US20220356835A1 - Electric coolant pump with heating element - Google Patents
Electric coolant pump with heating element Download PDFInfo
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- US20220356835A1 US20220356835A1 US17/772,494 US202017772494A US2022356835A1 US 20220356835 A1 US20220356835 A1 US 20220356835A1 US 202017772494 A US202017772494 A US 202017772494A US 2022356835 A1 US2022356835 A1 US 2022356835A1
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- electric
- heating element
- motor
- power supply
- operating state
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- 239000002826 coolant Substances 0.000 title claims abstract description 94
- 238000010438 heat treatment Methods 0.000 title claims abstract description 39
- 238000005485 electric heating Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 12
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
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- 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
- DE 10 2017 011716 A1 describes a method for operating an electric coolant pump and a heating element for preheating a drive train unit in a plug-in hybrid vehicle.
- Example embodiments of the present disclosure provide electric coolant pumps each including a heater to preheat the coolant, which can be operated efficiently in a simple and environmentally friendly manner.
- the heating element and the electric motor of the pump can be operated in an environmentally friendly manner even without a drive assembly of the motor vehicle, e.g., an internal combustion engine or a drive electric motor in the case of electric vehicles. Since the heater is a portion of the pump, the structure is particularly compact.
- the external power grid is not required to be an element of the motor vehicle.
- the power grid can be, for example, a charging station, but also a household power connection. No additional connection is required for the heating element, which makes the design particularly simple.
- the electric coolant pump includes a transformer to drive the electric motor with AC power from the electrical grid.
- a motor vehicle is provided with at least one drive assembly and an electric coolant pump described above, the coolant pump being operable to circulate coolant in a cooling circuit of one of the drive assemblies.
- the power supply is preferably an external power supply.
- the electric coolant pump includes a housing which defines a structural element of the drive assembly. The arrangement thus saves installation space.
- the at least one drive assembly of a motor vehicle includes a drive electric motor and/or an internal combustion engine.
- the motor vehicle may include generally internal electrical connections that provide an electrical connection to the first and second electrical connections of the electric coolant pump.
- the motor vehicle includes an external electrical connection that can be connected to an external power supply to supply power to the heater.
- the external electrical connection is also structured to charge the electric car (battery pack).
- an example embodiment of the present disclosure provides a method to operate an electric coolant pump of a motor vehicle which is assigned to a cooling circuit, the motor vehicle including at least one drive assembly which is temperature-controlled by the cooling circuit, the electric coolant pump including a pump chamber, a suction line which leads into a suction side of the pump chamber, and a discharge channel which leads out of a pressure side of the pump chamber, and an electric motor with a controller.
- the electric coolant pump also includes a heater including an electric heating element that projects into the suction line or the discharge channel and can be flushed around by a coolant.
- the heating element includes at least two operating states, a first heating element operating state in which the electric heating element can be operated or is supplied from an external power supply system and in a second heating element operating state in which the electric heating element can be operated or is supplied from an on-board power supply system of the motor vehicle
- the electric motor likewise includes at least two electric motor operating states, a first electric motor operating state in which the electric motor can be operated or is supplied from the external power supply system and in a second electric motor operating state in which the electric motor can be operated or is supplied from the on-board power supply system of the motor vehicle.
- the electric coolant pump includes a first electrical connection to connect to the external power supply system and a second electrical connection to connect to the on-board power supply system, the first connection being set up to supply power to the heating element and the electric motor.
- a procedure includes receiving a signal that the coolant is to be heated, querying an operating state of the drive assembly and/or querying whether the motor vehicle is connected to an external power supply, and, if the drive assembly is not running and/or the motor vehicle is connected to an external power supply, operating the electric heating element and the electric motor in the first heating element operating state and the first electric motor operating state.
- Both the pump and the heating element are then supplied with power from an external source.
- This is particularly advantageous for electric cars or hybrid drives, which already have a connection to an external power grid and which is then preferably accessed.
- the external power grid is preferably not a portion of the motor vehicle.
- the heating element and the electric motor are thus supplied with power 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 power charging station, an inductive charging station, but also a household power connection.
- controller of the electric motor is set up to carry out the described process steps.
- An additional controller can then be dispensed with.
- the heater is then fully integrated in the pump in terms of control technology.
