I. Background of the Unmanned Countermeasure Interference Equipment Project
   The global drone market size has grown from 25.6 billion US dollars (approximately 163.5 billion yuan) in 2021 to 82.1 billion US dollars (approximately 525 billion yuan) in 2023, with civilian drones accounting for 76%. The scale of the civilian unmanned aerial vehicle industry reached 117.43 billion yuan in 2023, increasing by 32% year-on-year. It is expected to exceed 200 billion yuan in 2025, with a compound annual growth rate of 25.6% from 2024 to 2029.
   Its unmanned aerial vehicles (UAVs) have a wide range of applications, covering agriculture, logistics and urban management, emergency rescue and industrial applications. Uavs have performed outstandingly in disaster prevention and control, building monitoring, medical supplies transportation and other fields. Subsequently, the state has issued documents such as the "14th Five-Year Plan for Civil Aviation Development" and the "Implementation Plan for Innovative Applications of General Aviation Equipment (2024-2030)", encouraging the development of low-altitude economy, easing airspace restrictions, and supporting the application of unmanned aerial vehicles in logistics, agriculture and other fields. We will continue to make efforts in terms of technological autonomy, regulatory improvement and ecological synergy to achieve a leap from "quantity" to "quality".
   However, the challenges that come with it are also constantly increasing. Security and privacy issues, privacy leaks and airspace management risks brought about by the popularization of drones still need to be addressed through regulations and technical means. With the continuous innovation in the low-altitude economy and the drone field, outdoor activities require features such as long endurance and strong power. Along with the rapid development of new energy battery technology, Lithium batteries, with their high energy density, long cycle life, and environmental friendliness, have become the mainstream power source for unmanned aerial vehicle (UAV) equipment. However, along with this, illegal flight incidents have occurred frequently, constantly posing challenges to low-altitude safety, aviation safety, public safety, and private privacy. As a result, we have been constantly innovating and launching preferred lithium battery solutions for unmanned countermeasure equipment systems. This solution is designed to meet the application requirements of unmanned countermeasure equipment projects. The products are widely used in sports events, large-scale public gatherings, national security protection tasks, handling of emergency incidents, maintaining order in major security incidents, and other fields, providing safe, efficient, and customized power solutions for lithium batteries under emergency usage conditions

II. Analysis of Equipment Demand Characteristics
1. Equipment application characteristics
▲ Equipment types: individual single soldier, multiple people and multiple machines, etc.
▲ Working environment: Temperature range, -40℃ to +70℃, high temperature, extremely cold, high humidity environment, high vibration, strong interference, etc.
▲ Power demand: Large continuous/peak power and long battery life. The voltage platform generally adopts 21.6V or 36V and other voltage platforms.

2. Core requirements for lithium batteries
High safety: Meets the explosion-proof, shock-proof, waterproof and anti-interference requirements of interference equipment under harsh working conditions.
▲ Long cycle life: ≥500 times (80% capacity retention rate).
▲ Fast charging: Supports 2 to 3 hours of fast charging, suitable for high-intensity work.
▲ High-power discharge: The battery supports continuous high-current discharge, meeting the high-current requirements of high-power devices and ensuring their continuous and stable operation.
▲ Intelligent management: The BMS (Battery Management System) is equipped with functions such as overcharge protection, overdischarge protection, overcurrent protection, short-circuit protection, temperature protection, and fault diagnosis, making the battery more intelligent.
Discharge temperature range: -40℃ to +70℃. In a low-temperature environment of -40℃, the battery's discharge efficiency is over 70%. A wider range of ambient temperature adaptability.
Charging temperature: -20℃ to +50℃ range, with a wider adaptability to environmental temperatures.

III. Scheme Design
1. Battery selection
▲ Cell types: Ternary lithium batteries (ultra-low temperature, high energy density, high safety), lithium iron phosphate batteries (ultra-low temperature, high safety, long life), sodium-ion batteries (high safety, long life, good low-temperature performance). Different system cells are selected and matched according to different application scenarios.
▲ Battery combination configuration structure: Series and parallel schemes are designed based on the required voltage and capacity of the equipment to meet the requirements of different output voltage platforms.
▲ Structural design: IP65 to IP68 protection grade, shock-resistant structure, explosion-proof enclosure (suitable for extreme environments or flammable and explosive environments).

2. BMS Management System
Core functions:
   Real-time monitoring of the voltage, temperature, SOC (State of Charge), and SOH (State of Health) of individual battery cells.
   The battery charging active balancing technology enhances the consistency of usage among battery cells and extends the lifespan of the battery pack.
   The I2C/SMBUS/CAN/RS485 communication interface enables data interaction and communication with the main control system of the equipment.
   The Coulomb computing method makes the battery SOC more accurate and the battery smarter.

3. Charging solution
▲ Charging equipment: Customized smart charger/charger/charging cabinet, supporting constant current and constant voltage (CC-CV) charging.
▲ Charging strategy: Select fast charging or slow charging mode based on the working conditions to prevent battery overload.
▲ Intelligent control and management: Based on the technical performance characteristics of the battery, the battery charging process and fault diagnosis are intelligently controlled.

IV. Safety and Compliance
1. Safety protection
▲ Thermal management: By adopting a reasonable structural layout, thermal runaway is reduced. Air cooling can be used (for high-power scenarios) to ensure temperature uniformity during battery use and effectively control battery thermal runaway.
▲ Fault protection: Multiple hardware protection mechanisms such as overcharge, overdischarge, short circuit, overcurrent, and over-temperature.
▲ Fault protection: Multiple hardware protection mechanisms such as short circuit, overcurrent, and over-temperature.
▲ Explosion-proof certification: The design can pass various safety regulations certifications.

3. Standard compliance
   It complies with national standards such as GB31241-2022 (Safety Technical Specification for Lithium-ion Batteries and Battery Packs for Portable Electronic Products), GB 17761-2024 (Safety Technical Specification for Electric Bicycles), GB/T 34131 (Lithium Batteries for Power Storage), GB 38031 (Safety Requirements for Batteries for Electric Vehicles), etc.
   How to obtain domestic and international certifications: GB certification, UN38.3 certification, UL certification, IEC certification, CE certification and other various certification requirements.

V. Project Implementation Plan

VI. Economic Benefit Analysis
1. Cost direction
   As a new type of energy product, lithium batteries are energy-saving and environmentally friendly, portable and lightweight, with low costs and easy maintenance. Compared with AC wired power supply, they are superior.
2. Energy-saving benefits:
   The charging efficiency is over 95%, significantly reducing energy consumption.
3. Maintenance cost:
   The maintenance-free design significantly reduces manual inspection and manufacturing costs.

VII. After-sales Service
1. Warranty period: 1 to 5 years of after-sales warranty, with a lifespan of over 500 to 800 cycles (whichever comes first).
2. Remote monitoring: According to the actual demand status, the cloud platform provides real-time monitoring of the battery status and early warning of potential faults.
3. Emergency Response: Respond within 4 hours, provide solutions within 8 hours, and offer on-site technical support within 24 to 48 hours.

Hint:
   The plan needs to be refined based on specific equipment parameters (such as voltage, capacity, and size limitations).
   It is recommended to conduct joint debugging with the equipment manufacturer to ensure the compatibility of the battery with the entire machine system.