I. Background of New Energy Vehicles
   The development background of new energy vehicles is mainly reflected in the following aspects:
Energy factor
▲ Energy crisis awareness: As global oil resources become increasingly scarce and the distribution of traditional energy sources such as oil is uneven, countries are paying more and more attention to energy security. The development of new energy vehicles can reduce reliance on imported oil and enhance energy self-sufficiency.
▲ Energy transition demand: With the rapid development of renewable energy sources such as solar and wind energy, new energy consumption patterns are needed to absorb these energies. New energy vehicles can serve as energy storage terminals and mobile energy carriers, promoting the transformation and optimization of the energy structure.
Environmental factors
▲ Environmental protection policies are becoming stricter: Environmental problems such as global warming are becoming increasingly severe. Vehicle exhaust is one of the main sources of air pollution. To reduce carbon emissions and pollutant emissions, various countries have formulated strict vehicle exhaust emission standards. The zero-emission or low-emission feature of new energy vehicles makes them an important way to meet environmental protection requirements​ Diameter.
▲ The demand for urban environmental improvement: In cities, new energy vehicles can effectively reduce noise pollution and air pollution, improve the living environment and air quality of urban residents, and enhance the sustainable development level of the city.
Technical factors
▲ Advancements in battery technology: The continuous increase in battery energy density, the sustained reduction in cost, and the gradual shortening of charging time have significantly enhanced the driving range and ease of use of new energy vehicles. For instance, the development of lithium-ion battery technology has laid the foundation for the popularization of pure electric vehicles.
▲ The development of intelligent connected vehicle technology: The maturity of technologies such as 5G, artificial intelligence, and the Internet of Things has promoted the intelligent connected development of automobiles. The integration of new energy vehicles with intelligent transportation, smart grids, and other fields has become possible, providing users with more convenient and intelligent travel services.

Policy factors
▲ Subsidies and preferential policies: Many countries and regions have introduced policies such as car purchase subsidies, tax incentives, free parking, and no traffic restrictions, which have reduced consumers' car purchase costs, enhanced the market competitiveness of new energy vehicles, and stimulated market demand.
▲ Industrial planning and Guidance: The government has formulated a development plan for the new energy vehicle industry, clearly defining the industry's development goals and directions, guiding social capital and technological resources to gather in the new energy vehicle sector, and promoting the rapid development of the industry.

Market factors
▲ Transformation of consumption concepts: Consumers' environmental awareness and acceptance of new technologies are constantly increasing. They are increasingly inclined to choose green and intelligent travel methods, and have higher requirements and expectations for the performance, quality and intelligent configuration of new energy vehicles.
▲ The development of shared mobility: The rise of the sharing economy, such as ride-hailing services, shared bikes, and shared cars, has provided a broad application scenario for new energy vehicles and driven the growth of market demand for new energy vehicles.
   New energy lithium batteries, with their advantages of high energy density, long cycle life and environmental friendliness, have gradually become the preferred solution for new energy vehicles. This solution is designed to meet the application requirements of lithium batteries in new energy vehicle equipment projects, ensuring that lithium batteries can provide safe, efficient and customized power solutions for their equipment in special fields.

II. Analysis of Equipment Demand Characteristics
1. Equipment application characteristics
▲ Equipment type: To meet people's travel needs, logistics transportation operations, etc.
▲ Working environment: Temperature range, from -40℃ to +70℃, high temperature, extremely cold, high humidity environment, etc.
▲ Power demand: Large continuous/peak power, long battery life, and the voltage platform generally adopts high-voltage platforms such as 48V or 400V.

2. Core requirements for lithium batteries
▲ High safety: Meeting the explosion-proof, shock-proof, water-proof and anti-interference requirements of automobiles 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 chargers/charging piles, 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/liquid 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
▲ New energy vehicles have low energy consumption costs, long battery life, and government incentives and subsidies, which significantly reduce the purchase cost.
2. Energy-saving benefits:
▲ The motor conversion rate of new energy vehicles is high, and it also takes into account energy recovery, reducing pollution emissions.
3. Maintenance cost:
▲ The vehicle maintenance cost and maintenance time are long, the charging cost is better than that of traditional energy vehicles, and the component maintenance cost is low.

VII. After-sales Service
1. Warranty period: 3 to 10 years of after-sales warranty, with a lifespan of over 2,000 to 5,000 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).
▲ It is recommended to conduct joint debugging with the equipment manufacturer to ensure that the battery is compatible with the entire machine system