Electric battery pack, electrical processing and / or charger and system

Abstract

The invention relates to an electric battery pack (1) for detachable electrical connection with an electric processing and / or charger (2), wherein the battery pack (1) comprises: a first connection device (3) and a second connection device (4), which are designed for common electrical connection to the electric processing and / or charger (2) in a connection direction (5) of the battery pack (1), wherein an externally accessible plug section (6) of the first connection device (3) has a substantially U-shaped cross-section with respect to the connection direction (5).

Description

FIELD OF APPLICATION AND PRIOR ARTThe invention relates to an electric battery pack for releasable electrical connection to an electric machining and / or charging device. The invention also relates to such an electric machining and / or charging device. The invention also relates to a system having at least one such battery pack and having at least one such electric machining and / or charging device.WO 2023 / 099197 A1 discloses an accumulator with a spring-loaded connection device. In addition, a battery pack for a wireless device is known from DE 694 28 358 T2.OBJECT AND SOLUTIONIt is an object of the present invention to provide an electrical battery pack for the detachable electrical connection to an electric machining and / or charger, an electric machining and / or charger for the detachable electrical connection to such a battery pack, and a system having at least one such electric machining and / or charger and having at least one such electric battery pack, which have particular, in particular improved, properties, in particular in each case. In particular, a particularly robust battery pack is to be provided.This object is achieved by the subject matters of the independent claims. Preferred embodiments are the subject of the dependent claims. The wording of all the claims is made the content of the present description by explicit reference.An electric battery pack according to the invention is designed for releasable electrical connection to an electric machining and / or charging device. The electric battery pack is in particular designed to store electrical energy for an electrical drive device of the electric machining device which can be electrically connected to the electric battery pack, with the result that the drive device of the electric machining device can provide a drive power for driving a tool device which can be attached to the electric machining device on the basis of electrical energy from the battery pack. The electric machining device can be a motor chain saw, in particular wherein the tool device is then designed as a saw chain that can be driven in a revolving manner. Alternatively or additionally, the electric battery pack is configured in particular to store electrical energy which is supplied to the battery pack by means of the charger electrically connected to the electric battery pack.The battery pack according to the invention has a first connection device. In addition, the battery pack has a second connection device, in particular different from the first connection device. The first connection device and the second connection device are designed for common electrical connection to the electric machining and / or charging device in an, in particular common, connection direction of the battery pack. The first connection device and the second connection device can thus be configured such that when the electric battery pack is connected to the electric machining and / or charger in the connection direction, both the first connection device and the second connection device automatically and / or simultaneously form an electrical contact with the electric machining and / or charger.The first connection device of the electric battery pack according to the invention has a plug section which is accessible from the outside. In particular, the plug-in section is exposed, in particular towards an external environment of the battery pack. The plug portion may form a "male" connector of the battery pack. The plug portion of the first terminal device has a substantially U-shaped cross section with respect to the terminal direction. The cross section is oriented perpendicular to the connection direction. In particular, the substantially U-shaped cross section is defined by a cut surface contour which results in a cut of the plug section which is guided perpendicularly to the connection direction. In particular, "substantially U-shaped" means that a U-shape of the cross section can optionally have, in particular rounded or non-rounded, corners and / or does not have to be continuously curved. It is understood that such a continuous curvature does not have to be excluded, however.Expediently, a mechanically particularly robust first connection device can be achieved by the cross-sectional configuration of the plug section, which has an advantageous effect on the robustness of the entire electrical battery pack. In particular, the plug-in section, as a result of its cross-sectional configuration, has proven to be particularly robust with respect to mechanical manipulation and / or with respect to unintentional collisions, in particular with a substrate after the battery pack has been dropped.Expediently, the second connection device has neither a plug section with a substantially U-shaped cross section with respect to the connection device nor a plug opening with a substantially U-shaped cross section with respect to the connection device.The electric battery pack expediently has at least one battery cell, in particular a plurality of battery cells, which are electrically connected to the connection devices of the battery pack.The electrical battery pack can expediently be an electrical battery pack. The battery cells of the battery pack can be designed as electric battery cells.In one embodiment