Application: Liquid Cooled Cold Plate 液冷板应用
Introduction 介绍:
- it is specifically designed for high power density applications which requiring a compact and light-weight design. It allows for efficient heat transfer between the cold plate contact surface and the power module base plate. 特别针对高功率密度散热的紧凑型和轻型设计场合。对于冷板和电源模块的接触面的热量传递十分有效
Application 应用:
- Electric Vehicle Motor Drives 电动汽车驱动散热
- Wind Turbines or Solar Inverters 风力涡轮机或太阳能逆变器
- Industrial Motor Controls 工艺发动地控制模块
- Power Converters 电源转换
- Rail Traction Systems 铁路牵引系统
- Vehicle Auxiliary Systems 车辆辅助系统
Working Features 工作特征:
- Direct cool modules installed 直接散热模块安装
- Can cool modules on double sides 可双面散热
Other Features 其他特征:
- Cooling Fluid冷却液: 50% Ethylene Glycol 乙二醇 50% Water水or others compliance with aluminum 或其他适用于铝合金冷却液
- Fluid connector 接头: 1/4 - 18 NPT
Input data for simulation 模拟计算输入数据:
- Cold plate material冷板材料: 6063-T5
- Liquid type冷却液：50%EG:50%Water
- Inlet liquid temperature入口液体温度: 45℃
- Total Heat load总热负荷=3KW: each heat source 每个热源负荷=1KW(48*93mm)
- The simulation model is based on 3D cad model, showing beside 模具基于3D模型
Flow rate流速=6LPM@45℃:
- The max temperature最大温度=83℃，Pressure loss压损=6KPa
Flow rate流速=9LPM@45℃
- The max temperature最大温度=77.8℃, Pressure loss压损=13.3KPa
Flow rate流速=18LPM@45℃
- The max temperature最大温度=70.8℃, Pressure loss压损=50.8KPa
Application Result 应用案例模拟结果
The cold plate performance curve 冷板性能曲线
- Thermal resistance Rth use the difference between the Max Cold Plate Temperature and the Fluid Inlet Temperature 冷板最大温度与入口温度间的差异作为热阻
- The Fluid is 50%Ethylene Glycol 50% Water, at 45℃ inlet temperature 冷却液为50%乙二醇加50%水
Application Comparison 应用比较案例
Original design was made by Die Casting plus Fins together then Vacuum brazing 最初设计为压铸真空钎焊散热片
Hard for brazing between Tub and cover because of the high brazing temperature for Die-casting Al alloy and its nonuniformity压铸铝的钎焊温度高和工艺过程导致的材料不均匀性使得钎焊不易
New Design with forging the LCP (Forging condition -10℃--450℃）新设计通过冷锻工艺制作液冷板
The Cover and tub with pins will be brazed perfectly for the material of tub and cover are same alloy Al由于腔体和盖板都为纯铝合金材料，产品非常容易钎焊
Result结果：
Compare to original coldplate, the forged coldplate has 25% performance increased and the cost be reduced 30% 与最初设计的冷板比较，冷锻设计的冷板散热效率提高25%，成本下降30%
