SUCTION DEVICE WITH CHARGER

Abstract

The invention relates to a suction device (10) for separating particles from a suction stream (20), comprising a suction motor (19) for generating the suction stream (20) and a suction housing (11) in which the suction motor (19) and a dust collection chamber (15) for collecting the particles separated from the suction stream (20) are arranged. The suction device (10) is provided to have a charging device (61) for charging an electrical energy storage module (90) of a hand-held power tool (80), wherein the charging device (61) comprises electrical charging contacts (65) for providing a charging voltage (L) for the electrical energy storage module (90).

Description

[0001] The invention relates to a suction device for separating particles from a suction flow, with a suction motor for generating the suction flow and with a suction housing in which the suction motor and a dust collection chamber for collecting the particles separated from the suction flow are arranged.

[0002] Such a suction device is known, for example, from DE 10 2009 015 642 A1. The suction device sucks in particles via a suction hose, which in turn can be connected to an electric hand-held power tool to extract dust or particles generated by this hand-held power tool during workpiece processing, such as sawing or drilling. Like the suction device, the hand-held power tool can be powered by a battery or an electrical energy storage device, allowing the system to be operated even away from an electrical power supply, such as a 230V mains.

[0003] However, the energy storage units of the suction unit and the handheld power tool must be recharged from time to time, meaning that at least one component of the entire system must be connected to a power supply. This is particularly inconvenient when using an energy storage unit for the handheld power tool.

[0004] It is therefore the object of the present invention to provide an improvement with regard to the charging of an electrical energy storage device, in particular an energy storage module for a hand-held power tool.

[0005] To achieve the object, a suction device of the type mentioned at the outset is provided with a charging device for charging an electrical energy storage module of a hand-held power tool, wherein the charging device comprises electrical charging contacts for providing a charging voltage for the electrical energy storage module.

[0006] A fundamental concept of the present invention is that the charging device is virtually on board the vacuum cleaner, so that, for example, the already discharged energy storage module can be charged on the vacuum cleaner while the handheld power tool is operated with a different energy storage module. A separate charger for the handheld power tool or its energy storage module is not necessary. There is no risk of a charger being forgotten, for example. When the vacuum cleaner according to the invention is used, a charging device is available at the same time, for example, on a construction site.

[0007] Of course, the term "energy storage module" should be understood to mean that the electrical energy storage device can also be an integral part of the handheld power tool. To charge the energy storage device, the entire handheld power tool must then be connected to the suction device or charging unit. However, a detachable configuration is preferred, in which the energy storage module can be removed from a housing of the handheld power tool, allowing a discharged energy storage module to be replaced with a freshly charged one in a conventional manner.

[0008] The vacuum cleaner according to the invention is expediently a mobile vacuum cleaner. The vacuum cleaner preferably has casters for moving over a surface. Of course, the vacuum cleaner could also be a portable vacuum cleaner, with or without casters. The vacuum cleaner according to the invention is expediently not designed as a self-contained, robot-like vacuum cleaner. The vacuum cleaner can be taken along by the operator and used on-site. Furthermore, a suction hose can expediently be connected to the vacuum cleaner.

[0009] The charging contacts can be connected to the vacuum cleaner's electrical system, for example, with a flexible cable or other electrical conductor. The cable or conductor is preferably part of the vacuum cleaner or connected to it. For example, it would be conceivable to place the energy storage module for charging on the top of the vacuum cleaner housing and connect it to the electrical charging contacts.

[0010] However, a particularly preferred embodiment provides that the charging device comprises a holder for holding the electrical energy storage module during the charging process.

[0011] The holder advantageously has form-fitting contours that correspond to those of the hand-held machine tool in order to hold the electrical energy storage module.

[0012] The holder comprises, for example, one or more plug-in receptacles and / or plug-in projections or more plug-in projections in order to establish a plug-in connection with the energy storage module.

[0013] The holder also preferably has locking means for locking the energy storage module, e.g. at least one locking receptacle and / or at least one locking projection.

[0014] The holder is conveniently located on a control panel of the vacuum cleaner housing intended for operating the vacuum cleaner. This makes the holder available, for example, wherever the vacuum cleaner is normally operated. It goes without saying that the holder can also be located at another location on the vacuum cleaner housing, such as an upper cover panel, a side panel, or the like.

[0015] For example, an embodiment is possible in which the holder for holding the electrical energy storage module during the charging process is on a recess or receiving trough provided for receiving a power cable or is arranged on this recess or receiving trough.

[0016] In one embodiment of the invention, the charging device can form an integral part of the vacuum cleaner, with the electrical charging contacts located on the vacuum cleaner housing. The holder is then also conveniently located there.

[0017] It is understood that the charging device can also be of modular construction, meaning that it can be designed, for example, as a charging module separate from the vacuum cleaner housing and comprising a charging housing. A module holder for the charging module is arranged on the vacuum cleaner housing. The module holder can be one such as that described, for example, in DE 10 2009 015 642 A1.

[0018] Alternatively, a suction device communication module that can receive wireless control signals and does not form a device for charging an energy storage module for a hand-held power tool, a radio module or the like can be plugged into the module receptacle.

[0019] An embodiment of the invention can expediently provide that the charging device is designed as a charging module and at the same time also forms a suction device communication module which is suitable for switching or controlling the suction motor (a power control of the suction motor is also possible).

[0020] The charging device may comprise an electrical switching device for switching on and off and / or for adjusting an electrical power of the suction motor or may be designed to control such a switching device of the suction device.

[0021] This switching device can, for example, measure a current flow used to power an external device, such as a handheld power tool. However, it is also possible for the switching device to comprise, for example, an electrical switch with which the suction motor can be switched on or off, or with which the electrical power of the suction motor can be adjusted.

[0022] A wireless communication concept is preferred for the charging device, for example, the switching device. This means that the charging device has a vacuum cleaner communication device, e.g., a vacuum cleaner receiver, for receiving wireless control signals and / or wireless signaling signals sent by an external communication device. The charging device then forms, for example, a switching device configured to control the vacuum cleaner motor, in particular for switching it on and off, using the wireless control signals. The charging device can display the wirelessly received signaling signals, for example, using display means (optical and / or acoustic display means) that expediently form part of the charging device.A particularly preferred embodiment provides that the charging device controls the electrical charging of the energy storage module to be charged based on the signaling signals, in particular when the signaling signal(s) indicate, for example, a charge state of the externally operated energy storage module currently in use. The external communication device can form a component of a system that includes the charging device according to the invention. Thus, if, for example, the energy storage module currently in use is discharged relatively quickly, the external communication devices transmit this based on the signaling signal to the charging device, which in turn then controls, for example, the charging process of the energy storage module currently being charged depending on the signaling signal, for example accelerating or slowing down the electrical charging, the latter protecting, for example, the energy storage module to be charged.

