CN112477584A - Method for predictably controlling a coolant pump of a drive system of a vehicle - Google Patents

Method for predictably controlling a coolant pump of a drive system of a vehicle Download PDF

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Publication number
CN112477584A
CN112477584A CN202010944698.8A CN202010944698A CN112477584A CN 112477584 A CN112477584 A CN 112477584A CN 202010944698 A CN202010944698 A CN 202010944698A CN 112477584 A CN112477584 A CN 112477584A
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CN
China
Prior art keywords
power electronics
coolant
temperature
coolant pump
vehicle
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.)
Pending
Application number
CN202010944698.8A
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Chinese (zh)
Inventor
朱尔根·蒂珀
约翰内斯·赫尔曼
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=74644937&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN112477584(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of CN112477584A publication Critical patent/CN112477584A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/34—Control not provided for in groups F04B1/02, F04B1/03, F04B1/06 or F04B1/26
    • 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
    • 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
    • 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
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • F04D15/0263—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump the condition being temperature, ingress of humidity or leakage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H02P29/68—Controlling or determining the temperature of the motor or of the drive based on the temperature of a drive component or a semiconductor component
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20272—Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20281—Thermal management, e.g. liquid flow control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20945—Thermal management, e.g. inverter temperature control
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/01—Purpose of the control system
    • F05D2270/11—Purpose of the control system to prolong engine life
    • F05D2270/112—Purpose of the control system to prolong engine life by limiting temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/303—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/40—Type of control system
    • F05D2270/44—Type of control system active, predictive, or anticipative

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention relates to a method for predictably controlling a coolant pump of a drive system of a vehicle, wherein the coolant pump (14) is operated via an electric drive (15) to circulate coolant, the electric drive being actuated by means of power electronics (16). In the method, the coolant volume flow delivered by the coolant pump (14) is controlled by a service-life-related critical temperature of the power electronics (16).

