CN106985687B - Propulsion device, electric drive system and device for charging, inverting and feeding back - Google Patents

Propulsion device, electric drive system and device for charging, inverting and feeding back Download PDF

Info

Publication number
CN106985687B
CN106985687B CN201710151802.6A CN201710151802A CN106985687B CN 106985687 B CN106985687 B CN 106985687B CN 201710151802 A CN201710151802 A CN 201710151802A CN 106985687 B CN106985687 B CN 106985687B
Authority
CN
China
Prior art keywords
switching
switch
igbt
legs
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.)
Active
Application number
CN201710151802.6A
Other languages
Chinese (zh)
Other versions
CN106985687A (en
Inventor
T·延拜因
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN106985687A publication Critical patent/CN106985687A/en
Application granted granted Critical
Publication of CN106985687B publication Critical patent/CN106985687B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/24—Using the vehicle's propulsion converter for charging
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for 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
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T90/14—Plug-in 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to an electrically drivable propulsion device, an electric drive train and a device by means of which a charging operation, an inversion operation and a feedback operation between a first DC voltage and a second DC voltage can be realized with little additional hardware expenditure. The device is characterized in that: charging the battery by a dc voltage interface, hereinafter referred to as "charging operation"; supplying the motor with electric energy from a battery, hereinafter referred to as "inverter operation"; and electrical energy is fed back from the battery to the dc voltage interface, hereinafter referred to as "feed-back operation", and includes: a three-phase inverter having switching legs each having two switches; and-additional switches, wherein the additional switches are arranged between a first one of the switching legs and a second one of the switching legs and/or between the first one of the switching legs and a third one of the switching legs and are configured to be closed in the inverting mode and to be opened in the charging mode and in the flyback mode.