[0023] Wireless means that no electrical or optical cable is required between the communication devices. Alternatively, one could also say wireless. Wired can also be understood as wired, for example, if an electrical wire connection is present between the communication devices. An optical cable is also possible as a cable. The at least one cable between the communication devices can be arranged on or in a suction hose between the hand-held power tool and the suction device.

[0024] As mentioned, the charging device in this embodiment can be configured as a vacuum cleaner communication module and charging module that is removable from the vacuum cleaner or its vacuum cleaner housing. However, it is also possible for the charging device in this embodiment to form an integral component of the vacuum cleaner.

[0025] The wirelessly transmitted or transmittable control signals and / or notification signals are, for example, radio signals or optical signals, or both. For example, the communication means of the vacuum cleaner communication device and the external communication device can comprise optical communication means or radio communication means. The communication interface of the vacuum cleaner communication device and / or the external communication device can comprise a WLAN, for example. Infrared signals are possible, for example. However, a line of sight is not necessary if the wireless notification signals and / or control signals are or comprise radio signals. It is preferred if the radio signals can only be received within a close range of, for example, a maximum of 2-8 m from the vacuum cleaner, so that there is no risk of interference from other external communication devices.As a rule, such a close range is sufficient, since the vacuum cleaner is also needed at the location of the external communication device, where dust particles accumulate.

[0026] An advantageous embodiment of the invention provides that the charging module or the suction device suitable for charging the energy storage module can communicate wirelessly with the energy storage module, for example, to transmit control commands and / or messages from the suction device to the energy storage module and thus to the handheld power tool, or vice versa, from the handheld power tool to the suction device. Thus, it is possible, for example, for the energy storage module to receive a control command from the suction device to switch the handheld power tool on or off. It is also possible to send identification data of the suction device to the handheld power tool, or the like, or to send identification data of the handheld power tool to the suction device.

[0027] It is possible for a handheld power tool equipped with such an energy storage module with an external communication device to wirelessly switch the vacuum cleaner on or off, for example. This makes it possible to retrofit a conventional handheld power tool, for example, with such an energy storage module for wireless communication with the vacuum cleaner. A conventional vacuum cleaner can also be retrofitted with the charging module, which can then wirelessly communicate with the energy storage module and thus with the handheld power tool.

[0028] The energy storage module can, for example, detect a current flow when the handheld power tool is switched on or off, thus detecting the operation of the handheld power tool and wirelessly transmitting to the charging module or the vacuum cleaner that the handheld power tool is running or off. Depending on the operation of the handheld power tool and the information received from the energy storage module, the charging module switches the vacuum cleaner on or off, changes its power, or similar functions.

[0029] In a preferred embodiment of the invention, the charging device can switch a charging current for charging the energy storage module depending on the wireless control signals. For example, it is possible for the charging device to switch the charging current on when the vacuum motor receives an on signal and off when the vacuum motor receives an off signal. If, for example, the vacuum cleaner has a current sensor that measures a current flow to the charging device, the vacuum cleaner detects whether or not a current flow is present based on the current sensor's signals. The current flow essentially simulates a handheld power tool, which is connected, for example, to an otherwise existing socket on the vacuum cleaner.

[0030] If the charging device forms a charging module that can be plugged into a module receptacle of the suction device, proprietary module contacts are preferably provided on the charging module and the module receptacle, i.e. not protective contacts of the usual type that are common in mains plugs, but contacts that are only present in the suction device according to the invention and the charging module according to the invention, so that incorrect use is impossible.

[0031] The charging voltage (L) is preferably a direct voltage and / or is conveniently in a range of 5-25 V

[0032] The charging device expediently has current adjustment means and / or voltage adjustment means for providing the charging voltage based on an input voltage which is provided, for example, by another electrical component of the vacuum cleaner, for example via a power cable from a 230 V network, or also power electronic components which already provide a lower input voltage for the charging device and / or a DC voltage.

[0033] The current and / or voltage adjustment means ensure, for example, that the charging voltage is a direct current. The charging voltage is preferably in the range of 5-25 volts, corresponding to a typical charging voltage for an electrical energy storage device for handheld power tools. It is also possible for the charging voltage to be, for example, 12 V, 15 V, or 18 V.

[0034] It is advantageous if the charging device monitors the charging current and / or the state of charge of the energy storage module using monitoring means so that the energy storage module is charged sufficiently, but not too much.

[0035] The suction device preferably has an internal electrical energy storage device. This can, for example, be an accumulator, i.e., a rechargeable energy storage device.

[0036] However, it is also possible for the vacuum cleaner to have, for example, a fuel cell, solar modules or similar other electrical energy generating means for providing electrical energy for the charging device.

[0037] The charging device is expediently designed to be generously sized, with the internal electrical energy storage device providing electrical energy to charge the energy storage module or the handheld power tool. Thus, the large-capacity internal electrical energy storage device, for example, can be used to charge the relatively small energy storage device of the energy storage module. While the vacuum cleaner is usually placed on a surface, so its weight is not a significant factor, the energy storage module is preferably lightweight and compact, yet can utilize the internal capacities of the vacuum cleaner.

[0038] The vacuum cleaner preferably has a control device for controlling the electrical charging of the internal electrical energy storage device and the energy storage module. For example, the control device preferably charges the internal electrical energy storage device, observing electrical power limits. This prevents, for example, the need to provide excessive mains current to power the vacuum cleaner.

[0039] The aforementioned control device or another control device is expediently designed to control the electrical charging of the energy storage module depending on the operation of the naturally aspirated motor. For example, if the naturally aspirated motor requires increased power or requires any power at all, the control device can reduce the charging current for charging the energy storage module. However, if the naturally aspirated motor is not operating or is operating at a lower power consumption, the charging process continues at optimal power, so that the energy storage module is charged quickly.

[0040] The suction device according to the invention is advantageously not designed as a self-contained, robot-like suction device. The suction device can be taken along by the operator and used on-site. Rollers for rolling over a surface are advantageously provided on the suction device housing. Furthermore, a suction hose can advantageously be connected to the suction device. The suction device advantageously has a suction hose. Rollers for manual movement over a surface are advantageously arranged on the suction device housing.

