EP3472845A1 - Ladevorrichtung - Google Patents
LadevorrichtungInfo
- Publication number
- EP3472845A1 EP3472845A1 EP17731829.2A EP17731829A EP3472845A1 EP 3472845 A1 EP3472845 A1 EP 3472845A1 EP 17731829 A EP17731829 A EP 17731829A EP 3472845 A1 EP3472845 A1 EP 3472845A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- charging
- charging device
- inductive
- inverter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- 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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
Definitions
- inductive battery charging device for a hand tool with at least one inverter unit which is provided for generating an AC voltage from a DC supply voltage and at least one AC voltage output for providing the AC voltage, and having at least one charging inductance for wireless charging of at least one energy storage been proposed.
- the invention relates to an inductive charging device, in particular an inductive battery charging device, in particular for a hand tool, with at least one inverter unit, which is provided for generating an AC voltage from a DC supply voltage and at least one AC output for providing the AC voltage has, and at least a charging inductance for wireless charging of at least one energy store.
- the inductive charging device has at least one transformer which comprises at least one primary inductance connected to the alternating voltage output, in particular a voltage-holding device, and at least one secondary inductance connected to the charging inductor in a voltage-sustaining manner.
- Provided is to be understood to mean in particular specially programmed, designed and / or equipped.Assuming that an object is intended for a specific function should in particular be understood to mean that the object determines this object. te function fulfilled in at least one application and / or operating state and / or performs.
- an "inductive charging device” should be understood to mean, in particular, a functionally advantageous part, in particular a subassembly, of a wireless charger.
- the inductive charging device may also comprise the entire wireless charger
- the charging device is particularly intended to at least partially transmit electrical energy, in particular an electrical energy supply, to the energy store, in particular by means of at least one inductive coupling provided during charging of the energy storage energy transfer over distances of at least 0.1 mm, advantageously of at least 1 mm, more preferably of at least 1 cm and especially before to allow at least 10 cm.
- the energy store has at least one battery, particularly advantageously at least one, preferably at least 100 times, rechargeable battery, such as a battery pack.
- the energy store is designed as a battery pack.
- the energy store at least one supercapacitor and / or at least one capacitor and / or at least a combination of at least one electrolyzer and a fuel cell and a corresponding tank for a reaction gas and / or a reaction liquid such as hydrogen, methane, methanol or the like includes.
- the energy store comprises at least one receiver coil, which is preferably part of a receiver circuit, in particular connected to the battery, and which is particularly preferably provided for receiving an energy transferred during charging.
- a "hand tool” is in this context, in particular a work piece processing machine, but advantageously a drill, a drill and / or hammer, a cordless screwdriver, an electric screwdriver, a chisel, a saw, a planer, a screwdriver, a milling cutter, a
- the inverter unit comprises at least, in particular precisely, an inverter
- the inverter is particularly advantageously designed to convert the DC supply voltage into the AC voltage
- the inverter unit has at least one DC voltage input, which is provided for connection to the DC supply voltage.
- AC voltage should be understood in this context in particular as a voltage whose sign advantageously changes periodically as a function of time, in particular a sinusoidal voltage, deviations from a perfect sinusoidal course and / or an occurrence of at least one harmonic, in particular For example, rectangular and / or sawtooth-shaped and / or triangular and / or stepped and / or other, in particular periodic voltage curves are also conceivable.
- DC supply voltage should be understood in this context to mean, in particular, a DC voltage is advantageously provided for supplying the inductive charging device with electrical energy.
- a “DC voltage” is to be understood as meaning, in particular, a voltage which is at least substantially constant over time and whose temporal
- the DC voltage can be a voltage generated by rectification from an AC voltage and / or a mixed voltage, which is different in particular from a perfect DC voltage and comprises at least one AC voltage component, which in particular has an amplitude which is at most 10%, advantageously at most 5 % and particularly advantageously at most 1% of an amplitude of a DC voltage component of the DC voltage.
- the term "DC voltage” should therefore also include, in a manner known to a person skilled in the art, mixed voltages with a particularly negligible AC voltage component In this context, it should be understood in particular that a deviation from a predetermined value corresponds in particular to less than 15%, preferably less than 10% and particularly preferably less than 5% of the predetermined value.
- the charging inductance is designed as a charging coil.
