Workpiece support system, workpiece support assembly, charging station, mobile transport device, and component assembly

Abstract

The invention relates to a workpiece support system (100), comprising: - a support device (101) on which a workpiece (401) can be arranged, wherein - an energy supply device (201) can be arranged on the support device (101), and - the support device (101) is designed to provide an interface (103) for electrically contacting the energy supply device (201). The invention additionally relates to a workpiece support system, to a charging station, to a mobile transport device, and to a component assembly.

Description

[0001] Description

[0002] title

[0003] Workpiece carrier arrangement, workpiece carrier assembly, loading station, mobile transport device, component assembly

[0004] State of the art

[0005] DE 102018220 561 A1 describes a driverless transport system (FTS) on a raised floor, wherein the raised floor comprises a power supply device via which the FTS can be charged contactlessly.

[0006] Core and advantages of the invention

[0007] Automated guided vehicles (AGVs) are used, for example, in industrial manufacturing and assembly. These systems are designed, among other things, to transport workpieces / components within a manufacturing or assembly facility. Their function and design are typically based on conventional transport systems, meaning they can include, for example, a tractor, one or more wagons / trailers, or electric lift trucks.

[0008] The invention relates to a workpiece carrier arrangement, a workpiece carrier assembly, a loading station, a mobile transport device (hereinafter also referred to as mobile mechatronic object (MMO)) and a component assembly.

[0009] An advantage of the invention with the features of the independent patent claims, in particular the outsourcing of the energy supply of a mobile transport device to a workpiece carrier arrangement, is that the size and type of energy storage device can be adjusted more flexibly to line requirements, since no installation space in the mobile transport device has to be provided for the energy supply and, in particular, there is no need to install the energy supply device in the mobile transport device. In particular, depending on requirements / boundary conditions, the energy supply devices can be selected and easily arranged on the tool carrier arrangement, removed from it, or replaced. If, for example, an energy storage device with more energy is required in order to fulfil the task of the mobile transport device, the energy supply device on the tool carrier arrangement can simply be replaced by aThe energy supply device can be replaced by a power supply device dimensioned accordingly. Alternatively or additionally, a further power supply device can be arranged on the tool carrier arrangement and / or a further tool carrier arrangement with a further power supply device can be arranged on the mobile transport device, for example on the existing tool carrier arrangement, in order to meet the energy supply requirements of the mobile transport device. In particular, the storage size of the energy storage device of the power supply device can be flexibly adapted to the task to be performed by the mobile transport device, in particular with regard to the boundary conditions, such as the goods being transported, the transport quantity, the transport distance, etc., and the potential energy requirement derived therefrom.This reduces the number of variants of mobile transport devices, as the mobile transport devices can then be used flexibly for a variety of tasks. A further advantage is that the mobile transport devices can be available even during charging processes, as only a workpiece carrier assembly, comprising the workpiece carrier arrangement and the energy supply device, remains in the charging station for the charging process, rather than the mobile transport device itself. In principle, the mobile transport device can be equipped with a new (charged) workpiece carrier assembly during this time, so that the availability of the mobile transport device is only limited by the time required to replace the empty workpiece carrier assembly, or one that is no longer sufficiently charged for the upcoming task, with a full one, or one that is sufficiently charged for the upcoming task.In other words, decoupling the MMO and the power supply / charging process enables an increase in the utilization / usage time of the MMO. If, for example, an overhead of charged MMOs is required due to logistical constraints, this would be more cost-effective and space-efficient, since this would primarily require a workpiece carrier assembly with a power supply (e.g., including at least one battery) rather than complete vehicles with wheels, control system, sensors, etc. as backups.

[0010] This is achieved in particular with a workpiece carrier arrangement according to claim 1, comprising a carrier device on which a workpiece can be arranged, which is characterized in that a power supply device can be arranged on the carrier device, and which is characterized in that the carrier device is designed to provide an interface for electrical contacting of the power supply device.

[0011] Furthermore, this is achieved with a workpiece carrier assembly comprising a workpiece carrier arrangement and a power supply device, wherein the workpiece carrier assembly is characterized in that the power supply device is arranged on a carrier device of the workpiece carrier arrangement. In particular, the carrier device is configured to provide an interface for electrically contacting the power supply device.

