WO2015090905A1

WO2015090905A1 - Apparatus and method for wirelessly charging a battery-operated device

Info

Publication number: WO2015090905A1
Application number: PCT/EP2014/075917
Authority: WO
Inventors: Ulrich Schauer
Original assignee: Robert Bosch Gmbh
Priority date: 2013-12-20
Filing date: 2014-11-28
Publication date: 2015-06-25
Also published as: DE102013226995A1

Abstract

The invention relates to an apparatus (1) and a to method for wirelessly charging battery-operated devices (2, 3). The apparatus (1) comprises an accommodating unit (15) for accommodating a first charging device (11) and a second charging device (12), wherein the first charging device (11) is designed to wirelessly charge a battery-operated device (2, 3) in accordance with a predetermined first standard, wherein the second charging device (12) is designed to wirelessly charge a battery-operated device (2, 3) in accordance with a predetermined second standard, wherein the first standard is different from the second standard, and wherein the accommodating unit (15) is designed in such a way that the first charging device (11) can be used to wirelessly charge a first battery operated device (2) at least partially at the same time as the second charging device (12) is used to wirelessly charge a second battery-operated device (3).

Description

title

Apparatus and method for wirelessly charging a battery powered device

Description Technical area

The present invention relates to an apparatus and a method for wireless charging of battery-operated devices, which may in particular comprise a mobile phone. The device may for example be installed in a vehicle.

State of the art

Battery powered devices, such as minicomputers, portable medical devices, cell phones, etc., include a battery that may be rechargeable, such as an accumulator. Such devices should be reliable and quickly rechargeable, at the latest when the battery can no longer ensure adequate power to the device. For this there is in addition to a charge of the accumulator on a

Wired charger also the possibility of wireless charging or charging of the rechargeable battery.

A wireless charging of a rechargeable battery can for example be done with the principle of electromagnetic induction. Alternatively, the principle of a capacitive charge for wireless energy transfer and thus wireless charging of the rechargeable battery can be used. In the electromagnetic induction principle, a coil in a charging station is connected to an electrical power supply, such as an alternator. The battery-powered device also includes a coil which is arranged on the coil in the charging station, that an alternating field in the coil of the charging station, the coil of the charging station

battery-powered device. Due to electromagnetic induction, a coil is created on the battery of the battery-powered device

AC voltage usable for charging the rechargeable battery of the battery powered device. In this case, data can also be transmitted bidirectionally between the charging station and the battery-powered device, for example by using an amplitude modulation of the electromagnetic field produced in this principle. In the described wireless charging, the battery powered device may be in operation.

In the principle of capacitive charge for wireless energy transfer carriers of energy flow between the charging station and battery-powered device are metallic surfaces. Here, a metallic surface of the charging station and a metallic surface of the battery-powered device are arranged to each other such that the metallic surfaces form plates of a capacitor. Here, the metallic surface of the charging station is also connected to an electrical power supply, such as a

AC generator, associated.

The problem, however, is that overall standards with differences in frequency of energy transmission, coil arrangement, data channel, data protocol, modulation type and physical embodiment lead to differently constructed charging stations, which always only with

battery-powered devices of the same standard. This requires in each case a charging station, which is designed specifically for the respective battery-powered device.

Another problem is that the control of a charging station is to be synchronized with electrical devices which are arranged in the vicinity of the charging station and operate in the same frequency range as the control of the charging station in order to ensure trouble-free operation. Another problem is that adverse interference of the

electromagnetic stray fields of the charging station with the body's own

medical electronic devices, such as a pacemaker, etc. are not excludable. This allows the charging station to operate during operation

Health problems in persons with medical electronic devices.

DISCLOSURE OF THE INVENTION It is therefore an object of the present invention to provide a device and a

Method for wirelessly charging a battery powered device

to provide that solve the aforementioned problems. In particular, a device and a method for wireless charging of a battery-powered device are to be provided, in which both a reliable and fast wireless recharging of the battery is possible and possible no impairment of a person by the wireless charging occurs.

The object is achieved by a device for wireless charging of a battery-powered device according to claim 1. The apparatus comprises a receiving unit for receiving a first charging device and a second charging device, wherein the first charging device for wireless charging a battery-powered device according to a predetermined first standard is configured, the second charging device for wireless charging of a battery-powered device after a predetermined second

Standard, wherein the first standard is different from the second standard, and wherein the receiving unit is configured such that the first charging device for wireless charging a first battery-powered device at least partially simultaneously with the second charging device for wireless charging of a second battery-powered device is usable ,

With the device, it can be ensured that both a reliable and fast wireless recharging of the battery with different charging standards is possible and virtually no impairment of a person by the wireless charging occurs. The spread of stray fields during Charging the battery is significantly reduced. In addition, at least two different types of mobile devices that use different charging standards can be charged with the same device.

With the device also a physical integration of both principles in a charging station is possible. This avoids being in the

Charging station between the induction surfaces is a capacitive metal surface, as this has an inductive eddy current loss result. In addition, there is no coil located between the capacitive plates, which would reduce the efficiency of the capacitive principle.

