This project details the design and assembly of a 51.2V 24Ah Lithium Iron Phosphate (LiFePO4) Battery Pack, specifically engineered to deliver reliable, long-range power for high-performance electric scooties. Our focus was on maximizing safety, longevity, and thermal management.
1. Technical Specifications & Core Components
| Feature | Detail | Benefit/Function |
| Nominal Voltage | 51.2V | Optimized for high-efficiency motors. |
| Capacity | 24Ah | Ensures extended range and run time. |
| Cell Type | 26700 LiFePO4 Cells | Chosen for superior cycle life, stability, and high thermal runaway temperature. |
| BMS | JK 40A Smart BMS | Provides intelligent cell balancing, comprehensive multi-layer protection (OVP, UVP, OCP, OTP), and enables real-time monitoring. |
| Cycle Life | 3000 Cycles | Guarantees exceptional product longevity and low long-term operational cost. |
2. Engineering and Assembly Highlights
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Optimized Cell Spacing: Precision spacers were integrated during assembly. This design feature ensures consistent air gaps between the 26700 cells, critical for superior heat dissipation and maintaining cell temperature uniformity, thus enhancing overall lifespan and safety.
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Robust Housing Solution: The entire battery pack is housed within a custom-fitted fiber box. This robust enclosure serves dual purposes:
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Mechanical Protection: Shields the cells and BMS from impact and vibration.
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Environmental Resistance: Offers excellent water and heat resistance, ensuring reliable performance across diverse operating conditions.
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3. Safety and Reliability
The combination of chemically stable LiFePO4 chemistry, the intelligent JK Smart BMS, and the thermally-optimized, sealed fiber packaging results in a battery solution that meets high standards for operational safety and reliability, backed by a 2-year product warranty.
This project successfully delivered a powerful, durable, and intelligent energy storage solution ready for demanding electric mobility applications.