of the invention, the first connection device is matched to a first mating connection device of the electric machining and / or charging device. The first connection device is matched to the first mating connection device in such a way that the plug section of the first connection device can be inserted into a complementary plug opening of the first mating connection device in the connection direction. By inserting the plug section into the complementary plug opening of the first mating connection device, the first connection device and the first mating connection device can be electrically, in particular and mechanically, connected to one another. The second connection device is matched to a second mating connection device of the electric machining and / or charging device. The second connection device is matched to the second mating connection device in such a way that a plug opening of the second connection device can be plugged onto a complementary plug section of the second mating connection device in the connection direction. By plugging the plug opening of the second connection device onto the complementary plug section of the second mating connection device, the second connection device and the second mating connection device can be electrically, in particular and mechanically, connected to one another. The plug-in opening of the second connection device can form a "female" connection device of the battery pack.In a further embodiment of the invention, the electric battery pack has an electrical communication connection device. The electrical communication connection device of the battery pack is matched to a complementary communication mating connection device of the electric machining and / or charger in such a way that the electrical communication connection device and the communication mating connection device can be electrically connected to one another in a releasable manner in the connection direction, so that-in particular associated with the joint connection of the connection devices to the mating connection devices-a communication connection is provided between the battery pack and the electric machining and / or charger. In particular, in a single connecting process, the two connection devices can be connected to the two mating connection devices at once, wherein, in contrast, the communication connection device is connected mechanically, in particular and electrically, to the communication mating connection device in a leading or simultaneous or trailing manner.In a further embodiment of the invention, the communication connection device is arranged transversely, in particular perpendicularly, to the connection direction, in particular in alignment, between the first connection device and the second connection device. The two connection devices and the communication connection device can thus be arranged substantially on an imaginary line, which imaginary line extends transversely, in particular perpendicularly, to the connection direction.In a further embodiment of the invention, the substantially U-shaped cross section of the plug section has a base section. Opposite the base section, in particular perpendicular to the connection direction, the substantially U-shaped cross section is opened. The base section is in particular substantially planar. The substantially U-shaped cross section has two leg sections which project from the base section in each case substantially perpendicularly and / or in the same direction. The leg sections can, in particular, each be substantially planar. In particular, the substantially U-shaped cross section can substantially correspond to a three-sided, in particular and mirror-symmetrical, rectangular contour half.In a further embodiment of the invention, the leg portions project from the base portion in a direction towards an interior of the battery pack. At least one battery cell, in particular a plurality of battery cells, can be present in the interior of the battery pack. Alternatively or additionally, the base section points to an outer side of the battery pack, in particular wherein this outer side is extended parallel to the connection direction.In a further embodiment of the invention, the first connection device has a contact element. The contact element has the plug section of the first connection device. The contact element is formed in one part or in multiple parts. In particular, at least or only the leg sections of the contact element are configured to be electrically conductive, in particular metal. The leg sections of the contact element correspond in particular to the leg sections of the U-shaped cross section. In particular, the leg sections of the contact element are designed to be electrically contacted by the first mating connection device. The leg sections can thus be provided for a voltage tap. Alternatively or additionally, the first mating connection device is not designed to electrically contact the base section of the contact element or of the U-shaped cross section.In a further embodiment of the invention, the battery pack has an outer pack housing. The outer package housing may be made with or from a polymeric material. In particular, the outer pack housing surrounds the interior of the battery pack. The outer package housing has a recess which is open in the connection direction. In particular, the recess is also opened, more particularly only toward one side, perpendicularly to the connection direction. The recess can interrupt an edge of a substantially cuboidal outer geometry of the outer pack housing. The contact element of the first connection device having the plug section exits to the outside at a housing section of the outer pack housing, wherein this housing section defines the recess. In particular, the contact element of the first connection device having the plug section exits along the connection device to the outside at the housing section of the outer pack housing defining the