# US 2025/0331125 A1 · Electronics packaging assembly for facilitating heat transfer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0331125 A1 - Document ID: US20250331125A1 - Status: Published application - Kind: A1 - Application number: 18/870,192 - Filed: 2023-05-31 - Published: 2025-10-23 - Earliest claimed: 2022-05-31 - Assignees: Cummins Power Generation Inc. - Applicants: Cummins Power Generation Inc. - Inventors: Ikenna Oguguo; Lane Lester Woodland; Adam James Bower; Nicholas William Shatek; Steve N. Seidlitz; Wangwei Zhou; Joel N. Robinson; Pushkar U. Vaidya; Subbarao Dakshina Murthy Bellur - Web page: https://patentgrep.com/patent/US20250331125A1 ## CPC - H05K 7/20145: {Means for directing air flow, e.g. ducts, deflectors, plenum or guides} - H05K 7/20163: {the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels} - H05K 7/20172: {Fan mounting or fan specifications} - H05K 7/20918: {the components being isolated from air flow, e.g. hollow heat sinks, wind tunnels or funnels} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An electronics packaging assembly configured to facilitate heat transfer includes a housing having an electronics compartment configured to house at least one electronic component therein. The electronics packaging assembly also includes a cooling system. The cooling system extends from a first side of the housing to a second side of the housing and includes an air duct defining an air channel for air flow, an air duct inlet coupled to the first side of the housing, an air duct outlet coupled to the second side of the housing, and a plurality of fins exposed from the housing. A first portion of the electronics compartment is coupled to a top surface of the cooling system and a second portion is coupled to a bottom surface. The cooling system dissipates heat from both portions of the electronics compartment coupled to the cooling system. ## Claims ### Claim 1 An electronics packaging assembly configured to facilitate heat transfer, the electronics packaging assembly comprising: a housing including an electronics compartment configured to house at least one electronic component therein; and a cooling system extending from a first side of the housing to a second side of the housing opposite the first side, the cooling system comprising: an air duct defining an air channel for air flow, an air duct inlet coupled to the first side of the housing, an air duct outlet coupled to the second side of the housing, and a plurality of fins exposed from the housing, the electronics compartment being configured such that a first portion of the electronics compartment is coupled to a top surface of the cooling system and a second portion of the electronics compartment is coupled to a bottom surface of the cooling system, and the cooling system being configured to facilitate heat transfer by dissipating heat from both the first portion of the electronics compartment coupled to the top surface of the cooling system and the second portion coupled to the bottom surface of the cooling system. ### Claim 2 (depends on 1) The electronics packaging assembly according to claim 1, wherein the housing includes an outer frame and an inner frame suspended within the outer frame, the air duct inlet is coupled to the outer frame at the first side; the air duct outlet is coupled to the outer frame at the second side, and at least a portion of the electronics compartment is disposed within the inner frame. ### Claim 3 (depends on 2) The electronics packaging assembly according to claim 2, further comprising a plurality of isolators disposed between the inner frame and the outer frame configured to suspend the inner frame within the outer frame and to reduce vibration of the electronics packaging assembly. ### Claim 4 (depends on 1) The electronics packaging assembly according to claim 1, wherein at least one of the air duct inlet or the air duct outlet includes an inlet fan or an outlet fan, respectively, to allow air flow through the air channel. ### Claim 5 (depends on 1) The electronics packaging assembly according to claim 1, wherein the cooling system further comprises a circulation fan disposed within the electronics compartment. ### Claim 6 (depends on 1) The electronics packaging assembly according to claim 1, wherein an operating temperature range of the electronics packaging assembly is approximately −25° F. to 125° F., inclusive. ### Claim 7 (depends on 1) The electronics packaging assembly according to claim 1, wherein a noise level of the electronics packaging assembly is maintained below an audible threshold within an area extending approximately twenty meters away from and surrounding the electronics packaging assembly. ### Claim 8 (depends on 1) The electronics packaging assembly according to claim 1, wherein the air duct includes a non-uniform surface configured to increase turbulence of the air flow. ### Claim 9 (depends on 1) The electronics packaging assembly according to claim 1, wherein the air duct is a copper heat pipe inlay. ### Claim 10 (depends on 1) The electronics packaging assembly according to claim 1, wherein the cooling system includes thermally conductive encapsulants disposed on a surface of the air duct. ### Claim 11 (depends on 1) The electronics packaging assembly according to claim 1, wherein the first portion of the electronics compartment includes a direct current transformer and a first voltage direct current power stage, and the second portion of the electronics compartment includes a second direct current power stage that is higher in voltage than the first voltage direct current power stage and a direct current to alternating current inverter. ### Claim 12 A method for cooling an electronics packaging assembly, the electronics packaging assembly including a housing including an electronics compartment configured to house at least one electronic component therein; and a cooling system extending from a first side of the housing to a second side of the housing opposite the first side, the cooling system including an air duct defining an air channel for air flow, an air duct inlet coupled to the first side of the housing, an air duct outlet coupled to the second side of the housing, and a plurality of fins exposed from the housing, a first portion of the electronics compartment coupled to a top surface of the cooling system and a second portion coupled to a bottom surface of the cooling system, the method comprising: transferring heat from the first portion of the electronics compartment to the cooling system; transferring heat from the second portion of the electronics compartment coupled to the bottom surface of the cooling system to the cooling system; passing air flow through the air channel; and dissipating heat, by the plurality of fins, from the electronics packaging assembly to an exterior environment via the plurality of fins. ### Claim 13 (depends on 12) The method according to claim 12, wherein the passing comprises forcing air to flow through the air channel, using at least one of an inlet fan or an outlet fan coupled to the air duct inlet or the air duct outlet, respectively. ### Claim 14 (depends on 12) The method according to claim 12, wherein the passing comprises circulating air within the electronics compartment using a circulation fan disposed within the electronics compartments. ### Claim 15 (depends on 12) The method according to claim 12, further comprising increasing turbulence of the air flow along at least a portion of the air duct. ### Claim 16 A method for manufacturing an electronics packaging assembly, the electronics packaging assembly including a housing including an electronics compartment configured to house at least one electronic component therein; and a cooling system including an air duct, an air duct inlet, an air duct outlet, and a plurality of fins, the method comprising: disposing the cooling system within the housing such that the air duct extends from a first side of the housing to a second side of the housing opposite the first side; exposing the air duct inlet and the air duct outlet from the housing to define an air channel through the air duct; coupling a first portion of the electronics compartment to a top surface of the cooling system and a second portion to a bottom surface of the cooling system; and exposing the plurality of fins from the housing. ### Claim 17 (depends on 16) The method according to claim 16, further comprising: coupling at least one of an inlet fan or an outlet fan to at least one of the air duct inlet or the air duct outlet, respectively. ### Claim 18 (depends on 16) The method according to claim 16, further comprising: disposing a circulation fan within the electronics compartment to provide air circulation within the electronics compartment. ### Claim 19 (depends on 16) The method according to claim 16, further comprising: adjusting a direct current power supply by a direct current transformer and providing a first voltage direct current power stage in the first portion of the electronics compartment coupled to the top surface of the cooling system; and generating a second voltage direct current power stage higher in voltage than the first voltage direct current power stage and converting a direct current to alternating current by an inverter in the second portion of the electronics compartment coupled to the bottom surface of the cooling system. ### Claim 20 (depends on 16) The method according to claim 16, further comprising: coupling an electromagnetic interference (EMI) filter assembly to the housing, the EMI filter assembly being configured to resist electromagnetic interference.