EP0796992B1 - Method and device for controlling a driving contactor for a vehicle starter motor - Google Patents
Method and device for controlling a driving contactor for a vehicle starter motor Download PDFInfo
- Publication number
- EP0796992B1 EP0796992B1 EP97400625A EP97400625A EP0796992B1 EP 0796992 B1 EP0796992 B1 EP 0796992B1 EP 97400625 A EP97400625 A EP 97400625A EP 97400625 A EP97400625 A EP 97400625A EP 0796992 B1 EP0796992 B1 EP 0796992B1
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- EP
- European Patent Office
- Prior art keywords
- signal
- open
- power contact
- starter
- closed state
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- 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.)
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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
- F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
-
- 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 present invention relates to methods and to devices for controlling a contactor motor vehicle starter.
- the supply of a starter motor vehicle is controlled by a contactor winding power, controlled by electronics.
- the role of such a contactor is, on the one hand, to constitute a linear actuator to move a pinion launcher along a motor shaft from a rest position at a meshing position with a ring gear located under a flywheel and, on the other hand, constitute a power relay whose contact allows the starter electric motor supply, said motor driving the starter pinion in rotation.
- Control electronics generally include a transistor type switch which controls the passage current in the contactor winding.
- the command is all or nothing or progressive as it has been proposed in patent application FR 2 679 717.
- the winding is supplied with state of call by a strong current, so as to develop the mechanical forces necessary to propel the pinion starter in the engine starter ring thermal.
- the contactor has two windings, including a call winding and a holding winding, the supply passes at the end of previous period at sufficient reduced current level to keep the power contactor closed.
- the contactor winding (whether it is one or more windings) and the control transistor are the seat significant heat release.
- This operating mode is normally very in short, on the order of a few tenths of a second, this which prevents deterioration by thermal effect of components cited.
- the operating time in call mode is as long as the duration of keeping the ignition key in the start position.
- This duration is left to the discretion of the vehicle driver; in practice, it can sometimes reach several tens of seconds, which is more than enough to damage the transistor or contactor winding.
- the causes of non-closure of the power switch can be numerous: in addition to the mechanical causes, they can also be related to the presence of non-conductive bodies at the contact surface: dust, insulating particles, icing, oxidation, ...
- An object of the invention is therefore to propose a method and control device which allow avoid deterioration of the transistor or the winding of the contactor when due to a fault in the contactor operating time in call state is too important.
- a device for the control of a vehicle starter switch automotive, said contactor comprising at least one winding and a power contact whose closure allows the starter to be supplied, said device comprising means for measuring a signal including evolutions are characteristic of the open state or closed the power contact and to process this signal to detect the open or closed state of the contact power, as well as means to cut or reduce the call supply of the winding (s) when the power contact is always open after a predetermined time from the start of the call supply, characterized in that the signal measured is the voltage across the starter, or the intensity that flows in it, or even a signal characteristic of the speed of rotation of the starter or heat engine and in that the means detection of the open or closed state of the contact power include means for smoothing this signal measured before processing for condition detection open or closed of the power contact.
- a motor is shown electric D which constitutes the starter of the vehicle and whose supply is controlled by a contact of power 1.
- This electric motor D is mounted between a terminal B + at the supply voltage of the battery and earth.
- Contact 1 is interposed between the supply terminal B + and the starter D.
- winding 2 mounted between the supply terminal B + and the ground.
- the supply of the winding 2 is itself controlled by a switch 3 interposed between the winding 2 and the ground.
- switch 3 is a MOSFET type transistor, the drain of which is connected to winding 2 and whose source is connected to ground.
- the gate voltage of this transistor 3 is controlled by electronics 4 which will now be described.
- This electronics 4 includes a management unit 5, which manages the gate voltage of transistor 5, so to control the feeding sequence of winding 2 according to the different operating phases of the starter (call supply, hold-open) ignition, automatic starter stop after starting the heat engine, etc.).
- This unit 5 provides also different functions, such as protection thermal starter, restart protection when the engine is running, etc.
- This management unit 5 receives different information on the operation of starter D. It is also connected to a supply line L at the vehicle battery voltage, controlled by key contact 6.
- the signal "a" at the output of this management unit 5 is transmitted to means 7 for controlling the blocking of transistor 3, which generates the voltage injected on the gate of transistor 3.
- These means 7 control by example transistor 3 so that it works in switch or in sequenced supply or progressive.
- This signal “a” is for example of the signal type binary illustrated in Figure 2a, whose level 1 corresponds to the command to block transistor 3 and whose level 0 controls its opening. The signal “a” goes to level 1 when the key is closed contact.
- This signal "a” is also transmitted to a unit timer 8.
- the signal "e” at the output of this unit of timer 8 is delayed by a duration Tc relative to the signal "a" ( Figure 2b).
