WO2012131202A1 - Current-reversible voltage regulating device and an electrical architecture intended to be fitted to an automotive vehicle comprising such a device - Google Patents

Current-reversible voltage regulating device and an electrical architecture intended to be fitted to an automotive vehicle comprising such a device Download PDF

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Publication number
WO2012131202A1
WO2012131202A1 PCT/FR2012/050381 FR2012050381W WO2012131202A1 WO 2012131202 A1 WO2012131202 A1 WO 2012131202A1 FR 2012050381 W FR2012050381 W FR 2012050381W WO 2012131202 A1 WO2012131202 A1 WO 2012131202A1
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WO
WIPO (PCT)
Prior art keywords
switch
electronic switch
branch
voltage
electrical
Prior art date
Application number
PCT/FR2012/050381
Other languages
French (fr)
Inventor
Stephane Carubelli
Erwan Monnier
Bernard Boucly
Original Assignee
Peugeot Citroen Automobiles Sa
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Filing date
Publication date
Application filed by Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2012131202A1 publication Critical patent/WO2012131202A1/en

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Classifications

    • 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
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
    • H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
    • 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
    • H02J1/08—Three-wire systems; Systems having more than three wires
    • H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
    • 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
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1438—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in combination with power supplies for loads other than batteries
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac 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
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac 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 with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1582—Buck-boost converters
    • 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
    • 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

