# US 9,751,412 B2 · Cable installment type charging control device and method of operating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,412 B2 - Document ID: US9751412B2 - Status: Granted - Kind: B2 - Application number: 14/660,737 - Filed: 2015-03-17 - Published: 2015-09-24 - Granted: 2017-09-05 - Earliest claimed: 2014-03-19 - Assignees: Lsis Co., Ltd. - Applicants: Lsis Co., Ltd. - Inventors: Chang Jun Im - Web page: https://patentgrep.com/patent/US9751412B2 ## CPC - B60L 3/0069: {relating to the isolation, e.g. ground fault or leak current} - B60L 3/04: Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) - B60L 53/14: Conductive energy transfer - B60L 53/16: Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles - B60L 53/18: Cables specially adapted for charging electric vehicles - B60L 53/305: {Communication interfaces} - B60L 53/65: involving identification of vehicles or their battery types - B60L 2210/30: AC to DC converters - B60L 2240/36: Temperature of vehicle components or parts - B60L 2240/667: Precipitation - B60L 2240/70: Interactions with external data bases, e.g. traffic centres - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - Y02T 10/72: Electric energy management in electromobility - Y02T 90/12: Electric charging stations - Y02T 90/14: Plug-in electric vehicles - Y02T 90/16: Information or communication technologies improving the operation of electric vehicles - Y02T 90/167: Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV] - Y04S 30/14: Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS ## Abstract A cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side is provided. The cable installment type charging control device includes a first relay delivering power of the grid-side to an EV-side, a second relay delivering power of the grid-side to the EV-side, a first sub fusion detecting unit for detecting whether the first relay is fused through an-EV side terminal of the first relay and a grid-side terminal of the second relay, and a second sub fusion detecting unit for detecting whether the second relay is fused through an-EV side terminal of the second relay and a grid-side terminal of the first relay. ## Claims ### Claim 1 A cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side, the cable installment type charging control device comprising: a first relay delivering power of the grid-side to an EV-side; a second relay delivering power of the grid-side to the EV-side; an AC-DC converter generating a driving voltage by using AC power between the grid-side of the first relay and the grid-side of the second relay; a first sub fusion detecting unit comprising: a third relay having one end connected to the EV-side of the first relay; a first resistor having one end connected to the third relay; a first pull-up resistor having one end supplied by the driving voltage; and a first photo coupler including a light emitting diode connected between another end of the first resistor and one end of the second relay and a transistor connected between another end of the first pull-up resistor and a ground, wherein the transistor is turned on when the light emitting diode is emitting light, and wherein the first sub fusion detecting unit outputs a logic high signal or a logic low signal corresponding to the driving voltage according to whether a current flows through the light emitting diode; and wherein the cable installment type charging control device further comprises a control unit configured to: turn off the third relay in a state where the first and second relays are turned off; and determine that the first relay is not fused on when the logic low signal is input and that the first relay is fused on when the logic high signal is input. ### Claim 2 (depends on 1) The cable installment type charging control device according to claim 1, further comprising a second sub fusion detecting unit for detecting whether the second relay is fused through an EV-side terminal of the second relay and a grid-side terminal of the first relay. ### Claim 3 (depends on 2) The cable installment type charging control device according to claim 2, wherein the second sub fusion detecting unit comprises: a fourth relay having one end connected to the grid-side of the first relay; a second resistor having one end connected to another end of the fourth relay; a second pull-up resistor having one end supplied by the driving voltage; and a second photo coupler including a light emitting diode connected between another end of the second resistor and the EV-side terminal of the second relay and a transistor connected between another end of the second pull-up resistor and a ground, wherein the transistor is turned on when the light emitting diode is emitting light, wherein the second sub fusion detecting unit outputs a logic high signal or a logic low signal corresponding to the driving voltage according to whether a current flows through the light emitting diode. ### Claim 4 (depends on 3) The cable installment type charging control device according to claim 3, wherein the control unit is configured to: turn on the fourth relay in a state where the first and second relays are turned off; and determine that the second relay is not fused on when the logic low signal is input, and that the second relay is fused on when the logic high signal is input. ### Claim 5 (depends on 1) The cable installment type charging control device according to claim 1, further comprising a communication unit for communicating with an add-on communication device attached to the cable installment type charging control device, wherein the control unit notifies whether the first relay is fused to a terminal device through the communication unit via the add-n communication device. ### Claim 6 (depends on 1) The cable installment type charging control device according to claim 1, wherein the control unit stops a charging function before the fusion of the first relay is resolved. ### Claim 7 A method of operating a cable installment type charging control device for charging an electric vehicle (EV) by using power of a grid-side, the method comprising: delivering power of the grid-side to an EV-side through first and second relays; and detecting whether the first relay is fused through an EV-side terminal of the first relay and a grid-side terminal of the second relay and through a third relay, a first resistor, and a first photo coupler which are connected to each other in series, generating a driving voltage via an AC-DC converter by using AC power between the grid-side of the first relay and the grid-side of the second relay, wherein the detecting whether the first relay is fused on is performed via: a first sub fusion detecting unit comprising: the third relay having one end connected to the EV-side of the first relay; the first resistor having one end connected to the third relay; a first pull-up resistor having one end supplied by the driving voltage; and the first photo coupler including a light emitting diode connected between another end of the first resistor and one end of the second relay and a transistor connected between another end of the first pull-up resistor and a ground, wherein the transistor is turned on when the light emitting diode is emitting light, and wherein the first sub fusion detecting unit outputs a logic high signal or a logic low signal corresponding to the driving voltage according to whether a current flows through the light emitting diode, and wherein the method further comprises: turning off the third relay in a state where the first and second relays are turned off; and determining that the first relay is not fused on when the logic low signal is input and that the first relay is fused on when the logic high signal is input.