Fluid coolers are highly efficient thermal management solutions designed to dissipate large amounts of heat within limited installation space. They are widely used for cooling high-power electronic devices and power modules in industries such as industrial automation, renewable energy, rail transit, telecommunications, aerospace, and electric vehicles
These cooling systems are suitable for water-based cooling circuits with a pH range of 6.5 ~ 8.5 containing anti-corrosion additives, as well as other cooling media such as oils and alcohol-based fluids.
Fluid Cooling SystemsThe compact construction combined with optimized internal fin structures provides excellent heat transfer performance between the cooling fluid and the heat-generating components.
The internal flow channels are engineered to minimize pressure drop while maintaining high thermal efficiency, making the system suitable for high-power density applications where installation space is limited.
Fluid coolers are designed with thick base plates to ensure:
Efficient heat spreading
Uniform temperature distribution
Reliable mounting of heat-emitting components
Improved thermal stability under high loads
The component mounting surfaces are precision face-milled, offering:
Excellent flatness
Low surface roughness
Improved thermal interface contact
This ensures reliable thermal transfer between the cooling plate and the mounted power devices.
Depending on the application requirements, the cooling plates can be configured with:
I-flow design
U-flow design
Multi-pass flow channels
Connection options include:
Ø12 mm hose ports with reinforced seams according to DIN 71550
Threaded connections (e.g. 1/8")
Custom mounting flanges based on customer specifications
The cooling systems can operate at pressures up to 3 bar.
Fluid coolers are suitable for a wide range of high-power thermal management applications, including:
IGBT modules
Thyristor modules
SCR diode modules
Bridge rectifiers
Power converters
Industrial power electronics
Renewable energy systems
Telecom equipment
Automotive and EV systems
To prevent corrosion and ensure long-term reliability, the cooling system must operate in a closed-loop circuit.
The coolant should contain:
40–60% anti-corrosion additive for aluminum systems
Recommended concentration: 50%
Anti-freeze additives where necessary
Typical coolant mixtures include:
Water/Glycol mixtures (e.g. 60/40)
All hoses and sealing materials used within the cooling circuit must be compatible with anti-corrosion fluids. EPDM hose materials compliant with DIN 73411 / ISO 4081 are recommended.
The selection and approval of the cooling fluid remain the responsibility of the user. Improper coolant selection may result in corrosion or damage to the cooling system.
Recooling systems are available for all types of liquid cooling solutions and are designed to remove excess heat from the coolant circuit efficiently.
The recooling unit typically consists of:
A single-stage centrifugal circulation pump
A liquid-to-air recooler
Electrically driven fan motors
Tube-and-fin heat exchanger structure
The system is capable of dissipating thermal losses of up to 6,600 W.
Q(W) Air/Water Exchanger Prefomance| Geometry Length*Width*Overall Height(mm) |
[200 ~ 1500mm] x [200 ~ 800mm] x [8-30mm] |
| Heat transfer performance | 10 KW ~ 120 KW |
| Operating temperature | -30°C ~ 65℃ |
| Connector pattern | Brazing or argon arc welding |
| Planeness | >0.05mm(100mm x 100mm) |
| Roughness | <1.6μm |
| Coolant | Pure water or a mixture of water and glycol |
| Max. operating pressure | 0.6MPa ~ 3.0MPa |
| Thermal resistance (Rth C/W) | < 2 C/kW |
| Flow rate | < 60 ~ 80L/min |
| Surface | Natural/Anodize/Nickel plating |
Cooling plates and fluid coolers can be fully customized according to customer requirements, including:
Dimensions
Mounting interfaces
Flow path design
Material selection
Pressure requirements
Thermal performance targets
This flexibility allows optimized thermal management solutions for demanding industrial and electronic applications.
| Structure | Processing | Feature |
| Machined Cold Plates |
Deep hole drilling by CNC sealing the part of region with a plug and the welding CNC Final machining |
Simple manufacturing process, low cost in volume production,suitable for low performance dissipation |
| Bonded Cold Plates |
CNC or die-casting Al base/cover plate and water channels" Sealing by O-rings and glues |
CNC or die-casting Al base/cover plate and water channels" Sealing by O-rings and glues |
| Friction Stir Welding |
CNC machining the base/cover plate Friction welding/Electron beam weld the base and cover plates together ,CNC final machining |
Complex process, diverse design, high heat dissipation performance and high manufacturing cost |
| Copper * Aluminum Tube Liquid Cooled Plate |
Milling groove or by CNC The bended pipe is welded /stamped/glued in the groove CNC final machining |
Simple to manufacturing process; low cost in volume Production and low performance |