WO2008019677A2 - Device for improving the starting reliability of a vehicle equipped with an internal combustion engine - Google Patents

Device for improving the starting reliability of a vehicle equipped with an internal combustion engine Download PDF

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Publication number
WO2008019677A2
WO2008019677A2 PCT/DE2007/001454 DE2007001454W WO2008019677A2 WO 2008019677 A2 WO2008019677 A2 WO 2008019677A2 DE 2007001454 W DE2007001454 W DE 2007001454W WO 2008019677 A2 WO2008019677 A2 WO 2008019677A2
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WO
WIPO (PCT)
Prior art keywords
battery
temperature
combustion engine
liquid electrolyte
internal combustion
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PCT/DE2007/001454
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German (de)
French (fr)
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WO2008019677A3 (en
Inventor
C. Günther BAUER
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Iq Power Licensing Ag
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Publication of WO2008019677A2 publication Critical patent/WO2008019677A2/en
Publication of WO2008019677A3 publication Critical patent/WO2008019677A3/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/70—Arrangements for stirring or circulating the electrolyte
    • 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
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
    • H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
    • H02J7/007194—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature of the battery
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a device for increasing the starting safety of a vehicle with an internal combustion engine, which is started with a powered by a liquid electrolyte battery starter.
  • lead-acid batteries are preferably used for operating the starter, which are known to have a high weight because of the lead content.
  • the endeavor of the vehicle industry for lightweight construction also relates to the saving of battery weight.
  • the demand for higher battery power increases, since in addition to the conventional energy for starting z.
  • servo motors for adjusting the seats or for electrically heating the seats is needed.
  • Battery power is understood below to mean the capacity of the battery as well as its ability to supply power or to draw power. Battery performance is affected by various factors known to those skilled in the art.
  • the object of the invention is to provide a device which increases the performance of the battery and extends its life, whereby the starting safety of the internal combustion engine is increased.
  • a liquid electrolyte battery comprising: an electrically operated device for mixing the liquid electrolyte, wherein here any type of device is included, which is electrically driven or operated, such as.
  • an electrically operated device for mixing the liquid electrolyte wherein here any type of device is included, which is electrically driven or operated, such as.
  • various pumps magnetic stirring systems or thermal mixing devices that cause a mixing of the electrolyte by means of a heater.
  • tilting devices with the help of a movably mounted in the vehicle, but attached battery, can be tilted back and forth.
  • the battery is equipped with a known from the prior art hydrodynamic mixing device, which causes an effective mixing while driving - and consequently also a Blending in a stationary vehicle allows when the battery is moved by means of a moving device.
  • At least one temperature sensor for measuring the battery temperature and at least one voltage sensor for measuring the battery voltage are provided.
  • Such sensor arrangements of starter batteries are known from the prior art and therefore need not be explained in more detail to the person skilled in the art.
  • a first memory circuit for storing at least the battery temperature and the battery voltage over time
  • a second memory circuit are stored in the temperature-voltage value tables that contain relationships between the battery temperature and battery voltage, from which the state of charge and the aging state of wells - Sigelektrolyt battery can be removed.
  • These temperature-voltage tables are to be made for different battery types or are available to the manufacturers of modern batteries as long-term test results.
  • a first comparison and evaluation circuit determines the current state of charge and aging of the battery at least from the temperature and voltage values measured on the battery over time and by comparison with the comparison values taken from the second memory circuit.
  • a third memory circuit in which are stored skillsmi- tion panels that provide the required state of loading and aging of the battery and the current battery temperature a minimum sayinschaltdauer the mixing device before Hochstrom redesigner be turned on to prepare and carry out the starting of the internal combustion engine It also takes into account how long the high-current consumers would have to be turned on at the current temperature, the life of the vehicle and other relevant operating conditions in order to safely start the internal combustion engine. Furthermore, a recognition device is provided by means of which it can be recognized with high probability that the internal combustion engine is to be started. This recognition device is required because today's driver is used to starting the engine immediately after the ignition key or start button is pressed. A delay in starting is perceived as a limited performance of the vehicle and is therefore avoided by the vehicle manufacturer, as far as it is technically possible and reasonable.