recess.Expediently, an aperture can be provided on / in the plug section of the first connection device, wherein a cavity is present between the outer package housing and the plug section of the first connection device, wherein the cavity is formed open at the end in the connection direction, and wherein the aperture opens the cavity outwards perpendicular to the connection direction, in particular in order to counteract the formation of a dirt trap. In particular, the aperture is present on / in the base section.In a further embodiment of the invention, the outer pack housing of the battery pack has a projection, wherein this projection protrudes in the connection direction. In particular, the projection of the outer package housing also protrudes perpendicularly to the connection direction. In particular, the protrusion protrudes relative to the recess of the outer pack housing. The protrusion may have an edge portion of an outer edge of the substantially cuboidal outer shape of the battery pack. In particular, the protrusion and the recess may be provided on the same outer edge of the battery pack. The plug opening of the second connection device is present on the projection.Expediently, the projection and / or the recess provide a mechanical coding, as a result of which the battery pack can be electrically connected to the electric machining and / or charger only in one orientation of its connection devices relative to the mating connection devices of the electric machining and / or charger.An electric machining and / or charging device according to the invention is designed for releasable electrical connection to an electric battery pack according to the invention. In this respect, the above-mentioned advantages of the battery pack are also transferred at least in parts to the electric machining and / or charging device. The electric machining and / or charging device has a mating connection arrangement. The mating connection arrangement has a mating connection device, in particular the mating connection device, and a second mating connection device, in particular the second mating connection device. In this case, the first mating connection device and the second mating connection device are designed for common electrical connection to the battery pack opposite the connection device of the battery pack. The mating connection arrangement of the electric machining and / or charging device is designed and / or configured to be complementary and / or to be diametrically opposed to a connection arrangement of the battery pack. The connection arrangement of the battery pack has, in particular, the first connection device and the second connection device of the battery pack.It may be conceivable to realize the electric machining device exclusively as an electric machining device or simultaneously as a charger or the charger exclusively as a charger or simultaneously as an electric machining device, which in the present context may be expressed by the formulation "electric machining and / or charger".Expediently, the mating connection arrangement can have the communication mating connection device. Alternatively or additionally, the connection arrangement can have the communication connection device.In one embodiment of the invention, the first mating connection device has an outwardly open plug opening which is designed to receive the plug section of the first connection device of the battery pack. The plug opening of the first mating connection device has a substantially U-shaped cross section with respect to the connection direction. The substantially U-shaped cross section of the plug opening can be formed complementary to the substantially U-shaped cross section of the plug section of the first connection device.In a further embodiment of the invention, the electric machining and / or charging device has at least one, in particular exactly one, receiving device for interchangeably receiving the battery pack. The electric machining and / or charging device, in particular if it is at least designed as an electric machining device, has a drive device which can be supplied with electrical energy from the accommodated battery pack via the mating connection arrangement and the connection arrangement. Alternatively or additionally, in particular when the electric machining and / or charging device is designed at least as a charging device, the accommodated battery pack can be supplied with electrical energy via the mating connection arrangement and the connection arrangement, in particular in order to be charged.A system according to the invention has at least one electric machining and / or charging device according to the invention as described above. In addition, the system includes at least one battery pack according to the present invention as described above. The mating connection arrangement of each electrical processing and / or charging device of the system and the connection arrangement of each battery pack of the system are of standardized design and / or configuration. The battery packs and the electric machining and / or charging devices of the system can thus be combined with one another in an exchangeable manner.BRIEF DESCRIPTION OF THE DRAWINGSFurther advantages and features of the invention are evident from the claims and from the following description of preferred exemplary embodiments of the invention, which are illustrated on the basis of the drawings. The same reference numerals refer to the same or similar or functionally the same components.It is understood that the features mentioned above and those still to be explained below can be used not only in the respectively specified combination, but also in other combinations or alone, without departing from the scope of the present invention. FIG. 1 shows a schematic perspective illustration of a detail of an embodiment of an electrical battery pack according to the invention, FIG. 2 shows a schematic plan view, counter