As an important information collection platform in modern military and civil fields, the core of unmanned reconnaissance aircraft's performance is the design of battery system. Battery system not only determines the endurance and power guarantee of UAV, but also affects its safety, stability and environmental adaptability. This paper focuses on the battery system of unmanned reconnaissance aircraft of 300V and 80Ah specifications, and details its design idea, structure composition, key technologies and performance advantages, aiming at providing a complete power solution for high-performance unmanned reconnaissance aircraft, ensure its stable operation in complex combat and reconnaissance environments.

I. Design objectives and requirements of battery system

the battery system specifications of 300V and 80Ah mean that the system needs to output higher voltage and capacity to meet the long-time and high-intensity flight requirements of unmanned reconnaissance aircraft. The following aspects should be fully considered in the design process:

1. high energy density and endurance
   meet the long-time lag and long-distance flight requirements of unmanned reconnaissance aircraft, and realize continuous and stable power output.

2. Safety and Reliability
   ensure the safety of the battery system in various operating states and prevent risks such as overcharge, overdischarge, short circuit and thermal runaway.

3. Environmental adaptability
   adapt to various complex climate environments and ensure normal work under high temperature, low temperature, high humidity and other conditions.

4. modularization and convenient maintenance
   the design of battery system should be convenient for quick replacement and maintenance, and reduce the interruption time of combat or task.

5. Intelligent management
   integrate advanced battery management system (BMS) to realize real-time monitoring and fault warning and prolong battery life.

II. Battery system structure

the 300V 80Ah battery system mainly consists of lithium ion battery pack, battery management system (BMS), heat dissipation system and protective shell.

1. Lithium ion battery pack

high performance lithium-ion battery monomer is adopted, and the monomer voltage is generally about 3.6V. The goal of 300V voltage and 80Ah capacity is achieved through the combination of series and parallel connection. The specific configuration is about:

• number of series Connections: about 83 sections (83 × 3.6V & asymp; 300V)
• number of parallel connections: calculated based on single capacity to reach 80Ah total capacity

the battery monomer has been strictly screened to ensure the consistency of capacity and internal resistance and the overall performance of the battery pack is stable.

2. Battery management system (BMS)

BMS is the "brain" of the system, which monitors the voltage, current, temperature and State of the battery pack in real time. Its main functions include:

• voltage and current monitoring: prevent over-charging, over-discharging, and over-current from damaging the battery
• temperature Monitoring and Management: prevent the battery from overheating or supercooling to ensure safety
• monomer equilibrium: balance the single voltage of each battery to prolong the battery life
• fault diagnosis and alarm: Discover abnormal situations in time to reduce the risk of failure
• data recording and communication: feedback battery status information to UAV control system to realize intelligent scheduling

3. Heat dissipation system

high electricityThe high-capacity battery will generate a lot of heat during the charging and discharging process. Designing an effective cooling system is crucial to ensuring battery life and safety. Cooling solutions include:

• natural heat dissipation structure design: use high thermal conductivity materials and cooling fin
• force-air cooling or liquid cooling system(According to the specific requirements of UAV)
• real-time monitoring of thermal sensors, cooperate with BMS to adjust the working status

4. Protective shell

outside the battery pack the shell is made of lightweight and high-strength materials, which are waterproof, dustproof and impact resistant. The shell design conforms to the installation specifications of unmanned reconnaissance aircraft, ensuring that the battery pack is closely integrated with the body and improving the overall reliability of the system.

III. Key technologies and implementation solutions

1. Safety design of high voltage system

the design of 300V high voltage system must strictly abide by the safety specifications. High quality insulation material is used inside the battery pack to prevent voltage leakage. BMS has multiple redundant protection mechanisms, including hardware circuit breakers and softwarePiece protection algorithm ensures that the system can quickly power off when abnormal, and ensures the safety of personnel and equipment.

2. Efficient energy management

through accurate current, voltage and temperature collection, intelligent charge and discharge management can be realized to maximize battery energy utilization. BMS supports dynamic load adjustment to adapt to the power requirements of different flight stages of unmanned reconnaissance aircraft and prolong flight time.

3. Fast charging technology

advanced fast charging technology is adopted to support high-rate charging, Shorten charging time, quickly restore flight capability and reduce task waiting time.

4. Environmental adaptability design

high temperature and low temperature resistant battery materials and packaging technology are adopted to ensure the stable operation of the battery system in the range of-20℃ to 60℃. The enclosure seal design ensures that the system is waterproof and dustproof, and can adapt to various complex climate environments.

5. Modular design

the battery system adopts modular design, and the battery pack can be removed and replaced,It is convenient for quick on-site maintenance and upgrade. Standardized interfaces between modules improve system compatibility and scalability.

IV. Battery system performance advantages

1. Long-lasting endurance

the high voltage and large capacity design of 300V 80Ah significantly improves the endurance and flight distance of unmanned reconnaissance aircraft and meets the requirements of long-range reconnaissance mission reguirement.

2. High security

multiple protection mechanisms and advanced BMS ensure the safe operation of the battery system and effectively prevent safety accidents caused by battery failures.

3. Excellent environmental adaptability

the design meets stringent environmental requirements and is suitable for reconnaissance missions under diverse and complex geographical and climatic conditions.

4. Maintenance convenience

5. Intelligent management

real-time monitoring and data analysis functions can realize battery health assessment and early warning and prolong battery life.

V. Practical application significance

the 300V 80Ah battery system provides powerful and stable power guarantee for unmanned reconnaissance aircraft, enabling it to complete the growth time and high-intensity reconnaissance mission in complex and changeable environment. The high security and intelligent management functions of the system greatly reduce operational risks and improve task completion rate and equipment reliability.