EP3972870A1 - Verfahren zur erhöhung der verfügbarkeit eines elektrischen bremsmoments mindestens einer elektrischen maschine - Google Patents
Verfahren zur erhöhung der verfügbarkeit eines elektrischen bremsmoments mindestens einer elektrischen maschineInfo
- Publication number
- EP3972870A1 EP3972870A1 EP20725510.0A EP20725510A EP3972870A1 EP 3972870 A1 EP3972870 A1 EP 3972870A1 EP 20725510 A EP20725510 A EP 20725510A EP 3972870 A1 EP3972870 A1 EP 3972870A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- charge
- high state
- management system
- event
- 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- Withdrawn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
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000015556 catabolic process Effects 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 2
- 230000006378 damage Effects 0.000 description 5
- 241000156302 Porcine hemagglutinating encephalomyelitis virus Species 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/22—Dynamic electric resistor braking, combined with dynamic electric regenerative braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2009—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed for braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/15—Preventing overcharging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
- B60T13/585—Combined or convertible systems comprising friction brakes and retarders
- B60T13/586—Combined or convertible systems comprising friction brakes and retarders the retarders being of the electric type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D61/00—Brakes with means for making the energy absorbed available for use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2260/00—Operating Modes
- B60L2260/10—Temporary overload
- B60L2260/16—Temporary overload of electrical drive trains
- B60L2260/162—Temporary overload of electrical drive trains of electrical cells or capacitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/604—Merging friction therewith; Adjusting their repartition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Definitions
- the invention relates to a method for increasing the availability of an electrical braking torque of at least one electrical machine of a vehicle, regardless of the state of charge of an at least one battery coupled to it, which is operated via a battery management system.
- Battery-operated electric vehicles (BEV) and plug-in hybrid vehicles (PHEV) can transmit a braking torque to the wheels of the at least one electric machine that drives them in generator mode.
- This braking torque can be applied independently of or in parallel with the torque that a friction brake applies.
- the mechanical energy generated is converted by the electrical machine into a three-phase electrical alternating voltage and with the interposition of a converter in
- BEV battery-operated electric vehicle
- PHEV plug-in hybrid vehicle
- Vehicles can now brake autonomously, for example in the area of "active safety" in order to protect pedestrians by emergency braking triggered by a driver assistance system.
- the braking torque of a friction brake builds up within a time window of 200 to 300 milliseconds until the maximum achievable braking torque is available.
- a method for increasing the availability of an electrical braking torque of at least one electrical machine of a vehicle is proposed regardless of the state of charge of at least one battery coupled to it, which has a
- the following method steps are run through: a) operating the at least one electrical machine in generator mode, b) communicating the occurrence of an "emergency braking" event to the
- the maximum braking torque can be made available, so that valuable braking distance can be saved with regard to the resulting braking distance, since the braking torque that is applied by the electrical machine is made available without delay can be, in contrast to the above-mentioned time window, which is required to provide the maximum braking torque of the friction brake.
- the occurrence of the “emergency braking” event is transmitted from a control unit of the vehicle to the battery management system via a bus system.
- the at least one brake shunt can be installed on the at least one battery having a high state of charge.
- the at least one brake shunt can be installed on the at least one battery having a high state of charge.
- Method step d) to install at least one brake shunt on an additional control unit of the vehicle Both installation locations for the at least one brake shunt are possible in principle.
- step d) of converting excess electricity into heat when the "emergency braking" event occurs the occurrence of this event is transmitted from the vehicle's control unit to the battery management system and to the additional control unit via a coordinator, so that the information about the occurrence of the "Emergency braking" event is present at the same time on the battery management system and on the additional control unit.
- the solution proposed according to the invention advantageously ensures that the vehicle is braked with a maximum brake torque that can be generated when the “emergency braking” event occurs.
- the braking torque of the friction brake which is generated with a slight time delay, interacts on the one hand with the directly effective electrical braking torque of the at least one electrical machine on the other, so that the braking distance is minimized.