The device can be advantageously integrated into a center console of a motor vehicle. As a result, a driver of the motor vehicle, the battery-powered device during charging in the charging station when needed in view or at least in range. As needed, the driver of the motor vehicle can thus control the charging or condition of the battery-powered device. This can not only via an operation and / or display on the battery-powered device but also by an operator and / or display on one of the device higher-level unit, for example on the

Dashboard of a vehicle, done. In addition, the battery-powered device can be charged while driving the car and is still ready for use. All these features are very comfortable for a driver of the motor vehicle.

Advantageous further embodiments of the device are specified in the dependent claims.

For example, the receiving unit may be a housing for receiving the second charging device above the first charging device, and / or the device may be shielded against radiation of electromagnetic radiation to the outside of the device, and / or the second

Charging device may be shielded against radiation of electromagnetic radiation in the direction of the first charging device. It is also possible that the receiving unit is configured to receive a detachably mountable cassette, on one side of which a first

Charging device and on one side opposite side, a second charging device is arranged, and / or other one side a first

Charging device and a second charging device is arranged.

According to one embodiment, the first charging device is disposed at the bottom of the housing and has both at least one coil for wirelessly charging a battery powered device at frequencies in the range of about 100 to 200 kHz and at least one coil for wirelessly charging a battery powered device at frequencies in the range from about 5 to 100 MHz. Additionally or alternatively, the second charging device may have metallic surfaces for wirelessly charging a battery powered device by means of capacitive charging. Here, the coil for wirelessly charging a battery powered device at frequencies in the range of about 5 to 100 MHz may be a frame coil or a flat coil.

It is also conceivable that the second charging device relative to the first

Charging device is movable such that the second charging device can cover or release the first charging device as needed in the direction of an opening of the device. In this case, the second charging device may be a blind, which is to be moved away from its closure level and rolled up for opening. It is also possible that the device a

Detecting means for detecting comprises whether the second

Charger is located in a position in which the second charging device for wireless charging of a battery-powered device is usable, and / or means for sending data relating to a wireless charging with the first and / or second charging device to an external

Display means.

The device described above may be part of a unit for a

Passenger compartment of a vehicle. Here, the unit may be configured such that the device is permanently installed in the vehicle. The above object is also achieved by a method for wireless charging of a battery-powered device according to claim 10. The method comprises the steps of arranging a first battery-powered device on a first charging device or a second charging device of a device, which has a receiving unit for receiving the first

Charging device and the second charging device, wherein the first charging device for wireless charging of a battery-powered device according to a predetermined first standard is configured, the second

Charging device for wireless charging of a battery-powered device according to a predetermined second standard is configured, and wherein the first standard is different from the second standard, and wireless charging of the first battery-powered device with the charging device of the first or second charging device to which the first battery-powered device wireless charging, wherein the wireless charging of the first battery powered device may be performed at least partially concurrent with wireless charging of a second battery powered device disposed on the other charging device of the first or second charging device.

The method offers the same advantages as previously described in relation to the

Subscriber station are called.

Further possible implementations of the invention also include not explicitly mentioned combinations of before or below with respect to the

Embodiments described features or embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

drawings

The invention is described in more detail below with reference to the accompanying drawings and to exemplary embodiments. Show it: Fig. 1 and Fig. 2 each show a side view of a device for wireless charging of battery-operated devices according to a first

Embodiment; Fig. 3 is a plan view of a charging device of the device of Fig. 1, on which a battery operated device is arranged;

4 is another side view of the apparatus for wirelessly charging battery-powered devices according to the first embodiment;

Fig. 5 is a plan view of a portion of a charging device of the apparatus of Fig. 4, wherein a battery operated device is disposed below the charging device; 6 is yet another side view of the wireless charging device of a battery powered device according to the first embodiment;

FIG. 7 is a plan view of a charging device of the device according to the first embodiment; FIG.

Fig. 8 and Fig. 9 are each a sectional view of the charging device of Fig. 7;

Fig. 10 is a schematic circuit diagram of the charging device of Fig. 7; 11 is a plan view of another charging device of the apparatus for wirelessly charging a battery-powered device according to the first embodiment

Embodiment;

12 is a flowchart of a method of wirelessly charging a battery-powered device according to the first embodiment;

13 is a flowchart of a subroutine of the method according to the first embodiment; 14 is a plan view of a charging device of a device for wirelessly charging a battery-powered device according to a second embodiment;

Fig. 15 are sectional views of the charging device of Fig. 14, respectively;

17 to 19 each show a plan view of a charging device of a device for wirelessly charging a battery-operated device according to a third to fifth embodiment;

FIG. 20 is a side view of an apparatus for wirelessly charging battery-powered devices according to a sixth embodiment; FIG.

FIGS. 21 and 22 each show a three-dimensional view of a loading unit according to the sixth embodiment; and

Fig. 23 is a three-dimensional view of a loading unit according to a seventh embodiment.

In the figures, identical or functionally identical elements are provided with the same reference numerals, unless stated otherwise.

