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Power Liquid Cooling Plates Have Three Core Requirements: Excellent Heat Dissipation

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Power Liquid Cooling Plates Have Three Core Requirements: Excellent Heat Dissipation

Name: Power Liquid Cooling Plates Have Three Core Requirements Excellent Heat Dissipation
Brand: Uchi
Price: 1300 USD

Brand Name : Uchi

Model Number : Heat Sink

Certification : SMC

Place of Origin : Dongguan，Guangdong,China

MOQ : 100pcs

Price : 1300-1500 dollars

Payment Terms : T/T，paypal， Western Union,MoneyGram

Supply Ability : 50000000pcs per Month

Delivery Time : not limited

Mountingtype : Screw mounting or adhesive

Noise : 17dbA

Thermal Dissipation Power : 2000W

Ip Rating : IP65

Coolant Type : Ethylene glycol solution or silicone oil

Packaging Box Size : 42.5*33*18CM

Input Voltage : 24V DC

Inletdiameter : 1/4 inch or customized

Surfacefinish : Nickel-plated or bare metal

Compatibility : Suitable for CPUs, GPUs, power electronics

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Power Liquid Cooling Plate

Power liquid cooling plate refers to a high-power liquid cooling heat sink specially designed for power electronic equipment. It is mainly used in scenarios such as photovoltaic inverters, wind power converters, SVG, high-voltage inverters, PCS energy storage converters, and high-voltage power transmission and transformation equipment.

It features high pressure resistance, large current carrying capacity, high reliability, long service life and corrosion resistance, belonging to industrial-grade / power-grade water cooling components.

I. Typical Application Equipment

Photovoltaic inverters / central inverters
Wind power converters, full-power converters
Energy storage converters (PCS)
High-voltage inverters, transmission devices
Static Var Generators (SVG)
Flexible HVDC (MMC), converter valves
High-power rectifier power supplies, electroplating / electrolysis power supplies
Charging piles, power units of ultra-fast charging modules

Core heat dissipation targets: IGBTs, SiC power modules, diodes, reactors, power resistors, etc.

II. Core Design Features

High power and high heat flux density

Single module power often ranges from dozens of kW to hundreds of kW with high heat flux density, requiring low flow resistance and high heat exchange efficiency.
High pressure resistance and anti-leakage

Power equipment operates continuously for a long time, requiring a water pressure resistance of 3–10 bar.

Must pass helium mass spectrometer leak detection with nearly zero leakage.
Reasonable flow channel design

Commonly used designs:
- Single / double-layer serpentine flow channels
- Multi-branch parallel flow channels
- Turbulators / pin fins for enhanced heat transfer
  
  Ensures temperature uniformity and avoids local hotspots that cause equipment failure.
Material selection and corrosion protection

Mainstream materials: aluminum alloy 5052 / 3003 / 6061

For poor water quality, coastal or chemical environments, surface treatments include:
- Anodizing
- Electrophoretic coating
- Internal anti-corrosion coating
  
  Prevents scaling, corrosion and water leakage.
Structural strength and anti-vibration

Thick base plate and stiffener design to avoid deformation during vibration, transportation and long-term operation of power equipment.

III. Mainstream Manufacturing Processes

Tube-embedded liquid cooling plate

Copper / aluminum tubes embedded in aluminum plates

Low cost, mature and stable

Suitable for low-to-medium power conventional power equipment
Vacuum brazed liquid cooling plate

Multi-layer plates and flow channels formed by brazing

Strong heat exchange, good flatness

Suitable for high-power IGBT / SiC modules
Friction stir welded liquid cooling plate

Large size, high reliability

Suitable for high-power wind and photovoltaic equipment
Skived / machined integrated type

High strength, flexible flow channel design

Mostly used for customized power cabinet cooling

IV. Key Performance Indicators (Common in Power Industry)

Working pressure: 3–6 bar
Bursting pressure: ≥ 9 bar
Leak detection standard: Helium leak rate ≤ 1×10⁻⁸ Pa·m³/s
Temperature resistance: -40℃ ~ 120℃
Surface flatness: ≤ 0.1 mm (for power module mounting)
Roughness: Ra ≤ 1.6–3.2
Inlet & outlet ports: G1/4, G3/8, G1/2 threads or quick-connect connectors

V. Differences from Standard Liquid Cooling Plates

Operating life: 20 years of uninterrupted service, not for short-term equipment
Environment: high temperature, high humidity, dust, coastal salt spray
Safety: liquid leakage directly causes high-voltage short circuits, failures and blackouts, requiring extremely high reliability
Maintenance: low-maintenance or maintenance-free design

VI. Brief Summary

Power liquid cooling plate is the "special heat dissipation base plate" for power electronic equipment.

Its core requirements can be summarized in three points: strong heat dissipation, no liquid leakage, and long service life.

Strong Heat Dissipation – Core: Low Thermal Resistance, High Efficiency, No Hotspots

Optimized flow channel design maximizes heat exchange area and minimizes thermal resistance, supporting continuous full-load cooling for high-power IGBT/SiC modules.

Excellent temperature uniformity eliminates local hotspots, preventing power derating or component failure.

Reasonable flow resistance matches the working conditions of the system water pump, ensuring stable heat dissipation efficiency under high flow rates.
No Liquid Leakage – Core: Reliable Sealing, Zero Leakage

High-strength welding processes such as vacuum brazing or friction stir welding are adopted to form an integrated, monolithic structure.

Continuous welds with no cold joints or pores deliver high pressure resistance and resist fatigue cracking during long-term operation.

100% helium mass spectrometer leak testing is performed before delivery, strictly controlling the leakage rate to prevent short circuits and burnout of power equipment caused by liquid leakage.
Long Service Life – Core: Longevity, High Reliability

Materials resist corrosion and scaling, adapting to industrial, power grid and automotive water quality environments.

High structural strength provides vibration and impact resistance, supporting uninterrupted long-term operation.

Excellent resistance to high and low temperature cycles and thermal fatigue, with a design life matching the 10–20 year long-term service of power equipment.

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