  • the detection device outputs a signal for turning on the mixing device when the start of the internal combustion engine is likely to be intended.
  • the recognition device is connected to the door lock of the driver's door, since the probability of an intended trip is high when the driver's door is opened. It is clear to those skilled in the art that the recognition device is switched so that z. B. after reopening the driver's door after driving - because the driver forgot something in the vehicle - the mixing must not be performed.
  • the detection device is connected by circuitry with the remote control of the door lock.
  • the aid of the invention to give the driver the feeling of unrestricted driving readiness of his vehicle by means of technical means and at the same time to reduce the acidification of the battery to a predeterminable minimum amount, thereby prolonging the service life of the battery.
  • the mixture of the electrolyte should preferably also be maintained during starting, since in this phase the battery is heavily loaded by the high-current consumers and the mixing of the electrolyte promotes the current output and lowers the wear of the battery.
  • Fig. 1 shows the functional flow chart of the device according to the invention.
  • a first functional step it is determined which high-current consumers must be switched on at the intended start and for how long before the internal combustion engine drives the generator, ie how much the battery is likely to be loaded.
  • a minimum mixing time of the electrolyte is determined in a second functional step, i. H. a period of time that is mixed but not yet started.
  • the mixing of the electrolyte is carried out.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a device for improving the starting reliability of a vehicle equipped with an internal combustion engine, said combustion engine being started by a liquid electrolyte battery-fed starter. The device according to the invention comprises: at least one electrically operated device for mixing the liquid electrolyte, at least one temperature sensor for measuring the battery temperature, at least one voltage sensor for measuring the battery voltage, a first memory circuit for saving at least the battery temperature and the battery voltage, a second memory circuit in which the temperature/voltage table is saved, a first comparative and evaluation circuit which at least determines the actual charge and age status using the temperature and voltage values measured over time and comparing them with the comparative values which can be retrieved from the second memory circuit. The invention is characterized by a third memory circuit in which mixing tables are saved that provide, based on the actual charge and age status of the battery and the actual battery temperature, a required minimum duty time of the device for mixing the liquid electrolyte before the internal combustion engine should be started.

Description

Vorrichtung zur Erhöhung der Startsicherheit eines Fahrzeugs mit einer Brennkraftmaschine Device for increasing the starting safety of a vehicle with an internal combustion engine
Die Erfindung betrifft eine Vorrichtung zur Erhöhung der Startsicherheit eines Fahrzeugs mit einer Brennkraftmaschine, die mit einem von einer Flüssigelektrolytbatterie gespeisten Anlasser gestartet wird.The invention relates to a device for increasing the starting safety of a vehicle with an internal combustion engine, which is started with a powered by a liquid electrolyte battery starter.
In Fahrzeugen werden vorzugsweise Blei-Säure-Batterien zum Betreiben des An- lassers verwendet, die bekanntlich wegen des Bleianteils ein hohes Gewicht aufweisen. Das Bestreben der Fahrzeugindustrie nach Leichtbauweise betrifft auch die Einsparung von Batteriegewicht. Gleichzeitig steigt jedoch die Anforderung nach höherer Batterieleistung, da neben der herkömmlichen Energie zum Starten z. B. eines PKW auch Energie für zusätzliche Aggregate wie elektrische Fenster- heber, Stellmotore zum Verstellen der Sitze oder auch zum elektrischen Beheizen der Sitze benötigt wird. Femer ist es wünschenswert, die Batterieleistung über die Lebensdauer der Batterie möglichst auf einem konstanten, möglichst hohen Niveau zuverlässig zu halten, da zunehmend auch sicherheitsrelevante Funktionseinheiten wie Lenkung und Bremsen elektrisch gesteuert und betätigt werden. Unter Batterieleistung wird nachfolgend die Kapazität der Batterie sowie deren Fähigkeit zur Stromabgabe bzw. zur Stromaufnahme verstanden. Die Batterieleistung wird von verschiedenen, dem Fachmann bekannten Faktoren beeinflusst.In vehicles, lead-acid batteries are preferably used for operating the starter, which are known to have a high weight because of the lead content. The endeavor of the vehicle industry for lightweight construction also relates to the saving of battery weight. At the same time, however, the demand for higher battery power increases, since in addition to the conventional energy for starting z. As a car and energy for additional units such as electric window lift, servo motors for adjusting the seats or for electrically heating the seats is needed. Furthermore, it is desirable to keep the battery power over the life of the battery as possible at a constant, the highest possible level reliably, as increasingly safety-related functional units such as steering and brakes are electrically controlled and operated. Battery power is understood below to mean the capacity of the battery as well as its ability to supply power or to draw power. Battery performance is affected by various factors known to those skilled in the art.
