Linear transmission systems and contactless power and data transmission systems

Abstract

The present invention relates to a linear conveying system (101) and a contactless power and data transmission system (119). According to the invention, power and data are inductively transmitted to and / or received by the carriage (103) of the linear conveying system (101) via separate coils.

Description

Technical Field

[0001] The invention relates to a linear conveyor system, a contactless power and data transmission system for a linear conveyor system, and a method and a computer program for operating a linear conveyor system.

[0002] This patent application claims the priority of German patent application (No. DE 10 2018 111 715.9), the disclosure content of which is incorporated herein by reference. Background Art

[0003] The modified patent DE 10 216 422 C5 describes a device for inductive power supply and for guiding freely movable objects. The power transmission takes place via only one conductor loop.

[0004] Patent DE 10 2004 031 580 B4 describes a device for contactless inductive power transmission in a mobile device. Power and data are transmitted via a common coil.

[0005] European patent EP 1 984 203 B1 describes a transport system comprising a track system and a carriage arranged on the track system. Each carriage comprises a secondary coil and is inductively coupled to the track system for transmitting power and / or information about the track system. In addition, a leaky waveguide and an antenna are used for redundant data transmission. Summary of the invention

[0006] The object of the present invention is to provide a concept for the efficient transmission of power and data to a carriage of a linear transport system in a contactless manner.

[0007] This object is achieved by the respective subject matter of the independent claims. Preferred embodiments of the invention are shown in the respective dependent claims.

[0008] According to a first aspect of an embodiment of the present invention, there is provided a linear conveying system, comprising:

[0009] Movable slide;

[0010] a guide rail for guiding the carriage;

[0011] A linear motor for driving the carriage along the guide rail, wherein the linear motor comprises: a stator and a rotor, wherein the stator has at least one motor module fixedly arranged along the guide rail, each motor module comprising one or more drive coils, and the rotor is arranged on the carriage, and comprises one or more magnets, and a contactless power and data transmission system, wherein the contactless power and data transmission system comprises:

[0012] one or more fixed coil modules fixedly arranged along the at least one motor module;

[0013] one or more carriage coil modules arranged on the carriage;

[0014] The one or more fixed coil modules each include one or more power transmission coils and one or more first data coils, wherein the one or more slide coil modules include one or more power receiving coils that can be electrically inductively coupled with the one or more power transmission coils, one or more second data coils that can be inductively coupled with the one or more first data coils, and a control device for respectively controlling the power supply of the one or more fixed coil modules to apply voltage to at least one of the one or more power transmission coils and / or to at least one of the one or more first data coils, so that power is non-contactly transmitted to the slide through the inductive coupling between the power transmission coil to which voltage is applied and the power receiving coil, and / or data is non-contactly transmitted to the slide or data of the slide is received through the inductive coupling between the first data coil to which voltage is applied and the second data coil.

[0015] According to a second aspect of an embodiment of the present invention, there is provided a method for operating a linear conveying system, the operating method comprising the following steps:

[0016] The power supply is controlled by the control device so that at least one of the one or more power transmission coils and / or at least one of the one or more first data coils obtains a voltage, thereby transmitting power to the slide in a contactless manner through the inductive coupling between the power transmission coil to which the voltage is applied and the power receiving coil, and / or transmitting data to the slide in a contactless manner through the inductive coupling between the first data coil to which the voltage is applied and the second data coil and / or receiving data from the slide.

[0017] According to a third aspect of the present invention, a contactless power and data transmission system for a linear conveying system is provided, the linear conveying system comprising: a movable carriage, a guide rail for guiding the carriage, a linear motor for driving the carriage along the guide rail, wherein the linear motor comprises: a stator and a rotor, the stator having at least one motor module fixedly arranged along the guide rail, each motor module comprising one or more drive coils, the rotor being arranged on the carriage and comprising one or more magnets; the contactless power and data transmission system comprises:

[0018] one or more fixed coil modules fixedly arranged along the at least one motor module;

[0019] one or more carriage coil modules that may be arranged on the carriage;

[0020] The one or more fixed coil modules each include one or more power transmission coils and one or more first data coils, wherein the one or more slide coil modules include one or more power receiving coils that can be inductively coupled with the one or more power transmission coils, one or more second data coils that can be inductively coupled with the one or more first data coils, and a control device for respectively controlling the power supply of the one or more fixed coil modules to apply voltage to at least one of the one or more power transmission coils and / or to at least one of the one or more first data coils, so that power is transmitted to the slide in a contactless manner through the inductive coupling between the power transmission coil to which voltage is applied and the power receiving coil, and / or data is transmitted to the slide in a contactless manner or data of the slide is received through the inductive coupling between the first data coil to which voltage is applied and the second data coil.

[0021] According to a fourth aspect of the present invention, there is provided a computer program comprising a program code, which, when executed on a computer, for example, when executed on the control device of the contactless power and data transmission system for a linear conveying system, is used to implement a method of operating the linear conveying system.

[0022] The invention is based on achieving the above-mentioned tasks by means of a single coil arrangement, wherein the coil arrangement is used for contactlessly transmitting power and data to a carriage of a linear conveying system. On the one hand, a power transmission coil and a power receiving coil are provided, so that power can be transmitted to the carriage and / or received from the carriage by appropriate inductive coupling between these coils.

[0023] In another aspect, a first data coil and a second data coil are provided so that data can be contactlessly transmitted to the carriage by inductive coupling.

[0024] Advantageously, therefore, power and data may be transmitted to the carriage via separate channels.

[0025] Another advantage of contactless power and data transmission is that power and data can be transmitted without wear.