Description of the embodiments

FIGS. 1 to 6 show various views of a device 1 for wirelessly charging a first battery powered device 2 and a second battery powered device 3. The device 1 may be mounted in a superordinate device 5, such as a vehicle, a building, etc., in FIG a unit 6 to be installed. In a motor vehicle, the unit 6 may be, for example, the instrument panel or a center console of the motor vehicle. However, the unit 6 can also be provided in the case of a motor vehicle, so that occupants in the vehicle's compartment can operate the device 1 from their seat. There are also other mounting locations conceivable. The first and / or second battery-operated device 2, 3 may be, for example, a small computer, a portable medical device, in particular a medical diagnostic device, a mobile phone, in particular a mobile phone, smartphone, etc. be.

In FIG. 1, the device 1 comprises a first charging device 11, a second charging device 12, a cover element 13, a shielding element 14, a

Recording unit 15, and two contact elements 16, each of which can actuate a switch 20 via switch contacts 21, which can be optically and / or acoustically displayed with a first and / or second display device 30, 40. In addition, a flexible film 22 and a connection contact 23 is provided. The switches 20 can be used as electronic switches, Hall switch sensors,

Forked light barrier, etc. be executed. The contact elements 16 are also designed as an actuating aid for an actuation of the cover element 13 and the second charging device 12. For example, the first display device 30 may be a light-emitting display, in particular by means of a light, for example LED. However, the first display device 30 may alternatively or additionally also a

To be a text display on the dashboard of a vehicle. For this purpose, the first display device 30 may be connected to a communication bus system of the superordinate device 5. Thus, the first display device 30 need not be arranged directly on the device 1. The second display device 40 may be implemented in the same way as the first one

Display device 30. The first display device 30 displays the state of the shutter of the cover member 13. The second display device 40 displays the state of closing the second charger 12. In the device 1 according to FIGS. 1 to 6, the first charging device 11 can charge the first battery-operated device 2 wirelessly according to a predetermined first standard. The second charging device 12 can wirelessly charge the second battery powered device 3 according to a predetermined second standard. Here, the first standard differs from the second standard. This will be described in more detail below.

As shown in FIG. 1, the receiving unit 15 receives the first and second charging devices 11, 12 such that the first charging device 11 is separated from the second charging device 12 by a predetermined distance Dl. The receiving unit 15 is designed as a shaft. The The guide unit 17 is designed as a guide groove and has a guide function for the second loading device 12. The loading device 12 is translationally movable along the guide 17 and thus the receiving unit 15, as in FIG. Fig. 4 and Fig. 6 shown by white block arrows. This will be the second

Loading device 12 on the left side in Fig. 1 to Fig. 6 to the

Receiving unit 15 bent and rolled up, as shown in Fig. 4 and Fig. 6

illustrated. Thereby, the second charging device 12, the first

Charging device 11 upward in Fig. 1 share, as shown in Fig. 5.

In Fig. 4, the structure of the second charging device 12 is shown in more detail. As a result, the second loader 12 has a cover strip member 121 having a plurality of fins. The cover strip element 121 is at one

Assembly tape 122 mounted, which is designed as a flexible band. Thus, the second charging device 12 is designed as a blind. In Fig.l it is shown that the second charging device 12 is formed by the fact that the

Composite of cover strip element 121 and mounting strip 122 according to Fig. 4 also a flexible film 22, e.g. made of polyimide, which in turn includes

Metal structures for coil assemblies or capacitor surfaces carries. The electrical connection of the metal structures of the film 22 is through the

Connection contact 23 made.

Over the second charging device 12, the cover 13 is arranged in Fig. 1, which covers the device 1 upwards. The cover member 13 is separated from the second by a predetermined distance D2

Charging device 12 is arranged. If the cover element 13 is also moved to the left in FIG. 1, an operator of the device 1 can move the first

battery-powered device 2 put on the first charger 11 or take down from the first charger 11. In this case, the two contact elements 16 are arranged separately from the switch contacts 21 and the

Device 1 is fully open. In Fig. 1, the device 1 is shown in a closed state. In contrast, in Fig. 2 is the case

illustrates, in which the device 1 is only partially opened because although the cover member 13 is opened, but the second charging device 12 is closed. The cover 13 may for example ferromagnetic material may be formed as a flexible ferromagnetic material. Alternatively, the cover 13 may be formed for example of rigid ferromagnetic material with the structural expression of a flexibility as overlapping cover strip elements.

Accordingly, in the present embodiment, the second charger 12 and the cover member 13 are each movable relative to the first charger 11 so that the second charger 12 and / or the cover member 13 covers the first charger 11 toward an opening of the device 1 as needed or releases. The opening is arranged in each case at the top of the device 1 in FIGS. 1, 2, 4 and 6. The second loading device 12 and / or the cover 13 is designed for the described movement as a blind with slats, which is to move away from its closure level and roll up to open. In FIGS. 1, 2, 4 and 6, the closure plane is arranged horizontally. The closure plane of the second charging device 12 is also arranged approximately parallel to the closure plane of the cover element 13. In addition, the closure level of the second charging device 12 is also arranged approximately parallel to the first charging device 11.

In Fig. 2, Fig. 4 and Fig. 6, the cover 13, the shielding member 14, the associated contact element 16, the associated switch 20 with

Switch contact 21, and the first display device 30 is not shown. This representation is used here for a better illustration. However, it is also conceivable that the device 1 in a modified embodiment, the cover 13, the shielding member 14, the associated contact element 16, the associated switch 20 with switch contact 21, and the first

Display device 30 is not included. In this case, or if that

Covering element 13 is pushed away from the position shown in Fig. 1, the battery-powered device 3 is visible in a plan view of the device 1, as illustrated in Fig. 3.