Aus dem Stand der Technik sind verschiedene Maßnahmen bekannt, um die Leistung einer mit einem flüssigen Elektrolyten gefüllten Batterie, wie z. B. einer Blei-Säure-Batterie, zu erhöhen. Ein besonderes Problem bei Blei-Säure- Batterien ist die sogenannte Stratifikation der Säure, welche die Ungleichmäßigkeit der Säurekonzentration auf der Elektrodenfläche bezeichnet. Dadurch wird an Stellen mit einer zu hohen Säurekonzentration Korrosion an den Elektroden verursacht und somit die Lebensdauer der Batterie vermindert, dagegen an Stellen mit einer zu geringen Säurekonzentration nicht die volle Batterieleistung erreicht.Various measures are known from the prior art to the performance of a filled with a liquid electrolyte battery such. As a lead-acid battery to increase. A particular problem with lead-acid batteries is the so-called stratification of the acid, which denotes the unevenness of the acid concentration on the electrode surface. This will In places where the acid concentration is too high causes corrosion on the electrodes and thus reduces the life of the battery, on the other hand, full battery performance is not achieved in locations where the acid concentration is too low.
Daher sind unterschiedliche Vorrichtungen und Verfahren entwickelt worden, um den Elektrolyten umzuwälzen, damit die Säurekonzentration in allen Volumenabschnitten der Batterie gleich groß ist. Bei stationären Batterien wird z. B. Luft in den Elektrolyten eingeblasen. Für Fahrzeug batterien sind Elektrolytdurchmi- schungsvorrichtungen bekannt, die als hydrostatische Pumpen bezeichnet werden. Diese Vorrichtungen sind nur bei sich bewegenden Fahrzeugen wirksam, da sie Brems- und Beschleunigungsvorgänge in Verbindung mit der Massenträgheitskraft des flüssigen Elektrolyten nutzen. Diese Technik ist dem Fachmann bekannt, so dass lediglich beispielhaft auf die Dokumente US 4,963,444; US 5,096,787 und US 5,032,476 und DE 297 18 004.5 und speziell auf G 91 15 163.5 und G 91 15 597.5 verwiesen wird. Es ist eine permanente Aufgabe, die Stratifikation einer Batterie so gering wie möglich zu halten, um die Leistungsfähigkeit zu verbessern und die Lebensdauer der Batterie zu verlängern.Therefore, various devices and methods have been developed for circulating the electrolyte so that the acid concentration is equal in all volume portions of the battery. For stationary batteries z. B. blown air into the electrolyte. For vehicle batteries, electrolyte mixing devices are known, which are referred to as hydrostatic pumps. These devices are effective only on moving vehicles because they use braking and acceleration operations in conjunction with the inertial force of the liquid electrolyte. This technique is known to those skilled in the art, so that by way of example only documents US 4,963,444; US 5,096,787 and US 5,032,476 and DE 297 18 004.5 and specifically to G 91 15 163.5 and G 91 15 597.5. It is a permanent task to minimize the stratification of a battery to improve performance and extend battery life.
Die Aufgabe der Erfindung besteht in der Bereitstellung einer Vorrichtung, welche die Leistungsfähigkeit der Batterie erhöht und deren Lebensdauer verlängert, wodurch auch die Startsicherheit der Brennkraftmaschine erhöht wird.The object of the invention is to provide a device which increases the performance of the battery and extends its life, whereby the starting safety of the internal combustion engine is increased.