Description

Propulsion device, electric drive train and device for charging, inverting and feeding back
Technical Field
The invention relates to a propulsion device, an electric drive train and a method for charging, inverting and feeding back by means of an inverting charging topology. The invention relates in particular to the extension of the functional range of the inverter with little additional hardware expenditure.
Background
Inverters are known in the prior art which enable an alternating voltage (for example a three-phase alternating voltage) to be provided by a direct voltage accumulator (for example a traction battery) in order to operate an electric motor (for example a traction motor). In the case of three-phase motors, three branches each having two switches are generally used, the center tap between each two switches of the same branch being connected to the inductance of the electric machine. With appropriate control of the six switches, a dc power source (e.g., a battery or power supply) can now be used to power the motor.
US 2013/0057200 and US 2013/0307333 disclose corresponding inverter devices of the prior art.
Disclosure of Invention
Starting from the prior art described above, the object of the present invention is to create a new inverter charging topology which allows a battery, from which energy is fed back into the network or other batteries, to be charged from a DC power supply with as few additional components as possible.
The object set forth above is achieved according to the invention by a device for charging a battery from a dc voltage interface ("charging operation"), for supplying an electric machine with electrical energy from the battery ("inverter operation"), and for feeding back electrical energy from the battery into the dc voltage interface ("regenerative operation"). The device can thus achieve all the energy flow between the direct current source (or the battery connected in its place) and the traction battery for operating the electric machine by means of the electric machine or the inductance of the electric machine. The arrangement comprises a three-phase inverter with two switches per switching branch. The switching legs may each have two IGBTs (insulated Gate Bipolar transistors). The switches may be switched conductive or non-conductive independently of each other. In the case of IGBTs, parasitic diodes can be used as freewheeling diodes, in order to be able to achieve a through-current in one direction independently of the switching state of the respective switch. According to the invention, additional switches are provided, which are arranged between a first of the switching legs and a second of the switching legs and/or between the first of the switching legs and a third of the switching legs. The additional switches essentially represent the only additional hardware expenditure with respect to conventional inverters of this type. The additional switch is provided to be closed in the inverter mode and thus form a conventional inverter, and to be opened in the charging mode and in the regeneration mode in order to provide the additional functionality according to the invention. In this way, the battery can be charged by the DC charging station with few additional components (i.e. only one additional switch) independently of the voltage levels on both sides. Additionally, the battery can feed energy into the grid, wherein the voltage levels on both sides are independent of the battery. This is achieved by an optional additional inverter. Additionally, an external battery (for example, the traction battery of an external electric vehicle) can be charged independently of the voltage levels of the two batteries by means of the traction battery of the electric vehicle according to the invention. This can be advantageous, for example, in emergency situations or when breaking down, and ensures or improves the mobility of the electric vehicle. By means of the inventive concept, which is described further below, not only can the high-voltage battery be charged by a DC power source (DC-filling station), but also other batteries can be charged by the traction battery of an Electric Vehicle (EV), and the battery can feed back electrical energy into the electrical grid, so that the traction battery provides a DC output voltage. The output voltage to be regulated (battery voltage in charging mode and DC output voltage in feedback) can be regulated freely independently of the input voltage (charging: DC power supply, feedback: battery), i.e. the output voltage can be regulated arbitrarily and independently of the power supply. The output voltage does not mean the battery voltage but the voltage to be regulated, wherein either the battery or the DC power source (e.g., a charging device) can be charged as a function of the current flow. The term "power supply" is used here to refer either to the DC power supply or to the battery of the (present) vehicle under consideration, depending on the case.
The dependent claims show preferred embodiments of the invention.
The switching branches preferably have an interface for the respective inductance of the electric machine arranged between their respective switches. The proposed device is therefore provided for electrical connection to an electric motor (e.g. of three phases) and thus enables the integration of the inductance of the motor. These inductances can be used as energy stores in order to achieve the energy flow direction mentioned at the outset as independently of the respective voltage level as possible. The inductors can be electrically connected to one another, in particular in a star-shaped manner, as a result of which the applications and the currents discussed in connection with the figures can be derived.