- the electric motor is preferably operated with direct current from a vehicle's electrical system.
- the signal for heating the coolant is generated from a signal for a stationary heating operation, i.e., the heater is a portion of a stationary heating operation when the drive assembly is switched off by operating the pump and the electric heating element.
- the at least one drive assembly includes a drive electric motor and/or an internal combustion engine.
- the motor vehicle is a purely electric car
- the external electrical connection is also operable to charge the electric car (battery pack).
- FIG. 1 is a schematic representation of an electric coolant pump with an electric heater according to an example embodiment of the present disclosure.
- FIG. 2 is circuit diagram of the coolant pump of FIG. 1 .
- FIGS. 1 and 2 show an electric coolant pump 1 in longitudinal section along a pump shaft 2 .
- the coolant pump 1 is provided for circulating coolant in a cooling circuit of a drive assembly of a motor vehicle.
- the drive assembly can be an internal combustion engine or drive electric motor.
- the two drive types may also be used together in a hybrid vehicle.
- the cooling circuit can then be assigned to one of the two drive assemblies.
- the pump shaft 2 passes through the pump housing 3 .
- the pump shaft 2 is driven by means of an electric motor 4 to rotate about a longitudinal axis 100 .
- the pump housing 3 is formed by a motor housing 5 surrounding the electric motor 4 or by a housing independent of the motor housing.
- the heater 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 supply with alternating current, in particular with 230 volts voltage.
- the electrical heater 13 is attached to the suction line 9 in such a way that the electrical heating element 14 is surrounded by the coolant in the suction line 9 .
- the electric heating element 14 heats up.
- the electric heating element 14 heats up the coolant in the suction line 9 .
- the coolant pump 1 is driven by means of 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 assembly.
- the advantage of this arrangement is the accelerated heating of the coolant when the coolant pump 1 is driven.
- the existing installation space of the coolant pump 1 is optimally utilized by the electrical heater 13 , which has a simple design.
- the heater in the discharge channel 11 of the coolant pump 1 .
- the heated coolant is not drawn in directly by pump 1 , but is fed directly into the coolant circuit of the drive assembly.
- the electric coolant pump 1 is also supplied by the external power supply network 15 when the drive assembly is stationary.
- the heater 13 and a transformer 20 are connected to the power supply network 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 be selectively supplied with power from the on-board power supply 19 or from the external power supply 15 . Switching between the two energy sources is performed by means of the controller 18 .
- the heater 13 and the coolant pump 1 are supplied with current by the external power supply system 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. In driving mode and with the drive assembly running, however, the electric motor 4 is supplied with power from the vehicle electrical system 19 .
- the application range is useful in all water-cooled cars and commercial vehicles and especially in hybrid vehicles, which already have an electrical connection that can be used to power the coolant pump and the heater.
- the electric heater 13 and the coolant pump 1 can be supplied with power externally so that efficient preheating of the drive assembly is possible. Cold-start problems with the internal combustion engine, such as increased emissions and increased wear, can be reduced or avoided by preheating the coolant in this way. In addition, warm air can be provided for interior ventilation at the start of driving, which increases driving comfort. It is also conceivable to use the heated coolant for stationary heating in the form of a parking heater.
- the electric coolant pump for temperature control of an electrical load.
- Many such small, decentralized, electric coolant pumps can be used in a motor vehicle.
- the coolant may be in thermal contact with an LED module of a motor vehicle headlight. In the event that the coolant is too cold, it can be heated by means of the heater.
- the electric coolant pump is provided for cooling/heating a battery pack of an electric vehicle.
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- 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)
- Air-Conditioning For Vehicles (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
An electric coolant pump of a cooling circuit of a motor vehicle includes a pump chamber, a suction line leading into a suction side of the pump chamber, a discharge channel leading out of a pressure side of the pump chamber, and an electric motor with a controller. The electric coolant pump includes a heater including an electric heating element which projects into the suction line or the discharge channel and which can be flushed by the coolant. The electric heating element includes at least a first heating element operating state in which the electric heating element can be operated from a power supply system and a second heating element operating state in which the electric heating element can be operated from an on-board power supply system of the motor vehicle. The controller of the electric motor is configured or programmed such that the electric motor also includes at least two operating states.
