Polymer lithium battery charging steps and precautions
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2023/12/21 14:46:57
What are the charging steps and precautions for rechargeable lithium batteries? Lithium battery can be recharged multiple times, easy to use. But right
Not everyone can be familiar with the lithium battery charging method So, for the new lithium battery, how to charge correctly, need to pay attention to what
What do you think? Below to you sort out the commonly used 3C digital lithium battery charging method, of course, know why but also know why, lithium
The correct use of the pool is inseparable from the understanding of the charge and discharge process of lithium batteries. The lithium-ion battery charging process can be divided into four stages: trickling
Current charging, constant current charging, constant voltage charging and charging termination.
1, trickle charging stage: trickle charging means that the fully discharged lithium battery is pre-charged (restorative charging), in the battery electricity
When it is low to about 3V (minimum 2.75V), the lithium battery is charged with 0.1C (battery capacity x0.1) constant current.
2. Constant current charging stage: When the voltage of the lithium battery is charged above the trickle charging threshold, the charging current is increased for constant current charging.
The current is between 0.2C and 1.0C (the general standard is 0.2C). The current of constant current charging is not required to be very precise and quasi-constant
A constant current will also work. In a linear charger design, the current is constant
3, constant voltage charging stage: When the lithium battery voltage rises to 4.2V, the constant current charging automatically ends and the constant voltage charging stage begins. So that
To achieve the best performance, the voltage tolerance should be better than +1%.
4, charging termination stage: lithium batteries and nickel batteries are different, it is not recommended to lithium-ion batteries for a long period of continuous trickle charging.
As the battery voltage rises, it rises to minimize heat dissipation on the transmission transistor. Most of the current consumer electricity
The chargers equipped with sub-products are charged within 1C, and constant current charging greater than 1C is not advisable. When at a higher current
When charging, the battery voltage rises more rapidly due to the overvoltage of the electrode reaction and the voltage rise on the internal resistance value of the lithium battery.
The constant current charging phase will be shorter, but because the time of the following constant voltage charging phase will increase correspondingly, the total charging cycle time will not be equal
It won't shorten.
Continuous trickle charging for a long time will lead to the effect of metal lithium plate plating. This makes the battery unstable and can cause sudden changes
The automatic rapid disintegration. Whether lithium batteries are used or not, the shelf life is generally 1 year shelf life, and the number of cycles is 500 times
The general lithium battery life standard is that the capacity is greater than 80% of the initial capacity after 500 cycles. Lithium battery in addition to fear
Low power, but also afraid of overheating (the charging temperature is best maintained between 0 degrees -45 degrees), if the lithium battery is charged
The heating temperature is too high, it is best to stop charging.
Lithium battery charging considerations are roughly the following:
1, polymer lithium battery charging, to choose the original charger, because the original charger charging current is the most for the product charging
Good current design.
2, polymer lithium battery charging is best to 0.2C standard current charging, try to avoid fast charging, repeated charge and discharge will also affect polymerization
Life of lithium battery.
3, the polymer lithium battery has a self-discharge phenomenon (all batteries have self-consumption), a long time does not use the need for two or three months to recharge
Second, semi-electric storage.
4. The polymer lithium battery should be stopped immediately after being charged, otherwise the polymer lithium battery will affect the battery performance due to heat or overheating.
Polymer lithium battery charging steps and precautions are roughly the above content, if there is insufficient follow-up supplement!
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