[0026] When the carriage is fixed or the guide rail guides the carriage to move, it is advantageously possible to transmit data and power to the carriage in a contactless manner.

[0027] This provides the technical advantage that actions can be performed with a passive carriage. For example, possible applications include electric weighing devices and / or electric grippers, each of which is arranged on the carriage.

[0028] Finally, a specific technical advantage of the present invention is that it provides a concept for efficient contactless power and data transmission to the carriage of a linear conveying system.

[0029] The phrase "at least one" specifically includes the phrase "one or more".

[0030] The contactless power and data transmission system provided according to an embodiment of the present invention includes a communication interface for receiving a reference time via a communication network, and the control device is used to control the power supply based on the reference time so as to transmit a clock signal based on the reference time as data contactlessly to the slide.

[0031] For example, this embodiment has the following technical advantages: Time-synchronized actions can be performed by the carriage. For example, it is advantageously possible to grab objects from a fast product flow with precise timing.

[0032] Furthermore, a specific technical advantage is that the movements of the carriages can be planned and executed synchronously and precisely.

[0033] In one embodiment, the communication interface comprises an Industrial Ethernet communication interface.

[0034] According to an embodiment, the communication network comprises an Industrial Ethernet communication interface.

[0035] According to another embodiment of the present invention, the carriage comprises a carriage power supply coupled to the one or more power receiving coils so as to be able to provide the transmission power to the carriage power supply, wherein the carriage has a carriage control device coupled to the carriage power supply so as to be powered by the carriage power supply.

[0036] For example, this embodiment has the following technical advantages: it is possible to effectively provide electric energy to the carriage control device, and therefore, it is possible to omit other power storage devices for the carriage control device.

[0037] According to another embodiment of the present invention, a slide power supply is coupled to at least one of the at least one or more second data coils, wherein the slide control device is used to control the slide power supply to apply voltage to at least one of the at least one second data coil coupled to the slide power supply, so that data can be transmitted contactlessly by the slide through inductive coupling between the second data coil to which voltage has been applied and the first data coil.

[0038] For example, this embodiment has the following technical advantages: data can be effectively transmitted from the carriage to the fixed coil in a non-contact manner, which is advantageous in that it is possible to form a return channel from the carriage to the fixed coil module.

[0039] This means in particular that, according to this embodiment, data can be transmitted contactlessly not only to the carriage but also back from the carriage.

[0040] Thus, for example, measured values ​​of a sensor arranged on the carriage can be transmitted contactlessly from the carriage to the stationary coil module.

[0041] Therefore, the embodiments of the present invention have the advantage of bidirectional communication.

[0042] According to another embodiment, the carriage comprises an electric device coupled to the carriage power supply so as to be able to provide power to the electric device, wherein the carriage control device is coupled to the one or more second data coils to receive the transmitted data, and the carriage control device is used to control the electric device based on the received data.

[0043] For example, this has the following technical advantages: power can be efficiently supplied to the electric device. Therefore, a separate energy storage device for the electric device may not be used.

[0044] In addition, it has the following technical advantage: the electric device can be effectively operated or controlled respectively.

[0045] Another technical advantage is that, for example, the electric device can be remotely controlled by contactless data transmission.

[0046] This embodiment also has the following technical advantages: it is also possible to remotely control the movable slide.

[0047] In one embodiment, a plurality of electric devices are provided. The plurality of electric devices may be the same or different. The embodiments related to one electric device are similarly applicable to the plurality of electric devices, and vice versa.

[0048] For example, the electric device is one of the following electric devices: a gripper, an actuator, a sensor, and a weighing device.

[0049] Furthermore, it is advantageous that the electric device is controlled in such a way that it performs one or more predetermined actions at a given or predetermined time when a corresponding clock signal is transmitted based on the reference time, such as grabbing one or more objects from a fast product flow of objects at a predetermined time.

[0050] According to another embodiment of the present invention, at least one of the one or more fixed coil modules extends along the at least one motor module, and the at least one fixed coil module has a power transmission coil extending from a first section of the at least one fixed coil module to a second section opposite thereto along the first end of the at least one motor module.

[0051] For example, this embodiment has the following technical advantages: the fixed coil module can be simply designed. In addition, the technical advantage of the present invention is that if the carriage extends to the respective coil modules, power can be transmitted to the carriage contactlessly from the first end to the second end.

[0052] According to another embodiment of the present invention, at least one of the one or more fixed coil modules extends along the at least one motor module, and the at least one fixed coil module has a plurality of power transmission coils offset relative to each other along the at least one motor module.

[0053] For example, this embodiment has the following technical advantages: power transmission can be performed effectively. In particular, a technical advantage can be formed, that is, when the slide moves along the fixed coil module, the power ripple that may be generated can be effectively reduced. In particular, this makes the power transmission relatively uniform without obvious power fluctuations.

[0054] According to another embodiment of the present invention, a plurality of power transmission coils are partially overlapped and arranged offset relative to each other.

[0055] For example, the technical advantage of this embodiment is that it is possible to achieve efficient and smooth power transmission without large power fluctuations.

[0056] According to another embodiment of the present invention, a plurality of fixed coil modules are provided extending along the at least one motor module, and at least two of the fixed coil modules are arranged adjacent to each other, wherein the two adjacently arranged fixed coils each include a portion of a power transmission coil, and the two portions formed in this way form the power transmission coil.

[0057] For example, this creates a technical advantage in that, when power is transmitted to a carriage moving on the two adjacent stationary coil modules, power fluctuations at a transition between the two adjacent stationary coil modules can be effectively reduced.

[0058] These parts of the power transmission coil may also be referred to as power transmission coil parts.

