DE19952334A1 - Starting assistance method for motor vehicle with high electrical system voltage involves arrangement consisting of e.g. three identical batteries in series and symmetrical DC/DC converter - Google Patents
Starting assistance method for motor vehicle with high electrical system voltage involves arrangement consisting of e.g. three identical batteries in series and symmetrical DC/DC converterInfo
- Publication number
- DE19952334A1 DE19952334A1 DE19952334A DE19952334A DE19952334A1 DE 19952334 A1 DE19952334 A1 DE 19952334A1 DE 19952334 A DE19952334 A DE 19952334A DE 19952334 A DE19952334 A DE 19952334A DE 19952334 A1 DE19952334 A1 DE 19952334A1
- Authority
- DE
- Germany
- Prior art keywords
- battery
- converter
- quadrant
- batteries
- arrangement
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
- F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/14—Starting of engines by means of electric starters with external current supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N2011/0881—Components of the circuit not provided for by previous groups
- F02N2011/0888—DC/DC converters
-
- 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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dc-Dc Converters (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Die Erfindung betrifft die Kombination einer speziellen Batterieanordnung und spezieller batteriesymmetrierender Zwei/Vierquadranten-DC/DC-Wandler zur Lösung der Starthilfeproblematik in Kraftfahrzeugen mit hoher Bordnetzspannung z. B. 42 V.The invention relates to the combination of a special battery arrangement and special battery symmetrizing two / four quadrant DC / DC converter for Solution of the jump start problem in motor vehicles with high vehicle electrical system voltage z. B. 42 V.
Im zukünftigen 42 V Bordnetz von Kraftfahrzeugen werden 36/42 V Batterien eingesetzt werden. Wenn diese Batterien leer sind und das Fahrzeug mit einem Starthilfekabel von einem anderen Fahrzeug aus gestartet werden soll, funktioniert das alte Verfahren, nämlich das Verbinden der beiden Fahrzeugbatterien mit einem Starthilfekabel nicht mehr, da im allgemeinen davon ausgegangen werden muß, dass das hilfeleistende Fahrzeug noch mit 12/14 V Bordnetz arbeitet. Ein Verbinden der Batterien kann im ungünstigsten Fall zu einer Explosion der Batterien führen.In the future 42 V vehicle electrical system, 36/42 V batteries will be used be used. If these batteries are empty and the vehicle with one Jumper cables should be started from another vehicle the old method works, namely connecting the two Vehicle batteries with a jumper cable no longer, because of it in general it must be assumed that the vehicle providing assistance is still 12/14 V Vehicle electrical system works. In the worst case, connecting the batteries to one Lead explosion of the batteries.
Die Lösung der Aufgabe besteht darin, daß im 36/42 V Fahrzeug die Batterie aus mehreren Einzelbatterien wie z. B. 3 × 12 V oder 12 V + 24 V oder einer 36 V Batterie mit 12 V Abgriff aufgebaut ist. Durch z. B. Abdeckungen muß dafür gesorgt werden, daß für einen Außenstehenden nur die Masse der Batterie und der 12 V-Abgriff der Batterie(n) sichtbar ist. An diesem Anschluß/Abgriff kann ein Außenstehender mit seinem Starthilfekabel seine 12 V Batterie aus seinem KFZ für die Starthilfe anschliessen, ohne daß sich für ihn im Vergleich zu den bisherigen Systemen etwas ändert. Der batteriesymetrierende DC/DC-Wandler im 42 V Fahrzeug entsprechend Bild 1 bis Bild 3 sorgt nun dafür, daß die Energie, die am 12 V Abgriff zur Verfügung gestellt wird gleichmäßig auf die anderen Batteriezellen umverteilt wird und das 42 V KFZ dann starten kann.The solution to the problem is that in the 36/42 V vehicle, the battery from several individual batteries such. B. 3 × 12 V or 12 V + 24 V or a 36 V battery with 12 V tap. By z. B. Covers must be ensured that only the mass of the battery and the 12 V tap of the battery (s) are visible to an outsider. An outsider can connect his 12 V battery from his car to the start aid with this jump starter cable without this changing anything compared to the previous systems. The battery-symmetrizing DC / DC converter in the 42 V vehicle according to Figure 1 to Figure 3 now ensures that the energy that is made available at the 12 V tap is evenly distributed to the other battery cells and that the 42 V vehicle can then start.
