DE102019103600B3 - Method for controlling a wheel electronics and corresponding electric vehicle - Google Patents

Method for controlling a wheel electronics and corresponding electric vehicle Download PDF

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DE102019103600B3
DE102019103600B3 DE102019103600.3A DE102019103600A DE102019103600B3 DE 102019103600 B3 DE102019103600 B3 DE 102019103600B3 DE 102019103600 A DE102019103600 A DE 102019103600A DE 102019103600 B3 DE102019103600 B3 DE 102019103600B3
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electric vehicle
wheel electronics
control unit
management control
inductive charging
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Michael Baum
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Dr Ing HCF Porsche AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0479—Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0418—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/0455—Transmission control of wireless signals
    • B60C23/0461—Transmission control of wireless signals externally triggered, e.g. by wireless request signal, magnet or manual switch

Abstract

Die Erfindung stellt ein Verfahren zum Ansteuern einer Radelektronik mit den folgenden Merkmalen bereit: Das Ansteuern erfolgt durch das Lademanagementsteuergerät (10) eines mit der Radelektronik (17, 18) ausgestatteten Elektrofahrzeuges (20).
Die Erfindung stellt ferner ein entsprechendes Elektrofahrzeug (20), ein entsprechendes Computerprogramm sowie ein entsprechendes Speichermedium bereit.

Figure DE102019103600B3_0000
The invention provides a method for driving a wheel electronics with the following features: The control is performed by the charging management control unit (10) of an electric vehicle (20) equipped with the wheel electronics (17, 18).
The invention further provides a corresponding electric vehicle (20), a corresponding computer program and a corresponding storage medium.
Figure DE102019103600B3_0000

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Ansteuern einer Radelektronik. Die vorliegende Erfindung betrifft darüber hinaus ein entsprechendes Elektrofahrzeug, ein entsprechendes Computerprogramm sowie ein entsprechendes Speichermedium.The present invention relates to a method for driving a wheel electronics. The present invention also relates to a corresponding electric vehicle, a corresponding computer program and a corresponding storage medium.

Stand der TechnikState of the art

In der Kraftfahrzeugtechnik wird jedwedes System, das zur Überwachung des Reifendrucks bei Kraftfahrzeugen dient, als Reifendruckkontrollsystem (RDKS, RDK, RDC; engl. tire pressure monitoring system, TPMS) bezeichnet. Gattungsmäßige Reifendruckkontrollsysteme können dazu beitragen, Unfälle, die durch ungeeigneten Reifendruck verursacht werden, zu verhindern, Kraftstoff zu sparen und Reifenverschleiß zu mindern.In automotive engineering, any system used to monitor tire pressure in motor vehicles is referred to as a tire pressure monitoring (TPMS) system (RDKS, RDK, RDC). Generic tire pressure monitoring systems can help prevent accidents caused by improper tire pressure, save fuel, and reduce tire wear.

Bei einschlägigen direkt messenden Systemen erfasst ein Drucksensor Innendruck und Lufttemperatur eines Reifens. Diese sogenannte Radelektronik dreht sich während der Fahrt mit dem Rad; daher ist zur Signalübertragung nach dem Stand der Technik eine Funkverbindung zwischen Rad- und Bordelektronik nötig.In relevant direct measuring systems, a pressure sensor detects internal pressure and air temperature of a tire. This so-called wheel electronics rotates while riding the bike; Therefore, a radio link between the wheel and on-board electronics is required for signal transmission according to the prior art.

Die Radelektronik verfügt als Energiequelle in der Regel über eine Batterie. Um diese Batterie zu schonen, erweist es sich als sinnvoll, die Elektronik bei über längerer Zeit stehendem Fahrzeug in einen Ruhezustand zu versetzen. Bekannt sind daher Radelektroniken mit einem Beschleunigungssensor, welcher den Bewegungszustand des Fahrzeugs erkennt und Luftdruckmessung sowie Funkübertragung aktiviert, wenn das Fahrzeug in Bewegung ist.The wheel electronics usually have a battery as an energy source. In order to save this battery, it proves useful to put the electronics in a resting state for a long time standing vehicle. Known are therefore Radelektroniken with an acceleration sensor, which detects the state of motion of the vehicle and air pressure measurement and radio transmission activated when the vehicle is in motion.