[0059] According to another embodiment of the present invention, at least one of the one or more stationary coil modules is arranged on an outer side of the at least one motor module.

[0060] For example, this embodiment has the technical advantage that the system can be easily retrofitted to transmit contactless data and power to an already installed linear conveyor system.

[0061] According to another embodiment of the present invention, at least one of the one or more fixed coil modules is arranged in an assembly space of the at least one motor module.

[0062] For example, this embodiment has the following technical advantage, namely, it can effectively utilize the existing assembly space in the at least one motor module.

[0063] According to another embodiment of the present invention, at least one of the one or more fixed coil modules has a printed circuit board including the one or more power transmission coils and the one or more first data coils, and the printed circuit board forms an outer side of the at least one motor module.

[0064] For example, this embodiment has the following technical advantage, namely, the corresponding fixed coil module can be arranged on the motor module in an efficient and space-saving manner.

[0065] The technical functionality of the method according to the second aspect of embodiments of the present invention is derived analogously from the corresponding technical functionality of the linear conveying system according to the first aspect and / or the contactless power and data transmission system for a linear conveying system according to the third aspect.

[0066] This means, in particular, that method features are derived from corresponding system features and vice versa.

[0067] According to an embodiment, the linear conveying system in the expression "contactless power and data transmission system for a linear conveying system" is the linear conveying system according to the first aspect.

[0068] The coil in this specification includes two or more turns or windings. Therefore, the coil in this specification is different from a loop.

[0069] For example, according to the coils provided by the embodiments of the present invention, the coils of the fixed coil module and / or the coils of the carriage coil module are arranged in layers or in multiple stages.

[0070] For example, one or more coils provided in an embodiment of the present invention, the coil of the fixed coil module and / or the coil of the carriage coil module are surrounded by a circuit board. For example, one or more coils are printed on a printed circuit board. For example, one coil is arranged on the inner side of the circuit board. For example, one or more coils are arranged in layers or multiple levels in the printed circuit board.

[0071] In an embodiment, the linear transport system and / or the contactless power and data transmission system comprises a power source.

[0072] In one embodiment, a plurality of carriages are provided. Embodiments of one carriage are similarly applicable to a plurality of carriages and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The present invention is described in more detail below through preferred embodiments. The accompanying drawings of the present invention are as follows:

[0074] Figure 1 A linear conveyor system is shown in side view and is used for contactless transmission of power and data.

[0075] Figure 2 Shown is a side view Figure 1 A linear conveyor system is shown with an enlarged detail view of the system for contactless transmission of power and data.

[0076] Figure 3 Shows the front view Figure 2 Linear conveyor system shown and system for contactless transmission of power and data.

[0077] Figure 4 Shown along Figure 1 The cross section line AA is shown Figure 1 A cross-sectional view of a linear conveyor system and a system for contactless transmission of power is shown.

[0078] Figure 5 Shows the front view Figure 3 Another embodiment of the system is shown.

[0079] Figure 6 Shown is a side view Figure 2 A stationary coil module is shown with adjacent stationary coil modules.

[0080] Figure 7 Another embodiment is shown in a side view with two stationary coil modules arranged next to each other.

[0081] Figure 8 A cross-sectional view of two coil modules in one embodiment is shown from the side.

[0082] Fig. 9 A cross-sectional view of two coil modules in another embodiment is shown from the side.

[0083] Fig.10 A stationary coil module is shown in another embodiment from a side view.

[0084] Fig.11 A stationary coil module is shown in another embodiment from a side view.

[0085] Fig.12 A plurality of power receiving coils and two power receiving coils arranged side by side are shown in a side view.

[0086] Fig.13 Shown is a side view Fig.12 Three different positions of the two receiving coils are shown as the carriage moves along the transmitting coil.

[0087] Fig.14Two stationary coil modules 121 are shown in another embodiment in a side view.

[0088] Fig.15 A flow chart of a method for operating a linear conveyor system is shown.

[0089] In the following, the same features may be marked with the same reference numerals. For the sake of clarity, not all components may be shown in each figure. In addition, for the sake of clarity, not every component in each figure may have its own reference numeral. DETAILED DESCRIPTION

[0090] Figure 1 A linear conveyor system 101 is shown.

[0091] The linear transport system 101 includes a carriage 103 guided by a guide rail 105 .

[0092] The carriage 103 comprises rollers which are not shown here.

[0093] The rollers of the carriage roll on the running surface of the guide rail 105 .

[0094] The linear transport system 101 further includes a linear motor 107 . The linear motor 107 includes a stator 109 .

[0095] The stator 109 includes a plurality of motor modules 111 , each of which has a plurality of driving coils.

[0096] Furthermore, the linear motor 107 includes a rotor disposed at the carriage 103. The rotor includes a plurality of magnets.

[0097] Furthermore, the linear transport system 101 comprises a contactless power and data transmission system 119. The system 119 comprises a plurality of stationary coil modules 121 arranged along the motor module 111.

[0098] The system 119 further includes a carriage coil module 123 disposed on the carriage 103 .

[0099] Each of the fixed coil modules 121 includes a power transmission coil.

[0100] In addition, the fixed coil module 121 includes a plurality of first data coils 127 , 131 , 135 .

[0101] The carriage coil module 123 includes a power receiving coil.

[0102] In addition, the carriage coil module 123 includes a plurality of second data coils.

[0103] The linear conveying system 101 further includes a power supply.

[0104] The system 119 also includes control means for contactless data and power transmission.

[0105] The power receiving coil and the second data coil are arranged on the carriage coil module 123 in such a manner that the power receiving coil is opposite to the power transmitting coil, and the second data coil is opposite to the first data coil.