Auch im Betrieb, können 42 V und 12 V Verbraucher direkt an der Batterie angeschlossen werden, da die Erfindung dafür sorgt, daß der Ladezustand der Batteriezellen trotz unterschiedlicher Belastung durch die Symmetrierung identisch bleibt.Even in operation, 42 V and 12 V consumers can be connected directly to the battery be connected, since the invention ensures that the state of charge of the Battery cells identical despite different loads due to symmetrization remains.
Das Prinzip läßt sich am einfachsten und vorteilhaftesten in Systemen mit konventionellen Standard-Bleibatterien einsetzen. Die Symmetrierung hat jedoch auch in anderen Batterietechnologien Vorteile. Der beschriebene Wandler kann auch als bidirektionaler DC/DC-Wandler für z. B. 12 V /14 V eingesetzt werden um am Ausgang einzuspeisende Energie auf die 42 V Spannung umzuladen. The principle is easiest and most advantageous to use in systems use conventional standard lead acid batteries. However, the symmetry has advantages in other battery technologies too. The described converter can also as a bidirectional DC / DC converter for e.g. B. 12 V / 14 V can be used to transfer the energy to be fed in at the output to the 42 V voltage.
Der in Bild 4 dargestellte DC/DC Wandler/Verstärker läßt sich besonders kostengünstig und mit wenigen Bauteilen im Vergleich zu konventionellen DC/DC- Wandlern, die auf Einquadrantenbetrieb optimiert wurden und die in Foren und Diskussionsveranstaltungen der Automobilindistrie, als Stromversorgung von 12/14 V Geräten im Hochvoltbordnetz diskutiert werden, realisieren. Wandler dieser Art wurden von Bauteileherstellern wie Linear Technology Inc oder KFZ- Zulieferer wie Delphi öffentlich z. B. auf dem Bordnetzforum der Firma SICAN F + E GmbH, Hannover, vorgestellt.The DC / DC converter / amplifier shown in Figure 4 can be cost-effectively and with few components compared to conventional DC / DC converters, which have been optimized for single-quadrant operation and which are used in forums and discussion events in the automotive industry as a power supply of 12/14 V. Devices in the high-voltage electrical system are discussed, realize. Transducers of this type have been made public by component manufacturers such as Linear Technology Inc or automotive suppliers such as Delphi. B. presented on the wiring system forum of the company SICAN R + E GmbH, Hanover.
Die Teilkomponenten der Erfindung sind bereits praktisch erprobt. Die Zwei/Vierquadranten DC/DC Wandler nach Bild 4b und Bild 4c wurde in Audio- Anwendungen bereits ausgiebig beschrieben und erprobt. Ihre Schaltungen sind im Prinzip vergleichbar mit den Ausführungen von Servoverstärkern für Motoren und rückspeisefähigen DC-DC Wandlern.The sub-components of the invention have already been tested in practice. The two / four quadrant DC / DC converter according to Fig. 4b and Fig. 4c has already been extensively described and tested in audio applications. In principle, their circuits are comparable to the designs of servo amplifiers for motors and regenerative DC-DC converters.
Die Erfindung betrifft die Anordnung der Batterie und die Ausführung des speziellen DC/DC-Wandlers mit den kennzeichnenden Merkmalen der Ansprüche entsprechend Anlage und ermöglicht eine sehr zuverlässige, EMV-Optimierte und kostengünstige Lösung der Aufgabe. The invention relates to the arrangement of the battery and the execution of the special DC / DC converter with the characterizing features of the claims corresponding system and enables a very reliable, EMC-optimized and cost-effective solution to the task.
In Bild 1 zeigt die Anordnung des symmetrierenden DC-DC-Wandlers für ein System bestehend aus einer konventionellen 12 V Batterie und einer 24 V Batterie die z. B. aus zwei 12 V Batterien in Serienschaltung aufgebaut sein kann. Figure 1 shows the arrangement of the symmetrizing DC-DC converter for a system consisting of a conventional 12 V battery and a 24 V battery. B. can be constructed from two 12 V batteries in series connection.
