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
  • 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
• • 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
  • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
  • H02J7/00308—Overvoltage protection
• • 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
• • 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
• • 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
  • B60L2240/549—Current
• • 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 CONTROL OF CHARGING IN MODE 4 OF A VEHICLE BATTERY
• the DC/DC converter is responsible during the driving phases of the vehicle for converting part of the electric current stored in the main battery to supply electric current to an on-board network of the vehicle and/or a very useful service battery.
• low voltage0 fitted to the vehicle, generally of the 12 V to 48 V type, to recharge it.
• on-board network means an electrical power supply network to which are coupled electrical (or electronic) equipment (or organs) consuming electrical energy and being “non-priority (s) )” or “safe(s)” (and therefore priority(s)).
• overvoltages can occur in a vehicle, in particular during a charging phase in mode 4. They can originate from the direct current power source and/or at least one electrical component (or equipment) of the vehicle. These overvoltages are likely to reduce the life of certain electrical components (or equipment), and in particular of the electrochemical cells for storing electrical energy of the main battery (for example of the lithium-ion (or Li-ion) type or Ni-Mh or Ni-Cd). In addition, these overvoltages can cause, when their duration is relatively long, damage to these electrical components (or equipment) which can be the cause of a fire in the vehicle and/or electrocution of passenger(s). ).
• the object of the invention is therefore in particular to avoid as much as possible the deterioration of certain electrical components (or equipment) (and in particular of the electrochemical cells of the main battery), and therefore the occurrence of incidents, during and after a phase charging in 4.0 mode
• This control method is characterized in that it comprises a step in which at least one input voltage resulting from the charging current and measured between a first input terminal of the vehicle temporarily coupled to the power source and a second input terminal of the vehicle temporarily coupled to the power source or an input terminal of the battery, and, when this input voltage is higher than the threshold for a chosen duration, transmitting to the power source at least one new current setpoint, less than one previous current setpoint, so that it provides at least one new recharge current lower than a previous recharge current.
• this overvoltage can be reduced to a minimum
• an electric GMP transmission chain an on-board network RB, a service battery BS, a main battery BP, a converter CV, and a DC control device according to the invention.
• the BP main battery is suitable for recharging in mode 4. It is therefore rechargeable at high direct current (typically 125 A or 250 A) which is
• the converter CV is responsible during the driving phases of the vehicle V5 for converting part of the electric current stored in 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 (to recharge it). Furthermore, the converter CV notably comprises two terminals (positive and negative) placed respectively at potentials U4 and U01. 0
• 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 a power source SA and placed respectively at potentials U6 and U02 . 5
• the driving machine MME comprises in particular two terminals (positive and negative) placed respectively at potentials U3 and U01.
• the main battery BP notably comprises two terminals (positive and negative) placed respectively at potentials U1 and U00.
• the main battery BP is associated with a battery box BB which notably comprises an isolation device DI, means for measuring voltage/current (not shown), and a 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 driving machine MME if necessary.
• this isolation device DI can comprise
• the processor PR1 and memory MD of the DC control device which are arranged to perform the operations consisting in comparing to the chosen threshold s1 at least one input voltage vek resulting from the charging current crn and measured between the first input terminal U6 of vehicle V (temporarily coupled to power source SA) and second input terminal U02 of vehicle V (temporarily coupled0 to power source SA) or to terminal U1 or U00 of the battery BP, and, when the (at least one) input voltage vek is greater than the threshold s1 for a chosen duration ds, in triggering the transmission to the power source SA of at least one new current setpoint NCC Lower to the previous current set point cci, so that it provides at least one new recharge current crn lower than the previous recharge current cri.
• the chosen durations dsk can be identical or different.
• the (each) ds (or dsk) duration can be between 30 ms and 80 ms.
• the duration dsl associated with the input voltage ve1 can be equal to 50 ms
• any durations ds2 and ds3 associated respectively with the input voltages ve2 and ve3 can be equal to 60 ms. But other values can be used.
• step 10-40 the first time interval it1 can be between 30 seconds and 2 minutes, to arrive at zero current.
• the first time interval it1 can be equal to 1 minute.
• step 10-40 may comprise a sub-step 30 in which the main battery BP is electrically isolated (the control device DC triggers the electrical isolation) from the electrical equipment, and in particular from the machine MME electric motor. 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.
• 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.
• this battery computer CB (or the dedicated computer of the control device DC) 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 messages0 signaling an interruption of charging for a safety reason.
• the invention also proposes a computer program product (or computer program) comprising a set of instructions which, when it is executed by circuit-type processing means electronics (or hardware), such as the processor PR1 for example, is capable of implementing the control method described above to control the charging in mode 4 of the main battery BP of the vehicle V.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Secondary Cells (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=78086526

Family Applications (1)

Country Status (4)

Family Cites Families (6)

• 2021
  • 2021-09-03 FR FR2109206A patent/FR3126664A1/fr active Pending
• 2022
  • 2022-07-11 CN CN202280059571.5A patent/CN117940305A/zh active Pending
  • 2022-07-11 EP EP22755247.8A patent/EP4396023A1/fr active Pending
  • 2022-07-11 WO PCT/FR2022/051388 patent/WO2023031529A1/fr active Application Filing

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