Definitions

  • the present invention relates to an electronic device more particularly a voltage regulation device, reversible current and an electrical architecture for equipping a motor vehicle comprising such a device.
  • the electrical equipment equipping the motor vehicles is more and more numerous. Examples include power steering devices or air conditioners. Most of these devices consume a large electrical current for short periods of time. It has therefore been necessary to add to the conventional 12-volt battery one or more additional sources of electrical energy (s), in order to be able to provide the requested electrical power and to avoid a voltage drop on the on-board network to which the various electrical consumers of the vehicle are connected.
  • power steering devices or air conditioners Most of these devices consume a large electrical current for short periods of time. It has therefore been necessary to add to the conventional 12-volt battery one or more additional sources of electrical energy (s), in order to be able to provide the requested electrical power and to avoid a voltage drop on the on-board network to which the various electrical consumers of the vehicle are connected.
  • a conventional solution is to use as a supplementary energy source a second battery or one or more capacitances of significant value. These abilities are usually called super-abilities and are referred to as Ucap. These super-capacitors are generally associated with converters of the DC / DC type in order to adjust the voltage they supply to the supply voltage of the electrical equipment they supply.
  • DMT voltage-holding device
  • document FR2945996 discloses a power supply system for a motor vehicle with a heat engine.
  • the power system comprises an on-board network to which electrical consumers are connected, means for starting / restarting the engine, a battery supplying the on-board electrical system and the means of start / restart and a DMT voltage maintaining device, the on-board network being connected to the battery via the DMT device.
  • the configuration of the DMT can be carried out according to two different technologies: According to a first technology the DMT comprises an input and an output, two branches connected in parallel between the input and the output of the DMT and each comprising a switching device.
  • the DMT further includes super-capacitors as an additional source of energy on one of the branches. The additional power source is called upon when the engine restarts to maintain the onboard network voltage.
  • the super-capacitors are replaced by a current converter.
  • these DMT structures do not ensure optimum energy efficiency during the various phases of the vehicle life for example a restart, energy recovery or maintenance of an electrical service.
  • the object of the invention is to propose a voltage regulation device that allows optimum energy efficiency during the various phases of vehicle life.
  • Another object of the invention is to provide a compact voltage regulation device, electronic and economic dynamics.
  • the invention thus relates to a current reversible voltage regulation device, comprising a voltage booster, a control unit of said device, characterized in that it comprises an input terminal, an output terminal, a first branch and a second branch connected in parallel between the input terminal and the output terminal, a first electronic switch with forced switching and a second electronic switch with forced commutation arranged in series on the first branch, a third electronic switch with forced switching and a fourth forcibly switched electronic switch arranged in series on the second branch, the voltage booster being connected from the portion of the first branch between the first and second forced switching electronic switch to the portion of the second branch included between the third and fourth switch electronic switches the device further comprising means for controlling the switches and the voltage booster, the control unit being configured to select a predetermined switching mode from among a set of possible switching modes of the device and implement said predetermined switching mode through the control means.
  • the device comprises a plurality of voltage boosters arranged electrically in parallel.
  • the first, second, third and fourth forced switching switches are MOSFETs.
  • the voltage booster comprises an inductance electrically connected in series with a first electronic switch, a second electronic switch respectively electrically connected between the ground and a bypass point located between the inductor and the first electronic switch, the elevator. voltage being connected on one side to the part of the first branch between the first switch and the second switch with the first electronic switch and on the other side to the portion of the second branch between the third switch and the fourth switch with the inductor.
  • the second electronic switch is a MOSFET forced switching switch.
  • the first electronic switch is a MOSFET forced switch.
  • the device further comprises first means for acquiring and processing electrical information internal to said device.
  • the device can use this internal electrical information to guide its voltage regulation strategy.
  • the device further comprises second means for acquiring information external to said device.
  • the device can use this additional electrical information to expand its voltage regulation strategy.
  • the device further comprises means for determining and transmitting a diagnostic signal.
  • the subject of the invention is also an electrical architecture intended to equip a motor vehicle, the electrical architecture comprising an on-board network, a DC generator, means for storing electrical energy, means for starting the motor vehicle, and comprises a current-reversible voltage regulation device of the invention connected in the electrical architecture between a first electrical line comprising the electrical energy storage means, and a second electrical line comprising the alternator, the first branch being electrically connected to the input terminal and the second branch being electrically connected to the output terminal of the device, the first power line being connected in parallel to a third power line comprising the starting means, the second power line being connected to parallel to a fourth power line including the gen DC generator.
  • FIG. 1 is a schematic representation of an electrical vehicle architecture comprising a current-reversing voltage regulating device of the invention.
  • Figures 2 to 5 show schematically an electrical vehicle architecture comprising the current reversible voltage control device of the invention according to different possible switching modes associated with specific vehicle life situations.
  • FIG. 1 shows an example of a vehicle electrical architecture comprising a battery 1, for example an electrochemical battery.
  • a so-called 12V battery is an example of electrical energy storage means in an electric vehicle architecture.
  • the electrical architecture also comprises starting means such as a starter 3, an alternator 2 and an edge network 4 on which electrical consumers (not shown) are connected.
  • the alternator 2, which represents a preferred example of a DC electric generator, can be either a conventional alternator providing a constant voltage or an alternator whose output voltage can be controlled or alternatively a reversible alternator.
  • the electrical architecture shown in FIG. 1 comprises a voltage reversing device 5, reversible in current, according to the invention.
  • the device 5 comprises an input terminal E and an output terminal S.
  • the device 5 is connected in the electrical architecture between a first electrical line b1 comprising the battery 1, said first electrical line b1 being connected to a mass M, and a second electrical branch b2 including the alternator 2, said second electrical line b2 being also connected to the ground M.
  • the first branch b1 of the electrical architecture comprising the battery 1 is electrically connected to the input terminal E and the second branch b2 of the electrical architecture comprising the alternator 2 is electrically connected to the output terminal S.
  • the battery 1 is connected to a third electrical line b3 comprising the starter 3, said third electrical line b3 being connected to the ground M.
  • the alternator 2 is connected to a fourth electrical line b4 comprising the edge network 4, said fourth line being connected to the ground M.
  • the current reversible voltage regulator device 5 of the invention utilizes a voltage booster type structure and is configured to allow a reversal of the direction of the current flowing through said device 5.
  • the device 5 can transfer power to the device. energy from battery 1 to alternator 2 or transfer energy from alternator 2 to battery 1.
  • the device 5 can also decouple these two organs if necessary.
  • the device 5 comprises a first branch b51 and a second branch b52, connected in parallel to the input terminal E at a first node N1 and to the output terminal S at a second node N2. .
  • a first forced switching electronic switch K1 and a second forced switching electronic switch K2 are arranged in series on the first branch b51.
  • a third forced switching electronic switch K3 and a fourth forced switching electronic switch K4 are arranged in series on the second branch B-52.
  • Forced switching electronic switch means a switch whose opening and closing electrically is controlled electronically by control means.
  • the device 5 also comprises at least one voltage booster further designated by those skilled in the art by the term "phase" connecting the part of the first branch b51 between the first forced switching electronic switch K1 and the second switching electronic switch. forcing K2 to the part of the second branch b52 between the third forced switching electronic switch K3 and the fourth forced switching electronic switch K4.
  • Figure 1 shows a device 5 comprising three phases, P1, P2, P3.
  • Each of the phases P1, P2, P3 respectively comprises an inductance L1, L2, L3 electrically connected in series with a first electronic switch X1, X2, X3.
  • the first electronic switch X1, X2, X3 may be of natural switching such as a diode.
  • the first switch X1, X2, X3 can also be forced switching such as a MOSFET.
  • the advantage of the MOSFET-type forced switching switch on the diode is that it makes it possible to limit the energy losses during operation of the device 5.
  • the MOSFET is then controlled so as to reproduce the natural operation of a diode.
  • Each of the phases P1, P2, P3 further comprises a second electronic switch ⁇ , X'2, X'3 respectively electrically connected between the ground M and a bypass point located between the inductance L1, L2, L3 and the first switch X1, X2, X3.
  • Each of the phases P1, P2, P3 is respectively connected in parallel on one side to the part of the first branch b51 between the first switch K1 and the second switch K2 with the first electronic switch X1, X2, X3 and the other side to the part of the second branch b52 between the third switch K3 and the fourth switch K4 with the inductance L1, L2, L3.
