# US 2018/0323633 A1 · Reception device for wireless charging and terminal device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323633 A1 - Document ID: US20180323633A1 - Status: Published application - Kind: A1 - Application number: 15/695,471 - Filed: 2017-09-05 - Published: 2018-11-08 - Earliest claimed: 2017-05-04 - Assignees: Beijing Sigma Microelectronics Co., Ltd - Applicants: Beijing Sigma Microelectronics Co., Ltd - Inventors: Bingjie CHEN; Zhiqian LI - Web page: https://patentgrep.com/patent/US20180323633A1 ## CPC - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J 50/10: using inductive coupling - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H04B 5/79: for data transfer in combination with power transfer - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION ## Abstract The disclosure discloses a reception device for wireless charging and terminal device. The reception device for wireless charging includes: a coupling coil, arranged to acquire an alternating current signal; a rectifier tube, connected with the coupling coil and arranged to rectify the alternating current signal to obtain a charging current signal, wherein the charging current signal is used to charge a module to be charged; and a first Metal Oxide Semiconductor (MOS) transistor, connected with the rectifier tube and arranged to control switching-on or switching-off of a circuit between the rectifier tube and the module to be charged according to a coding value and transmit coding information corresponding to an on/off state of the circuit to a transmitter. According to the disclosure, the technical problem of complex circuit structure caused by full-bridge rectification adopted by a reception device for wireless charging in the related technology is solved. ## Claims ### Claim 1 A reception device for wireless charging, comprising: a coupling coil, arranged to acquire an alternating current signal; a rectifier tube, connected with the coupling coil and arranged to rectify the alternating current signal to obtain a charging current signal, wherein the charging current signal is used to charge a module to be charged; and a first Metal Oxide Semiconductor (MOS) transistor, connected with the rectifier tube and arranged to control switching-on or switching-off of a circuit between the rectifier tube and the module to be charged according to a coding value and transmit coding information corresponding to an on/off state of the circuit to a transmitter. ### Claim 2 (depends on 1) The reception device for wireless charging as claimed in claim 1, wherein the rectifier tube comprises: a second MOS transistor, of which a first end is connected with the coupling coil and a second end is connected with the first MOS transistor, wherein the second MOS transistor is arranged to rectify the alternating current signal to obtain the charging current signal. ### Claim 3 (depends on 1) The reception device for wireless charging as claimed in claim 1, wherein the rectifier tube comprises: a diode, of which the anode is connected with the coupling coil and the cathode is connected with the first MOS transistor, wherein the diode is arranged to rectify the alternating current signal to obtain the charging current signal. ### Claim 4 (depends on 1) The reception device for wireless charging as claimed in claim 1, further comprising: a controller, connected with the first MOS transistor and arranged to control switching-on or switching-off of the first MOS transistor. ### Claim 5 (depends on 4) The reception device for wireless charging as claimed in claim 4, wherein the controller is arranged to send a coding instruction to the first MOS transistor, wherein the coding instruction indicates to switch on or switch off the first MOS transistor. ### Claim 6 (depends on 5) The reception device for wireless charging as claimed in claim 5, wherein the coding instruction comprises: at least one coding value, wherein the coding value indicates to switch on the first MOS transistor in a first predetermined time period and switch off the first MOS transistor in a second predetermined time period. ### Claim 7 (depends on 4) The reception device for wireless charging as claimed in claim 4, wherein the controller is further connected with the rectifier tube, and is arranged to control switching-on or switching-off of the rectifier tube. ### Claim 8 (depends on 1) The reception device for wireless charging as claimed in claim 1, further comprising: a capacitor, of which a first end is connected with the first MOS transistor and a second end is grounded, wherein the capacitor is arranged to filter the charging current signal. ### Claim 9 (depends on 1) A terminal device, comprising the reception device for wireless charging as claimed in claim 1. ### Claim 10 (depends on 9) The terminal device according to claim 9, wherein the reception device for wireless charging is arranged in the terminal device. ### Claim 11 (depends on 2) The reception device for wireless charging as claimed in claim 2, further comprising: a controller, connected with the first MOS transistor and arranged to control switching-on or switching-off of the first MOS transistor. ### Claim 12 (depends on 3) The reception device for wireless charging as claimed in claim 3, further comprising: a controller, connected with the first MOS transistor and arranged to control switching-on or switching-off of the first MOS transistor. ### Claim 13 (depends on 2) The reception device for wireless charging as claimed in claim 2, further comprising: a capacitor, of which a first end is connected with the first MOS transistor and a second end is grounded, wherein the capacitor is arranged to filter the charging current signal. ### Claim 14 (depends on 3) The reception device for wireless charging as claimed in claim 3, further comprising: a capacitor, of which a first end is connected with the first MOS transistor and a second end is grounded, wherein the capacitor is arranged to filter the charging current signal. ### Claim 15 (depends on 2) A terminal device, comprising the reception device for wireless charging as claimed in claim 2. ### Claim 16 (depends on 3) A terminal device, comprising the reception device for wireless charging as claimed in claim 3. ### Claim 17 (depends on 4) A terminal device, comprising the reception device for wireless charging as claimed in claim 4. ### Claim 18 (depends on 5) A terminal device, comprising the reception device for wireless charging as claimed in claim 5. ### Claim 19 (depends on 6) A terminal device, comprising the reception device for wireless charging as claimed in claim 6. ### Claim 20 (depends on 7) A terminal device, comprising the reception device for wireless charging as claimed in claim 7.