Um eine Drucküberwachung auch bei stehendem Fahrzeug zu gestatten, können handelsübliche Radelektroniken durch ein Niederfrequenzsignal (fachsprachlich: „Trigger-Signal“) in ihren Betriebszustand versetzt („getriggert“, „angetriggert“) werden. Hierzu sind in den Radkästen Niederfrequenz-Antennen verbaut. EP 1 816 015 A2 und US 2009/0184815 A1 offenbaren derartige Systeme.In order to allow pressure monitoring even when the vehicle is stationary, commercially available wheel electronics can be put into their operating state ("triggered", "triggered") by a low-frequency signal (in technical terms: "trigger signal"). For this purpose, low-frequency antennas are installed in the wheel arches. EP 1 816 015 A2 and US 2009/0184815 A1 reveal such systems.

Um Radelektroniken in diesem Sinne zu triggern, gibt es nach dem Stand der Technik somit im Wesentlichen nur folgende Möglichkeiten: die Erhöhung der Fahrgeschwindigkeit über einen Schwellwert von beispielsweise 25 km/h, die Veränderung des Reifendruckes oder die Nutzung in der Regel tragbarer Werkstatthilfsmittel, die seitens der Radelektronik einen Wechselstrom der erforderlichen Frequenz von typischerweise 125 kHz induzieren.In order to trigger wheel electronics in this sense, according to the state of the art, there are essentially only the following options: increasing the vehicle speed over a threshold value of, for example, 25 km / h, changing the tire pressure or using generally usable workshop aids, which from the wheel electronics induce an alternating current of the required frequency of typically 125 kHz.

CN 102431397 A beschreibt ein Verfahren zur Versorgung der Radelektroniken einer Reifendruckkontrolleinrichtung mit Energie während eines induktiven Ladevorganges. CN 102431397 A describes a method for supplying the wheel electronics of a tire pressure monitoring device with energy during an inductive charging process.

DE 102014003217 A1 offenbart ein Verfahren nach dem Oberbegriff des Anspruchs 1. DE 102014003217 A1 discloses a method according to the preamble of claim 1.

Offenbarung der ErfindungDisclosure of the invention

Die Erfindung stellt ein Verfahren zum Ansteuern einer Radelektronik, ein entsprechendes Elektrofahrzeug, ein entsprechendes Computerprogramm sowie ein entsprechendes maschinenlesbares Speichermedium gemäß den unabhängigen Ansprüchen bereit.The invention provides a method for driving a wheel electronics, a corresponding electric vehicle, a corresponding computer program and a corresponding machine-readable storage medium according to the independent claims.

Erfindungsgemäß werden die Radelektroniken der Reifendruckkontrolle mit Hilfe des zum drahtlosen Laden (wireless charging) verwendeten Induktiv-Ladefelds angesteuert. Dabei ist es der Grundgedanke des Erfindungsgegenstandes, eine Funktionalität zu schaffen, die es ermöglicht, die Radelektroniken gleichsam zu „wecken“ und keine zusätzlichen Steuergeräte, sondern die bestehende Ladeinfrastruktur verwendet.According to the invention, the wheel electronics of the tire pressure control are activated by means of the inductive charging field used for wireless charging. It is the basic idea of the subject invention to provide a functionality that allows, as it were to "wake up" the wheel electronics and no additional control devices, but uses the existing charging infrastructure.