[0012] The workpiece carrier assembly serves, in particular, as a carrier on which one or more workpieces or components can be arranged, in particular fastened, and / or positioned. In particular, at least one workpiece can be arranged on the workpiece carrier assembly. In particular, the workpiece carrier assembly is used to transport the at least one arranged workpiece along a production or assembly line through several production and / or assembly stations. For example, the workpiece can be processed directly on the workpiece carrier assembly in the various production and / or assembly stations, in particular by robots or workers. In addition to transporting at least one workpiece, the workpiece carrier assembly also enables a carrying, holding, and / or positioning function during cleaning or storage of the workpiece. In particular, the use of the workpiece carrier assembly enables the automation of these processes.

[0013] “X is arranged on Y” can be understood in the following in particular to mean that X is arranged on, under, adjacent to, in physical contact with Y, but it can also mean in particular that X is connected to Y in any way, for example X can be held or carried by Y, X can be at least partially arranged in Y or X can be attached to Y.

[0014] The carrier device serves to hold at least one workpiece; in other words, at least one workpiece can be arranged on the carrier device. The carrier device can, in particular, comprise a base plate. Depending on the application, the carrier device can be made of different materials or material combinations, which, for example, comprise metal (e.g., aluminum, stainless steel) and / or plastic. In particular, the carrier device can comprise a base plate of any shape, for example, round or rectangular, which preferably assumes a supporting function. For example, the carrier device can additionally have further elements / structures, which in particular assist in holding and / or aligning workpieces and / or the energy supply device, and which in particular are arranged or can be arranged on or at the base plate, such as, for example,

[0015] • Limiting elements that delimit the receiving area of ​​the support device for workpieces and / or the energy supply device: for example, elevations on the base plate, attached strips, etc.

[0016] • Separation aids, which enable the separation of workpieces on the carrier device, such as cams,

[0017] • Indexing aids, which are used in particular for precise adjustment at the machining station, such as indexing bushings,

[0018] • Positioning aids which enable a targeted alignment of at least one workpiece and / or the energy supply device on the carrier device: for example positioning bushings, bores, recesses, receiving elements adapted to the workpiece geometry, such as recesses for receiving round or rounded workpieces, etc.

[0019] • Fastening elements that reduce or prevent slipping of the workpiece and / or the energy supply device, such as straps, magnetic holding elements, etc.

[0020] • Guide elements, which can be particularly adapted to a conveyor system of the workpiece carrier arrangement, such as slide rails,

[0021] • a receiving device for receiving the at least one workpiece and / or the energy supply device, for example a holder adapted to a workpiece geometry or the energy supply device, which is or can be applied to the base plate.

[0022] The energy supply device can, in particular, be an arrangement that is designed to be electrically contactable and provides electrical energy to a consumer unit that can be connected to the energy supply device, in particular a mobile transport unit. In particular, the energy supply device can comprise at least one energy storage device, such as a battery arrangement, a rechargeable battery arrangement, etc. The energy supply device can be arranged on the carrier device. The energy supply device can, in particular, be coupled to the workpiece carrier arrangement in a modular manner, i.e., not be permanently installed therein. Alternatively, it is also conceivable for the energy supply device to be permanently installed with the workpiece carrier arrangement.

[0023] In particular, a receiving area for supply infrastructure, in particular the energy supply device, can be provided on the support device, which is, for example, structurally and / or functionally separated from the rest of the support device. A receiving area is an area that can receive an object, here the energy supply device, i.e. in which the energy supply device can be arranged, in particular fastened. In particular, the support device can comprise at least a selection of the following elements in the receiving area: • Fastening elements to establish a - in particular detachable - mechanical connection between the energy supply device and the support device, in other words, to fasten the energy supply device to the support device,

[0024] • Insulating arrangement, such as an electrically insulating layer on the support device in the receiving area for supply infrastructure, on which the energy supply device can be arranged, so that in particular unintentional electrical contacting of the energy supply device by the support device can be avoided

[0025] • a coupling arrangement, in particular an arrangement for establishing a mechanical and / or electrical connection between the energy supply device and the interface or between the energy supply device and the connectable consumption unit, in particular a mobile transport device.