Description
- The present disclosure relates to an electric coolant pump for a cooling circuit and to a method of operating an electric coolant pump associated with a drive assembly of a motor vehicle.
- After a cold start, internal combustion engines initially exhibit reduced efficiency and possibly increased pollutant emissions. The reason for this, apart from other aspects, is the high viscosity of the oils in this operating state, which cannot yet sufficiently reduce the friction between the moving oil-lubricated components. For this reason, the basic aim is to heat up the coolant and the engine or transmission oil quickly. At least for extreme climatic operating conditions, it is necessary to heat up the coolant before the engine is started.
- To heat the coolant, heating elements have so far either been inserted into the engine block or integrated into existing hose lines.
- From the disclosure of DE 103 25 981 A1, it is further known to insert an electric heating element into a suction line of a mechanical cooling water pump.
- WO 2004/011796 A1 shows an electric coolant pump for a cooling circuit of a motor vehicle, which functions as an engine preheater. An electric heating element is arranged in a discharge channel and is flushed by the coolant. This arrangement of the heating element makes the engine preheater particularly compact.
- DE 10 2017 011716 A1 describes a method for operating an electric coolant pump and a heating element for preheating a drive train unit in a plug-in hybrid vehicle.
- Example embodiments of the present disclosure provide electric coolant pumps each including a heater to preheat the coolant, which can be operated efficiently in a simple and environmentally friendly manner.
- An example embodiment of the present disclosure provides an electric coolant pump for a cooling circuit of a motor vehicle including a pump chamber. The electric coolant pump includes a suction line which leads into a suction side of the pump chamber, a discharge channel which leads out of a pressure side of the pump chamber, and an electric motor with a controller. The electric coolant pump includes a heater which includes an electric heating element which projects into the suction line or the discharge channel and can be flushed around by the coolant. The electric heating element includes at least two operating states. In a first electric heating element operating state, the electric heating element can be operated from an external power supply system, and in a second electric heating element operating state, the electric heating element can be operated from an on-board power supply system of the motor vehicle. The controller of the electric motor is configured or programmed such that the electric motor includes at least two electric motor operating states. In a first electric motor operating state, the electric motor can be operated from the external power supply system and in a second electric motor operating state, the electric motor can be operated from the on-board power supply system. The electric coolant pump includes a first electrical connection to connect to the external power supply system and a second electrical connection to connect to the on-board power supply system, the first connection being set up to supply power to the heating element and the electric motor.
- The heating element and the electric motor of the pump can be operated in an environmentally friendly manner even without a drive assembly of the motor vehicle, e.g., an internal combustion engine or a drive electric motor in the case of electric vehicles. Since the heater is a portion of the pump, the structure is particularly compact. The external power grid is not required to be an element of the motor vehicle. The power grid can be, for example, a charging station, but also a household power connection. No additional connection is required for the heating element, which makes the design particularly simple.
- Preferably, the electric coolant pump includes a transformer to drive the electric motor with AC power from the electrical grid.
- Furthermore, a motor vehicle is provided with at least one drive assembly and an electric coolant pump described above, the coolant pump being operable to circulate coolant in a cooling circuit of one of the drive assemblies. In this case, the power supply is preferably an external power supply. Preferably, the electric coolant pump includes a housing which defines a structural element of the drive assembly. The arrangement thus saves installation space.
- Preferably, the at least one drive assembly of a motor vehicle includes a drive electric motor and/or an internal combustion engine.
- The motor vehicle may include at least one electrical consumer and an electrical coolant pump described above, the coolant pump being structured to circulate coolant in a cooling circuit of the electrical consumer. Such an electrical consumer may be, for example, an LED module of a motor vehicle headlamp, which is preferably operated at a predefined operating temperature.
- Furthermore, an electric motor vehicle may include at least one battery pack and an electric coolant pump described above, the coolant pump being structured to circulate coolant in a cooling circuit of the battery pack. The battery pack preferably provides power to a drive electric motor. The efficiency of the battery pack is highly temperature dependent. The electric coolant pump can heat or cool the battery pack so that a desired operating temperature can be maintained.
- Preferably, the motor vehicle may include generally internal electrical connections that provide an electrical connection to the first and second electrical connections of the electric coolant pump.
