DE102015122196A1 - Cooling circuit system for an electrically operated vehicle - Google Patents

Cooling circuit system for an electrically operated vehicle Download PDF

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Publication number
DE102015122196A1
DE102015122196A1 DE102015122196.9A DE102015122196A DE102015122196A1 DE 102015122196 A1 DE102015122196 A1 DE 102015122196A1 DE 102015122196 A DE102015122196 A DE 102015122196A DE 102015122196 A1 DE102015122196 A1 DE 102015122196A1
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Prior art keywords
cooling circuit
battery
charger
circuit system
integrated
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DE102015122196.9A
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German (de)
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Hartmut Chodura
Manuel Groß
Björn Pehnert
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Priority to DE102015122196.9A priority Critical patent/DE102015122196A1/en
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    • 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
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • 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
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/667—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an electronic component, e.g. a CPU, an inverter or a capacitor
    • 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
    • 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
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • 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
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Die Erfindung betrifft ein Kühl- bzw. Heizkreislaufsystem für ein elektrisch betriebenes Fahrzeug, mit mindestens einem in einem ersten Kühlkreislauf (2) integrierten Elektromotor (8, 10), sowie mit einer in einem zweiten Kühlkreislauf (38) integrierten Batterie (50), sowie mit einer Verbindungsleitung (22, 34, 35, 42), die zwischen dem ersten und dem zweiten Kühlkreislauf (2, 38) angeordnet ist und die durch mindestens ein Schaltventil (26, 46) steuerbar ist, sowie mit einem elektrischen Ladegerät (36) für die Batterie (50), das in der Verbindungsleitung (22, 34, 35, 42) eingebunden ist.The invention relates to a cooling or heating circuit system for an electrically operated vehicle, comprising at least one electric motor (8, 10) integrated in a first cooling circuit (2) and a battery (50) integrated in a second cooling circuit (38) with a connecting line (22, 34, 35, 42), which is arranged between the first and the second cooling circuit (2, 38) and which is controllable by at least one switching valve (26, 46), and with an electric charger (36) for the battery (50), which is incorporated in the connecting line (22, 34, 35, 42).

Description

Die Erfindung betrifft ein Kühlkreislaufsystem für ein elektrisch betriebenes Fahrzeug gemäß dem Oberbegriff des Anspruchs 1. The invention relates to a refrigeration cycle system for an electrically operated vehicle according to the preamble of claim 1.

Aus der US 2013/0030622 A1 ist ein System und eine Methode zur Behandlung überschüssiger Abwärme in elektrisch angetriebenen Fahrzeugen beschrieben, wobei ein Kühlkreislauf für den Elektromotor und ein Kühlkreislauf für das Ladegerät, dem sog. OBC (Onboard Charger) der Batterie sowie einem Spannungsumrichter, dem sog. LDC (low voltage DC to DC converter) für die Spannungsanpassung zwischen der Batterie und den elektrischen bzw. elektronischen Verbrauchern vorgesehen ist. Die Abwärme des Ladegeräts sowie des Elektromotors kann dabei zur Heizung des Fahrzeuginnenraumes genutzt werden. Darüber hinaus kann die Abwärme zum Vorheizen des Elektromotors genutzt werden. From the US 2013/0030622 A1 describes a system and method for treating excess waste heat in electrically powered vehicles, wherein a cooling circuit for the electric motor and a cooling circuit for the charger, the so-called OBC (Onboard Charger) of the battery and a voltage converter, the so-called LDC (low voltage DC to DC converter) is provided for the voltage adjustment between the battery and the electrical or electronic consumers. The waste heat of the charger and the electric motor can be used to heat the vehicle interior. In addition, the waste heat can be used to preheat the electric motor.

Aufgabe der Erfindung ist es, das Ladegerät für eine Traktionsbatterie eines Elektrofahrzeugs optimal in das Kühlkreislaufsystem eines elektrisch angetriebenen Fahrzeuges einzubinden. Dabei muss sichergestellt sein, dass die HV(Hochvolt)-Batterie richtig temperiert ist, d.h. im Winter bei niedrigen Temperaturen muss sie beheizt werden und im Sommer, bei hohen Temperaturen, entsprechend gekühlt werden. The object of the invention is to integrate the charger for a traction battery of an electric vehicle optimally in the cooling circuit system of an electrically driven vehicle. It must be ensured that the HV (high-voltage) battery is properly tempered, i. In winter at low temperatures, it must be heated and cooled in summer, at high temperatures.