[0026] The interface for electrically contacting the energy supply device can in particular comprise a recess or opening in the carrier device in the receiving area of ​​the energy supply device, which leaves a contacting area, in particular connections, on the energy supply device, at which electrical energy can be provided to supply a consumption unit, so that the energy supply device, when arranged on the carrier device, can be electrically contacted for a consumption unit, ie that the energy supply of the consumption unit can be provided by the energy supply device arranged on the carrier device.

[0027] Alternatively or additionally, the interface of the workpiece carrier arrangement and / or the energy supply device can comprise at least one contacting element, which is arranged in particular on the carrier device or the energy supply device, via which an electrical energy supply can be provided for a consumption unit connectable to the workpiece carrier arrangement, in particular a mobile transport device. In other words, electrical contact between the energy supply device and the consumption unit can be established via this contacting element. The consumption unit can, for example, be equipped with the matching counterpart of the contacting element, so that an electrical connection / contact between the consumption unit and the energy supply device can be established by bringing the contacting element of the interface and the counterpart into contact.The contacting element can in particular comprise at least one spring contact.

[0028] Preferably, the interface and / or the power supply device comprise at least one contacting element, which is located at the same position on the carrier device, particularly for all workpiece carrier arrangements. This has the advantage that an electrical connection can be established between the power supply device and the consumption unit, regardless of the exact design of the power supply device, in particular regardless of the geometry of the power supply device, the nature of the electrical connections, and their arrangement on the power supply device.

[0029] In particular, a mobile transport device can be provided as the consumption unit.

[0030] According to one embodiment, the electrical contact between the power supply device, which is arranged on the workpiece carrier assembly, and MMO is established by means of at least one spring contact, wherein the spring contact can be designed as described above, in particular as part of the workpiece carrier assembly and / or the power supply device. The electrical contact, i.e., the closing of an electrical circuit, is then not achieved by inserting a pin into a socket, as with connectors, but by contacting with a spring-loaded pin. Other names for spring contact are test pin, test probe, spring-loaded contact / pin, test pin, pogo pin, or SLC (spring-loaded contact).Spring contacts represent a proven technology for reliable contacting, particularly of uneven surfaces, and are therefore particularly suitable for simple, reliable, and robust electrical contacting between the energy supply device and the MMO, thus ensuring high functional reliability. The spring contact is therefore very well suited for the electrical contacting of energy storage devices, such as rechargeable batteries or battery compartments of the energy supply device. Spring contacts can, in particular, comprise several spring contact pins, which are, for example, assembled in a plastic housing. For example, the electrical contacting between the energy supply device of the workpiece carrier arrangement and the MMO can be realized via a magnetic connector. For this purpose, the contacting elements, in particular the spring contacts described above or their housings, and the counterparts of the consumption unit (e.g.MMO) can be provided with magnetic elements, thus creating a magnetic connector.

[0031] According to one embodiment, the energy supply device comprises at least a first energy storage device and a second energy storage device, wherein the second energy storage device is designed as a supercapacitor. In particular, the supercapacitor is configured to provide electrical energy for charging the first energy storage device. This advantageously enables rapid charging of the first energy storage device, so that the MMO connected to the workpiece carrier assembly can be quickly provided with additional energy by the first energy storage device. In particular, electrical contact is established between the first energy storage device and the consumption unit, wherein the first energy storage device can be charged by additional energy storage devices.One advantage is that there is no need to replace the workpiece carrier assembly or the power supply unit to provide additional electrical energy, yet the capacity of the power supply unit can be expanded modularly and thus made available to the consumption unit. This increases the availability of the MMO. Particularly in environments with limited charging options and / or high consumption of the MMOs, energy can be provided to the MMO at short notice, for example to control a charging station. In particular, the supercapacitor can thus supplement an existing energy storage device, such as a battery. Supercapacitors, also called (electrochemical) supercapacitors or ultracapacitors, are a further development of double-layer capacitors. Furthermore, they can be recharged a virtually unlimited number of times, with around one million charging cycles.In addition, their exceptionally low internal resistance allows them to deliver high currents in a very short time. They are therefore particularly suitable for delivering large amounts of power quickly and reliably. Due to their significantly lower energy density compared to rechargeable batteries of the same weight, while offering many times the power density, they are characterized by comparatively fast charging and discharging times, which can reduce the charging pauses for the workpiece carrier assemblies and thus, in particular, fewer workpiece carrier assemblies are provided as "overhead." A particular advantage is that the supercapacitor can charge the other energy storage device, in particular a battery, particularly quickly, thus increasing the availability of the MMO equipped with such a workpiece carrier assemblies.

