The invention discloses a power supply control method for a hydrogen fuel cell unmanned aerial vehicle based on a full-power DCDC converter, and belongs to the technical field of unmanned aerial vehicle hydrogen fuel cells, 1200 W power voltage stabilization is realized through four LT8708 chips connected in parallel, the working voltage of a galvanic pile is enabled to accord with the working rated voltage of a rotor motor, meanwhile, the parallel connection of the four LT8708 chips is realized through a current sharing circuit, and the working efficiency of the rotor motor is improved. Therefore, it is ensured that each chip evenly distributes load current, the stability and reliability of a system are improved, all the power MOS tubes are distributed on the back face of the power board, heat dissipation is conducted through the cooling fins, the cooling fins make direct contact with the power MOS tubes through heat conduction materials, the heat dissipation efficiency is improved, the overheating problem of the power MOS tubes is effectively avoided, and the service life of the power board is prolonged. Meanwhile, the power supply control method is suitable for hydrogen fuel cell unmanned aerial vehicles of various models, the design meets the weight and size requirements of the unmanned aerial vehicles, and it is ensured that efficient energy management is achieved in a limited space.
本发明公开了基于全功率DCDC变换器的氢燃料电池无人机用电源控制方法,属于无人机氢燃料电池技术领域,其通过并联的四个LT8708芯片实现1200W功率稳压,使电堆工作电压符合旋翼电机的工作额定电压,同时,四个LT8708芯片的并联连接通过均流电路实现,从而确保每个芯片均匀分配负载电流,以此提升系统的稳定性和可靠性,且所有功率MOS管分布在功率板的背面,并且通过散热片进行散热,散热片通过导热材料与功率MOS管直接接触,提高散热效率,有效避免了功率MOS管的过热问题,以此确保系统在高负载下的稳定运行,同时,本发明电源控制方法适用于多种型号的氢燃料电池无人机,设计符合无人机的重量和体积要求,确保在有限的空间内实现高效能量管理。
Power supply control method for hydrogen fuel cell unmanned aerial vehicle based on full-power DCDC converter
基于全功率DCDC变换器的氢燃料电池无人机用电源控制方法
27.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B64U / H05K PRINTED CIRCUITS , Gedruckte Schaltungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
Hydrogen fuel cell power supply system for unmanned aerial vehicle and control method thereof
Europäisches Patentamt | 2024
|POWER SUPPLY SYSTEM, DCDC CONVERTER DEVICE, AND CHARGING METHOD
Europäisches Patentamt | 2022
|Hydrogen power fuel cell structure for unmanned aerial vehicle
Europäisches Patentamt | 2024
|Hydrogen power fuel cell structure for unmanned aerial vehicle
Europäisches Patentamt | 2022
|Hydrogen fuel cell power system of unmanned aerial vehicle
Europäisches Patentamt | 2021
|