WO2023105125A1 - Surveillance de la recharge en courant continu d'une batterie de véhicule pour la détection d'une ouverture de circuit - Google Patents
Surveillance de la recharge en courant continu d'une batterie de véhicule pour la détection d'une ouverture de circuit Download PDFInfo
- Publication number
- WO2023105125A1 WO2023105125A1 PCT/FR2022/051995 FR2022051995W WO2023105125A1 WO 2023105125 A1 WO2023105125 A1 WO 2023105125A1 FR 2022051995 W FR2022051995 W FR 2022051995W WO 2023105125 A1 WO2023105125 A1 WO 2023105125A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current
- battery
- power source
- charging
- vehicle
- Prior art date
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000012806 monitoring device Methods 0.000 claims description 27
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000004590 computer program Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 description 16
- 238000001514 detection method Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 206010014405 Electrocution Diseases 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- 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
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
-
- 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
- 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
- B60L53/20—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 converters located in the vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- 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
- B60L2240/547—Voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
Definitions
- TITLE MONITORING OF THE DIRECT CURRENT CHARGING OF A VEHICLE BATTERY FOR THE DETECTION OF AN OPEN CIRCUIT
- the invention relates to vehicles comprising a direct current rechargeable battery, and more specifically the monitoring of the charging of this battery during a direct current charging phase.
- Certain vehicles possibly of the automobile type, comprise a so-called “main” (or traction) battery responsible for supplying electrically, via an isolation device, at least one electric motor machine of their powertrain (or GMP) as well as optionally a converter in particular responsible for electrically supplying an on-board network.
- the vehicle also generally comprises a service battery responsible for supplying electrical energy to the on-board network, in addition to that supplied by the converter, and sometimes instead of the latter, and which can be recharged by the converter powered by main battery.
- on-board network means an electrical power supply network to which electrical (or electronic) equipment (or components) consuming electrical energy are coupled.
- Certain main batteries can be recharged according to at least one direct current charging mode, for example a so-called mode 4 mode, once the charging connector of their vehicle has been connected to a direct current (or DC (“Direct Current”)).
- mode 4 charging the main battery (to be recharged) is supplied with high direct current (typically 40 A or 125 A or 250 A) under a relatively low input voltage (typically 450 V) by the power source (via the charging connector), without current rectification by the vehicle converter but via the battery box isolation device associated with the main battery.
- This isolation device is arranged in such a way as to electrically isolate, if necessary, the main battery from the converter and/or from the charging connector and/or from the electric drive machine. It generally includes electrical circuits and/or electrical wires interconnecting fuses and switches (or contactors), possibly based on MOSFET(s) and each of which can assume an open (or off) state and a closed (or on) state. ).
- the isolation device is part of what is usually called the "high voltage" circuit of the vehicle, which also comprises, at least, a part extending between the charging connector and the battery box, associated with the main battery, and a part extending between the isolation device and the converter.
- the aim of the invention is therefore in particular to monitor the charging phases in mode 4 in order to detect an opening of the high voltage circuit.
- This monitoring method is characterized in that it comprises a step in which information which is representative of a difference between a first measured voltage, representative of a recharge voltage supplied by the source, is compared with a first chosen threshold. power supply, and a second voltage measured at the terminals of the battery, and, when this information is greater than the first threshold for a chosen duration, at least one new current setpoint, lower than a setpoint, is transmitted to the power source previous current, so that it provides at least a new recharge current lower than a previous recharge current.
- the invention it is now possible to reduce, and possibly eliminate, the risk caused by the opening of the high voltage circuit of a vehicle during a direct current charging phase, which makes it possible to significantly improve the safety of users. of the vehicle and its integrity.
- the monitoring method according to the invention may comprise other characteristics which may be taken separately or in combination, and in particular:
- the information can be determined by taking the absolute value of the difference between the first and second voltages measured;
- At least one new current setpoint can be transmitted to the power source when, in addition, the second voltage is greater than a second chosen threshold
- the chosen duration can be between 300 ms and 2 s;
- the first time interval can be between 20 ms and 500 ms, to arrive at zero current;
- the battery in its stage, can be electrically isolated from the electrical equipment;
- the invention also proposes a computer program product comprising a set of instructions which, when it is executed by processing means, is capable of implementing a monitoring method of the type presented above for monitoring direct current recharging of a battery of a vehicle capable of supplying electrical equipment and temporarily coupled to a power source delivering a direct current of recharging and defined by a current setpoint.