[0032] A charging station for electrically charging the workpiece carrier assembly, which comprises the workpiece carrier arrangement and the energy supply device, comprises a holding device for holding the workpiece carrier assembly during the charging process, and a charging device. The charging device is configured to provide electrical energy for charging the energy supply device. Furthermore, the charging device is electrically connectable to the energy supply device of the workpiece carrier assembly held by the holding device for charging. In particular, charging takes place via the interface of the tool carrier arrangement on which the energy supply device is arranged. In other words, the charging device is configured to fully or at least partially charge the energy supply device, in particular at least one energy storage device of the energy supply device.

[0033] According to one embodiment, at least one contacting element, such as at least one spring contact, of the workpiece carrier assembly can be used for electrically contacting the charging device, i.e., electrical contact between the power supply device and the charging device can be established via the contacting element, in particular a spring contact. In particular, the charging device comprises a counterpart to the contacting element.

[0034] According to one embodiment, the holding device is designed as a rack system for accommodating a plurality of workpiece carrier assemblies and, in particular, is configured for parallel charging of the power supply devices of the workpiece carrier assemblies. One advantage is that the power supply devices can thus be charged in a space-saving manner and, in particular, parallel to one another. A rack system is a type of hardware used to safely, efficiently, and orderly store and organize electronic components or systems—here, the workpiece carrier assemblies—for the charging process.

[0035] According to one embodiment, the charging station comprises a loading unit for introducing the at least one workpiece carrier assembly to be loaded into the holding device and / or an unloading unit for removing the at least one loaded workpiece carrier assembly from the holding device. One advantage is that the charging process can thus be automated, in particular fully automated, by transferring the workpiece carrier assembly from the mobile transport device to the unloading unit and / or the mobile transport unit receiving a loaded workpiece carrier assembly from the unloading unit. Via the interface, for example, when arranging the workpiece carrier assembly on the mobile transport device, an electrical contact is established between the mobile transport device and the energy supply device, so that the mobile transport device is supplied with electrical energy and, in particular, can leave the charging station again.

[0036] According to one embodiment, the loading system can be configured to remove a workpiece carrier assembly from a mobile transport device and place it into the holding device, in particular one of the levels of the rack system, so that electrical contact is established between the power supply device and the loading device. According to one embodiment, the unloading system can be configured to remove a workpiece carrier assembly from the holding device and place it on a mobile transport device.

[0037] A mobile transport facility (MMO) comprising

[0038] • a drive platform to provide a drive for the mobile transport device,

[0039] • a load-carrying device connected to the drive platform for receiving a workpiece carrier assembly, in particular a workpiece carrier assembly as described above, and

[0040] • an energy collector, wherein the energy collector is configured for electrical contact between the energy supply device and the mobile transport device to supply the mobile transport device with electrical energy. This has the advantage that the energy supply of the mobile transport device can be flexibly adapted by simply replacing the workpiece carrier assembly with a workpiece carrier assembly with a different energy supply device. Furthermore, the availability of such a mobile transport device as described above is higher than that of a mobile transport device with a built-in energy supply device, since the workpiece carrier assembly can be removed from the mobile transport device for charging and can be charged separately.After removing the workpiece carrier assembly to be loaded, the mobile transport device can be equipped with a fully or at least partially loaded workpiece carrier assembly and can thus be available to take over tasks during the loading process of the workpiece carrier assembly to be loaded.

