EP3610533A1 - Procédé de régulation thermique d'un système de batterie pour une recharge rapide d'un véhicule automobile électrique - Google Patents
Procédé de régulation thermique d'un système de batterie pour une recharge rapide d'un véhicule automobile électriqueInfo
- Publication number
- EP3610533A1 EP3610533A1 EP18712984.6A EP18712984A EP3610533A1 EP 3610533 A1 EP3610533 A1 EP 3610533A1 EP 18712984 A EP18712984 A EP 18712984A EP 3610533 A1 EP3610533 A1 EP 3610533A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- availability
- charging
- battery system
- duration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—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
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the field of the invention relates to a thermal control method of a motor vehicle battery system.
- FIG. 1 diagrammatically represents a path of a motor vehicle during which a method known from the state of the art for the thermal regulation of the battery system is executed.
- a first graph represents on the y-axis the evolution of the temperature of the battery system over time.
- a second graph represents on the y-axis the distance of the path made between a position P0, Px where the charging station is located, and Py the destination.
- the electrical power required for driving Pro is represented by pigmented zones between times t0 and t1, and between t3 and t4.
- the operated recharge power Pre is represented by the pigmented zones between times t1 and t2. It can be seen when charging starts that the temperature rises rapidly, which causes interruptions in the charging operation. This temperature protection measure increases the charging time and considerably increases the travel time. In addition, it is estimated that an ultra-fast recharge causes thermal losses so high that the shock resulting heat can not be amortized by the temperature control device during the recharge operation.
- Document WO2014008122 describes a charging solution proposing an active thermal regulation of the battery system during recharging.
- the method provides, once the vehicle is connected to a charging station, a first phase of determining a target temperature to reach before triggering the recharge operation.
- the recharging operation is lengthened because it is triggered only after the temperature regulation has reached the target temperature.
- the invention relates to a method of thermal regulation of a battery system for a motor vehicle, comprising determining a target temperature of the battery system to be reached at the instant of tripping of a recharge. the battery system via a selected charging station.
- the method further comprises determining a state of availability of the charging station and an expected instant of start of availability of the charging station for the vehicle, and in case of a state of unavailability preventing the immediate triggering of the recharge, the triggering of an active thermal regulation controlled at the target temperature before the scheduled time of commencement of availability.
- the availability state is determined as a function of at least one planned path to reach the selected charging station and the expected time of commencement of availability is an estimate of the time of arrival of the vehicle to the charging station selected.
- the expected instant of start of availability is a planned instant of delivery by the selected terminal of a charging current having a value of a maximum current accepted by a charging interface of the vehicle if the instant expected delivery is after the estimated time of arrival of the vehicle at the selected charging station.
- the regulation process can take place according to two active thermal regulation modes.
- the method further comprises determining a first and second duration, the first duration being an estimate of the time remaining before reaching the expected time of commencement of availability of the refill and the second duration being an estimate. the duration of a first mode of operation of the thermal regulation to reach the target temperature and, if the first duration is greater than the second duration, the triggering of the first operating mode is controlled when the first duration becomes equal to the second duration.
- the second duration is calculated as a function of a maximum cooling / heating potential available by a thermal regulation device of the vehicle.
- the method comprises a second mode of operation of the thermal regulation in which a temperature profile is configured to reach the target temperature gradually between a moment of selection of the charging station and the expected instant the beginning of the availability of the recharging and the thermal regulation of the second mode of operation is controlled by the temperature profile.
- the method further comprises determining an estimate of a temperature variation of the battery system between the instant of selection of the charging station and the expected instant of availability start without action of the active thermal temperature regulation, and only in case of a temperature estimated at the expected time of start of availability which is different from the target temperature the method allows the triggering of the active thermal regulation.
- the target temperature is calculated according to a duration of the expected recharge, a planned charging power and a maximum temperature threshold of charging end.
- the maximum temperature threshold at the end of recharging is equal to a tripping threshold for limiting the charging current of the battery system.
- a motor vehicle having a control device which is configured to perform the method according to any one of the embodiments described above.