[0106] Thus, due to this opposing arrangement, the individual coils can effectively be coupled to each other inductively.

[0107] This means that the power transmission coil can be inductively coupled to the power receiving coil.

[0108] Furthermore, the first data coil can be effectively coupled inductively to the corresponding second data coil. Thus, the respective inductive coupling can form a communication channel for transmitting data in an advantageous manner. For example, these data include control commands and / or clock signals and / or data of sensors arranged on the carriage.

[0109] The control device is used to control the voltage supply so as to apply voltage to at least one of the power coils and / or to at least one of the first data coils, thereby transmitting power to the slide 103 in a contactless manner through the inductive coupling between the power transmission coil to which the voltage is applied and the power receiving coil, and / or transmitting data to the slide 103 in a contactless manner and / or receiving data from the slide 103 through the inductive coupling between the first data coil to which the voltage is applied and the corresponding second data coil.

[0110] Therefore, the arrangement of the fixed coil module 121 and the slide coil module 123 according to the present invention has the beneficial effect that power and / or data can be transmitted contactlessly to the slide 103, respectively, or data can be received from the slide 103 when the slide 103 moves along the motor module 111 and when the slide 103 is fixed.

[0111] also, Figure 1 Cut line AA is shown, where Figure 4 A cross-sectional view corresponding to the cutting line AA is shown.

[0112] Figure 2 Shows Figure 1 An enlarged detail view of the carriage 103 on the guide rail 105 is shown.

[0113] Figure 2 It also shows the combination Figure 1 The power transmission coil 125 of the fixed coil module 121 is described.

[0114] Figure 2 It also shows the combination Figure 1 First data coils 127 , 129 , 131 , 133 , 135 are described.

[0115] Figure 2 The power receiving coil 137 of the carriage coil module 123 described above is shown.

[0116] Figure 2 It also shows the above combination Figure 1 A plurality of second data coils 139 , 141 , 143 are described.

[0117] Figure 2 Also shown are the power supply 145 and control device 151 described above.

[0118] For example, the first data coils 127 and 131 can be inductively coupled with the second data coil 139 so that a first communication channel can be formed.

[0119] For example, the first data coils 129 and 133 may be inductively coupled with the second data coil 141 , thereby forming a second communication channel.

[0120] For example, the first data coil 135 may be inductively coupled with the second data coil 143 , thereby forming a third communication channel.

[0121] For example, the reference time may be transmitted to the carriage 103 via the third communication channel.

[0122] For example, the data described above may be sent to and / or received from the carriage 103 via the first and / or second communication channels.

[0123] Therefore, full-duplex communication can be performed through the first and second communication channels.

[0124] The carriage 103 includes an electric device 157. For example, the electric device 157 is a clamp.

[0125] Since power can be transmitted to the carriage 103 contactlessly, the electric device 157 can be operated.

[0126] Two electrical connection points 159 are provided on the carriage coil module 123 which is electrically connected to the clamp 157 .

[0127] In addition, the carriage coil module 123 includes two selectable state light emitting diodes 161 , which can indicate the state of the carriage coil module 123 , for example.

[0128] The carriage coil module 123 includes a first installation space for electronic equipment.

[0129] A carriage control device and a carriage power supply are arranged in the first installation space of the electronic equipment.

[0130] The carriage power supply is coupled to the power receiving coil 137 so as to provide the transmitted electric energy to the carriage power supply.

[0131] The carriage control device is coupled to the carriage power supply to provide electrical energy through the carriage power supply.

[0132] Figure 2 The fixed coil module 121 shown comprises two opposite first electrical connections 153, through which it can be electrically connected to another coil module. For example, an applied voltage can be recycled through these electrical connections.

[0133] Figure 3 Shows Figure 2 A front view of the linear conveyor system 121 is shown.

[0134] The motor module 111 shows a second electrical connector 155 corresponding to the front view, which connects the motor module 111 to an adjacent motor module in an electrically conductive manner to circulate a driving voltage through the driving coil.

[0135] Figure 3 The rollers 104 of the carriage 103 and the running surface 106 of the guide rail 103 on which the rollers 104 roll are shown.

[0136] also, Figure 3 The magnets 117 of the rotor 115 are shown symbolically in an abstract manner.

[0137] Figure 3 The drive coil 113 is furthermore shown symbolically in an abstract manner.

[0138] Figure 4 Shown along Figure 1 A cross-sectional view of the linear conveying system and the contactless power transmission system is shown along section line AA.

[0139] The fixed coil module 121 includes a mounting space 169 for electronic equipment.

[0140] The second installation space 169 of the electronic device includes a first circuit board 171 and a second circuit board 173 .

[0141] The first circuit board 171 includes the power transmission coil 125 and the first data coils 127 , 129 , 131 , 133 , and 135 .

[0142] For example, the second circuit board 173 includes the control device 151 .

[0143] According to an embodiment, the first circuit board 171 is magnetically separated from the second circuit board 173 by the ferrite material 175. This means that the ferrite material 175 has magnetic shielding properties. In particular, this means that the ferrite material 175 will magnetically shield the second circuit board 173 from the magnetic field of the coil of the first circuit board 171.

[0144] The ferrite material 175 also has the function of binding the magnetic field at each coil. Generally, as shown in the figure, a magnetic conductive material can be used instead of ferrite.

[0145] according to Figure 3 The front view shows a first possibility of arranging the coil module 121: Figure 3 As shown in the illustration, the coil module 121 is arranged outside the fixed motor module 111.

