I. Background of Power Tools
   Due to industrial development, people's demands for daily life and production tools have been constantly improving, and power tools have also been continuously evolving. The development background is mainly reflected in the following aspects:

Industrial development
▲ Manufacturing Upgrade: After the Industrial Revolution, manufacturing developed rapidly, and traditional hand tools were difficult to meet the demands of large-scale production. Electric tools, with their higher efficiency and precision, have been widely applied in industries such as mechanical manufacturing, automotive manufacturing, and construction. For instance, electric drills and electric saws can significantly enhance processing and assembly speeds.
▲ Trend in production automation: As the degree of industrial automation increases, the demand for power tools has evolved from simple handheld tools to automation and intelligence, with the emergence of power tools for robots and others to meet the needs of automated production lines.

Technological progress drives
▲ Motor technology breakthrough: The continuous progress of motor technology is the key to the development of power tools. From DC motors to AC motors and then to the application of brushless motors, the performance of motors has been continuously improving, featuring higher power, efficiency and stability, while reducing energy consumption and noise.
▲ Battery technology innovation: The development of rechargeable battery technology has freed power tools from the constraints of power cords, making them more portable. From the early nickel-cadmium batteries to nickel-metal-hydride batteries, and now to the widely used lithium batteries, the energy density of batteries has been continuously improving, the charging time has been shortened, and the service life has been extended.
▲ Application of electronic control technology: The application of electronic control technology in power tools is becoming increasingly widespread, achieving precise control of tool speed, torque, start and stop, etc., enhancing the safety and convenience of operation, and also enabling fault diagnosis and protection functions.

Consumer market demand
▲ The DIY market is on the rise: With the improvement of people's living standards and housing conditions, more and more people are enthusiastic about doing home decoration, maintenance and making by themselves. The demand for power tools is constantly increasing, and small power tools such as electric drills and electric screwdrivers have become essential items in households.
▲ The upgrading of professional user demands: Practitioners in professional fields such as construction, decoration, and carpentry have increasingly higher requirements for the performance and quality of power tools, which prompts manufacturers to continuously introduce high-performance and high-quality professional-level power tools to meet the needs of professional users.
   New energy lithium batteries, with their advantages of high energy density, long cycle life and environmental friendliness, have become the preferred power solution for power tool products. This solution is designed to meet the application requirements of lithium batteries in power tool products, ensuring 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, -20℃ to +70℃, high temperature, high humidity, high vibration environment, etc.
▲ Power demand: Large continuous/peak power, long battery life, and the voltage platform generally adopts 12V or 18V 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: 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, 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
▲ It greatly enhances work efficiency, reduces time costs, lowers long-term maintenance costs, and its multi-functionality reduces equipment procurement costs, among other advantages.
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, easy to clean and maintain, and has low storage costs.

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