# US 12,119,672 B2 · Electromagnetic field transceiver device and wireless charging device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,672 B2 - Document ID: US12119672B2 - Status: Granted - Kind: B2 - Application number: 17/322,473 - Filed: 2021-05-17 - Published: 2021-11-25 - Granted: 2024-10-15 - Earliest claimed: 2020-05-22 - Assignees: Delta Electronics (Shanghai) Co., Ltd. - Applicants: Delta Electronics (Shanghai) Co., Ltd. - Inventors: Jianhong Zeng; Benze Zou; Tao Ye; Lei Zhang; Shun Zhang - Web page: https://patentgrep.com/patent/US12119672B2 ## CPC - H02J 50/20: using microwaves or radio frequency waves - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - H01F 27/025: {Constructional details relating to cooling} - H01F 27/366: {made of ferromagnetic material} - H01F 38/14: Inductive couplings - H02J 50/10: using inductive coupling - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract The present disclosure provides an electromagnetic field transceiver device and a wireless charging device, including: a cover body, a selective shielding cover, a sealing ring and a transceiver unit. The selective shielding cover is provided with an electromagnetic field transceiver window that selectively shields an electric field and/or a magnetic field. The sealing ring sleeves the cover body. The selective shielding cover is seamlessly connected to an opening of the cover body relative to the electric field or the magnetic field through the sealing ring, the selective shielding cover and the cover body form a cavity. The sealing ring is electrically connected to the selective shielding cover, and the sealing ring encloses the electromagnetic field transceiver window. The transceiver unit is provided in the cavity. The transceiver unit is configured to receive or transmit a target electromagnetic field. ## Claims ### Claim 1 An electromagnetic field transceiver device, comprising: a cover body; a selective shielding cover, provided with an electromagnetic field transceiver window which selectively shields an electric field and/or a magnetic field; a sealing ring, the selective shielding cover being seamlessly connected to an opening of the cover body relative to the electric field or the magnetic field through the sealing ring, the selective shielding cover and the cover body forming a cavity, the sealing ring being electrically connected to the selective shielding cover, and the sealing ring enclosing the electromagnetic field transceiver window; and a transceiver unit, provided in the cavity and configured to receive or transmit a target electric field and/or the magnetic field; wherein the sealing ring comprises: at least two sealed conductive units, which are arranged at intervals, and each of which is electrically connected to the opening of the cover body, wherein the sealed conductive unit is electrically connected to an edge of the opening of the cover body through a conductive junction, the conductive junction being grounded. ### Claim 2 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the sealing ring sleeve the cover body. ### Claim 3 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the cover body comprises at least one side edge forming the opening, and one end of the at least one side edge connected to the sealing ring comprises at least one groove. ### Claim 4 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the selective shielding cover is provided with a selective shielding region, the selective shielding region comprises at least one metal conductor, and one end of each metal conductor is electrically connected to one side edge of the sealing ring. ### Claim 5 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein a conducting layer is provided between the sealing ring and the cover body. ### Claim 6 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein a selective shielding coating is coated on a surface of the selective shielding cover, and the selective shielding coating covers the electromagnetic field transceiver window. ### Claim 7 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the sealing ring comprises a first connecting portion, and a second connecting portion which are central symmetric; the selective shielding cover is provided with a selective shielding region, on a surface of the selective shielding region are provided at least one first metal conductor and at least one second metal conductor, a first end of each first metal conductor is electrically connected to the first connecting portion, a second end of each second metal conductor is electrically connected to the second connecting portion, and the at least one first metal conductor and the at least one second metal conductor are alternately arranged at intervals. ### Claim 8 (depends on 7) The electromagnetic field transceiver device of claim 7, wherein a total area of orthographic projections of the at least one first metal conductor and the at least one second metal conductor on the selective shielding cover is less than one tenth of an area of the electromagnetic field transceiver window. ### Claim 9 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the sealing ring comprises a first connecting portion, and a second connecting