[0041] Exemplary embodiments of the invention are explained below with reference to the drawings. They show: Figure 1 shows a perspective view of a system comprising a suction device and a hand-held power tool provided with an electrical energy storage module in the form of a saw, in particular a jigsaw, Figure 2 shows a perspective oblique view of an upper part of a suction housing of the suction device according to Figure 1 , which has a charging device, Figure 3 the suction housing according to Figure 2 , but without charging device, so that a module holder is visible, approximately corresponding to a section A in Figure 2 , Figure 4the charging device according to Figure 2 , but away from the suction device, Figure 5Module contacts of the charging device according to Figure 4 , roughly corresponding to section B in Figure 4 , Figure 6 a view approximately corresponding to the view according to Figure 2, but with an energy storage module arranged on the charging device, which is shown diagonally from above in Figure 7 and is mounted on a hand-held machine tool in the form of a screwing device or drilling device in Figure 8, Figure 9 is an electrical circuit diagram of a cable-free control of the suction device according to Figure 1 and Figure 10 an electrical circuit diagram to illustrate a charging concept for charging an electrical energy storage module using the suction device according to Figure 1, which according to Figure 2 has a charging device.

[0042] A suction device 10 has a suction housing 11. The suction housing 11 comprises a lower part 12 and an upper part 13, which is detachably connectable to the lower part 12. Rollers 14 are arranged on the suction housing 11, of which the Figure 1The front rollers 14 are swivel casters. A dust collection chamber 15, for example, a receiving tray, is provided in the vacuum cleaner housing 11. A filter bag, for example, can be arranged in the dust collection chamber 15, although the vacuum cleaner 10 can also be used without a filter bag. The dust collection chamber 15 is provided in the lower part 12. A suction inlet 17, to which a suction hose 18 can be connected, is provided on a front wall 16 of the vacuum cleaner housing 11. The suction inlet 17 opens into the dust collection chamber 15.

[0043] The electrical components of the suction device 10 are protected within the suction housing 11. The electrical components are preferably arranged in the upper part 13, for example, a suction motor 19, with which a suction flow 20 can be generated. The suction motor 19 comprises, for example, a fan arrangement (not explained in detail) for generating the suction flow 20.

[0044] The suction device 10 can be operated in a conventional manner, for example, via control elements 21 arranged on a control panel 22 provided above the front wall 16. This panel contains, for example, a main switch 23 for switching the suction motor 19 on or off, or a control switch 24 for adjusting the suction power of the suction device 10. A socket 25 is also provided, into which a power cable of an electrical device, for example, a hand-held power tool (not shown), can be plugged.

[0045] The suction device 10 can be supplied with electrical energy via a schematically illustrated internal energy storage device 26, for example, a fuel cell or an electric accumulator, and / or connected to an electrical power supply network N, for example, 110 V to 230 V AC, for which a connecting cable 27 is provided. The connecting cable 27 and the suction hose 18 can be inserted into a receptacle 28 on a top side 29 of the suction device housing 11 when not in use.

[0046] The suction hose 18 has a housing end 30, which is designed as a plug-in end and can be plugged into or into the suction inlet 17 in a manner known per se. Its other end forms a suction end 31 and has a suction opening 32, to which, for example, a rigid suction pipe, a brush or the like can be connected or, as in Figure 1is shown, for example, a hand-held power tool 80. The hand-held power tool 80 is, for example, a jigsaw, although other saws, e.g. a circular saw, or milling machines or the like, are also possible.

[0047] The hand-held power tool 80 is indeed an electric machine, i.e., it has an electric drive motor 81, but with regard to the wireless control concept and / or signaling concept explained later, other drive concepts of a hand-held power tool, for example, with a pneumatic motor in connection, in particular, with a polishing tool or grinding tool, are also readily possible.

[0048] The drive motor 81 drives a tool 82, for example a saw blade, with which a workpiece W can be machined. For example, the hand-held power tool 80 is used to cut a saw cut S into the workpiece W. This creates dust, which is sucked away by the suction device 10.

[0049] The drive motor 81 is arranged in a machine housing 83 of the handheld power tool 80. Located at a rear portion of the machine housing 83 is a bracket 84, concealed in the drawing by an energy storage module 90, for holding the energy storage module 90. The bracket 84 also contains electrical contacts 85 (schematically indicated) for electrically connecting the energy storage module 90 to the electrical components inside the machine housing 83. In any case, the energy storage module 90 supplies the handheld power tool 80 with electrical energy, so that it can be operated freely without a connection to an electrical power supply network, for example, the power supply network N.

[0050] The handheld power tool 80 has a dust extraction connection 86, for example, a connecting piece that can be connected to the suction end 31 of the suction hose 18. Thus, the suction device 10 can directly extract the dust generated during operation of the handheld power tool 80.

[0051] The operation and use of the hand-held power tool 80 is facilitated in several ways in conjunction with the suction device 10. Firstly, the suction device 10 can be switched on without a cable connection using a wireless operating concept, so that, for example, the suction motor 19 runs or stops depending on whether the hand-held power tool 80 is in use or not. Secondly, the suction device 10 enables convenient charging of the energy storage module 90.

[0052] First, wireless operation will be explained: For example, an external communication device 50 is arranged at the suction end 31 of the suction hose 18, with which wireless control signals 51 for controlling the suction device 10, in particular for switching the suction motor 19 on and off, can be generated. The external communication device 50 is attached to the suction hose 18, for example, by means of a Velcro strip or other fastening means 52. It would also be possible for the suction hose 18 to have a pocket or other receptacle in which the external communication device 50 is arranged. It is also possible for the external communication device 50 to be overmolded with the material of the suction hose 18, for example, plastic.

[0053] The external communication device 50 includes, for example, a motion sensor 53 that responds to movements of the suction hose 18. Thus, when the suction hose 18 is moved in the region of its suction end 31, for example, vibrates during operation of the hand-held power tool 80, the motion sensor 53 generates a sensor signal 54. Based on the sensor signal 54, an external transmitter 55s generates the control signal 51, in this case a radio signal, which the external communication device 50 transmits via an antenna 56.

[0054] The external communication device 50 expediently has a local energy storage device 57, for example, a battery and / or a storage capacitor, and / or a generator 58 for generating electrical energy. The generator 58 can, for example, be a generator that can be wirelessly charged by means of a charging device 33, in particular an inductive one, which is arranged on or in the vacuum cleaner housing 11, as indicated by an arrow PL. Furthermore, the generator 58 can also be actuated, for example, by movements. In any case, it is preferred if no line connection is necessary between the vacuum cleaner housing 11 and the external communication device 50, although, for example, a line connection to the electrical power supply is also possible in principle.For example, alternatively or in addition to the charging device 33, electrical charging contacts 133 can be provided for charging an external communication device according to the invention. The charging device 33 and the charging contacts 133 form charging means 233. For example, a schematically illustrated charging bay or charging receptacle 355 with the charging contacts 133 and / or the charging device 33 is provided on the top side 29 of the vacuum cleaner housing 11.

