EP4051887A1 - Elektrische kühlmittelpumpe mit heizelement - Google Patents
Elektrische kühlmittelpumpe mit heizelementInfo
- Publication number
- EP4051887A1 EP4051887A1 EP20792297.2A EP20792297A EP4051887A1 EP 4051887 A1 EP4051887 A1 EP 4051887A1 EP 20792297 A EP20792297 A EP 20792297A EP 4051887 A1 EP4051887 A1 EP 4051887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric
- coolant
- motor vehicle
- coolant pump
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
-
- 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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
- F01P2005/125—Driving auxiliary pumps electrically
-
- 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
- F01P2050/00—Applications
- F01P2050/24—Hybrid vehicles
-
- 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
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/18—Heater
-
- 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
- F01P2070/00—Details
- F01P2070/04—Details using electrical heating elements
Definitions
- the present invention relates to an electric coolant pump for a cooling circuit with the features of the preamble of claim 1 and a method for operating an electric coolant pump assigned to a drive unit of a motor vehicle with the features of the preamble of claim 11.
- heating elements have so far either been used in the engine block or integrated into existing hose lines.
- the object of the present invention is to specify an electric coolant pump with a heating device for preheating the coolant, which can be operated efficiently in a simple and environmentally friendly manner. This object is achieved by an electric coolant pump with the features of claim 1.
- an electric coolant pump for a cooling circuit of a motor vehicle with a pump chamber, the electric coolant pump having a suction line that leads into a suction side of the pump chamber, a discharge channel that leads from a pressure side of the pump chamber, and an electric motor with a control device, wherein the electric coolant pump has a heating device which comprises an electric heating element, which protrudes into the suction line or the discharge channel and can be flushed by the coolant, wherein the electric heating element has at least two operating states, wherein in a first operating state the electrical heating element from an external power supply and can be operated in a second operating state from an on-board network of the motor vehicle, and the control device of the electric motor is designed such that the electric motor has at least two operating states, with the electric motor in a first operating state tor can be operated from the external power network and in a second operating state from the on-board network.
- the heating element and the electric motor of the pump can thus also without a drive unit of the motor vehicle, for. B. an internal combustion engine or an electric drive motor in electric vehicles, runs, can be operated in an environmentally friendly manner. Since the heating device is part of the pump, the device is particularly compact.
- the external power grid is not part of the vehicle. In the first operating state, the heating element and the electric motor are thus preferably fed via a connection on the motor vehicle for an external power supply.
- the power grid can be, for example, a charging station, but also a household power connection.
- the electrical coolant pump has a first electrical connection for connection to the external power supply system and a second electrical connection for connection to the vehicle electrical system, the first connection being designed to supply energy for the heating element and deliver the electric motor. No additional connection is required for the heating element, which makes the design particularly simple.
- the electric coolant pump preferably comprises a transformer which is set up to operate the electric motor with alternating current from the power grid.
- a motor vehicle is provided with at least one drive unit and an electrical coolant pump described above, the coolant pump being designed to circulate coolant in a cooling circuit of one of the drive units.
- the power grid is preferably an external power grid.
- the electric coolant pump preferably has a housing which forms a component of the drive unit. The arrangement is thus space-saving.
- the at least one drive unit of a motor vehicle preferably comprises an electric drive motor and / or an internal combustion engine.
- the motor vehicle has at least one electrical consumer and an electrical coolant pump described above, the coolant pump being designed to circulate coolant in a cooling circuit of the electrical consumer.
- an electrical consumer can be, for example, an LED module of a motor vehicle headlight, which is preferably operated at a predefined operating temperature.
- an electric motor vehicle has at least one battery pack and a previously described electrical coolant pump, the coolant pump being designed to circulate coolant in a cooling circuit of the battery pack.
- the battery pack preferably supplies energy for a drive electric motor. The efficiency of the battery pack is highly dependent on the temperature.
- the battery pack can be heated or cooled by the electric coolant pump so that a desired operating temperature can be maintained.
- the motor vehicle preferably generally has internal electrical connections which provide an electrical connection to the first and second electrical connections of the electrical coolant pump.
- the motor vehicle has an external electrical connection which can be connected to an external power network for energizing the heating device.
- the external electrical connection is also designed for charging the electric car (battery pack).
- a method for operating an electric coolant pump of a motor vehicle assigned to a cooling circuit having at least one drive unit which is tempered by the cooling circuit, the electric coolant pump having a pump chamber, a suction line that leads into a suction side of the pump chamber and a Discharge channel, which leads from a pressure side of the pump chamber, and has an electric motor with a control device.
- the electric coolant pump also has a heating device which comprises an electric heating element which protrudes into the suction line or the discharge channel and can be flushed with a coolant.
- the heating element has at least two operating states, wherein in a first operating state the electrical heating element can be operated or fed from an external power supply and in a second operating state from an on-board network of the motor vehicle and the electric motor also has at least two operating states, in a first operating state the electric motor can be operated or fed from the external power network and, in a second operating state, from the on-board network of the motor vehicle.