[0041] The mobile transport device is designed in particular as an autonomous vehicle. Alternatively, the mobile transport device is designed as a hovering or flying vehicle. In particular, the mobile transport device is designed without people. Alternatively or additionally, the mobile transport device is designed in particular to transport goods or the like, in particular the mobile transport device is set up to enable the transport of goods or the like within a production line. For this purpose, in particular a workpiece carrier arrangement or a workpiece carrier assembly is placed on the mobile transport device, on which the goods can be arranged. In particular, the goods are delivered to a station together with the workpiece carrier arrangement or the workpiece carrier assembly and, if necessary,After completion of the production or assembly step implemented there, the goods are picked up again by another mobile transport device and transported to the next station. For example, the mobile transport device is implemented as a transport robot, low-floor vehicle, etc. Preferred designations are AGV (Automated Guided Vehicle) and / or FTF (Driverless Transport Vehicle), whereby the mobile transport device is also referred to as a Mobile Mechatronic Object (MMO). The mobile transport device is preferably used for transport within a production line. Optionally, the mobile transport device can be designed as a train consisting of a tractor, one or more wagons / trailers, or as an electric pallet truck.

[0042] The drive platform is designed to enable mobility or movement, particularly autonomous movement, of the transport device. It can include, among other things, everything that enables the MMO to move, in particular the motor, transmission, but also wheels, axles, steering, brakes, etc.

[0043] Examples of load handling devices include active load handling devices such as a roller conveyor, a chain conveyor, a belt conveyor, a reach fork, a rigid fork, a telescopic fork, or passive load handling devices such as a plate or a weight-bearing surface.

[0044] The energy collector is configured to contact the energy supply device. For this purpose, it can be designed, in particular, as a counterpart to the contacting element of the workpiece carrier assembly, so that the energy collector and the contacting element can jointly establish electrical contact. For example, the contacting element can comprise a spring contact, and the energy collector can comprise a contact pad, whereby an electrical connection between the workpiece carrier assembly and the MMO is established when the spring contact and the contact pad touch each other, i.e., when the spring contact is touched.

[0045] According to one embodiment, the mobile transport device can additionally comprise an internal power supply device for supplying the mobile transport device with electrical energy. In particular, this can be designed such that the mobile transport device can cover short distances without a workpiece carrier assembly and / or the power supply for providing basic functionalities, such as communication with a higher-level controller, is guaranteed for a defined period of time. In particular, the capacity of the internal power supply device can be smaller or significantly smaller than that of the power supply device of the workpiece carrier assembly.

[0046] According to one embodiment, at least one additional workpiece carrier assembly can be arranged on the load-handling device. This assembly can, for example, be arranged next to or on top of the workpiece carrier assembly already arranged on the mobile transport device.

[0047] A component assembly comprising at least one workpiece carrier assembly and a mobile transport device, wherein the workpiece carrier assembly is arranged on or on the load-carrying device of the mobile transport device, in particular is accommodated by the load-carrying device, is characterized in that the mobile transport device is electrically connected to the energy supply device via the energy collector of the mobile transport device. In other words, the energy storage device for supplying energy to the MMO is located on the workpiece carrier assembly, which is placed on the MMO.

[0048] For example, a method for loading the component assembly may include the following steps:

[0049] • Moving to a loading unit of the charging station, through the component assembly,

[0050] • Inserting the workpiece carrier assembly of the component assembly into the charging station, • Removing an at least partially charged workpiece carrier assembly from the charging station and

[0051] • Arranging the removed workpiece carrier assembly on the mobile transport unit.

[0052] In other words, an MMO whose energy storage device needs to be charged can approach the charging station and, via the loading unit, place the workpiece carrier assembly containing the energy storage device to be charged into the charging station's holding device. It can also accept an already charged workpiece carrier assembly via the unloading unit and electrically connect to it, allowing the MMO to leave the charging station directly with a charged energy storage device. This advantageously increases the availability of the MMOs.

[0053] Short description of the drawings

[0054] Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description. Identical reference numerals in the figures denote identical or equivalent elements.

