FR2518839A1 - ELECTRIC POWER SUPPLY SYSTEM FOR MOTOR VEHICLES - Google Patents

ELECTRIC POWER SUPPLY SYSTEM FOR MOTOR VEHICLES Download PDF

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Publication number
FR2518839A1
FR2518839A1 FR8218023A FR8218023A FR2518839A1 FR 2518839 A1 FR2518839 A1 FR 2518839A1 FR 8218023 A FR8218023 A FR 8218023A FR 8218023 A FR8218023 A FR 8218023A FR 2518839 A1 FR2518839 A1 FR 2518839A1
Authority
FR
France
Prior art keywords
battery
speed
installation
transmission
rotation
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.)
Pending
Application number
FR8218023A
Other languages
French (fr)
Inventor
Manfred Frister
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2518839A1 publication Critical patent/FR2518839A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
    • H02J7/1476—Regulation of the charging current or voltage otherwise than by variation of field by mechanical action on the generator

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Transmission Device (AREA)

Abstract

A power supply device for the on-board network of a motor vehicle having a generator which can be driven by an internal-combustion engine and supplies the load current for a starter battery, and having a transmission which is arranged between the internal-combustion engine and the generator and has at least two gears and a control device which is used for changing gear in the transmission and operates as a function of the rotation speed of the internal-combustion engine and/or as a function of the charge state of the battery.

Description

" Installation d'alimentation en courant électrique
pour véhicules automobiles t'. "Electric power supply installation
for motor vehicles t '.

La présente invention concerne une installation d'alimentation en courant électrique du réseau de bord d'un véhicule automobile entraîné par un moteur à combustion interne avec vitesse de rotation fortement variable, installation comprenant une gEnératrice entratnée par le moteur à combustion et fournissant'le courant de charge pour une batterie de démarreur. The present invention relates to an installation for supplying electrical current to the on-board network of a motor vehicle driven by an internal combustion engine with highly variable speed of rotation, installation comprising a generator driven by the combustion engine and supplying the current charging for a starter battery.

Le rapport entre la vitesse de rotation maximale et la vitesse de rotation de marche à vide des moteurs a combustion interne de véhicules auto- mobiles est supérieur à 5/1 et peut atteindre jus qu2à environ 15/1. En raison de cette grande diffe- rence entre vitesse de rotation maximale et vitesse de rotation à vide, le montage avec des agrégats entratnds directement par le moteur à combustion est défavorable. On connatt, par conséquent, des dispositifs destinés à être connectés entre le moteur et l'agrégat entraîné et qui servent à réduire la vitesse de rotation de l'agrégat. The ratio between the maximum speed and the idling speed of internal combustion engines of motor vehicles is more than 5/1 and can reach up to about 15/1. Because of this large difference between maximum speed and no-load speed, assembly with aggregates fed directly by the combustion engine is unfavorable. There are, therefore, known devices intended to be connected between the motor and the driven aggregate and which serve to reduce the rotation speed of the aggregate.

On connait déjà des mécanismes variables par échelons ou en continu, dans lesquels, comme grandeur de commande pour la modification du rapport de transmission, est introduite la vitesse de rotation du moteur, la commutation du rapport de transmission étant assurée,par exemple à l'aide d'un contacteur mécanique-à force centrifuge. Variable mechanisms are already known by steps or continuously, in which, as a control variable for the modification of the transmission ratio, the speed of rotation of the motor is introduced, the switching of the transmission ratio being ensured, for example at using a mechanical-centrifugal contactor.

De telles installations à commande mecanique présentent l'inconvénient d'une hystérisis relativement grande, qui a pour conséquence que, lors d'une vitesse de rotation croissante, il se produit un point de déconnexion pour le mécanisme qui est différent du point lors d'une vitesse de rotation décroissante. Cela peut se révéler comme un inconvénient treks important, notamment lorsque la vitesse du véhicule automobile se situe au voisinage de l'un ou l'autre des deux points de commutation.Such mechanically controlled installations have the disadvantage of a relatively large hysterisis, which has the consequence that, at an increasing speed of rotation, there is a point of disconnection for the mechanism which is different from the point during a decreasing speed of rotation. This can prove to be a significant trekking disadvantage, especially when the speed of the motor vehicle is in the vicinity of one or the other of the two switching points.

ta présente invention a pour but de réa liser une installation de commande, d'efficacité satisfaisante, qui soit de constitution simple et présente une hystérésis réduite. Your present invention aims to achieve a control installation, satisfactory efficiency, which is simple in constitution and has reduced hysteresis.