The additional switch may comprise a first IGBT and a diode connected in parallel with the IGBT, and preferably has two IGBTs connected in anti-series and two diodes connected in parallel with one IGBT each. In this case, the diodes are oriented in particular opposite to one another, thereby preventing: the current can flow through one or the other diode independently of the switching state of the additional switch.
The additional switch is arranged for reversible galvanic isolation. In this embodiment, the additional switch can be understood as a "mechanical switch" or a "relay". This or another embodiment of the additional switch may prove suitable depending on which energy is moved between the direct current source and the battery or between the direct current source and the traction motor or between the traction motor and the battery.
A diode oriented in the blocking direction with respect to the dc voltage connection can be connected in parallel with each switch of the three switching branches. In other words, the respectively parallel diodes are oriented such that the direct current caused by the direct current source will not flow through any of the diodes.
Preferably, the device is arranged such that,
in charging operation and in the case of a voltage on the battery which is lower than the voltage on the direct voltage interface,
-pulsing a first switch of a first of the switching legs;
-opening a second switch of a first of said switching legs;
-opening a third switch of a second of said switching legs;
-opening a fourth switch of a second of said switching legs;
-a fifth switch of a third switching branch of the switching branches is opened; and is provided with
-a sixth switch opening a third one of the switching legs; and/or
In the case of charging operation and in the case of a higher voltage on the battery than on the direct voltage interface,
-closing a first switch of a first of the switching legs;
-opening a second switch of a first of said switching legs;
-opening a third switch of a second of said switching legs;
-pulsing a fourth switch of a second of said switching legs;
-a fifth switch of a third switching branch of the switching branches is opened; and is
-a sixth switch of a third of the switching legs is pulse controlled; and/or
In the case of a regenerative operation and a voltage at the dc voltage interface which is lower than the voltage of the battery,
-opening a second switch of a first of said switching legs;
-pulsing a third switch of a second of said switching legs;
-opening a fourth switch of a second of said switching legs;
-a fifth switch of a third one of the switching legs is pulse controlled; and
-a sixth switch opening a third one of the switching legs; and/or
In the case of a regenerative operation and a voltage at the dc voltage interface which is higher than the voltage of the battery,
-opening a first switch of a first of the switching legs;
-pulsing a second switch of a first one of the switching legs;
-a third switch closing a second of said switching legs;
-opening a fourth switch of a second of said switching legs;
-closing a fifth switch of a third of the switching legs; and
-opening a sixth switch of a third of the switching legs.
In this way, all the operating states and switching states described in fig. 5 can be realized.
According to a second aspect of the invention, an electric drive train for an electrically drivable propulsion device is proposed, which comprises a device according to any one of the preceding claims. In this way, the drive train can achieve the features, the combination of features and the advantages derived therefrom and in particular the situation and applications described in connection with the prior art.
According to a third aspect of the invention, an electrically drivable propulsion device (for example a car, a motorcycle, a two-wheeled vehicle, a transport vehicle, a truck, an air and/or water vehicle) is proposed, which has a device according to the first-mentioned inventive aspect and alternatively or additionally an electric drive train according to the second-mentioned inventive aspect. Advantages, features and combinations of features corresponding to the above-described embodiments are also obtained in connection with the electrically drivable propulsion device.
Independently of the inventive aspect, in certain installations the design of the additional switch can be designed by a simple semiconductor switch (for example only one IGBT instead of two IGBTs connected in series opposite to each other). The blocking of the through-current through the intrinsic diode can already be achieved by a suitable orientation of the individual IGBTs if, for example, the voltage level of the direct current source is always greater or always less than the voltage level of the battery.
Drawings
Embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the drawings:
fig. 1 is a first circuit diagram illustrating an embodiment of the device according to the invention and the through-current in a first operating state;
FIG. 2 is a first circuit diagram illustrating an embodiment of the apparatus according to the invention and the through current in a second operating state;
FIG. 3 is a first circuit diagram illustrating an embodiment of the apparatus according to the invention and the through current in a third operating state;
FIG. 4 is a first circuit diagram illustrating an embodiment of an apparatus according to the present invention and a passing current in a fourth operating state; and
fig. 5 is a switch state table for application to an apparatus according to an embodiment of the invention.