[0055] The vacuum cleaner 10 has an electrical vacuum cleaner communication device 40 with a vacuum cleaner receiver 41r for receiving the control signals 51 sent by the external communication device 50. The vacuum cleaner communication device 40 comprises, for example, a vacuum cleaner communication module 42, which is accommodated in a module receptacle 34 on the vacuum cleaner housing 11.

[0056] The vacuum cleaner receiver 41r receives the control signals 51, for example, via an antenna 46. The antenna 46 can, for example, protrude in front of a housing of the vacuum cleaner communication module 42, be integrated into it, or the like.

[0057] The module receptacle 34 has, for example, a plug-in receptacle 35 into which a plug-in projection 43, described in more detail in connection with a charging module 60, can be inserted.

[0058] For example, electrical module contacts 44 are provided on the plug-in projection 43, which can come into electrical connection with module contacts 36 of the module receptacle 34. The module contacts 44 are provided, for example, on a contact carrier 45, preferably designed in the form of a plug-in projection, which is intended for insertion into a plug-in receptacle 39 of the module receptacle 34. The module contacts 36, 44 are expediently proprietary contacts, i.e., not protective contacts such as those found on the plug arranged on the connecting cable 27, for example. The module contacts 36, 44 are used for transmitting electrical energy and / or for transmitting control signals and / or alarm signals.

[0059] The module holder 34, for example, has a substantially rectangular cross-sectional contour and is designed as a recess.

[0060] The vacuum cleaner communication module 42 sends switching signals 47, for example, via its module contacts 44 to a control device 37, which in turn controls the vacuum motor 19, e.g., via suitable power switches, semiconductors, or the like. Thus, when the vacuum cleaner receiver 41r receives a control signal 51 from the external communication device 50 that serves to switch on the vacuum motor 19, the vacuum cleaner communication module 42 controls the control device 37 accordingly, which in turn switches the vacuum motor 19 on, off, or adjusts its power, for example, reducing or increasing its speed, which is indicated by an arrow 48.

[0061] It is understood that such adjusting means, switches or the like can also be directly on board the suction device communication module 42, so that the interposition of the control device 37 is not necessary.

[0062] Furthermore, a variant of the invention can provide that the control device of a vacuum cleaner integrates a wireless interface, so that a separate vacuum cleaner communication module, such as the vacuum cleaner communication module 42, is not necessary. For example, the vacuum cleaner receiver 41r could form a component of the control device 37.

[0063] It is understood that the above-mentioned modular concept is advantageous, but it is also possible for the vacuum cleaner communication device 40 to form, for example, an integral part of the vacuum cleaner 10. The vacuum cleaner communication device 40 can, for example, form a component of the control device 37.

[0064] Instead of or in addition to the module contacts 36, 44, a wireless interface (radio interface or optical interface) could also be provided between the vacuum cleaner communication device 40 and the control device 37. In any case, a potential-free coupling between the vacuum cleaner communication device 40 and the other electrical components of the vacuum cleaner 10 is preferred, which can also be achieved, for example, using optocouplers.

[0065] Another concept provides that, for example, an external communication device 150 is arranged on board the hand-held power tool 80 or an external communication device 250 is arranged on board the energy storage module 90, which can communicate wirelessly with the suction device communication device 40.

[0066] The external communication devices 150 and 250 can be integral components of the energy storage module 90 or the handheld power tool 80, respectively. However, a modular concept is also possible, meaning that, for example, a module receptacle is provided on the handheld power tool 80 and / or the energy storage module 90, in which the external communication devices 150 or 250, configured in a correspondingly modular manner, for example as plug-in parts, can be arranged. Furthermore, the external communication devices 150 and / or 250 can also be subsequently arranged on the energy storage module 90 or the handheld power tool 80 using fastening means, for example adhesives, snap-in connecting means, or the like. This makes retrofitting possible.

[0067] The external communication device 150 comprises, for example, a speed sensor 153 that detects the respective speed of the drive motor 81. Thus, when the drive motor 81 and thus the handheld power tool 80 are operated, the speed sensor 153 controls an external transmitter 155s, which comprises, for example, a Bluetooth transmitter, to transmit control signals 151 via an antenna 156, which is, for example, integrated into the machine housing 83. The suction device communication device 40 then switches on the suction motor 19 or sends a switch-on signal to the control device 37. If the speed of the drive motor 81 increases, i.e., the tool 82 generates even more dust during processing of the workpiece W, the external communication device 150 can control the suction device communication device 40 to increase the speed of the suction motor 19.When the hand-held power tool 80 is switched off, the external communication device 150 controls the switching off of the suction motor 19.

[0068] Instead of or in addition to the speed sensor 153, a magnetic sensor, a Hall sensor, or the like could also be provided. Of course, a current sensor can also be provided on board the handheld power tool 80. This current sensor detects the current flow to the drive motor 81 or a work area illumination (not shown) of the handheld power tool 80, which illuminates during operation. The external communication device 150 accordingly generates a control signal 151 for controlling the suction device communication device 40. Instead of or in addition to the current sensor, a voltage sensor can also be provided, which measures a supply voltage applied to the drive motor 81 or the work area illumination.

[0069] A schematically indicated embodiment provides that a switch 87, which serves to switch the drive motor 81 of the hand-held power tool 80 on and off, for example, has arranged thereon a position sensor and / or a magnetic sensor and / or an electrical switching contact or similar other sensor 153' which detects the position of the switch 87 or can be actuated depending on its position, so that the external communication device 150 generates the control signals 51 depending on a position of the switch 87 and thus switches the suction motor 19 on and / or off and / or adjusts its power with the aid of the suction device communication device 40.

[0070] In this context, a redundant detection concept should also be mentioned. This means that an external communication device according to the invention can, of course, also comprise multiple sensors, switching contacts, and the like, so that it generates the control signal depending on at least two sensor signals or signals from switching contacts. For example, the external communication device 150 evaluates the sensor signals from sensors 153 and 153' and only sends the control signal 51 to switch on the suction motor 19 if both sensors 153 and 153' report that the drive motor 81 of the hand-held power tool 80 is running.

