EP4208364A1 - Drive system and method for operating a drive system - Google Patents
Drive system and method for operating a drive systemInfo
- Publication number
- EP4208364A1 EP4208364A1 EP21751543.6A EP21751543A EP4208364A1 EP 4208364 A1 EP4208364 A1 EP 4208364A1 EP 21751543 A EP21751543 A EP 21751543A EP 4208364 A1 EP4208364 A1 EP 4208364A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control unit
- drive system
- drive
- energy source
- partial
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000009826 distribution Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 230000000717 retained effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- 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
- B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
-
- 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
-
- 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
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
-
- 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
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/023—Avoiding failures by using redundant parts
-
- 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
-
- 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
- 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
-
- 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
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the invention relates to a drive system, comprising a first partial drive system and a second partial drive system, each of which has at least one electric machine, at least one control electronics for controlling the at least one electric machine, an energy source and an energy source control unit for monitoring and controlling the energy source.
- the invention also relates to a method for operating the drive system proposed according to the invention.
- the invention also relates to a vehicle which includes the drive system proposed according to the invention and/or which is set up to carry out the method proposed according to the invention.
- the drive system of electrically powered vehicles (Electric Vehicle, EV) consists of an energy source, an energy source control unit, an electric machine and control electronics.
- Autonomously driven vehicles have built-in redundancies to avoid breakdowns due to a fault in the drive system. i.e. individual components are at least duplicated and only take over the corresponding task in the event of a fault, which is also referred to as cold redundancy, or are designed in the drive system in such a way that they also take over the corresponding tasks in support of part or up to 50% even if there is no fault , also known as warm redundancy.
- the sub-drive system drives the rear axle and another sub-drive system drives the front axle, there is already a certain redundancy, since if one component fails, one axle can continue to operate without errors and the vehicle can therefore continue to move can be, whereby a breakdown of the vehicle in moving traffic is avoided.
- the vehicle can continue to the right edge of the road, to the emergency lay-by or to the next parking lot and be safely parked there.
- Different remaining ranges or remaining travel times mean different safe stop levels (SSL) that can be achieved.
- SSL plays a crucial role in autonomously driven vehicles in particular. The higher the SSL, the more effort and costs as well as space are required.
- the second partial drive system enables the journey to continue with less power and a shorter range.
- a higher-level drive control unit also referred to as a vehicle control unit (VCU) switches off the defective partial drive system.
- VCU vehicle control unit
- the entire partial drive system of an axis is also switched off today, since the components can no longer be monitored, controlled or regulated.
- Document JP 2016-196295 A describes a vehicle control system for controlling a vehicle, particularly an electrically powered vehicle.
- a drive system for a vehicle includes a first partial drive system and a second partial drive system.
- the first and the second partial drive system each have at least one electric machine, at least one control electronics for controlling the at least one electric machine, an energy source and an energy source control unit for monitoring and controlling the energy source.
- the drive system also includes a first drive control unit and a second drive control unit.
- the first drive control unit communicates both with the first partial drive system and with the second partial drive system.
- the variables from the respective control electronics such as current limits in the current state of the component, such as temperature, and the current actually provided to the electrical machine and output voltage of the control electronics, and energy source control unit, such as current limits in the current state of the component, such as state of charge, Temperature, state of health, as well as the voltage of the energy source and also error codes of the components, and possibly other variables, such as variables of the electrical machine, such as temperature, are transmitted to the drive control unit. These variables are used by the drive control unit as input variables.
- the first and the second drive control unit are equipped with identical software and each include an operational management system, which is a function block of the respective drive control units.
- the two drive control units have the same input signals.
- the first drive control unit serves as a master control unit and is set up to control and monitor the drive system.
- the first drive control unit reads in the values of the two partial drive systems.
- the first drive control unit controls the entire drive system and determines the target torque distributions for the respective partial drive systems without the second drive control unit.
- the second drive control unit serves as a slave control unit and is set up to take over the control and monitoring of the drive system in the error state of the first drive control unit. in error state the first drive control unit, the second drive control unit becomes a master control unit from a slave control unit.