- the process consists of the following steps:
- the coolant can be heated efficiently without the drive unit having to run. Both the pump and the heater are then powered from an external source.
- This is particularly advantageous in the case of electric cars or hybrid drives that already have a connection to an external power grid and which are then preferably accessed.
- the external power grid is not part of the vehicle.
- the heating element and the electric motor are thus fed in the first operating state via a connection on the motor vehicle for an external power supply.
- the power grid can be, for example, a charging station, an inductive charging point, but also a household power connection.
- control device of the electric motor is set up to carry out the method steps described.
- An additional control unit can then be dispensed with.
- the heating device is then completely integrated into the pump in terms of control technology.
- an additional, separate control unit is used.
- the electric motor is preferably operated at a low, constant speed.
- the electric motor is preferably operated with direct current from an on-board network of a vehicle.
- the signal for heating the coolant is generated from a signal for a stationary heating mode, i. H. the heating device is used when the drive unit is switched off by operating the pump and the electrical heating element as part of a stand-alone heater.
- the at least one Drive unit has a drive electric motor and / or an internal combustion engine.
- the motor vehicle is a purely electric car, it is preferred that the external electrical connection is also designed for charging the electric car (battery pack).
- FIG. 2 a circuit diagram of the coolant pump of FIG. 1.
- an electric coolant pump 1 is shown in longitudinal section along a pump shaft 2.
- the coolant pump 1 is provided for circulating coolant in a cooling circuit of a drive unit of a motor vehicle.
- the drive unit can be an internal combustion engine or an electric drive motor.
- the two types of drive can also be used together in a hybrid vehicle.
- the cooling circuit can then be assigned to one of the two drives.
- the pump shaft 2 passes through the pump housing 3.
- the pump shaft 2 is driven to rotate about a longitudinal axis 100 by means of an electric motor 4.
- the pump housing 3 is formed by a motor housing 5 surrounding the electric motor 4 or a housing that is independent of the motor housing.
- a pump chamber 6 is formed in the pump housing 3.
- a pump element 7 in the form of a pump wheel 8 is arranged in a rotationally fixed manner, which is located in the pump chamber 6 and is surrounded by the pump housing 3.
- the shape of the pump chamber 6 is adapted to the pump element 7.
- a pressure line 11 in the form of a discharge channel leads radially to the central axis 100 of the pump element 7 from a pressure side 12 of the pump chamber 6.
- a heating device 13 is arranged in the suction line 9.
- the heating device 13 has an electrical heating element 14 and an electrical connection 15, the electrical heating element 14 being connected to the electrical connection 15.
- the electrical connection 15 is provided for connecting the electrical heating element 14 to an external power network with alternating current, in particular with a voltage of 230 volts.
- the electrical heating device 13 is attached to the suction line 9 in such a way that the electrical heating element 14 is washed around by the coolant in the suction line 9.
- the electrical heating element 14 heats the coolant in the suction line 9.
- the coolant pump 1 is driven by the electric motor 4.
- the pump element 7 rotates and conveys the heated coolant, in particular cooling water, from the suction line 9 into the pump chamber 6 and from the pump chamber 6 to the pressure line 11, where it is fed into the coolant circuit of the drive unit.
- the advantage of this arrangement is the accelerated heating of the coolant when the coolant pump 1 is driven.
- the already existing installation space of the coolant pump 1 is optimally used by the structurally simple electrical heating device 13.
- the power supply can be ensured in an environmentally friendly way even when the engine is switched off or when it is cold.
- the heating device is in the discharge channel
- the heated coolant is not sucked in directly by the pump 1, but is fed directly into the coolant circuit of the drive unit.
- the electric motor is a brushless direct current motor comprising a rotor 21 which is connected to a motor shaft 16 and is rotatably mounted in the motor housing 5.
- the rotor 21 is provided with permanent magnets.
- a stator 17 is arranged around the rotor 21 and carries a number of windings on an iron core (not shown). With suitable control, the windings generate a magnetic field that the rotor 21 to Rotation drives.
- the windings are usually wound in three phases and are accordingly provided with three electrical connections via which the windings are connected to a control unit (ECU) 18.
- the control unit 18 is supplied with power from the on-board network 19 when the ferry is in operation.
- the electric coolant pump 1 is also fed by the external power supply system 15 when the drive unit is at a standstill.
- the heating device 13 and a transformer 20 are connected to the power grid 15.
- the transformer 20 transforms the input voltage into an output voltage adapted to the pump motor 4, in particular 12 volts, 24 volts or 48 volts.
- the electric motor 4 of the coolant pump 1 can optionally be supplied with current from the vehicle electrical system 19 or from the external electrical system 15. Switching between the two energy sources takes place by means of the control unit 18.
- the heating device 13 and the coolant pump 1 are energized by the external power supply network 15.
