เหอหนาน Liyue ใหม่พลังงาน Co., Ltd
ระบบพลังงานลิเธียมไอออนแรงดันสูง 307.2V แบบกำหนดเองสำหรับโครงการยานยนต์ญี่ปุ่น
In the competitive landscape of electric mobility, the voltage platform and power density of the powertrain are pivotal in defining a vehicle’s performance ceiling. We are proud to have partnered with a leading Japanese automotive technology firm, renowned for its pursuit of excellence, to co-develop and deliver a deeply customized 307.2V High-Voltage Li-ion Power Battery System, serving as the robust “heart” for their next-generation high-performance electric platform.
Performance and Safety
Our partner aimed to develop an electric vehicle that marries long-range capability with explosive power output. Their core challenge was clear: how to achieve a peak power output exceeding 120KW within strict spatial and weight constraints, while guaranteeing absolute safety and long-term reliability under frequent, high-load conditions. This demanded a battery system with exceptional energy density, formidable discharge capability, and industrial-grade ruggedness.
Our Tailored Engineering Solution
The answer was the EV-GLP307.2V20Ah high-voltage power battery system—a testament to our philosophy of “engineered-to-order” precision.
1. High-Voltage Platform for Superior Power
- The system operates on a 307.2V nominal voltage, perfectly aligning with the requirements of high-performance motor controllers. This high voltage reduces operating current, minimizing transmission losses and thermal management loads, thereby enhancing overall vehicle efficiency.
2. Exceptional Power & Energy Density
- High Power Output: Capable of a 400A peak discharge current (for 10 seconds), the system can instantaneously deliver over 120KW of power, ensuring exceptional acceleration and gradeability.
- Strategically Optimized Capacity: The 20Ah capacity, when combined with the 307.2V platform, provides 6.144 kWh of usable energy. This design masterfully balances our client’s power demands with vehicle lightweighting goals, achieving an optimal energy-to-weight ratio.
Core Specifications Overview
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Battery Type | LiFePO4 | Rated Voltage | 307.2VDC |
| Usable Capacity | 6144 Wh @C2, 25°C | Rated Capacity | 20Ah |
| Operating Voltage Range | 220VDC – 350VDC | Cycle Life | >1500 cycles @80% DoD |
| Dimensions | 965×250×256mm (W×D×H) | Weight | 65kg |
| Max Charge Current | 10A continuous | Peak Discharge Current | 400A (10s) |
| Over-charge Protection | 3.6V | Over-charge Release | 3.40V |
| Over-discharge Protection | 2.30V | Over-discharge Release | 2.50V |
| Over-current Protection | 300A | Over-current Delay | 10s |
| Charge Temperature Range | 0°C – 60°C | Discharge Temperature Range | -20°C – 60°C |
| Charging Over-temperature | 55°C | Charging Under-temperature | 0°C |
| Discharge Over-temperature | 60°C | Discharge Under-temperature | -20°C |
| Self-discharge Rate | <3% per month | IP Protection | IP65 |
3. Automotive-Grade Safety & Reliability
- Cell Chemistry: We utilized inherently stable Lithium Iron Phosphate (LiFePO4) pouch cells, establishing a fundamental safety baseline for the entire system.
- Comprehensive BMS Protection: The Battery Management System (BMS) incorporates dozens of protection features against overcharge, over-discharge, over-current, short-circuit, and temperature extremes.
- Rugged Physical Enclosure: With an IP65 rating, the battery pack is completely dust-tight and protected against low-pressure water jets from any direction, effortlessly enduring the complex environmental challenges of automotive use.
4. Precision Mechanical & Thermal Design
- The compact dimensions of 965mm x 250mm x 256mm allow for adaptive integration, optimized to fit the client’s vehicle chassis layout seamlessly.
- A wide operating temperature range (Discharge: -20°C to 60°C), managed by the BMS’s thermal strategies, ensures consistent performance across diverse climatic conditions.
Professional Support & Data Visualization
To ensure seamless integration, we provided a complete engineering support package:
- Engineering Drawings: including mounting points and interface locations, facilitated precise early-stage vehicle and battery pack integration.
- Clear Charge/Discharge Curves: Graphical data illustrating voltage, current, and capacity relationships under various loads, providing critical insights for optimizing the vehicle’s electronic control strategy.
- Maintenance Guidelines: Key recommendations include:
- Avoiding prolonged storage at low state-of-charge (<10%); recharge to above 30% promptly.
- Charging within a 15°C to 45°C ambient temperature range is recommended for optimal performance and longevity.
Conclusion
This success story began with an in-depth communication about your needs. We believe that exceptional collaboration stems from genuine understanding.
Whether your project involves high-performance electric vehicles or any specialized application requiring innovative power solutions, we are equipped and ready to empower your vision.
Contact us today to discuss your next custom battery project.