- the charging inductance is particularly preferably part of a charging oscillating circuit which advantageously comprises at least one charging capacitor, in particular at least one charging capacitor, and / or has at least one resonant frequency.
- the transformer is formed by the primary inductance and the secondary inductance. Particularly advantageous Adhesively, the transformer is provided to change an amplitude of the AC voltage.
- a type of voltage remains unchanged through a connection between the electronic components, whereby it is advantageous to assume exactly three types of voltage, viz., That a first electronic component and a second electronic component are "connected to a voltage-connected state.” If, for example, an AC voltage is present at an output of the first component, then an input of the second component also has a DC voltage
- a picosartarthaltende connection is a direct electrical connection, in particular only at least one electrical resistance and / or at least one component for stabilization, such as a diode connected in a DC voltage connection or connected in an AC connection high-pass and / or low-pass and / or bandpass and preferably no rectifier and / or inverter.
- the inventive design of the inductive charging device can be achieved in particular advantageous properties in terms of a construction.
- an inductive charging device can be provided with a simple and / or cost-effective and / or efficient design.
- a number of Umnapsin be reduced.
- a number of required high-performance components such as, for example, high-voltage MOSFETs and / or high-voltage H-bridges can be reduced.
- an inductive charging device without a high-performance MOSFET and / or without a high-voltage H-bridge can advantageously be provided.
- a simplicity of a required control software and / or a reduced programming effort can be achieved.
- the AC voltage output is connected to the charging inductance free of an intermediate rectifier.
- the inductive charging device and in particular a wireless charger according to the invention are free of a rectifier.
- the transformer is provided for increasing the AC voltage to a charging AC voltage.
- an effective value of the AC voltage is at least substantially 230 V.
- an amplitude of the AC voltage is at least substantially 325 V.
- the AC voltage is applied to the charging inductor and / or to the charging oscillator.
- a frequency of the charging AC voltage at least substantially corresponds to the resonant frequency of the charging oscillating circuit.
- the inverter unit is provided to at least partially adapt at least one AC voltage parameter of the AC voltage to at least one charging parameter of the store during charging of the energy store.
- the inductive charging device has a control unit which is provided for controlling the inverter unit as a function of the charging parameter.
- a "control unit” is to be understood as meaning, in particular, an electrical and / or electronic unit having at least one electronic control unit.
- Electric control unit is intended in particular to mean a unit having a computer unit and a memory unit as well as an operating and control unit stored in the memory unit - and / or control program, which is in particular intended to be executed by the arithmetic unit to be understood.
- control unit is provided to detect at least one state of charge, in particular based on the charging parameter.
- the inductive charging device has at least one sensor unit, which is provided for detecting the charging parameter and in particular for providing the charging parameter for the control unit.
- a charging voltage can advantageously be regulated as required.
- the AC voltage parameter is a frequency of the AC voltage.
- a frequency of the alternating voltage at least substantially corresponds to a frequency of the charging AC voltage.
- the inverter unit is provided to the AC voltage with a selectable, in particular variable To generate frequency.
- a frequency of a charging voltage can be influenced directly by an inverter and / or determined and / or modulated.
- the charging parameter is a resonant frequency during charging.
- the charging parameter is a resonant frequency of the charging oscillating circuit in the presence of the energy store.
- the inverter unit is provided for at least partially, in particular completely, adapting the AC voltage parameter to a detuning of the resonant frequency of the charging oscillator during charging.
- the inverter unit is intended to at least partially, in particular completely, equalize a frequency of the AC voltage of the resonant frequency of the charging oscillating circuit during charging.
- the control unit is provided, the AC voltage parameter at least based on a comparison of an actual frequency of the AC voltage with a
- the inverter unit is designed to be operable with a DC supply voltage of at least 1 V, advantageously of at least 2 V, particularly advantageously of at least 5 V, preferably of at least 10 V and particularly preferably of at least 12 V.
- the inverter unit is designed with a DC supply voltage of at most 500 V, advantageously of at most 200 V, particularly advantageously of at most 100 V, preferably of at most 50 V and particularly preferably of not more than 36 V operable.
- a DC supply voltage of at most 500 V advantageously of at most 200 V, particularly advantageously of at most 100 V, preferably of at most 50 V and particularly preferably of not more than 36 V operable.
