Why is there a smart battery for drones?

Regarding secondary batteries, overdischarge is the most annoying thing. Over-discharge means that the performance of the battery will decline or even be scrapped. In order to prevent over-discharge, an over-discharge protection circuit was added to the battery pack. When the discharge voltage drops to a preset voltage value, the battery stops supplying power. However, if the drone flying in the sky is powered off, there will be a direct crash risk. Therefore, the discharge cut-off of the smart battery is only the last line of defense for battery self-protection. Before that, the management circuit must calculate the end life time. Provide users with early warning so that users have enough time to take corresponding safety measures. At present, a large number of lithium-ion battery packs adopt the form of multi-cell series and parallel. Due to the individual differences of the cells, it is impossible to achieve 100% balance between charging and discharging. Therefore, a complete set of charging management circuit is particularly necessary. And this is the second function that a smart lithium-ion battery must have to complete the charge management and discharge management of the lithium-ion battery pack. Traditional batteries need to test the voltage, and additional test devices, such as voltmeters, must be connected, and this type of test cannot be performed in real time during the flight. Is there a more convenient and intuitive way to let users know the real-time remaining battery power and other information? Yes, this is done by the battery management circuit. Maybe you still have the impression that when we connected the battery to the drone, sparks came out from the plug and accompanied by the sound of fire. Over time, the reliability of the plug connection will be reduced, which will cause the plug to heat up and even melt in the air. It is not uncommon for drones to crash due to aging plugs. In order to solve this problem, the intelligent management circuit of lithium-ion battery has to be used again. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How does the inconsistency of the battery cause it?