مقدمة
As demand for renewable energy and battery storage continues to grow, فوسفات الحديد الليثيوم (LiFePO4 أو LFP) technology has become an important option for stationary energy storage and industrial battery applications.
ال 3.2V 304Ah LiFePO4 battery cell is a large-format prismatic cell designed for evaluation by battery pack manufacturers, تكامل نظام تخزين الطاقة, and other B2B buyers. بسعة اسمية تبلغ 304 أمبير في الساعة وطاقة اسمية تبلغ 972.8 واط في الساعة, it provides a technical foundation for designing compatible battery packs.
This article explains the cell’s key specifications, charging and discharging capabilities, بيانات اختبار دورة الحياة, حدود درجة الحرارة, والتطبيقات المحتملة.
1. What Is a 3.2V 304Ah LiFePO4 Battery Cell?
A 3.2V 304Ah LiFePO4 battery cell is a rechargeable lithium iron phosphate cell with a nominal voltage of 3.2V and a nominal capacity of 304Ah.
LiFePO4 chemistry is widely used in battery applications where thermal behavior, cycle-life characteristics, and predictable operating limits are important considerations. Actual safety and service life depend on cell quality, system engineering, ظروف التشغيل, and appropriate protection.
The prismatic aluminum-case format provides a defined mechanical structure for integration into a battery module or pack.
المواصفات الفنية الرئيسية
| المعلمة | مواصفة |
|---|---|
| كيمياء البطارية | LiFePO4 / LFP |
| الجهد الاسمي | 3.2V |
| القدرة الاسمية | 304اه |
| الطاقة الاسمية | 972.8هل |
| مقاومة التيار المتردد | .50.5mΩ عند 1 كيلو هرتز, at ≥25°C |
| الحد الأقصى لتيار الشحن المستمر | 250أ |
| الحد الأقصى لتيار التفريغ المستمر | 304أ |
| Pulse Charge/Discharge Current | 456ا ل 60 ثواني |
| درجة حرارة الشحن | 0درجة مئوية إلى 60 درجة مئوية |
| درجة حرارة التفريغ | -30درجة مئوية إلى 60 درجة مئوية |
| وزن | 5.47 ± 0.05 كجم |
These values are based on the applicable product specification. Current ratings must be interpreted within the specified operating and test conditions.
2. Understanding the Cell’s Nominal Energy
Nominal energy is calculated by multiplying nominal voltage by nominal capacity.
Nominal Energy = Nominal Voltage × Nominal Capacity
لهذه الخلية:
3.2فولت × 304 أمبير = 972.8 وات ساعة
This means each cell provides approximately 0.973kWh of nominal energy.
عند تصميم حزمة البطارية, engineers can use this value for preliminary energy calculations. لكن, usable energy will depend on the selected operating voltage range, عمق التفريغ, إعدادات نظام إدارة المباني, خسائر التحويل, درجة حرارة, and system requirements.
على سبيل المثال, a battery pack’s final nominal energy is determined by the number of cells and their series-parallel configuration. The pack should also be evaluated for voltage compatibility, الحدود الحالية, الإدارة الحرارية, and safety protection.
3. Charging and Discharging Performance
Current capability is an important selection criterion for battery cells used in energy storage and industrial battery systems.
The documented maximum continuous charging current for this cell is 250A. Its maximum continuous discharging current is 304A, equivalent to 1C based on the nominal 304Ah capacity.
The specification also lists a pulse charging and discharging current of 1.5C, or 456A, ل 60 ثواني.
These ratings should be understood separately:
- تيار الشحن المستمر: The maximum specified continuous charging current is 250A.
- تيار التفريغ المستمر: The maximum specified continuous discharge current is 304A.
- Pulse current: The specified 456A pulse current is limited to 60 ثواني في ظل الظروف المعمول بها.
A pulse rating must not be used as a continuous operating current. Battery pack designers should confirm the permitted current profile against cell temperature, حدود الجهد, conductor sizing, إعدادات نظام إدارة المباني, and thermal performance.
The cell specification identifies 0.5C as the standard charge and discharge rate for its standard test procedure.
4. Low AC Impedance and Electrical Evaluation
The specified AC impedance is no more than 0.5mΩ at 1kHz when the test temperature is at least 25°C.
AC impedance is a useful parameter when comparing cells and assessing electrical behavior. In a battery pack, impedance can influence voltage response and heat generation, particularly when current demand is high.
لكن, the cell’s AC impedance value alone does not determine total battery pack efficiency. Busbars, الموصلات, cell matching, درجة حرارة التشغيل, مكونات نظام إدارة المباني, and system design also affect overall performance.
للمشترين B2B, it is useful to define impedance measurement methods and acceptance criteria before cell qualification or bulk procurement.
5. دورة الحياة: What Do the Test Results Mean?
Cycle life helps battery pack manufacturers evaluate how a cell may perform over repeated charging and discharging.
The documented specification includes the following cycle-life results:
- At 25°C: على الأقل 3,500 cycles under the specified test procedure.
- At 45°C: على الأقل 1,800 cycles under the specified test procedure.
The test procedures define charging and discharging currents, حدود الجهد, درجة حرارة, and mechanical clamping conditions. These details matter when comparing the results with other battery cells.
The specification also describes a life-end management criterion under which use should stop when capacity falls below 70% of nominal capacity. The precise test method and its stated termination conditions should be reviewed when using the cycle-life data for engineering or commercial comparisons.