- the inverter unit with a DC supply voltage of at least, in particular In particular, exactly 12 V or at least, in particular exactly 24 V is designed to be operable, in particular with a provided by a vehicle, such as a delivery truck or a car or a truck DC supply voltage.
- a vehicle such as a delivery truck or a car or a truck DC supply voltage.
- other DC supply voltages such as 9 V or 18 V or 36 V or 48 V or about 50 V or about 100 V or about 200 V or about 500 V are conceivable.
- the inverter unit is provided for connection to a car battery and / or a vehicle electrical system of a vehicle, such as a delivery van or a car or a truck. In this way, advantageously, a universally and / or mobile deployable charging device can be provided.
- the inverter unit has at least, in particular precisely, a push-pull inverter.
- the inverter is designed as the push-pull inverter. This advantageously makes it possible to provide a cost-effective and / or easy-to-manufacture inductive charging device.
- the inverter unit has at least one LLC inverter.
- the inverter is designed as the LLC inverter.
- the LLC inverter is configured as an LLC resonant converter.
- the LLC inverter has at least one first inductance connected in parallel with the primary inductance.
- the LLC inverter has at least one second inductance connected in series with the primary inductance.
- the LLC inverter preferably has at least one capacitor connected in series with the primary inductance and the first inductance connected in parallel thereto.
- the inverter unit has at least one H bridge inverter.
- the inverter is designed as the H-bridge inverter.
- the inverter unit comprises at least one H-bridge.
- wireless charging and / or construction and / or cost efficiency can be achieved with a system comprising an inductive charging device according to the invention and at least one power supply device.
- memory which is intended to be charged wirelessly by means of the charging device comprises.
- the invention further relates to a method for wireless charging of an energy storage device, in particular with an inductive charging device according to the invention, wherein an AC voltage is generated from a DC supply voltage and transformed immediately into an AC charge voltage, in particular without an intermediate step in which a voltage type is changed ,
- an inductive charging device can be provided with a simple and / or cost-effective and / or efficient design.
- a number of Umnapssön be reduced.
- a number of required high-performance components such as high-voltage
- MOSFETs and / or high-voltage H-bridges are reduced.
- an inductive charging device without a high-performance MOSFET and / or without a high-voltage H-bridge can advantageously be provided.
- a simplicity of a required control software and / or a reduced programming effort can be achieved.
- the inductive charging device according to the invention and / or the method according to the invention should not be limited to the application and embodiment described above.
- the inductive charging device according to the invention and / or the system according to the invention can 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 shows a system with an inductive charging device and an energy storage in a perspective view
- Fig. 4 is a schematic diagram of a second inductive charging device
- Fig. 5 is a schematic diagram of a third inductive charging device.
- FIG. 1 shows a system 34a with an inductive charging device 10a and with an energy store 20a, which is intended to be charged wirelessly by means of the charging device 10a.
- the energy storage 20a is designed as a battery pack of a hand tool 12a.
- the inductive charging device 10a is in the present case part of an inductive charger 36a.
- the inductive charging device 10a is formed in the present case as an inductive battery charging device for the power tool 12a.
- FIG. 2 shows a block diagram of the system 34a.
- the inductive charging device 10a has an inverter unit 14a, which is provided for generating an alternating voltage from a DC supply voltage.
- the inverter unit 14a has a DC input 40a provided for connection to the DC supply voltage.
- the inverter unit 14a has an AC output 16a for providing the AC voltage.
- the inductive charging device 10a has a charging inductance 18a for wireless charging of the energy accumulator 20a.
- the charging inductance 18 a is as a
- the inductive charging device 10a has a transformer formator 22a with a primary inductance 24a and with a secondary inductance 26a.
- the primary inductor 24a is connected to the AC output 16a.
- the primary inductance 24a is connected to the AC voltage output 16a in a voltage-sustaining manner.
- the primary inductor 24a is connected directly to the AC output 16a.
- the secondary inductance 26a is connected to the charging inductance 18a in a voltage-sustaining manner.
- the secondary inductance 26a is arranged in a charging circuit 41a, which also has the charging inductance 18a and a charging capacity 42a.
- the energy store 20a has a receiving inductance 44a, which in the case of wireless charging inductively couples to the charging inductance 18a of the inductive charging device 10a.
