WO2022200144A1 - Electrical power supply system comprising a bidirectional charger and a battery, capable of supplying an external charge while being connected to an electrical power supply network and method for controlling such a system - Google Patents
Electrical power supply system comprising a bidirectional charger and a battery, capable of supplying an external charge while being connected to an electrical power supply network and method for controlling such a system Download PDFInfo
- Publication number
- WO2022200144A1 WO2022200144A1 PCT/EP2022/056810 EP2022056810W WO2022200144A1 WO 2022200144 A1 WO2022200144 A1 WO 2022200144A1 EP 2022056810 W EP2022056810 W EP 2022056810W WO 2022200144 A1 WO2022200144 A1 WO 2022200144A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power supply
- switching device
- fast switching
- supply network
- current
- Prior art date
Links
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 18
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000006870 function Effects 0.000 description 3
- 239000013589 supplement Substances 0.000 description 2
- 230000003042 antagnostic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/006—Supplying electric power to auxiliary equipment of vehicles to power outlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Definitions
- TITLE Power supply system comprising a bidirectional charger and a battery, capable of supplying an external load while being connected to a power supply network and method of controlling such a system
- the technical field of the invention is electrical power systems, and more particularly such systems fitted with batteries.
- a combustion engine vehicle can possibly be used as a generator if it is coupled to a generator.
- Another solution, usable for rechargeable electric or hybrid vehicles, more advantageous in terms of compactness and connection power, consists in using the charger of the traction battery of the vehicle in bidirectional mode.
- the power available for the equipment can be of the same order of magnitude as the power of the battery charger, i.e. generally 3.7 or 7 kW, or even 11 kW.
- the bidirectional charger when the bidirectional charger generates the voltage intended for the external load, voltage control is carried out.
- the instruction is to supply and maintain the voltage of 230V within the expected limits.
- current control is performed when the bidirectional charger is connected to a charging terminal supplying a current greater than that required by the external load. In fact, the instruction is then to regulate the current as required by the load.
- the bidirectional charger when connected to a charging terminal supplying a current lower than that required by the external load, current control is also carried out, but with the charger operating as an inverter. Indeed, the charger supplements the charging station by drawing continuous energy from the battery. The frequency is always dictated by the power supply network through the charging station.
- Another technical problem is to have switching means making it possible to ensure a passage from one charger control mode to another mode which is transparent for the external load.
- thermal vehicles offer low-power electrical outlets with an inverter connected to the low-voltage network.
- Some electric or hybrid vehicles offer powers of the order of 1 to 2 kW, with an inverter connected to the traction battery network.
- the present invention thus consists in allowing a management simultaneous operation of the two functions of supplying the external load connected by the user, in inverter mode, on the one hand, and of charging the battery of the electric vehicle, on the other hand, and of allowing switching between voltage and current control according to the powers involved at the level of the load and the charging station.
- the subject of the invention is a power supply system comprising a bidirectional charger connected to a battery, a fast switching device and a power supply socket configured to make it possible to supply a load, the fast switching device being configured to be able to be connected to a power supply network, the system comprises a first current sensor between the bidirectional charger and the fast switching device, a second current sensor between the power supply socket and the bidirectional charger, a output voltage of the fast switching device and a sensor of the state of charge of the battery, and a control means connected to the sensors, to the bidirectional charger and to the fast switching device, configured to control the bidirectional charger and the fast switching based at least on sensor measurements and battery state of charge .
- the fast switching device can be an electronic switch of the Triac type.
- the fast switching device can be connected to the electrical power supply network via a charging socket, the charging socket being configured to be connected to a charging terminal, and to exchange data with the control means .
- Another object of the invention is a motor vehicle provided with an electrical power supply system as defined above.
- Another subject of the invention is a method for controlling an electrical power supply system as defined above, in which the following steps are carried out:
- the bidirectional charger is controlled so that the electrical signals on either side of the fast switching device are synchronized
- a current setpoint is determined according to the powers consumed or supplied by the battery, the electrical supply network and the load,
- the fast switching device is controlled to pass from an off state to an on state
- the bidirectional charger is controlled to switch from operation as a voltage-controlled inverter to operation as a current-controlled inverter or as a current-controlled rectifier by applying the current setpoint,
- a current setpoint is determined according to the powers consumed or supplied by the battery, the electrical supply network and the load,
- the fast switching device is controlled from an on state to an off state.
- FIG 1 illustrates the main elements of a power supply system according to the invention.
- FIG. 1 illustrates the main steps of a method for controlling the power supply system according to the invention
- the figure [Fig 1] illustrates the structure of the power supply system.
- the power supply system 1 comprises a battery 2, connected to a bidirectional charger 3, the bidirectional charger 3 being connected to the power supply network through a fast switching device 5.
