Application: Liquid Cooled Cold Plate 液冷板應(yīng)用
Introduction 介紹:
- 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. 特別針對(duì)高功率密度散熱的緊湊型和輕型設(shè)計(jì)場(chǎng)合。對(duì)于冷板和電源模塊的接觸面的熱量傳遞十分有效
Application 應(yīng)用:
- Electric Vehicle Motor Drives 電動(dòng)汽車驅(qū)動(dòng)散熱
- Wind Turbines or Solar Inverters 風(fēng)力渦輪機(jī)或太陽(yáng)能逆變器
- Industrial Motor Controls 工藝發(fā)動(dòng)地控制模塊
- Power Converters 電源轉(zhuǎn)換
- Rail Traction Systems 鐵路牽引系統(tǒng)
- Vehicle Auxiliary Systems 車輛輔助系統(tǒng)
Working Features 工作特征:
- Direct cool modules installed 直接散熱模塊安裝
- Can cool modules on double sides 可雙面散熱
Other Features 其他特征:
- Cooling Fluid冷卻液: 50% Ethylene Glycol 乙二醇 50% Water水or others compliance with aluminum 或其他適用于鋁合金冷卻液
- Fluid connector 接頭: 1/4 - 18 NPT
Input data for simulation 模擬計(jì)算輸入數(shù)據(jù):
- Cold plate material冷板材料: 6063-T5
- Liquid type冷卻液：50%EG:50%Water
- Inlet liquid temperature入口液體溫度: 45℃
- Total Heat load總熱負(fù)荷=3KW: each heat source 每個(gè)熱源負(fù)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最大溫度=83℃，Pressure loss壓損=6KPa
Flow rate流速=9LPM@45℃
- The max temperature最大溫度=77.8℃, Pressure loss壓損=13.3KPa
Flow rate流速=18LPM@45℃
- The max temperature最大溫度=70.8℃, Pressure loss壓損=50.8KPa
Application Result 應(yīng)用案例模擬結(jié)果
The cold plate performance curve 冷板性能曲線
- Thermal resistance Rth use the difference between the Max Cold Plate Temperature and the Fluid Inlet Temperature 冷板最大溫度與入口溫度間的差異作為熱阻
- The Fluid is 50%Ethylene Glycol 50% Water, at 45℃ inlet temperature 冷卻液為50%乙二醇加50%水
Application Comparison 應(yīng)用比較案例
Original design was made by Die Casting plus Fins together then Vacuum brazing 最初設(shè)計(jì)為壓鑄真空釬焊散熱片
Hard for brazing between Tub and cover because of the high brazing temperature for Die-casting Al alloy and its nonuniformity壓鑄鋁的釬焊溫度高和工藝過(guò)程導(dǎo)致的材料不均勻性使得釬焊不易
New Design with forging the LCP (Forging condition -10℃--450℃）新設(shè)計(jì)通過(guò)冷鍛工藝制作液冷板
The Cover and tub with pins will be brazed perfectly for the material of tub and cover are same alloy Al由于腔體和蓋板都為純鋁合金材料，產(chǎn)品非常容易釬焊
Result結(jié)果：
Compare to original coldplate, the forged coldplate has 25% performance increased and the cost be reduced 30% 與最初設(shè)計(jì)的冷板比較，冷鍛設(shè)計(jì)的冷板散熱效率提高25%，成本下降30%