- the second drive control unit has all the necessary signals from both partial drive systems and is therefore able to take over the control and monitoring of the entire drive system and to determine the target torque distributions for the first and the second partial drive system without the first drive control unit.
- the master function of the first drive control unit is retained and continues to control and monitor the entire drive system.
- the energy source is preferably designed as a battery which has one or more battery cells.
- the battery is preferably designed as a lithium-ion battery.
- the energy source can advantageously also be in the form of a fuel cell module which has one or more fuel cells.
- the energy source can be designed as a capacitor module that has one or more capacitors.
- the capacitor can preferably be designed as a supercapacitor (supercapacitor, SC).
- the first and/or the second partial drive system preferably each have an auxiliary energy source control unit for monitoring and controlling the energy source.
- the respective auxiliary energy source control unit is set up to take over the monitoring and control of the energy source in the event of a fault in the energy source control unit.
- Variables from the energy source of the first and second partial drive systems such as battery cell voltage, current and temperature, are transmitted to the energy source control unit and auxiliary energy source control unit assigned to the respective energy sources.
- the energy source control unit serves as a master control unit and is set up to control and monitor the energy source assigned to it.
- the auxiliary energy source control unit serves as a slave control unit and is set up to take over the control and monitoring of the energy source assigned to it in the error state of the energy source control unit.
- the auxiliary power source controller in the Error state of the power source controller, the auxiliary power source controller becomes a master controller from a slave controller. In the error state of the auxiliary energy source control unit, the master function of the energy source control unit is retained and continues to control and monitor the energy source assigned to it.
- the first and the second drive control unit preferably communicate with the first and the second drive train system via a communication bus, such as a CAN bus.
- a communication bus such as a CAN bus.
- the communication between the drive control unit and the partial drive system can also take place via a point-to-point connection.
- the drive control unit is connected directly to the control variables of the energy source control unit and the control electronics.
- the point-to-point connection and/or the communication bus are preferably designed redundantly.
- a method for operating the drive system according to the invention is also proposed.
- the method proposed according to the invention comprises the following method steps:
- the method proposed according to the invention preferably also comprises the following method steps:
- a vehicle is also proposed which includes the drive system proposed according to the invention and/or which is set up to carry out the method proposed according to the invention.
- a failure of an electronic controller here the drive control unit or energy source control unit, which controls the components of a partial drive system, does not necessarily have to lead to the shutdown of this partial drive system. If all components continue to work without errors, control can be taken over elsewhere.
- the energy available in the energy source can be used to continue operating the partial drive system of the vehicle with the axle-related components, the control electronics and the electrical machines. This means that the entire drive system is functional and consequently no restrictions are to be expected in terms of performance, driving pleasure, adherence to schedules for buses or shuttles and range, which also means that the maximum SSL is achieved.
- Figure la is a schematic representation of a drive system in the prior art according to a first embodiment
- Figure lb is a schematic representation of the data transmission of the drive system according to the first embodiment
- Figure 2a is a schematic representation of the drive system in the prior art according to a second embodiment
- FIG. 2b shows a schematic representation of the data transmission of the drive system according to the second exemplary embodiment
- FIG. 3a shows a schematic representation of the drive system proposed according to the invention
- FIG. 3b shows a schematic representation of the data transmission of the drive system proposed according to the invention.
- Figures la and 2a each show a schematic representation of a vehicle 10 with a drive system 20 in the prior art
- Figures lb and 2b each show a schematic representation of the data transmission of the respective drive systems 20 according to Figures la and 2a.
- the respective drive system 20 comprises a first drive train system 30 and a second drive train system 40.
- the first drive train system 30 is used to drive a rear axle 32 and the second drive train system 40 is used to drive a front axle 42.
- the first and second drive train systems 30, 40 each have two electric machines 50, each comprising control electronics 52, and a gear 54 on.
- the first and second partial drive systems 30, 40 also each have an energy source 60 with an energy source control unit 62.
- a first drive control unit 72 is assigned to the first partial drive system 30
- a second drive control unit 74 is assigned to the second partial drive system 40 .
- Both drive control units 72, 74 must be coordinated by a drive control unit coordinator 76 and the driving behavior must be optimally adjusted to the operating point.
