# US 12,604,430 B2 · Systems for integrating choke into inverter header sub-assembly for improving EMC performance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,430 B2 - Document ID: US12604430B2 - Status: Granted - Kind: B2 - Application number: 18/494,390 - Filed: 2023-10-25 - Published: 2025-03-13 - Granted: 2026-04-14 - Earliest claimed: 2023-09-12 - Assignees: BorgWarner US Technologies LLC - Applicants: BorgWarner US Technologies LLC - Inventors: Jun Jie How; Kin Yean Chow; Edmund Lim; HongJun Luo; Yew Ming Chong - Web page: https://patentgrep.com/patent/US12604430B2 ## CPC - H05K 7/14322: {wherein the control and power circuits of a power converter are arranged within the same casing} - H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)} - H02K 5/24: specially adapted for suppression or reduction of noise or vibrations - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) ## Abstract An inverter assembly may include a housing with a base and side walls, wherein one of the side walls includes an opening extending through the wall, and wherein the side walls form a periphery around an interior of the housing. An inverter assembly may include a header with a body, the body having a first end and a second end, wherein the body further includes a flange disposed between the first end and the second end, and wherein a portion of the body extends through the opening such that the flange abuts the side wall. An inverter assembly may include a bracket positioned within the interior of the housing and coupled to the housing. An inverter assembly may include a choke that is fully enclosed in a circumferential direction, wherein the choke is positioned within the bracket and against an inner surface of the bracket facing the opening. ## Claims ### Claim 1 An inverter assembly comprising: a housing having a base and a plurality of side walls extending away from the base, wherein a first side wall of the plurality of side walls includes an opening extending through the first side wall, and wherein the plurality of side walls form a periphery around an interior of the housing; a header with a body, the body having a first end and a second end, wherein the body further includes a flange disposed between the first end and the second end, and wherein a portion of the body extends through the opening such that the flange abuts the first side wall; a bracket positioned within the interior of the housing, and wherein the bracket is coupled to an inner surface of the housing; a choke, wherein the choke is positioned within the bracket and against an inner surface of the bracket facing the opening, and wherein the choke is fully enclosed in a circumferential direction of the choke by the bracket along an entire axial length of the choke; and a spacer positioned between the header and the choke at the second end of the body of the header, wherein the spacer is fully enclosed in a circumferential direction of the spacer by the bracket along an entire axial length of the spacer. ### Claim 2 (depends on 1) The inverter assembly of claim 1, wherein the choke has an enclosed channel extending through the choke. ### Claim 3 (depends on 1) The inverter assembly of claim 1, wherein the coupling between the bracket and the inner surface of the housing includes a seal. ### Claim 4 (depends on 1) The inverter assembly of claim 1, wherein the bracket is coupled to the inner surface of the housing at more than one location. ### Claim 5 (depends on 4) The inverter assembly of claim 4, wherein each coupling is coupled by an M4 screw. ### Claim 6 (depends on 1) The inverter assembly of claim 1, wherein the inverter assembly further comprises a spacer that is disposed between the header and the choke, and wherein the spacer is fully enclosed in the circumferential direction. ### Claim 7 (depends on 6) The inverter assembly of claim 6, wherein the spacer comprises a foam material. ### Claim 8 (depends on 6) The inverter assembly of claim 6, wherein the spacer has an enclosed channel extending through the spacer. ### Claim 9 (depends on 6) The inverter assembly of claim 6, wherein the spacer directly contacts the header and the choke. ### Claim 10 (depends on 6) The inverter assembly of claim 6, wherein the choke is fixed relative to the housing, header, bracket, and spacer. ### Claim 11 (depends on 6) The inverter assembly of claim 6, wherein the spacer is fixed relative to the housing, header, bracket, and choke. ### Claim 12 (depends on 6) The inverter assembly of claim 6, wherein the choke has an enclosed channel extending through it and the spacer has an enclosed channel extending through it such that the enclosed channel of the choke and the enclosed channel of the spacer are in communication with one another. ### Claim 13 (depends on 6) The inverter assembly of claim 6, wherein the choke has an enclosed channel extending through it, the spacer has an enclosed channel extending through it, and the bracket has a channel extending through it such that the enclosed channel of the choke, the enclosed channel of the spacer, and the channel of the bracket are in communication with one another. ### Claim 14 (depends on 13) The inverter assembly of claim 13, wherein wiring extends from the header through the enclosed channel of the choke, the enclosed channel of the spacer, and the channel of the bracket. ### Claim 15 (depends on 1) The inverter assembly of claim 1, wherein the choke is a ferrite choke. ### Claim 16 An inverter comprising: a housing having a base and a plurality of side walls extending away from the base, wherein a first side wall of the plurality of side walls includes an opening extending through the first side wall, and wherein the plurality of side walls form a periphery around an interior of the housing; a header with a body, the body having a first end and a second end, wherein the body further includes a flange disposed between the first end and the second end, and wherein a portion of the body extends through the opening such that the flange abuts the first side wall; a bracket positioned within the interior of the housing, and wherein the bracket is coupled to an inner surface of the housing; a choke, wherein the choke is positioned within the bracket and against an inner surface of the bracket facing the opening, and wherein the choke is fully enclosed in a circumferential direction of the choke by the bracket along an entire axial length of the choke; a spacer positioned between the header and the choke at the second end of the body of the header, wherein the spacer is fully enclosed in a circumferential direction of the spacer by the bracket along an entire axial length of the spacer; and power electronics configured to convert direct current to alternating current. ### Claim 17 (depends on 16) The inverter of claim 16, wherein the choke is a ferrite choke. ### Claim 18 (depends on 16) The inverter of claim 16, wherein the choke has an enclosed channel extending through it, the spacer has an enclosed channel extending through it, and the bracket has a channel extending through it such that the enclosed channel of the choke, the enclosed channel of the spacer, and the channel of the bracket are in communication with one another. ### Claim 19 (depends on 18) The inverter of claim 18, wherein wiring extends from the header through the enclosed channel of the choke, the enclosed channel of the spacer, and the channel of the bracket such that the wiring connects the power electronics.