Anti-mutual-charging circuit and method for supplying power to multiple battery packs of four-rotor aircraft

Abstract

The invention discloses an anti-mutual-charging circuit and method for supplying power to multiple battery packs of a four-rotor aircraft. The anti-mutual-charging protection circuit is arranged between the battery pack and the four-rotor aircraft avionics equipment, the battery pack is located at the front end of the anti-mutual-charging protection circuit, the four-rotor aircraft avionics equipment is arranged at the rear end of the anti-mutual-charging protection circuit, and the battery pack is rectified and converged through the anti-mutual-charging protection circuit and then output to electric equipment for power supply. The four-rotor aircraft has the beneficial effects that the modular design thought is adopted, the circuit is simple and reliable, the safety of the four-rotor aircraft is improved, and miniaturization of the circuit is achieved; and the voltage working range of the anti-mutual-charging protection circuit is wide. When the voltages of the N battery packs are inconsistent, the anti-mutual-charging protection circuit corresponding to the low-voltage battery pack automatically switches off Q1, so that the purpose of protecting the battery pack and electric equipment is achieved; the withstand voltage value, the internal resistance and the overcurrent capability are comprehensively considered, the energy loss is reduced, and the driving current capability isimproved.

Description

technical field [0001] The invention relates to an anti-mutual charging circuit and method for power supply of multiple battery packs of quadrotor aircraft, which can be widely used in power supply of multiple battery packs of quadrotor aircraft. Background technique [0002] At present, the quadrotor aircraft is powered by a DC power supply. In order to improve the flight time of the aircraft, multiple battery packs are generally used in parallel. When multiple battery packs are connected in parallel for power supply, if there is a voltage difference between the battery packs, the high-voltage battery pack module will charge the low-voltage battery pack. This charging has the following disadvantages: [0003] 1. It affects the normal power supply of the battery pack to the quadrotor electrical equipment. When the quadrotor aircraft is working, the power required for the rotation of the four-way motor is very high. If the battery pack cannot supply power normally, the four-w...

AI Technical Summary

Problems solved by technology

[0003] 1. It affects the normal power supply of the battery pack to the quadrotor electrical equipment. When the quadrotor aircraft is working, the power required for the rotation of the four-way motor is very high. If the battery pack cannot supply power normally, the four-way motor cannot output normal power. Cause the quadrotor to not work properly;

[0004] 2. The battery packs charge each other, and the charging current generally reaches the maximum discharge current of the battery. The container will cause the electrical connector between the battery and the on-board electrical equipment to burn, causing danger. At the same time, the long-term high-current discharge of the battery will reduce the work of the battery. life

[0007] 1. Schottky diodes have limited overcurrent capability and cannot meet the requirements of high current use;

[0008] 2. The energy loss of the Schottky diode is high, which has an impact on the endurance of the quadrotor aircraft

[0009] 3. In the case of multiple battery packs, the quadrotor aircraft can generally last for more than 40 minutes. Therefore, the Schottky diode is easy to heat up and the device is easy to be damaged after long-term work, which threatens flight safety.

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