- the invention also proposes a monitoring device intended to equip a vehicle comprising a battery capable of supplying electrical equipment and of being temporarily coupled during a direct current recharge to a power source delivering a continuous recharge current and defined by a current setpoint.
- This monitoring device is characterized in that it comprises at least one processor and at least one memory arranged to perform the operations consisting in comparing to a first chosen threshold information which is representative of a difference between a first measured voltage, representative of a recharge voltage supplied by the power source, and a second voltage measured at the terminals of the battery, and, when this information is greater than the first threshold for a chosen duration, in triggering a transmission to the source of supplying at least one new current setpoint, lower than a previous current setpoint, so that it supplies at least one new recharge current lower than a previous recharge current.
- a first chosen threshold information which is representative of a difference between a first measured voltage, representative of a recharge voltage supplied by the power source, and a second voltage measured at the terminals of the battery
- the invention also proposes a vehicle, optionally of the automobile type, and comprising a battery, capable of powering electrical equipment and of being temporarily coupled during direct current charging to a power source delivering a direct current of charging and defined by a current setpoint, and a monitoring device of the type presented above.
- FIG. 1 schematically and functionally illustrates an exemplary embodiment of a vehicle comprising a GMP, with an electric drive machine powered by a rechargeable main battery (in particular according to mode 4), and a monitoring device according to the invention
- FIG. 2 schematically and functionally illustrates an exemplary embodiment of a battery box, coupled to a main battery and comprising an exemplary embodiment of a battery computer comprising a monitoring device according to the invention
- FIG. 3 schematically illustrates an example of an algorithm implementing a monitoring method according to the invention.
- the object of the invention is in particular to propose a monitoring method, and an associated monitoring device DS, intended to allow the monitoring of the direct current charging of a main battery BP of a vehicle V temporarily coupled to a source of direct current supply SA, in order to detect an opening of the high voltage circuit.
- the vehicle V is of the automobile type. This is for example a car, as shown in Figure 1. But the invention is not limited to this type of vehicle. It relates in fact to any type of vehicle comprising a main (or traction) battery rechargeable at least with direct current. Thus, it concerns, for example, land vehicles (utility vehicles, motorhomes, minibuses, coaches, trucks, motorcycles, road construction machinery, construction machinery, agricultural machinery, leisure machinery (snowmobile, kart), and caterpillar(s), for example), boats and aircraft.
- land vehicles utility vehicles, motorhomes, minibuses, coaches, trucks, motorcycles, road construction machinery, construction machinery, agricultural machinery, leisure machinery (snowmobile, kart), and caterpillar(s), for example
- the vehicle V comprises a powertrain (or GMP) of the all-electric type (and therefore whose traction is ensured exclusively by at least one electric motor machine MRS).
- GMP could be of the hybrid type (thermal and electric), provided that the main battery (or traction) is rechargeable at least in direct current.
- a vehicle V comprising in particular an electric GMP transmission chain, an on-board network RB, a service battery BS, a main (or traction) battery BP associated with a battery computer CB, a CV converter, and a monitoring device DS according to the invention.
- the on-board network RB is an electrical power supply network to which electrical (or electronic) equipment (or components) which consume electrical energy are coupled.
- the service battery BS is responsible for supplying electrical energy to the on-board network RB, in addition to that supplied by the converter CV powered by the main battery BP, and sometimes instead of this converter CV.
- this service battery BS can be arranged in the form of a very low voltage type battery (typically 12 V, 24 V or 48 V). It is rechargeable at least by the current converter CV. It is considered in what follows, by way of non-limiting example, that the service battery BS is of the 12 V Lithium-ion type.
- the transmission chain has a GMP which is, here, purely electrical, and therefore which comprises, in particular, an electric driving machine MME, a motor shaft AM, and a transmission shaft AT.
- the term “electric drive machine” means an electric machine arranged so as to supply or recover torque to move the vehicle V.
- the operation of the GMP is supervised by a supervision computer CS.
- the electric driving machine MME (here an electric motor) is coupled to the main battery BP, in order to be supplied with electrical energy, as well as possibly to supply this main battery BP with electrical energy during a regenerative braking phase. It is coupled to the motor shaft AM, to provide it with torque by rotational drive.