Ein Vorzug dieser Lösung liegt in der Schaffung einer bidirektionalen Verbindung zwischen Rad- und Bordelektronik ohne zusätzliche teure Trigger-Module in den Radhäusern. Somit wird ohne konstruktiven Mehraufwand die Möglichkeit einer Standüberwachung eröffnet. Selbst wenn die Radelektroniken nach fünf Minuten Standzeit „einschlafen“, können sie über das Induktivladefeld sofort angetriggert und in Betrieb genommen werden.An advantage of this solution lies in the creation of a bidirectional connection between wheel and on-board electronics without additional expensive trigger modules in the wheel arches. Thus, the possibility of a stand monitoring is opened without additional design effort. Even if the wheel electronics "fall asleep" after five minutes of service, they can be immediately triggered and put into operation via the inductive charging field.

Im Service-Fall können die Radelektroniken erfindungsgemäß direkt im Rahmen einer Diagnose angesprochen werden, ohne dass das Fahrzeug mit einer Geschwindigkeit über 25 km/h bewegt werden muss. Abhängig von der Fahrweise lassen sich die Radelektroniken während der Fahrt zudem mittels Steuercodes, die vom Induktiv-Ladefeld auf einer Frequenz von 125 KHz gesendet werden, auf ein schnelleres Sendeintervall umstellen. Selbst Rennsportfahrzeuge können so gewünschte Radelektronik-Modi während der Fahrt auswählen und so im Rennbetrieb sehr schnell und sicher angelernt werden.In the service case, the wheel electronics according to the invention can be addressed directly in the context of a diagnosis without the vehicle must be moved at a speed over 25 km / h. Depending on the driving style, the wheel electronics can also be changed to a faster transmission interval by means of control codes sent by the inductive charging field at a frequency of 125 KHz. Even racing vehicles can select the desired wheel electronics modes while driving and thus be taught very quickly and safely in racing.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Patentansprüchen angegeben.Further advantageous embodiments of the invention are specified in the dependent claims.

Figurenlistelist of figures

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher beschrieben.

  • 1 zeigt ein herkömmliches Elektrofahrzeug mit einem Induktivladefeld.
  • 2 zeigt schematisch ein erfindungsgemäßes Elektrofahrzeug.
An embodiment of the invention is illustrated in the drawings and will be described in more detail below.
  • 1 shows a conventional electric vehicle with an inductive charging field.
  • 2 schematically shows an inventive electric vehicle.

Ausführungsformen der ErfindungEmbodiments of the invention

Nach einer Ausführungsform der Erfindung wird das Induktivladefeld (13) eines in 1 dargestellten herkömmlichen Elektrofahrzeuges (20) gemäß 2 zur Triggerung der Radelektronik (17, 18) eingesetzt. Das Reifendruckkontrollsystemsteuergerät (16) ist hierzu über einen CAN-Bus mit dem Lademanagementsteuergerät (10) verbunden und kann diesem das Signal geben, das Induktivladefeld (13) auf einer Frequenz von 125 kHz induktiv anzusteuern. Wenn beispielsweise das Induktivladefeld (13) des Elektrofahrzeuges (20) in dessen Vorderwagen platziert ist, kann die Radelektronik der Vorderräder (17) über eine sehr geringe elektromagnetische Feldstärke und jene der Hinterräder (18) mit einer höheren magnetischen Feldstärke auf der besagten Frequenz von 125 kHz gezielt angesprochen werden.According to one embodiment of the invention, the inductive charging field ( 13 ) one in 1 illustrated conventional electric vehicle ( 20 ) according to 2 for triggering the wheel electronics ( 17 . 18 ) used. The tire pressure monitoring system control unit ( 16 ) is via a CAN bus with the charge management control unit ( 10 ) and can give this the signal, the inductive charging field ( 13 ) on a frequency of 125 kHz inductively. If, for example, the inductive charging field ( 13 ) of the electric vehicle ( 20 ) is placed in the front of the car, the wheel electronics of the front wheels ( 17 ) over a very low electromagnetic field strength and those of the rear wheels ( 18 ) are addressed with a higher magnetic field strength on the said frequency of 125 kHz targeted.