- the variables from the energy source control unit 62 and the control electronics 52 and possibly other variables, such as variables of the electrical machine 50, such as temperature, of the respective drive control unit 72, 74 are used as input variables.
- Each propulsion control unit 72,74 includes a sub-operation management system 92 which is a functional block and determines the optimal operating strategy of the sub-propulsion system 30,40. Both propulsion control units 72, 74 then report the optimum operating conditions to the propulsion control unit coordinator 76, which has a functional block, namely a higher-level operations management system 94. This determines the overall operating strategy and reports the calculated target torque distributions to the respective control electronics 52 of the electrical machines 50. The target torque distributions will all be different, depending on the load on the axles 32, 42 or the electrical machines 50 and the charge states of the energy sources 60 etc.
- the structure of the drive system 20 has a first drive control unit 72, which acts as a master control unit, and a second drive control unit 74, which represents a slave control unit. Both drive control units 72, 74 communicate with one another via a communication bus 84 and contain the same partial operation management system 92.
- the first drive control unit 72 controls the first partial drive system 30 or the rear axle 32
- the second drive control unit 74 controls the second partial drive system 40 or the front axle 42 at.
- Only the higher-level operational management system 94 is anchored additionally and only in the first drive control unit 72 .
- Each drive control unit 72, 74 processes the information supplied by the components, such as current, torque limits, etc., and is able to operate the respective sub-drive system 30, 40. With two functioning drive control units 72, 74 runs the overall operating strategy in the first drive control unit 72, which serves as a master control unit, and determines the desired torque splits for all electric machines 50.
- the vehicle 10 will be driven solely by the second drive control unit 74 and its associated components.
- the second drive control unit 74 becomes a master control unit from a slave control unit. A cross-axis torque distribution is therefore not necessary.
- the first drive control unit 72 remains the master control unit. An overall operating strategy does not need to be determined in this case either. In both cases only one partial drive system 30, 40 is active.
- the sub-operations management system 92 of the second drive control unit 74 supplies input variables via a communication bus 84 to the higher-level operations management system 94 of the first drive control unit 72.
- a failure of the communication bus 84 would also result in only the first sub-drive system 30 belonging to the first drive control unit 72 becomes active. In order to avoid a communication bus failure, a timeout or other communication bus errors, this is designed redundantly.
- FIG. 3a shows a schematic representation of a vehicle 10 with a drive system 20 proposed according to the invention
- FIG. 3b shows a schematic representation of the data transmission of the drive system 20 proposed according to the invention
- the drive system 20 proposed according to the invention comprises a first partial drive system 30 and a second partial drive system 40.
- the first partial drive system 30 is used to drive the rear axle 32 and the second partial drive system 40 is used to drive the front axle 42.
- the first and second partial drive systems 30, 40 each have two Electrical machines 50, each of which includes control electronics 52, and a transmission 54.
- the first and second partial drive systems 30, 40 also each have an energy source 60 with an energy source control unit 62.
- the drive system 20 proposed according to the invention also includes a first drive control unit 72 and a second drive control unit 74.
- the two drive control units 72, 74 are equipped with identical software and each include an overall operation management system 96, which is a functional block of the respective drive control units 72, 74.
- both drive control units 72, 74 have the same input signals.
- the second drive control unit 74 is additionally connected to the variables of the control electronics 52 and the variables of the energy source control unit 62 of the first partial drive system 30 .
- the connection can be made via communication bus 84 or also via point-to-point connection 82 directly with the control variables from energy source control unit 62 and control electronics 52 .
- the connection is designed redundantly to ensure fail-safety.
- the first drive control unit 72 serves as a master control unit and reads in the variables of the second drive system part 40 in addition to the own variables of the first drive system part 30 .
- the first drive control unit 72 controls the entire drive system 20 and determines the target torque distributions for the first and second partial drive systems 30, 40 or the drive of the rear axle 32 and the front axle 42.
- the second drive control unit 74 takes over control, now no longer just that of the second partial drive system 40, but that of the entire drive system 20.