- FIG. 3 shows a schematic circuit diagram of the inductive charging device 10a.
- the inverter unit 14a has a push-pull inverter 28a.
- the inverter unit 14a has a first switching element 46a and a second switching element 48a.
- the first switching element 46a and the second switching element 48a are each formed as a MOSFET.
- the switching elements 46a, 48a can be actuated by a control unit 38a (cf., FIG. 1) of the inductive charging device 10a.
- the switching elements 46a, 48a are alternately and periodically switched.
- a first terminal of the first switching element 46a is connected to a ground 50a.
- a first terminal of the second switching element 48a is connected to the ground 50a.
- a second terminal of the first switching element 46a is connected to a first
- connection of the primary inductance 24 a connected.
- a second terminal of the second switching element 48a is connected to a second terminal of the primary inductor 24a.
- a third, in particular middle, connection of the primary inductance 24a is connected to the DC voltage input 40a.
- the primary inductance 24a is coupled to the secondary inductance 26a, in particular by means of a transformer core.
- a first terminal of the secondary inductor 26a is connected to a first terminal of the charging inductor 18a.
- a second terminal of the secondary inductance 26a is connected to a first terminal of the charging capacitor 42a.
- a second terminal of the charging capacitor 42a is connected to a second terminal of the charging inductance 18a.
- the AC output 16a is connected to the charging inductor 18a free from an intermediate rectifier.
- the transformer 22a is provided for boosting the AC voltage to a charging AC voltage.
- the inverter unit 14a is designed to be operable with a DC supply voltage of 12 V. But there are also interpretations of an inverter unit for others
- the AC voltage in the present case has an amplitude of about 17 volts.
- the AC charge voltage in the present case has an amplitude of about 325V.
- the inverter unit 14a is provided to at least partially adapt at least one AC voltage parameter of the AC voltage to at least one charging parameter of the store when the energy store 20a is being charged.
- the AC voltage parameter is a frequency of the AC voltage.
- the charging parameter is a resonance frequency in the charging, in particular a resonant frequency of the charging circuit 41 a in the presence of the energy storage 20a.
- the inverter unit 14a is provided to adjust the frequency of the AC voltage to the detuning.
- control unit 38 is provided to control the inverter unit 14a in dependence on the charging parameter.
- a method for wireless charging of the energy store 20a is carried out with the inductive charging device 10a, wherein the AC voltage is generated from the DC supply voltage, in particular by means of the inverter unit 14a, and transformed directly into the charging AC voltage, in particular by means of the transformer 22a.
- FIGS. 4 and 5 show two further embodiments of the invention.
- the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle to components and components denoted by the same reference numbers, to the drawings and / or the description of the other exemplary embodiments, in particular FIGS Figures 1 to 3, can be referenced.
- To distinguish the embodiments of the letter a is the reference numerals of the embodiment in the figures 1 to 3 adjusted.
- the letter a is replaced by the letters b and c.
- FIG. 4 shows a schematic circuit diagram of a second inductive charging device 10b.
- the second inductive charging device 10b has an inverter unit 14b, which is provided for generating an alternating voltage from a DC supply voltage.
- the inverter unit 14b has an AC voltage output 16b, which is provided for providing the AC voltage.
- the inverter unit 14b has an LLC inverter 30b.
- the LLC inverter 30b is configured as an LLC resonant converter.
- the LLC inverter 30b has a first switching element 46b and a second switching element 48b.
- a first terminal of the first switching element 46b is connected to a DC voltage input 40b of the inverter unit 14b.
- a second terminal of the switching element 46b is connected to a first terminal of the second switching element 48b.
- a second terminal of the second switching element 48b is connected to a ground 50b.
- a first terminal of a capacitor 52b of the LLC inverter 30b is connected to the ground 50b.
- a second terminal of the capacitor 52b of the LLC inverter 30b is connected to a first terminal of a first inductor 54b of the LLC inverter 30b.
- a second terminal of the first inductor 54b of the LLC inverter 30b is connected to a first terminal of a second inductor 56b of the LLC inverter 30b.
- a second terminal of the second inductor 56b of the LLC inverter 30b is connected to the first terminal of the second switching element 48b.