  • the voltage reversing device 5, reversible current may comprise a first filter capacitor C1 electrically connected between the output S and the mass M whose function is to ensure the stabilization of the output voltage S.
  • a second filter capacitor 02 electrically connected between the input terminal E output and the mass M whose function is to ensure the stabilization of the input voltage E.
  • a current-reversing voltage regulator device 5 which, for example, uses three inductances for three phases P1, P2, P3, and 10 MOSFET. It can also be envisaged to increase the number of phases, for example, 4 or 8, 10 or more, depending on the desired electrical power.
  • This arrangement of the electronic components forming the device 5 makes it possible to produce a current-reversing voltage regulator device 5 with a reduced number of components. Indeed, in the embodiment shown in FIG. 1, we can total 3 inductances and 10 MOSFETs. In the case of a device comprising 8 phases we total 8 inductances and 20 MOSFETs.
  • the forced-switching electronic switches K1, K2, K3, K4 are advantageously common to the operation of all the phases P1, P2, etc.
  • the device 5 of the invention further comprises a control unit 6 comprising control means 7 switches K1, K2, K3, K4, first electronic switches X1, X2, X3 when they are MOSFETs, and second electronic switches ⁇ , X'2, X'3 of each of the phases.
  • the control unit 6 of the device 5 also comprises first means for acquiring and processing measurements of electrical information internal to the device 5. These internal electrical information are, for example, voltage and / or current measurements taken from the device 5 such as the voltages at the input terminals E or output S, the currents flowing through the switches K1, K2, K3, K4.
  • the control unit 6 of the device 5 may furthermore comprise second means for acquiring information external to the device 5. This external information is, for example, the vehicle restart or deceleration information.
  • the control unit 6 is configured to determine, according to the internal information and if necessary external information, a predefined switching mode of the device 5 among a set of possible switching modes and to act by via the control means on the open or closed state of the switches and switches.
  • the control unit 6 may further comprise means for determining and transmitting a diagnostic signal.
  • the control unit 6 is also configured to determine, according to the internal and / or external information, a diagnostic signal (for example a detection of failure or malfunction of the device 5). This signal can be sent to a motor control unit of the vehicle.
  • FIGS. 2 to 5 now show all of the various possible switching modes of the device 5. These different switching modes can be associated with vehicle life situations, the control unit 6 being configured to choose in situations of Vehicle life detected the switching mode and drive the device 5 appropriately. For the sake of simplification of Figures 2 to 5, only a phase P1 of the device is shown.
  • Figure 2 shows a first mode of switching switches and switches.
  • the first forced switching electronic switch K1 and the fourth forced switching electronic switch K4 are open while the second forced switching electronic switch K2 and the third forced switching electronic switch K3 are closed.
  • the first electronic switch X1 and the second switch ⁇ are alternately opened and closed according to a high-frequency cutting so that the phase operates as a voltage booster of the output terminal S with respect to the input terminal E, in other words by voltage booster of the power line b4 comprising the edge network 4 with respect to the power line b1 comprising the battery 1.
  • the current, I, passing through the device 5 flows in the direction, indicated by the arrow Fi, from the input terminal E to the output terminal S.
  • This first switching mode can be implemented during a vehicle start operation.
  • the battery 1 supplies the starter 3. Due to the intense current draw by the starter 3 during startup, the voltage across the battery 1 is lowered by nominal voltage, for example 12.5 V at a lower voltage, for example less than 10V, which is then not compatible with the correct operation of the electrical consumers of the on-board network 4, this voltage drop of the on-board network is then compensated by activating the device 5 according to this first switching mode. The voltage maintaining device 5 then raises the voltage of the output terminal S with respect to the input terminal E so as to allow the correct operation of the electrical consumers of said edge network 4.
  • This first mode of switching can also be implemented rolling vehicle during a situation called “sustained spinning", which corresponds to a situation where due to a battery discharge 1, the voltage across the battery 1 s it lowers to a voltage value which is not compatible with the correct operation of the electrical consumers of the on-board network 4.
  • This voltage drop of the on-board electrical system is compensated by the activation of the device 5 according to this first switching mode.
  • the voltage maintaining device 5 then raises the voltage of the output terminal S with respect to the input terminal, and therefore that of the edge network 4 so as to allow the correct operation of the electrical consumers of said edge network 4.
  • FIG. 3 shows a second switching mode in which the four forced switching electronic switches K1, K2, K3, K4 are open.
  • the second switch ⁇ is open.
  • the first electronic switch X1 can be open or closed.
  • This second mode of switching can be implemented rolling vehicle, during a situation known as "voltage balance" or during a prolonged parking phase.
  • the part of the electrical architecture comprising the battery 1 and the starter 3 is electrically cut off from the part of the electrical architecture comprising the alternator 2 and the edge network 4.
  • the alternator 2 provides power 4.
  • This phase is advantageous in order to keep the state of charge of the battery in a stable state, during taxi or parking of the vehicle.
  • FIG. 4 shows a third switching mode in which the first forced switching electronic switch K1 and the fourth forced switching electronic switch K4 are closed while the second forced switching electronic switch K2 and the third forced switching electronic switch K3 are open.
  • the first electronic switch X1 and the second switch ⁇ are alternately open and closed according to a high-frequency cutting so that the phase operates as a voltage booster of the input terminal E with respect to the output terminal S , in other words voltage booster of the power line b1 ( Figure 1) comprising the battery 1 with respect to the power line b4 comprising the edge network 4.
  • the current, I passing through the device 5 flows in the direction, indicated by the arrow Fi, from the output terminal S to the input terminal E.
  • This third switching mode can be implemented when the vehicle is traveling and when the control unit 6 decides to operate a forced recharge of the battery.
  • the on-board network 4 is sufficiently supplied with voltage, for example at a voltage of between 12.5V and 13.3V, to allow the electrical consumers of said onboard network to function properly
  • the device 5 then raises the voltage of the input terminal E with respect to the output terminal S. More specifically, the voltage across the battery 1 is raised to a voltage value, for example example of 16V, higher than its nominal voltage, allowing the forced recharge of the battery 1 and thus the energy storage recovered in electrical form.
  • This third mode of switching can also be implemented rolling vehicle, in a phase of energy recovery, in other words a phase of life of the vehicle for which a recovery of energy by charging the battery 1 is interesting for the energy balance of the vehicle.
  • An example of a recovery phase is a so-called decelerating phase by lifting the foot, that is to say by releasing the accelerator pedal of the vehicle.
  • the control unit 6 decides to operate a forced recharge of the battery 1 by activating the device 5 following this third switching mode which then raises the voltage of the input terminal E with respect to the output terminal S.
  • FIG. 5 shows a fourth switching mode in which the first forced switching electronic switch K1 and the second forced switching electronic switch K2 are closed while the third forced switching electronic switch K3 and the fourth forced switching electronic switch K4 are open.
  • the second switch ⁇ is open.
  • the first electronic switch X1 is open if it is a MOSFET or prevents naturally the passage of the current if it is a diode.
  • the input terminal E is thus directly electrically connected to the output terminal by the first branch (FIG. 1) and thus forming a bypass or shunt.
  • the part of the electrical architecture comprising the battery 1 and the starter 2 is electrically connected to the part of the electrical architecture comprising the alternator 3 and the edge network 4 by the first branch b51 between the first forced switching electronic switch K1 and second electronic switching switch K2.
  • the alternator 3 and the battery 1 can together supply the power supply of the on-board network 4.
  • This fourth switching mode can be implemented rolling vehicle during a situation of sudden current draw in the on-board network 4, due to the ignition of an electrical consumer of the on-board network 4. This sudden call current in this situation, the alternator 3 is in operation and this fourth switching mode therefore allows a joint power supply of the edge network 4 by the alternator 3 and the battery 1.
  • This fourth mode of switching can also be implemented rolling vehicle during a situation called “spinning not supported".
  • the onboard network 4 consumes little energy and energy is drawn preferably from the battery 1.
  • This fourth switching mode can still be implemented with the vehicle stationary.
  • the alternator 3 is not in operation and the onboard network is powered via the first branch b51 (FIG. 1) by the battery 1.
  • the voltage reversing device 5 which is reversible in current, thus makes it possible to maintain the voltages between different branches of an electrical architecture to which it is connected or to raise the voltage of a branch of the electrical architecture relative to a voltage. other branch.
  • the device 5 allows, thanks to an electronic structure which mutualizes the use of the electronic switches with forced switching K1 to K4 for the different switching modes, regardless of the number of phases, to allow reversibility in current, to reduce the number of components and therefore the overall cost of the device, the mechanical volume of the same device.
  • This electronic structure improves its dynamics. Indeed, in the case of operation in bypass switching mode, as illustrated by the fourth switching mode in FIG. 5, the current flows in the device between the input terminal E and the output terminal S without going through the inductances L1, L2, L3.