- the second drive control unit 74 has all the necessary signals from both partial drive systems 30, 40 and is therefore able to determine the overall operating strategy and the target torque distributions without the first drive control unit 72.
- the second drive control unit 74 is now changed from a slave control unit to a master control unit.
- the master function of the first drive control unit 72 is retained, i. H. the first drive control unit 72 continues to take over the control of the entire drive system 20.
- the first drive control unit 72 still has all the necessary signals from both partial drive systems 30, 40 and is therefore able to determine the overall operating strategy and the target torque distributions even without the second drive control unit 74 .
- the energy from the energy source 60 of the partial drive system 30, 40 with the defective drive control unit 72, 74 is not wasted and is available to the vehicle 10 so that it can reach its destination without any reduction in performance.
- the energy source 60 can be designed as a battery, a fuel cell module or a capacitor module.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Automation & Control Theory (AREA)
- Human Computer Interaction (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020210990.7A DE102020210990A1 (en) | 2020-09-01 | 2020-09-01 | Propulsion system and method of operating a propulsion system |
PCT/EP2021/070920 WO2022048825A1 (en) | 2020-09-01 | 2021-07-27 | Drive system and method for operating a drive system |
Publications (1)
Publication Number | Publication Date |
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EP4208364A1 true EP4208364A1 (en) | 2023-07-12 |
Family
ID=77226793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21751543.6A Pending EP4208364A1 (en) | 2020-09-01 | 2021-07-27 | Drive system and method for operating a drive system |
Country Status (5)
Country | Link |
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US (1) | US20230211668A1 (en) |
EP (1) | EP4208364A1 (en) |
CN (1) | CN115996860A (en) |
DE (1) | DE102020210990A1 (en) |
WO (1) | WO2022048825A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020210990A1 (en) * | 2020-09-01 | 2022-03-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Propulsion system and method of operating a propulsion system |
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JP3175895B2 (en) * | 1993-04-28 | 2001-06-11 | 株式会社日立製作所 | Electric vehicle drive system |
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JP6485441B2 (en) * | 2016-12-26 | 2019-03-20 | トヨタ自動車株式会社 | Driving motor control device |
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JP6939441B2 (en) * | 2017-11-08 | 2021-09-22 | トヨタ自動車株式会社 | Control device |
DE102017221758A1 (en) | 2017-12-04 | 2019-06-06 | Robert Bosch Gmbh | Electric drive system and method for operating an electric drive system |
SI3790762T1 (en) * | 2018-05-04 | 2024-05-31 | H55 Sa | Battery monitoring system and method for electric or hybrid aircrafts |
DE102018213182A1 (en) * | 2018-08-07 | 2020-02-13 | Bayerische Motoren Werke Aktiengesellschaft | Control system for a motor vehicle and method for fault diagnosis in a control system |
DE102019209280A1 (en) * | 2019-06-26 | 2020-12-31 | Robert Bosch Gmbh | Vehicle and method for operating a vehicle |
US12051939B2 (en) * | 2019-07-30 | 2024-07-30 | Cummins Inc. | Back-up power supply generation technique for clocks and critical data saves for controllers |
DE102020210990A1 (en) * | 2020-09-01 | 2022-03-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Propulsion system and method of operating a propulsion system |
CN114932805A (en) * | 2022-04-29 | 2022-08-23 | 华为数字能源技术有限公司 | Driving device and electric automobile |
-
2020
- 2020-09-01 DE DE102020210990.7A patent/DE102020210990A1/en active Pending
-
2021
- 2021-07-27 US US18/000,791 patent/US20230211668A1/en active Pending
- 2021-07-27 CN CN202180053018.6A patent/CN115996860A/en active Pending
- 2021-07-27 WO PCT/EP2021/070920 patent/WO2022048825A1/en unknown
- 2021-07-27 EP EP21751543.6A patent/EP4208364A1/en active Pending
Also Published As
Publication number | Publication date |
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US20230211668A1 (en) | 2023-07-06 |
WO2022048825A1 (en) | 2022-03-10 |
DE102020210990A1 (en) | 2022-03-03 |
CN115996860A (en) | 2023-04-21 |
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