- It is preferred if the motor vehicle includes an external electrical connection that can be connected to an external power supply to supply power to the heater. In the event that the motor vehicle is a purely electric car, it is preferred that the external electrical connection is also structured to charge the electric car (battery pack).
- In addition, an example embodiment of the present disclosure provides a method to operate an electric coolant pump of a motor vehicle which is assigned to a cooling circuit, the motor vehicle including at least one drive assembly which is temperature-controlled by the cooling circuit, the electric coolant pump including a pump chamber, a suction line which leads into a suction side of the pump chamber, and a discharge channel which leads out of a pressure side of the pump chamber, and an electric motor with a controller. The electric coolant pump also includes a heater including an electric heating element that projects into the suction line or the discharge channel and can be flushed around by a coolant. The heating element includes at least two operating states, a first heating element operating state in which the electric heating element can be operated or is supplied from an external power supply system and in a second heating element operating state in which the electric heating element can be operated or is supplied from an on-board power supply system of the motor vehicle, and the electric motor likewise includes at least two electric motor operating states, a first electric motor operating state in which the electric motor can be operated or is supplied from the external power supply system and in a second electric motor operating state in which the electric motor can be operated or is supplied from the on-board power supply system of the motor vehicle. The electric coolant pump includes a first electrical connection to connect to the external power supply system and a second electrical connection to connect to the on-board power supply system, the first connection being set up to supply power to the heating element and the electric motor.
- A procedure according to an example embodiment of the present disclosure includes receiving a signal that the coolant is to be heated, querying an operating state of the drive assembly and/or querying whether the motor vehicle is connected to an external power supply, and, if the drive assembly is not running and/or the motor vehicle is connected to an external power supply, operating the electric heating element and the electric motor in the first heating element operating state and the first electric motor operating state.
- Thus, efficient heating of the coolant can take place without the need to run the drive assembly. Both the pump and the heating element are then supplied with power from an external source. This is particularly advantageous for electric cars or hybrid drives, which already have a connection to an external power grid and which is then preferably accessed. The external power grid is preferably not a portion of the motor vehicle. The heating element and the electric motor are thus supplied with power 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 power charging station, an inductive charging station, but also a household power connection.
- It is advantageous if the controller of the electric motor is set up to carry out the described process steps. An additional controller can then be dispensed with. The heater is then fully integrated in the pump in terms of control technology. However, it is also possible to use an additional separate controller.
- Preferably, the electric motor is operated at a low constant speed.
- In the event that the combustion engine is running, the electric motor is preferably operated with direct current from a vehicle's electrical system.
- In an advantageous example embodiment, the signal for heating the coolant is generated from a signal for a stationary heating operation, i.e., the heater is a portion of a stationary heating operation when the drive assembly is switched off by operating the pump and the electric heating element.
- As previously described, it is preferred if the at least one drive assembly includes a drive electric motor and/or an internal combustion engine. In the event that the motor vehicle is a purely electric car, it is preferred that the external electrical connection is also operable to charge the electric car (battery pack).
- The above and other elements, features, steps, characteristics and advantages of the present disclosure will become more apparent from the following detailed description of the example embodiments with reference to the attached drawings.
- Example embodiments of the present disclosure are described below with reference to the drawings.
