# US 2019/0320524 A1 · Pcba with point field detector and magnetic shielding array located on same side of a conductor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0320524 A1 - Document ID: US20190320524A1 - Status: Published application - Kind: A1 - Application number: 15/952,893 - Filed: 2018-04-13 - Published: 2019-10-17 - Earliest claimed: 2018-04-13 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: He Niu; Sainan Xue; Marko Jaksic; Zilai Zhao - Web page: https://patentgrep.com/patent/US20190320524A1 ## CPC - H05K 1/0216: {Reduction of cross-talk, noise or electromagnetic interference (grounding H05K1/0215)} - G01R 15/202: {using Hall-effect devices (Hall elements in arrangements for measuring electrical power G01R21/08)} - G01R 15/207: {Constructional details independent of the type of device used} - G01R 19/0092: {Measuring current only} - H01M 10/4207: {for several batteries or cells simultaneously or sequentially} - H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)} - H01M 10/482: {for several batteries or cells simultaneously or sequentially} - H01M 50/503: characterised by the shape of the interconnectors - H01M 50/519: comprising printed circuit boards [PCB] - H01M 50/522: Inorganic material - H01M 50/569: Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) - H05K 1/0224: {Patterned shielding planes, ground planes or power planes (H05K1/0253 takes precedence)} - H05K 1/181: associated with surface mounted components - H05K 9/0022: {of components mounted on printed circuit boards [PCB] (shields integrated within PCB H05K1/0218; shields integrated within component packages H10W42/20)} - G01R 31/3644: {Constructional arrangements} - H01M 2010/4278: {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller} - H05K 2201/0715: provided by an outer layer of PCB - H05K 2201/083: Magnetic materials - H05K 2201/10151: Sensor - H05K 2201/10272: Busbars, i.e. thick metal bars mounted on the printed circuit board [PCB] as high-current conductors - H05K 2201/10371: Shields or metal cases - H05K 2201/10409: Screws - Y02E 60/10: Energy storage using batteries - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electrical device includes an electrical conductor and a printed circuit board assembly (PCBA). The PCBA includes a planar substrate having first and second primary surfaces. The second primary surface is adjacent to the electrical conductor. A point field detector is mounted to the first primary surface. A magnetic shielding array is constructed of a magnetic material, e.g., having a relative magnetic permeability of about 100-1000. The magnetic shielding array is mounted to or situated on the first and/or second primary surface of the planar substrate, and includes first and second flux shield portions flanking the point field detector. The point field detector and the magnetic shielding array are both located on the same side of the electrical conductor with respect to each other. ## Claims ### Claim 1 An electrical device comprising: an electrical conductor; and a printed circuit board assembly (PCBA) having: a planar substrate having first and second primary surfaces, wherein the second primary surface of the planar substrate is adjacent to the electrical conductor; a point field detector mounted to the first or second primary surfaces of the planar substrate; and a magnetic shielding array constructed of a magnetic material, wherein the magnetic shielding array is situated on at least one of the first and second primary surfaces of the planar substrate, and includes first and second flux shield portions flanking the point field detector, such that the point field detector and the magnetic shielding array are both located on a common or same side of the electrical conductor with respect to each other. ### Claim 2 (depends on 1) The electrical device of claim 1, wherein the electrical conductor is an elongated bus bar constructed of copper. ### Claim 3 (depends on 1) The electrical device of claim 1, wherein the point field detector is a Hall-effect sensor. ### Claim 4 (depends on 3) The electrical device of claim 3, wherein the Hall-effect sensor is centered between the first and second flux shield portions. ### Claim 5 (depends on 4) The electrical device of claim 4, wherein the first and second flux shield portions are separated from each other by a distance of about 12 mm. ### Claim 6 (depends on 1) The electrical device of claim 1, wherein the first and second flux shield portions include a respective planar base portion intersected by first and second radial wall members. ### Claim 7 (depends on 6) The electrical device of claim 6, wherein the second radial wall member extends through the substrate and protrudes from the second primary surface to within 1-2 mm of the conductor. ### Claim 8 (depends on 6) The electrical device of claim 6, wherein each of the respective planar base portions defines a hole, the electrical device further comprising: a pair of fasteners connecting the first and second flux shield portions to the substrate through the hole of the respective base portions. ### Claim 9 (depends on 1) The electrical device of claim 1, wherein the magnetic material has a relative magnetic permeability is in a range of about 100 to about 1000. ### Claim 10 (depends on 1) The electrical device of claim 1, wherein the PCBA is an integrated current sense board and gate drive board. ### Claim 11 A printed circuit board assembly (PCBA) for use with an electrical conductor, the PCBA comprising: a planar substrate having first and second primary surfaces; a point field detector mounted to the first primary surface of the planar substrate; and a magnetic shielding array constructed of a magnetic material, wherein the magnetic shielding array is connected to at least one of the first and second primary surfaces of the planar substrate, and includes first and second flux shield portions flanking the point field sensor; wherein the PCBA is configured such that, when used within the electrical system, the point field detector and the magnetic shielding array are both located on a common or same side of the electrical conductor, and the second primary surface of the planar substrate is adjacent to the electrical conductor. ### Claim 12 (depends on 11) The PCBA of claim 11, wherein the point field detector is a Hall-effect sensor. ### Claim 13 (depends on 12) The PCBA of claim 12, wherein the Hall-effect sensor is centered between the first and second flux shield portions. ### Claim 14 (depends on 13) The PCBA of claim 13, wherein the first and second flux shield portions are separated from each other by a distance of about 12 mm. ### Claim 15 (depends on 11) The PCBA of claim 11, wherein the first and second flux shield portions include a respective planar base portion intersected by first and second radial wall members. ### Claim 16 (depends on 15) The PCBA of claim 15, wherein the second radial wall member extends through the substrate and protrudes from the second primary surface to within about 1-2 mm of the conductor. ### Claim 17 (depends on 16) The PCBA of claim 16, wherein each of the respective planar base portions defines a hole, the electrical device further comprising: a pair of fasteners connecting the first and second flux shield portions to the substrate through the hole of the respective base portions. ### Claim 18 (depends on 11) The PCBA of claim 11, wherein the relative magnetic permeability is in a range of about 100 to about 1000. ### Claim 19 (depends on 11) The PCBA of claim 11, wherein the PCBA is an integrated current sense board and gate drive board.