EP1316722B1 - Electronic command circuit for an automotive engine starter - Google Patents

Electronic command circuit for an automotive engine starter Download PDF

Info

Publication number
EP1316722B1
EP1316722B1 EP02292919A EP02292919A EP1316722B1 EP 1316722 B1 EP1316722 B1 EP 1316722B1 EP 02292919 A EP02292919 A EP 02292919A EP 02292919 A EP02292919 A EP 02292919A EP 1316722 B1 EP1316722 B1 EP 1316722B1
Authority
EP
European Patent Office
Prior art keywords
transistor
control circuit
electronic control
starter according
diode
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.)
Expired - Fee Related
Application number
EP02292919A
Other languages
German (de)
French (fr)
Other versions
EP1316722A1 (en
Inventor
Régis MAILLET
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP1316722A1 publication Critical patent/EP1316722A1/en
Application granted granted Critical
Publication of EP1316722B1 publication Critical patent/EP1316722B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • F02N11/087—Details of the switching means in starting circuits, e.g. relays or electronic switches
    • 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
    • F02N11/10—Safety devices

Definitions

  • the invention relates to an electronic control circuit of a motor vehicle starter.
  • Such a starter comprises a rotary electric motor connected to an output shaft equipped with a launcher having a hub and a movable pinion intended to cooperate with a ring gear starting device for starting the internal combustion engine of the motor vehicle.
  • the pinion is generally slidably mounted on the output shaft between a rest position, in which it is disengaged from the ring gear, and an active working position in which it meshes with said ring, which is rotatably connected to rigid or elastic crankshaft of the engine of the vehicle.
  • the output shaft coincides with the output shaft of the electric motor.
  • an epicyclic gearbox is arranged between these two output shafts (see Figure 1 of FR A 2 795 884).
  • the electric motor is associated with an electromagnet contactor disposed above the motor and having an actuating coil of a movable core adapted to act on a power contact to close it and electrically power the electric motor.
  • This contactor has a dual function of supplying the electric motor with current and moving the movable pinion between the two positions of rest and work.
  • the mobile core is mechanically connected by a lever, such as a fork, to the launcher comprising a freewheel, alternatively a conical clutch described for example in the document FR A 2,826,696, interposed axially between the pinion and the hub of the launcher .
  • the lever is pivotally mounted and the launcher hub is internally provided with helical grooves engaged with complementary toothing carried by the output shaft.
  • the launcher and pinion assembly is thus animated by a helical movement during the movement of the lever to come into taken with the toothed starter ring.
  • the excitation of the contactor is controlled by the actuation of the ignition key, which closes the electrical circuit to the battery.
  • an electronic control device of a starter electromagnetic CT contactor comprises, in a well-known manner, a management unit G formed by a microcontroller cooperating with an electronic switch, for example a transistor T1 of the MOSFET type, electrically connected in series with the actuating coil L of the electromagnetic contactor CT.
  • a freewheeling diode D2 is connected in parallel across the coil L, the cathode being connected to the positive pole of the battery B, and the anode to the transistor T1.
  • the contact power C of the contactor CT when closed, connects the electric motor M of the starter to the positive pole of the battery B.
  • the management unit G drives the gate of the transistor T1 in pulse mode, for example by modulation pulse width PWM, to obtain a variation of the duty cycle of the control pulses to adjust the effective current in the coil L of the contactor CT according to different parameters.
  • the management unit G is also used to manage other functions, including the automatic shutdown of the starter after startup, protection against overcurrent, overheating in case of repeated start attempts, and the immobilizer protection during wrong maneuvers. It is either integrated in the starter or housed outside the starter in a specific housing. Such a device is described in document FR-A-2 770 349.
  • the object of the invention is to provide an electronic control circuit of a starter contactor of a motor vehicle which is protected against the risk of reversal polarity, may be caused by incorrect connections of the battery.
  • a second safety transistor is arranged in series with the first transistor and is controlled in all or nothing by a logic gate And sensitive to the open or closed state of the start switch.
  • the second transistor is a safety transistor making it possible to avoid any risk of fire of the contactor, especially when the first transistor is short-circuited.
  • the unidirectional semiconductor element for polarity reversal protection is advantageously formed by a diode.
  • the first transistor and the second transistor of the switch are advantageously formed by power transistors of the MOSFET type. These transistors can operate in case of reverse polarity of the battery, but in this case heat abnormally which can cause destruction of the starter. Thanks to the invention these transistors are protected in case of polarity reversal of the battery.
  • the first transistor is in an embodiment controlled in pulse mode by the management unit, which makes it possible to control the supply of the coil and thus the non-noisy displacement of the moving core of the contactor, in particular to power the coil of the contactor according to two phases as described in the document FR A 2,795,884 mentioned above for more details.
  • a TOPFET type transistor provides polarity control and provides combined thermal overcurrent and overvoltage protection. This transistor is controlled by an AND gate as the safety transistor.
  • the power stage 10 of the electronic control circuit of the coil L for actuating the electromagnetic CT contactor comprises a first transistor T1 PWM modulated by the management unit G, here formed by a microcontroller generating other functions as in the case of Figure 1.
  • the output S1 of the management unit G is connected to the gate of the transistor T1 by a resistive divider R1-R2.
  • a freewheel diode D2 is connected in parallel across the coil L and in series with the transistor T1.
  • a second safety transistor T2 is inserted between the first transistor T1 and ground, and is controlled in all or nothing by a logic gate AND receiving on a first input a first control signal from the output S2 of the management unit G, and on a second input a second signal representative of the open or closed state of the switch K of the ignition key.
  • the potential of the gate of the transistor T2 is set by a resistor R3 connected between the output of the AND gate and the ground.
  • the unit G monitors the state of the transistors.
  • Both transistors T1 and T2 are power transistors and are connected in series. They are constituted as examples by power transistors of the N-channel MOSFET logic, which are reliable over time and do not penalize the efficiency of the starter. Such an arrangement allows a safe starting control at low current.
  • MOSFET transistors have the particularity of having a diode in parallel between the drain and the source, said diode being reverse biased, ie the cathode in electrical connection with the positive terminal of the battery B.
  • a unidirectional semiconductor element designated by the general reference 12 is connected in the electrical circuit of the power stage 10 to prevent the flow of current when the polarity of the battery B has been reversed.
  • This element 12 is advantageously constituted by a diode D1 connected in series with the transistor T1 and connected between the battery and the freewheeling diode D2.
  • the anode of the diode D1 is in electrical connection with the positive terminal of the battery, while its cathode is connected to the cathode of the diode D2.
  • the two diodes D1 and D2 are advantageously housed in the same dual-cathode Schottky diode package, by virtue of which the diode D1 provides protection in polarity inversion, and the diode D2 provides the freewheel function of the current in the coil L of the CT contactor.
  • the use of a single component incorporating the two diodes D1 and D2 makes it possible to obtain a reduction in the size and the cost of the electronic card bearing, advantageously in the contactor, the diodes, the transistors and the management unit .
  • the diode D1 which provides protection in polarity inversion is inserted here connected between the coil L and the first transistor T1.
  • the anode of the diode D1 is connected for this purpose to the anode of the freewheeling diode D2, and the cathode of D1 is connected to the drain of the transistor T1.
  • the internal connectivity of the contactor is simplified because the positive poles of the coil L and the battery B are common, which requires a single connection at this point on the electronic card.
  • the diodes D1 and D2 are constituted in this case by individual components, because integrated dual diode housing does not exist in common anode version.
  • the power stage 10 is in accordance with that of FIG. 2, but the diode D1 which provides protection in polarity inversion, is positioned, that is to say connected, between the T2 transistor and ground.
  • the anode of diode D1 is electrically connected to the source of transistor T2, and the cathode to ground.
  • the operation is identical to that of the diagram of Figure 2, but the ground reference on the source of the transistor T2 is floating because of the threshold voltage (of the order of 1V) of the diode D1.
  • the diode D1 which provides protection in polarity inversion, is connected between the battery B and the coil L, the anode of D1 being electrically connected to the cathode of the freewheeling diode D2, and to the positive terminal of the battery B.
  • the reverse polarity protection provided by the diode D1 prohibits only the circulation of the current in the coil L.
  • the control circuit is in conformity with that of the circuit of FIG. 4, but the diode D1 of protection against the inversion of polarity is replaced by an auxiliary transistor T3 of the MOSFET type channel N.
  • the potential of gate of the transistor T3 is adjusted by a bridge comprising a Zener diode D5 whose anode is connected to ground, and a resistor R4 electrically connected to the positive terminal of the battery B.
  • the voltage drop in the transistor T3 will be lower in the case of the diode D1, but the mass reference will still be shifted by a value of the order of 0.1V to 0.3V.
  • the P channel MOSFET auxiliary T3 transistor is connected between the positive terminal of the battery B and the cathode of the freewheeling diode D2.
  • the transistor T2 is connected directly to the ground, as well as the gate of the auxiliary transistor T3.
  • the voltage drop in the transistor T3 will also be lower than in the case of the diode D1 of FIG.
  • the transistor T1 is formed by an IGBT transistor arranged between the coil L and the transistor T2. This transistor is connected between the anode of the diode D2 and the transistor T2.
  • the transistor IGBT T1 does not have a diode in parallel between the drain and the source, and thus will block the current in case of polarity reversal. Diode D1 of FIG. 2 is no longer necessary, but the voltage drop in the IGBT transistor will be greater than in a MOSFET.
  • the control of the transistor T1 IGBT requires the insertion of an amplifier stage 14 to provide a sufficient control current.
  • the amplifier stage 14 is of a type known per se, for example with two stages of amplifiers with transistors Q1 and Q2 and a zener diode Z1 whose anode is connected to ground and the cathode is connected. to the collector of transistor Q2 and the gate of transistor T1 IGBT.
  • the transistor T1 is constituted by a TOPFET transistor connected between the positive terminal of the battery B and the freewheeling diode D2 in parallel on the coil L.
  • This transistor T1 is connected between the battery and the cathode of the diode D2
  • the TOPFET transistor on the one hand, is controlled in all or nothing by an AND logic gate receiving on a first input a first control signal coming from the output S2 of the management unit G and on a second input a second signal representative of the open or closed state of the switch K of the ignition key as the transistor T2 of Figure 2, and secondly, does not have a diode in parallel between the drain and the source, and in the assembly of Figure 8, there is no potential problem during the polarity reversal.
  • the number of components is reduced and the TOPFET transistor, in addition to its polarity control function, provides combined thermal, overcurrent and overvoltage protection.
  • the potential of the gate of this transistor TOPET is fixed by a resistor R3 connected between the second input of the AND gate and the ground and by a resistor R2 connected between this second input of the AND gate and the switch K.
  • the resistors R1 , R2 form as in Figure 1 a resistive divider.
  • management unit G is well protected.
  • an AND safety gate is thus provided so that the transistor T1 is conducting only when the switch of the ignition key is closed.
  • the vehicle can not start unwanted even in case of reverse polarity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Direct Current Motors (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Description

