# US 12,594,852 B2 · Bidirectional energy transfer system and method utilizing a cordset > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,594,852 B2 - Document ID: US12594852B2 - Status: Granted - Kind: B2 - Application number: 17/550,216 - Filed: 2021-12-14 - Published: 2023-06-15 - Granted: 2026-04-07 - Earliest claimed: 2021-12-14 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Richard Mo; Timothy Harris; Ryan J. O'Gorman; Stuart C. Salter; Katherine Howard-Cone; Peter Phung - Web page: https://patentgrep.com/patent/US12594852B2 ## CPC - B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements - B60L 53/18: Cables specially adapted for charging electric vehicles - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - B60L 2210/42: Voltage source inverters - H02J 2105/12: supplying households or buildings - H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] - H02J 2207/20: Charging or discharging characterised by the power electronics converter - 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 90/14: Plug-in electric vehicles - 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 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A bidirectional energy transfer system includes a cordset of a bidirectional energy transfer system that transfers power from a device to at least one battery array within a traction battery of an electrified vehicle when the cordset is operating under a first condition, and that transfers power from the at least one battery array to the device when the cordset is operating under a second condition. The cordset can include relays powered by the at least one battery array when the cordset is operating under the second condition. ## Claims ### Claim 1 A bidirectional energy transfer system, comprising: a cordset of a bidirectional energy transfer system that transfers power from a device to at least one battery array within a traction battery of an electrified vehicle when the cordset is operating under a first condition, and that transfers power from the at least one battery array to the device when the cordset is operating under a second condition; a plurality of relays of the cordset, the plurality of relays powered by the at least one battery array when the cordset is operating under the second condition; and a plurality of switches of the cordset, the plurality of switches powered by the at least one battery array when the cordset is operating under the second condition, wherein, under the second condition, power received by the cordset from the electrified vehicle has been converted from DC to AC by an inverter of the electrified vehicle. ### Claim 2 (depends on 1) The bidirectional energy transfer system of claim 1, wherein the cordset is a portable cordset. ### Claim 3 (depends on 1) The bidirectional energy transfer system of claim 1, wherein the cordset includes a connector that operably couples to the device and a charge port connector that operably couples to a charge port of the electrified vehicle. ### Claim 4 (depends on 1) The bidirectional energy transfer system of claim 1, wherein the device comprises an AC infrastructure. ### Claim 5 (depends on 1) The bidirectional energy transfer system of claim 1, wherein the device comprises a residential home. ### Claim 6 A bidirectional energy transfer system, comprising: a cordset that transfers power from a device to at least one battery array within a traction battery of an electrified vehicle when the cordset is operating under a first condition, and that transfers power from the at least one battery array to the device when the cordset is operating under a second condition, wherein, under the second condition, power received by the cordset from the at least one battery array has been converted from DC to AC by an inverter of the electrified vehicle; a plurality of relays of the cordset, the plurality of relays powered by power from the at least one battery array when the cordset is operating under the second condition; and a plurality of switches of the cordset, the plurality of switches powered by power from the at least one battery array when the cordset is operating under the second condition. ### Claim 7 (depends on 6) The bidirectional energy transfer system of claim 6, further comprising the inverter of the electrified vehicle, the inverter converting DC power to AC power that is provided to the cordset when the cordset is operating under the second condition. ### Claim 8 (depends on 6) The bidirectional energy transfer system of claim 6, wherein the switches are solid state switches. ### Claim 9 (depends on 6) The bidirectional energy transfer system of claim 6, wherein the cordset is a portable cordset. ### Claim 10 (depends on 6) The bidirectional energy transfer system of claim 6, wherein the cordset includes a connector that operably couples to the device and a charge port connector that operably couples to a charge port of the electrified vehicle. ### Claim 11 (depends on 6) The bidirectional energy transfer system of claim 6, wherein the device comprises an AC infrastructure. ### Claim 12 (depends on 6) The bidirectional energy transfer system of claim 6, wherein the device comprises a residential home. ### Claim 13 A bidirectional energy transfer method, comprising: operating a cordset under a first operating condition where the cordset receives power from a device and transfers the power to an electrified vehicle to charge at least one battery array within a traction battery of the electrified vehicle; operating the cordset under a second operating condition where the cordset receives power from the at least one battery array and transfers the power to the device, the power received by the cordset is AC power that is converted from DC by an inverter of an electrified vehicle; using power from the at least one battery array to power a plurality of relays of the cordset when the cordset is operating under the second operating condition; and using power from the at least one battery array to power a plurality of switches of the cordset when the cordset is operating under the second operating condition. ### Claim 14 (depends on 13) The bidirectional energy transfer method of claim 13, further comprising injecting noise to detect a state of the device. ### Claim 15 (depends on 13) The bidirectional energy transfer method of claim 13, wherein the device comprises an AC infrastructure. ### Claim 16 (depends on 1) The bidirectional energy transfer system of claim 1, further comprising a switched-mode power supply of the cordset, wherein, when the cordset is operating under the second condition, the switched-mode power supply receives power from the plurality of switches, and sends power to the plurality of relays. ### Claim 17 (depends on 6) The bidirectional energy transfer system of claim 6, further comprising a switched-mode power supply of the cordset, wherein, when the cordset is operating under the second condition, the switched-mode power supply receives power from the plurality of switches, and sends power to the plurality of relays. ### Claim 18 (depends on 13) The bidirectional energy transfer method of claim 13, further comprising, when the cordset is operating under the second operating condition, passing power from the plurality of switches through a switched-mode power supply of the cordset to the plurality of relays. ### Claim 19 (depends on 13) The bidirectional energy transfer method of claim 13, further comprising controlling voltage and current with the cordset when the cordset is operating under the second operating condition.