to a connection direction, of a detail of the battery pack according to FIG. 1, FIG. 3 shows a schematic perspective illustration of a detail of an embodiment of an electric machining and / or charging device according to the invention, FIG. 4 shows a schematic plan view in the connection direction of a detail of the electric machining and / or charging device according to FIG. 3, FIG. 5 shows a schematic perspective illustration of a detail of an embodiment of a system according to the invention with the battery pack according to FIGS. 1 and 2 and with the electric machining and / or charging device according to FIGS. 3 and 4 in a state in which it is not yet connected to one another or is no longer connected to one another, FIG. 6 shows a schematic sectional illustration of the system according to FIG. 5, wherein the battery pack and the electric machining and / or charging device are in a state connected to one another, FIG. 7 shows a schematic perspective illustration of a contact element of the battery pack according to FIGS. 1 and 2, FIG. 8 is a further schematic perspective view of the contact element according to FIG. 7, FIG. 9 schematically shows a structure of a further embodiment of the system according to the invention, FIG. 10 shows a schematic perspective illustration of a further embodiment of the charging device according to the invention, and FIG. 11 shows a schematic side view of a further embodiment of the electro-machining device according to the invention.DETAILED DESCRIPTION OF THE EMBODIMENTSAn electric battery pack 1 according to the invention is provided for the releasable electrical, in particular and mechanical, connection to an electric machining and / or charging device 2. The electric machining and / or charging device 2 can be configured only as a charging device, cf. for example FIG. 10 The electric machining and / or charging device 2 can be configured only as an electric machining device, cf. for example FIG. 11 However, it is also conceivable that the electric machining and / or charging device 2 is configured both as an electric machining device and as a charging device, in particular if the charging device is integrated in the electric machining device.The battery pack 1 has a first connection device 3 and a second connection device 4. The connection devices 3, 4 are designed for common electrical connection to the electric machining and / or charging device 2. The two connection devices 3, 4 of the battery pack 1 are designed to be connected to the electric machining and / or charging device 2, in particular simultaneously, in a common connection direction 5 of the battery pack 1. The first connection device 3 has a plug section 6 which is accessible from the outside. The plug portion 6 of the first terminal 3 may be exposed. The plug section 6 of the first connection device 3 has a substantially U-shaped cross section with respect to the connection direction 5.The second connection device 4 of the battery pack 1 in the present case has neither a plug section with a substantially U-shaped cross section with respect to the connection direction 5 nor a plug opening with a substantially U-shaped cross section with respect to the connection direction 5.The electric machining and / or charging device 2 has a mating connection arrangement 20. The first counter-connection device 7 and the second counter-connection device 9 are designed for common electrical connection to the battery pack 1 counter to the connection direction 5 of the battery pack 1. The connection devices 3, 4 and the counter connection devices 7, 9 can therefore be connectable to one another parallel to the connection direction 5 or along the connection direction 5. The mating connection arrangement 20 of the electric machining and / or charging device 2 is designed and / or configured to be complementary and-alternatively or additionally-to be diametrically opposed to a connection arrangement 21 of the battery pack 1.In the present case, the first connection device 3 is matched to the first mating connection device 7 of the electric machining and / or charging device 2 in such a way that the plug section 6 of the first connection device 3 can be inserted in the connection direction 5 into a complementary plug opening 8 of the first mating connection device 7 in order to electrically connect the first connection device 3 and the first mating connection device 7 to one another. In this case, the second connection device 4 is matched to the second mating connection device 9 of the electric machining and / or charger 2 in such a way that a plug opening 8 of the second connection device 4 can be plugged in the connection direction 5 onto a complementary plug section 6 of the second mating connection device 9 of the electric machining and / or charger 2, in order to electrically connect the second connection device 4 and the second mating connection device 9 to one another.The electric battery pack 1 has an electric communication terminal device 10 in the present case. The communication connection device 10 of the battery pack 1 is matched to a complementary communication mating connection device 11 of the electric machining and / or charger 2 in such a way that the electric communication connection device 10 and the communication mating connection device 11 can be detachably electrically connected to one another in the connection direction 5 in order to provide a communication connection between the battery pack 1 and the electric machining and / or charger 2. For example, the communication connection device 10 and the communication mating connection device 11 are matched to one another in such a way that the communication connection can be generated in the course of a connection process for connecting the connection devices 3, 4 to the mating connection device 7, 9. In particular, an electrical connection between the communication connection device 10 and the communication connection