[0071] It is advantageous if the suction device 10 continues to run for a fixed or preferably parameterizable run-on time, ie, the suction motor 19 is only switched off after a certain time, when the hand-held power tool 80 has already been switched off. Thus, dust still in the suction hose 18 or in the area around the tool 82 can be vacuumed away, even if the hand-held power tool 80 has already been switched off.

[0072] Even immediately switching on the suction motor 19 when the control signal 51 indicates switching on is not always advantageous. For example, there may have been an operating error or the handheld power tool may not yet be engaged with the workpiece W. Accordingly, it may be advantageous if a switch-on delay time is also fixed or parameterizable in the suction device communication device 40, so that it only switches on the suction motor 19 after the switch-on delay time has elapsed, if it has been triggered by the control signal 51 to switch on the suction motor 19.

[0073] The external communication device 250 forms a component of the energy storage module 90 and includes a current sensor 253, which detects a current flow from the energy storage module 90 to the handheld power tool 80, in particular its drive motor 81. When the current sensor 253 detects a current flow, an external transmitter 255s generates a corresponding control signal 251 to control the suction device communication device 40, causing it to switch on the suction motor 19. When the handheld power tool 80 is switched off, the external communication device 250 sends a corresponding switch-off control signal 251, whereupon the suction device communication device 40 switches off the suction motor 19.

[0074] The external communication device 250 is arranged in an energy storage housing of the energy storage module 90. Of course, it would also be possible to provide an intermediate module 100, so to speak, connected between the connection contacts 92 of the energy storage module 90 and the contacts 85 of the handheld power tool 80 in order to detect the current flow from the energy storage module 90 to the handheld power tool 80 or the drive motor 81 and generate a corresponding control signal 251. The intermediate module 100 is indicated.

[0075] A preferred embodiment provides that a vacuum cleaner communication device and an external communication device, which communicate wirelessly with one another, become acquainted with one another as part of a learning process, e.g., a so-called teach function. This can prevent, for example, misuse or incorrect operation. For example, as part of a start-up procedure, the external communication device 50 first sends a communication identifier 59 to the vacuum cleaner receiver 41r, which in turn checks, for example, using a comparison list, whether the communication identifier 59 authorizes the external communication device 50 to send the control signals 51. Thus, if, for example, several tradespeople are working on a construction site and use their hand tools according to the invention to switch vacuum cleaners on and off wirelessly, malfunctions can be prevented.

[0076] It is also possible that the suction device communication device 40 is ready to receive the communication identifier 59, for example by pressing an electrical contact of the suction device communication device 40 (not shown in the drawing), thus recognizing the external communication device 50, 150, 250 as an authorized external communication device and subsequently accepting the control signals 51, 151, 251 from it.

[0077] The charging module 60 can also have or form a suction device communication device according to the invention, for example a suction device communication device 140.

[0078] So far, the direction of communication from the external communication device 50, 150, 250 to the suction device communication devices 40, 140 has been described in terms of a control of the suction device 10 by the external communication device 50, 150, 250.

[0079] Messages can of course also be sent in the communication direction from the handheld power tool to the suction device, so that, for example, an operating status of the handheld power tool 80 can be displayed on board the suction device 10. For example, the external communication device 150 can transmit a malfunction of the handheld power tool 80 as a message signal 101 to the suction device communication device 40 via an external transmitter 155s, which in turn then receives the message signal 101 via a suction device receiver 41r and, for example, controls an optical display 102, for example an LED, to display the message signal 101.

[0080] Wireless communication is also expedient between the external communication device 250, which is located, for example, on board the energy storage module 90, and the charging module 60, which includes the suction device communication device 140. For example, the external communication device 250 can use an external transmitter 255s to report the charge level of the energy storage module 90 to the charging module 60, i.e., the charging device 61, using a signal 201. The suction device communication device 140 receives the signal via a suction device receiver 141r. For example, a visual and / or acoustic display 103 can be provided on board the charging device 61, which indicates the charge level of the external energy storage module 90 operated on the handheld power tool 80.

[0081] Furthermore, it is possible, for example, for the charging device 61 to control the charging of the energy storage module 90 currently being charged depending on the notification signal 201, for example, to accelerate the electrical charging of this energy storage module 90 to be charged if the energy storage module 90 operated on the handheld power tool 80 is rapidly losing charge and therefore needs to be replaced soon. The external communication device 250 comprises, for example, a measuring device 257 for detecting the charge state of the energy storage module 90 and for generating the notification signal 201 indicating the charge state.

[0082] Of course, the aforementioned wireless concept can also be applied in the opposite direction, i.e. the suction device communication devices 40, 140 send messages or signals to the external communication devices 50, 150, 250.

[0083] On board the suction device communication devices 40 and / or the suction device communication devices 140, for example, suction device transmitters 41s and 141s are provided, which are designed to send control signals and / or message signals to the external communication devices 50, 150, 250.

[0084] If, for example, the control device 37 of the vacuum cleaner 10 signals the vacuum cleaner communication device 40 by means of an internal signal 147 that the dust collection chamber 15 is almost full, i.e., can no longer accommodate any more particles, the vacuum cleaner transmitter 41s can send a notification signal 105 to the external communication device 50, which outputs the content of the notification signal 105 on optical or acoustic output means 106, which may include, for example, an LED. Based on this signal output, which occurs directly on-site at the handheld power tool 80, the operator can recognize that, for example, the collection container of the vacuum cleaner 10 needs to be emptied.

[0085] The control device 37 can thus generate a notification signal 105 or a message using the vacuum device communication device 40, which the latter sends via the vacuum device transmitter 41s to one or more of the external communication devices 50, 150, or 250. The notification signal 105, which, as indicated, can also be a more complex message containing multiple pieces of information or can also comprise several separate messages, contains, for example, information about the size of the suction flow 20 and / or a suction power of the suction motor 19 and / or information about a fill level of the dust collection chamber 15.

[0086] The external communication devices 50, 150, or 250 can output one or more pieces of information from the notification signal 105, for example, to output means 106, which may include, for example, a light indicator, such as LEDs, and / or a display and / or a loudspeaker or other acoustic output means. Thus, if, for example, the notification signal 105 signals that the dust collection chamber 15 and / or a filter arranged therein (not shown in the drawing) will soon be completely full and dirty, a light indicator 107 of the external communication device 50, configured as a warning LED, can indicate this.

[0087] The external communication device 150 or 250 arranged on board the energy storage module 90 or the intermediate module 100 or the handheld power tool 80 can also comprise, for example, a haptic display, a vibration display, or the like to output the notification signal 105. For example, an optical and / or acoustic display 104 and / or a vibration element 109 can be provided as an output means on board the handheld power tool 80. This vibrates when a critical fill level in the dust collection chamber 15 and / or when the suction power of the suction device 10 is lower, which is signaled as part of the notification signal 105, thus indicating to the operator that they should attend to the suction device 10 so that the desired suction power is available.