Claims (10)

Verfahren zum Ansteuern einer Radelektronik (17, 18) durch das Lademanagementsteuergerät (10) eines mit der Radelektronik (17, 18) ausgestatteten Elektrofahrzeuges (20), gekennzeichnet durch folgendes Merkmal: - die Radelektronik (17, 18) lässt sich während der Fahrt mittels Steuercodes, die vom fahrzeugseitigen Induktiv-Ladefeld auf einer Frequenz von 125 kHz gesendet werden, auf ein schnelleres Sendeintervall umstellen.Method for controlling wheel electronics (17, 18) by the charging management control unit (10) of an electric vehicle (20) equipped with the wheel electronics (17, 18), characterized by the following feature: - the wheel electronics (17, 18) can be adjusted while driving Control codes, which are sent from the vehicle-side inductive charging field on a frequency of 125 kHz, to a faster transmission interval. Verfahren nach Anspruch 1, gekennzeichnet durch folgendes Merkmal: - das Ansteuern erfolgt über ein Induktivladefeld (13) des Elektrofahrzeuges (20).Method according to Claim 1 , characterized by the following feature: - the driving takes place via an inductive charging field (13) of the electric vehicle (20). Verfahren nach Anspruch 1 oder 2, gekennzeichnet durch folgende Merkmale: - das Ansteuern erfolgt auf einer Frequenz von 125 kHz.Method according to Claim 1 or 2 , characterized by the following features: - The driving takes place on a frequency of 125 kHz. Verfahren nach einem der Ansprüche 1 bis 3, gekennzeichnet durch folgendes Merkmal: - das Ansteuern erfolgt mit einer für Vorder- und Hinterräder des Elektrofahrzeuges (20) unterschiedlichen Feldstärke.Method according to one of Claims 1 to 3 , characterized by the following feature: - the driving takes place with a different field strength for the front and rear wheels of the electric vehicle (20). Elektrofahrzeug (20), gekennzeichnet durch folgende Merkmale: - mindestens eine Radelektronik (17, 18) und - ein Lademanagementsteuergerät (10), welches dazu eingerichtet ist, die Radelektronik (17, 18) in einem Verfahren nach einem der Ansprüche 1 bis 4 anzusteuern.Electric vehicle (20), characterized by the following features: - at least one wheel electronics (17, 18) and - a charge management control unit (10), which is adapted to the wheel electronics (17, 18) in a method according to one of Claims 1 to 4 head for. Elektrofahrzeug (20) nach Anspruch 5, gekennzeichnet durch folgende Merkmale: - ein Reifendruckkontrollsystemsteuergerät (16) und - einen das Lademanagementsteuergerät (10) und das Reifendruckkontrollsystemsteuergerät (16) verbindenden CAN-Bus.Electric vehicle (20) after Claim 5 , characterized by the following features: a tire pressure control system control unit (16) and a CAN bus connecting the charge management control unit (10) and the tire pressure monitoring system control unit (16). Elektrofahrzeug (20) nach Anspruch 5 oder 6, gekennzeichnet durch folgende Merkmale: - eine mit dem Lademanagementsteuergerät (10) verbundene Traktionsbatterie (11), - einen mit dem Lademanagementsteuergerät (10) verbundenen Gleichrichter (12) und - ein mit dem Gleichrichter (12) verbundenes Induktivladefeld (13).Electric vehicle (20) after Claim 5 or 6 , characterized by the following features: - a traction battery (11) connected to the charge management control unit (10), - a rectifier (12) connected to the charge management control unit (10), and - an inductive charging field (13) connected to the rectifier (12). Elektrofahrzeug (20) nach Anspruch 7, gekennzeichnet durch folgendes Merkmal: - das Lademanagementsteuergerät (10) ist dazu eingerichtet, wahlweise eine induktive Energieübertragung von einer durch ein Stromnetz (15) gespeisten Ladeplatte (14) auf das Induktivladefeld (13) zu steuern oder über das Induktivladefeld (13) die Radelektronik (17, 18) anzusteuern.Electric vehicle (20) after Claim 7 characterized by the following feature: - the charge management control device (10) is adapted to selectively control an inductive energy transfer from a charging plate (14) fed by a power supply (15) to the inductive charging field (13) or via the inductive charging field (13) to the wheel electronics (17, 18). Computerprogramm, welches dazu eingerichtet ist, alle Schritte eines Verfahrens nach einem der Ansprüche 1 bis 4 durchzuführen.Computer program adapted to perform all steps of a method according to one of Claims 1 to 4 perform. Maschinenlesbares Speichermedium mit einem darauf gespeicherten Computerprogramm nach Anspruch 9.Machine-readable storage medium with a computer program stored thereon Claim 9 ,
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1816015A2 (en) * 2006-02-03 2007-08-08 Omron Corporation Tire monitoring system
US20090184815A1 (en) * 2006-01-30 2009-07-23 Sanyo Electric Co., Ltd Tire Pressure Measuring System and Tire Pressure Measuring Device
DE102009029480A1 (en) * 2008-11-05 2010-05-06 Ford Global Technologies, LLC, Dearborn Trailer tire pressure monitoring system
CN102431397A (en) * 2011-11-09 2012-05-02 吉林市航盛宏宇电子有限公司 Wireless charging monitoring device for automobile tire pressure
US20130041531A1 (en) * 2011-08-09 2013-02-14 Ryan Marc LaFrance Vehicle controllers and methods for use in charging an electrically powered vehicle
DE102014003217A1 (en) * 2014-03-05 2015-09-10 Audi Ag Vehicle with an electric drive motor and an electrical energy storage
US20160039302A1 (en) * 2013-05-02 2016-02-11 Bayerische Motoren Werke Aktiengesellschaft Method and Apparatus for Operating a Contactless Charging Device for the Disturbance Free Operation of the Keyless Entry System
WO2017020840A1 (en) * 2015-08-04 2017-02-09 Xue Ji Methods and systems for tire management
DE102017005367A1 (en) * 2017-06-03 2018-12-06 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Method for correcting a tire inflation pressure of an electric vehicle, system with an electric vehicle and an electric charging station, charging station and electric vehicle
DE102018005995A1 (en) * 2018-07-27 2019-02-28 Daimler Ag Method for monitoring a charging process of an energy storage device of a motor vehicle, and charging system for monitoring a charging process