Die Aufgabe wird dadurch gelöst, dass das Kühlkreislaufsystem zwei separate Kühlkreisläufe aufweist, wobei in einem ersten Kühlkreislauf mindestens ein elektrischer Antriebsmotor integriert ist, während in einem zweiten Kühlkreislauf eine Batterie eingebunden ist, und dass zwischen den beiden Kühlkreisläufen eine durch mindestens ein Schalt- bzw. Wegeventil kontrollierte Verbindungsleitung vorgesehen ist, in der das Ladegerät für die HV-Batterie eingebunden ist. The object is achieved in that the cooling circuit system has two separate cooling circuits, wherein in a first cooling circuit at least one electric drive motor is integrated, while in a second cooling circuit, a battery is integrated, and that between the two cooling circuits by at least one switching or Directional valve controlled connection line is provided, in which the charger for the HV battery is integrated.

Dadurch wird erreicht, dass in den Sommermonaten durch den ersten Kühlkreislauf das Ladegerät optimal gekühlt wird, während in den Wintermonaten – wenn die Batterie kalt ist – die Abwärme des Ladegeräts zur Erwärmung der Batterie genutzt werden kann und somit der Energieverbrauch gesenkt werden kann. This ensures that in the summer months through the first cooling circuit, the charger is optimally cooled, while in the winter months - when the battery is cold - the waste heat of the charger can be used to heat the battery and thus energy consumption can be reduced.

In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen des Kühl- bzw. Heizkreislaufsystems beschrieben. In the dependent claims further advantageous embodiments of the cooling or heating circuit system are described.

Das Ladegerät ist in Abhängigkeit von der Schaltstellung eines jeweils im ersten und im zweiten Kühlkreislauf angeordneten 3-Wegeventils entweder in den ersten Kühlkreislauf („Sommerkreislauf“) oder in den zweiten Kühl- bzw. Heizkreislauf („Winterkreislauf“) eingebunden. Depending on the switching position of a 3-way valve arranged in each case in the first and in the second cooling circuit, the charger is integrated either in the first cooling circuit ("summer cycle") or in the second cooling or heating circuit ("winter cycle").

Im ersten Kühlkreislauf wird weiterhin die Leistungselektronik des Elektromotors gekühlt. Darüber hinaus ist eine Wasserpumpe, ein Ausgleichsbehälter sowie mindestens ein Kühler bzw. ein Wärmetauscher im Kühlkreislauf angeordnet. In the first cooling circuit, the power electronics of the electric motor continue to be cooled. In addition, a water pump, a surge tank and at least one cooler or a heat exchanger in the cooling circuit is arranged.

Im zweiten Kühlkreislauf sind ebenfalls ein Ausgleichsbehälter, eine Wasserpumpe, sowie ein durch ein weiteres 3-Wegeventil zu- bzw. abschaltbarer Kühler eingebunden. In the second cooling circuit are also a reservoir, a water pump, as well as connected by a further 3-way valve on or off cooler.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description.

Die einzige Figur zeigt eine schematische Darstellung eines Kühlkreislaufsystems. The single figure shows a schematic representation of a refrigeration cycle system.

In der Figur ist ein erster Kühlkreislauf 2 für ein elektrisch angetriebenes Fahrzeug dargestellt, der im folgendem als Antriebskühlkreislauf bezeichnet wird. In dem Antriebskühlkreislauf 2 sind folgende Komponenten eingebunden: Eine Pumpe 4, ein DC/DC-Wandler 6, zwei Elektromotoren 8 und 10 sowie jeweils eine entsprechende Leistungselektronik 12 und 14 zur Ansteuerung der Elektromotoren 8 und 10. Des Weiteren ist ein Kühler 16 sowie ein Ausgleichsbehälter 18 vorgesehen. Darüber ist hinter dem Druckausgang der Wasserpumpe 4 eine Abzweigung 20 vorgesehen, in der eine hydraulische Bypassleitung 22 einmündet. In the figure, a first cooling circuit 2 shown for an electrically driven vehicle, which is referred to below as the drive cooling circuit. In the drive cooling circuit 2 The following components are included: A pump 4 , a DC / DC converter 6 , two electric motors 8th and 10 and in each case a corresponding power electronics 12 and 14 for controlling the electric motors 8th and 10 , Furthermore, it is a cooler 16 and a surge tank 18 intended. Above it is behind the pressure outlet of the water pump 4 a turnoff 20 provided in which a hydraulic bypass line 22 opens.

