EP3532335A1 - Antriebssystem für ein elektrisch angetriebnes kraftfahrzeug - Google Patents
Antriebssystem für ein elektrisch angetriebnes kraftfahrzeugInfo
- Publication number
- EP3532335A1 EP3532335A1 EP17772051.3A EP17772051A EP3532335A1 EP 3532335 A1 EP3532335 A1 EP 3532335A1 EP 17772051 A EP17772051 A EP 17772051A EP 3532335 A1 EP3532335 A1 EP 3532335A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric motor
- drive system
- sub
- electric
- traction battery
- 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- Withdrawn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
- 238000004804 winding Methods 0.000 claims description 16
- 230000001360 synchronised effect Effects 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- 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
- 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
- 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
- B60L58/19—Switching between serial connection and parallel connection of battery 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/50—Structural details of electrical machines
- B60L2220/58—Structural details of electrical machines with more than three phases
-
- 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
Definitions
- the invention relates to a drive system for a motor vehicle with at least one electric motor, with a polyphase electric motor for driving the motor vehicle, with a traction battery for supplying the electric motor with electrical energy, wherein the traction battery is subdivided into a plurality of sub-modules, and wherein the sub-modules have a plurality of battery cells.
- Motor vehicles with at least one electric motor are usually electric vehicles or hybrid vehicles, which are known from the prior art.
- the electric vehicle or hybrid vehicles have an electric drive unit, which essentially consists of an electric motor, a traction battery, power electronics and optionally a transmission.
- the various known from the prior art designs differ in the electric motor used, in the execution of the traction battery or in the design of the power electronics.
- DE 10 2015 101 093 AI describes, for example, a drive unit of an electric vehicle with a multi-phase electric motor, which is controlled by means of power electronics and supplied with electrical energy.
- the power electronics are connected to a traction battery and serve, among other things, to redirect the electric power provided by the traction battery into a current required to operate the electric motor.
- the power electronics direct a DC power provided by the traction battery into an alternating current required to operate the electric motor.
- the traction batteries installed in an electric vehicle are usually lithium-ion batteries, which are characterized among other things by high energy densities, thermal stability and low self-discharge.
- the lithium-ion batteries have a plurality of individual battery cells, the traction battery having voltages of several 100V due to the wiring of the individual battery cells.
- the individual battery cells are connected directly to a traction battery or submodules and the submodules together to form a traction battery,
- Uslichenwelse the traction battery is connected via a central power electronics to the electric motor
- disadvantage of such a design is that voltages of several 100 V through the Power electronics flow, whereby expensive semiconductors must be used in the production of the central power electronics.
- Another disadvantage is that a failure of the power electronics leads to a failure of the entire drive system.
- the invention is therefore based on the object to avoid the above-mentioned disadvantages.
- each submodule has its own power electronics, each submodule being electrically connected to at least one phase of the electric motor via its own power electronics, the electric motor can be supplied with electrical current from the individual submodules independently of the other submodules, a failure of a submodule or the power electronics of a submodule would only lead to a power loss of the electric motor and not to a total failure of the entire drive system. So the reliability of the Drive system increases.
- each phase of the polyphase electric motor at least two independent windings, whereby the reliability of the drive system is increased, as the electric motor continues can be operated, even if one of the two winding, for example, by a breakage of the wire, fails.
- the electric motor on three phases, each with three independent windings, wherein the traction battery is subdivided into nine sub-modules and the sub-modules via one winding is electrically connected to the three phases of the electric motor.
- the subdivision of the traction battery into nine sub-modules results in each individual sub-module having a low voltage compared to the voltage of the traction battery, thereby reducing the risks posed by the traction battery in the event of a crash.
- the life of the individual battery cells can be increased because the distribution of the traction battery in nine sub-modules, the charging of the battery cells can be made evenly.
- the sub-modules By connecting the individual sub-modules with all three phases of the electric motor, the sub-modules interact completely independently of the other sub-modules with the electric motor, whereby the reliability of the drive system is increased.
- the electric motor on three phases, each with three independent windings, wherein the traction battery is divided into nine sub-modules and each Submodule via one winding is electrically connected exclusively to one phase of the electric motor.
- the electric motor is a synchronous motor.
- DC motors, reluctance motors, and polyphase synchronous motors are used in drive systems for an electric vehicle.
- the permanent-magnet synchronous motors are characterized by high power density and high efficiency.
- Figure 1 shows a motor vehicle with a drive system in a schematic representation
- Figure 2 shows an inventive embodiment of a drive system according to the invention in a schematic representation.
- the drive system 20 can be used in a purely electrically driven electric vehicle or in a hybrid vehicle, wherein in the hybrid vehicle, the drive power is provided by an internal combustion engine and an electric motor.
- the drive system 20 includes an electric motor 22 for providing drive power, the drive system 20 for driving wheels 60, 62.
- the EJektromotor 22 via a transmission gear 24 and a differential gear 26 with the wheels 60, 62 connected.
- An alternative embodiment of the drive system 10 is to arrange the electric motor in the wheel hub, whereby the wheels are driven directly.
- Figure 2 shows schematically the drive system 20 according to the invention consisting of the electric motor 10 and the traction battery 30.