- This motor shaft AM is here coupled to a reducer RD which is also coupled to the transmission shaft AT, itself coupled to a first train T1 (here of wheels), preferably via a differential D1.
- This first train T1 is here located in the front part PW of the vehicle V. But in a variant this first train T 1 could be the one which is here referenced T2 and which is located in the rear part PRV of the vehicle V.
- the motive machine MME notably comprises two terminals (positive and negative) placed respectively at potentials U3 and U01.
- the converter CV is responsible during the driving phases of the vehicle V to convert part of the electric current from the main battery BP to supply converted electric current, on the one hand, to the on-board network RB, and, on the other hand , the service battery BS (when it needs to be recharged). As illustrated in FIG. 2, this converter CV notably comprises two terminals (positive and negative) placed respectively at potentials U4 and U01.
- the main battery BP is suitable not only for recharging in mode 4, but also for recharging in mode 2 or 3, under the control of a computer CC associated with the converter CV.
- the main battery BP is rechargeable with high direct current (typically 125 A or 250 A) which comes from an external (direct current) power source SA, temporarily connected via a charging cable CR to the charging connector CN of the vehicle V, without current rectification by the converter CV of the vehicle but via an isolation device DI, described later and forming part of a battery box BB associated with the battery main BP.
- high direct current typically 125 A or 250 A
- SA direct current
- the main battery BP is rechargeable with direct current by the converter CV, after an AC/DC conversion (for example from 220 V AC (alternating current) to 450 V DC ( direct current)), when this CV converter has been temporarily coupled to an external power source, via a CR charging cable previously connected to the CN charging connector of the vehicle V.
- an AC/DC conversion for example from 220 V AC (alternating current) to 450 V DC ( direct current)
- the charging connector CN notably comprises two terminals (positive and negative) which respectively define first and second input terminals of the vehicle V intended to be temporarily coupled to the power source SA and placed respectively at potentials U6 and U02. The difference between these potentials U6 and U02 defines a first voltage v1.
- the main battery BP can comprise electrochemical cells for storing electrical energy, possibly of the lithium-ion (or Li-ion) or Ni-Mh or Ni-Cd type.
- the main battery BP can be of the low voltage type (typically 450 V by way of illustration). But it could be medium voltage or high voltage.
- the main battery BP notably comprises two terminals (positive and negative) placed respectively at potentials U1 and U00. The difference between these potentials U1 and U00 defines a second voltage v2. Furthermore, the main battery BP is associated with the battery box BB which comprises, here, at least the isolation device DI, voltage/current measuring means (not shown), and the battery computer CB.
- the isolation device DI is arranged in such a way as to isolate the main battery BP from the converter CV and/or from the charging connector CN and/or from the electric drive machine MME, when the battery computer CB so requests.
- this isolation device DI can comprise protection fuses F2 and F3 and contactors (or switches) Kj based on MOSFET(s) each able to assume an open state ( or not passing) and a closed (or passing) state.
- the first contactor (or switch) K1 is here connected to the positive terminal (U1) of the main battery BP and connected in series with a precharging resistor R which is connected more or less directly to the positive terminals of the charging connector CN (U6 ), CV converter (U4) and MME prime mover (U3).
- This first contactor (or switch) K1 is always placed in its open state during a charging phase.
- the second contactor (or switch) K2 is here mounted in parallel with the first contactor (or switch) K1 and the precharging resistor R (between U1 and U3). It ensures the coupling/decoupling of the main BP battery (U1) to the CN charging connector (U6), CV converter (U4) and MME driving machine (U3).
- the third contactor (or switch) K3 is here connected to the negative terminal (U00) of the main battery BP and to the negative terminal (U01) of the prime mover MME. It ensures the coupling/decoupling of the main battery BP (U00) to/from the driving machine MME (U01).
- the fourth contactor (or switch) K4 is here connected to the second contactor (or switch) K2 (via a fuse F3 (U3-U5)) and to the positive terminal (U6) of the CN charging connector. It ensures the coupling/decoupling of the main battery BP to/from the charging connector CN.
- the fifth contactor (or switch) K5 is here connected, on the one hand, to the third contactor (or switch) K3 (U01) and to the negative terminal of the converter CV, and, on the other hand, to the negative terminal (U02 ) of the CN charging connector. It ensures the coupling/decoupling of the main battery BP to/from the charging connector CN.