-
FIG. 1 is a schematic representation of an electric coolant pump with an electric heater according to an example embodiment of the present disclosure. -
FIG. 2 is circuit diagram of the coolant pump ofFIG. 1 . -
FIGS. 1 and 2 show anelectric coolant pump 1 in longitudinal section along apump shaft 2. Thecoolant pump 1 is provided for circulating coolant in a cooling circuit of a drive assembly of a motor vehicle. The drive assembly can be an internal combustion engine or drive electric motor. The two drive types may also be used together in a hybrid vehicle. The cooling circuit can then be assigned to one of the two drive assemblies. Thepump shaft 2 passes through thepump housing 3. Thepump shaft 2 is driven by means of anelectric motor 4 to rotate about alongitudinal axis 100. Thepump housing 3 is formed by amotor housing 5 surrounding theelectric motor 4 or by a housing independent of the motor housing. - A
pump chamber 6 is formed in thepump housing 3. A pump element 7 in the form of a pump impeller 8 is non-rotatably arranged on thepump shaft 2, lies in thepump chamber 6 and is surrounded by thepump housing 3. Thepump chamber 6 is adapted in shape to the pump element 7. Concentric to the central axis of the pump element 7, asuction line 9 in the form of a feed channel opens into asuction side 10 of the pump chamber. Radial to thecenter axis 100 of the pump element 7, a pressure line 11 in the form of a discharge channel leads out of a pressure side 12 of thepump chamber 6. Aheater 13 is arranged in thesuction line 9. - The
heater 13 has anelectrical heating element 14 and anelectrical connection 15, theelectrical heating element 14 being connected to theelectrical connection 15. Theelectrical connection 15 is provided for connecting theelectrical heating element 14 to an external power supply with alternating current, in particular with 230 volts voltage. Theelectrical heater 13 is attached to thesuction line 9 in such a way that theelectrical heating element 14 is surrounded by the coolant in thesuction line 9. When electric power is supplied to theelectric heating element 14 via theelectric connection 15, theelectric heating element 14 heats up. Theelectric heating element 14 heats up the coolant in thesuction line 9. Thecoolant pump 1 is driven by means of theelectric motor 4. The pump element 7 rotates and conveys the heated coolant, in particular cooling water, from thesuction line 9 into thepump chamber 6 and from thepump chamber 6 to the pressure line 11, where it is fed into the coolant circuit of the drive assembly. - The advantage of this arrangement is the accelerated heating of the coolant when the
coolant pump 1 is driven. The existing installation space of thecoolant pump 1 is optimally utilized by theelectrical heater 13, which has a simple design. By connecting thecoolant pump 1 to an external power supply, the power supply can be ensured in an environmentally friendly manner even when the engine is switched off or in cold weather. - In general, it may also be envisaged to use the heater in the discharge channel 11 of the
coolant pump 1. In this case, the heated coolant is not drawn in directly bypump 1, but is fed directly into the coolant circuit of the drive assembly. - The electric motor is a brushless DC motor comprising a
rotor 21 connected to amotor shaft 16 and rotatably mounted in themotor housing 5. Therotor 21 is provided with permanent magnets. Astator 17 is arranged around therotor 21, which carries a number of windings on an iron core not shown. When suitably driven, the windings generate a magnetic field which drives therotor 21 to rotate. The windings are usually wound in three phases and are accordingly provided with three electrical connections, via which the windings are connected to a controller (ECU) 18. Thecontroller 18 is supplied with power from the vehicleelectrical system 19 during driving operation. - As shown in
FIG. 2 , theelectric coolant pump 1 is also supplied by the externalpower supply network 15 when the drive assembly is stationary. Theheater 13 and atransformer 20 are connected to thepower supply network 15. Thetransformer 20 transforms the input voltage into an output voltage adapted to thepump motor 4, in particular 12 volts, 24 volts or 48 volts. Theelectric motor 4 of thecoolant pump 1 can be selectively supplied with power from the on-board power supply 19 or from theexternal power supply 15. Switching between the two energy sources is performed by means of thecontroller 18. When the drive assembly is at a standstill, theheater 13 and thecoolant pump 1 are supplied with current by the externalpower supply system 15. Theelectric motor 4 is operated at a low constant speed so that good heat dissipation and distribution of the heated cooling water can take place. In driving mode and with the drive assembly running, however, theelectric motor 4 is supplied with power from the vehicleelectrical system 19. - The application range is useful in all water-cooled cars and commercial vehicles and especially in hybrid vehicles, which already have an electrical connection that can be used to power the coolant pump and the heater.
- The
electric heater 13 and thecoolant pump 1 can be supplied with power externally so that efficient preheating of the drive assembly is possible. Cold-start problems with the internal combustion engine, such as increased emissions and increased wear, can be reduced or avoided by preheating the coolant in this way. In addition, warm air can be provided for interior ventilation at the start of driving, which increases driving comfort. It is also conceivable to use the heated coolant for stationary heating in the form of a parking heater. - It may also be envisaged to use the electric coolant pump for temperature control of an electrical load. Many such small, decentralized, electric coolant pumps can be used in a motor vehicle. For example, the coolant may be in thermal contact with an LED module of a motor vehicle headlight. In the event that the coolant is too cold, it can be heated by means of the heater.
