the product power module is calibrated for lithium batteries is it necessary to deeply discharge and charge. Therefore, products powered by lithium batteries do not necessarily have to stick to the process. Everything is done with convenience in mind. You can charge them at any time without worrying about affecting their lifespan.