EP2334504A1 - Kraftfahrzeug mit elektromotor, das einen kühlkreislauf für die mit einem heizkörper des innenraums verbundene elektronische leistungsschaltung umfasst - Google Patents

Kraftfahrzeug mit elektromotor, das einen kühlkreislauf für die mit einem heizkörper des innenraums verbundene elektronische leistungsschaltung umfasst

Info

Publication number
EP2334504A1
EP2334504A1 EP09752435A EP09752435A EP2334504A1 EP 2334504 A1 EP2334504 A1 EP 2334504A1 EP 09752435 A EP09752435 A EP 09752435A EP 09752435 A EP09752435 A EP 09752435A EP 2334504 A1 EP2334504 A1 EP 2334504A1
Authority
EP
European Patent Office
Prior art keywords
cooling circuit
vehicle
fluid
cooling
heating radiator
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Withdrawn
Application number
EP09752435A
Other languages
English (en)
French (fr)
Inventor
Robert Yu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP2334504A1 publication Critical patent/EP2334504A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators
    • B60H1/00499—Heat or cold storage without phase change including solid bodies, e.g. batteries
    • 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
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
    • 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
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • 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
    • B60L2240/10—Vehicle control parameters
    • B60L2240/36—Temperature of vehicle components or parts

Definitions

  • Motor vehicle with an electric motor comprising a cooling circuit of the electronic power circuit connected to a heating radiator of the passenger compartment
  • the present invention relates to a motor vehicle, equipped with an electric motor, and which comprises an electronic power circuit, cooled by a cooling circuit in which circulates a coolant.
  • This cooling circuit comprises a heating radiator of the passenger compartment. This heating radiator of the passenger compartment can transfer the calories carried by the heat transfer fluid of the cooling circuit, to the air of the passenger compartment of the vehicle.
  • the document FR 2 757 456 describes a motor vehicle which comprises an electric motor and an electronic power circuit, cooled by a cooling circuit in which circulates a heat transfer fluid.
  • This cooling circuit includes a heating radiator which can transfer the heat transfer heat of the heat transfer fluid to the air of the passenger compartment of the vehicle.
  • the aforementioned document proposes to use a heating radiator with two layers. In one of these layers circulates the heat transfer fluid of the cooling circuit, while the other sheet is part of a second circuit in which circulates a second heat transfer fluid which can be heated by an electrical resistance connected to the vehicle battery.
  • the start-up heating of the vehicle remains problematic. Indeed, at startup, the cooling circuit fluid is cold and heating must therefore use only the second sheet whose heat transfer fluid is heated by a resistor that draws its electrical energy into the vehicle battery. However, in cold weather, the chemical reaction taking place in the battery is greatly slowed down and the battery can not always start the vehicle and thus provide energy to the aforementioned heating resistor.
  • the lack of heating in the cabin is not just a problem of comfort. It can be dangerous, due to fogging, covering the windows of the passenger compartment, which strongly hinders driving or even completely prevents it.
  • An object of the present invention is therefore to provide an electric motor vehicle that has a cabin that can be easily and quickly heated, even when starting the vehicle.
  • the present invention proposes a motor vehicle comprising an electric motor, a passenger compartment, an electronic power circuit and a cooling circuit of said electronic power circuit, in which a coolant circulates and which comprises:
  • a heating radiator disposed upstream of said heat exchanger, adapted to transfer the calories transported by said heat transfer fluid to the air of said passenger compartment via a fan.
  • said cooling circuit comprises an adiabatic reservoir, able to store at least a fraction of said coolant circulating in said cooling circuit, whereby, by storing at least a fraction of said heated fluid during the operation of said vehicle, it it is possible, by introducing said hot fluid stored in said adiabatic tank, in said heating radiator, to rapidly heat the cabin when starting said vehicle or demist the windows.
  • the circulation of the hot fluid in the cooling circuit consumes little electrical energy and can therefore be implemented from the start of the vehicle.
  • the cooling circuit of an electric motor vehicle is simpler than the cooling circuit of a heat engine vehicle.
  • the The cooling circuit that equips the vehicle according to the invention is therefore simple to fill and purge.
  • the adiabatic tank can be easily installed, especially in the engine compartment of the vehicle.
  • the engine compartment contains only the engine, the electronic power circuit and the transmission members.
  • the battery or batteries which can be bulky, are generally arranged outside the engine compartment.
  • said reservoir is disposed above said cooling circuit so that said stored fluid flows in said cooling circuit, under the effect of gravity. In this way, it is possible to circulate the hot fluid in the cooling circuit without using the battery.
  • the bodies to be cooled are at a lower level than in a vehicle with a combustion engine.