L'invention est relative à un circuit de commande électronique d'un démarreur de véhicule automobile.The invention relates to an electronic control circuit of a motor vehicle starter.

Un tel démarreur, décrit par exemple dans le document FR A 2 795 884, comporte un moteur électrique rotatif relié à un arbre de sortie équipé d'un lanceur doté d'un moyeu et d'un pignon mobile destiné à coopérer avec une couronne dentée de démarrage pour assurer le démarrage du moteur à combustion interne du véhicule automobile. Le pignon est généralement monté à coulissement sur l'arbre de sortie entre une position de repos, dans laquelle il est désengagé de la couronne dentée, et une position active de travail dans laquelle il engrène avec ladite couronne, laquelle est liée en rotation de manière rigide ou élastique au vilebrequin du moteur du véhicule.Such a starter, described for example in document FR A 2 795 884, comprises a rotary electric motor connected to an output shaft equipped with a launcher having a hub and a movable pinion intended to cooperate with a ring gear starting device for starting the internal combustion engine of the motor vehicle. The pinion is generally slidably mounted on the output shaft between a rest position, in which it is disengaged from the ring gear, and an active working position in which it meshes with said ring, which is rotatably connected to rigid or elastic crankshaft of the engine of the vehicle.

Dans une forme de réalisation l'arbre de sortie est confondu avec l'arbre de sortie du moteur électrique. En variante un réducteur à train épicycloïdal est agencé entre ces deux arbres de sortie (voir figure 1 du document FR A 2 795 884).In one embodiment, the output shaft coincides with the output shaft of the electric motor. Alternatively an epicyclic gearbox is arranged between these two output shafts (see Figure 1 of FR A 2 795 884).