Abstract

The invention relates to a device (5) comprising a voltage upconverter (P1, P2, P3) and a control unit (6), characterized in that it comprises: a first branch (b51) and a second branch (b52) connected in parallel between an input terminal (E) and an output terminal (S); a first switch (K1) and a second switch (K2) placed in the first branch (b51); a third switch (K3) and a fourth switch (K4) placed in the second branch, the voltage upconverter being connected between the part of the first branch located between the first and the second switches and the part of the second branch located between the third and fourth switches; and means (7) for controlling the switches and the voltage upconverter, the control unit (6) being configured to select a preset switching mode and implement said mode. The invention relates to an electrical architecture comprising such a device.

Description

DISPOSITIF DE REGULATION EN TENSION, REVERSIBLE EN COURANT ET UNE ARCHITECTURE ELECTRIQUE DESTINE A EQUIPER UN VEHICULE AUTOMOBILE CURRENT REVERSIBLE VOLTAGE REGULATION DEVICE AND ELECTRICAL ARCHITECTURE FOR EQUIPPING A MOTOR VEHICLE
COMPRENANT UN TEL DISPOSITIF Domaine technique de l'invention COMPRISING SUCH A DEVICE Technical Field of the Invention
La présente invention se rapporte à un dispositif électronique plus particulièrement un dispositif de régulation en tension, réversible en courant et une architecture électrique destiné à équiper un véhicule automobile comprenant un tel dispositif. Arrière-plan technologique  The present invention relates to an electronic device more particularly a voltage regulation device, reversible current and an electrical architecture for equipping a motor vehicle comprising such a device. Technological background
Les équipements électriques équipant les véhicules automobiles sont de plus en plus nombreux. On peut par exemples citer les dispositifs les directions assistées ou encore les climatiseurs. La plupart de ces équipements consomment un courant électrique important pendant de courts instants. Il a donc été nécessaire d'ajouter à la batterie classique de 12 Volts une ou plusieurs sources d'énergie électrique supplémentaire(s), afin d'être capable de fournir la puissance électrique demandée et afin d'éviter une chute de tension électrique sur le réseau de bord sur lequel sont connectés les différents consommateurs électriques du véhicule.  The electrical equipment equipping the motor vehicles is more and more numerous. Examples include power steering devices or air conditioners. Most of these devices consume a large electrical current for short periods of time. It has therefore been necessary to add to the conventional 12-volt battery one or more additional sources of electrical energy (s), in order to be able to provide the requested electrical power and to avoid a voltage drop on the on-board network to which the various electrical consumers of the vehicle are connected.
Une solution classique consiste à utiliser comme source d'énergie supplémentaire une deuxième batterie ou une ou plusieurs capacités de valeur importante. Ces capacités sont habituellement appelées des super-capacités et désignées par le mot Ucap. Ces super- capacités sont généralement associées à des convertisseurs du type DC/DC afin d'ajuster la tension qu'elles fournissent à la tension d'alimentation des équipements électriques qu'elles alimentent. A conventional solution is to use as a supplementary energy source a second battery or one or more capacitances of significant value. These abilities are usually called super-abilities and are referred to as Ucap. These super-capacitors are generally associated with converters of the DC / DC type in order to adjust the voltage they supply to the supply voltage of the electrical equipment they supply.
Certains véhicules commercialisés sont munis d'un dispositif de maintien de tension, connu sous l'abréviation DMT, monté en série ou en parallèle avec la batterie. Le DMT consiste en une source d'énergie additionnelle gérée par son électronique, permettant de faciliter le démarrage et d'éviter les chutes de tension sur le réseau de bord du véhicule. Some commercial vehicles are equipped with a voltage-holding device, known as DMT, which is connected in series or in parallel with the battery. The DMT consists of an additional energy source managed by its electronics, to facilitate start-up and to avoid voltage drops in the vehicle's on-board system.
On connaît par exemple du document FR2945996 un système d'alimentation électrique d'un véhicule à moteur thermique. Le système d'alimentation comporte un réseau de bord auquel sont connectés des consommateurs électriques, des moyens de démarrage/ redémarrage du moteur, une batterie alimentant le réseau de bord et les moyens de démarrage/ redémarrage et un dispositif DMT de maintien de tension, le réseau de bord étant connecté à la batterie par l'intermédiaire du dispositif DMT. La configuration du DMT peut être réalisée selon deux technologies différentes : Selon une première technologie le DMT comprend une entrée et une sortie, deux branches connectées en parallèle entre l'entrée et la sortie du DMT et comprenant chacune un dispositif de commutation. Le DMT comprend en outre des super-capacités comme source d'énergie additionnelle sur une des branches. La source d'énergie additionnelle est sollicitée quand le moteur redémarre pour maintenir la tension de réseau de bord. For example, document FR2945996 discloses a power supply system for a motor vehicle with a heat engine. The power system comprises an on-board network to which electrical consumers are connected, means for starting / restarting the engine, a battery supplying the on-board electrical system and the means of start / restart and a DMT voltage maintaining device, the on-board network being connected to the battery via the DMT device. The configuration of the DMT can be carried out according to two different technologies: According to a first technology the DMT comprises an input and an output, two branches connected in parallel between the input and the output of the DMT and each comprising a switching device. The DMT further includes super-capacitors as an additional source of energy on one of the branches. The additional power source is called upon when the engine restarts to maintain the onboard network voltage.
Selon une seconde technologie, les super-capacités sont remplacées par un convertisseur de courant. Cependant, ces structures de DMT ne permettent pas d'assurer un rendement énergétique optimal durant les différentes phases de vie du véhicule par exemple un redémarrage, une récupération d'énergie ou encore le maintien d'une prestation électrique. Le but de l'invention est de proposer un dispositif de régulation de tension qui permet un rendement énergétique optimal durant les différentes phases de vie du véhicule. According to a second technology, the super-capacitors are replaced by a current converter. However, these DMT structures do not ensure optimum energy efficiency during the various phases of the vehicle life for example a restart, energy recovery or maintenance of an electrical service. The object of the invention is to propose a voltage regulation device that allows optimum energy efficiency during the various phases of vehicle life.
Un autre but de l'invention est de proposer un dispositif de régulation de tension peu encombrant, à la dynamique électronique et économique. Another object of the invention is to provide a compact voltage regulation device, electronic and economic dynamics.
L'invention porte ainsi sur un dispositif de régulation en tension, réversible en courant, comprenant un élévateur de tension, une unité de contrôle dudit dispositif, caractérisé en ce qu'il comprend une borne d'entrée, une borne de sortie, une première branche et une deuxième branche reliées en parallèle entre la borne d'entrée et la borne de sortie, un premier interrupteur électronique à commutation forcée et un second interrupteur électronique à commutation forcée disposés en série sur la première branche, un troisième interrupteur électronique à commutation forcée et un quatrième interrupteur électronique à commutation forcée disposés en série sur la deuxième branche, l'élévateur de tension étant reliée de la partie de la première branche comprise entre le premier et le second interrupteur électronique à commutation forcée à la partie de la deuxième branche comprise entre le troisième et le quatrième interrupteur électronique à commutation forcée , le dispositif comprenant en outre des moyens de commandes des interrupteurs et de l'élévateur de tension, l'unité de contrôle étant configurée pour sélectionner un mode de commutation prédéterminé parmi un ensemble de modes de commutation possibles du dispositif et mettre en œuvre ledit mode de commutation prédéterminé par l'intermédiaire des moyens de commandes. The invention thus relates to a current reversible voltage regulation device, comprising a voltage booster, a control unit of said device, characterized in that it comprises an input terminal, an output terminal, a first branch and a second branch connected in parallel between the input terminal and the output terminal, a first electronic switch with forced switching and a second electronic switch with forced commutation arranged in series on the first branch, a third electronic switch with forced switching and a fourth forcibly switched electronic switch arranged in series on the second branch, the voltage booster being connected from the portion of the first branch between the first and second forced switching electronic switch to the portion of the second branch included between the third and fourth switch electronic switches the device further comprising means for controlling the switches and the voltage booster, the control unit being configured to select a predetermined switching mode from among a set of possible switching modes of the device and implement said predetermined switching mode through the control means.
De préférence, afin d'avoir une puissance électrique disponible plus importante, le dispositif comprend une pluralité d'élévateurs de tension disposés électriquement en parallèle. De préférence encore, les premier, second, troisième et quatrième interrupteurs à commutation forcée sont des MOSFET. Preferably, in order to have a larger available electrical power, the device comprises a plurality of voltage boosters arranged electrically in parallel. More preferably, the first, second, third and fourth forced switching switches are MOSFETs.
De préférence, l'élévateur de tension comprend une inductance reliée électriquement en série avec un premier commutateur électronique, un second commutateur électronique respectivement relié électriquement entre la masse et un point de dérivation situé entre l'inductance et le premier commutateur électronique, l'élévateur de tension étant relié d'un coté à la partie de la première branche comprise entre le premier interrupteur et le second interrupteur avec le premier commutateur électronique et de l'autre coté à la partie de la seconde branche comprise entre le troisième interrupteur et le quatrième interrupteur avec l'inductance. Preferably, the voltage booster comprises an inductance electrically connected in series with a first electronic switch, a second electronic switch respectively electrically connected between the ground and a bypass point located between the inductor and the first electronic switch, the elevator. voltage being connected on one side to the part of the first branch between the first switch and the second switch with the first electronic switch and on the other side to the portion of the second branch between the third switch and the fourth switch with the inductor.
Dans une variante, le second commutateur électronique est un commutateur à commutation forcée MOSFET. Dans une autre variante, le premier commutateur électronique est un commutateur à commutation forcé MOSFET. In a variant, the second electronic switch is a MOSFET forced switching switch. In another variant, the first electronic switch is a MOSFET forced switch.
De préférence, le dispositif comprend en outre des premiers moyens d'acquisition et de traitement d'informations électriques internes au dit dispositif. Ainsi, le dispositif peut utiliser ces informations électriques internes pour orienter sa stratégie de régulation de tension. Preferably, the device further comprises first means for acquiring and processing electrical information internal to said device. Thus, the device can use this internal electrical information to guide its voltage regulation strategy.
