# US 10,320,445 B2 · Communication system and connector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,320,445 B2 - Document ID: US10320445B2 - Status: Granted - Kind: B2 - Application number: 15/526,235 - Filed: 2015-11-06 - Published: 2017-11-16 - Granted: 2019-06-11 - Earliest claimed: 2014-11-14 - Assignees: Autonetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.; Toyota Jidosha Kabushiki Kaisha - Applicants: AutoNetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.; Toyota Jidosha Kabushiki Kaisha - Inventors: Ryo Okada; Takeshi Hagihara; Ryo Tanaka; Nobuyuki Nakagawa; Kengo Hayashizaki - Web page: https://patentgrep.com/patent/US10320445B2 ## CPC - H04B 3/56: Circuits for coupling, blocking, or by-passing of signals - B60L 50/61: by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles - H02J 7/1446: {in response to parameters of a vehicle} - H02J 7/1492: {by means of controlling devices between the generator output and the battery} - H04L 25/0276: {Arrangements for coupling common mode signals} - H04L 25/03: Shaping networks in transmitter or receiver, e.g. adaptive shaping networks - Y02T 10/62: Hybrid vehicles - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H04B: TRANSMISSION - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A communication system comprising: a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle; a reference potential line connected to a reference potential of the vehicle serving as a reference for the control signal; a first PLC communication device connected to the control line and the reference potential line and superposing onto the control signal a differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; and an inductive element which is provided at a point of connection between the reference potential line 1c and the reference potential or provided in the reference potential line and the inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal. ## Claims ### Claim 1 A communication system comprising: a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle; a reference potential line connected to a reference potential; a communication device connected to the control line and the reference potential line serving as a transmission medium of a differential signal and superposing onto the control signal the differential signal having a higher frequency than the control signal so as to perform communication with an external power supply apparatus; and an inductive element which is provided at a point of connection between the reference potential line and the reference potential or provided in the reference potential line, wherein an impedance of the inductive element for a noise is higher than an impedance of the inductive element for the control signal, the control signal having a lower frequency than the noise. ### Claim 2 (depends on 1) The communication system according to claim 1, comprising a connector for connecting the control line and the reference potential line to a charging cable of the external power supply apparatus, wherein the inductive element is arranged inside the connector. ### Claim 3 (depends on 2) The communication system according to claim 2, comprising a second reference potential line branching off from the reference potential line, wherein the inductive element is provided in the second reference potential line, and wherein the connector includes: a circuit board holding the inductive element; and a cover made of resin and covering the circuit board holding the inductive element. ### Claim 4 (depends on 3) The communication system according to claim 3, wherein the connector includes: a filter separating the differential signal from the control signal; and a coupling transformer connected to the filter, and wherein the cover is constructed such as to cover the filter and the coupling transformer. ### Claim 5 (depends on 1) The communication system according to claim 1, comprising a receiving circuit connected to the control line so as to receive a control signal transmitted from the external power supply apparatus. ### Claim 6 (depends on 5) The communication system according to claim 5, comprising a second inductive element which is provided in a wire connecting the receiving circuit to the reference potential and the second inductive element having impedance for a noise having a higher frequency than the control signal is higher than the impedance for the control signal. ### Claim 7 A connector provided with a control line transmitting a control signal for controlling charging of a battery mounted on a vehicle and with a reference potential line connected to a reference potential, so as to connect the control line and the reference potential line to a charging cable of an external power supply apparatus, comprising: a second reference potential line branching off from the reference potential line; and an inductive element which is provided in the second reference potential line, wherein an impedance of the inductive element for a noise is higher than an impedance of the inductive element for the control signal, the control signal having a lower frequency than the noise.