Water Cooled Heat Sink

Product Profile
The power components such as IGBT, GTO, etc., are employed in this water cooled heat sink which is a type of highly efficient radiator. It is used for controlling the temperature of the power module so that the temperature under the working environment would not exceed the highest temperature specified by the regulation and standard. The calculation of the maximum permissible temperature is based on the finite element thermal analysis and the working condition analysis of the components of this water cooled heat sink. Besides, the calculation should be in conformity with the requirements for the reliability and the service environment of this water cooled heat sink. In this way, the safety and reliable, steady operation of the power module as well as a longer service life of the equipment can be guaranteed.

Technical Parameter
Dimension Length×Width×Thickness: < 1250×800×60mm
Superficial treatment Wash, Black anodized, Nickel plating
Chrome plating
Planeness <0.05(100×100)
Roughness <1.6μm
Connection Type Vacuum brazing or argon arc welding
Coolant temperature (℃) Minus 30℃ to minus 60℃
Coolant Pure water or the mixed liquid of water and glycol
Flow (LPM) <80L/min
Surface temperature rise (℃) <30℃
Max. working pressure (kPa) 0.6Mpa-3.0MPa
Calorific value <30kW
Thermal resistance <2℃/kw (depends on the heat source distribution)
Common Processing Technologies and Classification
Structure Process Feature Photo
Drilling type Bend the copper pipe or stainless steel pipe,
embed the water pipe
CNC profile processing
Simple process, low cost in volume production and poor performance
Pressure tube type Milling groove or section bar slot broaching to embed the bended copper pipe into the slot by welding, pressing and pasting. CNC profile processing Simple technology, low cost in volume production and poor performance
Assembling type CNC or die-casting water chamber, body shape and cover. Seal by using the screw and seal ring or glue Simple process, low cost, medium performance and low reliability
Friction welding/ Electron beam welding Use the CNC to process the water chamber and cover. Conduct the seal welding by the friction welding or electron beam welding. CNC process the finished products. Relatively complicated process, flexible structure and good performance, high reliability and Relatively high cost
Vacuum brazing Process the water chamber by using CNC or other ways.
Conduct the face seal via the vacuum brazing.
Process the finished products by way of CNC.
complicated process, flexible structure, best performance,
high reliability and the
highest cost

LCP Properties & Parameters of FZ450R12ME3
Liquid cooling plate is adaptable for all thermal devices with the size of 62mm×122mm. The ΔT of LCP = thermal resistance × heat dissipation power.

Fin A (3mm in height)
  Pure Water (pure water) 50% pure water +50% ethylene glycol
rate, L/min
Heat Resistance
Pressure Drop
(ΔP, Pa)
Heat Resistance
2 23.4 752 32.3
4 16.3 2375 22.8
6 13.5 4727 18.9
8 11.9 7709 16.6
10 10.8 11267 15.1
12 10.1 15363 14
14 9.5 19968 13.2
16 9.1 25058 12.5
18 8.7 30616 11.9
20 8.4 36624 11.5
Fin B (5mm in height)
  pure water   Pure water+50% glycol
Pressure Drop
Heat Resistance
Pressure Drop
Heat Resistance
Pressure Drop
1602 27.1 386 37.8 682
3971 19 1252 27 1904
7272 15.8 2495 22.5 3735
11613 13.9 4069 19.8 6078
16874 12.6 5947 18 8877
22961 11.8 8109 16.7 12102
29819 11.1 10540 15.7 15729
37408 10.5 13227 14.9 19738
45696 10.1 16161 14.2 24115
54658 9.7 19332 13.6 28847
Simulation Diagram
Pressure distribution pattern

Surface temperature chart

Range of Applications
1. Transportation: Electrical locomotive, railway, electric drive vessels, electric cars and so on.
2. Smart grid UHVDC, VSC-HVDC and so on.
3. New energy, wind power converters, photovoltaic power converters and so on.
4. Other industries such as frequency converter, signal processing, UPS, medical appliance, laser and so on.

Feedback Form