Detailed Description
FIG. 1 shows a circuit diagram of an exemplary embodiment of a device 1 according to the invention, in which the inverter is connected via an intermediate circuit capacitor C Z The direct current power supply DC, the energy flow between the motor 3 and the battery 4 are intermediately coordinated. As is conventional in the prior art, three switching legs SS1, SS2, SS3 are provided, each having two switches IGBT1, IGBT2, IGBT3, IGBT4, IGBT5, IGBT6. The respective inductances L1, L2, L3 of the electric machine 3 are connected in a star-like manner between the respective switches IGBT1, IGBT2, IGBT3, IGBT4, IGBT5, IGBT6. The additional switch S10 according to the invention has two further IGBTs IGBT7, IGBT8 which are connected in series opposite to one another and have an electrical connection on their gates. In order to provide an inverter operation, the additional switch S10 is switched on, thus realizing an electrical device of the type according to the inverter according to the prior art. To provide charging operation, the additional switch S10 is switched off. The illustrated through-current results in a feedback mode in which the additional switch S10 is opened and the supply voltage of the direct current supply DC is less than the voltage U Batt . For the return of electrical energy from the battery 4 to the direct current supply DC, the respective switches IGBT1 to IGBT6 are controlled with the signals shown, where S0 corresponds to the open switch and ST corresponds to the pulsed operation of the IGBTs. The current paths shown by the solid lines represent a uniform or constant current direction, while the current paths shown by the dashed lines represent intermittent current control or alternating direction current control. For example, the current I is derived for IGBT5ein I.e. I IGBT5ein : the switch IGBT5 of the third switching branch SS3 is switched on, and a current I results when the IGBT5 of the third switching branch SS3 is switched off IGBT5aus . In each case, the third inductance L3 is passed through by current in the same direction. Adapted correspondingly to pass through said second switching branch SS2The current passes through the switches IGBT3, IGBT4 and the second inductor L2.
Fig. 2 shows the device shown in fig. 1 in a second operating state, in which energy is fed back from the battery 4 to the direct current source DC, the additional switch S10 being opened and the voltage of the direct current source DC being greater than the voltage U of the battery 4 Batt . For energy to be fed back from the battery 4 to the direct current source DC, a battery voltage U is required Batt And (4) boosting the voltage. This application enables, for example, the charging of an external traction battery of similar design but at a higher voltage level by means of the internal traction battery 4. The switches IGBT1, IGBT4 and IGBT6 are switched off (control signal S0). The switches IGBT3, IGBT5 are permanently switched on (switching signal S1). The switch IGBT2 is operated in a pulsed manner (switching signal ST). The currents shown are obtained, wherein the same embodiments as in fig. 1 apply to this representation.
Fig. 3 shows the embodiment of the device 1 according to the invention discussed in connection with fig. 1 and 2, in which the battery 4 is charged and the voltage of the direct current supply DC is greater than the battery voltage U Batt . In this operating mode according to the invention, the additional switch S10 is also opened. The switches IGBT2 to IGBT6 are switched off (switching signal S0), while the switch IGBT1 is operated in a pulsed manner (switching signal ST). When the switch IGBT1 is switched off, a through-current is obtained through the intrinsic diode of the switch IGBT2, which through-current is transmitted through the first inductance L1 and the switch IGBT3 or IGBT5 in the direction of the battery 4. If the first switch IGBT1 is switched on in an electrically conductive manner, an intermittent through-current is obtained through the direct current source DC.
Fig. 4 shows the exemplary embodiment of the device 1 according to the invention described in conjunction with fig. 1 to 3 in a charging mode (charging of the battery 4 by the DC source DC), while the DC source DC has a voltage U higher than the battery voltage U Batt A smaller voltage. Accordingly, the voltage of the dc power supply must be boosted, for which the additional switch S10 is opened according to the invention, the first switch IGBT1 is switched on (switching signal S1), and the first switch IGBT1 is switched onThe second switch IGBT2 is switched off (switching signal S0) and the switches IGBT4, IGBT6 operate in a pulsed manner (switching signal ST). The switching state of the switches IGBT3, IGBT5 is not critical, since the current flow can be carried out via the respective intrinsic diodes. The battery 4 can thus be charged, although the battery 4 has a higher voltage level than the connected direct current source DC or the traction battery of the external vehicle used for charging.
The figures discussed above merely show the relevant operating states according to the invention, in which the additional switch S10 is open. In the case of the closed additional switch S10, which is electrically identical to the prior art, an alternative circuit diagram of a conventional inverter is obtained, the function of which is known to the expert and is therefore not further observed here.
Fig. 5 shows a diagram illustrating an overview of the operating point of the device according to the invention. The diagram according to fig. 5 reflects the switching states of all switches of the device according to the invention.