Die Aufgabe wird mittels einer Vorrichtung nach Anspruch 1 gelöst, wobei eine Flüssigelektrolyt-Batterie eingesetzt wird, die aufweist: Eine elektrisch betriebene Vorrichtung zum Durchmischen des Flüssigelektrolyts, wobei hier jede Art Vorrichtung umfasst ist, die elektrisch antreibbar oder betreibbar ist, wie z. B. diverse Pumpen, Magnet-Rühr-Systeme oder auch thermische Durchmischungsvorrichtungen, die eine Durchmischung des Elektrolyten mittels einer Heizung bewirken. Gleichfalls gehören dazu z. B. auch Kippvorrichtungen, mit deren Hilfe eine im Fahrzeug beweglich gelagerte, aber befestigte Batterie, hin und her gekippt werden kann. Dazu ist die Batterie mit einer aus dem Stand der Technik bekannten hydrodynamischen Durchmischungsvorrichtung auszustatten, die eine effektive Durchmischung während der Fahrt bewirkt - und die demzufolge auch eine Durchmischung bei einem still stehenden Fahrzeug ermöglicht, wenn die Batterie mittels einer Bewegungsvorrichtung bewegt wird.The object is achieved by means of a device according to claim 1, wherein a liquid electrolyte battery is used, comprising: an electrically operated device for mixing the liquid electrolyte, wherein here any type of device is included, which is electrically driven or operated, such as. As various pumps, magnetic stirring systems or thermal mixing devices that cause a mixing of the electrolyte by means of a heater. Likewise belong to z. As well as tilting devices, with the help of a movably mounted in the vehicle, but attached battery, can be tilted back and forth. For this purpose, the battery is equipped with a known from the prior art hydrodynamic mixing device, which causes an effective mixing while driving - and consequently also a Blending in a stationary vehicle allows when the battery is moved by means of a moving device.
Es sind wenigstens ein Temperatursensor zum Messung der Batterietemperatur, sowie wenigstens ein Spannungssensor zum Messung der Batteriespannung vorgesehen. Derartige Sensoranordnungen an Starterbatterien sind aus dem Stand der Technik bekannt und müssen dem Fachmann daher nicht näher erläutert werden.At least one temperature sensor for measuring the battery temperature and at least one voltage sensor for measuring the battery voltage are provided. Such sensor arrangements of starter batteries are known from the prior art and therefore need not be explained in more detail to the person skilled in the art.
Weiterhin ist eine erste Speicherschaltung zur Speicherung wenigstens der Batterietemperatur und der Batteriespannung über der Zeit vorgesehen und eine zweite Speicherschaltung, in der Temperatur-Spannungs-Wertetafeln gespeichert sind, die Zusammenhänge zwischen der Batterietemperatur und Batteriespannung enthalten, aus denen der Ladezustand und der Alterungszustand der Flüs- sigelektrolyt-Batterie entnehmbar ist. Diese Temperatur-Spannungs-Wertetafeln sind für verschiedene Batterietypen anzufertigen bzw. liegen den Herstellern moderner Batterien als Langzeittestergebnisse vor.Furthermore, a first memory circuit is provided for storing at least the battery temperature and the battery voltage over time, and a second memory circuit, are stored in the temperature-voltage value tables that contain relationships between the battery temperature and battery voltage, from which the state of charge and the aging state of Flüs - Sigelektrolyt battery can be removed. These temperature-voltage tables are to be made for different battery types or are available to the manufacturers of modern batteries as long-term test results.
Eine erste Vergleichs- und Auswerteschaltung ermittelt wenigstens aus den an der Batterie über die Zeit gemessenen Temperatur- und Spannungswerten und durch Vergleich mit den aus der zweiten Speicherschaltung entnommenen Vergleichswerten den aktuellen Lade- und Alterungszustand der Batterie.A first comparison and evaluation circuit determines the current state of charge and aging of the battery at least from the temperature and voltage values measured on the battery over time and by comparison with the comparison values taken from the second memory circuit.