[0088] An even more advanced function is achieved when the suction device 10 and / or the suction device communication devices 40 or 140 directly influence the function of the handheld power tool 80 using a control signal 108. For example, in the event of a failure of the suction device 10 or a correspondingly critical, reduced suction power of the suction device 10, the control device 37 can send information 147 to the suction device communication devices 40 or 140, which then generates the corresponding control signal 108 and sends it to the external communication devices 50, 150, 250. The external communication devices 150 or 250 can then directly influence the operation of the handheld power tool 80. If, for example, the suction power of the suction device 10 is not available or only available to a reduced extent, the control signal 108 can instruct the power of the drive motor 81 to be reduced or even to be switched off completely.This can, for example, prevent the user from suffering health damage due to swirling particles if the suction device 10 can no longer adequately suck up the particles generated by the hand-held power tool 80.

[0089] The external communication device 250 located on board the energy storage module 90 can, for example, switch the current flow to the hand-held power tool 80 on and off by means of a switching device 258, e.g. after being controlled by the control signal 108.

[0090] Furthermore, the external communication device 250 can have, for example, a wired or preferably wireless interface 259, e.g., a radio interface, for communication with the handheld power tool 80, in particular its controller 88, e.g., to forward the control signal 108 and / or communicate the operating parameters 450, 400 and / or the identification codes 410, 460. A wired interface 259 can, for example, provide for data to be digitally transmitted and / or modulated via the supply lines to the handheld power tool 80.

[0091] The external communication device 150 is directly connected to the control system, for example, an on-board electronics system, of the handheld power tool 80 or forms part of it, so that the control system can directly influence the operation of the drive motor 81, for example, by shutting it down. Of course, it is advantageous if a warning is issued beforehand so that the operator is not surprised by the aforementioned forced shutdown.

[0092] It is advantageous if the suction device communication devices 40, 140 and / or the external communication devices 50, 150, 250, for example, have a microprocessor and / or are suitable for executing software modules with which the functions explained above or explained below can be implemented. For example, the external communication device 50 has a microprocessor 70, which evaluates the sensor signals 54 using a program module 71 and, for example, controls or implements the external transmitter 55s and / or the external receiver 55r. The program module 71, like the communication identifier 59, is expediently stored in a memory 72.

[0093] In one function, the charging module 60 is used to charge the energy storage module 90 or other energy storage modules for hand-held power tools not shown in the drawing, for example the hand-held power tool 80 or a Figure 8The charging module 60 forms a charging device 61 for charging the electrical energy storage module 90.

[0094] The charging module 60 has a holder 63 on its charger housing 62 for holding the energy storage module 90. The holder 63 comprises, for example, a plug-in projection 64 which can be inserted into a plug-in receptacle 93 of the energy storage housing 91 or the energy storage module 90.

[0095] The holder 63 also includes a plug-in receptacle or holding receptacle 68, into which a plug-in projection 94 on an upper side 95 of the energy storage housing 91 can engage. The holder 63 corresponds to the holder 84 of the hand-held power tool 80 or 180, i.e., it is designed for the positive-locking reception of the energy storage housing 91.

[0096] In the area of ​​the plug projection 64, electrical charging contacts 65 are provided for providing a charging voltage L for the electrical energy storage module 90.

[0097] The charging voltage L is, for example, a direct voltage in a range from 5 V to 25 V. In this context, it is advantageous if the charging module 60 has detection means 66 for detecting the respective type of energy storage module 90 and setting the charging voltage L accordingly. Thus, for example, if a 12 V energy storage module is connected, the charging voltage L is set correspondingly lower, whereas for an energy storage module with a nominal voltage of 18 V, a correspondingly higher charging voltage L is plugged in. The detection means 66 comprise, for example, electrical means, optical means, or the like. It is also possible for the detection means 66 to comprise, for example, a bus interface for communicating with a bus coupler on board the energy storage module 90 and thus detecting data from the energy storage module 90, for example its state of charge, nominal voltage, or the like.

[0098] By means of electrical adaptation means 67, which comprise, for example, an electrical transformer and / or a rectifier or the like, the charging device 61 can convert a supply voltage V provided, for example, by the supply network N to the charging voltage L.

[0099] Furthermore, monitoring means 75 are advantageously provided for monitoring the charging voltage L and / or for monitoring a charge state of the energy storage module 90 so that it is optimally charged.

[0100] The monitoring means 75 and / or the detection means 66 and / or the adaptation means 67 comprise, for example, a microprocessor 76 that executes program code of software modules, for example, a software module 78 stored in a memory 77. Implementation of the monitoring means 75 and / or the detection means 66 and / or the adaptation means 67 in hardware is readily possible.

[0101] The charger housing 62 is partially designed similarly to the vacuum cleaner communication module 42, thus also having a plug-in projection 43 on which module contacts 44 are provided for establishing an electrical connection with the module contacts 36 of the module receptacle 34. Thus, the adapter means 67 arranged inside the charger housing 62 can be supplied with electrical energy from the vacuum cleaner 10, e.g., via the connecting cable 27, in order to provide the charging voltage L.

[0102] Additional fixation of the charging module 60 to the vacuum cleaner housing 11 or the module receptacle 34 can be achieved, for example, by screws 69, which can be screwed into corresponding screw openings 38 of the module receptacle 34. Magnetic retention, locking, or the like of the charging module 60 to the vacuum cleaner housing 11 is also readily possible, but is not shown in the drawing. The vacuum cleaner communication module 42 can also expediently have corresponding holding means (screws, magnets, locking means) to ensure secure retention in the module receptacle 34.

[0103] Furthermore, it is expedient, although not shown in the drawing, that the charging module 60 or the charging device 61 forms an integral part of the suction device 10, that is to say that, for example, the charging housing 62 and the suction housing 11 are in one piece.

[0104] Of course, a holder in the type of holder 63 and charging contacts in the type of charging contacts 65 can also be arranged at another location on the vacuum cleaner housing 11, for example at the top in the area of ​​the receptacle 28, where the energy storage module to be charged can be housed in a protected manner, i.e., is less exposed than in the area of ​​the control panel 22.

[0105] The vacuum cleaner communication device 140 formed by the charging module 60 has, for example, a vacuum cleaner receiver 141r. The charging module 60 is supplied with electrical energy, for example, a supply voltage V, via the module contacts 36. A current sensor 49 on board the vacuum cleaner 10, for example as a component of or in conjunction with the control device 37, detects, for example, whether an electrical current is flowing via the module contacts 36.