De préférence encore, le dispositif comprend en outre plus des seconds moyens d'acquisition d'informations externes au dit dispositif. Ainsi, le dispositif peut utiliser ces informations électriques supplémentaires pour étoffer sa stratégie de régulation de tension. Dans une autre variante, le dispositif comprend en outre des moyens de détermination et d'émission d'un signal de diagnostic. More preferably, the device further comprises second means for acquiring information external to said device. Thus, the device can use this additional electrical information to expand its voltage regulation strategy. In another variant, the device further comprises means for determining and transmitting a diagnostic signal.
L'invention a aussi pour objet une architecture électrique destiné à équiper un véhicule automobile, l'architecture électrique comprenant un réseau de bord, un générateur de courant continu, des moyens de stockage d'énergie électrique, des moyens de démarrage du véhicule automobile, et comprend un dispositif de régulation en tension, réversible en courant de l'invention connecté dans l'architecture électrique entre une première ligne électrique comprenant les moyens de stockage d'énergie électrique, et une seconde ligne électrique comprenant l'alternateur, la première branche étant connectée électriquement à la borne d'entrée et la seconde branche étant connectée électriquement à la borne de sortie du dispositif, la première ligne électrique étant reliée en parallèle à une troisième ligne électrique comprenant les moyens de démarrage, la seconde ligne électrique étant reliée en parallèle à une quatrième ligne électrique comprenant le générateur de courant continu. The subject of the invention is also an electrical architecture intended to equip a motor vehicle, the electrical architecture comprising an on-board network, a DC generator, means for storing electrical energy, means for starting the motor vehicle, and comprises a current-reversible voltage regulation device of the invention connected in the electrical architecture between a first electrical line comprising the electrical energy storage means, and a second electrical line comprising the alternator, the first branch being electrically connected to the input terminal and the second branch being electrically connected to the output terminal of the device, the first power line being connected in parallel to a third power line comprising the starting means, the second power line being connected to parallel to a fourth power line including the gen DC generator.
Brève description des dessins Brief description of the drawings
D'autres particularités et avantages apparaîtront à la lecture de la description ci-après d'un mode particulier de réalisation, non limitatif de l'invention, faite en référence aux figures dans lesquelles :  Other features and advantages will appear on reading the following description of a particular embodiment, not limiting of the invention, with reference to the figures in which:
- La figure 1 est une représentation schématique d'une architecture électrique de véhicule comprenant un dispositif de régulation de tension, réversible en courant, de l'invention. - Les figures 2 à 5 présentent schématiquement une architecture électrique de véhicule comprenant le dispositif de régulation de tension, réversible en courant, de l'invention selon différents modes de commutation possibles associés à des situations de vie de véhicule déterminées. FIG. 1 is a schematic representation of an electrical vehicle architecture comprising a current-reversing voltage regulating device of the invention. - Figures 2 to 5 show schematically an electrical vehicle architecture comprising the current reversible voltage control device of the invention according to different possible switching modes associated with specific vehicle life situations.
Description détaillée detailed description
La figure 1 présente un exemple d'architecture électrique de véhicule comprenant une batterie 1 , par exemple une batterie électrochimique. Une batterie dite de 12V est un exemple de moyens de stockage d'énergie électrique dans une architecture électrique de véhicule. L'architecture électrique comprend aussi des moyens de démarrage tel qu'un démarreur 3, un alternateur 2 et un réseau de bord 4 sur lequel sont connectés des consommateurs électriques (non représentés). L'alternateur 2, qui représente un exemple préféré de générateur électrique de courant continu, peut être indifféremment un alternateur classique fournissant une tension constante ou un alternateur dont la tension de sortie peut être pilotée ou encore un alternateur réversible. FIG. 1 shows an example of a vehicle electrical architecture comprising a battery 1, for example an electrochemical battery. A so-called 12V battery is an example of electrical energy storage means in an electric vehicle architecture. The electrical architecture also comprises starting means such as a starter 3, an alternator 2 and an edge network 4 on which electrical consumers (not shown) are connected. The alternator 2, which represents a preferred example of a DC electric generator, can be either a conventional alternator providing a constant voltage or an alternator whose output voltage can be controlled or alternatively a reversible alternator.
L'architecture électrique présentée en figure 1 comprend un dispositif 5 de régulation de tension, réversible en courant, conforme à l'invention. Selon un mode de réalisation préféré, le dispositif 5 comprend une borne d'entrée E et une borne de sortie S. Le dispositif 5 est connecté dans l'architecture électrique entre une première ligne électrique b1 comprenant la batterie 1 , ladite première ligne électrique b1 étant reliée à une masse M, et une seconde branche électrique b2 comprenant l'alternateur 2, ladite seconde ligne électrique b2 étant aussi reliée à la masse M. La première branche b1 de l'architecture électrique comprenant la batterie 1 est connectée électriquement à la borne d'entrée E et la seconde branche b2 de l'architecture électrique comprenant l'alternateur 2 est connectée électriquement à la borne de sortie S. The electrical architecture shown in FIG. 1 comprises a voltage reversing device 5, reversible in current, according to the invention. According to a preferred embodiment, the device 5 comprises an input terminal E and an output terminal S. The device 5 is connected in the electrical architecture between a first electrical line b1 comprising the battery 1, said first electrical line b1 being connected to a mass M, and a second electrical branch b2 including the alternator 2, said second electrical line b2 being also connected to the ground M. The first branch b1 of the electrical architecture comprising the battery 1 is electrically connected to the input terminal E and the second branch b2 of the electrical architecture comprising the alternator 2 is electrically connected to the output terminal S.
Selon cette architecture encore, la batterie 1 est reliée à une troisième ligne électrique b3 comprenant le démarreur 3, ladite troisième ligne électrique b3 étant reliée à la masse M. According to this architecture again, the battery 1 is connected to a third electrical line b3 comprising the starter 3, said third electrical line b3 being connected to the ground M.
Selon cette architecture encore, l'alternateur 2 est relié à une quatrième ligne électrique b4 comprenant le réseau de bord 4, ladite quatrième ligne étant reliée à la masse M. According to this architecture, the alternator 2 is connected to a fourth electrical line b4 comprising the edge network 4, said fourth line being connected to the ground M.
Le dispositif 5 de régulation de tension, réversible en courant, de l'invention utilise une structure de type élévateur de tension et est configuré pour permettre une inversion du sens du courant traversant ledit dispositif 5. Autrement dit, le dispositif 5 peut transférer de l'énergie de la batterie 1 vers l'alternateur 2 ou transférer de l'énergie de l'alternateur 2 vers la batterie 1 . Le dispositif 5 peut également découpler ces deux organes si nécessaire. The current reversible voltage regulator device 5 of the invention utilizes a voltage booster type structure and is configured to allow a reversal of the direction of the current flowing through said device 5. In other words, the device 5 can transfer power to the device. energy from battery 1 to alternator 2 or transfer energy from alternator 2 to battery 1. The device 5 can also decouple these two organs if necessary.
Plus précisément, le dispositif 5 comprend une première branche b51 et une deuxième branche b52, reliées en parallèle à la borne d'entrée E au niveau d'un premier nœud N1 et à la borne de sortie S au niveau d'un second nœud N2. Un premier interrupteur électronique à commutation forcée K1 et un second interrupteur électronique à commutation forcée K2 sont disposés en série sur la première branche b51 . Un troisième interrupteur électronique à commutation forcée K3 et un quatrième interrupteur électronique à commutation forcée K4 sont disposés en série sur la deuxième branche b52. On entend par interrupteur électronique à commutation forcée, un interrupteur dont l'ouverture et la fermeture électrique est pilotée électroniquement par des moyens de commandes. Le dispositif 5 comprend encore au moins un élévateur de tension encore désigné par l'homme du métier par le terme « phase » reliant la partie de la première branche b51 comprise entre le premier interrupteur électronique à commutation forcée K1 et le second interrupteur électronique à commutation forcée K2 à la partie de la deuxième branche b52 comprise entre le troisième interrupteur électronique à commutation forcée K3 et le quatrième interrupteur électronique à commutation forcée K4. La figure 1 montre un dispositif 5 comprenant trois phases, P1 , P2, P3. More specifically, the device 5 comprises a first branch b51 and a second branch b52, connected in parallel to the input terminal E at a first node N1 and to the output terminal S at a second node N2. . A first forced switching electronic switch K1 and a second forced switching electronic switch K2 are arranged in series on the first branch b51. A third forced switching electronic switch K3 and a fourth forced switching electronic switch K4 are arranged in series on the second branch B-52. Forced switching electronic switch means a switch whose opening and closing electrically is controlled electronically by control means. The device 5 also comprises at least one voltage booster further designated by those skilled in the art by the term "phase" connecting the part of the first branch b51 between the first forced switching electronic switch K1 and the second switching electronic switch. forcing K2 to the part of the second branch b52 between the third forced switching electronic switch K3 and the fourth forced switching electronic switch K4. Figure 1 shows a device 5 comprising three phases, P1, P2, P3.
Chacune des phases P1 , P2, P3 comporte respectivement une inductance L1 , L2, L3 reliée électriquement en série avec un premier commutateur électronique X1 , X2, X3. Each of the phases P1, P2, P3 respectively comprises an inductance L1, L2, L3 electrically connected in series with a first electronic switch X1, X2, X3.
Le premier commutateur électronique X1 , X2, X3 peut être à commutation naturelle tel qu'une diode. Le premier commutateur X1 , X2, X3 peut également être à commutation forcée tel qu'un MOSFET. L'avantage du commutateur à commutation forcée de type MOSFET sur la diode est de permettre de limiter les pertes énergétiques lors du fonctionnement du dispositif 5. Le MOSFET est alors piloté de manière à reproduire le fonctionnement naturel d'une diode. The first electronic switch X1, X2, X3 may be of natural switching such as a diode. The first switch X1, X2, X3 can also be forced switching such as a MOSFET. The advantage of the MOSFET-type forced switching switch on the diode is that it makes it possible to limit the energy losses during operation of the device 5. The MOSFET is then controlled so as to reproduce the natural operation of a diode.
Chacune des phases P1 , P2, P3 comprend de plus un second commutateur électronique ΧΊ , X'2, X'3 respectivement relié électriquement entre la masse M et un point de dérivation situé entre l'inductance L1 , L2, L3 et le premier commutateur électronique X1 , X2, X3. Each of the phases P1, P2, P3 further comprises a second electronic switch ΧΊ, X'2, X'3 respectively electrically connected between the ground M and a bypass point located between the inductance L1, L2, L3 and the first switch X1, X2, X3.