Erfindungsgemäß ist eine dritte Speicherschaltung vorgesehen, in der Durchmi- schungswertetafeln gespeichert sind, die aus dem aktuellen Lade- und Alterungszustand der Batterie und der aktuellen Batterietemperatur eine erforderliche Min- desteinschaltdauer der Durchmischungsvorrichtung bereitstellen, bevor Hochstromverbraucher zur Vorbereitung und Durchführung des Startens der Brennkraftmaschine eingeschaltet werden, wobei auch berücksichtigt wird, wie lange die Hochstromverbraucher bei der aktuellen Temperatur, der Standzeit des Fahrzeugs und anderer relevanter Betriebsbedingungen eingeschaltet werden müssten, um die Brennkraftmaschine sicher zu starten. Weiterhin ist eine Erkennungsvorrichtung vorgesehen, mittels der mit hoher Wahrscheinlichkeit erkennbar ist, dass die Brennkraftmaschine gestartet werden soll. Diese Erkennungsvorrichtung ist erforderlich, da der heutige Fahrzeugführer daran gewöhnt ist, dass der Motor nach Betätigung des Zündschlüssels oder des Startknopfes sofort gestartet wird. Eine Verzögerung beim Start wird als eingeschränkte Leistungsfähigkeit des Fahrzeugs empfunden und wird daher vom Fahrzeughersteller, so weit es technisch möglich und sinnvoll ist, vermieden.According to the invention, a third memory circuit is provided, in which are stored Durchmi- tion panels that provide the required state of loading and aging of the battery and the current battery temperature a minimum Eineinschaltdauer the mixing device before Hochstromverbraucher be turned on to prepare and carry out the starting of the internal combustion engine It also takes into account how long the high-current consumers would have to be turned on at the current temperature, the life of the vehicle and other relevant operating conditions in order to safely start the internal combustion engine. Furthermore, a recognition device is provided by means of which it can be recognized with high probability that the internal combustion engine is to be started. This recognition device is required because today's driver is used to starting the engine immediately after the ignition key or start button is pressed. A delay in starting is perceived as a limited performance of the vehicle and is therefore avoided by the vehicle manufacturer, as far as it is technically possible and reasonable.
Die Erkennungsvorrichtung gibt ein Signal zum Einschalten der Durchmischungs- Vorrichtung ab, wenn der Start der Brennkraftmaschine wahrscheinlich beabsichtig ist.The detection device outputs a signal for turning on the mixing device when the start of the internal combustion engine is likely to be intended.
Nach Anspruch 2 ist die Erkennungsvorrichtung mit dem Türschloss der Fahrertür verbunden, da die Wahrscheinlichkeit einer beabsichtigten Fahrt hoch ist, wenn die Fahrertür geöffnet wird. Es ist dem Fachmann klar, dass die Erkennungsvorrichtung so geschaltet ist, dass z. B. nach dem nochmaligen Öffnen der Fahrertür nach Fahrtabschluss - weil der Fahrer etwas im Fahrzeug vergessen hat - die Durchmischung nicht durchgeführt werden muss.According to claim 2, the recognition device is connected to the door lock of the driver's door, since the probability of an intended trip is high when the driver's door is opened. It is clear to those skilled in the art that the recognition device is switched so that z. B. after reopening the driver's door after driving - because the driver forgot something in the vehicle - the mixing must not be performed.
Nach Anspruch 3 ist die Erkennungsvorrichtung mit der Fernbedienung der Türverriegelung schaltungstechnisch verbunden. Dadurch besteht die Möglichkeit, zeitiger mit dem Mischen zu beginnen, so dass der Fahrer auch bei langen Mischzeiten keine Einbusse seines gewohnten Komforts bemerkt, da er auch länger braucht, um im Fahrzeug Platz zu nehmen. Der Nachteil dieser Ausführungs- form der Erfindung besteht jedoch darin, dass bei der Benutzung der Fernbedienung nicht unterschieden werden kann, ob lediglich ein Gegenstand aus dem Fahrzeug entnommen werden soll, oder ob das Fahrzeug gestartet werden soll.According to claim 3, the detection device is connected by circuitry with the remote control of the door lock. This makes it possible to start mixing earlier, so that the driver does not notice any loss of his usual comfort, even with long mixing times, since it also takes longer to take a seat in the vehicle. The disadvantage of this embodiment of the invention, however, is that when using the remote control can not be distinguished whether only an object should be removed from the vehicle, or whether the vehicle should be started.