- a charging socket 4 makes it possible to connect the fast switching device 5 to the power supply network via an external charging terminal.
- a power supply socket 6 is also connected to the bidirectional charger 3 so as to be able to supply a load.
- the electrical power supply system 1 also comprises a control means 7 making it possible to execute the steps of a control method according to measurements of sensors 8a, 8b, 8c, 8d.
- the sensors 8a, 8b, 8c, 8d include a first current sensor 8a between the bidirectional charger 3 and the fast switching device 5, a second current sensor 8b between the power supply socket 6 and the bidirectional charger 3, a voltage sensor 8c at the output of the fast switching device 5, between the fast switching device and the power supply network, and a sensor 8d of the state of charge of the battery.
- the control means 7 comprises at least one memory and at least one processor, capable of executing software instructions forming a control method.
- the control means 7 is connected to the sensors 8a, 8b, 8c, to the bidirectional charger 3 and to the fast switching device 5.
- the fast switching device is preferably an electronic switch of the Triac type in order to avoid the rebound phenomena of the relay type mechanical switches.
- control means 7 is also connected to the charging terminal through the charging socket 4 so as to determine the power available and to control the switching of the terminal.
- the control means determines a current setpoint to be produced as a function of the power available from the power supply network, the power available in the battery and the power consumption at the power supply outlet.
- the current setpoint is then limited by the maximum power available for the system supply.
- the charging socket is provided with a data connection making it possible to determine the maximum current authorized by the charging terminal when the power supply system is connected to such a terminal and to control the provision power.
- this value is known implicitly when the power supply system is connected to the power supply network via a standard power supply socket.
- Table 1 illustrates different examples of current setpoints for a power supply system connected to a charging station.
- the current available at the terminal is much higher than the current consumed by the load.
- the battery is capable of accepting high energy.
- the current setpoint corresponds to the difference between the maximum current of the terminal and the current consumed.
- the current available at the terminal is much lower than the current consumed by the load.
- the battery is capable of accepting high energy.
- the current setpoint corresponds to the difference between the maximum current of the terminal and the current consumed. This is a negative setpoint which implies that the battery must be discharged to complete the power supplied by the charging station in order to maintain the power supply to the load.
- the current available at the terminal is much greater than the current consumed by the load.
- the battery here is only capable of accepting limited energy.
- the current setpoint is then less than the difference between the maximum current of the terminal and the current consumed so as not to saturate the battery.
- the power system is not connected to a charging station.
- the current available at the terminal is then zero.
- the battery is capable of accepting high energy.
- the current setpoint corresponds to the difference between the maximum current of the terminal and the current consumed. This is a negative setpoint equal to the consumption of the load which implies that the battery must be discharged to supply all the power consumed by the load.
- the control means then controls the charger mode or the inverter mode of the bidirectional charger, according to voltage or current control as a function of the determined current setpoint.
- the current setpoint corresponds to the difference between the maximum current of the terminal and the current consumed.
- the control method is illustrated by the figure [Fig 2] and comprises the following steps.
- the current flowing between the bidirectional charger and the power supply socket is measured using the second current sensor 8b.
- a load is connected to the power supply socket according to the measurement of the current flowing between the bidirectional charger and the power supply socket.
- the method continues with a third step 13, during which it is determined whether the electrical power supply system 1 is connected to the electrical power supply network.
- this information can be determined thanks to a data connection of a charging socket 4 when the electrical power supply system is connected to the electrical power supply system through such a socket.
- a measurement of the voltage upstream of the fast switching device makes it possible to determine the connection to a power supply network. If the power supply system 1 is not connected to the power supply network, the method continues with a fourth step 14 during which a change in the state of the connection to the power supply network is determined. .
- the bidirectional charger operates in voltage-controlled inverter mode when the power supply system is not connected to a power supply network and is supplying an external load. Indeed, energy is taken from the battery in the form of direct voltage and is supplied to the external load in the form of alternating voltage. However, when connecting to the power supply network, the bidirectional charger must be driven by current because the voltage is fixed by the power supply network through the charging station. In addition, depending on the energy supplied by the charging station, the bidirectional charger operates in inverter mode if it has to supplement insufficient power from the charging station to supply the external load. The bidirectional charger operates in rectifier mode if the power from the terminal is sufficient to supply the external load, the rest of the power supplied by the terminal is used to charge battery 2.
- the electrical signals upstream and downstream of the charging socket must be synchronized and the switching fast enough not to be compatible with the change of control of the bidirectional charger and not to be perceived by the load.