- the thermal preconditioning of the battery system prevents the occurrence of current limitations. Indeed, the thermal mass of the battery system dampens the thermal shock resulting from the operation of a high power recharge. As a result, the charging current accepted by the charging interface of the vehicle is constantly at its maximum. The recharge time is reduced. Moreover, thanks to the invention it is not necessary to dimension excessively the thermal control device so that it can maintain a compatible operating temperature of a high power recharge.
- FIG. 1 has been described in the presentation of the state of the art to illustrate a known thermal regulation process
- FIG. 2 represents a block diagram of the functions of an electric vehicle involved in the implementation of the thermal regulation method according to the invention
- FIG. 3 represents a graphic sequence describing the thermal regulation method according to the invention
- FIG. 4 represents a first mode of operation of the thermal regulation method
- FIG. 5 represents a second mode of operation of the thermal regulation method.
- the invention relates to electric charging operations of a battery system and finds a particularly advantageous application for compatible vehicles so-called ultra fast charging stations providing a charging power greater than 50 kW.
- the invention will be described for an electric motor vehicle battery system.
- FIG. 2 schematizes part of the functions of the electric vehicle involved in the implementation of the method.
- the invention also applies to electric hybrid vehicles having a charging interface.
- the vehicle comprises functional devices 21 to 26 which will be described later, including a control device 22 (also called supervisor) responsible for controlling the functional devices of the vehicle.
- an electric motor vehicle comprises an electric traction module 26 comprising a wheel train and an electric machine 27.
- an electric traction module 26 comprising a wheel train and an electric machine 27.
- the electric traction module 26 consumes electrical power supplied by a power battery system 21 when it is driven to provide torque to the wheels and generates electrical power when it is driven to recharge the battery system 21.
- the power battery system 21 mainly supplies the traction module 26.
- the battery system is formed of several electric cells and comprises a control device whose function is to control the cycles of recharge and discharge during driving the vehicle.
- a temperature control device that can act in a passive regulation mode so as to prevent the electric cells from exceeding critical operating limits, for example a minimum temperature threshold of about 15 ° C and a maximum temperature threshold of about 60 ° C.
- the temperature control device is able to impose current limitations to reach 0 amps when the temperature of the battery system reaches 60 ° C.
- the battery system 21 comprises means for measuring its activity parameters and is able to provide information concerning its activity parameters that can be used for its control by the vehicle control device 22, in particular a level of state of charge. , an instantaneous operating temperature, the voltage across the battery, the charging / discharging current, an accepted charging current depending on the state of charge state and the instantaneous temperature, the internal resistance, the parameters of health status, ability.
- the temperature control device of the battery system 21 also operates in an active thermal regulation mode by cooperating with a thermodynamic cycle loop type thermal regulation device 23.
- the thermal regulation device 23 consists of a hydraulic circuit comprising at least one compressor, a condenser, an expander and an evaporator and in which circulates a coolant. The circuit cooperates with the battery system 21 via heat exchangers to cool or heat the battery system.
- the hydraulic circuit of the heat transfer fluid of the thermal control device 23 is arranged to evacuate and to provide heat energy to the thermal mass of the battery system 21 via heat exchangers.
- a bypass circuit of the thermal control device 23 is especially dedicated to the thermal regulation of the system 21 and comprises for this purpose heat exchangers, of the plate or tubular type, in contact with the components forming the thermal mass of the battery system 21.
- the bypass circuit of the thermal regulation device 23 comprises components of control of the circulation of the coolant (for example valves and temperature sensors) controlled by the control device 22.
- the control device 22 controls the control components by a temperature setpoint and an activation signal of the thermal regulation .
- the thermal control device 23 is used to cool the passenger compartment, the cooling / heating potential of the thermal control device 23 is shared between the need of the battery system and the need for the passenger compartment. A distribution of the cooling potential is then provided.
- the thermal regulation device 23 provides status information the control device 22 concerning the cooling / heating potential for controlling the circulation of the coolant.
- the electric vehicle 20 comprises a navigation device 25 adapted to operate road navigation functions by means of a vehicle location device (for example satellite technology), road maps, route planner, a road traffic informant and road services.
- a vehicle location device for example satellite technology
- road maps for example road maps
- route planner for example
- road traffic informant for example
- road services for carrying out the thermal regulation process
- the navigation device 25 provides a travel distance, a remaining travel time to reach a selected charging station and road traffic information. This is in no way an exhaustive list and other navigation data can be used for the execution of the control process. In the following description will be described the use that is made of the navigation data by the thermal control method.