[0106] When the charging module 60 receives a control signal 51, 151, 251 for switching on the suction motor 19 via its suction device receiver 141r and an antenna 146, for example, integrated into the charger housing 62, it begins the charging process of the energy storage module 90, thus generating the charging voltage L from the supply voltage V, so that a charging current I flows. An input current E required to provide the charging current I is detected by the current sensor 49. The suction device 10 thus detects that an electrical consumer requires power and then switches on the suction motor 19 in a manner known per se.

[0107] If control signal 51, 151, 251 instructs the suction motor 19 to be switched off or its power to be reduced, the suction device communication device 140 or the charging module 60 reduces the current supply to the energy storage module 90 or switches off the charging process, so that no input current E detectable by the current sensor 49 or an input current E below a detection threshold flows on the input side (supply voltage V), and thus, for example, the control device 37 switches off the suction motor 19. Thus, for example, the charging module 60 can virtually simulate a mains-connected electric handheld power tool that is supplied with electrical energy via the suction device 10—which, however, is not actually the case.

[0108] It is also possible for the charging device 61 to be supplied with electrical energy from the energy storage device 26 on board the vacuum cleaner 10. For example, the control device 37 controls the provision of electrical energy to the module contacts 36. Preferably, the control device 37 reduces the power output at the module contacts 36 when the vacuum motor 19 is running and then increases it again. Thus, for example, a power supply unit of the vacuum cleaner 10, which provides the charging voltage L, is subjected to less load.

[0109] The suction device communication devices 40 and / or 140 located on board the suction device 10 or connected thereto and the external communication devices 50, 150, 250 are also suitable for a registration procedure in which the suction device 10 sends at least one operating parameter 400 and / or at least one identification code 410 to the external device, for example the hand-held power tool 80 and / or its energy storage module 90 and / or in the opposite direction, the device to be connected to the suction device 10, for example the hand-held power tool 80 or its energy storage module 90, sends at least one operating parameter 450 and / or at least one identification code 460 to the suction device 10, so that only matching pairs of suction device and hand-held power tool are used and / or the operating parameters of the suction device 10 and the hand-held power tool 80 or 180 are set such thatthat optimal operation of the respective hand-held power tool 80 or 180 on the suction device 10 is possible.

[0110] For example, if the suction power of the suction device 10 is insufficient for operating the handheld power tool, the procedure described in detail below can be used to prevent the suction device 10 from being used in conjunction with the handheld power tool 80. However, if the suction power is sufficient for, for example, the handheld power tool 180, the suction device 10 and the handheld power tool 180 can be used together.

[0111] Furthermore, it is advantageously possible for the suction device 10 and the respective connected hand-held power tool 80 or 180 to coordinate their respective performances with one device registering with the other device and / or vice versa.

[0112] At this point, it should be noted that while wireless communication between the handheld power tool 80 and 180 on the one hand and the suction device 10, in particular their suction device communication devices 40, 140, is expedient, this does not preclude wired communication, at least in one direction (from the suction device to the handheld power tool or vice versa), from being within the scope of the invention, particularly for the registration procedure or identification procedure described below, but also for the transmission of notification signals and / or control signals. In other words, communication can be conducted in one direction, for example, wired from the suction device to the handheld power tool, while wireless communication can be conducted in the opposite direction, or even vice versa.

[0113] For example, at least one communication line 300, for example an electrical line and / or an optical conductor, runs in the suction hose 18 for this purpose, to which, for example, the suction device communication devices 40 and / or the control device 37 or another component on board the suction device 10 are connected in order to communicate with the hand-held power tool 80 or 180. On the hand-held power tool 80 or 180 side, for example, the external communication device 150 or 250 can be connected to the at least one communication line 300.

[0114] For example, the external communication device 150 or 250 sends the identification code 460 identifying the hand-held power tool 80 to the suction device 10.

[0115] The suction device communication device 40 receives the identification code 460 and forwards it, for example, to the control device 37, which, based on the identification code 460, recognizes, for example, the type of hand-held power tool 80, for example, which particle quantity is to be expected from this hand-held power tool 80, which suction power is to be provided accordingly by the suction device 10, or the like.

[0116] The control device 37 accordingly adjusts the function of the suction device 10, for example in such a way that the suction power of the suction motor 19 can be adjusted at the setting switch 24, but not below a limit value that enables reliable suction of the particles generated by the hand-held power tool 80.

[0117] It is also possible for the control device 37 to check whether operation of the hand-held power tool 80 with the suction device 10 is even possible if at least one criterion is met. If, for example, it should be noted that the suction device 10 is intended to provide explosion protection in conjunction with the respective hand-held power tool and / or at least a predetermined suction power of the suction device 10 is required for the at least one criterion to be met, the control device 37 can determine whether the identification code 460 is specified in a table 430 containing a plurality of identification codes. If this is the case, the control device 37 enables the suction device 10 for operation with the hand-held power tool 80.

[0118] Depending on the tool 82 used on the handheld power tool 80, the type of particles may also vary, for example, including larger chips or smaller chips. Accordingly, it is expedient for the handheld power tool 80 to send information about the tool 82 used to the suction device communication devices 40 or 140, for example as an operating parameter 450. Depending on the nature of the particles, which the operating parameter 450 then represents, the control device 37 can, for example, set cleaning intervals for a cleaning device 9 that cleans a filter 8 located upstream of the suction motor 19.

[0119] It is also advantageous for the handheld power tool 80 if the suction device 10 registers itself, so to speak, before the start of operation. For example, the suction device communication device 40 sends an identification code 410 of the suction device 10 and / or at least one operating parameter 400 to the handheld power tool 80.

[0120] A controller 88 on board the handheld power tool 80 checks, for example, using a check table, whether the identification code 410 classifies the suction device 10 in such a way that it can be used in conjunction with the handheld power tool 80. Only then does the controller 88 enable the drive motor 81. Otherwise, the controller 88 blocks the drive motor 81, so that, for example, health impairments to a user of the handheld power tool 80 due to particles not being extracted can be avoided.

[0121] Based on operating parameter 400, the suction device 10 can, for example, inform the handheld power tool 80 about the available suction power. The handheld power tool 80 then reduces, for example, the maximum speed of the drive motor 81, so that even at the highest speed of the drive motor 81, which can be set via switch 87, the suction power of the suction device 10 is sufficient to reliably remove all particles, or at least substantially all particles, from the working area of ​​the handheld power tool 80.

