1.2MW储能DCDC柜项目应用案例
1.2MW Energy Storage DCDC Cabinet Project Case
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出品方：稳利达电力电子 | Wenlida Power Electronics |
项目简介 | Project Introduction
本1.2MW储能DCDC柜为稳利达电力电子推出的大功率双向直流变换成套设备，采用多模块并联架构，面向高压锂电池储能大功率应用场景。依托成熟大功率电力电子技术，具备丰富高压锂电充放电及安全控制实践经验，实现兆瓦级双向大功率能量变换，完成高压电池簇与直流母线之间能量交互。系统保护机制完备，人机交互与通讯接口齐全，运行稳定可靠，适用于大型电化学储能、高压储能系统配套、电池充放电测试等多种项目场景。
This 1.2MW energy-storage DC-DC cabinet, developed by Wenlida Power Electronics, is a high-power bidirectional DC conversion complete-set equipment adopting multi-module parallel architecture for high-voltage lithium-ion battery energy-storage scenarios. Based on mature high-power power-electronic technology and solid practical experience in high-voltage lithium-ion battery charge-discharge & safety control, it realizes megawatt-level bidirectional high-power energy interaction between high-voltage battery clusters and DC bus. Featuring comprehensive protection functions, complete HMI and communication interfaces, it delivers stable and reliable performance for large-scale electrochemical energy storage, high-voltage energy-storage supporting, battery charge-discharge testing and other scenarios.
执行参考标准 | Reference Standards
产品设计、生产、检验严格遵循国家及行业相关标准，涵盖电工电子环境试验、低压成套设备、电磁兼容、储能系统接入、电力电缆设计、储能电池管理、安全防护等全套规范，同时兼容部分IEC国际标准，保障设备安全可靠运行。
Product design, manufacturing and inspection strictly comply with national & industrial standards, covering environmental tests for electrical & electronic products, low-voltage switchgear, EMC, energy-storage grid-connection, power-cable design, battery-management and safety protection. Partial IEC international standards are also adopted to ensure safe and reliable equipment operation.
系统拓扑说明 | System Topology Description
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图1：系统拓扑图 | Figure 1: System Topology Diagram |
整套系统配置10寸本地触摸屏，实现本地数据监控、触摸功能操作；配置1路RS485通讯接口，支持遥控、遥测、遥调远程功能。系统由多台200kW储能DCDC变换单元并联组成；高压电池簇接入电池侧端口，各DCDC单元并联至公共直流母线，完成高压电池簇与直流母线之间双向大功率能量交互；整机支持Profinet、Modbus-TCP工业以太网通讯，适配大型储能电站平台对接。
The system is equipped with a 10-inch local touch screen for on-site data monitoring and touch-based operation. One RS485 communication port is provided for remote telecontrol, telemetry and tele-adjustment. Multiple 200kW energy-storage DC-DC converter units work in parallel. High-voltage battery clusters connect to battery-side port and converters are paralleled to common DC bus to realize bidirectional high-power energy interaction. The unit supports Profinet and Modbus-TCP industrial Ethernet for large-scale energy-station platform integration.
完整全套参数表 | Complete Parameter Tables
表1 200kW储能DCDC单元电气参数 | Table 1 Electrical Parameters of 200kW Energy-Storage DC-DC Unit
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序号 No. |
电气类目 Category |
详细类目 Item |
规格 Specification |
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1 |
直流电压 DC Voltage |
电池侧直流电压 Battery-side DC Voltage |
1134-1512Vdc |
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母线侧直流电压 Bus-side DC Voltage |
Rated: 1000Vdc |
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2 |
直流电流 DC Current |
电池侧直流电流 Battery-side DC Current |
≤115A |
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母线侧直流电流 Bus-side DC Current |
≤200A |
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3 |
转换效率 Conversion Efficiency |
HV 1500V, LV 800V |
98% (Obtained under lab conditions) |
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4 |
额定功率 Rated Power |
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200kW @ 1000V low-side voltage |
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5 |
工作模式 Operation Mode |
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Constant-voltage / constant-current / constant-power (Optional) |
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6 |
电压稳定度 Voltage Stability |
静态 Static |
±1% |
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动态 Dynamic |
±3% |
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7 |
电流稳定度 Current Stability |
静态 Static |
±1% |
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动态 Dynamic |
±3% |
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8 |
通信接口 Communication Port |
RS485, fully isolated |
Modbus RTU protocol |
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CAN2.0A/B, fully isolated |
Up to 1M/S |
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9 |
供电方式 Power Supply |
AC220V |
AC220V |
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10 |
设置方式 Configuration |
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Via PC or upper computer by communication |
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11 |
保护 Protection |
- |
HV/LV side over-voltage & under-voltage protection, over-current, over-temperature, communication fault protection; auto-recovery after fault clearance |
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12 |
尺寸 Dimension |
W×D×H |
543mm × 600mm × 154mm |
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13 |
重量 Weight |
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60kg |
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14 |
操作方式 Control Mode |
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Auto or communication-based control |
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15 |
散热方式 Cooling |
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Air cooling |
表2 配套电池组参考参数 | Table 2 Reference Parameters of Matching Battery Cluster
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备注：电池参数仅供选型参考，以电池厂家实际供货为准 | Note: For reference only, subject to battery supplier's actual delivery |
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序号 No. |
项目 Item |
规格 Specification |