Chacune des phases P1 , P2, P3 est respectivement reliée en parallèle d'un coté à la partie de la première branche b51 comprise entre le premier interrupteur K1 et le second interrupteur K2 avec le premier commutateur électronique X1 , X2, X3 et de l'autre coté à la partie de la seconde branche b52 comprise entre le troisième interrupteur K3 et le quatrième interrupteur K4 avec l'inductance L1 , L2, L3. Each of the phases P1, P2, P3 is respectively connected in parallel on one side to the part of the first branch b51 between the first switch K1 and the second switch K2 with the first electronic switch X1, X2, X3 and the other side to the part of the second branch b52 between the third switch K3 and the fourth switch K4 with the inductance L1, L2, L3.
Par ailleurs, le dispositif 5 de régulation de tension, réversible en courant, peut comprendre un premier condensateur de filtrage C1 relié électriquement entre la sortie S et la masse M dont la fonction est d'assurer la stabilisation de la tension en sortie S. On peut encore prévoir un second condensateur 02 de filtrage relié électriquement entre la borne d'entrée E sortie et la masse M dont la fonction est d'assurer la stabilisation de la tension en entrée E. Furthermore, the voltage reversing device 5, reversible current, may comprise a first filter capacitor C1 electrically connected between the output S and the mass M whose function is to ensure the stabilization of the output voltage S. On can also provide a second filter capacitor 02 electrically connected between the input terminal E output and the mass M whose function is to ensure the stabilization of the input voltage E.
Nous arrivons ainsi, dans la configuration présentée à la figure 1 , à un dispositif 5 de régulation de tension, réversible en courant, conforme à l'invention qui, par exemple, pour trois phases P1 , P2, P3, utilise 3 inductances, et 10 MOSFET. Il peut être également envisagé d'accroître le nombre de phases, par exemple, 4 ou 8, 10 ou plus, en fonction de la puissance électrique désirée. Cet agencement des composants électroniques formant le dispositif 5 permet de réaliser un dispositif 5 de régulation de tension, réversible en courant, avec un nombre réduit de composants. En effet, dans le mode de réalisation présenté en figure 1 , nous pouvons totaliser 3 inductances et 10 MOSFET. Dans le cas d'un dispositif 5 comprenant 8 phases nous totalisons 8 inductances et 20 MOSFET. Ainsi, quelque soit le nombre de phase du dispositif 5, dans cette configuration les interrupteurs électroniques à commutation forcée K1 , K2, K3, K4, sont avantageusement communs au fonctionnement de toutes les phases P1 , P2, etc. Thus, in the configuration shown in FIG. 1, we arrive at a current-reversing voltage regulator device 5 according to the invention which, for example, uses three inductances for three phases P1, P2, P3, and 10 MOSFET. It can also be envisaged to increase the number of phases, for example, 4 or 8, 10 or more, depending on the desired electrical power. This arrangement of the electronic components forming the device 5 makes it possible to produce a current-reversing voltage regulator device 5 with a reduced number of components. Indeed, in the embodiment shown in FIG. 1, we can total 3 inductances and 10 MOSFETs. In the case of a device comprising 8 phases we total 8 inductances and 20 MOSFETs. Thus, whatever the phase number of the device 5, in this configuration the forced-switching electronic switches K1, K2, K3, K4 are advantageously common to the operation of all the phases P1, P2, etc.
Le dispositif 5 de l'invention comprend en outre une unité de contrôle 6 comprenant des moyens de commande 7 des interrupteurs K1 , K2, K3, K4, des premier commutateurs électroniques X1 , X2, X3 quand ceux-ci sont des MOSFET, et des second commutateurs électroniques ΧΊ , X'2, X'3 de chacune des phases. The device 5 of the invention further comprises a control unit 6 comprising control means 7 switches K1, K2, K3, K4, first electronic switches X1, X2, X3 when they are MOSFETs, and second electronic switches ΧΊ, X'2, X'3 of each of the phases.
L'unité de contrôle 6 du dispositif 5 comprend en outre des premiers moyens d'acquisition et de traitement de mesures d'informations électriques internes au dispositif 5. Ces informations électriques internes sont par exemple des mesures de tension et / ou de courant prélevées dans le dispositif 5 telles que les tensions aux bornes d'entrée E ou de sortie S, les courants traversant les interrupteurs K1 , K2, K3, K4. L'unité de contrôle 6 du dispositif 5 peut comprendre de plus des seconds moyens d'acquisition d'informations externes au dispositif 5. Ces informations externes sont par exemple l'information de redémarrage du véhicule ou de décélération. The control unit 6 of the device 5 also comprises first means for acquiring and processing measurements of electrical information internal to the device 5. These internal electrical information are, for example, voltage and / or current measurements taken from the device 5 such as the voltages at the input terminals E or output S, the currents flowing through the switches K1, K2, K3, K4. The control unit 6 of the device 5 may furthermore comprise second means for acquiring information external to the device 5. This external information is, for example, the vehicle restart or deceleration information.
L'unité de contrôle 6 est configurée pour déterminer, en fonction des informations internes et le cas échéant des informations externes, un mode de commutation prédéfini du dispositif 5 parmi un ensemble de mode de commutation possibles et d'agir par l'intermédiaire des moyens de commande sur l'état ouvert ou fermé des interrupteurs et des commutateurs. The control unit 6 is configured to determine, according to the internal information and if necessary external information, a predefined switching mode of the device 5 among a set of possible switching modes and to act by via the control means on the open or closed state of the switches and switches.
L'unité de contrôle 6 peut encore comprendre des moyens de détermination et d'émission d'un signal de diagnostic. Dans ce cas, L'unité de contrôle 6 est aussi configurée pour déterminer, en fonction des informations internes et / ou externes, un signal diagnostic (par exemple une détection de panne ou de dysfonctionnement du dispositif 5). Ce signal peut être émis à destination d'une unité de contrôle moteur du véhicule. Les figures 2 à 5 présentent maintenant l'ensemble des différents modes de commutation possibles du dispositif 5. Ces différents modes de commutation peuvent être associés à des situations de vie du véhicule, l'unité de contrôle 6 étant configuré pour choisir en des situations de vie du véhicule détectées le mode de commutation et piloter le dispositif 5 de manière appropriée. Par soucis de simplification des figures 2 à 5, seule une phase P1 du dispositif est représentée. The control unit 6 may further comprise means for determining and transmitting a diagnostic signal. In this case, the control unit 6 is also configured to determine, according to the internal and / or external information, a diagnostic signal (for example a detection of failure or malfunction of the device 5). This signal can be sent to a motor control unit of the vehicle. FIGS. 2 to 5 now show all of the various possible switching modes of the device 5. These different switching modes can be associated with vehicle life situations, the control unit 6 being configured to choose in situations of Vehicle life detected the switching mode and drive the device 5 appropriately. For the sake of simplification of Figures 2 to 5, only a phase P1 of the device is shown.
La figure 2 présente un premier mode de commutation des interrupteurs et commutateurs. Dans ce premier mode de commutation, le premier interrupteur électronique à commutation forcée K1 et le quatrième interrupteur électronique à commutation forcée K4 sont ouverts tandis que le second interrupteur électronique à commutation forcée K2 et le troisième interrupteur électronique à commutation forcée K3 sont fermés. Figure 2 shows a first mode of switching switches and switches. In this first switching mode, the first forced switching electronic switch K1 and the fourth forced switching electronic switch K4 are open while the second forced switching electronic switch K2 and the third forced switching electronic switch K3 are closed.
Dans chaque phase, le premier commutateur électronique X1 et le second commutateur ΧΊ sont alternativement ouverts et fermés selon un découpage haute fréquence de sorte que la phase fonctionne en élévateur de tension de la borne de sortie S par rapport à la borne d'entrée E, autrement dit en élévateur de tension de la ligne électrique b4 comprenant le réseau de bord 4 par rapport à la ligne électrique b1 comprenant la batterie 1 . Le courant, I, traversant le dispositif 5 circule dans le sens, indiqué par la flèche Fi, de la borne d'entrée E à la borne de sortie S. In each phase, the first electronic switch X1 and the second switch ΧΊ are alternately opened and closed according to a high-frequency cutting so that the phase operates as a voltage booster of the output terminal S with respect to the input terminal E, in other words by voltage booster of the power line b4 comprising the edge network 4 with respect to the power line b1 comprising the battery 1. The current, I, passing through the device 5 flows in the direction, indicated by the arrow Fi, from the input terminal E to the output terminal S.
Ce premier mode de commutation peut être mis en œuvre lors d'une opération de démarrage du véhicule. This first switching mode can be implemented during a vehicle start operation.
En effet, dans cette situation de vie de véhicule, la batterie 1 alimente le démarreur 3. En raison de l'intense appel de courant par le démarreur 3 au cours du démarrage, la tension aux bornes de la batterie 1 s'abaisse de sa tension nominale, par exemple 12,5 V à une tension inférieure, par exemple inférieure à 10V, qui n'est alors pas compatible avec le fonctionnement correct des consommateurs électriques du réseau de bord 4, on compense alors cette chute de tension du réseau de bord en activant le dispositif 5 selon ce premier mode de commutation. Le dispositif 5 de maintien en tension élève alors la tension de la borne de sortie S par rapport à la borne d'entrée E de sorte à permettre le fonctionnement correct des consommateurs électriques dudit réseau de bord 4. Indeed, in this vehicle life situation, the battery 1 supplies the starter 3. Due to the intense current draw by the starter 3 during startup, the voltage across the battery 1 is lowered by nominal voltage, for example 12.5 V at a lower voltage, for example less than 10V, which is then not compatible with the correct operation of the electrical consumers of the on-board network 4, this voltage drop of the on-board network is then compensated by activating the device 5 according to this first switching mode. The voltage maintaining device 5 then raises the voltage of the output terminal S with respect to the input terminal E so as to allow the correct operation of the electrical consumers of said edge network 4.
Ce premier mode de commutation peut aussi être mis en œuvre véhicule roulant, lors d'une situation dite de « filage soutenu », qui correspond à une situation où en raison d'une décharge batterie 1 , la tension aux bornes de la batterie 1 s'abaisse à une valeur de tension qui n'est pas compatible avec le fonctionnement correct des consommateurs électriques du réseau de bord 4. Cette baisse de tension du réseau de bord est compensée par l'activation du dispositif 5 selon ce premier mode de commutation. Le dispositif 5 de maintien en tension élève alors la tension de la borne de sortie S par rapport à la borne d'entrée, et donc celle du réseau de bord 4 de sorte à permettre le fonctionnement correct des consommateurs électriques dudit réseau de bord 4. This first mode of switching can also be implemented rolling vehicle during a situation called "sustained spinning", which corresponds to a situation where due to a battery discharge 1, the voltage across the battery 1 s it lowers to a voltage value which is not compatible with the correct operation of the electrical consumers of the on-board network 4. This voltage drop of the on-board electrical system is compensated by the activation of the device 5 according to this first switching mode. The voltage maintaining device 5 then raises the voltage of the output terminal S with respect to the input terminal, and therefore that of the edge network 4 so as to allow the correct operation of the electrical consumers of said edge network 4.