- the traction battery 30 is designed as a high-voltage battery, wherein the traction battery 30 has a voltage of several 100V. In this case, the traction battery 30 divides into several sub-modules in the present embodiment in nine sub-modules
- Each sub-module has a plurality
- the submodule can do this with the same number of battery cells so that all sub-modules 31 1-n have the same voltage.
- the number of battery cells 3 per submodule can be varied so that the voltages of the sub-modules 31 differ from each other.
- the individual voltages of the sub-modules exceed the voltage of 60 V is not to distinguish in any case the dangerous voltage for humans minimum voltage.
- each submodule is electrically connected directly to the electric motor 20, each sub-module has its own power electronics 34 1-n .
- each of the nine sub-modules has own power electronics
- i is the one through the submodules provided electrical power is converted into an electric current required to operate the electric motor 20.
- the electric motor 20 is a Synchronous motor operated by AC voltage. The one of the
- Submodules 31i- n of the traction battery 20 provided electrical power is a direct current, so that the direct current via the power electronics 34 1-n of the submodule 31i -n is converted into alternating current.
- the electric motor 22 is a three-phase, permanent-magnet synchronous motor, wherein a constantly magnetized rotor is entrained by a moving magnetic rotating field in the stator.
- each phase of such an electric motor has a winding, which are energized with a time delay.
- each phase has three windings, so that the electric motor 22 has a total of nine windings. In this way, the electric motor 22 can continue to be operated, even if, for example, a winding fails.
- FIG. 3 schematically shows the electric motor 22 with its three phases, the electric motor 22 being supplied with alternating voltage and all three phases of the electric motor 22 being supplied with electrical current via each power electronics 34i-n of the respective submodules 31 1-n .
- FIG. 4 schematically shows the electric motor 22 with its three
- each sub-module 31 1-n fed via its power electronics 34- n exclusively a phase of the electric motor 22 with electric current.
- Each winding of the electric motor 22 is electrically connected exclusively to a submodule 31 1-n .
- three of the power electronics 34 1-n of the respective submodule 31 1-n are shown by way of example, which each connect to one phase.
- the electric motor 20 is supplied with electrical current by all sub-modules 31 1-n of the traction battery 30. Because the submodules 31 1-n have their own power electronics 34 1-n and are therefore independent of one another, for example, the failure of a submodule or the power electronics 34 1-n does not lead to a failure of the entire drive system 10. In this way, the Reliability of the drive system 10 increased. It should be clear that other constructive embodiments of the drive system compared to the described embodiment are possible without departing from the scope of the main claim.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016120589.3A DE102016120589A1 (de) | 2016-10-27 | 2016-10-27 | Antriebssystem für ein Kraftfahrzeug |
PCT/EP2017/074169 WO2018077549A1 (de) | 2016-10-27 | 2017-09-25 | Antriebssystem für ein elektrisch angetriebnes kraftfahrzeug |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3532335A1 true EP3532335A1 (de) | 2019-09-04 |
Family
ID=59955570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17772051.3A Withdrawn EP3532335A1 (de) | 2016-10-27 | 2017-09-25 | Antriebssystem für ein elektrisch angetriebnes kraftfahrzeug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3532335A1 (de) |
DE (1) | DE102016120589A1 (de) |
WO (1) | WO2018077549A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB202003398D0 (en) * | 2020-03-09 | 2020-04-22 | Deregallera Holdings Ltd | Electric motor system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011003810A1 (de) * | 2011-02-08 | 2012-08-09 | Robert Bosch Gmbh | Steuerbarer Energiespeicher und Verfahren zum Betreiben eines steuerbaren Energiespeichers |
WO2014048462A1 (de) * | 2012-09-26 | 2014-04-03 | Siemens Aktiengesellschaft | Antriebsanordnung für ein kraftfahrzeug |
DE102013208583A1 (de) * | 2013-05-08 | 2014-11-13 | Robert Bosch Gmbh | Antriebsbatterie für den n-phasigen Betrieb eines Elektromotors sowie ein Antriebssystem und ein Verfahren zum Betrieb des Antriebssystems |
KR101549026B1 (ko) * | 2013-11-15 | 2015-09-01 | 엘지전자 주식회사 | 전기자동차 구동장치 |
DE102014203568A1 (de) * | 2014-02-27 | 2015-08-27 | Robert Bosch Gmbh | Elektrisches Antriebssystem |
DE102014212934A1 (de) * | 2014-07-03 | 2016-01-07 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zum Ladezustandsausgleich eines Energiespeichersystems |
DE102015101093A1 (de) | 2015-01-27 | 2016-07-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Elektrische Maschine |
-
2016
- 2016-10-27 DE DE102016120589.3A patent/DE102016120589A1/de not_active Withdrawn
-
2017
- 2017-09-25 WO PCT/EP2017/074169 patent/WO2018077549A1/de unknown
- 2017-09-25 EP EP17772051.3A patent/EP3532335A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2018077549A1 (de) | 2018-05-03 |
DE102016120589A1 (de) | 2018-05-03 |
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Legal Events
Date | Code | Title | Description |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20190517 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HUNKEL, DIRK |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20191217 |