Le moteur électrique est associé à un contacteur à électroaimant disposé au-dessus du moteur et comportant une bobine d'actionnement d'un noyau mobile propre à agir sur un contact de puissance pour fermer celui-ci et alimenter électriquement le moteur électrique. Ce contacteur a une double fonction d'alimentation du moteur électrique en courant et de déplacement du pignon mobile entre les deux positions de repos et de travail.The electric motor is associated with an electromagnet contactor disposed above the motor and having an actuating coil of a movable core adapted to act on a power contact to close it and electrically power the electric motor. This contactor has a dual function of supplying the electric motor with current and moving the movable pinion between the two positions of rest and work.

Le noyau mobile est relié mécaniquement par un levier, tel qu'une fourchette, au lanceur comportant une roue libre, en variante un embrayage conique décrit par exemple dans le document FR A 2 826 696, intercalé axialement entre le pignon et le moyeu du lanceur. Le levier est monté à pivotement et le moyeu du lanceur est pourvu intérieurement de cannelures hélicoïdales en prise avec des dentures complémentaires portées par l'arbre de sortie. L'ensemble lanceur et pignon est ainsi animé d'un mouvement hélicoïdal lors du déplacement du levier pour venir en prise avec la couronne dentée de démarrage. L'excitation du contacteur est pilotée par l'actionnement de la clé de contact, qui ferme le circuit électrique vers la batterie.The mobile core is mechanically connected by a lever, such as a fork, to the launcher comprising a freewheel, alternatively a conical clutch described for example in the document FR A 2,826,696, interposed axially between the pinion and the hub of the launcher . The lever is pivotally mounted and the launcher hub is internally provided with helical grooves engaged with complementary toothing carried by the output shaft. The launcher and pinion assembly is thus animated by a helical movement during the movement of the lever to come into taken with the toothed starter ring. The excitation of the contactor is controlled by the actuation of the ignition key, which closes the electrical circuit to the battery.

Sur la figure 1, un dispositif de commande électronique d'un contacteur CT électromagnétique de démarreur, comporte d'une manière bien connue une unité de gestion G formée par un microcontrôleur coopérant avec un commutateur électronique, par exemple un transistor T1 du type MOSFET, connecté électriquement en série avec la bobine L d'actionnement du contacteur électromagnétique CT. Une diode de roue libre D2 est branchée en parallèle aux bornes de la bobine L, la cathode étant reliée au pôle positif de la batterie B, et l'anode au transistor T1.In FIG. 1, an electronic control device of a starter electromagnetic CT contactor comprises, in a well-known manner, a management unit G formed by a microcontroller cooperating with an electronic switch, for example a transistor T1 of the MOSFET type, electrically connected in series with the actuating coil L of the electromagnetic contactor CT. A freewheeling diode D2 is connected in parallel across the coil L, the cathode being connected to the positive pole of the battery B, and the anode to the transistor T1.

Le contact C de puissance du contacteur CT, lorsqu'il est fermé, relie le moteur électrique M du démarreur au pôle positif de la batterie B. L'unité de gestion G pilote la grille du transistor T1 en mode impulsions, par exemple par modulation de largeur d'impulsions PWM, permettant d'obtenir une variation du rapport cyclique des impulsions de commande pour régler le courant efficace dans la bobine L du contacteur CT en fonction de différents paramètres.The contact power C of the contactor CT, when closed, connects the electric motor M of the starter to the positive pole of the battery B. The management unit G drives the gate of the transistor T1 in pulse mode, for example by modulation pulse width PWM, to obtain a variation of the duty cycle of the control pulses to adjust the effective current in the coil L of the contactor CT according to different parameters.

L'unité de gestion G sert également à gérer d'autres fonctions, notamment l'arrêt automatique du démarreur après démarrage, la protection contre les surintensités, le sur échauffement en cas de tentatives de démarrage répétées, et la protection anti-démarrage lors de fausses manoeuvres. Elle est soit intégrée dans le démarreur, soit logée hors du démarreur dans un boîtier spécifique. Un tel dispositif est décrit dans le document FR-A-2 770 349.The management unit G is also used to manage other functions, including the automatic shutdown of the starter after startup, protection against overcurrent, overheating in case of repeated start attempts, and the immobilizer protection during wrong maneuvers. It is either integrated in the starter or housed outside the starter in a specific housing. Such a device is described in document FR-A-2 770 349.

En cas d'intervention sur la batterie du véhicule lors d'une révision ou d'un dépannage, par exemple lors de la mise en place de la batterie ou de son remplacement, ou lors d'un démarrage par une batterie auxiliaire de secours, une connexion erronée des bornes de la batterie peut engendrer une inversion de polarité sur le démarreur. A la figure 1, une telle inversion de polarité provoque une circulation d'un premier courant inverse Ic dans l'étage de puissance du transistor T1 à travers la bobine L, et d'un deuxième courant inverse Im dans le moteur M.In the event of intervention on the vehicle battery during a revision or a repair, for example during the installation of the battery or its replacement, or during a start by a backup auxiliary battery, incorrect connection of the battery terminals may cause reverse polarity on the starter. In FIG. 1, such a reversal of polarity causes circulation of a first inverse current Ic in the power stage of the transistor T1 through the coil L, and a second reverse current Im in the motor M.

Les inconvénients d'une mauvaise connexion électrique (inversion de polarité) sont doubles :

  • d'une part des problèmes de qualité et de fiabilité, car le courant inverse Ic de plusieurs centaines d'ampères, circule dans la diode roue libre D2, et provoque sa destruction. La bobine L du contacteur CT est alors excitée sous un courant de 50A, ce qui entraîne la fermeture du contact de puissance C et l'alimentation du moteur M électrique. Le sens de rotation est inversé pour un moteur M ayant un inducteur à aimant permanent. Le sens de rotation est normal pour un inducteur bobiné.
  • d'autre part des problèmes de sécurité, car pour un démarreur à inducteur bobiné, la rotation du démarreur provoque l'entraînement de la couronne dentée par le pignon. Si une vitesse est restée enclenchée dans la boîte de vitesse, il sera alors possible de déplacer le véhicule avec des risques d'accident ou de collision, et des risques d'incendie du démarreur si l'inversion de polarité est maintenue.
The disadvantages of a bad electrical connection (reverse polarity) are double:
  • on the one hand problems of quality and reliability, because the reverse current Ic of several hundred amperes, circulates in the freewheeling diode D2, and causes its destruction. The coil L of the contactor CT is then energized under a current of 50A, which causes the closing of the power contact C and the power supply of the electric motor M. The direction of rotation is reversed for a motor M having a permanent magnet inductor. The direction of rotation is normal for a wound inductor.
  • on the other hand safety problems, because for a starter coil wound, rotation of the starter causes the driving of the ring gear by the pinion. If a speed has remained engaged in the gearbox, it will then be possible to move the vehicle with the risk of accident or collision, and the risk of starter fire if the reverse polarity is maintained.