As shown in FIG. 1, the shielding element 14 shields the device 1 in such a way that no electromagnetic radiation can escape from the device 1 in the direction of the environment of the device 1 through it. The shielding element 14 is for this purpose made of a material shielding electromagnetic radiation, such as a metal, in particular a ferromagnetic steel sheet, etc. Preferably, this is also

Covering 13 configured from a shielding material or comprises a shielding material. The same applies to the side parts of the device 1 transversely to the plane of the figures. As a result, the cover element 13 and the shielding element 14 and the side parts of the device 1 together form a shielding cage. Consequently, it can be prevented that persons or the function of electrical devices, in particular pacemakers, etc., in the vicinity of the device 1 can be affected by electromagnetic radiation. In addition, the second charging device 12 against radiation of electromagnetic radiation in the direction of the first

Charging device 11 be shielded. As a result, the first and second charging devices 11, 12 do not impair their function.

With the device 1, the first and second battery-operated device 2, 3 can be charged at least partially simultaneously wirelessly. This is possible because the receiving unit 15 receives the first and second loaders 11, 12 one above the other, as shown in Fig. 1, for example. In this embodiment, the receiving unit 15 is configured as a housing which is inserted into the device 1.

Fig. 7 shows a view of the first charging device 11 for illustrating the charging principle of the first charging device 11. The first charging device 11 used for wireless charging of the first or second battery-powered

Device 2, 3 the principle of electromagnetic induction. In this case, data between the respective charging device 11, 12 and the corresponding battery-powered device 2, 3 can be transmitted bidirectionally, for example, by an amplitude modulation of the in the principle of

electromagnetic induction resulting electromagnetic field is used. In particular, the data may contain information for identification, for

Coupling, the load, the charging process, the end of charging, etc. include. As a communication path from respective charging device 11, 12 to the battery-powered device 2, 3 and vice versa, the method of

Load modulation is used. This is no additional Communication channel required as in a charging standard, which operates with frequencies in the hundred kHz range. For a charging standard operating at frequencies in the MHz range, the bi-directional one can be used

Data exchange over a GHz radio frequency channel as with Bluetooth.

In the example of FIG. 7, the first charging device 11 according to the present embodiment has first to fifth coils 111 to 115, a loading surface 116 in which the first to fifth coils 111 to 115 are integrated, and spacers 117. The first to fifth Coils 111 to 115 are each formed from a plurality of windings of a coil wire, in particular copper wire, optionally with a surface silver plating, or in a printed circuit, in particular on base material FR4 or on polyimide film. The coil wire can be connected to an electrical power supply. In Fig. 7 are for this purpose only the terminals 1141, 1142 of the fourth coil

114 and the terminals 1151, 1152 of the fifth coil 115, even if the first and third coils 111, 113 each likewise have comparable connections. FIG. 8 shows a section of the first charging device 11 along a section line. FIG

FIG. 9 shows a section of the first loading device 11 along a section line DD in FIG. 7. Accordingly, the first to third bobbins 111, 112, 113 are each arranged in a different plane from the fourth and fifth bobbins 114 , 115. The fourth and fifth coils 114, 115 are arranged in the loading area 116, which thus serves as a coil carrier. The loading area 116 is suitable for receiving the battery-operated device 2, 3 to be charged and supplying it with electrical energy. In addition, the second coil 112 is disposed above the first and third coils 111, 113. The first and third coils 111, 113 are arranged in a plane. The spacers 117 ensure the appropriate spacing between the coils 111 to 113 and the coils 114, 115 and a shielding unit comprising a shielding plate 118 and a mounting plate 119. The shielding plate 118 may be a ferrite plate, which is the

Intermodulation of the electromagnetic field with metallic environment downwards decreases and the field is concentrated upwards for coupling to the secondary coil of the battery powered device 2, 3. As can be seen from FIGS. 7 to 9, the first to third coils 111, 112, 113 are each designed as planar round coils. The first to third coil 111, 112, 113 are in this case designed as a multi-layer coil, whereby the induction can be increased compared to a single-layer design. In the first to third coils 111, 112, 113, the windings or different layers are in different planes, as shown in FIGS. 8 and 9. The first to third coils 111, 112, 113 each have a diameter of a few tens of millimeters and allow wireless energy transmission at a distance of a few millimeters up to a few centimeters. The first to third coils 111, 112, 113 each have an inductance in the range of micro-Henry. The first to third coils 111, 112, 113 can wirelessly charge the first or second battery powered device 2, 3 by electromagnetic induction. For wireless charging of the first or second battery powered device 2, 3, one of the first to third coils 111, 112, 113 may be operated at their resonant frequency in the hundreds of kHz range. In particular, the frequency may be in the range of approximately 100 to 200 kHz, which corresponds to a low-frequency range.