device 11 can be generated temporally after or simultaneously with or temporally before an electrical connection between the connection devices 3, 4 and the mating connection devices 7, 9. In particular, the chronological sequence of the generation of the electrical connections during the connection can be effected by a coordination of contact element lengths.Alternatively or additionally, it can be conceivable for the connection device 3, 4 and the mating connection devices 7, 9 to be matched to one another in such a way that, during the joint connection, a first electrical contact is formed between the first connection device 3 and the first mating connection device 7 temporally before or simultaneously as or temporally after a second electrical contact between the second connection device 4 and the second mating connection device 9.The communication connection device 10 is arranged, for example, transversely, in the present case perpendicularly, to the connection direction 5 between the first connection device 3 and the second connection device 4. For example, the communication connection device 10 can be arranged flush between the first connection device 3 and the second connection device 4.The substantially U-shaped cross section of the plug section 6 of the first connection device 3 has, for example, a base section 12 which in the present case is substantially planar. The U-shaped cross section is open opposite the base section 12. The substantially U-shaped cross section of the plug section 6 of the first connection device 3 also has two leg sections 13 which project from the base section 12 in each case substantially perpendicularly and / or-as in the present case-in the same direction. In this case, the leg sections 13 project from the base section 12 in the present case in a direction towards an interior 14 of the battery pack 1. Alternatively or additionally, the base section 12 can face an outer side 24 of the battery pack 1, as in the present case. In particular, a back of the base section 12 facing away from the leg sections 13 can extend parallel to the outer side 24, in particular parallel to the connection direction 5.In the present case, the first connection device 3 has a contact element 15 which has the plug section 6 of the first connection device 3. The contact element 15 can be formed as a single part, as in the present case, or as a multicomponent element, in embodiments not shown. At least or only the leg sections 13 of the contact element 15 can be designed to be electrically conductive, in particular metal. In the present case, an electrical connection of the first connection device 3 to the first mating connection device 7 on the side of the first connection device 3 takes place exclusively on the leg sections 13 of the contact element 15, in particular on both sides per leg section 13.The battery pack 1 has an outer pack housing 16. The outer package housing 16 has, for example, a recess 17 which is open in the connection direction 5. In addition, the recess 17-as in the present case-can be open perpendicularly to the connection direction 5. The contact element 15, which has the plug section 6 of the first connection device 3, passes outwards on a housing section 18 of the outer pack housing 16, wherein this housing section 18 delimits the recess 17, in particular only partially. The plug portion 6 may be present within the recess 17. In particular, the contact element 15 extends outwards along the connection direction 5 at the housing section 18 and protrudes into the recess 17.In the plug-in section 6, an opening, not shown in the present case, can be provided, which additionally opens a cavity, which is open outwards along the connection direction 5 and is defined jointly by means of the outer pack housing 16 and the plug-in section 6, outwards perpendicularly to the connection direction 5.The outer pack housing 16 of the battery pack 1 in the present case has a protrusion 19 protruding in the connection direction 5. For example, the protrusion 19 also protrudes perpendicularly to the connection direction 5. The plug-in opening 8 of the second connection device 4 is arranged on the projection 19 in the present case.The first mating connection device 7 of the electric machining and / or charging device 2 has in the present case an outwardly open plug opening 8, which is designed to receive the plug section 6 of the first connection device 3 of the battery pack 1. The plug opening 8 of the first mating connection device 7 has a substantially U-shaped cross section with respect to the connection direction 5.As already mentioned, the electric machining and / or charging device 2 according to FIG. 10 is configured exclusively as a charging device. The charger has at least one receiving device 22, in the present case exactly one receiving device 22. The receiving device 22 is designed for interchangeably receiving the battery pack 1. Via the counter connection arrangement 20 and the connection arrangement 21, the accommodated battery pack 1 can be supplied with electrical energy in order to be charged by means of the charger.As likewise already mentioned, the electric machining and / or charging device 2 according to FIG. 11 is configured exclusively as an electric machining device. The electric machining device has at least one, in the present case exactly one, receiving device 22 for interchangeably receiving the battery pack 1.At least one electric machining and / or charging device 2 and at least one battery pack 1 form a system 23. In this case, the mating connection arrangement 20 of each electric machining and / or charging device 2 of the system 23 and the connection arrangement 21 of each battery pack 1 of the system 23 are of standardized design and / or configuration. In this way, the battery packs 1 of the system 23 and the electric machining and / or charging devices 2 of the system 23 can be combined with one another interchangeably.