Les brevets US 4 209 816 et US 4 490 620 décrivent un système de contrôle électrique de protection pour démarreur de véhicule automobile.US Pat. Nos. 4,209,816 and 4,490,620 describe an electrical protection control system for a motor vehicle starter.

Le but de l'invention consiste à réaliser un circuit de commande électronique d'un contacteur de démarreur de véhicule automobile qui soit protégé contre les risques d'inversion de polarité, susceptibles d'être occasionnés par des connexions erronées de la batterie.The object of the invention is to provide an electronic control circuit of a starter contactor of a motor vehicle which is protected against the risk of reversal polarity, may be caused by incorrect connections of the battery.

Ce problème est résolu, conformément à l'invention, par la partie caractérisante de la revendication 1.This problem is solved according to the invention by the characterizing part of claim 1.

Dans le cas d'une mauvaise connexion de la batterie où le pôle positif serait branché par erreur à la masse, la présence de l'élément semi-conducteur unidirectionnel bloque le passage du courant dans l'étage de puissance lorsque l'interrupteur de démarrage est fermé. Toute inversion du courant est ainsi rendue impossible, et la bobine n'est pas excitée. Le contacteur reste ouvert en interdisant la rotation du moteur électrique du démarreur en sorte que le véhicule ne peut se déplacer même si une vitesse reste engagée. Tout risque d'incendie est évité.In the case of a bad battery connection where the positive pole is mistakenly connected to ground, the presence of the unidirectional semiconductor element blocks the passage of current in the power stage when the start switch is closed. Any reversal of the current is thus made impossible, and the coil is not excited. The contactor remains open by prohibiting rotation of the electric starter motor so that the vehicle can not move even if a speed remains engaged. Any risk of fire is avoided.

Avantageusement un deuxième transistor de sécurité est disposé en série avec le premier transistor et est commandé en tout ou rien par une porte logique Et sensible à l'état ouvert ou fermé de l'interrupteur de démarrage.Advantageously a second safety transistor is arranged in series with the first transistor and is controlled in all or nothing by a logic gate And sensitive to the open or closed state of the start switch.

On appréciera que le deuxième transistor est un transistor de sécurité permettant d'éviter tout risque d'incendie du contacteur notamment lorsque le premier transistor est en court-circuit.It will be appreciated that the second transistor is a safety transistor making it possible to avoid any risk of fire of the contactor, especially when the first transistor is short-circuited.

L'élément semi-conducteur unidirectionnel de protection en inversion de polarité est formé avantageusement par une diode.The unidirectional semiconductor element for polarity reversal protection is advantageously formed by a diode.

Le premier transistor et le deuxième transistor du commutateur sont formés avantageusement par des transistors de puissance du type MOSFET. Ces transistors peuvent fonctionner en cas d'inversion de polarité de la batterie, mais dans ce cas chauffent anormalement ce qui peut entraîner une destruction du démarreur. Grâce à l'invention ces transistors sont protégés en cas d'inversion de polarité de la batterie.The first transistor and the second transistor of the switch are advantageously formed by power transistors of the MOSFET type. These transistors can operate in case of reverse polarity of the battery, but in this case heat abnormally which can cause destruction of the starter. Thanks to the invention these transistors are protected in case of polarity reversal of the battery.

Le premier transistor est dans un mode de réalisation commandé en mode impulsion par l'unité de gestion ce qui permet de bien piloter l'alimentation de la bobine et donc le déplacement de manière non bruyante du noyau mobile du contacteur, notamment d'alimenter la bobine du contacteur selon deux phases comme décrit dans le document FR A 2 795 884 précité auquel on se reportera pour plus de précisions.The first transistor is in an embodiment controlled in pulse mode by the management unit, which makes it possible to control the supply of the coil and thus the non-noisy displacement of the moving core of the contactor, in particular to power the coil of the contactor according to two phases as described in the document FR A 2,795,884 mentioned above for more details.

Dans un mode de réalisation un transistor du type TOPFET assure le contrôle de la polarité et permet une protection combinée thermique de surintensité et de surtension.
Ce transistor est commandé par une porte ET comme le transistor de sécurité.In one embodiment, a TOPFET type transistor provides polarity control and provides combined thermal overcurrent and overvoltage protection.
This transistor is controlled by an AND gate as the safety transistor.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, et représenté aux dessins annexés dans lesquels :

  • la figure 1 représente schématiquement le circuit de commande électronique d'un démarreur conforme à l'état de la technique;
  • la figure 2 montre le circuit de commande électronique d'un démarreur conforme à l'invention ;
  • les figures 3 à 9 illustrent différentes variantes de réalisation du circuit de commande selon l'invention.
Other advantages and features will emerge more clearly from the following description of a mode of embodiment of the invention given by way of non-limiting example, and represented in the accompanying drawings in which:
  • Figure 1 shows schematically the electronic control circuit of a starter according to the state of the art;
  • FIG. 2 shows the electronic control circuit of a starter according to the invention;
  • Figures 3 to 9 illustrate different embodiments of the control circuit according to the invention.

Sur la figure 2, l'étage de puissance 10 du circuit de commande électronique de la bobine L d'actionnement du contacteur CT électromagnétique, comporte un premier transistor T1 commandé en modulation PWM par l'unité de gestion G, ici formée par un microcontrôleur générant d'autres fonctions comme dans le cas de la figure 1. La sortie S1 de l'unité de gestion G est connectée à la grille du transistor T1 par un diviseur résistif R1-R2. Une diode de roue libre D2 est branchée en parallèle aux bornes de la bobine L et en série avec le transistor T1.In FIG. 2, the power stage 10 of the electronic control circuit of the coil L for actuating the electromagnetic CT contactor comprises a first transistor T1 PWM modulated by the management unit G, here formed by a microcontroller generating other functions as in the case of Figure 1. The output S1 of the management unit G is connected to the gate of the transistor T1 by a resistive divider R1-R2. A freewheel diode D2 is connected in parallel across the coil L and in series with the transistor T1.