Dans ce but, l'installation selon l'invention est caractérisée par une installation de commande servant à la commutation du mécanisme, qui agit en dépendance de la vitesse de rotation du moteur à combustion et/ou de l'état de charge de la batterie. To this end, the installation according to the invention is characterized by a control installation used for switching the mechanism, which acts in dependence on the rotation speed of the combustion engine and / or the state of charge of the battery. .

Dans le cas de moteurs à combustion interne fonctionnant à compression de mélange et allumage extérieur, il est possible de prélever, d'une manière simple, sur le dispositif d'allumage, un signal électrique synchrone de la vitesse de rotation. In the case of internal combustion engines operating with mixture compression and external ignition, it is possible to take, in a simple manner, from the ignition device, a synchronous electrical signal of the speed of rotation.

Pour la commutation du mécanisme en dépendance de lté- tat de charge de la batterie, différentes solutions exposées dans la suite peuvent être prévues confor dément à l'invention.For switching the mechanism in dependence on the state of charge of the battery, various solutions described below can be provided in accordance with the invention.

L'invention est expliquée ci-après à l'aide d'un exemple de réalisation, représenté en schéma à la figure 1, d'une installation d'alimentation en courant pour un véhicule automobile.  The invention is explained below using an embodiment, shown in diagram in Figure 1, of a current supply installation for a motor vehicle.

Les figures 2 à 7 montrent divers détails de cette installation. Figures 2 to 7 show various details of this installation.

L'installation représentée eomprend un moteur à combustion 1, un mecanisme 2 qui peut être commandé d'après la vitesse de rotation et également d'après l'état de charge, une generatrice 3, un ensemble électronique de commande 4 qui detecte l'état de charge de la batterie et affecte l'ordre de commande au mécanisme par sa sortie X, la batterie du véhicule 5, le moteur de démarreur 6f-l'installation d'allumage 7, des organes consommateurs 8 qui peuvent être connectés pendant la marche d'un véhicule, des organes consommateurs 9 qui peuvent entre connectés même à l'arret du véhicule, une lampe de contrale 10, un interrupteur d'allumage 11, une résistance 12 nécessaire pour constater l'état de charge de la batterie avec un contacteur de vérification 13.  The installation shown includes a combustion engine 1, a mechanism 2 which can be controlled according to the speed of rotation and also according to the state of charge, a generator 3, an electronic control unit 4 which detects the state of charge of the battery and assigns the order of control to the mechanism by its output X, the vehicle battery 5, the starter motor 6f-the ignition installation 7, consumer components 8 which can be connected during the running of a vehicle, consumer components 9 which can be connected even when the vehicle is stopped, a control lamp 10, an ignition switch 11, a resistor 12 necessary to ascertain the state of charge of the battery with a verification contactor 13.

Le fonctionnement de l'installation conforme à l'invention est expliqué par la figure 6. Dans le cas de l'exemple de réalisation représenté, il est. prévu un mécanisme de connexion 2 avec deux étages de transmission, qui présente, par exemple, un rapport de transmission 1/1,8 dans un premier étage, et un rapport de transmission 1/3 dans un second étage. The operation of the installation according to the invention is explained by Figure 6. In the case of the embodiment shown, it is. provided a connection mechanism 2 with two transmission stages, which has, for example, a transmission ratio 1 / 1.8 in a first stage, and a transmission ratio 1/3 in a second stage.

La figure 6 montre l'allure de variation de ltétat de charge de la batterie du véhicule 5 en fonction du temps de marche t0 Pour la représentation de la figure 6, il est admis que, à l'instant t = o la batterie est sensiblement pleinement chargée. La génératrice 3 est entratnéeS en dépen-dance de la vitesse de rotation du moteur 1, avec le rapport de transmission 1/1,8, à allure lente, jusqu'à ce que, au cours de la marche, soit atteint un état de charge déterminé de par exemple 60 o/o'.  FIG. 6 shows the rate of variation of the state of charge of the battery of the vehicle 5 as a function of the running time t0 For the representation of FIG. 6, it is accepted that, at time t = o the battery is substantially fully charged. The generator 3 is driven in dependence on the speed of rotation of the motor 1, with the transmission ratio 1 / 1.8, at slow speed, until, during the running, is reached a state of determined load of for example 60 o / o '.