[0055] It shows

[0056] Fig. 1 shows a schematic diagram of a component assembly in a side view, comprising a workpiece carrier arrangement, a power supply device and a mobile transport device and

[0057] Fig. 2 a schematic diagram of a charging station in a side view.

[0058] Fig. 1 shows a schematic diagram of a component assembly 400 in a side view. Shown is a workpiece carrier arrangement 100 comprising a carrier device 101, wherein the carrier device 101 provides an interface 103 for electrically contacting the energy supply device 201. In this exemplary embodiment, the carrier device 101 is designed as a plate arranged on a mobile transport device 300. A power supply device 201 and a workpiece / transport item 401 are arranged on the carrier device 101 in a recess. In this exemplary embodiment, the interface 103 comprises a recess in the carrier plate 101 and a through-hole through the carrier plate 101. The recess defines a receiving area for the energy supply device 201.The through-hole extends from a side of the carrier plate 101 facing the mobile transport device 300 to a side of the carrier plate 101 facing the energy supply device 201. In this exemplary embodiment, the energy supply device 201 comprises spring contacts in the region of the through-hole (not shown here for the sake of clarity), and the mobile transport device 300 comprises a contact pad 302 in the region of the through-hole. The spring contacts extend through the through-hole from the energy supply device 201 to the contact pad 302, which is designed in particular as a counterpart to the spring contacts, wherein the contacting of the spring contacts and the contact pad 302 establishes an electrical connection between the energy supply device 201 and the mobile transport device 300, such that the energy supply device 201 can supply the mobile transport device 300 with electrical energy.For example, the wheels 301 of the mobile transport device 300 can be driven to enable the mobile transport device 300 to move. Furthermore, the control of the mobile transport device 300 and a communication unit of the mobile transport device 300, by means of which the mobile transport device 300 can communicate with a higher-level control unit, in particular for the purpose of task distribution and / or planning, can also be supplied with energy. The workpiece carrier assembly 200, comprising the workpiece carrier arrangement 100 and the energy supply device 201, is arranged on a load-carrying device 303 of the mobile transport device 300. In this exemplary embodiment, the load-carrying device 303 is designed as a surface on the upper side of the mobile transport device 300.However, other configurations of the load-handling device 303 are also possible, for example, comprising a roller conveyor, a chain conveyor, a belt conveyor, a push fork, a rigid fork, a telescopic fork, etc. The component assembly 400 shown in Fig. 1 comprises the workpiece carrier assembly 200 and the mobile transport device 300.

[0059] Fig. 2 shows, by way of example, a schematic diagram of a charging station 800 comprising a holding device 801 in the form of a rack system. In this exemplary embodiment, the holding device 801 comprises four levels arranged one above the other, each of which is configured to receive a workpiece assembly 200 for charging. A material carrier assembly 200 is arranged in each of the levels. A different embodiment of a material carrier assembly 200 than that shown in Fig. 1 is shown here by way of example, wherein the material carrier assembly 200 shown in Fig. 1 can also be arranged in such a charging station 800. Each level is provided with a charging device comprising a charging connection 802, here in the form of a contact pin or pad, via which the respective energy supply device 201 arranged on the level can be electrically contacted in conjunction with the respective interface 103 of the workpiece carrier assembly 200 for charging.In this exemplary embodiment, the energy supply device 201 of the workpiece carrier assembly is arranged in a recess in the carrier device 101 so that it does not protrude beyond the carrier device 101. Furthermore, the loading station 800 in this exemplary embodiment comprises a loading and unloading system 803, which comprises a lifting and lowering receiving base, for example similar to a forklift, with which the workpiece carrier assemblies 200 can be removed from the levels and / or arranged on them. The receiving base 804 is configured to remove at least one workpiece carrier assembly 200 from the holding device 801 and / or to insert at least one workpiece carrier assembly 200 into the holding device 801. In particular, the receiving base 804 can be designed to be horizontally and / or horizontally movable for this purpose.

Claims

Claims 1. Workpiece carrier arrangement (100), comprising • a carrier device (101) on which a workpiece (401) can be arranged, characterized in that • a power supply device (201) can be arranged on the carrier device (101), and • the carrier device (101) is designed to provide an interface (103) for electrical contacting of the energy supply device (201).

