Vansim (Dongguan)Hardware Products Co., Ltd.
brazed cold plate
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battery cooling brazed cold plate
Ultra-Thin Brazed Cold PlateFor Battery Energy Storage System (BESS) Liquid CoolingStamped Components + Vacuum Brazing process – The Manufacturing BackboneMass production at this thin geometry cannot rely on traditional CNC-machined channels. We use high-speed stamping for both the cover plate and the baseplate, followed by precision vacuum brazing.Stamped Cover & BaseplateProgressive die stamping ensures consistent channel depth (±0.05 mm) and flatness across high-volume runsNo secondary machining on flow paths – reducing cost and lead timeMaterial: corrosion-resistant aluminum (3003 or 6061-series) with optional chromate-free conversion coatingVacuum Brazing – Joint Integrity at 3.0 mmBrazing filler metal (clad layer) is pre-applied on the baseplate; during brazing, capillary flow creates a continuous, void-free bondThe thin wall withstands brazing thermal cycles without warping, thanks to controlled fixture clamping and ramp-rate profilingTypical burst pressure > 2.5 MPa, leak rate < 1×10⁻⁶ mbar·L/s (helium) – reliable for long-term ESS operationBuilt for High-Volume Production & Rugged HandlingAt 3.0 mm, thin plates are prone to denting and warping during transfer. Vansim addresses this with:Custom stacking trays with edge-support ribsAutomated pick-and-place with vacuum grippers (not mechanical clamps)100% flatness check after brazing – out-of-tolerance parts are auto-rejectedAll parts are delivered with protective film on both sides and edge protectors for shipment.We have to also explain our disadvantages to you: The cost for the prototype will be higher, It's will perform well during mass production for the cost.Why Vansim for Your ESS battery brazed Cold PlateProcess maturity: Stamping + brazing line dedicated to thin-walled battery productsFlexible sizing: From 200×150 mm to 1200×600 mm, all with 3.0 mm baseline (other thicknesses available)Quick NPI: Prototype tooling in 4 weeks, production tooling in 6–8 weeksFull traceability: Each plate laser-marked with batch ID linking to stamping press parameters, brazing furnace curve, and leak test results
AI server liquid cooling Brazing cold plate
Higher density fins of copper skived heat sink cover and precision copper base through brazed process come to be a cold plate.
Mass production support for AI servers liquid cooling system.
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