- the navigation device 25 includes a service module for the management of the electric charging at charging stations listed in a remote information system 28. More specifically, the electric charging service module has location maps of electric charging stations and informative databases providing the attributes of each terminal. In particular, the recharging service module is able to indicate the available charging power of a terminal, a state of availability of the recharge and a possible triggering time of the recharge. In addition, the recharging service module provides an advance reservation function of an electric charging station to ensure the availability of the terminal. It will be noted that the recharging service module communicates with the remote information system 28 to obtain in real time the information relating to the charging stations (recharging power, state of availability, possible triggering time of a recharge, charging time). expectation, geographical location, cost of recharge, etc.). For this purpose, the navigation device 25 of the vehicle communicates with the information system 28 via radiofrequency communication means (cellular telephone network for example).
- radiofrequency communication means cellular telephone network for example.
- the navigation device 25 is an onboard module of the vehicle. It is also conceivable that it performs all or part of its functions by means of a portable device of the driver, for example a mobile telephone equipment equipped with a specific application for managing the electric charging of the vehicle. For this purpose, there are short-distance communication means (wired or radiofrequency) between the portable device of the driver and the navigation device 25 of the vehicle.
- the vehicle 20 includes a charging interface 24 which is intended to cooperate with an electric charging terminal 29 connected to the electrical network.
- the charging interface 24 connects to the charging station 29 via electric cables or wireless charging technology.
- the charging interface 24 is compatible with a range of high power electric charging powers, and in particular so-called fast recharges with electrical power greater than 50kW and up to 350kW.
- fast recharges with electrical power greater than 50kW and up to 350kW.
- the average losses of the battery system in heat energy are of the order of fifty kilowatts.
- the resulting rise in temperature of the battery system can quickly trigger current limit measurements if the initial charging temperature is already in the order of forty degrees.
- control device 22 comprises integrated circuit computers for executing piloting and navigation programs necessary for the operation of the vehicle.
- the supervisor is responsible for controlling and coordinating the equipment of the powertrain of the vehicle 20, in particular the battery system 21, the thermal regulation device 23, the traction module 26, the charging interface 24 and the navigation device 25. .
- the control device 22 is able to execute the thermal regulation method of the battery system according to the invention. In a centralized functional distribution, all the steps of the control method are performed by the control device 22. In a decentralized distribution mode, some of the steps are distributed in the equipment described above.
- the thermal regulation process is operated when the vehicle is in a taxi situation and is moving towards a charging station until the moment of tripping of the electric charging. It has the advantage of operating a thermal pre-conditioning of the battery system to prevent the occurrence of current limitations during the electric charging.
- the thermal shock is such that it can not be cashed by the action of the regulating device 23. Thanks to the invention, it is damped by the thermal mass of the battery system 21 whose temperature has been previously lowered.
- FIG. 3 represents a graphical sequence of the operation of the thermal regulation method and FIGS. 4 and 5 represent the variation of the temperature of the battery system 21 during the execution of the thermal regulation process.
- step 300 the vehicle is in circulation and is shown at a time ta in Figure 4.
- the driver selects a charging terminal 29 according to the availability status of the charging stations present at proximity of its planned path shown in the lower part of Figure 4.
- the navigation device 25 includes a functionality compiling the information of the planned path and the electric charging services provided by the information system 28.
- the driver will preferably choose a terminal proposing a fast recharge that can deliver a charging current that is equal to the maximum recharge current accepted by the charging interface 24 of the vehicle.
- the driver selects at the instant of ta start of the planned route the charging terminal 29 which is located at a location PI corresponding to a moment te on the planned path.
- the driver has planned to move in accordance with the planned path in the navigation device 25.
- the planned path comprises a first section TA, between its location PO at time ta and the location PI of the charging station which will be reached at estimated instant te, and a second section TRB between the location PI and the location P2.
- the supervisor determines the attributes of the charging terminal 29, in particular the geographical location of the terminal on the planned path TRA, the available charging power and a state indicating whether the terminal is free, occupied or reserved for an estimate of the time of arrival at the terminal te.
- the method determines a state of availability and a planned instant of te start of availability of the charging station.