portion which are central symmetric; the selective shielding cover is provided with a selective shielding region, on a surface of the selective shielding region are provided at least one first metal conductor, at least one second metal conductor, and at least one metal ring which is arranged in an array, and the at least one metal ring in each column is electrically connected to one first metal conductor or one second metal conductor, a first end of each first metal conductor is electrically connected to the first connecting portion, a second end of each second metal conductor is electrically connected to the second connecting portion, and the at least one first metal conductor and the at least one second metal conductor are alternately arranged at intervals. ### Claim 10 (depends on 9) The electromagnetic field transceiver device of claim 9, wherein a total area of orthographic projections of the at least one metal ring, the at least one first metal conductor and the at least one second metal conductor on the selective shielding cover is less than one tenth of an area of the electromagnetic field transceiver window. ### Claim 11 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the selective shielding cover is provided with a selective shielding region, on a surface of the selective shielding region are provided at least one first metal conductor or at least one second metal conductor arranged at intervals, at least one spacing region is provided in a selective shielding pattern formed by the at least one first metal conductor or the at least one second metal conductor, one end of each first metal conductor or each second metal conductor is electrically connected to the sealing ring, and the other end of each first metal conductor or each second metal conductor is suspended in the spacing region. ### Claim 12 (depends on 11) The electromagnetic field transceiver device of claim 11, wherein a third metal conductor is further provided on a surface of the selective shielding region, one end of each third metal conductor is electrically connected to a first metal conductor or a second metal conductor. ### Claim 13 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the selective shielding cover is provided with a selective shielding region, on a surface of the selective shielding region are provided at least one non-closed curled fourth metal conductor arranged at intervals, and one end of each fourth metal conductor is electrically connected to the sealing ring, and/or, one end of each fourth metal conductor is electrically connected to the sealing ring through another fourth metal conductor. ### Claim 14 (depends on 1) The electromagnetic field transceiver device of claim 1, wherein the sealing ring comprises a first connecting portion, and a second connecting portion which are central symmetric; the selective shielding cover is provided with a selective shielding region, on a surface of the selective shielding region are provided at least one first metal conductor and at least one second metal conductor, and the at least one first metal conductor and the at least one second metal conductor are at least partially fitted with each other. ### Claim 15 (depends on 1) A wireless charging device, comprising: the electromagnetic field transceiver device of claim 1, wherein the selective shielding cover is connected to the opening of the cover body in a sealing manner; and a driving circuit, provided in the cavity and electrically connected to the transceiver unit, and configured to drive the transceiver unit to receive or transmit the target electric field and/or the magnetic field through the electromagnetic field transceiver window. ### Claim 16 (depends on 15) The wireless charging device of claim 15, wherein the transceiver unit comprises: a substrate, fixed in the cavity; and a coil winding, fixed on a side of the substrate facing the selective shielding cover and electrically connected to the driving circuit, and configured to receive or transmit the target electric field and/or the magnetic field through the electromagnetic field transceiver window. ### Claim 17 (depends on 16) The wireless charging device of claim 16, wherein the selective shielding cover is provided with a selective shielding region, and the selective shielding region covers an orthographic projection of the coil winding on the selective shielding cover. ### Claim 18 (depends on 16) The wireless charging device of claim 16, wherein an additional shielding layer is provided on a surface of a side of the selective shielding cover facing the cover body, and at least part of an orthographic projection of the additional shielding layer on the substrate coincides with an orthographic projection of the coil winding on the substrate. ### Claim 19 (depends on 18) The wireless charging device of claim 18, wherein the additional shielding layer is provided with a near-field communication line and/or a thermistor temperature sampling line. ### Claim 20 (depends on 16) The wireless charging device of claim 16, further comprising: a heat conducting support plate, provided in the cavity and fixedly connected to the cover body, and attached to a side of the substrate away from the coil winding.