- the electric motor 4 is operated at a low constant speed so that good heat dissipation and distribution of the heated cooling water can take place.
- the ferry is in operation and the drive unit is running, the electric motor 4 is supplied with power from the on-board network 19.
- the area of application makes sense in all water-cooled motor vehicles and utility vehicles and especially in hybrid vehicles which already have an electrical connection that can be used to power the coolant pump and the heating device.
- the electrical heating device 13 and the coolant pump 1 can be supplied with electricity externally, so that efficient preheating of the drive unit is possible. Cold start problems in internal combustion engines such as increased emissions and increased wear can be reduced or avoided by preheating the cooling water in this way. In addition, warm air can be provided for the interior ventilation at the start of the journey, which increases driving comfort. It is also conceivable to use the heated coolant for an auxiliary heating mode in the manner of an auxiliary heating. It can also be provided that the electric coolant pump is used to control the temperature of electrical consumption. Many such small, decentralized, electric coolant pumps can be used in a motor vehicle. For example, the coolant in thermal contact with an LED module can be a
- the electric coolant pump is provided for cooling / heating a battery pack of an electric vehicle.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Air-Conditioning For Vehicles (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019129068.6A DE102019129068A1 (de) | 2019-10-28 | 2019-10-28 | Elektrische Kühlmittelpumpe mit Heizelement |
PCT/EP2020/076574 WO2021083585A1 (de) | 2019-10-28 | 2020-09-23 | Elektrische kühlmittelpumpe mit heizelement |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4051887A1 true EP4051887A1 (de) | 2022-09-07 |
Family
ID=72885492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20792297.2A Withdrawn EP4051887A1 (de) | 2019-10-28 | 2020-09-23 | Elektrische kühlmittelpumpe mit heizelement |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220356835A1 (de) |
EP (1) | EP4051887A1 (de) |
CN (1) | CN114787489A (de) |
DE (1) | DE102019129068A1 (de) |
WO (1) | WO2021083585A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8052850V0 (it) * | 1980-01-21 | 1980-01-21 | Arnaldo Baldessari | Dispositivo per il pre riscaldamento del liquido del circuito di raffreddamento del motore di un autoveicolo |
DE3447182A1 (de) * | 1984-12-22 | 1986-06-26 | Kromberg & Schubert, 5600 Wuppertal | Heizung fuer den fahrgastraum in kraftfahrzeugen |
DE19823603A1 (de) * | 1998-05-27 | 1999-12-02 | Behr Thermot Tronik Gmbh & Co | Vorrichtung zum Steuern der Kühlmitteltemperatur eines Verbrennungsmotors eines Fahrzeuges |
DE10230941B4 (de) * | 2002-07-09 | 2011-07-28 | Robert Seuffer GmbH & Co. KG, 75365 | Verfahren und Vorrichtung zur Regelung der Betriebstemperatur einer Brennkraftmaschine |
CN2564772Y (zh) * | 2002-07-29 | 2003-08-06 | 于杲昱 | 发动机预热器 |
DE10325981A1 (de) * | 2003-06-07 | 2004-12-23 | Daimlerchrysler Ag | Flüssigkeitspumpe mit Heizelement |
DE102010052703A1 (de) * | 2010-11-26 | 2012-05-31 | Daimler Ag | Vorrichtung zum Einstellen einer Temperatur einer Brennstoffzelle, Kraftwagen mit einer Vorrichtung sowie Verfahren zum Einstellen einer Temperatur |
DE102011050199A1 (de) * | 2011-05-06 | 2012-11-08 | Dbk David + Baader Gmbh | Kühlmittelkreislauf |
JP6206275B2 (ja) * | 2014-03-19 | 2017-10-04 | トヨタ自動車株式会社 | 車両 |
US9291256B2 (en) * | 2014-03-24 | 2016-03-22 | Ford Global Technologies, Llc | Method for preheating a powertrain |
WO2016028546A1 (en) * | 2014-08-19 | 2016-02-25 | Borgwarner Inc. | Thermal management system and method of making and using the same |
DE102017011716A1 (de) * | 2017-12-18 | 2019-06-19 | Daimler Ag | Verfahren zum Betrieb eines Fahrzeugs |
-
2019
- 2019-10-28 DE DE102019129068.6A patent/DE102019129068A1/de not_active Withdrawn
-
2020
- 2020-09-23 CN CN202080085038.7A patent/CN114787489A/zh active Pending
- 2020-09-23 WO PCT/EP2020/076574 patent/WO2021083585A1/de active Search and Examination
- 2020-09-23 EP EP20792297.2A patent/EP4051887A1/de not_active Withdrawn
- 2020-09-23 US US17/772,494 patent/US20220356835A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE102019129068A1 (de) | 2021-04-29 |
WO2021083585A1 (de) | 2021-05-06 |
US20220356835A1 (en) | 2022-11-10 |
CN114787489A (zh) | 2022-07-22 |
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