- This signal "f” is generated by a unit 10 which detects the open or closed state of power contact 1 depending, for example, on the measurement of the aux voltage terminals of the starter D, or of the measurement of the intensity that flows through it.
- the signal "f" can be generated in function of a speed measurement of either the motor electric starter or motor thermal.
- the unit 10 advantageously comprises a circuit for smoothing the input signal, so as not to trigger unwanted electronic protection under the effect of the power contact that could intervene, for example, following contact bounces or to switching noise on the electric motor.
- the signal "g" at the output of unit 9 is a signal of the type shown in Figure 2d, which is 1 when power contact 1 is not closed at the end of the timer by unit 8, i.e. when the signal "f” is 0 when the signal "e” goes to his level 1.
- This signal "g" is transmitted with the signal "a” to means 7 for controlling the blocking of the transistor 3.
- the signal "b” ( Figure 2e) generated by these means 7 controls the blocking of transistor 3 when the signal "a” is at level 1 and the signal "g" is at its level 0.
- the delay time Tc is chosen small enough so that there is no damage irreversible of transistor 3 or winding 2 if the power contact 1 does not close, but nevertheless sufficient to propel the starter pinion in working position.
- the means 7 for controlling the grid of the transistor consist of a resistor R1.
- Unit 8 consists of a circuit standard timer which goes to level 1 after a given delay time Tc, when it receives a level 1 signal.
- the decision-making unit 9 includes a "NAND" gate 11, a first input e 1 of which is connected to the output of the timing unit 8 and a second input of which e 2 is connected to the collector of a bipolar switching transistor T This collector is charged by a resistor R2 connected to a supply terminal at the battery voltage.
- the emitter of this transistor T is connected to the mass.
- the output s of this door 11 is connected to the gate of transistor 3, via a diode 12, which is blocking from said outlet s towards the grid.
- the transistor T In the absence of a positive signal on its base (signal "f" at level 0), the transistor T is not conductive and the second entry of the NAND gate is at level 1.
- the output of logic gate 11 is then at level 0 when the signal "e" goes to level 1 at the end time delay.
- the gate of transistor 3 is then at a voltage close to 0.
- the inrush current in said transistor 3 and in winding 2 is reduced to a negligible value, which makes the situation safe from thermal point of view.
- the diode 12 makes it possible to avoid, in these cases, any influence on the command generated by unit 5.
- the gate voltage of transistor 3 is then directly controlled by the level of signal "a" at the output of the unit management 5.
- the unit 10 illustrated in FIG. 3 allows the times to calibrate and smooth the voltage on the terminal positive of the electric motor.
- Zener diode 13 whose anode is connected to ground and whose cathode is connected, by through a resistor R3, at the base of the transistor T.
- the cathode of this diode 13 is also connected, via a resistor R4, at one end a capacitor 14, the other end of which is connected to the mass. At their common end, the capacitor 14 and resistance R4 are connected to a point between contact 1 and the starter D, via a diode 15.
- Resistor R4 limits the current in this diode 13 in case of overvoltage.
- Capacitor 14 eliminates unwanted effects micro-cuts and parasites. Diode 15 avoids quick discharge of capacitor 14 in starter D during micro-cuts.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor And Converter Starters (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Relay Circuits (AREA)
Description
La présente invention est relative aux procédés et aux dispositifs pour la commande d'un contacteur de démarreur de véhicule automobile.The present invention relates to methods and to devices for controlling a contactor motor vehicle starter.
Classiquement, l'alimentation d'un démarreur de véhicule automobile est commandée par un contacteur de puissance à bobinage, piloté par une électronique.Conventionally, the supply of a starter motor vehicle is controlled by a contactor winding power, controlled by electronics.
Un tel contacteur a pour rôle, d'une part, de constituer un actionneur linéaire pour déplacer un pignon lanceur le long d'un arbre moteur d'une position de repos à une position d'engrènement avec une couronne dentée située sous un volant moteur et, d'autre part, de constituer un relais de puissance dont le contact permet l'alimentation du moteur électrique du démarreur, ledit moteur entraínant en rotation le pignon lanceur.The role of such a contactor is, on the one hand, to constitute a linear actuator to move a pinion launcher along a motor shaft from a rest position at a meshing position with a ring gear located under a flywheel and, on the other hand, constitute a power relay whose contact allows the starter electric motor supply, said motor driving the starter pinion in rotation.
Pour un exemple de structure de démarreur automobile, on pourra par exemple se référer à US 5,345,901.For an example of starter structure automobile, we could for example refer to US 5,345,901.
