I. Development Background of Wireless Communication Assurance System
Requirements and Development of Wireless Communication Assurance System
▲ Personal communication needs: With the improvement of people's living standards and the increase of social activities, the demand for communication anytime and anywhere is constantly growing. From the initial voice calls to later text messages, data transmission, video calls, etc., people hope to stay in touch with others at any time and any place. Wireless communication guarantee systems emerged as The Times require to meet people's increasingly diverse communication needs.
▲ Industry application requirements: Many industries such as power, transportation, and water conservancy have specific demands for wireless communication. For instance, in order to ensure the communication demands of production and meet the needs of dispatching, inspection and other services, a hydropower station needs to build a wireless communication system. In the field of emergency rescue, in scenarios such as emergency incidents and natural disasters, it is necessary to quickly establish communication links to ensure smooth information flow between the scene and the rear command center.
▲ Battlefield communication support: In modern warfare, wireless communication is the main means of information transmission on the battlefield, which is related to key links such as combat command, intelligence transmission, and troop coordination. To ensure the security of battlefield command and combat operations, advanced tactical-level wireless classified communication security guarantee technologies are needed to deal with complex electromagnetic environments and threats such as enemy interference and espionage.
▲ Military modernization construction: Military powerhouses apply advanced wireless communication technologies to the military field, promote the renewal and upgrading of military communication equipment, and enhance the information-based combat capabilities of the military.
All wireless communication guarantee systems cannot do without energy guarantee. New energy lithium batteries, with their advantages of high energy density, long cycle life and environmental friendliness, have become the preferred solution for power guarantee in wireless communication systems. This solution is aimed at the application requirements of lithium batteries in wireless communication guarantee system equipment projects. Ensure that lithium batteries can provide safe, efficient and customized power solutions in special fields;

II. Analysis of Equipment Demand Characteristics
1. Equipment application characteristics
▲ Equipment types: Professional wireless communication equipment, public mobile communication equipment, Internet of Things wireless communication equipment, etc. Real-time communication operations, etc.
▲ Working environment: Temperature range, from -40℃ to +70℃, high temperature, extremely cold, high humidity, strong interference environment, etc.
▲ Power demand: Large continuous/peak power, long battery life, and the voltage platform generally adopts 3.7V or 7.4V and other voltage platforms.

2. Core requirements for lithium batteries
▲ High safety: Meets the explosion-proof, shock-proof, waterproof and anti-interference requirements of the equipment under harsh working conditions.
▲ Long cycle life: ≥2000 times (80% capacity retention rate).
▲ Fast charging: Supports 1 to 2 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: 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 can be reduced. A physical cooling system 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.

2. 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.In terms of cost
▲ Lithium batteries require a relatively large initial investment, but they have an absolute advantage in terms of long-term usage costs.
2. Energy-saving benefits:
▲ The charging efficiency is over 95%, which can significantly reduce energy consumption compared with AC power supply.
3. Maintenance cost:
▲ Maintenance-free design reduces AC circuit maintenance and personnel costs.

VII. After-sales Service
1. Warranty period: 1 to 5 years of after-sales warranty, with a lifespan of 500 to 2,000 cycles or more (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).
▲ If special environments (such as Marine and aerospace) are involved, corresponding protective designs need to be added.
▲ It is recommended to conduct joint debugging with the equipment manufacturer to ensure that the battery is compatible with the entire machine system