202054星期一 100059

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Lithium polymer battery maintenance

scanning:115 author: from: time:2019-07-01 classify:Battery project

Use of lithium polymer batteries:


The battery must be charged and discharged in the correct way to achieve the longest life and good performance.


Although the lithium-ion battery has a protection circuit inside, it can limit overcharge or over-discharge to a certain extent, avoiding abnormal phenomena such as battery expansion and leakage, but it is necessary to pay attention not to over-discharge the lithium-ion battery. Over-discharge of the battery can cause internal damage to the battery and reduce its performance. Under normal conditions of use, the charge and discharge cycle life of a lithium-ion battery can reach 500 times, which means that after 500 times, the capacity is still more than 80% of the original capacity. The lithium battery is preferably shallow and shallow, and the correct and correct use will be Its cycle life is more than 1000 times, which greatly extends the battery life.


Lithium batteries are inevitably aging from the factory, and they have a certain natural discharge rate. If they are not used at all, about 1% of the electricity will be released every day. Therefore, lithium batteries will appear one year later, regardless of whether they are used or not. A certain degree of irreversible capacity attenuation, usually after 2 to 3 years, can hardly be used anymore, so try not to store it for a long time, and use it now. At extreme temperatures, battery performance is degraded and extra care must be taken.


Lithium-ion batteries have no memory effect, and do not need to be forced to discharge before each charge. As long as the battery capacity is used up, it can be charged at any time, saving energy without wasting a cycle life of the battery.


In daily use, the battery that has just been charged should be put on hold for half an hour, and then used after the electrical performance is stable, otherwise it will affect the battery performance.


Maintenance of lithium polymer batteries:


1. Before the lithium battery leaves the factory, the manufacturer performs activation processing and pre-charges. Therefore, the battery has residual power. The first 3~5 times charging is called the adjustment period, and should be charged for more than 14 hours to ensure the full activation of lithium ion activity. Lithium-ion batteries have no memory effect, but they are highly sturdy and should be fully activated to ensure optimal performance in future use.

2. Before charging, the lithium battery does not need to be discharged or discharged. The current lithium battery charger has no discharge function. If you can adjust the charging speed, it is recommended that you charge the battery as slowly as possible. Fast charging mode; no matter whether it is slow charging or fast charging, do not exceed 24 hours. Otherwise, the battery is likely to burn out the battery due to a large amount of electron flow generated by long-term power supply.

3. The life of the battery is determined by the number of repeated charge and discharge cycles. The lithium battery can be charged and discharged continuously for about 500 times. After that, the performance of the battery will be greatly reduced. Try to avoid all the remaining power in the battery and recharge it. Otherwise, the number of times of charging will be charged. As the battery increases, the battery performance will be slowed down and the battery standby time will be short.

4, do not expose the battery to high temperature or cold, like a three-day, should not put the mobile product under the sun, to withstand the sun; or get it in the air-conditioned room, put it in the cold air, when charging, It is normal for the current product to reflow and the battery to have a little heat.

5, charging is not as long as possible, the battery should be stopped after the battery is not fully protected, otherwise it will affect performance due to heat or overheating. The method of calculating the theoretical charging time of the battery is as follows: the battery power is divided by the output current of the charger. For example, taking a battery with a power of 800MAH as an example, the output current of the charger is 500MA, then the charging time is equal to 800MAH/500MA. =1.6 hours, of course, this is only the theoretical full-charge time calculation. When the charger shows that the charging is completed, it is better to give the battery about half an hour of recharge time. Lithium-ion batteries must use a dedicated charger, otherwise they may not reach saturation and affect their performance.


In short, there is no official and correct statement on the charging and maintenance of the battery. The correct use and maintenance is the key to prolonging the battery use problem. Only when combined with the characteristics of the battery used by our company, combined with the battery charging and discharging time in actual operation. A specific and effective method of using the battery is developed for the specific impact of the aircraft operation.