Un deuxième transistor T2 de sécurité est inséré entre le premier transistor T1 et la masse, et est commandé en tout ou rien par une porte logique ET recevant sur une première entrée un premier signal de commande issu de la sortie S2 de l'unité de gestion G, et sur une deuxième entée un deuxième signal représentatif de l'état ouvert ou fermé de l'interrupteur K de la clé de contact. Le potentiel de la grille du transistor T2 est fixé par une résistance R3 connectée entre la sortie de la porte ET et la masse. L'unité G surveille l'état des transistors.A second safety transistor T2 is inserted between the first transistor T1 and ground, and is controlled in all or nothing by a logic gate AND receiving on a first input a first control signal from the output S2 of the management unit G, and on a second input a second signal representative of the open or closed state of the switch K of the ignition key. The potential of the gate of the transistor T2 is set by a resistor R3 connected between the output of the AND gate and the ground. The unit G monitors the state of the transistors.

Les deux transistors T1 et T2 sont des transistors de puissance et sont connectés en série. Ils sont constitués à titre d'exemples par des transistors de puissance du type MOSFET canal N logique, qui sont fiables dans le temps et qui ne pénalisent pas le rendement du démarreur. Un tel montage permet une commande sécurisée de démarrage à faible courant. Les transistors MOSFET ont la particularité de posséder une diode en parallèle entre le drain et la source, ladite diode étant polarisée en inverse, c'est à dire la cathode en liaison électrique avec la borne positive de la batterie B.Both transistors T1 and T2 are power transistors and are connected in series. They are constituted as examples by power transistors of the N-channel MOSFET logic, which are reliable over time and do not penalize the efficiency of the starter. Such an arrangement allows a safe starting control at low current. MOSFET transistors have the particularity of having a diode in parallel between the drain and the source, said diode being reverse biased, ie the cathode in electrical connection with the positive terminal of the battery B.

Selon l'invention, un élément semi-conducteur unidirectionnel désigné par le repère général 12, est connecté dans le circuit électrique de l'étage de puissance 10 pour interdire le passage du courant lorsque la polarité de la batterie B a été inversée. Cet élément 12 est constitué avantageusement par une diode D1 montée en série avec le transistor T1 et connectée entre la batterie et la diode de roue libre D2. L'anode de la diode D1 est en liaison électrique avec la borne positive de la batterie, tandis que sa cathode est connectée à la cathode de la diode D2.According to the invention, a unidirectional semiconductor element designated by the general reference 12 is connected in the electrical circuit of the power stage 10 to prevent the flow of current when the polarity of the battery B has been reversed. This element 12 is advantageously constituted by a diode D1 connected in series with the transistor T1 and connected between the battery and the freewheeling diode D2. The anode of the diode D1 is in electrical connection with the positive terminal of the battery, while its cathode is connected to the cathode of the diode D2.

Les deux diodes D1 et D2 sont pour une bonne intégration avantageusement logées dans un même boîtier double diode Schottky à cathodes communes, grâce auquel la diode D1 assure la protection en inversion de polarité, et la diode D2 assure la fonction roue libre du courant dans la bobine L du contacteur CT. L'utilisation d'un composant unique incorporant les deux diodes D1 et D2 permet d'obtenir une réduction de l'encombrement et du coût de la carte électronique portant, avantageusement dans le contacteur, les diodes, les transistors et l'unité de gestion.For good integration, the two diodes D1 and D2 are advantageously housed in the same dual-cathode Schottky diode package, by virtue of which the diode D1 provides protection in polarity inversion, and the diode D2 provides the freewheel function of the current in the coil L of the CT contactor. The use of a single component incorporating the two diodes D1 and D2 makes it possible to obtain a reduction in the size and the cost of the electronic card bearing, advantageously in the contactor, the diodes, the transistors and the management unit .

Le fonctionnement de l'étage de puissance 10 du circuit de commande électronique du démarreur découle de la description précédente :

  • Dans le cas d'une polarité correcte de la batterie B comme représentée à la figure 2, une commande de démarrage normale intervient suite à la fermeture de l'interrupteur K de la clé de contact. Les deux transistors T1 et T2 sont commutés dans l'état conducteur autorisant la circulation du courant depuis le pôle positif de la batterie B vers la masse à travers respectivement la diode D1, la bobine L, le premier transistor T1, et le deuxième transistor T2. L'excitation de la bobine L provoque la fermeture du contact de puissance C du contacteur CT, et l'alimentation du moteur électrique M du démarreur.
  • Dans le cas d'une mauvaise connexion de la batterie B où le pôle positif serait branché par erreur à la masse (inversion de polarité), la présence de la diode D1 bloque le passage du courant dans l'étage de puissance 10 lorsque l'interrupteur K est fermé. Toute inversion du courant est ainsi rendue impossible, et la bobine L n'est pas excitée. Le contacteur CT reste ouvert en interdisant la rotation du moteur M.
The operation of the power stage 10 of the electronic control circuit of the starter follows from the preceding description:
  • In the case of a correct polarity of the battery B as represented in FIG. 2, a normal start command occurs following the closing of the switch K of the ignition key. The two transistors T1 and T2 are switched in the conductive state allowing the flow of current from the positive pole of the battery B to ground through respectively the diode D1, the coil L, the first transistor T1, and the second transistor T2 . The excitation of the coil L causes the closing of the power contact C of the contactor CT, and the power supply of the electric motor M of the starter.
  • In the case of a bad connection of the battery B where the positive pole is erroneously connected to the ground (polarity inversion), the presence of the diode D1 blocks the passage of the current in the power stage 10 when the switch K is closed. Any reversal of the current is thus made impossible, and the coil L is not excited. The CT contactor remains open by prohibiting the rotation of the motor M.

Par simplicité on n'a pas représenté dans les autres figures 3 à 9 le contact de puissance C du contacteur électromagnétique CT ni le moteur électrique visibles dans les figures 1 et 2. Le branchement des bornes du contact C sur la bobine et sur le moteur électrique relié à la masse se fait de la même manière.For simplicity, in the other FIGS. 3 to 9, the power contact C of the electromagnetic contactor CT and the electric motor visible in FIGS. 1 and 2 have not been represented. The terminals of contact C on the coil and on the motor are connected. electrical connected to the ground is done in the same way.

