Unmanned aerial vehicle and battery temperature control system and method thereof

Abstract

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle and a battery temperature control system and method thereof. The temperature of a battery module under the working state of the unmanned aerial vehicle is monitored in real time, and the flow direction and the airflow intensity of the internal heat dissipation airflow ofthe unmanned aerial vehicle are controlled according to the monitored temperature value of the battery module. When the temperature value of the battery module is low, the battery module is heated bythe heat dissipation airflow of the unmanned aerial vehicle, and when the temperature value of the battery module is high, the heat dissipation airflow is increased to help the battery module to dissipate heat quickly; and when the temperature value of the battery module is too low or too high, the temperature abnormal alarm is reported back to an operator of the unmanned aerial vehicle, and theunmanned aerial vehicle is controlled to return or land when the battery module temperature value is too low to avoid air crash accidents.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicles, and in particular relates to an unmanned aerial vehicle and a temperature control system and method for a battery of the unmanned aerial vehicle. Background technique [0002] Batteries are the power source for drone flight. Due to the rapid power consumption during the flight of the UAV, high output power is required, and in order to keep the volume and weight of the lightweight battery as small as possible, UAVs generally use polymer lithium batteries as power sources. Polymer lithium batteries are expensive, and ensuring their reliable operation and good life is an important issue in drone technology. [0003] Temperature has a significant impact on the performance of polymer lithium batteries. Especially at a low temperature below 5 degrees Celsius, the activity of the chemical components of the polymer lithium battery is significantly reduced, and its internal resistance increases, ...

AI Technical Summary

Problems solved by technology

Especially at a low temperature below 5 degrees Celsius, the activity of the chemical components of the polymer lithium battery is significantly reduced, and its internal resistance increases, resulting in a decrease in discharge capacity and a decrease in output voltage.

This will lead to insufficient power for the rotor of the UAV, or cause the UAV to judge that the lithium battery is over-discharged and automatically cut off the power, both of which will make the UAV unable to fly normally, or even cause a crash

On the other hand, although the polymer lithium battery can be discharged normally at a temperature of up to 50 degrees Celsius, working for a long time at a high temperature will still have an adverse effect on the cycle life of the battery

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