A partir de cet état de charge minimal, le mécanisme dlentratnement est commandé de telle manière que, dans le cas de faibles vitesses de rotation, soit atteint lé rapport de transmission 1/3,0, et, dans le cas de vitesses de rotation élevées, soit atteint le rapport de transmission 1/1,8. From this minimum state of charge, the drive mechanism is controlled in such a way that, in the case of low rotational speeds, the transmission ratio 1 / 3.0 is reached, and, in the case of high rotational speeds , or reaches the transmission ratio 1 / 1.8.

On obtient ainsi que, à partir de llins- tant t, l'état de charge ne décroisse pas davantage suivant la courbe B, mais oscille avec une valeur-comprise entre 80 % et 50 %, à un niveau médian, suivant la courbe C. It is thus obtained that, from instant t, the state of charge does not decrease further along curve B, but oscillates with a value -between 80% and 50%, at a median level, along curve C .

Dans le cas dans lequel' le véhicule passe du trafic urbain au déplacement' sur routeS l'etat de charge varie suivant la'courbe A et le méca- nisme de connexion 2 peut alors être maintenu en permanence avec le rapport de transmission le plus faible 1/1,8. In the case where 'the vehicle switches from urban traffic to travel' on the road S the state of charge varies according to the 'curve A and the connection mechanism 2 can then be permanently maintained with the lowest transmission ratio 1 / 1.8.

Ce mode de fonctionnement, conforme à l'invention, procure l'avantage que, au total, est assuré un meilleur degré d'efficacité et, en consé- quence, une consommation d'énergie plus faible de l'ensemble de l'ins,tallati,on d'alimentation de courant. This operating mode, in accordance with the invention, provides the advantage that, in total, a better degree of efficiency is ensured and, consequently, a lower energy consumption of the entire ins , tallati, on power supply.

La figure 7 représente un plan détaillé des connexions des fonctions de commande indiquées aux figure 2 et 3.  FIG. 7 represents a detailed plan of the connections of the control functions indicated in FIGS. 2 and 3.

Claims (3)

R E V EN D I C A T I O N SR E V EN D I C A T I O N S 10) Installation d'alimentation de courant électrique pour le réseau de bord d'un véhicule automobile à vitesse de rotation fortement varaible, avec une génératrice, entraînée par le moteur, délivrant le courant de charge pour une batterie, avec uii mécanisme, incorporé entre le moteur et la gene- ratrice, et pourvu d1-au moins deux étages de transmission, installation caractérisée par une installation de commande pour la commutation de transmission du mécanisme, qui fonctionne en dépendance de la vitesse de rotation du moteur et/ou de état de charge de la batterie. 10) Installation of electric current supply for the on-board network of a motor vehicle with highly variable speed of rotation, with a generator, driven by the engine, delivering the charging current for a battery, with a mechanism incorporated between the engine and the generator, and provided with at least two stages of transmission, installation characterized by a control installation for switching the transmission of the mechanism, which operates in dependence on the speed of rotation of the motor and / or state charging the battery. 20) Installation suivant la revendication 1, caractérisée en ce que des signaux électriques analogiques de la vitesse de rotation et/ou de l'état de charge de la batterie sont traités dans un transistor de commande. 20) Installation according to claim 1, characterized in that analog electrical signals of the speed of rotation and / or of the state of charge of the battery are processed in a control transistor. 30) Installation suivant la revendication 2, caractérisée en ce que, pour état de charge de la batterie (5) situé entre 50 et 60 oh de sa capacité, se produit une commutation du mécanisme (2) d'un étage de transmission sur l'autre 30) Installation according to claim 2, characterized in that, for the state of charge of the battery (5) located between 50 and 60 ohms of its capacity, there is a switching of the mechanism (2) of a transmission stage on the 'other 4 ) Installation suivant la revendication 3, caractérisée en ce que le mécanisme (2) présente un premier étage de connexion avec un rapport de transmission d'environ 1/1,5 à 2, notamment 1/1,8, et un second étage de connexion avec un rapport de transmission d'environ 1/2,5 à 3,5, notamment 1/3 pour vitesse accrue.  4) Installation according to claim 3, characterized in that the mechanism (2) has a first connection stage with a transmission ratio of approximately 1 / 1.5 to 2, in particular 1 / 1.8, and a second stage connection with a transmission ratio of about 1 / 2.5 to 3.5, especially 1/3 for increased speed.
FR8218023A 1981-12-19 1982-10-27 ELECTRIC POWER SUPPLY SYSTEM FOR MOTOR VEHICLES Pending FR2518839A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813150446 DE3150446A1 (en) 1981-12-19 1981-12-19 Power supply for motor vehicles