In contrast, in FIGS. 7 to 9, the fourth and fifth coils 114, 115 are each in the form of a planar loop coil whose coil windings are all in one plane. The fourth and fifth coils 114, 115 have a larger coil diameter than each of the first to third coils 111, 112, 113. The fourth and fifth coils 114, 115 span as large an area as possible within the loading surface 116 for large field propagation. In planar alignment, this gives greater freedom of the position of the secondary coil in the first or second battery-powered device 2, 3 relative to the fourth or fifth coil 114, 115, the primary coil. For wirelessly charging the first or second battery powered device 2, 3, the fourth and / or fifth coils 114, 115 may each be operated at their resonant frequency in the range of MHz. The frequency may be, for example, in the range of about 5 to 100 MHz, in particular 6.78 MHz or 13.56 MHz, which corresponds to a high-frequency range.

10 shows a block diagram of an electrical connection of the first to fifth coils 111 to 115 to at least one of the coils 111, 112, 113 with a coil 25 of the first battery powered device 2 for charging its battery 26 or one of the coils 114, 115 to be coupled to a coil 35 of the second battery powered device 3 for charging its battery 36.

As a result, the first charging device 11 is controlled by a control unit 50, which is connected to a bus system 60 of the superordinate device 5. The bus system 60 may be, for example, a CAN bus system, an Ethernet bus, etc. The control unit 50 serves to control a first switching device 51, a second switching device 52, a third

Switching device 53 and a carrier frequency generator 54. The

Carrier frequency generator 54 is connected to a coil current driver 55, which in turn is connected depending on the position of the third switching device 53 to a low-frequency impedance matching device 56 or a high-frequency impedance matching device 57. Depending on the position of the first to third switching device 51, 52, 53, which are executed in Fig. 10 as a switch, so in the coils 111 to 115, a current with the corresponding

Frequency generated, Thus, by means of electromagnetic induction

Charging power for the battery 26, 36 of one of the battery-powered devices 2, 3 are generated. The coil current driver 55 is in this example as

Broadband amplifier running. The control unit 50 controls the setting of the carrier frequency generator 54 to the desired frequency for the current in the

Coils 111 to 115 and the modulation of the frequency for data transmission.

Thus, the first charging device 11 can wirelessly charge the first battery powered device 2 according to either a predetermined first standard or a predetermined second standard. The first and second

Standard use the principle of electromagnetic induction.

In the present embodiment, the second charger 12 may wirelessly charge the second battery powered device 3 according to a predetermined third standard. According to the third standard, for example, the

Principle of capacitive charge find use. In this case, the second charger 12 is configured as shown in FIG. 11. Here, a plurality of surfaces 124 are regularly adjacent to each other on a loading surface 123. The surfaces 124 are designed in particular as metallic capacitance pads. The surfaces 124 act as a capacitor plate on a power-feeding side. The other capacitor plate for receiving energy in the battery powered device 2, 3 is preferably designed in the same manner as shown in FIG. 11 for the second charging device 12. The loading surface 123 is designed in particular very thin.

For example, the loading surface 123 is a metallized flexible film, in particular a polyimide film, structured as a surface 124

Copper lamination carries executed. To increase the energy transfer, the voltage at the surfaces 124 used for energy transfer must be increased.

According to a modification of the second charging device 12, at least one coil of the coils 111 to 115 is present next to the surfaces 124 on the loading surface 123. As a result, with the second charging device 12 both a charge according to the principle of electromagnetic induction and a charge according to capacitive charge with a battery-powered device 2, 3 possible. Thus, in this case, the first standard for wireless charging in the second charging device 12 would be charging according to the principle of FIG

electromagnetic coupling. In contrast, the second standard for wireless charging in the second charging device 12 is charging according to the principle of capacitive charging. The loading surface 123 can also be embodied here as a metallized flexible film, in particular a polyimide film, which carries a copper lining structured as surfaces 124 and coil (s) 111 to 115.

FIGS. 12 and 13 show parts of a method for wirelessly charging the battery-powered devices 2, 3. The method can be carried out, for example, when the device 1 is closed by means of cover element 13 and / or second charging device 12, which can be detected by the switches 20 and can be displayed with the display devices 30, 40. Thus, the switch 20 is detecting means for detecting whether the second charger 12 is in a position in which the second charger 12 is usable for wirelessly charging a battery powered device 2, 3. Optionally, an operator of the device 1 by means of the display devices 30, 40 in the clear text acoustically and / or optically prompted to close the switch 20. After starting the process at step S10 in FIG. 12, at step S20, for example, the battery-powered device 2 is placed on the loading surface 116 of the first charging device 11. However, it is also possible for the battery-operated device 2 to be arranged on the loading surface 123 of the second charging device 12. The same applies to the battery powered device 3. Thereafter, the flow proceeds to a step S30.

In a step S30, bidirectional communication is established between the battery-operated device 2 and the charging device 11, on which the battery-powered device 2 is arranged. Thereafter, the flow proceeds to a step S40.

In the step S40, it is checked whether the charging device 11 can wirelessly charge the battery powered device 2 according to the first standard, that is, charging according to the principle of low frequency electromagnetic induction. If this is possible, the flow proceeds to a step S50. If this is not possible, the flow proceeds to a step S60.