Wenn daher auf besonders hohen Komfort Wert gelegt wird und gleichzeitig die Batterie trotzdem optimal geschützt werden soll, kann auch eine Kombination der Ausführungsformen nach den Ansprüchen 2 und 3 erfolgen: Wenn nur eine kurze Mischzeit ermittelt worden ist, wird die Mischung erst bei Betätigung des Türschlosses der Fahrertür nach Anspruch 2 eingeleitet, d. h. wenn die Wahrscheinlichkeit des Starts des Fahrzeugs besonders hoch ist. So wird vermieden, dass in dem Fall, wenn das Fahrzeug mit der Fernbedienung geöffnet wird, um lediglich einen Gegenstand hinein zu legen, bereits die Mischung eingeleitet wird. Wenn jedoch die Mischzeit lang ist, z. B. nach besonders langer Standzeit oder bei niedrigen Außentemperaturen, wird mit dem Mischen immer bereits begonnen, wenn die Fernbedienung der Türverriegelung betätigt wird. So wird vermieden, dass die Mindestmischungsdauer nicht erreicht wird bzw. dass der Fahrer die Wartezeit als Komforteinbusse empfinden könnte.Therefore, if emphasis is placed on particularly high comfort and at the same time the battery should still be optimally protected, a combination of the embodiments according to claims 2 and 3 can take place: If only a short mixing time has been determined, the mixture is only on actuation of the door lock The driver's door according to claim 2 initiated, that is, when the probability of starting the vehicle is particularly high. This avoids being in In the case where the vehicle is opened with the remote control to merely put an object into it, the mixture is already introduced. However, if the mixing time is long, e.g. B. after a particularly long life or at low outdoor temperatures, mixing is always already started when the remote control of the door lock is actuated. This avoids that the minimum mixing time is not reached or that the driver could feel the waiting time as a comfort loss.
Nur für den Fall, dass die mit den Ausführungsformen nach den Ansprüchen 2 oder 3 bereitgestellten Mischzeiten nicht ausreichen, d. h. wenn der Fahrer in eine Wartesituation kommen würde, ist eine Displayansteuerschaltung zur Ansteuerung eines für den Fahrer erkennbaren Displays vorgesehen ist, das dem Fahrer eine Warte-Empfehlung gibt, bis die Mindestmischzeit abgelaufen ist. Dabei ist es dem Fahrer jedoch freigestellt, auch vor Ablauf der Mindestmischzeit zu starten.Only in the event that the mixing times provided with the embodiments according to claims 2 or 3 are insufficient, d. H. If the driver would come into a waiting situation, a display drive circuit is provided for controlling a recognizable for the driver display that gives the driver a wait recommendation until the minimum mixing time has expired. However, the driver is free to start before the minimum mixing time has elapsed.
Somit ist es mit Hilfe der Erfindung möglich, mittels technischer Mittel dem Fahrer das Gefühl einer uneingeschränkten Fahrbereitschaft seines Fahrzeugs zu geben und gleichzeitig die Säurestratifikation der Batterie auf ein vorbestimmbares Min- destmass zu senken, so dass dadurch die Lebensdauer der Batterie verlängert wird. Es ist dem Fachmann klar, dass die Mischung des Elektrolyten vorzugsweise auch noch während des Startens beibehalten werden sollte, da in dieser Phase die Batterie durch die Hochstromverbraucher stark belastet wird und das Mischen des Elektrolyten die Stromabgabe befördert und den Verschleiss der Batterie senkt.Thus, it is possible with the aid of the invention to give the driver the feeling of unrestricted driving readiness of his vehicle by means of technical means and at the same time to reduce the acidification of the battery to a predeterminable minimum amount, thereby prolonging the service life of the battery. It is clear to the person skilled in the art that the mixture of the electrolyte should preferably also be maintained during starting, since in this phase the battery is heavily loaded by the high-current consumers and the mixing of the electrolyte promotes the current output and lowers the wear of the battery.
Weitere Maßnahmen und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit der beigefügten schematischen Zeichnung.Further measures and advantages of the invention will become apparent from the following description of an embodiment in conjunction with the accompanying schematic drawing.
Fig. 1 zeigt den Funktionsablaufplan der erfindungsgemäßen Vorrichtung.Fig. 1 shows the functional flow chart of the device according to the invention.