- In another example embodiment, the electric coolant pump is provided for cooling/heating a battery pack of an electric vehicle.
- While example embodiments of the present disclosure have been described above, it is to be understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present disclosure. The scope of the present disclosure, therefore, is to be determined solely by the following disclosure.
Claims (15)
1-15. (canceled)
16: An electric coolant pump for a cooling circuit of a motor vehicle, the electric coolant pump comprising:
a pump chamber;
a suction line which leads into a suction side of the pump chamber;
a discharge channel which leads out of a pressure side of the pump chamber; and
an electric motor with a controller; wherein
the electric coolant pump includes a heater which includes an electric heating element which projects into the suction line or the discharge channel and which can be flushed by the coolant;
the electric heating element includes at least two operating states including a first heating element operating state in which the electric heating element can be operated from an external power supply system and a second heating element operating state in which the electric heating element can be operated from an on-board power supply system of the motor vehicle;
the controller of the electric motor is configured or programmed such that the electric motor includes at least two motor operating states including a first motor operating state in which the electric motor can be operated from the external power supply system and a second motor operating state in which the electric motor can be operated from the on-board power supply system; and
the electric coolant pump includes a first electrical connection to connect to the external power supply system and a second electrical connection to connect to the on-board power supply system, the first connection being set up to supply energy to the heating element and the electric motor in the first heating element operating state and the first motor operating state.
17: The electric coolant pump according to claim 16 , wherein the electric coolant pump includes a transformer to drive the electric motor with an alternating current of the external power supply system in the first heating element operating state and the first motor operating state.
18: A motor vehicle comprising:
at least one drive assembly; and
the electric coolant pump according to claim 16 ; wherein
the coolant pump is structured to circulate coolant in a cooling circuit of the at least one drive assembly of the motor vehicle.
19: The motor vehicle according to claim 18 , wherein the electric coolant pump includes a housing which defines a portion of the at least one drive assembly.
20: The motor vehicle according to claim 18 , wherein the at least one drive assembly includes a drive electric motor and/or an internal combustion engine.
21: A motor vehicle comprising at least one electrical consuming assembly and the electrical coolant pump according to claim 16 , wherein the coolant pump is structured to circulate coolant in a cooling circuit of the at least one electrical consuming assembly.
22: An electric motor vehicle comprising at least one battery pack and the electric coolant pump according to claim 16 , wherein the electric coolant pump is structured to circulate coolant in a cooling circuit of the at least one battery pack.
23: The motor vehicle according to claim 18 , wherein the motor vehicle includes internal electrical connections providing an electrical connection to the first and second electrical connections of the electric coolant pump.
24: The motor vehicle according to claim 18 , wherein the vehicle includes an external electrical connection connectable to an external power supply to supply power to the heater.
25: A method for operating an electric coolant pump of a cooling circuit of a motor vehicle, the motor vehicle including at least one drive assembly which is temperature-controlled by the cooling circuit, and the electric coolant pump including a pump chamber with a suction line which leads into a suction side of the pump chamber and a discharge channel which leads out of a pressure side of the pump chamber, and an electric motor with a controller, the electric coolant pump including a heater which includes an electric heating element which projects into the suction line or the discharge channel and which can be flushed by a coolant, and the heating element including at least two operating states including a first heating element operating state in which the electric heating element can be operated from an external power supply system and a second heating element operating state in which the electric heating element can be operated from an on-board power supply system of the motor vehicle, and the electric motor includes at least two operating states including a first motor operating state in which the electric motor can be operated from the external power supply system and a second motor operating state in which the electric motor can be operated from the on-board power supply system of the motor vehicle, and the electric coolant pump includes a first electrical connection to connect to the external power supply system and a second electrical connection to connect to the on-board power supply system, the first connection being operable to supply energy for the heating element and the electric motor in the first heating element operating state and the first motor operating state, the method comprising:
receiving a signal that the coolant is to be heated;
querying an operating state of the drive assembly and/or querying whether the motor vehicle is connected to the external power supply system; and
if the drive assembly is not running and/or the motor vehicle is connected to the external power supply system, operating the electric heating element and the electric motor respectively in the first heating element operating state and the first motor operating state.