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090184815A1 (en) * 2006-01-30 2009-07-23 Sanyo Electric Co., Ltd Tire Pressure Measuring System and Tire Pressure Measuring Device
EP1816015A2 (en) * 2006-02-03 2007-08-08 Omron Corporation Tire monitoring system
DE102009029480A1 (en) * 2008-11-05 2010-05-06 Ford Global Technologies, LLC, Dearborn Trailer tire pressure monitoring system
US20130041531A1 (en) * 2011-08-09 2013-02-14 Ryan Marc LaFrance Vehicle controllers and methods for use in charging an electrically powered vehicle
CN102431397A (en) * 2011-11-09 2012-05-02 吉林市航盛宏宇电子有限公司 Wireless charging monitoring device for automobile tire pressure
US20160039302A1 (en) * 2013-05-02 2016-02-11 Bayerische Motoren Werke Aktiengesellschaft Method and Apparatus for Operating a Contactless Charging Device for the Disturbance Free Operation of the Keyless Entry System
DE102014003217A1 (en) * 2014-03-05 2015-09-10 Audi Ag Vehicle with an electric drive motor and an electrical energy storage
WO2017020840A1 (en) * 2015-08-04 2017-02-09 Xue Ji Methods and systems for tire management
DE102017005367A1 (en) * 2017-06-03 2018-12-06 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Method for correcting a tire inflation pressure of an electric vehicle, system with an electric vehicle and an electric charging station, charging station and electric vehicle
DE102018005995A1 (en) * 2018-07-27 2019-02-28 Daimler Ag Method for monitoring a charging process of an energy storage device of a motor vehicle, and charging system for monitoring a charging process

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