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18650 rechargeable battery lithium 3.7v 3500mah
18650 rechargeable battery lithium 3.7v 3500mah

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AG11 battery.What is battery fast charging technology

release time:2023-10-20 Hits:     Popular:AG11 battery

  

  At present, oil and other fuel resources are gradually depleting. In order to cope with the shortage of these fuel resources, all walks of life have begun to look for corresponding alternative energy sources. The automotive industry is naturally no exception. New energy electric vehicles have emerged under this situation. But in the face of new energy electric vehicles that have just emerged, everyone is most concerned about their battery problems, and they still don’t quite understand the emerging battery fast charging technology. What exactly is it? How to fully charge the battery in a short time? Generally speaking, most electric vehicles use ordinary charging technology. This ordinary charging method takes 8 to 10 hours to charge an electric vehicle, while fast charging means fast charging. It only takes 1 hour to fully charge the battery. . To simplify the concept, it actually uses high-current and high-power DC to charge the battery. The real principle is that in the fast charging state, the lithium ions in the lithium battery move at high speed and are instantly embedded into the two poles of the battery. The implementation method is to first use a wider charging pulse to charge the battery to increase the terminal voltage of the lithium battery. When the charging time limit set by the charging system is reached, the charging system cuts off the power supply current to suspend charging of the battery. Then when the interval reaches When another charging point is reached, the charging is restarted and the process is repeated. When all the lithium ions inside the battery are gathered on the positive and negative electrodes of the battery, the car battery is quickly fully charged. Therefore, this fast charging technology has high requirements on the battery itself. The battery itself must have an automatic management system, and at the same time, it must have very reliable thermal stability and withstand high voltage and large current. But the above are only the battery requirements for fast charging. To achieve this kind of fast charging, you must also have a matching charging system. Many cities now provide fast charging charging piles with powers as high as 20KW and above, which can convert 10KV high-voltage AC power. It is converted into hundreds of amps of direct current and continuously delivered to the car battery system through special cables. However, given that the current battery pack balancing technology, power transmission and distribution technology, and especially heat dissipation technology do not meet the requirements, true fast charging cannot be fully realized, but compared with ordinary charging technology, the charging time has been greatly shortened. The most important thing is this fast charging technology. From the principle, it can be seen that fast charging will not seriously consume the battery and sacrifice the service life of the battery as rumored. In general, in order to achieve fast charging, in addition to a dedicated battery system to ensure the conditions for rapid movement of internal electronics and automatic charging management, a special external charging system is also required to provide the battery system with Providing the required large current, it can be seen that the principle of battery fast charging is not that complicated.


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