- the availability state is determined based on at least the scheduled path TRA to reach the selected charging station.
- the expected time of start of availability is calculated based on the estimate of the expected journey time Dpar of the vehicle to reach the selected charging station.
- the expected instant of start of availability te of the charging station is the estimation of the instant of arrival of the vehicle at the charging station 29.
- the navigation device 25 detects a waiting time expected at the arrival of the vehicle to release access to the terminal, the waiting time is added to the arrival time te to calculate the start time availability.
- the terminal is able to deliver a fast charging power that is equal to or greater than 50kW, the expected instant of start of availability is further calculated according to a waiting time of availability of the fast charging power.
- the method then comprises a step of checking the recharge power available by the terminal with regard to a predetermined threshold, for example fixed at 50kW or more.
- the instant of availability start is a planned instant of delivery by the selected terminal 29 of a charging current having a value of the maximum current accepted by the charging interface 24 of the vehicle if the expected instant of delivery is later than the estimation of the time of arrival of the vehicle at the selected charging station 29.
- a waiting time can be provided for stations having several terminals and whose electrical power of a terminal can be lowered temporarily to power all the terminals.
- step 302 the method then checks whether the expected instant of start of availability of the recharge te is equal to the instant ta corresponding to the moment of selection of the charging terminal 29. In case of a positive result, the process would then go to step 313. We will describe this phase in the following description.
- the method has identified a travel time Dpar before the arrival time at the terminal te. This is an opportunity to thermally pre-condition the battery system 21 before triggering the recharge operation at the instant te.
- the method determines a target temperature Tcib of the battery system to be reached for triggering the recharge provided by the selected terminal 29.
- the target temperature is a value or a range of value. For example, it can be estimated that the initial target charging temperature for accepting a fast charge is between a minimum operating limit of the battery system STmin (for example 15 ° C) and about 25 ° C.
- the target temperature may be chosen as the maximum limit of the value range to avoid excessive power consumption of the thermal controller.
- the target temperature Tcib is a predetermined value configured in the supervisor, for example this value is between 15 ° C and 25 ° C.
- the predetermined value Tcib is calibrated according to a reference charging mode (having a fixed recharge depth which is for example 60% of the total capacity of the battery system and a predetermined duration) determined in vehicle design which ensures that the Current limitations will not trigger during a fast charge. More precisely, the target temperature Tcib is configured so that the thermal mass of the battery system 21 prevents a rise in temperature beyond the maximum threshold STmax.
- the control device 22 calculates the target temperature Tcib according to the instantaneous state of the battery system 21. This mode is advantageous in particular for refills of little depth of recharge, for example less than 30% of the capacity of the battery system. More precisely, the target temperature Tcib is calculated according to a predicted recharge duration, the available recharge power (50kw or more) and a maximum end-of-charge temperature threshold STmax, fixed in the example of Figure 4 at 55 ° C which corresponds to a maximum temperature threshold triggering current limitations. The current limitations are lower than the instantaneous charging current and are configured to reduce the charging current to reduce the temperature rise of the battery to zero charge current.
- the duration of the planned recharge is calculated by taking as input parameter the planned path T A.
- This discharge estimation mode calculates an estimate of the state of charge of the battery system 21 on arrival at terminal 29 at the instant te and then determines a predicted recharge depth.
- the control device then calculates an estimate of the recharge time from the predicted charging depth, the maximum charging current accepted by the battery system 21 and the charging power available at the terminal 29.
- the charging duration corresponds to an uninterrupted charging operation controlled by the maximum accepted charging current.
- the control device 22 calculates a temperature rise estimate Vmt.
- the control device 22 determines the value of the target temperature Tcib. Note that in the case of fast charging, the charging current reaches a value preventing a drop or maintenance of the temperature of the battery system even under the action of the control device 23. [040] It is added that the estimation of the state of charge level of the battery system 21 is calculated as a function of the state of charge at the instant ta, the planned path TRA and an estimate of the necessary electrical power Pro to traverse the section TRA.
- the control device 22 has power consumption models as a function of a planned path for estimating the state of charge variation for the planned path.