L'électronique de commande comporte généralement
un interrupteur du type transistor qui commande le passage
d'un courant dans le bobinage du contacteur. La commande
est tout ou rien ou progressive, ainsi que cela a été
proposé dans la demande de brevet FR 2 679 717.Control electronics generally include
a transistor type switch which controls the passage
current in the contactor winding. The command
is all or nothing or progressive as it has been
proposed in
Dans un premier temps, le bobinage est alimenté en état d'appel par un fort courant, de façon à développer les forces mécaniques nécessaires pour propulser le pignon de lanceur dans la couronne de démarrage du moteur thermique.Initially, the winding is supplied with state of call by a strong current, so as to develop the mechanical forces necessary to propel the pinion starter in the engine starter ring thermal.
Dans un deuxième temps, lorsque le contacteur comporte deux enroulements, dont un enroulement d'appel et un enroulement de maintien, l'alimentation passe en fin de période précédente à un niveau de courant réduit suffisant pour maintenir le contacteur de puissance fermé.Secondly, when the contactor has two windings, including a call winding and a holding winding, the supply passes at the end of previous period at sufficient reduced current level to keep the power contactor closed.
En état d'appel, du fait des courants élevés, le bobinage du contacteur (qu'il soit à un ou plusieurs enroulements) et le transistor de commande sont le siège de dégagements de chaleur importants.On call, due to the high currents, the contactor winding (whether it is one or more windings) and the control transistor are the seat significant heat release.
Ce mode de fonctionnement est normalement très bref, de l'ordre de quelques dixièmes de secondes, ce qui empêche la détérioration par effet thermique des composants cités.This operating mode is normally very in short, on the order of a few tenths of a second, this which prevents deterioration by thermal effect of components cited.
Toutefois, en cas de dysfonctionnement de l'interrupteur de puissance, la durée de fonctionnement en mode d'appel est aussi longue que la durée de maintien de la clé de contact en position de démarrage.However, in the event of a malfunction of the power switch, the operating time in call mode is as long as the duration of keeping the ignition key in the start position.
Cette durée est laissée à l'appréciation du conducteur du véhicule ; en pratique, elle peut parfois atteindre plusieurs dizaines de secondes, ce qui est largement suffisant pour détériorer le transistor ou le bobinage de contacteur.This duration is left to the discretion of the vehicle driver; in practice, it can sometimes reach several tens of seconds, which is more than enough to damage the transistor or contactor winding.
Or, les causes de non fermeture de l'interrupteur de puissance peuvent être nombreuses : outre les causes mécaniques, elles peuvent également être liées à la présence de corps non conducteurs à la surface des contacts : poussières, particules isolantes, givrage, oxydation,...However, the causes of non-closure of the power switch can be numerous: in addition to the mechanical causes, they can also be related to the presence of non-conductive bodies at the contact surface: dust, insulating particles, icing, oxidation, ...
Un but de l'invention est donc de proposer un procédé et un dispositif de commande qui permettent d'éviter la détérioration du transistor ou du bobinage du contacteur lorsque du fait d'une défaillance du contacteur la durée de fonctionnement en état d'appel est trop importante.An object of the invention is therefore to propose a method and control device which allow avoid deterioration of the transistor or the winding of the contactor when due to a fault in the contactor operating time in call state is too important.
On connaít déjà par US 4,345,554 une électronique de commande d'un démarreur qui désactive l'alimentation de celui-ci lorsque le moteur n'a pas démarré à l'issue d'un temps prédéterminé. Toutefois, cette commande n'est pas pleinement satisfaisante. Elle peut amener à couper l'alimentation du démarreur alors que le contact de puissance est effectivement fermé.We already know by US 4,345,554 a starter control electronics that deactivate power to it when the engine hasn't started after a predetermined time. However, this order is not fully satisfactory. She may cause the starter power to be cut off then that the power contact is effectively closed.
Selon l'invention, on propose un dispositif pour la commande d'un contacteur de démarreur de véhicule automobile, ledit contacteur comportant au moins un enroulement et un contact de puissance dont la fermeture permet l'alimentation du démarreur, ledit dispositif comportant des moyens pour mesurer un signal dont des évolutions sont caractéristiques de l'état ouvert ou fermé du contact de puissance et pour traiter ce signal pour détecter l'état ouvert ou fermé du contact de puissance, ainsi que des moyens pour couper ou réduire l'alimentation d'appel du ou des enroulements lorsque le contact de puissance est toujours ouvert à l'issue d'un temps prédéterminé par rapport au début de l'alimentation d'appel, caractérisé en ce que le signal mesuré est la tension aux bornes du démarreur, ou l'intensité qui circule dans celui-ci, ou encore un signal caractéristique de la vitesse de rotation du démarreur ou du moteur thermique et en ce que les moyens de détection de l'état ouvert ou fermé du contact de puissance comportent des moyens de lissage de ce signal mesuré avant son traitement pour la détection de l'état ouvert ou fermé du contact de puissance.According to the invention, a device is proposed for the control of a vehicle starter switch automotive, said contactor comprising at least one winding and a power contact whose closure allows the starter to be supplied, said device comprising means for measuring a signal including evolutions are characteristic of the open state or closed the power contact and to process this signal to detect the open or closed state of the contact power, as well as means to cut or reduce the call supply of the winding (s) when the power contact is always open after a predetermined time from the start of the call supply, characterized in that the signal measured is the voltage across the starter, or the intensity that flows in it, or even a signal characteristic of the speed of rotation of the starter or heat engine and in that the means detection of the open or closed state of the contact power include means for smoothing this signal measured before processing for condition detection open or closed of the power contact.