Actual cycle life varies with operating temperature, عمق التفريغ, تيار الشحن والتفريغ, ظروف التخزين, الإدارة الحرارية, وتصميم نظام البطارية. Laboratory test results should not be interpreted as a universal warranty or guaranteed service life.
6. Operating Temperature and Storage Requirements
Temperature management is important for both battery performance and safety.
The specified operating temperature ranges for this cell are:
- الشحن: 0درجة مئوية إلى 60 درجة مئوية
- التفريغ: -30درجة مئوية إلى 60 درجة مئوية
- Short-term storage: -20°C to 45°C for storage within one month
- Long-term storage: 0°C to 35°C for storage within one year
The specification also recommends a storage state of charge of 30% ل 50% for extended periods without use.
These ranges define specified limits, not a guarantee that all current ratings are available at every temperature. A suitable battery system should monitor cell voltage, حاضِر, and temperature, and apply appropriate protective limits.
For projects exposed to cold winters or high ambient temperatures, buyers should review the actual operating profile and required output before choosing a cell.
7. Mechanical Dimensions and Battery Pack Integration
The cell uses a prismatic aluminum-case format. Its documented mechanical dimensions are:
| البعد | مواصفة |
|---|---|
| عرض | 173.70 ± 0.50 ملم |
| سماكة | 71.70 ± 0.50mm under specified clamping conditions |
| الارتفاع الإجمالي | 207.20 ± 0.50 ملم |
| ارتفاع الجسم | 204.40 ± 0.50 ملم |
| مسافة مركز المحطة | 123.00 ± 0.30 ملم |
| وزن | 5.47 ± 0.05 كجم |
The thickness measurement is defined under a specified clamping force and state-of-charge range. لذلك, the final mechanical design should use the official dimensional drawing rather than relying only on a summary table.
Battery pack manufacturers should evaluate:
- Cell spacing and mechanical support
- Clamping or compression requirements
- Terminal and busbar compatibility
- Electrical insulation
- Enclosure dimensions and tolerances
- الإدارة الحرارية
- Voltage and temperature monitoring
These factors help determine whether the cell is suitable for a particular battery module or system design.
8. Potential Applications of 304Ah LFP Cells
Stationary Energy Storage
The cell may be evaluated for stationary energy storage battery packs designed for compatible system voltages, capacities, and current profiles.
تخزين الطاقة الشمسية
Battery packs incorporating LFP cells can be designed to store surplus solar electricity for later use. The complete system must be matched to the solar inverter, charge controller, خدمات إدارة المباني, ومتطلبات التثبيت.
تخزين الطاقة التجارية والصناعية
Commercial and industrial storage projects may use engineered battery packs for energy management, قوة احتياطية, and other application-specific functions.
تصنيع حزمة البطارية
Battery pack manufacturers may evaluate the cell for customized products requiring a particular voltage, سعة, الضميمة, and operating profile.
System Integration Projects
Energy storage integrators should verify the electrical, ميكانيكية, الحرارية, and safety requirements of the complete system before selecting a cell for production.
The cell is a battery component rather than a complete plug-and-play energy storage system.
9. What Should B2B Buyers Check Before Purchasing?
When sourcing 304Ah LiFePO4 battery cells, buyers should consider more than nominal capacity alone.
الوثائق الفنية: Request the applicable specification, dimensional drawing, and relevant quality documentation.
Current requirements: Compare continuous and pulse current needs with the specified cell ratings.
Cycle-life criteria: Check test temperatures, charge and discharge procedures, and end-of-life definitions.
Mechanical compatibility: Verify dimensions, terminal positions, spacing, and mechanical support requirements.
System protection: Confirm the BMS, charging equipment, مراقبة درجة الحرارة, and electrical protection strategy.
Compliance requirements: Check the applicable requirements for the destination market, transportation, and final battery system. Cell-level safety test results do not automatically certify a complete battery pack.
Supply planning: Discuss sample evaluation, كمية الطلب المتوقعة, project schedule, destination country, and required documents with the supplier.
A clear technical and commercial inquiry helps suppliers determine whether the product is appropriate for the intended project.
10. How to Request a Quote
If you are sourcing a 3.2V 304Ah LiFePO4 battery cell for an energy storage or battery manufacturing project, provide the following information when requesting a quotation:
- Application and target market
- الكمية المطلوبة
- مرحلة المشروع: research, sample testing, pilot production, أو الإنتاج الضخم
- Target pack voltage and capacity
- Expected charging and discharging current
- بلد المقصد
- Required technical documentation
- Any specific mechanical or integration requirements
This information supports a more efficient technical review and quotation process.
خاتمة
The 3.2V 304Ah LiFePO4 battery cell offers 972.8Wh nominal energy in a prismatic aluminum-case format. Its specified current capability, AC impedance, حدود درجة الحرارة, and documented cycle-life test results provide useful reference data for evaluating the cell in compatible energy storage battery packs.
Successful integration requires a complete review of electrical limits, الأبعاد الميكانيكية, temperature management, التوافق مع نظام إدارة المباني, and system-level safety requirements.
YIFANG supports B2B customers evaluating battery cells and energy storage products for their projects. Contact the team with your application, quantity, target configuration, and destination market to discuss your sourcing requirements.