Da der Aufbau der erfindungsgemäßen Vorrichtung bereits erläutert wurde, wird nachfolgend lediglich der Funktionsablauf der Vorrichtung in Funktionsschritten beschrieben: - In einem ersten Funktionsschritt wird ermittelt, welche Hochstromverbraucher bei dem vorgesehenen Start und wie lange eingeschaltet werden müssen, bevor die Brennkraftmaschine den Generator antreibt, d. h. wie stark die Batterie vor- aussichtlich belastet wird.Since the structure of the device according to the invention has already been explained, only the functional sequence of the device in functional steps will be described below: In a first functional step, it is determined which high-current consumers must be switched on at the intended start and for how long before the internal combustion engine drives the generator, ie how much the battery is likely to be loaded.
- Ausgehend von dem Ergebnis des ersten Funktionsschrittes wird in einem zweiten Funktionsschritt eine Mindestmischungsdauer des Elektrolyten ermittelt, d. h. eine Zeitspanne, in der gemischt, aber noch nicht gestartet wird.Based on the result of the first functional step, a minimum mixing time of the electrolyte is determined in a second functional step, i. H. a period of time that is mixed but not yet started.
- Im dritten Verfahrensschritt wird die Durchmischung des Elektrolyten durchgeführt.- In the third step, the mixing of the electrolyte is carried out.
Wenn die Mindestmischzeit abgelaufen ist, werden die Hochstromverbraucher in der betriebsmäßig vorgesehenen Reihenfolge eingeschaltet.When the minimum mixing time has elapsed, the high-current consumers are switched on in the operational order.
An Hand der beschriebenen Ausführungsformen kann der Fachmann die technische Lehre der vorliegenden Erfindung vollständig entnehmen. Es ist klar, dass diese Ausführungsformen durch einen Fachmann mit Hilfe der erfindungsgemäs- sen Lehre weiterentwickelt und modifiziert oder kombiniert werden können. Daher fallen auch diese, nicht explizit genannten oder gezeigten weiteren Ausführungsformen in den Schutzbereich der nachfolgenden Patentansprüche. With reference to the described embodiments, the skilled person can completely remove the technical teaching of the present invention. It is clear that these embodiments can be further developed and modified or combined by a person skilled in the art with the aid of the teaching according to the invention. Therefore, these, not explicitly mentioned or shown further embodiments fall within the scope of the following claims.

Claims

Ansprüche claims
1. Vorrichtung zur Erhöhung der Startsicherheit einer Brennkraftmaschine, die mit einem von einer Flüssigelektrolyt-Batterie gespeisten elektrischen Anlasser gestartet wird, wobei die Flüssigelektrolyt-Batterie aufweist:An apparatus for increasing the starting safety of an internal combustion engine, which is started with an electric starter powered by a liquid electrolyte battery, wherein the liquid electrolyte battery comprises:
- eine elektrisch betriebene Vorrichtung zum Durchmischen des Flüssigelektrolyts, - wenigstens einen Temperatursensor zum Messung der Batterietemperatur,an electrically operated device for mixing the liquid electrolyte, at least one temperature sensor for measuring the battery temperature,
- wenigstens einen Spannungssensor zum Messung der Batteriespannung,at least one voltage sensor for measuring the battery voltage,
- eine erste Speicherschaltung zur Speicherung wenigstens der Batterietemperatur und der Batteriespannung über der Zeit,a first memory circuit for storing at least the battery temperature and the battery voltage over time,
- eine zweite Speicherschaltung, in der Temperatur-Spannungs-Wertetafeln ge- speichert sind, die Zusammenhänge wenigstens zwischen der Batterietemperatur und Batteriespannung enthalten, aus denen der Ladezustand und der Alterungszustand der Flüssigelektrolyt-Batterie entnehmbar ist,a second memory circuit in which temperature-voltage value tables are stored, which contain correlations at least between the battery temperature and battery voltage, from which the state of charge and the state of aging of the liquid electrolyte battery can be deduced,