[0146] Compared with this first possibility, Figure 5 A second possibility for the arrangement of coil modules 121 is shown. Figure 5 Shows something like Figure 3 The corresponding main view of Figure 3 In contrast, the motor module 111 has an assembly space 179 in which the stationary coil module 121 is arranged, wherein the assembly space 179 is described only abstractly as a rectangle.

[0147] Figure 6 Shows Figure 2 The coil module 121 shown is coupled to another coil module 121 immediately adjacent thereto.

[0148] Figure 7 Two immediately adjacent coil modules 121 are shown in another embodiment.

[0149] Figure 7 The embodiment shown is partially similar to Figure 6 The illustrated embodiments correspond, so reference is made to the above description.

[0150] and Figure 7 Compared with the embodiment of the coil module 121 shown, Figure 6 The coil modules 121 in the illustrated embodiment each include a plurality of power transmission coils 125 .

[0151] exist Figure 7 In the illustrated embodiment, the power transmission coils 125 are arranged adjacent to each other in a plane.

[0152] Figure 8A section through two stationary coil modules 121 arranged directly adjacent to one another is shown. Figure 8 The left coil module 121 shown is given the reference numeral 701 in order to better distinguish it. Figure 8 The right coil module 121 shown in the cross section of FIG. 1 is additionally labeled 703 to better distinguish it. The left and right coil modules 701 and 703 have the same structure, so the following description of the left coil module 701 is also applicable to the right coil module, and vice versa.

[0153] The left fixed coil module 701 includes two first parts 181a and 181b of the power transmission coil. The parts 181a and 181b are both open to the outside. The outside usually refers to the direction away from the corresponding coil module. Therefore, the first left part 181a is opened to the left. Therefore, the first right part 181b is opened to the right.

[0154] Similarly, the right fixed coil module 703 includes two second parts of the power transmission coil, wherein, for the sake of clarity, only one of the two second parts (the left part) is shown, which is denoted by reference numeral 183a. The two second parts are configured to be open to the outside.

[0155] The left coil module 701 includes a right outer end 187 and a left outer end 189. Similarly, the right coil module 703 includes a right outer end (not shown) and a left outer end 189. The right end 187 of the left coil module 701 is opposite to the left end 189 of the right coil module 703.

[0156] The first right part 181b and the second left part 183a together form a power transmission coil 185. To this end, the two parts 181b and 183a are electrically conductively connected to each other, which is not shown here for the sake of clarity.

[0157] Similarly, the first left portion 181 b and the second right portion of the coil module 701 arranged on the left side of the left coil module 701 form a power transmission coil.

[0158] Similarly, the second right side portion of the right coil module 703 and the first left side portion of the coil module arranged on the right side of the right coil module 703 form a power transmission coil.

[0159] In this embodiment, the power transmission coils are distributed on two coil modules.

[0160] For example, the portions of the power transmission coil form half of the power transmission coil.

[0161] An advantage of this embodiment is that, for example, at the transition between coil modules the transmitted power does not drop as much as in the case of two adjacent power transmission coils of two immediately adjacent coil modules, which are not distributed over two coil modules.

[0162] In an embodiment not shown herein, the power transmission coil is a parallelogram. The advantage of this shape is that the transition between two corresponding power transmission coils is not tied to one position. In this way, the drop in power can also be alleviated to a certain extent. According to an embodiment not shown herein, the shape of the parallelogram can be different from a rectangle or a square.

[0163] Fig. 9 A cross section of two stationary coil modules 121 in another embodiment is shown.

[0164] Fig. 9 The fixed coil module 121 is shown with Figure 8 The two stationary coil modules 121 shown are partially identical. Reference is made to the above description.

[0165] In contrast, Fig. 9 The two coil modules 121 have a plurality of power transmission coils 125 between the two first portions 181 a and 181 b of the left coil module 701 and between the two second portions 183 a of the right coil module 703 .

[0166] The advantage of this embodiment is that the maximum length of the carriage can be overlapped with the power transmission coil. The carriage detunes the natural frequency of the power transmission resonant circuit including the power transmission coil and the power receiving coil. However, as described in this embodiment, each coil module is provided with a plurality of power transmission coils, and the remaining power transmission coils are not or only slightly affected by the carriage.

[0167] For example, Fig. 9 The width of the power transmission coil 125 of the coil module 121 is equivalent to the maximum length of the slide, so that the maximum length of the slide can be greater than the length of the power transmission coil.

[0168] Fig.10 The stationary coil module 121 is shown in different embodiments.

[0169] The coil module 121 includes two power transmission coils 125, wherein the two power transmission coils are provided with reference numerals 901 and 903 to better distinguish them. The two power transmission coils 901 and 903 are partially overlapped and arranged offset relative to each other. The power transmission coil 901 is arranged above the power transmission coil 903. Within the length range of the coil module 121, the two power transmission coils 901 and 903 will not extend, that is, they do not extend from the left end 189 of the coil module 121 to the right end 187 of the coil module 121. For example, the maximum length of each of the power transmission coils 901 and 903 is 75% of the length of the coil module 121.

[0170] For example, this has the following technical advantages: power transmission can be performed efficiently. In particular, this has the following technical advantages, that is, when the slide 103 moves along the fixed coil module 121, the power ripple that may be generated can be effectively reduced. In particular, this makes the power transmission relatively uniform without obvious power fluctuations.

[0171] Fig.11 A stationary coil module 121 in an embodiment is shown.

[0172] Fig.11 The fixed coil module 121 is shown with Fig.10 The fixed coil module 121 shown is partially the same. Reference is made to the above embodiment.

[0173] The difference is that multiple power transmission coils 1001 are provided instead of one upper power transmission coil 901; multiple power transmission coils 1003 are provided instead of one lower power transmission coil 903; and Fig.10 Similar to the power transmission coils 901 and 903, the power transmission coils are partially overlapped and arranged offset relative to each other.