Bild 2 zeigt die Anordnung des symmetrierenden DC-DC-Wandlers für ein System bestehend aus einer 36 V Batterie mit 12 V Abgriff. Figure 2 shows the arrangement of the symmetrizing DC-DC converter for a system consisting of a 36 V battery with 12 V tap.
Bild 3 zeigt die Anordnung des symmetrierenden DC-DC-Wandler aus Bild 1 und 2 als bidirektionaler DC/DC-Wandler dessen Ausgang als universeller Starthilfeanschluß benutzt wird und der gleichzeitig mit einem zusätzlichen Stützkondensator am Ausgang die 12 V/14 V Versorgung für das Bordnetz übernehmen kann, soweit dies nicht über dezentrale DC/DC-Wandler realisiert wird. Figure 3 shows the arrangement of the symmetrizing DC-DC converter from Figures 1 and 2 as a bidirectional DC / DC converter, the output of which is used as a universal jump starter connection and which, with an additional backup capacitor at the output, also provides the 12 V / 14 V supply for the vehicle electrical system can take over, as long as this is not realized via decentralized DC / DC converters.
Bild 4 zeigt die Ersatzschaltbilder des Wandlers in den Bildern 1-3 (Bild 4a) und die kostengünstige Realisierungsmöglichkeit mit Hilfe eines selbstschwingenden Präsisions-D-Verstärkers (Bild 4b) oder eines besonders emmissionsarmen bidirektionalen Cuk-Converters. Figure 4 shows the equivalent circuit diagrams of the converter in Figures 1-3 ( Figure 4a) and the cost-effective implementation option with the help of a self-oscillating precision D-amplifier ( Figure 4b) or a particularly low-emission bidirectional Cuk converter.
Die Anordnungen verhalten sich wie ein Zwei/Vierquadrantenverstärker dessen Tastverhältnis über den 1 : 2 Spannungsteiler mit den drei Widerständen R auf ca. 1 : 2 eingestellt wird. Dadurch entsteht am Ausgang eine mittlere Ausgangsspannung von 1/3 der Versorgungsspannung, im geladenen Zustand der 36 V Batterie also 12 V.The arrangements behave like a two / four quadrant amplifier Duty cycle via the 1: 2 voltage divider with the three resistors R to approx. 1: 2 is set. This creates a medium one at the exit Output voltage of 1/3 of the supply voltage, when charged the 36 V battery is 12 V.
Am Beispiel des selbstschwingenden D-Verstärkers erklärt sich das Verhalten wie folgt. Sinkt die mit dem Ausgang verbundene 12 V Batterie unter 12 V erhält sie Energie über S1. Die Anordnung verhält sich wie ein Tiefsetzsteller. Ist die Spannung an der 36 V Batterieklemme kleiner als 3 × der Spannung an der 12 V Batterie, z. B. bei einer externen Starthilfe, entzieht S2 Energie über L aus dem 12 V Anschluß und pumpt Sie wie bei einem Hochsetzsteller zu dem 36 V Anschluß.The behavior is explained using the example of the self-oscillating D-amplifier follows. If the 12 V battery connected to the output drops below 12 V, it receives it Energy over S1. The arrangement behaves like a buck converter. Is the Voltage at the 36 V battery terminal is less than 3 × the voltage at the 12 V Battery, e.g. B. with an external starting aid, S2 withdraws energy via L from the 12 V connection and pumps you to the 36 V like a step-up converter Connection.
Während der Strom durch die Induktivität L gleichförmig ist, sind die Ströme an den Versorgungsspannungspunkten des Wandlers getaktet. Mit einem entsprechenden Layout können die daraus entstehenden EMV-Störungen ausreichend gedämpft werden. Die Grundschaltung muß noch durch eine Strombegrenzung ergänzt werden. Die dazugehörigen Techniken sind in der elektrischen Antriebstechnik bekannt. While the current through inductor L is uniform, the currents are on clocked the supply voltage points of the converter. With a The resulting EMC interference can correspond to the corresponding layout be sufficiently damped. The basic circuit must be replaced by a Current limitation can be supplemented. The associated techniques are in the known electrical drive technology.