Claims (11)

1. A device (1) for charging, inverting and feeding back, wherein the device (1) is configured for
-charging the battery (4) from the direct voltage interface (DC), hereinafter referred to as "charging operation";
-supplying the electric machine (3) with electric energy coming from said battery (4), hereinafter referred to as "inverter operation" and
-feeding back electrical energy from said battery (4) into said direct voltage interface (DC), hereinafter referred to as "feed-back operation", said device comprising:
-a three-phase inverter (2) having switching legs (SS 1, SS2, SS 3) with two switches (IGBT 1, IGBT2; IGBT3, IGBT4; IGBT5, IGBT 6), respectively, and
-an additional switch (S10), wherein the additional switch (S10) is arranged
-between a first switching branch (SS 1) of said switching branches (SS 1, SS2, SS 3) and a second switching branch (SS 2) of said switching branches (SS 1, SS2, SS 3), and/or
-between a first switching branch (SS 1) of said switching branches (SS 1, SS2, SS 3) and a third switching branch (SS 3) of said switching branches (SS 1, SS2, SS 3), and said additional switch (S10) is arranged,
-closed in the inverter operation and open in the charging operation and in the regeneration operation.
2. The device (1) as claimed in claim 1, wherein the switching legs (SS 1, SS2, SS 3) have interfaces for the respective inductances (L1, L2, L3) arranged between their respective switches (IGBT 1, IGBT2; IGBT3, IGBT4; IGBT5, IGBT 6).
3. Device (1) according to claim 1 or 2, wherein between the respective switches (IGBT 1, IGBT2; IGBT3, IGBT4; IGBT5, IGBT 6) of the three switching legs (SS 1, SS2, SS 3) there is connected a respective inductance (L1, L2, L3) of the electric machine (3).
4. The device (1) according to claim 3, wherein the respective inductances (L1, L2, L3) are electrically star-connected to each other.
5. The device (1) according to claim 1 or 2, wherein the additional switch (S10) has a first IGBT (IGBT 7) and a diode (D7).
6. The device (1) according to claim 1 or 2, wherein the additional switch (S10) has two IGBTs (IGBT 7, IGBT 8) connected in series in opposite directions and two diodes (D7, D8) each connected in parallel with one IGBT (IGBT 7, IGBT 8).
7. The device (1) according to claim 1 or 2, wherein the additional switch (S10) is arranged for reversible electrical isolation.
8. The device (1) as claimed in claim 1 or 2, wherein each switch (IGBT 1, IGBT2; IGBT3, IGBT4; IGBT5, IGBT 6) of the three switching legs (SS 1, SS2, SS 3) is connected in parallel with a diode (D1-D6) oriented in a blocking direction with respect to the direct voltage interface (DC).
9. The device (1) according to claim 1 or 2, wherein the device is arranged to,
-in charging operation and in case the voltage on the battery (4) is smaller than the voltage on the direct voltage interface (DC),
-a first switch (IGBT 1) of a first switching leg (SS 1) of the switching legs (SS 1, SS2, SS 3) is controlled pulsed;
-opening the second switch (IGBT 2) of the first switching leg (SS 1) of said switching legs (SS 1, SS2, SS 3);
-opening the third switch (IGBT 3) of the second switching leg (SS 2) of the switching legs (SS 1, SS2, SS 3);
-a fourth switch (IGBT 4) to open a second switching branch (SS 2) of said switching branches (SS 1, SS2, SS 3);
-opening a fifth switch (IGBT 5) of a third switching leg (SS 3) of the switching legs (SS 1, SS2, SS 3); and
-opening a sixth switch (IGBT 6) of a third switching leg (SS 3) of the switching legs (SS 1, SS2, SS 3); and/or
-in the case of charging operation and in the case of a voltage on the battery (4) which is higher than the voltage on the direct voltage interface (DC),
-closing a first switch (IGBT 1) of a first switching leg (SS 1) of said switching legs (SS 1, SS2, SS 3);
-opening the second switch (IGBT 2) of the first switching leg (SS 1) of the switching legs (SS 1, SS2, SS 3);
-opening the third switch (IGBT 3) of the second switching leg (SS 2) of the switching legs (SS 1, SS2, SS 3);
-a fourth switch (IGBT 4) for pulsed control of the second switching branch (SS 2) of said switching branches (SS 1, SS2, SS 3);
-opening a fifth switch (IGBT 5) of a third switching leg (SS 3) of the switching legs (SS 1, SS2, SS 3); and
-a sixth switch (IGBT 6) for pulsed control of a third switching branch (SS 3) of said switching branches (SS 1, SS2, SS 3); and/or
-in case of regenerative operation and the voltage on the direct voltage interface (DC) is smaller than the voltage of the battery (4),
-opening the second switch (IGBT 2) of the first switching leg (SS 1) of said switching legs (SS 1, SS2, SS 3);
-a third switch (IGBT 3) for pulsed control of a second switch branch (SS 2) of said switch branches (SS 1, SS2, SS 3);
-opening a fourth switch (IGBT 4) of a second switching leg (SS 2) of said switching legs (SS 1, SS2, SS 3);
-a fifth switch (IGBT 5) for pulsed control of a third switch branch (SS 3) of said switch branches (SS 1, SS2, SS 3); and
-opening a sixth switch (IGBT 6) of a third switching leg (SS 3) of said switching legs (SS 1, SS2, SS 3); and/or
-in case of regenerative operation and the voltage on the direct voltage interface (DC) is higher than the voltage of the battery (4),
-opening a first switch (IGBT 1) of a first switching leg (SS 1) of said switching legs (SS 1, SS2, SS 3);
-a second switch (IGBT 2) of a first switching leg (SS 1) of the switching legs (SS 1, SS2, SS 3) is controlled pulsed;
-closing a third switch (IGBT 3) of a second switching branch (SS 2) of said switching branches (SS 1, SS2, SS 3);
-opening a fourth switch (IGBT 4) of a second switching leg (SS 2) of said switching legs (SS 1, SS2, SS 3);
-closing a fifth switch (IGBT 5) of a third switching branch (SS 3) of said switching branches (SS 1, SS2, SS 3); and
-opening a sixth switch (IGBT 6) of a third switching leg (SS 3) of said switching legs (SS 1, SS2, SS 3).
10. An electric drive train for an electrically drivable propulsion device (10), comprising a device (1) according to any one of the preceding claims.
11. An electrically drivable propulsion device (10) comprising a device (1) according to any one of the preceding claims 1 to 9 and/or an electric drive train according to claim 10.
CN201710151802.6A 2016-01-20 2017-01-19 Propulsion device, electric drive system and device for charging, inverting and feeding back Active CN106985687B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016200682.7 2016-01-20
DE102016200682.7A DE102016200682A1 (en) 2016-01-20 2016-01-20 Electrically powered means of locomotion, electric drive train and arrangement for charging, inverting and returning