- eine erste Vergleichs- und Auswerteschaltung, die wenigstens aus den über die Zeit gemessenen Temperatur- und Spannungswerten und durch Vergleich mit den in der zweiten Speicherschaltung entnehmbaren Vergleichswerten den aktuellen Lade- und Alterungszustand ermittelt, dadurch gekennzeichnet, dassa first comparison and evaluation circuit which determines the current state of charge and aging at least from the temperature and voltage values measured over time and by comparison with the comparison values which can be taken in the second memory circuit, characterized in that
- eine dritte Speicherschaltung vorgesehen ist, in der Durchmischungswertetafeln gespeichert sind, die aus dem aktuellen Lade- und Alterungszustand der Batterie und der aktuellen Batterietemperatur eine erforderliche Mindesteinschaltdauer der Vorrichtung zum Durchmischen des Flüssigelektrolyts bereitstellen, bevor Hochstromverbraucher zur Vorbereitung und Durchführung des Startens der Brennkraftmaschine eingeschaltet werden und - eine Erkennungsvorrichtung vorgesehen ist, mittels der mit hoher Wahrscheinlichkeit erkennbar ist, dass die Brennkraftmaschine gestartet werden soll, wobei die Erkennungsvorrichtung ein Signal zum Einschalten der Vorrichtung zum mechanischen Durchmischen des Fiüssigelektrolyts abgibt, wenn der Start der Brennkraftmaschine wahrscheinlich beabsichtig ist.a third memory circuit is provided in which intermixation panels are stored which provide a required minimum on-duration of the liquid electrolyte mixing device from the current battery charging and aging conditions and the current battery temperature before high current consumers are switched on to prepare and perform starting of the internal combustion engine and - A detection device is provided by means of which it is highly likely that the internal combustion engine is to be started, the detection device emits a signal for switching on the device for mechanical mixing of the liquid electrolyte, when the start of the internal combustion engine is probably intended.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Erkennungsvorrichtung mit dem Türschloss der Fahrertür verbunden ist.2. Apparatus according to claim 1, characterized in that the recognition device is connected to the door lock of the driver's door.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Erkennungsvorrichtung mit der Fernbedienung der Türverriegelung schaltungstechnisch verbunden ist.3. Apparatus according to claim 1, characterized in that the detection device is connected by circuitry with the remote control of the door lock.
4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine Display- ansteuerschaltung zur Ansteuerung eines für den Fahrer erkennbaren Displays vorgesehen ist, die dem Fahrer einen Warte-Hinweis mit der Aufforderung zum Warten gibt, falls der Fahrer starten möchte, die Mindestmischzeit jedoch noch nicht abgelaufen ist. 4. The device according to claim 1, characterized in that a display control circuit is provided for controlling a recognizable for the driver display, which gives the driver a wait-note with the request to wait, if the driver wants to start, but the minimum mixing time yet not expired.
PCT/DE2007/001454 2006-08-16 2007-08-16 Device for improving the starting reliability of a vehicle equipped with an internal combustion engine WO2008019677A2 (en)

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AU8797382A (en) * 1981-08-31 1983-06-30 William Reginald Bulmer Martin Circulating electrolyte for lead acid battery
FR2791481A1 (en) * 1999-03-26 2000-09-29 Renault Method for controlling the anticipated load for the power accumulator or super condenser in hybrid or electrical drive automobile
EP1382475A1 (en) * 2002-07-19 2004-01-21 Toyota Jidosha Kabushiki Kaisha Hybrid vehicle and method in which the engine is preheated before start

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ATE349077T1 (en) * 2002-11-21 2007-01-15 Hoppecke Batterien Gmbh & Co BATTERY WITH CIRCULATION DEVICE FOR HOMOGENIZING THE ELECTROLYTE

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
AU8797382A (en) * 1981-08-31 1983-06-30 William Reginald Bulmer Martin Circulating electrolyte for lead acid battery
FR2791481A1 (en) * 1999-03-26 2000-09-29 Renault Method for controlling the anticipated load for the power accumulator or super condenser in hybrid or electrical drive automobile
EP1382475A1 (en) * 2002-07-19 2004-01-21 Toyota Jidosha Kabushiki Kaisha Hybrid vehicle and method in which the engine is preheated before start

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