- the voltage/current measuring means can, for example and without limitation, determine the first voltage v1 (difference between the potentials U6 and U02) and the second voltage v2 (difference between the potentials U1 and U00) , as well as possibly a voltage U30 (difference between potentials U3 and U00), a voltage U31 (difference between potentials U3 and U01), a voltage U40 (difference between potentials U4 and U00), a voltage U60 (difference between the potentials U6 and U00), and a voltage U61 (difference between the potentials U6 and U1).
- the battery computer CB centralizes the voltage and current measurements and determines the current parameters of the main battery BP as a function of these measurements, and in particular its internal resistance, its minimum voltage and its state of charge (or SOC (“State Of Charge”)). Furthermore, the battery computer CB exchanges information with the supervision computer CS of the GMP and with the computer CC associated with the converter CV (in particular for recharging in mode 4).
- the converter CV can be part of a charger CH electrically connected to the charging connector CN and comprising the computer CC responsible within its vehicle V for controlling the charging of the battery main BP, whatever the mode.
- the vehicle V also comprises a distribution box BD to which the service battery BS, the converter CV and the on-board network RB are coupled.
- This distribution box BD is responsible for distributing in the on-board network RB the electrical energy produced by the converter CV or stored in the service battery BS, for supplying the electrical components (or equipment) coupled to the on-board network RB , as a function of power supply requests received (notably from the GMP CS supervision computer).
- the invention proposes in particular a monitoring method intended to allow monitoring of the charging in mode 4 of the main battery BP. This (monitoring) method can be implemented at least partially by the monitoring device DS (illustrated in FIGS.
- the monitoring device DS can therefore be produced in the form of a combination of electrical or electronic circuits or components (or “hardware”) and software modules (or “software”).
- the memory MD is active in order to store instructions for the implementation by the processor PR1 of at least part of the monitoring method.
- the processor PR1 can comprise integrated (or printed) circuits, or else several integrated (or printed) circuits connected by wired or wireless connections. By integrated (or printed) circuit is meant any type of device capable of performing at least one electrical or electronic operation.
- the monitoring device DS forms part of the battery computer CB (and therefore of the battery box BB). But this is not mandatory. Indeed, the monitoring device DS could comprise its own dedicated computer, which is then coupled to the battery computer CB.
- the (monitoring) method comprises a step 10-50 which is implemented in the vehicle V during each phase of recharging in mode 4 of the main battery BP , and therefore when the contactors (or switches) K2 to K5 are placed in their closed (on) state.
- the battery computer CB sends to the power source SA (via the connector CN and the charging cable CR) an initial current set point cci so that it supplies the vehicle V (to which it is temporarily coupled) with an initial charging current cri under a nominal voltage (for example 450 V).
- the first voltage v1 is periodically measured (which is representative of the recharge voltage supplied by the power source SA), and the second voltage v2 (at the terminals of the BP battery).
- one determines information it which is representative of the difference between the first v1 and second v2 measured voltages, then compares this information he determined.
- step 30 of step 10-50 when the information il is greater than the first threshold s1 for a chosen duration d1, at least one new current setpoint ccn is transmitted to the power source SA , lower than the current setpoint previous cci, so that it provides at least one new recharge current crn lower than the previous (and therefore initial) recharge current cri. It will be understood that it is the monitoring device DS which triggers the transmission of each new current setpoint intended for the power source SA.
- the determination of the superiority (or inferiority) of the information il with respect to the first threshold s1 can be done in a second sub-step 20 by comparing the information il with the first threshold s1.
- the monitoring device DS authorizes the continuation of the recharge in mode 4 with the previous current setpoint (and therefore initial) bcc, then return to perform sub-step 10.
- the information il is greater than the threshold s1 (il > s1 ) for the duration d1 chosen, it is considered that there is an open circuit in the isolation device DI or another part of the vehicle's high voltage circuit V, which is potentially dangerous. Consequently, in sub-step 30, it is decided to transmit to the power source SA at least one new current setpoint ccn, lower than the previous current setpoint ccn.
- the battery computer CB which is responsible for transmitting each new current setpoint ccn to the power source SA, at the request of the monitoring device DS.
- the value of the first threshold s1 can be chosen during the development phase of the vehicle V. This value depends mainly on the electrical architecture of the vehicle V, and in particular on the number of electrical wires of the high voltage circuit, on the length of the electric wires of the high voltage circuit, of the section of the electric wires of the high voltage circuit, and of the characteristics of the contactors (or switches) K2 to K5.