- the maximum regenerative braking torque that can be generated can only be set if the current generated in generator mode can also be absorbed by the at least one battery. It is generally harmful to battery cells, over long periods of time with too high a
- the battery having a high state of charge changes its operating mode, triggered by the notification of the occurrence of the “emergency braking” event by the vehicle control unit to the battery management system.
- This change in the operating state enables the state of charge to be high Having battery provides a maximum power consumption and consequently the protection of the battery in this case has a lower priority. Permanent degradation, ie lifetime damage to the battery through to a defect, can also be accepted.
- the method proposed according to the invention can also be used in drives with several electrical machines.
- the alternative solution according to method step d) of the method proposed according to the invention provides that electrical current generated in generator operation is converted into heat by at least one shunt, in particular a single-use braking shunt.
- at least one shunt in particular a single-use braking shunt.
- lifetime damage to batteries having a high state of charge is avoided.
- inexpensive single-use braking shunts could be used, which could be replaced in a workshop after an emergency braking maneuver.
- the installation location of the at least one brake shunt can be made either near the battery or in an additional control unit. If the brake shunts, in particular designed as single-use brake shunts, are installed on an additional control unit of the vehicle, the information regarding the occurrence of the
- the single figure shows the components of an electric drive system, for example an electric vehicle.
- FIG. 1 shows that an electrical machine 10, also designated by Mi, is connected in the direction of a feed 14 via a first converter 12 to a battery 32.
- Reference numeral 20 denotes an electrical machine M n , which is connected to an n th converter 22, via which a battery 32 is also charged in the direction of a feed 24.
- the two converters 12, 22 are connected to one another via a busbar 30, so that the battery 32 can be charged via all electrical machines 10, 20, Mi ... to M n .
- All of the currents that supply electrical current via the electrical machines Mi, M n , compare items 10, 20, operated in generator mode, are connected via the busbar 30 to the battery 32 to be charged.
- the battery 32 to be charged is controlled via a battery management system 34.
- the occurrence of an “emergency braking” event is transferred to a bus system 38 via a control device 36 of the vehicle, via which this information is passed to the battery management system 34, which controls the battery 32.
- the battery management system 34 generally operates the battery 32 in normal operation, so that the criteria of durability and self-protection of the battery 32 are taken into account.
- the criterion of self-protection is to be understood as a uniform balancing of the battery cells of the battery 32, and operating temperatures that are too high or too low are to be avoided. In normal operation of the battery 32 this is through the
- Battery management system 34 operated in such a way that a maximum
- An operating mode for the at least one battery 32 is stored in the battery management system 34, which takes account of the “emergency braking” event.
- the emergency braking operation of the battery 32 it is ensured that the battery 32 provides energy consumption up to the maximum regardless of its state of charge, in particular regardless of a relatively high state of charge. This means that the battery 32 is monitored for damage and destruction, in particular until a fire occurs in the event of overheating. For the usually very short period of an "emergency braking" event, the battery 32, even at a high
- Electric vehicle be it a plug-in hybrid vehicle (PHEV), for
- the battery 32 can change its normal behavior and allow a load beyond the normal current and voltage limits for the short period of the "emergency braking" event.
- the operating mode 1 of the battery 32 is changed, the
- current generated by the method proposed according to the invention in the generator mode of the electrical machine 10, 20 can be converted into heat in that the current is conducted to at least one brake shunt 40.
- the at least one brake shunt 40 is preferably designed as a “single-use brake shunt” which can be exchanged in the workshop after an emergency braking maneuver.
- the installation location of the at least one brake shunt 40 can be either in the vicinity or in the battery 32 or on an additional control device 44. If the brake shunt 40 or at least one single brake shunt is installed on the additional control device 44, a coordinator 46 must ensure that the information about the occurrence of the event
- the bus system 38 which may be a CAN bus, for example, is assigned the coordinator 46, for example a vehicle control unit (VCU).
- VCU vehicle control unit
- both the additional control device 44 and the control device 36 place their corresponding data on the bus system 38.