26: The method according to claim 25 , wherein the controller of the electric motor is configured or programmed to execute the method.
27: The method according to claim 25 , wherein the electric motor is operated at a constant speed.
28: The method according to claim 25 , wherein the electric motor is operated in the second operating state when the drive assembly is running.
29: The method according to claim 25 , wherein a signal to heat the coolant is generated from a signal of a stationary heating operation.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019129068.6A DE102019129068A1 (en) | 2019-10-28 | 2019-10-28 | Electric coolant pump with heating element |
DE102019129068.6 | 2019-10-28 | ||
PCT/EP2020/076574 WO2021083585A1 (en) | 2019-10-28 | 2020-09-23 | Electric coolant pump with heating element |
Publications (1)
Publication Number | Publication Date |
---|---|
US20220356835A1 true US20220356835A1 (en) | 2022-11-10 |
Family
ID=72885492
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/772,494 Abandoned US20220356835A1 (en) | 2019-10-28 | 2020-09-23 | Electric coolant pump with heating element |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220356835A1 (en) |
EP (1) | EP4051887A1 (en) |
CN (1) | CN114787489A (en) |
DE (1) | DE102019129068A1 (en) |
WO (1) | WO2021083585A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8052850V0 (en) * | 1980-01-21 | 1980-01-21 | Arnaldo Baldessari | DEVICE FOR PRE-HEATING THE LIQUID OF THE MOTOR VEHICLE ENGINE COOLING CIRCUIT |
DE3447182A1 (en) * | 1984-12-22 | 1986-06-26 | Kromberg & Schubert, 5600 Wuppertal | Heater for the passenger compartment in motor vehicles |
DE19823603A1 (en) * | 1998-05-27 | 1999-12-02 | Behr Thermot Tronik Gmbh & Co | System for controlling coolant temperature of internal combustion engine of motor vehicle |
DE10230941B4 (en) * | 2002-07-09 | 2011-07-28 | Robert Seuffer GmbH & Co. KG, 75365 | Method and device for controlling the operating temperature of an internal combustion engine |
CN2564772Y (en) * | 2002-07-29 | 2003-08-06 | 于杲昱 | Engine preheater |
DE10325981A1 (en) * | 2003-06-07 | 2004-12-23 | Daimlerchrysler Ag | Liquid pump with heating element has suction line with associated electrical heating device for heating liquid; pump is provided to circulate cooling water in internal combustion engine cooling system |
DE102010052703A1 (en) * | 2010-11-26 | 2012-05-31 | Daimler Ag | Device for adjusting temperature of fuel cell of omnibus, has heating system operated by electric power source that is arranged external to motor vehicle, and secondary heating circuit coupled with primary heating circuit and fuel cell |
DE102011050199A1 (en) * | 2011-05-06 | 2012-11-08 | Dbk David + Baader Gmbh | Coolant circuit |
JP6206275B2 (en) * | 2014-03-19 | 2017-10-04 | トヨタ自動車株式会社 | vehicle |
US9291256B2 (en) * | 2014-03-24 | 2016-03-22 | Ford Global Technologies, Llc | Method for preheating a powertrain |
US20170248065A1 (en) * | 2014-08-19 | 2017-08-31 | Borgwarner Inc. | Thermal management system and method ofmaking and using the same |
DE102017011716A1 (en) * | 2017-12-18 | 2019-06-19 | Daimler Ag | Method for operating a vehicle |
-
2019
- 2019-10-28 DE DE102019129068.6A patent/DE102019129068A1/en active Pending
-
2020
- 2020-09-23 CN CN202080085038.7A patent/CN114787489A/en active Pending
- 2020-09-23 US US17/772,494 patent/US20220356835A1/en not_active Abandoned
- 2020-09-23 EP EP20792297.2A patent/EP4051887A1/en not_active Withdrawn
- 2020-09-23 WO PCT/EP2020/076574 patent/WO2021083585A1/en active Search and Examination
Also Published As
Publication number | Publication date |
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CN114787489A (en) | 2022-07-22 |
EP4051887A1 (en) | 2022-09-07 |
DE102019129068A1 (en) | 2021-04-29 |
WO2021083585A1 (en) | 2021-05-06 |
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