- the method comprises determining an estimate of a temperature variation Prf of the battery system 21 between the instant of selection of the charging terminal ta and the expected instant of beginning of availability without action of the active thermal temperature regulation, and only in case of a final estimated temperature Tfin at the expected instant of availability start t which is different from the target temperature Tcib, the method further authorizes the triggering the active thermal regulation.
- the estimate of the temperature variation Prf on the section TRA brings the battery system to a final temperature Tfin compatible with the target temperature Tcib or the target temperature range, then the active thermal regulation will not be necessary . This avoids unnecessary power consumption.
- the temperature variation estimate Prf provides a final estimated value Tfin without any action of the active temperature control.
- the temperature variation Prf is calculated as a function of the climatic conditions of rolling and the necessary electrical power Pro to traverse the section TRA.
- step 304 a series of checks on the temperature of the battery system 21 are executed.
- a step 305 the method verifies whether the final estimated value of temperature Tfin is equal to the target temperature Tcib. In case of result positive, the process returns to the initial step 301. Otherwise, the method then checks at a step 306 if the instantaneous temperature Tbat of the battery system 21 is equal to the target temperature Tcib. In the case of a positive result, the process returns to the initial step 301. Otherwise, the process proceeds to the next step 307.
- step 307 the method determines a duration Dreg of the thermal regulation operation to reach the target temperature Tcib as a function of the instantaneous temperature of the battery system 21 corresponding to the estimate of the temperature variation Prf on the section TRA.
- the duration Dreg is estimated by means of temperature control models recorded in the control device 22 of the vehicle and an operating mode of the thermal regulation.
- the temperature regulation time Dreg is calculated as a function of a heat energy potential (cooling or heating potential) by the temperature control device 23.
- the thermal regulation operation mode is a control mode for which the cooling or heating potential is at the maximum level allowed by the regulating device 23 for the battery system 21.
- the heat energy potential for the battery system 21 depends on the distribution between
- a distribution strategy of the control device 22 may provide a predetermined distribution weighting between the thermal need of the passenger compartment and the thermal need of the battery system if necessary. total that is greater than the maximum capacity of the regulating device 23.
- the method checks whether the duration Dreg is equal to or greater than the remaining time of the course Dpar. In case of a positive result, the thermal regulation operation is triggered from the instant ta and the process proceeds to step 309. This scenario is not the situation represented in FIG. 4.
- the triggering of the active thermal regulation is triggered according to one of the two thermal regulation modes presented below and by the double-ended temperature lines. Ml and M2 in Figure 4.
- the selection between the first and the second mode is a function of a configuration parameter of the control device 22.
- step 310 in a first thermal regulation mode Ml, the triggering of the thermal regulation operation is postponed to a future instant tbl for which the regulation time Dreg becomes equal to the remaining duration of the trip Dpar .
- Tbl corresponds to a moment of the planned path TRA between the instant ta and the instant te.
- This first regulation mode saves the battery system electrical energy because the temperature of the battery system will reach the target temperature Tcib precisely at the instant of the beginning of availability of the recharge, either at the arrival of the vehicle at the charging station, or at a later time if a waiting time is expected.
- this first thermal regulation mode Ml uses the maximum cooling / heating potential available by the regulating device 23 for the battery system.
- step 311 in a second thermal regulation mode M2, the triggering of the thermal regulation operation is triggered from the instant ta (moment of selection of the charging station).
- a temperature profile is configured so as to reach the target temperature Tcib gradually from the moment of selection of the charging terminal ta and the expected instant te of the beginning of availability of charging, and the thermal regulation is controlled according to the temperature profile M2.
- the temperature variation has a lower slope because the cold applied instantaneously is lower than that of the first mode Ml.
- This mode is interesting especially to preserve a constant cabin comfort.
- the control device 22 at the instant activates the triggering of the thermal regulation and transmits the progressive temperature profile as a temperature regulation setpoint.
- step 312 This phase corresponds to the instant of arrival at the charging station 29.
- the battery system 21 is pre-conditioned under compatible temperature conditions of the ultra-fast charging operation for a Pre charging power which is greater than 50kW.
- the vehicle is plugged into the selected charging station 29 and the electric charging is triggered with a charging power Pre greater than 50kW.
- the planned recharging operation is performed without the appearance of limitation of the charging current because the rise in temperature is fully damped by the thermal mass of the battery system. 21.
