Long Base Plates for Container ESS Power Conversion Units
Long heat sink base plates for 20-foot container energy storage, one construction covering several device layouts.
Requirement
In the customer’s container ESS, PCS power units run along the cabinet depth, so the base plate spans more than a metre. Three problems followed: long parts warp after cutting and milling, devices sit at different heights so the mounting face needs steps, and site space only allows airflow from one side.
Our approach
The plate uses a dedicated heat sink profile cut to cabinet depth, straightened before cutting. Device zones are stepped by height with fillets between steps to limit stress. Fins are denser on the inlet side and wider on the return to form a directional duct. Supports run the full length during machining so nothing sags.
Delivery and inspection
First batch of 12 with flatness and step-height records; crated in layers for long-haul transport without distortion.
Project summary
Warping is under control and device faces seat on the first assembly. The same construction covered a revised power unit by changing step height only, with no new tooling.
Products used in this project
For a similar project, send your drawing — we will check whether the existing construction can be reused or needs redesign.
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