La figure 3 présente un second mode de commutation dans lequel les quatre interrupteurs électroniques à commutation forcée K1 , K2, K3, K4 sont ouverts. En outre, dans chaque phase, le second commutateur ΧΊ est ouvert. Le premier commutateur électronique X1 peut être ouvert ou fermé. FIG. 3 shows a second switching mode in which the four forced switching electronic switches K1, K2, K3, K4 are open. In addition, in each phase, the second switch ΧΊ is open. The first electronic switch X1 can be open or closed.
Ce second mode de commutation peut être mis en œuvre véhicule roulant, lors d'une situation dite « d'équilibre des tensions » ou lors d'une phase de parking prolongée. Dans cette situation, la partie de l'architecture électrique comprenant la batterie 1 et le démarreur 3 est coupée électriquement de la partie de l'architecture électrique comprenant l'alternateur 2 et le réseau de bord 4. L'alternateur 2 assure l'alimentation électrique du réseau de bord 4. C'est phase est avantageuse afin de garder l'état de charge de la batterie à un état stable, durant le roulage ou le stationnement du véhicule. This second mode of switching can be implemented rolling vehicle, during a situation known as "voltage balance" or during a prolonged parking phase. In this situation, the part of the electrical architecture comprising the battery 1 and the starter 3 is electrically cut off from the part of the electrical architecture comprising the alternator 2 and the edge network 4. The alternator 2 provides power 4. This phase is advantageous in order to keep the state of charge of the battery in a stable state, during taxi or parking of the vehicle.
La figure 4 présente un troisième mode de commutation dans lequel le premier interrupteur électronique à commutation forcée K1 et le quatrième interrupteur électronique à commutation forcée K4 sont fermés tandis que le second interrupteur électronique à commutation forcée K2 et le troisième interrupteur électronique à commutation forcée K3 sont ouverts. Dans cette phase P1 , le premier commutateur électronique X1 et le second commutateur ΧΊ sont alternativement ouverts et fermés selon un découpage haute fréquence de sorte que la phase fonctionne en élévateur de tension de la borne d'entrée E par rapport à la borne de sortie S, autrement dit en élévateur de tension de la ligne électrique b1 (figure 1 ) comprenant la batterie 1 par rapport à la ligne électrique b4 comprenant le réseau de bord 4. Il en va de même pour les autres phases P2, P3, non représentées. Le courant, I, traversant le dispositif 5 circule dans le sens, indiqué par la flèche Fi, de la borne de sortie S à la borne d'entrée E. Ce troisième mode de commutation peut être mis en œuvre lorsque le véhicule roule et que l'unité de contrôle 6 décide d'opérer une recharge forcée de la batterie. Dans cette situation, alors que le réseau de bord 4 est suffisamment alimenté en tension, par exemple à une tension comprise entre 12,5V et 13,3V, pour permettre un fonctionnement correct des consommateurs électriques dudit réseau de bord, en activant le dispositif 5 selon ce troisième mode de commutation, le dispositif 5 élève alors la tension de la borne d'entrée E par rapport à la borne de sortie S. Plus précisément, la tension aux bornes de la batterie 1 est élevée à une valeur de tension, par exemple de 16V, supérieure à sa tension nominale, permettant la recharge forcée de la batterie 1 et donc le stockage énergie récupérée sous forme électrique. FIG. 4 shows a third switching mode in which the first forced switching electronic switch K1 and the fourth forced switching electronic switch K4 are closed while the second forced switching electronic switch K2 and the third forced switching electronic switch K3 are open. In this phase P1, the first electronic switch X1 and the second switch ΧΊ are alternately open and closed according to a high-frequency cutting so that the phase operates as a voltage booster of the input terminal E with respect to the output terminal S , in other words voltage booster of the power line b1 (Figure 1) comprising the battery 1 with respect to the power line b4 comprising the edge network 4. The same goes for the other phases P2, P3, not shown. The current, I, passing through the device 5 flows in the direction, indicated by the arrow Fi, from the output terminal S to the input terminal E. This third switching mode can be implemented when the vehicle is traveling and when the control unit 6 decides to operate a forced recharge of the battery. In this situation, while the on-board network 4 is sufficiently supplied with voltage, for example at a voltage of between 12.5V and 13.3V, to allow the electrical consumers of said onboard network to function properly, by activating the device 5 according to this third switching mode, the device 5 then raises the voltage of the input terminal E with respect to the output terminal S. More specifically, the voltage across the battery 1 is raised to a voltage value, for example example of 16V, higher than its nominal voltage, allowing the forced recharge of the battery 1 and thus the energy storage recovered in electrical form.
Ce troisième mode de commutation peut aussi être mis en œuvre véhicule roulant, dans une phase de récupération d'énergie, autrement dit une phase de vie du véhicule pour laquelle une récupération d'énergie par recharge de la batterie 1 est intéressante pour le bilan énergétique du véhicule. Un exemple de phase de récupération est une phase de décélération dite par lever de pied, c'est-à-dire par relâchement de la pédale d'accélération du véhicule. Dans ce cas, en cas de détection par l'unité de contrôle 6 d'une phase de décélération par lever de pied, l'unité de contrôle 6 décide d'opérer une recharge forcée de la batterie 1 en activant le dispositif 5 suivant ce troisième mode de commutation qui élève alors la tension de la borne d'entrée E par rapport à la borne de sortie S. This third mode of switching can also be implemented rolling vehicle, in a phase of energy recovery, in other words a phase of life of the vehicle for which a recovery of energy by charging the battery 1 is interesting for the energy balance of the vehicle. An example of a recovery phase is a so-called decelerating phase by lifting the foot, that is to say by releasing the accelerator pedal of the vehicle. In this case, in the event of detection by the control unit 6 of a deceleration phase by lifting of the foot, the control unit 6 decides to operate a forced recharge of the battery 1 by activating the device 5 following this third switching mode which then raises the voltage of the input terminal E with respect to the output terminal S.
La figure 5 présente un quatrième mode de commutation dans lequel le premier interrupteur électronique à commutation forcée K1 et le second interrupteur électronique à commutation forcée K2 sont fermés tandis que le troisième interrupteur électronique à commutation forcée K3 et le quatrième interrupteur électronique à commutation forcée K4 sont ouverts. En outre, dans chaque phase, le second commutateur ΧΊ est ouvert. Le premier commutateur électronique X1 est ouvert s'il s'agit d'un MOSFET ou empêche naturellement le passage du courant s'il s'agit d'une diode. La borne d'entrée E est ainsi directement reliée électriquement à la borne de sortie par la première branche (figure 1 ) et formant ainsi un by-pass ou shunt. Dans cette situation, la partie de l'architecture électrique comprenant la batterie 1 et le démarreur 2 est connecté électriquement à la partie de l'architecture électrique comprenant l'alternateur 3 et le réseau de bord 4 par la première branche b51 comprise entre le premier interrupteur électronique à commutation forcée K1 et le second interrupteur électronique à commutation forcée K2. L'alternateur 3 et la batterie 1 peuvent assurer ensemble l'alimentation électrique du réseau de bord 4. FIG. 5 shows a fourth switching mode in which the first forced switching electronic switch K1 and the second forced switching electronic switch K2 are closed while the third forced switching electronic switch K3 and the fourth forced switching electronic switch K4 are open. In addition, in each phase, the second switch ΧΊ is open. The first electronic switch X1 is open if it is a MOSFET or prevents naturally the passage of the current if it is a diode. The input terminal E is thus directly electrically connected to the output terminal by the first branch (FIG. 1) and thus forming a bypass or shunt. In this situation, the part of the electrical architecture comprising the battery 1 and the starter 2 is electrically connected to the part of the electrical architecture comprising the alternator 3 and the edge network 4 by the first branch b51 between the first forced switching electronic switch K1 and second electronic switching switch K2. The alternator 3 and the battery 1 can together supply the power supply of the on-board network 4.
Ce quatrième mode de commutation peut être mis en œuvre véhicule roulant, lors d'une situation de brusque appel de courant dans le réseau de bord 4, en raison de l'allumage d'un consommateur électrique du réseau de bord 4. Ce brusque appel de courant a pour effet d'abaisser la tension aux bornes du réseau de bord 4. Dans cette situation, l'alternateur 3 est en fonctionnement et ce quatrième mode de commutation permet donc une alimentation conjointe du réseau de bord 4 par l'alternateur 3 et la batterie 1 . This fourth switching mode can be implemented rolling vehicle during a situation of sudden current draw in the on-board network 4, due to the ignition of an electrical consumer of the on-board network 4. This sudden call current in this situation, the alternator 3 is in operation and this fourth switching mode therefore allows a joint power supply of the edge network 4 by the alternator 3 and the battery 1.
Ce quatrième mode de commutation peut aussi être mis en œuvre véhicule roulant, lors d'une situation dite de « filage non soutenu ». Dans cette situation, le réseau de bord 4 consomme peu d'énergie et on puise de l'énergie préférablement de l'énergie dans la batterie 1 . This fourth mode of switching can also be implemented rolling vehicle during a situation called "spinning not supported". In this situation, the onboard network 4 consumes little energy and energy is drawn preferably from the battery 1.
Ce quatrième mode de commutation peut encore être mis en œuvre véhicule à l'arrêt. Dans ce cas, l'alternateur 3 n'est pas en fonctionnement et le réseau de bord est alimenté via la première branche b51 (figure 1 ) par la batterie 1 . This fourth switching mode can still be implemented with the vehicle stationary. In this case, the alternator 3 is not in operation and the onboard network is powered via the first branch b51 (FIG. 1) by the battery 1.
Le dispositif 5 de régulation de tension, réversible en courant, permet donc de maintenir les tensions entre différentes branches d'une architecture électrique à laquelle il est relié ou encore d'élever la tension d'une branche de l'architecture électrique relativement à une autre branche. Le dispositif 5 permet grâce à une structure électronique qui mutualise l'usage des interrupteurs électronique à commutation forcée K1 à K4 pour les différents modes de commutation, indépendamment du nombre de phase, de permettre la réversibilité en courant, de réduire le nombre de composant et donc le coût global du dispositif, le volume mécanique de ce même dispositif. Cette structure électronique permet d'améliorer sa dynamique. En effet, dans le cas d'un fonctionnement en mode de commutation en by-pass, comme illustré par le quatrième mode de commutation en figure 5, le courant circule dans le dispositif entre la borne d'entrée E et la borne de sortie S sans passer par les inductances L1 , L2, L3. The voltage reversing device 5, which is reversible in current, thus makes it possible to maintain the voltages between different branches of an electrical architecture to which it is connected or to raise the voltage of a branch of the electrical architecture relative to a voltage. other branch. The device 5 allows, thanks to an electronic structure which mutualizes the use of the electronic switches with forced switching K1 to K4 for the different switching modes, regardless of the number of phases, to allow reversibility in current, to reduce the number of components and therefore the overall cost of the device, the mechanical volume of the same device. This electronic structure improves its dynamics. Indeed, in the case of operation in bypass switching mode, as illustrated by the fourth switching mode in FIG. 5, the current flows in the device between the input terminal E and the output terminal S without going through the inductances L1, L2, L3.