- the value of the first threshold s1 can be between 10 V and 50 V.
- the value of the first threshold s1 can be equal to 20 V. But other values of first threshold s1 can be used.
- At least one new current setpoint ccn can be transmitted to the power source SA when, in addition, the second voltage v2 is greater than a second chosen threshold s2 .
- This second threshold s2 corresponds to the minimum acceptable voltage at the terminals of the main battery BP below which one must not drop under normal operating conditions, whatever the internal temperature of the main battery BP. It will be understood that when the second voltage v2 is lower than the second threshold s2 the battery computer CB must prohibit recharging in mode 4 because the main battery BP is the subject of a malfunction and therefore must not be recharged.
- the value of the second threshold s2 can be chosen during the development phase of the vehicle V. This value depends mainly on the electrical architecture of the vehicle V, and in particular on the number of electrochemical cells of the main battery BP, on the capacity storage of each electrochemical cell of the main battery BP, and the internal operating temperature of the main battery BP.
- the value of the second threshold s2 can be between 200 V and 230 V.
- the value of the second threshold s2 can be equal to 216 V. But other values of second threshold s2 can be used.
- the duration d1 can be between 300 ms and 2 s.
- the duration d1 can be equal to 1 s. But other values of duration d1 can be used.
- step 30 of step 10-50 it is possible to transmit to the power source SA, in a first time interval it1, new successive ccn current setpoints, increasingly small, down to a zero current setpoint.
- This option is intended to force the power source SA to successively supply new recharge currents crn which decrease progressively from the initial recharge current cri to a zero recharge current. This makes it possible to avoid having to subject certain electrical components (or equipment) of the vehicle V to excessive voltage gradients and current gradients which could damage them.
- the first time interval it1 can be between 20 ms and 500 ms, to arrive at zero current.
- the first time interval it1 can be equal to 50 ms. But other values of first time interval it1 can be used.
- step 10-50 can comprise a sub-step 40 in which one electrically isolates (the monitoring device DS triggers the electrical isolation of the) main battery BP from the electrical equipment (and in particular from at least the electric driving machine MME). It will be understood that this puts an end to the recharging of the main battery BP, but not to the supply by the power source SA of new recharging current crn when the latter is gradually reduced. It will also be understood that the electrical isolation is ensured by the isolation device DI, for example by placing (here) the contactors (or switches) K2 and K3 in their open state. This option can possibly take place in two phases.
- the monitoring device DS can trigger the transmission to the GMP monitoring computer CS of a request for authorization to open the contactors (or switches) K2 and K3. This transmission is ensured here by the battery computer CB. Then, if after a second time interval IT2 the monitoring device DS has not received a response to its authorization request, it can trigger in a second phase, on its own initiative, the opening of the contactors (or switches) K2 and K3 for electrically isolating the main battery BP from the electrical equipment (and in particular from at least the electric drive machine MME).
- the second time interval it2 can be between 500 ms and 3 s.
- the second time interval it2 can be equal to 2 s. But other values of second time interval it2 can be used.
- step 10-50 may comprise a sub-step 50 in which recording (the monitoring device DS triggers the recording) is recorded in at least one memory of the vehicle V at (of at least) one fault code which is representative of an open problem in the high voltage circuit detected during charging in mode 4.
- recording the monitoring device DS triggers the recording
- the recording of each fault code makes it possible in an after-sales service to determine the origin of each open in the high voltage circuit, and possibly to inform the user of the vehicle V of the stopping of the charging in mode 4 due to the detection of an open problem in the high voltage circuit.
- a first fault code can be stored in a memory (possibly dead) of the battery computer CB, and the supervision computer CS observing the storage of this first fault code can possibly in turn store a second fault code in a memory (possibly ROM) that it understands.
- the user can either disconnect the CR charging cable from the CN connector, then accept the situation and start a new driving phase with his vehicle V (if the circuit opening has only occurred in part of the high-voltage circuit involved in recharging in mode 4), or restarting a new recharging phase in mode 4, for example after switching the ignition back on then closing the contact again (and provided that the opening of the high-voltage circuit is no longer detected by the monitoring device DS), or else start a new charging phase in mode 2 or 3 and thus attempt to complete it, for example after switching the ignition on again then closing the ignition again.