- the recharging operation is performed without the effect of thermal regulation if the thermal mass is able to completely dampen the rise in temperature, or under the action of a thermal regulation.
- the recharge power Pre is kept constant throughout its operation.
- the thermal preconditioning being performed during the journey of the vehicle to the terminal 29 and during the waiting time at the terminal if necessary, the time of the charging operation is reduced.
- the temperature of the battery system reaches the maximum temperature threshold STmax.
- the driver wishes to continue the journey immediately, he will have to wait for a drop in temperature until a moment after which the path will be resumed to make the path T B.
- This drop in temperature is operated passively or it is possible that the device control 22 operates an active thermal regulation at the end of the charging operation.
- the target temperature Tcib is calculated so that the end of charging temperature reaches a value allowing an optimal driving electric power Pro at the end of charging td.
- This situation is illustrated in FIG. 5.
- the references of FIG. 5 are kept identical to FIG. 4 and the thermal regulation mode that is executed is the first regulation mode M1 that has been described in FIG.
- the process executes similarly to the situation of FIG. 4 except that the active thermal regulation controlled by the temperature setpoint Tcib is triggered at time tb2.
- the target temperature Tcib is configured at the value of the minimum temperature threshold STmin, for example at 15 ° C.
- the minimum temperature threshold corresponds to a temperature limit below which the operation of the battery system is not optimal (degradation of performance, accelerated aging for example).
- This threshold may correspond to a threshold for which the thermal regulation device supplies heat to the battery system when its temperature reaches this threshold.
- the electric traction module is able to operate optimally without the risk of occurrence of limitation of current produced due to a high end-of-charge temperature. .
- the driver can start the second section from the moment td. The recharge operation is reduced.
- step 313 The flow of the method is now described in step 313.
- step 302 the method has detected that the moment of start of availability of the refill is equal to the instant ta. In this situation, which is different from the scenarios illustrated in FIGS. 4 and 5, the vehicle is already connected to the charging station 29 and the charging power can be triggered from the moment on.
- the method calculates a target temperature Tcib.
- step 314 if the method detects that the instantaneous temperature Tbat is different from the target temperature Tcib, or a compatible temperature range of the electric charging, the control device 22 triggers a thermal regulation operation at the same time.
- step 315 The target temperature setpoint calculated in step 313 is transmitted to the thermal control device 23.
- the electric recharge is triggered with a charging power Pre greater than 50kW.
- a charging power Pre greater than 50kW Pre greater than 50kW.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Automation & Control Theory (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1753141A FR3065118B1 (fr) | 2017-04-11 | 2017-04-11 | Procede de regulation thermique d'un systeme de batterie pour une recharge rapide d'un vehicule automobile electrique |
PCT/FR2018/050553 WO2018189438A1 (fr) | 2017-04-11 | 2018-03-09 | Procédé de régulation thermique d'un système de batterie pour une recharge rapide d'un véhicule automobile électrique |
Publications (1)
Publication Number | Publication Date |
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EP3610533A1 true EP3610533A1 (fr) | 2020-02-19 |
Family
ID=59031183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18712984.6A Withdrawn EP3610533A1 (fr) | 2017-04-11 | 2018-03-09 | Procédé de régulation thermique d'un système de batterie pour une recharge rapide d'un véhicule automobile électrique |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3610533A1 (fr) |