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1 |
电芯型号 Cell Model |
LF230 (LFP) |
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2 |
成组方式 Configuration |
4P420S |
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3 |
额定电压 Rated Voltage |
1344Vdc |
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4 |
工作电压区间 Operating Voltage Range |
1134-1512Vdc |
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5 |
系统容量 System Capacity |
920Ah |
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6 |
额定电量 Rated Energy |
1236.48kWh |
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7 |
标准充/放电电流 Standard Charge / Discharge Current |
460A / 920A |
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8 |
峰值放电功率 Peak Discharge Power |
1854kW |
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9 |
冷却方式 Cooling Mode |
Liquid cooling |
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10 |
防护等级 Protection Class |
IP67 |
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11 |
电芯循环寿命 Cell Cycle Life |
≥4000 cycles |
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12 |
BMS架构 BMS Architecture |
4 main-controller & 28 sub-controller |
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13 |
集装箱尺寸 Container Dimension |
2991 × 2438 × 2591mm |
表3 电芯参考参数 | Table 3 Reference Parameters of Battery Cell
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序号 No. |
项目 Item |
规格 Specification |
备注 Remarks |
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1 |
化学体系 Chemistry System |
LFP |
Lithium-iron-phosphate |
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2 |
额定容量 Rated Capacity |
230Ah |
Standard discharge |
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3 |
额定电压 Rated Voltage |
3.2V |
Standard discharge |
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4 |
内阻 Internal Resistance |
0.2~0.25mΩ |
- |
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5 |
质量能量密度 Gravimetric Energy Density |
177Wh/kg |
Standard discharge |
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6 |
工作电压 Operating Voltage |
2.5-3.65V |
- |
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7 |
标准充放电倍率 Standard Charge-Discharge Rate |
0.5C / 1C |
- |
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8 |
**大瞬时充放电倍率 Max. Transient Rate |
2C |
30s, ≤80% SOC, 25℃±2℃ |
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9 |
电芯重量 Cell Weight |
4.14±0.15kg |
- |
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10 |
循环寿命 Cycle Life |
>4000 cycles |
70% SOH @ 25℃ |
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11 |
电芯尺寸 Cell Dimension |
53.85 × 173.93 × 207.2mm |
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表4 整机规格参数 | Table 4 Complete Unit Specifications
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模块 Module |
项目 Item |
参数 Parameter |
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直流母线接口参数 |
电压范围 Voltage Range (V) |
Rated: 1000Vdc |
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**大电流 Max. Current (A) |
1200 |
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额定功率 Rated Power (kW) |
1200 |
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电池接口参数 |
电压范围 Voltage Range (V) |
1134-1512Vdc |
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**大电流 Max. Current (A) |
230 |
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额定功率 Rated Power (kW) |
1200 |
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整机基本参数 |
工作温度范围 Operating Temp. (℃) |
-20 ~ +45 (derating above 45℃) |
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相对湿度 Relative Humidity |
0 ~ 90%, non-condensing |
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**工作海拔 Max. Operating Altitude (m) |
2000 (derating above 2000m) |
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冷却方式 Cooling Mode |
Forced air cooling |
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显示 Display |
Touch screen (remote monitoring supported) |
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通讯方式 Communication |
Profinet / Ethernet (Modbus TCP) |
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辅助供电 Auxiliary Power Supply |
AC220V (User-supplied), approx. 3kW |
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防护等级 Protection Class |
IP20 |
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重量 Weight (kg) |
N/A |
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DCDC柜尺寸 (宽×深×高 mm) |
800 × 800 × 2300 (Tentative, installed inside battery container) |
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电池集装箱尺寸 Container Dimension (mm) |
2991 × 2438 × 2591 (Tentative) |
设备搬运说明 | Equipment Handling Instruction
机柜底座预留专用叉车孔位，搬运时叉车货叉对准底部方形孔位叉入，全程移动需缓慢平稳，避免设备磕碰倾倒。
Special forklift holes are reserved at cabinet base. Insert forklift forks into square holes during handling. Move slowly and steadily to prevent collision or tipping-over.
应用场景 | Application Scenarios
典型应用 | Typical Applications
? 大型高压电化学储能电站配套
? 集装箱式储能系统直流变换单元
? 高压锂电池大功率充放电测试平台
? 工商业兆瓦级储能项目
? 多模块并联高压储能变流应用
? Supporting for large-scale high-voltage electrochemical energy-storage power station
? DC-DC conversion unit for container-type energy-storage system
? High-power charge-discharge test platform for high-voltage lithium-ion battery
? Commercial & industrial megawatt-level energy-storage projects
? Multi-module parallel high-voltage energy-storage conversion applications
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定制说明：稳利达电力电子本系列产品支持定制开发，可根据现场工况调整功率、接口、运行逻辑，适配不同项目的建设需求。 Customization Note: Customization available by Wenlida Power Electronics. Power rating, ports and operation logic can be adjusted according to site conditions to meet various project requirements. |
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