I. Development Background of Mobile Phones, Tablets, Computers and 3C Consumer Products
   The development backgrounds of mobile phones, tablets and computers each have their own characteristics. The following is a relevant introduction:
▲ Development of communication technology: From 1G analog voice communication to today's 5G high-speed data transmission, every revolution in communication technology has driven the development of mobile phones. For instance, 2G ushered in the era of digital communication and text messaging, 3G enabled mobile phones to access the Internet quickly and watch videos, 4G gave rise to applications such as mobile live streaming and short videos, and 5G is now driving the development of new fields like intelligent driving and telemedicine.
Advancements in integrated circuit technology: The continuous improvement of chip integration has significantly enhanced the performance of mobile phones, enabling them to easily run complex operating systems and large-scale applications. Meanwhile, the development of low-power chips has extended the battery life of mobile phones.
▲ Diversified consumer demands: Consumers' demands for mobile phone functions are constantly increasing. They not only require good communication quality but also hope for functions such as photography, entertainment, and office work. Mobile phone manufacturers are constantly innovating, making mobile phones intelligent terminals integrating multiple functions.
▲ The demand for mobile office work is on the rise: People hope to work efficiently while on the move, handling documents, tables, presentations, etc. Tablets, with their portability and certain office capabilities, have become a supplement to laptops, meeting people's office needs in scenarios such as business trips and travels.
▲ Upgraded entertainment experience: The tablet screen is larger than that of a mobile phone, offering better visuals and sound effects, making it suitable for entertainment activities such as watching videos and playing games. The application of high-definition display screens and high-performance graphics processing chips has brought users an outstanding entertainment experience.
▲ Education market demand: With the development of online education, tablets have become an important tool for students' learning. Educational software can be installed, electronic textbooks can be read and online learning can be conducted. It is convenient and efficient, and is popular among educational institutions and students.
▲ Driven by scientific research and military demands: Computers were initially developed to meet the computing needs of military and scientific research, such as ENIAC developed by the United States for calculating missile trajectories and so on. Later, with the development of technology, it was gradually applied to other fields.
▲ The development of the Internet promotes: The rise of the Internet has greatly expanded the functions of computers. People can browse web pages, send and receive emails, and do online shopping through computers. The combination of computers and the Internet has changed people's ways of life and work.
   New energy lithium batteries have become popular in mobile phones due to their advantages such as high energy density, long cycle life and environmental friendliness. The main preferred solution for lithium batteries in tablets, computers and 3C products. This solution is specifically for mobile phones. The application requirements of lithium batteries for tablets, computers and 3C products 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 type: It is used in various industries of work and people's lives in daily life.
▲ Working environment: Temperature range, from -20℃ to +70℃, high-temperature, high-humidity environments, 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: ≥500 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: -20℃ to +70℃. In a low-temperature environment of -20℃, 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, 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. Air cooling/physical cooling systems 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
▲ Reduce operating costs, lower risk costs and save financial costs.
2. Energy-saving benefits:
▲ It significantly reduces the consumption of electrical energy, decreases the demand for heat dissipation, and extends the service life of the equipment.
3. Maintenance cost:
▲ The design is intelligent, with a long service life and simple maintenance.
VII. After-sales Service
1. Warranty period: 1 to 5 years of after-sales warranty, with a lifespan of over 500 to 1,000 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).
▲ If special environments 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