CN (1) | CN110506359B (fr) |
FR (1) | FR3065118B1 (fr) |
MA (1) | MA50282A (fr) |
WO (1) | WO2018189438A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109412234B (zh) * | 2018-11-13 | 2022-07-12 | Oppo(重庆)智能科技有限公司 | 充电电路、充电处理方法、电子设备及存储介质 |
FR3096315A1 (fr) * | 2019-05-24 | 2020-11-27 | Psa Automobiles Sa | Procédé et dispositif de gestion de la charge d’un véhicule électrique |
US11966840B2 (en) * | 2019-08-15 | 2024-04-23 | Noodle Analytics, Inc. | Deep probabilistic decision machines |
US11285836B2 (en) * | 2019-08-22 | 2022-03-29 | Hyundai Motor Company | Method and apparatus for controlling scheduled charging |
CN112789758A (zh) * | 2020-01-13 | 2021-05-11 | 深圳市大疆创新科技有限公司 | 电池控制方法、可移动平台、系统及计算机可读存储介质 |
US20220176100A1 (en) * | 2020-12-08 | 2022-06-09 | Medtronic, Inc. | Automated and semi-automated designs for battery conditioning in a fully implanted lvad |
FR3119573A1 (fr) * | 2021-02-05 | 2022-08-12 | Psa Automobiles Sa | Procede d’estimation d’un etat de charge d’une batterie de vehicule electrifie pour un systeme de supervision distante |
FR3119803A1 (fr) * | 2021-02-18 | 2022-08-19 | Valeo Systemes Thermiques | Module de contrôle de recharge d’une batterie électrique de véhicule et procédé de recharge |
CN113442746A (zh) * | 2021-06-28 | 2021-09-28 | 奇瑞新能源汽车股份有限公司 | 动力电池的高压放电方法、装置、车辆及存储介质 |
FR3127916B1 (fr) * | 2021-10-12 | 2024-05-03 | Renault Sas | Procédé et un système de gestion du traitement thermique d’au moins un élément d’une chaîne d’entraînement électrique d’un véhicule à motorisation électrique ou hybride |
CN114801889A (zh) * | 2022-03-21 | 2022-07-29 | 中国第一汽车股份有限公司 | 一种电动汽车智能充电控制方法、系统、终端及存储介质 |
WO2024092779A1 (fr) * | 2022-11-04 | 2024-05-10 | 宁德时代新能源科技股份有限公司 | Procédé de gestion thermique pendant la charge d'un véhicule, dispositif et support |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2974635A1 (fr) * | 2011-04-26 | 2012-11-02 | Peugeot Citroen Automobiles Sa | Procede de determination des conditions de recharge d'une batterie de vehicule electrique ou hybride et systeme de mise en œuvre de ce procede |
FR2983354B1 (fr) * | 2011-11-24 | 2015-12-18 | Renault Sas | Procede de regulation de la temperature d'une batterie de traction d'un vehicule electrique en charge, en particulier lors d'une charge rapide de la batterie |
US20140012447A1 (en) | 2012-07-03 | 2014-01-09 | Magna E-Car Systems Of America, Inc. | Thermal management of vehicle battery pack during charging |
US20140129063A1 (en) * | 2012-11-07 | 2014-05-08 | GM Global Technology Operations LLC | Adapting an energy storage system thermal conditioning setpoint based on historical usage |
FR3013151B1 (fr) * | 2013-11-13 | 2017-12-22 | Renault Sas | Procede de gestion de la puissance disponible d'une batterie |
FR3021613B1 (fr) * | 2014-05-27 | 2017-11-24 | Renault Sas | Procede d'estimation du temps de rehabilitation de la performance d'une batterie de traction d'un vehicule hybride |
US20170008375A1 (en) * | 2015-07-10 | 2017-01-12 | Ford Global Technologies, Llc | Preconditioning an Electric Vehicle |
US10256515B2 (en) * | 2015-07-27 | 2019-04-09 | Samsung Electronics Co., Ltd. | Battery thermal management method and system |
DE102015114002B4 (de) * | 2015-08-24 | 2024-05-02 | Deutsche Post Ag | Zentrale Ladesteuerung für eine Mehrzahl Elektrofahrzeuge |
CN106505688A (zh) * | 2016-12-19 | 2017-03-15 | 北京小米移动软件有限公司 | 充电控制方法及装置 |
-
2017
- 2017-04-11 FR FR1753141A patent/FR3065118B1/fr active Active
-
2018
- 2018-03-09 MA MA050282A patent/MA50282A/fr unknown
- 2018-03-09 EP EP18712984.6A patent/EP3610533A1/fr not_active Withdrawn
- 2018-03-09 CN CN201880024733.5A patent/CN110506359B/zh active Active
- 2018-03-09 WO PCT/FR2018/050553 patent/WO2018189438A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
FR3065118B1 (fr) | 2019-04-19 |
CN110506359B (zh) | 2022-09-20 |
WO2018189438A1 (fr) | 2018-10-18 |
CN110506359A (zh) | 2019-11-26 |
FR3065118A1 (fr) | 2018-10-12 |
MA50282A (fr) | 2020-02-19 |
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