In the step S50, the controller 50 controls the switching device 53 such that the switching device 53 supplies the coil current driver 55 with the

Low frequency impedance matching device 56 connects. Thereafter, the flow proceeds to a step S80 at which a subroutine illustrated in FIG. 13 is started and determines which coil of the coils 111, 112, 113 is best coupled to a coil of the battery powered device 2 by one best possible energy transfer when loading the

battery-powered device 2 to allow.

On the other hand, in step S60, it is checked whether or not the charging device 11 can wirelessly charge the battery-powered device 2 according to the second standard, that is, charging according to the principle of high-frequency electromagnetic induction. If this is possible, the flow proceeds to a step S70. If this is not possible, the flow proceeds to a step S120. In step S70, the controller 50 controls the switching device 53 such that the switching device 53 supplies the coil current driver 55 with the

High frequency impedance matching device 55 connects. Thereafter, the flow proceeds to a step S90 at which a subroutine similar to the subroutine of Fig. 13 is started.

In the subroutine of Fig. 13, after the start at a step S901, the coupling k of the coil of the battery powered device 2 with each of the three low frequency coils 111, 112, 113 is measured and stored as the coupling values kl, k2, k3. K1 stands for the coupling of the coil 111 with the coil 25 of the battery-operated device 2. K2 stands for the coupling of the coil 112 with the coil 25 of the battery-operated device 2. K3 stands for the coupling of the coil 113 with the coil 25 of the battery-powered device 2 The coupling is determined, for example, by the geometry of the coils, such as their diameter, and the coil spacing. The largest coupling results when the primary coil in the charging device 11, so the respective coils 111, 112, 113, and the secondary coil in the battery-powered device. 2

are aligned coincidentally. Thereafter, the flow proceeds to a step S903.

At step S903, it is checked if the value is kl> k2. If the answer is YES, the flow proceeds to a step S904. Otherwise, the flow proceeds to a step S905

At step S904, it is checked if the value is kl> k3. If the answer is YES, the flow proceeds to a step S906. Otherwise, the flow proceeds to a step S907.

At step S905, it is checked if the value k2> k3. If the answer is YES, the flow proceeds to a step S908. Otherwise, the flow proceeds to a step S909.

In step S906, the coupling value kl is determined as the maximum coupling, so that the coil 111 is determined to be the coil having the best coupling with the coil 25 of the battery-powered device 2. Both In steps S907 and S909, the maximum coupling is determined as k3. In step S908, the maximum coupling is determined as k2. Thereafter, the flow advances to a step S910, respectively. At step S910, the control unit 50 controls the second switching means

52 to connect the low-frequency impedance matching device 57 to the coil of the coils 111, 112, 113, which has the best coupling with the coil 25 of the battery-operated device 2. Thereafter, the subroutine of Fig. 13 is ended and the flow goes to step S100 in Fig. 12.

In step S100, the charging of the battery-powered device 2 is started by turning on the field energy. Here, the control unit 50 controls the carrier frequency generator 54 and thus the coil current driver 55 accordingly. It is advantageous to operate the coils 111 to 113 for a high efficiency of energy transfer at its resonant frequency, as in the

Resonance frequency an energy increase arises. Stray field losses, eddy current losses in surrounding metallic bodies and the internal electrical resistances of the coils 25, 111, 112, 113 themselves influence the

Energy transfer efficiency in addition. Finally, the efficiency of the carrier frequency generator 54 goes directly into the efficiency of

Energy transfer. For increasing the energy transfer, the current in the coil 111, 112, 113 selected for energy transfer must be increased. Thereafter, the flow proceeds to a step S110. In step S110, the bi-directional communication checks if the

Battery of the battery powered device 2 is already fully charged or not. If the battery is not fully charged, the flow returns to step S100. Otherwise, the flow proceeds to step S140, at which the charging process and thus the procedure are ended.

In step S120, it is checked whether charging of the battery-powered device 2 according to the third standard, that is, the charging according to the principle of capacitive charging, can be carried out with the charging device 11. If this is possible, the flow proceeds to a step S130. If this is not possible, the flow proceeds to step S140, where the process is finished. At step S140, the charging of the battery powered device 2 by means of the third standard is started by turning on the field energy. In this case, the control unit 50 controls the second charging device 12 accordingly. It is also advantageous here if it is previously checked on which surfaces 124 the battery-operated device 2 is arranged on the second charging device 12, and then only the corresponding surfaces 124 are switched on, which are arranged opposite capacitor surfaces of the battery-operated device 2, 3. In addition, a bidirectional communication between the charging device 12 and the battery-operated device 2 is used to check whether or not the battery 26 of the battery-powered device 2 is already fully charged.

Thereafter, the flow proceeds to step S140, in which the

Charging process and thus the procedure will be terminated. In the method, steps S40, S60 and S120 may be in any other

Sequence or at least partially executed simultaneously.

Thus, with the device 1 according to the first embodiment, a charging of a first battery-powered device 2 and / or a second

battery-operated device 3 with the first and / or second charging device

11, 12 according to a first to third standard possible, ie the charging according to the principle of electromagnetic induction with low frequency or

High frequency and charging according to the principle of capacitive charge. FIGS. 14 to 16 show a first charging device IIA according to a second

Embodiment, instead of the first charging device 11 in a

Device 1 may be integrated, as described in the first embodiment. The first charging device IIA according to the present invention

Embodiment comprises two instead of the flat coils 114, 115

Frame coils 114A, 115A. The frame coil 114A has a frame 1145.