Ce dispositif est avantageusement complété par les différentes caractéristiques suivantes prises seules ou selon toutes leurs combinaisons techniquement possibles :
- des moyens pour générer un signal de commande du démarrage, notamment lors de la fermeture de la clé de contact, un élément pour la régulation du courant d'alimentation du ou des enroulements, des moyens pour la commande de cet élément de régulation, ces moyens recevant le signal de commande de démarrage, les moyens pour couper ou réduire l'alimentation d'appel comportant des moyens de temporisation auxquels le signal de commande de démarrage est transmis, ainsi que des moyens décisionnels qui reçoivent en entrée les signaux en sortie d'une part des moyens de temporisation et d'autre part des moyens de détection de l'état ouvert ou fermé du contact de puissance, ces moyens décisionnels émettant en sortie un signal qui indique aux moyens de commande de l'élément de régulation que le contact de puissance est ouvert à l'issue de la temporisation ;
- les moyens décisionnels comportent une porte logique dont une entrée reçoit le signal en sortie des moyens de temporisation et dont une autre entrée reçoit un signal correspondant au signal en sortie des moyens de détection de l'état ouvert ou fermé du contact de puissance, la sortie de ladite porte logique étant reliée à la sortie des moyens de commande de l'élément de régulation par l'intermédiaire d'une diode
- la porte logique est une porte NON ET ;
- la deuxième entrée de la porte logique est reliée à une borne d'alimentation par l'intermédiaire de moyens principalement résistifs, ainsi qu'à une extrémité d'un interrupteur dont l'autre extrémité est reliée à la masse et qui est commandé par le signal en sortie des moyens de détection de l'état ouvert ou fermé du contact de puissance ;
- les moyens de détection comportent une diode Zener dont la tension de cathode est le signal qui commande l'interrupteur, la cathode de ladite diode étant reliée à un point entre le contact de puissance et le démarreur, son anode étant reliée à la masse ;
- les moyens de détection comportent en outre des moyens principalement résistifs pour la limitation du courant dans ladite diode en cas de surtension ;
- means for generating a start control signal, in particular when closing the ignition key, an element for regulating the supply current of the winding (s), means for controlling this regulating element, these means receiving the start control signal, the means for cutting off or reducing the call supply comprising delay means to which the start control signal is transmitted, as well as decision-making means which receive the input signals from the output on the one hand the time delay means and on the other hand means for detecting the open or closed state of the power contact, these decision-making means outputting a signal which indicates to the control means of the regulating element that the contact power is opened at the end of the time delay;
- the decision-making means include a logic gate, one input of which receives the signal at the output of the delay means and the other of which receives a signal corresponding to the signal of the output of the means for detecting the open or closed state of the power contact, the output of said logic gate being connected to the output of the control means of the regulating element by means of a diode
- the logic gate is a NAND gate;
- the second input of the logic gate is connected to a supply terminal by means of mainly resistive means, as well as to one end of a switch whose other end is connected to ground and which is controlled by the signal at the output of the means for detecting the open or closed state of the power contact;
- the detection means comprise a Zener diode, the cathode voltage of which is the signal which controls the switch, the cathode of said diode being connected to a point between the power contact and the starter, its anode being connected to ground;
- the detection means also comprise mainly resistive means for limiting the current in said diode in the event of an overvoltage;
D'autres caractéristiques et avantages de l'invention ressortiront encore de la description qui suit. Cette description est purement illustrative et non limitative. Elle doit être lue en regard des dessins annexés sur lesquels :
- la figure 1 est un schéma illustrant un mode de réalisation possible pour le dispositif conforme à l'invention ;
- les figures 2a à 2e illustrent une séquence de commande possible pour le dispositif de la figure 1 ;
- la figure 3 est une représentation schématique semblable à celle de la figure 1 et illustre une autre variante possible pour le dispositif conforme à l'invention.
- Figure 1 is a diagram illustrating a possible embodiment for the device according to the invention;
- Figures 2a to 2e illustrate a possible control sequence for the device of Figure 1;
- Figure 3 is a schematic representation similar to that of Figure 1 and illustrates another possible variant for the device according to the invention.