In der Bypassleitung 22 ist ein Heizungs-Wärmetauscher 24 sowie ein 3-Wegeventil 26 angeordnet und die Bypassleitung 22 ist mit einem ersten Anschluss 27 des 3-Wegeventils 26 verbunden. Ein zweiter Anschluss 28 des 3-Wegeventils 26 führt über einen ersten hydraulischen Leitungsabschnitt 30 in die Rücklaufleitung des Antriebskühlkreislaufs 2, während an einem dritten Anschluss 32 des 3-Wegeventils 26 ein zweiter hydraulischer Leitungsabschnitt 34 angeschlossen ist, der einerseits über einen dritten hydraulischen Leitungsabschnitt 35 zu einem Ladegerät 36 für eine HV-Batterie führt und andererseits über einen vierten Leitungsabschnitt 37 mit einem zweiten Kühlkreislauf 38 verbunden ist, der später noch näher beschrieben wird. In the bypass line 22 is a heating heat exchanger 24 as well as a 3-way valve 26 arranged and the bypass line 22 is with a first connection 27 of the 3-way valve 26 connected. A second connection 28 of the 3-way valve 26 leads via a first hydraulic line section 30 in the return line of the drive cooling circuit 2 while at a third port 32 of the 3-way valve 26 a second hydraulic line section 34 is connected, on the one hand via a third hydraulic line section 35 to a charger 36 for a HV battery and on the other hand via a fourth line section 37 with a second cooling circuit 38 is connected, which will be described later in more detail.

Ausgangsseitig vom Ladegerät 36 führt ein fünfter hydraulischer Leitungsabschnitt 40 wiederum in die Rücklaufleitung des Antriebskühlkreislaufs 2, während ein sechster hydraulischer Leitungsabschnitt 42 zu einem ersten Anschluss 44 eines zweiten 3-Wegeventils 46 führt. On the output side of the charger 36 leads a fifth hydraulic line section 40 again in the return line of the drive cooling circuit 2 while a sixth hydraulic line section 42 to a first connection 44 a second 3-way valve 46 leads.

In der Rücklaufleitung des Antriebskühlkreislaufs 2 ist weiterhin ein Kühler 47 sowie ein Ausgleichsbehälter 48 angeordnet. In the return line of the drive cooling circuit 2 is still a cooler 47 and a surge tank 48 arranged.

Im zweiten Kühlkreislauf 38, im Folgenden als Batteriekühlkreislauf bezeichnet, ist die Hochleistungsbatterie bzw. die HV-(Hochvolt)Batterie 50 angeordnet, welche die elektrische Energie für den elektrischen Antrieb (Elektromotoren 8 und 10) liefert. In dem Batteriekühlkreislauf 38 ist eine zweite Pumpe 52, das zweite 3-Wegeventil 46 sowie ein drittes 3-Wegeventil 54 und ein zweiter Ausgleichsbehälter 55 integriert. Das 3-Wegeventil 46 kontrolliert die Zuschaltung eines in den Batteriekühlkreislauf 38 eingebundenen Kühlers 56. In the second cooling circuit 38 , hereinafter referred to as battery cooling circuit, is the high-performance battery or the HV (high-voltage) battery 50 arranged, which the electrical energy for the electric drive (electric motors 8th and 10 ). In the battery cooling circuit 38 is a second pump 52 , the second 3-way valve 46 and a third 3-way valve 54 and a second expansion tank 55 integrated. The 3-way valve 46 controls the connection of one in the battery cooling circuit 38 integrated cooler 56 ,

Im Folgenden wird nunmehr Steuerung der beiden Kühlkreisläufe 2 und 38, insbesondere in Bezug auf die Kühlung des Ladegeräts 36, näher beschrieben. The following will now control the two cooling circuits 2 and 38 especially with regard to the cooling of the charger 36 , described in more detail.