The frame coil 115A has a frame 1155. The frames 1145, 1155 are wound in FIGS. 15 and 16 as an example with three windings. The

Frame coils 114A, 115A are mounted within the deck 116 as shown in FIG. The frame coil 115A is larger than the frame coil 114A. Specifically, the frame coil 115A has longer side lengths than the frame coil 115A Frame coil 114A. The frame coils 114A, 115A are rectangular in FIGS. 14 to 16. As a result, the first charging device IIA according to the present embodiment may have a greater height than the charging device 11 according to the first embodiment.

Fig. 17 shows a first charging device IIB according to a third

Embodiment, instead of the first charging device 11 in a

Device 1 can be integrated, as described in the first embodiment. The first charging device IIB according to the present invention

Embodiment, instead of the coils 111 to 115, only the coil 115.

Thus, with the first charging device IIB according to the present embodiment, it can be charged wirelessly only in accordance with the principle of electromagnetic induction due to a high-frequency electric current. As a result, the switching device 53 can be omitted and the elements 54, 55 57 can be executed in one part.

Fig. 18 shows a first charging device HC according to a fourth

Embodiment, instead of the first charging device 11 in a

Device 1 can be integrated, as described in the first embodiment. The first charging device HC according to the present invention

Embodiment, instead of the coils 111 to 115, only the coils 111 to 113. Thus, with the first charging device HB according to the

present embodiment only according to the principle of

electromagnetic induction due to a low frequency electric current can be charged wirelessly. As a result, the switching device 53 can be omitted and the elements 54 to 56 can be embodied in one part.

Fig. 19 shows a first charging device HD according to a fifth

Embodiment, instead of the first charging device 11 in a

Device 1 can be integrated, as described in the first embodiment. The first charging device HD according to the present

Embodiment, like the first charging device HC according to the fourth embodiment, comprises only the coils 111 to 113 in place of the coils 111 to 115. However, the coils 111 to 113 are in the present embodiment

Embodiment no round coils but rectangular wound coils. The rectangular-wound Spulenlll to 113 offer by their larger

Area extent than the round coils a slightly larger area of uniform energy transfer on the loading surface 116th

Fig. 20 shows a device 7 according to a sixth embodiment. Here is the receiving unit 15 for receiving a detachably mountable

Cassette 70 designed. The cassette 70 has a connection device 71 for connecting the cassette 70 via a connection device 27 of the device 1 to a power supply of the device 7, a data line for the bus system 60 (FIG. 10), inputs and outputs for the switches 20 and the display devices 30 , 40. The cassette 70 comprises a complete mechanical and

electronic device for implementing two standards for wireless charging. The connection device 27 can be designed as a spring contact strip.

The cassette 70 is shown in more detail in FIGS. 21 and 22. The cassette 70 is rotatable about its own axis 72. In the cartridge 70, a second charger 12 is disposed on one side thereof as shown in FIG. On a side opposite to this side of the cassette 70 is a first one

Charging device IIB arranged, as shown in Fig. 22. The first and second loading means 12 are spaced apart from each other by a side web 73 of the cassette 70. The connection device 71 has in FIGS. 21 and 22 a multiplicity of connection possibilities which are used separately or at least partially together for connection to electrical devices, such as a display device 30, 40 (FIG. 1), a power supply, etc. can. The

Connecting device 71 is configured for example as a flat contact. In this case, the multiplicity of connection possibilities of the connection device 71 are arranged symmetrically twice around the axis 72. Consequently, on both sides of the axis 72, the same connection possibilities of

Connecting device 71 available. Thereby, by rotating the cartridge 70 about its axis 72, one or the other charging means 11, 12 can be selected for wireless charging.

In a method for charging one of the battery powered devices 2, 3, in addition to the steps of the method according to the first one

Embodiment, the compatibility of the charging device 11, 2, to which the battery operated device 2, 3 is arranged, and / or instructions for changing or the rotation of the cassette 70 about its axis 72 are displayed.

According to a modification of the sixth embodiment, the cartridge 70 has only one charging device, that is, either the first charging device 11 or the second charging device 12.

According to another modification of the sixth embodiment, the cassette 70 has on one side two charging devices according to different standards of wireless charging, either according to the principle of electromagnetic induction (high frequency and low frequency) and / or the capacitive charge. In this case, the connecting device 71 may also be arranged on two different sides, which are each arranged transversely to the two charging devices.

Fig. 20 shows a charging device HC of a cartridge 75 according to a seventh embodiment. The charging device HC may be used instead of the first charging device HB or the second charging device 12 of the cartridge 70 according to the sixth embodiment. Otherwise, the cassette 75 according to the present embodiment is constructed like the cassette 70 according to the sixth embodiment.

All of the previously described embodiments of the device 1, the

Charging devices 11, HA to HD, 12, 70, 75 and the method can be used individually or in all possible combinations.

In particular, any combination of the features of

Embodiments and / or their modifications possible. In addition, the following modifications are conceivable, in particular.

The device 1 according to the embodiments is installed in particular in a center console of a motor vehicle or in the cab of a

Trucks.