Der selbstschwingende Wandler hat gegenüber den auch für diese Anwendung in fragekommenden DC-DC-Wandtern wie sie z. B. mit Bauteilen von LTC, Unitrode, Maxim, etc, . . . aufgebaut werden den entscheidenden Vorteil, daß er sehr präzise ist und die im Kondensator C1 gespeicherte Fehlerspannung korrigiert. Damit ist er in der Lage die Klemmenspannung und damit den Ladezustand von Batterien im mV-Bereich präzise und mit wenig Aufwand zu korrigieren.The self-oscillating converter has in comparison to that for this application questionable DC-DC converters such as z. B. with components from LTC, Unitrode, Maxim, etc,. , , be built up the crucial advantage that it is very precise and corrects the error voltage stored in capacitor C1. So that is he is able to handle the terminal voltage and thus the state of charge of batteries Correct in the mV range precisely and with little effort.
Durch den Abgriff für die Gegenkopplung des freischwingenden Wandlers vor der Ausgangsinduktivität, verhält sich der Wander wie eine Regelstrecke 1. Ordnung und besitzt daher eine sehr hohe Stabilität gegenüber den Wandlerkonzepten mit Mehrfachgegenkopplung und Abgriff der Istgröße am Ausgang der Filterdrossel.By tapping for the negative feedback of the freely oscillating converter before the output inductance, the wander behaves like a controlled system 1 . Order and therefore has a very high stability compared to the converter concepts with multiple negative feedback and tapping the actual size at the output of the filter choke.
Der Integrator läßt sich mit einem zusätzlichen Kondensator und Widerstand für eine Rauschformung erweitern, die den Störpegel des Wandlers auf einfacher auszufilternde höhere Frequenzen verschiebt.The integrator can be used with an additional capacitor and resistor extend a noise shaping that simplifies the converter's noise level higher frequencies to be filtered off.
Die Schaltung des Wandlers ist ausführlich in der Literatur beschrieben und auch
praktisch erprobt:
The circuit of the converter is described in detail in the literature and also tried and tested in practice:
- 1. Heinrich Kümmeke; Steuerbarer Oszillator für zahlreiche praktische Anwendungen; ELEKTRONIK 1980, Heft 11. Heinrich Kümmeke; Controllable oscillator for numerous practical applications; ELECTRONICS 1980 , Issue 1
- 2. Klaus Gruppenbacher; Linearer Schaltverstärker hoher Leistung, Studienarbeit St 1773 ÜT, TH Darmstadt 1980 2. Klaus Gruppenbacher; Linear switching amplifier high performance, student research project St 1773 ÜT, TH Darmstadt 1980
- 3. Herbert Sax; Schalten statt Heizen, HiFi-Audio-Endstufe mit Pulsweitenmodulation; ELEKTRONIK 1988, Heft 233. Herbert Sax; Switching instead of heating, HiFi audio power amplifier with pulse width modulation; ELECTRONICS 1988 , Issue 23
- 4. Michael König; Schaltregler für Wechselspannungen; ELEKTRONIK 1988, Heft 234. Michael König; Switching regulators for AC voltages; ELECTRONICS 1988 , Issue 23
Der DC/DC-Wandler kann auch als Zwei/Vierquadranten-Cuk-Konverter entsprechend Bild 4c aufgebaut werden. Der Wandler ist in US-Patent Nr. 4186437, US 4184197. 3716826 und 3923311.1 ausführlich beschrieben und ist besonders unter EMV-Aspekten für die Anwendung geeignet.The DC / DC converter can also be constructed as a two / four quadrant Cuk converter as shown in Figure 4c. The transducer is described in detail in US Patent Nos. 4186437, 4184197, 3716826 and 3923311.1 and is particularly suitable for use from an EMC point of view.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19952334A DE19952334C2 (en) | 1999-10-29 | 1999-10-29 | Starting aid for motor vehicles with high vehicle electrical system voltage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19952334A DE19952334C2 (en) | 1999-10-29 | 1999-10-29 | Starting aid for motor vehicles with high vehicle electrical system voltage |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19952334A1 true DE19952334A1 (en) | 2001-05-31 |
DE19952334C2 DE19952334C2 (en) | 2003-07-17 |
Family
ID=7927414