2. Workpiece carrier arrangement (100) according to claim 1, characterized in that an electrical energy supply for a consumption unit connectable to the workpiece carrier arrangement (100), in particular a mobile transport device (300), can be provided via the interface (103).

3. Workpiece carrier assembly (200), comprising a workpiece carrier arrangement (100), in particular according to one of the preceding claims, and a power supply device (201), characterized in that the power supply device (201) is arranged on a carrier device (101) of the workpiece carrier arrangement (100).

4. Workpiece carrier assembly (200) according to claim 3, characterized in that the energy supply device (201) comprises one or more energy stores, in particular wherein the energy supply device (201) comprises at least a first energy store and a second energy store, wherein the second energy store is designed as a supercapacitor.

5. Workpiece carrier assembly (200) according to one of claims 3 or 4, characterized in that the energy supply device (201) and / or a The interface (103) of the workpiece carrier arrangement (100) comprises at least one contacting element via which an electrical energy supply can be provided for a consumption unit that can be connected to the workpiece carrier assembly (200), in particular a mobile transport device (300).

6. Charging station (800) for electrically charging a workpiece carrier assembly (200), in particular according to one of claims 3 to 5, wherein the workpiece carrier assembly (200) comprises a workpiece carrier arrangement (100) and a power supply device (201), wherein the charging station (800) comprises a holding device (801) for holding the workpiece carrier assembly (200) during the charging process, and a charging device (802), • wherein the charging device (802) is configured to provide electrical energy for charging the energy supply device (201), and • wherein the charging device (802) is electrically connectable to the energy supply device (201) of the workpiece carrier assembly (200) held by the holding device (801) for charging.

7. Charging station (800) according to claim 6, wherein the holding device (801) is configured to hold a workpiece carrier assembly (200) and at least one further workpiece carrier assembly, and wherein the charging device (800) is electrically connectable to the energy supply device (201) and / or to a further energy supply device of the further workpiece carrier assembly for the respective charging.

8. Charging station (800) according to claim 7, wherein the holding device (801) is designed as a rack system for receiving a plurality of workpiece carrier assemblies (200) and is in particular configured for parallel charging of the energy supply devices (201) of the workpiece carrier assemblies (200).

9. Charging station (800) according to one of claims 6 to 8, wherein the charging station comprises a loading unit (803) for introducing the at least one Workpiece carrier assembly (200) into the holding device (801) and / or a Unloading unit (803) for removing the at least one Workpiece carrier assembly (200) from the holding device.

10. Mobile transport device (300), comprising • a drive platform for providing a drive for the mobile transport device (300), • a load-bearing device (303) connected to the drive platform for receiving a workpiece carrier assembly (200), in particular a workpiece carrier assembly (200) according to one of claims 3 to 5, comprising a workpiece carrier arrangement (100) and a power supply device (201), and • an energy consumer (302), wherein the energy consumer (302) is configured for electrical contact between the energy supply device (201) and the mobile transport device (300) in order to supply the mobile transport device (300) with electrical energy.

11. Mobile transport device (300) according to claim 10, which comprises an internal power supply device for supplying the mobile transport device with electrical energy.

12. Mobile transport device according to one of claims 9 or 10, wherein at least one further workpiece carrier assembly can be arranged on the load-carrying device (303).

13. Component assembly (400), comprising at least one workpiece carrier assembly (200) according to one of claims 3 to 5 and a mobile transport device (300) according to one of claims 10 to 12, wherein the workpiece carrier assembly (200) is arranged on the load-carrying device (303) of the mobile transport device (300), characterized in that the mobile transport device (300) is or can be electrically connected to the energy supply device (201) via the energy collector (302).

14. Component assembly (400) according to claim 13, wherein the mobile transport device (300) comprises an internal energy supply device for supplying the mobile transport device (300) with electrical energy and wherein a capacity of the internal Energy supply device is smaller than a capacity of the energy supply device (201) of the workpiece carrier assembly (200).

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