Natural Convection Heat Sinks for Wall-Mounted Home ESS
Fanless home storage units that move heat with fin geometry and a chimney effect.
Requirement
The customer builds wall-mounted home storage units with no fan, relying on natural convection, often installed with very little clearance behind the unit. Their previous sink had tight pitch and short fins, so battery compartment temperature rose in summer and the unit derated.
Our approach
Pitch was opened to suit natural convection and fin height raised to lengthen the chimney path. Fins run vertically along gravity so nothing blocks the flow, thermal pads bridge the base to the module, and the mounting face is milled flat. The back of the unit keeps a continuous bottom-in, top-out channel.
Delivery and inspection
Five samples for full-unit temperature comparison, then production sampled on fin height and pitch.
Project summary
Battery compartment temperature dropped at the same ambient and summer derating events fell. The construction is now standard on wall-mounted models, with fin height scaled by power.
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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