  • said adiabatic reservoir comprises an input connected to the output of said heating radiator and an output connected to said input of said heating radiator.
  • said cooling circuit comprises a secondary pump, able to transfer the entire volume of said coolant into said adiabatic tank.
  • This pump makes it possible to quickly empty the cooling circuit when the vehicle is stopped.
  • the hot fluid does not have time to cool.
  • the entire volume of fluid being stored in the tank thus stores the maximum possible heat.
  • the emptying of the cooling circuit makes it possible not to increase the volume of the heat transfer fluid circulating the cooling circuit, which makes it possible not to weigh down the vehicle.
  • the vehicle comprises valve means, arranged so as to cut or reduce the flow of said fluid to said heat exchanger.
  • the hot fluid does not circulate in the heat exchanger, it discharges its heat only at the heating radiator of the passenger compartment and thus optimizes the heating of the passenger compartment.
  • said cooling circuit also makes it possible to cool said motor.
  • said cooling circuit may comprise secondary valve means, arranged to allow the interruption of the circulation of said fluid in the portion of said circuit for cooling said motor. These secondary valve means allow either to not circulate the hot fluid to the motor, or reduce their flow to the minimum necessary.
  • FIGURE schematically represents an embodiment of the cooling circuit fitted to the vehicle according to the invention.
  • Figure 1 shows an example of a cooling circuit, with its annexes, equipping a vehicle according to the invention.
  • the solid lines represent the ducts in which the coolant circulates.
  • the dashed lines represent the electrical connections.
  • the vehicle according to the invention comprises an electric motor 1 and an electronic power circuit 2.
  • the motor 1 is cooled by a heat exchanger (not shown) which may be a simple coil, surrounding the motor , in which circulates a coolant.
  • the two heat exchangers, located respectively at the level of the motor 1 and the power electronic circuit 2, are connected, in parallel with one another, by conduits in which circulates the same coolant.
  • This hot loop makes it possible to transfer the calories transported by the coolant, reheated in contact with the engine
  • the cooling radiator 3 is thermally connected in series with the engine 1 and the electronic power circuit 2. The hot loop and the cooling radiator 3 form the cooling circuit of the vehicle.
  • a heating radiator 4 is thermally connected, in parallel, with the motor 1 and the power electronics circuit 2.
  • This heating radiator 4 is arranged so as to allow the hot heat transfer fluid, exiting of the hot loop, to yield the calories it carries, to the air of the vehicle cabin, through the fan 15.
  • the cooling radiator 3 is connected to the output of the cooling exchanger of the engine 1 and the inlet of the pump 5 ensuring the circulation of the fluid in the cooling circuit and in the heating radiator 4.
  • Valve means (not shown) allow to bypass the radiator 3. When the cooling radiator 3 is short-circuited, the fluid then circulates between the engine 1, the electronic power circuit
  • the vehicle comprises an adiabatic tank 6 (a double-wall tank, heat-insulated, for example) which is connected to the cooling circuit, downstream of the heating radiator 4 and upstream of the radiator inlet.
  • This adiabatic tank 6 comprises an inlet 61, connected to the cooling circuit, between the heating radiator 4 and the inlet of the cooling radiator 3, and an outlet 62, equipped with first valve means 7.
  • the outlet 62 is connected to the cooling circuit between the outlet of the cooling radiator 3 and the inlet of the heating radiator 4, via the pump 5.
  • the first valve means 7 make it possible to close the outlet 62 of the tank 6.
  • a pump secondary 8 is disposed on the conduit connecting the outlet 62 to the cooling circuit, downstream of the first valve means 7. This secondary pump 8 can fill the adiabatic tank e 6 with the coolant circulating in the cooling circuit and optionally the heating radiator 4.
  • Second valve means 9 are arranged on the cooling circuit, downstream of the heating radiator 4 and downstream of the connection between the circuit The second valve means 9 make it possible to block the circulation of the coolant towards the cooling radiator 3 and to send the heat transfer fluid leaving the heating radiator 4 to the adiabatic tank 6 upstream.
  • the third valve means 10 (or secondary valve means) are disposed on the cooling circuit between the heating radiator 4 and the motor 1. These third valve means 10 allow short-circuiting of the cooling radiator. motor 1 and the electronic power circuit 2, during a cold start or reduce their flow.
  • the vehicle also includes a computer 11 which controls a temperature sensor 12.
  • This temperature sensor 12 measures the temperature of the coolant stored in the adiabatic tank 6.
  • the computer 11 also controls an external temperature sensor 13, which measures the external temperature.
  • the computer 11 also controls the main and secondary pumps 5 and 8 and the heating setpoint and / or demister 14, located in the passenger compartment.
  • the computer 11 also controls the first, second and third valve means 7, 9 and 10, from the information given to it by the temperature sensors 12 and 13 and the defogging / heating setpoint 14.