Description

Method for predictably controlling a coolant pump of a drive system of a vehicle
Technical Field
The invention relates to a method for predictably controlling a coolant pump of a drive system of a vehicle, wherein the coolant pump is operated via an electric drive for circulating a coolant, the electric drive being controlled by means of power electronics.
Background
The drive system in the vehicle is cooled by a liquid coolant at medium power (> 50kW) to high power (300 kW). The required coolant flow and coolant pressure are generated by an electrically driven pump. The pump output is usually predefined by the vehicle manufacturer in the form of a pump characteristic curve. Furthermore, the pump power is dependent on the temperature of the coolant or the temperature-dependent viscosity of the coolant. Since the coolant pump is controlled according to temperature or pressure, the load of the coolant pump is significantly higher than required.
Disclosure of Invention
The object of the invention is to provide a method for predictably controlling a coolant pump, in which the thermal load of the inverter of the power electronics is varied.
According to the invention, this object is achieved in that the coolant volume flow delivered by the coolant pump is controlled by a service-life-related critical temperature of the power electronics. This has the advantage that the coolant pump is controlled independently of its power parameters, such as volume flow and pressure. Although the coolant pump may be aged more quickly than the power electronics by the control, its service life is predictively determined. However, since the coolant pump is more cost-effective than the power electronics, an early replacement of the coolant pump reduces the maintenance effort compared to a replacement of the power electronics.
The remaining service life of the power electronics is advantageously determined as a function of the real-time driving behavior of the vehicle, wherein a temperature difference between the real-time detected temperature of the power electronics and the temperature of the power electronics at the standard driving behavior is determined, and the coolant volume flow to be reset by the coolant pump is derived from this temperature difference. The influence of the real-time driving behavior of the vehicle on the service life of the power electronics can be predicted particularly precisely by studying it.
In one embodiment, the temperature of the power electronics device detected in real time is calculated from the power loss of the power electronics device. Since this power loss can be derived simply from a characteristic curve of the power electronics or from an online calculation, the temperature can be determined cost-effectively.
In one variant, the real-time vehicle driving behavior is determined as a vehicle load behavior over a predefined driving time period, wherein the predefined driving time period is selected such that a sufficient amount of driving information is obtained to determine the remaining service life of the power electronics. Here, the load characteristic is regarded as the driving behavior of the driver of the vehicle currently traveling. Since the driving behavior of different drivers can be very different, the actuation of the coolant pump can be determined with high accuracy on the basis of the current driving style in each case.
In one embodiment, the standard driving characteristic corresponds to a partial load driving characteristic of the vehicle. Advantageously, a running characteristic preset by a vehicle manufacturer may be used as the standard running characteristic.
Advantageously, the power loss calculation of the power electronics and/or the temperature calculation of the power electronics and/or the determination of the temperature difference are carried out continuously during the real-time driving behavior of the vehicle. Real-time parameters are thus always provided for the method to determine the predictable service life of the power electronics.
In a further embodiment, the determination of the number of temperature differences is performed by means of a statistical algorithm, preferably a rain flow algorithm. A simple known algorithm is used.
In one refinement, a new driving behavior is set as a function of the resulting remaining service life of the power electronics and the volumetric flow of the coolant pump is reduced. The coolant pump can thus be controlled predictively, with the elimination of parameters such as the temperature and pressure of the coolant pump.
Drawings
The invention has a variety of embodiments. One of which is illustrated in detail in the accompanying drawings shown in the drawings.
In which is shown:
figure 1 shows a principle schematic of a drive train of a vehicle with an electric machine,
figure 2 shows an embodiment of the method according to the invention,
figure 3 shows a schematic diagram of a service life characteristic curve of a power electronic device,
fig. 4 shows an exemplary illustration of a plurality of different driving characteristics of a vehicle.
Detailed Description
A schematic diagram of an exemplary drive train of a hybrid vehicle is shown in fig. 1. The drive train 1 comprises an internal combustion engine 2 and an electric motor 3. Between the internal combustion engine 2 and the electric motor 3, a hybrid disconnect clutch 4 is arranged immediately after the internal combustion engine 2. The internal combustion engine 2 and the hybrid clutch 4 are connected to each other via a crankshaft 5. The electric motor 3 has a rotatable rotor 6 and a stationary stator 7. The output shaft 8 of the hybrid disconnect clutch 4 is connected to a transmission 9, which contains a coupling element, not shown in detail, such as a second clutch or a torque converter, which is arranged between the electric motor 3 and the transmission 9. The transmission 9 transmits torque generated by the internal combustion engine 2 and/or the electric motor 3 to drive wheels 10 of the hybrid vehicle. The electric motor 3 and the internal combustion engine 2 are controlled by a drive control unit 11.
A hybrid disconnect clutch 4 arranged between the internal combustion engine 2 and the electric motor 3 is engaged in order to start the internal combustion engine 2 with the torque generated by the electric motor 3 during travel of the hybrid vehicle or to travel with the internal combustion engine 2 and the electric motor 3 driven during a boost operation. However, purely electric driving with only the electric motor 3 can also be performed by disengaging the hybrid clutch 4. In this drive system 1, the electric motor 3 is operated via a power amplifier 12.
The electric motor 3 is cooled by a coolant circuit 13 in which coolant is circulated by a coolant pump 14 driven by a further electric motor 15. For actuating the further electric motor 15, power electronics 16 are provided, which comprise a microprocessor 17.
The microprocessor 17 comprises an algorithm for predictively controlling the coolant pump 14, as shown in fig. 2. In a first block 100, a current driving behavior of the vehicle is determined via the driving cycle, and in a block 200, the phase current is measured from the current driving behavior of the vehicle when the further electric motor 15 actuates the cooling pump 14. In block 300, a loss calculation of the power electronics 16 is performed from the phase currents. In block 400, a calculation is made from the lossThe temperature of the power electronics 16 is derived. In block 500, the temperature measured in real time at the power electronics 16 and the reference temperature T corresponding to the partial load state of the vehicle are determined by means of a rain algorithmkritThe temperature difference Δ T therebetween. The calculations in blocks 300 through 500 run continuously online. In block 600, the remaining useful life of the power electronics 16 is calculated from the temperature difference Δ T. The calculation is an average value with respect to a preset travel time period or a preset vehicle passing distance. In block 700, the future driving behavior and the volume flow are set for controlling the coolant pump 14, for example, by means of a simple comparator, as a function of the service life determined in block 600.
The number of permissible temperature change cycles of the power electronics 16 as a function of the temperature difference Δ T is shown in fig. 3. Region a shows a low temperature difference Δ T, which reduces the volumetric flow of the coolant pump 14. In the region B, a moderate temperature difference Δ T is shown, at which the volume flow remains unchanged. In contrast, a high temperature difference Δ T is shown in the region C, which increases the volumetric flow of the coolant pump.
Fig. 4 shows a schematic representation of a plurality of different driving characteristics of the vehicle, in which the junction temperature T of the semiconductor components of the power electronics 16 is shown as a function of time T. Curve D shows the course in the low-load characteristic, while curve E shows the temperature of the power electronics 16 in the partial-load characteristic and curve F shows the temperature in the full-load characteristic. Arrow G points to a low load characteristic corresponding to a small temperature difference Δ T with respect to the partial load characteristic and the full load characteristic. I.e. here a slightly lower flow rate of the coolant pump 14 is set. Arrow H also points to a low load characteristic, but this low load characteristic corresponds to an intermediate temperature difference with respect to the partial load characteristic and the full load characteristic. Here, a low flow rate may be set on the cooling water pump 14. In the region of the arrow K, the low-load characteristic corresponds to a high temperature difference Δ T with respect to the part-load characteristic and the full-load characteristic, wherein a significantly lower flow rate is set.
In the full-load driving characteristic, the components of the power electronics 16 are subjected to a severe thermal load. In this case, the coolant pump 14 is adjusted rapidly to a higher volumetric flow or a continuously higher volumetric flow may have to be delivered. This makes the power electronics meet the service life requirements of the vehicle manufacturer despite the high thermal load.
In the partial-load driving behavior or the low-load driving behavior, the components of the power electronics 16 are subjected to a lower thermal load, as a result of which the coolant pump 14 is set to a higher volumetric flow significantly slower or to a lower volumetric flow of the coolant pump 14 continuously. Since the thermal load on the power electronics 16 is significantly lower, and therefore the service life of the power electronics is significantly longer than necessary, the coolant pump 14 can also remain regulated at a low volumetric flow for a significantly longer time. By means of this method, the service life of the coolant pump 14 and of the power electronics 16 can be shortened in a targeted manner or reduced according to the service life requirements of the vehicle manufacturer.
List of reference numerals
1 drive train
2 internal combustion engine
3 electric motor
4 hybrid disconnect clutch
5 crankshaft
6 rotor
7 stator
8 driven shaft
9 speed variator
10 driving wheel
11 driver controller
12 power amplifier
13 coolant circuit
14 coolant pump
15 another motor
16 power electronic device
17 microprocessor