Publications (2)

Publication Number Publication Date
CN106985687A CN106985687A (en) 2017-07-28
CN106985687B true CN106985687B (en) 2022-11-29

Family

ID=59256242

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710151802.6A Active CN106985687B (en) 2016-01-20 2017-01-19 Propulsion device, electric drive system and device for charging, inverting and feeding back

Country Status (2)

Country Link
CN (1) CN106985687B (en)
DE (1) DE102016200682A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11479139B2 (en) 2015-09-11 2022-10-25 Invertedpower Pty Ltd Methods and systems for an integrated charging system for an electric vehicle
DE102018207188A1 (en) * 2018-05-09 2019-11-14 Robert Bosch Gmbh Inverter, electric powertrain, vehicle and method of operating an inverter
CN111347890B (en) * 2018-12-21 2022-03-15 比亚迪股份有限公司 Vehicle, charging device and motor control circuit thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630505A (en) * 1992-01-31 1994-02-04 Fuji Electric Co Ltd Electric system for electric automobile
CN102751748A (en) * 2011-04-19 2012-10-24 本田技研工业株式会社 Charging system for electric vehicle
KR101549551B1 (en) * 2014-08-29 2015-09-03 엘지전자 주식회사 Driving apparatus for electric vehicle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080973B2 (en) * 2008-10-22 2011-12-20 General Electric Company Apparatus for energy transfer using converter and method of manufacturing same
FR2973963B1 (en) * 2011-04-08 2013-04-12 Valeo Sys Controle Moteur Sas CHARGE TRANSFER DEVICE AND METHOD FOR MANAGING THE SAME
US9263968B2 (en) 2011-06-22 2016-02-16 Eetrex, Inc. Bidirectional inverter-charger
KR101387717B1 (en) * 2012-02-06 2014-04-24 엘지전자 주식회사 Battery charger and electric vehicle having the same
DE102012203415A1 (en) * 2012-03-05 2013-09-19 Robert Bosch Gmbh Electrical propulsion system used in e.g. hybrid car, has two change-over contact portions which are coupled between direct voltage intermediate circuits, and energy store cell, and two bridge leg portions of one inverter respectively
KR101369052B1 (en) 2012-05-21 2014-03-04 엘에스산전 주식회사 Inverter-charger combined device for electric vehicles
CN202888900U (en) * 2012-10-30 2013-04-17 广东易事特电源股份有限公司 Storage battery charging and boosting circuit for online UPS (Uninterrupted Power Supply)
JP2014207766A (en) * 2013-04-12 2014-10-30 パナソニック株式会社 Overcurrent detector, charge and discharge system using the overcurrent detector, distribution panel, charge controller, vehicle charging/discharging device, on-vehicle electronic apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0630505A (en) * 1992-01-31 1994-02-04 Fuji Electric Co Ltd Electric system for electric automobile
CN102751748A (en) * 2011-04-19 2012-10-24 本田技研工业株式会社 Charging system for electric vehicle
KR101549551B1 (en) * 2014-08-29 2015-09-03 엘지전자 주식회사 Driving apparatus for electric vehicle

Also Published As

Publication number Publication date
DE102016200682A1 (en) 2017-07-20
CN106985687A (en) 2017-07-28

Similar Documents

Publication Publication Date Title
US9083274B2 (en) Power stage precharging and dynamic braking apparatus for multilevel inverter
US9787213B2 (en) Power cell bypass method and apparatus for multilevel inverter
US10476401B2 (en) Device for converting voltage, traction network and method for charging a battery
JP6172061B2 (en) Power supply device for power conversion circuit
KR101655625B1 (en) Apparatus and Method for converting power
US9774215B2 (en) Power conversion apparatus
US10218271B2 (en) Electric power system
US9000717B2 (en) Electrical charging system
CN113195297A (en) Circuit arrangement for a motor vehicle, in particular a hybrid or electric vehicle
CN106985687B (en) Propulsion device, electric drive system and device for charging, inverting and feeding back
US20140104906A1 (en) Energy storage device, and system having an energy storage device
US10447259B2 (en) Electronic circuit provided with plurality of switching elements connected to bus bar
JP6367744B2 (en) Power converter
US10256746B2 (en) Low-voltage discharge and actuation circuit for the traction converter of a vehicle
US20200055411A1 (en) Motor vehicle on-board power system for an electrically driven vehicle, and method for operating a motor vehicle on-board power system
US9143078B2 (en) Power inverter including SiC JFETs
JP2019531043A (en) Conversion device, associated control method and associated vehicle
US20150380776A1 (en) Internal energy supply of energy storage modules for an energy storage device, and energy storage device with such an internal energy supply
CN207853783U (en) Electric machine controller power switching modules driving power
US10811984B2 (en) Bidirectional DC-to-DC converter with voltage limitation device including switching element and voltage limitation capacitor
CN107852086B (en) Multi-phase inverter
KR101654755B1 (en) Elective control of an alternating current motor or direct current motor
CN109936297B (en) Power electronic module for a charging station, corresponding charging station and charging station
CN113039721A (en) Voltage source converter and method for operation of a voltage source converter
KR20220131989A (en) Electric motor drive with gallium nitride power switch with low-side short circuit safety condition

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant