WO2018145992A1 - Inductive battery-charging device - Google Patents

Inductive battery-charging device Download PDF

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Publication number
WO2018145992A1
WO2018145992A1 PCT/EP2018/052521 EP2018052521W WO2018145992A1 WO 2018145992 A1 WO2018145992 A1 WO 2018145992A1 EP 2018052521 W EP2018052521 W EP 2018052521W WO 2018145992 A1 WO2018145992 A1 WO 2018145992A1
Authority
WO
WIPO (PCT)
Prior art keywords
induction
battery device
induction interface
operating state
interface
Prior art date
Application number
PCT/EP2018/052521
Other languages
German (de)
French (fr)
Inventor
Juergen Mack
Dragan Krupezevic
Martin Gonda
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 WO2018145992A1 publication Critical patent/WO2018145992A1/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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/122—Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/12—Inductive energy transfer
    • B60L53/124—Detection or removal of foreign bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
    • 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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]

Definitions

  • a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, which is provided in at least one receiving operating state for receiving an electrical energy for charging the rechargeable battery cell unit by means of induction.
  • the invention is based on a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, which is provided in at least one receiving operating state to receive an electrical energy for charging the rechargeable battery cell unit by means of induction. It is proposed that the induction interface is provided in at least one transmission operating state for transmitting electrical energy stored in the battery cell unit by means of induction.
  • a “rechargeable battery device” is to be understood as meaning, in particular, a device which, in particular, is at least temporary
  • a rechargeable energy storage device Preferably, this is to be understood in particular as a rechargeable energy storage device.
  • provided is meant in particular specially programmed, designed and / or equipped.Assuming that an object is intended for a particular function should in particular be understood to mean that the object performs this particular function in at least one application and / or Operating condition is met and / or leads.
  • a “rechargeable cell unit” is to be understood, in particular, as a rechargeable energy storage unit having at least one battery cell which is provided for charging by the introduction of a charging current and / or at least temporary storage of electrical energy.
  • the rechargeable battery cell unit can have at least one battery cell block in which several rechargeable cell cells are connected in series and / or in parallel.
  • a "battery cell” is to be understood in particular as meaning a unit which is provided for electrochemical storage of electrical energy by means of a reversible reaction
  • the battery cell may be, for example, a lead-acid battery, a NiCd battery cell, a NiMH battery cell, but preferably a lithium-based battery cell
  • the battery cell can be different from battery cells
  • Nominal voltages may be formed, for example rated voltages of 1, 2 V, 1, 5 V or 3.6 V.
  • the battery cells Preferably, the battery cells have a cylindrical shape.
  • the rechargeable battery device may have a plurality of rechargeable battery cells which are connected in series and / or in parallel in order to achieve a higher total voltage of the rechargeable battery device.
  • the battery device a battery cell with a voltage of 3.6 V, two series-connected battery cells with a voltage of 3.6 V for each
  • An "induction interface” should be understood to mean, in particular, an electronic unit which is in a
  • Reception mode is provided to receive electrical energy by induction of at least one transmitter for recharging the battery cell unit, transform and / or reprocess these and supply the battery cell unit.
  • the induction interface is provided to electrical
  • the battery device may further comprise a battery housing.
  • a “rechargeable battery housing” should be understood, in particular, as an assembly comprising at least one housing component which at least partially delimits the rechargeable battery device with outer walls against an environment and which is provided, in particular, to protect the inductive charging unit from the environment and damage and / or to avoid pollution.
  • a generic battery device can be provided with advantageous operating characteristics.
  • the battery device can advantageously be inductively charged both by means of the induction interface and also inductively transmit electrical energy to an external energy receiver, in particular a further battery device, by means of the induction interface.
  • the induction interface has an induction coil which is provided in response to an operating state of the induction interface to receive or transmit electrical energy.
  • induction coil should be understood to mean, in particular, a coil having at least one winding of an electrically conductive material which is intended to receive, in a receiving operating state of the induction interface, electrical energy which is transmitted through an induction coil of an inductive charging device and via a charging electronics supply a battery cell.
  • the induction coil consists at least partially of an electrical conductor, in particular a wound electrical conductor, which is in particular at least partially arranged in the form of a circular disk.
  • a "charging electronics” is to be understood in particular as meaning an electronic unit which is intended to control a charging of battery cells and which in particular has electronic components for a voltage transformation
  • the inductive charging coil is intended to convert an electromagnetic alternating field into an alternating electrical current and / or vice versa
  • the alternating field has a frequency of 10 - 500 kHz, particularly preferably 100 - 120 kHz
  • the direction perpendicular to the coil plane is formed parallel to a winding axis of the induction coil, which advantageously makes it easy and / or cost-effective to use transmission and reception by means of electrical energy Only an induction coil can be realized.
  • the induction interface comprises at least one electronic unit which can be operated as an inverter or as a rectifier as a function of an operating state of the induction interface.
  • the electronic unit is at least essentially of a full bridge circuit tion, in particular of a MOSFET full bridge circuit formed.
  • the electronic unit is intended to be operated as an inverter in a transmission operating state of the induction interface.
  • an "inverter circuit” is to be understood as meaning, in particular, a circuit for generating an AC voltage from a DC voltage and / or for generating an AC current from a DC current Accumulator unit stored electrical energy to generate an oscillating electrical signal, preferably with a frequency of at least 1 kHz, preferably of at least 10 kHz and more preferably of at least 20 kHz for a resonant circuit and / or in particular for the induction coil
  • a “rectifier circuit” is understood to mean, in particular, a circuit for generating a DC voltage from an AC voltage be.
  • the electronics unit in a reception operating state of the induction interface, is provided to convert an AC voltage received from the induction coil and / or an AC current into a DC voltage and / or a DC current to charge the battery cell unit.
  • the rechargeable battery device comprises a control and / or regulating unit which is provided at least to switch the induction interface to the transmission operating state or the reception operating state automatically and / or in dependence on an operator selection.
  • a "control and / or regulating unit” should be understood to mean, in particular, a unit having at least one control electronics.
  • Control electronics are to be understood in particular as meaning a unit having a processor unit and a memory unit as well as an operating program stored in the memory unit.
  • the control and / or regulating unit is provided in a transmission operating state of the induction interface to control the electronic unit as an inverter.
  • the control and / or regulating unit is provided, in particular, to control the electronic unit as a rectifier.
  • the switching of the operating states of the induction interface can be special automatically done in response to a state of charge of the battery cell unit.
  • the induction interface can be automatically switched to the reception operating state when the battery cell unit falls below a charging limit value.
  • a transmission operating state of the induction interface can be terminated automatically when the charging cell unit falls below a charging limit value and / or a switching of the induction interface into the transmission operating state can be automatically prevented.
  • a switching of the operating states of the induction interface by a manual input of an operator, for example via a selector switch take place. As a result, an advantageously simple and / or reliable switching of the operating states of the induction interface can take place.
  • the rechargeable battery device comprises a communication unit which is provided for establishing an operating state of the induction interface with a communication unit of an external inductive
  • a "communication unit” is to be understood as meaning in particular a unit which is provided for exchanging data.
  • the communication unit has at least one information input and at least one information output
  • this is to be understood as meaning a communication unit with a wireless interface such as, for example, a Bluetooth interface, a WLAN interface, a UMTS interface and / or an NFC interface, etc.
  • an interface of the communication unit may be at least partially implemented
  • the communication unit is intended to exchange information with a communication unit of an external energy transmitter and / or receiver on the basis of which the In the transmission interface or the receive operating state is switched.
  • the induction interface is intended to adaptively adapt to an induction interface of an external inductive energy transmitter and / or receiver.
  • the induction interface is intended to adapt itself, in particular with regard to a transmission frequency and / or a transmission power, in particular without intervention of an operator, to an induction interface of an external inductive energy transmitter and / or receiver. This allows an advantageously flexible and / or universal applicability of the battery device can be achieved.
  • the battery device has a control and / or regulating unit which is provided during a transmission and / or reception operating state of the induction interface at least for carrying out a foreign object detection.
  • the term "foreign object recognition” should be understood to mean, in particular, the detection and / or verification of the presence of foreign objects, in particular in an environment of the induction charging device and / or the rechargeable battery device foreign objects which are arranged in a contact region between the induction charging device and a rechargeable battery device and which can impair a charging process in a charging operation are understood to mean “foreign objects” in particular metal and / or magnetic components, parts or other objects. As a result, an advantageously secure energy transfer can be ensured.
  • the induction interface of a first rechargeable battery device is in the transmission operating state and the induction interface of a second rechargeable battery device in the reception operating state, wherein the first rechargeable battery device is provided to transmit electrical energy to the second rechargeable battery device.
  • electrical energy can advantageously be transferred from a rechargeable battery device to a further rechargeable battery device.
  • a method for operating a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, by means of which in at least one receiving operating state an electrical energy for charging the rechargeable battery cell unit is received by induction is proposed, in which at least one Transmission mode is stored in the battery cell unit stored electrical energy by means of the induction unit by means of induction.
  • the battery device can advantageously be inductively charged both by means of the induction interface, as well as by means of the induction interface inductively transmit electrical energy to an external power receiver, in particular a further battery device.
  • an electrical appliance with at least one battery device is proposed.
  • the rechargeable battery device can be accommodated in the electrical device in a receiving space of the electrical device or be releasably attached to the electrical device.
  • an "electrical appliance” is to be understood, in particular, as meaning a portable electrical appliance, such as a smartphone, a tablet, a laptop, an e-book reader, a handheld power tool or the like, which is at least partially accessible through the In this way, an advantageous functionality, in particular with regard to an inductive absorption and / or release of electrical energy, can be achieved.
  • the battery device according to the invention should not be limited to the application and embodiment described above.
  • the rechargeable battery device according to the invention may have a different number from a number of individual elements, components and units mentioned herein for fulfilling a mode of operation described herein.
  • Fig. 1 is a schematic representation of a battery device with a battery cell unit and an induction interface
  • Fig. 2 is a schematic view of a system with two battery devices.
  • the rechargeable battery device 10 is provided in particular for supplying an electrical device, not shown here, with electrical energy.
  • the battery device 10 has a battery cell unit 12 and an induction interface 14.
  • the induction interface 14 may be operated in a receive mode and in a transmit mode.
  • the induction interface 14 is provided in the receiving operation state to receive electric power for charging the battery cell unit 12 by induction.
  • the induction interface 14 is provided to send electrical energy stored in the battery cell unit 12 by means of induction.
  • the induction interface 14 has an induction coil 16, which is provided in response to an operating state of the induction interface 14 to receive or send electrical energy.
  • the induction coil 16 is provided in the transmission mode of the induction interface 14 to radiate electrical energy. In the reception operating state of the induction interface 14, the induction coil 16 is intended to receive electrical energy.
  • the induction interface 14 comprises an electronic unit 18 which can be operated as an inverter 20 or as a rectifier 22 as a function of an operating state of the induction interface 14.
  • the electronic unit 18 can at least essentially be a full bridge circuit, in particular a
  • the operating direction and / or functional direction of the electronic unit 18 is reversible depending on the operating state of the induction interface 14.
  • the electronics unit 18 In the transmission operating state of the induction interface 14, the electronics unit 18 is operated as an inverter 20.
  • the inverter 20 is provided in the transmission operating state of the induction interface 14 to convert a DC voltage of the battery cell unit 12 for the induction coil 16 into an AC voltage in order to enable an inductive energy transmission.
  • the electronic unit 18 is operated as a rectifier 22.
  • the rectifier 22 is provided, in the receiving operating state of the induction interface 14, an alternating voltage induced at the induction coil 16 for the battery cell unit 12 in a DC voltage to allow charging of the battery cell unit 12.
  • the rechargeable battery device 10 has a control and / or regulating unit 24, which is provided at least to switch the induction interface 14 automatically and / or depending on an operator selection into the transmission operating state or the reception operating state.
  • the control and / or regulating unit 24 is provided in a transmission operating state of the induction interface 14 to control the electronic unit 18 as an inverter 20.
  • the control and / or regulating unit 24 is provided to control the electronic unit 18 as a rectifier 22.
  • the switching of the operating states of the induction interface 14 can take place automatically as a function of a charging state of the battery cell unit 12.
  • the induction interface 14 can automatically be switched to the reception operating state when the battery cell unit 12 falls below a charging limit value.
  • a transmission operating state of the induction interface 14 can be terminated automatically when a charging limit value of the battery cell unit 12 is undershot and / or switching of the induction interface 14 into the transmission operating state is automatically prevented.
  • the control and / or regulating unit 24 is further provided during the transmission and / or the reception operating state of the induction interface 14 for performing a foreign object detection.
  • the foreign object detection is intended to detect foreign objects that interfere with the transmission operating state or the Empfangsbetnebsschreib the induction interface 14 or pose a threat, and possibly interrupt an operation.
  • the control and / or regulating unit 24 detects a difference in quality between a stored nominal quality and an actual quality of a resonant circuit of the induction interface 14 for foreign object detection and compares this with a stored, permissible difference in quality.
  • the rechargeable battery device 10 furthermore has a communication unit 26 which is provided to communicate with a communication unit 28 of an external inductive energy transmitter and / or receiver 30 in order to establish an operating state of the induction interface 14 (see FIG.
  • the communication unit 28 is intended to communicate with the communication unit 28 of the external inductive energy transmitter and / or receiver 30 in order to establish an operating state of the induction interface 14 (see FIG.
  • the communication unit 28 is intended to communicate with the communication unit 28 of the external
  • the induction interface 14 is further provided adaptively, in particular with regard to a transmission frequency and / or a transmission power, to an induction interface 32 of an external inductive energy transmitter and / or receiver 30 (see FIG.
  • FIG. 2 shows a system 36 with a rechargeable battery device 10 and an external energy transmitter or receiver 30, which is designed here as a further rechargeable battery device 34.
  • the battery device 10 and the further battery device 34 are at least functionally at least substantially identical.
  • information 42 is exchanged between the communication unit 26 of the rechargeable battery device 10 and the communication unit 28 of the external energy transmitter and / or receiver 30, on the basis of which the induction interfaces 14, 32 are automatically inserted into the respective control and / or regulating units 24, 40 Transmission mode or the EmpfangsbetnebsTalk be switched.
  • the induction interface 14 of the rechargeable battery device 10 is in the transmission operating state and the induction interface 32 of the further rechargeable battery device 34 is in the reception state, electrical energy is transmitted from the rechargeable battery device 10 to the further rechargeable battery device 34. If the induction interface 14 of the rechargeable battery device 10 is in the reception state and the induction interface 32 of the further rechargeable battery device 34 is in the transmission operating state, electrical energy is transmitted from the further rechargeable battery device 34 to the battery device 10.

Abstract

The invention relates to a battery device, having a battery cell unit (12) and at least one induction interface (14) for receiving, in at least one receiving operating state, by means of induction, electrical energy for charging the battery cell unit (12). According to the invention, the induction interface (14) is provided for transmitting, in at least one transmitting operating state electrical energy stored in the battery cell unit (12) by means of induction.

Description

Beschreibung  description
INDUKTIVE AKKULADEVORRICHTUNG INDUCTIVE BATTERY DEVICE
Stand der Technik State of the art
Es ist bereits eine Akkuvorrichtung mit einer Akkuzelleneinheit und zumindest einer Induktionsschnittstelle, welche in zumindest einem Empfangsbetriebszustand dazu vorgesehen ist, eine elektrische Energie zur Aufladung der Akkuzelleneinheit mittels Induktion zu empfangen, vorgeschlagen worden. There has already been proposed a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, which is provided in at least one receiving operating state for receiving an electrical energy for charging the rechargeable battery cell unit by means of induction.
Offenbarung der Erfindung Die Erfindung geht aus von einer Akkuvorrichtung mit einer Akkuzelleneinheit und zumindest einer Induktionsschnittstelle, welche in zumindest einem Empfangsbetriebszustand dazu vorgesehen ist, eine elektrische Energie zur Aufladung der Akkuzelleneinheit mittels Induktion zu empfangen. Es wird vorgeschlagen, dass die Induktionsschnittstelle in zumindest einem Sendebe- triebszustand dazu vorgesehen ist, in der Akkuzelleneinheit gespeicherte elektrische Energie mittels Induktion zu senden. DISCLOSURE OF THE INVENTION The invention is based on a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, which is provided in at least one receiving operating state to receive an electrical energy for charging the rechargeable battery cell unit by means of induction. It is proposed that the induction interface is provided in at least one transmission operating state for transmitting electrical energy stored in the battery cell unit by means of induction.
Unter einer„Akkuvorrichtung" soll in diesem Zusammenhang insbesondere eine Vor- richtung verstanden werden, welche insbesondere zu einem zumindest temporärenIn this context, a "rechargeable battery device" is to be understood as meaning, in particular, a device which, in particular, is at least temporary
Speichern elektrischer Energie vorgesehen ist. Vorzugsweise soll darunter insbesondere eine wiederaufladbare Energiespeichervorrichtung verstanden werden. Unter „vorgesehen" soll insbesondere speziell programmiert, ausgelegt und/oder ausgestattet verstanden werden. Darunter, dass ein Objekt zu einer bestimmten Funktion vorgese- hen ist, soll insbesondere verstanden werden, dass das Objekt diese bestimmte Funktion in zumindest einem Anwendungs- und/oder Betriebszustand erfüllt und/oder aus- führt. Unter einer„Akkuzelleneinheit" soll in diesem Zusammenhang insbesondere eine wiederaufladbare Energiespeichereinheit mit zumindest einer Akkuzelle verstanden werden, welche zu einer Aufladung durch eine Einleitung eines Ladestroms und/oder zu einer zumindest temporären Speicherung elektrischer Energie vorgesehen ist. Saving electrical energy is provided. Preferably, this is to be understood in particular as a rechargeable energy storage device. By "provided" is meant in particular specially programmed, designed and / or equipped.Assuming that an object is intended for a particular function should in particular be understood to mean that the object performs this particular function in at least one application and / or Operating condition is met and / or leads. In this context, a "rechargeable cell unit" is to be understood, in particular, as a rechargeable energy storage unit having at least one battery cell which is provided for charging by the introduction of a charging current and / or at least temporary storage of electrical energy.
Insbesondere kann die Akkuzelleneinheit mindestens einen Akkuzellenblock aufweisen, in dem mehrere Akkuzellen in Reihe und/oder parallel geschaltet sind. Unter einer„Akkuzelle" soll insbesondere eine Einheit verstanden werden, die zu einer elektrochemischen Speicherung elektrischer Energie mittels einer reversiblen Reaktion vorgesehen ist. Die Akkuzelle kann beispielsweise von einer Bleiakkuzelle, einer NiCd- Akkuzelle, einer NiMH-Akkuzelle, bevorzugt jedoch von einer lithiumbasierten Akkuzelle gebildet sein. Die Akkuzelle kann von Akkuzellen unterschiedlicher In particular, the rechargeable battery cell unit can have at least one battery cell block in which several rechargeable cell cells are connected in series and / or in parallel. A "battery cell" is to be understood in particular as meaning a unit which is provided for electrochemical storage of electrical energy by means of a reversible reaction The battery cell may be, for example, a lead-acid battery, a NiCd battery cell, a NiMH battery cell, but preferably a lithium-based battery cell The battery cell can be different from battery cells
Nennspannungen gebildet sein, beispielsweise Nennspannungen von 1 ,2 V, 1 ,5 V oder 3,6 V. Bevorzugt weisen die Akkuzellen eine Zylinderform auf. Die Akkuvorrichtung kann mehrere Akkuzellen aufweisen, die in Reihe und/oder parallel geschaltet sind, um eine höhere Gesamtspannung der Akkuvorrichtung zu erreichen. Beispielsweise kann die Akkuvorrichtung eine Akkuzelle mit einer Spannung von 3,6 V, zwei in Reihe geschaltete Akkuzellen mit einer Spannung von jeweils 3,6 V für eine Nominal voltages may be formed, for example rated voltages of 1, 2 V, 1, 5 V or 3.6 V. Preferably, the battery cells have a cylindrical shape. The rechargeable battery device may have a plurality of rechargeable battery cells which are connected in series and / or in parallel in order to achieve a higher total voltage of the rechargeable battery device. For example, the battery device, a battery cell with a voltage of 3.6 V, two series-connected battery cells with a voltage of 3.6 V for each
Gesamtspannung der Akkuvorrichtung von 7,2 V oder drei in Reihe geschaltete Akkuzellen mit einer Spannung von jeweils 3,6 V für eine Gesamtspannung der Akkuvorrichtung von 10,8 V aufweisen. Unter einer„Induktionsschnittstelle" soll insbesondere eine elektronische Einheit verstanden werden, welche in einem Total voltage of the battery device of 7.2 V or three series-connected battery cells with a voltage of 3.6 V for a total battery voltage of 10.8 V have. An "induction interface" should be understood to mean, in particular, an electronic unit which is in a
Empfangsbetriebszustand dazu vorgesehen ist, zur Aufladung der Akkuzelleneinheit elektrische Energie über Induktion von zumindest einem Sender zu empfangen, diese umzuformen und/oder aufzubereiten und der Akkuzelleneinheit zuzuführen. In einem Sendebetriebszustand ist die Induktionsschnittstelle dazu vorgesehen, elektrischeReception mode is provided to receive electrical energy by induction of at least one transmitter for recharging the battery cell unit, transform and / or reprocess these and supply the battery cell unit. In a transmission mode, the induction interface is provided to electrical
Energie aus der Akkuzelleneinheit zu entnehmen, diese umzuformen und induktiv an zumindest einen Emfänger zu übertragen. Take energy from the battery cell unit, transform this and inductively transmitted to at least one receiver.
Insbesondere kann die Akkuvorrichtung ferner ein Akkugehäuse aufweisen. Unter ei- nem„Akkugehäuse" soll insbesondere eine Baugruppe, die mindestens ein Gehäusebauteil umfasst, verstanden werden, das die Akkuvorrichtung zumindest teilweise mit äußeren Wandungen gegenüber einer Umgebung begrenzt und das insbesondere dazu vorgesehen ist, die Induktivladeeinheit gegenüber der Umgebung zu schützen und eine Beschädigung und/oder Verschmutzung zu vermeiden. Durch eine derartige Ausgestaltung kann eine gattungsgemäße Akkuvorrichtung mit vorteilhaften Betriebseigenschaften bereitgestellt werden. Insbesondere kann die Akkuvorrichtung vorteilhaft sowohl mittels der Induktionsschnittstelle induktiv geladen werden als auch mittels der Induktionsschnittstelle elektrische Energie induktiv an ei- nen externen Energieempfänger, insbesondere eine weitere Akkuvorrichtung, übertragen. In particular, the battery device may further comprise a battery housing. A "rechargeable battery housing" should be understood, in particular, as an assembly comprising at least one housing component which at least partially delimits the rechargeable battery device with outer walls against an environment and which is provided, in particular, to protect the inductive charging unit from the environment and damage and / or to avoid pollution. By such a configuration, a generic battery device can be provided with advantageous operating characteristics. In particular, the battery device can advantageously be inductively charged both by means of the induction interface and also inductively transmit electrical energy to an external energy receiver, in particular a further battery device, by means of the induction interface.
Ferner wird vorgeschlagen, dass die Induktionsschnittstelle eine Induktionsspule aufweist, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle dazu vorgesehen ist, elektrische Energie zu empfangen oder zu senden. Unter einerIt is also proposed that the induction interface has an induction coil which is provided in response to an operating state of the induction interface to receive or transmit electrical energy. Under one
„Induktionsspule" soll in diesem Zusammenhang insbesondere eine Spule mit zumindest einer Wicklung aus einem elektrisch leitenden Material verstanden werden, die dazu vorgesehen ist, in einen Empfangsbetriebszustand der Induktionsschnittstelle eine elektrische Energie, die durch eine Induktionsspule eines Induktivladegeräts über- tragen wird, zu empfangen und über eine Ladeelektronik einer Akkuzelle zuzuführen.In this context, "induction coil" should be understood to mean, in particular, a coil having at least one winding of an electrically conductive material which is intended to receive, in a receiving operating state of the induction interface, electrical energy which is transmitted through an induction coil of an inductive charging device and via a charging electronics supply a battery cell.
Insbesondere besteht die Induktionsspule zumindest teilweise aus einem elektrischen Leiter, insbesondere einem gewickelten elektrischen Leiter, der insbesondere zumindest teilweise in Form einer Kreisscheibe angeordnet ist. Unter einer„Ladeelektronik" soll insbesondere eine Elektronikeinheit verstanden werden, die dazu vorgesehen ist, eine Aufladung von Akkuzellen zu steuern und die insbesondere Elektronikelemente zu einer Spannungstransformation aufweist. In einem Sendebetriebszustand der Induktionseinheit ist die Induktionsspule insbesondere dazu vorgesehen, eine in der Akkuzelleneinheit gespeicherte elektrische Energie an eine Induktionsspule eines Energieempfängers zu übertragen. Insbesondere ist die Induktivladespule dazu vorgesehen, ein elektromagnetisches Wechselfeld in einen elektrischen Wechselstrom umzuwandeln und/oder umgekehrt. Bevorzugt weist das Wechselfeld eine Frequenz von 10 - 500 kHz, besonders bevorzugt von 100 - 120 kHz, auf. Insbesondere ist die Richtung senkrecht zu der Spulenebene parallel zu einer Wicklungsachse der Induktionsspule ausgebildet. Hierdurch kann vorteilhaft einfach und/oder kostengünstig eine Übertragung und ein Empfang mittels elektrischer Energie unter Verwendung lediglich einer Induktionsspule realisiert werden. In particular, the induction coil consists at least partially of an electrical conductor, in particular a wound electrical conductor, which is in particular at least partially arranged in the form of a circular disk. A "charging electronics" is to be understood in particular as meaning an electronic unit which is intended to control a charging of battery cells and which in particular has electronic components for a voltage transformation In particular, the inductive charging coil is intended to convert an electromagnetic alternating field into an alternating electrical current and / or vice versa Preferably, the alternating field has a frequency of 10 - 500 kHz, particularly preferably 100 - 120 kHz In particular, the direction perpendicular to the coil plane is formed parallel to a winding axis of the induction coil, which advantageously makes it easy and / or cost-effective to use transmission and reception by means of electrical energy Only an induction coil can be realized.
Des Weiteren wird vorgeschlagen, dass die Induktionsschnittstelle zumindest eine Elektronikeinheit umfasst, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle als Wechselrichter oder als Gleichrichter betreibbar ist. Insbesondere ist die Elektronikeinheit zumindest im Wesentlichen von einer Vollbrückenschal- tung, insbesondere von einer MOSFET-Vollbrückenschaltung, gebildet. Insbesondere ist die Elektronikeinheit dazu vorgesehen, in einem Sendebetriebszustand der Induktionsschnittstelle als ein Wechselrichter betrieben zu werden. Unter einer„Wechselrichterschaltung" soll in diesem Zusammenhang insbesondere eine Schaltung zur Er- zeugung einer Wechselspannung aus einer Gleichspannung und/oder zur Erzeugung eines Wechselstroms aus einem Gleichstrom verstanden werden. Die Elektronikeinheit ist in einem Sendebetrieb der Induktionsschnittstelle insbesondere dazu vorgesehen, aus einer in der Akkuzelleneinheit gespeicherten elektrischen Energie ein oszillierendes elektrisches Signal, vorzugsweise mit einer Frequenz von zumindest 1 kHz, vor- zugsweise von zumindest 10 kHz und besonders bevorzugt von zumindest 20 kHz für eine Schwingkreisschaltung und/oder insbesondere für die Induktionsspule zu erzeugen. Die Elektronikeinheit ist insbesondere dazu vorgesehen, in einem Empfangsbetrieb der Induktionsschnittstelle als ein Gleichrichter betrieben zu werden. Unter einer „Gleichrichterschaltung" soll in diesem Zusammenhang insbesondere eine Schaltung zur Erzeugung einer Gleichspannung aus einer Wechselspannung verstanden werden.Furthermore, it is proposed that the induction interface comprises at least one electronic unit which can be operated as an inverter or as a rectifier as a function of an operating state of the induction interface. In particular, the electronic unit is at least essentially of a full bridge circuit tion, in particular of a MOSFET full bridge circuit formed. In particular, the electronic unit is intended to be operated as an inverter in a transmission operating state of the induction interface. In this context, an "inverter circuit" is to be understood as meaning, in particular, a circuit for generating an AC voltage from a DC voltage and / or for generating an AC current from a DC current Accumulator unit stored electrical energy to generate an oscillating electrical signal, preferably with a frequency of at least 1 kHz, preferably of at least 10 kHz and more preferably of at least 20 kHz for a resonant circuit and / or in particular for the induction coil In this connection, a "rectifier circuit" is understood to mean, in particular, a circuit for generating a DC voltage from an AC voltage be.
Insbesondere ist die Elektronikeinheit in einem Empfangsbetriebszustand der Induktionsschnittstelle dazu vorgesehen, eine von der Induktionsspule empfangene Wechselspannung und/oder einen Wechselstrom in eine Gleichspannung und/oder einen Gleichstrom zur Ladung der Akkuzelleneinheit umzuwandeln. Hierdurch kann vorteil- haft sowohl eine hochfrequente Energieversorgung der Induktionsspule in einem Sendebetrieb der Induktionsschnittstelle als auch eine Gleichrichtung in einem Empfangsbetriebszustand der Induktionsschnittstelle ermöglicht werden. In particular, in a reception operating state of the induction interface, the electronics unit is provided to convert an AC voltage received from the induction coil and / or an AC current into a DC voltage and / or a DC current to charge the battery cell unit. As a result, both a high-frequency power supply of the induction coil in a transmission mode of the induction interface and a rectification in a reception operating state of the induction interface can advantageously be made possible.
Weiterhin wird vorgeschlagen, dass die Akkuvorrichtung eine Steuer- und/oder Re- geleinheit umfasst, welche zumindest dazu vorgesehen ist, die Induktionsschnittstelle automatisch und/oder in Abhängigkeit von einer Bedienerauswahl in den Sendebetriebszustand oder den Empfangsbetriebszustand zu schalten. Unter einer„Steuer- und/oder Regeleinheit" soll insbesondere eine Einheit mit zumindest einer Steuerelektronik verstanden werden. Unter einer„Steuerelektronik" soll insbesondere eine Einheit mit einer Prozessoreinheit und mit einer Speichereinheit sowie mit einem in der Speichereinheit gespeicherten Betriebsprogramm verstanden werden. Insbesondere ist die Steuer- und/oder Regeleinheit in einem Sendebetriebszustand der Induktionsschnittstelle dazu vorgesehen, die Elektronikeinheit als einen Wechselrichter anzusteuern. In einem Empfangsbetriebszustand der Induktionsschnittstelle ist die Steuer- und/oder Regeleinheit insbesondere dazu vorgesehen, die Elektronikeinheit als Gleichrichter anzusteuern. Die Schaltung der Betriebszustände der Induktionsschnittstelle kann ins- besondere automatisch in Abhängigkeit von einem Ladezustand der Akkuzelleneinheit erfolgen. Insbesondere kann die Induktionsschnittstelle bei einem unterschreiten eines Ladegrenzwerts der Akkuzelleneinheit automatisch in den Empfangsbetriebszustand geschaltet werden. Ferner kann beispielsweise ein Sendebetriebszustand der Indukti- onsschnittstelle bei einem Unterschreiten eines Ladegrenzwerts der Akkuzelleneinheit automatisch beendet werden und/oder ein Schalten der Induktionsschnittstelle in den Sendebetriebszustand automatisch unterbunden werden. Alternativ oder zusätzlich kann ein Schalten der Betriebszustände der Induktionsschnittstelle durch eine manuelle Eingabe eines Bedieners, beispielsweise über einen Wahlschalter, erfolgen. Hier- durch kann ein vorteilhaft einfaches und/oder zuverlässiges Schalten der Betriebszustände der Induktionsschnittstelle erfolgen. Furthermore, it is proposed that the rechargeable battery device comprises a control and / or regulating unit which is provided at least to switch the induction interface to the transmission operating state or the reception operating state automatically and / or in dependence on an operator selection. A "control and / or regulating unit" should be understood to mean, in particular, a unit having at least one control electronics. "Control electronics" are to be understood in particular as meaning a unit having a processor unit and a memory unit as well as an operating program stored in the memory unit. In particular, the control and / or regulating unit is provided in a transmission operating state of the induction interface to control the electronic unit as an inverter. In a reception operating state of the induction interface, the control and / or regulating unit is provided, in particular, to control the electronic unit as a rectifier. The switching of the operating states of the induction interface can be special automatically done in response to a state of charge of the battery cell unit. In particular, the induction interface can be automatically switched to the reception operating state when the battery cell unit falls below a charging limit value. Furthermore, for example, a transmission operating state of the induction interface can be terminated automatically when the charging cell unit falls below a charging limit value and / or a switching of the induction interface into the transmission operating state can be automatically prevented. Alternatively or additionally, a switching of the operating states of the induction interface by a manual input of an operator, for example via a selector switch, take place. As a result, an advantageously simple and / or reliable switching of the operating states of the induction interface can take place.
Des Weiteren wird vorgeschlagen, dass die Akkuvorrichtung eine Kommunikationseinheit umfasst, welche dazu vorgesehen ist, zur Festlegung eines Betriebszustands der Induktionsschnittstelle mit einer Kommunikationseinheit eines externen induktivenFurthermore, it is proposed that the rechargeable battery device comprises a communication unit which is provided for establishing an operating state of the induction interface with a communication unit of an external inductive
Energiesenders und/oder -empfängers zu kommunizieren. Unter einer„Kommunikationseinheit" soll in diesem Zusammenhang insbesondere eine Einheit verstanden werden, welche zu einem Austausch von Daten vorgesehen ist. Insbesondere weist die Kommunikationseinheit zumindest einen Informationseingang und zumindest einen Informationsausgang auf. Es sind verschiedene, dem Fachmann als sinnvoll erscheinende Kommunikationseinheiten denkbar. Insbesondere soll darunter jedoch eine Kommunikationseinheit mit einer drahtlosen Schnittstelle wie beispielsweise einer Bluetooth-Schnittstelle, einer WLAN-Schnittstelle, einer UMTS-Schnittstelle und/oder einer NFC-Schnittstelle o.dgl. verstanden werden. Alternativ oder zusätzlich kann eine Schnittstelle der Kommunikationseinheit zumindest teilweise durch die Induktionsspule der Induktionseinheit realisiert sein. Insbesondere ist die Kommunikationseinheit dazu vorgesehen, mit einer Kommunikationseinheit eines externen Energiesenders und/oder -empfängers Informationen auszutauschen, auf deren Grundlage die Induktionsschnittstelle in den Sendebetriebszustand oder den Empfangsbetriebszustand geschaltet wird. Insbesondere können über die Kommunikationseinheit Informationen bezüglich eines Ladezustands der Akkuzelleneinheit oder einer Ladepriorisierung ausgetauscht werden. Hierdurch kann ein Betriebszustand der Induktionsschnittstelle vorteilhaft in Abhängigkeit von einem externen Energiesender und/oder -empfänger geschaltet werden. Ferner wird vorgeschlagen, dass die Induktionsschnittstelle dazu vorgesehen ist, sich adaptiv an eine Induktionsschnittstelle eines externen induktiven Energiesenders und/oder -empfängers anzupassen. Insbesondere ist die Induktionsschnittstelle dazu vorgesehen, sich insbesondere hinsichtlich einer Übertragungsfrequenz und/oder einer Übertragungsleistung selbständig, insbesondere ohne einen Eingriff eines Bedieners, an eine Induktionsschnittstelle eines externen induktiven Energiesenders und/oder -empfängers anzupassen. Hierdurch kann eine vorteilhaft flexible und/oder universelle Einsetzbarkeit der Akkuvorrichtung erreicht werden. In einer Weiterbildung der Erfindung wird vorgeschlagen, dass die Akkuvorrichtung eine Steuer- und/oder Regeleinheit aufweist, welche während eines Sende- und/oder Empfangsbetriebszustands der Induktionsschnittstelle zumindest zur Durchführung einer Fremdobjekterkennung vorgesehen ist. Unter einer„Fremdobjekterkennung" soll in diesem Zusammenhang insbesondere die Erkennung und/oder die Überprüfung eines Vorhandenseins von Fremdobjekten, insbesondere in einer Umgebung der Induktionsladevorrichtung und/oder der Akkuvorrichtung, verstanden werden. Vorzugsweise soll darunter insbesondere das Erkennen und/oder das Überprüfen eines Vorhandenseins von Fremdobjekten, die in einem Kontaktbereich zwischen der Induktionsladevorrichtung und einer Akkuvorrichtung angeordnet sind und in einem Ladebe- trieb einen Ladevorgang beeinträchtigen können, verstanden werden. Unter„Fremdobjekten" sollen dabei insbesondere metallische und/oder magnetische Bauteile, Teilstücke oder andere Objekte verstanden werden. Hierdurch kann eine vorteilhaft sichere Energieübertragung gewährleistet werden. Ferner wird ein System mit zwei erfindungsgemäßen Akkuvorrichtungen vorgeschlagen. Bevorzugt befindet sich die Induktionsschnittstelle einer ersten Akkuvorrichtung im Sendebetriebszustand und die Induktionsschnittstelle einer zweiten Akkuvorrichtung im Empfangsbetriebszustand, wobei die erste Akkuvorrichtung dazu vorgesehen ist, elektrische Energie auf die zweite Akkuvorrichtung zu übertragen. Hierdurch kann vorteilhaft elektrische Energie von einer Akkuvorrichtung auf eine weitere Akkuvorrichtung übertragen werden. Energy transmitter and / or receiver to communicate. In this context, a "communication unit" is to be understood as meaning in particular a unit which is provided for exchanging data. <br/><br/> In particular, the communication unit has at least one information input and at least one information output However, this is to be understood as meaning a communication unit with a wireless interface such as, for example, a Bluetooth interface, a WLAN interface, a UMTS interface and / or an NFC interface, etc. Alternatively or additionally, an interface of the communication unit may be at least partially implemented In particular, the communication unit is intended to exchange information with a communication unit of an external energy transmitter and / or receiver on the basis of which the In the transmission interface or the receive operating state is switched. In particular, information relating to a charging state of the battery cell unit or a charging prioritization can be exchanged via the communication unit. As a result, an operating state of the induction interface can advantageously be switched as a function of an external energy transmitter and / or receiver. It is also proposed that the induction interface is intended to adaptively adapt to an induction interface of an external inductive energy transmitter and / or receiver. In particular, the induction interface is intended to adapt itself, in particular with regard to a transmission frequency and / or a transmission power, in particular without intervention of an operator, to an induction interface of an external inductive energy transmitter and / or receiver. This allows an advantageously flexible and / or universal applicability of the battery device can be achieved. In a development of the invention, it is proposed that the battery device has a control and / or regulating unit which is provided during a transmission and / or reception operating state of the induction interface at least for carrying out a foreign object detection. In this context, the term "foreign object recognition" should be understood to mean, in particular, the detection and / or verification of the presence of foreign objects, in particular in an environment of the induction charging device and / or the rechargeable battery device foreign objects which are arranged in a contact region between the induction charging device and a rechargeable battery device and which can impair a charging process in a charging operation are understood to mean "foreign objects" in particular metal and / or magnetic components, parts or other objects. As a result, an advantageously secure energy transfer can be ensured. Furthermore, a system with two battery devices according to the invention is proposed. Preferably, the induction interface of a first rechargeable battery device is in the transmission operating state and the induction interface of a second rechargeable battery device in the reception operating state, wherein the first rechargeable battery device is provided to transmit electrical energy to the second rechargeable battery device. As a result, electrical energy can advantageously be transferred from a rechargeable battery device to a further rechargeable battery device.
Zudem wird ein Verfahren zum Betrieb einer Akkuvorrichtung mit einer Akkuzelleneinheit und zumindest einer Induktionsschnittstelle, mittels welcher in zumindest einem Empfangsbetriebszustand eine elektrische Energie zur Aufladung der Akkuzelleneinheit mittels Induktion empfangen wird, vorgeschlagen, bei welchem in zumindest einem Sendebetriebszustand in der Akkuzelleneinheit gespeicherte elektrische Energie mittels der Induktionseinheit mittels Induktion gesendet wird. Hierdurch kann die Akkuvorrichtung vorteilhaft sowohl mittels der Induktionsschnittstelle induktiv geladen werden, als auch mittels der Induktionsschnittstelle elektrische Energie induktiv an einen externen Energieempfänger, insbesondere eine weitere Akkuvorrichtung, übertragen. In addition, a method for operating a rechargeable battery device having a rechargeable battery cell unit and at least one induction interface, by means of which in at least one receiving operating state an electrical energy for charging the rechargeable battery cell unit is received by induction, is proposed, in which at least one Transmission mode is stored in the battery cell unit stored electrical energy by means of the induction unit by means of induction. As a result, the battery device can advantageously be inductively charged both by means of the induction interface, as well as by means of the induction interface inductively transmit electrical energy to an external power receiver, in particular a further battery device.
Ferner wird ein Elektrogerät mit zumindest einer erfindungsgemäßen Akkuvorrichtung vorgeschlagen. Insbesondere kann die Akkuvorrichtung in dem Elektrogerät in einem Aufnahmeraum des Elektrogeräts aufgenommen oder an dem Elektrogerät lösbar befestigt sein. Unter einem„Elektrogerät" soll in diesem Zusammenhang insbesondere ein durch einen Benutzer tragbares Elektrogerät, wie beispielswiese ein Smartphone, ein Tablet, ein Laptop, ein E-Book-Reader, eine Handwerkzeugmachine o.dgl., verstanden werden, welches zumindest teilweise durch die Akkuvorrichtung mit elektrischer Energie versogt wird. Hierdurch kann ein vorteilhafte Funktionalität, insbesondere hinsichtlich einer induktiven Aufnahme und/oder Abgabe von elektrischer Energie, erreicht werden. Furthermore, an electrical appliance with at least one battery device according to the invention is proposed. In particular, the rechargeable battery device can be accommodated in the electrical device in a receiving space of the electrical device or be releasably attached to the electrical device. In this context, an "electrical appliance" is to be understood, in particular, as meaning a portable electrical appliance, such as a smartphone, a tablet, a laptop, an e-book reader, a handheld power tool or the like, which is at least partially accessible through the In this way, an advantageous functionality, in particular with regard to an inductive absorption and / or release of electrical energy, can be achieved.
Die erfindungsgemäße Akkuvorrichtung soll hierbei nicht auf die oben beschriebene Anwendung und Ausführungsform beschränkt sein. Insbesondere kann die erfindungsgemäße Akkuvorrichtung zu einer Erfüllung einer hierin beschriebenen Funktionsweise eine von einer hierin genannten Anzahl von einzelnen Elementen, Bauteilen und Einheiten abweichende Anzahl aufweisen. The battery device according to the invention should not be limited to the application and embodiment described above. In particular, the rechargeable battery device according to the invention may have a different number from a number of individual elements, components and units mentioned herein for fulfilling a mode of operation described herein.
Zeichnung drawing
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen: Show it:
Fig. 1 eine schematische Darstellung einer Akkuvorrichtung mit einer Akkuzelleneinheit und einer Induktionsschnittstelle und Fig. 2 eine schematische Ansicht eines Systems mit zwei Akkuvorrichtungen. Fig. 1 is a schematic representation of a battery device with a battery cell unit and an induction interface and Fig. 2 is a schematic view of a system with two battery devices.
Beschreibung des Ausführungsbeispiels Description of the embodiment
Figur 1 zeigt eine schematische Darstellung einer Akkuvorrichtung 10. Die Akkuvorrichtung 10 ist insbesondere zu einer Versorgung eines hier nicht dargestellten Elektrogeräts mit elektrischer Energie vorgesehen. Die Akkuvorrichtung 10 weist eine Akkuzelleneinheit 12 und eine Induktionsschnittstelle 14 auf. Die Induktionsschnittstelle 14 kann in einem Empfangsbetriebszustand und in einem Sendebetriebszustand betrieben werden. Die Induktionsschnittstelle 14 ist in dem Empfangsbetriebszustand dazu vorgesehen, elektrische Energie zur Aufladung der Akkuzelleneinheit 12 mittels Induktion zu empfangen. Im Sendebetriebszustand ist die Induktionsschnittstelle 14 dazu vorgesehen, in der Akkuzelleneinheit 12 gespeicherte elektrische Energie mittels In- duktion zu senden. Die Induktionsschnittstelle 14 weist eine Induktionsspule 16 auf, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle 14 dazu vorgesehen ist, elektrische Energie zu empfangen oder zu senden. Die Induktionsspule 16 ist im Sendebetriebszustand der Induktionsschnittstelle 14 dazu vorgesehen, elektrische Energie abzustrahlen. Im Empfangsbetriebszustand der Induktionsschnittstelle 14 ist die Induktionsspule 16 dazu vorgesehen elektrische Energie zu empfangen. 1 shows a schematic representation of a rechargeable battery device 10. The rechargeable battery device 10 is provided in particular for supplying an electrical device, not shown here, with electrical energy. The battery device 10 has a battery cell unit 12 and an induction interface 14. The induction interface 14 may be operated in a receive mode and in a transmit mode. The induction interface 14 is provided in the receiving operation state to receive electric power for charging the battery cell unit 12 by induction. In the transmission operating state, the induction interface 14 is provided to send electrical energy stored in the battery cell unit 12 by means of induction. The induction interface 14 has an induction coil 16, which is provided in response to an operating state of the induction interface 14 to receive or send electrical energy. The induction coil 16 is provided in the transmission mode of the induction interface 14 to radiate electrical energy. In the reception operating state of the induction interface 14, the induction coil 16 is intended to receive electrical energy.
Die Induktionsschnittstelle 14 umfasst eine Elektronikeinheit 18, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle 14 als Wechselrichter 20 oder als Gleichrichter 22 betreibbar ist. Insbesondere kann die Elektronikeinheit 18 zumindest im Wesentlichen von einer Vollbrückenschaltung, insbesondere von einerThe induction interface 14 comprises an electronic unit 18 which can be operated as an inverter 20 or as a rectifier 22 as a function of an operating state of the induction interface 14. In particular, the electronic unit 18 can at least essentially be a full bridge circuit, in particular a
MOSFET-Vollbrückenschaltung, gebildet sein. Die Betriebsrichtung und/oder Funktionsrichtung der Elektronikeinheit 18 ist in Abhängigkeit vom Betriebszustand der Induktionsschnittstelle 14 umkehrbar. Im Sendebetriebszustand der Induktionsschnittstelle 14 wird die Elektronikeinheit 18 als ein Wechselrichter 20 betrieben. Der Wechsel- richter 20 ist dazu vorgesehen, im Sendebetriebszustand der Induktionsschnittstelle 14 eine Gleichspannung der Akkuzelleneinheit 12 für die Induktionsspule 16 in eine Wechselspannung zu wandeln, um eine induktive Energieübertragung zu ermöglichen. Im Empfangsbetriebszustand der Induktionsschnittstelle 14 wird die Elektronikeinheit 18 als ein Gleichrichter 22 betrieben. Der Gleichrichter 22 ist dazu vorgesehen, im Empfangsbetriebszustand der Induktionsschnittstelle 14 eine an der Induktionsspule 16 induzierte Wechselspannung für die Akkuzelleneinheit 12 in eine Gleichspannung zu wandeln, um ein Aufladen der Akkuzelleneinheit 12 zu ermöglichen. Die Akkuvorrichtung 10 weist eine Steuer- und/oder Regeleinheit 24 auf, welche zumindest dazu vorgesehen ist, die Induktionsschnittstelle 14 automatisch und/oder in Abhängigkeit von einer Bedienerauswahl in den Sendebetriebszustand oder den Empfangsbetriebszu- stand zu schalten. Die Steuer- und/oder Regeleinheit 24 ist in einem Sendebetriebszustand der Induktionsschnittstelle 14 dazu vorgesehen, die Elektronikeinheit 18 als Wechselrichter 20 anzusteuern. Im Empfangsbetnebszustand der Induktionsschnittstelle 14 ist die Steuer- und/oder Regeleinheit 24 dazu vorgesehen, die Elektronikeinheit 18 als Gleichrichter 22 anzusteuern. Die Schaltung der Betriebszustände der Indukti- onsschnittstelle 14 kann insbesondere automatisch in Abhängigkeit von einem Ladezustand der Akkuzelleneinheit 12 erfolgen. Insbesondere kann die Induktionsschnittstelle 14 bei einem unterschreiten eines Ladegrenzwerts der Akkuzelleneinheit 12 automatisch in den Empfangsbetnebszustand geschaltet werden. Ferner kann beispielsweise ein Sendebetriebszustand der Induktionsschnittstelle 14 bei einem Unterschrei- ten eines Ladegrenzwerts der Akkuzelleneinheit 12 automatisch beendet werden und/oder ein Schalten der Induktionsschnittstelle 14 in den Sendebetriebszustand automatisch unterbunden werden. Alternativ oder zusätzlich kann ein Schalten der Betriebszustände der Induktionsschnittstelle 14 durch eine manuelle Eingabe eines Be- dieners, beispielsweise über einen Wahlschalter 38, erfolgen. MOSFET full bridge circuit, be formed. The operating direction and / or functional direction of the electronic unit 18 is reversible depending on the operating state of the induction interface 14. In the transmission operating state of the induction interface 14, the electronics unit 18 is operated as an inverter 20. The inverter 20 is provided in the transmission operating state of the induction interface 14 to convert a DC voltage of the battery cell unit 12 for the induction coil 16 into an AC voltage in order to enable an inductive energy transmission. In the reception operating state of the induction interface 14, the electronic unit 18 is operated as a rectifier 22. The rectifier 22 is provided, in the receiving operating state of the induction interface 14, an alternating voltage induced at the induction coil 16 for the battery cell unit 12 in a DC voltage to allow charging of the battery cell unit 12. The rechargeable battery device 10 has a control and / or regulating unit 24, which is provided at least to switch the induction interface 14 automatically and / or depending on an operator selection into the transmission operating state or the reception operating state. The control and / or regulating unit 24 is provided in a transmission operating state of the induction interface 14 to control the electronic unit 18 as an inverter 20. In the reception state of the induction interface 14, the control and / or regulating unit 24 is provided to control the electronic unit 18 as a rectifier 22. In particular, the switching of the operating states of the induction interface 14 can take place automatically as a function of a charging state of the battery cell unit 12. In particular, the induction interface 14 can automatically be switched to the reception operating state when the battery cell unit 12 falls below a charging limit value. Furthermore, for example, a transmission operating state of the induction interface 14 can be terminated automatically when a charging limit value of the battery cell unit 12 is undershot and / or switching of the induction interface 14 into the transmission operating state is automatically prevented. Alternatively or additionally, a switching of the operating states of the induction interface 14 by a manual input of a user, for example via a selector switch 38, take place.
Die Steuer- und/oder Regeleinheit 24 ist ferner während des Sende- und/oder des Empfangsbetriebszustands der Induktionsschnittstelle 14 zur Durchführung einer Fremdobjekterkennung vorgesehen. Die Fremdobjekterkennung ist dazu vorgesehen, Fremdobjekte, die den Sendebetriebszustand oder den Empfangsbetnebszustand der Induktionsschnittstelle 14 stören oder eine Gefährdung darstellen, zu erfassen und gegebenenfalls einen Betrieb zu unterbrechen. Die Steuer- und/oder Regeleinheit 24 erfasst dabei zur Fremdobjekterkennung eine Gütedifferenz zwischen einer gespeicherten Sollgüte und einer Istgüte eines Schwingkreises der Induktionsschnittstelle 14 und vergleicht diese mit einer gespeicherten, zulässigen Gütedifferenz. The control and / or regulating unit 24 is further provided during the transmission and / or the reception operating state of the induction interface 14 for performing a foreign object detection. The foreign object detection is intended to detect foreign objects that interfere with the transmission operating state or the Empfangsbetnebszustand the induction interface 14 or pose a threat, and possibly interrupt an operation. The control and / or regulating unit 24 detects a difference in quality between a stored nominal quality and an actual quality of a resonant circuit of the induction interface 14 for foreign object detection and compares this with a stored, permissible difference in quality.
Die Akkuvorrichtung 10 weist ferner eine Kommunikationseinheit 26 auf, welche dazu vorgesehen ist, zur Festlegung eines Betriebszustands der Induktionsschnittstelle 14 mit einer Kommunikationseinheit 28 eines externen induktiven Energiesenders und/oder -empfängers 30 zu kommunizieren (vgl. Figur 2). Insbesondere ist die Kom- munikationseinheit 28 dazu vorsehen, mit der Kommunikationseinheit 28 des externenThe rechargeable battery device 10 furthermore has a communication unit 26 which is provided to communicate with a communication unit 28 of an external inductive energy transmitter and / or receiver 30 in order to establish an operating state of the induction interface 14 (see FIG. In particular, the communication unit 28 is intended to communicate with the communication unit 28 of the external
Energiesenders und/oder -empfängers 30 Informationen 42 auszutauschen, auf deren Grundlage die Induktionsschnittstelle 14 durch die Steuer- und/oder Regeleinheit 24 insbesondere automatisch in den Sendebetriebszustand oder den Empfangsbetnebszustand geschaltet wird. Insbesondere können über die Kommunikationseinheit 26 Informationen 42 bezüglich eines Ladezustands der Akkuzelleneinheit 12 oder einer Ladepriorisierung mit der Kommunikationseinheit 28 des externen Energiesenders und/oder -empfängers 30 ausgetauscht werden. Die Induktionsschnittstelle 14 ist ferner dazu vorgesehen, sich adaptiv, insbesondere hinsichtlich einer Übertragungsfrequenz und/oder einer Übertragungsleistung, an eine Induktionsschnittstelle 32 eines externen induktiven Energiesenders und/oder -empfängers 30 anzupassen (vgl. Figur 2). Energy transmitter and / or receiver 30 information 42, on whose Based on the induction interface 14 is switched by the control and / or regulating unit 24 in particular automatically in the transmission mode or the Empfangsbetnebszustand. In particular, via the communication unit 26, information 42 regarding a state of charge of the battery cell unit 12 or a charge prioritization can be exchanged with the communication unit 28 of the external energy transmitter and / or receiver 30. The induction interface 14 is further provided adaptively, in particular with regard to a transmission frequency and / or a transmission power, to an induction interface 32 of an external inductive energy transmitter and / or receiver 30 (see FIG.
Figur 2 zeigt ein System 36 mit einer Akkuvorrichtung 10 und einem externen Energiesender oder -empfänger 30, welcher hier als eine weitere Akkuvorrichtung 34 ausgebildet ist. Die Akkuvorrichtung 10 und die weitere Akkuvorrichtung 34 sind zumindest funktional zumindest im Wesentlichen identisch ausgebildet. Insbesondere werden zwischen der Kommunikationseinheit 26 der Akkuvorrichtung 10 und der Kommunikationseinheit 28 des externen Energiesenders und/oder -empfängers 30 Informationen 42 ausgetauscht, auf deren Grundlage die Induktionsschnittstellen 14, 32 durch die jeweiligen Steuer- und/oder Regeleinheiten 24, 40 insbesondere automatisch in den Sendebetriebszustand oder den Empfangsbetnebszustand geschaltet werden. Alternativ oder zusätzlich kann ein Schalten der Betriebszustände der Induktionsschnittstellen 14, 32 durch eine manuelle Eingabe eines Bedieners, beispielsweise über Wahlschalter 38, 44, erfolgen. Befindet sich die Induktionsschnittstelle 14 der Akkuvorrichtung 10 im Sendebetriebszustand und die Induktionsschnittstelle 32 der weiteren Akkuvorrich- tung 34 sich im Empfangsbetnebszustand, so wird elektrische Energie von der Akkuvorrichtung 10 auf die weitere Akkuvorrichtung 34 übertragen. Befindet sich die Induktionsschnittstelle 14 der Akkuvorrichtung 10 im Empfangsbetnebszustand und die Induktionsschnittstelle 32 der weiteren Akkuvorrichtung 34 sich im Sendebetriebszustand, so wird elektrische Energie von der weiteren Akkuvorrichtung 34 auf die Ak- kuvorrichtung 10 übertragen. FIG. 2 shows a system 36 with a rechargeable battery device 10 and an external energy transmitter or receiver 30, which is designed here as a further rechargeable battery device 34. The battery device 10 and the further battery device 34 are at least functionally at least substantially identical. In particular, information 42 is exchanged between the communication unit 26 of the rechargeable battery device 10 and the communication unit 28 of the external energy transmitter and / or receiver 30, on the basis of which the induction interfaces 14, 32 are automatically inserted into the respective control and / or regulating units 24, 40 Transmission mode or the Empfangsbetnebszustand be switched. Alternatively or additionally, a switching of the operating states of the induction interfaces 14, 32 by a manual input of an operator, for example via selector 38, 44, take place. If the induction interface 14 of the rechargeable battery device 10 is in the transmission operating state and the induction interface 32 of the further rechargeable battery device 34 is in the reception state, electrical energy is transmitted from the rechargeable battery device 10 to the further rechargeable battery device 34. If the induction interface 14 of the rechargeable battery device 10 is in the reception state and the induction interface 32 of the further rechargeable battery device 34 is in the transmission operating state, electrical energy is transmitted from the further rechargeable battery device 34 to the battery device 10.

Claims

Ansprüche  claims
1 . Akkuvorrichtung mit einer Akkuzelleneinheit (12) und zumindest einer Induktionsschnittstelle (14), welche in zumindest einem Empfangsbetriebszustand dazu vorgesehen ist, eine elektrische Energie zur Aufladung der Akkuzelleneinheit (12) mittels Induktion zu empfangen, dadurch gekennzeichnet, dass die Induktionsschnittstelle (14) in zumindest einem Sendebetriebszustand dazu vorgesehen ist, in der Akkuzelleneinheit (12) gespeicherte elektrische Energie mittels Induktion zu senden. 1 . Rechargeable battery device with a rechargeable battery cell unit (12) and at least one induction interface (14), which is provided in at least one receiving operating condition to receive an electrical energy for charging the rechargeable battery cell unit (12) by means of induction, characterized in that the induction interface (14) in at least a transmission mode is provided to send in the battery cell unit (12) stored electrical energy by induction.
Akkuvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass die Induktionsschnittstelle (14) eine Induktionsspule (16) aufweist, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle (14) dazu vorgesehen ist, elektrische Energie zu empfangen oder zu senden. Battery device according to claim 1, characterized in that the induction interface (14) comprises an induction coil (16) which is provided in response to an operating state of the induction interface (14) to receive or transmit electrical energy.
Akkuvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass dieBattery device according to claim 1 or 2, characterized in that the
Induktionsschnittstelle (14) zumindest eine Elektronikeinheit (18) umfasst, welche in Abhängigkeit von einem Betriebszustand der Induktionsschnittstelle (14) als Wechselrichter (20) oder als Gleichrichter (22) betreibbar ist. Induction interface (14) comprises at least one electronic unit (18) which is operable as an inverter (20) or as a rectifier (22) in dependence on an operating state of the induction interface (14).
Akkuvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Steuer- und/oder Regeleinheit (24), welche zumindest dazu vorgesehen ist, die Induktionsschnittstelle (14) automatisch und/oder in Abhängigkeit von einer Bedienerauswahl in den Sendebetriebszustand oder den Empfangsbetriebszustand zu schalten. Battery device according to one of the preceding claims, characterized by a control and / or regulating unit (24), which is provided at least to switch the induction interface (14) automatically and / or in response to an operator selection in the transmission mode or the receiving mode.
Akkuvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Kommunikationseinheit (26), welche dazu vorgesehen ist, zur Festlegung eines Betriebszustands der Induktionsschnittstelle (14) mit einer Kommunikationseinheit (28) eines externen induktiven Energiesenders und/oder -empfängers (30) zu kommunizieren. Rechargeable battery device according to one of the preceding claims, characterized by a communication unit (26) which is provided for communicating an operating state of the induction interface (14) with a communication unit (28) of an external inductive energy transmitter and / or receiver (30).
6. Akkuvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Induktionsschnittstelle (14) dazu vorgesehen ist, sich adaptiv an eine Induktionsschnittstelle (32) eines externen induktiven Energiesenders und/oder -empfängers (30) anzupassen. 6. Battery device according to one of the preceding claims, characterized in that the induction interface (14) is adapted to adaptively adapt to an induction interface (32) of an external inductive energy transmitter and / or receiver (30).
7. Akkuvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Steuer- und/oder Regeleinheit (24), welche während eines Sende- und/oder Empfangsbetriebszustands der Induktionsschnittstelle (14) zumindest zur Durchführung einer Fremdobjekterkennung vorgesehen ist. 7. Battery device according to one of the preceding claims, characterized by a control and / or regulating unit (24), which is provided during a transmission and / or reception operating state of the induction interface (14) at least for performing a Fremdobjekterkennung.
8. System mit zwei Akkuvorrichtungen (10, 34) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Induktionsschnittstelle (14) einer ersten Akkuvorrichtung (10) sich im Sendebetriebszustands befindet und die Induktionsschnittstelle (32) einer zweiten Akkuvorrichtung (34) sich im Empfangsbetriebszu- stand befindet, wobei die erste Akkuvorrichtung (10) dazu vorgesehen ist, elektrische Energie auf die zweite Akkuvorrichtung (34) zu übertragen. 8. System with two battery devices (10, 34) according to one of claims 1 to 7, characterized in that the induction interface (14) of a first battery device (10) is in the transmission operating state and the induction interface (32) of a second battery device (34). is in the receiving operating state, wherein the first battery device (10) is provided to transmit electrical energy to the second battery device (34).
9. Verfahren zum Betrieb einer Akkuvorrichtung (10), insbesondere nach einem der Ansprüche 1 bis 7, mit einer Akkuzelleneinheit (12) und zumindest einer Induktionsschnittstelle (14), mittels welcher in zumindest einem Empfangsbetriebszu- stand eine elektrische Energie zur Aufladung der Akkuzelleneinheit (12) mittels Induktion empfangen wird, dadurch gekennzeichnet, dass in zumindest einem Sendebetriebszustand in der Akkuzelleneinheit (12) gespeicherte elektrische Energie mittels der Induktionsschnittstelle (14) mittels Induktion gesendet wird. 9. A method for operating a rechargeable battery device (10), in particular according to one of claims 1 to 7, with a rechargeable battery cell unit (12) and at least one induction interface (14), by means of which in at least one receiving operating state an electrical energy for charging the rechargeable battery cell unit ( 12) is received by means of induction, characterized in that electrical energy stored in at least one transmission operating state in the battery cell unit (12) is sent by means of the induction interface (14) by means of induction.
10. Elektrogerät mit zumindest einer Akkuvorrichtung (10) nach einem der Ansprüche 1 bis 7. 10. Electrical appliance with at least one battery device (10) according to one of claims 1 to 7.
PCT/EP2018/052521 2017-02-10 2018-02-01 Inductive battery-charging device WO2018145992A1 (en)

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