Claims (8)

1. Coolant for a predictive control of a drive system of a vehicleMethod for a pump, in which the coolant pump (14) is operated via an electric drive (15) for circulating the coolant, which is actuated by means of power electronics (16), characterized in that a service-life-related critical temperature (T) of the power electronics (16) is usedkrit) The volume flow of the coolant delivered by the coolant pump (14) is controlled.
2. Method according to claim 1, characterized in that the remaining service life of the power electronics (16) is determined from real-time vehicle driving characteristics, wherein the temperature of the power electronics (16) detected in real time and the temperature (T) of standard driving characteristics are determinedkrit) The temperature difference (Δ T) between the two and from which the coolant volume flow to be reset by the coolant pump (14) is derived.
3. The method according to claim 2, characterized in that the temperature of the power electronics (16) detected in real time is calculated from the power loss of the power electronics (16).
4. The method according to claim 2 or 3, characterized in that the real-time vehicle driving behavior is determined as a vehicle load behavior over a predefined driving time period, wherein the predefined driving time period is selected such that a sufficient amount of information about the real-time vehicle driving behavior is obtained to determine the remaining service life of the power electronics (16).
5. Method according to at least one of the preceding claims, characterized in that the standard driving characteristics correspond to part-load driving characteristics of the vehicle.
6. Method according to at least one of the preceding claims, characterized in that the power loss calculation of the power electronics (16), and/or the temperature calculation of the power electronics (16), and/or the determination of the temperature difference (Δ Τ) are carried out continuously during the real-time vehicle driving characteristic.
7. Method according to at least one of the preceding claims, characterized in that the determination of the temperature difference (Δ Τ) is performed by means of a statistical algorithm, preferably a rain flow algorithm.
8. Method according to at least one of the preceding claims, characterized in that a driving behavior is set and the coolant volume flow of the coolant pump (14) is reduced as a function of the resulting remaining service life of the power electronics (16).
CN202010944698.8A 2019-09-11 2020-09-10 Method for predictably controlling a coolant pump of a drive system of a vehicle Pending CN112477584A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019124429.3A DE102019124429B4 (en) 2019-09-11 2019-09-11 Method for predictively controlling a coolant pump of a vehicle powertrain system
DE102019124429.3 2019-09-11

Publications (1)

Publication Number Publication Date
CN112477584A true CN112477584A (en) 2021-03-12

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ID=74644937

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CN202010944698.8A Pending CN112477584A (en) 2019-09-11 2020-09-10 Method for predictably controlling a coolant pump of a drive system of a vehicle

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Country Link
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DE (1) DE102019124429B4 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021203514A1 (en) 2021-04-09 2022-10-13 Zf Friedrichshafen Ag Method for controlling a drive train of a motor vehicle
DE102021126752A1 (en) 2021-10-15 2023-04-20 Bayerische Motoren Werke Aktiengesellschaft Coolant pump, vehicle with such and method for controlling a coolant pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005003881A1 (en) 2005-01-24 2006-07-27 Volkswagen Ag Hybrid drive unit cooling controlling method for hybrid vehicle, involves controlling electrical input of coolant pump based on temperature of electrical engine and/or electronic devices formed in engine
DE102006009892A1 (en) 2006-03-03 2007-09-06 Audi Ag Device for controlling the coolant temperature of an internal combustion engine comprises an electrically operated coolant pump having a flow rate controlled by a unit receiving a voltage signal depending on a critical component temperature
JP5538247B2 (en) 2011-01-18 2014-07-02 日立オートモティブシステムズ株式会社 Cooling system for in-vehicle rotating electrical machine power converter
US10273867B2 (en) 2017-02-02 2019-04-30 GM Global Technology Operations LLC Prognostic system and method for an electric coolant pump

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DE102019124429B4 (en) 2022-03-24
DE102019124429A1 (en) 2021-03-11

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