- the additional control device 44 is connected to the at least one brake shunt 40 and communicates with the bus system 38 and is electrically connected to the busbar 30 - as indicated in FIG.
- the battery management system 34 is integrated into the battery 32 in this system configuration.
- the system configuration shown in FIG. 1 can be used, for example, within a system 1, but the coordinator 46, which communicates with the bus system 38, can be omitted.
- system 2 the system configuration according to FIG. 1 can be used, but without the coordinator 46 analogous to system 1, with the brake shunt 40 and the additional control unit 44 being integrated into the battery management system 34 in the system permutation according to system 2 could be.
- system 3 the coordinator 46 can be provided.
- system 4 unlike the system permutations outlined above, system 1, system 2 or system 3, emergency braking information can be generated in one of the converters 12 or 22, and the control device 36 can be omitted.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019207481.2A DE102019207481A1 (de) | 2019-05-22 | 2019-05-22 | Verfahren zur Erhöhung der Verfügbarkeit eines elektrischen Bremsmoments mindestens einer elektrischen Maschine |
| PCT/EP2020/063038 WO2020234022A1 (de) | 2019-05-22 | 2020-05-11 | Verfahren zur erhöhung der verfügbarkeit eines elektrischen bremsmoments mindestens einer elektrischen maschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3972870A1 true EP3972870A1 (de) | 2022-03-30 |
Family
ID=70681843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20725510.0A Withdrawn EP3972870A1 (de) | 2019-05-22 | 2020-05-11 | Verfahren zur erhöhung der verfügbarkeit eines elektrischen bremsmoments mindestens einer elektrischen maschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3972870A1 (de) |
| DE (1) | DE102019207481A1 (de) |
| WO (1) | WO2020234022A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024207448A1 (de) * | 2024-08-06 | 2026-02-12 | Zf Friedrichshafen Ag | Verfahren zum Betreiben eines Antriebsstrangs, Antriebsstrang und Arbeitsmaschine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012007989A1 (de) * | 2012-04-20 | 2013-10-24 | Volkswagen Aktiengesellschaft | Verfahren und Vorrichtung zum Steuern der Leistungsdynamik der Batterie eines elektrisch angetriebenen Fahrzeugs |
| US9702304B1 (en) * | 2016-03-30 | 2017-07-11 | Toyota Motor Engineering & Manufacturing North America, Inc. | Automatic engine braking and increased regenerative capacity hybrid vehicle |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10226308A1 (de) * | 2002-06-13 | 2003-12-24 | Zahnradfabrik Friedrichshafen | Elektrodynamische Antriebsvorrichtung für ein Kraftfahrzeug sowie Verfahren zur Steuerung und Regelung derselben |
| US8062169B2 (en) * | 2007-04-30 | 2011-11-22 | Caterpillar Inc. | System for controlling a hybrid energy system |
| US7971666B2 (en) * | 2007-06-20 | 2011-07-05 | Ford Global Technologies, Llc | System and method of extending regenerative braking in a hybrid electric vehicle |
| JP6315622B2 (ja) * | 2016-03-04 | 2018-04-25 | 本田技研工業株式会社 | 車両 |
-
2019
- 2019-05-22 DE DE102019207481.2A patent/DE102019207481A1/de active Pending
-
2020
- 2020-05-11 WO PCT/EP2020/063038 patent/WO2020234022A1/de not_active Ceased
- 2020-05-11 EP EP20725510.0A patent/EP3972870A1/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012007989A1 (de) * | 2012-04-20 | 2013-10-24 | Volkswagen Aktiengesellschaft | Verfahren und Vorrichtung zum Steuern der Leistungsdynamik der Batterie eines elektrisch angetriebenen Fahrzeugs |
| US9702304B1 (en) * | 2016-03-30 | 2017-07-11 | Toyota Motor Engineering & Manufacturing North America, Inc. | Automatic engine braking and increased regenerative capacity hybrid vehicle |
Non-Patent Citations (1)
| Title |
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| See also references of WO2020234022A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020234022A1 (de) | 2020-11-26 |
| DE102019207481A1 (de) | 2020-11-26 |
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