# US 11,114,883 B2 · Method for controlling a charging device on board an electric or hybrid vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,883 B2 - Document ID: US11114883B2 - Status: Granted - Kind: B2 - Application number: 16/463,071 - Filed: 2017-12-14 - Published: 2019-09-19 - Granted: 2021-09-07 - Earliest claimed: 2016-12-14 - Assignees: RENAULT s.a.s. - Applicants: RENAULT s.a.s. - Inventors: Ruben Vela Garcia - Web page: https://patentgrep.com/patent/US11114883B2 ## CPC - B60L 53/20: characterised by converters located in the vehicle - B60L 53/60: Monitoring or controlling charging stations - H02J 7/02: for charging batteries from AC mains by converters - H02J 7/06: using discharge tubes or semiconductor devices - H02J 7/92: with prioritisation of loads or sources - H02M 1/10: Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from AC or DC - H02M 1/12: Arrangements for reducing harmonics from AC input or output - H02M 1/4208: {Arrangements for improving power factor of AC input} - H02M 1/4216: {operating from a three-phase input voltage (H02M1/4233 takes precedence)} - H02M 7/06: using discharge tubes without control electrode or semiconductor devices without control electrode - H02M 7/487: Neutral point clamped inverters - B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors - B60L 2210/30: AC to DC converters - B60L 2210/40: DC to AC converters - B60Y 2200/91: Electric vehicles - B60Y 2200/92: Hybrid vehicles - B60Y 2300/91: Battery charging - H02J 2207/20: Charging or discharging characterised by the power electronics converter - H02M 1/007: {Plural converter units in cascade (push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826)} - H02M 3/01: {Resonant DC/DC converters} - H02M 3/33573: {Full-bridge at primary side of an isolation transformer} - 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 10/92: Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles - Y02T 90/12: Electric charging stations - 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 - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A method controls a battery-charging device including a rectifier stage of three-phase Vienna rectifier type capable of being connected to a single-phase or three-phase electrical power supply grid and linked by first and second DC power supply buses to a DC-to-DC converter stage including first and second LLC resonant converters that are connected to first and second DC power supply bus capacitors, respectively, which are positioned on each of the buses at the output of the rectifier stage. The power supply for the charging device is single phase and the voltage of the first and second DC power supply bus capacitors is regulated independently by the first and second LLC resonant converters so as to provide a fixed regulated voltage on each of the DC power supply buses. ## Claims ### Claim 1 A method for controlling a battery-charging device for a motor vehicle, the charging device comprising a rectifier stage performing a power factor correction function, including three phase connections able to be connected at the input of a single-phase or three-phase electrical power supply grid each by a serial inductance coil, and a DC-DC converter stage connected between the rectifier stage and a battery, the rectifier stage being a three-phase Vienna rectifier comprising a three-phase diode bridge and three switching arms integrated into the diode bridge, each switching arm comprising a serial assembly of a high switch able to be controlled when the current of the grid is positive and a low switch able to be controlled when the current of the grid is negative, the switching arms being interconnected at a midpoint to which a first and second bus capacitor are connected at the output of the rectifier stag, the DC-DC converter stage comprising first and second LLC resonant converters connected at the input respectively to the first and second power supply bus capacitors by first and second power supply buses and, at the output, to the battery, the method being of the type according to which the current is regulated at the input of the charging device using the three-phase Vienna rectifier, each switching arm being controlled using pulse width modulation control signals, the switching duty factor of which is determined based on the regulation of the input current, the method comprising powering the charging device by a single phase and regulating the voltage of the first and second power supply buses independently using the first and second LLC resonant converters so as to provide a fixed regulated voltage on each of the power supply buses. ### Claim 2 (depends on 1) The method according to claim 1, wherein, in a first single-phase connecting mode corresponding to a first single-phase charging power level from among three charging power levels from low to high, first and second of the three-phase connections of the charging device are respectively connected to a phase and neutral wire of the single-phase electric grid, the second phase connection being connected to the neutral wire by a connection relay. ### Claim 3 (depends on 2) The method according to claim 2, wherein the switches of the switching arm corresponding to the second phase connection of the charging device connected to the neutral wire are kept in the closed state at all times, so as alternatively to use only one of the two LLC resonant converters to charge the battery according to the first charging power level, based on the sign of the input current. ### Claim 4 (depends on 3) The method according to claim 3, wherein each time the sign of the input current alternates, the control of the unused LLC resonant converter is cut. ### Claim 5 (depends on 2) The method according to claim 2, wherein the switches of the switching arms corresponding to the first and second phase connections of the charging device connected to the single-phase electrical grid are systematically switched as a function of the sign of the input current, so as to use the two LLC resonant converters jointly to charge the battery according to the first charging power level. ### Claim 6 (depends on 5) The method according to claim 5, wherein during a positive alternation of the input current, the high switch and the low switch of the switching arms respectively corresponding to the first and second phase connections of the charging device are made to switch together and, during a negative alternation of the input current, the low switch and the high switch of the switching arms respectively corresponding to the first and second phase connections of the charging device are made to switch together. ### Claim 7 (depends on 1) The method according to claim 1, wherein, in a second single-phase connection mode, corresponding to a second single-phase charging power level from among at least three charging power levels from low to high, a first and second of the three phase connections of the charging device are respectively connected to a phase and neutral wire of the single-phase electric grid, the second phase connection being connected to the neutral wire by a first connection relay, and one connects the first and third phase connection together by a second connection relay. ### Claim 8 (depends on 7) The method according to claim 7, wherein the status is systematically kept closed for the switches of the switching arm corresponding to the second phase connection of the charging device connected to the neutral wire, and the switches of the switching arm corresponding to the first and third phase connections of the charging device connected together are systematically switched as a function of the sign of the input current, so as to alternatively use only one of the two LLC resonant converters to charge the battery according to the second charging power level, based on the sign of the input current. ### Claim 9 (depends on 8) The method according to claim 8, wherein during a positive alternation of the input current, the high switches of the switching arm respectively corresponding to the first and third phase connections of the charging device connected together are switched together and, during a negative alternation of the input current, the low switches of the switching arms respectively corresponding to the first and third phase connections of the charging device connected together are switched together. ### Claim 10 (depends on 7) The method according to claim 7, wherein the switches of the switching arm corresponding to the first, second and third phase connections of the charging device connected to the single-phase electric grid are systematically switched based on the sign of the input current, so as to use the two LLC resonant converters jointly to charge the battery according to the second charging power level. ### Claim 11 (depends on 1) The method according to claim 1, wherein, in a third single-phase connection mode, corresponding to a third single-phase charging power level from among at least three charging power levels from low to high, a first of the three phase connections of the charging device is connected to a phase wire of the single-phase electric grid and the second and third phase connections of the charging device are connected to said phase wire of the single-phase electric grid by a respective connection relay, the midpoint of the three-phase Vienna rectifier being connected to the neutral wire of the single-phase electric grid. ### Claim 12 (depends on 11) The method according to claim 11, wherein only one of the two LLC resonant converters is used to charge the battery according to the third charging power level based on the sign of the input current, and the switches of the switching arms corresponding to the first, second, and third phase connections of the charging device connected to one another are systematically switched based on the sign of the input current.