Sur la variante de la figure 3, la diode D1 qui assure la protection en inversion de polarité, est insérée, ici connectée, entre la bobine L et le premier transistor T1. L'anode de la diode D1 est branchée à cet effet à l'anode de la diode D2 de roue libre, et la cathode de D1 est connectée au drain du transistor T1. Par rapport au circuit de la figure 2, on simplifie la connectique interne du contacteur, car les pôles positifs de la bobine L et de la batterie B sont communs, ce qui nécessite une seule connexion à cet endroit sur la carte électronique. Les diodes D1 et D2 sont constituées dans ce cas par des composants individuels, car un boîtier double diode intégrée n'existe pas en version anode commune.In the variant of FIG. 3, the diode D1 which provides protection in polarity inversion is inserted here connected between the coil L and the first transistor T1. The anode of the diode D1 is connected for this purpose to the anode of the freewheeling diode D2, and the cathode of D1 is connected to the drain of the transistor T1. Compared to the circuit of Figure 2, the internal connectivity of the contactor is simplified because the positive poles of the coil L and the battery B are common, which requires a single connection at this point on the electronic card. The diodes D1 and D2 are constituted in this case by individual components, because integrated dual diode housing does not exist in common anode version.

Dans le schéma de la figure 4, l'étage de puissance 10 est conforme à celui de la figure 2, mais la diode D1 qui assure la protection en inversion de polarité, est positionnée, c'est-à-dire connectée, entre le transistor T2 et la masse. L'anode de la diode D1 est reliée électriquement à la source du transistor T2, et la cathode à la masse. Le fonctionnement est identique à celui du schéma de la figure 2, mais la référence de masse sur la source du transistor T2 est flottante à cause de la tension de seuil (de l'ordre de 1V) de la diode D1.In the diagram of FIG. 4, the power stage 10 is in accordance with that of FIG. 2, but the diode D1 which provides protection in polarity inversion, is positioned, that is to say connected, between the T2 transistor and ground. The anode of diode D1 is electrically connected to the source of transistor T2, and the cathode to ground. The operation is identical to that of the diagram of Figure 2, but the ground reference on the source of the transistor T2 is floating because of the threshold voltage (of the order of 1V) of the diode D1.

Sur l'autre variante de la figure 5, la diode D1 qui assure la protection en inversion de polarité, est connectée entre la batterie B et la bobine L, l'anode de D1 étant reliée électriquement à la cathode de la diode D2 de roue libre, et à la borne positive de la batterie B. La protection en inversion de polarité procurée par la diode D1 interdit uniquement la circulation du courant dans la bobine L.In the other variant of FIG. 5, the diode D1 which provides protection in polarity inversion, is connected between the battery B and the coil L, the anode of D1 being electrically connected to the cathode of the freewheeling diode D2, and to the positive terminal of the battery B. The reverse polarity protection provided by the diode D1 prohibits only the circulation of the current in the coil L.

En référence à la figure 6, le circuit de commande est conforme à celui du montage de la figure 4, mais la diode D1 de protection contre l'inversion de polarité est remplacée par un transistor T3 auxiliaire du type MOSFET canal N. Le potentiel de grille du transistor T3 est ajusté par un pont comprenant une diode Zener D5 dont l'anode est branchée à la masse, et une résistance R4 reliée électriquement à la borne positive de la batterie B. La chute de tension dans le transistor T3 sera plus faible que dans le cas de la diode D1, mais la référence de masse restera néanmoins décalée d'une valeur de l'ordre de 0,1V à 0,3V.With reference to FIG. 6, the control circuit is in conformity with that of the circuit of FIG. 4, but the diode D1 of protection against the inversion of polarity is replaced by an auxiliary transistor T3 of the MOSFET type channel N. The potential of gate of the transistor T3 is adjusted by a bridge comprising a Zener diode D5 whose anode is connected to ground, and a resistor R4 electrically connected to the positive terminal of the battery B. The voltage drop in the transistor T3 will be lower in the case of the diode D1, but the mass reference will still be shifted by a value of the order of 0.1V to 0.3V.

Sur la figure 7, le transistor T3 auxiliaire du type MOSFET canal P est connecté entre la borne positive de la batterie B et la cathode de la diode de roue libre D2. Dans ce cas, le transistor T2 est branché directement à la masse, ainsi que la grille du transistor T3 auxiliaire. La chute de tension dans le transistor T3 sera également plus faible que dans le cas de la diode D1 de la figure 2.In FIG. 7, the P channel MOSFET auxiliary T3 transistor is connected between the positive terminal of the battery B and the cathode of the freewheeling diode D2. In this case, the transistor T2 is connected directly to the ground, as well as the gate of the auxiliary transistor T3. The voltage drop in the transistor T3 will also be lower than in the case of the diode D1 of FIG.

Sur la figure 8, le transistor T1 est formé par un transistor IGBT agencé entre la bobine L et le transistor T2. Ce transistor est connecté entre l'anode de la diode D2 et le transistor T2. Le transistor T1 IGBT ne possède pas de diode en parallèle entre le drain et la source, et permettra de ce fait le blocage du courant en cas d'inversion de polarité. La diode D1 de la figure 2 n'est plus nécessaire, mais la chute de tension dans le transistor IGBT sera plus importante que dans un MOSFET. De plus, la commande du transistor T1 IGBT nécessite l'insertion d'un étage amplificateur 14 pour fournir un courant de commande suffisant. L'étage amplificateur 14 est d'un type connu en soi, par exemple avec deux étages d'amplificateurs à transistors Q1 et Q2 et une diode Zener Z1 dont l'anode est branchée à la masse et la cathode est reliée au collecteur du transistor Q2 et à la grille du transistor T1 IGBT.In FIG. 8, the transistor T1 is formed by an IGBT transistor arranged between the coil L and the transistor T2. This transistor is connected between the anode of the diode D2 and the transistor T2. The transistor IGBT T1 does not have a diode in parallel between the drain and the source, and thus will block the current in case of polarity reversal. Diode D1 of FIG. 2 is no longer necessary, but the voltage drop in the IGBT transistor will be greater than in a MOSFET. In addition, the control of the transistor T1 IGBT requires the insertion of an amplifier stage 14 to provide a sufficient control current. The amplifier stage 14 is of a type known per se, for example with two stages of amplifiers with transistors Q1 and Q2 and a zener diode Z1 whose anode is connected to ground and the cathode is connected. to the collector of transistor Q2 and the gate of transistor T1 IGBT.