Publications (1)

Publication Number Publication Date
FR2518839A1 true FR2518839A1 (en) 1983-06-24

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FR (1) FR2518839A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002667A1 (en) * 1987-09-05 1989-03-23 Robert Bosch Gmbh Generator installation
WO1994000910A1 (en) * 1992-06-30 1994-01-06 Ford Motor Company Limited Method and apparatus for operating a motor vehicle alternator
FR2923963A1 (en) * 2007-11-19 2009-05-22 Renault Sas SYSTEM FOR CONTROLLING AN ELECTRIC MACHINE ON BOARD A MOTOR VEHICLE.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4102150A1 (en) * 1991-01-25 1992-07-30 Audi Ag METHOD FOR CONTROLLING A GENERATOR
DE19534902B4 (en) * 1994-09-29 2005-02-10 Volkswagen Ag Charging system for a motor vehicle
DE19639826B4 (en) * 1995-10-14 2006-02-16 Volkswagen Ag Charging system for a motor vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933953A (en) * 1958-07-21 1960-04-26 Michael G Pasotti Speed control for automotive generators
GB2068660A (en) * 1979-12-29 1981-08-12 Honda Motor Co Ltd Controlling vehicle generator output
FR2485293A1 (en) * 1980-06-19 1981-12-24 Sev Marchal METHOD FOR CONTROLLING AN ALTERNATOR DRIVE CLUTCH, IN PARTICULAR FOR MOTOR VEHICLES, AND DEVICE FOR CARRYING OUT SAID METHOD
EP0094686A2 (en) * 1982-05-19 1983-11-23 Mitsubishi Denki Kabushiki Kaisha Charge control arrangement for vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2933953A (en) * 1958-07-21 1960-04-26 Michael G Pasotti Speed control for automotive generators
GB2068660A (en) * 1979-12-29 1981-08-12 Honda Motor Co Ltd Controlling vehicle generator output
FR2485293A1 (en) * 1980-06-19 1981-12-24 Sev Marchal METHOD FOR CONTROLLING AN ALTERNATOR DRIVE CLUTCH, IN PARTICULAR FOR MOTOR VEHICLES, AND DEVICE FOR CARRYING OUT SAID METHOD
EP0094686A2 (en) * 1982-05-19 1983-11-23 Mitsubishi Denki Kabushiki Kaisha Charge control arrangement for vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002667A1 (en) * 1987-09-05 1989-03-23 Robert Bosch Gmbh Generator installation
US5077516A (en) * 1987-09-05 1991-12-31 Robert Bosch Gmbh Generator unit
WO1994000910A1 (en) * 1992-06-30 1994-01-06 Ford Motor Company Limited Method and apparatus for operating a motor vehicle alternator
FR2923963A1 (en) * 2007-11-19 2009-05-22 Renault Sas SYSTEM FOR CONTROLLING AN ELECTRIC MACHINE ON BOARD A MOTOR VEHICLE.
WO2009068787A2 (en) * 2007-11-19 2009-06-04 Renault S.A.S System for controlling an electrical machine mounted on board a motor vehicle
WO2009068787A3 (en) * 2007-11-19 2009-08-20 Renault Sa System for controlling an electrical machine mounted on board a motor vehicle

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Publication number Publication date
DE3150446A1 (en) 1983-06-30

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