- the fault code stored in the memory of the battery computer CB can, for example, be associated with a fleeting state if the detection of the opening of the high circuit voltage does not reoccur, and to a permanent state if this detection reoccurs.
- the battery computer CB (or the dedicated computer of the monitoring device DS) can also comprise a mass memory MM1, in particular for the temporary storage of the values of the first v1 and second v2 voltages and any intermediate data involved in all its calculations and processing.
- this battery calculator CB (or the dedicated calculator of the monitoring device DS) can also comprise an input interface IE for receiving at least the values of the first v1 and second v2 voltages in order to use them in calculations or treatments, possibly after the have been shaped and/or demodulated and/or amplified, in a manner known per se, by means of a digital signal processor PR2.
- this battery computer CB (or the dedicated computer of the monitoring device DS) can also comprise an output interface IS, in particular for delivering electrical isolation commands or messages containing new cnc current setpoints or messages containing fault codes or even messages indicating that charging has been interrupted for safety reasons.
- the invention also proposes a computer program product (or computer program) comprising a set of instructions which, when it is executed by processing means of the electronic circuit (or hardware) type, such as for example the processor PR1 is capable of implementing the monitoring method described above to monitor the charging in mode 4 of the main battery BP of the vehicle V.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280081366.9A CN118355579A (zh) | 2021-12-07 | 2022-10-21 | 监视运输工具的电池的以直流再充电以检测电路断开 |
EP22813650.3A EP4445470A1 (fr) | 2021-12-07 | 2022-10-21 | Surveillance de la recharge en courant continu d'une batterie de véhicule pour la détection d'une ouverture de circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2113070A FR3130037A1 (fr) | 2021-12-07 | 2021-12-07 | Surveillance de la recharge en mode 4 d’une batterie de véhicule pour la détection d’une ouverture de circuit |
FRFR2113070 | 2021-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023105125A1 true WO2023105125A1 (fr) | 2023-06-15 |
Family
ID=81327083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2022/051995 WO2023105125A1 (fr) | 2021-12-07 | 2022-10-21 | Surveillance de la recharge en courant continu d'une batterie de véhicule pour la détection d'une ouverture de circuit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP4445470A1 (fr) |
CN (1) | CN118355579A (fr) |
FR (1) | FR3130037A1 (fr) |
WO (1) | WO2023105125A1 (fr) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2113070A5 (fr) | 1970-10-24 | 1972-06-23 | Licentia Gmbh | |
US20130127415A1 (en) * | 2011-11-18 | 2013-05-23 | Fuji Jukogyo Kabushiki Kaisha | Electric charging system and electric charger |
US20180050604A1 (en) * | 2016-08-17 | 2018-02-22 | GM Global Technology Operations LLC | Dynamic power limit adjustment in a battery charging process |
US20180294660A1 (en) * | 2017-04-06 | 2018-10-11 | Hyundai Motor Company | Apparatus and method for controlling rapid charging of a vehicle |
FR3068789A1 (fr) * | 2017-07-07 | 2019-01-11 | Psa Automobiles Sa | Dispositif de protection contre un court-circuit dans un reseau electrique d’un systeme pendant une recharge rapide d’une batterie |
US10913408B2 (en) | 2018-10-23 | 2021-02-09 | Hyundai Motor Company | System for determining state of power relay assembly |
US20210336472A1 (en) * | 2020-04-28 | 2021-10-28 | Hyundai Motor Company | Charging system and method using motor driving system |
-
2021
- 2021-12-07 FR FR2113070A patent/FR3130037A1/fr active Pending
-
2022
- 2022-10-21 WO PCT/FR2022/051995 patent/WO2023105125A1/fr active Application Filing
- 2022-10-21 CN CN202280081366.9A patent/CN118355579A/zh active Pending
- 2022-10-21 EP EP22813650.3A patent/EP4445470A1/fr active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2113070A5 (fr) | 1970-10-24 | 1972-06-23 | Licentia Gmbh | |
US20130127415A1 (en) * | 2011-11-18 | 2013-05-23 | Fuji Jukogyo Kabushiki Kaisha | Electric charging system and electric charger |