- a first terminal of a primary inductance 24b of a transformer 22b of the second inductive charging device 10b is connected to the second terminal of the first inductance 54b of the LLC inverter 30b.
- a second terminal of the primary inductor 24b is connected to the second terminal of the capacitor 52b of the LLC inverter 30b.
- the transformer 22b includes a secondary inductor 26b.
- the secondary inductance 26b is connected to a charging inductance 18b of the inductive charging device 10b in a manner similar to a voltage-sustaining one.
- FIG. 5 shows a schematic circuit diagram of a third inductive charging device 10c.
- the third inductive charging device 10c has an inverter unit 14c, which is provided for generating an alternating voltage from a DC supply voltage.
- the inverter unit 14c has an AC voltage output 16c which is provided to provide the AC voltage.
- the inverter unit 14c has a H-bridge inverter 32c.
- the H-bridge inverter 32c has a first switching element 46c, a second switching element 48c, a third switching element 58c and a fourth switching element 60c.
- a first terminal of the first switching element 46c is connected to a DC voltage input 40c of the inverter unit 14c.
- a second terminal of the first switching element 46c is connected to a first terminal of the second switching element 48c.
- a second terminal of the second switching element 48c is connected to a ground 50c.
- a first terminal of the third switching element 58c is connected to the ground 50c.
- a second terminal of the third switching element 58c is connected to a first terminal of the fourth switching element 60c.
- Switching element 60c is connected to the DC voltage input 40c.
- the second terminal of the first switching element 46c is connected to a first terminal of a primary inductance 24c of a transformer 22c of the third inductive charging device 10c.
- a second terminal of the primary inductance 24c is connected to the second terminal of the third switching element 58c.
- the switching elements 46c, 48c, 58c, 60c are periodically switched in the manner of an H-bridge circuit. In particular, in each case the first switching element 46c and the third switching element 58c or the second switching element 48c and the fourth switching element 60c are simultaneously switched.
- the transformer 22c includes a secondary inductor 26c.
- the secondary inductance 26c is connected to a charging inductance 18c of the inductive charging device 10c in a manner similar to a voltage-sustaining one.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016210639.2A DE102016210639A1 (de) | 2016-06-15 | 2016-06-15 | Ladevorrichtung |
PCT/EP2017/063802 WO2017215994A1 (de) | 2016-06-15 | 2017-06-07 | Ladevorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3472845A1 true EP3472845A1 (de) | 2019-04-24 |
Family
ID=59093533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17731829.2A Withdrawn EP3472845A1 (de) | 2016-06-15 | 2017-06-07 | Ladevorrichtung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3472845A1 (de) |
CN (1) | CN109565186A (de) |
DE (1) | DE102016210639A1 (de) |
WO (1) | WO2017215994A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020109931A1 (de) | 2020-04-09 | 2021-10-14 | Aesculap Ag | Kabellose medizinische Vorrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012112951A1 (de) * | 2012-12-21 | 2014-06-26 | Robert Bosch Gmbh | Induktionshandwerkzeugvorrichtung |
JPWO2014103430A1 (ja) * | 2012-12-27 | 2017-01-12 | 株式会社村田製作所 | ワイヤレス電力伝送システム |
DE102013217816A1 (de) * | 2013-09-06 | 2015-03-12 | Robert Bosch Gmbh | Vorrichtung zur induktiven Energieübertragung und Verfahren zum Betreiben einer Vorrichtung zur induktiven Energieübertragung |
CN105765845A (zh) * | 2013-11-27 | 2016-07-13 | 鲍尔拜普罗克西有限公司 | 用于感应电能发射器的反相器 |
EP2910403A1 (de) * | 2014-02-20 | 2015-08-26 | Brusa Elektronik AG | Induktive Ladevorrichtung |
-
2016
- 2016-06-15 DE DE102016210639.2A patent/DE102016210639A1/de not_active Withdrawn
-
2017
- 2017-06-07 EP EP17731829.2A patent/EP3472845A1/de not_active Withdrawn
- 2017-06-07 CN CN201780049804.2A patent/CN109565186A/zh active Pending
- 2017-06-07 WO PCT/EP2017/063802 patent/WO2017215994A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
CN109565186A (zh) | 2019-04-02 |
WO2017215994A1 (de) | 2017-12-21 |
DE102016210639A1 (de) | 2017-12-21 |
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