Claims

An electric battery pack (1) for releasable electrical connection to an electric machining and / or charger (2), wherein the battery pack (1) comprises: - a first connection device (3) and a second connection device (4) which are configured for common electrical connection to the electric machining and / or charger (2) in a connection direction (5) of the battery pack (1), - wherein a plug section (6) of the first connection device (3) which is accessible from the outside has a substantially U-shaped cross section with respect to the connection direction (5), wherein the cross section is oriented perpendicular to the connection direction (5).Electrical battery pack (1) according to the preceding claim, - wherein the first connection device (3) is matched to a first mating connection device (7) of the electric machining and / or charger (2) in such a way that the plug-in section (6) of the first connection device (3) can be inserted in the connection direction (5) into a complementary plug-in opening (8) of the first mating connection device (7) in order to electrically connect the first connection device (3) and the first mating connection device (7) to one another, - wherein the second connection device (4) is matched to a second mating connection device (9) of the electric machining and / or charger (2) in such a way that a plug-in opening (8) of the second connection device (4) can be plugged in the connection direction (5) onto a complementary plug-in section (6) of the second mating connection device (9) of the electric machining and / or charger (2), to electrically connect the second connection device (4) and the second mating connection device (9).The electric battery pack (1) according to any one of the preceding claims, - wherein the electric battery pack (1) has an electric communication connection device (10) which is matched to a complementary communication mating connection device (11) of the electric machining and / or charger (2) in such a way that the electric communication connection device (10) and the communication mating connection device (11) can be detachably electrically connected to one another in the connection direction (5) in order to provide a communication connection between the battery pack (1) and the electric machining and / or charger (2), in particular in the course of the joint connection of the connection devices (3, 4) to the mating connection devices (7, 9).Electric battery pack (1) according to the preceding claim, - wherein the communication connection device (10) is arranged transversely to the connection direction (5), in particular in alignment, between the first connection device (3) and the second connection device (4).The electric battery pack (1) according to any one of the preceding claims, - wherein the substantially U-shaped cross section comprises a, in particular substantially planar, base section (12), opposite which the substantially U-shaped cross section is open, - wherein the substantially U-shaped cross section comprises two leg sections (13), which project from the base section (12) in each case substantially perpendicularly and / or in the same direction.The electric battery pack (1) according to the preceding claim, - wherein the leg portions (13) project from the base portion (12) directed towards an interior (14) of the battery pack (1) and / or wherein the base portion (12) points towards an outer side (24) of the battery pack (1).Electrical battery pack (1) according to one of the preceding claims, - wherein a contact element (15) of the first connection device (3) having the plug-in section (6) is formed in one part or in multiple parts, in particular wherein at least or only leg sections (13) of the contact element (15) are formed in an electrically conductive, in particular metallic, manner.Electric battery pack (1) according to one of the preceding claims, - wherein the battery pack (1) has an outer pack housing (16), - wherein the outer pack housing (16) has a recess (17) which is open in the connection direction (5), in particular and additionally perpendicular to the connection direction (5), - wherein a contact element (15), having the plug section (6), of the first connection device (3) comes outwards on a housing section (18), defining the recess (17), of the outer pack housing (16), in particular along the connection direction (5).Electric battery pack (1) according to one of the preceding claims, - wherein an outer pack housing (16) of the battery pack (1) has a protrusion (19) protruding in the connection direction (5), in particular and additionally perpendicular to the connection direction (5), - wherein a plug opening (8) of the second connection device (4) is present on the protrusion (19).Electric machining and / or charging device (2) for releasable electrical connection to a battery pack (1) according to one of the preceding claims, wherein the electric machining and / or charging device (2) comprises: - a counter-connection arrangement (20), which comprises a first counter-connection device (7) and a second counter-connection device (9), which are designed for common electrical connection to the battery pack (1) counter to the connection direction (5) of the battery pack (1), - wherein the counter-connection arrangement (20) of the electric machining and / or charging device (2) is designed and / or configured complementary and / or counter-identical to a connection arrangement (21) of the battery pack (1).Electric machining and / or charging device (2) according to the preceding claim, - wherein the first mating connection device (7) has an outwardly open plug opening (8) for receiving the plug section (6) of the first connection device (3) of the battery pack (1), - wherein the plug opening (8) of the first mating connection device (7) has a substantially U-shaped cross section with respect to the connection direction (5).Electric machining and / or charging device (2) according to the preceding claim, - wherein the electric machining and / or charging device (2) has at least one receiving device (22) for interchangeably receiving the battery pack (1), - wherein the electric machining and / or charging device has an electric drive device which can be supplied with electrical energy from the received battery pack (1) via the mating connection arrangement (20) and the connection arrangement (21), and / or the received battery pack (1) can be supplied with electrical energy via both the mating connection arrangement (20) and the connection arrangement (21).System (23), which comprises: - at least electric machining and / or charging device (2) according to one of Claims 10 to 12, and - at least one battery pack (1) according to one of Claims 1 to 9, - wherein the mating connection arrangement (20) of each electric machining and / or charging device (2) of the system (23) and the connection arrangement (21) of each battery pack (1) of the system (23) are of standardized design and / or configuration.

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