Sur la figure 1, on a représenté un moteur
électrique D qui constitue le démarreur du véhicule et
dont l'alimentation est commandée par un contact de
puissance 1.In Figure 1, a motor is shown
electric D which constitutes the starter of the vehicle and
whose supply is controlled by a contact of
Ce moteur électrique D est monté entre une borne B+ à la tension d'alimentation de la batterie et la masse.This electric motor D is mounted between a terminal B + at the supply voltage of the battery and earth.
Le contact 1 est interposé entre la borne
d'alimentation B+ et le démarreur D.
Il est commandé par un enroulement 2 monté entre
la borne d'alimentation B+ et la masse. L'alimentation de
l'enroulement 2 est elle-même commandée par un
interrupteur 3 interposé entre l'enroulement 2 et la
masse.It is controlled by a winding 2 mounted between the supply terminal B + and the ground. The supply of the
Dans l'exemple ici décrit, l'interrupteur 3 est un
transistor de type MOSFET, dont le drain est relié à
l'enroulement 2 et dont la source est reliée à la masse.In the example described here,
La tension de grille de ce transistor 3 est
commandée par une électronique 4 qui va maintenant être
décrite.The gate voltage of this
Cette électronique 4 comporte une unité de gestion
5, qui gère la tension de grille du transistor 5, de façon
à contrôler la séquence d'alimentation de l'enroulement 2
selon les différentes phases de fonctionnement du
démarreur (alimentation d'appel, maintien de la fermeture
du contact, arrêt automatique du démarreur après le
démarrage du moteur thermique, etc.). Cette unité 5 assure
également différentes fonctions, telles que la protection
thermique du démarreur, la protection anti-redémarrage
lorsque le moteur thermique fonctionne, etc.This
Cette unité de gestion 5 reçoit différentes
informations sur le fonctionnement du démarreur D. Elle
est également reliée à une ligne L d'alimentation à la
tension de la batterie du véhicule, commandée par la clé
de contact 6.This management unit 5 receives different
information on the operation of starter D. It
is also connected to a supply line L at the
vehicle battery voltage, controlled by
Le signal "a" en sortie de cette unité de gestion
5 est transmis à des moyens 7 pour la commande du blocage
du transistor 3, qui génère la tension injectée sur la
grille du transistor 3. Ces moyens 7 commandent par
exemple le transistor 3 de façon qu'il fonctionne en
commutateur ou encore en alimentation séquencée ou
progressive.The signal "a" at the output of this management unit
5 is transmitted to means 7 for controlling the blocking
of
Ce signal "a" est par exemple du type du signal
binaire illustré sur la figure 2a, dont le niveau 1
correspond à la commande du blocage du transistor 3 et
dont le niveau 0 commande son ouverture. Le signal "a"
passe à son niveau 1 lors de la fermeture de la clé de
contact.This signal "a" is for example of the signal type
binary illustrated in Figure 2a, whose
Ce signal "a" est également transmis à une unité
de temporisation 8.This signal "a" is also transmitted to a
Le signal "e" en sortie de cette unité de
temporisation 8 est retardé d'une durée Tc par rapport au
signal "a" (figure 2b).The signal "e" at the output of this unit of
Il est transmis à une unité décisionnelle 9 en
même temps qu'un signal "f" (figure 2c), qui est un signal
binaire représentatif de l'état fermé ou ouvert du contact
1.It is transmitted to a decision-
Ce signal "f" est généré par une unité 10 qui
détecte l'état ouvert ou fermé du contact de puissance 1
en fonction, par exemple, de la mesure de la tension aux
bornes du démarreur D, ou encore de la mesure de
l'intensité qui circule dans celui-ci.This signal "f" is generated by a
En variante, le signal "f" peut être généré en fonction d'une mesure de la vitesse soit du moteur électrique que constitue le démarreur, soit du moteur thermique.As a variant, the signal "f" can be generated in function of a speed measurement of either the motor electric starter or motor thermal.