  • the operation of the invention will now be explained. When the vehicle is moving, the engine 1 operates and is cooled by the cooling circuit.
  • the computer 11 cuts the fan 15, the coolant circulates in the heating radiator 4, but the calories are not transferred to the cabin.
  • the coolant also circulates in the engine 1, the power electronic circuit 2 and the cooling radiator 3, only cooling the motor 1 and the power electronic circuit 2.
  • the external temperature sensor 13 and / or the engine temperature sensor (not shown in FIG. 1) detects (s) that the temperature outside the vehicle is greater than a given setpoint. If the user indicates that he wishes to heat the cabin, via the demister / heater setpoint 14, he manually starts the fan 15.
  • the computer 11 turns on the fan 15 (according to the information given by the sensors 12 and 13) and the heat transfer fluid passes through the heating radiator 4 to heat the passenger compartment.
  • the cooling circuit makes it possible both to heat the passenger compartment and to cool the engine 1 and the electronic power circuit 2.
  • the heat transfer fluid is hot.
  • the computer 11 opens the first, second and third valve means 7, 9 and 10 and actuates the secondary pump 8 to suck all or most of the coolant and inject it into the adiabatic reservoir 6.
  • the heat transfer fluid is thus stored in the adiabatic tank 6 which stores the calories it has stored.
  • the computer 11 more or less closes the second and third valve means 9 and 10 and opens more or less the first valve means 7.
  • the flow rates that flow in the different branches are based on the information transmitted to the computer 11 by the temperature sensors 12 and 13 and by temperature sensors, not shown, which measure the temperature of the motor 1 and the electronic power circuit 2.
  • the first valve means 7 are open, the heat transfer fluid flows from the adiabatic tank 6 in the heating radiator 4, thereby heating the air of the passenger compartment.
  • the computer 11 actuates the main pump 5 and the heat transfer fluid circulates between the adiabatic tank 6 and the heating radiator 4. The air of the passenger compartment is thus heated.
  • the computer 11 opens more or less second and third valve means 9 and 10.
  • the heat transfer fluid then circulates throughout the cooling circuit and allows the the heating of the cabin, by its circulation in the heating radiator 4, and the cooling of the engine 1 and the electronic power circuit 2, because of its circulation in the cooling radiator 3 and in the heating radiator 4 which also serves to evacuate the heat transported by the coolant.
  • the reservoir 6 is not short-circuited and the fluid continues to flow through it.
  • the adiabatic tank 6 then serves as a jar of degassing of the coolant.
  • the heat transfer fluid / air mixture enters the adiabatic tank 6, under the effect of the increase in volume (the reservoir having a diameter greater than that of the duct), the air separates from the fluid and remains in the adiabatic tank 6.
  • the computer 11 opens the first second and third valve means 7, 9 and 10.
  • the computer 11 actuates the main pump 5 which circulates the fluid.
  • the coolant circulates immediately in the engine 1 and the electronic power circuit 2, allowing their cooling.
  • the fluid also circulates in the reservoir 6 which serves, as previously explained, degassing jar.
  • the temperature of the coolant remains relatively low, of the order of 50 ° C. to 60 ° C. Therefore, the adiabatic tank which serves as a degassing jar (expansion vessel) can be at atmospheric pressure.
  • the cooling circuit is therefore simple to implement.
  • the heat transfer fluid may be water added with antifreeze.
  • the motor 1 and the power electronic circuit 2 can also be thermally connected in series.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP09752435A 2008-10-14 2009-09-30 Kraftfahrzeug mit elektromotor, das einen kühlkreislauf für die mit einem heizkörper des innenraums verbundene elektronische leistungsschaltung umfasst Withdrawn EP2334504A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0805687A FR2936980B1 (fr) 2008-10-14 2008-10-14 Vehicule automobile a moteur electrique comportant un circuit de refroidissement du circuit electronique de puissance connecte a un radiateur de chauffage de l'habitacle
PCT/FR2009/051862 WO2010043795A1 (fr) 2008-10-14 2009-09-30 Vehicule automobile a moteur electrique comportant un circuit de refroidissement du circuit electronique de puissance connecte a un radiateur de chauffage de l'habitacle

Publications (1)

Publication Number Publication Date
EP2334504A1 true EP2334504A1 (de) 2011-06-22

Family

ID=40404909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09752435A Withdrawn EP2334504A1 (de) 2008-10-14 2009-09-30 Kraftfahrzeug mit elektromotor, das einen kühlkreislauf für die mit einem heizkörper des innenraums verbundene elektronische leistungsschaltung umfasst

Country Status (7)

Country Link
US (1) US8613305B2 (de)
EP (1) EP2334504A1 (de)
JP (1) JP2012505105A (de)
KR (1) KR20110069874A (de)
CN (1) CN102186686A (de)
FR (1) FR2936980B1 (de)
WO (1) WO2010043795A1 (de)

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Also Published As

Publication number Publication date
WO2010043795A1 (fr) 2010-04-22
KR20110069874A (ko) 2011-06-23
CN102186686A (zh) 2011-09-14
JP2012505105A (ja) 2012-03-01
US8613305B2 (en) 2013-12-24
FR2936980A1 (fr) 2010-04-16
FR2936980B1 (fr) 2012-11-16
US20110247783A1 (en) 2011-10-13

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