US 12,133,360 B2
Cooling-element part for a cooling element of an electrical drive unit with droplet-shaped pins, cooling element, electrical drive unit and motor vehicle
Thinh Nguyen-Xuan, Erding (DE); and Rene Treffler, Augsburg (DE)
Assigned to Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Filed by Bayerische Motoren Werke Aktiengesellschaft, Munich (DE)
Filed on May 5, 2022, as Appl. No. 17/737,749.
Claims priority of application No. 10 2021 111 826.3 (DE), filed on May 6, 2021.
Prior Publication US 2022/0361369 A1, Nov. 10, 2022
Int. Cl. H05K 7/20 (2006.01)
CPC H05K 7/20272 (2013.01) [H05K 7/20927 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cooling-element part for a cooling element for cooling at least one component of an electrical drive unit of a motor vehicle, the cooling-element part configured to:
join together with a further cooling-element part to form at least one cooling-fluid-carrying cooling duct of the cooling element between the cooling-element and the further cooling-element part, wherein a direction of flow of the cooling fluid relative to the cooling-element part is the same across all cooling-fluid-carrying cooling ducts of the cooling-element part;
wherein the cooling-element part comprises:
a cooling structure configured to increase a flow resistance for cooling fluid by producing turbulences in the flow of the cooling fluid, the cooling structure comprising a plurality of pins that extend at least partially over a height of the cooling duct,
wherein the pins are droplet-shaped having a width that decreases in the direction of the flow of the cooling fluid, and
wherein the cooling structure comprises webs that at least partially extend over a length of the at least one cooling duct along the direction of the flow and are wave-shaped along the direction of the flow.