Im Sommerbetrieb wird die durch das Ladegerät 36 erzeugte Abwärme mit Hilfe des Antriebskühlkreislaufs 2 abgeführt. Dazu fließt der durch die Pumpe 4 erzeugte Kühlmittelstrom (siehe Flusslinie 58) über den Heizungswärmetauscher 24, das 3-Wegeventil 26 zum Ladegerät 36, von wo er aus über den hydraulischen Leitungsabschnitt 40 wieder in den Rücklauf des Antriebskreislaufs 2 einmündet, um dann die aufgenommene Wärme an den Kühler 47 abzugeben, bevor der Kühlmittelstrom wieder zur Saugseite der Pumpe 4 gelangt. In summer operation is the by the charger 36 generated waste heat with the help of the drive cooling circuit 2 dissipated. For that flows through the pump 4 generated coolant flow (see flow line 58 ) over the heating heat exchanger 24 , the 3-way valve 26 to the charger 36 from where it goes out over the hydraulic line section 40 back into the return of the drive circuit 2 opens, then the heat absorbed to the radiator 47 before the coolant flow back to the suction side of the pump 4 arrives.

Das 3-Wegeventil 26 ist dabei so geschaltet, dass parallel dazu auch die beiden Elektromotoren 8 und 10, die dazu gehörende Leistungselektronik 12 und 14, sowie der DC/DC-Wandler 6 vom Kühlmittel des Antriebskühlkreislaufs 2 durchströmt werden. The 3-way valve 26 is switched so that in parallel to the two electric motors 8th and 10 , the associated power electronics 12 and 14 , as well as the DC / DC converter 6 from the coolant of the drive cooling circuit 2 be flowed through.

Des Weiteren ist der Antriebskühlkreislauf 2 mit dem Batteriekühlkreislauf 38 über die hydraulischen Leitungsabschnitte 34 und 37 verbunden, so dass das Kühlmittel über die Pumpe 52 zur HV-Batterie 50 geführt wird, wo es dieser entsprechend Wärme entzieht, die dann wiederum (bei entsprechender Schaltstellung des 3-Wegeventils 54) über den Kühler 56 wieder abgeführt wird. Furthermore, the drive cooling circuit 2 with the battery cooling circuit 38 over the hydraulic line sections 34 and 37 connected so that the coolant through the pump 52 to the HV battery 50 is guided, where it extracts this heat accordingly, which in turn (with appropriate switching position of the 3-way valve 54 ) over the radiator 56 is discharged again.

Im Winterbetrieb wird die durch das Ladegerät 36 erzeugte Abwärme zur Aufwärmung der HV-Batterie 50 genutzt. Dazu sind die beiden 3-Wegeventile 46 und 54 so geschaltet, dass der Kühlmittelstrom (siehe Flusslinie 60) über das Ladegerät 36 – dem entsprechend Wärme entzogen wird – zur Pumpe 52 gelangt, die dann über ihre Druckseite das Kühlmittel zur HV-Batterie 50 pumpt, von wo es aus über die Rücklaufleitung des Batteriekühlkreislaufs 38 (ohne Einbindung des Kühlers 56), den hydraulischen Leitungsabschnitt 42, das Ladegerät 36, die hydraulischen Leitungsabschnitte 35 und 37 wieder zur Saugseite der Pumpe 52 geführt wird. In winter operation is the by the charger 36 generated waste heat for heating the HV battery 50 used. These are the two 3-way valves 46 and 54 switched so that the coolant flow (see flow line 60 ) via the charger 36 - The corresponding heat is removed - to the pump 52 then passes the coolant to the HV battery via its pressure side 50 from where it empties via the return line of the battery cooling circuit 38 (without integration of the cooler 56 ), the hydraulic line section 42 , The charger 36 , the hydraulic pipe sections 35 and 37 back to the suction side of the pump 52 to be led.

Das zuvor beschriebene Kühlkreislaufsystem ist nicht auf die Verwendung bei rein elektrisch angetriebenen Fahrzeugen beschränkt, sondern kann ebenfalls bei Hybridfahrzeugen o.ä. eingesetzt werden, die neben dem elektrischen Antrieb noch eine weitere Antriebsquelle aufweisen. The refrigeration cycle system described above is not limited to use in purely electrically driven vehicles, but may also be used in hybrid vehicles or the like. are used, which in addition to the electric drive still have another drive source.

ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • US 2013/0030622 A1 [0002] US 2013/0030622 Al [0002]

Claims (7)

Kühlkreislaufsystem für ein elektrisch betriebenes Fahrzeug, mit mindestens einem in einem ersten Kühlkreislauf (2) integrierten Elektromotor (8, 10), sowie mit einer in einem zweiten Kühlkreislauf (38) integrierten Batterie (50), sowie mit einer Verbindungsleitung (22, 34, 35, 42), die zwischen dem ersten und dem zweiten Kühlkreislauf (2, 38) angeordnet ist und die durch mindestens ein Schaltventil (26, 46) steuerbar ist, sowie mit einem elektrischen Ladegerät (36) für die Batterie (50), das in der Verbindungsleitung (22, 34, 35, 42) eingebunden ist. Cooling circuit system for an electrically operated vehicle, with at least one in a first cooling circuit ( 2 ) integrated electric motor ( 8th . 10 ), and with a in a second cooling circuit ( 38 ) integrated battery ( 50 ), as well as with a connecting line ( 22 . 34 . 35 . 42 ), between the first and the second cooling circuit ( 2 . 38 ) is arranged and by at least one switching valve ( 26 . 46 ) is controllable, as well as with an electric charger ( 36 ) for the battery ( 50 ) located in the connecting line ( 22 . 34 . 35 . 42 ) is involved. Kühlkreislaufsystem nach Anspruch 1, dadurch gekennzeichnet, dass zur Steuerung der Verbindungsleitung (22, 34, 35, 42) zwei Schaltventile (26, 46) vorgesehen sind, die als 3-Wegeventile ausgebildet sind. Cooling circuit system according to claim 1, characterized in that for controlling the connecting line ( 22 . 34 . 35 . 42 ) two switching valves ( 26 . 46 ) are provided, which are designed as 3-way valves. Kühlkreislaufsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in dem ersten Kühlkreislauf (2) eine Pumpe (4), Leistungselektronik (12, 14) zur Steuerung des Elektromotors (8, 10), ein Ausgleichsbehälter (48) sowie ein Kühler (47) eingebunden ist. Cooling circuit system according to claim 1 or 2, characterized in that in the first cooling circuit ( 2 ) a pump ( 4 ), Power electronics ( 12 . 14 ) for controlling the electric motor ( 8th . 10 ), a surge tank ( 48 ) as well as a cooler ( 47 ) is involved. Kühlkreislaufsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in dem zweiten Kühlkreislauf (38) eine Pumpe (52), ein Ausgleichsbehälter (55), sowie ein Kühler (56) eingebunden ist. Cooling circuit system according to claim 1 or 2, characterized in that in the second cooling circuit ( 38 ) a pump ( 52 ), a surge tank ( 55 ), as well as a cooler ( 56 ) is involved. Kühlkreislaufsystem nach Anspruch 4, dadurch gekennzeichnet, dass der Kühler (56) über ein weiteres, im zweiten Kühlkreislauf (38) integriertes 3-Wegeventil (54) zuschaltbar ist. Cooling circuit system according to claim 4, characterized in that the radiator ( 56 ) via another, in the second cooling circuit ( 38 ) integrated 3-way valve ( 54 ) is switchable. Kühlkreislaufsystem nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in einer ersten Betriebsstellung die beiden 3-Wege-Ventile (26, 46) so geschaltet sind, dass das Ladegerät (36) in den ersten Kühlkreislauf (2) eingebunden ist. Cooling circuit system according to one of the preceding claims, characterized in that in a first operating position, the two 3-way valves ( 26 . 46 ) are switched so that the charger ( 36 ) in the first cooling circuit ( 2 ) is involved. Kühlkreislauf nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass in einer zweiten Betriebsstellung die beiden 3-Wege-Ventile (26, 46) so geschaltet sind, dass das Ladegerät (36) in den zweiten Kühlkreislauf (38) eingebunden ist. Cooling circuit according to one of claims 1 to 5, characterized in that in a second operating position, the two 3-way valves ( 26 . 46 ) are switched so that the charger ( 36 ) in the second cooling circuit ( 38 ) is involved.
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CN112339527A (en) * 2020-12-01 2021-02-09 南京协众汽车空调集团有限公司 New energy automobile thermal management system and working method thereof
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