Sur la figure 9, le transistor T1 est constitué par un transistor TOPFET relié entre la borne positive de la batterie B et la diode de roue libre D2 en parallèle sur la bobine L. Ce transistor T1 est connecté entre la batterie et la cathode de la diode D2 Le transistor TOPFET, d'une part est commandé en tout ou rien par une porte logique ET recevant sur une première entrée un premier signal de commande issu de la sortie S2 de l'unité de gestion G et sur une deuxième entrée un deuxième signal représentatif de l'état ouvert ou fermé de l'interrupteur K de la clé de contact comme le transistor T2 de la figure 2, et d'autre part, ne présente pas de diode en parallèle entre le drain et la source, et comme dans le montage de la figure 8, il n'y a pas de problème potentiel lors de l'inversion de polarité. Le nombre de composants est réduit et le transistor TOPFET, en plus de sa fonction de contrôle de polarité, permet une protection combinée thermique, de surintensité et de surtension. Le potentiel de la grille de ce transistor TOPET est fixé par une résistance R3 connectée entre la deuxième entrée de la porte ET et la masse et par une résistance R2 connectée entre cette deuxième entrée de la porte ET et l'interrupteur K. Les résistances R1, R2 forment comme à la figure 1 un diviseur résistif.In FIG. 9, the transistor T1 is constituted by a TOPFET transistor connected between the positive terminal of the battery B and the freewheeling diode D2 in parallel on the coil L. This transistor T1 is connected between the battery and the cathode of the diode D2 The TOPFET transistor, on the one hand, is controlled in all or nothing by an AND logic gate receiving on a first input a first control signal coming from the output S2 of the management unit G and on a second input a second signal representative of the open or closed state of the switch K of the ignition key as the transistor T2 of Figure 2, and secondly, does not have a diode in parallel between the drain and the source, and in the assembly of Figure 8, there is no potential problem during the polarity reversal. The number of components is reduced and the TOPFET transistor, in addition to its polarity control function, provides combined thermal, overcurrent and overvoltage protection. The potential of the gate of this transistor TOPET is fixed by a resistor R3 connected between the second input of the AND gate and the ground and by a resistor R2 connected between this second input of the AND gate and the switch K. The resistors R1 , R2 form as in Figure 1 a resistive divider.

Il est clair que tout autre moyen de protection contre l'inversion de polarité peut être utilisé dans le dispositif de commande électronique du contacteur CT de démarreur.It is clear that any other means of protection against reverse polarity can be used in the electronic control device of the starter CT contactor.

On appréciera que l'unité de gestion G est bien protégée.It will be appreciated that the management unit G is well protected.

Dans les figures 2 à 9 il est ainsi prévu une porte ET de sécurité en sorte que le transistor T1 est passant que lorsque l'interrupteur de la clé de contact est fermé. Le véhicule ne peut donc démarrer de manière non voulue même en cas d'inversion de polarité.In FIGS. 2 to 9, an AND safety gate is thus provided so that the transistor T1 is conducting only when the switch of the ignition key is closed. The vehicle can not start unwanted even in case of reverse polarity.

Claims (19)

  1. Electronic control circuit for a motor vehicle starter, comprising an electromagnetic contactor (CT) for supplying the electric motor (M) of the starter from the energy of the battery (3), and control means comprising:
    an electronic switch inserted electrically in series in the power stage (10) with the coil (L) of the contactor (CT),
    - a management unit (G) cooperating with the electronic switch for adjusting the excitation current of the coil (L),
    - and a freewheeling diode (D2) connected in parallel to the terminals of the said coil (L),
    characterised in that the power stage (10) also comprises a unidirectional semiconductor element intended to prevent passage of the current in the event of reversal of polarity of the battery (B) and in that the electronic switch comprises a first transistor (T1) controlled by the management unit (G) and a second transistor (T2) disposed in series with the first transistor (T1) and controlled in two-state mode by a logic gate (ET) sensitive to the open or closed state of the starting switch K.
  2. Electronic control circuit for a starter according to claim 1, characterised in that the unidirectional semiconductor element for polarity reversal protection is formed by a diode (D1).
  3. Electronic control circuit for a starter according to claim 2, characterised in that the protection diode (D1) is connected between the battery (B) and the freewheeling diode (D2), the cathodes of the two diodes (D1, D2) being common.
  4. Electronic control circuit for a starter according to claim 3, characterised in that the two diodes are housed in the same Schottky double-diode box with common cathodes.
  5. Electronic control circuit for a starter according to claim 2, characterised in that the protection diode (D1) is connected between the coil (L) and the first transistor (T1), anodes of the two diodes (D1, D2) being common.
  6. Electronic control circuit for a starter according to claim 2, characterised in that the protection diode (D1) is connected between the second transistor (T2) and earth.
  7. Electronic control circuit for a starter according to claim 2, characterised in that the protection diode (D1) is connected between the battery (B) and the coil (L), the anode of the protection diode (D1) being in electrical connection with the cathode of the freewheeling diode (D2).
  8. Electronic control circuit for a starter according to claim 1, characterised in that the unidirectional semiconductor element is formed by an auxiliary transistor (T3) of the MOSFET type.
  9. Electronic control circuit for a starter according to claim 8, characterised in that the auxiliary transistor (T3) is connected between the second transistor (T2) and earth.
  10. Electronic control circuit for a starter according to claim 9, characterised in that the potential of the gate of the auxiliary transistor (T3) is adjusted by a bridge comprising a Xener diode (D5), the anode of which is connected to earth, and a resistor (R4) electrically connected to the positive terminal of the battery.
  11. Electronic control circuit for a starter according to claim 8, characterised in that the auxiliary transistor (T3) is connected between the battery (B) and the cathode of the freewheeling diode (D2).
  12. Electronic control circuit for a starter according to any one of claims 1 to 11, characterised in that the first transistor (T1) and the second transistor (T2) of the electronic switch are formed by MOSFET transistors.
  13. Electronic control circuit for a starter according to claim 12, characterised in that the output of the management unit is connected to the gate of the first transistor (T1) by a resistive divider (R1-R2)
  14. Electronic control circuit for a starter according to claim 1, characterised in that the first transistor (T1) consists of an IGBT transistor connected between the anode of the freewheeling diode (D2) and the second transistor (T2).
  15. Electronic control circuit for a starter according to claim 14, characterised in that the first transistor (T1) is controlled by an amplifier stage (14).
  16. Electronic control circuit for a starter according to any one of claims 1 to 15, characterised in that the second transistor (T2) is a MOSFET transistor and in that the potential of the gate of the second transistor (T2) is fixed by a resistor (R3) connected between the output of the AND gate and earth.
  17. Electronic control circuit for a starter according to any one of claims 1 to 16, characterised in that the first transistor (T1) is controlled in pulse mode by the management unit (G).
  18. Electronic control circuit for a starter according to claim 1,
    characterised in that the electronic switch consists of a TOPFET transistor connected between the battery (B) and the cathode of the freewheeling diode (D2).
  19. Electronic control circuit for a starter according to claim 18, characterised in that the transistor is controlled in two-state mode by a logic gate (ET) sensitive to the open or closed state of the starter switch K.
EP02292919A 2001-11-30 2002-11-26 Electronic command circuit for an automotive engine starter Expired - Fee Related EP1316722B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0115555 2001-11-30
FR0115555A FR2834756B1 (en) 2001-11-30 2001-11-30 ELECTRONIC CONTROL CIRCUIT OF A MOTOR VEHICLE STARTER