The cover 13 may, depending on the available space, be designed either as a rigid plate or as a blind with slats. In addition, the second Charging device 12 be executed either as a rigid plate or as a blind with slats. In the case of a rigid plate, this can be linear

extended level of the cover 13 and the second charger 12 may be performed to open or close the device 1, 7, as described above.

The coils 111 to 115 or the capacitive surfaces 124 may be electrically connected to the electronic driver circuit via a flexible metal foil, in particular a metal structure foil, for example the

Low-frequency impedance matching device 56 or the high-frequency impedance matching device 57th

The number and arrangement of the coils 111 to 115 of the device 1 of the embodiments is arbitrary. In particular, only one coil 111 may be present, even if several coils are preferred to the

Coupling factor between charging device 11 or 12 and the

battery-powered device 2, 3 increase. In addition, the geometry and size of the coils 111 to 115 can be selected as desired. Also, coils 111 to 115 having different shapes, for example, rectangular and round, etc., may be provided in a loading device 11.

The number and arrangement of the surfaces 124 of the device 1 of

Embodiments is arbitrary. In particular, only one surface 124 may be present, even if a plurality of surfaces 124 are preferable to the coupling factor between charging device 11 or 12 and the

battery-powered device 2, 3 increase.

Claims

claims

1) Device (1) for wireless charging of battery-operated devices (2, 3), with

a receiving unit (15) for receiving a first

Charging device (11, IIA to HD) and a second charging device

(12)

wherein the first charging device (11; HA to HD) is configured to wirelessly charge a battery powered device (2, 3) according to a predetermined first standard,

wherein the second charging device (12) is configured to wirelessly charge a battery powered device (2, 3) according to a predetermined second standard, the first standard being different from the second standard, and

wherein the receiving unit (15) is configured such that the first charging device (11; HA to HD) for wirelessly charging a first (2) battery powered device at least partially simultaneously with the second charging device (12) for wirelessly charging a second battery powered device (3 ) is usable. 2) Device (1) according to claim 1,

wherein the receiving unit (15) is a housing for receiving the second charging device (12) above the first charging device (11; HA to HD), and / or

wherein the device (1) is shielded against radiation of electromagnetic radiation to the outside of the device (1), and / or

wherein the second charging device (12) is shielded against radiation of electromagnetic radiation in the direction of the first charging device (11, HA to HD). Device (1) according to claim 1 or 2, wherein the receiving unit (15) for receiving a releasably mountable cassette (70; 75) is configured, on one side of a first charging device (11; IIA to HD) and on one side opposite Page a second

Charging device (12) is arranged, and / or on one side thereof a first charging device (11; HA to HD) and a second

Charging device (12) is arranged.

Device (1) according to one of the preceding claims,

the first charging device (11; HA to HD) being located at the bottom of the housing and both at least one coil (111, 112, 113) for wirelessly charging a battery powered device (2; 3) at frequencies in the range of about 100 to 200 kHz and at least one coil (114, 115) for wirelessly charging a battery powered device (2, 3) at frequencies in the range of about 5 to 100 MHz, and / or

wherein the second charging means (12) comprises metallic surfaces for wirelessly charging a battery powered device (2; 3) by means of capacitive charging.

Device (1) according to claim 4,

wherein the coil for wireless charging a battery powered device at frequencies in the range of about 5 to 100 MHz one

Frame coil or a flat coil is.

Apparatus (1) according to any one of the preceding claims, wherein the second loading means (12) is movable relative to the first loading means (11; HA to HD) such that the second loading means (12) the first loading means (11; HA to HD) each as needed in the direction of an opening of the device (1) cover or release.

Device (1) according to claim 6, wherein the second loading device (12) is a shutter which can be opened from its closure plane

to move away and to roll up. Device (1) according to claim 6 or 7, further comprising

a detection device for detecting whether the second

Charging device (12) is located in a position in which the second

Charging device (12) for wireless charging of a battery-powered

Device (2; 3) is usable, and / or

a device for transmitting data relating to a wireless charging with the first and / or second charging device (11;

HA to HD; 12) to an external display device (30; 40).

Unit (6) for a passenger compartment of a vehicle, with

a device (1) according to one of the preceding claims, wherein the unit (6) is designed such that the device

(1) is permanently installed in the vehicle.

Method for wireless charging of battery operated devices (2; 3), with the steps

Arranging a first battery-powered device (2; 3) on a first charging device (11; HA to HD) or a second one

Charging device (12) of a device (1) having a receiving unit (15) for receiving the first charging device (11; HA to HD) and the second charging device (12), wherein the first charging device (11; HA to HD) for wireless Charging a battery-powered device (2; 3) according to a predetermined first standard, wherein the second charging device (12) is configured to wirelessly charge a battery-operated device (2; 3) according to a predetermined second standard, and wherein the first standard is different from the second standard is, and

wirelessly charging the first battery-operated device (2; 3) with the charging device of the first or second charging device (11; HA to HD; 12) to which the first battery-powered device (2; 3) for wireless charging is arranged,

wherein the wireless charging of the first battery-operated device (2) can be carried out at least partially simultaneously with a wireless charging of a second battery-operated device (3), which is arranged on the other loading device of the first or second loading device (11; HA to HD; 12).