Dans l'exemple illustré sur les figures, on a
représenté en trait plein sur la figure 2c un signal
binaire qui correspond au signal "f" lorsque le contact de
puissance 1 se ferme immédiatement après la commande du
démarrage par le signal "a", ainsi qu'en traits
interrompus le signal "f" lorsque le contact de puissance
ne se ferme pas pendant la durée de la temporisation.In the example illustrated in the figures, we have
shown in solid line in Figure 2c a signal
binary which corresponds to the signal "f" when the contact of
L'unité 10 comporte avantageusement un circuit de
lissage du signal d'entrée, de façon à ne pas déclencher
intempestivement la protection électronique sous l'effet
de microcoupure du contact de puissance qui pourrait
intervenir, par exemple, suite à des rebonds du contact ou
à des parasites de commutation sur le moteur électrique.The
Le signal "g" en sortie de l'unité 9 est un signal
du type de celui illustré sur la figure 2d, qui vaut 1
lorsque le contact de puissance 1 n'est pas fermé à
l'issue de la temporisation par l'unité 8, c'est-à-dire
lorsque le signal "f" vaut 0 lorsque le signal "e" passe à
son niveau 1.The signal "g" at the output of
Ce signal "g" est transmis avec le signal "a" aux
moyens 7 pour la commande du blocage du transistor 3.This signal "g" is transmitted with the signal "a" to
means 7 for controlling the blocking of the
Le signal "b" (figure 2e) généré par ces moyens 7
commande le blocage du transistor 3 lorsque le signal "a"
est à son niveau 1 et que le signal "g" est à son niveau
0.The signal "b" (Figure 2e) generated by these means 7
controls the blocking of
Par contre, dès que le signal "g" passe à son
niveau 1, c'est-à-dire lorsque l'on détecte l'ouverture du
contact 1 à l'issue du temps de temporisation, le signal
"b" passe au niveau 0 et le transistor 3 est ouvert.On the other hand, as soon as the signal "g" passes to its
La durée de temporisation Tc est choisie
suffisamment petite pour qu'il n'y ait aucun endommagement
irréversible du transistor 3 ou de l'enroulement 2 si le
contact de puissance 1 ne se ferme pas, mais néanmoins
suffisante pour assurer la propulsion du pignon de lanceur
en position de travail.The delay time Tc is chosen
small enough so that there is no damage
irreversible of
En pratique, des valeurs comprises entre 0,5 et 10 secondes conviennent.In practice, values between 0.5 and 10 seconds are fine.
On se réfère maintenant à la figure 3.We now refer to Figure 3.
Les différents moyens du dispositif de la figure 1 y ont été détaillés.The different means of the device of Figure 1 were detailed there.
Les moyens 7 pour la commande de la grille du
transistor sont constitués par une résistance R1.The
L'unité 8 est constituée par un circuit de
temporisation standard qui passe au niveau 1 après une
durée de temporisation Tc donnée, lorsqu'il reçoit un
signal de niveau 1.
L'unité décisionnelle 9 comporte une porte "NON
ET" 11 dont une première entrée e1 est reliée à la sortie
de l'unité de temporisation 8 et dont une deuxième entrée
e2 est reliée au collecteur d'un transistor bipolaire de
commutation T. Ce collecteur est chargé par une résistance
R2 reliée à une borne d'alimentation à la tension de la
batterie.The decision-
L'émetteur de ce transistor T est relié à la masse.The emitter of this transistor T is connected to the mass.
La sortie s de cette porte 11 est reliée à la
grille du transistor 3, par l'intermédiaire d'une diode
12, qui est blocante de ladite sortie s vers la grille.The output s of this
En l'absence de signal positif sur sa base (signal
"f" au niveau 0), le transistor T n'est pas conducteur et
la deuxième entrée de la porte NON ET est au niveau 1.In the absence of a positive signal on its base (signal
"f" at level 0), the transistor T is not conductive and
the second entry of the NAND gate is at
La sortie de la porte logique 11 est alors au
niveau 0 lorsque le signal "e" passe au niveau 1 à l'issue
de la temporisation. La grille du transistor 3 est alors à
une tension voisine de 0. Le courant d'appel dans ledit
transistor 3 et dans l'enroulement 2 est réduit à une
valeur négligeable, qui rend la situation sans risque du
point de vue thermique.The output of
Dans tous les autres états des signaux "e" et "f"
en entrée de la porte 11, le signal "g" en sortie de
ladite porte 11 est au niveau 1.In all other states of the signals "e" and "f"
at the input of
La diode 12 permet d'éviter, dans ces cas, toute
influence sur la commande générée par l'unité 5. La
tension de grille du transistor 3 est alors directement
commandée par le niveau du signal "a" en sortie de l'unité
de gestion 5.The
L'unité 10 illustrée sur la figure 3 permet à la
fois de calibrer et de lisser la tension sur la borne
positive du moteur électrique.The
Elle comporte une diode Zener 13 dont l'anode est
reliée à la masse et dont la cathode est reliée, par
l'intermédiaire d'une résistance R3, à la base du
transistor T.It includes a
La cathode de cette diode 13 est également reliée,
par l'intermédiaire d'une résistance R4, à une extrémité
d'un condensateur 14, dont l'autre extrémité est reliée à
la masse. A leur extrémité commune, le condensateur 14 et
la résistance R4 sont reliés à un point entre le contact 1
et le démarreur D, par l'intermédiaire d'une diode 15.The cathode of this
Lorsque le contact 1 est fermé, le signal "f" en
sortie de l'unité 10 est à la tension Zener de la diode
13, la tension aux bornes du démarreur D, sujette à des
effets selfiques, étant limitée par ladite diode Zener 13.When
La résistance R4 limite le courant dans cette
diode 13 en cas de surtension.Resistor R4 limits the current in this
Le condensateur 14 élimine les effets indésirables
des microcoupures et parasites. La diode 15 évite une
décharge rapide du condensateur 14 dans le démarreur D
pendant les microcoupures.
