{"id":3219,"date":"2025-11-24T08:36:48","date_gmt":"2025-11-24T08:36:48","guid":{"rendered":"https:\/\/www.liyuebattery.com\/?p=3219"},"modified":"2025-11-24T08:36:49","modified_gmt":"2025-11-24T08:36:49","slug":"custom-307-2v-high-voltage-li-ion-power-system-for-a-japanese-automotive-project","status":"publish","type":"post","link":"https:\/\/www.liyuebattery.com\/zh\/blog\/custom-307-2v-high-voltage-li-ion-power-system-for-a-japanese-automotive-project\/","title":{"rendered":"\u4e3a\u65e5\u672c\u6c7d\u8f66\u9879\u76ee\u5b9a\u5236\u7684307.2V\u9ad8\u538b\u9502\u79bb\u5b50\u7535\u6e90\u7cfb\u7edf"},"content":{"rendered":"\n

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<\/strong>, serving as the robust “heart” for their next-generation high-performance electric platform.<\/p>\n\n\n\n

Performance and Safety<\/strong><\/h2>\n\n\n\n

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<\/strong> 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.<\/p>\n\n\n\n

\"Customized<\/figure>\n\n\n\n

Our Tailored Engineering Solution<\/strong><\/h2>\n\n\n\n

The answer was the EV-GLP307.2V20Ah<\/strong> high-voltage power battery system\u2014a testament to our philosophy of “engineered-to-order” precision.<\/p>\n\n\n\n

1. High-Voltage Platform for Superior Power<\/strong><\/p>\n\n\n\n

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  • The system operates on a 307.2V nominal voltage<\/strong>, 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.<\/li>\n<\/ul>\n\n\n\n

    2. Exceptional Power & Energy Density<\/strong><\/p>\n\n\n\n

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    • High Power Output<\/strong>: Capable of a 400A peak discharge current (for 10 seconds)<\/strong>, the system can instantaneously deliver over 120KW of power, ensuring exceptional acceleration and gradeability.<\/li>\n\n\n\n
    • Strategically Optimized Capacity<\/strong>: The 20Ah capacity, when combined with the 307.2V platform, provides 6.144 kWh of usable energy<\/strong>. This design masterfully balances our client’s power demands with vehicle lightweighting goals, achieving an optimal energy-to-weight ratio.<\/li>\n<\/ul>\n\n\n\n

      Core Specifications Overview<\/strong><\/p>\n\n\n\n

      Parameter<\/strong><\/th>Specification<\/strong><\/th>Parameter<\/strong><\/th>Specification<\/strong><\/th><\/tr><\/thead>
      Battery Type<\/strong><\/td>LiFePO4<\/td>Rated Voltage<\/strong><\/td>307.2VDC<\/td><\/tr>
      Usable Capacity<\/strong><\/td>6144 Wh @C2, 25\u00b0C<\/td>Rated Capacity<\/strong><\/td>20Ah<\/td><\/tr>
      Operating Voltage Range<\/strong><\/td>220VDC \u2013 350VDC<\/td>Cycle Life<\/strong><\/td>>1500 cycles @80% DoD<\/td><\/tr>
      Dimensions<\/strong><\/td>965\u00d7250\u00d7256mm (W\u00d7D\u00d7H)<\/td>Weight<\/strong><\/td>65kg<\/td><\/tr>
      Max Charge Current<\/strong><\/td>10A continuous<\/td>Peak Discharge Current<\/strong><\/td>400A (10s)<\/td><\/tr>
      Over-charge Protection<\/strong><\/td>3.6V<\/td>Over-charge Release<\/strong><\/td>3.40V<\/td><\/tr>
      Over-discharge Protection<\/strong><\/td>2.30V<\/td>Over-discharge Release<\/strong><\/td>2.50V<\/td><\/tr>
      Over-current Protection<\/strong><\/td>300A<\/td>Over-current Delay<\/strong><\/td>10s<\/td><\/tr>
      Charge Temperature Range<\/strong><\/td>0\u00b0C \u2013 60\u00b0C<\/td>Discharge Temperature Range<\/strong><\/td>-20\u00b0C \u2013 60\u00b0C<\/td><\/tr>
      Charging Over-temperature<\/strong><\/td>55\u00b0C<\/td>Charging Under-temperature<\/strong><\/td>0\u00b0C<\/td><\/tr>
      Discharge Over-temperature<\/strong><\/td>60\u00b0C<\/td>Discharge Under-temperature<\/strong><\/td>-20\u00b0C<\/td><\/tr>
      Self-discharge Rate<\/strong><\/td><3% per month<\/td>IP Protection<\/strong><\/td>IP65<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      3. Automotive-Grade Safety & Reliability<\/strong><\/p>\n\n\n\n

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      • Cell Chemistry<\/strong>: We utilized inherently stable Lithium Iron Phosphate (LiFePO4) pouch cells<\/strong>, establishing a fundamental safety baseline for the entire system.<\/li>\n\n\n\n
      • Comprehensive BMS Protection<\/strong>: The Battery Management System (BMS) incorporates dozens of protection features<\/strong> against overcharge, over-discharge, over-current, short-circuit, and temperature extremes. <\/li>\n\n\n\n
      • Rugged Physical Enclosure<\/strong>: With an IP65 rating<\/strong>, 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.<\/li>\n<\/ul>\n\n\n\n

        4. Precision Mechanical & Thermal Design<\/strong><\/p>\n\n\n\n

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        • The compact dimensions of 965mm x 250mm x 256mm<\/strong> allow for adaptive integration, optimized to fit the client’s vehicle chassis layout seamlessly.<\/li>\n\n\n\n
        • A wide operating temperature range (Discharge: -20\u00b0C to 60\u00b0C), managed by the BMS’s thermal strategies, ensures consistent performance across diverse climatic conditions.<\/li>\n<\/ul>\n\n\n\n

          Professional Support & Data Visualization<\/strong><\/h2>\n\n\n\n

          To ensure seamless integration, we provided a complete engineering support package:<\/p>\n\n\n\n

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          • Engineering Drawings<\/strong>: including mounting points and interface locations, facilitated precise early-stage vehicle and battery pack integration.<\/li>\n<\/ul>\n\n\n\n
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            • Clear Charge\/Discharge Curves<\/strong>: Graphical data illustrating voltage, current, and capacity relationships under various loads, providing critical insights for optimizing the vehicle’s electronic control strategy.<\/li>\n<\/ul>\n\n\n\n
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              • Maintenance Guidelines<\/strong>: Key recommendations include:\n
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                • Avoiding prolonged storage at low state-of-charge (<10%); recharge to above 30% promptly.<\/li>\n\n\n\n
                • Charging within a 15\u00b0C to 45\u00b0C ambient temperature range is recommended for optimal performance and longevity.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                  Conclusion<\/strong><\/h2>\n\n\n\n

                  This success story began with an in-depth communication about your needs. We believe that exceptional collaboration stems from genuine understanding.<\/p>\n\n\n\n

                  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.<\/strong><\/p>\n\n\n\n

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                  Contact us today to discuss your next custom battery project.<\/strong><\/p>\n\n\n

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