Publications (2)

Publication Number Publication Date
EP1316722A1 EP1316722A1 (en) 2003-06-04
EP1316722B1 true EP1316722B1 (en) 2007-04-04

Family

ID=8870009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292919A Expired - Fee Related EP1316722B1 (en) 2001-11-30 2002-11-26 Electronic command circuit for an automotive engine starter

Country Status (4)

Country Link
EP (1) EP1316722B1 (en)
DE (1) DE60219268T2 (en)
ES (1) ES2284799T3 (en)
FR (1) FR2834756B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010062708B4 (en) * 2010-12-09 2019-08-08 Robert Bosch Gmbh Mobile power supply
DE102017201893A1 (en) * 2017-01-12 2018-07-12 Continental Teves Ag & Co. Ohg Electronic circuit for securing a power supply of a receiving device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209816A (en) * 1978-07-07 1980-06-24 Eaton Corporation Protective control for vehicle starter and electrical systems
US4490620A (en) * 1983-09-12 1984-12-25 Eaton Corporation Engine starter protective and control module and system
US5287831A (en) * 1991-08-15 1994-02-22 Nartron Corporation Vehicle starter and electrical system protection
FR2770349B1 (en) 1997-10-24 2000-01-14 Valeo Equip Electr Moteur DEVICE FOR CONTROLLING A STARTER OF A MOTOR VEHICLE
GB2338845A (en) * 1998-06-25 1999-12-29 Siemens Electromech Components Battery isolation relay

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
ES2284799T3 (en) 2007-11-16
DE60219268T2 (en) 2008-01-03
FR2834756A1 (en) 2003-07-18
DE60219268D1 (en) 2007-05-16
EP1316722A1 (en) 2003-06-04
FR2834756B1 (en) 2004-10-15

Similar Documents

Publication Publication Date Title
EP0911953B1 (en) Control device for a vehicle starter
FR2769670A1 (en) CIRCUIT AND METHOD FOR CONTROLLING AN ELECTRIC MACHINE
FR2812036A1 (en) DEVICE FOR CONTROLLING THE STARTER OF A HEAT ENGINE
EP1436878B1 (en) Alternator with rectifier bridge, in particular for motor vehicle
FR2891963A1 (en) Electric power generation control device for vehicle alternator, has circuit to control generation based on supply provided by supply circuit operated when receiving circuit receives control signal transferred from external controller
FR3035284A1 (en) VOLTAGE REGULATOR OF A MOTOR VEHICLE ALTERNATOR, REGULATOR BRUSH HOLDER AND CORRESPONDING ALTERNATORS
FR2960265A1 (en) Heat engine starting device for vehicle, has short-circuit switch short-circuiting resistor and comprising normally closed contact that is switched to closed-circuit after contact of starter switch is switched to closed-circuit
EP0338926A1 (en) Elevated tension electric power supply for feeding the auxiliary circuit of a motor vehicle
FR2746449A1 (en) METHOD AND DEVICE FOR CONTROLLING A POWER SWITCH OF A MOTOR VEHICLE STARTER
EP1316722B1 (en) Electronic command circuit for an automotive engine starter
EP3224469A1 (en) Device for controlling the power supply of a starter solenoid
WO2018050991A1 (en) Method for supplying an inductive load
FR2775137A1 (en) INDUCTIVE LOAD SWITCHING DEVICE
FR2865066A1 (en) METHOD AND DEVICE FOR MANAGING AN INDUCTIVE LOAD WITH ELECTRICAL VOLTAGES OF DIFFERENT AMPLITUDES
EP0921306B1 (en) Control device for an automotive vehicle starter
EP3408920B1 (en) Energy transfer control device with active control of electromagnetic interference
WO2006018503A2 (en) Device for piloting an electric motor driving a power switch element, and module forming a switch provided with said device
EP1176287B1 (en) Valve actuator driving device with stabilized current
FR3019396A1 (en) VOLTAGE STABILIZATION SYSTEM
EP1032110A1 (en) Alternator with perfectionate protection means by load shedding and associated regulator
FR2772085A1 (en) IMPROVEMENT IN DEVICES FOR CONTROLLING A MOTOR VEHICLE STARTER
FR2802363A1 (en) Improved rotor winding current control for an automobile alternator, starter or alternator/starter has provision for short-term operation with over-excitation
FR2771866A1 (en) SYSTEM FOR CONTROLLING THE SUPPLY OF AN ELECTRIC MOTOR FOR ACTIVATING A FUNCTIONAL PART OF A MOTOR VEHICLE
EP1378661A1 (en) starting system with a control device separated of the starter
FR2896346A1 (en) Circuit breaker assembly for vehicle`s storage battery, has movable contact unit displaced to close or open electric contact between terminals of assembly, and electronic circuit with microprocessor for managing displacement of contact unit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030912

AKX Designation fees paid

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 60219268

Country of ref document: DE

Date of ref document: 20070516

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070518

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2284799

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20080107

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20161121

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20161116

Year of fee payment: 15

Ref country code: ES

Payment date: 20161130

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20171126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171126

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20181112

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20181129

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60219268

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200603

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191130