Lorsque le contact 1 est ouvert, le signal "f" en
sortie de cette unité 10 se trouve à son niveau 0, puisque
la tension d'entrée est nulle.When
Le dispositif qui vient d'être décrit présente de nombreux avantages.The device which has just been described presents many advantages.
Il permet de réduire le coût de l'électronique de
commande du démarreur, puisque les contraintes thermiques
sur le transistor 3 et l'enroulement 2 sont réduites.It reduces the cost of electronics by
starter control, since thermal stresses
on
Il en résulte en outre une plus grande facilité d'implantation de l'électronique de commande du démarreur.It also results in greater ease installation of the starter control electronics.
Par ailleurs, la fiabilité de la commande est améliorée.Furthermore, the reliability of the control is improved.
Claims (7)
- Apparatus for controlling a contactor of a motor vehicle starter, said contactor including at least one winding (2) and a power contact (1) which, on being closed, serves to supply power to the starter, said apparatus including means (10) for measuring a signal having variations that are characteristic of the open or closed state of the power contact, and for processing the signal so as to detect the open or closed state of the power contact (1), and means (8, 9) for interrupting or reducing the start power supply to the winding(s) (2) whenever the power contact (1) is still open after a predetermined time delay from the beginning of start power supply, the apparatus being characterized in that the measured signal is the voltage across the terminals of the starter (D), and in that the means (10) for detecting the open or closed state of the power contact include means (14) for smoothing the measured signal before it is processed to detect the open or closed state of the power contact.
- Apparatus according to claim 1, characterized in that it includes means (5) for generating a start control signal, in particular when the vehicle key (6) is closed, a regulator element (3) for regulating the power supply current to the winding(s) (2), control means (7) for controlling said regulator element (2), said control means (7) receiving the start control signal, the means for interrupting or reducing the start power supply including delay means (8) to which the start control signal is applied, and decision means (9) which receive as inputs the output signals firstly from the delay means (8) and secondly from the means (10) for detecting the open or closed state of the power contact (1), said decision means (9) issuing an output signal that informs the control means (7) for controlling the regulator element (3) that the power contact (1) is open at the end of the time delay.
- Apparatus according to claim 2, characterized in that the decision means (9) comprise a logic gate (11) having one input receiving the output signal from the delay means (8) and another input receiving a signal corresponding to the output signal from the means (10) for detecting the open or closed state of the power contact, the output from said logic gate (11) being connected by means of a diode (12) to the output of said control means (10) for controlling the regulator element (3).
- Apparatus according to claim 3, characterized in that the logic gate (11) is a NAND gate.
- Apparatus accordion to claim 4, characterized in that the second input of the logic gate (11) is connected to a power supply terminal via means (R2) that are mainly resistive, and also to one end of a switch (T) whose other end is connected to ground and which is controlled by the output signal from the means (10) for detecting the open or closed state of the power contact.
- Apparatus according to claim 5, characterized in that the detector means comprise a zener diode (13) whose cathode voltage constitutes the signal controlling the switch, the cathode of said diode being connected to a point between the power contact (1) and the starter (D), its anode being connected to ground.