US20180050604A1 (en) * | 2016-08-17 | 2018-02-22 | GM Global Technology Operations LLC | Dynamic power limit adjustment in a battery charging process |
US20180294660A1 (en) * | 2017-04-06 | 2018-10-11 | Hyundai Motor Company | Apparatus and method for controlling rapid charging of a vehicle |
FR3068789A1 (fr) * | 2017-07-07 | 2019-01-11 | Psa Automobiles Sa | Dispositif de protection contre un court-circuit dans un reseau electrique d’un systeme pendant une recharge rapide d’une batterie |
US10913408B2 (en) | 2018-10-23 | 2021-02-09 | Hyundai Motor Company | System for determining state of power relay assembly |
US20210336472A1 (en) * | 2020-04-28 | 2021-10-28 | Hyundai Motor Company | Charging system and method using motor driving system |
Also Published As
Publication number | Publication date |
---|---|
FR3130037A1 (fr) | 2023-06-09 |
EP4445470A1 (fr) | 2024-10-16 |
CN118355579A (zh) | 2024-07-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP4387861A1 (fr) | Contrôle de l'utilisation de commutateurs de couplage d'une source d'énergie électrique d'un véhicule à un réseau d'alimentation électrique | |
EP4445470A1 (fr) | Surveillance de la recharge en courant continu d'une batterie de véhicule pour la détection d'une ouverture de circuit | |
WO2023031529A1 (fr) | Contrôle de la recharge en mode 4 d'une batterie de véhicule | |
WO2023135371A1 (fr) | Surveillance de l'isolement électrique d'une ligne de recharge d'une batterie principale d'un véhicule | |
FR3131639A1 (fr) | Surveillance des sous-tensions d’une batterie principale d’un système | |
FR3131638A1 (fr) | Surveillance d’une batterie principale d’un système pour la détection d’un dysfonctionnement | |
FR3132599A1 (fr) | Surveillance d’un circuit de précharge d’un circuit d’interface d’un système | |
FR3136202A1 (fr) | Surveillance de surtensions aux bornes d’une machine motrice électrique d’un véhicule | |
WO2023247843A1 (fr) | Surveillance d'un calculateur associé à une machine motrice électrique d'un véhicule | |
EP4427061A1 (fr) | Surveillance des tensions des cellules d'une batterie cellulaire d'un véhicule | |
WO2024056951A1 (fr) | Surveillance de pics de courant de décharge d'une batterie rechargeable d'un véhicule | |
WO2024023407A1 (fr) | Surveillance d'un détecteur de courant circulant dans une batterie principale d'un véhicule | |
WO2023152428A1 (fr) | Surveillance de courant de fuite lors d'une recharge en mode 4 d'une batterie d'un véhicule | |
FR3141109A1 (fr) | Surveillance d’états de contacteurs d’un dispositif d’interface entre un connecteur de recharge et une batterie rechargeable en courant continu d’un véhicule | |
FR3132149A1 (fr) | Surveillance de la tension de recharge en mode 2 ou 3 aux bornes d’un convertisseur alimentant une batterie d’un véhicule | |
FR3134048A1 (fr) | Surveillance de la tension en sortie d’un convertisseur d’un véhicule | |
FR3138949A1 (fr) | Surveillance de surtensions de cellules d’une batterie cellulaire d’un système pendant une recharge | |
FR3134631A1 (fr) | Surveillance de la tension mesurée d’une batterie principale d’un véhicule pendant une recharge en mode 2 ou 3 | |
WO2024089322A1 (fr) | Surveillance du courant de recharge fourni par une source d'alimentation externe pour recharger en courant continu une batterie d'un véhicule | |
FR3139914A1 (fr) | Surveillance de surtensions aux bornes d’un compresseur de climatisation d’une installation de chauffage/climatisation d’un système | |
WO2023144461A1 (fr) | Surveillance de surtensions de cellules d'une batterie cellulaire d'un système | |
FR3135578A1 (fr) | Surveillance de la température interne mesurée dans une machine motrice électrique d’un véhicule | |
FR3145809A1 (fr) | Diagnostic d’un problème d’alimentation électrique d’une/par une batterie d’un véhicule | |
FR3142008A1 (fr) | Surveillance du fonctionnement d’un dispositif de commutation associé à une batterie rechargeable et dédiée d’un véhicule | |
FR3135425A1 (fr) | Surveillance du fonctionnement d’une machine motrice électrique d’un véhicule |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22813650 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280081366.9 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022813650 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022813650 Country of ref document: EP Effective date: 20240708 |