- the voltage variation between the fast switching device and the power supply network is measured using the voltage sensor 8c at the output of the fast switching device and the current variation upstream of the socket power supply 6 thanks to the second current sensor 8b at the input of the power supply socket 6
- the bidirectional charger is then controlled so that the peak values and the frequency of the electrical signals, voltage or current, circulating between the bidirectional charger and the electrical power supply socket 6 and of the energy circulating between the fast switching device and the power supply network correspond so as to present a zero phase shift.
- the fast switching device 5 is controlled so as to pass from an off state to an on state
- the bidirectional charger 3 is controlled so as to switch from operation as a voltage-controlled inverter to operation as a current-controlled inverter or as a current-controlled rectifier according to the difference between the power supplied by the charging terminal and the power requested by the external load.
- the method then resumes at the first step 11.
- the fast switching device 5 allows fast switching adapted to switching when the electrical signals are synchronized and adapted to the change of current/voltage control mode. In the case of a connection to a charging terminal, it also allows faster switching than the switching carried out by the charging terminal. Indeed, this makes it possible to obtain a rapid disconnection in a hundred milliseconds for security reasons (standard IEC 61851-1), but only guarantees a connection in a few seconds. Indeed, no standard applies to this phase of operation, and the use of slower relays makes it possible to reduce the cost of the terminal without fundamentally modifying the charging time which lasts in all cases several tens of minutes.
- the method continues with a seventh step 17.
- a change in the state of connection to the power supply network is determined.
- the disconnection of the power supply system from the power supply network is monitored while an external load is supplied by the power supply system.
- this information can be determined thanks to a data connection of a charging socket 4 when the power supply system is connected to the power supply system through such a socket.
- a measurement of the voltage upstream of the fast switching device makes it possible to determine the connection to a power supply network.
- the method continues with an eighth step 18, during which controls the charger in a voltage-controlled inverter mode and the rapid switching device is controlled from an on state to an off state. The method then resumes at the first step 11.
- the electrical power supply system 1 is integrated into a motor vehicle with electric or hybrid traction, the battery of the power supply system then being constituted by the traction battery of the vehicle and the bidirectional charger being constituted by the on-board charger.
- the power supply system 1 can be integrated into a portable generator.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280024680.3A CN117062730A (en) | 2021-03-25 | 2022-03-16 | Power supply system comprising a bidirectional charger and a battery, capable of powering an external load when connected to a power supply network, and method for controlling such a system |
EP22715080.2A EP4313660A1 (en) | 2021-03-25 | 2022-03-16 | Electrical power supply system comprising a bidirectional charger and a battery, capable of supplying an external charge while being connected to an electrical power supply network and method for controlling such a system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2103051A FR3121080B1 (en) | 2021-03-25 | 2021-03-25 | Power supply system comprising a bidirectional charger and a battery, capable of powering an external load while being connected to a power supply network and method of controlling such a system |
FRFR2103051 | 2021-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022200144A1 true WO2022200144A1 (en) | 2022-09-29 |
Family
ID=76283894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/056810 WO2022200144A1 (en) | 2021-03-25 | 2022-03-16 | Electrical power supply system comprising a bidirectional charger and a battery, capable of supplying an external charge while being connected to an electrical power supply network and method for controlling such a system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4313660A1 (en) |
CN (1) | CN117062730A (en) |
FR (1) | FR3121080B1 (en) |
WO (1) | WO2022200144A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010259274A (en) * | 2009-04-28 | 2010-11-11 | Toyota Motor Corp | Charging pack for electric storage device |
EP2823987A1 (en) * | 2012-03-07 | 2015-01-14 | Toyota Jidosha Kabushiki Kaisha | Electric-powered vehicle and method for controlling same |
WO2021004639A1 (en) * | 2019-07-11 | 2021-01-14 | Volvo Truck Corporation | A control unit for an electric power transmission system |
-
2021
- 2021-03-25 FR FR2103051A patent/FR3121080B1/en active Active
-
2022
- 2022-03-16 CN CN202280024680.3A patent/CN117062730A/en active Pending
- 2022-03-16 EP EP22715080.2A patent/EP4313660A1/en active Pending
- 2022-03-16 WO PCT/EP2022/056810 patent/WO2022200144A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010259274A (en) * | 2009-04-28 | 2010-11-11 | Toyota Motor Corp | Charging pack for electric storage device |
EP2823987A1 (en) * | 2012-03-07 | 2015-01-14 | Toyota Jidosha Kabushiki Kaisha | Electric-powered vehicle and method for controlling same |
WO2021004639A1 (en) * | 2019-07-11 | 2021-01-14 | Volvo Truck Corporation | A control unit for an electric power transmission system |
Also Published As
Publication number | Publication date |
---|---|
EP4313660A1 (en) | 2024-02-07 |
CN117062730A (en) | 2023-11-14 |
FR3121080B1 (en) | 2023-04-14 |
FR3121080A1 (en) | 2022-09-30 |
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