- Apparatus according to claim 6, characterized in that the detector means further include mainly resistive means (R4) for limiting the current flowing through said diode (13) in the event of excess voltage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9603509 | 1996-03-21 | ||
FR9603509A FR2746449B1 (en) | 1996-03-21 | 1996-03-21 | METHOD AND DEVICE FOR CONTROLLING A POWER CONTACTOR OF A MOTOR VEHICLE STARTER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0796992A1 EP0796992A1 (en) | 1997-09-24 |
EP0796992B1 true EP0796992B1 (en) | 2003-01-15 |
Family
ID=9490383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97400625A Expired - Lifetime EP0796992B1 (en) | 1996-03-21 | 1997-03-20 | Method and device for controlling a driving contactor for a vehicle starter motor |
Country Status (6)
Country | Link |
---|---|
US (1) | US5831804A (en) |
EP (1) | EP0796992B1 (en) |
JP (2) | JP4175677B2 (en) |
DE (1) | DE69718366T2 (en) |
ES (1) | ES2191155T3 (en) |
FR (1) | FR2746449B1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6024065A (en) * | 1994-07-05 | 2000-02-15 | Chrysler Corporation | Starter motor control circuit and method |
FR2760910B1 (en) * | 1997-03-14 | 1999-05-28 | Valeo Equip Electr Moteur | DEVICE FOR CONTROLLING A MOTOR VEHICLE STARTER CONTACTOR |
FR2771780B1 (en) * | 1997-12-03 | 2000-02-18 | Valeo Equip Electr Moteur | METHOD AND DEVICE FOR CONTROLLING THE POWER OF THE WINDING OF A MOTOR VEHICLE STARTER CONTACTOR |
FR2772085B1 (en) * | 1997-12-10 | 2000-02-25 | Valeo Equip Electr Moteur | IMPROVEMENT IN DEVICES FOR CONTROLLING A MOTOR VEHICLE STARTER |
FR2783371B1 (en) * | 1998-09-16 | 2000-12-01 | Valeo Equip Electr Moteur | DEVICE FOR CONTROLLING THE POWER SUPPLY OF A VEHICLE STARTER ELECTRIC MOTOR AND STARTER COMPRISING SUCH A DEVICE |
DE10034779A1 (en) * | 2000-07-18 | 2002-01-31 | Bosch Gmbh Robert | Control device for starters of internal combustion engines |
JP3831191B2 (en) * | 2000-10-13 | 2006-10-11 | 株式会社東海理化電機製作所 | Vehicle engine starter and engine start method |
FR2839344B1 (en) * | 2002-03-29 | 2005-12-02 | Valeo Equip Electr Moteur | ELECTRONIC CONTROL CIRCUIT FOR A MOTOR VEHICLE STARTER CONTACTOR EQUIPPED WITH CORRECTING MEANS IN THE EVENT OF NON-CLOSING OF THE POWER CONTACT |
US6806585B2 (en) * | 2002-12-04 | 2004-10-19 | Valeo Mando Electrical Systems Korea Limited | Stabilization circuit of magnet switch for starter |
JP3861876B2 (en) * | 2003-12-22 | 2006-12-27 | 日産自動車株式会社 | ENGINE START CONTROL DEVICE AND METHOD |
US7084588B2 (en) * | 2004-07-30 | 2006-08-01 | Ballard Power Systems Corporation | Method, apparatus and article for motor control voltage dropout detection |
US7728704B2 (en) | 2007-06-07 | 2010-06-01 | Trombetta, Llc | Method for reducing continuous charge |
DE102009027828A1 (en) * | 2009-07-20 | 2011-01-27 | Robert Bosch Gmbh | Control and method of a starter motor for a starting device |
US9434261B2 (en) * | 2011-10-17 | 2016-09-06 | Robert Bosch Gmbh | Welded contactor checking systems and methods |
JP5505449B2 (en) | 2012-04-06 | 2014-05-28 | 株式会社デンソー | Control device for multi-phase rotating machine |
CN105869576A (en) * | 2015-01-24 | 2016-08-17 | 深圳富泰宏精密工业有限公司 | Device and method for improvement of display stability |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4345554A (en) * | 1979-11-19 | 1982-08-24 | Hildreth Donald M | Vehicle engine remote starter control and protective system |
FR2679717B1 (en) * | 1991-07-23 | 1994-12-23 | Valeo Equip Electr Moteur | DEVICE FOR CONTROLLING A STARTER OF A MOTOR VEHICLE. |
US5345901A (en) * | 1993-07-26 | 1994-09-13 | Carrier Corporation | Starter motor protection system |
US5601058A (en) * | 1995-03-06 | 1997-02-11 | The United States Of America As Represented By The Department Of Energy | Starting apparatus for internal combustion engines |
-
1996
- 1996-03-21 FR FR9603509A patent/FR2746449B1/en not_active Expired - Fee Related
-
1997
- 1997-03-20 US US08/822,358 patent/US5831804A/en not_active Expired - Lifetime
- 1997-03-20 ES ES97400625T patent/ES2191155T3/en not_active Expired - Lifetime
- 1997-03-20 DE DE69718366T patent/DE69718366T2/en not_active Expired - Lifetime
- 1997-03-20 EP EP97400625A patent/EP0796992B1/en not_active Expired - Lifetime
- 1997-03-21 JP JP06763197A patent/JP4175677B2/en not_active Expired - Lifetime
-
2007
- 2007-10-03 JP JP2007260215A patent/JP4613197B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5831804A (en) | 1998-11-03 |
FR2746449A1 (en) | 1997-09-26 |
JP2008019872A (en) | 2008-01-31 |
ES2191155T3 (en) | 2003-09-01 |
JP4613197B2 (en) | 2011-01-12 |
DE69718366D1 (en) | 2003-02-20 |
EP0796992A1 (en) | 1997-09-24 |
JP4175677B2 (en) | 2008-11-05 |
DE69718366T2 (en) | 2003-09-04 |
JPH1026068A (en) | 1998-01-27 |
FR2746449B1 (en) | 1998-06-12 |
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