Linear transport system, method for operating a linear transport system, and contactlessly transmitting power and data system

Patent metadata

Field	Value
Publication number	US-12040634-B2
Application number	US-202017085532-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	May 16, 2018
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A linear transport system includes a movable carriage, a guide rail for guiding the carriage, and a linear motor for driving the carriage along the guide rail. A system is provided for contactless power and data transmission; e.g., where power and data are each sent inductively via separate coils to the carriage of the linear transport system and/or received by the carriage of a linear transport system. A method of operating such a linear transport system and a contactless power and data transmission system are also included.

First claim

The invention claimed is:

1. A linear transport system comprising:
a movable carriage,
a guide rail for guiding the carriage, and
a linear motor for driving the carriage along the guide rail, the linear motor comprising a stator and a rotor, the stator comprising at least one motor module arranged along the guide rail in a stationary manner, each motor module comprising one or a plurality of drive coils, the rotor being arranged at the carriage and comprising one or a plurality of magnets; and
a system for contactless power and data transmission, the system for contactless power and data transmission comprising:
one or a plurality of stationary coil modules arranged along the at least one motor module in a stationary manner, and
one or a plurality of carriage-coil modules arranged at the carriage,
wherein said one or said plurality of stationary coil modules each comprises one or a plurality of power-transmitting coils and one or a plurality of first data coils, and
wherein said one or said plurality of carriage-coil modules comprises one or a plurality of power-receiving coils which may be inductively coupled to said one or said plurality of power-transmitting coils and one or a plurality of second data coils which may be inductively coupled to said one or said plurality of first data coils; and
a control device configured to control a power supply for said one or said plurality of stationary coil modules to apply an electrical voltage to at least one of said one or said plurality of power-transmitting coils and/or to at least one of said one or said plurality of first data coils, respectively,
so that power may be contactlessly transmitted to the carriage via an inductive coupling of a power-transmitting coil, to which an electrical voltage has been applied, to a power-receiving coil and/or data may be contactlessly transmitted to the carriage and/or received from the carriage via an inductive coupling of a first data coil, to which an electrical voltage has been applied, with a second data coil;
wherein the first data coil and the second data coil form a first, a second and a third communication channel in order to transmit data to the carriage via the first communication channel, in order to receive data from the carriage via the second communication channel and in order to transmit a clock signal based on a reference time to the carriage via the third communication channel.

2. The linear transport system according to claim 1 , wherein the system for contactless power and data transmission comprises a communication interface configured to receive the reference time via a communication network, wherein the control device is adapted to control the power supply based on the reference time in order to contactlessly transmit the clock signal based on the reference time as data to the carriage.

3. The linear transport system according to claim 1 , wherein the carriage has a carriage-power supply coupled to said one or said plurality of power-receiving coils for supplying the transmitted power to the carriage-power supply, wherein the carriage comprises a carriage-control device coupled to the carriage-power supply for supplying electrical power from the carriage-power supply.

4. The linear transport system of claim 3 , wherein the carriage-power supply is coupled to at least one of one or a plurality of second data coils, wherein the carriage-control device is adapted to control the carriage-power supply to supply electrical voltage to at least one of the at least one second data coils coupled to the carriage-power supply, so that data may be contactlessly transmitted from the carriage via an inductive coupling of a second data coil, to which an electrical voltage has been applied, with a first data coil.

5. The linear transport system according to claim 3 , wherein the carriage comprises an electrical device coupled to the carriage-power supply in order to be adapted to provide electrical power to the electrical device, wherein the carriage-control device is coupled to said one or said plurality of second data coils to receive the transmitted data, and wherein the carriage-control device is configured to control the electrical device based on the received data.

6. The linear transport system according to claim 1 , wherein at least one of said one or a plurality of stationary coil modules extends along said at least one motor module, wherein said at least one stationary coil module comprises exactly one power-transmitting coil extending along said at least one motor module from a first end to a second end of said at least one coil module opposite said first end.

7. The linear transport system according to claim 1 , wherein at least one of said one or said plurality of stationary coil modules extends along the at least one motor module, wherein the at least one stationary coil module comprises a plurality of power-transmitting coils arranged along the at least one motor module at an offset with regard to each other.

8. The linear transport system according to claim 7 , wherein the plurality of power-transmitting coils are arranged partially overlapping and at an offset with regard to each other.

9. The linear transport system according to claim 1 , wherein a plurality of stationary coil modules extending along the at least one motor module are provided, at least two of which are arranged immediately adjacent to one another, wherein the two immediately adjacent stationary coil inductors each comprise a part of a power-transmitting coil in such a way that the two parts form a power-transmitting coil.

10. The linear transport system according to claim 1 , wherein at least one of said one or said plurality of stationary coil modules is arranged on an outer side of the at least one motor module.

11. The linear transport system according to claim 1 , wherein at least one of said one or said plurality of stationary coil modules is arranged within an assembly space of the at least one motor module.

12. The linear transport system according to claim 1 , wherein at least one of said one or said plurality of stationary coil modules has a circuit board comprising said one or said plurality of power-transmitting coils and said one or said plurality of first data coils, said circuit board forming an outer side of said at least one motor module.

13. A method of operating a linear transport system according to claim 1 , the method comprising the following steps:
controlling the power supply by the control device so that at least one of said one or said plurality of power-transmitting coils and/or at least one of said one or said plurality of first data coils are each supplied with an electrical voltage,
so that power is transmitted without contact to the carriage via an inductive coupling from a power-transmitting coil, to which an electrical voltage has been applied, to a power-receiving coil, and/or via an inductive coupling of a first data coil, to which an electrical voltage has been applied, with a second data coil, data is contactlessly transmitted to the carriage and/or received from the carriage.

14. A contactless power and data transmission system comprising:
one or a plurality of stationary coil modules arranged along at least a motor module in a stationary manner, and
one or a plurality of carriage-coil modules arranged at a carriage,
wherein said one or said plurality of stationary coil modules each comprises one or a plurality of power-transmitting coils and one or a plurality of first data coils, and
wherein said one or said plurality of carriage-coil modules comprises one or a plurality of power-receiving coils which may be inductively c

Assignees

• Beckhoff Automation Gmbh

Inventors

• Prüssmeier Uwe
• Vorbohle Thomas
• Otterpohl Dirk

Classifications

• B65G54/02

  electrostatic, electric, or magnetic · CPC title

• B65G35/06

  comprising a load-carrier moving along a path, e.g. a closed path, and adapted to be engaged by any one of a series of traction elements spaced along the path (effecting drive at two or more points spaced along the length of an endless conveyor B65G23/32) · CPC title

• B60L53/305

  Communication interfaces · CPC title

• B60L13/03

  Electric propulsion by linear motors · CPC title

• B60L5/005

  without mechanical contact between the collector and the power supply line · CPC title