The average number of charge and discharge times is 500. The lifespan of a lithium battery is 500 charge cycles. For example: a lithium battery only uses half its power on the first day and then fully charges. If it is still the same the next day, that is, charge it after half use, and after a total of 1 charge, it can only be counted as one charging cycle. The battery capacity will be reduced a little, but the power reduction is very small. If the battery is of good quality and high quality, the battery will still retain 80% of its original capacity after several cycles. be used after two or three years of normal use. But then again, products ultimately have a lifespan and lithium batteries also need to be replaced. The so-called 500 times means that the manufacturer has achieved 625 recharges at a constant depth of discharge of 80%, achievinglasting 500 charge cycles. Another calculation will make it clearer: 625×80%=500 (ignoring factors such as the reduction in lithium battery capacity). In practice, due to various life influences, including the depth of discharge during charging is not constant.
Can ternary lithium batteries be charged quickly?
It is best to charge the lithium battery of electric vehicles with about 20% remaining. Do not fully charge it after using it. , you can charge it when there are about 20 left, don't charge it completely, more than 80 is enough.
The lifespan of lithium batteries is limited, that is, the number of times they can be charged is limited. Lithium batteries can generally be charged and discharged about 500 times. Do not start charging until they are completely empty. , and you don'tAlso do not charge until it is fully charged to 100%. The lifespan of lithium battery is about 500 charges and discharges, which does not refer to the number of charges, but the number of charge and discharge cycles.
To put it simply, you start charging when there is 50% left after the first use. After charging, you always start charging with 50% remaining. This can only be counted as one charge and discharge cycle (this explanation is of course not valid. This means that it can be used indefinitely if not used every time. We can only say that the cycle is extended and the duration of use is longer).
Detailed information:
I think most consumers have heard that the life of a lithium battery is “500 times longereure”. In order to extend the life of the battery, it is necessary to recharge it every time. the battery is completely exhausted. Does recharging really extend battery life? the answer is negative. The lifespan of a lithium battery is "500 times", which does not refer to the number of charges, but to one cycle of charging and discharging.
A charge cycle means that all of the battery's energy is used from full to empty, then charged from empty to full. This is not the same as a single charge. For example, a lithium battery only uses half its power the first day, then it is fully charged. If it is still the same the next day, i.e. if you charge it half and charge it twice in total, this can only be counted as one charging cycle and not two.
Therefore, it can usually take severalA single charge to complete a cyclee. Each time a charge cycle is completed, the battery capacity decreases a little. However, this power reduction is very small. High quality batteries retain 80% of their original capacity after being charged several times. Many lithium-ion powered products are still in use after two or three years. Of course, lithium batteries still need to be replaced once their lifespan is reached.
The so-called 500 times means that the manufacturer has achieved approximately 625 times of charging at a constant discharge depth (e.g. 80%), reaching 500 charge cycles.
(80%*625=500) (ignoring factors such as lithium battery capacity reduction)
Due to various influences in real life, especially the depth of discharge during charging is not constant, so "500 charging cycles" can only be used as a reference for the life of the battery.battery.
Reference materials:
Pacific Automotive Network's ternary lithium battery can be charged quickly Before charging, the lithium-ion battery does not need to be specially discharged. Improper discharge will damage the battery. When charging, try to charge slowly and reduce fast charging; the time should not exceed 24 hours. Only after the battery has undergone three to five complete charge and discharge cycles will all the chemicals it contains be “activated” to achieve optimal usage.
How to charge the ternary lithium battery
1. Use the corresponding charger to fully charge the ternary lithium battery for one hour.
2. Unload until about 20 c/o remains, then reload. Excessive discharge will damage the batteryternary lithium series.
3. When charging the ternary lithium battery, try to fully charge it at one time.
In fact, surface discharge and surface charge are more beneficial for lithium batteries. Deep discharge and deep charge are only necessary when the product's power module is calibrated for lithium batteries. 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.
Generally speaking, imported ternary lithium batteries can be charged and discharged about 3,000 times, while domestic batteries can be charged and discharged about 800 to 1,000 times. Ternary materials have advantages in terms of specific energy, specific powere, high charge and low temperature performance of lithium batteries. In terms of cycle performance, lithium iron phosphate materials also have obvious safety advantages. better than ternary materials.
The correct charging method for ternary lithium batteries
1. Before lithium-ion batteries leave the factory, manufacturers have carried out activation and pre-charging, so ternary lithium batteries are all The lithium-ion battery is charged according to the setting period. This adjustment period requires 3 to 5 complete charges and discharges.
Method
2. Lithium-ion batteries do not need to be specially discharged before charging. Improper discharge will damage the battery. When charging, try to charge slowly and reduce fast charging; the time should not exceed 24 hours. The battery has been fully charged and dischargedeed three to five timesOnly after circulation, all the chemical substances contained in it will be "activated" to achieve the best use effect.
Method
3. Please use the charger from the original manufacturer or a reputable brand. For lithium batteries, use a special charger for lithium batteries and follow the instructions, otherwise the battery will break. be damaged or even dangerous.
Method
4. For newly purchased ternary lithium batteries, the first 3-5 charges are generally called the adjustment period and should be charged for more than 14 hours to ensure complete activation of lithium ion activity. Lithium-ion batteries do not have a memory effect, but have high inertia. They must be fully enabled to ensure optimal performance for future use.
Method
5. The ternary lithium battery must use a chaotherwise it may not reach saturation and affect its performance. After charging, avoid leaving it on the charger for more than 12 hours, and separate the battery from mobile electronic products when not in use for a long time.
The optimal charging current for ternary lithium batteries is 0.37 C of the battery capacity, or 0.37 times the capacity. For a 64Ah battery, the charging current is about 23A. If it is too large, the charging speed will be fast and the effect will be poor. After charging, the battery voltage will drop quickly.
(Images/Text/Photos: Pacific Automotive Network Calling the Beast Q&A)