[0174] For example, Fig.11 The width of the power transmission coil 1001 or the power transmission coil 1003 of the coil module 121 is equivalent to the maximum carriage length, so in terms of length, at most only one carriage exceeds the power transmission coil.

[0175] The advantage of this embodiment is that a maximum length of the carriage can be placed on the power transmission coil. The carriage will tune the natural frequency of the power transmission resonant circuit including the power transmission coil and the power receiving coil. However, since a plurality of power transmission coils are arranged on each coil module, the remaining power transmission coils are not affected by the carriage or are only slightly affected by the carriage.

[0176] An advantage of the embodiment in which the power transmission coil does not extend over two fixed coil modules is that, for example, electrical contact between the coil modules can be avoided for electrical contact between two parts of the power transmission coil, but this may result in power drops due to the presence of a gap between two adjacent power transmission coils of the two coil modules.

[0177] Fig.12 A plurality of transmission coils 125 arranged side by side are shown, and the transmission coils are specifically as follows: a first transmission coil 1101, a second transmission coil 1103, a third transmission coil 1105, a fourth transmission coil 1107, a fifth transmission coil 1109, a sixth transmission coil 1111, a seventh transmission coil 1113, an eighth transmission coil 1115 and a ninth transmission coil 1117.

[0178] For example, the width of each of the power transmission coils 125 is two-thirds of the sum of the widths of all the power receiving coils of the carriage 103 .

[0179] The power transmission coils 125 are energized in opposite directions, for example, in opposite directions or 180° out of phase. The coils 125 energized according to the first phase are marked with reference numeral 191, and the coils 125 energized according to the second phase offset by 180° from the first phase are marked with reference numeral 193 to better distinguish them.

[0180] Therefore, the first, third, fifth, seventh and ninth power transmission coils are energized according to the first direction. Accordingly, the second, fourth, sixth and eighth power transmission coils are energized 180° out of phase with respect to the first direction.

[0181] In an embodiment not shown herein, a ratio is provided Fig.12 The multiple transmission coils shown in the figure may be more or less than the transmission coils. The same applies to Fig.12 The embodiment shown.

[0182] Fig.12 Two power receiving coils 137 are also shown, which are specifically as follows: a first power receiving coil 195 and a second power receiving coil 197. The two power receiving coils 195 and 197 are located on a carriage not shown here, for example, Figure 1 On the carriage 103 of the linear transport system 101 shown.

[0183] According to the embodiment, the width of each of the two power receiving coils 195 and 197 is equivalent to half the width of the carriage 103. This means that according to this embodiment, the sum of the widths of the two power receiving coils 195 and 197 is equivalent to the width of the carriage 103.

[0184] Fig.13Three different positions of the two power receiving coils 195 , 197 are shown as the carriage moves along the power transmitting coil 125 .

[0185] At the first position 199, the first power receiving coil 195 is completely located above the first power transmitting coil, so it is 100% coupled with the first power receiving coil 1101. Considering the opposite current, this percentage and the following percentages respectively represent the overlap percentages of the corresponding power receiving coil and the corresponding power transmitting coil. The second power receiving coil 197 is located in the first position 199, which is the upper half of the first power transmitting coil 195 and the upper half of the second power transmitting coil 1103. Since the first power transmitting coil 1101 and the second power transmitting coil 1103 are energized in opposite directions, the respective inductive couplings cancel each other, so that the second power receiving coil in the first position 199 is not coupled with the first power transmitting coil 1101 and the second power transmitting coil 1103.

[0186] At the second position 201, the first power receiving coil 195 is completely located above the third power transmitting coil 1105, so it is 100% coupled to the third power transmitting coil 1105. The second power receiving coil 197 is completely located above the fourth power transmitting coil 1107, so it is 100% coupled to the fourth power transmitting coil 1105.

[0187] At the third position 203, the first power receiving coil 195 is completely located above the fifth power transmitting coil 1109, so it is 100% coupled with the sixth power transmitting coil 1111. Since the fifth power transmitting coil 1109 and the sixth power transmitting coil 1111 provide currents in opposite directions, the respective inductive couplings partially cancel each other, so that the first power receiving coil 195 is coupled with the fifth power transmitting coil 1109 by 60% in total.

[0188] At the third position 203 , the second power receiving coil 197 is completely located above the sixth power transmitting coil 1111 , and thus is 100% coupled to the sixth power transmitting coil 1111 .

[0189] Fig.14 Two stationary coil modules 121 are shown in another embodiment.

[0190] Fig.14 The left coil module 121 shown is additionally provided with reference numeral 1301. Fig.14 The right coil module 121 shown is denoted by reference numeral 1303 .

[0191] The left coil module 1301 includes Fig.12 The first, second and third power transmission line shafts 1101, 1103, 1105.

[0192] The right coil module 1303 includes Fig.12The fourth, fifth, sixth, seventh, eighth and ninth power transmission coils 1107, 1109, 1111, 1113, 1115, 1117.

[0193] In an embodiment not shown here, the coil modules 1301 , 1303 both include an equal number of power transmission coils.

[0194] like Fig.12 and Fig.13 As described above, each power transmission coil is energized in opposite directions.

[0195] Fig.14 Two power receiving coils 195, 197 are also shown.

[0196] The second power receiving coil 197 is completely located above the fourth power transmitting coil 1107 of the right coil module, and thus is 100% inductively coupled to the fourth power transmitting coil 1107 .