[0122] Furthermore, the external communication devices 150 or 250 and / or the suction device communication devices 40 or 140 can directly generate control signals and / or message signals based on the respectively received identification code 410, 460 and / or the received operating parameters 400, 450 and send them to the respective other communication devices.

[0123] If, for example, the identification code 410 assigns the suction device 10 to a specific power class, the external communication devices 150 and / or 250 can, for example, determine based on the identification code 410 that the suction device 10 must deliver a specific power and accordingly send a control signal 351 that instructs the suction device 10 to set a specific power level as a minimum power level that can be set on the control switch 24. Of course, instead of the control signal 351, a message signal 352 can also be generated, which is displayed, for example, by the display 102.

[0124] The suction device 10 or the suction device communication devices 40, 140 can also be configured in this way. For example, the suction device communication devices 40, 140 and / or the suction device 10, for example the control device 37, use the identification code 460 or the operating parameter 450 to determine which speeds of the drive motor 81 of the hand-held power tool 80 are to be set or can be set, and accordingly send a control signal 353 and / or a message signal 354 to the external communication devices 150 or 250. The control signal 353 instructs them, for example, to inform the control device 88 which power levels of the drive motor 81 should be set using the switch 87.The information of the message signal 354 is displayed, for example, on the display 104, so that the operator knows which power ranges should preferably be set on the hand-held power tool 80 and / or which tools can be used or the like.

Claims

1. Suction device (10) for separating particles from a suction flow (20), with a suction motor (19) for generating the suction flow (20) and with a suction housing (11) in which the suction motor (19) and a dust collection chamber (15) for collecting the particles separated from the suction flow (20) are arranged, characterized in that it has a charging device (61) for charging an electrical energy storage module (90) of a hand-held power tool (80), wherein the charging device (61) comprises electrical charging contacts (65) for providing a charging voltage (L) for the electrical energy storage module (90).

2. Suction device according to claim 1, characterized in that the charging device (61) comprises a holder (63) for holding the electrical energy storage module (90) during the charging process.

3. Suction device according to claim 2, characterized in thatthe holder (63) has at least one plug-in receptacle and / or at least one plug-in projection for establishing a positive plug-in connection with the energy storage module (90) and / or that the holder (63) is arranged on an operating wall (22) of the vacuum cleaner housing (11) provided for operating the vacuum cleaner (10).

4. Suction device according to one of the preceding claims, characterized in that the charging device (61) comprises or forms an electrical suction device communication device (40; 140), in particular for switching on and off and / or for adjusting an electrical power of the suction motor (19).

5. Suction device according to claim 4, characterized in thatthe charging device (61) has a suction device communication device or a suction device receiver (41r, 141r) for receiving at least one wireless control signal (51; 151, 251) and / or notification signal (101) sent by an external communication device (50; 150; 250), wherein the charging device (61) is designed to control the suction motor (19), in particular to switch it on and off, based on the at least one wireless control signal (51; 151, 251) and / or to control the charging process of the electrical energy storage module (90) based on the notification signal (101) or to output the notification signal (101).

6. Suction device according to claim 5, characterized in thatthe charging device (61) switches a charging current (I) for charging the energy storage module (90) in dependence on the at least one wireless control signal (51; 151, 251), in particular switches the charging current (I) on when there is a switch-on signal for the suction motor (19) and switches it off when there is a switch-off signal for the suction motor (19).

7. Suction device according to one of the preceding claims, characterized in that it has an internal, in particular rechargeable, electrical energy storage device (26) and / or energy generating means for providing electrical energy for the charging device (61).

8. Suction device according to claim 9, characterized in that the charging device (61) can be supplied with electrical energy for charging the energy storage module (90) via the internal electrical energy storage device (26) and / or the energy generation means.

9. Suction device according to claim 9 or 10, characterized in thatit has a control device (37), in particular forming part of the charging device (61), for controlling an electrical charging of the internal electrical energy store (26) and the energy storage module (90) in such a way that the internal electrical energy store (26) is preferably charged while observing electrical power limits.

10. Suction device according to one of the preceding claims, characterized in that it has a control device, in particular forming part of the charging device (61), for controlling an electrical charging of the energy storage module (90) as a function of an operation of the suction motor (19).

11. Suction device according to one of the preceding claims, characterized in that the charging device (61) has monitoring means (75) for monitoring the charging current (I) and / or the state of charge of the energy storage module (90).

12. Suction device according to one of the preceding claims, characterized in thatthe charging device (61) forms an integral part of the suction device (10), wherein the electrical charging contacts (65) are arranged on the suction device housing (11).

13. Suction device according to one of claims 1 to 12, characterized in that the charging device (61) is designed as a charging module (60) which is separate from the vacuum cleaner housing (11) and has a charging housing (62), and a module receptacle for the charging module (60) is provided on the vacuum cleaner housing (11), to which module receptacle the charging module (60) can be detachably connected, wherein the module receptacle comprises electrical module contacts (36, 44) for electrically connecting the charging module (60) to electrical components of the vacuum cleaner (10) arranged in the vacuum cleaner housing (11).

14. Charging module (60) for a suction device (10) according to claim 13, characterized in thatit forms a charging device (61) for charging an electrical energy storage module (90) of a hand-held power tool (80), wherein the charging device (61) comprises electrical charging contacts (65) for providing a charging voltage (L) for the electrical energy storage module (90), and that it is designed as a charging module (60) which is separate from the suction device housing (11) of the suction device (10), has a charging housing (62) and is detachably connectable to a module receptacle provided on the suction device housing (11) for the charging module (60), wherein the charging module (60) comprises electrical module contacts (44) for electrical connection to electrical components of the suction device (10) arranged in the suction device housing (11), which are electrically connectable to module contacts (34) of the module receptacle.

15. Electrical energy storage module (90) for a hand-held power tool or as a component of a hand-held power tool, wherein the electrical energy storage module (90) is provided for charging on the suction device according to one of claims 1 to 13 or the charging module (60) according to claim 14 and forms a component of a system comprising the suction device or the charging module (60), wherein the energy storage module (90) expediently has an external communication device (50; 150; 250) for in particular wireless communication with a suction device communication device (40; 140) on board the suction device (10) or the charging module (60), wherein the external communication device (50; 150; 250) has an external receiver (55r, 155r, 255r) for receiving the control signal (108) and / or message signal (105) from the Suction device communication device (40;140) and / or an external transmitter (55s, 155s, 255s) for sending at least one control signal (51, 151, 251) and / or message signal (101, 201) to the suction device communication device (40; 140);