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19952334A Expired - Fee Related DE19952334C2 (en) | 1999-10-29 | 1999-10-29 | Starting aid for motor vehicles with high vehicle electrical system voltage |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19952334C2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1562252A1 (en) * | 2004-02-05 | 2005-08-10 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Power supply system |
DE102009002279A1 (en) * | 2009-04-08 | 2010-10-14 | Robert Bosch Gmbh | Electricity supply arrangement for e.g. passenger car, has network provided with network points, where arrangement provides voltage of x volts at one network point and voltage of addition of x and y volts at other network point |
GB2495540A (en) * | 2011-10-14 | 2013-04-17 | Graham Michael North | Split power supply for a brushless motor controller |
CN108791134A (en) * | 2017-05-04 | 2018-11-13 | 沃尔沃汽车公司 | Battery balance method |
EP3401150B1 (en) * | 2017-05-04 | 2022-04-06 | Volvo Car Corporation | Dual voltage unit for a vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018132203A1 (en) | 2018-12-14 | 2020-06-18 | Avl Software And Functions Gmbh | Onboard power supply device, motor vehicle and method for checking an onboard power supply voltage |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4184197A (en) * | 1977-09-28 | 1980-01-15 | California Institute Of Technology | DC-to-DC switching converter |
US4186437A (en) * | 1978-05-03 | 1980-01-29 | California Institute Of Technology | Push-pull switching power amplifier |
DE3923311A1 (en) * | 1989-07-14 | 1991-01-24 | Datron Electronic Gmbh | Electronic converter for DC=DC or AC-AC working - has double quadrant converter and push-pull electronic switches |
DE3716826C2 (en) * | 1987-05-20 | 1991-10-24 | Datron-Electronic Gmbh, 6109 Muehltal, De | |
DE19501925A1 (en) * | 1995-01-23 | 1996-08-08 | Dietrich Gebhard | Electrical circuit connecting trailer lamps with towing vehicle lamps |
DE19649392C2 (en) * | 1996-11-29 | 1999-03-04 | Siegfried Nowak | Vehicle voltage maintenance system "SES-1" |
-
1999
- 1999-10-29 DE DE19952334A patent/DE19952334C2/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4184197A (en) * | 1977-09-28 | 1980-01-15 | California Institute Of Technology | DC-to-DC switching converter |
US4186437A (en) * | 1978-05-03 | 1980-01-29 | California Institute Of Technology | Push-pull switching power amplifier |
DE3716826C2 (en) * | 1987-05-20 | 1991-10-24 | Datron-Electronic Gmbh, 6109 Muehltal, De | |
DE3923311A1 (en) * | 1989-07-14 | 1991-01-24 | Datron Electronic Gmbh | Electronic converter for DC=DC or AC-AC working - has double quadrant converter and push-pull electronic switches |
DE19501925A1 (en) * | 1995-01-23 | 1996-08-08 | Dietrich Gebhard | Electrical circuit connecting trailer lamps with towing vehicle lamps |
DE19649392C2 (en) * | 1996-11-29 | 1999-03-04 | Siegfried Nowak | Vehicle voltage maintenance system "SES-1" |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1562252A1 (en) * | 2004-02-05 | 2005-08-10 | Ford Global Technologies, LLC, A subsidary of Ford Motor Company | Power supply system |
US7365516B2 (en) | 2004-02-05 | 2008-04-29 | Ford Global Technologies, Llc | Multi-voltage power supply system and method for operating same |
DE102009002279A1 (en) * | 2009-04-08 | 2010-10-14 | Robert Bosch Gmbh | Electricity supply arrangement for e.g. passenger car, has network provided with network points, where arrangement provides voltage of x volts at one network point and voltage of addition of x and y volts at other network point |
GB2495540A (en) * | 2011-10-14 | 2013-04-17 | Graham Michael North | Split power supply for a brushless motor controller |
CN108791134A (en) * | 2017-05-04 | 2018-11-13 | 沃尔沃汽车公司 | Battery balance method |
US11095147B2 (en) | 2017-05-04 | 2021-08-17 | Volvo Car Corporation | Voltage supply unit and method for regulating energy states of a battery |
CN108791134B (en) * | 2017-05-04 | 2022-01-04 | 沃尔沃汽车公司 | Battery balancing method |