[0197] The first power receiving coil 195 is partially located above the third power transmitting coil 1105 and partially located above the gap 1305 between the left coil module 1301 and the right coil module 1303. In this regard, the inductive coupling of the first power receiving coil 195 with the third power transmitting coil 1105 is lower than that where the first power receiving coil 195 is completely located above the third power transmitting coil 1105.

[0198] Fig.14 The illustrated embodiment enables efficient and uniform power supply to the carriage even when the carriage between the left stationary coil module 1301 and the right stationary coil module 1303 is in transition.

[0199] The advantage of arranging two adjacent power receiving coils on the carriage is that, for example, when the carriage is transferred from one coil module to another, it can be ensured that one of the two power receiving coils is always located on the entire surface of one of the coil modules, thereby always ensuring the lowest transmission power.

[0200] This also has the advantage that the excitation of the power coils does not need to be synchronized. This means, for example, that according to an embodiment in which the power coil extends over two coil modules (the two parts of the power coil forming a common power coil), there is no need to connect the coil modules directly.

[0201] Thus, the problem of power ripple during the transition between the coil and the module caused by the gap is effectively solved.

[0202] Fig.15 A flow chart showing a method for operating a linear conveyor system comprising the following steps:

[0203] A control device is used to control 221 a power source for the one or more fixed coil modules, so that at least one of the one or more power transmission coils and / or at least one of the one or more first data coils supply voltage to each other, thereby transmitting power to the slide 225 in a contactless manner through the inductive coupling between the power transmission coil to which voltage is applied and the power receiving coil, and / or transmitting data to the slide 227 in a contactless manner through the inductive coupling between the first data coil to which voltage is applied and the second data coil and / or receiving data from the slide 1401.

[0204] The concept of the invention is to allow a uniform transmission of electrical energy without violent power fluctuations. In order to avoid jumps in different oscillating circuits (formed by coils), for example, the power transmission coil and / or the first coil and / or the second coil are actively excited at a frequency corresponding to the resonance frequency. For example, bidirectional synchronous communication is achieved by magnetic pulses or electromagnetic pulses (signals, waves). Synchronous data transmission advantageously allows a "distributed clock" (phase-controlled loop) to be run in the receiver (slide). For example, this makes it possible to perform a precisely synchronized sequence of movements by means of a clamp on the slide. In particular, this makes it possible to send a movement command for a certain movement to the slide independently of the communication cycle.

[0205] In the embodiment shown here, the carriage coil module comprises one or more power storage devices for storing the transmitted power. For example, such power storage devices are electrolytic capacitors.

Claims

1. A linear conveying system (101), comprising: A movable slide (103), a guide rail (105) for guiding the carriage (103), A linear motor (107) for driving the carriage (103) along the guide rail (105), the linear motor (107) comprising a stator (109) and a rotor (115), the stator (109) comprising at least one motor module (111) fixedly arranged along the guide rail (105), each motor module (111) comprising one or more drive coils (113), the rotor (115) being arranged on the carriage (103) and comprising one or more magnets (117), and A contactless power and data transmission system (119), the contactless power and data transmission system (119) comprising the following: one or more fixed coil modules (121) fixedly arranged along the at least one motor module (111), one or more carriage coil modules (123) arranged on the carriage (103), The one or more fixed coil modules (121) respectively include one or more power transmission coils (125) and one or more first data coils (127, 129, 131, 133, 135), The one or more carriage coil modules (123) include one or more power receiving coils (137) capable of inductively coupling with the one or more power transmission coils (125), and one or more second data coils (139, 141, 143) capable of inductively coupling with the one or more first data coils (127, 129, 131, 133, 135), a control device (151) for controlling the power supply (145) of the one or more fixed coil modules (121) to apply voltage to at least one of the one or more power transmission coils (125) and / or to at least one of the one or more first data coils (127, 129, 131, 133, 135), Thus, power is transmitted to the carriage (103) in a contactless manner through inductive coupling between the power transmission coil (125) to which voltage is applied and the power receiving coil (137), and / or data is transmitted to the carriage (103) in a contactless manner through inductive coupling between the first data coil (127, 129, 131, 133, 135) to which voltage is applied and the second data coil (139, 141, 143) or data from the carriage (103) is received. Characterized in that the contactless power and data transmission system (119) includes a communication interface for receiving a reference time via a communication network, wherein the control device (151) is used to control the power supply (145) based on the reference time so as to transmit a clock signal based on the reference time as data to the slide (103) in a contactless manner.

2. The linear conveying system (101) according to claim 1, wherein: The first data coil (127, 129, 131, 133, 135) and the second data coil (139, 141, 143) constitute first, second and third communication channels, so as to transmit data to the slide (103) through the first communication channel, receive data from the slide (103) through the second communication channel, and transmit a clock signal based on the reference time to the slide (103) through the third communication channel.

3. The linear conveying system (101) according to claim 1 or 2, wherein: The carriage (103) has a carriage power supply coupled to the one or more power receiving coils (137), wherein the power receiving coils (137) are used to provide the transmitted power to the carriage power supply; the carriage (103) includes a control device coupled to the carriage power supply, and is used to provide power from the carriage power supply.

4. The linear conveying system (101) according to claim 3, wherein: The carriage power supply is coupled to at least one of at least one or more second data coils (139, 141, 143), wherein the carriage control device is used to control the carriage power supply to provide voltage to at least one of the at least one second data coil (139, 141, 143) coupled to the carriage power supply, so that data can be transmitted contactlessly by the carriage (103) through inductive coupling between the second data coil (139, 141, 143) to which voltage has been applied and the first data coil (127, 129, 131, 133, 135).

