Method and an apparatus for transferring electrical power and data

• US 10,141,747 B2
• Filed: 07/25/2016
• Issued: 11/27/2018
• Est. Priority Date: 08/12/2015
• Status: Active Grant

• Current Assignee: Eggtronic Engineering SPA
• Original Assignee: Eggtronic Engineering S.R.L.
• Inventors: Spinella, Igor
• Primary Examiner(s): Fleming, Fritz M
• Assistant Examiner(s): Dhillon, Jagdeep
• Application Number:
  US15/751,082
• Publication Number:
  US 20180241218A1
• Time in Patent Office: 855 Days
• Field of Search: 307104, 307149, 307108, 307 66, 307 64, 307 82
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 50/05 using capacitive coupling
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

An apparatus for transferring electrical power and data includes a primary circuit comprising a source of electrical energy (10), at least a pair of transmitting armatures (100, 100′), a first of the armatures (100) being connected in use to a different electrical potential with respect to a second of the armatures (100′), at least an electric power transmitter (12) connected to the source of electrical energy (10) and to at least one of the armatures (100, 100′), and at least a transceiver (20) connected to at least one of the transmitting armatures (100, 100′). The transceiver (20) is particularly suitable for use in receiving and/or transmitting data via the transmitting armatures (100, 100′) independently of the power transmitted by the power transmitter (12).

Claims

1. An apparatus for transferring electrical power and data including a primary circuit and a secondary circuit,

wherein the primary circuit comprises:

an energy source (10),

at least a pair of transmitting armatures (100, 100′

), a first of the armatures (100) being connected in use to a different potential with respect to a second of the armatures (100′

),

at least a power transmitter (12) connected to the energy source (10) and at least one of the armatures (100, 100′

), and

at least a transceiver (20) connected to at least one of the transmitting armatures (100, 100′

), the transceiver (20) configured for receiving and/or transmitting data via the transmitting armatures (100, 100′

) independently of the power transmitted by the power transmitter (12),

at least a first capacitor (54) arranged between a head of the transceiver (20) and one of the transmitting armatures (100), at least a first inductance (50) arranged between the power transmitter (12) and one of the transmitting armatures (100), and at least a second inductance (50′

) arranged between the power transmitter (12) and the other of the transmitting armatures (100′

), the inductances being located upstream of the transceiver (20),

and wherein the secondary circuit comprises;

at least a pair of receiving armatures (200, 200′

) each arranged in proximity of a respective transmitting armature (100, 100′

) of the primary circuit,

a load (18) connected to the receiving armatures (200, 200′

), and

a transceiver (22) connected to the transmitting armatures (200, 200′

), the transceiver (22) being particularly suitable for use in receiving and/or transmitting data via the receiving armatures (200, 200′

) independently of the power transmission

at least a first capacitor (56) arranged between the transceiver (22) and one of the receiving armatures (200), and at least a second capacitor (56′

) arranged between the transceiver (22) and the other of the receiving armatures (200′

), at least a first inductance (52) arranged between the load (18) and one of the transmitting armatures (200), and at least a second inductance (52′

) arranged between the load (18) and the other of the receiving armatures (200′

), the inductances being located downstream of the transceiver (20).

2. The apparatus of claim 1, wherein the primary circuit further comprises a second capacitor (54′

) arranged between the other head of the transceiver (20) and the other of the transmitting armatures (100′

).

3. The apparatus of claim 1, wherein the power transmitter (12) further comprises:

at least an inductance (60) connected, in use to the energy source (10),

at least a capacitor (64) connected on one side to the inductance (60), and on the other side to a lower potential with respect to the energy source (10), and

at least a switch (66) connected on one side to the inductance (60), in parallel with the capacitor (64) and on the other side to a lower potential with respect to the energy source (10).

4. The apparatus of claim 1, wherein the power transmitter (12) comprises a pair of switches (66, 68).

5. The apparatus of claim 1, wherein each transceiver (20, 22) comprises

a data receiving circuit (84, 84′

) and a data transmitting circuit (86, 86′

),

the output of each data receiving circuit (86, 86′

) and the input of each data receiving circuit (84, 84′

) being connected to each first capacitor (54, 56),

each second capacitor (54′

, 56′

) being connected to a data reference voltage.

6. The apparatus of claim 1, wherein the secondary circuit further comprises:

a capacitor (70), connected at a side to a node between the first inductance (52) and the load (18), and on another side to a switch (71),

the switch (71) being connected to the node between the second inductance (52′

) and the load (18).

7. The apparatus of claim 1, wherein the secondary circuit further comprises a rectifying stage (105) connected to the load.

8. The apparatus of claim 1, wherein each pair of armatures made up by at least a transmitting armature (100) and at least a receiving armature (200) arranged in proximity of one another are constituent parts of a single monolithic capacitor.

9. The apparatus of claim 1, wherein the primary circuit is inserted internally of a multilayer surface.

10. The apparatus of claim 9, wherein the multilayer surface comprises at least a layer containing the one or more transmitting armatures (100), one or more layers (210) especially suitable in use for supplying the apparatus with the necessary supply voltage, reference voltage and data connection voltage, and one or more layers containing one or more of following components:

electrical power transmitter (12), inductances (50, 50′

), capacitors (54, 54′

) and transceivers (20).

11. A method for transferring power and data comprising steps of:

predisposing at least a primary circuit comprising an energy source (10), at least a pair of transmitting armatures (100, 100′

), at least a power transmitter (12) connected to the energy source (10) and to at least one of the armatures (100, 100′

), at least a transceiver (20) connected to at least one of the transmitting armatures (100, 100′

), at least a first capacitor (54) arranged between a head of the transceiver (20) and one of the transmitting armatures (100), at least a first inductance (50) arranged between the power transmitter (12) and one of the transmitting armatures (100), and at least a second inductance (50′

) arranged between the power transmitter (12) and the other of the transmitting armatures (100′

), the inductances being located upstream of the transceiver (20),

predisposing at least a secondary circuit comprising at least a pair of receiving armatures (200, 200′

), a load (18) connected to at least one of the receiving armatures (200, 200′

), a transceiver (22) connected to at least one of the transmitting armatures (200, 200′

), at least a first capacitor (56) arranged between the transceiver (22) and one of the receiving armatures (200), and at least a second capacitor (56′

) arranged between the transceiver (22) and the other of the receiving armatures (200′

), at least a first inductance (52) arranged between the load (18) and one of the transmitting armatures (200), and at least a second inductance (52′

) arranged between the load (18) and the other of the receiving armatures (200′

), the inductances being located downstream of the transceiver (20),

arranging at least a receiving armature (200) of the secondary circuit in proximity of a transmitting armature (100, 100′

) of the primary circuit for determining a capacitive-type coupling between the armatures (100, 200), and

transferring data from the transceiver (20) of the primary circuit to the transceiver (22) of the secondary circuit and/or vice versa, through the at least a pair of armatures (100, 200), and

transferring power from the transceiver (12) of the primary circuit to the load (18) of the secondary circuit, through the at least a pair of armatures (100, 200) independently of the data transfer.

12. The apparatus of claim 11, further comprising:

predisposing, in the primary circuit, a plurality of transmitting armatures (100), a plurality of power transmitters (12) and a plurality of transceivers (20), each transmitting armature (100) being connected to at least a respective and distinct power transmitter (12) via an inductance (50), and at least one of the armatures (100) being connected to at least a respective and distinct transceiver (20) via a capacitor (54),

exciting the transmitting armatures (100) arranged in proximity of the receiving armatures (200) via the respective power transmitters (12) and transceivers (20) of the primary circuit for enabling transfer respectively of power and data,

exciting the transmitting armatures (100) arranged in proximity of the receiving armatures (200′

) via the respective power transmitters (12) and transceivers (20) of the primary circuit for enabling transfer respectively of power and data.

13. The method of claim 11, wherein one or more of the transmitting armatures (100) are selectively excited with a voltage wave that is variable over time, and one or more different transmitting armatures (100) are selectively activated with a second voltage wave, different to the first.

14. The method of claim 13, further comprising:

predisposing, internally of each power transmitter (12) connected to a transmitting armature (100), a pair of switches (66, 68), and

selectively activating one or more different transmitting armatures (100) by means of a voltage wave generated by activating the switches (66, 68) with an intermittent signal.

15. The method of claim 11, further comprising:

predisposing, internally of each power transmitter (12) connected to a transmitting armature (100), an inductance (60) connected to an energy source (10), a capacitor (64) connected at a side thereof to the inductance (60) and on another side thereof to a reference potential, a switch (66) connected to the node of the capacitor (64) and the inductance (60),

activating the switch (66) of each power transmitter (12) connected to one or more transmitting armatures (100) arranged in proximity of a first receiving armature (200) with a first intermittent signal,

activating the switch (66) of each power transmitter (12) connected to one or more transmitting armatures (100) arranged in proximity of a second receiving armature (200′

) with a second intermittent signal in counter-phase with respect to the first intermittent signal.

16. The method of claim 15, wherein the second signal is a constant signal or a signal having a different phase with respect to the first intermittent signal.

17. The method of claim 11, further comprising:

predisposing, internally of each transceiver (20, 22), a data receiving circuit (84, 84′

) and a data transmitting circuit (86, 86′

),

selectively activating a data transmitting circuit (86) by modulating a wave between two voltage levels, superposing the data voltages on the power waves with no influence.

18. The method of claim 11, further comprising:

predisposing, internally of each transceiver (20, 22), a data receiving circuit (84, 84′

) and a data transmitting circuit (86, 86′

),

using different levels of supply voltage, primary and secondary in each transceiver (20) of the primary circuit and in each transceiver (22) of the secondary circuit, so that the receiving circuit (84) of the primary circuit distinguishes the voltage set by the transmitting circuit (86) of the primary circuit, by reading only the voltage imposed by the transmitting circuit (86′

) of the secondary circuit, and the receiving circuit (84′

) of the secondary circuit distinguishes the voltage imposed by the transmitting circuit (86′

) of the secondary circuit, by reading only the voltage imposed by the transmitting circuit (86) of the primary circuit.

19. The method of claim 11, further comprising:

predisposing, internally of each transceiver (20, 22), a data receiving circuit (84, 84′

) and a data transmitting circuit (86, 86′

),

using a single supply voltage level in each transceiver (20) of the primary circuit and in each transceiver (22) of the secondary circuit,

supplying a data transmitting circuit (86, 86′

) on one of the transceivers of the main circuit or the secondary circuit,

determining the impedance between the transmitter (86) of the primary circuit and the receiver (84) of the primary circuit,

determining the impedance between the transmitter (86) of the primary circuit and the receiver (84′

) of the secondary circuit,

determining the impedance between the transmitter (86′

) of the secondary circuit and the receiver (84) of the primary circuit,

determining the impedance between the transmitter (86) of the primary circuit and the receiver (84′

) of the secondary circuit,

determining which data transmitting circuit (86, 86′

) is transmitting data on the basis of the difference between the impedance determined between the transmitter (86, 86′

) and receivers (84, 84′

) and the voltage level on the receiving circuit (84′

) of the secondary circuit.