EP3401150B1 (en) * | 2017-05-04 | 2022-04-06 | Volvo Car Corporation | Dual voltage unit for a vehicle |
EP3398818B1 (en) * | 2017-05-04 | 2022-07-06 | Volvo Car Corporation | Voltage supply unit, battery balancing method |
Also Published As
Publication number | Publication date |
---|---|
DE19952334C2 (en) | 2003-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69417385T2 (en) | Method and device for charge balancing of units | |
DE102017009352A1 (en) | Energy coupler for the electrical coupling of electrical on-board networks and method for the electrical coupling of electrical on-board networks | |
WO1999041816A1 (en) | Device and method for controlled parallel operation of direct current converters | |
DE102010009260A1 (en) | Device for supplying onboard network with electrical power from electrical memory, has memory elements whose load is separated to adjust loading conditions of memory and supply onboard network with electrical power | |
WO2017202537A1 (en) | Motor vehicle on-board system having at least two energy stores, method for operating a motor vehicle on-board system; and means for the implementation thereof | |
DE102019212475A1 (en) | Battery system for a motor vehicle, method for operating a battery system and motor vehicle | |
DE102012009219A1 (en) | Battery module for electrical power system in motor vehicle, has primary and secondary battery cells whose positive pole and negative pole are switched to respective inputs of switching elements through corresponding shift elements | |
DE102008051077A1 (en) | Power generation control device for a vehicle | |
DE19952334A1 (en) | Starting assistance method for motor vehicle with high electrical system voltage involves arrangement consisting of e.g. three identical batteries in series and symmetrical DC/DC converter | |
DE102015016651A1 (en) | Charging device for a motor vehicle and method for charging a battery | |
DE29919099U1 (en) | Device for starting aid and a starting aid connection in motor vehicles with high electrical system voltage, e.g. 42/14 V vehicle electrical system, using a symmetrical clocked DC / DC converter | |
WO2018137943A1 (en) | Battery unit and method for operating a battery unit | |
DE102022116958A1 (en) | Drive system with bidirectional DC-DC converter | |
DE102020207857A1 (en) | High-voltage electrical system of a vehicle and method for producing such a high-voltage electrical system | |
DE102019125293A1 (en) | DC voltage conversion in an on-board network | |
DE102019117790A1 (en) | Process and bidirectional DC voltage converter for precharging a charging cable | |
WO2020254329A1 (en) | Circuit assembly for an electric overhead line vehicle with a battery, and method for stabilizing a direct current of a high-voltage dc intermediate circuit in such a motor vehicle | |
EP1470628B1 (en) | Circuit arrangement for momentarily maintaining an internal operating direct current voltage in the event of an interruption in the vehicle electrical system power supply voltage | |
DE102018207189A1 (en) | Device and method for charging an electrical energy store | |
EP1034611A1 (en) | Constant current transformer | |
DE102009023108A1 (en) | Voltage stabilization module for attachment at battery power distributor in motor vehicle, has inlet connection and derivative connection provided for connecting carrier device with voltage supply and electrical consumer, respectively | |
DE102007050620A1 (en) | Switching arrangement for operating electrical load, comprises controlled switching element for selective connection of operating potential with connection of load, where power supply system provides supply voltage | |
WO2019166592A1 (en) | Charging system | |
EP3053257B1 (en) | Dc-dc converter and method for controlling a dc-dc converter | |
DE102018002725A1 (en) | Energy coupler for coupling two electrical systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: REICHARD, RUDOLF, 64853 OTZBERG, DE |
|
8304 | Grant after examination procedure | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140501 |