5. The linear conveying system (101) according to claim 3, wherein: The carriage (103) includes an electric device (157) coupled to the carriage power supply so as to be able to provide power to the electric device, wherein the carriage control device is coupled to the one or more second data coils (139, 141, 143) to receive the transmission data, and the carriage control device is used to control the electric device (157) based on the received data.

6. The linear conveying system (101) according to claim 1, wherein: At least one of the one or more fixed coil modules (121) extends along the at least one motor module (111), wherein the at least one fixed coil module (121) includes exactly one power transmission coil (125), and the power transmission coil extends along the at least one motor module (111) from a first end of the at least one coil module to a second end of the coil module opposite to the first end.

7. The linear conveying system (101) according to claim 1, wherein: At least one of the one or more fixed coil modules (121) extends along the at least one motor module (111), wherein the at least one fixed coil module (121) includes a plurality of power transmission coils (125) arranged along the at least one motor module (111) in an offset manner relative to each other.

8. The linear conveying system (101) according to claim 7, wherein: The plurality of power transmission coils (125) are partially overlapped and arranged offset relative to each other.

9. The linear conveying system (101) according to claim 1, wherein: A plurality of fixed coil modules (121) extending along the at least one motor module (111) are provided, wherein at least two of the fixed coil modules are arranged adjacent to another fixed coil module, wherein the two adjacently arranged fixed coil modules (121) each include a portion of a power transmission coil (125), and the two portions formed in this way form the power transmission coil (125).

10. The linear conveying system (101) according to claim 1, wherein: At least one of the one or more fixed coil modules (121) has a circuit board including the one or more power transmission coils (125) and the one or more first data coils (127, 129, 131, 133, 135), and the circuit board constitutes the outer side of the at least one motor module (111).

11. A method for operating a linear conveying system, the linear conveying system comprising one or more fixed coil modules (121) fixedly arranged along a motor module (111), one or more carriage coil modules (123) arranged on a carriage (103), in, The one or more fixed coil modules (121) respectively include one or more power transmission coils (125) and one or more first data coils (127, 129, 131, 133, 135), The one or more carriage coil modules (123) include one or more power receiving coils (137) capable of inductively coupling with the one or more power transmission coils (125), and one or more second data coils (139, 141, 143) capable of inductively coupling with the one or more first data coils (127, 129, 131, 133, 135). The operation method includes the following steps: Using a control device (151), a power source (145) for the one or more fixed coil modules (121) is controlled (221) so that at least one of the one or more power transmission coils (125) and / or at least one of the one or more first data coils (127, 129, 131, 133, 135) supplies voltage to each other, thereby transmitting power to the carriage (103) in a non-contact manner through inductive coupling between the power transmission coil (125) to which voltage is applied and the power receiving coil (137), and / or transmitting data to the carriage (103) in a non-contact manner through inductive coupling between the first data coil (127, 129, 131, 133, 135) to which voltage is applied and the second data coil (139, 141, 143) and / or receiving data from the carriage (103), It is characterized in that The control device (151) is used to control the power supply (145) based on a reference time so as to transmit a clock signal based on the reference time as data to the carriage (103) in a contactless manner.

12. The method according to claim 11, wherein: The first data coil (127, 129, 131, 133, 135) and the second data coil (139, 141, 143) constitute first, second and third communication channels, so as to transmit data to the slide (103) through the first communication channel, receive data from the slide (103) through the second communication channel, and transmit a clock signal based on the reference time to the slide (103) through the third communication channel.

13. A contactless power and data transmission system (119) for a linear conveying system (101), the linear conveying system comprising: A movable carriage (103), a guide rail (105) for guiding the carriage (103), and a linear motor (107) for driving the carriage (103) along the guide rail (105), wherein the linear motor (107) comprises a stator (109) and a rotor (115), the stator (109) comprises at least one motor module (111) fixedly arranged along the guide rail (105), each motor module (111) comprising one or more drive coils (113), and the rotor (115) is arranged on the carriage (103) and comprises one or more magnets (117); the contactless power and data transmission system (119) comprises the following: one or more fixed coil modules (121) fixedly arranged along the at least one motor module (111), one or more carriage coil modules (123) arranged on the carriage (103), The one or more fixed coil modules (121) respectively include one or more power transmission coils (125) and one or more first data coils (127, 129, 131, 133, 135), The one or more carriage coil modules (123) include one or more power receiving coils (137) capable of inductively coupling with the one or more power transmission coils (125), and one or more second data coils (139, 141, 143) capable of inductively coupling with the one or more first data coils (127, 129, 131, 133, 135). and a control device (151) for respectively controlling a power source (145) of the one or more fixed coil modules (121) to apply voltage to at least one of the one or more power transmission coils (125) and / or to at least one of the one or more first data coils (127, 129, 131, 133, 135), Thus, power is transmitted to the carriage (103) in a contactless manner through inductive coupling between the power transmission coil (125) to which voltage is applied and the power receiving coil (137), and / or data is transmitted to the carriage (103) in a contactless manner through inductive coupling between the first data coil (127, 129, 131, 133, 135) to which voltage is applied and the second data coil (139, 141, 143) or data from the carriage (103) is received. It is characterized in that The contactless power and data transmission system (119) comprises a communication interface for receiving a reference time via a communication network, wherein the control device (151) is used to control the power supply based on the reference time so as to transmit a clock signal based on the reference time as data to the carriage (103) contactlessly.

14. The system according to claim 13, wherein: The first data coil (127, 129, 131, 133, 135) and the second data coil (139, 141, 143) constitute first, second and third communication channels, so as to transmit data to the slide (103) through the first communication channel, receive data from the slide (103) through the second communication channel, and transmit a clock signal based on the reference time to the slide (103) through the third communication channel.

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