Claims

Revendications claims
1 . Dispositif (5) de régulation en tension, réversible en courant, comprenant un élévateur de tension (P1 , P2, P3), une unité de contrôle (6) dudit dispositif (5), caractérisé en ce qu'il comprend une borne d'entrée (E), une borne de sortie (S), une première branche (b51 ) et une deuxième branche (b52) reliées en parallèle entre la borne d'entrée (E) et la borne de sortie (S), un premier interrupteur électronique à commutation forcée (K1 ) et un second interrupteur électronique à commutation forcée (K2) disposés en série sur la première branche (b51 ), un troisième interrupteur électronique à commutation forcée (K3) et un quatrième interrupteur électronique à commutation forcée (K4) disposés en série sur la deuxième branche (b52), l'élévateur de tension (P1 , P2, P3) étant reliée de la partie de la première branche (b51 ) comprise entre le premier et le second interrupteur électronique à commutation forcée (K1 , K2) à la partie de la deuxième branche (b52) comprise entre le troisième et le quatrième interrupteur électronique à commutation forcée (K3, K4), le dispositif (5) comprenant en outre des moyens de commandes (7) des interrupteurs et de l'élévateur de tension (P1 , P2, P3), l'unité de contrôle (6) étant configurée pour sélectionner un mode de commutation prédéterminé parmi un ensemble de modes de commutation possibles du dispositif (5) et mettre en œuvre ledit mode de commutation prédéterminé par l'intermédiaire des moyens de commandes (7). 1. A device (5) for voltage regulation, reversible in current, comprising a voltage booster (P1, P2, P3), a control unit (6) of said device (5), characterized in that it comprises a terminal of input (E), an output terminal (S), a first branch (b51) and a second branch (b52) connected in parallel between the input terminal (E) and the output terminal (S), a first switch forced switching electronics (K1) and a second forcing electronic switch (K2) arranged in series on the first leg (b51), a third forcing electronic switch (K3) and a fourth forcing electronic switch (K4) arranged in series on the second branch (b52), the voltage booster (P1, P2, P3) being connected to the part of the first branch (b51) between the first and second forced switching electronic switch (K1, K2) to the part of the second b ranche (b52) between the third and fourth forced switching electronic switch (K3, K4), the device (5) further comprising control means (7) of the switches and the voltage booster (P1, P2 , P3), the control unit (6) being configured to select a predetermined switching mode from among a set of possible switching modes of the device (5) and implement said predetermined switching mode through the means of orders (7).
2. Dispositif (5) selon la revendication 1 , caractérisé en ce qu'il comprend une pluralité d'élévateurs de tension (P1 , P2, P3) disposés électriquement en parallèle. 2. Device (5) according to claim 1, characterized in that it comprises a plurality of voltage boosters (P1, P2, P3) arranged electrically in parallel.
3. Dispositif (5), selon la revendication 1 ou la revendication 2, caractérisé en ce que les premier, second, troisième et quatrième interrupteurs à commutation forcée (K1 , K2, K3, K4) sont des MOSFET. 3. Device (5) according to claim 1 or claim 2, characterized in that the first, second, third and fourth switches for forced switching (K1, K2, K3, K4) are MOSFETs.
4. Dispositif (5) selon l'une quelconque des revendications précédentes, caractérisé en de que l'élévateur de tension (P1 , P2, P3) comprend une inductance (L1 , L2, L3) reliée électriquement en série avec un premier commutateur électronique (X1 , X2, X3), un second commutateur électronique (ΧΊ , X'2, X'3) respectivement relié électriquement entre la masse (M) et un point de dérivation situé entre l'inductance (L1 , L2, L3) et le premier commutateur électronique (X1 , X2, X3), l'élévateur de tension (P1 , P2, P3) étant relié d'un coté à la partie de la première branche b51 comprise entre le premier interrupteur K1 et le second interrupteur K2 avec le premier commutateur électronique (X1 , X2, X3) et de l'autre coté à la partie de la seconde branche b52 comprise entre le troisième interrupteur K3 et le quatrième interrupteur K4 avec l'inductance (L1 , L2, L3). 4. Device (5) according to any one of the preceding claims, characterized in that the voltage booster (P1, P2, P3) comprises an inductor (L1, L2, L3) electrically connected in series with a first electronic switch (X1, X2, X3), a second electronic switch (ΧΊ, X'2, X'3) respectively electrically connected between the ground (M) and a bypass point located between the inductance (L1, L2, L3) and the first electronic switch (X1, X2, X3), the voltage booster (P1, P2, P3) being connected on one side to the part of the first branch b51 between the first switch K1 and the second switch K2 with the first electronic switch (X1, X2, X3) and the other side to the portion of the second branch b52 between the third switch K3 and the fourth switch K4 with the inductor (L1, L2, L3).
5. Dispositif (5) selon la revendication 4, caractérisé en ce que le second commutateur électronique (ΧΊ , X'2, X'3) est un commutateur à commutation forcée MOSFET. 5. Device (5) according to claim 4, characterized in that the second electronic switch (ΧΊ, X'2, X'3) is a forced switching switch MOSFET.
6. Dispositif (5) selon la revendication 4 ou la revendication 5, caractérisé en ce que le premier commutateur électronique (X1 , X2, X3) est un commutateur à commutation forcé MOSFET. 6. Device (5) according to claim 4 or claim 5, characterized in that the first electronic switch (X1, X2, X3) is a forced switching switch MOSFET.
7. Dispositif (5) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend en outre des premiers moyens d'acquisition et de traitement d'informations électriques internes au dit dispositif (5). 7. Device (5) according to any one of the preceding claims, characterized in that it further comprises first means for acquiring and processing electrical information internal to said device (5).
8. Dispositif (5) selon la revendication 7, caractérisé en ce qu'il comprend en outre plus des seconds moyens d'acquisition d'informations externes au dit dispositif (5). 8. Device (5) according to claim 7, characterized in that it further comprises more second information acquisition means external to said device (5).
9. Dispositif (5) selon la revendication 7 ou la revendication 8, caractérisé en ce qu'il comprend en outre des moyens de détermination et d'émission d'un signal de diagnostic. 9. Device (5) according to claim 7 or claim 8, characterized in that it further comprises means for determining and transmitting a diagnostic signal.
10. Architecture électrique destiné à équiper un véhicule automobile, l'architecture électrique comprenant un réseau de bord (4), un générateur de courant continu (2), des moyens de stockage d'énergie électrique (1 ), des moyens de démarrage (3) du véhicule automobile, caractérisée en ce qu'elle comprend un dispositif (5) de régulation en tension, réversible en courant, selon l'une des revendications précédentes connecté dans l'architecture électrique entre une première ligne électrique (b1 ) comprenant les moyens de stockage d'énergie électrique (1 ), et une seconde ligne électrique (b2) comprenant l'alternateur (2), la première branche (b1 ) étant connectée électriquement à la borne d'entrée (E) et la seconde branche (b2) étant connectée électriquement à la borne de sortie (S) du dispositif (5), la première ligne électrique (b1 ) étant reliée en parallèle à une troisième ligne électrique (b3) comprenant les moyens de démarrage (3), la seconde ligne électrique (b2) étant reliée en parallèle à une quatrième ligne électrique (b4) comprenant le générateur de courant continu (2). Electrical architecture for equipping a motor vehicle, the electrical architecture comprising an on-board network (4), a DC generator (2), electrical energy storage means (1), starting means ( 3) of the motor vehicle, characterized in that it comprises a device (5) voltage regulation, reversible current, according to one of the preceding claims connected in the electrical architecture between a first power line (b1) comprising the electrical energy storage means (1), and a second electrical line (b2) comprising the alternator (2), the first branch (b1) being electrically connected to the input terminal (E) and the second branch ( b2) being electrically connected to the output terminal (S) of the device (5), the first power line (b1) being connected in parallel with a third power line (b3) comprising the starting means (3), the seco nde electric line (b2) being connected in parallel to a fourth power line (b4) comprising the DC generator (2).
PCT/FR2012/050381 2011-03-29 2012-02-23 Current-reversible voltage regulating device and an electrical architecture intended to be fitted to an automotive vehicle comprising such a device WO2012131202A1 (en)

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FR1152582A FR2973600B1 (en) 2011-03-29 2011-03-29 CURRENT REVERSIBLE VOLTAGE REGULATION DEVICE AND ELECTRICAL ARCHITECTURE FOR EQUIPPING A MOTOR VEHICLE COMPRISING SUCH A DEVICE

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Publication number Priority date Publication date Assignee Title
EP3315765A3 (en) * 2016-10-26 2018-06-13 Imagineering, Inc. Electromagnetic wave oscillation device including buck-boost circuit

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Publication number Priority date Publication date Assignee Title
DE10231379B3 (en) * 2002-05-24 2004-01-15 Daimlerchrysler Ag Drive system for a motor vehicle with an internal combustion engine and an electric machine
FR2945996A1 (en) 2009-05-29 2010-12-03 Peugeot Citroen Automobiles Sa ELECTRIC POWER SUPPLY SYSTEM OF A THERMAL MOTOR VEHICLE PROVIDED WITH AN AUTOMATIC STOP AND RESTART DEVICE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10231379B3 (en) * 2002-05-24 2004-01-15 Daimlerchrysler Ag Drive system for a motor vehicle with an internal combustion engine and an electric machine
FR2945996A1 (en) 2009-05-29 2010-12-03 Peugeot Citroen Automobiles Sa ELECTRIC POWER SUPPLY SYSTEM OF A THERMAL MOTOR VEHICLE PROVIDED WITH AN AUTOMATIC STOP AND RESTART DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3315765A3 (en) * 2016-10-26 2018-06-13 Imagineering, Inc. Electromagnetic wave oscillation device including buck-boost circuit

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